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/* Capstone Disassembly Engine */
/* M680X Backend by Wolfgang Schwotzer <wolfgang.schwotzer@gmx.net> 2017 */
#ifdef CAPSTONE_HAS_M680X
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <capstone/platform.h>
#include "../../cs_priv.h"
#include "../../MCInst.h"
#include "../../SStream.h"
#include "../../MCRegisterInfo.h"
#include "../../utils.h"
#include "M680XInstPrinter.h"
#include "M680XDisassembler.h"
#include "M680XDisassemblerInternals.h"
#ifndef CAPSTONE_DIET
static const char s_reg_names[][10] = {
"<invalid>", "a", "b", "e", "f", "0", "d", "w", "cc", "dp", "md",
"hx", "h", "x", "y", "s", "u", "v", "q", "pc", "tmp2", "tmp3",
};
static const char s_instruction_names[][6] = {
"invld", "aba", "abx", "aby", "adc", "adca", "adcb", "adcd", "adcr",
"add", "adda", "addb", "addd", "adde", "addf", "addr", "addw",
"aim", "ais", "aix", "and", "anda", "andb", "andcc", "andd", "andr",
"asl", "asla", "aslb", "asld",
"asr", "asra", "asrb", "asrd", "asrx",
"band",
"bcc", "bclr", "bcs", "beor", "beq", "bge", "bgnd", "bgt", "bhcc",
"bhcs", "bhi",
"biand", "bieor", "bih", "bil",
"bior", "bit", "bita", "bitb", "bitd", "bitmd", "ble", "bls", "blt",
"bmc",
"bmi", "bms",
"bne", "bor", "bpl", "brclr", "brset", "bra", "brn", "bset", "bsr",
"bvc", "bvs",
"call", "cba", "cbeq", "cbeqa", "cbeqx", "clc", "cli",
"clr", "clra", "clrb", "clrd", "clre", "clrf", "clrh", "clrw", "clrx",
"clv", "cmp",
"cmpa", "cmpb", "cmpd", "cmpe", "cmpf", "cmpr", "cmps", "cmpu", "cmpw",
"cmpx", "cmpy",
"com", "coma", "comb", "comd", "come", "comf", "comw", "comx", "cpd",
"cphx", "cps", "cpx", "cpy",
"cwai", "daa", "dbeq", "dbne", "dbnz", "dbnza", "dbnzx",
"dec", "deca", "decb", "decd", "dece", "decf", "decw",
"decx", "des", "dex", "dey",
"div", "divd", "divq", "ediv", "edivs", "eim", "emacs", "emaxd",
"emaxm", "emind", "eminm", "emul", "emuls",
"eor", "eora", "eorb", "eord", "eorr", "etbl",
"exg", "fdiv", "ibeq", "ibne", "idiv", "idivs", "illgl",
"inc", "inca", "incb", "incd", "ince", "incf", "incw", "incx",
"ins", "inx", "iny",
"jmp", "jsr",
"lbcc", "lbcs", "lbeq", "lbge", "lbgt", "lbhi", "lble", "lbls", "lblt",
"lbmi", "lbne", "lbpl", "lbra", "lbrn", "lbsr", "lbvc", "lbvs",
"lda", "ldaa", "ldab", "ldb", "ldbt", "ldd", "lde", "ldf", "ldhx",
"ldmd",
"ldq", "lds", "ldu", "ldw", "ldx", "ldy",
"leas", "leau", "leax", "leay",
"lsl", "lsla", "lslb", "lsld", "lslx",
"lsr", "lsra", "lsrb", "lsrd", "lsrw", "lsrx",
"maxa", "maxm", "mem", "mina", "minm", "mov", "movb", "movw", "mul",
"muld",
"neg", "nega", "negb", "negd", "negx",
"nop", "nsa", "oim", "ora", "oraa", "orab", "orb", "orcc", "ord", "orr",
"psha", "pshb", "pshc", "pshd", "pshh", "pshs", "pshsw", "pshu",
"pshuw", "pshx", "pshy",
"pula", "pulb", "pulc", "puld", "pulh", "puls", "pulsw", "pulu",
"puluw", "pulx", "puly", "rev", "revw",
"rol", "rola", "rolb", "rold", "rolw", "rolx",
"ror", "rora", "rorb", "rord", "rorw", "rorx",
"rsp", "rtc", "rti", "rts", "sba", "sbc", "sbca", "sbcb", "sbcd",
"sbcr",
"sec", "sei", "sev", "sex", "sexw", "slp", "sta", "staa", "stab", "stb",
"stbt", "std", "ste", "stf", "stop", "sthx",
"stq", "sts", "stu", "stw", "stx", "sty",
"sub", "suba", "subb", "subd", "sube", "subf", "subr", "subw",
"swi", "swi2", "swi3",
"sync", "tab", "tap", "tax", "tba", "tbeq", "tbl", "tbne", "test",
"tfm", "tfr",
"tim", "tpa",
"tst", "tsta", "tstb", "tstd", "tste", "tstf", "tstw", "tstx",
"tsx", "tsy", "txa", "txs", "tys", "wai", "wait", "wav", "wavr",
"xgdx", "xgdy",
};
static const name_map s_group_names[] = {
{ M680X_GRP_INVALID, "<invalid>" },
{ M680X_GRP_JUMP, "jump" },
{ M680X_GRP_CALL, "call" },
{ M680X_GRP_RET, "return" },
{ M680X_GRP_INT, "interrupt" },
{ M680X_GRP_IRET, "interrupt_return" },
{ M680X_GRP_PRIV, "privileged" },
{ M680X_GRP_BRAREL, "branch_relative" },
};
#endif
static void printRegName(cs_struct *handle, SStream *OS, unsigned int reg)
{
#ifndef CAPSTONE_DIET
SStream_concat(OS, handle->reg_name((csh)handle, reg));
#endif
}
static void printInstructionName(cs_struct *handle, SStream *OS,
unsigned int insn)
{
#ifndef CAPSTONE_DIET
SStream_concat(OS, handle->insn_name((csh)handle, insn));
#endif
}
static uint32_t get_unsigned(int32_t value, int byte_size)
{
switch (byte_size) {
case 1:
return (uint32_t)(value & 0xff);
case 2:
return (uint32_t)(value & 0xffff);
default:
case 4:
return (uint32_t)value;
}
}
static void printIncDec(bool isPost, SStream *O, m680x_info *info,
cs_m680x_op *op)
{
static const char s_inc_dec[][3] = { "--", "-", "", "+", "++" };
if (!op->idx.inc_dec)
return;
if ((!isPost && !(op->idx.flags & M680X_IDX_POST_INC_DEC)) ||
(isPost && (op->idx.flags & M680X_IDX_POST_INC_DEC))) {
const char *prePostfix = "";
if (info->cpu_type == M680X_CPU_TYPE_CPU12)
prePostfix = (op->idx.inc_dec < 0) ? "-" : "+";
else if (op->idx.inc_dec >= -2 && (op->idx.inc_dec <= 2)) {
prePostfix = (char *)s_inc_dec[op->idx.inc_dec + 2];
}
SStream_concat(O, prePostfix);
}
}
static void printOperand(MCInst *MI, SStream *O, m680x_info *info,
cs_m680x_op *op)
{
switch (op->type) {
case M680X_OP_REGISTER:
printRegName(MI->csh, O, op->reg);
break;
case M680X_OP_CONSTANT:
SStream_concat(O, "%u", op->const_val);
break;
case M680X_OP_IMMEDIATE:
if (MI->csh->imm_unsigned)
SStream_concat(O, "#%u",
get_unsigned(op->imm, op->size));
else
SStream_concat(O, "#%d", op->imm);
break;
case M680X_OP_INDEXED:
if (op->idx.flags & M680X_IDX_INDIRECT)
SStream_concat(O, "[");
if (op->idx.offset_reg != M680X_REG_INVALID)
printRegName(MI->csh, O, op->idx.offset_reg);
else if (op->idx.offset_bits > 0) {
if (op->idx.base_reg == M680X_REG_PC)
SStream_concat(O, "$%04x", op->idx.offset_addr);
else
SStream_concat(O, "%d", op->idx.offset);
}
else if (op->idx.inc_dec != 0 &&
info->cpu_type == M680X_CPU_TYPE_CPU12)
SStream_concat(O, "%d", abs(op->idx.inc_dec));
if (!(op->idx.flags & M680X_IDX_NO_COMMA))
SStream_concat(O, ", ");
printIncDec(false, O, info, op);
printRegName(MI->csh, O, op->idx.base_reg);
if (op->idx.base_reg == M680X_REG_PC &&
(op->idx.offset_bits > 0))
SStream_concat(O, "r");
printIncDec(true, O, info, op);
if (op->idx.flags & M680X_IDX_INDIRECT)
SStream_concat(O, "]");
break;
case M680X_OP_RELATIVE:
SStream_concat(O, "$%04x", op->rel.address);
break;
case M680X_OP_DIRECT:
SStream_concat(O, "$%02x", op->direct_addr);
break;
case M680X_OP_EXTENDED:
if (op->ext.indirect)
SStream_concat(O, "[$%04x]", op->ext.address);
else {
if (op->ext.address < 256) {
SStream_concat(O, ">$%04x", op->ext.address);
}
else {
SStream_concat(O, "$%04x", op->ext.address);
}
}
break;
default:
SStream_concat(O, "<invalid_operand>");
break;
}
}
static const char *getDelimiter(m680x_info *info, cs_m680x *m680x)
{
bool indexed = false;
int count = 0;
int i;
if (info->insn == M680X_INS_TFM)
return ", ";
if (m680x->op_count > 1) {
for (i = 0; i < m680x->op_count; ++i) {
if (m680x->operands[i].type == M680X_OP_INDEXED)
indexed = true;
if (m680x->operands[i].type != M680X_OP_REGISTER)
count++;
}
}
return (indexed && (count >= 1)) ? "; " : ", ";
};
void M680X_printInst(MCInst *MI, SStream *O, void *PrinterInfo)
{
m680x_info *info = (m680x_info *)PrinterInfo;
cs_m680x *m680x = &info->m680x;
cs_detail *detail = MI->flat_insn->detail;
int suppress_operands = 0;
const char *delimiter = getDelimiter(info, m680x);
int i;
if (detail != NULL)
memcpy(&detail->m680x, m680x, sizeof(cs_m680x));
if (info->insn == M680X_INS_INVLD || info->insn == M680X_INS_ILLGL) {
if (m680x->op_count)
SStream_concat(O, "fcb $%02x", m680x->operands[0].imm);
else
SStream_concat(O, "fcb $<unknown>");
return;
}
printInstructionName(MI->csh, O, info->insn);
SStream_concat(O, " ");
if ((m680x->flags & M680X_FIRST_OP_IN_MNEM) != 0)
suppress_operands++;
if ((m680x->flags & M680X_SECOND_OP_IN_MNEM) != 0)
suppress_operands++;
for (i = 0; i < m680x->op_count; ++i) {
if (i >= suppress_operands) {
printOperand(MI, O, info, &m680x->operands[i]);
if ((i + 1) != m680x->op_count)
SStream_concat(O, delimiter);
}
}
}
const char *M680X_reg_name(csh handle, unsigned int reg)
{
#ifndef CAPSTONE_DIET
if (reg >= ARR_SIZE(s_reg_names))
return NULL;
return s_reg_names[(int)reg];
#else
return NULL;
#endif
}
const char *M680X_insn_name(csh handle, unsigned int id)
{
#ifndef CAPSTONE_DIET
if (id >= ARR_SIZE(s_instruction_names))
return NULL;
else
return s_instruction_names[(int)id];
#else
return NULL;
#endif
}
const char *M680X_group_name(csh handle, unsigned int id)
{
#ifndef CAPSTONE_DIET
return id2name(s_group_names, ARR_SIZE(s_group_names), id);
#else
return NULL;
#endif
}
cs_err M680X_instprinter_init(cs_struct *ud)
{
#ifndef CAPSTONE_DIET
if (M680X_REG_ENDING != ARR_SIZE(s_reg_names)) {
CS_ASSERT(M680X_REG_ENDING == ARR_SIZE(s_reg_names));
return CS_ERR_MODE;
}
if (M680X_INS_ENDING != ARR_SIZE(s_instruction_names)) {
CS_ASSERT(M680X_INS_ENDING == ARR_SIZE(s_instruction_names));
return CS_ERR_MODE;
}
if (M680X_GRP_ENDING != ARR_SIZE(s_group_names)) {
CS_ASSERT(M680X_GRP_ENDING == ARR_SIZE(s_group_names));
return CS_ERR_MODE;
}
#endif
return CS_ERR_OK;
}
#endif
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