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Author SHA1 Message Date
Justin C. Miller
f9d964cccb Adding address manager 2019-02-28 00:37:00 -08:00
Justin C. Miller
a9ac30b991 Allow heap_manager to use non-contiguous blocks. 
* Heap manager can now manage non-contiguous blocks of memory (currently
  all sized at the max block size only)
* Fix a bug where heap manager would try to buddy-merge max-sized blocks
 2019-02-28 00:37:00 -08:00
Justin C. Miller
61df9cf32c Add -ggdb to tests build 2019-02-28 00:37:00 -08:00
Justin C. Miller
bbd31929ba Rename memory_manager to heap_manager 2019-02-28 00:37:00 -08:00
Justin C. Miller
ec20e9f3d9 Stripping the kernel 
Strip the kernel version that we put into the disk image, but keep the
debug symbols in a separate file for GDB.
 2019-02-17 23:43:59 -08:00
Justin C. Miller
3bcd83f5a3 Notes update 2019-02-17 23:38:40 -08:00
Justin C. Miller
341ba5146a Forgot to comment third arg for gdt_write 2019-02-17 23:38:40 -08:00
Justin C. Miller
83b37ef536 Give qemu.sh better option handling 2019-02-10 10:31:43 -08:00
Justin C. Miller
1965197ccd Fix sysroot ld setting 2019-02-10 10:31:16 -08:00
Justin C. Miller
29747f4891 Allow modules to specify defines 
The modules.yaml now has an optional defines: list per module that adds
preprocessor definitions to the build scripts. Also added a --debug flag
to qemu.sh to run QEMU's debugger host.
 2019-02-08 21:22:53 -08:00
Justin C. Miller
aca442ee87 First pass at message syscalls 2019-02-07 18:19:22 -08:00
Justin C. Miller
8e85ae5318 Added getpid system call 2019-02-07 17:52:57 -08:00
Justin C. Miller
8c32471e0d Pass CPU state as a pointer 
Previously CPU statue was passed on the stack, but the compiler is
allowed to clobber values passed to it on the stack in the SysV x86 ABI.
So now leave the state on the stack but pass a pointer to it into the
ISR functions.
 2019-02-07 17:47:42 -08:00
Justin C. Miller
79711be46a Dump compiler args and defines. 
As part of the build, dump the compiler arguments and defines per target
into files.
 2019-02-07 17:39:10 -08:00
Justin C. Miller
863e5bda15 Turning console into a class 2019-02-04 00:48:18 -08:00
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