| 1 |
/*
|
| 2 |
* emul_op.cpp - 68k opcodes for ROM patches
|
| 3 |
*
|
| 4 |
* Basilisk II (C) 1997-2004 Christian Bauer
|
| 5 |
*
|
| 6 |
* This program is free software; you can redistribute it and/or modify
|
| 7 |
* it under the terms of the GNU General Public License as published by
|
| 8 |
* the Free Software Foundation; either version 2 of the License, or
|
| 9 |
* (at your option) any later version.
|
| 10 |
*
|
| 11 |
* This program is distributed in the hope that it will be useful,
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 14 |
* GNU General Public License for more details.
|
| 15 |
*
|
| 16 |
* You should have received a copy of the GNU General Public License
|
| 17 |
* along with this program; if not, write to the Free Software
|
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
| 19 |
*/
|
| 20 |
|
| 21 |
#include <string.h>
|
| 22 |
#include <stdio.h>
|
| 23 |
|
| 24 |
#include "sysdeps.h"
|
| 25 |
#include "cpu_emulation.h"
|
| 26 |
#include "main.h"
|
| 27 |
#include "macos_util.h"
|
| 28 |
#include "rom_patches.h"
|
| 29 |
#include "rsrc_patches.h"
|
| 30 |
#include "xpram.h"
|
| 31 |
#include "adb.h"
|
| 32 |
#include "timer.h"
|
| 33 |
#include "clip.h"
|
| 34 |
#include "serial.h"
|
| 35 |
#include "sony.h"
|
| 36 |
#include "disk.h"
|
| 37 |
#include "cdrom.h"
|
| 38 |
#include "scsi.h"
|
| 39 |
#include "video.h"
|
| 40 |
#include "audio.h"
|
| 41 |
#include "ether.h"
|
| 42 |
#include "extfs.h"
|
| 43 |
#include "emul_op.h"
|
| 44 |
|
| 45 |
#ifdef ENABLE_MON
|
| 46 |
#include "mon.h"
|
| 47 |
#endif
|
| 48 |
|
| 49 |
#define DEBUG 0
|
| 50 |
#include "debug.h"
|
| 51 |
|
| 52 |
|
| 53 |
/*
|
| 54 |
* Execute EMUL_OP opcode (called by 68k emulator or Illegal Instruction trap handler)
|
| 55 |
*/
|
| 56 |
|
| 57 |
void EmulOp(uint16 opcode, M68kRegisters *r)
|
| 58 |
{
|
| 59 |
D(bug("EmulOp %04x\n", opcode));
|
| 60 |
switch (opcode) {
|
| 61 |
case M68K_EMUL_BREAK: { // Breakpoint
|
| 62 |
printf("*** Breakpoint\n");
|
| 63 |
printf("d0 %08x d1 %08x d2 %08x d3 %08x\n"
|
| 64 |
"d4 %08x d5 %08x d6 %08x d7 %08x\n"
|
| 65 |
"a0 %08x a1 %08x a2 %08x a3 %08x\n"
|
| 66 |
"a4 %08x a5 %08x a6 %08x a7 %08x\n"
|
| 67 |
"sr %04x\n",
|
| 68 |
r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7],
|
| 69 |
r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7],
|
| 70 |
r->sr);
|
| 71 |
VideoQuitFullScreen();
|
| 72 |
#ifdef ENABLE_MON
|
| 73 |
char *arg[4] = {"mon", "-m", "-r", NULL};
|
| 74 |
mon(3, arg);
|
| 75 |
#endif
|
| 76 |
QuitEmulator();
|
| 77 |
break;
|
| 78 |
}
|
| 79 |
|
| 80 |
case M68K_EMUL_OP_SHUTDOWN: // Quit emulator
|
| 81 |
QuitEmulator();
|
| 82 |
break;
|
| 83 |
|
| 84 |
case M68K_EMUL_OP_RESET: { // MacOS reset
|
| 85 |
D(bug("*** RESET ***\n"));
|
| 86 |
TimerReset();
|
| 87 |
EtherReset();
|
| 88 |
AudioReset();
|
| 89 |
|
| 90 |
// Create BootGlobs at top of memory
|
| 91 |
Mac_memset(RAMBaseMac + RAMSize - 4096, 0, 4096);
|
| 92 |
uint32 boot_globs = RAMBaseMac + RAMSize - 0x1c;
|
| 93 |
WriteMacInt32(boot_globs + 0x00, RAMBaseMac); // First RAM bank
|
| 94 |
WriteMacInt32(boot_globs + 0x04, RAMSize);
|
| 95 |
WriteMacInt32(boot_globs + 0x08, 0xffffffff); // End of bank table
|
| 96 |
WriteMacInt32(boot_globs + 0x0c, 0);
|
| 97 |
|
| 98 |
// Setup registers for boot routine
|
| 99 |
r->d[0] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x18); // AddrMapFlags
|
| 100 |
r->d[1] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x1c); // UnivROMFlags
|
| 101 |
r->d[2] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x10); // HWCfgFlags/IDs
|
| 102 |
if (FPUType)
|
| 103 |
r->d[2] |= 0x10000000; // Set FPU flag if FPU present
|
| 104 |
else
|
| 105 |
r->d[2] &= 0xefffffff; // Clear FPU flag if no FPU present
|
| 106 |
r->a[0] = ROMBaseMac + UniversalInfo + ReadMacInt32(ROMBaseMac + UniversalInfo);// AddrMap
|
| 107 |
r->a[1] = ROMBaseMac + UniversalInfo; // UniversalInfo
|
| 108 |
r->a[6] = boot_globs; // BootGlobs
|
| 109 |
r->a[7] = RAMBaseMac + 0x10000; // Boot stack
|
| 110 |
break;
|
| 111 |
}
|
| 112 |
|
| 113 |
case M68K_EMUL_OP_CLKNOMEM: { // Clock/PRAM operations
|
| 114 |
bool is_read = r->d[1] & 0x80;
|
| 115 |
if ((r->d[1] & 0x78) == 0x38) {
|
| 116 |
// XPRAM
|
| 117 |
uint8 reg = (r->d[1] << 5) & 0xe0 | (r->d[1] >> 10) & 0x1f;
|
| 118 |
if (is_read) {
|
| 119 |
r->d[2] = XPRAM[reg];
|
| 120 |
bool localtalk = !(XPRAM[0xe0] || XPRAM[0xe1]); // LocalTalk enabled?
|
| 121 |
switch (reg) {
|
| 122 |
case 0x08:
|
| 123 |
if (ROMVersion != ROM_VERSION_32)
|
| 124 |
r->d[2] &= 0xf8;
|
| 125 |
break;
|
| 126 |
case 0x8a:
|
| 127 |
r->d[2] |= 0x05; // 32bit mode is always enabled
|
| 128 |
break;
|
| 129 |
case 0xe0: // Disable LocalTalk (use EtherTalk instead)
|
| 130 |
if (localtalk)
|
| 131 |
r->d[2] = 0x00;
|
| 132 |
break;
|
| 133 |
case 0xe1:
|
| 134 |
if (localtalk)
|
| 135 |
r->d[2] = 0xf1;
|
| 136 |
break;
|
| 137 |
case 0xe2:
|
| 138 |
if (localtalk)
|
| 139 |
r->d[2] = 0x00;
|
| 140 |
break;
|
| 141 |
case 0xe3:
|
| 142 |
if (localtalk)
|
| 143 |
r->d[2] = 0x0a;
|
| 144 |
break;
|
| 145 |
}
|
| 146 |
D(bug("Read XPRAM %02x->%02lx\n", reg, r->d[2]));
|
| 147 |
} else {
|
| 148 |
D(bug("Write XPRAM %02x<-%02lx\n", reg, r->d[2] & 0xff));
|
| 149 |
if (reg == 0x8a && !TwentyFourBitAddressing)
|
| 150 |
r->d[2] |= 0x05; // 32bit mode is always enabled if possible
|
| 151 |
XPRAM[reg] = r->d[2];
|
| 152 |
}
|
| 153 |
} else {
|
| 154 |
// PRAM, RTC and other clock registers
|
| 155 |
uint8 reg = (r->d[1] >> 2) & 0x1f;
|
| 156 |
if (reg >= 0x10 || (reg >= 0x08 && reg < 0x0c)) {
|
| 157 |
if (is_read) {
|
| 158 |
r->d[2] = XPRAM[reg];
|
| 159 |
D(bug("Read XPRAM %02x->%02x\n", reg, XPRAM[reg]));
|
| 160 |
} else {
|
| 161 |
D(bug("Write PRAM %02x<-%02lx\n", reg, r->d[2]));
|
| 162 |
XPRAM[reg] = r->d[2];
|
| 163 |
}
|
| 164 |
} else if (reg < 0x08 && is_read) {
|
| 165 |
uint32 t = TimerDateTime();
|
| 166 |
uint8 b = t;
|
| 167 |
switch (reg & 3) {
|
| 168 |
case 1: b = t >> 8; break;
|
| 169 |
case 2: b = t >> 16; break;
|
| 170 |
case 3: b = t >> 24; break;
|
| 171 |
}
|
| 172 |
r->d[2] = b;
|
| 173 |
} else
|
| 174 |
D(bug("RTC %s op %d, d1 %08lx d2 %08lx\n", is_read ? "read" : "write", reg, r->d[1], r->d[2]));
|
| 175 |
}
|
| 176 |
r->d[0] = 0;
|
| 177 |
r->d[1] = r->d[2];
|
| 178 |
break;
|
| 179 |
}
|
| 180 |
|
| 181 |
case M68K_EMUL_OP_READ_XPRAM: // Read from XPRAM (ROM10/11)
|
| 182 |
D(bug("Read XPRAM %02lx\n", r->d[1]));
|
| 183 |
r->d[1] = XPRAM[r->d[1] & 0xff];
|
| 184 |
break;
|
| 185 |
|
| 186 |
case M68K_EMUL_OP_READ_XPRAM2: // Read from XPRAM (ROM15)
|
| 187 |
D(bug("Read XPRAM %02lx\n", r->d[0]));
|
| 188 |
r->d[0] = XPRAM[r->d[0] & 0xff];
|
| 189 |
break;
|
| 190 |
|
| 191 |
case M68K_EMUL_OP_PATCH_BOOT_GLOBS: // Patch BootGlobs at startup
|
| 192 |
D(bug("Patch BootGlobs\n"));
|
| 193 |
WriteMacInt32(r->a[4] - 20, RAMBaseMac + RAMSize); // MemTop
|
| 194 |
WriteMacInt8(r->a[4] - 26, 0); // No MMU
|
| 195 |
WriteMacInt8(r->a[4] - 25, ReadMacInt8(r->a[4] - 25) | 1); // No MMU
|
| 196 |
r->a[6] = RAMBaseMac + RAMSize;
|
| 197 |
break;
|
| 198 |
|
| 199 |
case M68K_EMUL_OP_FIX_BOOTSTACK: // Set boot stack to 3/4 of RAM (7.5)
|
| 200 |
r->a[1] = RAMBaseMac + RAMSize * 3 / 4;
|
| 201 |
D(bug("Fix boot stack %08x\n", r->a[1]));
|
| 202 |
break;
|
| 203 |
|
| 204 |
case M68K_EMUL_OP_FIX_MEMSIZE: { // Set correct logical and physical memory size
|
| 205 |
D(bug("Fix MemSize\n"));
|
| 206 |
uint32 diff = ReadMacInt32(0x1ef8) - ReadMacInt32(0x1ef4); // Difference between logical and physical size
|
| 207 |
WriteMacInt32(0x1ef8, RAMSize); // Physical RAM size
|
| 208 |
WriteMacInt32(0x1ef4, RAMSize - diff); // Logical RAM size
|
| 209 |
break;
|
| 210 |
}
|
| 211 |
|
| 212 |
case M68K_EMUL_OP_ADBOP: // ADBOp() replacement
|
| 213 |
ADBOp(r->d[0], Mac2HostAddr(ReadMacInt32(r->a[0])));
|
| 214 |
break;
|
| 215 |
|
| 216 |
case M68K_EMUL_OP_INSTIME: // InsTime() replacement
|
| 217 |
r->d[0] = InsTime(r->a[0], r->d[1]);
|
| 218 |
break;
|
| 219 |
|
| 220 |
case M68K_EMUL_OP_RMVTIME: // RmvTime() replacement
|
| 221 |
r->d[0] = RmvTime(r->a[0]);
|
| 222 |
break;
|
| 223 |
|
| 224 |
case M68K_EMUL_OP_PRIMETIME: // PrimeTime() replacement
|
| 225 |
r->d[0] = PrimeTime(r->a[0], r->d[0]);
|
| 226 |
break;
|
| 227 |
|
| 228 |
case M68K_EMUL_OP_MICROSECONDS: // Microseconds() replacement
|
| 229 |
Microseconds(r->a[0], r->d[0]);
|
| 230 |
break;
|
| 231 |
|
| 232 |
case M68K_EMUL_OP_INSTALL_DRIVERS: {// Patch to install our own drivers during startup
|
| 233 |
// Install drivers
|
| 234 |
D(bug("InstallDrivers\n"));
|
| 235 |
InstallDrivers(r->a[0]);
|
| 236 |
|
| 237 |
// Install PutScrap() patch
|
| 238 |
M68kRegisters r;
|
| 239 |
r.d[0] = 0xa9fe;
|
| 240 |
r.a[0] = PutScrapPatch;
|
| 241 |
Execute68kTrap(0xa647, &r); // SetToolTrap()
|
| 242 |
|
| 243 |
// Install GetScrap() patch
|
| 244 |
if (GetScrapPatch) {
|
| 245 |
r.d[0] = 0xa9fd;
|
| 246 |
r.a[0] = GetScrapPatch;
|
| 247 |
Execute68kTrap(0xa647, &r); // SetToolTrap()
|
| 248 |
}
|
| 249 |
|
| 250 |
// Setup fake ASC registers
|
| 251 |
if (ROMVersion == ROM_VERSION_32) {
|
| 252 |
r.d[0] = 0x1000;
|
| 253 |
Execute68kTrap(0xa71e, &r); // NewPtrSysClear()
|
| 254 |
uint32 asc_regs = r.a[0];
|
| 255 |
D(bug("ASC registers at %08lx\n", asc_regs));
|
| 256 |
WriteMacInt8(asc_regs + 0x800, 0x0f); // Set ASC version number
|
| 257 |
WriteMacInt32(0xcc0, asc_regs); // Set ASCBase
|
| 258 |
}
|
| 259 |
break;
|
| 260 |
}
|
| 261 |
|
| 262 |
case M68K_EMUL_OP_SERD: // Install serial drivers
|
| 263 |
D(bug("InstallSERD\n"));
|
| 264 |
InstallSERD();
|
| 265 |
break;
|
| 266 |
|
| 267 |
case M68K_EMUL_OP_SONY_OPEN: // Floppy driver functions
|
| 268 |
r->d[0] = SonyOpen(r->a[0], r->a[1]);
|
| 269 |
break;
|
| 270 |
|
| 271 |
case M68K_EMUL_OP_SONY_PRIME:
|
| 272 |
r->d[0] = SonyPrime(r->a[0], r->a[1]);
|
| 273 |
break;
|
| 274 |
|
| 275 |
case M68K_EMUL_OP_SONY_CONTROL:
|
| 276 |
r->d[0] = SonyControl(r->a[0], r->a[1]);
|
| 277 |
break;
|
| 278 |
|
| 279 |
case M68K_EMUL_OP_SONY_STATUS:
|
| 280 |
r->d[0] = SonyStatus(r->a[0], r->a[1]);
|
| 281 |
break;
|
| 282 |
|
| 283 |
case M68K_EMUL_OP_DISK_OPEN: // Disk driver functions
|
| 284 |
r->d[0] = DiskOpen(r->a[0], r->a[1]);
|
| 285 |
break;
|
| 286 |
|
| 287 |
case M68K_EMUL_OP_DISK_PRIME:
|
| 288 |
r->d[0] = DiskPrime(r->a[0], r->a[1]);
|
| 289 |
break;
|
| 290 |
|
| 291 |
case M68K_EMUL_OP_DISK_CONTROL:
|
| 292 |
r->d[0] = DiskControl(r->a[0], r->a[1]);
|
| 293 |
break;
|
| 294 |
|
| 295 |
case M68K_EMUL_OP_DISK_STATUS:
|
| 296 |
r->d[0] = DiskStatus(r->a[0], r->a[1]);
|
| 297 |
break;
|
| 298 |
|
| 299 |
case M68K_EMUL_OP_CDROM_OPEN: // CD-ROM driver functions
|
| 300 |
r->d[0] = CDROMOpen(r->a[0], r->a[1]);
|
| 301 |
break;
|
| 302 |
|
| 303 |
case M68K_EMUL_OP_CDROM_PRIME:
|
| 304 |
r->d[0] = CDROMPrime(r->a[0], r->a[1]);
|
| 305 |
break;
|
| 306 |
|
| 307 |
case M68K_EMUL_OP_CDROM_CONTROL:
|
| 308 |
r->d[0] = CDROMControl(r->a[0], r->a[1]);
|
| 309 |
break;
|
| 310 |
|
| 311 |
case M68K_EMUL_OP_CDROM_STATUS:
|
| 312 |
r->d[0] = CDROMStatus(r->a[0], r->a[1]);
|
| 313 |
break;
|
| 314 |
|
| 315 |
case M68K_EMUL_OP_VIDEO_OPEN: // Video driver functions
|
| 316 |
r->d[0] = VideoDriverOpen(r->a[0], r->a[1]);
|
| 317 |
break;
|
| 318 |
|
| 319 |
case M68K_EMUL_OP_VIDEO_CONTROL:
|
| 320 |
r->d[0] = VideoDriverControl(r->a[0], r->a[1]);
|
| 321 |
break;
|
| 322 |
|
| 323 |
case M68K_EMUL_OP_VIDEO_STATUS:
|
| 324 |
r->d[0] = VideoDriverStatus(r->a[0], r->a[1]);
|
| 325 |
break;
|
| 326 |
|
| 327 |
case M68K_EMUL_OP_SERIAL_OPEN: // Serial driver functions
|
| 328 |
r->d[0] = SerialOpen(r->a[0], r->a[1], r->d[0]);
|
| 329 |
break;
|
| 330 |
|
| 331 |
case M68K_EMUL_OP_SERIAL_PRIME:
|
| 332 |
r->d[0] = SerialPrime(r->a[0], r->a[1], r->d[0]);
|
| 333 |
break;
|
| 334 |
|
| 335 |
case M68K_EMUL_OP_SERIAL_CONTROL:
|
| 336 |
r->d[0] = SerialControl(r->a[0], r->a[1], r->d[0]);
|
| 337 |
break;
|
| 338 |
|
| 339 |
case M68K_EMUL_OP_SERIAL_STATUS:
|
| 340 |
r->d[0] = SerialStatus(r->a[0], r->a[1], r->d[0]);
|
| 341 |
break;
|
| 342 |
|
| 343 |
case M68K_EMUL_OP_SERIAL_CLOSE:
|
| 344 |
r->d[0] = SerialClose(r->a[0], r->a[1], r->d[0]);
|
| 345 |
break;
|
| 346 |
|
| 347 |
case M68K_EMUL_OP_ETHER_OPEN: // Ethernet driver functions
|
| 348 |
r->d[0] = EtherOpen(r->a[0], r->a[1]);
|
| 349 |
break;
|
| 350 |
|
| 351 |
case M68K_EMUL_OP_ETHER_CONTROL:
|
| 352 |
r->d[0] = EtherControl(r->a[0], r->a[1]);
|
| 353 |
break;
|
| 354 |
|
| 355 |
case M68K_EMUL_OP_ETHER_READ_PACKET:
|
| 356 |
EtherReadPacket((uint8 **)&r->a[0], r->a[3], r->d[3], r->d[1]);
|
| 357 |
break;
|
| 358 |
|
| 359 |
case M68K_EMUL_OP_SOUNDIN_OPEN: // Sound input driver functions
|
| 360 |
r->d[0] = SoundInOpen(r->a[0], r->a[1]);
|
| 361 |
break;
|
| 362 |
|
| 363 |
case M68K_EMUL_OP_SOUNDIN_PRIME:
|
| 364 |
r->d[0] = SoundInPrime(r->a[0], r->a[1]);
|
| 365 |
break;
|
| 366 |
|
| 367 |
case M68K_EMUL_OP_SOUNDIN_CONTROL:
|
| 368 |
r->d[0] = SoundInControl(r->a[0], r->a[1]);
|
| 369 |
break;
|
| 370 |
|
| 371 |
case M68K_EMUL_OP_SOUNDIN_STATUS:
|
| 372 |
r->d[0] = SoundInStatus(r->a[0], r->a[1]);
|
| 373 |
break;
|
| 374 |
|
| 375 |
case M68K_EMUL_OP_SOUNDIN_CLOSE:
|
| 376 |
r->d[0] = SoundInClose(r->a[0], r->a[1]);
|
| 377 |
break;
|
| 378 |
|
| 379 |
case M68K_EMUL_OP_SCSI_DISPATCH: { // SCSIDispatch() replacement
|
| 380 |
uint32 ret = ReadMacInt32(r->a[7]); // Get return address
|
| 381 |
uint16 sel = ReadMacInt16(r->a[7] + 4); // Get selector
|
| 382 |
r->a[7] += 6;
|
| 383 |
int stack = 0;
|
| 384 |
switch (sel) {
|
| 385 |
case 0: // SCSIReset
|
| 386 |
WriteMacInt16(r->a[7], SCSIReset());
|
| 387 |
stack = 0;
|
| 388 |
break;
|
| 389 |
case 1: // SCSIGet
|
| 390 |
WriteMacInt16(r->a[7], SCSIGet());
|
| 391 |
stack = 0;
|
| 392 |
break;
|
| 393 |
case 2: // SCSISelect
|
| 394 |
case 11: // SCSISelAtn
|
| 395 |
WriteMacInt16(r->a[7] + 2, SCSISelect(ReadMacInt16(r->a[7]) & 0xff));
|
| 396 |
stack = 2;
|
| 397 |
break;
|
| 398 |
case 3: // SCSICmd
|
| 399 |
WriteMacInt16(r->a[7] + 6, SCSICmd(ReadMacInt16(r->a[7]), Mac2HostAddr(ReadMacInt32(r->a[7] + 2))));
|
| 400 |
stack = 6;
|
| 401 |
break;
|
| 402 |
case 4: // SCSIComplete
|
| 403 |
WriteMacInt16(r->a[7] + 12, SCSIComplete(ReadMacInt32(r->a[7]), ReadMacInt32(r->a[7] + 4), ReadMacInt32(r->a[7] + 8)));
|
| 404 |
stack = 12;
|
| 405 |
break;
|
| 406 |
case 5: // SCSIRead
|
| 407 |
case 8: // SCSIRBlind
|
| 408 |
WriteMacInt16(r->a[7] + 4, SCSIRead(ReadMacInt32(r->a[7])));
|
| 409 |
stack = 4;
|
| 410 |
break;
|
| 411 |
case 6: // SCSIWrite
|
| 412 |
case 9: // SCSIWBlind
|
| 413 |
WriteMacInt16(r->a[7] + 4, SCSIWrite(ReadMacInt32(r->a[7])));
|
| 414 |
stack = 4;
|
| 415 |
break;
|
| 416 |
case 10: // SCSIStat
|
| 417 |
WriteMacInt16(r->a[7], SCSIStat());
|
| 418 |
stack = 0;
|
| 419 |
break;
|
| 420 |
case 12: // SCSIMsgIn
|
| 421 |
WriteMacInt16(r->a[7] + 4, 0);
|
| 422 |
stack = 4;
|
| 423 |
break;
|
| 424 |
case 13: // SCSIMsgOut
|
| 425 |
WriteMacInt16(r->a[7] + 2, 0);
|
| 426 |
stack = 2;
|
| 427 |
break;
|
| 428 |
case 14: // SCSIMgrBusy
|
| 429 |
WriteMacInt16(r->a[7], SCSIMgrBusy());
|
| 430 |
stack = 0;
|
| 431 |
break;
|
| 432 |
default:
|
| 433 |
printf("FATAL: SCSIDispatch(%d): illegal selector\n", sel);
|
| 434 |
QuitEmulator();
|
| 435 |
break;
|
| 436 |
}
|
| 437 |
r->a[0] = ret; // "rtd" emulation, a0 = return address, a1 = new stack pointer
|
| 438 |
r->a[1] = r->a[7] + stack;
|
| 439 |
break;
|
| 440 |
}
|
| 441 |
|
| 442 |
case M68K_EMUL_OP_IRQ: // Level 1 interrupt
|
| 443 |
r->d[0] = 0;
|
| 444 |
|
| 445 |
if (InterruptFlags & INTFLAG_60HZ) {
|
| 446 |
ClearInterruptFlag(INTFLAG_60HZ);
|
| 447 |
|
| 448 |
// Increment Ticks variable
|
| 449 |
WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
|
| 450 |
|
| 451 |
if (HasMacStarted()) {
|
| 452 |
|
| 453 |
// Mac has started, execute all 60Hz interrupt functions
|
| 454 |
TimerInterrupt();
|
| 455 |
VideoInterrupt();
|
| 456 |
|
| 457 |
// Call DoVBLTask(0)
|
| 458 |
if (ROMVersion == ROM_VERSION_32) {
|
| 459 |
M68kRegisters r2;
|
| 460 |
r2.d[0] = 0;
|
| 461 |
Execute68kTrap(0xa072, &r2);
|
| 462 |
}
|
| 463 |
|
| 464 |
r->d[0] = 1; // Flag: 68k interrupt routine executes VBLTasks etc.
|
| 465 |
}
|
| 466 |
}
|
| 467 |
|
| 468 |
if (InterruptFlags & INTFLAG_1HZ) {
|
| 469 |
ClearInterruptFlag(INTFLAG_1HZ);
|
| 470 |
if (HasMacStarted()) {
|
| 471 |
SonyInterrupt();
|
| 472 |
DiskInterrupt();
|
| 473 |
CDROMInterrupt();
|
| 474 |
}
|
| 475 |
}
|
| 476 |
|
| 477 |
if (InterruptFlags & INTFLAG_SERIAL) {
|
| 478 |
ClearInterruptFlag(INTFLAG_SERIAL);
|
| 479 |
SerialInterrupt();
|
| 480 |
}
|
| 481 |
|
| 482 |
if (InterruptFlags & INTFLAG_ETHER) {
|
| 483 |
ClearInterruptFlag(INTFLAG_ETHER);
|
| 484 |
EtherInterrupt();
|
| 485 |
}
|
| 486 |
|
| 487 |
if (InterruptFlags & INTFLAG_AUDIO) {
|
| 488 |
ClearInterruptFlag(INTFLAG_AUDIO);
|
| 489 |
AudioInterrupt();
|
| 490 |
}
|
| 491 |
|
| 492 |
if (InterruptFlags & INTFLAG_ADB) {
|
| 493 |
ClearInterruptFlag(INTFLAG_ADB);
|
| 494 |
if (HasMacStarted())
|
| 495 |
ADBInterrupt();
|
| 496 |
}
|
| 497 |
|
| 498 |
if (InterruptFlags & INTFLAG_NMI) {
|
| 499 |
ClearInterruptFlag(INTFLAG_NMI);
|
| 500 |
if (HasMacStarted())
|
| 501 |
TriggerNMI();
|
| 502 |
}
|
| 503 |
break;
|
| 504 |
|
| 505 |
case M68K_EMUL_OP_PUT_SCRAP: { // PutScrap() patch
|
| 506 |
void *scrap = Mac2HostAddr(ReadMacInt32(r->a[7] + 4));
|
| 507 |
uint32 type = ReadMacInt32(r->a[7] + 8);
|
| 508 |
int32 length = ReadMacInt32(r->a[7] + 12);
|
| 509 |
PutScrap(type, scrap, length);
|
| 510 |
break;
|
| 511 |
}
|
| 512 |
|
| 513 |
case M68K_EMUL_OP_GET_SCRAP: { // GetScrap() patch
|
| 514 |
void **scrap_handle = (void **)Mac2HostAddr(ReadMacInt32(r->a[7] + 4));
|
| 515 |
uint32 type = ReadMacInt32(r->a[7] + 8);
|
| 516 |
int32 length = ReadMacInt32(r->a[7] + 12);
|
| 517 |
GetScrap(scrap_handle, type, length);
|
| 518 |
break;
|
| 519 |
}
|
| 520 |
|
| 521 |
case M68K_EMUL_OP_CHECKLOAD: { // vCheckLoad() patch (resource loader)
|
| 522 |
uint32 type = r->d[1];
|
| 523 |
int16 id = ReadMacInt16(r->a[2]);
|
| 524 |
if (r->a[0] == 0)
|
| 525 |
break;
|
| 526 |
uint32 adr = ReadMacInt32(r->a[0]);
|
| 527 |
if (adr == 0)
|
| 528 |
break;
|
| 529 |
uint8 *p = Mac2HostAddr(adr);
|
| 530 |
uint32 size = ReadMacInt32(adr - 8) & 0xffffff;
|
| 531 |
CheckLoad(type, id, p, size);
|
| 532 |
break;
|
| 533 |
}
|
| 534 |
|
| 535 |
case M68K_EMUL_OP_AUDIO: // Audio component dispatch function
|
| 536 |
r->d[0] = AudioDispatch(r->a[3], r->a[4]);
|
| 537 |
break;
|
| 538 |
|
| 539 |
#if SUPPORTS_EXTFS
|
| 540 |
case M68K_EMUL_OP_EXTFS_COMM: // External file system routines
|
| 541 |
WriteMacInt16(r->a[7] + 14, ExtFSComm(ReadMacInt16(r->a[7] + 12), ReadMacInt32(r->a[7] + 8), ReadMacInt32(r->a[7] + 4)));
|
| 542 |
break;
|
| 543 |
|
| 544 |
case M68K_EMUL_OP_EXTFS_HFS:
|
| 545 |
WriteMacInt16(r->a[7] + 20, ExtFSHFS(ReadMacInt32(r->a[7] + 16), ReadMacInt16(r->a[7] + 14), ReadMacInt32(r->a[7] + 10), ReadMacInt32(r->a[7] + 6), ReadMacInt16(r->a[7] + 4)));
|
| 546 |
break;
|
| 547 |
#endif
|
| 548 |
|
| 549 |
case M68K_EMUL_OP_BLOCK_MOVE: // BlockMove() cache flushing
|
| 550 |
FlushCodeCache(Mac2HostAddr(r->a[0]), r->a[1]);
|
| 551 |
break;
|
| 552 |
|
| 553 |
case M68K_EMUL_OP_DEBUGUTIL:
|
| 554 |
// printf("DebugUtil d0=%08lx a5=%08lx\n", r->d[0], r->a[5]);
|
| 555 |
r->d[0] = DebugUtil(r->d[0]);
|
| 556 |
break;
|
| 557 |
|
| 558 |
default:
|
| 559 |
printf("FATAL: EMUL_OP called with bogus opcode %08x\n", opcode);
|
| 560 |
printf("d0 %08x d1 %08x d2 %08x d3 %08x\n"
|
| 561 |
"d4 %08x d5 %08x d6 %08x d7 %08x\n"
|
| 562 |
"a0 %08x a1 %08x a2 %08x a3 %08x\n"
|
| 563 |
"a4 %08x a5 %08x a6 %08x a7 %08x\n"
|
| 564 |
"sr %04x\n",
|
| 565 |
r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7],
|
| 566 |
r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7],
|
| 567 |
r->sr);
|
| 568 |
#ifdef ENABLE_MON
|
| 569 |
char *arg[4] = {"mon", "-m", "-r", NULL};
|
| 570 |
mon(3, arg);
|
| 571 |
#endif
|
| 572 |
QuitEmulator();
|
| 573 |
break;
|
| 574 |
}
|
| 575 |
}
|