test_ppc.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 const char* get_bc_name(int bc)
{
    switch(bc) {
        default:
        case PPC_BC_INVALID:
            return ("invalid");
        case PPC_BC_LT:
            return ("lt");
        case PPC_BC_LE:
            return ("le");
        case PPC_BC_EQ:
            return ("eq");
        case PPC_BC_GE:
            return ("ge");
        case PPC_BC_GT:
            return ("gt");
        case PPC_BC_NE:
            return ("ne");
        case PPC_BC_UN:
            return ("un");
        case PPC_BC_NU:
            return ("nu");
        case PPC_BC_SO:
            return ("so");
        case PPC_BC_NS:
            return ("ns");
    }
}
 
static void print_insn_detail(cs_insn *ins)
{
    cs_ppc *ppc;
    int i;
 
    // detail can be NULL on "data" instruction if SKIPDATA option is turned ON
    if (ins->detail == NULL)
        return;
 
    ppc = &(ins->detail->ppc);
    if (ppc->op_count)
        printf("\top_count: %u\n", ppc->op_count);
 
    for (i = 0; i < ppc->op_count; i++) {
        cs_ppc_op *op = &(ppc->operands[i]);
        switch((int)op->type) {
            default:
                break;
            case PPC_OP_REG:
                printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg));
                break;
            case PPC_OP_IMM:
                printf("\t\toperands[%u].type: IMM = 0x%" PRIx64 "\n", i, op->imm);
                break;
            case PPC_OP_MEM:
                printf("\t\toperands[%u].type: MEM\n", i);
                if (op->mem.base != PPC_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%x\n", i, op->mem.disp);
 
                break;
            case PPC_OP_CRX:
                printf("\t\toperands[%u].type: CRX\n", i);
                printf("\t\t\toperands[%u].crx.scale: %d\n", i, op->crx.scale);
                printf("\t\t\toperands[%u].crx.reg: %s\n", i, cs_reg_name(handle, op->crx.reg));
                printf("\t\t\toperands[%u].crx.cond: %s\n", i, get_bc_name(op->crx.cond));
                break;
        }
    }
 
    if (ppc->bc != 0)
        printf("\tBranch code: %u\n", ppc->bc);
 
    if (ppc->bh != 0)
        printf("\tBranch hint: %u\n", ppc->bh);
 
    if (ppc->update_cr0)
        printf("\tUpdate-CR0: True\n");
 
    printf("\n");
}
 
static void test()
{
#define PPC_CODE "\x43\x20\x0c\x07\x41\x56\xff\x17\x80\x20\x00\x00\x80\x3f\x00\x00\x10\x43\x23\x0e\xd0\x44\x00\x80\x4c\x43\x22\x02\x2d\x03\x00\x80\x7c\x43\x20\x14\x7c\x43\x20\x93\x4f\x20\x00\x21\x4c\xc8\x00\x21\x40\x82\x00\x14"
#define PPC_CODE2 "\x10\x60\x2a\x10\x10\x64\x28\x88\x7c\x4a\x5d\x0f"
 
    struct platform platforms[] = {
        {
            CS_ARCH_PPC,
            CS_MODE_BIG_ENDIAN,
            (unsigned char*)PPC_CODE,
            sizeof(PPC_CODE) - 1,
            "PPC-64",
        },
        {
            CS_ARCH_PPC,
            (cs_mode)(CS_MODE_BIG_ENDIAN + CS_MODE_QPX),
            (unsigned char*)PPC_CODE2,
            sizeof(PPC_CODE2) - 1,
            "PPC-64 + QPX",
        },
    };
 
    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;
}