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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
// This should be compiled as ARM code.
#include <stdio.h>
#include <malloc.h>
typedef unsigned int UInt;
__attribute__((noinline)) UInt do_ldrt_A1_imm_132 ( unsigned char* p )
{
UInt res;
__asm__ __volatile__(
// Twice do ldrt for testing post-indexed.
"mov r5, %1 ; ldrt r6, [r5], #+132 ; ldrt r6, [r5], #132 ; mov %0, r6"
: "=r"(res) : "r"(p) : "r5", "r6"
);
return res;
}
__attribute__((noinline)) UInt do_ldrt_A2_imm_132 ( unsigned char* p )
{
UInt res;
__asm__ __volatile__(
// Twice ldrt for testing post-indexed.
"mov r5, %1 ; mov r6, #33; ldrt r7, [r5], +r6, lsl #2 ; ldrt r7, [r5], +r6, lsl #2 ; mov %0, r7"
: "=r"(res) : "r"(p) : "r5", "r6", "r7"
);
return res;
}
__attribute__((noinline)) UInt do_ldrbt_A1_imm_2 (unsigned char* val)
{
UInt res;
__asm__ __volatile__(
// Twice ldrbt for testing post-indexed.
"mov r4, %1 ; ldrbt r5, [r4], #+2; ldrbt r5, [r4], #+2; mov %0, r5"
: "=r"(res) : "r"(val) : "r4", "r5"
);
return res;
}
__attribute__((noinline)) UInt do_ldrbt_A2_imm_2 (unsigned char* val)
{
UInt res;
__asm__ __volatile__(
// Twice ldrbt for testing post-indexed.
"mov r4, %1 ; mov r5, #4; ldrbt r6, [r4], +r5, lsr #2 ; ldrbt r6, [r4], +r5, lsr #2; mov %0, r6"
: "=r"(res) : "r"(val) : "r4", "r5", "r6"
);
return res;
}
__attribute__((noinline)) UInt do_ldrht_A1_imm_m2 (unsigned char* val)
{
UInt res;
__asm__ __volatile__(
// Twice ldrht for testing post-indexed.
"mov r4, %1 ; ldrht r5, [r4], #-2 ; ldrht r5, [r4], #-2 ; mov %0, r5"
: "=r"(res) : "r"(val) : "r4", "r5"
);
return res;
}
__attribute__((noinline)) UInt do_ldrht_A2_imm_m2 (unsigned char* val)
{
UInt res;
__asm__ __volatile__(
// Twice ldrht for testing post-indexed.
"mov r4, %1 ; mov r5, #2 ; ldrht r6, [r4], -r5 ; ldrht r6, [r4], -r5 ; mov %0, r6"
: "=r"(res) : "r"(val) : "r4", "r5", "r6"
);
return res;
}
__attribute__((noinline)) UInt do_ldrsht_A1_imm_m2 (unsigned char* val)
{
UInt res;
__asm__ __volatile__(
// Twice ldrsht for testing post-indexed.
"mov r4, %1 ; ldrsht r5, [r4], #-2 ; ldrsht r5, [r4], #-2 ; mov %0, r5"
: "=r"(res) : "r"(val) : "r4", "r5"
);
return res;
}
__attribute__((noinline)) UInt do_ldrsht_A2_imm_1 (unsigned char* val)
{
UInt res;
__asm__ __volatile__(
// Twice ldrsht for testing post-indexed.
"mov r4, %1 ; mov r5, #1 ; ldrsht r6, [r4], r5 ; ldrsht r6, [r4], r5 ; mov %0, r6"
: "=r"(res) : "r"(val) : "r4", "r5", "r6"
);
return res;
}
__attribute__((noinline)) UInt do_ldrsbt_A1_imm_1 (unsigned char* val)
{
UInt res;
__asm__ __volatile__(
// Twice ldrsbt for testing post-indexed.
"mov r4, %1 ; ldrsbt r5, [r4], #1 ; ldrsbt r5, [r4], #1 ; mov %0, r5"
: "=r"(res) : "r"(val) : "r4", "r5"
);
return res;
}
__attribute__((noinline)) UInt do_ldrsbt_A2_imm_1 (unsigned char* val)
{
UInt res;
__asm__ __volatile__(
// Twice ldrsbt for testing post-indexed.
"mov r4, %1 ; mov r5, #1 ; ldrsbt r6, [r4], r5 ; ldrsbt r6, [r4], r5 ; mov %0, r6"
: "=r"(res) : "r"(val) : "r4", "r5", "r6"
);
return res;
}
__attribute__((noinline)) void do_strbt_A1_imm_1 (unsigned char* val)
{
__asm__ __volatile__(
// Twice strbt for testing post-indexed.
"mov r4, %0 ; mov r5, #0xCD ; strbt r5, [r4], #1 ; strbt r5, [r4], #1"
: : "r"(val) : "r4", "r5"
);
}
__attribute__((noinline)) void do_strbt_A2_imm_1 (unsigned char* val)
{
__asm__ __volatile__(
// Twice strbt for testing post-indexed.
"mov r4, %0 ; mov r5, #1 ; mov r6, #0xCD ; strbt r6, [r4], r5, LSL #1 ; strbt r6, [r4], r5"
: : "r"(val) : "r4", "r5", "r6"
);
}
__attribute__((noinline)) void do_strht_A1_imm_1 (unsigned char* val)
{
__asm__ __volatile__(
// Twice strht for testing post-indexed.
"mov r4, %0 ; ldr r5, =0xABCD ; strht r5, [r4], #1 ; strht r5, [r4], #1"
: : "r"(val) : "r4", "r5"
);
}
__attribute__((noinline)) void do_strht_A2_imm_1 (unsigned char* val)
{
__asm__ __volatile__(
// Twice strht for testing post-indexed.
"mov r4, %0 ; mov r5, #1 ; ldr r6, =0xDCBA ; strht r6, [r4], r5 ; strht r6, [r4], r5"
: : "r"(val) : "r4", "r5", "r6"
);
}
__attribute__((noinline)) void do_strt_A1_imm_4 (unsigned char* val)
{
__asm__ __volatile__(
// Twice strt for testing post-indexed.
"mov r4, %0 ; ldr r5, =0xABCDEFFF ; strt r5, [r4], #4 ; ldr r5, =0x01234567 ; strt r5, [r4], #0"
: : "r"(val) : "r4", "r5"
);
}
__attribute__((noinline)) void do_strt_A2_imm_4 (unsigned char* val)
{
__asm__ __volatile__(
// Twice strt for testing post-indexed.
"mov r4, %0 ; mov r5, #2 ; ldr r6, =0xFFFEDCBA ; strt r6, [r4], -r5, LSL #1 ; mov r5, #0 ; ldr r6, =0x76543210 ; strt r6, [r4], +r5"
: : "r"(val) : "r4", "r5", "r6"
);
}
int main ( void )
{
UInt i;
unsigned char* b = malloc(256);
for (i = 0; i < 256; i++) b[i] = (unsigned char)i;
UInt r = do_ldrt_A1_imm_132(b);
free(b);
printf("result is 0x%08x (should be 0x%08x)\n", r, 0x87868584);
UInt j;
unsigned char* c = malloc(256);
for (j = 0; j < 256; j++) c[j] = (unsigned char)j;
UInt k = do_ldrt_A2_imm_132(c);
free(c);
printf("result is 0x%08x (should be 0x%08x)\n", k, 0x87868584);
UInt val_ldrbt = (200 << 0) | (150 << 8) | (137 << 16) | (10 << 24);
printf("result is %u (should be %u)\n", do_ldrbt_A1_imm_2((unsigned char*)&val_ldrbt), 137);
UInt val_ldrbt_A2 = (200 << 0) | (150 << 8) | (137 << 16) | (10 << 24);
printf("result is %u (should be %u)\n", do_ldrbt_A2_imm_2((unsigned char*)&val_ldrbt_A2), 150);
UInt val_ldrht_A1 = (0xC8 << 0) | (0xF6 << 8) | (0xBB << 16) | (0x0A << 24);
printf("result is %u (should be %u)\n", do_ldrht_A1_imm_m2((unsigned char*)&val_ldrht_A1 + 2), 0x0000F6C8);
UInt val_ldrht_A2 = (0xC8 << 0) | (0xF7 << 8) | (0xBB << 16) | (0x0A << 24);
printf("result is %u (should be %u)\n", do_ldrht_A2_imm_m2((unsigned char*)&val_ldrht_A2 + 2), 0x0000F7C8);
UInt val_ldrsht_A1 = (0x08 << 0) | (0xFC << 8) | (0x0B << 16) | (0x0A << 24);
printf("result is %u (should be %u)\n", do_ldrsht_A1_imm_m2((unsigned char*)&val_ldrsht_A1 + 2), 0xFFFFFC08);
UInt val_ldrsht_A2 = (0xC8 << 0) | (0x0B << 8) | (0xFB << 16) | (0x0A << 24);
printf("result is %u (should be %u)\n", do_ldrsht_A2_imm_1((unsigned char*)&val_ldrsht_A2), 0xFFFFFB0B);
UInt val_ldrsbt_A1 = (0xC8 << 0) | (0xF0 << 8) | (0xCD << 16) | (0x0A << 24);
printf("result is %u (should be %u)\n", do_ldrsbt_A1_imm_1((unsigned char*)&val_ldrsbt_A1), 0xFFFFFFF0);
UInt val_ldrsbt_A2 = (0xC8 << 0) | (0xF0 << 8) | (0xFD << 16) | (0x0A << 24);
printf("result is %u (should be %u)\n", do_ldrsbt_A2_imm_1((unsigned char*)&val_ldrsbt_A2 + 1), 0xFFFFFFFD);
UInt val_strbt_A1 = (0xC8 << 0) | (0xF0 << 8) | (0xFD << 16) | (0x0A << 24);
do_strbt_A1_imm_1((unsigned char*)&val_strbt_A1);
printf("result is %u (should be %u)\n", val_strbt_A1, 0x0AFDCDCD);
UInt val_strbt_A2 = (0xC8 << 0) | (0xF0 << 8) | (0xFD << 16) | (0x0A << 24);
do_strbt_A2_imm_1((unsigned char*)&val_strbt_A2);
printf("result is %u (should be %u)\n", val_strbt_A2, 0x0ACDF0CD);
UInt val_strht_A1 = 0xFFFFFFFF;
do_strht_A1_imm_1((unsigned char*)&val_strht_A1);
printf("result is %u (should be %u)\n", val_strht_A1, 0xFFABCDCD);
UInt val_strht_A2 = 0xFFFFFFFF;
do_strht_A2_imm_1((unsigned char*)&val_strht_A2);
printf("result is %u (should be %u)\n", val_strht_A2, 0xFFDCBABA);
UInt val_strt_A1[2] = {0xFFFFFFFF, 0xFFFFFFFF};
do_strt_A1_imm_4((unsigned char*)&val_strt_A1[0]);
printf("result is %u %u (should be %u %u)\n", val_strt_A1[0], val_strt_A1[1], 0xABCDEFFF, 0x01234567);
UInt val_strt_A2[2] = {0xFFFFFFFF, 0xFFFFFFFF};
do_strt_A2_imm_4((unsigned char*)&val_strt_A2[1]);
printf("result is %u %u (should be %u %u)\n", val_strt_A2[0], val_strt_A2[1], 0x76543210, 0xFFFEDCBA);
return 0;
}
|
