diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 05:14:37 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 05:14:37 -0400 |
| commit | ba733ec4725df406a6ff5c5c1e6c447f42bbf39d (patch) | |
| tree | 1a1c87f6a332472145f8543bd60c7a2ac31386ae /arch/x86_64/kernel/suspend_asm.S | |
| parent | e86a989de27d4c0226928d6132f284f6156f30f7 (diff) | |
x86_64: prepare shared kernel/suspend_asm.S
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86_64/kernel/suspend_asm.S')
| -rw-r--r-- | arch/x86_64/kernel/suspend_asm.S | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/arch/x86_64/kernel/suspend_asm.S b/arch/x86_64/kernel/suspend_asm.S deleted file mode 100644 index 16d183f67bc1..000000000000 --- a/arch/x86_64/kernel/suspend_asm.S +++ /dev/null | |||
| @@ -1,110 +0,0 @@ | |||
| 1 | /* Copyright 2004,2005 Pavel Machek <pavel@suse.cz>, Andi Kleen <ak@suse.de>, Rafael J. Wysocki <rjw@sisk.pl> | ||
| 2 | * | ||
| 3 | * Distribute under GPLv2. | ||
| 4 | * | ||
| 5 | * swsusp_arch_resume may not use any stack, nor any variable that is | ||
| 6 | * not "NoSave" during copying pages: | ||
| 7 | * | ||
| 8 | * Its rewriting one kernel image with another. What is stack in "old" | ||
| 9 | * image could very well be data page in "new" image, and overwriting | ||
| 10 | * your own stack under you is bad idea. | ||
| 11 | */ | ||
| 12 | |||
| 13 | .text | ||
| 14 | #include <linux/linkage.h> | ||
| 15 | #include <asm/segment.h> | ||
| 16 | #include <asm/page.h> | ||
| 17 | #include <asm/asm-offsets.h> | ||
| 18 | |||
| 19 | ENTRY(swsusp_arch_suspend) | ||
| 20 | |||
| 21 | movq %rsp, saved_context_esp(%rip) | ||
| 22 | movq %rax, saved_context_eax(%rip) | ||
| 23 | movq %rbx, saved_context_ebx(%rip) | ||
| 24 | movq %rcx, saved_context_ecx(%rip) | ||
| 25 | movq %rdx, saved_context_edx(%rip) | ||
| 26 | movq %rbp, saved_context_ebp(%rip) | ||
| 27 | movq %rsi, saved_context_esi(%rip) | ||
| 28 | movq %rdi, saved_context_edi(%rip) | ||
| 29 | movq %r8, saved_context_r08(%rip) | ||
| 30 | movq %r9, saved_context_r09(%rip) | ||
| 31 | movq %r10, saved_context_r10(%rip) | ||
| 32 | movq %r11, saved_context_r11(%rip) | ||
| 33 | movq %r12, saved_context_r12(%rip) | ||
| 34 | movq %r13, saved_context_r13(%rip) | ||
| 35 | movq %r14, saved_context_r14(%rip) | ||
| 36 | movq %r15, saved_context_r15(%rip) | ||
| 37 | pushfq ; popq saved_context_eflags(%rip) | ||
| 38 | |||
| 39 | call swsusp_save | ||
| 40 | ret | ||
| 41 | |||
| 42 | ENTRY(restore_image) | ||
| 43 | /* switch to temporary page tables */ | ||
| 44 | movq $__PAGE_OFFSET, %rdx | ||
| 45 | movq temp_level4_pgt(%rip), %rax | ||
| 46 | subq %rdx, %rax | ||
| 47 | movq %rax, %cr3 | ||
| 48 | /* Flush TLB */ | ||
| 49 | movq mmu_cr4_features(%rip), %rax | ||
| 50 | movq %rax, %rdx | ||
| 51 | andq $~(1<<7), %rdx # PGE | ||
| 52 | movq %rdx, %cr4; # turn off PGE | ||
| 53 | movq %cr3, %rcx; # flush TLB | ||
| 54 | movq %rcx, %cr3; | ||
| 55 | movq %rax, %cr4; # turn PGE back on | ||
| 56 | |||
| 57 | movq restore_pblist(%rip), %rdx | ||
| 58 | loop: | ||
| 59 | testq %rdx, %rdx | ||
| 60 | jz done | ||
| 61 | |||
| 62 | /* get addresses from the pbe and copy the page */ | ||
| 63 | movq pbe_address(%rdx), %rsi | ||
| 64 | movq pbe_orig_address(%rdx), %rdi | ||
| 65 | movq $512, %rcx | ||
| 66 | rep | ||
| 67 | movsq | ||
| 68 | |||
| 69 | /* progress to the next pbe */ | ||
| 70 | movq pbe_next(%rdx), %rdx | ||
| 71 | jmp loop | ||
| 72 | done: | ||
| 73 | /* go back to the original page tables */ | ||
| 74 | movq $(init_level4_pgt - __START_KERNEL_map), %rax | ||
| 75 | addq phys_base(%rip), %rax | ||
| 76 | movq %rax, %cr3 | ||
| 77 | |||
| 78 | /* Flush TLB, including "global" things (vmalloc) */ | ||
| 79 | movq mmu_cr4_features(%rip), %rax | ||
| 80 | movq %rax, %rdx | ||
| 81 | andq $~(1<<7), %rdx; # PGE | ||
| 82 | movq %rdx, %cr4; # turn off PGE | ||
| 83 | movq %cr3, %rcx; # flush TLB | ||
| 84 | movq %rcx, %cr3 | ||
| 85 | movq %rax, %cr4; # turn PGE back on | ||
| 86 | |||
| 87 | movl $24, %eax | ||
| 88 | movl %eax, %ds | ||
| 89 | |||
| 90 | movq saved_context_esp(%rip), %rsp | ||
| 91 | movq saved_context_ebp(%rip), %rbp | ||
| 92 | /* Don't restore %rax, it must be 0 anyway */ | ||
| 93 | movq saved_context_ebx(%rip), %rbx | ||
| 94 | movq saved_context_ecx(%rip), %rcx | ||
| 95 | movq saved_context_edx(%rip), %rdx | ||
| 96 | movq saved_context_esi(%rip), %rsi | ||
| 97 | movq saved_context_edi(%rip), %rdi | ||
| 98 | movq saved_context_r08(%rip), %r8 | ||
| 99 | movq saved_context_r09(%rip), %r9 | ||
| 100 | movq saved_context_r10(%rip), %r10 | ||
| 101 | movq saved_context_r11(%rip), %r11 | ||
| 102 | movq saved_context_r12(%rip), %r12 | ||
| 103 | movq saved_context_r13(%rip), %r13 | ||
| 104 | movq saved_context_r14(%rip), %r14 | ||
| 105 | movq saved_context_r15(%rip), %r15 | ||
| 106 | pushq saved_context_eflags(%rip) ; popfq | ||
| 107 | |||
| 108 | xorq %rax, %rax | ||
| 109 | |||
| 110 | ret | ||