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/* Tang Yuhang <tyh000011112222@gmail.com> 2016 */
/* pancake <pancake@nopcode.org> 2017 */
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include "getopt.h"
#include <capstone/capstone.h>
static struct {
const char *name;
cs_arch arch;
cs_mode mode;
} all_archs[] = {
{ "arm", CS_ARCH_ARM, CS_MODE_ARM },
{ "armb", CS_ARCH_ARM, CS_MODE_ARM | CS_MODE_BIG_ENDIAN },
{ "armbe", CS_ARCH_ARM, CS_MODE_ARM | CS_MODE_BIG_ENDIAN },
{ "arml", CS_ARCH_ARM, CS_MODE_ARM | CS_MODE_LITTLE_ENDIAN },
{ "armle", CS_ARCH_ARM, CS_MODE_ARM | CS_MODE_LITTLE_ENDIAN },
{ "cortexm", CS_ARCH_ARM, CS_MODE_ARM | CS_MODE_THUMB | CS_MODE_MCLASS },
{ "thumb", CS_ARCH_ARM, CS_MODE_ARM | CS_MODE_THUMB },
{ "thumbbe", CS_ARCH_ARM, CS_MODE_ARM | CS_MODE_THUMB | CS_MODE_BIG_ENDIAN },
{ "thumble", CS_ARCH_ARM, CS_MODE_ARM | CS_MODE_THUMB | CS_MODE_LITTLE_ENDIAN },
{ "arm64", CS_ARCH_ARM64, CS_MODE_LITTLE_ENDIAN },
{ "arm64be", CS_ARCH_ARM64, CS_MODE_BIG_ENDIAN },
{ "mips", CS_ARCH_MIPS, CS_MODE_MIPS32 | CS_MODE_LITTLE_ENDIAN },
{ "mipsbe", CS_ARCH_MIPS, CS_MODE_MIPS32 | CS_MODE_BIG_ENDIAN },
{ "mips64", CS_ARCH_MIPS, CS_MODE_MIPS64 | CS_MODE_LITTLE_ENDIAN },
{ "mips64be", CS_ARCH_MIPS, CS_MODE_MIPS64 | CS_MODE_BIG_ENDIAN },
{ "x16", CS_ARCH_X86, CS_MODE_16 }, // CS_MODE_16
{ "x16att", CS_ARCH_X86, CS_MODE_16 }, // CS_MODE_16 , CS_OPT_SYNTAX_ATT
{ "x32", CS_ARCH_X86, CS_MODE_32 }, // CS_MODE_32
{ "x32att", CS_ARCH_X86, CS_MODE_32 }, // CS_MODE_32, CS_OPT_SYNTAX_ATT
{ "x64", CS_ARCH_X86, CS_MODE_64 }, // CS_MODE_64
{ "x64att", CS_ARCH_X86, CS_MODE_64 }, // CS_MODE_64, CS_OPT_SYNTAX_ATT
{ "ppc64", CS_ARCH_PPC, CS_MODE_64 | CS_MODE_LITTLE_ENDIAN },
{ "ppc64be", CS_ARCH_PPC, CS_MODE_64 | CS_MODE_BIG_ENDIAN },
{ "sparc", CS_ARCH_SPARC, CS_MODE_BIG_ENDIAN },
{ "systemz", CS_ARCH_SYSZ, CS_MODE_BIG_ENDIAN },
{ "sysz", CS_ARCH_SYSZ, CS_MODE_BIG_ENDIAN },
{ "s390x", CS_ARCH_SYSZ, CS_MODE_BIG_ENDIAN },
{ "xcore", CS_ARCH_XCORE, CS_MODE_BIG_ENDIAN },
{ "m68k", CS_ARCH_M68K, CS_MODE_BIG_ENDIAN },
{ "m68k40", CS_ARCH_M68K, CS_MODE_M68K_040 },
{ "tms320c64x", CS_ARCH_TMS320C64X, CS_MODE_BIG_ENDIAN },
{ "tms320c64x", CS_ARCH_TMS320C64X, CS_MODE_BIG_ENDIAN },
{ "m6800", CS_ARCH_M680X, CS_MODE_M680X_6800 },
{ "m6801", CS_ARCH_M680X, CS_MODE_M680X_6801 },
{ "m6805", CS_ARCH_M680X, CS_MODE_M680X_6805 },
{ "m6808", CS_ARCH_M680X, CS_MODE_M680X_6808 },
{ "m6809", CS_ARCH_M680X, CS_MODE_M680X_6809 },
{ "m6811", CS_ARCH_M680X, CS_MODE_M680X_6811 },
{ "cpu12", CS_ARCH_M680X, CS_MODE_M680X_CPU12 },
{ "hd6301", CS_ARCH_M680X, CS_MODE_M680X_6301 },
{ "hd6309", CS_ARCH_M680X, CS_MODE_M680X_6309 },
{ "hcs08", CS_ARCH_M680X, CS_MODE_M680X_HCS08 },
{ "evm", CS_ARCH_EVM, 0 },
{ "mos65xx", CS_ARCH_MOS65XX, 0 },
{ NULL }
};
void print_insn_detail_x86(csh ud, cs_mode mode, cs_insn *ins);
void print_insn_detail_arm(csh handle, cs_insn *ins);
void print_insn_detail_arm64(csh handle, cs_insn *ins);
void print_insn_detail_mips(csh handle, cs_insn *ins);
void print_insn_detail_ppc(csh handle, cs_insn *ins);
void print_insn_detail_sparc(csh handle, cs_insn *ins);
void print_insn_detail_sysz(csh handle, cs_insn *ins);
void print_insn_detail_xcore(csh handle, cs_insn *ins);
void print_insn_detail_m68k(csh handle, cs_insn *ins);
void print_insn_detail_tms320c64x(csh handle, cs_insn *ins);
void print_insn_detail_m680x(csh handle, cs_insn *ins);
void print_insn_detail_evm(csh handle, cs_insn *ins);
void print_insn_detail_mos65xx(csh handle, cs_insn *ins);
static void print_details(csh handle, cs_arch arch, cs_mode md, cs_insn *ins);
void print_string_hex(const char *comment, unsigned char *str, size_t len)
{
unsigned char *c;
printf("%s", comment);
for (c = str; c < str + len; c++) {
printf("0x%02x ", *c & 0xff);
}
printf("\n");
}
// convert hexchar to hexnum
static uint8_t char_to_hexnum(char c)
{
if (c >= '0' && c <= '9') {
return (uint8_t)(c - '0');
}
if (c >= 'a' && c <= 'f') {
return (uint8_t)(10 + c - 'a');
}
// c >= 'A' && c <= 'F'
return (uint8_t)(10 + c - 'A');
}
// convert user input (char[]) to uint8_t[], each element of which is
// valid hexadecimal, and return actual length of uint8_t[] in @size.
static uint8_t *preprocess(char *code, size_t *size)
{
size_t i = 0, j = 0;
uint8_t high, low;
uint8_t *result;
if (strlen(code) == 0)
return NULL;
result = (uint8_t *)malloc(strlen(code));
if (result != NULL) {
while (code[i] != '\0') {
if (isxdigit(code[i]) && isxdigit(code[i+1])) {
high = 16 * char_to_hexnum(code[i]);
low = char_to_hexnum(code[i+1]);
result[j] = high + low;
i++;
j++;
}
i++;
}
*size = j;
}
return result;
}
static void usage(char *prog)
{
printf("Cstool for Capstone Disassembler Engine v%u.%u.%u\n\n", CS_VERSION_MAJOR, CS_VERSION_MINOR, CS_VERSION_EXTRA);
printf("Syntax: %s [-u|-d|-s|-v] <arch+mode> <assembly-hexstring> [start-address-in-hex-format]\n", prog);
printf("\nThe following <arch+mode> options are supported:\n");
if (cs_support(CS_ARCH_X86)) {
printf(" x16 16-bit mode (X86)\n");
printf(" x32 32-bit mode (X86)\n");
printf(" x64 64-bit mode (X86)\n");
printf(" x16att 16-bit mode (X86), syntax AT&T\n");
printf(" x32att 32-bit mode (X86), syntax AT&T\n");
printf(" x64att 64-bit mode (X86), syntax AT&T\n");
}
if (cs_support(CS_ARCH_ARM)) {
printf(" arm arm\n");
printf(" armbe arm + big endian\n");
printf(" thumb thumb mode\n");
printf(" thumbbe thumb + big endian\n");
printf(" cortexm thumb + cortex-m extensions\n");
}
if (cs_support(CS_ARCH_ARM64)) {
printf(" arm64 aarch64 mode\n");
printf(" arm64be aarch64 + big endian\n");
}
if (cs_support(CS_ARCH_MIPS)) {
printf(" mips mips32 + little endian\n");
printf(" mipsbe mips32 + big endian\n");
printf(" mips64 mips64 + little endian\n");
printf(" mips64be mips64 + big endian\n");
}
if (cs_support(CS_ARCH_PPC)) {
printf(" ppc64 ppc64 + little endian\n");
printf(" ppc64be ppc64 + big endian\n");
}
if (cs_support(CS_ARCH_SPARC)) {
printf(" sparc sparc\n");
}
if (cs_support(CS_ARCH_SYSZ)) {
printf(" systemz systemz (s390x)\n");
}
if (cs_support(CS_ARCH_XCORE)) {
printf(" xcore xcore\n");
}
if (cs_support(CS_ARCH_M68K)) {
printf(" m68k m68k + big endian\n");
printf(" m68k40 m68k_040\n");
}
if (cs_support(CS_ARCH_TMS320C64X)) {
printf(" tms320c64x TMS320C64x\n");
}
if (cs_support(CS_ARCH_M680X)) {
printf(" m6800 M6800/2\n");
printf(" m6801 M6801/3\n");
printf(" m6805 M6805\n");
printf(" m6808 M68HC08\n");
printf(" m6809 M6809\n");
printf(" m6811 M68HC11\n");
printf(" cpu12 M68HC12/HCS12\n");
printf(" hd6301 HD6301/3\n");
printf(" hd6309 HD6309\n");
printf(" hcs08 HCS08\n");
}
if (cs_support(CS_ARCH_EVM)) {
printf(" evm Ethereum Virtual Machine\n");
}
if (cs_support(CS_ARCH_MOS65XX)) {
printf(" mos65xx MOS65XX family\n");
}
printf("\nExtra options:\n");
printf(" -d show detailed information of the instructions\n");
printf(" -u show immediates as unsigned\n");
printf(" -s decode in SKIPDATA mode\n");
printf(" -v show version & Capstone core build info\n\n");
}
static void print_details(csh handle, cs_arch arch, cs_mode md, cs_insn *ins)
{
switch(arch) {
case CS_ARCH_X86:
print_insn_detail_x86(handle, md, ins);
break;
case CS_ARCH_ARM:
print_insn_detail_arm(handle, ins);
break;
case CS_ARCH_ARM64:
print_insn_detail_arm64(handle, ins);
break;
case CS_ARCH_MIPS:
print_insn_detail_mips(handle, ins);
break;
case CS_ARCH_PPC:
print_insn_detail_ppc(handle, ins);
break;
case CS_ARCH_SPARC:
print_insn_detail_sparc(handle, ins);
break;
case CS_ARCH_SYSZ:
print_insn_detail_sysz(handle, ins);
break;
case CS_ARCH_XCORE:
print_insn_detail_xcore(handle, ins);
break;
case CS_ARCH_M68K:
print_insn_detail_m68k(handle, ins);
break;
case CS_ARCH_TMS320C64X:
print_insn_detail_tms320c64x(handle, ins);
break;
case CS_ARCH_M680X:
print_insn_detail_m680x(handle, ins);
break;
case CS_ARCH_EVM:
print_insn_detail_evm(handle, ins);
break;
case CS_ARCH_MOS65XX:
print_insn_detail_mos65xx(handle, ins);
break;
default: break;
}
if (ins->detail->groups_count) {
int j;
printf("\tGroups: ");
for(j = 0; j < ins->detail->groups_count; j++) {
printf("%s ", cs_group_name(handle, ins->detail->groups[j]));
}
printf("\n");
}
printf("\n");
}
int main(int argc, char **argv)
{
int i, c;
csh handle;
char *mode;
uint8_t *assembly;
size_t count, size;
uint64_t address = 0LL;
cs_insn *insn;
cs_err err;
cs_mode md;
cs_arch arch = CS_ARCH_ALL;
bool detail_flag = false;
bool unsigned_flag = false;
bool skipdata = false;
int args_left;
while ((c = getopt (argc, argv, "sudhv")) != -1) {
switch (c) {
case 's':
skipdata = true;
break;
case 'u':
unsigned_flag = true;
break;
case 'd':
detail_flag = true;
break;
case 'v':
printf("cstool for Capstone Disassembler, v%u.%u.%u\n", CS_VERSION_MAJOR, CS_VERSION_MINOR, CS_VERSION_EXTRA);
printf("Capstone build: ");
if (cs_support(CS_ARCH_X86)) {
printf("x86=1 ");
}
if (cs_support(CS_ARCH_ARM)) {
printf("arm=1 ");
}
if (cs_support(CS_ARCH_ARM64)) {
printf("arm64=1 ");
}
if (cs_support(CS_ARCH_MIPS)) {
printf("mips=1 ");
}
if (cs_support(CS_ARCH_PPC)) {
printf("ppc=1 ");
}
if (cs_support(CS_ARCH_SPARC)) {
printf("sparc=1 ");
}
if (cs_support(CS_ARCH_SYSZ)) {
printf("sysz=1 ");
}
if (cs_support(CS_ARCH_XCORE)) {
printf("xcore=1 ");
}
if (cs_support(CS_ARCH_M68K)) {
printf("m68k=1 ");
}
if (cs_support(CS_ARCH_TMS320C64X)) {
printf("tms320c64x=1 ");
}
if (cs_support(CS_ARCH_M680X)) {
printf("m680x=1 ");
}
if (cs_support(CS_ARCH_EVM)) {
printf("evm=1 ");
}
if (cs_support(CS_ARCH_MOS65XX)) {
printf("mos65xx=1 ");
}
if (cs_support(CS_SUPPORT_DIET)) {
printf("diet=1 ");
}
if (cs_support(CS_SUPPORT_X86_REDUCE)) {
printf("x86_reduce=1 ");
}
printf("\n");
return 0;
case 'h':
usage(argv[0]);
return 0;
default:
usage(argv[0]);
return -1;
}
}
args_left = argc - optind;
if (args_left < 2 || args_left > 3) {
usage(argv[0]);
return -1;
}
mode = argv[optind];
assembly = preprocess(argv[optind + 1], &size);
if (!assembly) {
usage(argv[0]);
return -1;
}
if (args_left == 3) {
char *temp, *src = argv[optind + 2];
address = strtoull(src, &temp, 16);
if (temp == src || *temp != '\0' || errno == ERANGE) {
printf("ERROR: invalid address argument, quit!\n");
return -2;
}
}
for (i = 0; all_archs[i].name; i++) {
if (!strcmp(all_archs[i].name, mode)) {
arch = all_archs[i].arch;
err = cs_open(all_archs[i].arch, all_archs[i].mode, &handle);
if (!err) {
md = all_archs[i].mode;
if (strstr (mode, "att")) {
cs_option(handle, CS_OPT_SYNTAX, CS_OPT_SYNTAX_ATT);
}
// turn on SKIPDATA mode
if (skipdata)
cs_option(handle, CS_OPT_SKIPDATA, CS_OPT_ON);
}
break;
}
}
if (arch == CS_ARCH_ALL) {
printf("ERROR: Invalid <arch+mode>: \"%s\", quit!\n", mode);
usage(argv[0]);
return -1;
}
if (err) {
printf("ERROR: Failed on cs_open(), quit!\n");
usage(argv[0]);
return -1;
}
if (detail_flag) {
cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON);
}
if (unsigned_flag) {
cs_option(handle, CS_OPT_UNSIGNED, CS_OPT_ON);
}
count = cs_disasm(handle, assembly, size, address, 0, &insn);
if (count > 0) {
size_t i;
for (i = 0; i < count; i++) {
int j;
printf("%2"PRIx64" ", insn[i].address);
for (j = 0; j < insn[i].size; j++) {
if (j > 0)
putchar(' ');
printf("%02x", insn[i].bytes[j]);
}
// X86 and s390 instruction sizes are variable.
// align assembly instruction after the opcode
if (arch == CS_ARCH_X86) {
for (; j < 16; j++) {
printf(" ");
}
} else if (arch == CS_ARCH_SYSZ) {
for (; j < 6; j++) {
printf(" ");
}
}
printf(" %s\t%s\n", insn[i].mnemonic, insn[i].op_str);
if (detail_flag) {
print_details(handle, arch, md, &insn[i]);
}
}
cs_free(insn, count);
} else {
printf("ERROR: invalid assembly code\n");
return(-4);
}
cs_close(&handle);
free(assembly);
return 0;
}