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Author SHA1 Message Date
Justin C. Miller
d19cedb12a adding kernel crti/crtn but ctors/dtors not called yet 2019-02-03 18:59:09 -08:00
Justin C. Miller
f2d39f7df8 Refactoring build system for more control of inputs 2019-02-03 18:32:45 -08:00
Justin C. Miller
579f6f64e6 First step of moving bootloader to C++ 2019-02-03 01:38:12 -08:00
Justin C. Miller
a71af1be96 Updating NOTES 2019-02-03 00:26:35 -08:00
Justin C. Miller
237c242f96 Fix ninja not reloading buildfiles on regen 2019-02-03 00:20:01 -08:00
Justin C. Miller
c4dc52c06c Fix a version parsing issue when on a tagged version 2019-02-03 00:06:39 -08:00
Justin C. Miller
e1d8dd3124 Updating README to reflect new build process v0.2.1 2019-02-02 23:56:47 -08:00
Justin C. Miller
38a1197d9e Removing old waf build scripts and vendored libcxx 2019-02-02 21:39:19 -08:00
Justin C. Miller
bc01a37452 Ninja-based buildsystem now building a running kernel! 2019-02-02 21:35:39 -08:00
Justin C. Miller
acdca19f59 Ninja buildsystem produces working bootloader 2019-02-02 18:24:58 -08:00
Justin C. Miller
a1fe745a53 Changing to __POPCORN__ for defining code that is host-only 2019-02-02 14:44:35 -08:00
Justin C. Miller
73df20d195 Ninja-based system now builds the disk images 2019-02-02 14:43:55 -08:00
Justin C. Miller
7e1933d79b Give makerd a cwd argument, and upgrade cpptoml 2019-02-02 12:18:20 -08:00
Justin C. Miller
8d23fac6cc Allow for ninja files to regenerate themselves 2019-02-02 11:52:05 -08:00
Justin C. Miller
0f8efdb55e Moving to a ninja-based build system 2019-02-02 02:59:45 -08:00
Justin C. Miller
523d0b3b8c sysroot and cross-compiler based build WIP 2019-01-17 00:51:45 -08:00
Justin C. Miller
591ca7c83c libc WIP 2018-09-24 11:13:18 -07:00
Justin C. Miller
dffdcc095d Vendoring libc++ in external/ 2018-09-22 07:55:00 -07:00
Justin C. Miller
229c1e4965 Moved cpptoml to just makerd's includes 2018-09-21 20:36:01 -07:00
Justin C. Miller
d8399e3c07 Fix for page faults under KVM 
Under KVM we were hitting what look like out-of-order and/or issues
during initialization when writing to the page tables and then
immediately writing to the mapped memory.  Adding a memory barrier and
an io_wait() in memory_bootstrap.cpp fixed it.
 2018-09-21 20:34:26 -07:00
Justin C. Miller
f1bb3556eb Update NOTES 2018-09-21 09:52:21 -07:00
Justin C. Miller
cef0a71bce Use uintptr_t instead of addr_t 
They're never actually going to change independently, and it's also
brining in kutil headers more places than they should be.
 2018-09-20 09:37:30 -07:00
Justin C. Miller
a9d72b8102 Fixing APIC timer log message 2018-09-18 17:33:11 -07:00
Justin C. Miller
d469482a7f Better spurious interrupt handling 2018-09-16 23:50:54 -07:00
Justin C. Miller
c67c1bd6a2 Give processes multiple quanta before rescheduling 2018-09-16 23:34:42 -07:00
Justin C. Miller
5e6769036c APIC timer calibration 
Now the APIC timer is calibrated against the PIT, and the interval for
timer_enable takes a number of microseconds instead of raw ticks and a
divisor.
 2018-09-16 18:56:01 -07:00
Justin C. Miller
482b9f50fc Initial process waiting/waking 
Processes can now wait on signals/children/time. There is no clock
currently so "time" is just a monotonically increating tick count. Added
a SLEEP syscall to test this waiting/waking.
 2018-09-16 12:22:52 -07:00
Justin C. Miller
f4e7eaeb40 Fixing #include error in linked_list.h 2018-09-16 12:20:14 -07:00
Justin C. Miller
8c2ff33c40 Reduce number of DEbuG syscalls in nulldrv 2018-09-15 00:40:30 -07:00
Justin C. Miller
1308864061 MSR and syscall changes 
- Moved MSR code to separate files with an enum class
- Implemented syscall_enable in C++ using new MSR calls
 2018-09-15 00:37:49 -07:00
Justin C. Miller
62c559043d Pause syscall and int 0xee interrupt syscalls 
The syscall/sysret instructions don't swap stacks. This was bad but
passable until syscalls caused the scheduler to run, and scheduling a
task that paused due to interrupt.

Adding a new (hopefully temporary) syscall interrupt `int 0xee` to allow
me to test syscalls without stack issues before I tackle the
syscall/sysret issue.

Also implemented a basic `pause` syscall that causes the calling process
to become unready. Because nothing can wake a process yet, it never
returns.
 2018-09-12 20:59:08 -07:00
Justin C. Miller
c2f85ce61b Some enum_bitfield helper operators 
Added:
  set += flag -> set = set | flag
  set -= flag -> set = set & ~flag
  set && flag -> (set & flag) == flag
 2018-09-12 20:57:15 -07:00
Justin C. Miller
5808599005 Getting rid of 'boogity!'.. end of an era. 
Since I'm doing a lot of work on task scheduling, 'boogity!' simply
isn't the "we're all good and we're done!" message that it used to be.
 2018-09-12 20:51:50 -07:00
Justin C. Miller
fafe582802 Initial priority-based scheduler 
- Scheduler now has multiple linked_lists of processes at different
  priorities
- Process structure improvements
- scheduler::tick() and scheduler::schedule() separation
 2018-09-11 22:37:00 -07:00
Justin C. Miller
593cda3ee8 Convert page_block to use kutil::linked_list 
- Created a new linked_list-based slab allocator
- Simplified memory bootstrap code by using the slab allocator and
  linked_lists
 2018-09-11 20:46:48 -07:00
Justin C. Miller
d5c44645eb New templatized linked_list collection 
Also updated tests to work with memory changes
 2018-09-09 15:32:10 -07:00
Justin C. Miller
e7a509176d Move makerd to TOML-based manifest 
Added the cpptoml library (and license), and moved to using that for
the initrd manifest. It's now possible to specify the `executable`
flag for files, and the kernel correctly only launches new processes
for the initrd files marked `executable`.
 2018-09-08 12:54:35 -07:00
Justin C. Miller
3a39d9440a Made syscall ids 64 bits in rax 2018-09-07 10:29:22 -07:00
Justin C. Miller
cabfec3f1e Clearing up kutil/kernel memory code separation 2018-09-07 10:08:47 -07:00
Justin C. Miller
956efabd8f Update NOTES 2018-09-06 09:49:44 -07:00
Justin C. Miller
f146a96298 Cleaning up interrupts.s and adding missing IRQs 2018-09-06 09:48:18 -07:00
Justin C. Miller
585abe9a18 Simple ELF program loader 
Now any initrd file is treated like a program image and passed to the
loader to load as a process. Very rudimentary elf loading just allocates
pages, copies sections, and sets the ELF's entrypoint as the RIP to
iretq to.
 2018-09-06 01:35:56 -07:00
Justin C. Miller
3d0b262435 Add null driver 
This will be the target of our real ELF loader
 2018-09-05 23:01:05 -07:00
Justin C. Miller
3f264b4490 Add syscall enum, clean up handler debug prints 2018-09-05 22:49:56 -07:00
Justin C. Miller
1758ee4215 Initial ramdisk support 
- Create initrd library to support definitions and loading
- Allow tools compiled for the host machine to be built by wscript
- Create makerd tool to build initrd from manifest
- Move screenfont to initrd, so don't load framebuffer initially
 2018-09-05 22:45:30 -07:00
Justin C. Miller
dc40c2f6ad Changes from the reorg branch 
Add CR4 options: global pages, FXSAVE, PCIDs
Better page manager page-in flags
Remove obsolete rflags-saving in create_process
 2018-09-05 22:26:23 -07:00
Justin C. Miller
2fb92e8592 Move AHCI driver into separate drivers/ directory 2018-09-05 22:17:56 -07:00
Justin C. Miller
57829e1b79 Correct the name of 'modules' folder to 'libraries' 2018-09-05 22:15:05 -07:00
Justin C. Miller
bc26d7d01d Fixing test compilation 2018-09-05 20:17:29 -07:00
Justin C. Miller
b93519e06f Updating README build instructions 2018-09-05 10:17:01 -07:00