minix/lib/libc/gnu/arch/i386/rts/longjmp.S
Arun Thomas 9a21d1a2fd Macros for symbols used in both ASM and C
-The macros take care of prepending the leading underscore when
 necessary.
2010-08-17 16:44:07 +00:00

37 lines
840 B
ArmAsm

/ longjmp.gnu.s
/
/ Created: Oct 15, 1993 by Philip Homburg <philip@cs.vu.nl>
#include <machine/asm.h>
ENTRY(longjmp)
movl 4(%esp), %eax /* jmp_buf */
cmpl $0, 0(%eax) /* save mask? */
je 1f
leal 4(%eax), %edx /* pointer to sigset_t */
push %edx
call _C_LABEL(__oldsigset) /* restore mask */
addl $4, %esp
movl 4(%esp), %eax /* jmp_buf */
1:
movl 8(%esp), %ecx /* result value */
movl 12(%eax), %esp /* restore stack pointer */
movl 8(%eax), %edx /* restore program counter */
movl %edx, 0(%esp)
push %ecx /* save result code */
movl 16(%eax), %ebp /* restore frame pointer */
movl 20(%eax), %ebx
movl 24(%eax), %ecx
movl 28(%eax), %edx
movl 32(%eax), %esi
movl 36(%eax), %edi
pop %eax
testl %eax, %eax
jz 1f
ret
1: movl $1, %eax
ret
/ $PchId: longjmp.gnu.s,v 1.4 1996/03/12 19:30:02 philip Exp $