1 |
/* |
2 |
* main_unix.cpp - Startup code for Unix |
3 |
* |
4 |
* Basilisk II (C) 1997-2001 Christian Bauer |
5 |
* |
6 |
* 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 |
8 |
* the Free Software Foundation; either version 2 of the License, or |
9 |
* (at your option) any later version. |
10 |
* |
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* 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 |
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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 |
17 |
* 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 |
19 |
*/ |
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|
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#include "sysdeps.h" |
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|
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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 <X11/Xlib.h> |
28 |
|
29 |
#ifdef HAVE_PTHREADS |
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# include <pthread.h> |
31 |
#endif |
32 |
|
33 |
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
34 |
# include <sys/mman.h> |
35 |
#endif |
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|
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#if !EMULATED_68K && defined(__NetBSD__) |
38 |
# include <m68k/sync_icache.h> |
39 |
# include <m68k/frame.h> |
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# include <sys/param.h> |
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# include <sys/sysctl.h> |
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struct sigstate { |
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int ss_flags; |
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struct frame ss_frame; |
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struct fpframe ss_fpstate; |
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}; |
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# define SS_FPSTATE 0x02 |
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# define SS_USERREGS 0x04 |
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#endif |
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|
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#ifdef ENABLE_GTK |
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# include <gtk/gtk.h> |
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# include <gdk/gdk.h> |
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#endif |
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|
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#ifdef ENABLE_XF86_DGA |
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# include <X11/Xutil.h> |
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# include <X11/extensions/xf86dga.h> |
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#endif |
60 |
|
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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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|
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#ifdef ENABLE_MON |
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# include "mon.h" |
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#endif |
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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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|
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// Constants |
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const char ROM_FILE_NAME[] = "ROM"; |
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const int SIG_STACK_SIZE = SIGSTKSZ; // Size of signal stack |
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const int SCRATCH_MEM_SIZE = 0x10000; // Size of scratch memory area |
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|
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|
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#if !EMULATED_68K |
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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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#endif |
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|
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|
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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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|
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|
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// Global variables |
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char *x_display_name = NULL; // X11 display name |
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Display *x_display = NULL; // X11 display handle |
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|
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static int zero_fd = -1; // FD of /dev/zero |
112 |
static uint8 last_xpram[256]; // Buffer for monitoring XPRAM changes |
113 |
|
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#ifdef HAVE_PTHREADS |
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static pthread_t emul_thread; // Handle of MacOS emulation thread (main thread) |
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|
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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 pthread_t xpram_thread; // XPRAM watchdog |
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|
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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 pthread_t tick_thread; // 60Hz thread |
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static pthread_attr_t tick_thread_attr; // 60Hz thread attributes |
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|
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#if EMULATED_68K |
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static pthread_mutex_t intflag_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect InterruptFlags |
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#endif |
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#endif |
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|
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#if !EMULATED_68K |
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#define SIG_IRQ SIGUSR1 |
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static struct sigaction sigirq_sa; // Virtual 68k interrupt signal |
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static struct sigaction sigill_sa; // Illegal instruction |
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static void *sig_stack = NULL; // Stack for signal handlers |
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uint16 EmulatedSR; // Emulated bits of SR (supervisor bit and interrupt mask) |
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#endif |
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|
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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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|
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static struct sigaction timer_sa; // sigaction used for timer |
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|
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#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS) |
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#define SIG_TIMER SIGRTMIN |
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static timer_t timer; // 60Hz timer |
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#endif |
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|
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#ifdef ENABLE_MON |
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static struct sigaction sigint_sa; // sigaction for SIGINT handler |
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static void sigint_handler(...); |
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#endif |
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|
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#if REAL_ADDRESSING |
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static bool lm_area_mapped = false; // Flag: Low Memory area mmap()ped |
157 |
static bool memory_mapped_from_zero = false; // Flag: Could allocate RAM area from 0 |
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#endif |
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|
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#if REAL_ADDRESSING || DIRECT_ADDRESSING |
161 |
static uint32 mapped_ram_rom_size; // Total size of mmap()ed RAM/ROM area |
162 |
#endif |
163 |
|
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|
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// Prototypes |
166 |
static void *xpram_func(void *arg); |
167 |
static void *tick_func(void *arg); |
168 |
static void one_tick(...); |
169 |
#if !EMULATED_68K |
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static void sigirq_handler(int sig, int code, struct sigcontext *scp); |
171 |
static void sigill_handler(int sig, int code, struct sigcontext *scp); |
172 |
extern "C" void EmulOpTrampoline(void); |
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#endif |
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|
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|
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/* |
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* Ersatz functions |
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*/ |
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|
180 |
extern "C" { |
181 |
|
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#ifndef HAVE_STRDUP |
183 |
char *strdup(const char *s) |
184 |
{ |
185 |
char *n = (char *)malloc(strlen(s) + 1); |
186 |
strcpy(n, s); |
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return n; |
188 |
} |
189 |
#endif |
190 |
|
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} |
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|
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|
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/* |
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* Main program |
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*/ |
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|
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static void usage(const char *prg_name) |
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{ |
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printf("Usage: %s [OPTION...]\n", prg_name); |
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printf("\nUnix options:\n"); |
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printf(" --display STRING\n X display to use\n"); |
203 |
printf(" --break ADDRESS\n set ROM breakpoint\n"); |
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printf(" --rominfo\n dump ROM information\n"); |
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PrefsPrintUsage(); |
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exit(0); |
207 |
} |
208 |
|
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int main(int argc, char **argv) |
210 |
{ |
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char str[256]; |
212 |
|
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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)); |
217 |
tzset(); |
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|
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// Print some info |
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printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR); |
221 |
printf(" %s\n", GetString(STR_ABOUT_TEXT2)); |
222 |
|
223 |
#ifdef ENABLE_GTK |
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// Init GTK |
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gtk_set_locale(); |
226 |
gtk_init(&argc, &argv); |
227 |
x_display_name = gdk_get_display(); // gtk_init() handles and removes the "--display" argument |
228 |
#endif |
229 |
|
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// Read preferences |
231 |
PrefsInit(argc, argv); |
232 |
|
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// Parse command line arguments |
234 |
for (int i=1; i<argc; i++) { |
235 |
if (strcmp(argv[i], "--help") == 0) { |
236 |
usage(argv[0]); |
237 |
} else if (strcmp(argv[i], "--display") == 0) { |
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i++; |
239 |
if (i < argc) |
240 |
x_display_name = strdup(argv[i]); |
241 |
} else if (strcmp(argv[i], "--break") == 0) { |
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i++; |
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if (i < argc) |
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ROMBreakpoint = strtol(argv[i], NULL, 0); |
245 |
} else if (strcmp(argv[i], "--rominfo") == 0) { |
246 |
PrintROMInfo = true; |
247 |
} else if (argv[i][0] == '-') { |
248 |
fprintf(stderr, "Unrecognized option '%s'\n", argv[i]); |
249 |
usage(argv[0]); |
250 |
} |
251 |
} |
252 |
|
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// Open display |
254 |
x_display = XOpenDisplay(x_display_name); |
255 |
if (x_display == NULL) { |
256 |
char str[256]; |
257 |
sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name)); |
258 |
ErrorAlert(str); |
259 |
QuitEmulator(); |
260 |
} |
261 |
|
262 |
#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON) |
263 |
// Fork out, so we can return from fullscreen mode when things get ugly |
264 |
XF86DGAForkApp(DefaultScreen(x_display)); |
265 |
#endif |
266 |
|
267 |
// Init system routines |
268 |
SysInit(); |
269 |
|
270 |
// Show preferences editor |
271 |
if (!PrefsFindBool("nogui")) |
272 |
if (!PrefsEditor()) |
273 |
QuitEmulator(); |
274 |
|
275 |
// Open /dev/zero |
276 |
zero_fd = open("/dev/zero", O_RDWR); |
277 |
if (zero_fd < 0) { |
278 |
sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno)); |
279 |
ErrorAlert(str); |
280 |
QuitEmulator(); |
281 |
} |
282 |
|
283 |
// Read RAM size |
284 |
RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary |
285 |
if (RAMSize < 1024*1024) { |
286 |
WarningAlert(GetString(STR_SMALL_RAM_WARN)); |
287 |
RAMSize = 1024*1024; |
288 |
} |
289 |
|
290 |
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
291 |
const uint32 page_size = getpagesize(); |
292 |
const uint32 page_mask = page_size - 1; |
293 |
const uint32 aligned_ram_size = (RAMSize + page_mask) & ~page_mask; |
294 |
mapped_ram_rom_size = aligned_ram_size + 0x100000; |
295 |
#endif |
296 |
|
297 |
#if REAL_ADDRESSING |
298 |
// Try to allocate the complete address space from zero |
299 |
// gb-- the Solaris manpage about mmap(2) states that using MAP_FIXED |
300 |
// implies undefined behaviour for further use of sbrk(), malloc(), etc. |
301 |
// cebix-- on NetBSD/m68k, this causes a segfault |
302 |
#if defined(OS_solaris) || defined(OS_netbsd) |
303 |
// Anyway, it doesn't work... |
304 |
if (0) { |
305 |
#else |
306 |
if (mmap((caddr_t)0x0000, mapped_ram_rom_size, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) != MAP_FAILED) { |
307 |
#endif |
308 |
D(bug("Could allocate RAM and ROM from 0x0000\n")); |
309 |
memory_mapped_from_zero = true; |
310 |
} |
311 |
// Create Low Memory area (0x0000..0x2000) |
312 |
else if (mmap((char *)0x0000, 0x2000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) != MAP_FAILED) { |
313 |
D(bug("Could allocate the Low Memory globals\n")); |
314 |
lm_area_mapped = true; |
315 |
} |
316 |
// Exit on error |
317 |
else { |
318 |
sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno)); |
319 |
ErrorAlert(str); |
320 |
QuitEmulator(); |
321 |
} |
322 |
#endif |
323 |
|
324 |
#if USE_SCRATCHMEM_SUBTERFUGE |
325 |
// Allocate scratch memory |
326 |
ScratchMem = (uint8 *)malloc(SCRATCH_MEM_SIZE); |
327 |
if (ScratchMem == NULL) { |
328 |
ErrorAlert(GetString(STR_NO_MEM_ERR)); |
329 |
QuitEmulator(); |
330 |
} |
331 |
ScratchMem += SCRATCH_MEM_SIZE/2; // ScratchMem points to middle of block |
332 |
#endif |
333 |
|
334 |
// Create areas for Mac RAM and ROM |
335 |
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
336 |
// gb-- Overkill, needs to be cleaned up. Probably explode it for either |
337 |
// real or direct addressing mode. |
338 |
#if REAL_ADDRESSING |
339 |
if (memory_mapped_from_zero) { |
340 |
RAMBaseHost = (uint8 *)0; |
341 |
ROMBaseHost = RAMBaseHost + aligned_ram_size; |
342 |
} |
343 |
else |
344 |
#endif |
345 |
{ |
346 |
RAMBaseHost = (uint8 *)mmap(0, mapped_ram_rom_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, zero_fd, 0); |
347 |
if (RAMBaseHost == (uint8 *)MAP_FAILED) { |
348 |
ErrorAlert(GetString(STR_NO_MEM_ERR)); |
349 |
QuitEmulator(); |
350 |
} |
351 |
ROMBaseHost = RAMBaseHost + aligned_ram_size; |
352 |
} |
353 |
#else |
354 |
RAMBaseHost = (uint8 *)malloc(RAMSize); |
355 |
ROMBaseHost = (uint8 *)malloc(0x100000); |
356 |
if (RAMBaseHost == NULL || ROMBaseHost == NULL) { |
357 |
ErrorAlert(GetString(STR_NO_MEM_ERR)); |
358 |
QuitEmulator(); |
359 |
} |
360 |
#endif |
361 |
|
362 |
#if DIRECT_ADDRESSING |
363 |
// Initialize MEMBaseDiff now so that Host2MacAddr in the Video module |
364 |
// will return correct results |
365 |
RAMBaseMac = 0; |
366 |
ROMBaseMac = RAMBaseMac + aligned_ram_size; |
367 |
InitMEMBaseDiff(RAMBaseHost, RAMBaseMac); |
368 |
#endif |
369 |
#if REAL_ADDRESSING // && !EMULATED_68K |
370 |
RAMBaseMac = (uint32)RAMBaseHost; |
371 |
ROMBaseMac = (uint32)ROMBaseHost; |
372 |
#endif |
373 |
D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac)); |
374 |
D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac)); |
375 |
|
376 |
// Get rom file path from preferences |
377 |
const char *rom_path = PrefsFindString("rom"); |
378 |
|
379 |
// Load Mac ROM |
380 |
int rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY); |
381 |
if (rom_fd < 0) { |
382 |
ErrorAlert(GetString(STR_NO_ROM_FILE_ERR)); |
383 |
QuitEmulator(); |
384 |
} |
385 |
printf(GetString(STR_READING_ROM_FILE)); |
386 |
ROMSize = lseek(rom_fd, 0, SEEK_END); |
387 |
if (ROMSize != 64*1024 && ROMSize != 128*1024 && ROMSize != 256*1024 && ROMSize != 512*1024 && ROMSize != 1024*1024) { |
388 |
ErrorAlert(GetString(STR_ROM_SIZE_ERR)); |
389 |
close(rom_fd); |
390 |
QuitEmulator(); |
391 |
} |
392 |
lseek(rom_fd, 0, SEEK_SET); |
393 |
if (read(rom_fd, ROMBaseHost, ROMSize) != (ssize_t)ROMSize) { |
394 |
ErrorAlert(GetString(STR_ROM_FILE_READ_ERR)); |
395 |
close(rom_fd); |
396 |
QuitEmulator(); |
397 |
} |
398 |
|
399 |
#if !EMULATED_68K |
400 |
// Get CPU model |
401 |
int mib[2] = {CTL_HW, HW_MODEL}; |
402 |
char *model; |
403 |
size_t model_len; |
404 |
sysctl(mib, 2, NULL, &model_len, NULL, 0); |
405 |
model = (char *)malloc(model_len); |
406 |
sysctl(mib, 2, model, &model_len, NULL, 0); |
407 |
D(bug("Model: %s\n", model)); |
408 |
|
409 |
// Set CPU and FPU type |
410 |
CPUIs68060 = false; |
411 |
if (strstr(model, "020")) |
412 |
CPUType = 2; |
413 |
else if (strstr(model, "030")) |
414 |
CPUType = 3; |
415 |
else if (strstr(model, "040")) |
416 |
CPUType = 4; |
417 |
else if (strstr(model, "060")) { |
418 |
CPUType = 4; |
419 |
CPUIs68060 = true; |
420 |
} else { |
421 |
printf("WARNING: Cannot detect CPU type, assuming 68020\n"); |
422 |
CPUType = 2; |
423 |
} |
424 |
FPUType = 1; // NetBSD has an FPU emulation, so the FPU ought to be available at all times |
425 |
TwentyFourBitAddressing = false; |
426 |
#endif |
427 |
|
428 |
// Initialize everything |
429 |
if (!InitAll()) |
430 |
QuitEmulator(); |
431 |
D(bug("Initialization complete\n")); |
432 |
|
433 |
#ifdef HAVE_PTHREADS |
434 |
// Get handle of main thread |
435 |
emul_thread = pthread_self(); |
436 |
#endif |
437 |
|
438 |
#if !EMULATED_68K |
439 |
// (Virtual) supervisor mode, disable interrupts |
440 |
EmulatedSR = 0x2700; |
441 |
|
442 |
// Create and install stack for signal handlers |
443 |
sig_stack = malloc(SIG_STACK_SIZE); |
444 |
D(bug("Signal stack at %p\n", sig_stack)); |
445 |
if (sig_stack == NULL) { |
446 |
ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR)); |
447 |
QuitEmulator(); |
448 |
} |
449 |
stack_t new_stack; |
450 |
new_stack.ss_sp = sig_stack; |
451 |
new_stack.ss_flags = 0; |
452 |
new_stack.ss_size = SIG_STACK_SIZE; |
453 |
if (sigaltstack(&new_stack, NULL) < 0) { |
454 |
sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno)); |
455 |
ErrorAlert(str); |
456 |
QuitEmulator(); |
457 |
} |
458 |
|
459 |
// Install SIGILL handler for emulating privileged instructions and |
460 |
// executing A-Trap and EMUL_OP opcodes |
461 |
sigemptyset(&sigill_sa.sa_mask); // Block virtual 68k interrupts during SIGILL handling |
462 |
sigaddset(&sigill_sa.sa_mask, SIG_IRQ); |
463 |
sigaddset(&sigill_sa.sa_mask, SIGALRM); |
464 |
sigill_sa.sa_handler = (void (*)(int))sigill_handler; |
465 |
sigill_sa.sa_flags = SA_ONSTACK; |
466 |
if (sigaction(SIGILL, &sigill_sa, NULL) < 0) { |
467 |
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno)); |
468 |
ErrorAlert(str); |
469 |
QuitEmulator(); |
470 |
} |
471 |
|
472 |
// Install virtual 68k interrupt signal handler |
473 |
sigemptyset(&sigirq_sa.sa_mask); |
474 |
sigaddset(&sigirq_sa.sa_mask, SIGALRM); |
475 |
sigirq_sa.sa_handler = (void (*)(int))sigirq_handler; |
476 |
sigirq_sa.sa_flags = SA_ONSTACK | SA_RESTART; |
477 |
if (sigaction(SIG_IRQ, &sigirq_sa, NULL) < 0) { |
478 |
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_IRQ", strerror(errno)); |
479 |
ErrorAlert(str); |
480 |
QuitEmulator(); |
481 |
} |
482 |
#endif |
483 |
|
484 |
#ifdef ENABLE_MON |
485 |
// Setup SIGINT handler to enter mon |
486 |
sigemptyset(&sigint_sa.sa_mask); |
487 |
sigint_sa.sa_handler = (void (*)(int))sigint_handler; |
488 |
sigint_sa.sa_flags = 0; |
489 |
sigaction(SIGINT, &sigint_sa, NULL); |
490 |
#endif |
491 |
|
492 |
#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS) |
493 |
|
494 |
// POSIX.4 timers and real-time signals available, start 60Hz timer |
495 |
sigemptyset(&timer_sa.sa_mask); |
496 |
timer_sa.sa_sigaction = (void (*)(int, siginfo_t *, void *))one_tick; |
497 |
timer_sa.sa_flags = SA_SIGINFO | SA_RESTART; |
498 |
if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) { |
499 |
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_TIMER", strerror(errno)); |
500 |
ErrorAlert(str); |
501 |
QuitEmulator(); |
502 |
} |
503 |
struct sigevent timer_event; |
504 |
timer_event.sigev_notify = SIGEV_SIGNAL; |
505 |
timer_event.sigev_signo = SIG_TIMER; |
506 |
if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) { |
507 |
sprintf(str, GetString(STR_TIMER_CREATE_ERR), strerror(errno)); |
508 |
ErrorAlert(str); |
509 |
QuitEmulator(); |
510 |
} |
511 |
struct itimerspec req; |
512 |
req.it_value.tv_sec = 0; |
513 |
req.it_value.tv_nsec = 16625000; |
514 |
req.it_interval.tv_sec = 0; |
515 |
req.it_interval.tv_nsec = 16625000; |
516 |
if (timer_settime(timer, 0, &req, NULL) < 0) { |
517 |
sprintf(str, GetString(STR_TIMER_SETTIME_ERR), strerror(errno)); |
518 |
ErrorAlert(str); |
519 |
QuitEmulator(); |
520 |
} |
521 |
D(bug("60Hz timer started\n")); |
522 |
|
523 |
#elif defined(HAVE_PTHREADS) |
524 |
|
525 |
// POSIX threads available, start 60Hz thread |
526 |
pthread_attr_init(&tick_thread_attr); |
527 |
#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING) |
528 |
if (geteuid() == 0) { |
529 |
pthread_attr_setinheritsched(&tick_thread_attr, PTHREAD_EXPLICIT_SCHED); |
530 |
pthread_attr_setschedpolicy(&tick_thread_attr, SCHED_FIFO); |
531 |
struct sched_param fifo_param; |
532 |
fifo_param.sched_priority = (sched_get_priority_min(SCHED_FIFO) + sched_get_priority_max(SCHED_FIFO)) / 2; |
533 |
pthread_attr_setschedparam(&tick_thread_attr, &fifo_param); |
534 |
} |
535 |
#endif |
536 |
tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0); |
537 |
if (!tick_thread_active) { |
538 |
sprintf(str, GetString(STR_TICK_THREAD_ERR), strerror(errno)); |
539 |
ErrorAlert(str); |
540 |
QuitEmulator(); |
541 |
} |
542 |
D(bug("60Hz thread started\n")); |
543 |
|
544 |
#else |
545 |
|
546 |
// Start 60Hz timer |
547 |
sigemptyset(&timer_sa.sa_mask); // Block virtual 68k interrupts during SIGARLM handling |
548 |
sigaddset(&timer_sa.sa_mask, SIG_IRQ); |
549 |
timer_sa.sa_handler = one_tick; |
550 |
timer_sa.sa_flags = SA_ONSTACK | SA_RESTART; |
551 |
if (sigaction(SIGALRM, &timer_sa, NULL) < 0) { |
552 |
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGALRM", strerror(errno)); |
553 |
ErrorAlert(str); |
554 |
QuitEmulator(); |
555 |
} |
556 |
struct itimerval req; |
557 |
req.it_interval.tv_sec = req.it_value.tv_sec = 0; |
558 |
req.it_interval.tv_usec = req.it_value.tv_usec = 16625; |
559 |
setitimer(ITIMER_REAL, &req, NULL); |
560 |
|
561 |
#endif |
562 |
|
563 |
#ifdef HAVE_PTHREADS |
564 |
// Start XPRAM watchdog thread |
565 |
memcpy(last_xpram, XPRAM, 256); |
566 |
xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0); |
567 |
D(bug("XPRAM thread started\n")); |
568 |
#endif |
569 |
|
570 |
// Start 68k and jump to ROM boot routine |
571 |
D(bug("Starting emulation...\n")); |
572 |
Start680x0(); |
573 |
|
574 |
QuitEmulator(); |
575 |
return 0; |
576 |
} |
577 |
|
578 |
|
579 |
/* |
580 |
* Quit emulator |
581 |
*/ |
582 |
|
583 |
void QuitEmulator(void) |
584 |
{ |
585 |
D(bug("QuitEmulator\n")); |
586 |
|
587 |
#if EMULATED_68K |
588 |
// Exit 680x0 emulation |
589 |
Exit680x0(); |
590 |
#endif |
591 |
|
592 |
#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS) |
593 |
// Stop 60Hz timer |
594 |
timer_delete(timer); |
595 |
#elif defined(HAVE_PTHREADS) |
596 |
// Stop 60Hz thread |
597 |
if (tick_thread_active) { |
598 |
tick_thread_cancel = true; |
599 |
#ifdef HAVE_PTHREAD_CANCEL |
600 |
pthread_cancel(tick_thread); |
601 |
#endif |
602 |
pthread_join(tick_thread, NULL); |
603 |
} |
604 |
#else |
605 |
struct itimerval req; |
606 |
req.it_interval.tv_sec = req.it_value.tv_sec = 0; |
607 |
req.it_interval.tv_usec = req.it_value.tv_usec = 0; |
608 |
setitimer(ITIMER_REAL, &req, NULL); |
609 |
#endif |
610 |
|
611 |
#ifdef HAVE_PTHREADS |
612 |
// Stop XPRAM watchdog thread |
613 |
if (xpram_thread_active) { |
614 |
xpram_thread_cancel = true; |
615 |
#ifdef HAVE_PTHREAD_CANCEL |
616 |
pthread_cancel(xpram_thread); |
617 |
#endif |
618 |
pthread_join(xpram_thread, NULL); |
619 |
} |
620 |
#endif |
621 |
|
622 |
// Deinitialize everything |
623 |
ExitAll(); |
624 |
|
625 |
// Free ROM/RAM areas |
626 |
#if REAL_ADDRESSING |
627 |
if (memory_mapped_from_zero) |
628 |
munmap((caddr_t)0x0000, mapped_ram_rom_size); |
629 |
else |
630 |
#endif |
631 |
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
632 |
if (RAMBaseHost != (uint8 *)MAP_FAILED) { |
633 |
munmap((caddr_t)RAMBaseHost, mapped_ram_rom_size); |
634 |
RAMBaseHost = NULL; |
635 |
} |
636 |
#else |
637 |
if (ROMBaseHost) { |
638 |
free(ROMBaseHost); |
639 |
ROMBaseHost = NULL; |
640 |
} |
641 |
if (RAMBaseHost) { |
642 |
free(RAMBaseHost); |
643 |
RAMBaseHost = NULL; |
644 |
} |
645 |
#endif |
646 |
|
647 |
#if USE_SCRATCHMEM_SUBTERFUGE |
648 |
// Delete scratch memory area |
649 |
if (ScratchMem) { |
650 |
free((void *)(ScratchMem - SCRATCH_MEM_SIZE/2)); |
651 |
ScratchMem = NULL; |
652 |
} |
653 |
#endif |
654 |
|
655 |
#if REAL_ADDRESSING |
656 |
// Delete Low Memory area |
657 |
if (lm_area_mapped) |
658 |
munmap((char *)0x0000, 0x2000); |
659 |
#endif |
660 |
|
661 |
// Close /dev/zero |
662 |
if (zero_fd > 0) |
663 |
close(zero_fd); |
664 |
|
665 |
// Exit system routines |
666 |
SysExit(); |
667 |
|
668 |
// Exit preferences |
669 |
PrefsExit(); |
670 |
|
671 |
// Close X11 server connection |
672 |
if (x_display) |
673 |
XCloseDisplay(x_display); |
674 |
|
675 |
exit(0); |
676 |
} |
677 |
|
678 |
|
679 |
/* |
680 |
* Code was patched, flush caches if neccessary (i.e. when using a real 680x0 |
681 |
* or a dynamically recompiling emulator) |
682 |
*/ |
683 |
|
684 |
void FlushCodeCache(void *start, uint32 size) |
685 |
{ |
686 |
#if !EMULATED_68K && defined(__NetBSD__) |
687 |
m68k_sync_icache(start, size); |
688 |
#endif |
689 |
} |
690 |
|
691 |
|
692 |
/* |
693 |
* SIGINT handler, enters mon |
694 |
*/ |
695 |
|
696 |
#ifdef ENABLE_MON |
697 |
static void sigint_handler(...) |
698 |
{ |
699 |
#if EMULATED_68K |
700 |
uaecptr nextpc; |
701 |
extern void m68k_dumpstate(uaecptr *nextpc); |
702 |
m68k_dumpstate(&nextpc); |
703 |
#else |
704 |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
705 |
mon(3, arg); |
706 |
QuitEmulator(); |
707 |
#endif |
708 |
} |
709 |
#endif |
710 |
|
711 |
|
712 |
/* |
713 |
* Interrupt flags (must be handled atomically!) |
714 |
*/ |
715 |
|
716 |
uint32 InterruptFlags = 0; |
717 |
|
718 |
#if EMULATED_68K |
719 |
void SetInterruptFlag(uint32 flag) |
720 |
{ |
721 |
#ifdef HAVE_PTHREADS |
722 |
pthread_mutex_lock(&intflag_lock); |
723 |
InterruptFlags |= flag; |
724 |
pthread_mutex_unlock(&intflag_lock); |
725 |
#else |
726 |
InterruptFlags |= flag; // Pray that this is an atomic operation... |
727 |
#endif |
728 |
} |
729 |
|
730 |
void ClearInterruptFlag(uint32 flag) |
731 |
{ |
732 |
#ifdef HAVE_PTHREADS |
733 |
pthread_mutex_lock(&intflag_lock); |
734 |
InterruptFlags &= ~flag; |
735 |
pthread_mutex_unlock(&intflag_lock); |
736 |
#else |
737 |
InterruptFlags &= ~flag; |
738 |
#endif |
739 |
} |
740 |
#endif |
741 |
|
742 |
#if !EMULATED_68K |
743 |
void TriggerInterrupt(void) |
744 |
{ |
745 |
#if defined(HAVE_PTHREADS) |
746 |
pthread_kill(emul_thread, SIG_IRQ); |
747 |
#else |
748 |
raise(SIG_IRQ); |
749 |
#endif |
750 |
} |
751 |
|
752 |
void TriggerNMI(void) |
753 |
{ |
754 |
// not yet supported |
755 |
} |
756 |
#endif |
757 |
|
758 |
|
759 |
/* |
760 |
* XPRAM watchdog thread (saves XPRAM every minute) |
761 |
*/ |
762 |
|
763 |
static void xpram_watchdog(void) |
764 |
{ |
765 |
if (memcmp(last_xpram, XPRAM, 256)) { |
766 |
memcpy(last_xpram, XPRAM, 256); |
767 |
SaveXPRAM(); |
768 |
} |
769 |
} |
770 |
|
771 |
#ifdef HAVE_PTHREADS |
772 |
static void *xpram_func(void *arg) |
773 |
{ |
774 |
while (!xpram_thread_cancel) { |
775 |
for (int i=0; i<60 && !xpram_thread_cancel; i++) |
776 |
Delay_usec(999999); // Only wait 1 second so we quit promptly when xpram_thread_cancel becomes true |
777 |
xpram_watchdog(); |
778 |
} |
779 |
return NULL; |
780 |
} |
781 |
#endif |
782 |
|
783 |
|
784 |
/* |
785 |
* 60Hz thread (really 60.15Hz) |
786 |
*/ |
787 |
|
788 |
static void one_second(void) |
789 |
{ |
790 |
// Pseudo Mac 1Hz interrupt, update local time |
791 |
WriteMacInt32(0x20c, TimerDateTime()); |
792 |
|
793 |
SetInterruptFlag(INTFLAG_1HZ); |
794 |
TriggerInterrupt(); |
795 |
|
796 |
#ifndef HAVE_PTHREADS |
797 |
static int second_counter = 0; |
798 |
if (++second_counter > 60) { |
799 |
second_counter = 0; |
800 |
xpram_watchdog(); |
801 |
} |
802 |
#endif |
803 |
} |
804 |
|
805 |
static void one_tick(...) |
806 |
{ |
807 |
static int tick_counter = 0; |
808 |
if (++tick_counter > 60) { |
809 |
tick_counter = 0; |
810 |
one_second(); |
811 |
} |
812 |
|
813 |
#ifndef HAVE_PTHREADS |
814 |
// No threads available, perform video refresh from here |
815 |
VideoRefresh(); |
816 |
#endif |
817 |
|
818 |
// Trigger 60Hz interrupt |
819 |
if (ROMVersion != ROM_VERSION_CLASSIC || HasMacStarted()) { |
820 |
SetInterruptFlag(INTFLAG_60HZ); |
821 |
TriggerInterrupt(); |
822 |
} |
823 |
} |
824 |
|
825 |
#ifdef HAVE_PTHREADS |
826 |
static void *tick_func(void *arg) |
827 |
{ |
828 |
uint64 next = GetTicks_usec(); |
829 |
while (!tick_thread_cancel) { |
830 |
one_tick(); |
831 |
next += 16625; |
832 |
int64 delay = next - GetTicks_usec(); |
833 |
if (delay > 0) |
834 |
Delay_usec(delay); |
835 |
else if (delay < -16625) |
836 |
next = GetTicks_usec(); |
837 |
} |
838 |
return NULL; |
839 |
} |
840 |
#endif |
841 |
|
842 |
|
843 |
/* |
844 |
* Get current value of microsecond timer |
845 |
*/ |
846 |
|
847 |
uint64 GetTicks_usec(void) |
848 |
{ |
849 |
#ifdef HAVE_CLOCK_GETTIME |
850 |
struct timespec t; |
851 |
clock_gettime(CLOCK_REALTIME, &t); |
852 |
return (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000; |
853 |
#else |
854 |
struct timeval t; |
855 |
gettimeofday(&t, NULL); |
856 |
return (uint64)t.tv_sec * 1000000 + t.tv_usec; |
857 |
#endif |
858 |
} |
859 |
|
860 |
|
861 |
/* |
862 |
* Delay by specified number of microseconds (<1 second) |
863 |
* (adapted from SDL_Delay() source; this function is designed to provide |
864 |
* the highest accuracy possible) |
865 |
*/ |
866 |
|
867 |
#if defined(linux) |
868 |
// Linux select() changes its timeout parameter upon return to contain |
869 |
// the remaining time. Most other unixen leave it unchanged or undefined. |
870 |
#define SELECT_SETS_REMAINING |
871 |
#elif defined(__FreeBSD__) || defined(__sun__) |
872 |
#define USE_NANOSLEEP |
873 |
#elif defined(HAVE_PTHREADS) && defined(sgi) |
874 |
// SGI pthreads has a bug when using pthreads+signals+nanosleep, |
875 |
// so instead of using nanosleep, wait on a CV which is never signalled. |
876 |
#define USE_COND_TIMEDWAIT |
877 |
#endif |
878 |
|
879 |
void Delay_usec(uint32 usec) |
880 |
{ |
881 |
int was_error; |
882 |
|
883 |
#if defined(USE_NANOSLEEP) |
884 |
struct timespec elapsed, tv; |
885 |
#elif defined(USE_COND_TIMEDWAIT) |
886 |
// Use a local mutex and cv, so threads remain independent |
887 |
pthread_cond_t delay_cond = PTHREAD_COND_INITIALIZER; |
888 |
pthread_mutex_t delay_mutex = PTHREAD_MUTEX_INITIALIZER; |
889 |
struct timespec elapsed; |
890 |
uint64 future; |
891 |
#else |
892 |
struct timeval tv; |
893 |
#ifndef SELECT_SETS_REMAINING |
894 |
uint64 then, now, elapsed; |
895 |
#endif |
896 |
#endif |
897 |
|
898 |
// Set the timeout interval - Linux only needs to do this once |
899 |
#if defined(SELECT_SETS_REMAINING) |
900 |
tv.tv_sec = 0; |
901 |
tv.tv_usec = usec; |
902 |
#elif defined(USE_NANOSLEEP) |
903 |
elapsed.tv_sec = 0; |
904 |
elapsed.tv_nsec = usec * 1000; |
905 |
#elif defined(USE_COND_TIMEDWAIT) |
906 |
future = GetTicks_usec() + usec; |
907 |
elapsed.tv_sec = future / 1000000; |
908 |
elapsed.tv_nsec = (future % 1000000) * 1000; |
909 |
#else |
910 |
then = GetTicks_usec(); |
911 |
#endif |
912 |
|
913 |
do { |
914 |
errno = 0; |
915 |
#if defined(USE_NANOSLEEP) |
916 |
tv.tv_sec = elapsed.tv_sec; |
917 |
tv.tv_nsec = elapsed.tv_nsec; |
918 |
was_error = nanosleep(&tv, &elapsed); |
919 |
#elif defined(USE_COND_TIMEDWAIT) |
920 |
was_error = pthread_mutex_lock(&delay_mutex); |
921 |
was_error = pthread_cond_timedwait(&delay_cond, &delay_mutex, &elapsed); |
922 |
was_error = pthread_mutex_unlock(&delay_mutex); |
923 |
#else |
924 |
#ifndef SELECT_SETS_REMAINING |
925 |
// Calculate the time interval left (in case of interrupt) |
926 |
now = GetTicks_usec(); |
927 |
elapsed = now - then; |
928 |
then = now; |
929 |
if (elapsed >= usec) |
930 |
break; |
931 |
usec -= elapsed; |
932 |
tv.tv_sec = 0; |
933 |
tv.tv_usec = usec; |
934 |
#endif |
935 |
was_error = select(0, NULL, NULL, NULL, &tv); |
936 |
#endif |
937 |
} while (was_error && (errno == EINTR)); |
938 |
} |
939 |
|
940 |
|
941 |
#if !EMULATED_68K |
942 |
/* |
943 |
* Virtual 68k interrupt handler |
944 |
*/ |
945 |
|
946 |
static void sigirq_handler(int sig, int code, struct sigcontext *scp) |
947 |
{ |
948 |
// Interrupts disabled? Then do nothing |
949 |
if (EmulatedSR & 0x0700) |
950 |
return; |
951 |
|
952 |
struct sigstate *state = (struct sigstate *)scp->sc_ap; |
953 |
M68kRegisters *regs = (M68kRegisters *)&state->ss_frame; |
954 |
|
955 |
// Set up interrupt frame on stack |
956 |
uint32 a7 = regs->a[7]; |
957 |
a7 -= 2; |
958 |
WriteMacInt16(a7, 0x64); |
959 |
a7 -= 4; |
960 |
WriteMacInt32(a7, scp->sc_pc); |
961 |
a7 -= 2; |
962 |
WriteMacInt16(a7, scp->sc_ps | EmulatedSR); |
963 |
scp->sc_sp = regs->a[7] = a7; |
964 |
|
965 |
// Set interrupt level |
966 |
EmulatedSR |= 0x2100; |
967 |
|
968 |
// Jump to MacOS interrupt handler on return |
969 |
scp->sc_pc = ReadMacInt32(0x64); |
970 |
} |
971 |
|
972 |
|
973 |
/* |
974 |
* SIGILL handler, for emulation of privileged instructions and executing |
975 |
* A-Trap and EMUL_OP opcodes |
976 |
*/ |
977 |
|
978 |
static void sigill_handler(int sig, int code, struct sigcontext *scp) |
979 |
{ |
980 |
struct sigstate *state = (struct sigstate *)scp->sc_ap; |
981 |
uint16 *pc = (uint16 *)scp->sc_pc; |
982 |
uint16 opcode = *pc; |
983 |
M68kRegisters *regs = (M68kRegisters *)&state->ss_frame; |
984 |
|
985 |
#define INC_PC(n) scp->sc_pc += (n) |
986 |
|
987 |
#define GET_SR (scp->sc_ps | EmulatedSR) |
988 |
|
989 |
#define STORE_SR(v) \ |
990 |
scp->sc_ps = (v) & 0xff; \ |
991 |
EmulatedSR = (v) & 0xe700; \ |
992 |
if (((v) & 0x0700) == 0 && InterruptFlags) \ |
993 |
TriggerInterrupt(); |
994 |
|
995 |
//printf("opcode %04x at %p, sr %04x, emul_sr %04x\n", opcode, pc, scp->sc_ps, EmulatedSR); |
996 |
|
997 |
if ((opcode & 0xf000) == 0xa000) { |
998 |
|
999 |
// A-Line instruction, set up A-Line trap frame on stack |
1000 |
uint32 a7 = regs->a[7]; |
1001 |
a7 -= 2; |
1002 |
WriteMacInt16(a7, 0x28); |
1003 |
a7 -= 4; |
1004 |
WriteMacInt32(a7, (uint32)pc); |
1005 |
a7 -= 2; |
1006 |
WriteMacInt16(a7, GET_SR); |
1007 |
scp->sc_sp = regs->a[7] = a7; |
1008 |
|
1009 |
// Jump to MacOS A-Line handler on return |
1010 |
scp->sc_pc = ReadMacInt32(0x28); |
1011 |
|
1012 |
} else if ((opcode & 0xff00) == 0x7100) { |
1013 |
|
1014 |
// Extended opcode, push registers on user stack |
1015 |
uint32 a7 = regs->a[7]; |
1016 |
a7 -= 4; |
1017 |
WriteMacInt32(a7, (uint32)pc); |
1018 |
a7 -= 2; |
1019 |
WriteMacInt16(a7, scp->sc_ps); |
1020 |
for (int i=7; i>=0; i--) { |
1021 |
a7 -= 4; |
1022 |
WriteMacInt32(a7, regs->a[i]); |
1023 |
} |
1024 |
for (int i=7; i>=0; i--) { |
1025 |
a7 -= 4; |
1026 |
WriteMacInt32(a7, regs->d[i]); |
1027 |
} |
1028 |
scp->sc_sp = regs->a[7] = a7; |
1029 |
|
1030 |
// Jump to EmulOp trampoline code on return |
1031 |
scp->sc_pc = (uint32)EmulOpTrampoline; |
1032 |
|
1033 |
} else switch (opcode) { // Emulate privileged instructions |
1034 |
|
1035 |
case 0x40e7: // move sr,-(sp) |
1036 |
regs->a[7] -= 2; |
1037 |
WriteMacInt16(regs->a[7], GET_SR); |
1038 |
scp->sc_sp = regs->a[7]; |
1039 |
INC_PC(2); |
1040 |
break; |
1041 |
|
1042 |
case 0x46df: { // move (sp)+,sr |
1043 |
uint16 sr = ReadMacInt16(regs->a[7]); |
1044 |
STORE_SR(sr); |
1045 |
regs->a[7] += 2; |
1046 |
scp->sc_sp = regs->a[7]; |
1047 |
INC_PC(2); |
1048 |
break; |
1049 |
} |
1050 |
|
1051 |
case 0x007c: { // ori #xxxx,sr |
1052 |
uint16 sr = GET_SR | pc[1]; |
1053 |
scp->sc_ps = sr & 0xff; // oring bits into the sr can't enable interrupts, so we don't need to call STORE_SR |
1054 |
EmulatedSR = sr & 0xe700; |
1055 |
INC_PC(4); |
1056 |
break; |
1057 |
} |
1058 |
|
1059 |
case 0x027c: { // andi #xxxx,sr |
1060 |
uint16 sr = GET_SR & pc[1]; |
1061 |
STORE_SR(sr); |
1062 |
INC_PC(4); |
1063 |
break; |
1064 |
} |
1065 |
|
1066 |
case 0x46fc: // move #xxxx,sr |
1067 |
STORE_SR(pc[1]); |
1068 |
INC_PC(4); |
1069 |
break; |
1070 |
|
1071 |
case 0x46ef: { // move (xxxx,sp),sr |
1072 |
uint16 sr = ReadMacInt16(regs->a[7] + (int32)(int16)pc[1]); |
1073 |
STORE_SR(sr); |
1074 |
INC_PC(4); |
1075 |
break; |
1076 |
} |
1077 |
|
1078 |
case 0x46d8: // move (a0)+,sr |
1079 |
case 0x46d9: { // move (a1)+,sr |
1080 |
uint16 sr = ReadMacInt16(regs->a[opcode & 7]); |
1081 |
STORE_SR(sr); |
1082 |
regs->a[opcode & 7] += 2; |
1083 |
INC_PC(2); |
1084 |
break; |
1085 |
} |
1086 |
|
1087 |
case 0x40f8: // move sr,xxxx.w |
1088 |
WriteMacInt16(pc[1], GET_SR); |
1089 |
INC_PC(4); |
1090 |
break; |
1091 |
|
1092 |
case 0x40d0: // move sr,(a0) |
1093 |
case 0x40d1: // move sr,(a1) |
1094 |
case 0x40d2: // move sr,(a2) |
1095 |
case 0x40d3: // move sr,(a3) |
1096 |
case 0x40d4: // move sr,(a4) |
1097 |
case 0x40d5: // move sr,(a5) |
1098 |
case 0x40d6: // move sr,(a6) |
1099 |
case 0x40d7: // move sr,(sp) |
1100 |
WriteMacInt16(regs->a[opcode & 7], GET_SR); |
1101 |
INC_PC(2); |
1102 |
break; |
1103 |
|
1104 |
case 0x40c0: // move sr,d0 |
1105 |
case 0x40c1: // move sr,d1 |
1106 |
case 0x40c2: // move sr,d2 |
1107 |
case 0x40c3: // move sr,d3 |
1108 |
case 0x40c4: // move sr,d4 |
1109 |
case 0x40c5: // move sr,d5 |
1110 |
case 0x40c6: // move sr,d6 |
1111 |
case 0x40c7: // move sr,d7 |
1112 |
regs->d[opcode & 7] = GET_SR; |
1113 |
INC_PC(2); |
1114 |
break; |
1115 |
|
1116 |
case 0x46c0: // move d0,sr |
1117 |
case 0x46c1: // move d1,sr |
1118 |
case 0x46c2: // move d2,sr |
1119 |
case 0x46c3: // move d3,sr |
1120 |
case 0x46c4: // move d4,sr |
1121 |
case 0x46c5: // move d5,sr |
1122 |
case 0x46c6: // move d6,sr |
1123 |
case 0x46c7: { // move d7,sr |
1124 |
uint16 sr = regs->d[opcode & 7]; |
1125 |
STORE_SR(sr); |
1126 |
INC_PC(2); |
1127 |
break; |
1128 |
} |
1129 |
|
1130 |
case 0xf327: // fsave -(sp) |
1131 |
if (CPUIs68060) { |
1132 |
regs->a[7] -= 4; |
1133 |
WriteMacInt32(regs->a[7], 0x60000000); // Idle frame |
1134 |
regs->a[7] -= 4; |
1135 |
WriteMacInt32(regs->a[7], 0); |
1136 |
regs->a[7] -= 4; |
1137 |
WriteMacInt32(regs->a[7], 0); |
1138 |
} else { |
1139 |
regs->a[7] -= 4; |
1140 |
WriteMacInt32(regs->a[7], 0x41000000); // Idle frame |
1141 |
} |
1142 |
scp->sc_sp = regs->a[7]; |
1143 |
INC_PC(2); |
1144 |
break; |
1145 |
|
1146 |
case 0xf35f: // frestore (sp)+ |
1147 |
if (CPUIs68060) |
1148 |
regs->a[7] += 12; |
1149 |
else |
1150 |
regs->a[7] += 4; |
1151 |
scp->sc_sp = regs->a[7]; |
1152 |
INC_PC(2); |
1153 |
break; |
1154 |
|
1155 |
case 0x4e73: { // rte |
1156 |
uint32 a7 = regs->a[7]; |
1157 |
uint16 sr = ReadMacInt16(a7); |
1158 |
a7 += 2; |
1159 |
scp->sc_ps = sr & 0xff; |
1160 |
EmulatedSR = sr & 0xe700; |
1161 |
scp->sc_pc = ReadMacInt32(a7); |
1162 |
a7 += 4; |
1163 |
uint16 format = ReadMacInt16(a7) >> 12; |
1164 |
a7 += 2; |
1165 |
static const int frame_adj[16] = { |
1166 |
0, 0, 4, 4, 8, 0, 0, 52, 50, 12, 24, 84, 16, 0, 0, 0 |
1167 |
}; |
1168 |
scp->sc_sp = regs->a[7] = a7 + frame_adj[format]; |
1169 |
break; |
1170 |
} |
1171 |
|
1172 |
case 0x4e7a: // movec cr,x |
1173 |
switch (pc[1]) { |
1174 |
case 0x0002: // movec cacr,d0 |
1175 |
regs->d[0] = 0x3111; |
1176 |
break; |
1177 |
case 0x1002: // movec cacr,d1 |
1178 |
regs->d[1] = 0x3111; |
1179 |
break; |
1180 |
case 0x0003: // movec tc,d0 |
1181 |
case 0x0004: // movec itt0,d0 |
1182 |
case 0x0005: // movec itt1,d0 |
1183 |
case 0x0006: // movec dtt0,d0 |
1184 |
case 0x0007: // movec dtt1,d0 |
1185 |
case 0x0806: // movec urp,d0 |
1186 |
case 0x0807: // movec srp,d0 |
1187 |
regs->d[0] = 0; |
1188 |
break; |
1189 |
case 0x1000: // movec sfc,d1 |
1190 |
case 0x1001: // movec dfc,d1 |
1191 |
case 0x1003: // movec tc,d1 |
1192 |
case 0x1801: // movec vbr,d1 |
1193 |
regs->d[1] = 0; |
1194 |
break; |
1195 |
case 0x8801: // movec vbr,a0 |
1196 |
regs->a[0] = 0; |
1197 |
break; |
1198 |
case 0x9801: // movec vbr,a1 |
1199 |
regs->a[1] = 0; |
1200 |
break; |
1201 |
default: |
1202 |
goto ill; |
1203 |
} |
1204 |
INC_PC(4); |
1205 |
break; |
1206 |
|
1207 |
case 0x4e7b: // movec x,cr |
1208 |
switch (pc[1]) { |
1209 |
case 0x1000: // movec d1,sfc |
1210 |
case 0x1001: // movec d1,dfc |
1211 |
case 0x0801: // movec d0,vbr |
1212 |
case 0x1801: // movec d1,vbr |
1213 |
break; |
1214 |
case 0x0002: // movec d0,cacr |
1215 |
case 0x1002: // movec d1,cacr |
1216 |
FlushCodeCache(NULL, 0); |
1217 |
break; |
1218 |
default: |
1219 |
goto ill; |
1220 |
} |
1221 |
INC_PC(4); |
1222 |
break; |
1223 |
|
1224 |
case 0xf478: // cpusha dc |
1225 |
case 0xf4f8: // cpusha dc/ic |
1226 |
FlushCodeCache(NULL, 0); |
1227 |
INC_PC(2); |
1228 |
break; |
1229 |
|
1230 |
default: |
1231 |
ill: printf("SIGILL num %d, code %d\n", sig, code); |
1232 |
printf(" context %p:\n", scp); |
1233 |
printf(" onstack %08x\n", scp->sc_onstack); |
1234 |
printf(" sp %08x\n", scp->sc_sp); |
1235 |
printf(" fp %08x\n", scp->sc_fp); |
1236 |
printf(" pc %08x\n", scp->sc_pc); |
1237 |
printf(" opcode %04x\n", opcode); |
1238 |
printf(" sr %08x\n", scp->sc_ps); |
1239 |
printf(" state %p:\n", state); |
1240 |
printf(" flags %d\n", state->ss_flags); |
1241 |
for (int i=0; i<8; i++) |
1242 |
printf(" d%d %08x\n", i, state->ss_frame.f_regs[i]); |
1243 |
for (int i=0; i<8; i++) |
1244 |
printf(" a%d %08x\n", i, state->ss_frame.f_regs[i+8]); |
1245 |
|
1246 |
#ifdef ENABLE_MON |
1247 |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
1248 |
mon(3, arg); |
1249 |
#endif |
1250 |
QuitEmulator(); |
1251 |
break; |
1252 |
} |
1253 |
} |
1254 |
#endif |
1255 |
|
1256 |
|
1257 |
/* |
1258 |
* Display alert |
1259 |
*/ |
1260 |
|
1261 |
#ifdef ENABLE_GTK |
1262 |
static void dl_destroyed(void) |
1263 |
{ |
1264 |
gtk_main_quit(); |
1265 |
} |
1266 |
|
1267 |
static void dl_quit(GtkWidget *dialog) |
1268 |
{ |
1269 |
gtk_widget_destroy(dialog); |
1270 |
} |
1271 |
|
1272 |
void display_alert(int title_id, int prefix_id, int button_id, const char *text) |
1273 |
{ |
1274 |
char str[256]; |
1275 |
sprintf(str, GetString(prefix_id), text); |
1276 |
|
1277 |
GtkWidget *dialog = gtk_dialog_new(); |
1278 |
gtk_window_set_title(GTK_WINDOW(dialog), GetString(title_id)); |
1279 |
gtk_container_border_width(GTK_CONTAINER(dialog), 5); |
1280 |
gtk_widget_set_uposition(GTK_WIDGET(dialog), 100, 150); |
1281 |
gtk_signal_connect(GTK_OBJECT(dialog), "destroy", GTK_SIGNAL_FUNC(dl_destroyed), NULL); |
1282 |
|
1283 |
GtkWidget *label = gtk_label_new(str); |
1284 |
gtk_widget_show(label); |
1285 |
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), label, TRUE, TRUE, 0); |
1286 |
|
1287 |
GtkWidget *button = gtk_button_new_with_label(GetString(button_id)); |
1288 |
gtk_widget_show(button); |
1289 |
gtk_signal_connect_object(GTK_OBJECT(button), "clicked", GTK_SIGNAL_FUNC(dl_quit), GTK_OBJECT(dialog)); |
1290 |
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, FALSE, FALSE, 0); |
1291 |
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT); |
1292 |
gtk_widget_grab_default(button); |
1293 |
gtk_widget_show(dialog); |
1294 |
|
1295 |
gtk_main(); |
1296 |
} |
1297 |
#endif |
1298 |
|
1299 |
|
1300 |
/* |
1301 |
* Display error alert |
1302 |
*/ |
1303 |
|
1304 |
void ErrorAlert(const char *text) |
1305 |
{ |
1306 |
#ifdef ENABLE_GTK |
1307 |
if (PrefsFindBool("nogui") || x_display == NULL) { |
1308 |
printf(GetString(STR_SHELL_ERROR_PREFIX), text); |
1309 |
return; |
1310 |
} |
1311 |
VideoQuitFullScreen(); |
1312 |
display_alert(STR_ERROR_ALERT_TITLE, STR_GUI_ERROR_PREFIX, STR_QUIT_BUTTON, text); |
1313 |
#else |
1314 |
printf(GetString(STR_SHELL_ERROR_PREFIX), text); |
1315 |
#endif |
1316 |
} |
1317 |
|
1318 |
|
1319 |
/* |
1320 |
* Display warning alert |
1321 |
*/ |
1322 |
|
1323 |
void WarningAlert(const char *text) |
1324 |
{ |
1325 |
#ifdef ENABLE_GTK |
1326 |
if (PrefsFindBool("nogui") || x_display == NULL) { |
1327 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
1328 |
return; |
1329 |
} |
1330 |
display_alert(STR_WARNING_ALERT_TITLE, STR_GUI_WARNING_PREFIX, STR_OK_BUTTON, text); |
1331 |
#else |
1332 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
1333 |
#endif |
1334 |
} |
1335 |
|
1336 |
|
1337 |
/* |
1338 |
* Display choice alert |
1339 |
*/ |
1340 |
|
1341 |
bool ChoiceAlert(const char *text, const char *pos, const char *neg) |
1342 |
{ |
1343 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
1344 |
return false; //!! |
1345 |
} |