1 /* Capstone Disassembler Engine */
2 /* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2019 */
3
4 #include <stdio.h>
5
6 #include <capstone/platform.h>
7 #include <capstone/capstone.h>
8
9 struct platform {
10 cs_arch arch;
11 cs_mode mode;
12 unsigned char *code;
13 size_t size;
14 const char *comment;
15 };
16
17 static csh handle;
18
print_string_hex(const char * comment,unsigned char * str,size_t len)19 static void print_string_hex(const char *comment, unsigned char *str, size_t len)
20 {
21 unsigned char *c;
22
23 printf("%s", comment);
24 for (c = str; c < str + len; c++) {
25 printf("0x%02x ", *c & 0xff);
26 }
27
28 printf("\n");
29 }
30
print_insn_detail(cs_insn * ins)31 static void print_insn_detail(cs_insn *ins)
32 {
33 cs_sysz *sysz;
34 int i;
35
36 // detail can be NULL on "data" instruction if SKIPDATA option is turned ON
37 if (ins->detail == NULL)
38 return;
39
40 sysz = &(ins->detail->sysz);
41 if (sysz->op_count)
42 printf("\top_count: %u\n", sysz->op_count);
43
44 for (i = 0; i < sysz->op_count; i++) {
45 cs_sysz_op *op = &(sysz->operands[i]);
46 switch((int)op->type) {
47 default:
48 break;
49 case SYSZ_OP_REG:
50 printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg));
51 break;
52 case SYSZ_OP_ACREG:
53 printf("\t\toperands[%u].type: ACREG = %u\n", i, op->reg);
54 break;
55 case SYSZ_OP_IMM:
56 printf("\t\toperands[%u].type: IMM = 0x%" PRIx64 "\n", i, op->imm);
57 break;
58 case SYSZ_OP_MEM:
59 printf("\t\toperands[%u].type: MEM\n", i);
60 if (op->mem.base != SYSZ_REG_INVALID)
61 printf("\t\t\toperands[%u].mem.base: REG = %s\n",
62 i, cs_reg_name(handle, op->mem.base));
63 if (op->mem.index != SYSZ_REG_INVALID)
64 printf("\t\t\toperands[%u].mem.index: REG = %s\n",
65 i, cs_reg_name(handle, op->mem.index));
66 if (op->mem.length != 0)
67 printf("\t\t\toperands[%u].mem.length: 0x%" PRIx64 "\n", i, op->mem.length);
68 if (op->mem.disp != 0)
69 printf("\t\t\toperands[%u].mem.disp: 0x%" PRIx64 "\n", i, op->mem.disp);
70
71 break;
72 }
73 }
74
75 if (sysz->cc != 0)
76 printf("\tCode condition: %u\n", sysz->cc);
77
78 printf("\n");
79 }
80
test()81 static void test()
82 {
83 #define SYSZ_CODE "\xed\x00\x00\x00\x00\x1a\x5a\x0f\x1f\xff\xc2\x09\x80\x00\x00\x00\x07\xf7\xeb\x2a\xff\xff\x7f\x57\xe3\x01\xff\xff\x7f\x57\xeb\x00\xf0\x00\x00\x24\xb2\x4f\x00\x78\xec\x18\x00\x00\xc1\x7f"
84
85 struct platform platforms[] = {
86 {
87 CS_ARCH_SYSZ,
88 CS_MODE_BIG_ENDIAN,
89 (unsigned char*)SYSZ_CODE,
90 sizeof(SYSZ_CODE) - 1,
91 "SystemZ",
92 },
93 };
94
95 uint64_t address = 0x1000;
96 cs_insn *insn;
97 int i;
98 size_t count;
99
100 for (i = 0; i < sizeof(platforms)/sizeof(platforms[0]); i++) {
101 cs_err err = cs_open(platforms[i].arch, platforms[i].mode, &handle);
102 if (err) {
103 printf("Failed on cs_open() with error returned: %u\n", err);
104 abort();
105 }
106
107 cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON);
108
109 count = cs_disasm(handle, platforms[i].code, platforms[i].size, address, 0, &insn);
110 if (count) {
111 size_t j;
112
113 printf("****************\n");
114 printf("Platform: %s\n", platforms[i].comment);
115 print_string_hex("Code:", platforms[i].code, platforms[i].size);
116 printf("Disasm:\n");
117
118 for (j = 0; j < count; j++) {
119 printf("0x%" PRIx64 ":\t%s\t%s\n", insn[j].address, insn[j].mnemonic, insn[j].op_str);
120 print_insn_detail(&insn[j]);
121 }
122 printf("0x%" PRIx64 ":\n", insn[j-1].address + insn[j-1].size);
123
124 // free memory allocated by cs_disasm()
125 cs_free(insn, count);
126 } else {
127 printf("****************\n");
128 printf("Platform: %s\n", platforms[i].comment);
129 print_string_hex("Code:", platforms[i].code, platforms[i].size);
130 printf("ERROR: Failed to disasm given code!\n");
131 abort();
132 }
133
134 printf("\n");
135
136 cs_close(&handle);
137 }
138 }
139
main()140 int main()
141 {
142 test();
143
144 return 0;
145 }
146