kmi/arch/riscv64/kernel/proc.c, branch masterACTIVE - Kernel with migrating threads as IPChttps://metanimi.dy.fi/cgit/kmi/atom?h=master2024-11-02T16:58:13Zallow skipping some cache flushes in proc2024-11-02T16:58:13ZKimplulkimi.h.kuparinen@gmail.com2024-11-02T16:58:13Zurn:sha1:5890df7bf838a5a912465a1bba02e5d8cf34e33crpc actually marks and unmarks stack regions2024-11-01T08:27:36ZKimplulkimi.h.kuparinen@gmail.com2024-10-30T11:34:18Zurn:sha1:f139fff6ae7063c1965fa3085bb2585d7d838d72
+ Processes won't be able to read previous stack frames etc
most of the way to passing tests2024-10-29T22:57:33ZKimplulkimi.h.kuparinen@gmail.com2024-10-29T22:57:33Zurn:sha1:44a73ecab6e91519627786a5101cd4f1a2f2b0d7start moving towards threads always being in rpc2024-10-29T19:17:31ZKimplulkimi.h.kuparinen@gmail.com2024-10-29T19:17:31Zurn:sha1:5976ad390a15726c3ddfacf8c8b282c8350f9554change sys_ret handling to always include id2024-08-22T10:19:50ZKimplulkimi.h.kuparinen@gmail.com2024-08-22T10:19:50Zurn:sha1:66b39eb7ce9605cbb70defdca7f0eb144855ddcdstart working on tests2024-07-09T19:12:27ZKimplulkimi.h.kuparinen@gmail.com2024-07-09T19:12:27Zurn:sha1:e8a1df103cc28419dd7d4439c0b1d1739d110f78
+ Current setup will likely not last long, just a stopgap until I figure
out how I want to build each testcase etc.
Probably dir based, but I'll probably add some scripts that generate
the build rules for each test case (or binary?). Also, should probably
put ouput files in a build directory and keep the source clean, but
again, good enough for now.
Will have to start implementing more extensive tests, and probably
come up with some way to compare textual output etc.
fix LLVM2024-07-08T15:04:03ZKimplulkimi.h.kuparinen@gmail.com2024-07-08T14:43:59Zurn:sha1:e134202611a50b358c147c92bfb8a7f443030b8b
+ Anything extern is right out as LLVM doesn't produce correct code for
them. Maybe if I added some extra attributes but I'm skeptical.
Replaced with static variables and getters/setters.
+ Inline ASM is apparently a bit buggy, so use an assembly stub when jumping to init.
+ Minimize work done in main() to minimize chance of LLVM doing something silly.
Still not 100% certain that I shouldn't just write the main() as an assembly stub
in arch/riscv64 to be absolutely sure everything works as intended.
+ Make .kernel.start section SHF_ALLOC, otherwise lld complains about
pc-relative addressing
Probably some other stuff as well that I'm forgetting right now. But at least with
LLVM14 LTO seems to work, which is pretty cool?
add orphan checking to timer and irq handling2024-07-08T14:38:59ZKimplulkimi.h.kuparinen@gmail.com2024-07-08T14:38:59Zurn:sha1:7e828ec1e1479ff9a8afe845539d08ca0dfada5fadd req_page back in as I realized it's useful2024-07-07T18:47:14ZKimplulkimi.h.kuparinen@gmail.com2024-07-07T18:47:14Zurn:sha1:219c27d420fe0abe5515cefc2513c6fe60aafdf9
+ Can be used to pass contiguous memory regions to things like virtio
block devices for implementing disk drivers etc.
make executable entrypoint universal callback2024-07-07T15:12:55ZKimplulkimi.h.kuparinen@gmail.com2024-07-07T15:12:55Zurn:sha1:fe4c623cb9320226866829317cea8ba0c49e7dbc
+ Effectively means that all executables can be called into, but if an
exe doesn't want to deal with anyone else it should just set a flag
like `not_really_a_server` or whatever