| /* Capstone Disassembler Engine */ |
| /* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2019 */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include <capstone/platform.h> |
| #include <capstone/capstone.h> |
| |
| static csh handle; |
| |
| struct platform { |
| cs_arch arch; |
| cs_mode mode; |
| unsigned char *code; |
| size_t size; |
| const char *comment; |
| }; |
| |
| static 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"); |
| } |
| |
| static void print_insn_detail(cs_insn *ins) |
| { |
| cs_arm64 *arm64; |
| int i; |
| cs_regs regs_read, regs_write; |
| unsigned char regs_read_count, regs_write_count; |
| unsigned char access; |
| |
| // detail can be NULL if SKIPDATA option is turned ON |
| if (ins->detail == NULL) |
| return; |
| |
| arm64 = &(ins->detail->arm64); |
| if (arm64->op_count) |
| printf("\top_count: %u\n", arm64->op_count); |
| |
| for (i = 0; i < arm64->op_count; i++) { |
| cs_arm64_op *op = &(arm64->operands[i]); |
| switch(op->type) { |
| default: |
| break; |
| case ARM64_OP_REG: |
| printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg)); |
| break; |
| case ARM64_OP_IMM: |
| printf("\t\toperands[%u].type: IMM = 0x%" PRIx64 "\n", i, op->imm); |
| break; |
| case ARM64_OP_FP: |
| #if defined(_KERNEL_MODE) |
| // Issue #681: Windows kernel does not support formatting float point |
| printf("\t\toperands[%u].type: FP = <float_point_unsupported>\n", i); |
| #else |
| printf("\t\toperands[%u].type: FP = %f\n", i, op->fp); |
| #endif |
| break; |
| case ARM64_OP_MEM: |
| printf("\t\toperands[%u].type: MEM\n", i); |
| if (op->mem.base != ARM64_REG_INVALID) |
| printf("\t\t\toperands[%u].mem.base: REG = %s\n", i, cs_reg_name(handle, op->mem.base)); |
| if (op->mem.index != ARM64_REG_INVALID) |
| printf("\t\t\toperands[%u].mem.index: REG = %s\n", i, cs_reg_name(handle, op->mem.index)); |
| if (op->mem.disp != 0) |
| printf("\t\t\toperands[%u].mem.disp: 0x%x\n", i, op->mem.disp); |
| |
| break; |
| case ARM64_OP_CIMM: |
| printf("\t\toperands[%u].type: C-IMM = %u\n", i, (int)op->imm); |
| break; |
| case ARM64_OP_REG_MRS: |
| printf("\t\toperands[%u].type: REG_MRS = 0x%x\n", i, op->reg); |
| break; |
| case ARM64_OP_REG_MSR: |
| printf("\t\toperands[%u].type: REG_MSR = 0x%x\n", i, op->reg); |
| break; |
| case ARM64_OP_PSTATE: |
| printf("\t\toperands[%u].type: PSTATE = 0x%x\n", i, op->pstate); |
| break; |
| case ARM64_OP_SYS: |
| printf("\t\toperands[%u].type: SYS = 0x%x\n", i, op->sys); |
| break; |
| case ARM64_OP_PREFETCH: |
| printf("\t\toperands[%u].type: PREFETCH = 0x%x\n", i, op->prefetch); |
| break; |
| case ARM64_OP_BARRIER: |
| printf("\t\toperands[%u].type: BARRIER = 0x%x\n", i, op->barrier); |
| break; |
| } |
| |
| access = op->access; |
| switch(access) { |
| default: |
| break; |
| case CS_AC_READ: |
| printf("\t\toperands[%u].access: READ\n", i); |
| break; |
| case CS_AC_WRITE: |
| printf("\t\toperands[%u].access: WRITE\n", i); |
| break; |
| case CS_AC_READ | CS_AC_WRITE: |
| printf("\t\toperands[%u].access: READ | WRITE\n", i); |
| break; |
| } |
| |
| if (op->shift.type != ARM64_SFT_INVALID && |
| op->shift.value) |
| printf("\t\t\tShift: type = %u, value = %u\n", |
| op->shift.type, op->shift.value); |
| |
| if (op->ext != ARM64_EXT_INVALID) |
| printf("\t\t\tExt: %u\n", op->ext); |
| |
| if (op->vas != ARM64_VAS_INVALID) |
| printf("\t\t\tVector Arrangement Specifier: 0x%x\n", op->vas); |
| |
| if (op->vess != ARM64_VESS_INVALID) |
| printf("\t\t\tVector Element Size Specifier: %u\n", op->vess); |
| |
| if (op->vector_index != -1) |
| printf("\t\t\tVector Index: %u\n", op->vector_index); |
| } |
| |
| if (arm64->update_flags) |
| printf("\tUpdate-flags: True\n"); |
| |
| if (arm64->writeback) |
| printf("\tWrite-back: True\n"); |
| |
| if (arm64->cc) |
| printf("\tCode-condition: %u\n", arm64->cc); |
| |
| // Print out all registers accessed by this instruction (either implicit or explicit) |
| if (!cs_regs_access(handle, ins, |
| regs_read, ®s_read_count, |
| regs_write, ®s_write_count)) { |
| if (regs_read_count) { |
| printf("\tRegisters read:"); |
| for(i = 0; i < regs_read_count; i++) { |
| printf(" %s", cs_reg_name(handle, regs_read[i])); |
| } |
| printf("\n"); |
| } |
| |
| if (regs_write_count) { |
| printf("\tRegisters modified:"); |
| for(i = 0; i < regs_write_count; i++) { |
| printf(" %s", cs_reg_name(handle, regs_write[i])); |
| } |
| printf("\n"); |
| } |
| } |
| |
| printf("\n"); |
| } |
| |
| static void test() |
| { |
| #define ARM64_CODE "\x09\x00\x38\xd5\xbf\x40\x00\xd5\x0c\x05\x13\xd5\x20\x50\x02\x0e\x20\xe4\x3d\x0f\x00\x18\xa0\x5f\xa2\x00\xae\x9e\x9f\x37\x03\xd5\xbf\x33\x03\xd5\xdf\x3f\x03\xd5\x21\x7c\x02\x9b\x21\x7c\x00\x53\x00\x40\x21\x4b\xe1\x0b\x40\xb9\x20\x04\x81\xda\x20\x08\x02\x8b\x10\x5b\xe8\x3c" |
| |
| struct platform platforms[] = { |
| { |
| CS_ARCH_ARM64, |
| CS_MODE_ARM, |
| (unsigned char *)ARM64_CODE, |
| sizeof(ARM64_CODE) - 1, |
| "ARM-64" |
| }, |
| }; |
| |
| uint64_t address = 0x2c; |
| cs_insn *insn; |
| int i; |
| size_t count; |
| |
| for (i = 0; i < sizeof(platforms)/sizeof(platforms[0]); i++) { |
| cs_err err = cs_open(platforms[i].arch, platforms[i].mode, &handle); |
| if (err) { |
| printf("Failed on cs_open() with error returned: %u\n", err); |
| abort(); |
| } |
| |
| cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON); |
| |
| count = cs_disasm(handle, platforms[i].code, platforms[i].size, address, 0, &insn); |
| if (count) { |
| size_t j; |
| |
| printf("****************\n"); |
| printf("Platform: %s\n", platforms[i].comment); |
| print_string_hex("Code: ", platforms[i].code, platforms[i].size); |
| printf("Disasm:\n"); |
| |
| for (j = 0; j < count; j++) { |
| printf("0x%" PRIx64 ":\t%s\t%s\n", insn[j].address, insn[j].mnemonic, insn[j].op_str); |
| print_insn_detail(&insn[j]); |
| } |
| printf("0x%" PRIx64 ":\n", insn[j-1].address + insn[j-1].size); |
| |
| // free memory allocated by cs_disasm() |
| cs_free(insn, count); |
| } else { |
| printf("****************\n"); |
| printf("Platform: %s\n", platforms[i].comment); |
| print_string_hex("Code: ", platforms[i].code, platforms[i].size); |
| printf("ERROR: Failed to disasm given code!\n"); |
| abort(); |
| } |
| |
| printf("\n"); |
| |
| cs_close(&handle); |
| } |
| } |
| |
| int main() |
| { |
| test(); |
| |
| return 0; |
| } |
| |