1 .globl getmcontext
2 getmcontext:
3 	movl	4(%esp), %eax
4 
5 	movl	%fs, 8(%eax)
6 	movl	%es, 12(%eax)
7 	movl	%ds, 16(%eax)
8 	movl	%ss, 76(%eax)
9 	movl	%edi, 20(%eax)
10 	movl	%esi, 24(%eax)
11 	movl	%ebp, 28(%eax)
12 	movl	%ebx, 36(%eax)
13 	movl	%edx, 40(%eax)
14 	movl	%ecx, 44(%eax)
15 
16 	movl	$1, 48(%eax)	/* %eax */
17 	movl	(%esp), %ecx	/* %eip */
18 	movl	%ecx, 60(%eax)
19 	leal	4(%esp), %ecx	/* %esp */
20 	movl	%ecx, 72(%eax)
21 
22 	movl	44(%eax), %ecx	/* restore %ecx */
23 	movl	$0, %eax
24 	ret
25 
26 .globl setmcontext
27 setmcontext:
28 	movl	4(%esp), %eax
29 
30 	movl	8(%eax), %fs
31 	movl	12(%eax), %es
32 	movl	16(%eax), %ds
33 	movl	76(%eax), %ss
34 	movl	20(%eax), %edi
35 	movl	24(%eax), %esi
36 	movl	28(%eax), %ebp
37 	movl	36(%eax), %ebx
38 	movl	40(%eax), %edx
39 	movl	44(%eax), %ecx
40 
41 	movl	72(%eax), %esp
42 	pushl	60(%eax)	/* new %eip */
43 	movl	48(%eax), %eax
44 	ret
45