#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