1 /* SPDX-License-Identifier: GPL-2.0-only */
3 #include <linux/linkage.h>
4 #include <asm/segment.h>
5 #include <asm/pgtable_types.h>
6 #include <asm/page_types.h>
8 #include <asm/asm-offsets.h>
10 #include <asm/nospec-branch.h>
12 # Copyright 2003 Pavel Machek <pavel@suse.cz
16 * Hooray, we are in Long 64-bit mode (but still running in low memory)
18 SYM_FUNC_START(wakeup_long64)
19 movq saved_magic, %rax
20 movq $0x123456789abcdef0, %rdx
24 /* stop here on a saved_magic mismatch */
25 movq $0xbad6d61676963, %rcx
29 movw $__KERNEL_DS, %ax
43 ANNOTATE_RETPOLINE_SAFE
45 SYM_FUNC_END(wakeup_long64)
47 SYM_FUNC_START(do_suspend_lowlevel)
51 call save_processor_state
53 movq $saved_context, %rax
54 movq %rsp, pt_regs_sp(%rax)
55 movq %rbp, pt_regs_bp(%rax)
56 movq %rsi, pt_regs_si(%rax)
57 movq %rdi, pt_regs_di(%rax)
58 movq %rbx, pt_regs_bx(%rax)
59 movq %rcx, pt_regs_cx(%rax)
60 movq %rdx, pt_regs_dx(%rax)
61 movq %r8, pt_regs_r8(%rax)
62 movq %r9, pt_regs_r9(%rax)
63 movq %r10, pt_regs_r10(%rax)
64 movq %r11, pt_regs_r11(%rax)
65 movq %r12, pt_regs_r12(%rax)
66 movq %r13, pt_regs_r13(%rax)
67 movq %r14, pt_regs_r14(%rax)
68 movq %r15, pt_regs_r15(%rax)
70 popq pt_regs_flags(%rax)
72 movq $.Lresume_point, saved_rip(%rip)
83 call x86_acpi_enter_sleep_state
84 /* in case something went wrong, restore the machine status and go on */
89 /* We don't restore %rax, it must be 0 anyway */
90 movq $saved_context, %rax
91 movq saved_context_cr4(%rax), %rbx
93 movq saved_context_cr3(%rax), %rbx
95 movq saved_context_cr2(%rax), %rbx
97 movq saved_context_cr0(%rax), %rbx
99 pushq pt_regs_flags(%rax)
101 movq pt_regs_sp(%rax), %rsp
102 movq pt_regs_bp(%rax), %rbp
103 movq pt_regs_si(%rax), %rsi
104 movq pt_regs_di(%rax), %rdi
105 movq pt_regs_bx(%rax), %rbx
106 movq pt_regs_cx(%rax), %rcx
107 movq pt_regs_dx(%rax), %rdx
108 movq pt_regs_r8(%rax), %r8
109 movq pt_regs_r9(%rax), %r9
110 movq pt_regs_r10(%rax), %r10
111 movq pt_regs_r11(%rax), %r11
112 movq pt_regs_r12(%rax), %r12
113 movq pt_regs_r13(%rax), %r13
114 movq pt_regs_r14(%rax), %r14
115 movq pt_regs_r15(%rax), %r15
117 #if defined(CONFIG_KASAN) && CONFIG_KASAN_STACK
119 * The suspend path may have poisoned some areas deeper in the stack,
120 * which we now need to unpoison.
123 call kasan_unpoison_task_stack_below
129 jmp restore_processor_state
130 SYM_FUNC_END(do_suspend_lowlevel)
141 SYM_DATA(saved_magic, .quad 0)