1 /*
2 * linux/mm/page.s
3 *
4 * (C) 1991 Linus Torvalds
5 */
6
7 /*
8 * page.s contains the low-level page-exception code.
9 * the real work is done in mm.c
10 */
11
12 .globl _page_fault
13
14 _page_fault:
15 xchgl %eax,(%esp)
16 pushl %ecx
17 pushl %edx
18 push %ds
19 push %es
20 push %fs
21 movl $0x10,%edx
22 mov %dx,%ds
23 mov %dx,%es
24 mov %dx,%fs
25 movl %cr2,%edx
26 pushl %edx
27 pushl %eax
28 testl $1,%eax
29 jne 1f
30 call _do_no_page
31 jmp 2f
32 1: call _do_wp_page
33 2: addl $8,%esp
34 pop %fs
35 pop %es
36 pop %ds
37 popl %edx
38 popl %ecx
39 popl %eax
40 iret
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