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?

1 files changed, 2 insertions, 2 deletions

diff --git a/src/tcb.c b/src/tcb.c
index ea00d3d..053ea6f 100644
--- a/src/tcb.c
+++ b/src/tcb.c
@@ -102,14 +102,14 @@ stat_t alloc_stack(struct tcb *t)
 	/* get parent process */
 	struct tcb *p = get_tcb(t->eid);
 
-	t->thread_stack = __setup_thread_stack(p, __thread_stack_size);
+	t->thread_stack = __setup_thread_stack(p, thread_stack_size());
 	if (!t->thread_stack)
 		return ERR_OOMEM;
 
 	/** \todo this only allows for a global stack size, what if a user wants
 	 * per thread stack sizes? I guess allocate them yourself in userspace
 	 * or something? */
-	t->thread_stack_size = __thread_stack_size;
+	t->thread_stack_size = thread_stack_size();
 	return OK;
 }