1.globl getmcontext
2getmcontext:
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
27setmcontext:
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
46