1#include <linux/linkage.h>
2
3#define AX	 0
4#define BX	 1 * 8
5#define CX	 2 * 8
6#define DX	 3 * 8
7#define SI	 4 * 8
8#define DI	 5 * 8
9#define BP	 6 * 8
10#define SP	 7 * 8
11#define IP	 8 * 8
12#define FLAGS	 9 * 8
13#define CS	10 * 8
14#define SS	11 * 8
15#define DS	12 * 8
16#define ES	13 * 8
17#define FS	14 * 8
18#define GS	15 * 8
19#define R8	16 * 8
20#define R9	17 * 8
21#define R10	18 * 8
22#define R11	19 * 8
23#define R12	20 * 8
24#define R13	21 * 8
25#define R14	22 * 8
26#define R15	23 * 8
27
28.text
29#ifdef HAVE_ARCH_X86_64_SUPPORT
30ENTRY(perf_regs_load)
31	movq %rax, AX(%rdi)
32	movq %rbx, BX(%rdi)
33	movq %rcx, CX(%rdi)
34	movq %rdx, DX(%rdi)
35	movq %rsi, SI(%rdi)
36	movq %rdi, DI(%rdi)
37	movq %rbp, BP(%rdi)
38
39	leaq 8(%rsp), %rax /* exclude this call.  */
40	movq %rax, SP(%rdi)
41
42	movq 0(%rsp), %rax
43	movq %rax, IP(%rdi)
44
45	movq $0, FLAGS(%rdi)
46	movq $0, CS(%rdi)
47	movq $0, SS(%rdi)
48	movq $0, DS(%rdi)
49	movq $0, ES(%rdi)
50	movq $0, FS(%rdi)
51	movq $0, GS(%rdi)
52
53	movq %r8,  R8(%rdi)
54	movq %r9,  R9(%rdi)
55	movq %r10, R10(%rdi)
56	movq %r11, R11(%rdi)
57	movq %r12, R12(%rdi)
58	movq %r13, R13(%rdi)
59	movq %r14, R14(%rdi)
60	movq %r15, R15(%rdi)
61	ret
62ENDPROC(perf_regs_load)
63#else
64ENTRY(perf_regs_load)
65	push %edi
66	movl 8(%esp), %edi
67	movl %eax, AX(%edi)
68	movl %ebx, BX(%edi)
69	movl %ecx, CX(%edi)
70	movl %edx, DX(%edi)
71	movl %esi, SI(%edi)
72	pop %eax
73	movl %eax, DI(%edi)
74	movl %ebp, BP(%edi)
75
76	leal 4(%esp), %eax /* exclude this call.  */
77	movl %eax, SP(%edi)
78
79	movl 0(%esp), %eax
80	movl %eax, IP(%edi)
81
82	movl $0, FLAGS(%edi)
83	movl $0, CS(%edi)
84	movl $0, SS(%edi)
85	movl $0, DS(%edi)
86	movl $0, ES(%edi)
87	movl $0, FS(%edi)
88	movl $0, GS(%edi)
89	ret
90ENDPROC(perf_regs_load)
91#endif
92
93/*
94 * We need to provide note.GNU-stack section, saying that we want
95 * NOT executable stack. Otherwise the final linking will assume that
96 * the ELF stack should not be restricted at all and set it RWX.
97 */
98.section .note.GNU-stack,"",@progbits
99