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99 lines
1.9 KiB
99 lines
1.9 KiB
/* 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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