1 /* Capstone Disassembler Engine */
2 /* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013 */
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
get_bc_name(int bc)31 static const char* get_bc_name(int bc)
32 {
33 switch(bc) {
34 default:
35 case PPC_BC_INVALID:
36 return ("invalid");
37 case PPC_BC_LT:
38 return ("lt");
39 case PPC_BC_LE:
40 return ("le");
41 case PPC_BC_EQ:
42 return ("eq");
43 case PPC_BC_GE:
44 return ("ge");
45 case PPC_BC_GT:
46 return ("gt");
47 case PPC_BC_NE:
48 return ("ne");
49 case PPC_BC_UN:
50 return ("un");
51 case PPC_BC_NU:
52 return ("nu");
53 case PPC_BC_SO:
54 return ("so");
55 case PPC_BC_NS:
56 return ("ns");
57 }
58 }
59
print_insn_detail(cs_insn * ins)60 static void print_insn_detail(cs_insn *ins)
61 {
62 cs_ppc *ppc;
63 int i;
64
65 // detail can be NULL on "data" instruction if SKIPDATA option is turned ON
66 if (ins->detail == NULL)
67 return;
68
69 ppc = &(ins->detail->ppc);
70 if (ppc->op_count)
71 printf("\top_count: %u\n", ppc->op_count);
72
73 for (i = 0; i < ppc->op_count; i++) {
74 cs_ppc_op *op = &(ppc->operands[i]);
75 switch((int)op->type) {
76 default:
77 break;
78 case PPC_OP_REG:
79 printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg));
80 break;
81 case PPC_OP_IMM:
82 printf("\t\toperands[%u].type: IMM = 0x%" PRIx64 "\n", i, op->imm);
83 break;
84 case PPC_OP_MEM:
85 printf("\t\toperands[%u].type: MEM\n", i);
86 if (op->mem.base != PPC_REG_INVALID)
87 printf("\t\t\toperands[%u].mem.base: REG = %s\n",
88 i, cs_reg_name(handle, op->mem.base));
89 if (op->mem.disp != 0)
90 printf("\t\t\toperands[%u].mem.disp: 0x%x\n", i, op->mem.disp);
91
92 break;
93 case PPC_OP_CRX:
94 printf("\t\toperands[%u].type: CRX\n", i);
95 printf("\t\t\toperands[%u].crx.scale: %d\n", i, op->crx.scale);
96 printf("\t\t\toperands[%u].crx.reg: %s\n", i, cs_reg_name(handle, op->crx.reg));
97 printf("\t\t\toperands[%u].crx.cond: %s\n", i, get_bc_name(op->crx.cond));
98 break;
99 }
100 }
101
102 if (ppc->bc != 0)
103 printf("\tBranch code: %u\n", ppc->bc);
104
105 if (ppc->bh != 0)
106 printf("\tBranch hint: %u\n", ppc->bh);
107
108 if (ppc->update_cr0)
109 printf("\tUpdate-CR0: True\n");
110
111 printf("\n");
112 }
113
test()114 static void test()
115 {
116 #define PPC_CODE "\x43\x20\x0c\x07\x41\x56\xff\x17\x80\x20\x00\x00\x80\x3f\x00\x00\x10\x43\x23\x0e\xd0\x44\x00\x80\x4c\x43\x22\x02\x2d\x03\x00\x80\x7c\x43\x20\x14\x7c\x43\x20\x93\x4f\x20\x00\x21\x4c\xc8\x00\x21\x40\x82\x00\x14"
117 #define PPC_CODE2 "\x10\x60\x2a\x10\x10\x64\x28\x88\x7c\x4a\x5d\x0f"
118
119 struct platform platforms[] = {
120 {
121 CS_ARCH_PPC,
122 CS_MODE_BIG_ENDIAN,
123 (unsigned char*)PPC_CODE,
124 sizeof(PPC_CODE) - 1,
125 "PPC-64",
126 },
127 {
128 CS_ARCH_PPC,
129 (cs_mode)(CS_MODE_BIG_ENDIAN + CS_MODE_QPX),
130 (unsigned char*)PPC_CODE2,
131 sizeof(PPC_CODE2) - 1,
132 "PPC-64 + QPX",
133 },
134 };
135
136 uint64_t address = 0x1000;
137 cs_insn *insn;
138 int i;
139 size_t count;
140
141 for (i = 0; i < sizeof(platforms)/sizeof(platforms[0]); i++) {
142 cs_err err = cs_open(platforms[i].arch, platforms[i].mode, &handle);
143 if (err) {
144 printf("Failed on cs_open() with error returned: %u\n", err);
145 abort();
146 }
147
148 cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON);
149
150 count = cs_disasm(handle, platforms[i].code, platforms[i].size, address, 0, &insn);
151 if (count) {
152 size_t j;
153
154 printf("****************\n");
155 printf("Platform: %s\n", platforms[i].comment);
156 print_string_hex("Code:", platforms[i].code, platforms[i].size);
157 printf("Disasm:\n");
158
159 for (j = 0; j < count; j++) {
160 printf("0x%" PRIx64 ":\t%s\t%s\n", insn[j].address, insn[j].mnemonic, insn[j].op_str);
161 print_insn_detail(&insn[j]);
162 }
163 printf("0x%" PRIx64 ":\n", insn[j-1].address + insn[j-1].size);
164
165 // free memory allocated by cs_disasm()
166 cs_free(insn, count);
167 } else {
168 printf("****************\n");
169 printf("Platform: %s\n", platforms[i].comment);
170 print_string_hex("Code:", platforms[i].code, platforms[i].size);
171 printf("ERROR: Failed to disasm given code!\n");
172 abort();
173 }
174
175 printf("\n");
176
177 cs_close(&handle);
178 }
179 }
180
main()181 int main()
182 {
183 test();
184
185 return 0;
186 }
187