| 1 |
cebix |
1.1 |
/* |
| 2 |
|
|
* main_amiga.cpp - Startup code for AmigaOS |
| 3 |
|
|
* |
| 4 |
|
|
* Basilisk II (C) 1997-1999 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 <exec/types.h> |
| 22 |
|
|
#include <exec/execbase.h> |
| 23 |
|
|
#include <exec/memory.h> |
| 24 |
|
|
#include <exec/tasks.h> |
| 25 |
|
|
#include <dos/dostags.h> |
| 26 |
|
|
#include <intuition/intuition.h> |
| 27 |
|
|
#include <devices/timer.h> |
| 28 |
|
|
#include <devices/ahi.h> |
| 29 |
|
|
#include <proto/exec.h> |
| 30 |
|
|
#include <proto/dos.h> |
| 31 |
|
|
#include <proto/intuition.h> |
| 32 |
|
|
|
| 33 |
|
|
#include "sysdeps.h" |
| 34 |
|
|
#include "cpu_emulation.h" |
| 35 |
|
|
#include "main.h" |
| 36 |
|
|
#include "xpram.h" |
| 37 |
|
|
#include "timer.h" |
| 38 |
|
|
#include "sony.h" |
| 39 |
|
|
#include "disk.h" |
| 40 |
|
|
#include "cdrom.h" |
| 41 |
|
|
#include "scsi.h" |
| 42 |
|
|
#include "audio.h" |
| 43 |
|
|
#include "video.h" |
| 44 |
|
|
#include "serial.h" |
| 45 |
|
|
#include "ether.h" |
| 46 |
|
|
#include "clip.h" |
| 47 |
|
|
#include "emul_op.h" |
| 48 |
|
|
#include "rom_patches.h" |
| 49 |
|
|
#include "prefs.h" |
| 50 |
|
|
#include "prefs_editor.h" |
| 51 |
|
|
#include "sys.h" |
| 52 |
|
|
#include "user_strings.h" |
| 53 |
|
|
#include "version.h" |
| 54 |
|
|
|
| 55 |
|
|
#define DEBUG 0 |
| 56 |
|
|
#include "debug.h" |
| 57 |
|
|
|
| 58 |
|
|
|
| 59 |
cebix |
1.3 |
// Our minimum stack requirement |
| 60 |
|
|
unsigned long __stack = 0x4000; |
| 61 |
|
|
|
| 62 |
|
|
|
| 63 |
cebix |
1.1 |
// Constants |
| 64 |
|
|
static const char ROM_FILE_NAME[] = "ROM"; |
| 65 |
cebix |
1.3 |
static const char __ver[] = "$VER: " VERSION_STRING " " __DATE__; |
| 66 |
cebix |
1.1 |
static const int SCRATCH_MEM_SIZE = 65536; |
| 67 |
|
|
|
| 68 |
|
|
|
| 69 |
|
|
// RAM and ROM pointers |
| 70 |
|
|
uint32 RAMBaseMac; // RAM base (Mac address space) |
| 71 |
|
|
uint8 *RAMBaseHost; // RAM base (host address space) |
| 72 |
|
|
uint32 RAMSize; // Size of RAM |
| 73 |
|
|
uint32 ROMBaseMac; // ROM base (Mac address space) |
| 74 |
|
|
uint8 *ROMBaseHost; // ROM base (host address space) |
| 75 |
|
|
uint32 ROMSize; // Size of ROM |
| 76 |
|
|
|
| 77 |
|
|
|
| 78 |
|
|
// CPU and FPU type, addressing mode |
| 79 |
|
|
int CPUType; |
| 80 |
|
|
bool CPUIs68060; |
| 81 |
|
|
int FPUType; |
| 82 |
|
|
bool TwentyFourBitAddressing; |
| 83 |
|
|
|
| 84 |
|
|
|
| 85 |
|
|
// Global variables |
| 86 |
|
|
extern ExecBase *SysBase; |
| 87 |
cebix |
1.3 |
struct Library *GfxBase = NULL; |
| 88 |
|
|
struct IntuitionBase *IntuitionBase = NULL; |
| 89 |
cebix |
1.1 |
struct Library *GadToolsBase = NULL; |
| 90 |
cebix |
1.3 |
struct Library *IFFParseBase = NULL; |
| 91 |
cebix |
1.1 |
struct Library *AslBase = NULL; |
| 92 |
|
|
struct Library *P96Base = NULL; |
| 93 |
|
|
struct Library *TimerBase = NULL; |
| 94 |
|
|
struct Library *AHIBase = NULL; |
| 95 |
|
|
struct Library *DiskBase = NULL; |
| 96 |
|
|
|
| 97 |
|
|
struct Task *MainTask; // Our task |
| 98 |
|
|
uint32 ScratchMem = NULL; // Scratch memory for Mac ROM writes |
| 99 |
|
|
APTR OldTrapHandler = NULL; // Old trap handler |
| 100 |
|
|
APTR OldExceptionHandler = NULL; // Old exception handler |
| 101 |
|
|
BYTE IRQSig = -1; // "Interrupt" signal number |
| 102 |
|
|
ULONG IRQSigMask = 0; // "Interrupt" signal mask |
| 103 |
|
|
|
| 104 |
|
|
static struct timerequest *timereq = NULL; // IORequest for timer |
| 105 |
|
|
|
| 106 |
|
|
static struct MsgPort *ahi_port = NULL; // Port for AHI |
| 107 |
|
|
static struct AHIRequest *ahi_io = NULL; // IORequest for AHI |
| 108 |
|
|
|
| 109 |
|
|
static struct Process *tick_proc = NULL; // 60Hz process |
| 110 |
|
|
static volatile bool tick_proc_active = true; // Flag for quitting the 60Hz process |
| 111 |
|
|
|
| 112 |
|
|
static bool stack_swapped = false; // Stack swapping |
| 113 |
|
|
static StackSwapStruct stack_swap; |
| 114 |
|
|
|
| 115 |
|
|
|
| 116 |
|
|
// Assembly functions |
| 117 |
|
|
struct trap_regs; |
| 118 |
|
|
extern "C" void AtomicAnd(uint32 *p, uint32 val); |
| 119 |
|
|
extern "C" void AtomicOr(uint32 *p, uint32 val); |
| 120 |
|
|
extern "C" void MoveVBR(void); |
| 121 |
|
|
extern "C" void TrapHandlerAsm(void); |
| 122 |
|
|
extern "C" void ExceptionHandlerAsm(void); |
| 123 |
|
|
extern "C" void IllInstrHandler(trap_regs *regs); |
| 124 |
|
|
extern "C" void PrivViolHandler(trap_regs *regs); |
| 125 |
cebix |
1.3 |
extern "C" void quit_emulator(void); |
| 126 |
cebix |
1.1 |
uint16 EmulatedSR; // Emulated SR (supervisor bit and interrupt mask) |
| 127 |
|
|
|
| 128 |
|
|
|
| 129 |
cebix |
1.3 |
// Prototypes |
| 130 |
|
|
static void jump_to_rom(void); |
| 131 |
|
|
static void tick_func(void); |
| 132 |
|
|
|
| 133 |
|
|
|
| 134 |
cebix |
1.1 |
/* |
| 135 |
|
|
* Main program |
| 136 |
|
|
*/ |
| 137 |
|
|
|
| 138 |
|
|
int main(void) |
| 139 |
|
|
{ |
| 140 |
|
|
// Initialize variables |
| 141 |
|
|
RAMBaseHost = NULL; |
| 142 |
|
|
ROMBaseHost = NULL; |
| 143 |
|
|
MainTask = FindTask(NULL); |
| 144 |
|
|
struct DateStamp ds; |
| 145 |
|
|
DateStamp(&ds); |
| 146 |
|
|
srand(ds.ds_Tick); |
| 147 |
|
|
|
| 148 |
|
|
// Print some info |
| 149 |
|
|
printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR); |
| 150 |
|
|
printf(" %s\n", GetString(STR_ABOUT_TEXT2)); |
| 151 |
|
|
|
| 152 |
|
|
// Open libraries |
| 153 |
cebix |
1.3 |
GfxBase = OpenLibrary((UBYTE *)"graphics.library", 39); |
| 154 |
|
|
if (GfxBase == NULL) { |
| 155 |
|
|
printf("Cannot open graphics.library V39.\n"); |
| 156 |
|
|
exit(1); |
| 157 |
|
|
} |
| 158 |
|
|
IntuitionBase = (struct IntuitionBase *)OpenLibrary((UBYTE *)"intuition.library", 39); |
| 159 |
|
|
if (IntuitionBase == NULL) { |
| 160 |
|
|
printf("Cannot open intuition.library V39.\n"); |
| 161 |
|
|
CloseLibrary(GfxBase); |
| 162 |
|
|
exit(1); |
| 163 |
|
|
} |
| 164 |
cebix |
1.1 |
DiskBase = (struct Library *)OpenResource((UBYTE *)"disk.resource"); |
| 165 |
|
|
if (DiskBase == NULL) |
| 166 |
|
|
QuitEmulator(); |
| 167 |
|
|
GadToolsBase = OpenLibrary((UBYTE *)"gadtools.library", 39); |
| 168 |
|
|
if (GadToolsBase == NULL) { |
| 169 |
|
|
ErrorAlert(GetString(STR_NO_GADTOOLS_LIB_ERR)); |
| 170 |
|
|
QuitEmulator(); |
| 171 |
|
|
} |
| 172 |
cebix |
1.3 |
IFFParseBase = OpenLibrary((UBYTE *)"iffparse.library", 39); |
| 173 |
|
|
if (IFFParseBase == NULL) { |
| 174 |
|
|
ErrorAlert(GetString(STR_NO_IFFPARSE_LIB_ERR)); |
| 175 |
|
|
QuitEmulator(); |
| 176 |
|
|
} |
| 177 |
cebix |
1.1 |
AslBase = OpenLibrary((UBYTE *)"asl.library", 36); |
| 178 |
|
|
if (AslBase == NULL) { |
| 179 |
|
|
ErrorAlert(GetString(STR_NO_ASL_LIB_ERR)); |
| 180 |
|
|
QuitEmulator(); |
| 181 |
|
|
} |
| 182 |
|
|
P96Base = OpenLibrary((UBYTE *)"Picasso96API.library", 2); |
| 183 |
|
|
|
| 184 |
cebix |
1.3 |
// Read preferences |
| 185 |
|
|
PrefsInit(); |
| 186 |
|
|
|
| 187 |
cebix |
1.1 |
// Open AHI |
| 188 |
|
|
ahi_port = CreateMsgPort(); |
| 189 |
|
|
if (ahi_port) { |
| 190 |
|
|
ahi_io = (struct AHIRequest *)CreateIORequest(ahi_port, sizeof(struct AHIRequest)); |
| 191 |
|
|
if (ahi_io) { |
| 192 |
|
|
ahi_io->ahir_Version = 2; |
| 193 |
|
|
if (OpenDevice((UBYTE *)AHINAME, AHI_NO_UNIT, (struct IORequest *)ahi_io, 0) == 0) { |
| 194 |
|
|
AHIBase = (struct Library *)ahi_io->ahir_Std.io_Device; |
| 195 |
|
|
} |
| 196 |
|
|
} |
| 197 |
|
|
} |
| 198 |
|
|
|
| 199 |
|
|
// Init system routines |
| 200 |
|
|
SysInit(); |
| 201 |
|
|
|
| 202 |
|
|
// Show preferences editor |
| 203 |
|
|
if (!PrefsFindBool("nogui")) |
| 204 |
|
|
if (!PrefsEditor()) |
| 205 |
|
|
QuitEmulator(); |
| 206 |
|
|
|
| 207 |
|
|
// Check start of Chip memory (because we need access to 0x0000..0x2000) |
| 208 |
|
|
if ((uint32)FindName(&SysBase->MemList, (UBYTE *)"chip memory") < 0x2000) { |
| 209 |
|
|
ErrorAlert(GetString(STR_NO_PREPARE_EMUL_ERR)); |
| 210 |
|
|
QuitEmulator(); |
| 211 |
|
|
} |
| 212 |
|
|
|
| 213 |
|
|
// Open timer.device |
| 214 |
|
|
timereq = (struct timerequest *)AllocVec(sizeof(timerequest), MEMF_PUBLIC | MEMF_CLEAR); |
| 215 |
|
|
if (timereq == NULL) { |
| 216 |
|
|
ErrorAlert(GetString(STR_NO_MEM_ERR)); |
| 217 |
|
|
QuitEmulator(); |
| 218 |
|
|
} |
| 219 |
|
|
if (OpenDevice((UBYTE *)TIMERNAME, UNIT_MICROHZ, (struct IORequest *)timereq, 0)) { |
| 220 |
|
|
ErrorAlert(GetString(STR_NO_TIMER_DEV_ERR)); |
| 221 |
|
|
QuitEmulator(); |
| 222 |
|
|
} |
| 223 |
|
|
TimerBase = (struct Library *)timereq->tr_node.io_Device; |
| 224 |
|
|
|
| 225 |
|
|
// Allocate scratch memory |
| 226 |
|
|
ScratchMem = (uint32)AllocMem(SCRATCH_MEM_SIZE, MEMF_PUBLIC); |
| 227 |
|
|
if (ScratchMem == NULL) { |
| 228 |
|
|
ErrorAlert(GetString(STR_NO_MEM_ERR)); |
| 229 |
|
|
QuitEmulator(); |
| 230 |
|
|
} |
| 231 |
|
|
ScratchMem += SCRATCH_MEM_SIZE/2; // ScratchMem points to middle of block |
| 232 |
|
|
|
| 233 |
|
|
// Create area for Mac RAM and ROM (ROM must be higher in memory, |
| 234 |
|
|
// so we allocate one big chunk and put the ROM at the top of it) |
| 235 |
|
|
RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary |
| 236 |
|
|
if (RAMSize < 1024*1024) { |
| 237 |
|
|
WarningAlert(GetString(STR_SMALL_RAM_WARN)); |
| 238 |
|
|
RAMSize = 1024*1024; |
| 239 |
|
|
} |
| 240 |
|
|
RAMBaseHost = (uint8 *)AllocMem(RAMSize + 0x100000, MEMF_PUBLIC); |
| 241 |
|
|
if (RAMBaseHost == NULL) { |
| 242 |
|
|
ErrorAlert(GetString(STR_NO_MEM_ERR)); |
| 243 |
|
|
QuitEmulator(); |
| 244 |
|
|
} |
| 245 |
|
|
RAMBaseMac = (uint32)RAMBaseHost; |
| 246 |
|
|
D(bug("Mac RAM starts at %08lx\n", RAMBaseHost)); |
| 247 |
|
|
ROMBaseHost = RAMBaseHost + RAMSize; |
| 248 |
|
|
ROMBaseMac = (uint32)ROMBaseHost; |
| 249 |
|
|
D(bug("Mac ROM starts at %08lx\n", ROMBaseHost)); |
| 250 |
|
|
|
| 251 |
|
|
// Get rom file path from preferences |
| 252 |
|
|
const char *rom_path = PrefsFindString("rom"); |
| 253 |
|
|
|
| 254 |
|
|
// Load Mac ROM |
| 255 |
cebix |
1.3 |
BPTR rom_fh = Open(rom_path ? (char *)rom_path : (char *)ROM_FILE_NAME, MODE_OLDFILE); |
| 256 |
cebix |
1.1 |
if (rom_fh == NULL) { |
| 257 |
|
|
ErrorAlert(GetString(STR_NO_ROM_FILE_ERR)); |
| 258 |
|
|
QuitEmulator(); |
| 259 |
|
|
} |
| 260 |
|
|
printf(GetString(STR_READING_ROM_FILE)); |
| 261 |
|
|
Seek(rom_fh, 0, OFFSET_END); |
| 262 |
|
|
ROMSize = Seek(rom_fh, 0, OFFSET_CURRENT); |
| 263 |
|
|
if (ROMSize != 512*1024 && ROMSize != 1024*1024) { |
| 264 |
|
|
ErrorAlert(GetString(STR_ROM_SIZE_ERR)); |
| 265 |
|
|
Close(rom_fh); |
| 266 |
|
|
QuitEmulator(); |
| 267 |
|
|
} |
| 268 |
|
|
Seek(rom_fh, 0, OFFSET_BEGINNING); |
| 269 |
|
|
if (Read(rom_fh, ROMBaseHost, ROMSize) != ROMSize) { |
| 270 |
|
|
ErrorAlert(GetString(STR_ROM_FILE_READ_ERR)); |
| 271 |
|
|
Close(rom_fh); |
| 272 |
|
|
QuitEmulator(); |
| 273 |
|
|
} |
| 274 |
|
|
|
| 275 |
|
|
// Set CPU and FPU type |
| 276 |
|
|
UWORD attn = SysBase->AttnFlags; |
| 277 |
|
|
CPUType = attn & AFF_68040 ? 4 : (attn & AFF_68030 ? 3 : 2); |
| 278 |
|
|
CPUIs68060 = attn & AFF_68060; |
| 279 |
|
|
FPUType = attn & AFF_68881 ? 1 : 0; |
| 280 |
|
|
|
| 281 |
cebix |
1.2 |
// Initialize everything |
| 282 |
|
|
if (!InitAll()) |
| 283 |
cebix |
1.1 |
QuitEmulator(); |
| 284 |
|
|
|
| 285 |
|
|
// Move VBR away from 0 if neccessary |
| 286 |
|
|
MoveVBR(); |
| 287 |
|
|
|
| 288 |
|
|
// Install trap handler |
| 289 |
|
|
EmulatedSR = 0x2700; |
| 290 |
|
|
OldTrapHandler = MainTask->tc_TrapCode; |
| 291 |
|
|
MainTask->tc_TrapCode = (APTR)TrapHandlerAsm; |
| 292 |
|
|
|
| 293 |
|
|
// Allocate signal for interrupt emulation and install exception handler |
| 294 |
|
|
IRQSig = AllocSignal(-1); |
| 295 |
|
|
IRQSigMask = 1 << IRQSig; |
| 296 |
|
|
OldExceptionHandler = MainTask->tc_ExceptCode; |
| 297 |
|
|
MainTask->tc_ExceptCode = (APTR)ExceptionHandlerAsm; |
| 298 |
|
|
SetExcept(SIGBREAKF_CTRL_C | IRQSigMask, SIGBREAKF_CTRL_C | IRQSigMask); |
| 299 |
|
|
|
| 300 |
|
|
// Start 60Hz process |
| 301 |
|
|
tick_proc = CreateNewProcTags( |
| 302 |
cebix |
1.3 |
NP_Entry, (ULONG)tick_func, |
| 303 |
|
|
NP_Name, (ULONG)"Basilisk II 60Hz", |
| 304 |
cebix |
1.1 |
NP_Priority, 5, |
| 305 |
|
|
TAG_END |
| 306 |
|
|
); |
| 307 |
|
|
|
| 308 |
|
|
// Set task priority to -1 so we don't use all processing time |
| 309 |
|
|
SetTaskPri(MainTask, -1); |
| 310 |
|
|
|
| 311 |
|
|
// Swap stack to Mac RAM area |
| 312 |
|
|
stack_swap.stk_Lower = RAMBaseHost; |
| 313 |
|
|
stack_swap.stk_Upper = (ULONG)RAMBaseHost + RAMSize; |
| 314 |
|
|
stack_swap.stk_Pointer = RAMBaseHost + 0x8000; |
| 315 |
|
|
StackSwap(&stack_swap); |
| 316 |
|
|
stack_swapped = true; |
| 317 |
|
|
|
| 318 |
|
|
// Jump to ROM boot routine |
| 319 |
|
|
Start680x0(); |
| 320 |
|
|
|
| 321 |
|
|
QuitEmulator(); |
| 322 |
|
|
return 0; |
| 323 |
|
|
} |
| 324 |
|
|
|
| 325 |
|
|
void Start680x0(void) |
| 326 |
|
|
{ |
| 327 |
|
|
typedef void (*rom_func)(void); |
| 328 |
|
|
rom_func fp = (rom_func)(ROMBaseHost + 0x2a); |
| 329 |
|
|
fp(); |
| 330 |
|
|
} |
| 331 |
|
|
|
| 332 |
|
|
|
| 333 |
|
|
/* |
| 334 |
|
|
* Quit emulator (__saveds because it might be called from an exception) |
| 335 |
|
|
*/ |
| 336 |
|
|
|
| 337 |
cebix |
1.3 |
// Assembly entry point |
| 338 |
|
|
void __saveds quit_emulator(void) |
| 339 |
|
|
{ |
| 340 |
|
|
QuitEmulator(); |
| 341 |
|
|
} |
| 342 |
|
|
|
| 343 |
|
|
void QuitEmulator(void) |
| 344 |
cebix |
1.1 |
{ |
| 345 |
|
|
// Restore stack |
| 346 |
|
|
if (stack_swapped) { |
| 347 |
|
|
stack_swapped = false; |
| 348 |
|
|
StackSwap(&stack_swap); |
| 349 |
|
|
} |
| 350 |
|
|
|
| 351 |
|
|
// Remove exception handler |
| 352 |
|
|
if (IRQSig >= 0) { |
| 353 |
|
|
SetExcept(0, SIGBREAKF_CTRL_C | IRQSigMask); |
| 354 |
|
|
MainTask->tc_ExceptCode = OldExceptionHandler; |
| 355 |
|
|
FreeSignal(IRQSig); |
| 356 |
|
|
} |
| 357 |
|
|
|
| 358 |
|
|
// Stop 60Hz thread |
| 359 |
|
|
if (tick_proc) { |
| 360 |
|
|
SetSignal(0, SIGF_SINGLE); |
| 361 |
|
|
tick_proc_active = false; |
| 362 |
|
|
Wait(SIGF_SINGLE); |
| 363 |
|
|
} |
| 364 |
|
|
|
| 365 |
|
|
// Remove trap handler |
| 366 |
|
|
MainTask->tc_TrapCode = OldTrapHandler; |
| 367 |
|
|
|
| 368 |
cebix |
1.2 |
// Deinitialize everything |
| 369 |
|
|
ExitAll(); |
| 370 |
cebix |
1.1 |
|
| 371 |
|
|
// Delete RAM/ROM area |
| 372 |
|
|
if (RAMBaseHost) |
| 373 |
|
|
FreeMem(RAMBaseHost, RAMSize + 0x100000); |
| 374 |
|
|
|
| 375 |
|
|
// Delete scratch memory area |
| 376 |
|
|
if (ScratchMem) |
| 377 |
|
|
FreeMem((void *)(ScratchMem - SCRATCH_MEM_SIZE/2), SCRATCH_MEM_SIZE); |
| 378 |
|
|
|
| 379 |
|
|
// Close timer.device |
| 380 |
|
|
if (TimerBase) |
| 381 |
|
|
CloseDevice((struct IORequest *)timereq); |
| 382 |
|
|
if (timereq) |
| 383 |
|
|
FreeVec(timereq); |
| 384 |
|
|
|
| 385 |
|
|
// Exit system routines |
| 386 |
|
|
SysExit(); |
| 387 |
|
|
|
| 388 |
|
|
// Close AHI |
| 389 |
|
|
if (AHIBase) |
| 390 |
|
|
CloseDevice((struct IORequest *)ahi_io); |
| 391 |
|
|
if (ahi_io) |
| 392 |
|
|
DeleteIORequest((struct IORequest *)ahi_io); |
| 393 |
|
|
if (ahi_port) |
| 394 |
|
|
DeleteMsgPort(ahi_port); |
| 395 |
|
|
|
| 396 |
|
|
// Exit preferences |
| 397 |
|
|
PrefsExit(); |
| 398 |
|
|
|
| 399 |
|
|
// Close libraries |
| 400 |
|
|
if (P96Base) |
| 401 |
|
|
CloseLibrary(P96Base); |
| 402 |
|
|
if (AslBase) |
| 403 |
|
|
CloseLibrary(AslBase); |
| 404 |
cebix |
1.3 |
if (IFFParseBase) |
| 405 |
|
|
CloseLibrary(IFFParseBase); |
| 406 |
cebix |
1.1 |
if (GadToolsBase) |
| 407 |
|
|
CloseLibrary(GadToolsBase); |
| 408 |
cebix |
1.3 |
if (IntuitionBase) |
| 409 |
|
|
CloseLibrary((struct Library *)IntuitionBase); |
| 410 |
|
|
if (GfxBase) |
| 411 |
|
|
CloseLibrary(GfxBase); |
| 412 |
cebix |
1.1 |
|
| 413 |
|
|
exit(0); |
| 414 |
|
|
} |
| 415 |
|
|
|
| 416 |
|
|
|
| 417 |
|
|
/* |
| 418 |
|
|
* Code was patched, flush caches if neccessary (i.e. when using a real 680x0 |
| 419 |
|
|
* or a dynamically recompiling emulator) |
| 420 |
|
|
*/ |
| 421 |
|
|
|
| 422 |
|
|
void FlushCodeCache(void *start, uint32 size) |
| 423 |
|
|
{ |
| 424 |
|
|
CacheClearE(start, size, CACRF_ClearI | CACRF_ClearD); |
| 425 |
|
|
} |
| 426 |
|
|
|
| 427 |
|
|
|
| 428 |
|
|
/* |
| 429 |
|
|
* Interrupt flags (must be handled atomically!) |
| 430 |
|
|
*/ |
| 431 |
|
|
|
| 432 |
|
|
uint32 InterruptFlags; |
| 433 |
|
|
|
| 434 |
|
|
void SetInterruptFlag(uint32 flag) |
| 435 |
|
|
{ |
| 436 |
|
|
AtomicOr(&InterruptFlags, flag); |
| 437 |
|
|
} |
| 438 |
|
|
|
| 439 |
|
|
void ClearInterruptFlag(uint32 flag) |
| 440 |
|
|
{ |
| 441 |
|
|
AtomicAnd(&InterruptFlags, ~flag); |
| 442 |
|
|
} |
| 443 |
|
|
|
| 444 |
|
|
void TriggerInterrupt(void) |
| 445 |
|
|
{ |
| 446 |
|
|
Signal(MainTask, IRQSigMask); |
| 447 |
|
|
} |
| 448 |
|
|
|
| 449 |
|
|
|
| 450 |
|
|
/* |
| 451 |
|
|
* 60Hz thread |
| 452 |
|
|
*/ |
| 453 |
|
|
|
| 454 |
|
|
static __saveds void tick_func(void) |
| 455 |
|
|
{ |
| 456 |
|
|
int tick_counter = 0; |
| 457 |
|
|
struct MsgPort *timer_port = NULL; |
| 458 |
|
|
struct timerequest *timer_io = NULL; |
| 459 |
|
|
ULONG timer_mask = 0; |
| 460 |
|
|
|
| 461 |
|
|
// Start 60Hz timer |
| 462 |
|
|
timer_port = CreateMsgPort(); |
| 463 |
|
|
if (timer_port) { |
| 464 |
|
|
timer_io = (struct timerequest *)CreateIORequest(timer_port, sizeof(struct timerequest)); |
| 465 |
|
|
if (timer_io) { |
| 466 |
|
|
if (!OpenDevice((UBYTE *)TIMERNAME, UNIT_MICROHZ, (struct IORequest *)timer_io, 0)) { |
| 467 |
|
|
timer_mask = 1 << timer_port->mp_SigBit; |
| 468 |
|
|
timer_io->tr_node.io_Command = TR_ADDREQUEST; |
| 469 |
|
|
timer_io->tr_time.tv_secs = 0; |
| 470 |
|
|
timer_io->tr_time.tv_micro = 16625; |
| 471 |
|
|
SendIO((struct IORequest *)timer_io); |
| 472 |
|
|
} |
| 473 |
|
|
} |
| 474 |
|
|
} |
| 475 |
|
|
|
| 476 |
|
|
while (tick_proc_active) { |
| 477 |
|
|
|
| 478 |
|
|
// Wait for timer tick |
| 479 |
|
|
Wait(timer_mask); |
| 480 |
|
|
|
| 481 |
|
|
// Restart timer |
| 482 |
|
|
timer_io->tr_node.io_Command = TR_ADDREQUEST; |
| 483 |
|
|
timer_io->tr_time.tv_secs = 0; |
| 484 |
|
|
timer_io->tr_time.tv_micro = 16625; |
| 485 |
|
|
SendIO((struct IORequest *)timer_io); |
| 486 |
|
|
|
| 487 |
|
|
// Pseudo Mac 1Hz interrupt, update local time |
| 488 |
|
|
if (++tick_counter > 60) { |
| 489 |
|
|
tick_counter = 0; |
| 490 |
|
|
WriteMacInt32(0x20c, TimerDateTime()); |
| 491 |
|
|
} |
| 492 |
|
|
|
| 493 |
|
|
// Trigger 60Hz interrupt |
| 494 |
|
|
SetInterruptFlag(INTFLAG_60HZ); |
| 495 |
|
|
TriggerInterrupt(); |
| 496 |
|
|
} |
| 497 |
|
|
|
| 498 |
|
|
// Stop timer |
| 499 |
|
|
if (timer_io) { |
| 500 |
|
|
if (!CheckIO((struct IORequest *)timer_io)) |
| 501 |
|
|
AbortIO((struct IORequest *)timer_io); |
| 502 |
|
|
WaitIO((struct IORequest *)timer_io); |
| 503 |
|
|
CloseDevice((struct IORequest *)timer_io); |
| 504 |
|
|
DeleteIORequest(timer_io); |
| 505 |
|
|
} |
| 506 |
|
|
if (timer_port) |
| 507 |
|
|
DeleteMsgPort(timer_port); |
| 508 |
|
|
|
| 509 |
|
|
// Main task asked for termination, send signal |
| 510 |
|
|
Forbid(); |
| 511 |
|
|
Signal(MainTask, SIGF_SINGLE); |
| 512 |
|
|
} |
| 513 |
|
|
|
| 514 |
|
|
|
| 515 |
|
|
/* |
| 516 |
|
|
* Display error alert |
| 517 |
|
|
*/ |
| 518 |
|
|
|
| 519 |
|
|
void ErrorAlert(const char *text) |
| 520 |
|
|
{ |
| 521 |
|
|
if (PrefsFindBool("nogui")) { |
| 522 |
|
|
printf(GetString(STR_SHELL_ERROR_PREFIX), text); |
| 523 |
|
|
return; |
| 524 |
|
|
} |
| 525 |
|
|
EasyStruct req; |
| 526 |
|
|
req.es_StructSize = sizeof(EasyStruct); |
| 527 |
|
|
req.es_Flags = 0; |
| 528 |
|
|
req.es_Title = (UBYTE *)GetString(STR_ERROR_ALERT_TITLE); |
| 529 |
|
|
req.es_TextFormat = (UBYTE *)GetString(STR_GUI_ERROR_PREFIX); |
| 530 |
|
|
req.es_GadgetFormat = (UBYTE *)GetString(STR_QUIT_BUTTON); |
| 531 |
cebix |
1.3 |
EasyRequest(NULL, &req, NULL, (ULONG)text); |
| 532 |
cebix |
1.1 |
} |
| 533 |
|
|
|
| 534 |
|
|
|
| 535 |
|
|
/* |
| 536 |
|
|
* Display warning alert |
| 537 |
|
|
*/ |
| 538 |
|
|
|
| 539 |
|
|
void WarningAlert(const char *text) |
| 540 |
|
|
{ |
| 541 |
|
|
if (PrefsFindBool("nogui")) { |
| 542 |
|
|
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
| 543 |
|
|
return; |
| 544 |
|
|
} |
| 545 |
|
|
EasyStruct req; |
| 546 |
|
|
req.es_StructSize = sizeof(EasyStruct); |
| 547 |
|
|
req.es_Flags = 0; |
| 548 |
|
|
req.es_Title = (UBYTE *)GetString(STR_WARNING_ALERT_TITLE); |
| 549 |
|
|
req.es_TextFormat = (UBYTE *)GetString(STR_GUI_WARNING_PREFIX); |
| 550 |
|
|
req.es_GadgetFormat = (UBYTE *)GetString(STR_OK_BUTTON); |
| 551 |
cebix |
1.3 |
EasyRequest(NULL, &req, NULL, (ULONG)text); |
| 552 |
cebix |
1.1 |
} |
| 553 |
|
|
|
| 554 |
|
|
|
| 555 |
|
|
/* |
| 556 |
|
|
* Display choice alert |
| 557 |
|
|
*/ |
| 558 |
|
|
|
| 559 |
|
|
bool ChoiceAlert(const char *text, const char *pos, const char *neg) |
| 560 |
|
|
{ |
| 561 |
|
|
char str[256]; |
| 562 |
|
|
sprintf(str, "%s|%s", pos, neg); |
| 563 |
|
|
EasyStruct req; |
| 564 |
|
|
req.es_StructSize = sizeof(EasyStruct); |
| 565 |
|
|
req.es_Flags = 0; |
| 566 |
|
|
req.es_Title = (UBYTE *)GetString(STR_WARNING_ALERT_TITLE); |
| 567 |
|
|
req.es_TextFormat = (UBYTE *)GetString(STR_GUI_WARNING_PREFIX); |
| 568 |
|
|
req.es_GadgetFormat = (UBYTE *)str; |
| 569 |
cebix |
1.3 |
return EasyRequest(NULL, &req, NULL, (ULONG)text); |
| 570 |
cebix |
1.1 |
} |
| 571 |
|
|
|
| 572 |
|
|
|
| 573 |
|
|
/* |
| 574 |
|
|
* Illegal Instruction and Privilege Violation trap handlers |
| 575 |
|
|
*/ |
| 576 |
|
|
|
| 577 |
|
|
struct trap_regs { // This must match the layout of M68kRegisters |
| 578 |
|
|
uint32 d[8]; |
| 579 |
|
|
uint32 a[8]; |
| 580 |
|
|
uint16 sr; |
| 581 |
|
|
uint32 pc; |
| 582 |
|
|
}; |
| 583 |
|
|
|
| 584 |
|
|
void __saveds IllInstrHandler(trap_regs *r) |
| 585 |
|
|
{ |
| 586 |
|
|
uint16 opcode = *(uint16 *)(r->pc); |
| 587 |
|
|
if ((opcode & 0xff00) != 0x7100) { |
| 588 |
|
|
printf("Illegal Instruction %04x at %08lx\n", *(uint16 *)(r->pc), r->pc); |
| 589 |
|
|
printf("d0 %08lx d1 %08lx d2 %08lx d3 %08lx\n" |
| 590 |
|
|
"d4 %08lx d5 %08lx d6 %08lx d7 %08lx\n" |
| 591 |
|
|
"a0 %08lx a1 %08lx a2 %08lx a3 %08lx\n" |
| 592 |
|
|
"a4 %08lx a5 %08lx a6 %08lx a7 %08lx\n" |
| 593 |
|
|
"sr %04x\n", |
| 594 |
|
|
r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7], |
| 595 |
|
|
r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7], |
| 596 |
|
|
r->sr); |
| 597 |
|
|
QuitEmulator(); |
| 598 |
|
|
} else { |
| 599 |
|
|
// Disable interrupts |
| 600 |
|
|
uint16 sr = EmulatedSR; |
| 601 |
|
|
EmulatedSR |= 0x0700; |
| 602 |
|
|
|
| 603 |
|
|
// Call opcode routine |
| 604 |
|
|
EmulOp(*(uint16 *)(r->pc), (M68kRegisters *)r); |
| 605 |
|
|
r->pc += 2; |
| 606 |
|
|
|
| 607 |
|
|
// Restore interrupts |
| 608 |
|
|
EmulatedSR = sr; |
| 609 |
|
|
if ((EmulatedSR & 0x0700) == 0 && InterruptFlags) |
| 610 |
|
|
Signal(MainTask, IRQSigMask); |
| 611 |
|
|
} |
| 612 |
|
|
} |
| 613 |
|
|
|
| 614 |
|
|
void __saveds PrivViolHandler(trap_regs *r) |
| 615 |
|
|
{ |
| 616 |
|
|
printf("Privileged instruction %04x %04x at %08lx\n", *(uint16 *)(r->pc), *(uint16 *)(r->pc + 2), r->pc); |
| 617 |
|
|
printf("d0 %08lx d1 %08lx d2 %08lx d3 %08lx\n" |
| 618 |
|
|
"d4 %08lx d5 %08lx d6 %08lx d7 %08lx\n" |
| 619 |
|
|
"a0 %08lx a1 %08lx a2 %08lx a3 %08lx\n" |
| 620 |
|
|
"a4 %08lx a5 %08lx a6 %08lx a7 %08lx\n" |
| 621 |
|
|
"sr %04x\n", |
| 622 |
|
|
r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7], |
| 623 |
|
|
r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7], |
| 624 |
|
|
r->sr); |
| 625 |
|
|
QuitEmulator(); |
| 626 |
|
|
} |
