mirror of
https://github.com/kanjitalk755/macemu.git
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fully native (no cygwin dep) version of main_windows.cpp
This commit is contained in:
gbeauche
parent
ffcf51b99d
commit
08a15ff00b
694
BasiliskII/src/Windows/main_windows.cpp
Executable file
694
BasiliskII/src/Windows/main_windows.cpp
Executable file
@ -0,0 +1,694 @@
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/*
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* main_windows.cpp - Startup code for Windows
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*
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* Basilisk II (C) 1997-2004 Christian Bauer
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*
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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 "sysdeps.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <errno.h>
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#include <SDL.h>
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#include <SDL_mutex.h>
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#include <SDL_thread.h>
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#include <string>
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using std::string;
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#include "cpu_emulation.h"
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#include "sys.h"
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#include "rom_patches.h"
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#include "xpram.h"
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#include "timer.h"
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#include "video.h"
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#include "emul_op.h"
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#include "prefs.h"
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#include "prefs_editor.h"
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#include "macos_util.h"
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#include "user_strings.h"
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#include "version.h"
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#include "main.h"
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#include "vm_alloc.h"
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#include "sigsegv.h"
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#if USE_JIT
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extern void flush_icache_range(uint32 start, uint32 size); // from compemu_support.cpp
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#endif
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#ifdef ENABLE_MON
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# include "mon.h"
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#endif
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#define DEBUG 0
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#include "debug.h"
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// Constants
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const char ROM_FILE_NAME[] = "ROM";
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const int SCRATCH_MEM_SIZE = 0x10000; // Size of scratch memory area
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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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bool ThirtyThreeBitAddressing = false;
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// Global variables
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static uint8 last_xpram[XPRAM_SIZE]; // Buffer for monitoring XPRAM changes
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static bool xpram_thread_active = false; // Flag: XPRAM watchdog installed
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static volatile bool xpram_thread_cancel = false; // Flag: Cancel XPRAM thread
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static SDL_Thread *xpram_thread = NULL; // XPRAM watchdog
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static bool tick_thread_active = false; // Flag: 60Hz thread installed
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static volatile bool tick_thread_cancel = false; // Flag: Cancel 60Hz thread
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static SDL_Thread *tick_thread; // 60Hz thread
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static SDL_mutex *intflag_lock = NULL; // Mutex to protect InterruptFlags
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#define LOCK_INTFLAGS SDL_LockMutex(intflag_lock)
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#define UNLOCK_INTFLAGS SDL_UnlockMutex(intflag_lock)
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#if USE_SCRATCHMEM_SUBTERFUGE
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uint8 *ScratchMem = NULL; // Scratch memory for Mac ROM writes
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#endif
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#if REAL_ADDRESSING
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static bool lm_area_mapped = false; // Flag: Low Memory area mmap()ped
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#endif
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// Prototypes
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static int xpram_func(void *arg);
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static int tick_func(void *arg);
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static void one_tick(...);
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/*
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* Ersatz functions
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*/
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extern "C" {
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#ifndef HAVE_STRDUP
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char *strdup(const char *s)
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{
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char *n = (char *)malloc(strlen(s) + 1);
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strcpy(n, s);
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return n;
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}
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#endif
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}
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/*
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* Map memory that can be accessed from the Mac side
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*/
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void *vm_acquire_mac(size_t size)
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{
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void *m = vm_acquire(size, VM_MAP_DEFAULT | VM_MAP_33BIT);
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if (m == NULL) {
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ThirtyThreeBitAddressing = false;
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m = vm_acquire(size);
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}
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return m;
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}
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/*
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* SIGSEGV handler
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*/
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static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
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{
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#if ENABLE_VOSF
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// Handle screen fault
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extern bool Screen_fault_handler(sigsegv_address_t, sigsegv_address_t);
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if (Screen_fault_handler(fault_address, fault_instruction))
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return SIGSEGV_RETURN_SUCCESS;
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#endif
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#ifdef HAVE_SIGSEGV_SKIP_INSTRUCTION
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// Ignore writes to ROM
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if (((uintptr)fault_address - (uintptr)ROMBaseHost) < ROMSize)
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return SIGSEGV_RETURN_SKIP_INSTRUCTION;
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// Ignore all other faults, if requested
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if (PrefsFindBool("ignoresegv"))
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return SIGSEGV_RETURN_SKIP_INSTRUCTION;
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#endif
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return SIGSEGV_RETURN_FAILURE;
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}
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/*
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* Dump state when everything went wrong after a SEGV
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*/
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static void sigsegv_dump_state(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
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{
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fprintf(stderr, "Caught SIGSEGV at address %p", fault_address);
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if (fault_instruction != SIGSEGV_INVALID_PC)
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fprintf(stderr, " [IP=%p]", fault_instruction);
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fprintf(stderr, "\n");
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uaecptr nextpc;
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extern void m68k_dumpstate(uaecptr *nextpc);
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m68k_dumpstate(&nextpc);
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#if USE_JIT && JIT_DEBUG
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extern void compiler_dumpstate(void);
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compiler_dumpstate();
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#endif
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VideoQuitFullScreen();
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#ifdef ENABLE_MON
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char *arg[4] = {"mon", "-m", "-r", NULL};
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mon(3, arg);
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QuitEmulator();
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#endif
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}
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/*
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* Main program
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*/
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static void usage(const char *prg_name)
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{
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printf(
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"Usage: %s [OPTION...]\n"
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"\nUnix options:\n"
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" --config FILE\n read/write configuration from/to FILE\n"
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" --display STRING\n X display to use\n"
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" --break ADDRESS\n set ROM breakpoint\n"
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" --rominfo\n dump ROM information\n", prg_name
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);
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LoadPrefs(); // read the prefs file so PrefsPrintUsage() will print the correct default values
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PrefsPrintUsage();
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exit(0);
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}
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int main(int argc, char **argv)
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{
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char str[256];
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// Initialize variables
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RAMBaseHost = NULL;
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ROMBaseHost = NULL;
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srand(time(NULL));
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tzset();
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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));
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// Parse command line arguments
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for (int i=1; i<argc; i++) {
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if (strcmp(argv[i], "--help") == 0) {
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usage(argv[0]);
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} else if (strcmp(argv[i], "--break") == 0) {
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argv[i++] = NULL;
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if (i < argc) {
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ROMBreakpoint = strtol(argv[i], NULL, 0);
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argv[i] = NULL;
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}
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} else if (strcmp(argv[i], "--config") == 0) {
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argv[i++] = NULL;
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if (i < argc) {
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extern string UserPrefsPath; // from prefs_unix.cpp
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UserPrefsPath = argv[i];
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argv[i] = NULL;
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}
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} else if (strcmp(argv[i], "--rominfo") == 0) {
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argv[i] = NULL;
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PrintROMInfo = true;
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}
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}
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// Remove processed arguments
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for (int i=1; i<argc; i++) {
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int k;
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for (k=i; k<argc; k++)
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if (argv[k] != NULL)
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break;
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if (k > i) {
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k -= i;
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for (int j=i+k; j<argc; j++)
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argv[j-k] = argv[j];
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argc -= k;
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}
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}
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// Read preferences
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PrefsInit(argc, argv);
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// Any command line arguments left?
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for (int i=1; i<argc; i++) {
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if (argv[i][0] == '-') {
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fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
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usage(argv[0]);
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}
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}
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// Initialize SDL system
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int sdl_flags = 0;
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#ifdef USE_SDL_VIDEO
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sdl_flags |= SDL_INIT_VIDEO;
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#endif
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#ifdef USE_SDL_AUDIO
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sdl_flags |= SDL_INIT_AUDIO;
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#endif
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assert(sdl_flags != 0);
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if (SDL_Init(sdl_flags) == -1) {
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char str[256];
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sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
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ErrorAlert(str);
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QuitEmulator();
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}
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atexit(SDL_Quit);
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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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// Install the handler for SIGSEGV
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if (!sigsegv_install_handler(sigsegv_handler)) {
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sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
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ErrorAlert(str);
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QuitEmulator();
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}
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// Register dump state function when we got mad after a segfault
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sigsegv_set_dump_state(sigsegv_dump_state);
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// Read RAM size
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RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary
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if (RAMSize < 1024*1024) {
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WarningAlert(GetString(STR_SMALL_RAM_WARN));
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RAMSize = 1024*1024;
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}
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// Initialize VM system
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vm_init();
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// Create areas for Mac RAM and ROM
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#ifdef USE_33BIT_ADDRESSING
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// Speculatively enables 33-bit addressing
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ThirtyThreeBitAddressing = true;
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#endif
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RAMBaseHost = (uint8 *)vm_acquire_mac(RAMSize);
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ROMBaseHost = (uint8 *)vm_acquire_mac(0x100000);
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if (RAMBaseHost == VM_MAP_FAILED || ROMBaseHost == VM_MAP_FAILED) {
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ErrorAlert(STR_NO_MEM_ERR);
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QuitEmulator();
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}
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#if USE_SCRATCHMEM_SUBTERFUGE
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// Allocate scratch memory
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ScratchMem = (uint8 *)vm_acquire(SCRATCH_MEM_SIZE);
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if (ScratchMem == VM_MAP_FAILED) {
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ErrorAlert(STR_NO_MEM_ERR);
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QuitEmulator();
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}
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ScratchMem += SCRATCH_MEM_SIZE/2; // ScratchMem points to middle of block
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#endif
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#if DIRECT_ADDRESSING
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// RAMBaseMac shall always be zero
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MEMBaseDiff = (uintptr)RAMBaseHost;
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RAMBaseMac = 0;
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ROMBaseMac = Host2MacAddr(ROMBaseHost);
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#endif
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D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac));
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D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac));
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// Get rom file path from preferences
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const char *rom_path = PrefsFindString("rom");
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// Load Mac ROM
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HANDLE rom_fh = CreateFile(rom_path ? rom_path : ROM_FILE_NAME,
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GENERIC_READ,
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0, NULL,
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OPEN_EXISTING,
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FILE_ATTRIBUTE_NORMAL,
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NULL);
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if (rom_fh == INVALID_HANDLE_VALUE) {
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ErrorAlert(STR_NO_ROM_FILE_ERR);
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QuitEmulator();
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}
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printf(GetString(STR_READING_ROM_FILE));
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ROMSize = GetFileSize(rom_fh, NULL);
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if (ROMSize != 64*1024 && ROMSize != 128*1024 && ROMSize != 256*1024 && ROMSize != 512*1024 && ROMSize != 1024*1024) {
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ErrorAlert(STR_ROM_SIZE_ERR);
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CloseHandle(rom_fh);
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QuitEmulator();
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}
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DWORD bytes_read;
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if (ReadFile(rom_fh, ROMBaseHost, ROMSize, &bytes_read, NULL) == 0 || bytes_read != ROMSize) {
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ErrorAlert(STR_ROM_FILE_READ_ERR);
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CloseHandle(rom_fh);
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QuitEmulator();
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}
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// Initialize native timers
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timer_init();
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// Initialize everything
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if (!InitAll())
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QuitEmulator();
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D(bug("Initialization complete\n"));
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// SDL threads available, start 60Hz thread
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tick_thread_active = ((tick_thread = SDL_CreateThread(tick_func, NULL)) != NULL);
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if (!tick_thread_active) {
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sprintf(str, GetString(STR_TICK_THREAD_ERR), strerror(errno));
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ErrorAlert(str);
|
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QuitEmulator();
|
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}
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D(bug("60Hz thread started\n"));
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// Start XPRAM watchdog thread
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memcpy(last_xpram, XPRAM, XPRAM_SIZE);
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xpram_thread_active = ((xpram_thread = SDL_CreateThread(xpram_func, NULL)) != NULL);
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D(bug("XPRAM thread started\n"));
|
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|
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// Start 68k and jump to ROM boot routine
|
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D(bug("Starting emulation...\n"));
|
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Start680x0();
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QuitEmulator();
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return 0;
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}
|
||||
|
||||
|
||||
/*
|
||||
* Quit emulator
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||||
*/
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||||
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||||
void QuitEmulator(void)
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||||
{
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D(bug("QuitEmulator\n"));
|
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|
||||
// Exit 680x0 emulation
|
||||
Exit680x0();
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||||
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// Stop 60Hz thread
|
||||
if (tick_thread_active) {
|
||||
tick_thread_cancel = true;
|
||||
SDL_WaitThread(tick_thread, NULL);
|
||||
}
|
||||
|
||||
// Stop XPRAM watchdog thread
|
||||
if (xpram_thread_active) {
|
||||
xpram_thread_cancel = true;
|
||||
SDL_WaitThread(xpram_thread, NULL);
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||||
}
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||||
|
||||
// Deinitialize everything
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||||
ExitAll();
|
||||
|
||||
// Free ROM/RAM areas
|
||||
if (RAMBaseHost != VM_MAP_FAILED) {
|
||||
vm_release(RAMBaseHost, RAMSize);
|
||||
RAMBaseHost = NULL;
|
||||
}
|
||||
if (ROMBaseHost != VM_MAP_FAILED) {
|
||||
vm_release(ROMBaseHost, 0x100000);
|
||||
ROMBaseHost = NULL;
|
||||
}
|
||||
|
||||
#if USE_SCRATCHMEM_SUBTERFUGE
|
||||
// Delete scratch memory area
|
||||
if (ScratchMem != (uint8 *)VM_MAP_FAILED) {
|
||||
vm_release((void *)(ScratchMem - SCRATCH_MEM_SIZE/2), SCRATCH_MEM_SIZE);
|
||||
ScratchMem = NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
// Exit VM wrappers
|
||||
vm_exit();
|
||||
|
||||
// Exit system routines
|
||||
SysExit();
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||||
|
||||
// Exit preferences
|
||||
PrefsExit();
|
||||
|
||||
exit(0);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Code was patched, flush caches if neccessary (i.e. when using a real 680x0
|
||||
* or a dynamically recompiling emulator)
|
||||
*/
|
||||
|
||||
void FlushCodeCache(void *start, uint32 size)
|
||||
{
|
||||
#if USE_JIT
|
||||
if (UseJIT)
|
||||
flush_icache_range((uintptr)start, size);
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Mutexes
|
||||
*/
|
||||
|
||||
struct B2_mutex {
|
||||
B2_mutex() { m = SDL_CreateMutex(); }
|
||||
~B2_mutex() { if (m) SDL_DestroyMutex(m); }
|
||||
SDL_mutex *m;
|
||||
};
|
||||
|
||||
B2_mutex *B2_create_mutex(void)
|
||||
{
|
||||
return new B2_mutex;
|
||||
}
|
||||
|
||||
void B2_lock_mutex(B2_mutex *mutex)
|
||||
{
|
||||
if (mutex)
|
||||
SDL_LockMutex(mutex->m);
|
||||
}
|
||||
|
||||
void B2_unlock_mutex(B2_mutex *mutex)
|
||||
{
|
||||
if (mutex)
|
||||
SDL_UnlockMutex(mutex->m);
|
||||
}
|
||||
|
||||
void B2_delete_mutex(B2_mutex *mutex)
|
||||
{
|
||||
delete mutex;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Interrupt flags (must be handled atomically!)
|
||||
*/
|
||||
|
||||
uint32 InterruptFlags = 0;
|
||||
|
||||
void SetInterruptFlag(uint32 flag)
|
||||
{
|
||||
LOCK_INTFLAGS;
|
||||
InterruptFlags |= flag;
|
||||
UNLOCK_INTFLAGS;
|
||||
}
|
||||
|
||||
void ClearInterruptFlag(uint32 flag)
|
||||
{
|
||||
LOCK_INTFLAGS;
|
||||
InterruptFlags &= ~flag;
|
||||
UNLOCK_INTFLAGS;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* XPRAM watchdog thread (saves XPRAM every minute)
|
||||
*/
|
||||
|
||||
static void xpram_watchdog(void)
|
||||
{
|
||||
if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
|
||||
memcpy(last_xpram, XPRAM, XPRAM_SIZE);
|
||||
SaveXPRAM();
|
||||
}
|
||||
}
|
||||
|
||||
static int xpram_func(void *arg)
|
||||
{
|
||||
while (!xpram_thread_cancel) {
|
||||
for (int i=0; i<60 && !xpram_thread_cancel; i++)
|
||||
Delay_usec(999999); // Only wait 1 second so we quit promptly when xpram_thread_cancel becomes true
|
||||
xpram_watchdog();
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* 60Hz thread (really 60.15Hz)
|
||||
*/
|
||||
|
||||
static void one_second(void)
|
||||
{
|
||||
// Pseudo Mac 1Hz interrupt, update local time
|
||||
WriteMacInt32(0x20c, TimerDateTime());
|
||||
|
||||
SetInterruptFlag(INTFLAG_1HZ);
|
||||
TriggerInterrupt();
|
||||
}
|
||||
|
||||
static void one_tick(...)
|
||||
{
|
||||
static int tick_counter = 0;
|
||||
if (++tick_counter > 60) {
|
||||
tick_counter = 0;
|
||||
one_second();
|
||||
}
|
||||
|
||||
// Trigger 60Hz interrupt
|
||||
if (ROMVersion != ROM_VERSION_CLASSIC || HasMacStarted()) {
|
||||
SetInterruptFlag(INTFLAG_60HZ);
|
||||
TriggerInterrupt();
|
||||
}
|
||||
}
|
||||
|
||||
static int tick_func(void *arg)
|
||||
{
|
||||
uint64 start = GetTicks_usec();
|
||||
int64 ticks = 0;
|
||||
uint64 next = GetTicks_usec();
|
||||
while (!tick_thread_cancel) {
|
||||
one_tick();
|
||||
next += 16625;
|
||||
int64 delay = next - GetTicks_usec();
|
||||
if (delay > 0)
|
||||
Delay_usec(delay);
|
||||
else if (delay < -16625)
|
||||
next = GetTicks_usec();
|
||||
ticks++;
|
||||
}
|
||||
uint64 end = GetTicks_usec();
|
||||
D(bug("%Ld ticks in %Ld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Display alert
|
||||
*/
|
||||
|
||||
#ifdef ENABLE_GTK
|
||||
static void dl_destroyed(void)
|
||||
{
|
||||
gtk_main_quit();
|
||||
}
|
||||
|
||||
static void dl_quit(GtkWidget *dialog)
|
||||
{
|
||||
gtk_widget_destroy(dialog);
|
||||
}
|
||||
|
||||
void display_alert(int title_id, int prefix_id, int button_id, const char *text)
|
||||
{
|
||||
char str[256];
|
||||
sprintf(str, GetString(prefix_id), text);
|
||||
|
||||
GtkWidget *dialog = gtk_dialog_new();
|
||||
gtk_window_set_title(GTK_WINDOW(dialog), GetString(title_id));
|
||||
gtk_container_border_width(GTK_CONTAINER(dialog), 5);
|
||||
gtk_widget_set_uposition(GTK_WIDGET(dialog), 100, 150);
|
||||
gtk_signal_connect(GTK_OBJECT(dialog), "destroy", GTK_SIGNAL_FUNC(dl_destroyed), NULL);
|
||||
|
||||
GtkWidget *label = gtk_label_new(str);
|
||||
gtk_widget_show(label);
|
||||
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), label, TRUE, TRUE, 0);
|
||||
|
||||
GtkWidget *button = gtk_button_new_with_label(GetString(button_id));
|
||||
gtk_widget_show(button);
|
||||
gtk_signal_connect_object(GTK_OBJECT(button), "clicked", GTK_SIGNAL_FUNC(dl_quit), GTK_OBJECT(dialog));
|
||||
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, FALSE, FALSE, 0);
|
||||
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
|
||||
gtk_widget_grab_default(button);
|
||||
gtk_widget_show(dialog);
|
||||
|
||||
gtk_main();
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Display error alert
|
||||
*/
|
||||
|
||||
void ErrorAlert(const char *text)
|
||||
{
|
||||
#if 0
|
||||
// TODO: Windows message box
|
||||
if (PrefsFindBool("nogui")) {
|
||||
printf(GetString(STR_SHELL_ERROR_PREFIX), text);
|
||||
return;
|
||||
}
|
||||
VideoQuitFullScreen();
|
||||
display_alert(STR_ERROR_ALERT_TITLE, STR_GUI_ERROR_PREFIX, STR_QUIT_BUTTON, text);
|
||||
#else
|
||||
printf(GetString(STR_SHELL_ERROR_PREFIX), text);
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Display warning alert
|
||||
*/
|
||||
|
||||
void WarningAlert(const char *text)
|
||||
{
|
||||
#if 0
|
||||
// TODO: Windows message box
|
||||
if (PrefsFindBool("nogui")) {
|
||||
printf(GetString(STR_SHELL_WARNING_PREFIX), text);
|
||||
return;
|
||||
}
|
||||
display_alert(STR_WARNING_ALERT_TITLE, STR_GUI_WARNING_PREFIX, STR_OK_BUTTON, text);
|
||||
#else
|
||||
printf(GetString(STR_SHELL_WARNING_PREFIX), text);
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Display choice alert
|
||||
*/
|
||||
|
||||
bool ChoiceAlert(const char *text, const char *pos, const char *neg)
|
||||
{
|
||||
printf(GetString(STR_SHELL_WARNING_PREFIX), text);
|
||||
return false; //!!
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user