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1 /* Capstone Disassembler Engine */
2 /* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2014 */
3 
4 #include <stdio.h>
5 
6 #include <platform.h>
7 #include <capstone.h>
8 
9 struct platform {
10 	cs_arch arch;
11 	cs_mode mode;
12 	unsigned char *code;
13 	size_t size;
14 	char *comment;
15 };
16 
17 static csh handle;
18 
print_string_hex(char * comment,unsigned char * str,size_t len)19 static void print_string_hex(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_xcore *xcore;
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 	xcore = &(ins->detail->xcore);
41 	if (xcore->op_count)
42 		printf("\top_count: %u\n", xcore->op_count);
43 
44 	for (i = 0; i < xcore->op_count; i++) {
45 		cs_xcore_op *op = &(xcore->operands[i]);
46 		switch((int)op->type) {
47 			default:
48 				break;
49 			case XCORE_OP_REG:
50 				printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg));
51 				break;
52 			case XCORE_OP_IMM:
53 				printf("\t\toperands[%u].type: IMM = 0x%x\n", i, op->imm);
54 				break;
55 			case XCORE_OP_MEM:
56 				printf("\t\toperands[%u].type: MEM\n", i);
57 				if (op->mem.base != XCORE_REG_INVALID)
58 					printf("\t\t\toperands[%u].mem.base: REG = %s\n",
59 							i, cs_reg_name(handle, op->mem.base));
60 				if (op->mem.index != XCORE_REG_INVALID)
61 					printf("\t\t\toperands[%u].mem.index: REG = %s\n",
62 							i, cs_reg_name(handle, op->mem.index));
63 				if (op->mem.disp != 0)
64 					printf("\t\t\toperands[%u].mem.disp: 0x%x\n", i, op->mem.disp);
65 				if (op->mem.direct != 1)
66 					printf("\t\t\toperands[%u].mem.direct: -1\n", i);
67 
68 
69 				break;
70 		}
71 	}
72 
73 	printf("\n");
74 }
75 
test()76 static void test()
77 {
78 #define XCORE_CODE "\xfe\x0f\xfe\x17\x13\x17\xc6\xfe\xec\x17\x97\xf8\xec\x4f\x1f\xfd\xec\x37\x07\xf2\x45\x5b\xf9\xfa\x02\x06\x1b\x10\x09\xfd\xec\xa7"
79 
80 	struct platform platforms[] = {
81 		{
82 			CS_ARCH_XCORE,
83 			CS_MODE_BIG_ENDIAN,
84 			(unsigned char*)XCORE_CODE,
85 			sizeof(XCORE_CODE) - 1,
86 			"XCore",
87 		},
88 	};
89 
90 	uint64_t address = 0x1000;
91 	cs_insn *insn;
92 	int i;
93 	size_t count;
94 
95 	for (i = 0; i < sizeof(platforms)/sizeof(platforms[0]); i++) {
96 		cs_err err = cs_open(platforms[i].arch, platforms[i].mode, &handle);
97 		if (err) {
98 			printf("Failed on cs_open() with error returned: %u\n", err);
99 			continue;
100 		}
101 
102 		cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON);
103 
104 		count = cs_disasm(handle, platforms[i].code, platforms[i].size, address, 0, &insn);
105 		if (count) {
106 			size_t j;
107 
108 			printf("****************\n");
109 			printf("Platform: %s\n", platforms[i].comment);
110 			print_string_hex("Code:", platforms[i].code, platforms[i].size);
111 			printf("Disasm:\n");
112 
113 			for (j = 0; j < count; j++) {
114 				printf("0x%" PRIx64 ":\t%s\t%s\n", insn[j].address, insn[j].mnemonic, insn[j].op_str);
115 				print_insn_detail(&insn[j]);
116 			}
117 			printf("0x%" PRIx64 ":\n", insn[j-1].address + insn[j-1].size);
118 
119 			// free memory allocated by cs_disasm()
120 			cs_free(insn, count);
121 		} else {
122 			printf("****************\n");
123 			printf("Platform: %s\n", platforms[i].comment);
124 			print_string_hex("Code:", platforms[i].code, platforms[i].size);
125 			printf("ERROR: Failed to disasm given code!\n");
126 		}
127 
128 		printf("\n");
129 
130 		cs_close(&handle);
131 	}
132 }
133 
main()134 int main()
135 {
136 	test();
137 
138 	return 0;
139 }
140