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
|
#include <stdio.h>
#define TRANSFORM_DIS_VERBOSE 1
#include "transform-dis.c"
#include <stdlib.h>
int main(UNUSED int argc, char **argv) {
static uint8_t in[1048576];
UNUSED size_t size = fread(in, 1, sizeof(in), stdin);
int patch_size = atoi(argv[1]);
struct arch_dis_ctx arch;
memset(&arch, 0, sizeof(arch));
#ifdef TARGET_arm
int thumb = atoi(argv[2]);
arch.pc_low_bit = thumb;
#endif
uint8_t out[patch_size * 10];
int offsets[patch_size + 1];
void *rewritten_ptr = out;
printf("\n#if 0\n");
int ret = transform_dis_main(
in,
&rewritten_ptr,
0x10000,
0x10000 + patch_size,
arch,
offsets);
printf("=> %d\n", ret);
printf("#endif\n");
int print_out_idx = 0;
int print_in_idx = 0;
if (!ret) {
printf("// total length: %zd\n", (uint8_t *) rewritten_ptr - out);
for(int ii = 0; ii <= patch_size; ii++) {
int oi = offsets[ii];
if(oi != -1) {
int in_size = ii - print_in_idx;
int out_size = oi - print_out_idx;
if (in_size != out_size || memcmp(out + print_out_idx, in + print_in_idx, in_size)) {
printf("at_%x: nop; nop; nop\n", print_in_idx);
printf(" .byte ");
while(print_in_idx++ < ii)
printf("0x%02x%s", in[print_in_idx-1], print_in_idx == ii ? "" : ", ");
printf("\nnop // -->\n .byte ");
while(print_out_idx++ < oi)
printf("0x%02x%s", out[print_out_idx-1], print_out_idx == oi ? "" : ", ");
printf("\n");
}
print_in_idx = ii;
print_out_idx = oi;
printf("/* 0x%x: 0x%x */\n", ii, oi);
}
}
}
}
|
