1 |
cebix |
1.1 |
/* |
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* main_amiga.cpp - Startup code for AmigaOS |
3 |
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* |
4 |
cebix |
1.21 |
* Basilisk II (C) 1997-2002 Christian Bauer |
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cebix |
1.1 |
* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#include <exec/types.h> |
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#include <exec/execbase.h> |
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#include <exec/memory.h> |
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#include <exec/tasks.h> |
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#include <dos/dostags.h> |
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#include <intuition/intuition.h> |
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#include <devices/timer.h> |
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#include <devices/ahi.h> |
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#include <proto/exec.h> |
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#include <proto/dos.h> |
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#include <proto/intuition.h> |
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#include "sysdeps.h" |
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#include "cpu_emulation.h" |
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#include "main.h" |
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#include "xpram.h" |
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#include "timer.h" |
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#include "sony.h" |
39 |
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#include "disk.h" |
40 |
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#include "cdrom.h" |
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#include "scsi.h" |
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#include "audio.h" |
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#include "video.h" |
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#include "serial.h" |
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#include "ether.h" |
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#include "clip.h" |
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#include "emul_op.h" |
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#include "rom_patches.h" |
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#include "prefs.h" |
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#include "prefs_editor.h" |
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#include "sys.h" |
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#include "user_strings.h" |
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#include "version.h" |
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#define DEBUG 0 |
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#include "debug.h" |
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59 |
cebix |
1.4 |
// Options for libnix |
60 |
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unsigned long __stack = 0x4000; // Stack requirement |
61 |
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int __nocommandline = 1; // Disable command line parsing |
62 |
cebix |
1.3 |
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63 |
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64 |
cebix |
1.1 |
// Constants |
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static const char ROM_FILE_NAME[] = "ROM"; |
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cebix |
1.3 |
static const char __ver[] = "$VER: " VERSION_STRING " " __DATE__; |
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cebix |
1.1 |
static const int SCRATCH_MEM_SIZE = 65536; |
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// RAM and ROM pointers |
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uint32 RAMBaseMac; // RAM base (Mac address space) |
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uint8 *RAMBaseHost; // RAM base (host address space) |
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uint32 RAMSize; // Size of RAM |
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uint32 ROMBaseMac; // ROM base (Mac address space) |
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uint8 *ROMBaseHost; // ROM base (host address space) |
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uint32 ROMSize; // Size of ROM |
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// CPU and FPU type, addressing mode |
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int CPUType; |
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bool CPUIs68060; |
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int FPUType; |
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bool TwentyFourBitAddressing; |
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// Global variables |
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extern ExecBase *SysBase; |
88 |
cebix |
1.3 |
struct Library *GfxBase = NULL; |
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struct IntuitionBase *IntuitionBase = NULL; |
90 |
cebix |
1.1 |
struct Library *GadToolsBase = NULL; |
91 |
cebix |
1.3 |
struct Library *IFFParseBase = NULL; |
92 |
cebix |
1.1 |
struct Library *AslBase = NULL; |
93 |
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struct Library *P96Base = NULL; |
94 |
cebix |
1.6 |
struct Library *CyberGfxBase = NULL; |
95 |
cebix |
1.1 |
struct Library *TimerBase = NULL; |
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struct Library *AHIBase = NULL; |
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struct Library *DiskBase = NULL; |
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struct Task *MainTask; // Our task |
100 |
gbeauche |
1.11 |
uint8 *ScratchMem = NULL; // Scratch memory for Mac ROM writes |
101 |
cebix |
1.1 |
APTR OldTrapHandler = NULL; // Old trap handler |
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APTR OldExceptionHandler = NULL; // Old exception handler |
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BYTE IRQSig = -1; // "Interrupt" signal number |
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ULONG IRQSigMask = 0; // "Interrupt" signal mask |
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static struct timerequest *timereq = NULL; // IORequest for timer |
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static struct MsgPort *ahi_port = NULL; // Port for AHI |
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static struct AHIRequest *ahi_io = NULL; // IORequest for AHI |
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cebix |
1.14 |
static struct Process *xpram_proc = NULL; // XPRAM watchdog |
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static volatile bool xpram_proc_active = true; // Flag for quitting the XPRAM watchdog |
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114 |
cebix |
1.1 |
static struct Process *tick_proc = NULL; // 60Hz process |
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static volatile bool tick_proc_active = true; // Flag for quitting the 60Hz process |
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static bool stack_swapped = false; // Stack swapping |
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static StackSwapStruct stack_swap; |
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// Assembly functions |
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struct trap_regs; |
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extern "C" void AtomicAnd(uint32 *p, uint32 val); |
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extern "C" void AtomicOr(uint32 *p, uint32 val); |
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extern "C" void MoveVBR(void); |
126 |
cebix |
1.14 |
extern "C" void DisableSuperBypass(void); |
127 |
cebix |
1.1 |
extern "C" void TrapHandlerAsm(void); |
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extern "C" void ExceptionHandlerAsm(void); |
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extern "C" void IllInstrHandler(trap_regs *regs); |
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extern "C" void PrivViolHandler(trap_regs *regs); |
131 |
cebix |
1.3 |
extern "C" void quit_emulator(void); |
132 |
cebix |
1.12 |
extern "C" void AsmTriggerNMI(void); |
133 |
cebix |
1.1 |
uint16 EmulatedSR; // Emulated SR (supervisor bit and interrupt mask) |
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136 |
cebix |
1.3 |
// Prototypes |
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static void jump_to_rom(void); |
138 |
cebix |
1.14 |
static void xpram_func(void); |
139 |
cebix |
1.3 |
static void tick_func(void); |
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142 |
cebix |
1.1 |
/* |
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* Main program |
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*/ |
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146 |
cebix |
1.13 |
int main(int argc, char **argv) |
147 |
cebix |
1.1 |
{ |
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// Initialize variables |
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RAMBaseHost = NULL; |
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ROMBaseHost = NULL; |
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MainTask = FindTask(NULL); |
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struct DateStamp ds; |
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DateStamp(&ds); |
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srand(ds.ds_Tick); |
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// Print some info |
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printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR); |
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printf(" %s\n", GetString(STR_ABOUT_TEXT2)); |
159 |
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// Open libraries |
161 |
cebix |
1.3 |
GfxBase = OpenLibrary((UBYTE *)"graphics.library", 39); |
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if (GfxBase == NULL) { |
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printf("Cannot open graphics.library V39.\n"); |
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exit(1); |
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} |
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IntuitionBase = (struct IntuitionBase *)OpenLibrary((UBYTE *)"intuition.library", 39); |
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if (IntuitionBase == NULL) { |
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printf("Cannot open intuition.library V39.\n"); |
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CloseLibrary(GfxBase); |
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exit(1); |
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} |
172 |
cebix |
1.1 |
DiskBase = (struct Library *)OpenResource((UBYTE *)"disk.resource"); |
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if (DiskBase == NULL) |
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QuitEmulator(); |
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GadToolsBase = OpenLibrary((UBYTE *)"gadtools.library", 39); |
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if (GadToolsBase == NULL) { |
177 |
cebix |
1.17 |
ErrorAlert(STR_NO_GADTOOLS_LIB_ERR); |
178 |
cebix |
1.1 |
QuitEmulator(); |
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} |
180 |
cebix |
1.3 |
IFFParseBase = OpenLibrary((UBYTE *)"iffparse.library", 39); |
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if (IFFParseBase == NULL) { |
182 |
cebix |
1.17 |
ErrorAlert(STR_NO_IFFPARSE_LIB_ERR); |
183 |
cebix |
1.3 |
QuitEmulator(); |
184 |
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} |
185 |
cebix |
1.1 |
AslBase = OpenLibrary((UBYTE *)"asl.library", 36); |
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if (AslBase == NULL) { |
187 |
cebix |
1.17 |
ErrorAlert(STR_NO_ASL_LIB_ERR); |
188 |
cebix |
1.1 |
QuitEmulator(); |
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} |
190 |
cebix |
1.6 |
|
191 |
jlachmann |
1.20 |
if (FindTask((UBYTE *) "« Enforcer »")) |
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{ |
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ErrorAlert(STR_ENFORCER_RUNNING_ERR); |
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QuitEmulator(); |
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} |
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197 |
cebix |
1.6 |
// These two can fail (the respective gfx support won't be available, then) |
198 |
cebix |
1.1 |
P96Base = OpenLibrary((UBYTE *)"Picasso96API.library", 2); |
199 |
cebix |
1.6 |
CyberGfxBase = OpenLibrary((UBYTE *)"cybergraphics.library", 2); |
200 |
cebix |
1.1 |
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201 |
cebix |
1.3 |
// Read preferences |
202 |
cebix |
1.13 |
PrefsInit(argc, argv); |
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cebix |
1.3 |
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204 |
cebix |
1.1 |
// Open AHI |
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ahi_port = CreateMsgPort(); |
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if (ahi_port) { |
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ahi_io = (struct AHIRequest *)CreateIORequest(ahi_port, sizeof(struct AHIRequest)); |
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if (ahi_io) { |
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ahi_io->ahir_Version = 2; |
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if (OpenDevice((UBYTE *)AHINAME, AHI_NO_UNIT, (struct IORequest *)ahi_io, 0) == 0) { |
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AHIBase = (struct Library *)ahi_io->ahir_Std.io_Device; |
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} |
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} |
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} |
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// Init system routines |
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SysInit(); |
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// Show preferences editor |
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if (!PrefsFindBool("nogui")) |
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if (!PrefsEditor()) |
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QuitEmulator(); |
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// Check start of Chip memory (because we need access to 0x0000..0x2000) |
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if ((uint32)FindName(&SysBase->MemList, (UBYTE *)"chip memory") < 0x2000) { |
226 |
cebix |
1.17 |
ErrorAlert(STR_NO_PREPARE_EMUL_ERR); |
227 |
cebix |
1.1 |
QuitEmulator(); |
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} |
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// Open timer.device |
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timereq = (struct timerequest *)AllocVec(sizeof(timerequest), MEMF_PUBLIC | MEMF_CLEAR); |
232 |
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if (timereq == NULL) { |
233 |
cebix |
1.17 |
ErrorAlert(STR_NO_MEM_ERR); |
234 |
cebix |
1.1 |
QuitEmulator(); |
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} |
236 |
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if (OpenDevice((UBYTE *)TIMERNAME, UNIT_MICROHZ, (struct IORequest *)timereq, 0)) { |
237 |
cebix |
1.17 |
ErrorAlert(STR_NO_TIMER_DEV_ERR); |
238 |
cebix |
1.1 |
QuitEmulator(); |
239 |
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} |
240 |
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TimerBase = (struct Library *)timereq->tr_node.io_Device; |
241 |
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242 |
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// Allocate scratch memory |
243 |
gbeauche |
1.11 |
ScratchMem = (uint8 *)AllocMem(SCRATCH_MEM_SIZE, MEMF_PUBLIC); |
244 |
cebix |
1.1 |
if (ScratchMem == NULL) { |
245 |
cebix |
1.17 |
ErrorAlert(STR_NO_MEM_ERR); |
246 |
cebix |
1.1 |
QuitEmulator(); |
247 |
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} |
248 |
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ScratchMem += SCRATCH_MEM_SIZE/2; // ScratchMem points to middle of block |
249 |
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250 |
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// Create area for Mac RAM and ROM (ROM must be higher in memory, |
251 |
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// so we allocate one big chunk and put the ROM at the top of it) |
252 |
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RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary |
253 |
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if (RAMSize < 1024*1024) { |
254 |
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WarningAlert(GetString(STR_SMALL_RAM_WARN)); |
255 |
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RAMSize = 1024*1024; |
256 |
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} |
257 |
jlachmann |
1.9 |
RAMBaseHost = (uint8 *)AllocVec(RAMSize + 0x100000, MEMF_PUBLIC); |
258 |
cebix |
1.10 |
if (RAMBaseHost == NULL) { |
259 |
jlachmann |
1.9 |
uint32 newRAMSize = AvailMem(MEMF_LARGEST) - 0x100000; |
260 |
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char xText[120]; |
261 |
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262 |
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sprintf(xText, GetString(STR_NOT_ENOUGH_MEM_WARN), RAMSize, newRAMSize); |
263 |
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264 |
cebix |
1.10 |
if (ChoiceAlert(xText, "Use", "Quit") != 1) |
265 |
jlachmann |
1.9 |
QuitEmulator(); |
266 |
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267 |
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RAMSize = newRAMSize; |
268 |
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RAMBaseHost = (uint8 *)AllocVec(RAMSize + 0x100000, MEMF_PUBLIC); |
269 |
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if (RAMBaseHost == NULL) { |
270 |
cebix |
1.17 |
ErrorAlert(STR_NO_MEM_ERR); |
271 |
jlachmann |
1.9 |
QuitEmulator(); |
272 |
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} |
273 |
cebix |
1.10 |
} |
274 |
cebix |
1.1 |
RAMBaseMac = (uint32)RAMBaseHost; |
275 |
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D(bug("Mac RAM starts at %08lx\n", RAMBaseHost)); |
276 |
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ROMBaseHost = RAMBaseHost + RAMSize; |
277 |
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ROMBaseMac = (uint32)ROMBaseHost; |
278 |
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D(bug("Mac ROM starts at %08lx\n", ROMBaseHost)); |
279 |
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280 |
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// Get rom file path from preferences |
281 |
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const char *rom_path = PrefsFindString("rom"); |
282 |
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283 |
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// Load Mac ROM |
284 |
cebix |
1.3 |
BPTR rom_fh = Open(rom_path ? (char *)rom_path : (char *)ROM_FILE_NAME, MODE_OLDFILE); |
285 |
cebix |
1.16 |
if (rom_fh == 0) { |
286 |
cebix |
1.17 |
ErrorAlert(STR_NO_ROM_FILE_ERR); |
287 |
cebix |
1.1 |
QuitEmulator(); |
288 |
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} |
289 |
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printf(GetString(STR_READING_ROM_FILE)); |
290 |
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Seek(rom_fh, 0, OFFSET_END); |
291 |
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ROMSize = Seek(rom_fh, 0, OFFSET_CURRENT); |
292 |
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if (ROMSize != 512*1024 && ROMSize != 1024*1024) { |
293 |
cebix |
1.17 |
ErrorAlert(STR_ROM_SIZE_ERR); |
294 |
cebix |
1.1 |
Close(rom_fh); |
295 |
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QuitEmulator(); |
296 |
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} |
297 |
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Seek(rom_fh, 0, OFFSET_BEGINNING); |
298 |
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if (Read(rom_fh, ROMBaseHost, ROMSize) != ROMSize) { |
299 |
cebix |
1.17 |
ErrorAlert(STR_ROM_FILE_READ_ERR); |
300 |
cebix |
1.1 |
Close(rom_fh); |
301 |
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QuitEmulator(); |
302 |
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} |
303 |
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304 |
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// Set CPU and FPU type |
305 |
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UWORD attn = SysBase->AttnFlags; |
306 |
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CPUType = attn & AFF_68040 ? 4 : (attn & AFF_68030 ? 3 : 2); |
307 |
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CPUIs68060 = attn & AFF_68060; |
308 |
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FPUType = attn & AFF_68881 ? 1 : 0; |
309 |
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310 |
cebix |
1.2 |
// Initialize everything |
311 |
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if (!InitAll()) |
312 |
cebix |
1.1 |
QuitEmulator(); |
313 |
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314 |
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// Move VBR away from 0 if neccessary |
315 |
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MoveVBR(); |
316 |
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317 |
cebix |
1.14 |
// On 68060, disable Super Bypass mode because of a CPU bug that is triggered by MacOS 8 |
318 |
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if (CPUIs68060) |
319 |
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DisableSuperBypass(); |
320 |
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321 |
cebix |
1.1 |
// Install trap handler |
322 |
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EmulatedSR = 0x2700; |
323 |
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OldTrapHandler = MainTask->tc_TrapCode; |
324 |
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MainTask->tc_TrapCode = (APTR)TrapHandlerAsm; |
325 |
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326 |
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// Allocate signal for interrupt emulation and install exception handler |
327 |
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IRQSig = AllocSignal(-1); |
328 |
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IRQSigMask = 1 << IRQSig; |
329 |
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OldExceptionHandler = MainTask->tc_ExceptCode; |
330 |
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MainTask->tc_ExceptCode = (APTR)ExceptionHandlerAsm; |
331 |
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SetExcept(SIGBREAKF_CTRL_C | IRQSigMask, SIGBREAKF_CTRL_C | IRQSigMask); |
332 |
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333 |
cebix |
1.14 |
// Start XPRAM watchdog process |
334 |
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xpram_proc = CreateNewProcTags( |
335 |
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NP_Entry, (ULONG)xpram_func, |
336 |
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NP_Name, (ULONG)"Basilisk II XPRAM Watchdog", |
337 |
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NP_Priority, 0, |
338 |
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TAG_END |
339 |
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); |
340 |
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341 |
cebix |
1.1 |
// Start 60Hz process |
342 |
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tick_proc = CreateNewProcTags( |
343 |
cebix |
1.3 |
NP_Entry, (ULONG)tick_func, |
344 |
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NP_Name, (ULONG)"Basilisk II 60Hz", |
345 |
cebix |
1.1 |
NP_Priority, 5, |
346 |
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TAG_END |
347 |
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); |
348 |
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349 |
|
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// Set task priority to -1 so we don't use all processing time |
350 |
|
|
SetTaskPri(MainTask, -1); |
351 |
|
|
|
352 |
cebix |
1.10 |
WriteMacInt32(0xbff, 0); // MacsBugFlags |
353 |
jlachmann |
1.9 |
|
354 |
cebix |
1.1 |
// Swap stack to Mac RAM area |
355 |
|
|
stack_swap.stk_Lower = RAMBaseHost; |
356 |
|
|
stack_swap.stk_Upper = (ULONG)RAMBaseHost + RAMSize; |
357 |
|
|
stack_swap.stk_Pointer = RAMBaseHost + 0x8000; |
358 |
|
|
StackSwap(&stack_swap); |
359 |
|
|
stack_swapped = true; |
360 |
|
|
|
361 |
|
|
// Jump to ROM boot routine |
362 |
|
|
Start680x0(); |
363 |
|
|
|
364 |
|
|
QuitEmulator(); |
365 |
|
|
return 0; |
366 |
|
|
} |
367 |
|
|
|
368 |
|
|
void Start680x0(void) |
369 |
|
|
{ |
370 |
|
|
typedef void (*rom_func)(void); |
371 |
|
|
rom_func fp = (rom_func)(ROMBaseHost + 0x2a); |
372 |
|
|
fp(); |
373 |
|
|
} |
374 |
|
|
|
375 |
|
|
|
376 |
|
|
/* |
377 |
|
|
* Quit emulator (__saveds because it might be called from an exception) |
378 |
|
|
*/ |
379 |
|
|
|
380 |
cebix |
1.3 |
// Assembly entry point |
381 |
|
|
void __saveds quit_emulator(void) |
382 |
|
|
{ |
383 |
|
|
QuitEmulator(); |
384 |
|
|
} |
385 |
|
|
|
386 |
|
|
void QuitEmulator(void) |
387 |
cebix |
1.1 |
{ |
388 |
cebix |
1.14 |
// Stop 60Hz process |
389 |
cebix |
1.7 |
if (tick_proc) { |
390 |
|
|
SetSignal(0, SIGF_SINGLE); |
391 |
|
|
tick_proc_active = false; |
392 |
|
|
Wait(SIGF_SINGLE); |
393 |
|
|
} |
394 |
|
|
|
395 |
cebix |
1.14 |
// Stop XPRAM watchdog process |
396 |
|
|
if (xpram_proc) { |
397 |
|
|
SetSignal(0, SIGF_SINGLE); |
398 |
|
|
xpram_proc_active = false; |
399 |
|
|
Wait(SIGF_SINGLE); |
400 |
|
|
} |
401 |
|
|
|
402 |
cebix |
1.1 |
// Restore stack |
403 |
|
|
if (stack_swapped) { |
404 |
|
|
stack_swapped = false; |
405 |
|
|
StackSwap(&stack_swap); |
406 |
|
|
} |
407 |
|
|
|
408 |
|
|
// Remove exception handler |
409 |
|
|
if (IRQSig >= 0) { |
410 |
|
|
SetExcept(0, SIGBREAKF_CTRL_C | IRQSigMask); |
411 |
|
|
MainTask->tc_ExceptCode = OldExceptionHandler; |
412 |
|
|
FreeSignal(IRQSig); |
413 |
|
|
} |
414 |
|
|
|
415 |
|
|
// Remove trap handler |
416 |
|
|
MainTask->tc_TrapCode = OldTrapHandler; |
417 |
|
|
|
418 |
cebix |
1.2 |
// Deinitialize everything |
419 |
|
|
ExitAll(); |
420 |
cebix |
1.1 |
|
421 |
|
|
// Delete RAM/ROM area |
422 |
|
|
if (RAMBaseHost) |
423 |
jlachmann |
1.9 |
FreeVec(RAMBaseHost); |
424 |
cebix |
1.1 |
|
425 |
|
|
// Delete scratch memory area |
426 |
|
|
if (ScratchMem) |
427 |
|
|
FreeMem((void *)(ScratchMem - SCRATCH_MEM_SIZE/2), SCRATCH_MEM_SIZE); |
428 |
|
|
|
429 |
|
|
// Close timer.device |
430 |
|
|
if (TimerBase) |
431 |
|
|
CloseDevice((struct IORequest *)timereq); |
432 |
|
|
if (timereq) |
433 |
|
|
FreeVec(timereq); |
434 |
|
|
|
435 |
|
|
// Exit system routines |
436 |
|
|
SysExit(); |
437 |
|
|
|
438 |
|
|
// Close AHI |
439 |
|
|
if (AHIBase) |
440 |
|
|
CloseDevice((struct IORequest *)ahi_io); |
441 |
|
|
if (ahi_io) |
442 |
|
|
DeleteIORequest((struct IORequest *)ahi_io); |
443 |
|
|
if (ahi_port) |
444 |
|
|
DeleteMsgPort(ahi_port); |
445 |
|
|
|
446 |
|
|
// Exit preferences |
447 |
|
|
PrefsExit(); |
448 |
|
|
|
449 |
|
|
// Close libraries |
450 |
cebix |
1.6 |
if (CyberGfxBase) |
451 |
|
|
CloseLibrary(CyberGfxBase); |
452 |
cebix |
1.1 |
if (P96Base) |
453 |
|
|
CloseLibrary(P96Base); |
454 |
|
|
if (AslBase) |
455 |
|
|
CloseLibrary(AslBase); |
456 |
cebix |
1.3 |
if (IFFParseBase) |
457 |
|
|
CloseLibrary(IFFParseBase); |
458 |
cebix |
1.1 |
if (GadToolsBase) |
459 |
|
|
CloseLibrary(GadToolsBase); |
460 |
cebix |
1.3 |
if (IntuitionBase) |
461 |
|
|
CloseLibrary((struct Library *)IntuitionBase); |
462 |
|
|
if (GfxBase) |
463 |
|
|
CloseLibrary(GfxBase); |
464 |
cebix |
1.1 |
|
465 |
|
|
exit(0); |
466 |
|
|
} |
467 |
|
|
|
468 |
|
|
|
469 |
|
|
/* |
470 |
|
|
* Code was patched, flush caches if neccessary (i.e. when using a real 680x0 |
471 |
|
|
* or a dynamically recompiling emulator) |
472 |
|
|
*/ |
473 |
|
|
|
474 |
|
|
void FlushCodeCache(void *start, uint32 size) |
475 |
|
|
{ |
476 |
|
|
CacheClearE(start, size, CACRF_ClearI | CACRF_ClearD); |
477 |
|
|
} |
478 |
|
|
|
479 |
|
|
|
480 |
|
|
/* |
481 |
cebix |
1.18 |
* Mutexes |
482 |
|
|
*/ |
483 |
|
|
|
484 |
|
|
struct B2_mutex { |
485 |
|
|
int dummy; //!! |
486 |
|
|
}; |
487 |
|
|
|
488 |
|
|
B2_mutex *B2_create_mutex(void) |
489 |
|
|
{ |
490 |
|
|
return new B2_mutex; |
491 |
|
|
} |
492 |
|
|
|
493 |
|
|
void B2_lock_mutex(B2_mutex *mutex) |
494 |
|
|
{ |
495 |
|
|
} |
496 |
|
|
|
497 |
|
|
void B2_unlock_mutex(B2_mutex *mutex) |
498 |
|
|
{ |
499 |
|
|
} |
500 |
|
|
|
501 |
|
|
void B2_delete_mutex(B2_mutex *mutex) |
502 |
|
|
{ |
503 |
|
|
delete mutex; |
504 |
|
|
} |
505 |
|
|
|
506 |
|
|
|
507 |
|
|
/* |
508 |
cebix |
1.1 |
* Interrupt flags (must be handled atomically!) |
509 |
|
|
*/ |
510 |
|
|
|
511 |
|
|
uint32 InterruptFlags; |
512 |
|
|
|
513 |
|
|
void SetInterruptFlag(uint32 flag) |
514 |
|
|
{ |
515 |
|
|
AtomicOr(&InterruptFlags, flag); |
516 |
|
|
} |
517 |
|
|
|
518 |
|
|
void ClearInterruptFlag(uint32 flag) |
519 |
|
|
{ |
520 |
|
|
AtomicAnd(&InterruptFlags, ~flag); |
521 |
|
|
} |
522 |
|
|
|
523 |
|
|
void TriggerInterrupt(void) |
524 |
|
|
{ |
525 |
|
|
Signal(MainTask, IRQSigMask); |
526 |
jlachmann |
1.9 |
} |
527 |
|
|
|
528 |
|
|
void TriggerNMI(void) |
529 |
|
|
{ |
530 |
|
|
AsmTriggerNMI(); |
531 |
cebix |
1.1 |
} |
532 |
|
|
|
533 |
|
|
|
534 |
|
|
/* |
535 |
cebix |
1.14 |
* 60Hz thread (really 60.15Hz) |
536 |
cebix |
1.1 |
*/ |
537 |
|
|
|
538 |
|
|
static __saveds void tick_func(void) |
539 |
|
|
{ |
540 |
|
|
int tick_counter = 0; |
541 |
|
|
struct MsgPort *timer_port = NULL; |
542 |
|
|
struct timerequest *timer_io = NULL; |
543 |
|
|
ULONG timer_mask = 0; |
544 |
|
|
|
545 |
|
|
// Start 60Hz timer |
546 |
|
|
timer_port = CreateMsgPort(); |
547 |
|
|
if (timer_port) { |
548 |
|
|
timer_io = (struct timerequest *)CreateIORequest(timer_port, sizeof(struct timerequest)); |
549 |
|
|
if (timer_io) { |
550 |
|
|
if (!OpenDevice((UBYTE *)TIMERNAME, UNIT_MICROHZ, (struct IORequest *)timer_io, 0)) { |
551 |
|
|
timer_mask = 1 << timer_port->mp_SigBit; |
552 |
|
|
timer_io->tr_node.io_Command = TR_ADDREQUEST; |
553 |
|
|
timer_io->tr_time.tv_secs = 0; |
554 |
|
|
timer_io->tr_time.tv_micro = 16625; |
555 |
|
|
SendIO((struct IORequest *)timer_io); |
556 |
|
|
} |
557 |
|
|
} |
558 |
|
|
} |
559 |
|
|
|
560 |
|
|
while (tick_proc_active) { |
561 |
|
|
|
562 |
|
|
// Wait for timer tick |
563 |
|
|
Wait(timer_mask); |
564 |
|
|
|
565 |
|
|
// Restart timer |
566 |
|
|
timer_io->tr_node.io_Command = TR_ADDREQUEST; |
567 |
|
|
timer_io->tr_time.tv_secs = 0; |
568 |
|
|
timer_io->tr_time.tv_micro = 16625; |
569 |
|
|
SendIO((struct IORequest *)timer_io); |
570 |
|
|
|
571 |
|
|
// Pseudo Mac 1Hz interrupt, update local time |
572 |
|
|
if (++tick_counter > 60) { |
573 |
|
|
tick_counter = 0; |
574 |
|
|
WriteMacInt32(0x20c, TimerDateTime()); |
575 |
cebix |
1.7 |
SetInterruptFlag(INTFLAG_1HZ); |
576 |
|
|
TriggerInterrupt(); |
577 |
cebix |
1.1 |
} |
578 |
|
|
|
579 |
|
|
// Trigger 60Hz interrupt |
580 |
|
|
SetInterruptFlag(INTFLAG_60HZ); |
581 |
|
|
TriggerInterrupt(); |
582 |
|
|
} |
583 |
|
|
|
584 |
|
|
// Stop timer |
585 |
|
|
if (timer_io) { |
586 |
|
|
if (!CheckIO((struct IORequest *)timer_io)) |
587 |
|
|
AbortIO((struct IORequest *)timer_io); |
588 |
|
|
WaitIO((struct IORequest *)timer_io); |
589 |
|
|
CloseDevice((struct IORequest *)timer_io); |
590 |
|
|
DeleteIORequest(timer_io); |
591 |
|
|
} |
592 |
|
|
if (timer_port) |
593 |
|
|
DeleteMsgPort(timer_port); |
594 |
cebix |
1.14 |
|
595 |
|
|
// Main task asked for termination, send signal |
596 |
|
|
Forbid(); |
597 |
|
|
Signal(MainTask, SIGF_SINGLE); |
598 |
|
|
} |
599 |
|
|
|
600 |
|
|
|
601 |
|
|
/* |
602 |
|
|
* XPRAM watchdog thread (saves XPRAM every minute) |
603 |
|
|
*/ |
604 |
|
|
|
605 |
|
|
static __saveds void xpram_func(void) |
606 |
|
|
{ |
607 |
cebix |
1.19 |
uint8 last_xpram[XPRAM_SIZE]; |
608 |
|
|
memcpy(last_xpram, XPRAM, XPRAM_SIZE); |
609 |
cebix |
1.14 |
|
610 |
|
|
while (xpram_proc_active) { |
611 |
|
|
for (int i=0; i<60 && xpram_proc_active; i++) |
612 |
|
|
Delay(50); // Only wait 1 second so we quit promptly when xpram_proc_active becomes false |
613 |
cebix |
1.19 |
if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) { |
614 |
|
|
memcpy(last_xpram, XPRAM, XPRAM_SIZE); |
615 |
cebix |
1.14 |
SaveXPRAM(); |
616 |
|
|
} |
617 |
|
|
} |
618 |
cebix |
1.1 |
|
619 |
|
|
// Main task asked for termination, send signal |
620 |
|
|
Forbid(); |
621 |
|
|
Signal(MainTask, SIGF_SINGLE); |
622 |
|
|
} |
623 |
|
|
|
624 |
|
|
|
625 |
|
|
/* |
626 |
|
|
* Display error alert |
627 |
|
|
*/ |
628 |
|
|
|
629 |
|
|
void ErrorAlert(const char *text) |
630 |
|
|
{ |
631 |
|
|
if (PrefsFindBool("nogui")) { |
632 |
|
|
printf(GetString(STR_SHELL_ERROR_PREFIX), text); |
633 |
|
|
return; |
634 |
|
|
} |
635 |
|
|
EasyStruct req; |
636 |
|
|
req.es_StructSize = sizeof(EasyStruct); |
637 |
|
|
req.es_Flags = 0; |
638 |
|
|
req.es_Title = (UBYTE *)GetString(STR_ERROR_ALERT_TITLE); |
639 |
|
|
req.es_TextFormat = (UBYTE *)GetString(STR_GUI_ERROR_PREFIX); |
640 |
|
|
req.es_GadgetFormat = (UBYTE *)GetString(STR_QUIT_BUTTON); |
641 |
cebix |
1.3 |
EasyRequest(NULL, &req, NULL, (ULONG)text); |
642 |
cebix |
1.1 |
} |
643 |
|
|
|
644 |
|
|
|
645 |
|
|
/* |
646 |
|
|
* Display warning alert |
647 |
|
|
*/ |
648 |
|
|
|
649 |
|
|
void WarningAlert(const char *text) |
650 |
|
|
{ |
651 |
|
|
if (PrefsFindBool("nogui")) { |
652 |
|
|
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
653 |
|
|
return; |
654 |
|
|
} |
655 |
|
|
EasyStruct req; |
656 |
|
|
req.es_StructSize = sizeof(EasyStruct); |
657 |
|
|
req.es_Flags = 0; |
658 |
|
|
req.es_Title = (UBYTE *)GetString(STR_WARNING_ALERT_TITLE); |
659 |
|
|
req.es_TextFormat = (UBYTE *)GetString(STR_GUI_WARNING_PREFIX); |
660 |
|
|
req.es_GadgetFormat = (UBYTE *)GetString(STR_OK_BUTTON); |
661 |
cebix |
1.3 |
EasyRequest(NULL, &req, NULL, (ULONG)text); |
662 |
cebix |
1.1 |
} |
663 |
|
|
|
664 |
|
|
|
665 |
|
|
/* |
666 |
|
|
* Display choice alert |
667 |
|
|
*/ |
668 |
|
|
|
669 |
|
|
bool ChoiceAlert(const char *text, const char *pos, const char *neg) |
670 |
|
|
{ |
671 |
|
|
char str[256]; |
672 |
|
|
sprintf(str, "%s|%s", pos, neg); |
673 |
|
|
EasyStruct req; |
674 |
|
|
req.es_StructSize = sizeof(EasyStruct); |
675 |
|
|
req.es_Flags = 0; |
676 |
|
|
req.es_Title = (UBYTE *)GetString(STR_WARNING_ALERT_TITLE); |
677 |
|
|
req.es_TextFormat = (UBYTE *)GetString(STR_GUI_WARNING_PREFIX); |
678 |
|
|
req.es_GadgetFormat = (UBYTE *)str; |
679 |
cebix |
1.3 |
return EasyRequest(NULL, &req, NULL, (ULONG)text); |
680 |
cebix |
1.1 |
} |
681 |
|
|
|
682 |
|
|
|
683 |
|
|
/* |
684 |
|
|
* Illegal Instruction and Privilege Violation trap handlers |
685 |
|
|
*/ |
686 |
|
|
|
687 |
|
|
struct trap_regs { // This must match the layout of M68kRegisters |
688 |
|
|
uint32 d[8]; |
689 |
|
|
uint32 a[8]; |
690 |
|
|
uint16 sr; |
691 |
|
|
uint32 pc; |
692 |
|
|
}; |
693 |
|
|
|
694 |
|
|
void __saveds IllInstrHandler(trap_regs *r) |
695 |
|
|
{ |
696 |
|
|
uint16 opcode = *(uint16 *)(r->pc); |
697 |
|
|
if ((opcode & 0xff00) != 0x7100) { |
698 |
|
|
printf("Illegal Instruction %04x at %08lx\n", *(uint16 *)(r->pc), r->pc); |
699 |
|
|
printf("d0 %08lx d1 %08lx d2 %08lx d3 %08lx\n" |
700 |
|
|
"d4 %08lx d5 %08lx d6 %08lx d7 %08lx\n" |
701 |
|
|
"a0 %08lx a1 %08lx a2 %08lx a3 %08lx\n" |
702 |
|
|
"a4 %08lx a5 %08lx a6 %08lx a7 %08lx\n" |
703 |
|
|
"sr %04x\n", |
704 |
|
|
r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7], |
705 |
|
|
r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7], |
706 |
|
|
r->sr); |
707 |
|
|
QuitEmulator(); |
708 |
|
|
} else { |
709 |
|
|
// Disable interrupts |
710 |
|
|
uint16 sr = EmulatedSR; |
711 |
|
|
EmulatedSR |= 0x0700; |
712 |
|
|
|
713 |
|
|
// Call opcode routine |
714 |
cebix |
1.8 |
EmulOp(opcode, (M68kRegisters *)r); |
715 |
cebix |
1.1 |
r->pc += 2; |
716 |
|
|
|
717 |
|
|
// Restore interrupts |
718 |
|
|
EmulatedSR = sr; |
719 |
|
|
if ((EmulatedSR & 0x0700) == 0 && InterruptFlags) |
720 |
|
|
Signal(MainTask, IRQSigMask); |
721 |
|
|
} |
722 |
|
|
} |
723 |
|
|
|
724 |
|
|
void __saveds PrivViolHandler(trap_regs *r) |
725 |
|
|
{ |
726 |
|
|
printf("Privileged instruction %04x %04x at %08lx\n", *(uint16 *)(r->pc), *(uint16 *)(r->pc + 2), r->pc); |
727 |
|
|
printf("d0 %08lx d1 %08lx d2 %08lx d3 %08lx\n" |
728 |
|
|
"d4 %08lx d5 %08lx d6 %08lx d7 %08lx\n" |
729 |
|
|
"a0 %08lx a1 %08lx a2 %08lx a3 %08lx\n" |
730 |
|
|
"a4 %08lx a5 %08lx a6 %08lx a7 %08lx\n" |
731 |
|
|
"sr %04x\n", |
732 |
|
|
r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7], |
733 |
|
|
r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7], |
734 |
|
|
r->sr); |
735 |
|
|
QuitEmulator(); |
736 |
|
|
} |