test_systemz.c

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/* Capstone Disassembler Engine */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2019 */
 
#include <stdio.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)
{
    cs_sysz *sysz;
    int i;
 
    // detail can be NULL on "data" instruction if SKIPDATA option is turned ON
    if (ins->detail == NULL)
        return;
 
    sysz = &(ins->detail->sysz);
    if (sysz->op_count)
        printf("\top_count: %u\n", sysz->op_count);
 
    for (i = 0; i < sysz->op_count; i++) {
        cs_sysz_op *op = &(sysz->operands[i]);
        switch((int)op->type) {
            default:
                break;
            case SYSZ_OP_REG:
                printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg));
                break;
            case SYSZ_OP_ACREG:
                printf("\t\toperands[%u].type: ACREG = %u\n", i, op->reg);
                break;
            case SYSZ_OP_IMM:
                printf("\t\toperands[%u].type: IMM = 0x%" PRIx64 "\n", i, op->imm);
                break;
            case SYSZ_OP_MEM:
                printf("\t\toperands[%u].type: MEM\n", i);
                if (op->mem.base != SYSZ_REG_INVALID)
                    printf("\t\t\toperands[%u].mem.base: REG = %s\n",
                            i, cs_reg_name(handle, op->mem.base));
                if (op->mem.index != SYSZ_REG_INVALID)
                    printf("\t\t\toperands[%u].mem.index: REG = %s\n",
                            i, cs_reg_name(handle, op->mem.index));
                if (op->mem.length != 0)
                    printf("\t\t\toperands[%u].mem.length: 0x%" PRIx64 "\n", i, op->mem.length);
                if (op->mem.disp != 0)
                    printf("\t\t\toperands[%u].mem.disp: 0x%" PRIx64 "\n", i, op->mem.disp);
 
                break;
        }
    }
 
    if (sysz->cc != 0)
        printf("\tCode condition: %u\n", sysz->cc);
 
    printf("\n");
}
 
static void test()
{
#define SYSZ_CODE "\xed\x00\x00\x00\x00\x1a\x5a\x0f\x1f\xff\xc2\x09\x80\x00\x00\x00\x07\xf7\xeb\x2a\xff\xff\x7f\x57\xe3\x01\xff\xff\x7f\x57\xeb\x00\xf0\x00\x00\x24\xb2\x4f\x00\x78\xec\x18\x00\x00\xc1\x7f"
 
    struct platform platforms[] = {
        {
            CS_ARCH_SYSZ,
            CS_MODE_BIG_ENDIAN,
            (unsigned char*)SYSZ_CODE,
            sizeof(SYSZ_CODE) - 1,
            "SystemZ",
        },
    };
 
    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;
}