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Save %eax for i386

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This commit is contained in:
Konstantin Belousov 2010-04-13 13:55:23 +03:00
parent 5a7407dd94
commit 66e49bdd41
1 changed files with 4 additions and 4 deletions
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8
src/x86/getcontext.S
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@ -37,9 +37,9 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
.global _Ux86_getcontext
.type _Ux86_getcontext, @function
_Ux86_getcontext:
#if defined __linux__
mov 4(%esp),%eax /* ucontext_t* */
#if defined __linux__
/* EAX is not preserved. */
movl $0, (LINUX_UC_MCONTEXT_OFF+LINUX_SC_EAX_OFF)(%eax)
@ -66,9 +66,9 @@ _Ux86_getcontext:
fnstenv (%ecx)
fldenv (%ecx)
#elif defined __FreeBSD__
/* EAX is not preserved. */
movl $0, FREEBSD_UC_MCONTEXT_EAX_OFF(%eax)
pushl %eax
mov 8(%esp),%eax /* ucontext_t* */
popl FREEBSD_UC_MCONTEXT_EAX_OFF(%eax)
movl %ebx, FREEBSD_UC_MCONTEXT_EBX_OFF(%eax)
movl %ecx, FREEBSD_UC_MCONTEXT_ECX_OFF(%eax)
movl %edx, FREEBSD_UC_MCONTEXT_EDX_OFF(%eax)