diff options
Diffstat (limited to 'utils/disassembler/arm/main.c')
-rw-r--r-- | utils/disassembler/arm/main.c | 264 |
1 files changed, 132 insertions, 132 deletions
diff --git a/utils/disassembler/arm/main.c b/utils/disassembler/arm/main.c index 0edc633785..674696405c 100644 --- a/utils/disassembler/arm/main.c +++ b/utils/disassembler/arm/main.c | |||
@@ -1,132 +1,132 @@ | |||
1 | #include <stdio.h> | 1 | #include <stdio.h> |
2 | #include <string.h> | 2 | #include <string.h> |
3 | #include <stdlib.h> | 3 | #include <stdlib.h> |
4 | #include <stdint.h> | 4 | #include <stdint.h> |
5 | 5 | ||
6 | #define ULONG uint32_t | 6 | #define ULONG uint32_t |
7 | #define USHORT uint16_t | 7 | #define USHORT uint16_t |
8 | #define UCHAR uint8_t | 8 | #define UCHAR uint8_t |
9 | 9 | ||
10 | ULONG isdata[1000000]; /* each bit defines one byte as: code=0, data=1 */ | 10 | ULONG isdata[1000000]; /* each bit defines one byte as: code=0, data=1 */ |
11 | 11 | ||
12 | extern void dis_asm(ULONG off, ULONG val, char *stg); | 12 | extern void dis_asm(ULONG off, ULONG val, char *stg); |
13 | 13 | ||
14 | int static inline le2int(unsigned char* buf) | 14 | int static inline le2int(unsigned char* buf) |
15 | { | 15 | { |
16 | int32_t res = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; | 16 | int32_t res = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; |
17 | 17 | ||
18 | return res; | 18 | return res; |
19 | } | 19 | } |
20 | 20 | ||
21 | int main(int argc, char **argv) | 21 | int main(int argc, char **argv) |
22 | { | 22 | { |
23 | FILE *in, *out; | 23 | FILE *in, *out; |
24 | char *ptr, stg[256]; | 24 | char *ptr, stg[256]; |
25 | unsigned char buf[4]; | 25 | unsigned char buf[4]; |
26 | ULONG pos, sz, val, loop; | 26 | ULONG pos, sz, val, loop; |
27 | int offset, offset1; | 27 | int offset, offset1; |
28 | USHORT regid; | 28 | USHORT regid; |
29 | 29 | ||
30 | if(argc == 1 || strcmp(argv[1], "--help") == 0) | 30 | if(argc == 1 || strcmp(argv[1], "--help") == 0) |
31 | { printf("Usage: arm_disass [input file]\n"); | 31 | { printf("Usage: arm_disass [input file]\n"); |
32 | printf(" disassembles input file to 'disasm.txt'\n"); | 32 | printf(" disassembles input file to 'disasm.txt'\n"); |
33 | exit(-1); | 33 | exit(-1); |
34 | } | 34 | } |
35 | 35 | ||
36 | in = fopen(argv[1], "rb"); | 36 | in = fopen(argv[1], "rb"); |
37 | if(in == NULL) | 37 | if(in == NULL) |
38 | { printf("Cannot open %s", argv[1]); | 38 | { printf("Cannot open %s", argv[1]); |
39 | exit(-1); | 39 | exit(-1); |
40 | } | 40 | } |
41 | 41 | ||
42 | out = fopen("disasm.txt", "w"); | 42 | out = fopen("disasm.txt", "w"); |
43 | if(out == NULL) exit(-1); | 43 | if(out == NULL) exit(-1); |
44 | 44 | ||
45 | fseek(in, 0, SEEK_END); | 45 | fseek(in, 0, SEEK_END); |
46 | sz = ftell(in); | 46 | sz = ftell(in); |
47 | 47 | ||
48 | /* first loop only sets data/code tags */ | 48 | /* first loop only sets data/code tags */ |
49 | for(loop=0; loop<2; loop++) | 49 | for(loop=0; loop<2; loop++) |
50 | { | 50 | { |
51 | for(pos=0; pos<sz; pos+=4) | 51 | for(pos=0; pos<sz; pos+=4) |
52 | { | 52 | { |
53 | /* clear disassembler string start */ | 53 | /* clear disassembler string start */ |
54 | memset(stg, 0, 40); | 54 | memset(stg, 0, 40); |
55 | /* read next code dword */ | 55 | /* read next code dword */ |
56 | fseek(in, pos, SEEK_SET); | 56 | fseek(in, pos, SEEK_SET); |
57 | fread(buf, 1, 4, in); | 57 | fread(buf, 1, 4, in); |
58 | 58 | ||
59 | val = le2int(buf); | 59 | val = le2int(buf); |
60 | 60 | ||
61 | /* check for data tag set: if 1 byte out of 4 is marked => assume data */ | 61 | /* check for data tag set: if 1 byte out of 4 is marked => assume data */ |
62 | if((isdata[pos>>5] & (0xf << (pos & 31))) || (val & 0xffff0000) == 0) | 62 | if((isdata[pos>>5] & (0xf << (pos & 31))) || (val & 0xffff0000) == 0) |
63 | { | 63 | { |
64 | sprintf(stg, "%6x: %08x", pos, val); | 64 | sprintf(stg, "%6x: %08x", pos, val); |
65 | } | 65 | } |
66 | else | 66 | else |
67 | { | 67 | { |
68 | dis_asm(pos, val, stg); | 68 | dis_asm(pos, val, stg); |
69 | 69 | ||
70 | /* check for instant mov operation */ | 70 | /* check for instant mov operation */ |
71 | if(memcmp(stg+17, "mov ", 4) == 0 && (ptr=strstr(stg, "0x")) != NULL) | 71 | if(memcmp(stg+17, "mov ", 4) == 0 && (ptr=strstr(stg, "0x")) != NULL) |
72 | { | 72 | { |
73 | regid = *(USHORT*)(stg+22); | 73 | regid = *(USHORT*)(stg+22); |
74 | 74 | ||
75 | sscanf(ptr+2, "%x", &offset); | 75 | sscanf(ptr+2, "%x", &offset); |
76 | if(ptr[-1] == '-') | 76 | if(ptr[-1] == '-') |
77 | offset = -offset; | 77 | offset = -offset; |
78 | } | 78 | } |
79 | else | 79 | else |
80 | /* check for add/sub operation */ | 80 | /* check for add/sub operation */ |
81 | if((ptr=strstr(stg, "0x")) != NULL | 81 | if((ptr=strstr(stg, "0x")) != NULL |
82 | && (memcmp(stg+17, "add ", 4) == 0 || memcmp(stg+17, "sub ", 4) == 0)) | 82 | && (memcmp(stg+17, "add ", 4) == 0 || memcmp(stg+17, "sub ", 4) == 0)) |
83 | { | 83 | { |
84 | if(regid == *(USHORT*)(stg+22) && regid == *(USHORT*)(stg+26)) | 84 | if(regid == *(USHORT*)(stg+22) && regid == *(USHORT*)(stg+26)) |
85 | { | 85 | { |
86 | sscanf(ptr+2, "%x", &offset1); | 86 | sscanf(ptr+2, "%x", &offset1); |
87 | if(ptr[-1] == '-') | 87 | if(ptr[-1] == '-') |
88 | offset1 = -offset1; | 88 | offset1 = -offset1; |
89 | 89 | ||
90 | if(memcmp(stg+17, "add ", 4) == 0) offset += offset1; | 90 | if(memcmp(stg+17, "add ", 4) == 0) offset += offset1; |
91 | else offset -= offset1; | 91 | else offset -= offset1; |
92 | 92 | ||
93 | /* add result to disassembler string */ | 93 | /* add result to disassembler string */ |
94 | sprintf(stg+strlen(stg), " <- 0x%x", offset); | 94 | sprintf(stg+strlen(stg), " <- 0x%x", offset); |
95 | } | 95 | } |
96 | else | 96 | else |
97 | regid = 0; | 97 | regid = 0; |
98 | } | 98 | } |
99 | else | 99 | else |
100 | regid = 0; | 100 | regid = 0; |
101 | 101 | ||
102 | /* check for const data */ | 102 | /* check for const data */ |
103 | if(memcmp(stg+26, "[pc, ", 5) == 0 && (ptr=strstr(stg, "0x")) != NULL) | 103 | if(memcmp(stg+26, "[pc, ", 5) == 0 && (ptr=strstr(stg, "0x")) != NULL) |
104 | { | 104 | { |
105 | sscanf(ptr+2, "%x", &offset); | 105 | sscanf(ptr+2, "%x", &offset); |
106 | if(ptr[-1] == '-') | 106 | if(ptr[-1] == '-') |
107 | offset = -offset; | 107 | offset = -offset; |
108 | 108 | ||
109 | /* add data tag */ | 109 | /* add data tag */ |
110 | isdata[(pos+offset+8)>>5] |= 1 << ((pos+offset+8) & 31); | 110 | isdata[(pos+offset+8)>>5] |= 1 << ((pos+offset+8) & 31); |
111 | 111 | ||
112 | /* add const data to disassembler string */ | 112 | /* add const data to disassembler string */ |
113 | fseek(in, pos+offset+8, SEEK_SET); | 113 | fseek(in, pos+offset+8, SEEK_SET); |
114 | fread(&buf, 1, 4, in); | 114 | fread(&buf, 1, 4, in); |
115 | offset = le2int(buf); | 115 | offset = le2int(buf); |
116 | 116 | ||
117 | sprintf(stg+strlen(stg), " <- 0x%x", offset); | 117 | sprintf(stg+strlen(stg), " <- 0x%x", offset); |
118 | } | 118 | } |
119 | } | 119 | } |
120 | 120 | ||
121 | /* remove trailing spaces */ | 121 | /* remove trailing spaces */ |
122 | while(stg[strlen(stg)-1] == 32) | 122 | while(stg[strlen(stg)-1] == 32) |
123 | stg[strlen(stg)-1] = 0; | 123 | stg[strlen(stg)-1] = 0; |
124 | 124 | ||
125 | if(loop == 1) | 125 | if(loop == 1) |
126 | fprintf(out, "%s\n", stg); | 126 | fprintf(out, "%s\n", stg); |
127 | } | 127 | } |
128 | } | 128 | } |
129 | 129 | ||
130 | fclose(in); | 130 | fclose(in); |
131 | return 0; | 131 | return 0; |
132 | } | 132 | } |