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new FreeBSD

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This commit is contained in:
rsc 2005-11-03 01:00:56 +00:00
parent 2494fc9fa0
commit b4d5d19438
2 changed files with 45 additions and 59 deletions
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89
src/libthread/FreeBSD-386-asm.s
View file

@ -5,50 +5,51 @@ _tas:
xchgl %eax, 0(%ecx) xchgl %eax, 0(%ecx)
ret ret
.globl setmcontext .globl getcontext
setmcontext: getcontext:
movl 4(%esp), %edx movl 4(%esp), %eax
movl 8(%edx), %fs addl $16, %eax /* point to mcontext */
movl 12(%edx), %es
movl 16(%edx), %ds movl %fs, 8(%eax)
movl 76(%edx), %ss movl %es, 12(%eax)
movl 20(%edx), %edi movl %ds, 16(%eax)
movl 24(%edx), %esi movl %ss, 76(%eax)
movl 28(%edx), %ebp movl %edi, 20(%eax)
movl %esp, %ecx movl %esi, 24(%eax)
movl 72(%edx), %esp movl %ebp, 28(%eax)
pushl 60(%edx) /* eip */ movl %ebx, 36(%eax)
pushl 44(%edx) /* ecx */ movl %edx, 40(%eax)
pushl 48(%edx) /* eax */ movl %ecx, 44(%eax)
movl 36(%edx), %ebx
movl 40(%edx), %edx movl $1, 48(%eax) /* %eax */
movl 12(%ecx), %eax movl (%esp), %ecx /* %eip */
popl %eax movl %ecx, 60(%eax)
popl %ecx leal 4(%esp), %ecx /* %esp */
movl %ecx, 72(%eax)
movl 44(%eax), %ecx /* restore %ecx */
movl $0, %eax
ret ret
.globl getmcontext .globl setcontext
getmcontext: setcontext:
pushl %edx movl 4(%esp), %eax
movl 8(%esp), %edx addl $16, %eax /* point to mcontext */
movl %fs, 8(%edx)
movl %es, 12(%edx) movl 8(%eax), %fs
movl %ds, 16(%edx) movl 12(%eax), %es
movl %ss, 76(%edx) movl 16(%eax), %ds
movl %edi, 20(%edx) movl 76(%eax), %ss
movl %esi, 24(%edx) movl 20(%eax), %edi
movl %ebp, 28(%edx) movl 24(%eax), %esi
movl %ebx, 36(%edx) movl 28(%eax), %ebp
movl $1, 48(%edx) movl 36(%eax), %ebx
popl %eax movl 40(%eax), %edx
movl %eax, 40(%edx) movl 72(%eax), %esp
movl %ecx, 44(%edx)
movl (%esp), %eax /* eip */ movl 60(%eax), %ecx /* push new %eip */
movl %eax, 60(%edx) pushl %ecx
movl %esp, %eax
addl $4, %eax /* setmcontext will re-push the eip */
movl %eax, 72(%edx)
movl 40(%edx), %edx
xorl %eax, %eax
ret
movl 44(%eax), %ecx
movl 48(%eax), %eax
ret

15
src/libthread/FreeBSD.c
View file

@ -18,21 +18,6 @@ makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
ucp->uc_mcontext.mc_esp = (int)sp; ucp->uc_mcontext.mc_esp = (int)sp;
} }
extern int getmcontext(mcontext_t*);
extern int setmcontext(mcontext_t*);
int
getcontext(ucontext_t *uc)
{
return getmcontext(&uc->uc_mcontext);
}
void
setcontext(ucontext_t *uc)
{
setmcontext(&uc->uc_mcontext);
}
int int
swapcontext(ucontext_t *oucp, ucontext_t *ucp) swapcontext(ucontext_t *oucp, ucontext_t *ucp)
{ {