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/* Capstone Disassembly Engine */
/* M680X Backend by Wolfgang Schwotzer <wolfgang.schwotzer@gmx.net> 2017 */
#include <stdio.h>
#include <capstone/capstone.h>
void print_string_hex(char *comment, unsigned char *str, size_t len);
static const char *s_access[] = {
"UNCHANGED", "READ", "WRITE", "READ | WRITE",
};
void print_read_write_regs(csh handle, cs_detail *detail)
{
int i;
if (detail->regs_read_count > 0) {
printf("\treading from regs: ");
for (i = 0; i < detail->regs_read_count; ++i) {
if (i > 0)
printf(", ");
printf("%s", cs_reg_name(handle, detail->regs_read[i]));
}
printf("\n");
}
if (detail->regs_write_count > 0) {
printf("\twriting to regs: ");
for (i = 0; i < detail->regs_write_count; ++i) {
if (i > 0)
printf(", ");
printf("%s", cs_reg_name(handle,
detail->regs_write[i]));
}
printf("\n");
}
}
void print_insn_detail_m680x(csh handle, cs_insn *insn)
{
cs_detail *detail = insn->detail;
cs_m680x *m680x = NULL;
int i;
// detail can be NULL on "data" instruction if SKIPDATA option is
// turned ON
if (detail == NULL)
return;
m680x = &detail->m680x;
if (m680x->op_count)
printf("\top_count: %u\n", m680x->op_count);
for (i = 0; i < m680x->op_count; i++) {
cs_m680x_op *op = &(m680x->operands[i]);
const char *comment;
switch ((int)op->type) {
default:
break;
case M680X_OP_REGISTER:
comment = "";
if ((i == 0 && m680x->flags & M680X_FIRST_OP_IN_MNEM) ||
(i == 1 && m680x->flags &
M680X_SECOND_OP_IN_MNEM))
comment = " (in mnemonic)";
printf("\t\toperands[%u].type: REGISTER = %s%s\n", i,
cs_reg_name(handle, op->reg), comment);
break;
case M680X_OP_CONSTANT:
printf("\t\toperands[%u].type: CONSTANT = %u\n", i,
op->const_val);
break;
case M680X_OP_IMMEDIATE:
printf("\t\toperands[%u].type: IMMEDIATE = #%d\n", i,
op->imm);
break;
case M680X_OP_DIRECT:
printf("\t\toperands[%u].type: DIRECT = 0x%02X\n", i,
op->direct_addr);
break;
case M680X_OP_EXTENDED:
printf("\t\toperands[%u].type: EXTENDED %s = 0x%04X\n",
i, op->ext.indirect ? "INDIRECT" : "",
op->ext.address);
break;
case M680X_OP_RELATIVE:
printf("\t\toperands[%u].type: RELATIVE = 0x%04X\n", i,
op->rel.address);
break;
case M680X_OP_INDEXED:
printf("\t\toperands[%u].type: INDEXED%s\n", i,
(op->idx.flags & M680X_IDX_INDIRECT) ?
" INDIRECT" : "");
if (op->idx.base_reg != M680X_REG_INVALID)
printf("\t\t\tbase register: %s\n",
cs_reg_name(handle, op->idx.base_reg));
if (op->idx.offset_reg != M680X_REG_INVALID)
printf("\t\t\toffset register: %s\n",
cs_reg_name(handle, op->idx.offset_reg));
if ((op->idx.offset_bits != 0) &&
(op->idx.offset_reg == M680X_REG_INVALID) &&
!op->idx.inc_dec) {
printf("\t\t\toffset: %d\n", op->idx.offset);
if (op->idx.base_reg == M680X_REG_PC)
printf("\t\t\toffset address: 0x%X\n",
op->idx.offset_addr);
printf("\t\t\toffset bits: %u\n",
op->idx.offset_bits);
}
if (op->idx.inc_dec) {
const char *post_pre = op->idx.flags &
M680X_IDX_POST_INC_DEC ? "post" : "pre";
const char *inc_dec = (op->idx.inc_dec > 0) ?
"increment" : "decrement";
printf("\t\t\t%s %s: %d\n", post_pre, inc_dec,
abs(op->idx.inc_dec));
}
break;
}
if (op->size != 0)
printf("\t\t\tsize: %u\n", op->size);
if (op->access != CS_AC_INVALID)
printf("\t\t\taccess: %s\n", s_access[op->access]);
}
print_read_write_regs(handle, detail);
}