Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 1 | /* Capstone Disassembler Engine */ |
| 2 | /* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013> */ |
| 3 | |
| 4 | #include <stdio.h> |
| 5 | #include <stdlib.h> |
| 6 | #include <string.h> |
| 7 | #include <capstone.h> |
| 8 | |
| 9 | #include "cs_priv.h" |
| 10 | |
| 11 | #include "MCRegisterInfo.h" |
| 12 | |
danghvu | 34d49d9 | 2013-12-19 12:10:24 -0600 | [diff] [blame] | 13 | #include "arch.h" |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 14 | #include "utils.h" |
| 15 | |
Nguyen Anh Quynh | 36df4bb | 2013-12-10 13:31:20 +0800 | [diff] [blame] | 16 | void cs_version(int *major, int *minor) |
| 17 | { |
| 18 | *major = CS_API_MAJOR; |
| 19 | *minor = CS_API_MINOR; |
| 20 | } |
| 21 | |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 22 | cs_err cs_errno(csh handle) |
| 23 | { |
| 24 | if (!handle) |
| 25 | return CS_ERR_CSH; |
| 26 | |
| 27 | cs_struct *ud = (cs_struct *)(uintptr_t)handle; |
| 28 | |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 29 | return ud->errnum; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 30 | } |
| 31 | |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 32 | cs_err cs_open(cs_arch arch, cs_mode mode, csh *handle) |
| 33 | { |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 34 | cs_struct *ud; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 35 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 36 | ud = calloc(1, sizeof(*ud)); |
| 37 | if (!ud) { |
| 38 | // memory insufficient |
| 39 | return CS_ERR_MEM; |
| 40 | } |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 41 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 42 | ud->errnum = CS_ERR_OK; |
| 43 | ud->arch = arch; |
| 44 | ud->mode = mode; |
| 45 | ud->big_endian = mode & CS_MODE_BIG_ENDIAN; |
| 46 | ud->reg_name = NULL; |
| 47 | ud->detail = CS_OPT_ON; // by default break instruction into details |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 48 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 49 | init_arch[ud->arch](ud); |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 50 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 51 | *handle = (uintptr_t)ud; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 52 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 53 | return CS_ERR_OK; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | cs_err cs_close(csh handle) |
| 57 | { |
| 58 | if (!handle) |
| 59 | return CS_ERR_CSH; |
| 60 | |
| 61 | cs_struct *ud = (cs_struct *)(uintptr_t)handle; |
| 62 | |
| 63 | switch (ud->arch) { |
| 64 | case CS_ARCH_X86: |
| 65 | break; |
| 66 | case CS_ARCH_ARM: |
| 67 | case CS_ARCH_MIPS: |
| 68 | case CS_ARCH_ARM64: |
| 69 | free(ud->printer_info); |
| 70 | break; |
| 71 | default: // unsupported architecture |
| 72 | return CS_ERR_HANDLE; |
| 73 | } |
| 74 | |
| 75 | memset(ud, 0, sizeof(*ud)); |
| 76 | free(ud); |
| 77 | |
| 78 | return CS_ERR_OK; |
| 79 | } |
| 80 | |
Nguyen Anh Quynh | 8f13f3c | 2013-12-04 22:57:04 +0800 | [diff] [blame] | 81 | #define MIN(x, y) ((x) < (y) ? (x) : (y)) |
| 82 | |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 83 | // fill insn with mnemonic & operands info |
| 84 | static void fill_insn(cs_struct *handle, cs_insn *insn, char *buffer, MCInst *mci, |
pancake | f0e4eed | 2013-12-11 22:14:42 +0100 | [diff] [blame] | 85 | PostPrinter_t printer, const uint8_t *code) |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 86 | { |
Nguyen Anh Quynh | a209e67 | 2013-12-14 00:23:41 +0800 | [diff] [blame] | 87 | if (handle->detail) { |
| 88 | memcpy(insn, &mci->pub_insn, sizeof(*insn)); |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 89 | |
Nguyen Anh Quynh | a209e67 | 2013-12-14 00:23:41 +0800 | [diff] [blame] | 90 | // fill the instruction bytes |
| 91 | memcpy(insn->bytes, code, MIN(sizeof(insn->bytes), insn->size)); |
Nguyen Anh Quynh | ad61c49 | 2013-11-30 16:23:31 +0800 | [diff] [blame] | 92 | |
Nguyen Anh Quynh | a209e67 | 2013-12-14 00:23:41 +0800 | [diff] [blame] | 93 | } else { |
| 94 | insn->address = mci->address; |
| 95 | insn->size = mci->insn_size; |
| 96 | } |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 97 | |
Nguyen Anh Quynh | 4d3e852 | 2013-12-14 10:45:09 +0800 | [diff] [blame] | 98 | // map internal instruction opcode to public insn ID |
| 99 | if (handle->insn_id) |
| 100 | handle->insn_id(insn, MCInst_getOpcode(mci), handle->detail); |
| 101 | |
| 102 | // alias instruction might have ID saved in OpcodePub |
| 103 | if (MCInst_getOpcodePub(mci)) |
| 104 | insn->id = MCInst_getOpcodePub(mci); |
| 105 | |
| 106 | // post printer handles some corner cases (hacky) |
| 107 | if (printer) |
| 108 | printer((csh)handle, insn, buffer); |
| 109 | |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 110 | // fill in mnemonic & operands |
Nguyen Anh Quynh | defb9bc | 2013-12-12 14:00:12 +0800 | [diff] [blame] | 111 | // find first space or tab |
| 112 | char *sp = buffer; |
| 113 | for (sp = buffer; *sp; sp++) |
| 114 | if (*sp == ' '||*sp == '\t') |
| 115 | break; |
| 116 | if (*sp) { |
| 117 | *sp = '\0'; |
Nguyen Anh Quynh | 86dc393 | 2013-12-12 14:43:39 +0800 | [diff] [blame] | 118 | // find the next non-space char |
| 119 | sp++; |
| 120 | for (; ((*sp == ' ') || (*sp == '\t')); sp++); |
| 121 | strncpy(insn->op_str, sp, sizeof(insn->op_str) - 1); |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 122 | insn->op_str[sizeof(insn->op_str) - 1] = '\0'; |
| 123 | } else |
| 124 | insn->op_str[0] = '\0'; |
| 125 | |
| 126 | strncpy(insn->mnemonic, buffer, sizeof(insn->mnemonic) - 1); |
| 127 | insn->mnemonic[sizeof(insn->mnemonic) - 1] = '\0'; |
| 128 | } |
| 129 | |
Nguyen Anh Quynh | da8adad | 2013-12-04 09:44:07 +0800 | [diff] [blame] | 130 | cs_err cs_option(csh ud, cs_opt_type type, size_t value) |
Nguyen Anh Quynh | 01aba00 | 2013-12-03 21:00:09 +0800 | [diff] [blame] | 131 | { |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 132 | cs_struct *handle = (cs_struct *)(uintptr_t)ud; |
| 133 | if (!handle) |
| 134 | return CS_ERR_CSH; |
Nguyen Anh Quynh | 01aba00 | 2013-12-03 21:00:09 +0800 | [diff] [blame] | 135 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 136 | switch(type) { |
| 137 | default: |
| 138 | break; |
| 139 | case CS_OPT_DETAIL: |
| 140 | handle->detail = value; |
| 141 | return CS_ERR_OK; |
| 142 | case CS_OPT_SYNTAX: |
| 143 | switch (handle->arch) { |
| 144 | default: |
| 145 | // only selected archs care about CS_OPT_SYNTAX |
| 146 | handle->errnum = CS_ERR_OPTION; |
| 147 | return CS_ERR_OPTION; |
Nguyen Anh Quynh | a209e67 | 2013-12-14 00:23:41 +0800 | [diff] [blame] | 148 | |
danghvu | 34d49d9 | 2013-12-19 12:10:24 -0600 | [diff] [blame] | 149 | #ifdef CS_SUPPORT_X86 |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 150 | case CS_ARCH_X86: |
| 151 | switch(value) { |
| 152 | default: |
| 153 | // wrong syntax value |
| 154 | handle->errnum = CS_ERR_OPTION; |
| 155 | return CS_ERR_OPTION; |
Nguyen Anh Quynh | 041e25d | 2013-12-06 00:37:32 +0800 | [diff] [blame] | 156 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 157 | case CS_OPT_SYNTAX_INTEL: |
| 158 | handle->printer = X86_Intel_printInst; |
| 159 | break; |
Nguyen Anh Quynh | 041e25d | 2013-12-06 00:37:32 +0800 | [diff] [blame] | 160 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 161 | case CS_OPT_SYNTAX_ATT: |
| 162 | handle->printer = X86_ATT_printInst; |
| 163 | break; |
| 164 | } |
| 165 | break; |
danghvu | 34d49d9 | 2013-12-19 12:10:24 -0600 | [diff] [blame] | 166 | #endif |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 167 | } |
| 168 | break; |
Nguyen Anh Quynh | 041e25d | 2013-12-06 00:37:32 +0800 | [diff] [blame] | 169 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 170 | case CS_OPT_MODE: // change engine's mode at run-time |
| 171 | handle->mode = value; |
| 172 | switch (handle->arch) { |
| 173 | default: |
| 174 | // only selected archs care about CS_OPT_SYNTAX |
| 175 | break; |
danghvu | 34d49d9 | 2013-12-19 12:10:24 -0600 | [diff] [blame] | 176 | #ifdef CS_SUPPORT_ARM |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 177 | case CS_ARCH_ARM: |
| 178 | if (value & CS_MODE_THUMB) |
| 179 | handle->disasm = Thumb_getInstruction; |
| 180 | else |
| 181 | handle->disasm = ARM_getInstruction; |
Nguyen Anh Quynh | 1bdb23a | 2013-12-20 00:04:26 +0800 | [diff] [blame] | 182 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 183 | handle->mode = value; |
| 184 | break; |
danghvu | 34d49d9 | 2013-12-19 12:10:24 -0600 | [diff] [blame] | 185 | #endif |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 186 | #ifdef CS_SUPPORT_AARCH64t |
| 187 | case CS_ARCH_MIPS: |
| 188 | if (value & CS_MODE_32) |
| 189 | handle->disasm = Mips_getInstruction; |
| 190 | else |
| 191 | handle->disasm = Mips64_getInstruction; |
Nguyen Anh Quynh | 1bdb23a | 2013-12-20 00:04:26 +0800 | [diff] [blame] | 192 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 193 | handle->mode = value; |
| 194 | break; |
danghvu | 34d49d9 | 2013-12-19 12:10:24 -0600 | [diff] [blame] | 195 | #endif |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 196 | } |
| 197 | break; |
| 198 | } |
Nguyen Anh Quynh | 01aba00 | 2013-12-03 21:00:09 +0800 | [diff] [blame] | 199 | |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 200 | return CS_ERR_OK; |
Nguyen Anh Quynh | 01aba00 | 2013-12-03 21:00:09 +0800 | [diff] [blame] | 201 | } |
| 202 | |
pancake | f0e4eed | 2013-12-11 22:14:42 +0100 | [diff] [blame] | 203 | size_t cs_disasm(csh ud, const uint8_t *buffer, size_t size, uint64_t offset, size_t count, cs_insn *insn) |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 204 | { |
| 205 | cs_struct *handle = (cs_struct *)(uintptr_t)ud; |
| 206 | MCInst mci; |
| 207 | uint16_t insn_size; |
Nguyen Anh Quynh | b42a657 | 2013-11-29 17:40:07 +0800 | [diff] [blame] | 208 | size_t c = 0; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 209 | |
| 210 | if (!handle) { |
| 211 | // FIXME: handle this case? |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 212 | // handle->errnum = CS_ERR_HANDLE; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 213 | return 0; |
| 214 | } |
| 215 | |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 216 | handle->errnum = CS_ERR_OK; |
Nguyen Anh Quynh | 4d3e852 | 2013-12-14 10:45:09 +0800 | [diff] [blame] | 217 | memset(insn, 0, count * sizeof(*insn)); |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 218 | |
| 219 | while (size > 0) { |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 220 | MCInst_Init(&mci); |
Nguyen Anh Quynh | 1f44928 | 2013-12-15 14:04:59 +0800 | [diff] [blame] | 221 | mci.detail = handle->detail; |
| 222 | mci.mode = handle->mode; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 223 | |
| 224 | bool r = handle->disasm(ud, buffer, size, &mci, &insn_size, offset, handle->getinsn_info); |
| 225 | if (r) { |
| 226 | SStream ss; |
| 227 | SStream_Init(&ss); |
| 228 | |
Nguyen Anh Quynh | a209e67 | 2013-12-14 00:23:41 +0800 | [diff] [blame] | 229 | // relative branches need to know the address & size of current insn |
| 230 | mci.insn_size = insn_size; |
| 231 | mci.address = offset; |
| 232 | |
Nguyen Anh Quynh | 4d3e852 | 2013-12-14 10:45:09 +0800 | [diff] [blame] | 233 | if (handle->detail) { |
Nguyen Anh Quynh | 4d3e852 | 2013-12-14 10:45:09 +0800 | [diff] [blame] | 234 | // save all the information for non-detailed mode |
| 235 | mci.pub_insn.address = offset; |
| 236 | mci.pub_insn.size = insn_size; |
Nguyen Anh Quynh | a209e67 | 2013-12-14 00:23:41 +0800 | [diff] [blame] | 237 | } |
| 238 | |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 239 | handle->printer(&mci, &ss, handle->printer_info); |
| 240 | |
Joxean | 114df0e | 2013-12-04 07:11:32 +0100 | [diff] [blame] | 241 | fill_insn(handle, insn, ss.buffer, &mci, handle->post_printer, buffer); |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 242 | |
| 243 | c++; |
| 244 | insn++; |
| 245 | buffer += insn_size; |
| 246 | size -= insn_size; |
| 247 | offset += insn_size; |
| 248 | |
Nguyen Anh Quynh | 9a0dbab | 2013-12-15 22:25:58 +0800 | [diff] [blame] | 249 | if (c == count) |
| 250 | return c; |
Nguyen Anh Quynh | 8f13f3c | 2013-12-04 22:57:04 +0800 | [diff] [blame] | 251 | } else |
Nguyen Anh Quynh | 9a0dbab | 2013-12-15 22:25:58 +0800 | [diff] [blame] | 252 | // face a broken instruction? then we stop here |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 253 | return c; |
| 254 | } |
| 255 | |
| 256 | return c; |
| 257 | } |
| 258 | |
| 259 | // dynamicly allocate memory to contain disasm insn |
| 260 | // NOTE: caller must free() the allocated memory itself to avoid memory leaking |
pancake | f0e4eed | 2013-12-11 22:14:42 +0100 | [diff] [blame] | 261 | size_t cs_disasm_dyn(csh ud, const uint8_t *buffer, size_t size, uint64_t offset, size_t count, cs_insn **insn) |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 262 | { |
| 263 | cs_struct *handle = (cs_struct *)(uintptr_t)ud; |
| 264 | MCInst mci; |
| 265 | uint16_t insn_size; |
Nguyen Anh Quynh | b42a657 | 2013-11-29 17:40:07 +0800 | [diff] [blame] | 266 | size_t c = 0, f = 0; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 267 | cs_insn insn_cache[64]; |
| 268 | void *total = NULL; |
Nguyen Anh Quynh | b42a657 | 2013-11-29 17:40:07 +0800 | [diff] [blame] | 269 | size_t total_size = 0; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 270 | |
| 271 | if (!handle) { |
| 272 | // FIXME: how to handle this case: |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 273 | // handle->errnum = CS_ERR_HANDLE; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 274 | return 0; |
| 275 | } |
| 276 | |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 277 | handle->errnum = CS_ERR_OK; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 278 | |
Nguyen Anh Quynh | 4d3e852 | 2013-12-14 10:45:09 +0800 | [diff] [blame] | 279 | memset(insn_cache, 0, sizeof(insn_cache)); |
| 280 | |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 281 | while (size > 0) { |
danghvu | 2b19296 | 2013-12-19 22:40:28 -0600 | [diff] [blame^] | 282 | MCInst_Init(&mci); |
Nguyen Anh Quynh | 1f44928 | 2013-12-15 14:04:59 +0800 | [diff] [blame] | 283 | mci.detail = handle->detail; |
| 284 | mci.mode = handle->mode; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 285 | |
| 286 | bool r = handle->disasm(ud, buffer, size, &mci, &insn_size, offset, handle->getinsn_info); |
| 287 | if (r) { |
| 288 | SStream ss; |
| 289 | SStream_Init(&ss); |
| 290 | |
Nguyen Anh Quynh | a209e67 | 2013-12-14 00:23:41 +0800 | [diff] [blame] | 291 | // relative branches need to know the address & size of current insn |
| 292 | mci.insn_size = insn_size; |
| 293 | mci.address = offset; |
| 294 | |
Nguyen Anh Quynh | 4d3e852 | 2013-12-14 10:45:09 +0800 | [diff] [blame] | 295 | if (handle->detail) { |
Nguyen Anh Quynh | 4d3e852 | 2013-12-14 10:45:09 +0800 | [diff] [blame] | 296 | // save all the information for non-detailed mode |
| 297 | mci.pub_insn.address = offset; |
| 298 | mci.pub_insn.size = insn_size; |
Nguyen Anh Quynh | a209e67 | 2013-12-14 00:23:41 +0800 | [diff] [blame] | 299 | } |
| 300 | |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 301 | handle->printer(&mci, &ss, handle->printer_info); |
| 302 | |
Joxean | 114df0e | 2013-12-04 07:11:32 +0100 | [diff] [blame] | 303 | fill_insn(handle, &insn_cache[f], ss.buffer, &mci, handle->post_printer, buffer); |
Nguyen Anh Quynh | a209e67 | 2013-12-14 00:23:41 +0800 | [diff] [blame] | 304 | |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 305 | f++; |
| 306 | |
| 307 | if (f == ARR_SIZE(insn_cache)) { |
| 308 | // resize total to contain newly disasm insns |
| 309 | total_size += sizeof(insn_cache); |
| 310 | void *tmp = realloc(total, total_size); |
| 311 | if (tmp == NULL) { // insufficient memory |
| 312 | free(total); |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 313 | handle->errnum = CS_ERR_MEM; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 314 | return 0; |
| 315 | } |
| 316 | |
| 317 | total = tmp; |
| 318 | memcpy(total + total_size - sizeof(insn_cache), insn_cache, sizeof(insn_cache)); |
| 319 | // reset f back to 0 |
| 320 | f = 0; |
| 321 | } |
| 322 | |
| 323 | c++; |
| 324 | buffer += insn_size; |
| 325 | size -= insn_size; |
| 326 | offset += insn_size; |
| 327 | |
| 328 | if (count > 0 && c == count) |
| 329 | break; |
Nguyen Anh Quynh | 8f13f3c | 2013-12-04 22:57:04 +0800 | [diff] [blame] | 330 | } else { |
| 331 | // encounter a broken instruction |
| 332 | // XXX: TODO: JOXEAN continue here |
| 333 | break; |
| 334 | } |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | if (f) { |
| 338 | // resize total to contain newly disasm insns |
| 339 | void *tmp = realloc(total, total_size + f * sizeof(insn_cache[0])); |
| 340 | if (tmp == NULL) { // insufficient memory |
| 341 | free(total); |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 342 | handle->errnum = CS_ERR_MEM; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 343 | return 0; |
| 344 | } |
| 345 | |
| 346 | total = tmp; |
| 347 | memcpy(total + total_size, insn_cache, f * sizeof(insn_cache[0])); |
| 348 | } |
| 349 | |
| 350 | *insn = total; |
| 351 | |
| 352 | return c; |
| 353 | } |
| 354 | |
| 355 | void cs_free(void *m) |
| 356 | { |
| 357 | free(m); |
| 358 | } |
| 359 | |
| 360 | // return friendly name of regiser in a string |
pancake | f0e4eed | 2013-12-11 22:14:42 +0100 | [diff] [blame] | 361 | const char *cs_reg_name(csh ud, unsigned int reg) |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 362 | { |
| 363 | cs_struct *handle = (cs_struct *)(uintptr_t)ud; |
| 364 | |
| 365 | if (!handle || handle->reg_name == NULL) { |
| 366 | return NULL; |
| 367 | } |
| 368 | |
Nguyen Anh Quynh | a253c7a | 2013-12-09 10:26:18 +0800 | [diff] [blame] | 369 | return handle->reg_name(ud, reg); |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 370 | } |
| 371 | |
pancake | f0e4eed | 2013-12-11 22:14:42 +0100 | [diff] [blame] | 372 | const char *cs_insn_name(csh ud, unsigned int insn) |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 373 | { |
| 374 | cs_struct *handle = (cs_struct *)(uintptr_t)ud; |
| 375 | |
| 376 | if (!handle || handle->insn_name == NULL) { |
| 377 | return NULL; |
| 378 | } |
| 379 | |
Nguyen Anh Quynh | a253c7a | 2013-12-09 10:26:18 +0800 | [diff] [blame] | 380 | return handle->insn_name(ud, insn); |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | static bool arr_exist(unsigned int *arr, int max, unsigned int id) |
| 384 | { |
| 385 | int i; |
| 386 | |
| 387 | for (i = 0; i < max; i++) { |
| 388 | if (arr[i] == id) |
| 389 | return true; |
| 390 | } |
| 391 | |
| 392 | return false; |
| 393 | } |
| 394 | |
| 395 | bool cs_insn_group(csh handle, cs_insn *insn, unsigned int group_id) |
| 396 | { |
| 397 | if (!handle) |
| 398 | return false; |
| 399 | |
Nguyen Anh Quynh | f35e2ad | 2013-12-03 11:10:26 +0800 | [diff] [blame] | 400 | return arr_exist(insn->groups, insn->groups_count, group_id); |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | bool cs_reg_read(csh handle, cs_insn *insn, unsigned int reg_id) |
| 404 | { |
| 405 | if (!handle) |
| 406 | return false; |
| 407 | |
Nguyen Anh Quynh | f35e2ad | 2013-12-03 11:10:26 +0800 | [diff] [blame] | 408 | return arr_exist(insn->regs_read, insn->regs_read_count, reg_id); |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 409 | } |
| 410 | |
| 411 | bool cs_reg_write(csh handle, cs_insn *insn, unsigned int reg_id) |
| 412 | { |
| 413 | if (!handle) |
| 414 | return false; |
| 415 | |
Nguyen Anh Quynh | f35e2ad | 2013-12-03 11:10:26 +0800 | [diff] [blame] | 416 | return arr_exist(insn->regs_write, insn->regs_write_count, reg_id); |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | int cs_op_count(csh ud, cs_insn *insn, unsigned int op_type) |
| 420 | { |
| 421 | if (!ud) |
| 422 | return -1; |
| 423 | |
| 424 | cs_struct *handle = (cs_struct *)(uintptr_t)ud; |
| 425 | unsigned int count = 0, i; |
| 426 | |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 427 | handle->errnum = CS_ERR_OK; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 428 | |
| 429 | switch (handle->arch) { |
| 430 | default: |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 431 | handle->errnum = CS_ERR_HANDLE; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 432 | return -1; |
| 433 | case CS_ARCH_ARM: |
| 434 | for (i = 0; i < insn->arm.op_count; i++) |
| 435 | if (insn->arm.operands[i].type == op_type) |
| 436 | count++; |
| 437 | break; |
| 438 | case CS_ARCH_ARM64: |
| 439 | for (i = 0; i < insn->arm64.op_count; i++) |
| 440 | if (insn->arm64.operands[i].type == op_type) |
| 441 | count++; |
| 442 | break; |
| 443 | case CS_ARCH_X86: |
| 444 | for (i = 0; i < insn->x86.op_count; i++) |
| 445 | if (insn->x86.operands[i].type == op_type) |
| 446 | count++; |
| 447 | break; |
| 448 | case CS_ARCH_MIPS: |
| 449 | for (i = 0; i < insn->mips.op_count; i++) |
| 450 | if (insn->mips.operands[i].type == op_type) |
| 451 | count++; |
| 452 | break; |
| 453 | } |
| 454 | |
| 455 | return count; |
| 456 | } |
| 457 | |
| 458 | int cs_op_index(csh ud, cs_insn *insn, unsigned int op_type, |
| 459 | unsigned int post) |
| 460 | { |
| 461 | if (!ud) |
| 462 | return -1; |
| 463 | |
| 464 | cs_struct *handle = (cs_struct *)(uintptr_t)ud; |
| 465 | unsigned int count = 0, i; |
| 466 | |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 467 | handle->errnum = CS_ERR_OK; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 468 | |
| 469 | switch (handle->arch) { |
| 470 | default: |
Nguyen Anh Quynh | 3eb9ac9 | 2013-11-27 15:24:47 +0800 | [diff] [blame] | 471 | handle->errnum = CS_ERR_HANDLE; |
Nguyen Anh Quynh | 26ee41a | 2013-11-27 12:11:31 +0800 | [diff] [blame] | 472 | return -1; |
| 473 | case CS_ARCH_ARM: |
| 474 | for (i = 0; i < insn->arm.op_count; i++) { |
| 475 | if (insn->arm.operands[i].type == op_type) |
| 476 | count++; |
| 477 | if (count == post) |
| 478 | return i; |
| 479 | } |
| 480 | break; |
| 481 | case CS_ARCH_ARM64: |
| 482 | for (i = 0; i < insn->arm64.op_count; i++) { |
| 483 | if (insn->arm64.operands[i].type == op_type) |
| 484 | count++; |
| 485 | if (count == post) |
| 486 | return i; |
| 487 | } |
| 488 | break; |
| 489 | case CS_ARCH_X86: |
| 490 | for (i = 0; i < insn->x86.op_count; i++) { |
| 491 | if (insn->x86.operands[i].type == op_type) |
| 492 | count++; |
| 493 | if (count == post) |
| 494 | return i; |
| 495 | } |
| 496 | break; |
| 497 | case CS_ARCH_MIPS: |
| 498 | for (i = 0; i < insn->mips.op_count; i++) { |
| 499 | if (insn->mips.operands[i].type == op_type) |
| 500 | count++; |
| 501 | if (count == post) |
| 502 | return i; |
| 503 | } |
| 504 | break; |
| 505 | } |
| 506 | |
| 507 | return -1; |
| 508 | } |