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#include <asm/frame.h> 9 10# Copyright 2003 Pavel Machek <pavel@suse.cz>, distribute under GPLv2 11 12.code64 13 /* 14 * Hooray, we are in Long 64-bit mode (but still running in low memory) 15 */ 16ENTRY(wakeup_long64) 17 movq saved_magic, %rax 18 movq $0x123456789abcdef0, %rdx 19 cmpq %rdx, %rax 20 jne bogus_64_magic 21 22 movw $__KERNEL_DS, %ax 23 movw %ax, %ss 24 movw %ax, %ds 25 movw %ax, %es 26 movw %ax, %fs 27 movw %ax, %gs 28 movq saved_rsp, %rsp 29 30 movq saved_rbx, %rbx 31 movq saved_rdi, %rdi 32 movq saved_rsi, %rsi 33 movq saved_rbp, %rbp 34 35 movq saved_rip, %rax 36 jmp *%rax 37ENDPROC(wakeup_long64) 38 39bogus_64_magic: 40 jmp bogus_64_magic 41 42ENTRY(do_suspend_lowlevel) 43 FRAME_BEGIN 44 subq $8, %rsp 45 xorl %eax, %eax 46 call save_processor_state 47 48 movq $saved_context, %rax 49 movq %rsp, pt_regs_sp(%rax) 50 movq %rbp, pt_regs_bp(%rax) 51 movq %rsi, pt_regs_si(%rax) 52 movq %rdi, pt_regs_di(%rax) 53 movq %rbx, pt_regs_bx(%rax) 54 movq %rcx, pt_regs_cx(%rax) 55 movq %rdx, pt_regs_dx(%rax) 56 movq %r8, pt_regs_r8(%rax) 57 movq %r9, pt_regs_r9(%rax) 58 movq %r10, pt_regs_r10(%rax) 59 movq %r11, pt_regs_r11(%rax) 60 movq %r12, pt_regs_r12(%rax) 61 movq %r13, pt_regs_r13(%rax) 62 movq %r14, pt_regs_r14(%rax) 63 movq %r15, pt_regs_r15(%rax) 64 pushfq 65 popq pt_regs_flags(%rax) 66 67 movq $.Lresume_point, saved_rip(%rip) 68 69 movq %rsp, saved_rsp 70 movq %rbp, saved_rbp 71 movq %rbx, saved_rbx 72 movq %rdi, saved_rdi 73 movq %rsi, saved_rsi 74 75 addq $8, %rsp 76 movl $3, %edi 77 xorl %eax, %eax 78 call x86_acpi_enter_sleep_state 79 /* in case something went wrong, restore the machine status and go on */ 80 jmp .Lresume_point 81 82 .align 4 83.Lresume_point: 84 /* We don't restore %rax, it must be 0 anyway */ 85 movq $saved_context, %rax 86 movq saved_context_cr4(%rax), %rbx 87 movq %rbx, %cr4 88 movq saved_context_cr3(%rax), %rbx 89 movq %rbx, %cr3 90 movq saved_context_cr2(%rax), %rbx 91 movq %rbx, %cr2 92 movq saved_context_cr0(%rax), %rbx 93 movq %rbx, %cr0 94 pushq pt_regs_flags(%rax) 95 popfq 96 movq pt_regs_sp(%rax), %rsp 97 movq pt_regs_bp(%rax), %rbp 98 movq pt_regs_si(%rax), %rsi 99 movq pt_regs_di(%rax), %rdi 100 movq pt_regs_bx(%rax), %rbx 101 movq pt_regs_cx(%rax), %rcx 102 movq pt_regs_dx(%rax), %rdx 103 movq pt_regs_r8(%rax), %r8 104 movq pt_regs_r9(%rax), %r9 105 movq pt_regs_r10(%rax), %r10 106 movq pt_regs_r11(%rax), %r11 107 movq pt_regs_r12(%rax), %r12 108 movq pt_regs_r13(%rax), %r13 109 movq pt_regs_r14(%rax), %r14 110 movq pt_regs_r15(%rax), %r15 111 112#ifdef CONFIG_KASAN 113 /* 114 * The suspend path may have poisoned some areas deeper in the stack, 115 * which we now need to unpoison. 116 */ 117 movq %rsp, %rdi 118 call kasan_unpoison_task_stack_below 119#endif 120 121 xorl %eax, %eax 122 addq $8, %rsp 123 FRAME_END 124 jmp restore_processor_state 125ENDPROC(do_suspend_lowlevel) 126 127.data 128saved_rbp: .quad 0 129saved_rsi: .quad 0 130saved_rdi: .quad 0 131saved_rbx: .quad 0 132 133saved_rip: .quad 0 134saved_rsp: .quad 0 135 136ENTRY(saved_magic) .quad 0 137