| /* SPDX-License-Identifier: GPL-2.0-only */ |
| .text |
| #include <linux/linkage.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> |
| |
| # Copyright 2003 Pavel Machek <pavel@suse.cz |
| |
| .code64 |
| /* |
| * Hooray, we are in Long 64-bit mode (but still running in low memory) |
| */ |
| ENTRY(wakeup_long64) |
| movq saved_magic, %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, %rsp |
| |
| movq saved_rbx, %rbx |
| movq saved_rdi, %rdi |
| movq saved_rsi, %rsi |
| movq saved_rbp, %rbp |
| |
| movq saved_rip, %rax |
| jmp *%rax |
| ENDPROC(wakeup_long64) |
| |
| ENTRY(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 |
| movq %rbp, saved_rbp |
| movq %rbx, saved_rbx |
| movq %rdi, saved_rdi |
| movq %rsi, saved_rsi |
| |
| 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 |
| |
| #ifdef CONFIG_KASAN |
| /* |
| * 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 |
| ENDPROC(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 |
| |
| ENTRY(saved_magic) .quad 0 |
