Merge branch 'x86/ras' into x86/core, to fix conflicts
[deliverable/linux.git] / arch / x86 / kernel / acpi / wakeup_64.S
1 .text
2 #include <linux/linkage.h>
3 #include <asm/segment.h>
4 #include <asm/pgtable_types.h>
5 #include <asm/page_types.h>
6 #include <asm/msr.h>
7 #include <asm/asm-offsets.h>
8
9 # Copyright 2003 Pavel Machek <pavel@suse.cz>, distribute under GPLv2
10
11 .code64
12 /*
13 * Hooray, we are in Long 64-bit mode (but still running in low memory)
14 */
15 ENTRY(wakeup_long64)
16 movq saved_magic, %rax
17 movq $0x123456789abcdef0, %rdx
18 cmpq %rdx, %rax
19 jne bogus_64_magic
20
21 movw $__KERNEL_DS, %ax
22 movw %ax, %ss
23 movw %ax, %ds
24 movw %ax, %es
25 movw %ax, %fs
26 movw %ax, %gs
27 movq saved_rsp, %rsp
28
29 movq saved_rbx, %rbx
30 movq saved_rdi, %rdi
31 movq saved_rsi, %rsi
32 movq saved_rbp, %rbp
33
34 movq saved_rip, %rax
35 jmp *%rax
36 ENDPROC(wakeup_long64)
37
38 bogus_64_magic:
39 jmp bogus_64_magic
40
41 ENTRY(do_suspend_lowlevel)
42 subq $8, %rsp
43 xorl %eax, %eax
44 call save_processor_state
45
46 movq $saved_context, %rax
47 movq %rsp, pt_regs_sp(%rax)
48 movq %rbp, pt_regs_bp(%rax)
49 movq %rsi, pt_regs_si(%rax)
50 movq %rdi, pt_regs_di(%rax)
51 movq %rbx, pt_regs_bx(%rax)
52 movq %rcx, pt_regs_cx(%rax)
53 movq %rdx, pt_regs_dx(%rax)
54 movq %r8, pt_regs_r8(%rax)
55 movq %r9, pt_regs_r9(%rax)
56 movq %r10, pt_regs_r10(%rax)
57 movq %r11, pt_regs_r11(%rax)
58 movq %r12, pt_regs_r12(%rax)
59 movq %r13, pt_regs_r13(%rax)
60 movq %r14, pt_regs_r14(%rax)
61 movq %r15, pt_regs_r15(%rax)
62 pushfq
63 popq pt_regs_flags(%rax)
64
65 movq $.Lresume_point, saved_rip(%rip)
66
67 movq %rsp, saved_rsp
68 movq %rbp, saved_rbp
69 movq %rbx, saved_rbx
70 movq %rdi, saved_rdi
71 movq %rsi, saved_rsi
72
73 addq $8, %rsp
74 movl $3, %edi
75 xorl %eax, %eax
76 call x86_acpi_enter_sleep_state
77 /* in case something went wrong, restore the machine status and go on */
78 jmp .Lresume_point
79
80 .align 4
81 .Lresume_point:
82 /* We don't restore %rax, it must be 0 anyway */
83 movq $saved_context, %rax
84 movq saved_context_cr4(%rax), %rbx
85 movq %rbx, %cr4
86 movq saved_context_cr3(%rax), %rbx
87 movq %rbx, %cr3
88 movq saved_context_cr2(%rax), %rbx
89 movq %rbx, %cr2
90 movq saved_context_cr0(%rax), %rbx
91 movq %rbx, %cr0
92 pushq pt_regs_flags(%rax)
93 popfq
94 movq pt_regs_sp(%rax), %rsp
95 movq pt_regs_bp(%rax), %rbp
96 movq pt_regs_si(%rax), %rsi
97 movq pt_regs_di(%rax), %rdi
98 movq pt_regs_bx(%rax), %rbx
99 movq pt_regs_cx(%rax), %rcx
100 movq pt_regs_dx(%rax), %rdx
101 movq pt_regs_r8(%rax), %r8
102 movq pt_regs_r9(%rax), %r9
103 movq pt_regs_r10(%rax), %r10
104 movq pt_regs_r11(%rax), %r11
105 movq pt_regs_r12(%rax), %r12
106 movq pt_regs_r13(%rax), %r13
107 movq pt_regs_r14(%rax), %r14
108 movq pt_regs_r15(%rax), %r15
109
110 xorl %eax, %eax
111 addq $8, %rsp
112 jmp restore_processor_state
113 ENDPROC(do_suspend_lowlevel)
114
115 .data
116 ENTRY(saved_rbp) .quad 0
117 ENTRY(saved_rsi) .quad 0
118 ENTRY(saved_rdi) .quad 0
119 ENTRY(saved_rbx) .quad 0
120
121 ENTRY(saved_rip) .quad 0
122 ENTRY(saved_rsp) .quad 0
123
124 ENTRY(saved_magic) .quad 0
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