/* SPDX-License-Identifier: GPL-2.0-only */ .text #include <linux/linkage.h> #include <linux/objtool.h> #include <asm/segment.h> #include <asm/pgtable_types.h> #include <asm/page_types.h> #include <asm/msr.h> #include <asm/asm-offsets.h> #include <asm/frame.h> #include <asm/nospec-branch.h> # Copyright 2003 Pavel Machek <pavel@suse.cz .code64 /* * Hooray, we are in Long 64-bit mode (but still running in low memory) */ SYM_FUNC_START(wakeup_long64) movq saved_magic(%rip), %rax movq $0x123456789abcdef0, %rdx cmpq %rdx, %rax je 2f /* stop here on a saved_magic mismatch */ movq $0xbad6d61676963, %rcx 1: jmp 1b 2: movw $__KERNEL_DS, %ax movw %ax, %ss movw %ax, %ds movw %ax, %es movw %ax, %fs movw %ax, %gs movq saved_rsp(%rip), %rsp movq saved_rbx(%rip), %rbx movq saved_rdi(%rip), %rdi movq saved_rsi(%rip), %rsi movq saved_rbp(%rip), %rbp movq saved_rip(%rip), %rax ANNOTATE_RETPOLINE_SAFE jmp *%rax SYM_FUNC_END(wakeup_long64) SYM_FUNC_START(do_suspend_lowlevel) FRAME_BEGIN subq $8, %rsp xorl %eax, %eax call save_processor_state movq $saved_context, %rax movq %rsp, pt_regs_sp(%rax) movq %rbp, pt_regs_bp(%rax) movq %rsi, pt_regs_si(%rax) movq %rdi, pt_regs_di(%rax) movq %rbx, pt_regs_bx(%rax) movq %rcx, pt_regs_cx(%rax) movq %rdx, pt_regs_dx(%rax) movq %r8, pt_regs_r8(%rax) movq %r9, pt_regs_r9(%rax) movq %r10, pt_regs_r10(%rax) movq %r11, pt_regs_r11(%rax) movq %r12, pt_regs_r12(%rax) movq %r13, pt_regs_r13(%rax) movq %r14, pt_regs_r14(%rax) movq %r15, pt_regs_r15(%rax) pushfq popq pt_regs_flags(%rax) movq $.Lresume_point, saved_rip(%rip) movq %rsp, saved_rsp(%rip) movq %rbp, saved_rbp(%rip) movq %rbx, saved_rbx(%rip) movq %rdi, saved_rdi(%rip) movq %rsi, saved_rsi(%rip) addq $8, %rsp movl $3, %edi xorl %eax, %eax call x86_acpi_enter_sleep_state /* in case something went wrong, restore the machine status and go on */ jmp .Lresume_point .align 4 .Lresume_point: /* We don't restore %rax, it must be 0 anyway */ movq $saved_context, %rax movq saved_context_cr4(%rax), %rbx movq %rbx, %cr4 movq saved_context_cr3(%rax), %rbx movq %rbx, %cr3 movq saved_context_cr2(%rax), %rbx movq %rbx, %cr2 movq saved_context_cr0(%rax), %rbx movq %rbx, %cr0 pushq pt_regs_flags(%rax) popfq movq pt_regs_sp(%rax), %rsp movq pt_regs_bp(%rax), %rbp movq pt_regs_si(%rax), %rsi movq pt_regs_di(%rax), %rdi movq pt_regs_bx(%rax), %rbx movq pt_regs_cx(%rax), %rcx movq pt_regs_dx(%rax), %rdx movq pt_regs_r8(%rax), %r8 movq pt_regs_r9(%rax), %r9 movq pt_regs_r10(%rax), %r10 movq pt_regs_r11(%rax), %r11 movq pt_regs_r12(%rax), %r12 movq pt_regs_r13(%rax), %r13 movq pt_regs_r14(%rax), %r14 movq pt_regs_r15(%rax), %r15 #if defined(CONFIG_KASAN) && defined(CONFIG_KASAN_STACK) /* * The suspend path may have poisoned some areas deeper in the stack, * which we now need to unpoison. */ movq %rsp, %rdi call kasan_unpoison_task_stack_below #endif xorl %eax, %eax addq $8, %rsp FRAME_END jmp restore_processor_state SYM_FUNC_END(do_suspend_lowlevel) STACK_FRAME_NON_STANDARD do_suspend_lowlevel .data saved_rbp: .quad 0 saved_rsi: .quad 0 saved_rdi: .quad 0 saved_rbx: .quad 0 saved_rip: .quad 0 saved_rsp: .quad 0 SYM_DATA(saved_magic, .quad 0)
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