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193 lines
5.3 KiB
193 lines
5.3 KiB
/* Capstone Disassembly Engine */ |
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/* TMS320C64x Backend by Fotis Loukos <me@fotisl.com> 2016 */ |
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#include <stdio.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 void print_insn_detail(cs_insn *ins) |
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{ |
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cs_tms320c64x *tms320c64x; |
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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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tms320c64x = &(ins->detail->tms320c64x); |
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if (tms320c64x->op_count) |
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printf("\top_count: %u\n", tms320c64x->op_count); |
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for (i = 0; i < tms320c64x->op_count; i++) { |
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cs_tms320c64x_op *op = &(tms320c64x->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 TMS320C64X_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 TMS320C64X_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 TMS320C64X_OP_MEM: |
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printf("\t\toperands[%u].type: MEM\n", i); |
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if (op->mem.base != TMS320C64X_REG_INVALID) |
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printf("\t\t\toperands[%u].mem.base: REG = %s\n", |
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i, cs_reg_name(handle, op->mem.base)); |
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printf("\t\t\toperands[%u].mem.disptype: ", i); |
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if(op->mem.disptype == TMS320C64X_MEM_DISP_INVALID) { |
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printf("Invalid\n"); |
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printf("\t\t\toperands[%u].mem.disp: %u\n", i, op->mem.disp); |
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} |
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if(op->mem.disptype == TMS320C64X_MEM_DISP_CONSTANT) { |
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printf("Constant\n"); |
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printf("\t\t\toperands[%u].mem.disp: %u\n", i, op->mem.disp); |
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} |
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if(op->mem.disptype == TMS320C64X_MEM_DISP_REGISTER) { |
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printf("Register\n"); |
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printf("\t\t\toperands[%u].mem.disp: %s\n", i, cs_reg_name(handle, op->mem.disp)); |
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} |
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printf("\t\t\toperands[%u].mem.unit: %u\n", i, op->mem.unit); |
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printf("\t\t\toperands[%u].mem.direction: ", i); |
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if(op->mem.direction == TMS320C64X_MEM_DIR_INVALID) |
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printf("Invalid\n"); |
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if(op->mem.direction == TMS320C64X_MEM_DIR_FW) |
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printf("Forward\n"); |
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if(op->mem.direction == TMS320C64X_MEM_DIR_BW) |
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printf("Backward\n"); |
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printf("\t\t\toperands[%u].mem.modify: ", i); |
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if(op->mem.modify == TMS320C64X_MEM_MOD_INVALID) |
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printf("Invalid\n"); |
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if(op->mem.modify == TMS320C64X_MEM_MOD_NO) |
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printf("No\n"); |
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if(op->mem.modify == TMS320C64X_MEM_MOD_PRE) |
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printf("Pre\n"); |
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if(op->mem.modify == TMS320C64X_MEM_MOD_POST) |
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printf("Post\n"); |
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printf("\t\t\toperands[%u].mem.scaled: %u\n", i, op->mem.scaled); |
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break; |
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case TMS320C64X_OP_REGPAIR: |
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printf("\t\toperands[%u].type: REGPAIR = %s:%s\n", i, cs_reg_name(handle, op->reg + 1), cs_reg_name(handle, op->reg)); |
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break; |
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} |
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} |
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printf("\tFunctional unit: "); |
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switch(tms320c64x->funit.unit) { |
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case TMS320C64X_FUNIT_D: |
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printf("D%u\n", tms320c64x->funit.side); |
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break; |
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case TMS320C64X_FUNIT_L: |
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printf("L%u\n", tms320c64x->funit.side); |
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break; |
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case TMS320C64X_FUNIT_M: |
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printf("M%u\n", tms320c64x->funit.side); |
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break; |
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case TMS320C64X_FUNIT_S: |
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printf("S%u\n", tms320c64x->funit.side); |
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break; |
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case TMS320C64X_FUNIT_NO: |
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printf("No Functional Unit\n"); |
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break; |
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default: |
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printf("Unknown (Unit %u, Side %u)\n", tms320c64x->funit.unit, tms320c64x->funit.side); |
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break; |
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} |
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if(tms320c64x->funit.crosspath == 1) |
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printf("\tCrosspath: 1\n"); |
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if(tms320c64x->condition.reg != TMS320C64X_REG_INVALID) |
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printf("\tCondition: [%c%s]\n", (tms320c64x->condition.zero == 1) ? '!' : ' ', cs_reg_name(handle, tms320c64x->condition.reg)); |
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printf("\tParallel: %s\n", (tms320c64x->parallel == 1) ? "true" : "false"); |
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printf("\n"); |
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} |
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static void test() |
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{ |
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#define TMS320C64X_CODE "\x01\xac\x88\x40\x81\xac\x88\x43\x00\x00\x00\x00\x02\x90\x32\x96\x02\x80\x46\x9e\x05\x3c\x83\xe6\x0b\x0c\x8b\x24" |
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struct platform platforms[] = { |
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{ |
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CS_ARCH_TMS320C64X, |
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CS_MODE_BIG_ENDIAN, |
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(unsigned char*)TMS320C64X_CODE, |
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sizeof(TMS320C64X_CODE) - 1, |
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"TMS320C64x", |
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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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continue; |
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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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} |
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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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} |
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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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