1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
#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
|
