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169 lines
4.0 KiB
169 lines
4.0 KiB
/* Capstone Disassembler Engine */ |
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/* By Sebastian Macke <sebastian@macke.de>, 2018 */ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <capstone/platform.h> |
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#include <capstone/capstone.h> |
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struct platform { |
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cs_arch arch; |
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cs_mode mode; |
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unsigned char *code; |
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size_t size; |
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const char *comment; |
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}; |
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static csh handle; |
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static void print_string_hex(const char *comment, unsigned char *str, size_t len) |
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{ |
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unsigned char *c; |
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printf("%s", comment); |
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for (c = str; c < str + len; c++) { |
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printf(" 0x%02x", *c & 0xff); |
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} |
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printf("\n"); |
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} |
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static const char *get_am_name(mos65xx_address_mode mode) |
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{ |
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switch(mode) { |
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default: |
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case MOS65XX_AM_NONE: |
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return "No address mode"; |
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case MOS65XX_AM_IMP: |
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return "implied addressing (no addressing mode)"; |
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case MOS65XX_AM_ACC: |
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return "accumulator addressing"; |
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case MOS65XX_AM_ABS: |
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return "absolute addressing"; |
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case MOS65XX_AM_ZP: |
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return "zeropage addressing"; |
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case MOS65XX_AM_IMM: |
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return "8 Bit immediate value"; |
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case MOS65XX_AM_ABSX: |
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return "indexed absolute addressing by the X index register"; |
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case MOS65XX_AM_ABSY: |
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return "indexed absolute addressing by the Y index register"; |
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case MOS65XX_AM_INDX: |
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return "indexed indirect addressing by the X index register"; |
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case MOS65XX_AM_INDY: |
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return "indirect indexed addressing by the Y index register"; |
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case MOS65XX_AM_ZPX: |
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return "indexed zeropage addressing by the X index register"; |
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case MOS65XX_AM_ZPY: |
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return "indexed zeropage addressing by the Y index register"; |
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case MOS65XX_AM_REL: |
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return "relative addressing used by branches"; |
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case MOS65XX_AM_IND: |
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return "absolute indirect addressing"; |
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} |
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} |
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static void print_insn_detail(cs_insn *ins) |
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{ |
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cs_mos65xx *mos65xx; |
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int i; |
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// detail can be NULL on "data" instruction if SKIPDATA option is turned ON |
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if (ins->detail == NULL) |
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return; |
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mos65xx = &(ins->detail->mos65xx); |
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// printf("insn_detail\n"); |
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printf("\taddress mode: %s\n", get_am_name(mos65xx->am)); |
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printf("\tmodifies flags: %s\n", mos65xx->modifies_flags ? "true": "false"); |
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if (mos65xx->op_count) |
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printf("\top_count: %u\n", mos65xx->op_count); |
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for (i = 0; i < mos65xx->op_count; i++) { |
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cs_mos65xx_op *op = &(mos65xx->operands[i]); |
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switch((int)op->type) { |
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default: |
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break; |
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case MOS65XX_OP_REG: |
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printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg)); |
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break; |
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case MOS65XX_OP_IMM: |
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printf("\t\toperands[%u].type: IMM = 0x%x\n", i, op->imm); |
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break; |
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case MOS65XX_OP_MEM: |
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printf("\t\toperands[%u].type: MEM = 0x%x\n", i, op->mem); |
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break; |
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} |
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} |
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} |
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static void test() |
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{ |
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#define MOS65XX_CODE "\x0d\x34\x12\x00\x81\x87\x6c\x01\x00\x85\xFF\x10\x00\x19\x42\x42\x00\x49\x42" |
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struct platform platforms[] = { |
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{ |
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CS_ARCH_MOS65XX, |
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0, |
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(unsigned char *)MOS65XX_CODE, |
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sizeof(MOS65XX_CODE) - 1, |
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"MOS65XX" |
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}, |
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}; |
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uint64_t address = 0x1000; |
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cs_insn *insn; |
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int i; |
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size_t count; |
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for (i = 0; i < sizeof(platforms)/sizeof(platforms[0]); i++) { |
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cs_err err = cs_open(platforms[i].arch, platforms[i].mode, &handle); |
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if (err) { |
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printf("Failed on cs_open() with error returned: %u\n", err); |
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abort(); |
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} |
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cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON); |
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count = cs_disasm(handle, platforms[i].code, platforms[i].size, address, 0, &insn); |
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if (count) { |
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size_t j; |
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printf("****************\n"); |
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printf("Platform: %s\n", platforms[i].comment); |
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print_string_hex("Code:", platforms[i].code, platforms[i].size); |
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printf("Disasm:\n"); |
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for (j = 0; j < count; j++) { |
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printf("0x%" PRIx64 ":\t%s\t%s\n", insn[j].address, insn[j].mnemonic, insn[j].op_str); |
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print_insn_detail(&insn[j]); |
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puts(""); |
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} |
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printf("0x%" PRIx64 ":\n", insn[j-1].address + insn[j-1].size); |
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// free memory allocated by cs_disasm() |
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cs_free(insn, count); |
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} else { |
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printf("****************\n"); |
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printf("Platform: %s\n", platforms[i].comment); |
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print_string_hex("Code:", platforms[i].code, platforms[i].size); |
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printf("ERROR: Failed to disasm given code!\n"); |
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abort(); |
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} |
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printf("\n"); |
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cs_close(&handle); |
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} |
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} |
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int main() |
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{ |
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test(); |
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return 0; |
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}
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