capstone/tests/test_m68k.c
Erik Hemming 44ce36d1ad Fix a couple of corner-cases with rarely used m68k instructions. (#1344)
* Bump the "cs_insn.bytes[]" size to 24 (from 16) to support M680x0 instructions with full EA (maximum 11 words)
Added a test for this in test_m68k.s

* Bump the "cs_detail.regs_read[]" size to 16 (from 12) to support M680x0 instructions with full REG_BITS (Dn+An = 16)

* m68k: use immediate mode syntax (#$0) for movem/fmovem instructions with empty register list

* update bindings to match changes to cs_insn and cs_detail
2019-01-21 17:42:01 +08:00

213 lines
5.7 KiB
C

/* Capstone Disassembler Engine */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2014 */
#include <stdio.h>
#include <assert.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");
}
const char* s_addressing_modes[] = {
"<invalid mode>",
"Register Direct - Data",
"Register Direct - Address",
"Register Indirect - Address",
"Register Indirect - Address with Postincrement",
"Register Indirect - Address with Predecrement",
"Register Indirect - Address with Displacement",
"Address Register Indirect With Index - 8-bit displacement",
"Address Register Indirect With Index - Base displacement",
"Memory indirect - Postindex",
"Memory indirect - Preindex",
"Program Counter Indirect - with Displacement",
"Program Counter Indirect with Index - with 8-Bit Displacement",
"Program Counter Indirect with Index - with Base Displacement",
"Program Counter Memory Indirect - Postindexed",
"Program Counter Memory Indirect - Preindexed",
"Absolute Data Addressing - Short",
"Absolute Data Addressing - Long",
"Immediate value",
};
static void print_read_write_regs(cs_detail* detail)
{
int i;
for (i = 0; i < detail->regs_read_count; ++i)
{
uint16_t reg_id = detail->regs_read[i];
const char* reg_name = cs_reg_name(handle, reg_id);
printf("\treading from reg: %s\n", reg_name);
}
for (i = 0; i < detail->regs_write_count; ++i)
{
uint16_t reg_id = detail->regs_write[i];
const char* reg_name = cs_reg_name(handle, reg_id);
printf("\twriting to reg: %s\n", reg_name);
}
}
static void print_insn_detail(cs_insn *ins)
{
cs_m68k* m68k;
cs_detail* detail;
int i;
// detail can be NULL on "data" instruction if SKIPDATA option is turned ON
if (ins->detail == NULL)
return;
detail = ins->detail;
m68k = &detail->m68k;
if (m68k->op_count)
printf("\top_count: %u\n", m68k->op_count);
print_read_write_regs(detail);
printf("\tgroups_count: %u\n", detail->groups_count);
for (i = 0; i < m68k->op_count; i++) {
cs_m68k_op* op = &(m68k->operands[i]);
switch((int)op->type) {
default:
break;
case M68K_OP_REG:
printf("\t\toperands[%u].type: REG = %s\n", i, cs_reg_name(handle, op->reg));
break;
case M68K_OP_IMM:
printf("\t\toperands[%u].type: IMM = 0x%x\n", i, (int)op->imm);
break;
case M68K_OP_MEM:
printf("\t\toperands[%u].type: MEM\n", i);
if (op->mem.base_reg != M68K_REG_INVALID)
printf("\t\t\toperands[%u].mem.base: REG = %s\n",
i, cs_reg_name(handle, op->mem.base_reg));
if (op->mem.index_reg != M68K_REG_INVALID) {
printf("\t\t\toperands[%u].mem.index: REG = %s\n",
i, cs_reg_name(handle, op->mem.index_reg));
printf("\t\t\toperands[%u].mem.index: size = %c\n",
i, op->mem.index_size ? 'l' : 'w');
}
if (op->mem.disp != 0)
printf("\t\t\toperands[%u].mem.disp: 0x%x\n", i, op->mem.disp);
if (op->mem.scale != 0)
printf("\t\t\toperands[%u].mem.scale: %d\n", i, op->mem.scale);
printf("\t\taddress mode: %s\n", s_addressing_modes[op->address_mode]);
break;
case M68K_OP_FP_SINGLE:
printf("\t\toperands[%u].type: FP_SINGLE\n", i);
printf("\t\t\toperands[%u].simm: %f\n", i, op->simm);
break;
case M68K_OP_FP_DOUBLE:
printf("\t\toperands[%u].type: FP_DOUBLE\n", i);
printf("\t\t\toperands[%u].dimm: %lf\n", i, op->dimm);
break;
case M68K_OP_REG_BITS:
printf("\t\toperands[%u].type: REG_BITS = $%x\n", i, op->register_bits);
}
}
printf("\n");
}
static void test()
{
#define M68K_CODE "\xf0\x10\xf0\x00\x48\xaf\xff\xff\x7f\xff\x11\xb0\x01\x37\x7f\xff\xff\xff\x12\x34\x56\x78\x01\x33\x10\x10\x10\x10\x32\x32\x32\x32\x4C\x00\x54\x04\x48\xe7\xe0\x30\x4C\xDF\x0C\x07\xd4\x40\x87\x5a\x4e\x71\x02\xb4\xc0\xde\xc0\xde\x5c\x00\x1d\x80\x71\x12\x01\x23\xf2\x3c\x44\x22\x40\x49\x0e\x56\x54\xc5\xf2\x3c\x44\x00\x44\x7a\x00\x00\xf2\x00\x0a\x28\x4E\xB9\x00\x00\x00\x12\x4E\x75"
struct platform platforms[] = {
{
CS_ARCH_M68K,
(cs_mode)(CS_MODE_BIG_ENDIAN | CS_MODE_M68K_040),
(unsigned char*)M68K_CODE,
sizeof(M68K_CODE) - 1,
"M68K",
},
};
uint64_t address = 0x01000;
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++) {
assert(address == insn[j].address && "this means the size of the previous instruction was incorrect");
address += insn[j].size;
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;
}