100 lines
1.9 KiB
ArmAsm
100 lines
1.9 KiB
ArmAsm
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/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/linkage.h>
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#define AX 0
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#define BX 1 * 8
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#define CX 2 * 8
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#define DX 3 * 8
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#define SI 4 * 8
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#define DI 5 * 8
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#define BP 6 * 8
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#define SP 7 * 8
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#define IP 8 * 8
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#define FLAGS 9 * 8
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#define CS 10 * 8
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#define SS 11 * 8
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#define DS 12 * 8
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#define ES 13 * 8
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#define FS 14 * 8
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#define GS 15 * 8
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#define R8 16 * 8
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#define R9 17 * 8
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#define R10 18 * 8
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#define R11 19 * 8
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#define R12 20 * 8
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#define R13 21 * 8
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#define R14 22 * 8
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#define R15 23 * 8
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.text
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#ifdef HAVE_ARCH_X86_64_SUPPORT
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SYM_FUNC_START(perf_regs_load)
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movq %rax, AX(%rdi)
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movq %rbx, BX(%rdi)
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movq %rcx, CX(%rdi)
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movq %rdx, DX(%rdi)
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movq %rsi, SI(%rdi)
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movq %rdi, DI(%rdi)
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movq %rbp, BP(%rdi)
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leaq 8(%rsp), %rax /* exclude this call. */
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movq %rax, SP(%rdi)
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movq 0(%rsp), %rax
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movq %rax, IP(%rdi)
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movq $0, FLAGS(%rdi)
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movq $0, CS(%rdi)
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movq $0, SS(%rdi)
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movq $0, DS(%rdi)
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movq $0, ES(%rdi)
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movq $0, FS(%rdi)
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movq $0, GS(%rdi)
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movq %r8, R8(%rdi)
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movq %r9, R9(%rdi)
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movq %r10, R10(%rdi)
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movq %r11, R11(%rdi)
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movq %r12, R12(%rdi)
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movq %r13, R13(%rdi)
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movq %r14, R14(%rdi)
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movq %r15, R15(%rdi)
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ret
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SYM_FUNC_END(perf_regs_load)
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#else
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SYM_FUNC_START(perf_regs_load)
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push %edi
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movl 8(%esp), %edi
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movl %eax, AX(%edi)
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movl %ebx, BX(%edi)
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movl %ecx, CX(%edi)
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movl %edx, DX(%edi)
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movl %esi, SI(%edi)
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pop %eax
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movl %eax, DI(%edi)
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movl %ebp, BP(%edi)
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leal 4(%esp), %eax /* exclude this call. */
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movl %eax, SP(%edi)
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movl 0(%esp), %eax
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movl %eax, IP(%edi)
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movl $0, FLAGS(%edi)
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movl $0, CS(%edi)
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movl $0, SS(%edi)
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movl $0, DS(%edi)
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movl $0, ES(%edi)
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movl $0, FS(%edi)
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movl $0, GS(%edi)
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ret
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SYM_FUNC_END(perf_regs_load)
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#endif
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/*
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* We need to provide note.GNU-stack section, saying that we want
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* NOT executable stack. Otherwise the final linking will assume that
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* the ELF stack should not be restricted at all and set it RWX.
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*/
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.section .note.GNU-stack,"",@progbits
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