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/

/ our buffer looks like:

/  eax,ebx,ecx,edx,esi,edi,esp,ebp,pc

/

/ _longjmp is called with two parameters:  jmp_buf*,int

/ jmp_buf* is at 4(%esp), int is at 8(%esp)

/ retaddr is, of course, at (%esp)

        .globl  _longjmp

        .globl  longjmp

_longjmp:

longjmp:

        movl    4(%esp), %ebx   / address of buf

        movl    8(%esp), %eax   / store return value

        movl    24(%ebx), %esp  / restore stack

        movl    32(%ebx), %edi

/ Next line sets up return address.

        movl    %edi, 0(%esp)

        movl    8(%ebx), %ecx

        movl    12(%ebx), %edx

        movl    16(%ebx), %esi

        movl    20(%ebx), %edi

        movl    28(%ebx), %ebp

        movl    4(%ebx), %ebx

        testl   %eax,%eax

        jne     bye

        incl    %eax            / eax hold 0 if we are here

bye:

        ret