Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | .text |
2 | ||
3 | /* Originally gcc generated, modified by hand | |
4 | * | |
5 | * This may not use any stack, nor any variable that is not "NoSave": | |
6 | * | |
7 | * Its rewriting one kernel image with another. What is stack in "old" | |
8 | * image could very well be data page in "new" image, and overwriting | |
9 | * your own stack under you is bad idea. | |
10 | */ | |
11 | ||
12 | #include <linux/linkage.h> | |
13 | #include <asm/segment.h> | |
14 | #include <asm/page.h> | |
86feeaa8 | 15 | #include <asm/asm-offsets.h> |
1da177e4 LT |
16 | |
17 | .text | |
18 | ||
19 | ENTRY(swsusp_arch_suspend) | |
20 | ||
21 | movl %esp, saved_context_esp | |
22 | movl %ebx, saved_context_ebx | |
23 | movl %ebp, saved_context_ebp | |
24 | movl %esi, saved_context_esi | |
25 | movl %edi, saved_context_edi | |
26 | pushfl ; popl saved_context_eflags | |
27 | ||
28 | call swsusp_save | |
29 | ret | |
30 | ||
31 | ENTRY(swsusp_arch_resume) | |
32 | movl $swsusp_pg_dir-__PAGE_OFFSET, %ecx | |
33 | movl %ecx, %cr3 | |
34 | ||
35 | movl pagedir_nosave, %edx | |
36 | .p2align 4,,7 | |
37 | ||
38 | copy_loop: | |
39 | testl %edx, %edx | |
40 | jz done | |
41 | ||
42 | movl pbe_address(%edx), %esi | |
43 | movl pbe_orig_address(%edx), %edi | |
44 | ||
45 | movl $1024, %ecx | |
46 | rep | |
47 | movsl | |
48 | ||
49 | movl pbe_next(%edx), %edx | |
50 | jmp copy_loop | |
51 | .p2align 4,,7 | |
52 | ||
53 | done: | |
54 | /* Flush TLB, including "global" things (vmalloc) */ | |
55 | movl mmu_cr4_features, %eax | |
56 | movl %eax, %edx | |
57 | andl $~(1<<7), %edx; # PGE | |
58 | movl %edx, %cr4; # turn off PGE | |
59 | movl %cr3, %ecx; # flush TLB | |
60 | movl %ecx, %cr3 | |
61 | movl %eax, %cr4; # turn PGE back on | |
62 | ||
63 | movl saved_context_esp, %esp | |
64 | movl saved_context_ebp, %ebp | |
65 | movl saved_context_ebx, %ebx | |
66 | movl saved_context_esi, %esi | |
67 | movl saved_context_edi, %edi | |
68 | ||
69 | pushl saved_context_eflags ; popfl | |
70 | ||
71 | xorl %eax, %eax | |
72 | ||
73 | ret |