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400 lines
9.3 KiB
400 lines
9.3 KiB
/* Capstone Disassembler Engine */
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/* M680X Backend by Wolfgang Schwotzer <wolfgang.schwotzer@gmx.net> 2017 */
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#include <stdio.h>
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#include <string.h>
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#include <capstone/platform.h>
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#include <capstone/capstone.h>
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#define ARR_SIZE(a) (sizeof(a)/sizeof(a[0]))
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#define WITH_DETAILS
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struct platform {
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cs_arch arch;
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cs_mode mode;
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unsigned char *code;
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size_t size;
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const char *comment;
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};
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static void print_string_hex(const char *comment, unsigned char *str, size_t len)
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{
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unsigned char *c;
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printf("%s", comment);
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for (c = str; c < str + len; c++)
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printf("0x%02X ", *c & 0xff);
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printf("\n");
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}
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static void print_string_hex_short(unsigned char *str, size_t len)
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{
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unsigned char *c;
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for (c = str; c < str + len; c++)
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printf("%02X", *c & 0xff);
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}
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static const char *s_access[] = {
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"UNCHANGED", "READ", "WRITE", "READ | WRITE",
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};
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static void print_read_write_regs(csh handle, cs_detail *detail)
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{
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int i;
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if (detail->regs_read_count > 0) {
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printf("\tRegisters read:");
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for (i = 0; i < detail->regs_read_count; ++i)
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printf(" %s",
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cs_reg_name(handle, detail->regs_read[i]));
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printf("\n");
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}
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if (detail->regs_write_count > 0) {
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printf("\tRegisters modified:");
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for (i = 0; i < detail->regs_write_count; ++i)
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printf(" %s",
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cs_reg_name(handle, detail->regs_write[i]));
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printf("\n");
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}
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}
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static void print_insn_detail(csh handle, cs_insn *insn)
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{
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cs_detail *detail = insn->detail;
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cs_m680x *m680x = NULL;
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int i;
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// detail can be NULL on "data" instruction if SKIPDATA option is turned ON
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if (detail == NULL)
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return;
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m680x = &detail->m680x;
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if (m680x->op_count)
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printf("\top_count: %u\n", m680x->op_count);
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for (i = 0; i < m680x->op_count; i++) {
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cs_m680x_op *op = &(m680x->operands[i]);
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const char *comment;
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switch ((int)op->type) {
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default:
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break;
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case M680X_OP_REGISTER:
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comment = "";
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if ((i == 0 && (m680x->flags &
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M680X_FIRST_OP_IN_MNEM)) ||
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((i == 1 && (m680x->flags &
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M680X_SECOND_OP_IN_MNEM))))
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comment = " (in mnemonic)";
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printf("\t\toperands[%u].type: REGISTER = %s%s\n", i,
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cs_reg_name(handle, op->reg), comment);
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break;
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case M680X_OP_CONSTANT:
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printf("\t\toperands[%u].type: CONSTANT = %u\n", i,
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op->const_val);
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break;
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case M680X_OP_IMMEDIATE:
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printf("\t\toperands[%u].type: IMMEDIATE = #%d\n", i,
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op->imm);
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break;
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case M680X_OP_DIRECT:
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printf("\t\toperands[%u].type: DIRECT = 0x%02X\n", i,
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op->direct_addr);
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break;
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case M680X_OP_EXTENDED:
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printf("\t\toperands[%u].type: EXTENDED %s = 0x%04X\n",
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i, op->ext.indirect ? "INDIRECT" : "",
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op->ext.address);
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break;
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case M680X_OP_RELATIVE:
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printf("\t\toperands[%u].type: RELATIVE = 0x%04X\n", i,
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op->rel.address);
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break;
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case M680X_OP_INDEXED:
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printf("\t\toperands[%u].type: INDEXED%s\n", i,
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(op->idx.flags & M680X_IDX_INDIRECT) ?
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" INDIRECT" : "");
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if (op->idx.base_reg != M680X_REG_INVALID)
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printf("\t\t\tbase register: %s\n",
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cs_reg_name(handle, op->idx.base_reg));
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if (op->idx.offset_reg != M680X_REG_INVALID)
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printf("\t\t\toffset register: %s\n",
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cs_reg_name(handle, op->idx.offset_reg));
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if ((op->idx.offset_bits != 0) &&
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(op->idx.offset_reg == M680X_REG_INVALID) &&
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!op->idx.inc_dec) {
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printf("\t\t\toffset: %d\n", op->idx.offset);
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if (op->idx.base_reg == M680X_REG_PC)
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printf("\t\t\toffset address: 0x%X\n",
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op->idx.offset_addr);
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printf("\t\t\toffset bits: %u\n",
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op->idx.offset_bits);
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}
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if (op->idx.inc_dec) {
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const char *post_pre = op->idx.flags &
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M680X_IDX_POST_INC_DEC ? "post" : "pre";
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const char *inc_dec = (op->idx.inc_dec > 0) ?
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"increment" : "decrement";
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printf("\t\t\t%s %s: %d\n", post_pre, inc_dec,
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abs(op->idx.inc_dec));
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}
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break;
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}
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if (op->size != 0)
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printf("\t\t\tsize: %u\n", op->size);
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if (op->access != CS_AC_INVALID)
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printf("\t\t\taccess: %s\n", s_access[op->access]);
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}
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print_read_write_regs(handle, detail);
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if (detail->groups_count) {
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printf("\tgroups_count: %u\n", detail->groups_count);
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}
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printf("\n");
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}
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static bool consistency_checks()
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{
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return true;
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}
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static void test()
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{
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#define M6800_CODE \
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"\x01\x09\x36\x64\x7f\x74\x10\x00\x90\x10\xA4\x10\xb6\x10\x00\x39"
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#define M6801_CODE \
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"\x04\x05\x3c\x3d\x38\x93\x10\xec\x10\xed\x10\x39"
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#define M6805_CODE \
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"\x04\x7f\x00\x17\x22\x28\x00\x2e\x00\x40\x42\x5a\x70\x8e\x97\x9c" \
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"\xa0\x15\xad\x00\xc3\x10\x00\xda\x12\x34\xe5\x7f\xfe"
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#define M6808_CODE \
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"\x31\x22\x00\x35\x22\x45\x10\x00\x4b\x00\x51\x10\x52\x5e\x22\x62" \
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"\x65\x12\x34\x72\x84\x85\x86\x87\x8a\x8b\x8c\x94\x95\xa7\x10\xaf\x10" \
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"\x9e\x60\x7f\x9e\x6b\x7f\x00\x9e\xd6\x10\x00\x9e\xe6\x7f"
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#define HCS08_CODE \
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"\x32\x10\x00\x9e\xae\x9e\xce\x7f\x9e\xbe\x10\x00\x9e\xfe\x7f" \
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"\x3e\x10\x00\x9e\xf3\x7f\x96\x10\x00\x9e\xff\x7f\x82"
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#define M6811_CODE \
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"\x02\x03\x12\x7f\x10\x00\x13\x99\x08\x00\x14\x7f\x02\x15\x7f\x01" \
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"\x1e\x7f\x20\x00\x8f\xcf" \
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"\x18\x08\x18\x30\x18\x3c\x18\x67\x18\x8c\x10\x00\x18\x8f" \
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"\x18\xce\x10\x00\x18\xff\x10\x00" \
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"\x1a\xa3\x7f\x1a\xac\x1a\xee\x7f\x1a\xef\x7f\xcd\xac\x7f"
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#define CPU12_CODE \
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"\x00\x04\x01\x00\x0c\x00\x80\x0e\x00\x80\x00\x11\x1e\x10\x00\x80\x00" \
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"\x3b\x4a\x10\x00\x04\x4b\x01\x04\x4f\x7f\x80\x00\x8f\x10\x00\xb7\x52" \
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"\xb7\xb1\xa6\x67\xa6\xfe\xa6\xf7\x18\x02\xe2\x30\x39\xe2\x10\x00" \
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"\x18\x0c\x30\x39\x10\x00\x18\x11\x18\x12\x10\x00\x18\x19\x00\x18\x1e\x00" \
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"\x18\x3e\x18\x3f\x00"
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#define HD6301_CODE \
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"\x6b\x10\x00\x71\x10\x00\x72\x10\x10\x39"
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#define M6809_CODE \
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"\x06\x10\x19\x1a\x55\x1e\x01\x23\xe9\x31\x06\x34\x55\xa6\x81" \
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"\xa7\x89\x7f\xff\xa6\x9d\x10\x00\xa7\x91\xa6\x9f\x10\x00" \
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"\x11\xac\x99\x10\x00\x39" \
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\
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"\xA6\x07\xA6\x27\xA6\x47\xA6\x67\xA6\x0F\xA6\x10" \
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"\xA6\x80\xA6\x81\xA6\x82\xA6\x83\xA6\x84\xA6\x85\xA6\x86" \
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"\xA6\x88\x7F\xA6\x88\x80\xA6\x89\x7F\xFF\xA6\x89\x80\x00" \
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"\xA6\x8B\xA6\x8C\x10\xA6\x8D\x10\x00" \
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\
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"\xA6\x91\xA6\x93\xA6\x94\xA6\x95\xA6\x96" \
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"\xA6\x98\x7F\xA6\x98\x80\xA6\x99\x7F\xFF\xA6\x99\x80\x00" \
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"\xA6\x9B\xA6\x9C\x10\xA6\x9D\x10\x00\xA6\x9F\x10\x00"
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#define HD6309_CODE \
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"\x01\x10\x10\x62\x10\x10\x7b\x10\x10\x00\xcd\x49\x96\x02\xd2" \
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"\x10\x30\x23\x10\x38\x10\x3b\x10\x53\x10\x5d" \
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"\x11\x30\x43\x10\x11\x37\x25\x10\x11\x38\x12\x11\x39\x23\x11\x3b\x34" \
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"\x11\x8e\x10\x00\x11\xaf\x10\x11\xab\x10\x11\xf6\x80\x00"
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struct platform platforms[] = {
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{
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CS_ARCH_M680X,
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(cs_mode)(CS_MODE_M680X_6301),
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(unsigned char *)HD6301_CODE,
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sizeof(HD6301_CODE) - 1,
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"M680X_HD6301",
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},
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{
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CS_ARCH_M680X,
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(cs_mode)(CS_MODE_M680X_6309),
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(unsigned char *)HD6309_CODE,
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sizeof(HD6309_CODE) - 1,
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"M680X_HD6309",
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},
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{
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CS_ARCH_M680X,
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(cs_mode)(CS_MODE_M680X_6800),
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(unsigned char *)M6800_CODE,
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sizeof(M6800_CODE) - 1,
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"M680X_M6800",
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},
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{
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CS_ARCH_M680X,
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(cs_mode)(CS_MODE_M680X_6801),
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(unsigned char *)M6801_CODE,
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sizeof(M6801_CODE) - 1,
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"M680X_M6801",
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},
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{
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CS_ARCH_M680X,
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(cs_mode)(CS_MODE_M680X_6805),
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(unsigned char *)M6805_CODE,
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sizeof(M6805_CODE) - 1,
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"M680X_M68HC05",
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},
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{
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CS_ARCH_M680X,
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(cs_mode)(CS_MODE_M680X_6808),
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(unsigned char *)M6808_CODE,
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sizeof(M6808_CODE) - 1,
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"M680X_M68HC08",
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},
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{
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CS_ARCH_M680X,
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(cs_mode)(CS_MODE_M680X_6809),
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(unsigned char *)M6809_CODE,
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sizeof(M6809_CODE) - 1,
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"M680X_M6809",
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},
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{
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CS_ARCH_M680X,
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(cs_mode)(CS_MODE_M680X_6811),
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(unsigned char *)M6811_CODE,
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sizeof(M6811_CODE) - 1,
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"M680X_M68HC11",
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},
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{
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CS_ARCH_M680X,
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(cs_mode)(CS_MODE_M680X_CPU12),
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(unsigned char *)CPU12_CODE,
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sizeof(CPU12_CODE) - 1,
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"M680X_CPU12",
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},
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{
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CS_ARCH_M680X,
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(cs_mode)(CS_MODE_M680X_HCS08),
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(unsigned char *)HCS08_CODE,
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sizeof(HCS08_CODE) - 1,
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"M680X_HCS08",
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},
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};
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uint64_t address = 0x1000;
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csh handle;
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cs_insn *insn;
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int i;
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size_t count;
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const char *nine_spaces = " ";
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if (!consistency_checks())
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abort();
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for (i = 0; i < sizeof(platforms) / sizeof(platforms[0]); i++) {
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cs_err err = cs_open(platforms[i].arch, platforms[i].mode,
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&handle);
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if (err) {
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printf("Failed on cs_open() with error returned: %u\n",
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err);
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abort();
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}
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#ifdef WITH_DETAILS
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cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON);
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#endif
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count = cs_disasm(handle, platforms[i].code, platforms[i].size,
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address, 0, &insn);
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if (count) {
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size_t j;
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printf("********************\n");
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printf("Platform: %s\n", platforms[i].comment);
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print_string_hex("Code: ", platforms[i].code,
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platforms[i].size);
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printf("Disasm:\n");
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for (j = 0; j < count; j++) {
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int slen;
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printf("0x%04X: ", (uint16_t)insn[j].address);
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print_string_hex_short(insn[j].bytes,
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insn[j].size);
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printf("%.*s", 1 + ((5 - insn[j].size) * 2),
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nine_spaces);
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printf("%s", insn[j].mnemonic);
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slen = (int)strlen(insn[j].mnemonic);
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printf("%.*s", 1 + (5 - slen), nine_spaces);
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printf("%s\n", insn[j].op_str);
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#ifdef WITH_DETAILS
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print_insn_detail(handle, &insn[j]);
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#endif
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}
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// free memory allocated by cs_disasm()
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cs_free(insn, count);
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}
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else {
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printf("********************\n");
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printf("Platform: %s\n", platforms[i].comment);
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print_string_hex("Code:", platforms[i].code,
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platforms[i].size);
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printf("ERROR: Failed to disasm given code!\n");
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abort();
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}
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cs_close(&handle);
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}
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}
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int main()
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{
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test();
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return 0;
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}
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