test_mips.c

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/* Capstone Disassembler Engine */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013 */
 
#include <stdio.h>
#include <stdlib.h>
 
#include <capstone/platform.h>
#include <capstone/capstone.h>
 
struct platform {
        cs_arch arch;
        cs_mode mode;
        unsigned char *code;
        size_t size;
        const char *comment;
};
 
static csh handle;
 
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)
{
        int i;
        cs_mips *mips;
 
        // detail can be NULL on "data" instruction if SKIPDATA option is turned ON
        if (ins->detail == NULL)
                return;
 
        mips = &(ins->detail->mips);
        if (mips->op_count)
                printf("\top_count: %u\n", mips->op_count);
 
        for (i = 0; i < mips->op_count; i++) {
                cs_mips_op *op = &(mips->operands[i]);
                switch((int)op->type) {
                        default:
                                break;
                        case MIPS_OP_REG:
                                printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg));
                                break;
                        case MIPS_OP_IMM:
                                printf("\t\toperands[%u].type: IMM = 0x%" PRIx64 "\n", i, op->imm);
                                break;
                        case MIPS_OP_MEM:
                                printf("\t\toperands[%u].type: MEM\n", i);
                                if (op->mem.base != MIPS_REG_INVALID)
                                        printf("\t\t\toperands[%u].mem.base: REG = %s\n",
                                                        i, cs_reg_name(handle, op->mem.base));
                                if (op->mem.disp != 0)
                                        printf("\t\t\toperands[%u].mem.disp: 0x%" PRIx64 "\n", i, op->mem.disp);
 
                                break;
                }
 
        }
 
        printf("\n");
}
 
static void test()
{
//#define MIPS_CODE "\x8f\xa2\x00\x00"
//#define MIPS_CODE "\x00\x00\xa7\xac\x10\x00\xa2\x8f"
//#define MIPS_CODE "\x21\x30\xe6\x70"  // clo $6, $7
//#define MIPS_CODE "\x00\x00\x00\x00" // nop
//#define MIPS_CODE "\xc6\x23\xe9\xe4"  // swc1 $f9, 0x23c6($7)
//#define MIPS_CODE "\x21\x38\x00\x01"  // move $7, $8
#define MIPS_CODE "\x0C\x10\x00\x97\x00\x00\x00\x00\x24\x02\x00\x0c\x8f\xa2\x00\x00\x34\x21\x34\x56"
//#define MIPS_CODE "\x04\x11\x00\x01"  // bal  0x8
#define MIPS_CODE2 "\x56\x34\x21\x34\xc2\x17\x01\x00"
#define MIPS_32R6M "\x00\x07\x00\x07\x00\x11\x93\x7c\x01\x8c\x8b\x7c\x00\xc7\x48\xd0"
#define MIPS_32R6 "\xec\x80\x00\x19\x7c\x43\x22\xa0"
#define MIPS_64SD "\x70\x00\xb2\xff"
 
        struct platform platforms[] = {
                {
                        CS_ARCH_MIPS,
                        (cs_mode)(CS_MODE_MIPS32 | CS_MODE_BIG_ENDIAN),
                        (unsigned char *)MIPS_CODE,
                        sizeof(MIPS_CODE) - 1,
                        "MIPS-32 (Big-endian)"
                },
                {
                        CS_ARCH_MIPS,
                        (cs_mode)(CS_MODE_MIPS64 | CS_MODE_LITTLE_ENDIAN),
                        (unsigned char *)MIPS_CODE2,
                        sizeof(MIPS_CODE2) - 1,
                        "MIPS-64-EL (Little-endian)"
                },
                {
                        CS_ARCH_MIPS,
                        (cs_mode)(CS_MODE_MIPS32R6 | CS_MODE_MICRO | CS_MODE_BIG_ENDIAN),
                        (unsigned char*)MIPS_32R6M,
                        sizeof(MIPS_32R6M) - 1,
                        "MIPS-32R6 | Micro (Big-endian)"
                },
                {
                        CS_ARCH_MIPS,
                        (cs_mode)(CS_MODE_MIPS32R6 | CS_MODE_BIG_ENDIAN),
                        (unsigned char*)MIPS_32R6,
                        sizeof(MIPS_32R6) - 1,
                        "MIPS-32R6 (Big-endian)"
                },
                {
                        CS_ARCH_MIPS,
                        (cs_mode)(CS_MODE_MIPS64 | CS_MODE_MIPS2 | CS_MODE_LITTLE_ENDIAN),
                        (unsigned char *)MIPS_64SD,
                        sizeof(MIPS_64SD) - 1,
                        "MIPS-64-EL + Mips II (Little-endian)"
                },
                {
                        CS_ARCH_MIPS,
                        (cs_mode)(CS_MODE_MIPS64 | CS_MODE_LITTLE_ENDIAN),
                        (unsigned char *)MIPS_64SD,
                        sizeof(MIPS_64SD) - 1,
                        "MIPS-64-EL (Little-endian)"
                },
        };
 
        uint64_t address = 0x1000;
        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;
}