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disasm.cpp
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#include "sysconfig.h"
#include "sysdeps.h"
#include "options.h"
#include "debug.h"
#include "memory.h"
#include "newcpu.h"
#include "fpp.h"
#include "debugmem.h"
#include "disasm.h"
struct cpum2c m2cregs[] = {
{ 0, 31, _T("SFC") },
{ 1, 31, _T("DFC") },
{ 2, 30, _T("CACR") },
{ 3, 24, _T("TC") },
{ 4, 24, _T("ITT0") },
{ 5, 24, _T("ITT1") },
{ 6, 24, _T("DTT0") },
{ 7, 24, _T("DTT1") },
{ 8, 16, _T("BUSC") },
{ 0x800, 31, _T("USP") },
{ 0x801, 31, _T("VBR") },
{ 0x802, 6, _T("CAAR") },
{ 0x803, 15, _T("MSP") },
{ 0x804, 31, _T("ISP") },
{ 0x805, 8, _T("MMUS") },
{ 0x806, 12, _T("URP") },
{ 0x807, 12, _T("SRP") },
{ 0x808, 16, _T("PCR") },
{ -1, 0, NULL }
};
const TCHAR *fpsizes[] = {
_T("L"),
_T("S"),
_T("X"),
_T("P"),
_T("W"),
_T("D"),
_T("B"),
_T("P")
};
static const wordsizes fpsizeconv[] = {
sz_long,
sz_single,
sz_extended,
sz_packed,
sz_word,
sz_double,
sz_byte,
sz_packed
};
static const int datasizes[] = {
1,
2,
4,
4,
8,
12,
12
};
static void showea_val(TCHAR *buffer, uae_u16 opcode, uaecptr addr, int size)
{
struct mnemolookup *lookup;
struct instr *table = &table68k[opcode];
if (addr >= 0xe90000 && addr < 0xf00000)
goto skip;
if (addr >= 0xdff000 && addr < 0xe00000)
goto skip;
for (lookup = lookuptab; lookup->mnemo != table->mnemo; lookup++)
;
if (!(lookup->flags & 1))
goto skip;
buffer += _tcslen(buffer);
if (debug_safe_addr(addr, datasizes[size])) {
bool cached = false;
switch (size)
{
case sz_byte:
{
uae_u8 v = get_byte_cache_debug(addr, &cached);
uae_u8 v2 = v;
if (cached)
v2 = get_byte_debug(addr);
if (v != v2) {
_stprintf(buffer, _T(" [%02x:%02x]"), v, v2);
} else {
_stprintf(buffer, _T(" [%s%02x]"), cached ? _T("*") : _T(""), v);
}
}
break;
case sz_word:
{
uae_u16 v = get_word_cache_debug(addr, &cached);
uae_u16 v2 = v;
if (cached)
v2 = get_word_debug(addr);
if (v != v2) {
_stprintf(buffer, _T(" [%04x:%04x]"), v, v2);
} else {
_stprintf(buffer, _T(" [%s%04x]"), cached ? _T("*") : _T(""), v);
}
}
break;
case sz_long:
{
uae_u32 v = get_long_cache_debug(addr, &cached);
uae_u32 v2 = v;
if (cached)
v2 = get_long_debug(addr);
if (v != v2) {
_stprintf(buffer, _T(" [%08x:%08x]"), v, v2);
} else {
_stprintf(buffer, _T(" [%s%08x]"), cached ? _T("*") : _T(""), v);
}
}
break;
case sz_single:
{
fpdata fp;
fpp_to_single(&fp, get_long_debug(addr));
_stprintf(buffer, _T("[%s]"), fpp_print(&fp, 0));
}
break;
case sz_double:
{
fpdata fp;
fpp_to_double(&fp, get_long_debug(addr), get_long_debug(addr + 4));
_stprintf(buffer, _T("[%s]"), fpp_print(&fp, 0));
}
break;
case sz_extended:
{
fpdata fp;
fpp_to_exten(&fp, get_long_debug(addr), get_long_debug(addr + 4), get_long_debug(addr + 8));
_stprintf(buffer, _T("[%s]"), fpp_print(&fp, 0));
break;
}
case sz_packed:
_stprintf(buffer, _T("[%08x%08x%08x]"), get_long_debug(addr), get_long_debug(addr + 4), get_long_debug(addr + 8));
break;
}
}
skip:
for (int i = 0; i < size; i++) {
TCHAR name[256];
if (debugmem_get_symbol(addr + i, name, sizeof(name) / sizeof(TCHAR))) {
_stprintf(buffer + _tcslen(buffer), _T(" %s"), name);
}
}
}
uaecptr ShowEA_disp(uaecptr *pcp, uaecptr base, TCHAR *buffer, const TCHAR *name, bool pcrel)
{
uaecptr addr;
uae_u16 dp;
int r;
uae_u32 dispreg;
uaecptr pc = *pcp;
TCHAR mult[20];
TCHAR *p = NULL;
dp = get_iword_debug(pc);
pc += 2;
r = (dp & 0x7000) >> 12; // REGISTER
dispreg = dp & 0x8000 ? m68k_areg(regs, r) : m68k_dreg(regs, r);
if (!(dp & 0x800)) { // W/L
dispreg = (uae_s32)(uae_s16)(dispreg);
}
int m = 1 << ((dp >> 9) & 3);
mult[0] = 0;
if (currprefs.cpu_model >= 68020) {
dispreg <<= (dp >> 9) & 3; // SCALE
}
if (buffer)
buffer[0] = 0;
if ((dp & 0x100) && currprefs.cpu_model >= 68020) {
TCHAR dr[20];
uae_s32 outer = 0, disp = 0;
// Full format extension (68020+)
if (m > 1 && buffer) {
_stprintf(mult, _T("*%d"), m);
}
if (dp & 0x80) { // BS (base register suppress)
base = 0;
if (buffer)
name = NULL;
}
if (buffer)
_stprintf(dr, _T("%c%d.%c"), dp & 0x8000 ? 'A' : 'D', (int)r, dp & 0x800 ? 'L' : 'W');
if (dp & 0x40) { // IS (index suppress)
dispreg = 0;
dr[0] = 0;
}
if (buffer) {
_tcscpy(buffer, _T("("));
p = buffer + _tcslen(buffer);
if (dp & 3) {
// indirect
_stprintf(p, _T("["));
p += _tcslen(p);
} else {
// (an,dn,word/long)
if (name) {
_stprintf(p, _T("%s,"), name);
p += _tcslen(p);
}
if (dr[0]) {
_stprintf(p, _T("%s%s,"), dr, mult);
p += _tcslen(p);
}
}
}
if ((dp & 0x30) == 0x20) { // BD SIZE = 2 (WORD)
disp = (uae_s32)(uae_s16)get_iword_debug(pc);
if (buffer) {
_stprintf(p, _T("$%04x,"), (uae_s16)disp);
p += _tcslen(p);
}
pc += 2;
base += disp;
} else if ((dp & 0x30) == 0x30) { // BD SIZE = 3 (LONG)
disp = get_ilong_debug(pc);
if (buffer) {
_stprintf(p, _T("$%08x,"), disp);
p += _tcslen(p);
}
pc += 4;
base += disp;
}
if ((dp & 3) && buffer) {
if (name) {
_stprintf(p, _T("%s,"), name);
p += _tcslen(p);
}
if (!(dp & 0x04)) {
if (dr[0]) {
_stprintf(p, _T("%s%s,"), dr, mult);
p += _tcslen(p);
}
}
if (p[-1] == ',')
p--;
_stprintf(p, _T("],"));
p += _tcslen(p);
if ((dp & 0x04)) {
if (dr[0]) {
_stprintf(p, _T("%s%s,"), dr, mult);
p += _tcslen(p);
}
}
}
if ((dp & 0x03) == 0x02) {
outer = (uae_s32)(uae_s16)get_iword_debug(pc);
if (buffer) {
_stprintf(p, _T("$%04x,"), (uae_s16)outer);
p += _tcslen(p);
}
pc += 2;
} else if ((dp & 0x03) == 0x03) {
outer = get_ilong_debug(pc);
if (buffer) {
_stprintf(p, _T("$%08x,"), outer);
p += _tcslen(p);
}
pc += 4;
}
if (buffer) {
if (p[-1] == ',')
p--;
_stprintf(p, _T(")"));
p += _tcslen(p);
}
if ((dp & 0x4) == 0)
base += dispreg;
if (dp & 0x3)
base = get_long_debug(base);
if (dp & 0x4)
base += dispreg;
addr = base + outer;
if (buffer) {
_stprintf(p, _T(" == $%08x"), addr);
p += _tcslen(p);
}
} else {
// Brief format extension
TCHAR regstr[20];
uae_s8 disp8 = dp & 0xFF;
if (m > 1 && buffer) {
if (currprefs.cpu_model < 68020) {
_stprintf(mult, _T("[*%d]"), m);
} else {
_stprintf(mult, _T("*%d"), m);
}
}
regstr[0] = 0;
_stprintf(regstr, _T(",%c%d.%c"), dp & 0x8000 ? 'A' : 'D', (int)r, dp & 0x800 ? 'L' : 'W');
addr = base + (uae_s32)((uae_s8)disp8) + dispreg;
if (buffer) {
if (pcrel) {
_stprintf(buffer, _T("(%s%s%s,$%02x=$%08x) == $%08x"), name, regstr, mult, (uae_u8)disp8, (*pcp) += disp8, addr);
} else {
_stprintf(buffer, _T("(%s%s%s,$%02x) == $%08x"), name, regstr, mult, (uae_u8)disp8, addr);
}
if (((dp & 0x0100) || m != 1) && currprefs.cpu_model < 68020) {
_tcscat(buffer, _T(" (68020+)"));
}
}
}
*pcp = pc;
return addr;
}
uaecptr ShowEA(void *f, uaecptr pc, uae_u16 opcode, int reg, amodes mode, wordsizes size, TCHAR *buf, uae_u32 *eaddr, int *actualea, int safemode)
{
uaecptr addr = pc;
uae_s16 disp16;
uae_s32 offset = 0;
TCHAR buffer[80];
if (actualea)
*actualea = 1;
if ((opcode & 0xf0ff) == 0x60ff && currprefs.cpu_model < 68020) {
// bcc.l is bcc.s if 68000/68010
mode = immi;
}
buffer[0] = 0;
switch (mode){
case Dreg:
_stprintf (buffer, _T("D%d"), reg);
if (actualea)
*actualea = 0;
break;
case Areg:
_stprintf (buffer, _T("A%d"), reg);
if (actualea)
*actualea = 0;
break;
case Aind:
_stprintf (buffer, _T("(A%d)"), reg);
addr = regs.regs[reg + 8];
showea_val(buffer, opcode, addr, size);
break;
case Aipi:
_stprintf (buffer, _T("(A%d)+"), reg);
addr = regs.regs[reg + 8];
showea_val(buffer, opcode, addr, size);
break;
case Apdi:
_stprintf (buffer, _T("-(A%d)"), reg);
addr = regs.regs[reg + 8] - datasizes[size];
showea_val(buffer, opcode, addr, size);
break;
case Ad16:
{
TCHAR offtxt[8];
disp16 = get_iword_debug (pc); pc += 2;
if (disp16 < 0)
_stprintf (offtxt, _T("-$%04x"), -disp16);
else
_stprintf (offtxt, _T("$%04x"), disp16);
addr = m68k_areg (regs, reg) + disp16;
_stprintf (buffer, _T("(A%d,%s) == $%08x"), reg, offtxt, addr);
showea_val(buffer, opcode, addr, size);
}
break;
case Ad8r:
{
TCHAR name[10];
_stprintf(name, _T("A%d"), reg);
addr = ShowEA_disp(&pc, m68k_areg(regs, reg), buffer, name, false);
showea_val(buffer, opcode, addr, size);
}
break;
case PC16:
disp16 = get_iword_debug (pc); pc += 2;
addr += (uae_s16)disp16;
_stprintf (buffer, _T("(PC,$%04x) == $%08x"), disp16 & 0xffff, addr);
showea_val(buffer, opcode, addr, size);
break;
case PC8r:
{
addr = ShowEA_disp(&pc, addr, buffer, _T("PC"), true);
showea_val(buffer, opcode, addr, size);
}
break;
case absw:
addr = (uae_s32)(uae_s16)get_iword_debug (pc);
_stprintf (buffer, _T("$%04x"), (uae_u16)addr);
pc += 2;
showea_val(buffer, opcode, addr, size);
break;
case absl:
addr = get_ilong_debug (pc);
_stprintf (buffer, _T("$%08x"), addr);
pc += 4;
showea_val(buffer, opcode, addr, size);
break;
case imm:
if (actualea)
*actualea = 0;
switch (size){
case sz_byte:
_stprintf (buffer, _T("#$%02x"), (get_iword_debug (pc) & 0xff));
pc += 2;
break;
case sz_word:
_stprintf (buffer, _T("#$%04x"), (get_iword_debug (pc) & 0xffff));
pc += 2;
break;
case sz_long:
_stprintf(buffer, _T("#$%08x"), (get_ilong_debug(pc)));
pc += 4;
break;
case sz_single:
{
fpdata fp;
fpp_to_single(&fp, get_ilong_debug(pc));
_stprintf(buffer, _T("#%s"), fpp_print(&fp, 0));
pc += 4;
}
break;
case sz_double:
{
fpdata fp;
fpp_to_double(&fp, get_ilong_debug(pc), get_ilong_debug(pc + 4));
_stprintf(buffer, _T("#%s"), fpp_print(&fp, 0));
pc += 8;
}
break;
case sz_extended:
{
fpdata fp;
fpp_to_exten(&fp, get_ilong_debug(pc), get_ilong_debug(pc + 4), get_ilong_debug(pc + 8));
_stprintf(buffer, _T("#%s"), fpp_print(&fp, 0));
pc += 12;
break;
}
case sz_packed:
_stprintf(buffer, _T("#$%08x%08x%08x"), get_ilong_debug(pc), get_ilong_debug(pc + 4), get_ilong_debug(pc + 8));
pc += 12;
break;
default:
break;
}
break;
case imm0:
offset = (uae_s32)(uae_s8)get_iword_debug (pc);
_stprintf (buffer, _T("#$%02x"), (uae_u32)(offset & 0xff));
addr = pc + 2 + offset;
if ((opcode & 0xf000) == 0x6000) {
showea_val(buffer, opcode, addr, 1);
}
pc += 2;
if (actualea)
*actualea = 0;
break;
case imm1:
offset = (uae_s32)(uae_s16)get_iword_debug (pc);
buffer[0] = 0;
_stprintf (buffer, _T("#$%04x"), (uae_u32)(offset & 0xffff));
addr = pc + offset;
if ((opcode & 0xf000) == 0x6000) {
showea_val(buffer, opcode, addr, 2);
}
pc += 2;
if (actualea)
*actualea = 0;
break;
case imm2:
offset = (uae_s32)get_ilong_debug (pc);
_stprintf (buffer, _T("#$%08x"), (uae_u32)offset);
addr = pc + offset;
if ((opcode & 0xf000) == 0x6000) {
showea_val(buffer, opcode, addr, 4);
}
pc += 4;
if (actualea)
*actualea = 0;
break;
case immi:
offset = (uae_s32)(uae_s8)(reg & 0xff);
_stprintf (buffer, _T("#$%02x"), (uae_u8)offset);
addr = pc + offset;
if (actualea)
*actualea = 0;
break;
default:
break;
}
if (buf == NULL)
f_out (f, _T("%s"), buffer);
else
_tcscat (buf, buffer);
if (eaddr)
*eaddr = addr;
return pc;
}
static const TCHAR *ccnames[] =
{
_T("T "),_T("F "),_T("HI"),_T("LS"),_T("CC"),_T("CS"),_T("NE"),_T("EQ"),
_T("VC"),_T("VS"),_T("PL"),_T("MI"),_T("GE"),_T("LT"),_T("GT"),_T("LE")
};
static const TCHAR *fpccnames[] =
{
_T("F"),
_T("EQ"),
_T("OGT"),
_T("OGE"),
_T("OLT"),
_T("OLE"),
_T("OGL"),
_T("OR"),
_T("UN"),
_T("UEQ"),
_T("UGT"),
_T("UGE"),
_T("ULT"),
_T("ULE"),
_T("NE"),
_T("T"),
_T("SF"),
_T("SEQ"),
_T("GT"),
_T("GE"),
_T("LT"),
_T("LE"),
_T("GL"),
_T("GLE"),
_T("NGLE"),
_T("NGL"),
_T("NLE"),
_T("NLT"),
_T("NGE"),
_T("NGT"),
_T("SNE"),
_T("ST")
};
const TCHAR *fpuopcodes[] =
{
_T("FMOVE"),
_T("FINT"),
_T("FSINH"),
_T("FINTRZ"),
_T("FSQRT"),
NULL,
_T("FLOGNP1"),
NULL,
_T("FETOXM1"),
_T("FTANH"),
_T("FATAN"),
NULL,
_T("FASIN"),
_T("FATANH"),
_T("FSIN"),
_T("FTAN"),
_T("FETOX"), // 0x10
_T("FTWOTOX"),
_T("FTENTOX"),
NULL,
_T("FLOGN"),
_T("FLOG10"),
_T("FLOG2"),
NULL,
_T("FABS"),
_T("FCOSH"),
_T("FNEG"),
NULL,
_T("FACOS"),
_T("FCOS"),
_T("FGETEXP"),
_T("FGETMAN"),
_T("FDIV"), // 0x20
_T("FMOD"),
_T("FADD"),
_T("FMUL"),
_T("FSGLDIV"),
_T("FREM"),
_T("FSCALE"),
_T("FSGLMUL"),
_T("FSUB"),
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
_T("FSINCOS"), // 0x30
_T("FSINCOS"),
_T("FSINCOS"),
_T("FSINCOS"),
_T("FSINCOS"),
_T("FSINCOS"),
_T("FSINCOS"),
_T("FSINCOS"),
_T("FCMP"),
NULL,
_T("FTST"),
NULL,
NULL,
NULL,
NULL,
NULL,
_T("FSMOVE"), // 0x40
_T("FSSQRT"),
NULL,
NULL,
_T("FDMOVE"),
_T("FDSQRT"),
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL, // 0x50
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
_T("FSABS"),
NULL,
_T("FSNEG"),
NULL,
_T("FDABS"),
NULL,
_T("FDNEG"),
NULL,
_T("FSDIV"), // 0x60
NULL,
_T("FSADD"),
_T("FSMUL"),
_T("FDDIV"),
NULL,
_T("FDADD"),
_T("FDMUL"),
_T("FSSUB"),
NULL,
NULL,
NULL,
_T("FDSUB"),
NULL,
NULL,
NULL,
NULL, // 0x70
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
_T("ILLG") // 0x80
};
static const TCHAR *movemregs[] =
{
_T("D0"),
_T("D1"),
_T("D2"),
_T("D3"),
_T("D4"),
_T("D5"),
_T("D6"),
_T("D7"),
_T("A0"),
_T("A1"),
_T("A2"),
_T("A3"),
_T("A4"),
_T("A5"),
_T("A6"),
_T("A7"),
_T("FP0"),
_T("FP1"),
_T("FP2"),
_T("FP3"),
_T("FP4"),
_T("FP5"),
_T("FP6"),
_T("FP7"),
_T("FPCR"),
_T("FPSR"),
_T("FPIAR")
};
static void addmovemreg (TCHAR *out, int *prevreg, int *lastreg, int *first, int reg, int fpmode)
{
TCHAR *p = out + _tcslen (out);
if (*prevreg < 0) {
*prevreg = reg;
*lastreg = reg;
return;
}
if (reg < 0 || fpmode == 2 || (*prevreg) + 1 != reg || (reg & 8) != ((*prevreg & 8))) {
_stprintf (p, _T("%s%s"), (*first) ? _T("") : _T("/"), movemregs[*lastreg]);
p = p + _tcslen (p);
if (*lastreg != *prevreg) {
if ((*lastreg) + 2 == reg) {
_stprintf(p, _T("/%s"), movemregs[*prevreg]);
} else if ((*lastreg) != (*prevreg)) {
_stprintf(p, _T("-%s"), movemregs[*prevreg]);
}
}
*lastreg = reg;
*first = 0;
}
*prevreg = reg;
}
static bool movemout (TCHAR *out, uae_u16 mask, int mode, int fpmode, bool dst)
{
unsigned int dmask, amask;
int prevreg = -1, lastreg = -1, first = 1;
if (mode == Apdi && !fpmode) {
uae_u8 dmask2;
uae_u8 amask2;
amask2 = mask & 0xff;
dmask2 = (mask >> 8) & 0xff;
dmask = 0;
amask = 0;
for (int i = 0; i < 8; i++) {
if (dmask2 & (1 << i))
dmask |= 1 << (7 - i);
if (amask2 & (1 << i))
amask |= 1 << (7 - i);
}
} else {
dmask = mask & 0xff;
amask = (mask >> 8) & 0xff;
if (fpmode == 1 && mode != Apdi) {
uae_u8 dmask2 = dmask;
dmask = 0;
for (int i = 0; i < 8; i++) {
if (dmask2 & (1 << i))
dmask |= 1 << (7 - i);
}
}
}
bool dataout = dmask != 0 || amask != 0;
if (dst && dataout)
_tcscat(out, _T(","));
if (fpmode) {
while (dmask) { addmovemreg(out, &prevreg, &lastreg, &first, movem_index1[dmask] + (fpmode == 2 ? 24 : 16), fpmode); dmask = movem_next[dmask]; }
} else {
while (dmask) { addmovemreg (out, &prevreg, &lastreg, &first, movem_index1[dmask], fpmode); dmask = movem_next[dmask]; }
while (amask) { addmovemreg (out, &prevreg, &lastreg, &first, movem_index1[amask] + 8, fpmode); amask = movem_next[amask]; }
}
addmovemreg(out, &prevreg, &lastreg, &first, -1, fpmode);
return dataout;
}
static void disasm_size (TCHAR *instrname, struct instr *dp)
{
int size = dp->size;
if (dp->unsized) {
_tcscat(instrname, _T(" "));
return;
}
int m = dp->mnemo;
if (dp->suse && dp->smode == immi &&
(m == i_MOVE || m == i_ADD || m == i_ADDA || m == i_SUB || m == i_SUBA)) {
_tcscat(instrname, _T("Q"));
if (m == i_MOVE)
size = -1;
}
// EXT.B -> EXTB.L
if (m == i_EXT && dp->size == sz_byte) {
_tcscat(instrname,_T("B"));
size = sz_long;
}
switch (size)
{
case sz_byte:
_tcscat (instrname, _T(".B "));
break;
case sz_word:
_tcscat (instrname, _T(".W "));
break;
case sz_long:
_tcscat (instrname, _T(".L "));
break;
default:
_tcscat (instrname, _T(" "));
break;
}
}
static void asm_add_extensions(uae_u16 *data, int *dcntp, int mode, uae_u32 v, int extcnt, uae_u16 *ext, uaecptr pc, int size)
{
int dcnt = *dcntp;
if (mode < 0)
return;
if (mode == Ad16) {
data[dcnt++] = v;
}
if (mode == PC16) {
data[dcnt++] = v - (pc + 2);
}
if (mode == Ad8r || mode == PC8r) {
for (int i = 0; i < extcnt; i++) {
data[dcnt++] = ext[i];
}
}
if (mode == absw) {
data[dcnt++] = (uae_u16)v;
}
if (mode == absl) {
data[dcnt++] = (uae_u16)(v >> 16);
data[dcnt++] = (uae_u16)v;
}
if ((mode == imm && size == 0) || mode == imm0) {
data[dcnt++] = (uae_u8)v;
}
if ((mode == imm && size == 1) || mode == imm1) {
data[dcnt++] = (uae_u16)v;
}
if ((mode == imm && size == 2) || mode == imm2) {
data[dcnt++] = (uae_u16)(v >> 16);
data[dcnt++] = (uae_u16)v;
}
*dcntp = dcnt;
}
static int asm_isdreg(const TCHAR *s)
{
if (s[0] == 'D' && s[1] >= '0' && s[1] <= '7')
return s[1] - '0';
return -1;
}
static int asm_isareg(const TCHAR *s)
{
if (s[0] == 'A' && s[1] >= '0' && s[1] <= '7')
return s[1] - '0';
if (s[0] == 'S' && s[1] == 'P')
return 7;
return -1;
}
static int asm_ispc(const TCHAR *s)
{
if (s[0] == 'P' && s[1] == 'C')
return 1;
return 0;
}
static uae_u32 asmgetval(const TCHAR *s)
{
TCHAR *endptr;
if (s[0] == '$') {
s++;
}
if (s[0] == '-') {
return _tcstol(s, &endptr, 16);
}
return _tcstoul(s, &endptr, 16);
}
static int asm_parse_mode020(TCHAR *s, uae_u8 *reg, uae_u32 *v, int *extcnt, uae_u16 *ext)
{
return -1;
}
static int asm_parse_mode(TCHAR *s, uae_u8 *reg, uae_u32 *v, int *extcnt, uae_u16 *ext)
{
TCHAR *ss = s;
*reg = -1;
*v = 0;
*ext = 0;
*extcnt = 0;
if (s[0] == 0)
return -1;
// Dn
if (asm_isdreg(s) >= 0 && s[2] == 0) {
*reg = asm_isdreg(s);
return Dreg;
}
// An
if (asm_isareg(s) >= 0 && s[2] == 0) {
*reg = asm_isareg(s);
return Areg;
}
// (An) and (An)+
if (s[0] == '(' && asm_isareg(s + 1) >= 0 && s[3] == ')') {
*reg = asm_isareg(s + 1);
if (s[4] == '+' && s[5] == 0)
return Aipi;
if (s[4] == 0)
return Aind;
return -1;
}
// -(An)
if (s[0] == '-' && s[1] == '(' && asm_isareg(s + 2) >= 0 && s[4] == ')' && s[5] == 0) {
*reg = asm_isareg(s + 2);
return Apdi;
}
// Immediate
if (s[0] == '#') {
if (s[1] == '!') {
*v = _tstol(s + 2);
} else {
*v = asmgetval(s + 1);
}
return imm;
}
// Value
if (s[0] == '!') {
*v = _tstol(s + 1);
} else {
*v = asmgetval(s);
}
int dots = 0;
int fullext = 0;
for (int i = 0; i < _tcslen(s); i++) {
if (s[i] == ',') {
dots++;
} else if (s[i] == '[') {
if (fullext > 0)
fullext = -1;
else
fullext = 1;
} else if (s[i] == ']') {
if (fullext != 1)
fullext = -1;
else
fullext = 2;
fullext++;
}
}
if (fullext < 0 || fullext == 1)
return -1;
if (fullext == 2) {
return asm_parse_mode020(s, reg, v, extcnt, ext);
}
while (*s != 0) {
// d16(An)
if (dots == 0 && s[0] == '(' && asm_isareg(s + 1) >= 0 && s[3] == ')' && s[4] == 0) {
*reg = asm_isareg(s + 1);
return Ad16;
}
// d16(PC)
if (dots == 0 && s[0] == '(' && asm_ispc(s + 1) && s[3] == ')' && s[4] == 0) {
*reg = 2;
return PC16;
}
// (d16,An) / (d16,PC)
if (dots == 1 && s[0] == '(' && !asm_ispc(s + 1) && asm_isareg(s + 1) < 0 && asm_isdreg(s + 1) < 0) {
TCHAR *startptr, *endptr;
if (s[1] == '!') {
startptr = s + 2;