From e134202611a50b358c147c92bfb8a7f443030b8b Mon Sep 17 00:00:00 2001 From: Kimplul Date: Mon, 8 Jul 2024 17:43:59 +0300 Subject: fix LLVM + 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? --- src/bkl.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'src/bkl.c') diff --git a/src/bkl.c b/src/bkl.c index aa7bd53..6ee58f4 100644 --- a/src/bkl.c +++ b/src/bkl.c @@ -9,4 +9,15 @@ * Instanciation of the big kernel lock. */ -spinlock_t bkl = 0; +/** The Big Kernel Lock. */ +static spinlock_t bkl = 0; + +void bkl_lock() +{ + spin_lock(&bkl); +} + +void bkl_unlock() +{ + spin_unlock(&bkl); +} -- cgit v1.3