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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/* target operations */
#include <linux/types.h>
#define intptr_t long
#define uintptr_t unsigned long
/* These three macro definitions are generic, just shorthands
used by the generated code. */
#define op_abs(x) (x < 0 ? -x : x)
#define fetch_bitfield(target, base, higherbits, nbits) \
target = (((base) >> (sizeof (base) * 8 - (higherbits) - (nbits))) \
& (((__typeof (base)) 1 << (nbits)) - 1))
#define store_bitfield(target, base, higherbits, nbits) \
target = (target \
&~ ((((__typeof (base)) 1 << (nbits)) - 1) \
<< (sizeof (base) * 8 - (higherbits) - (nbits))) \
| ((__typeof (base)) (value) \
<< (sizeof (base) * 8 - (higherbits) - (nbits))))
/* These operations are target-specific. */
#include <asm/uaccess.h>
#define fetch_register(regno) ((intptr_t) regs->dwarf_register_##regno)
#if defined __i386__
#define dwarf_register_0 eax
#define dwarf_register_1 ecx
#define dwarf_register_2 edx
#define dwarf_register_3 ebx
#define dwarf_register_4 esp
#define dwarf_register_5 ebp
#define dwarf_register_6 esi
#define dwarf_register_7 edi
#elif defined __x86_64__
#define dwarf_register_0 eax
#define dwarf_register_1 edx
#define dwarf_register_2 ecx
#define dwarf_register_3 ebx
#define dwarf_register_4 esi
#define dwarf_register_5 edi
#define dwarf_register_6 ebp
#define dwarf_register_7 esp
#define dwarf_register_8 r8
#define dwarf_register_9 r9
#define dwarf_register_10 r10
#define dwarf_register_11 r11
#define dwarf_register_12 r12
#define dwarf_register_13 r13
#define dwarf_register_14 r14
#define dwarf_register_15 r15
#elif defined __powerpc__
#undef fetch_register
#define fetch_register(regno) ((intptr_t) regs->gpr[regno])
#endif
#if defined __i386__ || defined __x86_64__
#define deref(size, addr) \
({ \
int _bad = 0; \
u8 _b; u16 _w; u32 _l; u64 _q; \
intptr_t _v; \
switch (size) \
{ \
case 1: __get_user_asm(_b,addr,_bad,"b","b","=q",1); _v = _b; break; \
case 2: __get_user_asm(_w,addr,_bad,"w","w","=r",1); _v = _w; break; \
case 4: __get_user_asm(_l,addr,_bad,"l","","=r",1); _v = _l; break; \
case 8: __get_user_asm(_q,addr,_bad,"q","","=r",1); _v = _q; break; \
default: _v = __get_user_bad(); \
} \
if (_bad) \
goto deref_fault; \
_v; \
})
#elif defined __powerpc64__
#define deref(size, addr) \
({ \
int _bad = 0; \
intptr_t _v; \
switch (size) \
{ \
case 1: __get_user_asm(_v,addr,_bad,"lbz",1); break; \
case 2: __get_user_asm(_v,addr,_bad,"lhz",1); break; \
case 4: __get_user_asm(_v,addr,_bad,"lwz",1); break; \
case 8: __get_user_asm(_v,addr,_bad,"ld",1); break; \
default: _v = __get_user_bad(); \
} \
if (_bad) \
goto deref_fault; \
_v; \
})
#elif defined __powerpc__
#define deref(size, addr) \
({ \
int _bad = 0; \
intptr_t _v; \
switch (size) \
{ \
case 1: __get_user_asm(_v,addr,_bad,"lbz"); break; \
case 2: __get_user_asm(_v,addr,_bad,"lhz"); break; \
case 4: __get_user_asm(_v,addr,_bad,"lwz"); break; \
case 8: __get_user_asm(_v,addr,_bad,"ld"); break; \
default: _v = __get_user_bad(); \
} \
if (_bad) \
goto deref_fault; \
_v; \
})
#endif
|
