Merge branch 'real-hardware' into fb-driver

Since it's often needed when debugging between the bootloader and
kernel, log the address of the table pages the bootloader allocated.

.git-commit-template

@@ -0,0 +1,11 @@
+[section] Imperative-voiced title in less than 50
+
+# Body describes what was done, and why. New obviously-needed features
+# don't necessarily require a why.
+
+# Links to relevant bugs or web pages
+See: Github bug #242
+See: [frobozz blog post](https://jsix.dev/posts/frobozz/)
+
+# Tags and keywords useful for searching
+Tags:

.gitignore

@@ -2,8 +2,9 @@
 /build*
 *.bak
 tags
-.gdbinit
-popcorn.log
+jsix.log
 *.o
 *.a
 sysroot
+.gdb_history
+.peru

LICENSE.md

@@ -1,123 +1,354 @@
-# Popcorn
+# License
 
-Popcorn itself is released under the terms of the MIT license:
+jsix is (c) 2017-2019 Justin C Miller, and distributed under the terms of the
+Mozilla Public License 2.0.
 
-> Copyright © 2018 Justin C. Miller, https://devjustinian.com
-> <justin@devjustinian.com>
-> 
-> Permission is hereby granted, free of charge, to any person obtaining a copy
-> of this software and associated documentation files (the “Software”), to deal
-> in the Software without restriction, including without limitation the rights
-> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-> copies of the Software, and to permit persons to whom the Software is
-> furnished to do so, subject to the following conditions:
-> 
-> The above copyright notice and this permission notice shall be included in
-> all copies or substantial portions of the Software.
-> 
-> THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-> SOFTWARE.
+---
 
-# Included works
+## Mozilla Public License Version 2.0
 
-Popcorn includes and/or is derived from a number of other works, listed here.
+### 1. Definitions
 
-## Catch2
+#### 1.1. "Contributor"
 
-Popcorn uses [Catch2](https://github.com/catchorg/Catch2) for testing. Catch2 is
-released under the terms of the Boost Software license:
+means each individual or legal entity that creates, contributes to the creation
+of, or owns Covered Software.
 
-> Boost Software License - Version 1.0 - August 17th, 2003
-> 
-> Permission is hereby granted, free of charge, to any person or organization
-> obtaining a copy of the software and accompanying documentation covered by
-> this license (the "Software") to use, reproduce, display, distribute,
-> execute, and transmit the Software, and to prepare derivative works of the
-> Software, and to permit third-parties to whom the Software is furnished to
-> do so, all subject to the following:
-> 
-> The copyright notices in the Software and this entire statement, including
-> the above license grant, this restriction and the following disclaimer,
-> must be included in all copies of the Software, in whole or in part, and
-> all derivative works of the Software, unless such copies or derivative
-> works are solely in the form of machine-executable object code generated by
-> a source language processor.
-> 
-> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-> FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-> SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-> FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-> ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-> DEALINGS IN THE SOFTWARE.
+#### 1.2. "Contributor Version"
 
-## cpptoml
+means the combination of the Contributions of others (if any) used by a
+Contributor and that particular Contributor's Contribution.
 
-Popcorn uses the [cpptoml](https://github.com/skystrife/cpptoml) library for
-parsing TOML configuration files. cpptoml is released under the terms of the
-MIT license:
+#### 1.3. "Contribution
 
-> Copyright (c) 2014 Chase Geigle
->
-> Permission is hereby granted, free of charge, to any person obtaining a copy of
-> this software and associated documentation files (the "Software"), to deal in
-> the Software without restriction, including without limitation the rights to
-> use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-> the Software, and to permit persons to whom the Software is furnished to do so,
-> subject to the following conditions:
-> 
-> The above copyright notice and this permission notice shall be included in all
-> copies or substantial portions of the Software.
-> 
-> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-> FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-> COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-> IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-> CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+means Covered Software of a particular Contributor.
 
-## GNU-EFI
+#### 1.4. "Covered Software"
 
-Popcorn's UEFI bootloader initially used
-[GNU-EFI](https://gnu-efi.sourceforge.net), and still uses one file (the linker
-script for the bootloader) from that project. GNU-EFI claims to be released
-under the BSD license. Again, I could not find its specific license file, so I
-am reproducing a generic 3-clause BSD license (the most restrictive, so as not
-to assume any extra rights that may not actually be granted) for it here:
+means Source Code Form to which the initial Contributor has attached the notice
+in Exhibit A, the Executable Form of such Source Code Form, and Modifications
+of such Source Code Form, in each case including portions thereof.
 
-> Copyright © Nigel Croxon
-> 
-> Redistribution and use in source and binary forms, with or without
-> modification, are permitted provided that the following conditions are met:
-> 
-> 1. Redistributions of source code must retain the above copyright notice, this
->    list of conditions and the following disclaimer.
-> 
-> 2. Redistributions in binary form must reproduce the above copyright notice,
->    this list of conditions and the following disclaimer in the documentation
->    and/or other materials provided with the distribution.
-> 
-> 3. Neither the name of the copyright holder nor the names of its contributors
->    may be used to endorse or promote products derived from this software
->    without specific prior written permission.
-> 
-> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-> ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-> WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-> DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-> FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-> DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-> SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-> OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-> OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#### 1.5. "Incompatible With Secondary Licenses"
 
-## Intel EFI Application Toolkit
+means
+
+* **(a)** that the initial Contributor has attached the notice described in
+  Exhibit B to the Covered Software; or
+* **(b)** that the Covered Software was made available under the terms of
+  version 1.1 or earlier of the License, but not also under the terms of a
+  Secondary License.
+
+#### 1.6. "Executable Form"
+
+means any form of the work other than Source Code Form.
+
+#### 1.7. "Larger Work"
+
+means a work that combines Covered Software with other material, in a separate
+file or files, that is not Covered Software.
+
+#### 1.8. "License"
+
+means this document.
+
+#### 1.9. "Licensable"
+
+means having the right to grant, to the maximum extent possible, whether at the
+time of the initial grant or subsequently, any and all of the rights conveyed
+by this License.
+
+#### 1.10. "Modifications"
+
+means any of the following:
+
+* **(a)** any file in Source Code Form that results from an addition to,
+  deletion from, or modification of the contents of Covered Software; or
+* **(b)** any new file in Source Code Form that contains any Covered Software.
+
+#### 1.11. "Patent Claims" of a Contributor
+
+means any patent claim(s), including without limitation, method, process, and
+apparatus claims, in any patent Licensable by such Contributor that would be
+infringed, but for the grant of the License, by the making, using, selling,
+offering for sale, having made, import, or transfer of either its Contributions
+or its Contributor Version.
+
+#### 1.12. "Secondary License"
+
+means either the GNU General Public License, Version 2.0, the GNU Lesser
+General Public License, Version 2.1, the GNU Affero General Public License,
+Version 3.0, or any later versions of those licenses.
+
+#### 1.13. "Source Code Form"
+
+means the form of the work preferred for making modifications.
+
+#### 1.14. "You" (or "Your")
+
+means an individual or a legal entity exercising rights under this License. For
+legal entities, "You" includes any entity that controls, is controlled by, or
+is under common control with You. For purposes of this definition, "control"
+means **(a)** the power, direct or indirect, to cause the direction or
+management of such entity, whether by contract or otherwise, or **(b)**
+ownership of more than fifty percent (50%) of the outstanding shares or
+beneficial ownership of such entity.
+
+
+### 2. License Grants and Conditions
+
+#### 2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free, non-exclusive
+license:
+
+* **(a)** under intellectual property rights (other than patent or trademark)
+  Licensable by such Contributor to use, reproduce, make available, modify,
+  display, perform, distribute, and otherwise exploit its Contributions, either
+  on an unmodified basis, with Modifications, or as part of a Larger Work; and
+* **(b)** under Patent Claims of such Contributor to make, use, sell, offer for
+  sale, have made, import, and otherwise transfer either its Contributions or
+  its Contributor Version.
+
+#### 2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution become
+effective for each Contribution on the date the Contributor first distributes
+such Contribution.
+
+#### 2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under this
+License. No additional rights or licenses will be implied from the distribution
+or licensing of Covered Software under this License.  Notwithstanding Section
+2.1(b) above, no patent license is granted by a Contributor:
+
+* **(a)** for any code that a Contributor has removed from Covered Software; or
+* **(b)** for infringements caused by: **(i)** Your and any other third party's
+  modifications of Covered Software, or **(ii)** the combination of its
+  Contributions with other software (except as part of its Contributor
+  Version); or
+* **(c)** under Patent Claims infringed by Covered Software in the absence of
+  its Contributions.
+
+This License does not grant any rights in the trademarks, service marks, or
+logos of any Contributor (except as may be necessary to comply with the notice
+requirements in Section 3.4).
+
+#### 2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to distribute
+the Covered Software under a subsequent version of this License (see Section
+10.2) or under the terms of a Secondary License (if permitted under the terms
+of Section 3.3).
+
+#### 2.5. Representation
+
+Each Contributor represents that the Contributor believes its Contributions are
+its original creation(s) or it has sufficient rights to grant the rights to its
+Contributions conveyed by this License.
+
+#### 2.6. Fair Use
+
+This License is not intended to limit any rights You have under applicable
+copyright doctrines of fair use, fair dealing, or other equivalents.
+
+#### 2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
+Section 2.1.
+
+
+### 3. Responsibilities
+
+#### 3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under the
+terms of this License. You must inform recipients that the Source Code Form of
+the Covered Software is governed by the terms of this License, and how they can
+obtain a copy of this License. You may not attempt to alter or restrict the
+recipients' rights in the Source Code Form.
+
+#### 3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+* **(a)** such Covered Software must also be made available in Source Code
+  Form, as described in Section 3.1, and You must inform recipients of the
+  Executable Form how they can obtain a copy of such Source Code Form by
+  reasonable means in a timely manner, at a charge no more than the cost of
+  distribution to the recipient; and
+* **(b)** You may distribute such Executable Form under the terms of this
+  License, or sublicense it under different terms, provided that the license
+  for the Executable Form does not attempt to limit or alter the recipients'
+  rights in the Source Code Form under this License.
+
+#### 3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for the
+Covered Software. If the Larger Work is a combination of Covered Software with
+a work governed by one or more Secondary Licenses, and the Covered Software is
+not Incompatible With Secondary Licenses, this License permits You to
+additionally distribute such Covered Software under the terms of such Secondary
+License(s), so that the recipient of the Larger Work may, at their option,
+further distribute the Covered Software under the terms of either this License
+or such Secondary License(s).
+
+#### 3.4. Notices
+
+You may not remove or alter the substance of any license notices (including
+copyright notices, patent notices, disclaimers of warranty, or limitations of
+liability) contained within the Source Code Form of the Covered Software,
+except that You may alter any license notices to the extent required to remedy
+known factual inaccuracies.
+
+#### 3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support, indemnity
+or liability obligations to one or more recipients of Covered Software.
+However, You may do so only on Your own behalf, and not on behalf of any
+Contributor. You must make it absolutely clear that any such warranty, support,
+indemnity, or liability obligation is offered by You alone, and You hereby
+agree to indemnify every Contributor for any liability incurred by such
+Contributor as a result of warranty, support, indemnity or liability terms You
+offer. You may include additional disclaimers of warranty and limitations of
+liability specific to any jurisdiction.
+
+
+### 4. Inability to Comply Due to Statute or Regulation
+
+If it is impossible for You to comply with any of the terms of this License
+with respect to some or all of the Covered Software due to statute, judicial
+order, or regulation then You must: **(a)** comply with the terms of this
+License to the maximum extent possible; and **(b)** describe the limitations
+and the code they affect. Such description must be placed in a text file
+included with all distributions of the Covered Software under this License.
+Except to the extent prohibited by statute or regulation, such description must
+be sufficiently detailed for a recipient of ordinary skill to be able to
+understand it.
+
+
+### 5. Termination
+
+**5.1.** The rights granted under this License will terminate automatically if
+You fail to comply with any of its terms. However, if You become compliant,
+then the rights granted under this License from a particular Contributor are
+reinstated **(a)** provisionally, unless and until such Contributor explicitly
+and finally terminates Your grants, and **(b)** on an ongoing basis, if such
+Contributor fails to notify You of the non-compliance by some reasonable means
+prior to 60 days after You have come back into compliance. Moreover, Your
+grants from a particular Contributor are reinstated on an ongoing basis if such
+Contributor notifies You of the non-compliance by some reasonable means, this
+is the first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after Your
+receipt of the notice.
+
+**5.2.** If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions, counter-claims, and
+cross-claims) alleging that a Contributor Version directly or indirectly
+infringes any patent, then the rights granted to You by any and all
+Contributors for the Covered Software under Section 2.1 of this License shall
+terminate.
+
+**5.3.** In the event of termination under Sections 5.1 or 5.2 above, all end
+user license agreements (excluding distributors and resellers) which have been
+validly granted by You or Your distributors under this License prior to
+termination shall survive termination.
+
+
+### 6. Disclaimer of Warranty
+
+> Covered Software is provided under this License on an "as is" basis, without
+> warranty of any kind, either expressed, implied, or statutory, including,
+> without limitation, warranties that the Covered Software is free of defects,
+> merchantable, fit for a particular purpose or non-infringing. The entire risk
+> as to the quality and performance of the Covered Software is with You.
+> Should any Covered Software prove defective in any respect, You (not any
+> Contributor) assume the cost of any necessary servicing, repair, or
+> correction. This disclaimer of warranty constitutes an essential part of this
+> License. No use of any Covered Software is authorized under this License
+> except under this disclaimer.
+
+### 7. Limitation of Liability
+
+> Under no circumstances and under no legal theory, whether tort (including
+> negligence), contract, or otherwise, shall any Contributor, or anyone who
+> distributes Covered Software as permitted above, be liable to You for any
+> direct, indirect, special, incidental, or consequential damages of any
+> character including, without limitation, damages for lost profits, loss of
+> goodwill, work stoppage, computer failure or malfunction, or any and all
+> other commercial damages or losses, even if such party shall have been
+> informed of the possibility of such damages. This limitation of liability
+> shall not apply to liability for death or personal injury resulting from such
+> party's negligence to the extent applicable law prohibits such limitation.
+> Some jurisdictions do not allow the exclusion or limitation of incidental or
+> consequential damages, so this exclusion and limitation may not apply to You.
+
+
+### 8. Litigation
+
+Any litigation relating to this License may be brought only in the courts of a
+jurisdiction where the defendant maintains its principal place of business and
+such litigation shall be governed by laws of that jurisdiction, without
+reference to its conflict-of-law provisions.  Nothing in this Section shall
+prevent a party's ability to bring cross-claims or counter-claims.
+
+
+### 9. Miscellaneous
+
+This License represents the complete agreement concerning the subject matter
+hereof. If any provision of this License is held to be unenforceable, such
+provision shall be reformed only to the extent necessary to make it
+enforceable. Any law or regulation which provides that the language of a
+contract shall be construed against the drafter shall not be used to construe
+this License against a Contributor.
+
+
+### 10. Versions of the License
+
+#### 10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section 10.3,
+no one other than the license steward has the right to modify or publish new
+versions of this License. Each version will be given a distinguishing version
+number.
+
+#### 10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version of the
+License under which You originally received the Covered Software, or under the
+terms of any subsequent version published by the license steward.
+
+#### 10.3. Modified Versions
+
+If you create software not governed by this License, and you want to create a
+new license for such software, you may create and use a modified version of
+this License if you rename the license and remove any references to the name of
+the license steward (except to note that such modified license differs from
+this License).
+
+#### 10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the notice
+described in Exhibit B of this License must be attached.
+
+### Exhibit A - Source Code Form License Notice
+
+	This Source Code Form is subject to the terms of the Mozilla Public
+	License, v. 2.0. If a copy of the MPL was not distributed with this file,
+	You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular file, then
+You may include the notice in a location (such as a LICENSE file in a relevant
+directory) where a recipient would be likely to look for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+### Exhibit B - "Incompatible With Secondary Licenses" Notice
+
+	This Source Code Form is "Incompatible With Secondary Licenses", as defined
+	by the Mozilla Public License, v. 2.0.
 
-Popcorn's UEFI loader uses code from Intel's EFI Application toolkit. Relevant
-code includes license statements at the top of each file.

NOTES.md

@@ -2,7 +2,9 @@
 
 ## TODO
 
-- Better page-allocation model
+- Paging manager
+  - Copy-on-write pages
+  - Better page-allocation model?
 - Allow for more than one IOAPIC in ACPI module
   - The objects get created, but GSI lookup only uses the one at index 0
 - mark kernel memory pages global
@@ -19,12 +21,18 @@
   - Parse initrd and pre-load certain ELF images, eg the process loader process?
   - Do initial memory bootstrap?
 - Calling global ctors
-
-
 - Device Tree
   - Actual serial driver
   - Disk driver
     - File system
 - Multiprocessing
-  - Syscalls
+  - Fast syscalls using syscall/sysret
+
+### Build
+
+- Clean up build generator and its templates
+  - More robust objects to represent modules & targets to pass to templates
+  - Read project setup from a simple JSON/TOML/etc
+  - Better compartmentalizing when doing template inheritance
+- Move to LLD as sysroot linker
 

README.md

@@ -1,6 +1,6 @@
-# popcorn: A toy OS kernel
+# jsix: A toy OS kernel
 
-**popcorn** is the kernel for the hobby OS that I am currently building. It's
+**jsix** is the kernel for the hobby OS that I am currently building. It's
 far from finished, or even being usable. Instead, it's a sandbox for me to play
 with kernel-level code and explore architectures.
 
@@ -25,36 +25,54 @@ The design goals of the project are:
   temporarily) in some places to allow me to play around with the related
   hardware.
 
+A note on the name: This kernel was originally named Popcorn, but I have since
+discovered that the Popcorn Linux project is also developing a kernel with that
+name, started around the same time as this project. So I've renamed this kernel
+jsix (Always styled _jsix_ or `j6`, never capitalized) as an homage to L4, xv6,
+and my wonderful wife.
+
 ## Building
 
-Popcorn uses the `ninja` build tool, and generates the build files for it with
-the `generate_build.py` script.  The other requirements are:
+jsix uses the [Ninja][] build tool, and generates the build files for it with a
+custom tool called [Bonnibel][]. Bonnibel can be installed with [Cargo][], or
+downloaded as a prebuilt binary from its Github repository.
 
-* python 3 for generating the build config
-  * The Jinja2 package is also required
-* clang
-* mtools
+[Ninja]:    https://ninja-build.org
+[Bonnibel]: https://github.com/justinian/bonnibel
+[Cargo]:    https://crates.io/crates/bonnibel
+
+Requrirements:
+
+* bonnibel
 * ninja
+* clang
+* nasm
+* mtools
 * curl for downloading the toolchain
 
 ### Setting up the cross toolchain
 
-If you have `clang` and `curl` installed, runing the `scripts/build_sysroot_clang.sh`
-script will download and build a nasm/binutils/LLVM toolchain configured for building
-Popcorn host binaries.
+Running `pb sync` will download and unpack the toolchain into `sysroot`. 
 
-### Building and running Popcorn
+#### Compiling the toolchain yourself
 
-Once the toolchain has been set up, running `generate_build.py` will set up the
-build configuration, and `ninja -C build` will actually run the build.  If you
-have `qemu-system-x86_64` installed, the `qemu.sh` script will to run Popcorn
+If you have `clang` and `curl` installed, runing the `scripts/build_sysroot.sh`
+script will download and build a LLVM toolchain configured for building jsix
+host binaries.
+
+### Building and running jsix
+
+Once the toolchain has been set up, running Bonnibel's `pb init` command will
+set up the build configuration, and `pb build` will actually run the build.  If
+you have `qemu-system-x86_64` installed, the `qemu.sh` script will to run jsix
 in QEMU `-nographic` mode.
 
 I personally run this either from a real debian amd64 testing/buster machine or
 a windows WSL debian testing/buster installation. The following should be
 enough to set up such a system to build the kernel:
 
-    sudo apt install qemu-system-x86 nasm clang-6.0 mtools
-	sudo update-alternatives /usr/bin/clang clang /usr/bin/clang-6.0 1000
-	sudo update-alternatives /usr/bin/clang++ clang++ /usr/bin/clang++-6.0 1000
+    sudo apt install qemu-system-x86 nasm clang-6.0 mtools curl
+    sudo update-alternatives /usr/bin/clang clang /usr/bin/clang-6.0 1000
+    sudo update-alternatives /usr/bin/clang++ clang++ /usr/bin/clang++-6.0 1000
+	curl -L -o pb https://github.com/justinian/bonnibel/releases/download/2.0.0/pb_linux_amd64 && chmod a+x pb
 

assets/debugging/jsix.elf-gdb.py

@@ -0,0 +1,63 @@
+import gdb
+
+class PrintStackCommand(gdb.Command):
+    def __init__(self):
+        super().__init__("j6stack", gdb.COMMAND_DATA)
+
+    def invoke(self, arg, from_tty):
+        args = gdb.string_to_argv(arg)
+
+        base = "$rsp"
+        if len(args) > 0:
+            base = args[0]
+
+        depth = 22
+        if len(args) > 1:
+            depth = int(args[1])
+
+        for i in range(depth-1, -1, -1):
+            try:
+                offset = i * 8
+                base_addr = gdb.parse_and_eval(base)
+                value = gdb.parse_and_eval(f"*(uint64_t*)({base} + {offset})")
+                print("{:016x} (+{:04x}): {:016x}".format(int(base_addr) + offset, offset, int(value)))
+            except Exception as e:
+                print(e)
+                continue
+
+
+class PrintBacktraceCommand(gdb.Command):
+    def __init__(self):
+        super().__init__("j6bt", gdb.COMMAND_DATA)
+
+    def invoke(self, arg, from_tty):
+        args = gdb.string_to_argv(arg)
+
+        depth = 30
+        if len(args) > 0:
+            depth = int(args[0])
+
+        frame = "$rbp"
+        if len(args) > 1:
+            frame = args[1]
+
+        for i in range(depth-1, -1, -1):
+            ret = gdb.parse_and_eval(f"*(uint64_t*)({frame} + 8)")
+            frame = gdb.parse_and_eval(f"*(uint64_t*)({frame})")
+
+            name = ""
+            block = gdb.block_for_pc(int(ret))
+            if block:
+                name = block.function or ""
+
+            print("{:016x} {}".format(int(ret), name))
+
+            if frame == 0 or ret == 0:
+                return
+
+
+PrintStackCommand()
+PrintBacktraceCommand()
+
+gdb.execute("target remote :1234")
+gdb.execute("display/i $rip")

assets/initrd.toml

@@ -12,12 +12,17 @@
 dest = "screenfont.psf"
 source = "../assets/fonts/tamsyn8x16r.psf"
 
+[[files]]
+dest = "symbol_table.dat"
+source = "symbol_table.dat"
+symbols = true
+
 [[files]]
 dest = "nulldrv1"
-source = "host/nulldrv"
+source = "user/nulldrv"
 executable = true
 
 [[files]]
 dest = "nulldrv2"
-source = "host/nulldrv"
+source = "user/nulldrv"
 executable = true

external/uefi/boot_services.h

@@ -0,0 +1,101 @@
+#pragma once
+#ifndef _uefi_boot_services_h_
+#define _uefi_boot_services_h_
+
+// This Source Code Form is part of the j6-uefi-headers project and is subject
+// to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was
+// not distributed with this file, You can obtain one at
+// http://mozilla.org/MPL/2.0/.
+
+#include <stdint.h>
+#include <uefi/tables.h>
+#include <uefi/types.h>
+
+namespace uefi {
+namespace bs_impl {
+	using allocate_pages = status (*)(allocate_type, memory_type, size_t, void**);
+	using get_memory_map = status (*)(size_t*, memory_descriptor*, size_t*, size_t*, uint32_t*);
+	using allocate_pool = status (*)(memory_type, uint64_t, void**);
+	using handle_protocol = status (*)(handle, const guid*, void**);
+	using create_event = status (*)(evt, tpl, event_notify, void*, event*);
+	using exit_boot_services = status (*)(handle, size_t);
+	using locate_protocol = status (*)(const guid*, void*, void**);
+	using copy_mem = void (*)(void*, void*, size_t);
+	using set_mem = void (*)(void*, uint64_t, uint8_t);
+}
+
+struct boot_services {
+	static constexpr uint64_t signature = 0x56524553544f4f42ull;
+
+	table_header header;
+
+	// Task Priority Level management
+	void *raise_tpl;
+	void *restore_tpl;
+
+	// Memory Services
+	bs_impl::allocate_pages allocate_pages;
+	void *free_pages;
+	bs_impl::get_memory_map get_memory_map;
+	bs_impl::allocate_pool allocate_pool;
+	void *free_pool;
+
+	// Event & Timer Services
+	bs_impl::create_event create_event;
+	void *set_timer;
+	void *wait_for_event;
+	void *signal_event;
+	void *close_event;
+	void *check_event;
+
+	// Protocol Handler Services
+	void *install_protocol_interface;
+	void *reinstall_protocol_interface;
+	void *uninstall_protocol_interface;
+	bs_impl::handle_protocol handle_protocol;
+	void *_reserved;
+	void *register_protocol_notify;
+	void *locate_handle;
+	void *locate_device_path;
+	void *install_configuration_table;
+
+	// Image Services
+	void *load_image;
+	void *start_image;
+	void *exit;
+	void *unload_image;
+	bs_impl::exit_boot_services exit_boot_services;
+
+	// Miscellaneous Services
+	void *get_next_monotonic_count;
+	void *stall;
+	void *set_watchdog_timer;
+
+	// DriverSupport Services
+	void *connect_controller;
+	void *disconnect_controller;
+
+	// Open and Close Protocol Services
+	void *open_protocol;
+	void *close_protocol;
+	void *open_protocol_information;
+
+	// Library Services
+	void *protocols_per_handle;
+	void *locate_handle_buffer;
+	bs_impl::locate_protocol locate_protocol;
+	void *install_multiple_protocol_interfaces;
+	void *uninstall_multiple_protocol_interfaces;
+
+	// 32-bit CRC Services
+	void *calculate_crc32;
+
+	// Miscellaneous Services
+	bs_impl::copy_mem copy_mem;
+	bs_impl::set_mem set_mem;
+	void *create_event_ex;
+};
+
+} // namespace uefi
+
+#endif

external/uefi/errors.inc

@@ -0,0 +1,39 @@
+STATUS_WARNING( warn_unknown_glyph,   1)
+STATUS_WARNING( warn_delete_failure,  2)
+STATUS_WARNING( warn_write_failure,   3)
+STATUS_WARNING( warn_buffer_too_small,4)
+STATUS_WARNING( warn_stale_data,      5)
+STATUS_WARNING( warn_file_system,     6)
+
+STATUS_ERROR( load_error,             1)
+STATUS_ERROR( invalid_parameter,      2)
+STATUS_ERROR( unsupported,            3)
+STATUS_ERROR( bad_buffer_size,        4)
+STATUS_ERROR( buffer_too_small,       5)
+STATUS_ERROR( not_ready,              6)
+STATUS_ERROR( device_error,           7)
+STATUS_ERROR( write_protected,        8)
+STATUS_ERROR( out_of_resources,       9)
+STATUS_ERROR( volume_corrupted,       10)
+STATUS_ERROR( volume_full,            11)
+STATUS_ERROR( no_media,               12)
+STATUS_ERROR( media_changed,          13)
+STATUS_ERROR( not_found,              14)
+STATUS_ERROR( access_denied,          15)
+STATUS_ERROR( no_response,            16)
+STATUS_ERROR( no_mapping,             17)
+STATUS_ERROR( timeout,                18)
+STATUS_ERROR( not_started,            19)
+STATUS_ERROR( already_started,        20)
+STATUS_ERROR( aborted,                21)
+STATUS_ERROR( icmp_error,             22)
+STATUS_ERROR( tftp_error,             23)
+STATUS_ERROR( protocol_error,         24)
+STATUS_ERROR( incompatible_version,   25)
+STATUS_ERROR( security_violation,     26)
+STATUS_ERROR( crc_error,              27)
+STATUS_ERROR( end_of_media,           28)
+STATUS_ERROR( end_of_file,            31)
+STATUS_ERROR( invalid_language,       32)
+STATUS_ERROR( compromised_data,       33)
+STATUS_ERROR( http_error,             35)

external/uefi/graphics.h

@@ -0,0 +1,92 @@
+#pragma once
+#ifndef _uefi_graphics_h_
+#define _uefi_graphics_h_
+
+// This Source Code Form is part of the j6-uefi-headers project and is subject
+// to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was
+// not distributed with this file, You can obtain one at
+// http://mozilla.org/MPL/2.0/.
+
+#include <stdint.h>
+#include <uefi/types.h>
+
+namespace uefi {
+
+struct text_output_mode
+{
+	int32_t max_mode;
+	int32_t mode;
+	int32_t attribute;
+	int32_t cursor_column;
+	int32_t cursor_row;
+	bool cursor_visible;
+};
+
+struct pixel_bitmask
+{
+	uint32_t red_mask;
+	uint32_t green_mask;
+	uint32_t blue_mask;
+	uint32_t reserved_mask;
+};
+
+enum class pixel_format
+{
+	rgb8,
+	bgr8,
+	bitmask,
+	blt_only
+};
+
+struct graphics_output_mode_info
+{
+	uint32_t version;
+	uint32_t horizontal_resolution;
+	uint32_t vertical_resolution;
+	pixel_format pixel_format;
+	pixel_bitmask pixel_information;
+	uint32_t pixels_per_scanline;
+};
+
+struct graphics_output_mode
+{
+	uint32_t max_mode;
+	uint32_t mode;
+	graphics_output_mode_info *info;
+	uint64_t size_of_info;
+	uintptr_t frame_buffer_base;
+	uint64_t frame_buffer_size;
+};
+
+enum class attribute : uint64_t
+{
+	black,
+	blue,
+	green,
+	cyan,
+	red,
+	magenta,
+	brown,
+	light_gray,
+	dark_gray,
+	light_blue,
+	light_green,
+	light_cyan,
+	light_red,
+	light_magenta,
+	yellow,
+	white,
+
+	background_black      = 0x00,
+	background_blue       = 0x10,
+	background_green      = 0x20,
+	background_cyan       = 0x30,
+	background_red        = 0x40,
+	background_magenta    = 0x50,
+	background_brown      = 0x60,
+	background_light_gray = 0x70,
+};
+
+} // namespace uefi
+
+#endif

external/uefi/guid.h

@@ -0,0 +1,29 @@
+#pragma once
+#ifndef _uefi_guid_h_
+#define _uefi_guid_h_
+
+// This Source Code Form is part of the j6-uefi-headers project and is subject
+// to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was
+// not distributed with this file, You can obtain one at
+// http://mozilla.org/MPL/2.0/.
+
+#include <stdint.h>
+
+namespace uefi {
+
+struct guid
+{
+	uint32_t data1;
+	uint16_t data2;
+	uint16_t data3;
+	uint8_t data4[8];
+
+	inline bool operator==(const guid &other) const {
+		return reinterpret_cast<const uint64_t*>(this)[0] == reinterpret_cast<const uint64_t*>(&other)[0]
+			&& reinterpret_cast<const uint64_t*>(this)[1] == reinterpret_cast<const uint64_t*>(&other)[1];
+	}
+};
+
+} // namespace uefi
+
+#endif

external/uefi/protos/device_path.h

@@ -0,0 +1,30 @@
+#pragma once
+#ifndef _uefi_protos_device_path_h_
+#define _uefi_protos_device_path_h_
+
+// This file was auto generated by the j6-uefi-headers project. Please see
+// https://github.com/justinian/j6-uefi-headers for more information.
+
+#include <uefi/guid.h>
+#include <uefi/types.h>
+
+namespace uefi {
+namespace protos {
+struct device_path;
+
+struct device_path
+{
+    static constexpr uefi::guid guid{ 0x09576e91,0x6d3f,0x11d2,{0x8e,0x39,0x00,0xa0,0xc9,0x69,0x72,0x3b} };
+
+    uint8_t type;
+    uint8_t sub_type;
+    uint16_t length;
+
+protected:
+public:
+};
+
+} // namespace protos
+} // namespace uefi
+
+#endif // _uefi_protos_device_path_h_

external/uefi/protos/file.h

@@ -0,0 +1,126 @@
+#pragma once
+#ifndef _uefi_protos_file_h_
+#define _uefi_protos_file_h_
+
+// This file was auto generated by the j6-uefi-headers project. Please see
+// https://github.com/justinian/j6-uefi-headers for more information.
+
+#include <uefi/guid.h>
+#include <uefi/types.h>
+
+namespace uefi {
+namespace protos {
+struct file;
+
+struct file
+{
+    
+
+    inline uefi::status open(file ** new_handle, const wchar_t * file_name, file_mode open_mode, file_attr attributes) {
+        return _open(this, new_handle, file_name, open_mode, attributes);
+    }
+
+    inline uefi::status close() {
+        return _close(this);
+    }
+
+    inline uefi::status delete_file() {
+        return _delete_file(this);
+    }
+
+    inline uefi::status read(uint64_t * buffer_size, void * buffer) {
+        return _read(this, buffer_size, buffer);
+    }
+
+    inline uefi::status write(uint64_t * buffer_size, void * buffer) {
+        return _write(this, buffer_size, buffer);
+    }
+
+    inline uefi::status get_position(uint64_t * position) {
+        return _get_position(this, position);
+    }
+
+    inline uefi::status set_position(uint64_t position) {
+        return _set_position(this, position);
+    }
+
+    inline uefi::status get_info(const guid * info_type, uint64_t * buffer_size, void * buffer) {
+        return _get_info(this, info_type, buffer_size, buffer);
+    }
+
+    inline uefi::status set_info(const guid * info_type, uint64_t buffer_size, void * buffer) {
+        return _set_info(this, info_type, buffer_size, buffer);
+    }
+
+    inline uefi::status flush() {
+        return _flush(this);
+    }
+
+    inline uefi::status open_ex(file ** new_handle, const wchar_t * file_name, uint64_t open_mode, uint64_t attributes, file_io_token * token) {
+        return _open_ex(this, new_handle, file_name, open_mode, attributes, token);
+    }
+
+    inline uefi::status read_ex(file_io_token * token) {
+        return _read_ex(this, token);
+    }
+
+    inline uefi::status write_ex(file_io_token * token) {
+        return _write_ex(this, token);
+    }
+
+    inline uefi::status flush_ex(file_io_token * token) {
+        return _flush_ex(this, token);
+    }
+
+    uint64_t revision;
+
+protected:
+    using _open_def = uefi::status (*)(uefi::protos::file *, file **, const wchar_t *, file_mode, file_attr);
+    _open_def _open;
+
+    using _close_def = uefi::status (*)(uefi::protos::file *);
+    _close_def _close;
+
+    using _delete_file_def = uefi::status (*)(uefi::protos::file *);
+    _delete_file_def _delete_file;
+
+    using _read_def = uefi::status (*)(uefi::protos::file *, uint64_t *, void *);
+    _read_def _read;
+
+    using _write_def = uefi::status (*)(uefi::protos::file *, uint64_t *, void *);
+    _write_def _write;
+
+    using _get_position_def = uefi::status (*)(uefi::protos::file *, uint64_t *);
+    _get_position_def _get_position;
+
+    using _set_position_def = uefi::status (*)(uefi::protos::file *, uint64_t);
+    _set_position_def _set_position;
+
+    using _get_info_def = uefi::status (*)(uefi::protos::file *, const guid *, uint64_t *, void *);
+    _get_info_def _get_info;
+
+    using _set_info_def = uefi::status (*)(uefi::protos::file *, const guid *, uint64_t, void *);
+    _set_info_def _set_info;
+
+    using _flush_def = uefi::status (*)(uefi::protos::file *);
+    _flush_def _flush;
+
+    using _open_ex_def = uefi::status (*)(uefi::protos::file *, file **, const wchar_t *, uint64_t, uint64_t, file_io_token *);
+    _open_ex_def _open_ex;
+
+    using _read_ex_def = uefi::status (*)(uefi::protos::file *, file_io_token *);
+    _read_ex_def _read_ex;
+
+    using _write_ex_def = uefi::status (*)(uefi::protos::file *, file_io_token *);
+    _write_ex_def _write_ex;
+
+    using _flush_ex_def = uefi::status (*)(uefi::protos::file *, file_io_token *);
+    _flush_ex_def _flush_ex;
+
+public:
+};
+
+} // namespace protos
+} // namespace uefi
+
+#endif // _uefi_protos_file_h_

external/uefi/protos/file_info.h

@@ -0,0 +1,35 @@
+#pragma once
+#ifndef _uefi_protos_file_info_h_
+#define _uefi_protos_file_info_h_
+
+// This file was auto generated by the j6-uefi-headers project. Please see
+// https://github.com/justinian/j6-uefi-headers for more information.
+
+#include <uefi/guid.h>
+#include <uefi/types.h>
+
+namespace uefi {
+namespace protos {
+struct file_info;
+
+struct file_info
+{
+    static constexpr uefi::guid guid{ 0x09576e92,0x6d3f,0x11d2,{0x8e,0x39,0x00,0xa0,0xc9,0x69,0x72,0x3b} };
+
+    uint64_t size;
+    uint64_t file_size;
+    uint64_t physical_size;
+    time create_time;
+    time last_access_time;
+    time modification_time;
+    uint64_t attribute;
+    wchar_t file_name[];
+
+protected:
+public:
+};
+
+} // namespace protos
+} // namespace uefi
+
+#endif // _uefi_protos_file_info_h_

external/uefi/protos/graphics_output.h

@@ -0,0 +1,50 @@
+#pragma once
+#ifndef _uefi_protos_graphics_output_h_
+#define _uefi_protos_graphics_output_h_
+
+// This file was auto generated by the j6-uefi-headers project. Please see
+// https://github.com/justinian/j6-uefi-headers for more information.
+
+#include <uefi/guid.h>
+#include <uefi/types.h>
+#include <uefi/graphics.h>
+
+namespace uefi {
+namespace protos {
+struct graphics_output;
+
+struct graphics_output
+{
+    static constexpr uefi::guid guid{ 0x9042a9de,0x23dc,0x4a38,{0x96,0xfb,0x7a,0xde,0xd0,0x80,0x51,0x6a} };
+
+    inline uefi::status query_mode(uint32_t mode_number, uint64_t * size_of_info, uefi::graphics_output_mode_info ** info) {
+        return _query_mode(this, mode_number, size_of_info, info);
+    }
+
+    inline uefi::status set_mode(uint32_t mode_number) {
+        return _set_mode(this, mode_number);
+    }
+
+    inline uefi::status blt() {
+        return _blt(this);
+    }
+
+
+protected:
+    using _query_mode_def = uefi::status (*)(uefi::protos::graphics_output *, uint32_t, uint64_t *, uefi::graphics_output_mode_info **);
+    _query_mode_def _query_mode;
+
+    using _set_mode_def = uefi::status (*)(uefi::protos::graphics_output *, uint32_t);
+    _set_mode_def _set_mode;
+
+    using _blt_def = uefi::status (*)(uefi::protos::graphics_output *);
+    _blt_def _blt;
+
+public:
+    uefi::graphics_output_mode * mode;
+};
+
+} // namespace protos
+} // namespace uefi
+
+#endif // _uefi_protos_graphics_output_h_

external/uefi/protos/loaded_image.h

@@ -0,0 +1,48 @@
+#pragma once
+#ifndef _uefi_protos_loaded_image_h_
+#define _uefi_protos_loaded_image_h_
+
+// This file was auto generated by the j6-uefi-headers project. Please see
+// https://github.com/justinian/j6-uefi-headers for more information.
+
+#include <uefi/guid.h>
+#include <uefi/types.h>
+#include <uefi/tables.h>
+#include <uefi/protos/device_path.h>
+
+namespace uefi {
+namespace protos {
+struct loaded_image;
+
+struct loaded_image
+{
+    static constexpr uefi::guid guid{ 0x5b1b31a1,0x9562,0x11d2,{0x8e,0x3f,0x00,0xa0,0xc9,0x69,0x72,0x3b} };
+
+    inline uefi::status unload(uefi::handle image_handle) {
+        return _unload(image_handle);
+    }
+
+    uint32_t revision;
+    uefi::handle parent_handle;
+    uefi::system_table * system_table;
+    uefi::handle device_handle;
+    uefi::protos::device_path * file_path;
+    void * reserved;
+    uint32_t load_options_size;
+    void * load_options;
+    void * image_base;
+    uint64_t image_size;
+    uefi::memory_type image_code_type;
+    uefi::memory_type image_data_type;
+
+protected:
+    using _unload_def = uefi::status (*)(uefi::handle);
+    _unload_def _unload;
+
+public:
+};
+
+} // namespace protos
+} // namespace uefi
+
+#endif // _uefi_protos_loaded_image_h_

external/uefi/protos/simple_file_system.h

@@ -0,0 +1,36 @@
+#pragma once
+#ifndef _uefi_protos_simple_file_system_h_
+#define _uefi_protos_simple_file_system_h_
+
+// This file was auto generated by the j6-uefi-headers project. Please see
+// https://github.com/justinian/j6-uefi-headers for more information.
+
+#include <uefi/guid.h>
+#include <uefi/types.h>
+#include <uefi/protos/file.h>
+
+namespace uefi {
+namespace protos {
+struct simple_file_system;
+
+struct simple_file_system
+{
+    static constexpr uefi::guid guid{ 0x0964e5b22,0x6459,0x11d2,{0x8e,0x39,0x00,0xa0,0xc9,0x69,0x72,0x3b} };
+
+    inline uefi::status open_volume(uefi::protos::file ** root) {
+        return _open_volume(this, root);
+    }
+
+    uint64_t revision;
+
+protected:
+    using _open_volume_def = uefi::status (*)(uefi::protos::simple_file_system *, uefi::protos::file **);
+    _open_volume_def _open_volume;
+
+public:
+};
+
+} // namespace protos
+} // namespace uefi
+
+#endif // _uefi_protos_simple_file_system_h_

external/uefi/protos/simple_text_output.h

@@ -0,0 +1,92 @@
+#pragma once
+#ifndef _uefi_protos_simple_text_output_h_
+#define _uefi_protos_simple_text_output_h_
+
+// This file was auto generated by the j6-uefi-headers project. Please see
+// https://github.com/justinian/j6-uefi-headers for more information.
+
+#include <uefi/guid.h>
+#include <uefi/types.h>
+#include <uefi/graphics.h>
+
+namespace uefi {
+namespace protos {
+struct simple_text_output;
+
+struct simple_text_output
+{
+    static constexpr uefi::guid guid{ 0x387477c2,0x69c7,0x11d2,{0x8e,0x39,0x00,0xa0,0xc9,0x69,0x72,0x3b} };
+
+    inline uefi::status reset(bool extended_verification) {
+        return _reset(this, extended_verification);
+    }
+
+    inline uefi::status output_string(const wchar_t * string) {
+        return _output_string(this, string);
+    }
+
+    inline uefi::status test_string(const wchar_t * string) {
+        return _test_string(this, string);
+    }
+
+    inline uefi::status query_mode(uint64_t mode_number, uint64_t * columns, uint64_t * rows) {
+        return _query_mode(this, mode_number, columns, rows);
+    }
+
+    inline uefi::status set_mode(uint64_t mode_number) {
+        return _set_mode(this, mode_number);
+    }
+
+    inline uefi::status set_attribute(uefi::attribute attribute) {
+        return _set_attribute(this, attribute);
+    }
+
+    inline uefi::status clear_screen() {
+        return _clear_screen(this);
+    }
+
+    inline uefi::status set_cursor_position(uint64_t column, uint64_t row) {
+        return _set_cursor_position(this, column, row);
+    }
+
+    inline uefi::status enable_cursor(bool visible) {
+        return _enable_cursor(this, visible);
+    }
+
+
+protected:
+    using _reset_def = uefi::status (*)(uefi::protos::simple_text_output *, bool);
+    _reset_def _reset;
+
+    using _output_string_def = uefi::status (*)(uefi::protos::simple_text_output *, const wchar_t *);
+    _output_string_def _output_string;
+
+    using _test_string_def = uefi::status (*)(uefi::protos::simple_text_output *, const wchar_t *);
+    _test_string_def _test_string;
+
+    using _query_mode_def = uefi::status (*)(uefi::protos::simple_text_output *, uint64_t, uint64_t *, uint64_t *);
+    _query_mode_def _query_mode;
+
+    using _set_mode_def = uefi::status (*)(uefi::protos::simple_text_output *, uint64_t);
+    _set_mode_def _set_mode;
+
+    using _set_attribute_def = uefi::status (*)(uefi::protos::simple_text_output *, uefi::attribute);
+    _set_attribute_def _set_attribute;
+
+    using _clear_screen_def = uefi::status (*)(uefi::protos::simple_text_output *);
+    _clear_screen_def _clear_screen;
+
+    using _set_cursor_position_def = uefi::status (*)(uefi::protos::simple_text_output *, uint64_t, uint64_t);
+    _set_cursor_position_def _set_cursor_position;
+
+    using _enable_cursor_def = uefi::status (*)(uefi::protos::simple_text_output *, bool);
+    _enable_cursor_def _enable_cursor;
+
+public:
+    uefi::text_output_mode * mode;
+};
+
+} // namespace protos
+} // namespace uefi
+
+#endif // _uefi_protos_simple_text_output_h_

external/uefi/runtime_services.h

@@ -0,0 +1,52 @@
+#pragma once
+#ifndef _uefi_runtime_services_h_
+#define _uefi_runtime_services_h_
+
+// This Source Code Form is part of the j6-uefi-headers project and is subject
+// to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was
+// not distributed with this file, You can obtain one at
+// http://mozilla.org/MPL/2.0/.
+
+#include <stdint.h>
+#include <uefi/tables.h>
+
+namespace uefi {
+namespace rs_impl {
+	using convert_pointer = uefi::status (*)(uint64_t, void **);
+	using set_virtual_address_map = uefi::status (*)(size_t, size_t, uint32_t, memory_descriptor *);
+}
+
+struct runtime_services {
+	static constexpr uint64_t signature = 0x56524553544e5552ull;
+
+	table_header header;
+
+	// Time Services
+	void *get_time;
+	void *set_time;
+	void *get_wakeup_time;
+	void *set_wakeup_time;
+
+	// Virtual Memory Services
+	rs_impl::set_virtual_address_map set_virtual_address_map;
+	rs_impl::convert_pointer convert_pointer;
+
+	// Variable Services
+	void *get_variable;
+	void *get_next_variable_name;
+	void *set_variable;
+
+	// Miscellaneous Services
+	void *get_next_high_monotonic_count;
+	void *reset_system;
+
+	// UEFI 2.0 Capsule Services
+	void *update_capsule;
+	void *query_capsule_capabilities;
+
+	// Miscellaneous UEFI 2.0 Service
+	void *query_variable_info;
+};
+
+} // namespace uefi
+#endif

external/uefi/tables.h

@@ -0,0 +1,73 @@
+#pragma once
+#ifndef _uefi_tables_h_
+#define _uefi_tables_h_
+
+// This Source Code Form is part of the j6-uefi-headers project and is subject
+// to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was
+// not distributed with this file, You can obtain one at
+// http://mozilla.org/MPL/2.0/.
+
+#include <stdint.h>
+#include <uefi/guid.h>
+#include <uefi/types.h>
+
+namespace uefi {
+
+struct runtime_services;
+struct boot_services;
+namespace protos {
+	struct simple_text_input;
+	struct simple_text_output;
+}
+
+struct table_header
+{
+	uint64_t signature;
+	uint32_t revision;
+	uint32_t header_size;
+	uint32_t crc32;
+	uint32_t reserved;
+};
+
+struct configuration_table
+{
+	guid vendor_guid;
+	void *vendor_table;
+};
+
+struct system_table
+{
+	table_header header;
+
+	char16_t *firmware_vendor;
+	uint32_t firmware_revision;
+
+	handle console_in_handle;
+	protos::simple_text_input *con_in;
+	handle console_out_handle;
+	protos::simple_text_output *con_out;
+	handle standard_error_handle;
+	protos::simple_text_output *std_err;
+
+	runtime_services *runtime_services;
+	boot_services *boot_services;
+
+	unsigned int number_of_table_entries;
+	configuration_table *configuration_table;
+};
+
+constexpr uint32_t make_system_table_revision(int major, int minor) {
+	return (major << 16) | minor;
+}
+
+constexpr uint64_t system_table_signature = 0x5453595320494249ull;
+constexpr uint32_t system_table_revision = make_system_table_revision(2, 70);
+constexpr uint32_t specification_revision = system_table_revision;
+
+namespace vendor_guids {
+	constexpr guid acpi1{ 0xeb9d2d30,0x2d88,0x11d3,{0x9a,0x16,0x00,0x90,0x27,0x3f,0xc1,0x4d} };
+	constexpr guid acpi2{ 0x8868e871,0xe4f1,0x11d3,{0xbc,0x22,0x00,0x80,0xc7,0x3c,0x88,0x81} };
+} // namespace vendor_guids
+} // namespace uefi
+
+#endif

external/uefi/types.h

@@ -0,0 +1,157 @@
+#pragma once
+#ifndef _uefi_types_h_
+#define _uefi_types_h_
+
+// This Source Code Form is part of the j6-uefi-headers project and is subject
+// to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was
+// not distributed with this file, You can obtain one at
+// http://mozilla.org/MPL/2.0/.
+
+#include <stdint.h>
+
+namespace uefi {
+
+using handle = void *;
+
+
+//
+// Error and status code definitions
+//
+constexpr uint64_t error_bit = 0x8000000000000000ull; 
+constexpr uint64_t make_error(uint64_t e) { return e|error_bit; }
+
+enum class status : uint64_t
+{
+	success = 0,
+
+#define STATUS_WARNING(name, num) name = num,
+#define STATUS_ERROR(name, num) name = make_error(num),
+#include "uefi/errors.inc"
+#undef STATUS_WARNING
+#undef STATUS_ERROR
+};
+
+inline bool is_error(status s) { return static_cast<uint64_t>(s) & error_bit; }
+inline bool is_warning(status s) { return !is_error(s) && s != status::success; }
+
+
+//
+// Time defitions
+//
+struct time
+{
+	uint16_t year;
+	uint8_t month;
+	uint8_t day;
+	uint8_t hour;
+	uint8_t minute;
+	uint8_t second;
+	uint8_t _pad0;
+	uint32_t nanosecond;
+	int16_t time_zone;
+	uint8_t daylight;
+	uint8_t _pad1;
+};
+
+
+//
+// Memory and allocation defitions
+//
+enum class memory_type : uint32_t
+{
+	reserved,
+	loader_code,
+	loader_data,
+	boot_services_code,
+	boot_services_data,
+	runtime_services_code,
+	runtime_services_data,
+	conventional_memory,
+	unusable_memory,
+	acpi_reclaim_memory,
+	acpi_memory_nvs,
+	memory_mapped_io,
+	memory_mapped_io_port_space,
+	pal_code,
+	persistent_memory,
+	max_memory_type
+};
+
+enum class allocate_type : uint32_t
+{
+	any_pages,
+	max_address,
+	address
+};
+
+struct memory_descriptor
+{
+	memory_type type;
+	uintptr_t physical_start;
+	uintptr_t virtual_start;
+	uint64_t number_of_pages;
+	uint64_t attribute;
+};
+
+
+//
+// Event handling defitions
+//
+using event = void *;
+
+enum class evt : uint32_t
+{
+	notify_wait                   = 0x00000100,
+	notify_signal                 = 0x00000200,
+
+	signal_exit_boot_services     = 0x00000201,
+	signal_virtual_address_change = 0x60000202,
+
+	runtime                       = 0x40000000,
+	timer                         = 0x80000000
+};
+
+enum class tpl : uint64_t
+{
+	application = 4,
+	callback    = 8,
+	notify      = 16,
+	high_level  = 31
+};
+
+using event_notify = void (*)(event, void*);
+
+
+//
+// File IO defitions
+//
+struct file_io_token
+{
+	event event;
+	status status;
+	uint64_t buffer_size;
+	void *buffer;
+};
+
+enum class file_mode : uint64_t
+{
+	read   = 0x0000000000000001ull,
+	write  = 0x0000000000000002ull,
+
+	create = 0x8000000000000000ull
+};
+
+enum class file_attr : uint64_t
+{
+	none      = 0,
+	read_only = 0x0000000000000001ull,
+	hidden    = 0x0000000000000002ull,
+	system    = 0x0000000000000004ull,
+	reserved  = 0x0000000000000008ull,
+	directory = 0x0000000000000010ull,
+	archive   = 0x0000000000000020ull
+};
+
+} // namespace uefi
+
+#endif

generate_build.py

@@ -1,165 +0,0 @@
-#!/usr/bin/env python3
-
-from collections import namedtuple
-
-library = namedtuple('library', ['path', 'deps'])
-program = namedtuple('program', ['path', 'deps', 'output', 'targets'])
-source = namedtuple('source', ['name', 'input', 'output', 'action'])
-version = namedtuple('version', ['major', 'minor', 'patch', 'sha', 'dirty'])
-
-MODULES = {
-    "elf":       library('src/libraries/elf', ['kutil']),
-    "initrd":    library('src/libraries/initrd', ["kutil"]),
-    "kutil":     library('src/libraries/kutil', []),
-
-    "makerd":    program('src/tools/makerd', ["initrd", "kutil"], "makerd", ["native"]),
-
-    "boot":      program('src/boot', [], "boot.elf", ["boot"]),
-
-    "nulldrv":   program('src/drivers/nulldrv', [], "nulldrv", ["host"]),
-    "kernel":    program('src/kernel', ["elf", "initrd", "kutil"], "popcorn.elf", ["host"]),
-}
-
-
-def get_template(env, typename, name):
-    from jinja2.exceptions import TemplateNotFound
-    try:
-        return env.get_template("{}.{}.ninja.j2".format(typename, name))
-    except TemplateNotFound:
-        return env.get_template("{}.default.ninja.j2".format(typename))
-
-
-def get_sources(path, srcroot):
-    import os
-    from os.path import abspath, join, relpath, splitext
-
-    actions = {'.c': 'cc', '.cpp': 'cxx', '.s': 'nasm'}
-
-    sources = []
-    for root, dirs, files in os.walk(path):
-        for f in files:
-            base, ext = splitext(f)
-            if not ext in actions: continue
-            name = join(root, f)
-            sources.append(
-                source(
-                    relpath(name, srcroot),
-                    abspath(name),
-                    relpath(abspath(name), path) + ".o",
-                    actions[ext]))
-
-    return sources
-
-
-def get_git_version():
-    from subprocess import run
-    cp = run(['git', 'describe', '--dirty', '--abbrev=7'],
-            check=True, capture_output=True)
-    full_version = cp.stdout.decode('utf-8').strip()
-
-    dirty = False
-    parts1 = full_version.split('-')
-    if parts1[-1] == "dirty":
-        dirty = True
-        parts1 = parts1[:-1]
-
-    parts2 = parts1[0].split('.')
-
-    return version(
-        parts2[0],
-        parts2[1],
-        parts2[2],
-        parts1[-1][1:],
-        dirty)
-
-
-def main(buildroot):
-    import os
-    from os.path import abspath, dirname, isdir, join
-
-    generator = abspath(__file__)
-    srcroot = dirname(generator)
-
-    if buildroot is None:
-        buildroot = join(srcroot, "build")
-
-    if not isdir(buildroot):
-        os.mkdir(buildroot)
-
-    git_version = get_git_version()
-    print("Generating build files for Popcorn {}.{}.{}-{}...".format(
-        git_version.major, git_version.minor, git_version.patch, git_version.sha))
-
-    from jinja2 import Environment, FileSystemLoader
-    env = Environment(loader=FileSystemLoader(join(srcroot, "scripts", "templates")))
-
-    targets = {}
-    templates = set()
-    buildfiles = []
-    for name, mod in MODULES.items():
-        if isinstance(mod, program):
-            for target in mod.targets:
-                if not target in targets:
-                    targets[target] = set()
-
-                open_list = [name]
-                while open_list:
-                    depname = open_list.pop()
-                    dep = MODULES[depname]
-                    open_list.extend(dep.deps)
-                    targets[target].add(depname)
-
-        sources = get_sources(join(srcroot, mod.path), join(srcroot, "src"))
-        buildfile = join(buildroot, name + ".ninja")
-        buildfiles.append(buildfile)
-        with open(buildfile, 'w') as out:
-            #print("Generating module", name)
-            template = get_template(env, type(mod).__name__, name)
-            templates.add(template.filename)
-            out.write(template.render(
-                name=name,
-                module=mod,
-                sources=sources,
-                buildfile=buildfile,
-                version=git_version))
-
-    for target, mods in targets.items():
-        root = join(buildroot, target)
-        if not isdir(root):
-            os.mkdir(root)
-
-        buildfile = join(root, "target.ninja")
-        buildfiles.append(buildfile)
-        with open(buildfile, 'w') as out:
-            #print("Generating target", target)
-            template = get_template(env, "target", target)
-            templates.add(template.filename)
-            out.write(template.render(
-                target=target,
-                modules=mods,
-                buildfile=buildfile,
-                version=git_version))
-
-    buildfile = join(buildroot, "build.ninja")
-    buildfiles.append(buildfile)
-    with open(buildfile, 'w') as out:
-        #print("Generating main build.ninja")
-        template = env.get_template('build.ninja.j2')
-        templates.add(template.filename)
-
-        out.write(template.render(
-            targets=targets,
-            buildroot=buildroot,
-            srcroot=srcroot,
-            buildfile=buildfile,
-            buildfiles=buildfiles,
-            templates=[abspath(f) for f in templates],
-            generator=generator,
-            version=git_version))
-
-if __name__ == "__main__":
-    import sys
-    buildroot = None
-    if len(sys.argv) > 1:
-        buildroot = sys.argv[1]
-    main(buildroot)

modules.yaml

@@ -0,0 +1,321 @@
+name: jsix
+templates: scripts/templates
+modules:
+    kernel:
+        kind: exe
+        output: jsix.elf
+        target: host
+        deps:
+            - cpu
+            - kutil
+        includes:
+            - src/kernel
+        source:
+            - src/kernel/apic.cpp
+            - src/kernel/assert.cpp
+            - src/kernel/boot.s
+            - src/kernel/clock.cpp
+            - src/kernel/console.cpp
+            - src/kernel/cpprt.cpp
+            - src/kernel/cpu.cpp
+            - src/kernel/debug.cpp
+            - src/kernel/debug.s
+            - src/kernel/device_manager.cpp
+            - src/kernel/frame_allocator.cpp
+            - src/kernel/fs/gpt.cpp
+            - src/kernel/gdt.cpp
+            - src/kernel/gdt.s
+            - src/kernel/hpet.cpp
+            - src/kernel/interrupts.cpp
+            - src/kernel/interrupts.s
+            - src/kernel/io.cpp
+            - src/kernel/loader.s
+            - src/kernel/log.cpp
+            - src/kernel/main.cpp
+            - src/kernel/memory_bootstrap.cpp
+            - src/kernel/msr.cpp
+            - src/kernel/objects/channel.cpp
+            - src/kernel/objects/endpoint.cpp
+            - src/kernel/objects/kobject.cpp
+            - src/kernel/objects/thread.cpp
+            - src/kernel/objects/process.cpp
+            - src/kernel/objects/system.cpp
+            - src/kernel/objects/vm_area.cpp
+            - src/kernel/page_table.cpp
+            - src/kernel/pci.cpp
+            - src/kernel/scheduler.cpp
+            - src/kernel/serial.cpp
+            - src/kernel/symbol_table.cpp
+            - src/kernel/syscall.cpp
+            - src/kernel/syscall.s
+            - src/kernel/syscalls/channel.cpp
+            - src/kernel/syscalls/endpoint.cpp
+            - src/kernel/syscalls/object.cpp
+            - src/kernel/syscalls/process.cpp
+            - src/kernel/syscalls/system.cpp
+            - src/kernel/syscalls/thread.cpp
+            - src/kernel/syscalls/vm_area.cpp
+            - src/kernel/task.s
+            - src/kernel/vm_mapper.cpp
+            - src/kernel/vm_space.cpp
+
+    boot:
+        kind: exe
+        target: boot
+        output: boot.efi
+        deps:
+            - cpu
+        source:
+            - src/boot/main.cpp
+            - src/boot/console.cpp
+            - src/boot/error.cpp
+            - src/boot/fs.cpp
+            - src/boot/hardware.cpp
+            - src/boot/loader.cpp
+            - src/boot/memory.cpp
+            - src/boot/paging.cpp
+            - src/boot/status.cpp
+            - src/boot/support.cpp
+
+    nulldrv:
+        kind: exe
+        target: user
+        output: nulldrv.elf
+        deps:
+          - libc
+        source:
+            - src/drivers/nulldrv/io.cpp
+            - src/drivers/nulldrv/main.cpp
+            - src/drivers/nulldrv/serial.cpp
+
+    fb:
+        kind: exe
+        target: user
+        output: fb.elf
+        deps:
+          - libc
+        source:
+            - src/drivers/fb/font.cpp
+            - src/drivers/fb/main.cpp
+            - src/drivers/fb/screen.cpp
+            - src/drivers/fb/scrollback.cpp
+
+    kutil:
+        kind: lib
+        output: libkutil.a
+        includes:
+            - src/libraries/kutil/include
+        source:
+            - src/libraries/kutil/assert.cpp
+            - src/libraries/kutil/bip_buffer.cpp
+            - src/libraries/kutil/heap_allocator.cpp
+            - src/libraries/kutil/logger.cpp
+            - src/libraries/kutil/memory.cpp
+            - src/libraries/kutil/printf.c
+
+    cpu:
+        kind: lib
+        output: libcpu.a
+        includes:
+            - src/libraries/cpu/include
+        source:
+            - src/libraries/cpu/cpu.cpp
+
+
+    libc:
+        kind: lib
+        output: libc.a
+        includes:
+          - src/libraries/libc/include
+        target: user
+        defines:
+            - DISABLE_SSE
+            - LACKS_UNISTD_H
+            - LACKS_FCNTL_H
+            - LACKS_SYS_PARAM_H
+            - LACKS_SYS_MMAN_H
+            - LACKS_SCHED_H
+            - LACKS_STRINGS_H
+            - HAVE_MMAP=0
+              #- LACKS_STRING_H
+              #- LACKS_ERRNO_H
+              #- LACKS_STDLIB_H
+              #- LACKS_TIME_H
+        source:
+            - src/libraries/libc/arch/x86_64/_Exit.s
+            - src/libraries/libc/arch/x86_64/crt0.s
+            - src/libraries/libc/arch/x86_64/init_libc.c
+            - src/libraries/libc/arch/x86_64/syscalls.s
+            - src/libraries/libc/ctype/isalnum.c
+            - src/libraries/libc/ctype/isalpha.c
+            - src/libraries/libc/ctype/isblank.c
+            - src/libraries/libc/ctype/iscntrl.c
+            - src/libraries/libc/ctype/isdigit.c
+            - src/libraries/libc/ctype/isgraph.c
+            - src/libraries/libc/ctype/islower.c
+            - src/libraries/libc/ctype/isprint.c
+            - src/libraries/libc/ctype/ispunct.c
+            - src/libraries/libc/ctype/isspace.c
+            - src/libraries/libc/ctype/isupper.c
+            - src/libraries/libc/ctype/isxdigit.c
+            - src/libraries/libc/ctype/tolower.c
+            - src/libraries/libc/ctype/toupper.c
+            - src/libraries/libc/inttypes/imaxabs.c
+            - src/libraries/libc/inttypes/imaxdiv.c
+            - src/libraries/libc/inttypes/strtoimax.c
+            - src/libraries/libc/inttypes/strtoumax.c
+            - src/libraries/libc/locale/localeconv.c
+            - src/libraries/libc/locale/setlocale.c
+            - src/libraries/libc/j6libc/assert.c
+            - src/libraries/libc/j6libc/errno.c
+            - src/libraries/libc/j6libc/allocpages.c
+            - src/libraries/libc/j6libc/atomax.c
+            - src/libraries/libc/j6libc/closeall.c
+            - src/libraries/libc/j6libc/close.c
+            - src/libraries/libc/j6libc/digits.c
+            - src/libraries/libc/j6libc/filemode.c
+            - src/libraries/libc/j6libc/fillbuffer.c
+            - src/libraries/libc/j6libc/flushbuffer.c
+            - src/libraries/libc/j6libc/is_leap.c
+            - src/libraries/libc/j6libc/load_lc_collate.c
+            - src/libraries/libc/j6libc/load_lc_ctype.c
+            - src/libraries/libc/j6libc/load_lc_messages.c
+            - src/libraries/libc/j6libc/load_lc_monetary.c
+            - src/libraries/libc/j6libc/load_lc_numeric.c
+            - src/libraries/libc/j6libc/load_lc_time.c
+            - src/libraries/libc/j6libc/load_lines.c
+            - src/libraries/libc/j6libc/open.c
+            - src/libraries/libc/j6libc/prepread.c
+            - src/libraries/libc/j6libc/prepwrite.c
+            - src/libraries/libc/j6libc/print.c
+            - src/libraries/libc/j6libc/rename.c
+            - src/libraries/libc/j6libc/scan.c
+            - src/libraries/libc/j6libc/seed.c
+            - src/libraries/libc/j6libc/seek.c
+            - src/libraries/libc/j6libc/stdinit.c
+            - src/libraries/libc/j6libc/strtox_main.c
+            - src/libraries/libc/j6libc/strtox_prelim.c
+            - src/libraries/libc/j6libc/sbrk.c
+            - src/libraries/libc/signal/raise.c
+            - src/libraries/libc/signal/signal.c
+            - src/libraries/libc/stdio/clearerr.c
+            - src/libraries/libc/stdio/fclose.c
+            - src/libraries/libc/stdio/feof.c
+            - src/libraries/libc/stdio/ferror.c
+            - src/libraries/libc/stdio/fflush.c
+            - src/libraries/libc/stdio/fgetc.c
+            - src/libraries/libc/stdio/fgetpos.c
+            - src/libraries/libc/stdio/fgets.c
+            - src/libraries/libc/stdio/fopen.c
+            - src/libraries/libc/stdio/fprintf.c
+            - src/libraries/libc/stdio/fputc.c
+            - src/libraries/libc/stdio/fputs.c
+            - src/libraries/libc/stdio/fread.c
+            - src/libraries/libc/stdio/freopen.c
+            - src/libraries/libc/stdio/fscanf.c
+            - src/libraries/libc/stdio/fseek.c
+            - src/libraries/libc/stdio/fsetpos.c
+            - src/libraries/libc/stdio/ftell.c
+            - src/libraries/libc/stdio/fwrite.c
+            - src/libraries/libc/stdio/getc.c
+            - src/libraries/libc/stdio/getchar.c
+            - src/libraries/libc/stdio/perror.c
+            - src/libraries/libc/stdio/printf.c
+            - src/libraries/libc/stdio/putc.c
+            - src/libraries/libc/stdio/putchar.c
+            - src/libraries/libc/stdio/puts.c
+            - src/libraries/libc/stdio/remove.c
+            - src/libraries/libc/stdio/rename.c
+            - src/libraries/libc/stdio/rewind.c
+            - src/libraries/libc/stdio/scanf.c
+            - src/libraries/libc/stdio/setbuf.c
+            - src/libraries/libc/stdio/setvbuf.c
+            - src/libraries/libc/stdio/snprintf.c
+            - src/libraries/libc/stdio/sprintf.c
+            - src/libraries/libc/stdio/sscanf.c
+            - src/libraries/libc/stdio/tmpfile.c
+            - src/libraries/libc/stdio/tmpnam.c
+            - src/libraries/libc/stdio/ungetc.c
+            - src/libraries/libc/stdio/vfprintf.c
+            - src/libraries/libc/stdio/vfscanf.c
+            - src/libraries/libc/stdio/vprintf.c
+            - src/libraries/libc/stdio/vscanf.c
+            - src/libraries/libc/stdio/vsnprintf.c
+            - src/libraries/libc/stdio/vsprintf.c
+            - src/libraries/libc/stdio/vsscanf.c
+            - src/libraries/libc/stdlib/abort.c
+            - src/libraries/libc/stdlib/abs.c
+            - src/libraries/libc/stdlib/atexit.c
+            - src/libraries/libc/stdlib/atoi.c
+            - src/libraries/libc/stdlib/atol.c
+            - src/libraries/libc/stdlib/atoll.c
+            - src/libraries/libc/stdlib/bsearch.c
+            - src/libraries/libc/stdlib/div.c
+            - src/libraries/libc/stdlib/exit.c
+            - src/libraries/libc/stdlib/_Exit.c
+            - src/libraries/libc/stdlib/getenv.c
+            - src/libraries/libc/stdlib/labs.c
+            - src/libraries/libc/stdlib/ldiv.c
+            - src/libraries/libc/stdlib/llabs.c
+            - src/libraries/libc/stdlib/lldiv.c
+            - src/libraries/libc/stdlib/malloc.c
+            - src/libraries/libc/stdlib/qsort.c
+            - src/libraries/libc/stdlib/rand.c
+            - src/libraries/libc/stdlib/srand.c
+            - src/libraries/libc/stdlib/strtol.c
+            - src/libraries/libc/stdlib/strtoll.c
+            - src/libraries/libc/stdlib/strtoul.c
+            - src/libraries/libc/stdlib/strtoull.c
+            - src/libraries/libc/stdlib/system.c
+            - src/libraries/libc/string/memchr.c
+            - src/libraries/libc/string/memcmp.c
+            - src/libraries/libc/string/memcpy.c
+            - src/libraries/libc/string/memmove.c
+            - src/libraries/libc/string/memset.c
+            - src/libraries/libc/string/strcat.c
+            - src/libraries/libc/string/strchr.c
+            - src/libraries/libc/string/strcmp.c
+            - src/libraries/libc/string/strcoll.c
+            - src/libraries/libc/string/strcpy.c
+            - src/libraries/libc/string/strcspn.c
+            - src/libraries/libc/string/strerror.c
+            - src/libraries/libc/string/strlen.c
+            - src/libraries/libc/string/strncat.c
+            - src/libraries/libc/string/strncmp.c
+            - src/libraries/libc/string/strncpy.c
+            - src/libraries/libc/string/strpbrk.c
+            - src/libraries/libc/string/strrchr.c
+            - src/libraries/libc/string/strspn.c
+            - src/libraries/libc/string/strstr.c
+            - src/libraries/libc/string/strtok.c
+            - src/libraries/libc/string/strxfrm.c
+            - src/libraries/libc/time/asctime.c
+            - src/libraries/libc/time/clock.c
+            - src/libraries/libc/time/ctime.c
+            - src/libraries/libc/time/difftime.c
+            - src/libraries/libc/time/gmtime.c
+            - src/libraries/libc/time/localtime.c
+            - src/libraries/libc/time/mktime.c
+            - src/libraries/libc/time/strftime.c
+            - src/libraries/libc/time/time.c
+            - src/libraries/libc/time/timespec_get.c
+
+    tests:
+        kind: exe
+        target: native
+        output: tests
+        deps:
+            - kutil
+        source:
+            - src/tests/constexpr_hash.cpp
+            - src/tests/linked_list.cpp
+            - src/tests/logger.cpp
+            - src/tests/heap_allocator.cpp
+            - src/tests/main.cpp
+            - src/tests/map.cpp
+            - src/tests/vector.cpp
+overlays:
+    - url: https://f000.backblazeb2.com/file/jsix-os/sysroot-llvm8-20190706.tar.bz2
+      path: sysroot
+    - url: https://f000.backblazeb2.com/file/jsix-os/sysroot-j6libc-8cb8ce7.tar.bz2
+      path: sysroot

other_software.md

@@ -0,0 +1,89 @@
+# Included works
+
+jsix includes and/or is derived from a number of other works, listed here.
+
+## Catch2
+
+jsix uses [Catch2][] for testing. Catch2 is released under the terms of the
+Boost Software license:
+
+[Catch2]: https://github.com/catchorg/Catch2
+
+> Boost Software License - Version 1.0 - August 17th, 2003
+> 
+> Permission is hereby granted, free of charge, to any person or organization
+> obtaining a copy of the software and accompanying documentation covered by
+> this license (the "Software") to use, reproduce, display, distribute,
+> execute, and transmit the Software, and to prepare derivative works of the
+> Software, and to permit third-parties to whom the Software is furnished to
+> do so, all subject to the following:
+> 
+> The copyright notices in the Software and this entire statement, including
+> the above license grant, this restriction and the following disclaimer,
+> must be included in all copies of the Software, in whole or in part, and
+> all derivative works of the Software, unless such copies or derivative
+> works are solely in the form of machine-executable object code generated by
+> a source language processor.
+> 
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+> FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+> SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+> FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+> ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+> DEALINGS IN THE SOFTWARE.
+
+## cpptoml
+
+jsix uses the [cpptoml][] library for parsing TOML configuration files. cpptoml
+is released under the terms of the MIT license:
+
+[cpptoml]: https://github.com/skystrife/cpptoml
+
+> Copyright (c) 2014 Chase Geigle
+>
+> Permission is hereby granted, free of charge, to any person obtaining a copy of
+> this software and associated documentation files (the "Software"), to deal in
+> the Software without restriction, including without limitation the rights to
+> use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+> the Software, and to permit persons to whom the Software is furnished to do so,
+> subject to the following conditions:
+> 
+> The above copyright notice and this permission notice shall be included in all
+> copies or substantial portions of the Software.
+> 
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+> FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+> COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+> IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+> CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+## printf
+
+jsix uses Marco Paland's tiny [printf][] library for its `*printf()` functions,
+which is also released under the terms of the MIT license:
+
+[printf]: https://github.com/mpaland/printf
+
+> The MIT License (MIT)
+>
+> Copyright (c) 2014 Marco Paland
+>
+> Permission is hereby granted, free of charge, to any person obtaining a copy
+> of this software and associated documentation files (the "Software"), to deal
+> in the Software without restriction, including without limitation the rights
+> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+> copies of the Software, and to permit persons to whom the Software is
+> furnished to do so, subject to the following conditions:
+>
+> The above copyright notice and this permission notice shall be included in all
+> copies or substantial portions of the Software.
+>
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+> SOFTWARE.

qemu.sh

@@ -1,22 +1,80 @@
 #!/usr/bin/env bash
 
-build=${1:-"$(dirname $0)/build"}
-ninja -C $build
-
+build="$(dirname $0)/build"
+assets="$(dirname $0)/assets"
+debug=""
+debugtarget="${build}/jsix.elf"
+flash_name="ovmf_vars"
+gfx="-nographic"
+vga="-vga none"
 kvm=""
-if [[ -f /dev/kvm ]]; then
-	kvm="--enable-kvm"
+cpu="Broadwell,+pdpe1gb"
+
+for arg in $@; do
+	case "${arg}" in
+		--debugboot)
+			debug="-s -S"
+			debugtarget="${build}/boot/boot.efi"
+			flash_name="ovmf_vars_d"
+			;;
+		--debug)
+			debug="-s -S"
+			flash_name="ovmf_vars_d"
+			;;
+		--gfx)
+			gfx=""
+			vga=""
+			;;
+		--vga)
+			vga=""
+			;;
+		--kvm)
+			kvm="-enable-kvm"
+			cpu="host"
+			;;
+		*)
+			build="${arg}"
+			;;
+	esac
+done
+
+if [[ ! -c /dev/kvm ]]; then
+	kvm=""
+fi
+
+if ! ninja -C "${build}"; then
+	exit 1
+fi
+
+if [[ -n $TMUX ]]; then
+	if [[ -n $debug ]]; then
+		tmux split-window -h "gdb ${debugtarget}" &
+	else
+		tmux split-window -h -l 80 "sleep 1; telnet localhost 45455" &
+		tmux last-pane
+		tmux split-window -l 10 "sleep 1; telnet localhost 45454" &
+	fi
+elif [[ $DESKTOP_SESSION = "i3" ]]; then
+	if [[ -n $debug ]]; then
+		i3-msg exec i3-sensible-terminal -- -e "gdb ${PWD}/${build}/jsix.elf" &
+	else
+		i3-msg exec i3-sensible-terminal -- -e 'telnet localhost 45454' &
+	fi
 fi
 
 exec qemu-system-x86_64 \
-	-drive "if=pflash,format=raw,file=${build}/flash.img" \
-	-drive "format=raw,file=${build}/popcorn.img" \
-	-smp 1 \
+	-drive "if=pflash,format=raw,readonly,file=${assets}/ovmf/x64/ovmf_code.fd" \
+	-drive "if=pflash,format=raw,file=${build}/${flash_name}.fd" \
+	-drive "format=raw,file=${build}/jsix.img" \
+	-device "isa-debug-exit,iobase=0xf4,iosize=0x04" \
+	-monitor telnet:localhost:45454,server,nowait \
+	-serial stdio \
+	-serial telnet:localhost:45455,server,nowait \
+	-smp 4 \
 	-m 512 \
 	-d mmu,int,guest_errors \
-	-D popcorn.log \
-	-cpu Broadwell \
+	-D jsix.log \
+	-cpu "${cpu}" \
 	-M q35 \
 	-no-reboot \
-	-nographic \
-	$kvm
+	$gfx $vga $kvm $debug

scripts/build_symbol_table.py

@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+#
+# Generate the jsix style symbol table. The format in memory of this table
+# is as follows:
+#
+# <num_entires> : 8 bytes
+# <index>       : 16 * N bytes
+# <name data>   : variable
+#
+# Each index entry has the format
+# <symbol address> : 8 bytes
+# <offset of name> : 8 bytes
+#
+# Name offsets are from the start of the symbol table as a whole. (ie,
+# where <num_entries> is located.)
+
+def parse_syms(infile):
+    """Take the output of the `nm` command, and parse it into a tuple
+    representing the symbols in the text segment of the binary. Returns
+    a list of (address, symbol_name)."""
+
+    from cxxfilt import demangle, InvalidName
+
+    syms = []
+    for line in sys.stdin:
+        addr, t, mangled = line.split()
+        if t not in "tTvVwW": continue
+
+        try:
+            name = demangle(mangled)
+        except InvalidName:
+            continue
+
+        addr = int(addr, base=16)
+        syms.append((addr, name))
+
+    return sorted(syms)
+
+
+def write_table(syms, outfile):
+    """Write the given symbol table as generated by parse_syms()
+    to the outfile, index first, and then name character data."""
+
+    import struct
+
+    outfile.write(struct.pack("@Q", len(syms)))
+    index_pos = outfile.tell()
+
+    outfile.seek(struct.calcsize("@QQ") * len(syms), 1)
+    nul = b'\0'
+
+    positions = {}
+    for s in syms:
+        addr, name = s
+        positions[addr] = outfile.tell()
+
+        data = name.encode('utf-8')
+        outfile.write(name.encode('utf-8'))
+        outfile.write(nul)
+
+    outfile.seek(index_pos)
+    for s in syms:
+        addr = s[0]
+        pos = positions[addr]
+        outfile.write(struct.pack("@QQ", addr, pos))
+
+
+if __name__ == "__main__":
+    import sys
+    if len(sys.argv) != 2:
+        print(f"Usage: {sys.argv[0]} <output>")
+        sys.exit(1)
+
+    outfile = open(sys.argv[1], "wb")
+    write_table(parse_syms(sys.stdin), outfile)

scripts/build_sysroot.sh

@@ -0,0 +1,131 @@
+#!/usr/bin/env bash
+
+TARGET="x86_64-elf"
+LLVM_BRANCH="release_80"
+
+TOOLS="clang lld" # lld libunwind libcxxabi libcxx"
+PROJECTS="compiler-rt libcxxabi libcxx libunwind"
+#RUNTIMES="compiler-rt libcxxabi libcxx libunwind"
+
+set -e
+
+README=$(realpath "$(dirname $0)/readme_for_prebuilt_sysroots.md")
+SYSROOT=$(realpath "$(dirname $0)/../sysroot")
+WORK=$(realpath "$(dirname $0)/sysroot")
+mkdir -p "${SYSROOT}"
+mkdir -p "${WORK}"
+
+export CC=clang
+export CXX=clang++
+
+if [[ ! -d "${WORK}/llvm" ]]; then
+	echo "Downloading LLVM..."
+	git clone -q \
+		--branch "${LLVM_BRANCH}" \
+		--depth 1 \
+		"https://git.llvm.org/git/llvm.git" "${WORK}/llvm"
+fi
+
+for tool in ${TOOLS}; do
+	if [[ ! -d "${WORK}/llvm/tools/${tool}" ]]; then
+		echo "Downloading ${tool}..."
+		git clone -q \
+			--branch "${LLVM_BRANCH}" \
+			--depth 1 \
+			"https://git.llvm.org/git/${tool}.git" "${WORK}/llvm/tools/${tool}"
+	fi
+done
+
+if [[ ! -d "${WORK}/llvm/tools/clang/tools/extra" ]]; then
+	echo "Downloading clang-tools-extra..."
+	git clone -q \
+		--branch "${LLVM_BRANCH}" \
+		--depth 1 \
+		"https://git.llvm.org/git/clang-tools-extra.git" "${WORK}/llvm/tools/clang/tools/extra"
+fi
+
+for proj in ${PROJECTS}; do
+	if [[ ! -d "${WORK}/llvm/projects/${proj}" ]]; then
+		echo "Downloading ${proj}..."
+		git clone -q \
+			--branch "${LLVM_BRANCH}" \
+			--depth 1 \
+			"https://git.llvm.org/git/${proj}.git" "${WORK}/llvm/projects/${proj}"
+	fi
+done
+
+for proj in ${RUNTIMES}; do
+	if [[ ! -d "${WORK}/llvm/runtimes/${proj}" ]]; then
+		echo "Downloading ${proj}..."
+		git clone -q \
+			--branch "${LLVM_BRANCH}" \
+			--depth 1 \
+			"https://git.llvm.org/git/${proj}.git" "${WORK}/llvm/runtime/${proj}"
+	fi
+done
+
+mkdir -p "${WORK}/build/llvm"
+pushd "${WORK}/build/llvm"
+
+echo "Configuring LLVM..."
+
+cmake -G Ninja \
+	-DCLANG_DEFAULT_RTLIB=compiler-rt \
+	-DCLANG_DEFAULT_STD_C=c11 \
+	-DCLANG_DEFAULT_STD_CXX=cxx14 \
+	-DCMAKE_BUILD_TYPE=Release \
+	-DCMAKE_C_COMPILER="clang" \
+	-DCMAKE_CXX_COMPILER="clang++" \
+	-DCMAKE_CXX_FLAGS="-Wno-unused-parameter -D_LIBCPP_HAS_NO_ALIGNED_ALLOCATION -D_LIBUNWIND_IS_BAREMETAL=1 -U_LIBUNWIND_SUPPORT_DWARF_UNWIND" \
+	-DCMAKE_INSTALL_PREFIX="${SYSROOT}" \
+	-DCMAKE_MAKE_PROGRAM=`which ninja` \
+	-DDEFAULT_SYSROOT="${SYSROOT}" \
+	-DLIBCXX_CXX_ABI=libcxxabi \
+	-DLIBCXX_CXX_ABI_INCLUDE_PATHS="${WORK}/llvm/projects/libcxxabi/include" \
+	-DLIBCXX_CXX_ABI_LIBRARY_PATH=lib \
+	-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF \
+	-DLIBCXX_ENABLE_NEW_DELETE_DEFINITIONS=ON \
+	-DLIBCXX_ENABLE_SHARED=OFF \
+	-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON \
+	-DLIBCXX_ENABLE_THREADS=OFF \
+	-DLIBCXX_INCLUDE_BENCHMARKS=OFF \
+	-DLIBCXX_USE_COMPILER_RT=ON \
+	-DLIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS=OFF \
+	-DLIBCXXABI_ENABLE_SHARED=OFF \
+	-DLIBCXXABI_ENABLE_STATIC_UNWINDER=ON \
+	-DLIBCXXABI_ENABLE_THREADS=OFF \
+	-DLIBCXXABI_LIBCXX_PATH="${WORK}/llvm/projects/libcxx" \
+	-DLIBCXXABI_USE_COMPILER_RT=ON \
+	-DLIBCXXABI_USE_LLVM_UNWINDER=ON \
+	-DLIBUNWIND_ENABLE_SHARED=OFF \
+	-DLIBUNWIND_ENABLE_THREADS=OFF \
+	-DLIBUNWIND_USE_COMPILER_RT=ON \
+	-DLLVM_CONFIG_PATH="${SYSROOT}/bin/llvm-config" \
+	-DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-unknown-elf" \
+	-DLLVM_ENABLE_LIBCXX=ON \
+	-DLLVM_ENABLE_LLD=ON \
+	-DLLVM_ENABLE_PIC=OFF \
+	-DLLVM_ENABLE_THREADS=OFF \
+	-DLLVM_INSTALL_BINUTILS_SYMLINKS=ON \
+	-DLLVM_TARGETS_TO_BUILD="X86" \
+	${WORK}/llvm > cmake_configure.log
+
+#  -DCMAKE_ASM_COMPILER=nasm \
+#  -DCMAKE_LINKER="${SYSROOT}/bin/ld.lld" \
+#  -DCOMPILER_RT_ENABLE_LLD=ON \
+#  -DLIBCXX_ENABLE_LLD=ON \
+#  -DLIBCXX_ENABLE_STATIC_UNWINDER=ON \
+#  -DLIBCXXABI_ENABLE_LLD=ON \
+#  -DLIBUNWIND_ENABLE_LLD=ON \
+#  -DLLVM_ENABLE_PROJECTS="libcxx;libcxxabi;libunwind;compiler-rt" \
+#  -DCOMPILER_RT_BAREMETAL_BUILD=ON \
+#  -DLIBCXXABI_BAREMETAL=ON \
+
+echo "Building LLVM..."
+ninja && ninja install
+ninja cxx cxxabi compiler-rt
+ninja install-compiler-rt install-cxx install-cxxabi
+popd
+
+
+cp "${README}" "${SYSROOT}/README.md"

scripts/build_sysroot_clang.sh

@@ -1,220 +0,0 @@
-#!/usr/bin/env bash
-
-TARGET="x86_64-elf"
-NASM_VERSION="2.13.03"
-BINUTILS_VERSION="2.31.1"
-
-TOOLS="clang" # lld libunwind libcxxabi libcxx"
-PROJECTS="compiler-rt libcxxabi libcxx libunwind"
-#RUNTIMES="compiler-rt libcxxabi libcxx libunwind"
-
-set -e
-
-SYSROOT=$(realpath "$(dirname $0)/../sysroot")
-WORK=$(realpath "$(dirname $0)/sysroot")
-mkdir -p "${SYSROOT}"
-mkdir -p "${WORK}"
-
-export CC=clang
-export CXX=clang++
-
-function build_nasm() {
-	if [[ ! -d "${WORK}/nasm-${NASM_VERSION}" ]]; then
-		echo "Downloading NASM..."
-		tarball="nasm-${NASM_VERSION}.tar.gz"
-		curl -sSOL "https://www.nasm.us/pub/nasm/releasebuilds/${NASM_VERSION}/${tarball}"
-		tar xzf "${tarball}" -C "${WORK}" && rm "${tarball}"
-	fi
-
-	mkdir -p "${WORK}/build/nasm"
-	pushd "${WORK}/build/nasm"
-
-	if [[ ! -f "${WORK}/build/nasm/config.cache" ]]; then
-		echo "Configuring NASM..."
-		"${WORK}/nasm-${NASM_VERSION}/configure" \
-			--quiet \
-			--config-cache \
-			--disable-werror \
-			--prefix="${SYSROOT}" \
-			--srcdir="${WORK}/nasm-${NASM_VERSION}"
-	fi
-
-	echo "Building NASM..."
-	(make -j && make install) > "${WORK}/build/nasm_build.log"
-	popd
-}
-
-function build_binutils() {
-	if [[ ! -d "${WORK}/binutils-${BINUTILS_VERSION}" ]]; then
-		echo "Downloading binutils..."
-		tarball="binutils-${BINUTILS_VERSION}.tar.gz"
-		curl -sSOL "https://ftp.gnu.org/gnu/binutils/${tarball}"
-		tar xzf "${tarball}" -C "${WORK}" && rm "${tarball}"
-	fi
-
-	mkdir -p "${WORK}/build/binutils"
-	pushd "${WORK}/build/binutils"
-
-	if [[ ! -f "${WORK}/build/binutils/config.cache" ]]; then
-		echo "Configuring binutils..."
-		"${WORK}/binutils-${BINUTILS_VERSION}/configure" \
-			--quiet \
-			--config-cache \
-			--target="${TARGET}" \
-			--prefix="${SYSROOT}" \
-			--with-sysroot="${SYSROOT}" \
-			--with-lib-path="${SYSROOT}/lib" \
-			--disable-nls \
-			--disable-werror
-	fi
-
-	echo "Building binutils..."
-	(make -j && make install) > "${WORK}/build/binutils_build.log"
-	popd
-}
-
-function build_llvm() {
-	if [[ ! -d "${WORK}/llvm" ]]; then
-		echo "Downloading LLVM..."
-		git clone -q \
-			--branch release_70 \
-			--depth 1 \
-			"https://git.llvm.org/git/llvm.git" "${WORK}/llvm"
-	fi
-
-	for tool in ${TOOLS}; do
-		if [[ ! -d "${WORK}/llvm/tools/${tool}" ]]; then
-			echo "Downloading ${tool}..."
-			git clone -q \
-				--branch release_70 \
-				--depth 1 \
-				"https://git.llvm.org/git/${tool}.git" "${WORK}/llvm/tools/${tool}"
-		fi
-	done
-
-	if [[ ! -d "${WORK}/llvm/tools/clang/tools/extra" ]]; then
-		echo "Downloading clang-tools-extra..."
-		git clone -q \
-			--branch release_70 \
-			--depth 1 \
-			"https://git.llvm.org/git/clang-tools-extra.git" "${WORK}/llvm/tools/clang/tools/extra"
-	fi
-
-	for proj in ${PROJECTS}; do
-		if [[ ! -d "${WORK}/llvm/projects/${proj}" ]]; then
-			echo "Downloading ${proj}..."
-			git clone -q \
-				--branch release_70 \
-				--depth 1 \
-				"https://git.llvm.org/git/${proj}.git" "${WORK}/llvm/projects/${proj}"
-		fi
-	done
-
-	for proj in ${RUNTIMES}; do
-		if [[ ! -d "${WORK}/llvm/runtimes/${proj}" ]]; then
-			echo "Downloading ${proj}..."
-			git clone -q \
-				--branch release_70 \
-				--depth 1 \
-				"https://git.llvm.org/git/${proj}.git" "${WORK}/llvm/runtime/${proj}"
-		fi
-	done
-
-	mkdir -p "${WORK}/build/llvm"
-	pushd "${WORK}/build/llvm"
-
-	echo "Configuring LLVM..."
-
-	cmake -G Ninja \
-		-DCLANG_DEFAULT_RTLIB=compiler-rt \
-		-DCLANG_DEFAULT_STD_C=c11 \
-		-DCLANG_DEFAULT_STD_CXX=cxx14 \
-		-DCMAKE_BUILD_TYPE=Release \
-		-DCMAKE_C_COMPILER="clang" \
-		-DCMAKE_CXX_COMPILER="clang++" \
-		-DCMAKE_CXX_FLAGS="-Wno-unused-parameter -D_LIBCPP_HAS_NO_ALIGNED_ALLOCATION -D_LIBUNWIND_IS_BAREMETAL=1 -U_LIBUNWIND_SUPPORT_DWARF_UNWIND" \
-		-DCMAKE_INSTALL_PREFIX="${SYSROOT}" \
-		-DCMAKE_MAKE_PROGRAM=`which ninja` \
-		-DDEFAULT_SYSROOT="${SYSROOT}" \
-		-DLIBCXX_CXX_ABI=libcxxabi \
-		-DLIBCXX_CXX_ABI_INCLUDE_PATHS="${WORK}/llvm/projects/libcxxabi/include" \
-		-DLIBCXX_CXX_ABI_LIBRARY_PATH=lib \
-		-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF \
-		-DLIBCXX_ENABLE_NEW_DELETE_DEFINITIONS=ON \
-		-DLIBCXX_ENABLE_SHARED=OFF \
-		-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON \
-		-DLIBCXX_ENABLE_THREADS=OFF \
-		-DLIBCXX_INCLUDE_BENCHMARKS=OFF \
-		-DLIBCXX_USE_COMPILER_RT=ON \
-		-DLIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS=OFF \
-		-DLIBCXXABI_ENABLE_SHARED=OFF \
-		-DLIBCXXABI_ENABLE_STATIC_UNWINDER=ON \
-		-DLIBCXXABI_ENABLE_THREADS=OFF \
-		-DLIBCXXABI_LIBCXX_PATH="${WORK}/llvm/projects/libcxx" \
-		-DLIBCXXABI_USE_COMPILER_RT=ON \
-		-DLIBCXXABI_USE_LLVM_UNWINDER=ON \
-		-DLIBUNWIND_ENABLE_SHARED=OFF \
-		-DLIBUNWIND_ENABLE_THREADS=OFF \
-		-DLIBUNWIND_USE_COMPILER_RT=ON \
-		-DLLVM_CONFIG_PATH="${SYSROOT}/bin/llvm-config" \
-		-DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-unknown-elf" \
-		-DLLVM_ENABLE_LIBCXX=ON \
-		-DLLVM_ENABLE_PIC=OFF \
-		-DLLVM_ENABLE_THREADS=OFF \
-		-DLLVM_INSTALL_BINUTILS_SYMLINKS=ON \
-		-DLLVM_TARGETS_TO_BUILD="X86" \
-		${WORK}/llvm > cmake_configure.log
-
-	#  -DCMAKE_ASM_COMPILER=nasm \
-	#  -DCMAKE_LINKER="${SYSROOT}/bin/ld.lld" \
-	#  -DCOMPILER_RT_ENABLE_LLD=ON \
-	#  -DLIBCXX_ENABLE_LLD=ON \
-	#  -DLIBCXX_ENABLE_STATIC_UNWINDER=ON \
-	#  -DLIBCXXABI_ENABLE_LLD=ON \
-	#  -DLIBUNWIND_ENABLE_LLD=ON \
-	#  -DLLVM_ENABLE_LLD=ON \
-	#  -DLLVM_ENABLE_PROJECTS="libcxx;libcxxabi;libunwind;compiler-rt" \
-	#  -DCOMPILER_RT_BAREMETAL_BUILD=ON \
-	#  -DLIBCXXABI_BAREMETAL=ON \
-
-	echo "Building LLVM..."
-	ninja && ninja install
-	ninja cxx cxxabi compiler-rt
-	ninja install-compiler-rt install-cxx install-cxxabi
-	popd
-}
-
-function build_libc() {
-	if [[ ! -d "${WORK}/poplibc" ]]; then
-		echo "Downloading poplibc..."
-		git clone \
-			"https://github.com/justinian/poplibc.git" \
-			"${WORK}/poplibc"
-	else
-		echo "Updating poplibc..."
-		git -C "${WORK}/poplibc" pull
-	fi
-
-	pushd "${WORK}/poplibc"
-	echo "Building poplibc..."
-	make install PREFIX="${SYSROOT}"
-	popd
-}
-
-function update_links() {
-	for exe in `ls "${SYSROOT}/bin/${TARGET}-"*`; do
-		base=$(echo "$exe" | sed -e "s/${TARGET}-//")
-		ln -fs "${exe}" "${base}"
-	done
-}
-
-build_nasm
-build_binutils
-build_libc
-build_llvm
-update_links
-
-export CC="${SYSROOT}/bin/clang"
-export CXX="${SYSROOT}/bin/clang++"
-export LD="${SYSROOT}/bin/ld.lld"
-build_libc

scripts/build_sysroot_gcc.sh

@@ -1,186 +0,0 @@
-#!/usr/bin/env bash
-
-TARGET="x86_64-elf"
-NASM_VERSION="2.14.02"
-GCC_VERSION="7.4.0"
-BINUTILS_VERSION="2.31.1"
-
-SYSROOT=$(realpath "$(dirname $0)/../sysroot")
-WORK=$(realpath "$(dirname $0)/sysroot")
-
-echo "Not currently supported"
-exit 1
-
-set -e
-mkdir -p "${SYSROOT}"
-mkdir -p "${WORK}"
-
-
-function build_nasm() {
-	if [[ ! -d "${WORK}/nasm-${NASM_VERSION}" ]]; then
-		echo "Downloading NASM..."
-		tarball="nasm-${NASM_VERSION}.tar.gz"
-		curl -sSOL "https://www.nasm.us/pub/nasm/releasebuilds/${NASM_VERSION}/${tarball}"
-		tar xzf "${tarball}" -C "${WORK}" && rm "${tarball}"
-	fi
-
-	mkdir -p "${WORK}/build/nasm"
-	pushd "${WORK}/build/nasm"
-
-	if [[ ! -f "${WORK}/build/nasm/config.cache" ]]; then
-		echo "Configuring NASM..."
-		"${WORK}/nasm-${NASM_VERSION}/configure" \
-			--quiet \
-			--config-cache \
-			--disable-werror \
-			--prefix="${SYSROOT}" \
-			--srcdir="${WORK}/nasm-${NASM_VERSION}"
-	fi
-
-	echo "Building NASM..."
-	(make -j && make install) > "${WORK}/build/nasm_build.log"
-	popd
-}
-
-function build_binutils() {
-	if [[ ! -d "${WORK}/binutils-${BINUTILS_VERSION}" ]]; then
-		echo "Downloading binutils..."
-		tarball="binutils-${BINUTILS_VERSION}.tar.gz"
-		curl -sSOL "https://ftp.gnu.org/gnu/binutils/${tarball}"
-		tar xzf "${tarball}" -C "${WORK}" && rm "${tarball}"
-	fi
-
-	mkdir -p "${WORK}/build/binutils"
-	pushd "${WORK}/build/binutils"
-
-	if [[ ! -f "${WORK}/build/binutils/config.cache" ]]; then
-		echo "Configuring binutils..."
-		"${WORK}/binutils-${BINUTILS_VERSION}/configure" \
-			--quiet \
-			--config-cache \
-			--target="${TARGET}" \
-			--prefix="${SYSROOT}" \
-			--with-sysroot="${SYSROOT}" \
-			--with-lib-path="${SYSROOT}/lib" \
-			--disable-nls \
-			--disable-werror
-	fi
-
-	echo "Building binutils..."
-	(make -j && make install) > "${WORK}/build/binutils_build.log"
-	popd
-}
-
-function build_gcc() {
-	if [[ ! -d "${WORK}/gcc-${GCC_VERSION}" ]]; then
-		echo "Downloading GCC..."
-		tarball="gcc-${GCC_VERSION}.tar.gz"
-		curl -sSOL "https://ftp.gnu.org/gnu/gcc/gcc-${GCC_VERSION}/${tarball}"
-		tar xzf "${tarball}" -C "${WORK}" && rm "${tarball}"
-
-		# no-red-zone support version of libgcc
-		echo "MULTILIB_OPTIONS += mno-red-zone" >  "${WORK}/gcc-${GCC_VERSION}/gcc/config/i386/t-${TARGET}"
-		echo "MULTILIB_DIRNAMES += no-red-zone" >> "${WORK}/gcc-${GCC_VERSION}/gcc/config/i386/t-${TARGET}"
-
-cat <<EOF >> "${WORK}/gcc-${GCC_VERSION}/gcc/config.gcc"
-case \${target} in
-	${TARGET})
-		tmake_file="\${tmake_file} i386/t-${TARGET}"
-		;;
-esac
-EOF
-	fi
-
-	mkdir -p "${WORK}/build/gcc"
-	pushd "${WORK}/build/gcc"
-
-	if [[ ! -f "${WORK}/build/gcc/config.cache" ]]; then
-		echo "Configuring GCC..."
-		"${WORK}/gcc-${GCC_VERSION}/configure" \
-			--quiet \
-			--config-cache \
-			--target="${TARGET}" \
-			--prefix="${SYSROOT}" \
-			--with-sysroot="${SYSROOT}" \
-			--with-native-system-header-dir="${SYSROOT}/include" \
-			--with-newlib \
-			--without-headers \
-			--disable-nls \
-			--enable-languages=c,c++ \
-			--disable-shared \
-			--disable-multilib \
-			--disable-decimal-float \
-			--disable-threads \
-			--disable-libatomic \
-			--disable-libgomp \
-			--disable-libmpx \
-			--disable-libquadmath \
-			--disable-libssp \
-			--disable-libvtv \
-			--disable-libstdcxx
-	fi
-
-	echo "Building GCC..."
-	(make -j all-gcc && make -j all-target-libgcc && \
-		make install-gcc && make install-target-libgcc) > "${WORK}/build/gcc_build.log"
-	popd
-}
-
-function build_libstdcxx() {
-	mkdir -p "${WORK}/build/libstdcxx"
-	pushd "${WORK}/build/libstdcxx"
-
-	if [[ ! -f "${WORK}/build/libstdcxx/config.cache" ]]; then
-		echo "Configuring libstdc++..."
-		CFLAGS="-I${SYSROOT}/include" \
-		CXXFLAGS="-I${SYSROOT}/include" \
-		"${WORK}/gcc-${GCC_VERSION}/libstdc++-v3/configure" \
-			--config-cache \
-			--host="${TARGET}" \
-			--target="${TARGET}" \
-			--prefix="${SYSROOT}" \
-			--disable-nls \
-			--disable-multilib \
-			--with-newlib \
-			--disable-libstdcxx-threads \
-			--disable-libstdcxx-pch \
-			--with-gxx-include-dir="${SYSROOT}/include/c++"
-	fi
-
-	echo "Building libstdc++..."
-	(make -j && make install) > "${WORK}/build/libstdcxx_build.log"
-	popd
-}
-
-function build_libc() {
-	if [[ ! -d "${WORK}/poplibc" ]]; then
-		echo "Downloading poplibc..."
-		git clone \
-			"https://github.com/justinian/poplibc.git" \
-			"${WORK}/poplibc"
-	else
-		echo "Updating poplibc..."
-		git -C "${WORK}/poplibc" pull
-	fi
-
-	pushd "${WORK}/poplibc"
-	echo "Building poplibc..."
-	make install PREFIX="${SYSROOT}"
-	popd
-}
-
-function update_links() {
-	for exe in `ls "${SYSROOT}/bin/${TARGET}-"*`; do
-		base=$(echo "$exe" | sed -e "s/${TARGET}-//")
-		ln -fs "${exe}" "${base}"
-	done
-}
-
-build_nasm
-build_binutils
-build_gcc
-
-update_links
-export PATH="${SYSROOT}/bin:${PATH}"
-build_libc
-build_libstdcxx

scripts/fontpsf.py

@@ -0,0 +1,75 @@
+_MAGIC = (0x72, 0xb5, 0x4a, 0x86)
+_VERSION = 0
+
+class PSF2:
+    from collections import namedtuple
+    Header = namedtuple("PSF2Header",
+        ["version", "offset", "flags", "count", "charsize", "height", "width"])
+
+    def __init__(self, filename, header, data):
+        self.__filename = filename
+        self.__header = header
+        self.__data = data
+
+    data = property(lambda self: self.__data)
+    header = property(lambda self: self.__header)
+    count = property(lambda self: self.__header.count)
+    charsize = property(lambda self: self.__header.charsize)
+    dimension = property(lambda self: (self.__header.width, self.__header.height))
+    filename = property(lambda self: self.__filename)
+
+    @classmethod
+    def load(cls, filename):
+        from os.path import basename
+        from struct import unpack_from
+
+        data = open(filename, 'rb').read()
+
+        fmt = "BBBBIIIIIII"
+        values = unpack_from(fmt, data)
+
+        if values[:len(_MAGIC)] != _MAGIC:
+            raise Exception("Bad magic number in header")
+
+        header = PSF2.Header(*values[len(_MAGIC):])
+        if header.version != _VERSION:
+            raise Exception(f"Bad version {header.version} in header")
+
+        return cls(basename(filename), header, data)
+
+    class Glyph:
+        __slots__ = ['index', 'data']
+        def __init__(self, i, data):
+            self.index = i
+            self.data = data
+        def __index__(self):
+            return self.index
+        def empty(self):
+            return not bool([b for b in self.data if b != 0])
+        def description(self):
+            c = chr(self.index)
+            if c.isprintable():
+                return "Glyph {:02x}: '{}'".format(self.index, c)
+            else:
+                return "Glyph {:02x}".format(self.index)
+
+    def __getitem__(self, i):
+        c = self.__header.charsize
+        n = i * c + self.__header.offset
+        return PSF2.Glyph(i, self.__data[n:n+c])
+
+    class __iter:
+        __slots__ = ['font', 'n']
+        def __init__(self, font):
+            self.font = font
+            self.n = 0
+        def __next__(self):
+            if self.n < self.font.count:
+                glyph = self.font[self.n]
+                self.n += 1
+                return glyph
+            else:
+                raise StopIteration
+
+    def __iter__(self):
+        return PSF2.__iter(self)

scripts/parse_font.py

@@ -1,21 +1,6 @@
 #!/usr/bin/env python3
 
-MAGIC = (0x72, 0xb5, 0x4a, 0x86)
-
-from collections import namedtuple
-PSF2 = namedtuple("PSF2", ["version", "offset", "flags", "count", "charsize", "height", "width"])
-
-def read_header(data):
-    from struct import unpack_from, calcsize
-
-    fmt = "BBBBIIIIIII"
-
-    values = unpack_from(fmt, data)
-    if values[:len(MAGIC)] != MAGIC:
-        raise Exception("Bad magic number in header")
-
-    return PSF2(*values[len(MAGIC):])
-
+from fontpsf import PSF2
 
 def print_glyph(header, data):
     bw = (header.width + 7) // 8
@@ -28,16 +13,15 @@ def print_glyph(header, data):
 
 
 def display_font(filename):
-    data = open(filename, 'rb').read()
+    font = PSF2.load(filename)
+    print(font.header)
 
-    header = read_header(data)
-    print(header)
-
-    c = header.charsize
-    for i in range(0, header.count):
-        n = i * c + header.offset
-        print("Glyph {}:".format(i))
-        print_glyph(header, data[n:n+c])
+    for glyph in font:
+        if glyph.empty():
+            print("{}: BLANK".format(glyph.description()))
+        else:
+            print("{}:".format(glyph.description()))
+            print_glyph(font.header, glyph.data)
 
 
 if __name__ == "__main__":

scripts/parse_syms.py

@@ -0,0 +1,10 @@
+#!/usr/bin/env python3
+
+def parse_elf(filename):
+    import struct
+    with open(filename, 'rb') as elf:
+
+if __name__ == "__main__":
+    import sys
+    for arg in sys.argv[1:]:
+        parse_elf(arg)

scripts/psf_to_cpp.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+
+from fontpsf import PSF2
+
+def print_header(filename):
+    font = PSF2.load(filename)
+
+    print("#pragma once")
+    print(f"// This file was autogenerated by psf_to_cpp.py from {font.filename}\n")
+
+    print(f"const uint8_t font_glyph_size = {font.charsize};")
+    print(f"const uint8_t font_glyph_width = {font.dimension[0]};")
+    print(f"const uint8_t font_glyph_height = {font.dimension[1]};")
+    print(f"const uint16_t font_glyph_count = {font.count};\n")
+
+    print('const uint8_t font_glyph_data[] = {')
+
+    for glyph in font:
+        print("    ", "".join([f"0x{b:02x}," for b in glyph.data]), end="")
+        print(" // {}".format(glyph.description()))
+
+    print("};")
+
+if __name__ == "__main__":
+    import sys
+    for filename in sys.argv[1:]:
+        print_header(filename)

scripts/readme_for_prebuilt_sysroots.md

@@ -0,0 +1,14 @@
+# jsix OS sysroot
+
+This is a pre-built sysroot for building the jsix operating system kernel,
+bootloader, and utilities. This package is provided as a convenience, and
+contains software from the following repositories.
+
+## The LLVM toolchain
+
+The LLVM sources as downloaded via git from [llvm.org][llvm] under the terms of
+the [Apache License v2.0][apache2], modified [as described here][llvmlic].
+
+[llvm]: https://llvm.org
+[apache2]: https://www.apache.org/licenses/LICENSE-2.0
+[llvmlic]: https://llvm.org/docs/DeveloperPolicy.html#new-llvm-project-license-framework

scripts/templates/build.ninja.j2

@@ -1,6 +1,11 @@
 ninja_required_version = 1.3
 builddir = {{ buildroot }}
 srcroot = {{ srcroot }}
+modulefile = {{ modulefile }}
+
+{%- for var, value in vars %}
+{{ var }} = {{ value }}
+{%- endfor %}
 
 warnflags = $
     -Wformat=2 $
@@ -23,42 +28,67 @@ warnflags = $
     -Wno-unused-result $
     -Wno-deprecated-declarations $
     -Wno-unused-function $
+    -Wno-address-of-packed-member $
     -Werror
 
 ccflags = $
     -I${srcroot}/src/include $
     -I${srcroot}/src/include/x86_64 $
-    -DVERSION_MAJOR={{ version.major }} $
-    -DVERSION_MINOR={{ version.minor }} $
-    -DVERSION_PATCH={{ version.patch }} $
-    -DVERSION_GITSHA=0x{% if version.dirty %}1{% else %}0{% endif %}{{ version.sha }} $
-    -DGIT_VERSION=\"{{ version.major }}.{{ version.minor }}.{{ version.patch }}-{{ version.sha }}\" $
-    -DGIT_VERSION_WIDE=L\"{{ version.major }}.{{ version.minor }}.{{ version.patch }}-{{ version.sha }}\" $
+    -fcolor-diagnostics $
+    -DVERSION_MAJOR={{ version_major }} $
+    -DVERSION_MINOR={{ version_minor }} $
+    -DVERSION_PATCH={{ version_patch }} $
+    -DVERSION_GITSHA=0x0{{ version_sha }} $
+    -DGIT_VERSION=\"{{ version }}\" $
+    -DGIT_VERSION_WIDE=L\"{{ version }}\" $
     $warnflags
 
 asflags = $
-    -DVERSION_MAJOR={{ version.major }} $
-    -DVERSION_MINOR={{ version.minor }} $
-    -DVERSION_PATCH={{ version.patch }} $
-    -DVERSION_GITSHA=0x{% if version.dirty %}1{% else %}0{% endif %}{{ version.sha }}
+    -DVERSION_MAJOR={{ version_major }} $
+    -DVERSION_MINOR={{ version_minor }} $
+    -DVERSION_PATCH={{ version_patch }} $
+    -DVERSION_GITSHA=0x{{ version_sha }} $
+    -I${srcroot}/src/include
 
 cflags = -std=c11
-cxxflags = -std=c++14
+cxxflags = -std=c++17
 libs =
 
-rule cc
+rule c
     deps = gcc
     depfile = $out.d
     description = Compiling $name
     command = $cc -MMD -MF $out.d $ccflags $cflags -o $out -c $in
 
-rule cxx
+rule dump_c_defs
+    description = Dumping C defines for $target
+    command = echo "" | $cc $ccflags $cflags -dM -E - > $out
+
+rule dump_c_run
+    description = Dumping C arguments for $target
+    command = $
+        echo "#!/bin/bash" > $out; $
+        echo '$cc $ccflags $cflags $$*' >> $out; $
+        chmod a+x $out
+
+rule cpp
     deps = gcc
     depfile = $out.d
     description = Compiling $name
     command = $cxx -MMD -MF $out.d $cxxflags $ccflags -o $out -c $in
 
-rule nasm
+rule dump_cpp_defs
+    description = Dumping C++ defines for $target
+    command = echo "" | $cxx -x c++ $cxxflags $ccflags -dM -E - > $out
+
+rule dump_cpp_run
+    description = Dumping C++ arguments for $target
+    command = $
+        echo "#!/bin/bash" > $out; $
+        echo '$cc $cxxflags $ccflags $$*' >> $out; $
+        chmod a+x $out
+
+rule s
     deps = gcc
     depfile = $out.d
     description = Assembling $name
@@ -75,15 +105,23 @@ rule lib
 rule regen
     generator = true
     description = Regenrating build files
-    command = {{ generator }} $builddir
+    command = $
+        {{ generator }} $
+        --file $modulefile $
+        --dir $builddir $
+        generate
 
 rule cp
     description = Copying $name
     command = cp $in $out
 
-rule makerd
-    description = Making init ramdisk
-    command = $builddir/native/makerd $in $out
+rule dump
+    description = Dumping decompiled $name
+    command = objdump -DSC -M intel $in > $out
+
+rule makest
+    description = Making symbol table
+    command = nm $in | ${srcroot}/scripts/build_symbol_table.py $out
 
 rule makeefi
     description = Converting $name
@@ -103,7 +141,15 @@ rule makefat
     description = Creating $name
     command = $
         cp $srcroot/assets/diskbase.img $out; $
-        mcopy -s -D o -i $out@@1024K $builddir/fatroot/* ::/
+        mcopy -s -D o -i $out@@1M $builddir/fatroot/* ::/
+
+rule strip
+    description = Stripping $name
+    command = $
+        cp $in $out; $
+        objcopy --only-keep-debug $out $out.debug; $
+        strip -g $out; $
+        objcopy --add-gnu-debuglink=$out.debug $out
 
 {% for target in targets %}
 subninja {{ target }}/target.ninja
@@ -117,26 +163,52 @@ build $
     {%- for template in templates %}
     {{ template }} $
     {%- endfor %}
+    $modulefile $
     {{ generator }}
 
-build $builddir/flash.img : cp $srcroot/assets/ovmf/x64/OVMF.fd
-    name = flash.img
+build $builddir/ovmf_vars.fd : cp $srcroot/assets/ovmf/x64/ovmf_vars.fd
+    name = ovmf_vars.fd
 
-build $builddir/fatroot/popcorn.elf : cp $builddir/host/popcorn.elf
+build $builddir/ovmf_vars_d.fd : cp $srcroot/assets/ovmf/x64/ovmf_vars_d.fd
+    name = ovmf_vars_d.fd
+
+build $builddir/jsix.elf | $builddir/jsix.elf.debug : strip $builddir/host/jsix.elf
+    name = kernel
+
+build $builddir/jsix.dump : dump $builddir/host/jsix.elf
+    name = kernel
+
+build $builddir/jsix.elf-gdb.py : cp ${srcroot}/assets/debugging/jsix.elf-gdb.py
+    name = kernel debug python scripts
+
+build $builddir/fatroot/jsix.elf : cp $builddir/jsix.elf
     name = kernel to FAT image
 
 build $builddir/fatroot/efi/boot/bootx64.efi : cp $builddir/boot/boot.efi
     name = bootloader to FAT image
 
-build $builddir/fatroot/initrd.img : makerd ${srcroot}/assets/initrd.toml | $
-    ${builddir}/native/makerd $
-    ${builddir}/host/nulldrv
+build $builddir/fatroot/nulldrv.elf : cp $builddir/user/nulldrv.elf
+    name = null driver to FAT image
 
-build $builddir/popcorn.img : makefat | $
-    $builddir/fatroot/initrd.img $
-    $builddir/fatroot/popcorn.elf $
+build $builddir/fatroot/fb.elf : cp $builddir/user/fb.elf
+    name = fb driver to FAT image
+
+build ${builddir}/fatroot/symbol_table.dat : makest ${builddir}/jsix.elf
+
+build $builddir/jsix.img : makefat | $
+    $builddir/fatroot/symbol_table.dat $
+    $builddir/fatroot/nulldrv.elf $
+    $builddir/fatroot/fb.elf $
+    $builddir/fatroot/jsix.elf $
     $builddir/fatroot/efi/boot/bootx64.efi
-    name = popcorn.img
+    name = jsix.img
 
-# vim: et ts=4 sts=4 sw=4
+default $
+    $builddir/ovmf_vars.fd $
+    $builddir/ovmf_vars_d.fd $
+    $builddir/jsix.dump $
+    $builddir/jsix.elf-gdb.py $
+    $builddir/jsix.img
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
 

scripts/templates/exe.boot.j2

@@ -0,0 +1,14 @@
+{% extends "exe.default.j2" %}
+{% block variables %}
+{{ super() }}
+
+ccflags = $ccflags $
+    -g3 $
+    -DKERNEL_FILENAME=L\"jsix.elf\" $
+    -I${srcroot}/external/include $
+    -I${srcroot}/external/include/X64
+
+{% endblock %}
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/exe.default.j2

@@ -0,0 +1,8 @@
+{% extends "module.base.j2" %}
+{% block variables %}
+{{ super() }}
+
+{% endblock %}
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/exe.kernel.j2

@@ -1,9 +1,13 @@
-{% extends "program.default.ninja.j2" %}
+{% extends "exe.default.j2" %}
 {% block variables %}
 {{ super() }}
 
 asflags = $asflags -I${srcroot}/src/kernel/
 libs = $libs
 ldflags = $ldflags -T ${srcroot}/src/arch/x86_64/kernel.ld
+ccflags = $ccflags -I${srcroot}/external
 
 {% endblock %}
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/exe.makerd.j2

@@ -0,0 +1,10 @@
+{% extends "exe.default.j2" %}
+{% block variables %}
+{{ super() }}
+
+ccflags = $ccflags -I${srcroot}/external/cpptoml
+
+{% endblock %}
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/exe.tests.j2

@@ -0,0 +1,10 @@
+{% extends "exe.default.j2" %}
+{% block variables %}
+{{ super() }}
+
+ccflags = $ccflags -ggdb -I${srcroot}/external/catch
+
+{% endblock %}
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/lib.default.j2

@@ -0,0 +1,4 @@
+{% extends "module.base.j2" %}
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/library.default.ninja.j2

@@ -1 +0,0 @@
-{% extends "module.base.ninja.j2" %}

scripts/templates/module.base.j2

@@ -0,0 +1,45 @@
+moddir = ${builddir}/{{ name }}.dir
+
+{% block variables %}
+ccflags = $ccflags $
+    {%- for dep in depmods %}
+    {%- for inc in dep.includes %}
+    -I${srcroot}/{{ inc }} $
+    {%- endfor %}
+    {%- endfor %}
+    {%- for inc in module.includes %}
+    -I${srcroot}/{{ inc }} $
+    {%- endfor %}
+    {%- for define in module.defines %}
+    -D{{ define }} $
+    {%- endfor %}
+{% endblock %}
+
+{% for source in module.source %}
+build ${moddir}/{{ source.output }} : {{ source.action }} ${srcroot}/{{ source.input }} || {{ buildfile }}
+    name = {{ source.name }}
+{% endfor %}
+
+build ${builddir}/{{ module.output }} : {{ module.kind }} $
+{%- for source in module.source %}
+    ${moddir}/{{ source.output }} $
+{%- endfor -%}
+{%- for dep in deplibs %}
+    ${builddir}/{{ dep.output }} $
+{%- endfor %}
+    | $
+{%- for dep in depexes %}
+    ${builddir}/{{ dep.output }} $
+{%- endfor %}
+    {{ buildfile }}
+    name = {{ name }}
+
+{% if module.default %}
+default ${builddir}/{{ module.output }}
+{% endif %}
+
+{% block extra %}
+{% endblock %}
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/module.base.ninja.j2

@@ -1,29 +0,0 @@
-moddir = ${builddir}/{{ name }}.dir
-
-{% block variables %}
-ccflags = $ccflags $
-    {%- for dep in module.deps %}
-    -I${srcroot}/src/libraries/{{ dep }}/include $
-    {%- endfor %}
-    -I${srcroot}/{{ module.path }} $
-    -I${srcroot}/{{ module.path }}/include
-{% endblock %}
-
-{% for source in sources %}
-build ${moddir}/{{ source.output }} : {{ source.action }} {{ source.input }} || {{ buildfile }}
-    name = {{ source.name }}
-{% endfor %}
-
-build {% block artifact %} ${builddir}/lib{{ name }}.a : lib {% endblock %} $
-{%- block extrasources %}{% endblock -%}
-{%- for source in sources %}
-    ${moddir}/{{ source.output }}{% if not loop.last %} ${% endif %}
-{%- endfor -%}
-{%- if module.deps %}| {% for dep in module.deps %} ${builddir}/lib{{ dep }}.a {% endfor %}{% endif %}
-    name = {{ name }}
-
-{% block extra %}
-{% endblock %}
-
-# vim: ft=ninja et ts=4 sts=4 sw=4
-

scripts/templates/program.boot.ninja.j2

@@ -1,29 +0,0 @@
-{% extends "program.default.ninja.j2" %}
-{% block variables %}
-{{ super() }}
-
-ld = ld
-cc = clang
-cxx = clang++
-
-ccflags = $ccflags $
-    -DKERNEL_FILENAME=L\"popcorn.elf\" $
-    -DGNU_EFI_USE_MS_ABI $
-    -DHAVE_USE_MS_ABI $
-    -DEFI_DEBUG=0 $
-    -DEFI_DEBUG_CLEAR_MEMORY=0 $
-    -fPIC $
-    -fshort-wchar
-
-ldflags = $ldflags $
-    -T ${srcroot}/src/arch/x86_64/boot.ld $
-    -shared
-
-{% endblock %}
-
-{% block extra %}
-
-build $builddir/boot.efi : makeefi ${builddir}/{{ module.output }}
-    name = boot.efi
-
-{% endblock %}

scripts/templates/program.default.ninja.j2

@@ -1,13 +0,0 @@
-{% extends "module.base.ninja.j2" %}
-{% block variables %}
-{{ super() }}
-
-libs = $
-    -L${builddir} $
-    {%- for dep in module.deps %}
-    -l{{dep}} $
-    {%- endfor %}
-    $libs
-
-{% endblock %}
-{% block artifact %}${builddir}/{{ module.output }} : exe{% endblock %}

scripts/templates/target.boot.j2

@@ -0,0 +1,38 @@
+{% extends "target.default.j2" %}
+
+{% block binaries %}
+cc = clang
+cxx = clang++
+ld = clang++
+ar = ar
+nasm = nasm
+objcopy = objcopy
+{% endblock %}
+
+{% block variables %}
+
+ccflags = $ccflags $
+    -I $srcroot/external $
+    --target=x86_64-unknown-windows $
+	-ffreestanding $
+	-mno-red-zone $
+	-fshort-wchar $
+	-fno-omit-frame-pointer $
+	-ggdb
+
+cxxflags = $cxxflags $
+    -fno-rtti $
+    -fno-exceptions
+
+ldflags = $ldflags $
+    --target=x86_64-unknown-windows $
+	-nostdlib $
+    -Wl,-entry:efi_main $
+    -Wl,-subsystem:efi_application $
+    -fuse-ld=lld-link $
+	-g
+
+{% endblock %}
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/target.boot.ninja.j2

@@ -1,35 +0,0 @@
-{% extends "target.default.ninja.j2" %}
-
-{% block binaries %}
-ld = ld
-cc = clang
-cxx = clang++
-nasm = nasm
-{% endblock %}
-
-{% block variables %}
-
-ccflags = $ccflags $
-    -ggdb $
-    -nostdlib $
-    -ffreestanding $
-    -nodefaultlibs $
-    -fno-builtin $
-    -mno-sse $
-    -fno-omit-frame-pointer $
-    -mno-red-zone
-
-cxxflags = $cxxflags $
-    -nostdlibinc $
-    -isystem${srcroot}/sysroot/include/c++/v1 $
-    -fno-exceptions $
-    -fno-rtti
-
-ldflags = $ldflags $
-    -g $
-    -nostdlib $
-    -znocombreloc $
-	-Bsymbolic $
-    -nostartfiles
-
-{% endblock %}

scripts/templates/target.default.j2

@@ -0,0 +1,31 @@
+builddir = $builddir/{{ target }}
+target = {{ target }}
+
+{% block variables %}
+{% endblock %}
+
+{% block binaries %}
+cc = clang
+cxx = clang++
+ld = ld
+ar = ar
+nasm = nasm
+objcopy = objcopy
+{% endblock %}
+
+{% for module in modules %}
+subninja {{ module }}.ninja
+{% endfor %}
+
+build ${builddir}/c.defs : dump_c_defs | {{ buildfile }}
+build ${builddir}/cpp.defs : dump_cpp_defs | {{ buildfile }}
+build ${builddir}/c.run : dump_c_run | {{ buildfile }}
+build ${builddir}/cpp.run : dump_cpp_run | {{ buildfile }}
+
+default ${builddir}/c.defs
+default ${builddir}/cpp.defs
+default ${builddir}/c.run
+default ${builddir}/cpp.run
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/target.default.ninja.j2

@@ -1,17 +0,0 @@
-builddir = $builddir/{{ target }}
-
-{% block variables %}
-{% endblock %}
-
-{% block binaries %}
-cc = clang
-cxx = clang++
-ld = clang++
-ar = ar
-nasm = nasm
-objcopy = objcopy
-{% endblock %}
-
-{% for module in modules %}
-subninja {{ module }}.ninja
-{% endfor %}

scripts/templates/target.host.j2

@@ -1,11 +1,12 @@
-{% extends "target.default.ninja.j2" %}
+{% extends "target.default.j2" %}
+
 {% block binaries %}
 cc = ${srcroot}/sysroot/bin/clang
 cxx = ${srcroot}/sysroot/bin/clang++
-ld = ${srcroot}/sysroot/bin/x86_64-elf-ld
-ar = ${srcroot}/sysroot/bin/x86_64-elf-ar
-nasm = ${srcroot}/sysroot/bin/nasm
-objcopy = ${srcroot}/sysroot/bin/x86_64-elf-objcopy
+ld = ${srcroot}/sysroot/bin/ld.lld
+ar = ${srcroot}/sysroot/bin/ar
+nasm = nasm
+objcopy = ${srcroot}/sysroot/bin/objcopy
 {% endblock %}
 
 {% block variables %}
@@ -21,8 +22,9 @@ ccflags = $ccflags $
     -g $
     -mcmodel=large $
     -D__ELF__ $
-    -D__POPCORN__ $
+    -D__JSIX__ $
     -isystem${srcroot}/sysroot/include $
+    -isystem${srcroot}/src/libraries/libc/include $
     --sysroot="${srcroot}/sysroot"
 
 cxxflags = $cxxflags $
@@ -33,10 +35,10 @@ cxxflags = $cxxflags $
 ldflags = $ldflags $
     -g $
     -nostdlib $
-    -znocombreloc $
     -Bsymbolic $
-    -nostartfiles $
     -Bstatic
 
 {% endblock %}
-# vim: et ts=4 sts=4 sw=4
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/target.native.j2

@@ -0,0 +1,15 @@
+{% extends "target.default.j2" %}
+
+{% block binaries %}
+{{ super() }}
+ld = clang++
+{% endblock %}
+
+{% block variables %}
+
+ccflags = $ccflags -g -ggdb
+
+{% endblock %}
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

scripts/templates/target.native.ninja.j2

@@ -1 +0,0 @@
-{% extends "target.default.ninja.j2" %}

scripts/templates/target.user.j2

@@ -0,0 +1,45 @@
+{% extends "target.default.j2" %}
+
+{% block binaries %}
+cc = ${srcroot}/sysroot/bin/clang
+cxx = ${srcroot}/sysroot/bin/clang++
+ld = ${srcroot}/sysroot/bin/ld.lld
+ar = ${srcroot}/sysroot/bin/ar
+nasm = nasm
+objcopy = ${srcroot}/sysroot/bin/objcopy
+{% endblock %}
+
+{% block variables %}
+
+ccflags = $ccflags $
+    -nostdlib $
+    -nodefaultlibs $
+    -fno-builtin $
+    -mno-sse $
+    -fno-omit-frame-pointer $
+    -mno-red-zone $
+    -g $
+    -mcmodel=large $
+    -D__ELF__ $
+    -D__JSIX__ $
+    -isystem${srcroot}/sysroot/include $
+    -isystem${srcroot}/src/libraries/libc/include $
+    --sysroot="${srcroot}/sysroot"
+
+cxxflags = $cxxflags $
+    -fno-exceptions $
+    -fno-rtti $
+    -isystem${srcroot}/sysroot/include/c++/v1
+
+ldflags = $ldflags $
+    -g $
+    -nostdlib $
+    -Bsymbolic $
+    -Bstatic $
+    --sysroot="${srcroot}/sysroot" $
+	-L "${srcroot}/sysroot/lib" $
+
+{% endblock %}
+
+# vim: ft=ninja et ts=4 sts=4 sw=4
+

src/arch/x86_64/boot.ld

@@ -1,79 +0,0 @@
-/* Linker script originally from GNU-EFI project
- * https://sourceforge.net/p/gnu-efi/
- */
-
-OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
-OUTPUT_ARCH(i386:x86-64)
-ENTRY(_start)
-SECTIONS
-{
-  . = 0;
-  ImageBase = .;
-  /* .hash and/or .gnu.hash MUST come first! */
-  .hash : { *(.hash) }
-  .gnu.hash : { *(.gnu.hash) }
-  . = ALIGN(4096);
-  .eh_frame : 
-  { 
-    *(.eh_frame)
-  }
-  . = ALIGN(4096);
-  .text :
-  {
-   _text = .;
-   *(.text)
-   *(.text.*)
-   *(.gnu.linkonce.t.*)
-   . = ALIGN(16);
-  }
-  _etext = .;
-  _text_size = . - _text;
-  . = ALIGN(4096);
-  .reloc :
-  {
-   *(.reloc)
-  }
-  . = ALIGN(4096);
-  .data :
-  {
-   _data = .;
-   *(.rodata*)
-   *(.got.plt)
-   *(.got)
-   *(.data*)
-   *(.sdata)
-   /* the EFI loader doesn't seem to like a .bss section, so we stick
-      it all into .data: */
-   *(.sbss)
-   *(.scommon)
-   *(.dynbss)
-   *(.bss)
-   *(COMMON)
-   *(.rel.local)
-  }
-  .note.gnu.build-id : { *(.note.gnu.build-id) }
-
-  _edata = .;
-  _data_size = . - _etext;
-  . = ALIGN(4096);
-  .dynamic  : { *(.dynamic) }
-  . = ALIGN(4096);
-  .rela :
-  {
-    *(.rela.data*)
-    *(.rela.got)
-    *(.rela.stab)
-  }
-  . = ALIGN(4096);
-  .dynsym   : { *(.dynsym) }
-  . = ALIGN(4096);
-  .dynstr   : { *(.dynstr) }
-  . = ALIGN(4096);
-  .ignored.reloc :
-  {
-    *(.rela.reloc)
-    *(.eh_frame)
-    *(.note.GNU-stack)
-  }
-  .comment 0 : { *(.comment) }
-}

src/arch/x86_64/kernel.ld

@@ -1,8 +1,7 @@
-ENTRY(_start)
+ENTRY(_kernel_start)
 SECTIONS
 {
-	OFFSET = 0xFFFFFF0000000000;
-	. = OFFSET + 0x100000;
+	. = 0xFFFF800000000000;
 
 	.header : {
 		__header_start = .;
@@ -10,29 +9,32 @@ SECTIONS
 		__header_end = .;
 	}
 
-	.text : {
+	.text ALIGN(4096) : {
 		*(.text)
+		*(.isrs)
 	}
 
-	.data : {
+	.data ALIGN(4096) : {
 		 *(.data)
 		 *(.rodata)
 	}
 
-	.isrs : {
-		*(.isrs)
+	.ctors : ALIGN(8) {
+		 __ctors = .;
+		 KEEP(*(.ctors))
+		 __ctors_end = .;
+	 }
+
+	.bss ALIGN(4096) : {
+		__bss_start = .;
+		*(.bss)
+		__bss_end = .;
 	}
 
 	.note : {
 		*(.note.*)
 	}
 
-	.bss ALIGN(16) : {
-		__bss_start = .;
-		*(.bss)
-		__bss_end = .;
-	}
-
 	.eh_frame : {
 		__eh_frame_start = .;
 		KEEP(*(.eh_frame))

src/boot/console.c

@@ -1,307 +0,0 @@
-#include <stdarg.h>
-#include <stddef.h>
-#include <stdint.h>
-
-#include "console.h"
-#include "guids.h"
-#include "utility.h"
-
-size_t ROWS = 0;
-size_t COLS = 0;
-
-static EFI_SIMPLE_TEXT_OUT_PROTOCOL *con_out = 0;
-
-const CHAR16 digits[] = {u'0', u'1', u'2', u'3', u'4', u'5', u'6', u'7', u'8', u'9', u'a', u'b', u'c', u'd', u'e', u'f'};
-
-EFI_STATUS
-con_pick_mode(EFI_BOOT_SERVICES *bootsvc)
-{
-	EFI_STATUS status;
-	EFI_GRAPHICS_OUTPUT_PROTOCOL *gfx_out_proto;
-	status = bootsvc->LocateProtocol(&guid_gfx_out, NULL, (void **)&gfx_out_proto);
-	CHECK_EFI_STATUS_OR_RETURN(status, "LocateProtocol gfx");
-
-	const uint32_t modes = gfx_out_proto->Mode->MaxMode;
-	uint32_t best = gfx_out_proto->Mode->Mode;
-
-	EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info =
-		(EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *)gfx_out_proto->Mode;
-
-	uint32_t res = info->HorizontalResolution * info->VerticalResolution;
-	int is_fb = info->PixelFormat != PixelBltOnly;
-
-	for (uint32_t i = 0; i < modes; ++i) {
-		size_t size = 0;
-		status = gfx_out_proto->QueryMode(gfx_out_proto, i, &size, &info);
-		CHECK_EFI_STATUS_OR_RETURN(status, "QueryMode");
-
-#ifdef MAX_HRES
-		if (info->HorizontalResolution > MAX_HRES) continue;
-#endif
-
-		const uint32_t new_res = info->HorizontalResolution * info->VerticalResolution;
-		const int new_is_fb = info->PixelFormat == PixelBltOnly;
-
-		if (new_is_fb > is_fb && new_res >= res) {
-			best = i;
-			res = new_res;
-		}
-	}
-
-	status = gfx_out_proto->SetMode(gfx_out_proto, best);
-	CHECK_EFI_STATUS_OR_RETURN(status, "SetMode %d/%d", best, modes);
-	return EFI_SUCCESS;
-}
-
-EFI_STATUS
-con_initialize(EFI_SYSTEM_TABLE *system_table, const CHAR16 *version)
-{
-	EFI_STATUS status;
-
-	EFI_BOOT_SERVICES *bootsvc = system_table->BootServices;
-	con_out = system_table->ConOut;
-
-	// Might not find a video device at all, so ignore not found errors
-	status = con_pick_mode(bootsvc);
-	if (status != EFI_NOT_FOUND)
-		CHECK_EFI_STATUS_OR_RETURN(status, "con_pick_mode");
-
-	status = con_out->QueryMode(con_out, con_out->Mode->Mode, &COLS, &ROWS);
-	CHECK_EFI_STATUS_OR_RETURN(status, "QueryMode");
-
-	status = con_out->ClearScreen(con_out);
-	CHECK_EFI_STATUS_OR_RETURN(status, "ClearScreen");
-
-	con_out->SetAttribute(con_out, EFI_LIGHTCYAN);
-	con_out->OutputString(con_out, (CHAR16 *)L"Popcorn loader ");
-
-	con_out->SetAttribute(con_out, EFI_LIGHTMAGENTA);
-	con_out->OutputString(con_out, (CHAR16 *)version);
-
-	con_out->SetAttribute(con_out, EFI_LIGHTGRAY);
-	con_out->OutputString(con_out, (CHAR16 *)L" booting...\r\n\n");
-
-	return status;
-}
-
-size_t
-con_print_hex(uint32_t n)
-{
-	CHAR16 buffer[9];
-	CHAR16 *p = buffer;
-	for (int i = 7; i >= 0; --i) {
-		uint8_t nibble = (n & (0xf << (i*4))) >> (i*4);
-		*p++ = digits[nibble];
-	}
-	*p = 0;
-	con_out->OutputString(con_out, buffer);
-	return 8;
-}
-
-size_t
-con_print_long_hex(uint64_t n)
-{
-	CHAR16 buffer[17];
-	CHAR16 *p = buffer;
-	for (int i = 15; i >= 0; --i) {
-		uint8_t nibble = (n & (0xf << (i*4))) >> (i*4);
-		*p++ = digits[nibble];
-	}
-	*p = 0;
-	con_out->OutputString(con_out, buffer);
-	return 16;
-}
-
-size_t
-con_print_dec(uint32_t n)
-{
-	CHAR16 buffer[11];
-	CHAR16 *p = buffer + 10;
-	*p-- = 0;
-	do {
-		*p-- = digits[n % 10];
-		n /= 10;
-	} while (n != 0);
-
-	con_out->OutputString(con_out, ++p);
-	return 10 - (p - buffer);
-}
-
-size_t
-con_print_long_dec(uint64_t n)
-{
-	CHAR16 buffer[21];
-	CHAR16 *p = buffer + 20;
-	*p-- = 0;
-	do {
-		*p-- = digits[n % 10];
-		n /= 10;
-	} while (n != 0);
-
-	con_out->OutputString(con_out, ++p);
-	return 20 - (p - buffer);
-}
-
-size_t
-con_printf(const CHAR16 *fmt, ...)
-{
-	CHAR16 buffer[256];
-	const CHAR16 *r = fmt;
-	CHAR16 *w = buffer;
-	va_list args;
-	size_t count = 0;
-
-	va_start(args, fmt);
-
-	while (r && *r) {
-		if (*r != L'%') {
-			count++;
-			*w++ = *r++;
-			continue;
-		}
-
-		*w = 0;
-		con_out->OutputString(con_out, buffer);
-		w = buffer;
-
-		r++; // chomp the %
-
-		switch (*r++) {
-			case L'%':
-				con_out->OutputString(con_out, L"%");
-				count++;
-				break;
-
-			case L'x':
-				count += con_print_hex(va_arg(args, uint32_t));
-				break;
-
-			case L'd':
-			case L'u':
-				count += con_print_dec(va_arg(args, uint32_t));
-				break;
-
-			case L's':
-				{
-					CHAR16 *s = va_arg(args, CHAR16*);
-					count += wstrlen(s);
-					con_out->OutputString(con_out, s);
-				}
-				break;
-
-			case L'l':
-				switch (*r++) {
-					case L'x':
-						count += con_print_long_hex(va_arg(args, uint64_t));
-						break;
-
-					case L'd':
-					case L'u':
-						count += con_print_long_dec(va_arg(args, uint64_t));
-						break;
-
-					default:
-						break;
-				}
-				break;
-
-			default:
-				break;
-		}
-	}
-
-	*w = 0;
-	con_out->OutputString(con_out, buffer);
-
-	va_end(args);
-	return count;
-}
-
-void
-con_status_begin(const CHAR16 *message)
-{
-	con_out->SetAttribute(con_out, EFI_LIGHTGRAY);
-	con_out->OutputString(con_out, (CHAR16 *)message);
-}
-
-void
-con_status_ok()
-{
-	con_out->SetAttribute(con_out, EFI_LIGHTGRAY);
-	con_out->OutputString(con_out, (CHAR16 *)L"[");
-	con_out->SetAttribute(con_out, EFI_GREEN);
-	con_out->OutputString(con_out, (CHAR16 *)L"  ok  ");
-	con_out->SetAttribute(con_out, EFI_LIGHTGRAY);
-	con_out->OutputString(con_out, (CHAR16 *)L"]\r\n");
-}
-
-void
-con_status_fail(const CHAR16 *error)
-{
-	con_out->SetAttribute(con_out, EFI_LIGHTGRAY);
-	con_out->OutputString(con_out, (CHAR16 *)L"[");
-	con_out->SetAttribute(con_out, EFI_LIGHTRED);
-	con_out->OutputString(con_out, (CHAR16 *)L"failed");
-	con_out->SetAttribute(con_out, EFI_LIGHTGRAY);
-	con_out->OutputString(con_out, (CHAR16 *)L"]\r\n");
-
-	con_out->SetAttribute(con_out, EFI_RED);
-	con_out->OutputString(con_out, (CHAR16 *)error);
-	con_out->SetAttribute(con_out, EFI_LIGHTGRAY);
-	con_out->OutputString(con_out, (CHAR16 *)L"\r\n");
-}
-
-EFI_STATUS
-con_get_framebuffer(
-	EFI_BOOT_SERVICES *bootsvc,
-	void **buffer,
-	size_t *buffer_size,
-	uint32_t *hres,
-	uint32_t *vres,
-	uint32_t *rmask,
-	uint32_t *gmask,
-	uint32_t *bmask)
-{
-	EFI_STATUS status;
-
-	EFI_GRAPHICS_OUTPUT_PROTOCOL *gop;
-	status = bootsvc->LocateProtocol(&guid_gfx_out, NULL, (void **)&gop);
-	if (status != EFI_NOT_FOUND) {
-		CHECK_EFI_STATUS_OR_RETURN(status, "LocateProtocol gfx");
-
-		*buffer = (void *)gop->Mode->FrameBufferBase;
-		*buffer_size = gop->Mode->FrameBufferSize;
-		*hres = gop->Mode->Info->HorizontalResolution;
-		*vres = gop->Mode->Info->VerticalResolution;
-
-		switch (gop->Mode->Info->PixelFormat) {
-			case PixelRedGreenBlueReserved8BitPerColor:
-				*rmask = 0x0000ff;
-				*gmask = 0x00ff00;
-				*bmask = 0xff0000;
-				return EFI_SUCCESS;
-
-			case PixelBlueGreenRedReserved8BitPerColor:
-				*bmask = 0x0000ff;
-				*gmask = 0x00ff00;
-				*rmask = 0xff0000;
-				return EFI_SUCCESS;
-
-			case PixelBitMask:
-				*rmask = gop->Mode->Info->PixelInformation.RedMask;
-				*gmask = gop->Mode->Info->PixelInformation.GreenMask;
-				*bmask = gop->Mode->Info->PixelInformation.BlueMask;
-				return EFI_SUCCESS;
-
-			default:
-				// Not a framebuffer, fall through to zeroing out
-				// values below.
-				break;
-		}
-	}
-
-	*buffer = NULL;
-	*buffer_size = *hres = *vres = 0;
-	*rmask = *gmask = *bmask = 0;
-	return EFI_SUCCESS;
-}

src/boot/console.cpp

@@ -0,0 +1,304 @@
+#include <stddef.h>
+#include <stdint.h>
+
+#include <uefi/types.h>
+#include <uefi/graphics.h>
+#include <uefi/protos/graphics_output.h>
+
+#include "console.h"
+#include "error.h"
+
+#ifndef GIT_VERSION_WIDE
+#define GIT_VERSION_WIDE L"no version"
+#endif
+
+namespace boot {
+
+size_t ROWS = 0;
+size_t COLS = 0;
+
+console *console::s_console = nullptr;
+
+static const wchar_t digits[] = {u'0', u'1', u'2', u'3', u'4', u'5',
+	u'6', u'7', u'8', u'9', u'a', u'b', u'c', u'd', u'e', u'f'};
+
+
+static size_t
+wstrlen(const wchar_t *s)
+{
+	size_t count = 0;
+	while (s && *s++) count++;
+	return count;
+}
+
+
+console::console(uefi::boot_services *bs, uefi::protos::simple_text_output *out) :
+	m_rows {0},
+	m_cols {0},
+	m_out {out},
+	m_fb {0, 0}
+{
+	pick_mode(bs);
+
+	try_or_raise(
+		m_out->query_mode(m_out->mode->mode, &m_cols, &m_rows),
+		L"Failed to get text output mode.");
+
+	try_or_raise(
+		m_out->clear_screen(),
+		L"Failed to clear screen");
+
+	m_out->set_attribute(uefi::attribute::light_cyan);
+	m_out->output_string(L"jsix loader ");
+
+	m_out->set_attribute(uefi::attribute::light_magenta);
+	m_out->output_string(GIT_VERSION_WIDE);
+
+	m_out->set_attribute(uefi::attribute::light_gray);
+	m_out->output_string(L" booting...\r\n\n");
+
+	if (m_fb.type != kernel::args::fb_type::none) {
+		wchar_t const * type = nullptr;
+		switch (m_fb.type) {
+		case kernel::args::fb_type::rgb8:
+			type = L"rgb8";
+			break;
+		case kernel::args::fb_type::bgr8:
+			type = L"bgr8";
+			break;
+		default:
+			type = L"unknown";
+		}
+
+		printf(L"Found framebuffer: %dx%d[%d] type %s @0x%x\r\n",
+			m_fb.horizontal, m_fb.vertical, m_fb.scanline, type, m_fb.phys_addr);
+	} else {
+		printf(L"No framebuffer found.\r\n");
+	}
+
+	s_console = this;
+}
+
+void
+console::pick_mode(uefi::boot_services *bs)
+{
+	uefi::status status;
+	uefi::protos::graphics_output *gfx_out_proto;
+	uefi::guid guid = uefi::protos::graphics_output::guid;
+
+	m_fb.type = kernel::args::fb_type::none;
+
+	uefi::status has_gop = bs->locate_protocol(&guid, nullptr,
+		(void **)&gfx_out_proto);
+
+	if (has_gop != uefi::status::success)
+		// No video output found, skip it
+		return;
+
+	const uint32_t modes = gfx_out_proto->mode->max_mode;
+	uint32_t best = gfx_out_proto->mode->mode;
+
+	uefi::graphics_output_mode_info *info =
+		(uefi::graphics_output_mode_info *)gfx_out_proto->mode;
+
+	uint32_t res = info->horizontal_resolution * info->vertical_resolution;
+	int pixmode = static_cast<int>(info->pixel_format);
+
+	for (uint32_t i = 0; i < modes; ++i) {
+		size_t size = 0;
+
+		try_or_raise(
+			gfx_out_proto->query_mode(i, &size, &info),
+			L"Failed to find a graphics mode the driver claimed to support");
+
+#ifdef MAX_HRES
+		if (info->horizontal_resolution > MAX_HRES) continue;
+#endif
+
+		const uint32_t new_res = info->horizontal_resolution * info->vertical_resolution;
+		int new_pixmode = static_cast<int>(info->pixel_format);
+
+		if (new_pixmode <= pixmode && new_res >= res) {
+			best = i;
+			res = new_res;
+			pixmode = new_pixmode;
+		}
+	}
+
+	try_or_raise(
+		gfx_out_proto->set_mode(best),
+		L"Failed to set graphics mode");
+
+	if (pixmode <= static_cast<int>(uefi::pixel_format::bgr8)) {
+		m_fb.phys_addr = gfx_out_proto->mode->frame_buffer_base;
+		m_fb.size = gfx_out_proto->mode->frame_buffer_size;
+		m_fb.vertical = gfx_out_proto->mode->info->vertical_resolution;
+		m_fb.horizontal = gfx_out_proto->mode->info->horizontal_resolution;
+		m_fb.scanline = gfx_out_proto->mode->info->pixels_per_scanline;
+
+		switch (gfx_out_proto->mode->info->pixel_format) {
+		case uefi::pixel_format::rgb8:
+			m_fb.type = kernel::args::fb_type::rgb8;
+			break;
+		case uefi::pixel_format::bgr8:
+			m_fb.type = kernel::args::fb_type::bgr8;
+			break;
+		default:
+			m_fb.type = kernel::args::fb_type::none;
+		}
+	}
+}
+
+size_t
+console::print_hex(uint32_t n) const
+{
+	wchar_t buffer[9];
+	wchar_t *p = buffer;
+	for (int i = 7; i >= 0; --i) {
+		uint8_t nibble = (n >> (i*4)) & 0xf;
+		*p++ = digits[nibble];
+	}
+	*p = 0;
+	m_out->output_string(buffer);
+	return 8;
+}
+
+size_t
+console::print_long_hex(uint64_t n) const
+{
+	wchar_t buffer[17];
+	wchar_t *p = buffer;
+	for (int i = 15; i >= 0; --i) {
+		uint8_t nibble = (n >> (i*4)) & 0xf;
+		*p++ = digits[nibble];
+	}
+	*p = 0;
+	m_out->output_string(buffer);
+	return 16;
+}
+
+size_t
+console::print_dec(uint32_t n) const
+{
+	wchar_t buffer[11];
+	wchar_t *p = buffer + 10;
+	*p-- = 0;
+	do {
+		*p-- = digits[n % 10];
+		n /= 10;
+	} while (n != 0);
+
+	m_out->output_string(++p);
+	return 10 - (p - buffer);
+}
+
+size_t
+console::print_long_dec(uint64_t n) const
+{
+	wchar_t buffer[21];
+	wchar_t *p = buffer + 20;
+	*p-- = 0;
+	do {
+		*p-- = digits[n % 10];
+		n /= 10;
+	} while (n != 0);
+
+	m_out->output_string(++p);
+	return 20 - (p - buffer);
+}
+
+size_t
+console::vprintf(const wchar_t *fmt, va_list args) const
+{
+	wchar_t buffer[256];
+	const wchar_t *r = fmt;
+	wchar_t *w = buffer;
+	size_t count = 0;
+
+	while (r && *r) {
+		if (*r != L'%') {
+			count++;
+			*w++ = *r++;
+			continue;
+		}
+
+		*w = 0;
+		m_out->output_string(buffer);
+		w = buffer;
+
+		r++; // chomp the %
+
+		switch (*r++) {
+			case L'%':
+				m_out->output_string(const_cast<wchar_t*>(L"%"));
+				count++;
+				break;
+
+			case L'x':
+				count += print_hex(va_arg(args, uint32_t));
+				break;
+
+			case L'd':
+			case L'u':
+				count += print_dec(va_arg(args, uint32_t));
+				break;
+
+			case L's':
+				{
+					wchar_t *s = va_arg(args, wchar_t*);
+					count += wstrlen(s);
+					m_out->output_string(s);
+				}
+				break;
+
+			case L'l':
+				switch (*r++) {
+					case L'x':
+						count += print_long_hex(va_arg(args, uint64_t));
+						break;
+
+					case L'd':
+					case L'u':
+						count += print_long_dec(va_arg(args, uint64_t));
+						break;
+
+					default:
+						break;
+				}
+				break;
+
+			default:
+				break;
+		}
+	}
+
+	*w = 0;
+	m_out->output_string(buffer);
+	return count;
+}
+
+size_t
+console::printf(const wchar_t *fmt, ...) const
+{
+	va_list args;
+	va_start(args, fmt);
+
+	size_t result = vprintf(fmt, args);
+
+	va_end(args);
+	return result;
+}
+
+size_t
+console::print(const wchar_t *fmt, ...)
+{
+	va_list args;
+	va_start(args, fmt);
+
+	size_t result = get().vprintf(fmt, args);
+
+	va_end(args);
+	return result;
+}
+
+} // namespace boot

src/boot/console.h

@@ -1,20 +1,45 @@
+/// \file console.h
+/// Text output handler
 #pragma once
+#include <stdarg.h>
 #include <stddef.h>
-#include <efi/efi.h>
+#include <uefi/boot_services.h>
+#include <uefi/protos/simple_text_output.h>
+#include "kernel_args.h"
+#include "types.h"
 
-EFI_STATUS con_initialize(EFI_SYSTEM_TABLE *system_table, const CHAR16 *version);
-void con_status_begin(const CHAR16 *message);
-void con_status_ok();
-void con_status_fail(const CHAR16 *error);
-size_t con_printf(const CHAR16 *fmt, ...);
+namespace boot {
 
-EFI_STATUS
-con_get_framebuffer(
-	EFI_BOOT_SERVICES *bootsvc,
-	void **buffer,
-	size_t *buffer_size,
-	uint32_t *hres,
-	uint32_t *vres,
-	uint32_t *rmask,
-	uint32_t *gmask,
-	uint32_t *bmask);
+/// Object providing basic output functionality to the UEFI console
+class console
+{
+public:
+	using framebuffer = kernel::args::framebuffer;
+
+	console(uefi::boot_services *bs, uefi::protos::simple_text_output *out);
+
+	size_t print_hex(uint32_t n) const;
+	size_t print_dec(uint32_t n) const;
+	size_t print_long_hex(uint64_t n) const;
+	size_t print_long_dec(uint64_t n) const;
+	size_t printf(const wchar_t *fmt, ...) const;
+
+	const framebuffer & fb() const { return m_fb; };
+
+	static console & get() { return *s_console; }
+	static size_t print(const wchar_t *fmt, ...);
+
+private:
+	friend class status_line;
+
+	void pick_mode(uefi::boot_services *bs);
+	size_t vprintf(const wchar_t *fmt, va_list args) const;
+
+	size_t m_rows, m_cols;
+	uefi::protos::simple_text_output *m_out;
+	framebuffer m_fb;
+
+	static console *s_console;
+};
+
+} // namespace boot

src/boot/crt0.s

@@ -1,85 +0,0 @@
-;   crt0-efi-x86_64.S - x86_64 EFI startup code.
-;   Copyright (C) 1999 Hewlett-Packard Co.
-;	Contributed by David Mosberger <davidm@hpl.hp.com>.
-;   Copyright (C) 2005 Intel Co.
-;	Contributed by Fenghua Yu <fenghua.yu@intel.com>.
-;
-;    All rights reserved.
-;
-;    Redistribution and use in source and binary forms, with or without
-;    modification, are permitted provided that the following conditions
-;    are met:
-;
-;    * Redistributions of source code must retain the above copyright
-;      notice, this list of conditions and the following disclaimer.
-;    * Redistributions in binary form must reproduce the above
-;      copyright notice, this list of conditions and the following
-;      disclaimer in the documentation and/or other materials
-;      provided with the distribution.
-;    * Neither the name of Hewlett-Packard Co. nor the names of its
-;      contributors may be used to endorse or promote products derived
-;      from this software without specific prior written permission.
-;
-;    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-;    CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
-;    INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-;    MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-;    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
-;    BE LIABLE FOR ANYDIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
-;    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-;    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-;    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-;    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
-;    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
-;    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-;    SUCH DAMAGE.
-;
-;	2018-05-05 Converted to NASM syntax by Justin C. Miller
-
-extern ImageBase
-extern _DYNAMIC
-extern _relocate
-extern efi_main
-
-section .text
-align 4
-
-global _start
-_start:
-	sub rsp, 8
-	push rcx
-	push rdx
-
-	; These are already in RDI/RSI from EFI calling us, right? -justin
-	;lea rdi, [ImageBase]
-	;lea rsi, [_DYNAMIC]
-
-	pop rcx
-	pop rdx
-	push rcx
-	push rdx
-	call _relocate
-
-	pop rdi
-	pop rsi
-
-	call efi_main
-	add rsp, 8
-
-.exit:	
-  	ret
-
-; hand-craft a dummy .reloc section so EFI knows it's a relocatable executable:
-section .data
-dummy:
-	dd 0
-
-
-%define IMAGE_REL_ABSOLUTE	0
-
-section .reloc
-label1:
-	dd 0							; Page RVA
- 	dd 10							; Block Size (2*4+2)
-	dw (IMAGE_REL_ABSOLUTE<<12) + 0	; reloc for dummy
-

src/boot/elf.h

@@ -1,46 +1,32 @@
+/// \file elf.h
+/// Definitions and related constants for ELF64 structures
 #pragma once
 #include <stdint.h>
 
-#ifndef ELF_VERSION
-#define ELF_VERSION 1
-#endif
+namespace boot {
+namespace elf {
 
-#ifndef ELF_WORDSIZE
-#define ELF_WORDSIZE 2
-#endif
+constexpr uint8_t version = 1;
+constexpr uint8_t word_size = 2;
+constexpr uint8_t endianness = 1;
+constexpr uint8_t os_abi = 0;
+constexpr uint16_t machine = 0x3e;
 
-#ifndef ELF_ENDIAN
-#define ELF_ENDIAN 1
-#endif
+const unsigned PT_LOAD = 1;
+const unsigned ST_PROGBITS = 1;
+const unsigned ST_NOBITS = 8;
+const unsigned long SHF_ALLOC = 0x2;
 
-#ifndef ELF_OSABI
-#define ELF_OSABI 0
-#endif
-
-#ifndef ELF_MACHINE
-#define ELF_MACHINE 0x3e
-#endif
-
-const unsigned ELF_PT_LOAD = 1;
-const unsigned ELF_ST_PROGBITS = 1;
-const unsigned ELF_ST_NOBITS = 8;
-const unsigned long ELF_SHF_ALLOC = 0x2;
-
-struct elf_ident
+struct header
 {
 	char magic[4];
 
 	uint8_t word_size;
 	uint8_t endianness;
-	uint8_t version;
+	uint8_t header_version;
 	uint8_t os_abi;
 
 	uint64_t reserved;
-} __attribute__ ((packed));
-
-struct elf_header
-{
-	struct elf_ident ident;
 
 	uint16_t type;
 	uint16_t machine;
@@ -64,7 +50,7 @@ struct elf_header
 	uint16_t sh_str_idx;
 } __attribute__ ((packed));
 
-struct elf_program_header
+struct program_header
 {
 	uint32_t type;
 	uint32_t flags;
@@ -79,7 +65,7 @@ struct elf_program_header
 	uint64_t align;
 } __attribute__ ((packed));
 
-struct elf_section_header
+struct section_header
 {
 	uint32_t name;
 	uint32_t type;
@@ -92,3 +78,6 @@ struct elf_section_header
 	uint64_t align;
 	uint64_t entry_size;
 } __attribute__ ((packed));
+
+} // namespace elf
+} // namespace boot

src/boot/error.cpp

@@ -0,0 +1,69 @@
+#include "error.h"
+#include "console.h"
+#include "kernel_args.h"
+#include "status.h"
+
+namespace boot {
+namespace error {
+
+struct error_code_desc {
+	uefi::status code;
+	const wchar_t *name;
+};
+
+struct error_code_desc error_table[] = {
+#define STATUS_ERROR(name, num) { uefi::status::name, L#name },
+#define STATUS_WARNING(name, num) { uefi::status::name, L#name },
+#include "uefi/errors.inc"
+#undef STATUS_ERROR
+#undef STATUS_WARNING
+	{ uefi::status::success, nullptr }
+};
+
+const wchar_t *
+message(uefi::status status)
+{
+	int32_t i = -1;
+	while (error_table[++i].name != nullptr) {
+		if (error_table[i].code == status) return error_table[i].name;
+	}
+
+	if (uefi::is_error(status))
+		return L"Unknown Error";
+	else
+		return L"Unknown Warning";
+}
+
+[[ noreturn ]] static void
+cpu_assert(uefi::status s, const wchar_t *message)
+{
+	asm volatile (
+		"movq $0xeeeeeeebadbadbad, %%r8;"
+		"movq %0, %%r9;"
+		"movq %1, %%r10;"
+		"movq $0, %%rdx;"
+		"divq %%rdx;"
+		:
+		: "r"((uint64_t)s), "r"(message)
+		: "rax", "rdx", "r8", "r9", "r10");
+	while (1) asm("hlt");
+}
+
+[[ noreturn ]] void
+raise(uefi::status status, const wchar_t *message)
+{
+	if(status_line::fail(message, status))
+		while (1) asm("hlt");
+	else
+		cpu_assert(status, message);
+}
+
+
+} // namespace error
+} // namespace boot
+
+void debug_break()
+{
+	volatile int go = 0;
+	while (!go);
+}

src/boot/error.h

@@ -0,0 +1,33 @@
+/// \file error.h
+/// Error handling definitions
+#pragma once
+
+#include <stddef.h>
+#include <uefi/types.h>
+
+namespace boot {
+
+class console;
+
+namespace error {
+
+/// Halt or exit the program with the given error status/message
+[[ noreturn ]] void raise(uefi::status status, const wchar_t *message);
+
+const wchar_t * message(uefi::status status);
+
+} // namespace error
+} // namespace boot
+
+/// Debugging psuedo-breakpoint.
+void debug_break();
+
+/// Helper macro to raise an error if an operation fails.
+/// \arg s  An expression evaluating to a UEFI status
+/// \arg m  The error message to use on failure
+#define try_or_raise(s, m) \
+	do { \
+		uefi::status _s = (s); \
+		if (uefi::is_error(_s)) ::boot::error::raise(_s, (m)); \
+	} while(0)
+

src/boot/fs.cpp

@@ -0,0 +1,114 @@
+#include <uefi/types.h>
+#include <uefi/protos/file.h>
+#include <uefi/protos/file_info.h>
+#include <uefi/protos/loaded_image.h>
+#include <uefi/protos/simple_file_system.h>
+
+#include "fs.h"
+#include "console.h"
+#include "error.h"
+#include "memory.h"
+#include "status.h"
+
+namespace boot {
+namespace fs {
+
+file::file(uefi::protos::file *f, uefi::boot_services *bs) :
+	m_file(f),
+	m_bs(bs)
+{
+}
+
+file::file(file &o) :
+	m_file(o.m_file),
+	m_bs(o.m_bs)
+{
+	o.m_file = nullptr;
+}
+
+file::file(file &&o) :
+	m_file(o.m_file),
+	m_bs(o.m_bs)
+{
+	o.m_file = nullptr;
+}
+
+file::~file()
+{
+	if (m_file)
+		m_file->close();
+}
+
+file
+file::open(const wchar_t *path)
+{
+	uefi::protos::file *fh = nullptr;
+
+	try_or_raise(
+		m_file->open(&fh, path, uefi::file_mode::read, uefi::file_attr::none),
+		L"Could not open relative path to file");
+
+	return file(fh, m_bs);
+}
+
+buffer
+file::load(uefi::memory_type mem_type)
+{
+	uint8_t info_buf[sizeof(uefi::protos::file_info) + 100];
+	size_t size = sizeof(info_buf);
+	uefi::guid info_guid = uefi::protos::file_info::guid;
+
+	try_or_raise(
+		m_file->get_info(&info_guid, &size, &info_buf),
+		L"Could not get file info");
+
+	uefi::protos::file_info *info =
+		reinterpret_cast<uefi::protos::file_info*>(&info_buf);
+
+	size_t pages = memory::bytes_to_pages(info->file_size);
+	void *data = nullptr;
+	try_or_raise(
+		m_bs->allocate_pages(
+			uefi::allocate_type::any_pages,
+			mem_type, pages, &data),
+		L"Could not allocate pages to load file");
+
+	size = info->file_size;
+	try_or_raise(
+		m_file->read(&size, data),
+		L"Could not read from file");
+
+	return { .data = data, .size = size };
+}
+
+file
+get_boot_volume(uefi::handle image, uefi::boot_services *bs)
+{
+	status_line status(L"Looking up boot volume");
+
+	const uefi::guid le_guid = uefi::protos::loaded_image::guid;
+	uefi::protos::loaded_image *loaded_image = nullptr;
+
+	try_or_raise(
+		bs->handle_protocol(image, &le_guid,
+			reinterpret_cast<void**>(&loaded_image)),
+		L"Could not find currently running UEFI loaded image");
+
+	const uefi::guid sfs_guid = uefi::protos::simple_file_system::guid;
+	uefi::protos::simple_file_system *fs;
+	try_or_raise(
+		bs->handle_protocol(loaded_image->device_handle, &sfs_guid,
+			reinterpret_cast<void**>(&fs)),
+		L"Could not find filesystem protocol for boot volume");
+
+	uefi::protos::file *f;
+	try_or_raise(
+		fs->open_volume(&f),
+		L"Could not open the boot volume");
+
+	return file(f, bs);
+}
+
+} // namespace fs
+} // namespace boot
+

src/boot/fs.h

@@ -0,0 +1,45 @@
+/// \file fs.h
+/// Definitions for dealing with UEFI's disk access functions
+#pragma once
+
+#include <uefi/types.h>
+#include <uefi/boot_services.h>
+#include <uefi/protos/file.h>
+#include "types.h"
+
+namespace boot {
+namespace fs {
+
+/// A file or directory in a filesystem.
+class file
+{
+public:
+	file(file &&o);
+	file(file &o);
+	~file();
+
+	/// Open another file or directory, relative to this one.
+	/// \arg path  Relative path to the target file from this one
+	file open(const wchar_t *path);
+
+	/// Load the contents of this file into memory.
+	/// \arg mem_type  The UEFI memory type to use for allocation
+	/// \returns       A buffer describing the loaded memory. The
+	///                memory will be page-aligned.
+	buffer load(uefi::memory_type mem_type = uefi::memory_type::loader_data);
+
+private:
+	friend file get_boot_volume(uefi::handle, uefi::boot_services*);
+
+	file(uefi::protos::file *f, uefi::boot_services *bs);
+
+	uefi::protos::file *m_file;
+	uefi::boot_services *m_bs;
+};
+
+/// Get the filesystem this loader was loaded from.
+/// \returns  A `file` object representing the root directory of the volume
+file get_boot_volume(uefi::handle image, uefi::boot_services *bs);
+
+} // namespace fs
+} // namespace boot

src/boot/guids.inc

@@ -3,5 +3,9 @@ GUID(0x8868e871,0xe4f1,0x11d3,0xbc,0x22,0x00,0x80,0xc7,0x3c,0x88,0x81, guid_acpi
 GUID(0x09576e92,0x6d3f,0x11d2,0x8e,0x39,0x00,0xa0,0xc9,0x69,0x72,0x3b, guid_file_info);
 GUID(0x9042a9de,0x23dc,0x4a38,0x96,0xfb,0x7a,0xde,0xd0,0x80,0x51,0x6a, guid_gfx_out);
 GUID(0x964e5b22,0x6459,0x11d2,0x8e,0x39,0x00,0xa0,0xc9,0x69,0x72,0x3b, guid_simple_filesystem);
+GUID(0x09576e91,0x6d3f,0x11d2,0x8e,0x39,0x00,0xa0,0xc9,0x69,0x72,0x3b, guid_device_path);
+GUID(0x8b843e20,0x8132,0x4852,0x90,0xcc,0x55,0x1a,0x4e,0x4a,0x7f,0x1c, guid_device_path_to_text);
+
+GUID(0x10d0669c,0x9ec6,0x4268,0xbc,0x48,0xff,0x74,0x75,0x21,0xfe,0x07, guid_jsix_vendor);
 
 // vim: ft=c

src/boot/hardware.cpp

@@ -0,0 +1,55 @@
+#include "hardware.h"
+#include "console.h"
+#include "error.h"
+#include "status.h"
+
+namespace boot {
+namespace hw {
+
+void *
+find_acpi_table(uefi::system_table *st)
+{
+	status_line status(L"Searching for ACPI table");
+
+	// Find ACPI tables. Ignore ACPI 1.0 if a 2.0 table is found.
+	uintptr_t acpi1_table = 0;
+
+	for (size_t i = 0; i < st->number_of_table_entries; ++i) {
+		uefi::configuration_table *table = &st->configuration_table[i];
+
+		// If we find an ACPI 2.0 table, return it immediately
+		if (table->vendor_guid == uefi::vendor_guids::acpi2)
+			return table->vendor_table;
+
+		if (table->vendor_guid == uefi::vendor_guids::acpi1) {
+			// Mark a v1 table with the LSB high
+			acpi1_table = reinterpret_cast<uintptr_t>(table->vendor_table);
+			acpi1_table |= 1;
+		}
+	}
+
+	if (!acpi1_table) {
+		error::raise(uefi::status::not_found, L"Could not find ACPI table");
+	} else if (acpi1_table & 1) {
+		status_line::warn(L"Only found ACPI 1.0 table");
+	}
+
+	return reinterpret_cast<void*>(acpi1_table);
+}
+
+void
+setup_cr4()
+{
+	uint64_t cr4 = 0;
+	asm volatile ( "mov %%cr4, %0" : "=r" (cr4) );
+	cr4 |=
+		0x000080 | // Enable global pages
+		0x000200 | // Enable FXSAVE/FXRSTOR
+		0x010000 | // Enable FSGSBASE
+		0x020000 | // Enable PCIDs
+		0;
+	asm volatile ( "mov %0, %%cr4" :: "r" (cr4) );
+}
+
+} // namespace hw
+} // namespace boot

src/boot/hardware.h

@@ -0,0 +1,20 @@
+/// \file hardware.h
+/// Functions and definitions for detecting and dealing with hardware
+#pragma once
+
+#include <uefi/tables.h>
+
+namespace boot {
+namespace hw {
+
+/// Find the ACPI table in the system configuration tables
+/// and return a pointer to it. If only an ACPI 1.0 table is
+/// available, the returned pointer will have its least
+/// significant bit set to 1.
+void * find_acpi_table(uefi::system_table *st);
+
+/// Enable CPU options in CR4 for the kernel starting state.
+void setup_cr4();
+
+} // namespace hw
+} // namespace boot

src/boot/loader.c

@@ -1,255 +0,0 @@
-#include "elf.h"
-#include "guids.h"
-#include "loader.h"
-#include "memory.h"
-#include "utility.h"
-
-#define PAGE_SIZE 0x1000
-
-static CHAR16 kernel_name[] = KERNEL_FILENAME;
-static CHAR16 initrd_name[] = INITRD_FILENAME;
-
-EFI_STATUS
-loader_alloc_pages(
-	EFI_BOOT_SERVICES *bootsvc,
-	EFI_MEMORY_TYPE mem_type,
-	size_t *length,
-	void **pages)
-{
-	EFI_STATUS status;
-
-	size_t page_count = ((*length - 1) / PAGE_SIZE) + 1;
-	EFI_PHYSICAL_ADDRESS addr = (EFI_PHYSICAL_ADDRESS)*pages;
-
-	status = bootsvc->AllocatePages(AllocateAddress, mem_type, page_count, &addr);
-	if (status == EFI_NOT_FOUND || status == EFI_OUT_OF_RESOURCES) {
-		// couldn't get the address we wanted, try loading the kernel anywhere
-		status =
-			bootsvc->AllocatePages(AllocateAnyPages, mem_type, page_count, &addr);
-	}
-	CHECK_EFI_STATUS_OR_RETURN(status,
-		L"Allocating %d kernel pages type %x",
-		page_count, mem_type);
-
-	*length = page_count * PAGE_SIZE;
-	*pages = (void *)addr;
-
-	return EFI_SUCCESS;
-}
-
-EFI_STATUS
-loader_load_initrd(
-	EFI_BOOT_SERVICES *bootsvc,
-	EFI_FILE_PROTOCOL *root,
-	struct loader_data *data)
-{
-	EFI_STATUS status;
-
-	EFI_FILE_PROTOCOL *file = NULL;
-	status = root->Open(root, &file, (CHAR16 *)initrd_name, EFI_FILE_MODE_READ,
-						EFI_FILE_READ_ONLY | EFI_FILE_HIDDEN | EFI_FILE_SYSTEM);
-
-	if (status == EFI_NOT_FOUND)
-		return status;
-
-	CHECK_EFI_STATUS_OR_RETURN(status, L"Opening file %s", initrd_name);
-
-	char info[sizeof(EFI_FILE_INFO) + 100];
-	size_t info_length = sizeof(info);
-
-	status = file->GetInfo(file, &guid_file_info, &info_length, info);
-	CHECK_EFI_STATUS_OR_RETURN(status, L"Getting file info");
-
-	data->initrd_length = ((EFI_FILE_INFO *)info)->FileSize;
-
-	status = loader_alloc_pages(
-			bootsvc,
-			INITRD_MEMTYPE,
-			&data->initrd_length,
-			&data->initrd);
-	CHECK_EFI_STATUS_OR_RETURN(status, L"Allocating pages");
-
-	status = file->Read(file, &data->initrd_length, data->initrd);
-	CHECK_EFI_STATUS_OR_RETURN(status, L"Reading file");
-
-	status = file->Close(file);
-	CHECK_EFI_STATUS_OR_RETURN(status, L"Closing file handle");
-
-	return EFI_SUCCESS;
-}
-
-
-EFI_STATUS
-loader_load_elf(
-	EFI_BOOT_SERVICES *bootsvc,
-	EFI_FILE_PROTOCOL *root,
-	struct loader_data *data)
-{
-	EFI_STATUS status;
-
-	con_debug(L"Opening kernel file %s\r\n", (CHAR16 *)kernel_name);
-
-	EFI_FILE_PROTOCOL *file = NULL;
-	status = root->Open(root, &file, (CHAR16 *)kernel_name, EFI_FILE_MODE_READ,
-						EFI_FILE_READ_ONLY | EFI_FILE_HIDDEN | EFI_FILE_SYSTEM);
-
-	if (status == EFI_NOT_FOUND)
-		return status;
-
-	uint64_t length = 0;
-	data->kernel = 0;
-	data->kernel_entry = 0;
-	data->kernel_length = 0;
-
-	CHECK_EFI_STATUS_OR_RETURN(status, L"Opening file %s", kernel_name);
-
-	struct elf_header header;
-
-	length = sizeof(struct elf_header);
-	status = file->Read(file, &length, &header);
-	CHECK_EFI_STATUS_OR_RETURN(status, L"Reading ELF header");
-
-	con_debug(L"Read %u bytes of ELF header\r\n", length);
-
-	if (length < sizeof(struct elf_header))
-		CHECK_EFI_STATUS_OR_RETURN(EFI_LOAD_ERROR, L"Incomplete read of ELF header");
-
-	static const char expected[] = {0x7f, 'E', 'L', 'F'};
-	for (int i = 0; i < sizeof(expected); ++i) {
-		if (header.ident.magic[i] != expected[i])
-			CHECK_EFI_STATUS_OR_RETURN(EFI_LOAD_ERROR, L"Bad ELF magic number");
-	}
-
-	if (header.ident.word_size != ELF_WORDSIZE)
-		CHECK_EFI_STATUS_OR_RETURN(EFI_LOAD_ERROR, L"ELF load error: 32 bit ELF not supported");
-
-	if (header.ph_entsize != sizeof(struct elf_program_header))
-		CHECK_EFI_STATUS_OR_RETURN(EFI_LOAD_ERROR, L"ELF load error: program header size mismatch");
-
-	if (header.ident.version != ELF_VERSION ||
-		header.version != ELF_VERSION)
-		CHECK_EFI_STATUS_OR_RETURN(EFI_LOAD_ERROR, L"ELF load error: wrong ELF version");
-
-	if (header.ident.endianness != 1 ||
-		header.ident.os_abi != 0 ||
-		header.machine != 0x3e)
-		CHECK_EFI_STATUS_OR_RETURN(EFI_LOAD_ERROR, L"ELF load error: wrong machine architecture");
-
-	con_debug(L"ELF is valid, entrypoint %lu\r\n", header.entrypoint);
-
-	data->kernel_entry = (void *)header.entrypoint;
-
-	struct elf_program_header prog_header;
-	for (int i = 0; i < header.ph_num; ++i) {
-		con_debug(L"Reading ELF program header %d\r\n", i);
-
-		status = file->SetPosition(file, header.ph_offset + i * header.ph_entsize);
-		CHECK_EFI_STATUS_OR_RETURN(status, L"Setting ELF file position");
-
-		length = header.ph_entsize;
-		status = file->Read(file, &length, &prog_header);
-		CHECK_EFI_STATUS_OR_RETURN(status, L"Reading ELF program header");
-
-		if (prog_header.type != ELF_PT_LOAD) continue;
-
-		length = prog_header.mem_size;
-		void *addr = (void *)(prog_header.vaddr - KERNEL_VIRT_ADDRESS);
-		status = loader_alloc_pages(bootsvc, KERNEL_MEMTYPE, &length, &addr);
-		CHECK_EFI_STATUS_OR_RETURN(status, L"Allocating kernel pages");
-
-		if (data->kernel == 0)
-			data->kernel = addr;
-		data->kernel_length = (uint64_t)addr + length - (uint64_t)data->kernel;
-	}
-
-	struct elf_section_header sec_header;
-	for (int i = 0; i < header.sh_num; ++i) {
-		con_debug(L"Reading ELF section header %d ", i);
-
-		status = file->SetPosition(file, header.sh_offset + i * header.sh_entsize);
-		CHECK_EFI_STATUS_OR_RETURN(status, L"Setting ELF file position");
-
-		length = header.sh_entsize;
-		status = file->Read(file, &length, &sec_header);
-		CHECK_EFI_STATUS_OR_RETURN(status, L"Reading ELF section header");
-
-		if ((sec_header.flags & ELF_SHF_ALLOC) == 0) {
-			con_debug(L"SHF_ALLOC section\r\n");
-			continue;
-		}
-
-		void *addr = (void *)(sec_header.addr - KERNEL_VIRT_ADDRESS);
-
-		if (sec_header.type == ELF_ST_PROGBITS) {
-			con_debug(L"PROGBITS section\r\n");
-			status = file->SetPosition(file, sec_header.offset);
-			CHECK_EFI_STATUS_OR_RETURN(status, L"Setting ELF file position");
-
-			length = sec_header.size;
-			status = file->Read(file, &length, addr);
-			CHECK_EFI_STATUS_OR_RETURN(status, L"Reading file");
-		} else if (sec_header.type == ELF_ST_NOBITS) {
-			con_debug(L"NOBITS section\r\n");
-			bootsvc->SetMem(addr, sec_header.size, 0);
-		} else {
-			con_debug(L"other section\r\n");
-		}
-	}
-
-	status = file->Close(file);
-	CHECK_EFI_STATUS_OR_RETURN(status, L"Closing file handle");
-
-	return EFI_SUCCESS;
-}
-
-
-EFI_STATUS
-loader_load_kernel(
-	EFI_BOOT_SERVICES *bootsvc,
-	struct loader_data *data)
-{
-	if (data == NULL)
-		CHECK_EFI_STATUS_OR_RETURN(EFI_INVALID_PARAMETER, L"NULL loader_data");
-
-	EFI_STATUS status;
-	EFI_HANDLE *handles = NULL;
-	size_t handleCount = 0;
-
-	status = bootsvc->LocateHandleBuffer(ByProtocol, &guid_simple_filesystem, NULL, &handleCount, &handles);
-	CHECK_EFI_STATUS_OR_RETURN(status, L"LocateHandleBuffer");
-
-	for (unsigned i = 0; i < handleCount; ++i) {
-		EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *fileSystem = NULL;
-
-		status = bootsvc->HandleProtocol(handles[i], &guid_simple_filesystem, (void **)&fileSystem);
-		CHECK_EFI_STATUS_OR_RETURN(status, L"HandleProtocol");
-
-		EFI_FILE_PROTOCOL *root = NULL;
-		status = fileSystem->OpenVolume(fileSystem, &root);
-		CHECK_EFI_STATUS_OR_RETURN(status, L"OpenVolume");
-
-		status = loader_load_elf(bootsvc, root, data);
-		if (status == EFI_NOT_FOUND)
-			continue;
-
-		CHECK_EFI_STATUS_OR_RETURN(status, L"loader_load_elf: %s", kernel_name);
-
-		data->initrd = (void *)((uint64_t)data->kernel + data->kernel_length);
-		status = loader_load_initrd(bootsvc, root, data);
-
-		CHECK_EFI_STATUS_OR_RETURN(status, L"loader_load_file: %s", initrd_name);
-
-		data->data = (void *)((uint64_t)data->initrd + data->initrd_length);
-		data->data_length += PAGE_SIZE; // extra page for map growth
-		status = loader_alloc_pages(
-				bootsvc,
-				KERNEL_DATA_MEMTYPE,
-				&data->data_length,
-				&data->data);
-		CHECK_EFI_STATUS_OR_RETURN(status, L"loader_alloc_pages: kernel data");
-
-		return EFI_SUCCESS;
-	}
-
-	return EFI_NOT_FOUND;
-}

src/boot/loader.cpp

@@ -0,0 +1,110 @@
+#include <uefi/boot_services.h>
+#include <uefi/types.h>
+
+#include "loader.h"
+#include "console.h"
+#include "elf.h"
+#include "error.h"
+#include "fs.h"
+#include "memory.h"
+#include "paging.h"
+#include "status.h"
+
+namespace args = kernel::args;
+
+namespace boot {
+namespace loader {
+
+buffer
+load_file(
+	fs::file &disk,
+	const wchar_t *name,
+	const wchar_t *path,
+	uefi::memory_type type)
+{
+	status_line status(L"Loading file", name);
+
+	fs::file file = disk.open(path);
+	buffer b = file.load(type);
+
+	console::print(L"    Loaded at: 0x%lx, %d bytes\r\n", b.data, b.size);
+	return b;
+}
+
+
+static bool
+is_elfheader_valid(const elf::header *header)
+{
+	return
+		header->magic[0] == 0x7f &&
+		header->magic[1] == 'E' &&
+		header->magic[2] == 'L' &&
+		header->magic[3] == 'F' &&
+		header->word_size == elf::word_size &&
+		header->endianness == elf::endianness &&
+		header->os_abi == elf::os_abi &&
+		header->machine == elf::machine &&
+		header->header_version == elf::version;
+}
+
+void
+load_program(
+	args::program &program,
+	const wchar_t *name,
+	buffer data,
+	uefi::boot_services *bs)
+{
+	status_line status(L"Loading program:", name);
+	const elf::header *header = reinterpret_cast<const elf::header*>(data.data);
+
+	if (data.size < sizeof(elf::header) || !is_elfheader_valid(header))
+		error::raise(uefi::status::load_error, L"ELF file not valid");
+
+	uintptr_t prog_base = uintptr_t(-1);
+	uintptr_t prog_end = 0;
+
+	for (int i = 0; i < header->ph_num; ++i) {
+		ptrdiff_t offset = header->ph_offset + i * header->ph_entsize;
+		const elf::program_header *pheader =
+			offset_ptr<elf::program_header>(data.data, offset);
+
+		if (pheader->type != elf::PT_LOAD)
+			continue;
+
+		uintptr_t end = pheader->vaddr + pheader->mem_size;
+		if (pheader->vaddr < prog_base) prog_base = pheader->vaddr;
+		if (end > prog_end) prog_end = end;
+	}
+
+	size_t total_size = prog_end - prog_base;
+	size_t num_pages = memory::bytes_to_pages(total_size);
+	void *pages = nullptr;
+
+	try_or_raise(
+		bs->allocate_pages(uefi::allocate_type::any_pages,
+			uefi::memory_type::loader_data, num_pages, &pages),
+		L"Failed allocating space for program");
+
+	bs->set_mem(pages, total_size, 0);
+
+	for (int i = 0; i < header->ph_num; ++i) {
+		ptrdiff_t offset = header->ph_offset + i * header->ph_entsize;
+		const elf::program_header *pheader =
+			offset_ptr<elf::program_header>(data.data, offset);
+
+		if (pheader->type != elf::PT_LOAD)
+			continue;
+
+		void *src_start = offset_ptr<void>(data.data, pheader->offset);
+		void *dest_start = offset_ptr<void>(pages, pheader->vaddr - prog_base);
+		bs->copy_mem(dest_start, src_start, pheader->file_size);
+	}
+
+	program.phys_addr = reinterpret_cast<uintptr_t>(pages);
+	program.size = total_size;
+	program.virt_addr = prog_base;
+	program.entrypoint = header->entrypoint;
+}
+
+} // namespace loader
+} // namespace boot

src/boot/loader.h

@@ -1,47 +1,41 @@
+/// \file loader.h
+/// Definitions for loading the kernel into memory
 #pragma once
-#include <efi/efi.h>
-#include <stddef.h>
 
-#define PAGE_SIZE 0x1000
+#include <uefi/boot_services.h>
 
-#ifndef KERNEL_PHYS_ADDRESS
-#define KERNEL_PHYS_ADDRESS 0x100000
-#endif
+#include "kernel_args.h"
+#include "memory.h"
+#include "types.h"
 
-#ifndef KERNEL_VIRT_ADDRESS
-#define KERNEL_VIRT_ADDRESS 0xFFFFFF0000000000
-#endif
+namespace boot {
 
-#ifndef KERNEL_MEMTYPE
-#define KERNEL_MEMTYPE 0x80000000
-#endif
+namespace fs { class file; }
 
-#ifndef INITRD_MEMTYPE
-#define INITRD_MEMTYPE 0x80000001
-#endif
+namespace loader {
 
-#ifndef KERNEL_DATA_MEMTYPE
-#define KERNEL_DATA_MEMTYPE 0x80000002
-#endif
+/// Load a file from disk into memory.
+/// \arg disk  The opened UEFI filesystem to load from
+/// \arg name  Name of the module (informational only)
+/// \arg path  Path on `disk` of the file to load
+/// \arg type  Memory type to use for allocation
+buffer
+load_file(
+	fs::file &disk,
+	const wchar_t *name,
+	const wchar_t *path,
+	uefi::memory_type type = uefi::memory_type::loader_data);
 
-#ifndef KERNEL_FILENAME
-#define KERNEL_FILENAME L"kernel.elf"
-#endif
+/// Parse and load an ELF file in memory into a loaded image.
+/// \arg program  The program structure to fill
+/// \arg data     Buffer of the ELF file in memory
+/// \arg bs       Boot services
+void
+load_program(
+	kernel::args::program &program,
+	const wchar_t *name,
+	buffer data,
+	uefi::boot_services *bs);
 
-#ifndef INITRD_FILENAME
-#define INITRD_FILENAME L"initrd.img"
-#endif
-
-struct loader_data {
-	void *kernel;
-	void *kernel_entry;
-	size_t kernel_length;
-
-	void *initrd;
-	size_t initrd_length;
-
-	void *data;
-	size_t data_length;
-};
-
-EFI_STATUS loader_load_kernel(EFI_BOOT_SERVICES *bootsvc, struct loader_data *data);
+} // namespace loader
+} // namespace boot

src/boot/main.c

@@ -1,171 +0,0 @@
-#include <stdalign.h>
-#include <stddef.h>
-
-#include <efi/efi.h>
-
-#include "console.h"
-#include "guids.h"
-#include "kernel_data.h"
-#include "loader.h"
-#include "memory.h"
-#include "utility.h"
-
-#ifndef GIT_VERSION_WIDE
-#define GIT_VERSION_WIDE L"no version"
-#endif
-
-#define KERNEL_HEADER_MAGIC   0x600db007
-#define KERNEL_HEADER_VERSION 1
-
-#pragma pack(push, 1)
-struct kernel_header {
-	uint32_t magic;
-	uint16_t version;
-	uint16_t length;
-
-	uint8_t major;
-	uint8_t minor;
-	uint16_t patch;
-	uint32_t gitsha;
-};
-#pragma pack(pop)
-
-EFI_STATUS
-efi_main(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *system_table)
-{
-	EFI_STATUS status;
-	EFI_BOOT_SERVICES *bootsvc = system_table->BootServices;
-	EFI_RUNTIME_SERVICES *runsvc = system_table->RuntimeServices;
-
-	// When checking console initialization, use CHECK_EFI_STATUS_OR_RETURN
-	// because we can't be sure if the console was fully set up
-	status = con_initialize(system_table, GIT_VERSION_WIDE);
-	CHECK_EFI_STATUS_OR_RETURN(status, "con_initialize");
-	// From here on out, we can use CHECK_EFI_STATUS_OR_FAIL instead
-
-	memory_init_pointer_fixup(bootsvc, runsvc);
-
-	// Find ACPI tables. Ignore ACPI 1.0 if a 2.0 table is found.
-	//
-	void *acpi_table = NULL;
-	for (size_t i=0; i<system_table->NumberOfTableEntries; ++i) {
-		EFI_CONFIGURATION_TABLE *efi_table = &system_table->ConfigurationTable[i];
-		if (is_guid(&efi_table->VendorGuid, &guid_acpi2)) {
-			acpi_table = efi_table->VendorTable;
-			break;
-		} else if (is_guid(&efi_table->VendorGuid, &guid_acpi1)) {
-			// Mark a v1 table with the LSB high
-			acpi_table = (void *)((intptr_t)efi_table->VendorTable | 0x1);
-		}
-	}
-
-	// Compute necessary number of data pages
-	//
-	size_t data_length = 0;
-	status = memory_get_map_length(bootsvc, &data_length);
-	CHECK_EFI_STATUS_OR_FAIL(status);
-
-	size_t header_size = sizeof(struct popcorn_data);
-	const size_t header_align = alignof(struct popcorn_data);
-	if (header_size % header_align)
-		header_size += header_align - (header_size % header_align);
-
-	data_length += header_size;
-
-
-	// Load the kernel image from disk and check it
-	//
-	con_printf(L"Loading kernel into memory...\r\n");
-
-	struct loader_data load;
-	load.data_length = data_length;
-	status = loader_load_kernel(bootsvc, &load);
-	CHECK_EFI_STATUS_OR_FAIL(status);
-
-	con_printf(L"    %u image bytes at 0x%x\r\n", load.kernel_length, load.kernel);
-	con_printf(L"    %u initrd bytes at 0x%x\r\n", load.initrd_length, load.initrd);
-	con_printf(L"    %u data bytes at 0x%x\r\n", load.data_length, load.data);
-
-	struct kernel_header *version = (struct kernel_header *)load.kernel;
-	if (version->magic != KERNEL_HEADER_MAGIC) {
-		con_printf(L"    bad magic %x\r\n", version->magic);
-		CHECK_EFI_STATUS_OR_FAIL(EFI_CRC_ERROR);
-	}
-
-	con_printf(L"    Kernel version %d.%d.%d %x%s\r\n",
-			version->major, version->minor, version->patch, version->gitsha & 0x0fffffff,
-			version->gitsha & 0xf0000000 ? "*" : "");
-	con_printf(L"    Entrypoint 0x%x\r\n", load.kernel_entry);
-
-	void (*kernel_main)() = load.kernel_entry;
-	memory_mark_pointer_fixup((void **)&kernel_main);
-
-	// Set up the kernel data pages to pass to the kernel
-	//
-	struct popcorn_data *data_header = (struct popcorn_data *)load.data; 
-	memory_mark_pointer_fixup((void **)&data_header);
-
-	data_header->magic = DATA_HEADER_MAGIC;
-	data_header->version = DATA_HEADER_VERSION;
-	data_header->length = sizeof(struct popcorn_data);
-
-	data_header->flags = 0;
-
-	data_header->initrd = load.initrd;
-	data_header->initrd_length = load.initrd_length;
-	memory_mark_pointer_fixup((void **)&data_header->initrd);
-
-	data_header->data = load.data;
-	data_header->data_length = load.data_length;
-	memory_mark_pointer_fixup((void **)&data_header->data);
-
-	data_header->memory_map = (EFI_MEMORY_DESCRIPTOR *)(data_header + 1);
-	memory_mark_pointer_fixup((void **)&data_header->memory_map);
-
-	data_header->runtime = runsvc;
-	memory_mark_pointer_fixup((void **)&data_header->runtime);
-
-	data_header->acpi_table = acpi_table;
-	memory_mark_pointer_fixup((void **)&data_header->acpi_table);
-
-	data_header->_reserved0 = 0;
-	data_header->_reserved1 = 0;
-
-	// Figure out the framebuffer (if any) and add that to the data header
-	//
-	status = con_get_framebuffer(
-			bootsvc, 
-			&data_header->frame_buffer,
-			&data_header->frame_buffer_length,
-			&data_header->hres,
-			&data_header->vres,
-			&data_header->rmask,
-			&data_header->gmask,
-			&data_header->bmask);
-	CHECK_EFI_STATUS_OR_FAIL(status);
-	memory_mark_pointer_fixup((void **)&data_header->frame_buffer);
-
-	// Save the memory map and tell the firmware we're taking control.
-	//
-	struct memory_map map;
-	map.entries = data_header->memory_map;
-	map.length = (load.data_length - header_size);
-
-	status = memory_get_map(bootsvc, &map);
-	CHECK_EFI_STATUS_OR_FAIL(status);
-
-	data_header->memory_map_length = map.length;
-	data_header->memory_map_desc_size = map.size;
-
-	// bootsvc->Stall(5000000);
-
-	status = bootsvc->ExitBootServices(image_handle, map.key);
-	CHECK_EFI_STATUS_OR_ASSERT(status, 0);
-
-	memory_virtualize(runsvc, &map);
-
-	// Hand control to the kernel
-	//
-	kernel_main(data_header);
-	return EFI_LOAD_ERROR;
-}

src/boot/main.cpp

@@ -0,0 +1,211 @@
+#include <uefi/types.h>
+#include <uefi/guid.h>
+#include <uefi/tables.h>
+#include <uefi/protos/simple_text_output.h>
+
+#include <stdalign.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "console.h"
+#include "cpu/cpu.h"
+#include "error.h"
+#include "fs.h"
+#include "hardware.h"
+#include "loader.h"
+#include "memory.h"
+#include "paging.h"
+#include "status.h"
+
+#include "kernel_args.h"
+
+namespace kernel {
+#include "kernel_memory.h"
+}
+
+namespace args = kernel::args;
+
+namespace boot {
+
+constexpr int max_modules = 5; // Max modules to allocate room for
+constexpr int max_programs = 5; // Max programs to allocate room for
+
+struct program_desc
+{
+	const wchar_t *name;
+	const wchar_t *path;
+};
+
+const program_desc program_list[] = {
+	{L"kernel", L"jsix.elf"},
+	{L"null driver", L"nulldrv.elf"},
+	{L"fb driver", L"fb.elf"},
+};
+
+/// Change a pointer to point to the higher-half linear-offset version
+/// of the address it points to.
+template <typename T>
+void change_pointer(T *&pointer)
+{
+	pointer = offset_ptr<T>(pointer, kernel::memory::page_offset);
+}
+
+/// Allocate space for kernel args. Allocates enough space from pool
+/// memory for the args header and the module and program headers.
+args::header *
+allocate_args_structure(
+	uefi::boot_services *bs,
+	size_t max_modules,
+	size_t max_programs)
+{
+	status_line status {L"Setting up kernel args memory"};
+
+	args::header *args = nullptr;
+
+	size_t args_size =
+		sizeof(args::header) + // The header itself
+		max_modules * sizeof(args::module) +  // The module structures
+		max_programs * sizeof(args::program); // The program structures
+
+	try_or_raise(
+		bs->allocate_pool(uefi::memory_type::loader_data, args_size,
+			reinterpret_cast<void**>(&args)),
+		L"Could not allocate argument memory");
+
+	bs->set_mem(args, args_size, 0);
+
+	args->modules =
+		reinterpret_cast<args::module*>(args + 1);
+	args->num_modules = 0;
+
+	args->programs =
+		reinterpret_cast<args::program*>(args->modules + max_modules);
+	args->num_programs = 0;
+
+	return args;
+}
+
+/// Add a module to the kernel args list
+inline void
+add_module(args::header *args, args::mod_type type, buffer &data)
+{
+	args::module &m = args->modules[args->num_modules++];
+	m.type = type;
+	m.location = data.data;
+	m.size = data.size;
+}
+
+/// Check that all required cpu features are supported
+void
+check_cpu_supported()
+{
+	status_line status {L"Checking CPU features"};
+
+	cpu::cpu_id cpu;
+	uint64_t missing = cpu.missing();
+	if (missing) {
+#define CPU_FEATURE_OPT(...)
+#define CPU_FEATURE_REQ(name, ...) \
+		if (!cpu.has_feature(cpu::feature::name)) { \
+			status::fail(L"CPU required feature " L ## #name, uefi::status::unsupported); \
+		}
+#include "cpu/features.inc"
+#undef CPU_FEATURE_REQ
+#undef CPU_FEATURE_OPT
+
+		error::raise(uefi::status::unsupported, L"CPU not supported");
+	}
+}
+
+/// The main procedure for the portion of the loader that runs while
+/// UEFI is still in control of the machine. (ie, while the loader still
+/// has access to boot services.
+args::header *
+uefi_preboot(uefi::handle image, uefi::system_table *st)
+{
+	status_line status {L"Performing UEFI pre-boot"};
+
+	uefi::boot_services *bs = st->boot_services;
+	uefi::runtime_services *rs = st->runtime_services;
+	memory::init_pointer_fixup(bs, rs);
+
+	args::header *args =
+		allocate_args_structure(bs, max_modules, max_programs);
+
+	args->magic = args::magic;
+	args->version = args::version;
+	args->runtime_services = rs;
+	args->acpi_table = hw::find_acpi_table(st);
+	paging::allocate_tables(args, bs);
+
+	memory::mark_pointer_fixup(&args->runtime_services);
+
+	fs::file disk = fs::get_boot_volume(image, bs);
+
+	buffer symbols = loader::load_file(disk, L"symbol table", L"symbol_table.dat",
+				uefi::memory_type::loader_data);
+	add_module(args, args::mod_type::symbol_table, symbols);
+
+	for (auto &desc : program_list) {
+		buffer buf = loader::load_file(disk, desc.name, desc.path);
+		args::program &program = args->programs[args->num_programs++];
+		loader::load_program(program, desc.name, buf, bs);
+	}
+
+	for (unsigned i = 0; i < args->num_modules; ++i) {
+		args::module &mod = args->modules[i];
+		change_pointer(mod.location);
+	}
+
+	return args;
+}
+
+memory::efi_mem_map
+uefi_exit(args::header *args, uefi::handle image, uefi::boot_services *bs)
+{
+	status_line status {L"Exiting UEFI"};
+
+	memory::efi_mem_map map =
+		memory::build_kernel_mem_map(args, bs);
+
+	try_or_raise(
+		bs->exit_boot_services(image, map.key),
+		L"Failed to exit boot services");
+
+	return map;
+}
+
+} // namespace boot
+
+/// The UEFI entrypoint for the loader.
+extern "C" uefi::status
+efi_main(uefi::handle image, uefi::system_table *st)
+{
+	using namespace boot;
+	console con(st->boot_services, st->con_out);
+	check_cpu_supported();
+
+	args::header *args = uefi_preboot(image, st);
+	memory::efi_mem_map map = uefi_exit(args, image, st->boot_services);
+
+	args->video = con.fb();
+	status_bar status {con.fb()}; // Switch to fb status display
+
+	args::program &kernel = args->programs[0];
+	paging::map_pages(args, kernel.phys_addr, kernel.virt_addr, kernel.size);
+	kernel::entrypoint kentry =
+		reinterpret_cast<kernel::entrypoint>(kernel.entrypoint);
+	status.next();
+
+	memory::virtualize(args->pml4, map, st->runtime_services);
+	status.next();
+
+	change_pointer(args->pml4);
+	hw::setup_cr4();
+	status.next();
+
+	kentry(args);
+	debug_break();
+	return uefi::status::unsupported;
+}
+

src/boot/memory.c

@@ -1,205 +0,0 @@
-#include <stddef.h>
-
-#include "loader.h"
-#include "memory.h"
-#include "utility.h"
-
-#define INCREMENT_DESC(p, b)  (EFI_MEMORY_DESCRIPTOR*)(((uint8_t*)(p))+(b))
-
-size_t fixup_pointer_index = 0;
-void **fixup_pointers[64];
-uint64_t *new_pml4 = 0;
-
-const CHAR16 *memory_type_names[] = {
-	L"EfiReservedMemoryType",
-	L"EfiLoaderCode",
-	L"EfiLoaderData",
-	L"EfiBootServicesCode",
-	L"EfiBootServicesData",
-	L"EfiRuntimeServicesCode",
-	L"EfiRuntimeServicesData",
-	L"EfiConventionalMemory",
-	L"EfiUnusableMemory",
-	L"EfiACPIReclaimMemory",
-	L"EfiACPIMemoryNVS",
-	L"EfiMemoryMappedIO",
-	L"EfiMemoryMappedIOPortSpace",
-	L"EfiPalCode",
-	L"EfiPersistentMemory",
-};
-
-static const CHAR16 *
-memory_type_name(UINT32 value)
-{
-	if (value >= (sizeof(memory_type_names) / sizeof(CHAR16 *))) {
-		if (value == KERNEL_DATA_MEMTYPE) return L"Kernel Data";
-		else if (value == KERNEL_MEMTYPE) return L"Kernel Image";
-		else return L"Bad Type Value";
-	}
-	return memory_type_names[value];
-}
-
-void EFIAPI
-memory_update_marked_addresses(EFI_EVENT UNUSED *event, void *context)
-{
-	EFI_RUNTIME_SERVICES *runsvc = (EFI_RUNTIME_SERVICES*)context;
-	for (size_t i = 0; i < fixup_pointer_index; ++i) {
-		if (fixup_pointers[i])
-			runsvc->ConvertPointer(0, fixup_pointers[i]);
-	}
-}
-
-EFI_STATUS
-memory_init_pointer_fixup(EFI_BOOT_SERVICES *bootsvc, EFI_RUNTIME_SERVICES *runsvc)
-{
-	EFI_STATUS status;
-	EFI_EVENT event;
-
-	status = bootsvc->CreateEvent(
-			EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE,
-			TPL_CALLBACK,
-			(EFI_EVENT_NOTIFY)&memory_update_marked_addresses,
-			runsvc,
-			&event);
-
-	CHECK_EFI_STATUS_OR_RETURN(status, "Failed to initialize pointer update event.");
-
-	// Reserve a page for our replacement PML4, plus some pages for the kernel to use
-	// as page tables while it gets started.
-	EFI_PHYSICAL_ADDRESS addr = 0;
-	status = bootsvc->AllocatePages(AllocateAnyPages, EfiLoaderData, 16, &addr);
-	CHECK_EFI_STATUS_OR_RETURN(status, "Failed to allocate page table pages.");
-
-	new_pml4 = (uint64_t *)addr;
-	return EFI_SUCCESS;
-}
-
-void
-memory_mark_pointer_fixup(void **p)
-{
-	if (fixup_pointer_index == 0) {
-		const size_t count = sizeof(fixup_pointers) / sizeof(void*);
-		for (size_t i = 0; i < count; ++i) fixup_pointers[i] = 0;
-	}
-	fixup_pointers[fixup_pointer_index++] = p;
-}
-
-void
-copy_desc(EFI_MEMORY_DESCRIPTOR *src, EFI_MEMORY_DESCRIPTOR *dst, size_t len)
-{
-	uint8_t *srcb = (uint8_t *)src;
-	uint8_t *dstb = (uint8_t *)dst;
-	uint8_t *endb = srcb + len;
-	while (srcb < endb)
-		*dstb++ = *srcb++;
-}
-
-EFI_STATUS
-memory_get_map_length(EFI_BOOT_SERVICES *bootsvc, size_t *size)
-{
-	if (size == NULL)
-		return EFI_INVALID_PARAMETER;
-
-	EFI_STATUS status;
-	size_t key, desc_size;
-	uint32_t desc_version;
-	*size = 0;
-	status = bootsvc->GetMemoryMap(size, 0, &key, &desc_size, &desc_version);
-	if (status != EFI_BUFFER_TOO_SMALL) {
-		CHECK_EFI_STATUS_OR_RETURN(status, "Failed to get memory map size");
-	}
-	return EFI_SUCCESS;
-}
-
-EFI_STATUS
-memory_get_map(EFI_BOOT_SERVICES *bootsvc, struct memory_map *map)
-{
-	EFI_STATUS status;
-
-	if (map == NULL)
-		return EFI_INVALID_PARAMETER;
-
-	size_t needs_size = 0;
-	status = memory_get_map_length(bootsvc, &needs_size);
-	if (EFI_ERROR(status)) return status;
-
-	if (map->length < needs_size)
-		return EFI_BUFFER_TOO_SMALL;
-
-	status = bootsvc->GetMemoryMap(&map->length, map->entries, &map->key, &map->size, &map->version);
-	CHECK_EFI_STATUS_OR_RETURN(status, "Failed to load memory map");
-	return EFI_SUCCESS;
-}
-
-EFI_STATUS
-memory_dump_map(struct memory_map *map)
-{
-	if (map == NULL)
-		return EFI_INVALID_PARAMETER;
-
-	const size_t count = map->length / map->size;
-
-	con_printf(L"Memory map:\n");
-	con_printf(L"\t	Descriptor Count: %d (%d bytes)\n", count, map->length);
-	con_printf(L"\t  Descriptor Size: %d bytes\n", map->size);
-	con_printf(L"\t      Type offset: %d\n\n", offsetof(EFI_MEMORY_DESCRIPTOR, Type));
-
-	EFI_MEMORY_DESCRIPTOR *end = INCREMENT_DESC(map->entries, map->length);
-	EFI_MEMORY_DESCRIPTOR *d = map->entries;
-	while (d < end) {
-		int runtime = (d->Attribute & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME;
-		con_printf(L"%s%s ", memory_type_name(d->Type), runtime ? L"*" : L" ");
-		con_printf(L"%lx ", d->PhysicalStart);
-		con_printf(L"%lx ", d->VirtualStart);
-		con_printf(L"[%4d]\n", d->NumberOfPages);
-
-		d = INCREMENT_DESC(d, map->size);
-	}
-
-	return EFI_SUCCESS;
-}
-
-void
-memory_virtualize(EFI_RUNTIME_SERVICES *runsvc, struct memory_map *map)
-{
-	memory_mark_pointer_fixup((void **)&runsvc);
-	memory_mark_pointer_fixup((void **)&map);
-
-	// Get the pointer to the start of PML4
-	uint64_t* cr3 = 0;
-	__asm__ __volatile__ ( "mov %%cr3, %0" : "=r" (cr3) );
-
-	// PML4 is indexed with bits 39:47 of the virtual address
-	uint64_t offset = (KERNEL_VIRT_ADDRESS >> 39) & 0x1ff;
-
-	// Double map the lower half pages that are present into the higher half
-	for (unsigned i = 0; i < offset; ++i) {
-		if (cr3[i] & 0x1)
-			new_pml4[i] = new_pml4[offset+i] = cr3[i];
-		else
-			new_pml4[i] = new_pml4[offset+i] = 0;
-	}
-
-	// Write our new PML4 pointer back to CR3
-	__asm__ __volatile__ ( "mov %0, %%cr3" :: "r" (new_pml4) );
-
-	EFI_MEMORY_DESCRIPTOR *end = INCREMENT_DESC(map->entries, map->length);
-	EFI_MEMORY_DESCRIPTOR *d = map->entries;
-	while (d < end) {
-		switch (d->Type) {
-		case KERNEL_MEMTYPE:
-		case INITRD_MEMTYPE:
-		case KERNEL_DATA_MEMTYPE:
-			d->Attribute |= EFI_MEMORY_RUNTIME;
-			d->VirtualStart = d->PhysicalStart + KERNEL_VIRT_ADDRESS;
-
-		default:
-			if (d->Attribute & EFI_MEMORY_RUNTIME) {
-				d->VirtualStart = d->PhysicalStart + KERNEL_VIRT_ADDRESS;
-			}
-		}
-		d = INCREMENT_DESC(d, map->size);
-	}
-
-	runsvc->SetVirtualAddressMap(map->length, map->size, map->version, map->entries);
-}

src/boot/memory.cpp

@@ -0,0 +1,268 @@
+#include <stddef.h>
+#include <uefi/types.h>
+
+#include "kernel_memory.h"
+
+#include "console.h"
+#include "error.h"
+#include "memory.h"
+#include "paging.h"
+#include "status.h"
+
+namespace boot {
+namespace memory {
+
+using mem_entry = kernel::args::mem_entry;
+using mem_type = kernel::args::mem_type;
+
+size_t fixup_pointer_index = 0;
+void **fixup_pointers[64];
+
+static const wchar_t *memory_type_names[] = {
+	L"reserved memory type",
+	L"loader code",
+	L"loader data",
+	L"boot services code",
+	L"boot services data",
+	L"runtime services code",
+	L"runtime services data",
+	L"conventional memory",
+	L"unusable memory",
+	L"acpi reclaim memory",
+	L"acpi memory nvs",
+	L"memory mapped io",
+	L"memory mapped io port space",
+	L"pal code",
+	L"persistent memory"
+};
+
+static const wchar_t *kernel_memory_type_names[] = {
+	L"free",
+	L"pending",
+	L"acpi",
+	L"uefi_runtime",
+	L"mmio",
+	L"persistent"
+};
+
+static const wchar_t *
+memory_type_name(uefi::memory_type t)
+{
+	if (t < uefi::memory_type::max_memory_type)
+		return memory_type_names[static_cast<uint32_t>(t)];
+
+	return L"Bad Type Value";
+}
+
+static const wchar_t *
+kernel_memory_type_name(kernel::args::mem_type t)
+{
+	return kernel_memory_type_names[static_cast<uint32_t>(t)];
+}
+
+void
+update_marked_addresses(uefi::event, void *context)
+{
+	uefi::runtime_services *rs =
+		reinterpret_cast<uefi::runtime_services*>(context);
+
+	for (size_t i = 0; i < fixup_pointer_index; ++i) {
+		if (fixup_pointers[i])
+			rs->convert_pointer(0, fixup_pointers[i]);
+	}
+}
+
+void
+init_pointer_fixup(uefi::boot_services *bs, uefi::runtime_services *rs)
+{
+	status_line status(L"Initializing pointer virtualization event");
+
+	uefi::event event;
+	bs->set_mem(&fixup_pointers, sizeof(fixup_pointers), 0);
+	fixup_pointer_index = 0;
+
+	try_or_raise(
+		bs->create_event(
+			uefi::evt::signal_virtual_address_change,
+			uefi::tpl::callback,
+			(uefi::event_notify)&update_marked_addresses,
+			rs,
+			&event),
+		L"Error creating memory virtualization event");
+}
+
+void
+mark_pointer_fixup(void **p)
+{
+	fixup_pointers[fixup_pointer_index++] = p;
+}
+
+bool
+can_merge(mem_entry &prev, mem_type type, uefi::memory_descriptor *next)
+{
+	return
+		prev.type == type &&
+		prev.start + (page_size * prev.pages) == next->physical_start &&
+		prev.attr == (next->attribute & 0xffffffff);
+}
+
+void
+get_uefi_mappings(efi_mem_map *map, bool allocate, uefi::boot_services *bs)
+{
+	size_t length = 0;
+	uefi::status status = bs->get_memory_map(
+		&length, nullptr, &map->key, &map->size, &map->version);
+
+	if (status != uefi::status::buffer_too_small)
+		error::raise(status, L"Error getting memory map size");
+
+	map->length = length;
+
+	if (allocate) {
+		map->length += 10*map->size;
+
+		try_or_raise(
+			bs->allocate_pool(
+				uefi::memory_type::loader_data, map->length,
+				reinterpret_cast<void**>(&map->entries)),
+			L"Allocating space for memory map");
+
+		try_or_raise(
+			bs->get_memory_map(&map->length, map->entries, &map->key, &map->size, &map->version),
+			L"Getting UEFI memory map");
+	}
+}
+
+efi_mem_map
+build_kernel_mem_map(kernel::args::header *args, uefi::boot_services *bs)
+{
+	status_line status {L"Creating kernel memory map"};
+
+	efi_mem_map map;
+	get_uefi_mappings(&map, false, bs);
+
+	size_t map_size = map.num_entries() * sizeof(mem_entry);
+
+	kernel::args::mem_entry *kernel_map = nullptr;
+	try_or_raise(
+		bs->allocate_pages(
+			uefi::allocate_type::any_pages,
+			uefi::memory_type::loader_data,
+			bytes_to_pages(map_size),
+			reinterpret_cast<void**>(&kernel_map)),
+		L"Error allocating kernel memory map module space");
+
+	bs->set_mem(kernel_map, map_size, 0);
+	get_uefi_mappings(&map, true, bs);
+
+	size_t i = 0;
+	bool first = true;
+	for (auto desc : map) {
+		/*
+		// EFI map dump
+		console::print(L"   Range %lx (%lx) %x(%s) [%lu]\r\n",
+			desc->physical_start, desc->attribute, desc->type, memory_type_name(desc->type), desc->number_of_pages);
+		*/
+
+		mem_type type;
+		switch (desc->type) {
+			case uefi::memory_type::reserved:
+			case uefi::memory_type::unusable_memory:
+			case uefi::memory_type::acpi_memory_nvs:
+			case uefi::memory_type::pal_code:
+				continue;
+
+			case uefi::memory_type::loader_code:
+			case uefi::memory_type::boot_services_code:
+			case uefi::memory_type::boot_services_data:
+			case uefi::memory_type::conventional_memory:
+				type = mem_type::free;
+				break;
+
+			case uefi::memory_type::loader_data:
+				type = mem_type::pending;
+				break;
+
+			case uefi::memory_type::runtime_services_code:
+			case uefi::memory_type::runtime_services_data:
+				type = mem_type::uefi_runtime;
+				break;
+
+			case uefi::memory_type::acpi_reclaim_memory:
+				type = mem_type::acpi;
+				break;
+
+			case uefi::memory_type::memory_mapped_io:
+			case uefi::memory_type::memory_mapped_io_port_space:
+				type = mem_type::mmio;
+				break;
+
+			case uefi::memory_type::persistent_memory:
+				type = mem_type::persistent;
+				break;
+
+			default:
+				error::raise(
+					uefi::status::invalid_parameter,
+					L"Got an unexpected memory type from UEFI memory map");
+		}
+
+		// TODO: validate uefi's map is sorted
+		if (first) {
+			first = false;
+			kernel_map[i].start = desc->physical_start;
+			kernel_map[i].pages = desc->number_of_pages;
+			kernel_map[i].type = type;
+			kernel_map[i].attr = (desc->attribute & 0xffffffff);
+			continue;
+		}
+
+		mem_entry &prev = kernel_map[i];
+		if (can_merge(prev, type, desc)) {
+			prev.pages += desc->number_of_pages;
+		} else {
+			mem_entry &next = kernel_map[++i];
+			next.start = desc->physical_start;
+			next.pages = desc->number_of_pages;
+			next.type = type;
+			next.attr = (desc->attribute & 0xffffffff);
+		}
+	}
+
+	// Give just the actually-set entries in the header
+	args->mem_map = kernel_map;
+	args->map_count = i;
+
+	/*
+	// kernel map dump
+	for (unsigned i = 0; i < args->map_count; ++i) {
+		const kernel::args::mem_entry &e = kernel_map[i];
+		console::print(L"   Range %lx (%lx) %x(%s) [%lu]\r\n",
+			e.start, e.attr, e.type, kernel_memory_type_name(e.type), e.pages);
+	}
+	*/
+
+	return map;
+}
+
+void
+virtualize(void *pml4, efi_mem_map &map, uefi::runtime_services *rs)
+{
+	paging::add_current_mappings(reinterpret_cast<paging::page_table*>(pml4));
+
+	for (auto desc : map)
+		desc->virtual_start = desc->physical_start + ::memory::page_offset;
+
+	// Write our new PML4 pointer to CR3
+	asm volatile ( "mov %0, %%cr3" :: "r" (pml4) );
+	__sync_synchronize();
+
+	try_or_raise(
+		rs->set_virtual_address_map(
+			map.length, map.size, map.version, map.entries),
+		L"Error setting virtual address map");
+}
+
+
+} // namespace boot
+} // namespace memory

src/boot/memory.h

@@ -1,19 +1,75 @@
+/// \file memory.h
+/// Memory-related constants and functions.
 #pragma once
-#include <efi/efi.h>
+#include <uefi/boot_services.h>
+#include <uefi/runtime_services.h>
+#include <stdint.h>
+#include "kernel_args.h"
+#include "pointer_manipulation.h"
 
-struct memory_map {
-	size_t length;
-	size_t size;
-	size_t key;
-	uint32_t version;
-	EFI_MEMORY_DESCRIPTOR *entries;
+namespace boot {
+namespace memory {
+
+/// UEFI specifies that pages are always 4 KiB.
+constexpr size_t page_size = 0x1000;
+
+/// Get the number of pages needed to hold `bytes` bytes
+inline constexpr size_t bytes_to_pages(size_t bytes) {
+	return ((bytes - 1) / page_size) + 1;
+}
+
+/// \defgroup pointer_fixup
+/// Memory virtualization pointer fixup functions. Handles changing affected pointers
+/// when calling UEFI's `set_virtual_address_map` function to change the location of
+/// runtime services in virtual memory.
+/// @{
+
+/// Set up the pointer fixup UEFI events. This registers the necessary callbacks for
+/// runtime services to call when `set_virtual_address_map` is called.
+void init_pointer_fixup(uefi::boot_services *bs, uefi::runtime_services *rs);
+
+/// Mark a given pointer as needing to be updated when doing pointer fixup.
+void mark_pointer_fixup(void **p);
+
+/// @}
+
+/// Struct that represents UEFI's memory map. Contains a pointer to the map data
+/// as well as the data on how to read it.
+struct efi_mem_map
+{
+	using desc = uefi::memory_descriptor;
+	using iterator = offset_iterator<desc>;
+
+	size_t length;     ///< Total length of the map data
+	size_t size;       ///< Size of an entry in the array
+	size_t key;        ///< Key for detecting changes
+	uint32_t version;  ///< Version of the `memory_descriptor` struct
+	desc *entries;     ///< The array of UEFI descriptors
+
+	efi_mem_map() : length(0), size(0), key(0), version(0), entries(nullptr) {}
+
+	/// Get the count of entries in the array
+	inline size_t num_entries() const { return length / size; }
+
+	/// Return an iterator to the beginning of the array
+	iterator begin() { return iterator(entries, size); }
+
+	/// Return an iterator to the end of the array
+	iterator end() { return offset_ptr<desc>(entries, length); }
 };
 
-EFI_STATUS memory_init_pointer_fixup(EFI_BOOT_SERVICES *bootsvc, EFI_RUNTIME_SERVICES *runsvc);
-void memory_mark_pointer_fixup(void **p);
+/// Add the kernel's memory map as a module to the kernel args.
+/// \returns  The uefi memory map used to build the kernel map
+efi_mem_map build_kernel_mem_map(kernel::args::header *args, uefi::boot_services *bs);
 
-EFI_STATUS memory_get_map_length(EFI_BOOT_SERVICES *bootsvc, size_t *size);
-EFI_STATUS memory_get_map(EFI_BOOT_SERVICES *bootsvc, struct memory_map *map);
-EFI_STATUS memory_dump_map(struct memory_map *map);
+/// Activate the given memory mappings. Sets the given page tables live as well
+/// as informs UEFI runtime services of the new mappings.
+/// \arg pml4  The root page table for the new mappings
+/// \arg map   The UEFI memory map, used to update runtime services
+void virtualize(
+	void *pml4,
+	efi_mem_map &map,
+	uefi::runtime_services *rs);
 
-void memory_virtualize(EFI_RUNTIME_SERVICES *runsvc, struct memory_map *map);
+} // namespace boot
+} // namespace memory

src/boot/paging.cpp

@@ -0,0 +1,253 @@
+#include "kernel_memory.h"
+
+#include "console.h"
+#include "error.h"
+#include "loader.h"
+#include "memory.h"
+#include "paging.h"
+#include "pointer_manipulation.h"
+#include "status.h"
+
+namespace boot {
+namespace paging {
+
+using memory::page_size;
+using ::memory::pml4e_kernel;
+using ::memory::table_entries;
+
+// Flags: 0 0 0 1  0 0 0 0  0 0 1 1 = 0x0103
+//         IGN  |  | | | |  | | | +- Present
+//              |  | | | |  | | +--- Writeable
+//              |  | | | |  | +----- Usermode access (supervisor only)
+//              |  | | | |  +------- PWT (determining memory type for page)
+//              |  | | | +---------- PCD (determining memory type for page)
+//              |  | | +------------ Accessed flag (not accessed yet)
+//              |  | +-------------- Dirty (not dirtied yet)
+//              |  +---------------- PAT (determining memory type for page)
+//              +------------------- Global
+/// Page table entry flags for entries pointing at a page
+constexpr uint16_t page_flags = 0x103;
+
+// Flags: 0  0 0 0 1  1 0 0 0  1 0 1 1 = 0x018b
+//        |   IGN  |  | | | |  | | | +- Present
+//        |        |  | | | |  | | +--- Writeable
+//        |        |  | | | |  | +----- Supervisor only
+//        |        |  | | | |  +------- PWT (determining memory type for page)
+//        |        |  | | | +---------- PCD (determining memory type for page)
+//        |        |  | | +------------ Accessed flag (not accessed yet)
+//        |        |  | +-------------- Dirty (not dirtied yet)
+//        |        |  +---------------- Page size (1GiB page)
+//        |        +------------------- Global
+//        +---------------------------- PAT (determining memory type for page)
+/// Page table entry flags for entries pointing at a huge page
+constexpr uint16_t huge_page_flags = 0x183;
+
+// Flags: 0 0 0 0  0 0 0 0  0 0 1 1 = 0x0003
+//        IGNORED  | | | |  | | | +- Present
+//                 | | | |  | | +--- Writeable
+//                 | | | |  | +----- Usermode access (Supervisor only)
+//                 | | | |  +------- PWT (determining memory type for pdpt)
+//                 | | | +---------- PCD (determining memory type for pdpt)
+//                 | | +------------ Accessed flag (not accessed yet)
+//                 | +-------------- Ignored
+//                 +---------------- Reserved 0 (Table pointer, not page)
+/// Page table entry flags for entries pointing at another table
+constexpr uint16_t table_flags = 0x003;
+
+/// Iterator over page table entries.
+template <unsigned D = 4>
+class page_entry_iterator
+{
+public:
+	/// Constructor.
+	/// \arg virt       Virtual address this iterator is starting at
+	/// \arg pml4       Root of the page tables to iterate
+	/// \arg page_cache Pointer to pages that can be used for page tables
+	/// \arg page_count Number of pages pointed to by `page_cache`
+	page_entry_iterator(
+			uintptr_t virt,
+			page_table *pml4,
+			void *&page_cache,
+			size_t &cache_count) :
+		m_page_cache(page_cache),
+		m_cache_count(cache_count)
+	{
+		m_table[0] = pml4;
+		for (unsigned i = 0; i < D; ++i) {
+			m_index[i] = static_cast<uint16_t>((virt >> (12 + 9*(3-i))) & 0x1ff);
+			ensure_table(i);
+		}
+	}
+
+	uintptr_t vaddress() const {
+		uintptr_t address = 0;
+		for (unsigned i = 0; i < D; ++i)
+			address |= static_cast<uintptr_t>(m_index[i]) << (12 + 9*(3-i));
+		if (address & (1ull<<47)) // canonicalize the address
+			address |= (0xffffull<<48);
+		return address;
+	}
+
+	void increment()
+	{
+		for (unsigned i = D - 1; i >= 0; --i) {
+			if (++m_index[i] <= 511) {
+				for (unsigned j = i + 1; j < D; ++j)
+					ensure_table(j);
+				return;
+			}
+
+			m_index[i] = 0;
+		}
+	}
+
+	uint64_t & operator*() { return entry(D-1); }
+
+private:
+	inline uint64_t & entry(unsigned level) { return m_table[level]->entries[m_index[level]]; }
+
+	void ensure_table(unsigned level)
+	{
+		// We're only dealing with D levels of paging, and
+		// there must always be a PML4.
+		if (level < 1 || level >= D)
+			return;
+
+		// Entry in the parent that points to the table we want
+		uint64_t & parent_ent = entry(level - 1);
+
+		if (!(parent_ent & 1)) {
+			if (!m_cache_count--)
+				error::raise(uefi::status::out_of_resources, L"Page table cache empty");
+
+			page_table *table = reinterpret_cast<page_table*>(m_page_cache);
+			m_page_cache = offset_ptr<void>(m_page_cache, page_size);
+
+			parent_ent = (reinterpret_cast<uintptr_t>(table) & ~0xfffull) | table_flags;
+			m_table[level] = table;
+		} else {
+			m_table[level] = reinterpret_cast<page_table*>(parent_ent & ~0xfffull);
+		}
+	}
+
+	void *&m_page_cache;
+	size_t &m_cache_count;
+	page_table *m_table[D];
+	uint16_t m_index[D];
+};
+
+
+static void
+add_offset_mappings(page_table *pml4, void *&page_cache, size_t &num_pages)
+{
+	uintptr_t phys = 0;
+	uintptr_t virt = ::memory::page_offset; // Start of offset-mapped area
+	size_t pages = 64 * 1024; // 64 TiB of 1 GiB pages
+	constexpr size_t GiB = 0x40000000ull;
+
+	page_entry_iterator<2> iterator{
+		virt, pml4,
+		page_cache,
+		num_pages};
+
+	while (true) {
+		*iterator = phys | huge_page_flags;
+		if (--pages == 0)
+			break;
+
+		iterator.increment();
+		phys += GiB;
+	}
+}
+
+static void
+add_kernel_pds(page_table *pml4, void *&page_cache, size_t &num_pages)
+{
+	for (unsigned i = pml4e_kernel; i < table_entries; ++i) {
+		pml4->set(i, page_cache, table_flags);
+		page_cache = offset_ptr<void>(page_cache, page_size);
+		num_pages--;
+	}
+}
+
+void
+add_current_mappings(page_table *new_pml4)
+{
+	// Get the pointer to the current PML4
+	page_table *old_pml4 = 0;
+	asm volatile ( "mov %%cr3, %0" : "=r" (old_pml4) );
+
+	// Only copy mappings in the lower half
+	for (int i = 0; i < ::memory::pml4e_kernel; ++i) {
+		uint64_t entry = old_pml4->entries[i];
+		if (entry & 1)
+			new_pml4->entries[i] = entry;
+	}
+}
+
+void
+allocate_tables(kernel::args::header *args, uefi::boot_services *bs)
+{
+	status_line status(L"Allocating initial page tables");
+
+	static constexpr size_t pd_tables = 256;   // number of pages for kernelspace PDs
+	static constexpr size_t extra_tables = 49; // number of extra pages
+
+	// number of pages for kernelspace PDs + PML4
+	static constexpr size_t kernel_tables = pd_tables + 1;
+
+	static constexpr size_t tables_needed = kernel_tables + extra_tables;
+
+	void *addr = nullptr;
+	try_or_raise(
+		bs->allocate_pages(
+			uefi::allocate_type::any_pages,
+			uefi::memory_type::loader_data,
+			tables_needed,
+			&addr),
+		L"Error allocating page table pages.");
+
+	bs->set_mem(addr, tables_needed*page_size, 0);
+
+	page_table *pml4 = reinterpret_cast<page_table*>(addr);
+
+	args->pml4 = pml4;
+	args->table_count = tables_needed - 1;
+	args->page_tables = offset_ptr<void>(addr, page_size);
+
+	console::print(L"    First page (pml4) at: 0x%lx\r\n", pml4);
+
+	add_kernel_pds(pml4, args->page_tables, args->table_count);
+	add_offset_mappings(pml4, args->page_tables, args->table_count);
+
+	console::print(L"    Set up initial mappings, %d spare tables.\r\n", args->table_count);
+}
+
+void
+map_pages(
+	kernel::args::header *args,
+	uintptr_t phys, uintptr_t virt,
+	size_t size)
+{
+	paging::page_table *pml4 =
+		reinterpret_cast<paging::page_table*>(args->pml4);
+
+	size_t pages = memory::bytes_to_pages(size);
+	page_entry_iterator<4> iterator{
+		virt, pml4,
+		args->page_tables,
+		args->table_count};
+
+	while (true) {
+		*iterator = phys | page_flags;
+		if (--pages == 0)
+			break;
+
+		iterator.increment();
+		phys += page_size;
+	}
+}
+
+
+} // namespace paging
+} // namespace boot

src/boot/paging.h

@@ -0,0 +1,52 @@
+#pragma once
+/// \file paging.h
+/// Page table structure and related definitions
+#include <stdint.h>
+#include <uefi/boot_services.h>
+#include "kernel_args.h"
+
+namespace boot {
+namespace paging {
+
+/// Struct to allow easy accessing of a memory page being used as a page table.
+struct page_table
+{
+	uint64_t entries[512];
+
+	inline page_table * get(int i, uint16_t *flags = nullptr) const {
+		uint64_t entry = entries[i];
+		if ((entry & 1) == 0) return nullptr;
+		if (flags) *flags = entry & 0xfff;
+		return reinterpret_cast<page_table *>(entry & ~0xfffull);
+	}
+
+	inline void set(int i, void *p, uint16_t flags) {
+		entries[i] = reinterpret_cast<uint64_t>(p) | (flags & 0xfff);
+	}
+};
+
+/// Allocate memory to be used for initial page tables. Initial offset-mapped
+/// page tables are pre-filled. All pages are saved as a module in kernel args
+/// and kernel args' `page_table_cache` and `num_free_tables` are updated with
+/// the leftover space.
+void allocate_tables(
+	kernel::args::header *args,
+	uefi::boot_services *bs);
+
+/// Copy existing page table entries to a new page table. Does not do a deep
+/// copy - the new PML4 is updated to point to the existing next-level page
+/// tables in the current PML4.
+void add_current_mappings(page_table *new_pml4);
+
+/// Map a physical address to a virtual address in the given page tables.
+/// \arg args  The kernel args header, used for the page table cache and pml4
+/// \arg phys  The phyiscal address to map in
+/// \arg virt  The virtual address to map in
+/// \arg size  The size in bytes of the mapping 
+void map_pages(
+	kernel::args::header *args,
+	uintptr_t phys, uintptr_t virt,
+	size_t bytes);
+
+} // namespace paging
+} // namespace boot

src/boot/pointer_manipulation.h

@@ -0,0 +1,41 @@
+/// \file pointer_manipulation.h
+/// Helper functions and types for doing type-safe byte-wise pointer math.
+#pragma once
+
+namespace boot {
+
+/// Return a pointer offset from `input` by `offset` bytes.
+/// \tparam T  Cast the return value to a pointer to `T`
+/// \tparam S  The type pointed to by the `input` pointer
+template <typename T, typename S>
+inline T* offset_ptr(S* input, ptrdiff_t offset) {
+	return reinterpret_cast<T*>(reinterpret_cast<uintptr_t>(input) + offset);
+}
+
+/// Iterator for an array of `T` whose size is known at runtime
+/// \tparam T  Type of the objects in the array, whose size might not be
+///            what is returned by sizeof(T).
+template <typename T>
+class offset_iterator
+{
+public:
+	/// Constructor.
+	/// \arg t    Pointer to the first item in the array
+	/// \arg off  Offset applied to reach successive items. Default is 0,
+	///           which creates an effectively constant iterator.
+	offset_iterator(T* t, size_t off=0) : m_t(t), m_off(off) {}
+
+	T* operator++() { m_t = offset_ptr<T>(m_t, m_off); return m_t; }
+	T* operator++(int) { T* tmp = m_t; operator++(); return tmp; }
+	bool operator==(T* p) { return p == m_t; }
+
+	T* operator*() const { return m_t; }
+	operator T*() const { return m_t; }
+	T* operator->() const { return m_t; }
+
+private:
+	T* m_t;
+	size_t m_off;
+};
+
+} // namespace boot

src/boot/reloc.c

@@ -1,96 +0,0 @@
-/* reloc_x86_64.c - position independent x86_64 ELF shared object relocator
-   Copyright (C) 1999 Hewlett-Packard Co.
-	Contributed by David Mosberger <davidm@hpl.hp.com>.
-   Copyright (C) 2005 Intel Co.
-	Contributed by Fenghua Yu <fenghua.yu@intel.com>.
-
-    All rights reserved.
-
-    Redistribution and use in source and binary forms, with or without
-    modification, are permitted provided that the following conditions
-    are met:
-
-    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above
-      copyright notice, this list of conditions and the following
-      disclaimer in the documentation and/or other materials
-      provided with the distribution.
-    * Neither the name of Hewlett-Packard Co. nor the names of its
-      contributors may be used to endorse or promote products derived
-      from this software without specific prior written permission.
-
-    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-    CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
-    INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-    MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
-    BE LIABLE FOR ANYDIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
-    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
-    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
-    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-    SUCH DAMAGE.
-*/
-
-#include <efi/efi.h>
-#include <elf.h>
-
-EFI_STATUS _relocate (long ldbase, Elf64_Dyn *dyn,
-		      EFI_HANDLE image EFI_UNUSED,
-		      EFI_SYSTEM_TABLE *systab EFI_UNUSED)
-{
-	long relsz = 0, relent = 0;
-	Elf64_Rel *rel = 0;
-	unsigned long *addr;
-	int i;
-
-	for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {
-		switch (dyn[i].d_tag) {
-			case DT_RELA:
-				rel = (Elf64_Rel*)
-					((unsigned long)dyn[i].d_un.d_ptr
-					 + ldbase);
-				break;
-
-			case DT_RELASZ:
-				relsz = dyn[i].d_un.d_val;
-				break;
-
-			case DT_RELAENT:
-				relent = dyn[i].d_un.d_val;
-				break;
-
-			default:
-				break;
-		}
-	}
-
-        if (!rel && relent == 0)
-                return EFI_SUCCESS;
-
-	if (!rel || relent == 0)
-		return EFI_LOAD_ERROR;
-
-	while (relsz > 0) {
-		/* apply the relocs */
-		switch (ELF64_R_TYPE (rel->r_info)) {
-			case R_X86_64_NONE:
-				break;
-
-			case R_X86_64_RELATIVE:
-				addr = (unsigned long *)
-					(ldbase + rel->r_offset);
-				*addr += ldbase;
-				break;
-
-			default:
-				break;
-		}
-		rel = (Elf64_Rel*) ((char *) rel + relent);
-		relsz -= relent;
-	}
-	return EFI_SUCCESS;
-}

src/boot/status.cpp

@@ -0,0 +1,263 @@
+#include <uefi/types.h>
+#include <uefi/graphics.h>
+
+#include "console.h"
+#include "error.h"
+#include "kernel_args.h"
+#include "status.h"
+
+constexpr int num_boxes = 30;
+
+namespace boot {
+
+static constexpr int level_ok = 0;
+static constexpr int level_warn = 1;
+static constexpr int level_fail = 2;
+
+static const wchar_t *level_tags[] = {
+	L"  ok  ",
+	L" warn ",
+	L"failed"
+};
+
+static const uefi::attribute level_colors[] = {
+	uefi::attribute::green,
+	uefi::attribute::brown,
+	uefi::attribute::light_red
+};
+
+status *status::s_current = nullptr;
+unsigned status::s_current_type = 0;
+unsigned status_bar::s_count = 0;
+
+status_line::status_line(const wchar_t *message, const wchar_t *context) :
+	m_level(level_ok),
+	m_depth(0),
+	m_outer(nullptr)
+{
+	if (status::s_current_type == status_line::type) {
+		m_outer = static_cast<status_line*>(s_current);
+		m_depth = (m_outer ? 1 + m_outer->m_depth : 0);
+	}
+	s_current = this;
+	s_current_type = status_line::type;
+
+	auto out = console::get().m_out;
+	m_line = out->mode->cursor_row;
+
+	int indent = 2 * m_depth;
+	out->set_cursor_position(indent, m_line);
+	out->set_attribute(uefi::attribute::light_gray);
+	out->output_string(message);
+
+	if (context) {
+		out->output_string(L": ");
+		out->output_string(context);
+	}
+
+	out->output_string(L"\r\n");
+	print_status_tag();
+}
+
+status_line::~status_line()
+{
+	if (s_current != this)
+		error::raise(uefi::status::unsupported, L"Destroying non-current status_line");
+
+	if (m_outer && m_level > m_outer->m_level) {
+		m_outer->m_level = m_level;
+		m_outer->print_status_tag();
+	}
+	s_current = m_outer;
+}
+
+void
+status_line::print_status_tag()
+{
+	auto out = console::get().m_out;
+	int row = out->mode->cursor_row;
+	int col = out->mode->cursor_column;
+
+	uefi::attribute color = level_colors[m_level];
+	const wchar_t *tag = level_tags[m_level];
+
+	out->set_cursor_position(50, m_line);
+
+	out->set_attribute(uefi::attribute::light_gray);
+	out->output_string(L"[");
+	out->set_attribute(color);
+	out->output_string(tag);
+	out->set_attribute(uefi::attribute::light_gray);
+	out->output_string(L"]\r\n");
+
+	out->set_cursor_position(col, row);
+}
+
+void
+status_line::do_warn(const wchar_t *message, uefi::status status)
+{
+	auto out = console::get().m_out;
+	int row = out->mode->cursor_row;
+
+	if (m_level < level_warn) {
+		m_level = level_warn;
+		print_status_tag();
+	}
+
+	int indent = 2 + 2 * m_depth;
+	out->set_cursor_position(indent, row);
+	out->set_attribute(uefi::attribute::yellow);
+	out->output_string(message);
+
+	const wchar_t *error = error::message(status);
+	if (error) {
+		out->output_string(L": ");
+		out->output_string(error);
+	}
+
+	out->set_attribute(uefi::attribute::light_gray);
+	out->output_string(L"\r\n");
+}
+
+void
+status_line::do_fail(const wchar_t *message, uefi::status status)
+{
+	auto out = console::get().m_out;
+	int row = out->mode->cursor_row;
+
+	if (m_level < level_fail) {
+		m_level = level_fail;
+		print_status_tag();
+	}
+
+	int indent = 2 + 2 * m_depth;
+	out->set_cursor_position(indent, row);
+	out->set_attribute(uefi::attribute::red);
+	out->output_string(message);
+
+	const wchar_t *error = error::message(status);
+	if (error) {
+		out->output_string(L": ");
+		out->output_string(error);
+	}
+
+	out->set_attribute(uefi::attribute::light_gray);
+	out->output_string(L"\r\n");
+}
+
+
+
+status_bar::status_bar(kernel::args::framebuffer const &fb) :
+	m_outer(nullptr)
+{
+	m_size = (fb.vertical / num_boxes) - 1;
+	m_top = fb.vertical - m_size;
+	m_horiz = fb.horizontal;
+	m_fb = reinterpret_cast<uint32_t*>(fb.phys_addr);
+	m_type = static_cast<uint16_t>(fb.type);
+	next();
+
+	if (status::s_current_type == status_bar::type)
+		m_outer = static_cast<status_bar*>(s_current);
+	s_current = this;
+	s_current_type = status_bar::type;
+}
+
+status_bar::~status_bar()
+{
+	if (s_current != this)
+		error::raise(uefi::status::unsupported, L"Destroying non-current status_bar");
+	draw_box();
+	s_current = m_outer;
+}
+
+void
+status_bar::do_warn(const wchar_t *message, uefi::status status)
+{
+	m_status = status;
+	if (m_level < level_warn) {
+		m_level = level_warn;
+		draw_box();
+	}
+}
+
+void
+status_bar::do_fail(const wchar_t *message, uefi::status status)
+{
+	m_status = status;
+	if (m_level < level_fail) {
+		m_level = level_fail;
+		draw_box();
+	}
+}
+
+static uint32_t
+make_color(uint8_t r, uint8_t g, uint8_t b, uint16_t type)
+{
+	switch (static_cast<kernel::args::fb_type>(type)) {
+	case kernel::args::fb_type::bgr8:
+		return
+			(static_cast<uint32_t>(b) <<  0) |
+			(static_cast<uint32_t>(g) <<  8) |
+			(static_cast<uint32_t>(r) << 16);
+
+	case kernel::args::fb_type::rgb8:
+		return
+			(static_cast<uint32_t>(r) <<  0) |
+			(static_cast<uint32_t>(g) <<  8) |
+			(static_cast<uint32_t>(b) << 16);
+	
+	default:
+		return 0;
+	}
+}
+
+void
+status_bar::draw_box()
+{
+	static const uint32_t colors[] = {0x909090, 0xf0f0f0};
+	constexpr unsigned ncolors = sizeof(colors) / sizeof(uint32_t);
+
+	if (m_fb == nullptr)
+		return;
+
+	unsigned x0 = m_current * m_size;
+	unsigned x1 = x0 + m_size - 3;
+	unsigned y0 = m_top;
+	unsigned y1 = m_top + m_size - 3;
+
+	uint32_t color = 0;
+	switch (m_level) {
+	case level_ok:
+		color = colors[m_current % ncolors];
+		break;
+	case level_warn:
+		color = make_color(0xff, 0xb2, 0x34, m_type);
+		break;
+	case level_fail:
+		color = make_color(0xfb, 0x0a, 0x1e, m_type);
+		break;
+	default:
+		color = 0;
+	}
+
+	for (unsigned y = y0; y < y1; ++y)
+		for (unsigned x = x0; x < x1; ++x)
+			m_fb[y * m_horiz + x] = color;
+
+	if (m_level > level_ok) {
+		unsigned nbars = static_cast<uint64_t>(m_status) & 0xffff;
+		constexpr unsigned bar_height = 4;
+
+		for (unsigned i = 1; i <= nbars; ++i) {
+			y0 = m_top - 2 * i * bar_height;
+			y1 = y0 + bar_height;
+
+			for (unsigned y = y0; y < y1; ++y)
+				for (unsigned x = x0; x < x1; ++x)
+					m_fb[y * m_horiz + x] = color;
+		}
+	}
+}
+
+} // namespace boot

src/boot/status.h

@@ -0,0 +1,122 @@
+/// \file status.h
+/// Status message and indicator handling
+#pragma once
+
+#include <stdint.h>
+#include <uefi/types.h>
+
+namespace kernel {
+namespace args {
+	class framebuffer;
+}
+}
+
+namespace boot {
+
+// Abstract base class for status reporters.
+class status
+{
+public:
+	virtual void do_warn(const wchar_t *message, uefi::status status) = 0;
+	virtual void do_fail(const wchar_t *message, uefi::status status) = 0;
+
+	/// Set the state to warning, and print a message. If the state is already at
+	/// warning or error, the state is unchanged but the message is still printed.
+	/// \arg message  The warning message to print, if text is supported
+	/// \arg status   If set, the error or warning code that should be represented
+	/// \returns      True if there was a status handler to display the warning
+	inline static bool warn(const wchar_t *message, uefi::status status = uefi::status::success) {
+		if (!s_current) return false;
+		s_current->do_warn(message, status);
+		return true;
+	}
+
+	/// Set the state to error, and print a message. If the state is already at
+	/// error, the state is unchanged but the message is still printed.
+	/// \arg message  The error message to print, if text is supported
+	/// \arg status   The error or warning code that should be represented
+	/// \returns      True if there was a status handler to display the failure
+	inline static bool fail(const wchar_t *message, uefi::status status) {
+		if (!s_current) return false;
+		s_current->do_fail(message, status);
+		return true;
+	}
+
+protected:
+	static status *s_current;
+	static unsigned s_current_type;
+};
+
+/// Scoped status line reporter. Prints a message and an "OK" if no errors
+/// or warnings were reported before destruction, otherwise reports the
+/// error or warning.
+class status_line :
+	public status
+{
+public:
+	constexpr static unsigned type = 1;
+
+	/// Constructor.
+	/// \arg message  Description of the operation in progress
+	/// \arg context  If non-null, printed after `message` and a colon
+	status_line(const wchar_t *message, const wchar_t *context = nullptr);
+	~status_line();
+
+	virtual void do_warn(const wchar_t *message, uefi::status status) override;
+	virtual void do_fail(const wchar_t *message, uefi::status status) override;
+
+private:
+	void print_status_tag();
+
+	size_t m_line;
+	int m_level;
+	int m_depth;
+
+	status_line *m_outer;
+};
+
+/// Scoped status bar reporter. Draws a row of boxes along the bottom of
+/// the screen, turning one red if there's an error in that step.
+class status_bar :
+	public status
+{
+public:
+	constexpr static unsigned type = 2;
+
+	using framebuffer = kernel::args::framebuffer;
+
+	/// Constructor.
+	/// \arg fb  The framebuffer descriptor to draw to
+	status_bar(kernel::args::framebuffer const &fb);
+	~status_bar();
+
+	virtual void do_warn(const wchar_t *message, uefi::status status) override;
+	virtual void do_fail(const wchar_t *message, uefi::status status) override;
+
+	inline void next() {
+		m_current = s_count++;
+		m_level = 0;
+		m_status = uefi::status::success;
+		draw_box();
+	}
+
+private:
+	void draw_box();
+
+	uint32_t *m_fb;
+	uint32_t m_size;
+	uint32_t m_top;
+	uint32_t m_horiz;
+
+	int m_level;
+	uefi::status m_status;
+
+	uint16_t m_type;
+	uint16_t m_current;
+
+	status_bar *m_outer;
+
+	static unsigned s_count;
+};
+
+} // namespace boot

src/boot/support.cpp

@@ -0,0 +1,39 @@
+#include <stdint.h>
+
+#include "error.h"
+
+extern "C" {
+
+/// Basic memcpy() implementation for clang. Clang requires freestanding code
+/// implement memcpy(), as it may emit references to it. This basic memcpy is
+/// not the most efficient, but will get linked if no other memcpy exists.
+__attribute__ ((__weak__))
+void *memcpy(void *dest, const void *src, size_t n)
+{
+	uint8_t *cdest = reinterpret_cast<uint8_t*>(dest);
+	const uint8_t *csrc = reinterpret_cast<const uint8_t*>(src);
+	for (size_t i = 0; i < n; ++i)
+		cdest[i] = csrc[i];
+	return dest;
+}
+
+/// Basic memset() implementation for clang. Clang requires freestanding code
+/// implement memset(), as it may emit references to it. This basic memset is
+/// not the most efficient, but will get linked if no other memcpy exists.
+__attribute__ ((__weak__))
+void *memset(void *dest, int c, size_t n)
+{
+	uint8_t *cdest = reinterpret_cast<uint8_t*>(dest);
+	for (size_t i = 0; i < n; ++i)
+		cdest[i] = static_cast<uint8_t>(c);
+	return dest;
+}
+
+int _purecall()
+{
+	::boot::error::raise(uefi::status::unsupported, L"Pure virtual call");
+}
+
+} // extern "C"
+
+void operator delete (void *) {}

src/boot/types.h

@@ -0,0 +1,13 @@
+/// \file types.h
+/// Definitions of shared types used throughout the bootloader
+#pragma once
+
+namespace boot {
+
+struct buffer
+{
+	size_t size;
+	void *data;
+};
+
+} // namespace boot

src/boot/utility.c

@@ -1,71 +0,0 @@
-#include "utility.h"
-
-struct error_code_desc {
-	EFI_STATUS code;
-	CHAR16 *name;
-};
-
-// Based off the gnu-efi table
-struct error_code_desc error_table[] = {
-	{ EFI_SUCCESS,               L"Success" },
-	{ EFI_LOAD_ERROR,            L"Load Error" },
-	{ EFI_INVALID_PARAMETER,     L"Invalid Parameter" },
-	{ EFI_UNSUPPORTED,           L"Unsupported" },
-	{ EFI_BAD_BUFFER_SIZE,       L"Bad Buffer Size" },
-	{ EFI_BUFFER_TOO_SMALL,      L"Buffer Too Small" },
-	{ EFI_NOT_READY,             L"Not Ready" },
-	{ EFI_DEVICE_ERROR,          L"Device Error" },
-	{ EFI_WRITE_PROTECTED,       L"Write Protected" },
-	{ EFI_OUT_OF_RESOURCES,      L"Out of Resources" },
-	{ EFI_VOLUME_CORRUPTED,      L"Volume Corrupt" },
-	{ EFI_VOLUME_FULL,           L"Volume Full" },
-	{ EFI_NO_MEDIA,              L"No Media" },
-	{ EFI_MEDIA_CHANGED,         L"Media changed" },
-	{ EFI_NOT_FOUND,             L"Not Found" },
-	{ EFI_ACCESS_DENIED,         L"Access Denied" },
-	{ EFI_NO_RESPONSE,           L"No Response" },
-	{ EFI_NO_MAPPING,            L"No mapping" },
-	{ EFI_TIMEOUT,               L"Time out" },
-	{ EFI_NOT_STARTED,           L"Not started" },
-	{ EFI_ALREADY_STARTED,       L"Already started" },
-	{ EFI_ABORTED,               L"Aborted" },
-	{ EFI_ICMP_ERROR,            L"ICMP Error" },
-	{ EFI_TFTP_ERROR,            L"TFTP Error" },
-	{ EFI_PROTOCOL_ERROR,        L"Protocol Error" },
-	{ EFI_INCOMPATIBLE_VERSION,  L"Incompatible Version" },
-	{ EFI_SECURITY_VIOLATION,    L"Security Policy Violation" },
-	{ EFI_CRC_ERROR,             L"CRC Error" },
-	{ EFI_END_OF_MEDIA,          L"End of Media" },
-	{ EFI_END_OF_FILE,           L"End of File" },
-	{ EFI_INVALID_LANGUAGE,      L"Invalid Languages" },
-	{ EFI_COMPROMISED_DATA,      L"Compromised Data" },
-
-	{ EFI_WARN_UNKOWN_GLYPH,     L"Warning Unknown Glyph" },
-	{ EFI_WARN_DELETE_FAILURE,   L"Warning Delete Failure" },
-	{ EFI_WARN_WRITE_FAILURE,    L"Warning Write Failure" },
-	{ EFI_WARN_BUFFER_TOO_SMALL, L"Warning Buffer Too Small" },
-	{ 0, NULL }
-};
-
-const CHAR16 *
-util_error_message(EFI_STATUS status)
-{
-	int32_t i = -1;
-	while (error_table[++i].name != NULL) {
-		if (error_table[i].code == status) return error_table[i].name;
-	}
-
-	if (EFI_ERROR(status))
-		return L"Unknown Error";
-	else
-		return L"Unknown Warning";
-}
-
-size_t
-wstrlen(const CHAR16 *s)
-{
-	size_t count = 0;
-	while (s && *s++) count++;
-	return count;
-}
-

src/boot/utility.h

@@ -1,40 +0,0 @@
-#include <stddef.h>
-#include <efi/efi.h>
-
-#include "console.h"
-
-#define UNUSED __attribute__((unused))
-
-size_t wstrlen(const CHAR16 *s);
-const CHAR16 *util_error_message(EFI_STATUS status);
-
-#define CHECK_EFI_STATUS_OR_RETURN(s, msg, ...) \
-	if (EFI_ERROR((s))) { \
-		con_printf(L"ERROR: " msg L": %s\r\n", ##__VA_ARGS__, util_error_message(s)); \
-		return (s); \
-	}
-
-#define CHECK_EFI_STATUS_OR_FAIL(s) \
-	if (EFI_ERROR((s))) { \
-		con_status_fail(util_error_message(s)); \
-		while (1) __asm__("hlt"); \
-	}
-
-#define CHECK_EFI_STATUS_OR_ASSERT(s, d) \
-	if (EFI_ERROR((s))) { \
-		__asm__ __volatile__( \
-			"movq %0, %%r8;" \
-			"movq %1, %%r9;" \
-			"movq %2, %%r10;" \
-			"movq $0, %%rdx;" \
-			"divq %%rdx;" \
-			: \
-			: "r"((uint64_t)s), "r"((uint64_t)d), "r"((uint64_t)__LINE__) \
-			: "rax", "rdx", "r8", "r9", "r10"); \
-	}
-
-#ifdef BOOTLOADER_DEBUG
-#define con_debug(...) con_printf(L"DEBUG: " __VA_ARGS__)
-#else
-#define con_debug(...)
-#endif

src/drivers/fb/default_font.inc

@@ -0,0 +1,390 @@
+  0x72, 0xb5, 0x4a, 0x86, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00,
+  0x10, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x7e, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x7e, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa,
+  0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x38, 0x44, 0x44, 0x44, 0x38, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0xf8,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0xf8, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x08, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x0f,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0xff, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x0f, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0xf8, 0x08, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0xff,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0xff, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1c,
+  0x22, 0x20, 0x20, 0xf8, 0x20, 0x20, 0x72, 0x8c, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10,
+  0x10, 0x10, 0x10, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x24, 0x24, 0x24, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x24, 0x7e, 0x24, 0x24,
+  0x24, 0x7e, 0x24, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x08,
+  0x1e, 0x20, 0x20, 0x1c, 0x02, 0x02, 0x3c, 0x08, 0x08, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x30, 0x49, 0x4a, 0x34, 0x08, 0x16, 0x29, 0x49, 0x06,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x48, 0x48, 0x48, 0x30, 0x31,
+  0x49, 0x46, 0x46, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10,
+  0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x04, 0x08, 0x08, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x08,
+  0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x20, 0x10, 0x10, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x10, 0x10, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x24, 0x18, 0x7e, 0x18, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x08, 0x7f, 0x08, 0x08, 0x08, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x18, 0x18, 0x08, 0x08, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, 0x04, 0x04, 0x08, 0x08,
+  0x10, 0x10, 0x20, 0x20, 0x40, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
+  0x42, 0x46, 0x4a, 0x52, 0x62, 0x42, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x08, 0x18, 0x28, 0x08, 0x08, 0x08, 0x08, 0x08, 0x3e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x42, 0x02, 0x02, 0x04,
+  0x08, 0x10, 0x20, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e,
+  0x04, 0x08, 0x1c, 0x02, 0x02, 0x02, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x04, 0x0c, 0x14, 0x24, 0x44, 0x7e, 0x04, 0x04, 0x04,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x40, 0x40, 0x7c, 0x02,
+  0x02, 0x02, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1c,
+  0x20, 0x40, 0x40, 0x7c, 0x42, 0x42, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x7e, 0x02, 0x04, 0x04, 0x08, 0x08, 0x10, 0x10, 0x10,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x42, 0x42, 0x42, 0x3c,
+  0x42, 0x42, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
+  0x42, 0x42, 0x42, 0x3e, 0x02, 0x02, 0x04, 0x38, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x18, 0x18,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00,
+  0x00, 0x00, 0x18, 0x18, 0x08, 0x08, 0x10, 0x00, 0x00, 0x00, 0x00, 0x04,
+  0x08, 0x10, 0x20, 0x40, 0x20, 0x10, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x7e, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x10, 0x08, 0x04, 0x02,
+  0x04, 0x08, 0x10, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x42,
+  0x02, 0x04, 0x08, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x1c, 0x22, 0x41, 0x4f, 0x51, 0x51, 0x51, 0x53, 0x4d, 0x40,
+  0x20, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x24, 0x42, 0x42, 0x42,
+  0x7e, 0x42, 0x42, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7c,
+  0x42, 0x42, 0x42, 0x7c, 0x42, 0x42, 0x42, 0x7c, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x1e, 0x20, 0x40, 0x40, 0x40, 0x40, 0x40, 0x20, 0x1e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x44, 0x42, 0x42, 0x42,
+  0x42, 0x42, 0x44, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e,
+  0x40, 0x40, 0x40, 0x7c, 0x40, 0x40, 0x40, 0x7e, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x7e, 0x40, 0x40, 0x40, 0x7c, 0x40, 0x40, 0x40, 0x40,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x20, 0x40, 0x40, 0x46,
+  0x42, 0x42, 0x22, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42,
+  0x42, 0x42, 0x42, 0x7e, 0x42, 0x42, 0x42, 0x42, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x3e, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x3e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, 0x02, 0x02, 0x02,
+  0x02, 0x42, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42,
+  0x44, 0x48, 0x50, 0x60, 0x50, 0x48, 0x44, 0x42, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x7e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x41, 0x63, 0x55, 0x49, 0x49,
+  0x41, 0x41, 0x41, 0x41, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42,
+  0x62, 0x52, 0x4a, 0x46, 0x42, 0x42, 0x42, 0x42, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x3c, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3c,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7c, 0x42, 0x42, 0x42, 0x7c,
+  0x40, 0x40, 0x40, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
+  0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3c, 0x04, 0x02, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x7c, 0x42, 0x42, 0x42, 0x7c, 0x48, 0x44, 0x42, 0x42,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3e, 0x40, 0x40, 0x20, 0x18,
+  0x04, 0x02, 0x02, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3c,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42, 0x42, 0x42, 0x42, 0x42,
+  0x24, 0x24, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x41,
+  0x41, 0x41, 0x41, 0x49, 0x49, 0x49, 0x55, 0x63, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x41, 0x41, 0x22, 0x14, 0x08, 0x14, 0x22, 0x41, 0x41,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x41, 0x41, 0x22, 0x14, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e,
+  0x04, 0x08, 0x08, 0x10, 0x10, 0x20, 0x20, 0x7e, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x1e, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+  0x10, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x40, 0x40, 0x20, 0x20, 0x10, 0x10,
+  0x08, 0x08, 0x04, 0x04, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x78, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x78, 0x00, 0x00,
+  0x00, 0x00, 0x10, 0x28, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x20, 0x10, 0x08,
+  0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x02, 0x02, 0x3e, 0x42, 0x42, 0x3e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x40, 0x40, 0x7c, 0x42, 0x42,
+  0x42, 0x42, 0x42, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x3c, 0x42, 0x40, 0x40, 0x40, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x02, 0x02, 0x02, 0x3e, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x42, 0x42,
+  0x7e, 0x40, 0x40, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x10,
+  0x10, 0x7e, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x3e, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3e,
+  0x02, 0x02, 0x3c, 0x00, 0x00, 0x00, 0x40, 0x40, 0x40, 0x7c, 0x42, 0x42,
+  0x42, 0x42, 0x42, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x08,
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+  0x24, 0x24, 0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3c,
+  0x00, 0x00, 0x00, 0x00, 0x04, 0x08, 0x00, 0x41, 0x41, 0x22, 0x14, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40,
+  0x40, 0x7c, 0x42, 0x42, 0x42, 0x7c, 0x40, 0x40, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x3c, 0x42, 0x44, 0x4c, 0x42, 0x42, 0x42, 0x44, 0x58,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x10, 0x00, 0x3c, 0x02, 0x02,
+  0x3e, 0x42, 0x42, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x08,
+  0x00, 0x3c, 0x02, 0x02, 0x3e, 0x42, 0x42, 0x3e, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x18, 0x24, 0x00, 0x00, 0x3c, 0x02, 0x02, 0x3e, 0x42, 0x42, 0x3e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x32, 0x4c, 0x00, 0x00, 0x3c, 0x02, 0x02,
+  0x3e, 0x42, 0x42, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x24,
+  0x00, 0x3c, 0x02, 0x02, 0x3e, 0x42, 0x42, 0x3e, 0x00, 0x00, 0x00, 0x00,
+  0x18, 0x24, 0x24, 0x18, 0x00, 0x3c, 0x02, 0x02, 0x3e, 0x42, 0x42, 0x3e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x09, 0x39,
+  0x4f, 0x48, 0x48, 0x37, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x3c, 0x42, 0x40, 0x40, 0x40, 0x42, 0x3c, 0x08, 0x08, 0x30, 0x00,
+  0x00, 0x00, 0x20, 0x10, 0x00, 0x3c, 0x42, 0x42, 0x7e, 0x40, 0x40, 0x3e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x08, 0x00, 0x3c, 0x42, 0x42,
+  0x7e, 0x40, 0x40, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x24, 0x00,
+  0x00, 0x3c, 0x42, 0x42, 0x7e, 0x40, 0x40, 0x3e, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x24, 0x24, 0x00, 0x3c, 0x42, 0x42, 0x7e, 0x40, 0x40, 0x3e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x08, 0x00, 0x38, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x08,
+  0x00, 0x38, 0x08, 0x08, 0x08, 0x08, 0x08, 0x3e, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x18, 0x24, 0x00, 0x00, 0x38, 0x08, 0x08, 0x08, 0x08, 0x08, 0x3e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x24, 0x00, 0x38, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x06, 0x1a,
+  0x01, 0x1d, 0x23, 0x41, 0x41, 0x41, 0x22, 0x1c, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x32, 0x4c, 0x00, 0x00, 0x7c, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x08, 0x00, 0x3c, 0x42, 0x42,
+  0x42, 0x42, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x08,
+  0x00, 0x3c, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x18, 0x24, 0x00, 0x00, 0x3c, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3c,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x32, 0x4c, 0x00, 0x00, 0x3c, 0x42, 0x42,
+  0x42, 0x42, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x24,
+  0x00, 0x3c, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x18, 0x18,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x3c, 0x46, 0x4a,
+  0x52, 0x62, 0x42, 0x3c, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x10,
+  0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3e, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x04, 0x08, 0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3e,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x24, 0x00, 0x00, 0x42, 0x42, 0x42,
+  0x42, 0x42, 0x42, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x24,
+  0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3e, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x04, 0x08, 0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3e,
+  0x02, 0x02, 0x3c, 0x00, 0x00, 0x00, 0x40, 0x40, 0x40, 0x5c, 0x62, 0x41,
+  0x41, 0x41, 0x62, 0x5c, 0x40, 0x40, 0x40, 0x00, 0x00, 0x00, 0x24, 0x24,
+  0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3e, 0x02, 0x02, 0x3c, 0x00,
+  0xff, 0xff, 0xe2, 0x96, 0x92, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc2, 0xb0,
+  0xff, 0xff, 0xff, 0xff, 0xe2, 0x94, 0x98, 0xff, 0xe2, 0x94, 0x90, 0xff,
+  0xe2, 0x94, 0x8c, 0xff, 0xe2, 0x94, 0x94, 0xff, 0xe2, 0x94, 0xbc, 0xff,
+  0xff, 0xff, 0xe2, 0x94, 0x80, 0xff, 0xff, 0xff, 0xe2, 0x94, 0x9c, 0xff,
+  0xe2, 0x94, 0xa4, 0xff, 0xe2, 0x94, 0xb4, 0xff, 0xe2, 0x94, 0xac, 0xff,
+  0xe2, 0x94, 0x82, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc2, 0xa3, 0xff, 0xff,
+  0x20, 0xff, 0x21, 0xff, 0x22, 0xff, 0x23, 0xff, 0x24, 0xff, 0x25, 0xff,
+  0x26, 0xff, 0x27, 0xff, 0x28, 0xff, 0x29, 0xff, 0x2a, 0xff, 0x2b, 0xff,
+  0x2c, 0xff, 0x2d, 0xff, 0x2e, 0xff, 0x2f, 0xff, 0x30, 0xff, 0x31, 0xff,
+  0x32, 0xff, 0x33, 0xff, 0x34, 0xff, 0x35, 0xff, 0x36, 0xff, 0x37, 0xff,
+  0x38, 0xff, 0x39, 0xff, 0x3a, 0xff, 0x3b, 0xff, 0x3c, 0xff, 0x3d, 0xff,
+  0x3e, 0xff, 0x3f, 0xff, 0x40, 0xff, 0x41, 0xff, 0x42, 0xff, 0x43, 0xff,
+  0x44, 0xff, 0x45, 0xff, 0x46, 0xff, 0x47, 0xff, 0x48, 0xff, 0x49, 0xff,
+  0x4a, 0xff, 0x4b, 0xff, 0x4c, 0xff, 0x4d, 0xff, 0x4e, 0xff, 0x4f, 0xff,
+  0x50, 0xff, 0x51, 0xff, 0x52, 0xff, 0x53, 0xff, 0x54, 0xff, 0x55, 0xff,
+  0x56, 0xff, 0x57, 0xff, 0x58, 0xff, 0x59, 0xff, 0x5a, 0xff, 0x5b, 0xff,
+  0x5c, 0xff, 0x5d, 0xff, 0x5e, 0xff, 0x5f, 0xff, 0x60, 0xff, 0x61, 0xff,
+  0x62, 0xff, 0x63, 0xff, 0x64, 0xff, 0x65, 0xff, 0x66, 0xff, 0x67, 0xff,
+  0x68, 0xff, 0x69, 0xff, 0x6a, 0xff, 0x6b, 0xff, 0x6c, 0xff, 0x6d, 0xff,
+  0x6e, 0xff, 0x6f, 0xff, 0x70, 0xff, 0x71, 0xff, 0x72, 0xff, 0x73, 0xff,
+  0x74, 0xff, 0x75, 0xff, 0x76, 0xff, 0x77, 0xff, 0x78, 0xff, 0x79, 0xff,
+  0x7a, 0xff, 0x7b, 0xff, 0x7c, 0xff, 0x7d, 0xff, 0x7e, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc2, 0xa0, 0xff, 0xc2, 0xa1,
+  0xff, 0xc2, 0xa2, 0xff, 0xc2, 0xa3, 0xff, 0xc2, 0xa4, 0xff, 0xc2, 0xa5,
+  0xff, 0xc2, 0xa6, 0xff, 0xff, 0xc2, 0xa8, 0xff, 0xc2, 0xa9, 0xff, 0xff,
+  0xc2, 0xab, 0xff, 0xff, 0xc2, 0xad, 0xff, 0xff, 0xff, 0xc2, 0xb0, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc2, 0xb8, 0xff, 0xff, 0xff,
+  0xc2, 0xbb, 0xff, 0xff, 0xff, 0xff, 0xc2, 0xbf, 0xff, 0xc3, 0x80, 0xff,
+  0xc3, 0x81, 0xff, 0xc3, 0x82, 0xff, 0xc3, 0x83, 0xff, 0xc3, 0x84, 0xff,
+  0xc3, 0x85, 0xff, 0xc3, 0x86, 0xff, 0xc3, 0x87, 0xff, 0xc3, 0x88, 0xff,
+  0xc3, 0x89, 0xff, 0xc3, 0x8a, 0xff, 0xc3, 0x8b, 0xff, 0xc3, 0x8c, 0xff,
+  0xc3, 0x8d, 0xff, 0xc3, 0x8e, 0xff, 0xc3, 0x8f, 0xff, 0xc3, 0x90, 0xff,
+  0xc3, 0x91, 0xff, 0xc3, 0x92, 0xff, 0xc3, 0x93, 0xff, 0xc3, 0x94, 0xff,
+  0xc3, 0x95, 0xff, 0xc3, 0x96, 0xff, 0xc3, 0x97, 0xff, 0xc3, 0x98, 0xff,
+  0xc3, 0x99, 0xff, 0xc3, 0x9a, 0xff, 0xc3, 0x9b, 0xff, 0xc3, 0x9c, 0xff,
+  0xc3, 0x9d, 0xff, 0xc3, 0x9e, 0xff, 0xc3, 0x9f, 0xff, 0xc3, 0xa0, 0xff,
+  0xc3, 0xa1, 0xff, 0xc3, 0xa2, 0xff, 0xc3, 0xa3, 0xff, 0xc3, 0xa4, 0xff,
+  0xc3, 0xa5, 0xff, 0xc3, 0xa6, 0xff, 0xc3, 0xa7, 0xff, 0xc3, 0xa8, 0xff,
+  0xc3, 0xa9, 0xff, 0xc3, 0xaa, 0xff, 0xc3, 0xab, 0xff, 0xc3, 0xac, 0xff,
+  0xc3, 0xad, 0xff, 0xc3, 0xae, 0xff, 0xc3, 0xaf, 0xff, 0xc3, 0xb0, 0xff,
+  0xc3, 0xb1, 0xff, 0xc3, 0xb2, 0xff, 0xc3, 0xb3, 0xff, 0xc3, 0xb4, 0xff,
+  0xc3, 0xb5, 0xff, 0xc3, 0xb6, 0xff, 0xc3, 0xb7, 0xff, 0xc3, 0xb8, 0xff,
+  0xc3, 0xb9, 0xff, 0xc3, 0xba, 0xff, 0xc3, 0xbb, 0xff, 0xc3, 0xbc, 0xff,
+  0xc3, 0xbd, 0xff, 0xc3, 0xbe, 0xff, 0xc3, 0xbf, 0xff

src/drivers/fb/font.cpp

@@ -1,6 +1,7 @@
-#include "kutil/assert.h"
+#include <assert.h>
 #include "font.h"
 
+
 /* PSF2 header format
  * Taken from the Linux KBD documentation
  * http://www.win.tue.nl/~aeb/linux/kbd/font-formats-1.html
@@ -27,43 +28,51 @@ struct psf2_header {
 	uint32_t height, width; // max dimensions of glyphs
 };
 
+const uint8_t default_font[] = {
+// xxd -i < font_file.psf > default_font.inc
+#include "default_font.inc"
+};
 
 font::font(void const *data) :
-	m_size(0, 0),
-	m_count(0),
-	m_data(nullptr)
+	m_sizex {0},
+	m_sizey {0},
+	m_count {0},
+	m_data {nullptr}
 {
+	if (!data)
+		data = default_font;
+
 	psf2_header const *psf2 = static_cast<psf2_header const *>(data);
 	for (int i = 0; i < sizeof(magic); ++i) {
-		kassert(psf2->magic[i] == magic[i], "Bad font magic number.");
+		assert(psf2->magic[i] == magic[i] && "Bad font magic number.");
 	}
 
 	m_data = static_cast<uint8_t const *>(data) + psf2->header_size;
-	m_size.x = psf2->width;
-	m_size.y = psf2->height;
+	m_sizex = psf2->width;
+	m_sizey = psf2->height;
 	m_count = psf2->length;
 }
 
 void
 font::draw_glyph(
-		screen *s,
+		screen &s,
 		uint32_t glyph,
 		screen::pixel_t fg,
 		screen::pixel_t bg,
 		unsigned x,
 		unsigned y) const
 {
-	unsigned bwidth = (m_size.x+7)/8;
+	unsigned bwidth = (m_sizex+7)/8;
 	uint8_t const *data = m_data + (glyph * glyph_bytes());
 
-	for (int dy = 0; dy < m_size.y; ++dy) {
+	for (int dy = 0; dy < m_sizey; ++dy) {
 		for (int dx = 0; dx < bwidth; ++dx) {
 			uint8_t byte = data[dy * bwidth + dx];
 			for (int i = 0; i < 8; ++i) {
-				if (dx*8 + i >= m_size.x) continue;
+				if (dx*8 + i >= m_sizex) break;
 				const uint8_t mask = 1 << (7-i);
 				uint32_t c = (byte & mask) ? fg : bg;
-				s->draw_pixel(x + dx*8 + i, y + dy, c);
+				s.draw_pixel(x + dx*8 + i, y + dy, c);
 			}
 		}
 	}

src/drivers/fb/font.h

@@ -0,0 +1,33 @@
+#pragma once
+#include <stdint.h>
+
+#include "screen.h"
+
+class font
+{
+public:
+	/// Constructor.
+	/// \arg data  The font data to load. If null, will load the default
+	///            built-in font.
+	font(void const *data = nullptr);
+
+	unsigned glyph_bytes() const { return m_sizey * ((m_sizex + 7) / 8); }
+	unsigned count() const { return m_count; }
+	unsigned width() const { return m_sizex; }
+	unsigned height() const { return m_sizey; }
+	bool valid() const { return m_count > 0; }
+
+	void draw_glyph(
+			screen &s,
+			uint32_t glyph,
+			screen::pixel_t fg,
+			screen::pixel_t bg,
+			unsigned x,
+			unsigned y) const;
+
+private:
+	unsigned m_sizex, m_sizey;
+	unsigned m_count;
+	uint8_t const *m_data;
+};
+

src/drivers/fb/main.cpp

@@ -0,0 +1,105 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "j6/init.h"
+#include "j6/errors.h"
+#include "j6/signals.h"
+#include "j6/types.h"
+
+#include <j6libc/syscalls.h>
+
+#include "font.h"
+#include "screen.h"
+#include "scrollback.h"
+
+extern "C" {
+	int main(int, const char **);
+	void _get_init(size_t *initc, struct j6_init_value **initv);
+}
+
+extern j6_handle_t __handle_sys;
+
+struct entry
+{
+	uint8_t bytes;
+	uint8_t area;
+	uint8_t severity;
+	uint8_t sequence;
+	char message[0];
+};
+
+int
+main(int argc, const char **argv)
+{
+	_syscall_system_log("fb driver starting");
+
+	size_t initc = 0;
+	j6_init_value *initv = nullptr;
+	_get_init(&initc, &initv);
+
+	j6_init_framebuffer *fb = nullptr;
+	for (unsigned i = 0; i < initc; ++i) {
+		if (initv[i].type == j6_init_desc_framebuffer) {
+			fb = reinterpret_cast<j6_init_framebuffer*>(initv[i].value);
+			break;
+		}
+	}
+
+	if (!fb || fb->addr == nullptr) {
+		_syscall_system_log("fb driver didn't find a framebuffer, exiting");
+		return 1;
+	}
+
+	const screen::pixel_order order = (fb->flags & 1) ?
+		screen::pixel_order::bgr8 : screen::pixel_order::rgb8;
+
+	screen scr(fb->addr, fb->horizontal, fb->vertical, order);
+	font fnt;
+
+	screen::pixel_t fg = scr.color(0xb0, 0xb0, 0xb0);
+	screen::pixel_t bg = scr.color(49, 79, 128);
+	scr.fill(bg);
+	scr.update();
+
+	constexpr int margin = 2;
+	const unsigned xstride = (margin + fnt.width());
+	const unsigned ystride = (margin + fnt.height());
+	const unsigned rows = (scr.height() - margin) / ystride;
+	const unsigned cols = (scr.width() - margin) / xstride;
+
+	scrollback scroll(rows, cols);
+
+	int pending = 0;
+	constexpr int pending_threshold = 10;
+
+	char message_buffer[256];
+	while (true) {
+		size_t size = sizeof(message_buffer);
+		_syscall_system_get_log(__handle_sys, message_buffer, &size);
+		if (size != 0) {
+			entry *e = reinterpret_cast<entry*>(&message_buffer);
+
+			size_t eom = e->bytes - sizeof(entry);
+			e->message[eom] = 0;
+
+			scroll.add_line(e->message, eom);
+			if (++pending > pending_threshold) {
+				scroll.render(scr, fnt);
+				scr.update();
+				pending = 0;
+			}
+		} else {
+			if (pending) {
+				scroll.render(scr, fnt);
+				scr.update();
+				pending = 0;
+			}
+		}
+	}
+
+
+	_syscall_system_log("fb driver done, exiting");
+	return 0;
+}
+

src/drivers/fb/screen.cpp

@@ -0,0 +1,50 @@
+#include <stdlib.h>
+#include <string.h>
+#include "screen.h"
+
+screen::screen(void *addr, unsigned hres, unsigned vres, pixel_order order) :
+	m_fb(static_cast<pixel_t *>(addr)),
+	m_order(order),
+	m_resx(hres),
+	m_resy(vres)
+{
+	m_back = reinterpret_cast<pixel_t*>(malloc(hres*vres*sizeof(pixel_t)));
+}
+
+screen::pixel_t
+screen::color(uint8_t r, uint8_t g, uint8_t b) const
+{
+	switch (m_order) {
+	case pixel_order::bgr8:
+		return
+			(static_cast<uint32_t>(b) <<  0) |
+			(static_cast<uint32_t>(g) <<  8) |
+			(static_cast<uint32_t>(r) << 16);
+
+	case pixel_order::rgb8:
+		return
+			(static_cast<uint32_t>(r) <<  0) |
+			(static_cast<uint32_t>(g) <<  8) |
+			(static_cast<uint32_t>(b) << 16);
+	}
+}
+
+void
+screen::fill(pixel_t color)
+{
+	const size_t len = m_resx * m_resy;
+	for (size_t i = 0; i < len; ++i)
+		m_back[i] = color;
+}
+
+void
+screen::draw_pixel(unsigned x, unsigned y, pixel_t color)
+{
+	m_back[x + y * m_resx] = color;
+}
+
+void
+screen::update()
+{
+	memcpy(m_fb, m_back, m_resx*m_resy*sizeof(pixel_t));
+}

src/drivers/fb/screen.h

@@ -0,0 +1,30 @@
+#pragma once
+#include <stddef.h>
+#include <stdint.h>
+
+class screen
+{
+public:
+	using pixel_t = uint32_t;
+
+	enum class pixel_order : uint8_t { bgr8, rgb8, };
+
+	screen(void *addr, unsigned hres, unsigned vres, pixel_order order);
+
+	unsigned width() const { return m_resx; }
+	unsigned height() const { return m_resy; }
+
+	pixel_t color(uint8_t r, uint8_t g, uint8_t b) const;
+
+	void fill(pixel_t color);
+	void draw_pixel(unsigned x, unsigned y, pixel_t color);
+
+	void update();
+
+private:
+	pixel_t *m_fb, *m_back;
+	pixel_order m_order;
+	unsigned m_resx, m_resy;
+
+	screen() = delete;
+};

src/drivers/fb/scrollback.cpp

@@ -0,0 +1,56 @@
+#include <stdlib.h>
+#include <string.h>
+
+#include "font.h"
+#include "screen.h"
+#include "scrollback.h"
+
+scrollback::scrollback(unsigned lines, unsigned cols, unsigned margin) :
+	m_rows {lines},
+	m_cols {cols},
+	m_count {0},
+	m_margin {margin}
+{
+	m_data = reinterpret_cast<char*>(malloc(lines*cols));
+	m_lines = reinterpret_cast<char**>(malloc(lines*sizeof(char*)));
+	for (unsigned i = 0; i < lines; ++i)
+		m_lines[i] = &m_data[i*cols];
+
+	memset(m_data, ' ', lines*cols);
+}
+
+void
+scrollback::add_line(const char *line, size_t len)
+{
+	unsigned i = m_count++ % m_rows;
+
+	if (len > m_cols)
+		len = m_cols;
+
+	memcpy(m_lines[i], line, len);
+	if (len < m_cols)
+		memset(m_lines[i]+len, ' ', m_cols - len);
+}
+
+char *
+scrollback::get_line(unsigned i)
+{
+	return m_lines[(i+m_count)%m_rows];
+}
+
+void
+scrollback::render(screen &scr, font &fnt)
+{
+	screen::pixel_t fg = scr.color(0xb0, 0xb0, 0xb0);
+	screen::pixel_t bg = scr.color(49, 79, 128);
+
+	const unsigned xstride = (m_margin + fnt.width());
+	const unsigned ystride = (m_margin + fnt.height());
+
+	for (unsigned y = 0; y < m_rows; ++y) {
+		char *line = get_line(y);
+		for (unsigned x = 0; x < m_cols; ++x) {
+			fnt.draw_glyph(scr, line[x], fg, bg, m_margin+x*xstride, m_margin+y*ystride);
+		}
+	}
+}