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