1 /* SPDX-License-Identifier: GPL-2.0 */
2 #
3 # arch/i386/setjmp.S
4 #
5 # setjmp/longjmp for the i386 architecture
6 #
7
8 #
9 # The jmp_buf is assumed to contain the follow
10 # %ebx
11 # %esp
12 # %ebp
13 # %esi
14 # %edi
15 # <return address>
16 #
17
18 .text
19 .align 4
20 .globl kernel_setjmp
21 .type kernel_setjmp, @function
22 kernel_setjmp:
23 #ifdef _REGPARM
24 movl %eax,%edx
25 #else
26 movl 4(%esp),%edx
27 #endif
28 popl %ecx # Retu
29 xorl %eax,%eax # Retu
30 movl %ebx,(%edx)
31 movl %esp,4(%edx) # Post
32 pushl %ecx # Make
33 movl %ebp,8(%edx)
34 movl %esi,12(%edx)
35 movl %edi,16(%edx)
36 movl %ecx,20(%edx) # Retu
37 RET
38
39 .size kernel_setjmp,.-kernel_setjmp
40
41 .text
42 .align 4
43 .globl kernel_longjmp
44 .type kernel_longjmp, @function
45 kernel_longjmp:
46 #ifdef _REGPARM
47 xchgl %eax,%edx
48 #else
49 movl 4(%esp),%edx # jmp_
50 movl 8(%esp),%eax # Retu
51 #endif
52 movl (%edx),%ebx
53 movl 4(%edx),%esp
54 movl 8(%edx),%ebp
55 movl 12(%edx),%esi
56 movl 16(%edx),%edi
57 jmp *20(%edx)
58
59 .size kernel_longjmp,.-kernel_longjmp
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.