BasiliskII/src/emul_op.cpp

/*
 *  emul_op.cpp - 68k opcodes for ROM patches
 *
 *  Basilisk II (C) 1997-2000 Christian Bauer
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <string.h>
#include <stdio.h>

#include "sysdeps.h"
#include "cpu_emulation.h"
#include "main.h"
#include "macos_util.h"
#include "rom_patches.h"
#include "rsrc_patches.h"
#include "xpram.h"
#include "adb.h"
#include "timer.h"
#include "clip.h"
#include "serial.h"
#include "sony.h"
#include "disk.h"
#include "cdrom.h"
#include "scsi.h"
#include "video.h"
#include "audio.h"
#include "ether.h"
#include "extfs.h"
#include "emul_op.h"

#if ENABLE_MON
#include "mon.h"
#endif

#define DEBUG 0
#include "debug.h"


/*
 *  Execute EMUL_OP opcode (called by 68k emulator or Illegal Instruction trap handler)
 */

void EmulOp(uint16 opcode, M68kRegisters *r)
{
        D(bug("EmulOp %04x\n", opcode));
        switch (opcode) {
                case M68K_EMUL_BREAK: {                         // Breakpoint
                        printf("*** Breakpoint\n");
                        printf("d0 %08lx d1 %08lx d2 %08lx d3 %08lx\n"
                                   "d4 %08lx d5 %08lx d6 %08lx d7 %08lx\n"
                                   "a0 %08lx a1 %08lx a2 %08lx a3 %08lx\n"
                                   "a4 %08lx a5 %08lx a6 %08lx a7 %08lx\n"
                                   "sr %04x\n",
                                   r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7],
                                   r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7],
                                   r->sr);
#if ENABLE_MON
                        char *arg[2] = {"rmon", NULL};
                        mon(1, arg);
#endif
                        QuitEmulator();
                        break;
                }

                case M68K_EMUL_OP_SHUTDOWN:                     // Quit emulator
                        QuitEmulator();
                        break;

                case M68K_EMUL_OP_RESET: {                      // MacOS reset
                        D(bug("*** RESET ***\n"));
                        TimerReset();
                        EtherReset();

                        // Create BootGlobs at top of memory
                        Mac_memset(RAMBaseMac + RAMSize - 4096, 0, 4096);
                        uint32 boot_globs = RAMBaseMac + RAMSize - 0x1c;
                        WriteMacInt32(boot_globs + 0x00, RAMBaseMac);   // First RAM bank
                        WriteMacInt32(boot_globs + 0x04, RAMSize);
                        WriteMacInt32(boot_globs + 0x08, 0xffffffff);   // End of bank table
                        WriteMacInt32(boot_globs + 0x0c, 0);

                        // Setup registers for boot routine
                        r->d[0] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x18);      // AddrMapFlags
                        r->d[1] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x1c);      // UnivROMFlags
                        r->d[2] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x10);      // HWCfgFlags/IDs
                        if (FPUType)
                                r->d[2] |= 0x10000000;                                                                  // Set FPU flag if FPU present
                        else
                                r->d[2] &= 0xefffffff;                                                                  // Clear FPU flag if no FPU present
                        r->a[0] = ROMBaseMac + UniversalInfo + ReadMacInt32(ROMBaseMac + UniversalInfo);// AddrMap
                        r->a[1] = ROMBaseMac + UniversalInfo;                                           // UniversalInfo
                        r->a[6] = boot_globs;                                                                           // BootGlobs
                        r->a[7] = RAMBaseMac + 0x10000;                                                         // Boot stack
                        break;
                }

                case M68K_EMUL_OP_CLKNOMEM: {           // Clock/PRAM operations
                        bool is_read = r->d[1] & 0x80;
                        if ((r->d[1] & 0x78) == 0x38) {
                                // XPRAM
                                uint8 reg = (r->d[1] << 5) & 0xe0 | (r->d[1] >> 10) & 0x1f;
                                if (is_read) {
                                        r->d[2] = XPRAM[reg];
                                        bool localtalk = !(XPRAM[0xe0] || XPRAM[0xe1]); // LocalTalk enabled?
                                        switch (reg) {
                                                case 0x08:
                                                        if (ROMVersion != ROM_VERSION_32)
                                                                r->d[2] &= 0xf8;
                                                        break;
                                                case 0x8a:
                                                        r->d[2] |= 0x05;        // 32bit mode is always enabled
                                                        break;
                                                case 0xe0:                              // Disable LocalTalk (use EtherTalk instead)
                                                        if (localtalk)
                                                                r->d[2] = 0x00;
                                                        break;
                                                case 0xe1:
                                                        if (localtalk)
                                                                r->d[2] = 0xf1;
                                                        break;
                                                case 0xe2:
                                                        if (localtalk)
                                                                r->d[2] = 0x00;
                                                        break;
                                                case 0xe3:
                                                        if (localtalk)
                                                                r->d[2] = 0x0a;
                                                        break;
                                        }
                                        D(bug("Read XPRAM %02x->%02lx\n", reg, r->d[2]));
                                } else {
                                        D(bug("Write XPRAM %02x<-%02lx\n", reg, r->d[2] & 0xff));
                                        if (reg == 0x8a && !TwentyFourBitAddressing)
                                                r->d[2] |= 0x05;        // 32bit mode is always enabled if possible
                                        XPRAM[reg] = r->d[2];
                                }
                        } else {
                                // PRAM, RTC and other clock registers
                                uint8 reg = (r->d[1] >> 2) & 0x1f;
                                if (reg >= 0x10 || (reg >= 0x08 && reg < 0x0c)) {
                                        if (is_read) {
                                                r->d[2] = XPRAM[reg];
                                                D(bug("Read XPRAM %02x->%02x\n", reg, XPRAM[reg]));
                                        } else {
                                                D(bug("Write PRAM %02x<-%02lx\n", reg, r->d[2]));
                                                XPRAM[reg] = r->d[2];
                                        }
                                } else if (reg < 0x08 && is_read) {
                                        uint32 t = TimerDateTime();
                                        uint8 b = t;
                                        switch (reg & 3) {
                                                case 1: b = t >> 8; break;
                                                case 2: b = t >> 16; break;
                                                case 3: b = t >> 24; break;
                                        }
                                        r->d[2] = b;
                                } else
                                        D(bug("RTC %s op %d, d1 %08lx d2 %08lx\n", is_read ? "read" : "write", reg, r->d[1], r->d[2]));
                        }
                        r->d[0] = 0;
                        r->d[1] = r->d[2];
                        break;
                }

                case M68K_EMUL_OP_READ_XPRAM:           // Read from XPRAM (ROM10/11)
                        D(bug("Read XPRAM %02lx\n", r->d[1]));
                        r->d[1] = XPRAM[r->d[1] & 0xff];
                        break;

                case M68K_EMUL_OP_READ_XPRAM2:          // Read from XPRAM (ROM15)
                        D(bug("Read XPRAM %02lx\n", r->d[0]));
                        r->d[0] = XPRAM[r->d[0] & 0xff];
                        break;

                case M68K_EMUL_OP_PATCH_BOOT_GLOBS:     // Patch BootGlobs at startup
                        D(bug("Patch BootGlobs\n"));
                        WriteMacInt32(r->a[4] - 20, RAMBaseMac + RAMSize);                      // MemTop
                        WriteMacInt8(r->a[4] - 26, 0);                                                          // No MMU
                        WriteMacInt8(r->a[4] - 25, ReadMacInt8(r->a[4] - 25) | 1);      // No MMU
                        r->a[6] = RAMBaseMac + RAMSize;
                        break;

                case M68K_EMUL_OP_FIX_BOOTSTACK:        // Set boot stack to 3/4 of RAM (7.5)
                        D(bug("Fix boot stack\n"));
                        r->a[1] = RAMBaseMac + RAMSize * 3 / 4;
                        break;

                case M68K_EMUL_OP_FIX_MEMSIZE: {        // Set correct logical and physical memory size
                        D(bug("Fix MemSize\n"));
                        uint32 diff = ReadMacInt32(0x1ef8) - ReadMacInt32(0x1ef4);      // Difference between logical and physical size
                        WriteMacInt32(0x1ef8, RAMSize);                 // Physical RAM size
                        WriteMacInt32(0x1ef4, RAMSize - diff);  // Logical RAM size
                        break;
                }

                case M68K_EMUL_OP_ADBOP:                        // ADBOp() replacement
                        ADBOp(r->d[0], Mac2HostAddr(ReadMacInt32(r->a[0])));
                        break;

                case M68K_EMUL_OP_INSTIME:                      // InsTime() replacement
                        r->d[0] = InsTime(r->a[0], r->d[1]);
                        break;

                case M68K_EMUL_OP_RMVTIME:                      // RmvTime() replacement
                        r->d[0] = RmvTime(r->a[0]);
                        break;

                case M68K_EMUL_OP_PRIMETIME:            // PrimeTime() replacement
                        r->d[0] = PrimeTime(r->a[0], r->d[0]);
                        break;

                case M68K_EMUL_OP_MICROSECONDS:         // Microseconds() replacement
                        Microseconds(r->a[0], r->d[0]);
                        break;

                case M68K_EMUL_OP_INSTALL_DRIVERS: {// Patch to install our own drivers during startup
                        // Install drivers
                        D(bug("InstallDrivers\n"));
                        InstallDrivers(r->a[0]);

                        // Install PutScrap() patch
                        M68kRegisters r;
                        r.d[0] = 0xa9fe;
                        r.a[0] = PutScrapPatch;
                        Execute68kTrap(0xa647, &r);             // SetToolTrap()

                        // Setup fake ASC registers
                        if (ROMVersion == ROM_VERSION_32) {
                                r.d[0] = 0x1000;
                                Execute68kTrap(0xa71e, &r);             // NewPtrSysClear()
                                uint32 asc_regs = r.a[0];
                                D(bug("ASC registers at %08lx\n", asc_regs));
                                WriteMacInt8(asc_regs + 0x800, 0x0f);   // Set ASC version number
                                WriteMacInt32(0xcc0, asc_regs);                 // Set ASCBase
                        }
                        break;
                }

                case M68K_EMUL_OP_SERD:                         // Install serial drivers
                        D(bug("InstallSERD\n"));
                        InstallSERD();
                        break;

                case M68K_EMUL_OP_SONY_OPEN:            // Floppy driver functions
                        r->d[0] = SonyOpen(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_SONY_PRIME:
                        r->d[0] = SonyPrime(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_SONY_CONTROL:
                        r->d[0] = SonyControl(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_SONY_STATUS:
                        r->d[0] = SonyStatus(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_DISK_OPEN:            // Disk driver functions
                        r->d[0] = DiskOpen(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_DISK_PRIME:
                        r->d[0] = DiskPrime(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_DISK_CONTROL:
                        r->d[0] = DiskControl(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_DISK_STATUS:
                        r->d[0] = DiskStatus(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_CDROM_OPEN:           // CD-ROM driver functions
                        r->d[0] = CDROMOpen(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_CDROM_PRIME:
                        r->d[0] = CDROMPrime(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_CDROM_CONTROL:
                        r->d[0] = CDROMControl(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_CDROM_STATUS:
                        r->d[0] = CDROMStatus(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_VIDEO_OPEN:           // Video driver functions
                        r->d[0] = VideoDriverOpen(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_VIDEO_CONTROL:
                        r->d[0] = VideoDriverControl(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_VIDEO_STATUS:
                        r->d[0] = VideoDriverStatus(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_SERIAL_OPEN:          // Serial driver functions
                        r->d[0] = SerialOpen(r->a[0], r->a[1], r->d[0]);
                        break;

                case M68K_EMUL_OP_SERIAL_PRIME:
                        r->d[0] = SerialPrime(r->a[0], r->a[1], r->d[0]);
                        break;

                case M68K_EMUL_OP_SERIAL_CONTROL:
                        r->d[0] = SerialControl(r->a[0], r->a[1], r->d[0]);
                        break;

                case M68K_EMUL_OP_SERIAL_STATUS:
                        r->d[0] = SerialStatus(r->a[0], r->a[1], r->d[0]);
                        break;

                case M68K_EMUL_OP_SERIAL_CLOSE:
                        r->d[0] = SerialClose(r->a[0], r->a[1], r->d[0]);
                        break;

                case M68K_EMUL_OP_ETHER_OPEN:           // Ethernet driver functions
                        r->d[0] = EtherOpen(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_ETHER_CONTROL:
                        r->d[0] = EtherControl(r->a[0], r->a[1]);
                        break;

                case M68K_EMUL_OP_ETHER_READ_PACKET:
                        EtherReadPacket((uint8 **)&r->a[0], r->a[3], r->d[3], r->d[1]);
                        break;

                case M68K_EMUL_OP_SCSI_DISPATCH: {      // SCSIDispatch() replacement
                        uint32 ret = ReadMacInt32(r->a[7]);             // Get return address
                        uint16 sel = ReadMacInt16(r->a[7] + 4); // Get selector
                        r->a[7] += 6;
                        int stack = 0;
                        switch (sel) {
                                case 0:         // SCSIReset
                                        WriteMacInt16(r->a[7], SCSIReset());
                                        stack = 0;
                                        break;
                                case 1:         // SCSIGet
                                        WriteMacInt16(r->a[7], SCSIGet());
                                        stack = 0;
                                        break;
                                case 2:         // SCSISelect
                                case 11:        // SCSISelAtn
                                        WriteMacInt16(r->a[7] + 2, SCSISelect(ReadMacInt16(r->a[7]) & 0xff));
                                        stack = 2;
                                        break;
                                case 3:         // SCSICmd
                                        WriteMacInt16(r->a[7] + 6, SCSICmd(ReadMacInt16(r->a[7]), Mac2HostAddr(ReadMacInt32(r->a[7] + 2))));
                                        stack = 6;
                                        break;
                                case 4:         // SCSIComplete
                                        WriteMacInt16(r->a[7] + 12, SCSIComplete(ReadMacInt32(r->a[7]), ReadMacInt32(r->a[7] + 4), ReadMacInt32(r->a[7] + 8)));
                                        stack = 12;
                                        break;
                                case 5:         // SCSIRead
                                case 8:         // SCSIRBlind
                                        WriteMacInt16(r->a[7] + 4, SCSIRead(ReadMacInt32(r->a[7])));
                                        stack = 4;
                                        break;
                                case 6:         // SCSIWrite
                                case 9:         // SCSIWBlind
                                        WriteMacInt16(r->a[7] + 4, SCSIWrite(ReadMacInt32(r->a[7])));
                                        stack = 4;
                                        break;
                                case 10:        // SCSIStat
                                        WriteMacInt16(r->a[7], SCSIStat());
                                        stack = 0;
                                        break;
                                case 12:        // SCSIMsgIn
                                        WriteMacInt16(r->a[7] + 4, 0);
                                        stack = 4;
                                        break;
                                case 13:        // SCSIMsgOut
                                        WriteMacInt16(r->a[7] + 2, 0);
                                        stack = 2;
                                        break;
                                case 14:        // SCSIMgrBusy
                                        WriteMacInt16(r->a[7], SCSIMgrBusy());
                                        stack = 0;
                                        break;
                                default:
                                        printf("FATAL: SCSIDispatch(%d): illegal selector\n", sel);
                                        QuitEmulator();
                                        break;
                        }
                        r->a[0] = ret;                  // "rtd" emulation, a0 = return address, a1 = new stack pointer
                        r->a[1] = r->a[7] + stack;
                        break;
                }

                case M68K_EMUL_OP_IRQ:                  // Level 1 interrupt
                        r->d[0] = 0;
                        if (InterruptFlags & INTFLAG_60HZ) {
                                ClearInterruptFlag(INTFLAG_60HZ);
                                if (HasMacStarted()) {

                                        // Mac has started, execute all 60Hz interrupt functions
                                        ADBInterrupt();
                                        TimerInterrupt();
                                        VideoInterrupt();
                                        SonyInterrupt();
                                        DiskInterrupt();
                                        CDROMInterrupt();

                                        // Call DoVBLTask(0)
                                        if (ROMVersion == ROM_VERSION_32) {
                                                M68kRegisters r2;
                                                r2.d[0] = 0;
                                                Execute68kTrap(0xa072, &r2);
                                        }

                                        r->d[0] = 1;                    // Flag: 68k interrupt routine executes VBLTasks etc.
                                }
                        }
                        if (InterruptFlags & INTFLAG_SERIAL) {
                                ClearInterruptFlag(INTFLAG_SERIAL);
                                SerialInterrupt();
                        }
                        if (InterruptFlags & INTFLAG_ETHER) {
                                ClearInterruptFlag(INTFLAG_ETHER);
                                EtherInterrupt();
                        }
                        if (InterruptFlags & INTFLAG_AUDIO) {
                                ClearInterruptFlag(INTFLAG_AUDIO);
                                AudioInterrupt();
                        }
                        break;

                case M68K_EMUL_OP_PUT_SCRAP: {          // PutScrap() patch
                        void *scrap = Mac2HostAddr(ReadMacInt32(r->a[7] + 4));
                        uint32 type = ReadMacInt32(r->a[7] + 8);
                        int32 length = ReadMacInt32(r->a[7] + 12);
                        PutScrap(type, scrap, length);
                        break;
                }

                case M68K_EMUL_OP_CHECKLOAD: {          // vCheckLoad() patch (resource loader)
                        uint32 type = r->d[1];
                        int16 id = ReadMacInt16(r->a[2]);
                        if (r->a[0] == 0)
                                break;
                        uint32 adr = ReadMacInt32(r->a[0]);
                        if (adr == 0)
                                break;
                        uint8 *p = Mac2HostAddr(adr);
                        uint32 size = ReadMacInt32(adr - 8) & 0xffffff;
                        CheckLoad(type, id, p, size);
                        break;
                }

                case M68K_EMUL_OP_AUDIO:                        // Audio component dispatch function
                        r->d[0] = AudioDispatch(r->a[3], r->a[4]);
                        break;

#if SUPPORTS_EXTFS
                case M68K_EMUL_OP_EXTFS_COMM:           // External file system routines
                        WriteMacInt16(r->a[7] + 14, ExtFSComm(ReadMacInt16(r->a[7] + 12), ReadMacInt32(r->a[7] + 8), ReadMacInt32(r->a[7] + 4)));
                        break;

                case M68K_EMUL_OP_EXTFS_HFS:
                        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)));
                        break;
#endif

                case M68K_EMUL_OP_BLOCK_MOVE:           // BlockMove() replacement
                        memmove(Mac2HostAddr(r->a[1]), Mac2HostAddr(r->a[0]), r->d[0]);
                        break;

                default:
                        printf("FATAL: EMUL_OP called with bogus opcode %08x\n", opcode);
                        printf("d0 %08lx d1 %08lx d2 %08lx d3 %08lx\n"
                                   "d4 %08lx d5 %08lx d6 %08lx d7 %08lx\n"
                                   "a0 %08lx a1 %08lx a2 %08lx a3 %08lx\n"
                                   "a4 %08lx a5 %08lx a6 %08lx a7 %08lx\n"
                                   "sr %04x\n",
                                   r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7],
                                   r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7],
                                   r->sr);
#if ENABLE_MON
                        char *arg[2] = {"rmon", NULL};
                        mon(1, arg);
#endif
                        QuitEmulator();
                        break;
        }
}
Revision:	1.13
Committed:	2000-04-10T18:52:21Z (24 years, 1 month ago) by cebix
Branch:	MAIN
Changes since 1.12:	+1 -1 lines
Log Message:	- updated copyright info: 1999->2000
#	User	Rev	Content
1	cebix	1.1	/*
2			* emul_op.cpp - 68k opcodes for ROM patches
3			*
4	cebix	1.13	* Basilisk II (C) 1997-2000 Christian Bauer
5	cebix	1.1	*
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	cebix	1.4	#include "extfs.h"
43	cebix	1.1	#include "emul_op.h"
44
45	cebix	1.8	#if ENABLE_MON
46			#include "mon.h"
47			#endif
48
49	cebix	1.1	#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 %08lx d1 %08lx d2 %08lx d3 %08lx\n"
64			"d4 %08lx d5 %08lx d6 %08lx d7 %08lx\n"
65			"a0 %08lx a1 %08lx a2 %08lx a3 %08lx\n"
66			"a4 %08lx a5 %08lx a6 %08lx a7 %08lx\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	cebix	1.8	#if ENABLE_MON
72	cebix	1.9	char *arg[2] = {"rmon", NULL};
73	cebix	1.8	mon(1, arg);
74			#endif
75	cebix	1.1	QuitEmulator();
76			break;
77			}
78
79			case M68K_EMUL_OP_SHUTDOWN: // Quit emulator
80			QuitEmulator();
81			break;
82
83			case M68K_EMUL_OP_RESET: { // MacOS reset
84			D(bug("* RESET *\n"));
85			TimerReset();
86			EtherReset();
87
88			// Create BootGlobs at top of memory
89	cebix	1.12	Mac_memset(RAMBaseMac + RAMSize - 4096, 0, 4096);
90	cebix	1.1	uint32 boot_globs = RAMBaseMac + RAMSize - 0x1c;
91			WriteMacInt32(boot_globs + 0x00, RAMBaseMac); // First RAM bank
92			WriteMacInt32(boot_globs + 0x04, RAMSize);
93			WriteMacInt32(boot_globs + 0x08, 0xffffffff); // End of bank table
94			WriteMacInt32(boot_globs + 0x0c, 0);
95
96			// Setup registers for boot routine
97			r->d[0] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x18); // AddrMapFlags
98			r->d[1] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x1c); // UnivROMFlags
99			r->d[2] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x10); // HWCfgFlags/IDs
100			if (FPUType)
101			r->d[2] \|= 0x10000000; // Set FPU flag if FPU present
102			else
103			r->d[2] &= 0xefffffff; // Clear FPU flag if no FPU present
104			r->a[0] = ROMBaseMac + UniversalInfo + ReadMacInt32(ROMBaseMac + UniversalInfo);// AddrMap
105			r->a[1] = ROMBaseMac + UniversalInfo; // UniversalInfo
106			r->a[6] = boot_globs; // BootGlobs
107			r->a[7] = RAMBaseMac + 0x10000; // Boot stack
108			break;
109			}
110
111			case M68K_EMUL_OP_CLKNOMEM: { // Clock/PRAM operations
112			bool is_read = r->d[1] & 0x80;
113			if ((r->d[1] & 0x78) == 0x38) {
114			// XPRAM
115			uint8 reg = (r->d[1] << 5) & 0xe0 \| (r->d[1] >> 10) & 0x1f;
116			if (is_read) {
117			r->d[2] = XPRAM[reg];
118			bool localtalk = !(XPRAM[0xe0] \|\| XPRAM[0xe1]); // LocalTalk enabled?
119			switch (reg) {
120			case 0x08:
121			if (ROMVersion != ROM_VERSION_32)
122			r->d[2] &= 0xf8;
123			break;
124			case 0x8a:
125			r->d[2] \|= 0x05; // 32bit mode is always enabled
126			break;
127			case 0xe0: // Disable LocalTalk (use EtherTalk instead)
128			if (localtalk)
129			r->d[2] = 0x00;
130			break;
131			case 0xe1:
132			if (localtalk)
133			r->d[2] = 0xf1;
134			break;
135			case 0xe2:
136			if (localtalk)
137			r->d[2] = 0x00;
138			break;
139			case 0xe3:
140			if (localtalk)
141			r->d[2] = 0x0a;
142			break;
143			}
144			D(bug("Read XPRAM %02x->%02lx\n", reg, r->d[2]));
145			} else {
146			D(bug("Write XPRAM %02x<-%02lx\n", reg, r->d[2] & 0xff));
147			if (reg == 0x8a && !TwentyFourBitAddressing)
148			r->d[2] \|= 0x05; // 32bit mode is always enabled if possible
149			XPRAM[reg] = r->d[2];
150			}
151			} else {
152			// PRAM, RTC and other clock registers
153			uint8 reg = (r->d[1] >> 2) & 0x1f;
154			if (reg >= 0x10 \|\| (reg >= 0x08 && reg < 0x0c)) {
155			if (is_read) {
156			r->d[2] = XPRAM[reg];
157			D(bug("Read XPRAM %02x->%02x\n", reg, XPRAM[reg]));
158			} else {
159			D(bug("Write PRAM %02x<-%02lx\n", reg, r->d[2]));
160			XPRAM[reg] = r->d[2];
161			}
162			} else if (reg < 0x08 && is_read) {
163			uint32 t = TimerDateTime();
164	cebix	1.2	uint8 b = t;
165	cebix	1.1	switch (reg & 3) {
166			case 1: b = t >> 8; break;
167			case 2: b = t >> 16; break;
168			case 3: b = t >> 24; break;
169			}
170			r->d[2] = b;
171			} else
172			D(bug("RTC %s op %d, d1 %08lx d2 %08lx\n", is_read ? "read" : "write", reg, r->d[1], r->d[2]));
173			}
174			r->d[0] = 0;
175			r->d[1] = r->d[2];
176			break;
177			}
178
179			case M68K_EMUL_OP_READ_XPRAM: // Read from XPRAM (ROM10/11)
180			D(bug("Read XPRAM %02lx\n", r->d[1]));
181			r->d[1] = XPRAM[r->d[1] & 0xff];
182			break;
183
184			case M68K_EMUL_OP_READ_XPRAM2: // Read from XPRAM (ROM15)
185			D(bug("Read XPRAM %02lx\n", r->d[0]));
186			r->d[0] = XPRAM[r->d[0] & 0xff];
187			break;
188
189			case M68K_EMUL_OP_PATCH_BOOT_GLOBS: // Patch BootGlobs at startup
190			D(bug("Patch BootGlobs\n"));
191			WriteMacInt32(r->a[4] - 20, RAMBaseMac + RAMSize); // MemTop
192			WriteMacInt8(r->a[4] - 26, 0); // No MMU
193			WriteMacInt8(r->a[4] - 25, ReadMacInt8(r->a[4] - 25) \| 1); // No MMU
194			r->a[6] = RAMBaseMac + RAMSize;
195			break;
196
197			case M68K_EMUL_OP_FIX_BOOTSTACK: // Set boot stack to 3/4 of RAM (7.5)
198			D(bug("Fix boot stack\n"));
199			r->a[1] = RAMBaseMac + RAMSize * 3 / 4;
200			break;
201
202			case M68K_EMUL_OP_FIX_MEMSIZE: { // Set correct logical and physical memory size
203			D(bug("Fix MemSize\n"));
204			uint32 diff = ReadMacInt32(0x1ef8) - ReadMacInt32(0x1ef4); // Difference between logical and physical size
205			WriteMacInt32(0x1ef8, RAMSize); // Physical RAM size
206			WriteMacInt32(0x1ef4, RAMSize - diff); // Logical RAM size
207			break;
208			}
209
210			case M68K_EMUL_OP_ADBOP: // ADBOp() replacement
211			ADBOp(r->d[0], Mac2HostAddr(ReadMacInt32(r->a[0])));
212			break;
213
214			case M68K_EMUL_OP_INSTIME: // InsTime() replacement
215			r->d[0] = InsTime(r->a[0], r->d[1]);
216			break;
217
218			case M68K_EMUL_OP_RMVTIME: // RmvTime() replacement
219			r->d[0] = RmvTime(r->a[0]);
220			break;
221
222			case M68K_EMUL_OP_PRIMETIME: // PrimeTime() replacement
223			r->d[0] = PrimeTime(r->a[0], r->d[0]);
224			break;
225
226			case M68K_EMUL_OP_MICROSECONDS: // Microseconds() replacement
227			Microseconds(r->a[0], r->d[0]);
228			break;
229
230			case M68K_EMUL_OP_INSTALL_DRIVERS: {// Patch to install our own drivers during startup
231			// Install drivers
232			D(bug("InstallDrivers\n"));
233			InstallDrivers(r->a[0]);
234
235			// Install PutScrap() patch
236			M68kRegisters r;
237			r.d[0] = 0xa9fe;
238			r.a[0] = PutScrapPatch;
239			Execute68kTrap(0xa647, &r); // SetToolTrap()
240
241			// Setup fake ASC registers
242			if (ROMVersion == ROM_VERSION_32) {
243			r.d[0] = 0x1000;
244			Execute68kTrap(0xa71e, &r); // NewPtrSysClear()
245			uint32 asc_regs = r.a[0];
246			D(bug("ASC registers at %08lx\n", asc_regs));
247			WriteMacInt8(asc_regs + 0x800, 0x0f); // Set ASC version number
248			WriteMacInt32(0xcc0, asc_regs); // Set ASCBase
249			}
250			break;
251			}
252
253			case M68K_EMUL_OP_SERD: // Install serial drivers
254			D(bug("InstallSERD\n"));
255			InstallSERD();
256			break;
257
258			case M68K_EMUL_OP_SONY_OPEN: // Floppy driver functions
259			r->d[0] = SonyOpen(r->a[0], r->a[1]);
260			break;
261
262			case M68K_EMUL_OP_SONY_PRIME:
263			r->d[0] = SonyPrime(r->a[0], r->a[1]);
264			break;
265
266			case M68K_EMUL_OP_SONY_CONTROL:
267			r->d[0] = SonyControl(r->a[0], r->a[1]);
268			break;
269
270			case M68K_EMUL_OP_SONY_STATUS:
271			r->d[0] = SonyStatus(r->a[0], r->a[1]);
272			break;
273
274			case M68K_EMUL_OP_DISK_OPEN: // Disk driver functions
275			r->d[0] = DiskOpen(r->a[0], r->a[1]);
276			break;
277
278			case M68K_EMUL_OP_DISK_PRIME:
279			r->d[0] = DiskPrime(r->a[0], r->a[1]);
280			break;
281
282			case M68K_EMUL_OP_DISK_CONTROL:
283			r->d[0] = DiskControl(r->a[0], r->a[1]);
284			break;
285
286			case M68K_EMUL_OP_DISK_STATUS:
287			r->d[0] = DiskStatus(r->a[0], r->a[1]);
288			break;
289
290			case M68K_EMUL_OP_CDROM_OPEN: // CD-ROM driver functions
291			r->d[0] = CDROMOpen(r->a[0], r->a[1]);
292			break;
293
294			case M68K_EMUL_OP_CDROM_PRIME:
295			r->d[0] = CDROMPrime(r->a[0], r->a[1]);
296			break;
297
298			case M68K_EMUL_OP_CDROM_CONTROL:
299			r->d[0] = CDROMControl(r->a[0], r->a[1]);
300			break;
301
302			case M68K_EMUL_OP_CDROM_STATUS:
303			r->d[0] = CDROMStatus(r->a[0], r->a[1]);
304			break;
305
306			case M68K_EMUL_OP_VIDEO_OPEN: // Video driver functions
307	cebix	1.5	r->d[0] = VideoDriverOpen(r->a[0], r->a[1]);
308	cebix	1.1	break;
309
310			case M68K_EMUL_OP_VIDEO_CONTROL:
311	cebix	1.5	r->d[0] = VideoDriverControl(r->a[0], r->a[1]);
312	cebix	1.1	break;
313
314			case M68K_EMUL_OP_VIDEO_STATUS:
315	cebix	1.5	r->d[0] = VideoDriverStatus(r->a[0], r->a[1]);
316	cebix	1.1	break;
317
318			case M68K_EMUL_OP_SERIAL_OPEN: // Serial driver functions
319			r->d[0] = SerialOpen(r->a[0], r->a[1], r->d[0]);
320			break;
321
322			case M68K_EMUL_OP_SERIAL_PRIME:
323			r->d[0] = SerialPrime(r->a[0], r->a[1], r->d[0]);
324			break;
325
326			case M68K_EMUL_OP_SERIAL_CONTROL:
327			r->d[0] = SerialControl(r->a[0], r->a[1], r->d[0]);
328			break;
329
330			case M68K_EMUL_OP_SERIAL_STATUS:
331			r->d[0] = SerialStatus(r->a[0], r->a[1], r->d[0]);
332			break;
333
334			case M68K_EMUL_OP_SERIAL_CLOSE:
335			r->d[0] = SerialClose(r->a[0], r->a[1], r->d[0]);
336			break;
337
338			case M68K_EMUL_OP_ETHER_OPEN: // Ethernet driver functions
339			r->d[0] = EtherOpen(r->a[0], r->a[1]);
340			break;
341
342			case M68K_EMUL_OP_ETHER_CONTROL:
343			r->d[0] = EtherControl(r->a[0], r->a[1]);
344			break;
345
346			case M68K_EMUL_OP_ETHER_READ_PACKET:
347			EtherReadPacket((uint8 **)&r->a[0], r->a[3], r->d[3], r->d[1]);
348			break;
349
350			case M68K_EMUL_OP_SCSI_DISPATCH: { // SCSIDispatch() replacement
351			uint32 ret = ReadMacInt32(r->a[7]); // Get return address
352			uint16 sel = ReadMacInt16(r->a[7] + 4); // Get selector
353			r->a[7] += 6;
354			int stack = 0;
355			switch (sel) {
356			case 0: // SCSIReset
357			WriteMacInt16(r->a[7], SCSIReset());
358			stack = 0;
359			break;
360			case 1: // SCSIGet
361			WriteMacInt16(r->a[7], SCSIGet());
362			stack = 0;
363			break;
364			case 2: // SCSISelect
365			case 11: // SCSISelAtn
366			WriteMacInt16(r->a[7] + 2, SCSISelect(ReadMacInt16(r->a[7]) & 0xff));
367			stack = 2;
368			break;
369			case 3: // SCSICmd
370			WriteMacInt16(r->a[7] + 6, SCSICmd(ReadMacInt16(r->a[7]), Mac2HostAddr(ReadMacInt32(r->a[7] + 2))));
371			stack = 6;
372			break;
373			case 4: // SCSIComplete
374			WriteMacInt16(r->a[7] + 12, SCSIComplete(ReadMacInt32(r->a[7]), ReadMacInt32(r->a[7] + 4), ReadMacInt32(r->a[7] + 8)));
375			stack = 12;
376			break;
377			case 5: // SCSIRead
378			case 8: // SCSIRBlind
379			WriteMacInt16(r->a[7] + 4, SCSIRead(ReadMacInt32(r->a[7])));
380			stack = 4;
381			break;
382			case 6: // SCSIWrite
383			case 9: // SCSIWBlind
384			WriteMacInt16(r->a[7] + 4, SCSIWrite(ReadMacInt32(r->a[7])));
385			stack = 4;
386			break;
387			case 10: // SCSIStat
388			WriteMacInt16(r->a[7], SCSIStat());
389			stack = 0;
390			break;
391			case 12: // SCSIMsgIn
392			WriteMacInt16(r->a[7] + 4, 0);
393			stack = 4;
394			break;
395			case 13: // SCSIMsgOut
396			WriteMacInt16(r->a[7] + 2, 0);
397			stack = 2;
398			break;
399			case 14: // SCSIMgrBusy
400			WriteMacInt16(r->a[7], SCSIMgrBusy());
401			stack = 0;
402			break;
403			default:
404			printf("FATAL: SCSIDispatch(%d): illegal selector\n", sel);
405			QuitEmulator();
406			break;
407			}
408			r->a[0] = ret; // "rtd" emulation, a0 = return address, a1 = new stack pointer
409			r->a[1] = r->a[7] + stack;
410			break;
411			}
412
413			case M68K_EMUL_OP_IRQ: // Level 1 interrupt
414			r->d[0] = 0;
415			if (InterruptFlags & INTFLAG_60HZ) {
416			ClearInterruptFlag(INTFLAG_60HZ);
417			if (HasMacStarted()) {
418
419	cebix	1.3	// Mac has started, execute all 60Hz interrupt functions
420	cebix	1.1	ADBInterrupt();
421			TimerInterrupt();
422			VideoInterrupt();
423	cebix	1.3	SonyInterrupt();
424			DiskInterrupt();
425			CDROMInterrupt();
426	cebix	1.1
427			// Call DoVBLTask(0)
428			if (ROMVersion == ROM_VERSION_32) {
429			M68kRegisters r2;
430			r2.d[0] = 0;
431			Execute68kTrap(0xa072, &r2);
432			}
433
434			r->d[0] = 1; // Flag: 68k interrupt routine executes VBLTasks etc.
435			}
436			}
437			if (InterruptFlags & INTFLAG_SERIAL) {
438			ClearInterruptFlag(INTFLAG_SERIAL);
439			SerialInterrupt();
440			}
441			if (InterruptFlags & INTFLAG_ETHER) {
442			ClearInterruptFlag(INTFLAG_ETHER);
443			EtherInterrupt();
444			}
445			if (InterruptFlags & INTFLAG_AUDIO) {
446			ClearInterruptFlag(INTFLAG_AUDIO);
447			AudioInterrupt();
448			}
449			break;
450
451			case M68K_EMUL_OP_PUT_SCRAP: { // PutScrap() patch
452			void *scrap = Mac2HostAddr(ReadMacInt32(r->a[7] + 4));
453			uint32 type = ReadMacInt32(r->a[7] + 8);
454			int32 length = ReadMacInt32(r->a[7] + 12);
455			PutScrap(type, scrap, length);
456			break;
457			}
458
459			case M68K_EMUL_OP_CHECKLOAD: { // vCheckLoad() patch (resource loader)
460			uint32 type = r->d[1];
461			int16 id = ReadMacInt16(r->a[2]);
462			if (r->a[0] == 0)
463			break;
464			uint32 adr = ReadMacInt32(r->a[0]);
465			if (adr == 0)
466			break;
467			uint8 *p = Mac2HostAddr(adr);
468			uint32 size = ReadMacInt32(adr - 8) & 0xffffff;
469			CheckLoad(type, id, p, size);
470			break;
471			}
472
473			case M68K_EMUL_OP_AUDIO: // Audio component dispatch function
474			r->d[0] = AudioDispatch(r->a[3], r->a[4]);
475	cebix	1.4	break;
476
477	cebix	1.6	#if SUPPORTS_EXTFS
478	cebix	1.4	case M68K_EMUL_OP_EXTFS_COMM: // External file system routines
479			WriteMacInt16(r->a[7] + 14, ExtFSComm(ReadMacInt16(r->a[7] + 12), ReadMacInt32(r->a[7] + 8), ReadMacInt32(r->a[7] + 4)));
480			break;
481
482			case M68K_EMUL_OP_EXTFS_HFS:
483			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)));
484	cebix	1.1	break;
485	cebix	1.6	#endif
486	cebix	1.1
487	cebix	1.7	case M68K_EMUL_OP_BLOCK_MOVE: // BlockMove() replacement
488			memmove(Mac2HostAddr(r->a[1]), Mac2HostAddr(r->a[0]), r->d[0]);
489			break;
490
491	cebix	1.1	default:
492			printf("FATAL: EMUL_OP called with bogus opcode %08x\n", opcode);
493			printf("d0 %08lx d1 %08lx d2 %08lx d3 %08lx\n"
494			"d4 %08lx d5 %08lx d6 %08lx d7 %08lx\n"
495			"a0 %08lx a1 %08lx a2 %08lx a3 %08lx\n"
496			"a4 %08lx a5 %08lx a6 %08lx a7 %08lx\n"
497			"sr %04x\n",
498			r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7],
499			r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7],
500			r->sr);
501	cebix	1.9	#if ENABLE_MON
502			char *arg[2] = {"rmon", NULL};
503			mon(1, arg);
504			#endif
505	cebix	1.1	QuitEmulator();
506			break;
507			}
508			}