• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /* Capstone Disassembler Engine */
2 /* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013> */
3 
4 #include <stdio.h>
5 #include <stdlib.h>
6 
7 #include <platform.h>
8 #include <capstone.h>
9 
10 struct platform {
11 	cs_arch arch;
12 	cs_mode mode;
13 	unsigned char *code;
14 	size_t size;
15 	char *comment;
16 };
17 
18 static csh handle;
19 
print_string_hex(char * comment,unsigned char * str,size_t len)20 static void print_string_hex(char *comment, unsigned char *str, size_t len)
21 {
22 	unsigned char *c;
23 
24 	printf("%s", comment);
25 	for (c = str; c < str + len; c++) {
26 		printf("0x%02x ", *c & 0xff);
27 	}
28 
29 	printf("\n");
30 }
31 
print_insn_detail(cs_insn * ins)32 static void print_insn_detail(cs_insn *ins)
33 {
34 	int i;
35 	cs_mips *mips;
36 
37 	// detail can be NULL on "data" instruction if SKIPDATA option is turned ON
38 	if (ins->detail == NULL)
39 		return;
40 
41 	mips = &(ins->detail->mips);
42 	if (mips->op_count)
43 		printf("\top_count: %u\n", mips->op_count);
44 
45 	for (i = 0; i < mips->op_count; i++) {
46 		cs_mips_op *op = &(mips->operands[i]);
47 		switch((int)op->type) {
48 			default:
49 				break;
50 			case MIPS_OP_REG:
51 				printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg));
52 				break;
53 			case MIPS_OP_IMM:
54 				printf("\t\toperands[%u].type: IMM = 0x%" PRIx64 "\n", i, op->imm);
55 				break;
56 			case MIPS_OP_MEM:
57 				printf("\t\toperands[%u].type: MEM\n", i);
58 				if (op->mem.base != X86_REG_INVALID)
59 					printf("\t\t\toperands[%u].mem.base: REG = %s\n",
60 							i, cs_reg_name(handle, op->mem.base));
61 				if (op->mem.disp != 0)
62 					printf("\t\t\toperands[%u].mem.disp: 0x%" PRIx64 "\n", i, op->mem.disp);
63 
64 				break;
65 		}
66 
67 	}
68 
69 	printf("\n");
70 }
71 
test()72 static void test()
73 {
74 //#define MIPS_CODE "\x8f\xa2\x00\x00"
75 //#define MIPS_CODE "\x00\x00\xa7\xac\x10\x00\xa2\x8f"
76 //#define MIPS_CODE "\x21\x30\xe6\x70"	// clo $6, $7
77 //#define MIPS_CODE "\x00\x00\x00\x00" // nop
78 //#define MIPS_CODE "\xc6\x23\xe9\xe4"	// swc1	$f9, 0x23c6($7)
79 //#define MIPS_CODE "\x21\x38\x00\x01"	// move $7, $8
80 #define MIPS_CODE "\x0C\x10\x00\x97\x00\x00\x00\x00\x24\x02\x00\x0c\x8f\xa2\x00\x00\x34\x21\x34\x56"
81 //#define MIPS_CODE "\x04\x11\x00\x01"	// bal	0x8
82 #define MIPS_CODE2 "\x56\x34\x21\x34\xc2\x17\x01\x00"
83 #define MIPS_32R6M "\x00\x07\x00\x07\x00\x11\x93\x7c\x01\x8c\x8b\x7c\x00\xc7\x48\xd0"
84 #define MIPS_32R6 "\xec\x80\x00\x19\x7c\x43\x22\xa0"
85 
86 	struct platform platforms[] = {
87 		{
88 			CS_ARCH_MIPS,
89 			(cs_mode)(CS_MODE_MIPS32 + CS_MODE_BIG_ENDIAN),
90 			(unsigned char *)MIPS_CODE,
91 			sizeof(MIPS_CODE) - 1,
92 			"MIPS-32 (Big-endian)"
93 		},
94 		{
95 			CS_ARCH_MIPS,
96 			(cs_mode)(CS_MODE_MIPS64 + CS_MODE_LITTLE_ENDIAN),
97 			(unsigned char *)MIPS_CODE2,
98 			sizeof(MIPS_CODE2) - 1,
99 			"MIPS-64-EL (Little-endian)"
100 		},
101 		{
102 			CS_ARCH_MIPS,
103 			(cs_mode)(CS_MODE_MIPS32R6 + CS_MODE_MICRO + CS_MODE_BIG_ENDIAN),
104 			(unsigned char*)MIPS_32R6M,
105 			sizeof(MIPS_32R6M) - 1,
106 			"MIPS-32R6 | Micro (Big-endian)"
107 		},
108 		{
109 			CS_ARCH_MIPS,
110 			(cs_mode)(CS_MODE_MIPS32R6 + CS_MODE_BIG_ENDIAN),
111 			(unsigned char*)MIPS_32R6,
112 			sizeof(MIPS_32R6) - 1,
113 			"MIPS-32R6 (Big-endian)"
114 		},
115 	};
116 
117 	uint64_t address = 0x1000;
118 	cs_insn *insn;
119 	int i;
120 	size_t count;
121 
122 	for (i = 0; i < sizeof(platforms)/sizeof(platforms[0]); i++) {
123 		cs_err err = cs_open(platforms[i].arch, platforms[i].mode, &handle);
124 		if (err) {
125 			printf("Failed on cs_open() with error returned: %u\n", err);
126 			continue;
127 		}
128 
129 		cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON);
130 
131 		count = cs_disasm(handle, platforms[i].code, platforms[i].size, address, 0, &insn);
132 		if (count) {
133 			size_t j;
134 
135 			printf("****************\n");
136 			printf("Platform: %s\n", platforms[i].comment);
137 			print_string_hex("Code:", platforms[i].code, platforms[i].size);
138 			printf("Disasm:\n");
139 
140 			for (j = 0; j < count; j++) {
141 				printf("0x%" PRIx64 ":\t%s\t%s\n", insn[j].address, insn[j].mnemonic, insn[j].op_str);
142 				print_insn_detail(&insn[j]);
143 			}
144 			printf("0x%" PRIx64 ":\n", insn[j-1].address + insn[j-1].size);
145 
146 			// free memory allocated by cs_disasm()
147 			cs_free(insn, count);
148 		} else {
149 			printf("****************\n");
150 			printf("Platform: %s\n", platforms[i].comment);
151 			print_string_hex("Code:", platforms[i].code, platforms[i].size);
152 			printf("ERROR: Failed to disasm given code!\n");
153 		}
154 
155 		printf("\n");
156 
157 		cs_close(&handle);
158 	}
159 }
160 
main()161 int main()
162 {
163 	test();
164 
165 	return 0;
166 }
167