blob: 86a6d76d78ac5fbe43944835603577c16106a077 [file] [log] [blame]
/* Capstone Disassembly Engine */
/* TMS320C64x Backend by Fotis Loukos <me@fotisl.com> 2016 */
#include <stdio.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_tms320c64x *tms320c64x;
int i;
// detail can be NULL on "data" instruction if SKIPDATA option is turned ON
if (ins->detail == NULL)
return;
tms320c64x = &(ins->detail->tms320c64x);
if (tms320c64x->op_count)
printf("\top_count: %u\n", tms320c64x->op_count);
for (i = 0; i < tms320c64x->op_count; i++) {
cs_tms320c64x_op *op = &(tms320c64x->operands[i]);
switch((int)op->type) {
default:
break;
case TMS320C64X_OP_REG:
printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg));
break;
case TMS320C64X_OP_IMM:
printf("\t\toperands[%u].type: IMM = 0x%x\n", i, op->imm);
break;
case TMS320C64X_OP_MEM:
printf("\t\toperands[%u].type: MEM\n", i);
if (op->mem.base != TMS320C64X_REG_INVALID)
printf("\t\t\toperands[%u].mem.base: REG = %s\n",
i, cs_reg_name(handle, op->mem.base));
printf("\t\t\toperands[%u].mem.disptype: ", i);
if(op->mem.disptype == TMS320C64X_MEM_DISP_INVALID) {
printf("Invalid\n");
printf("\t\t\toperands[%u].mem.disp: %u\n", i, op->mem.disp);
}
if(op->mem.disptype == TMS320C64X_MEM_DISP_CONSTANT) {
printf("Constant\n");
printf("\t\t\toperands[%u].mem.disp: %u\n", i, op->mem.disp);
}
if(op->mem.disptype == TMS320C64X_MEM_DISP_REGISTER) {
printf("Register\n");
printf("\t\t\toperands[%u].mem.disp: %s\n", i, cs_reg_name(handle, op->mem.disp));
}
printf("\t\t\toperands[%u].mem.unit: %u\n", i, op->mem.unit);
printf("\t\t\toperands[%u].mem.direction: ", i);
if(op->mem.direction == TMS320C64X_MEM_DIR_INVALID)
printf("Invalid\n");
if(op->mem.direction == TMS320C64X_MEM_DIR_FW)
printf("Forward\n");
if(op->mem.direction == TMS320C64X_MEM_DIR_BW)
printf("Backward\n");
printf("\t\t\toperands[%u].mem.modify: ", i);
if(op->mem.modify == TMS320C64X_MEM_MOD_INVALID)
printf("Invalid\n");
if(op->mem.modify == TMS320C64X_MEM_MOD_NO)
printf("No\n");
if(op->mem.modify == TMS320C64X_MEM_MOD_PRE)
printf("Pre\n");
if(op->mem.modify == TMS320C64X_MEM_MOD_POST)
printf("Post\n");
printf("\t\t\toperands[%u].mem.scaled: %u\n", i, op->mem.scaled);
break;
case TMS320C64X_OP_REGPAIR:
printf("\t\toperands[%u].type: REGPAIR = %s:%s\n", i, cs_reg_name(handle, op->reg + 1), cs_reg_name(handle, op->reg));
break;
}
}
printf("\tFunctional unit: ");
switch(tms320c64x->funit.unit) {
case TMS320C64X_FUNIT_D:
printf("D%u\n", tms320c64x->funit.side);
break;
case TMS320C64X_FUNIT_L:
printf("L%u\n", tms320c64x->funit.side);
break;
case TMS320C64X_FUNIT_M:
printf("M%u\n", tms320c64x->funit.side);
break;
case TMS320C64X_FUNIT_S:
printf("S%u\n", tms320c64x->funit.side);
break;
case TMS320C64X_FUNIT_NO:
printf("No Functional Unit\n");
break;
default:
printf("Unknown (Unit %u, Side %u)\n", tms320c64x->funit.unit, tms320c64x->funit.side);
break;
}
if(tms320c64x->funit.crosspath == 1)
printf("\tCrosspath: 1\n");
if(tms320c64x->condition.reg != TMS320C64X_REG_INVALID)
printf("\tCondition: [%c%s]\n", (tms320c64x->condition.zero == 1) ? '!' : ' ', cs_reg_name(handle, tms320c64x->condition.reg));
printf("\tParallel: %s\n", (tms320c64x->parallel == 1) ? "true" : "false");
printf("\n");
}
static void test()
{
#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"
struct platform platforms[] = {
{
CS_ARCH_TMS320C64X,
CS_MODE_BIG_ENDIAN,
(unsigned char*)TMS320C64X_CODE,
sizeof(TMS320C64X_CODE) - 1,
"TMS320C64x",
},
};
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);
continue;
}
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");
}
printf("\n");
cs_close(&handle);
}
}
int main()
{
test();
return 0;
}