- movl 4(%esp),%edx /* jumpbuf */
- movl 8(%esp),%eax /* result */
- movl 0(%edx),%ecx
- movl 4(%edx),%ebx
- movl 8(%edx),%esp
- movl 12(%edx),%ebp
- movl 16(%edx),%esi
- movl 20(%edx),%edi
- cmpl $0,%eax
- jne 1f
- movl $1,%eax
-1: movl %ecx,0(%esp)
+ /* Get jmp_buf pointer in %edx */
+ movl 4(%esp),%edx
+ /* Get result in %eax */
+ movl 8(%esp),%eax
+ /* Force result to non-zero */
+ testl %eax, %eax
+ jnz 1f
+ incl %eax
+1: /* Restore stack pointer */
+ movl env_stack(%edx), %esp
+ /* Restore other registers */
+ movl env_ebx(%edx), %ebx
+ movl env_esi(%edx), %esi
+ movl env_edi(%edx), %edi
+ movl env_ebp(%edx), %ebp
+ /* Replace return address on the new stack */
+ popl %ecx /* discard */
+ pushl env_retaddr(%edx)
+ /* Return to setjmp() caller */