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root/cebix/SheepShaver/src/Unix/main_unix.cpp

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.14 by gbeauche, 2003-11-10T16:05:52Z vs.
Revision 1.75 by gbeauche, 2006-05-06T10:42:51Z

#	Line 1 | Line 1
1		/*
2		*  main_unix.cpp - Emulation core, Unix implementation
3		*
4	<	*  SheepShaver (C) 1997-2002 Christian Bauer and Marc Hellwig
4	>	*  SheepShaver (C) 1997-2005 Christian Bauer and Marc Hellwig
5		*
6		*  This program is free software; you can redistribute it and/or modify
7		*  it under the terms of the GNU General Public License as published by
#	Line 27 | Line 27
27		*  is slightly different from the SysV ABI used by Linux:
28		*    - Stack frames are different (e.g. LR is stored in 8(r1) under
29		*      MacOS, but in 4(r1) under Linux)
30	<	*    - There is no TOC under Linux; r2 is free for the user
30	>	*    - There is a pointer to Thread Local Storage (TLS) under Linux with
31	>	*      recent enough glibc. This is r2 in 32-bit mode and r13 in
32	>	*      64-bit mode (PowerOpen/AIX ABI)
33		*    - r13 is used as a small data pointer under Linux (but appearently
34		*      it is not used this way? To be sure, we specify -msdata=none
35		*      in the Makefile)
36	<	*    - As there is no TOC, there are also no TVECTs under Linux;
37	<	*      function pointers point directly to the function code
36	>	*    - There are no TVECTs under Linux; function pointers point
37	>	*      directly to the function code
38		*  The Execute*() functions have to account for this. Additionally, we
39		*  cannot simply call MacOS functions by getting their TVECT and jumping
40		*  to it. Such calls are done via the call_macos*() functions in
#	Line 65 | Line 67
67		*  ExecutePPC (or any function that might cause a mode switch). The signal
68		*  stack is restored before exiting the SIGUSR2 handler.
69		*
70	+	*  Note that POSIX standard says you can't modify the alternate
71	+	*  signal stack while the process is executing on it. There is a
72	+	*  hackaround though: we install a trampoline SIGUSR2 handler that
73	+	*  sets up an alternate stack itself and calls the real handler.
74	+	*  Then, when we call sigaltstack() there, we no longer get an EPERM,
75	+	*  i.e. it now works.
76	+	*
77		*  TODO:
78		*    check if SIGSEGV handler works for all registers (including FP!)
79		*/
#	Line 93 | Line 102
102		#include "xpram.h"
103		#include "timer.h"
104		#include "adb.h"
96	–	#include "sony.h"
97	–	#include "disk.h"
98	–	#include "cdrom.h"
99	–	#include "scsi.h"
105		#include "video.h"
101	–	#include "audio.h"
102	–	#include "ether.h"
103	–	#include "serial.h"
104	–	#include "clip.h"
105	–	#include "extfs.h"
106		#include "sys.h"
107		#include "macos_util.h"
108		#include "rom_patches.h"
109		#include "user_strings.h"
110		#include "vm_alloc.h"
111		#include "sigsegv.h"
112	+	#include "sigregs.h"
113	+	#include "rpc.h"
114
115		#define DEBUG 0
116		#include "debug.h"
117
118
119	+	#ifdef HAVE_DIRENT_H
120	+	#include <dirent.h>
121	+	#endif
122	+
123	+	#ifdef USE_SDL
124	+	#include <SDL.h>
125	+	#endif
126	+
127	+	#ifndef USE_SDL_VIDEO
128		#include <X11/Xlib.h>
129	+	#endif
130
131		#ifdef ENABLE_GTK
132		#include <gtk/gtk.h>
#	Line 131 | Line 143
143		#endif
144
145
146	+	// Enable emulation of unaligned lmw/stmw?
147	+	#define EMULATE_UNALIGNED_LOADSTORE_MULTIPLE 1
148	+
149		// Enable Execute68k() safety checks?
150		#define SAFE_EXEC_68K 0
151
#	Line 145 | Line 160
160		const char ROM_FILE_NAME[] = "ROM";
161		const char ROM_FILE_NAME2[] = "Mac OS ROM";
162
163	<	const uint32 RAM_BASE = 0x20000000;                     // Base address of RAM
164	<	const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
165	<
166	<
167	<	#if !EMULATED_PPC
153	<	// Structure in which registers are saved in a signal handler;
154	<	// sigcontext->regs points to it
155	<	// (see arch/ppc/kernel/signal.c)
156	<	typedef struct {
157	<	uint32 u[4];
158	<	} __attribute((aligned(16))) vector128;
159	<	#include <linux/elf.h>
160	<
161	<	struct sigregs {
162	<	elf_gregset_t   gp_regs;                                // Identical to pt_regs
163	<	double                  fp_regs[ELF_NFPREG];    // f0..f31 and fpsrc
164	<	//more (uninteresting) stuff following here
165	<	};
163	>	#if REAL_ADDRESSING
164	>	const uintptr RAM_BASE = 0x20000000;            // Base address of RAM
165	>	#else
166	>	// FIXME: needs to be >= 0x04000000
167	>	const uintptr RAM_BASE = 0x10000000;            // Base address of RAM
168		#endif
169	+	const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
170
171
172		// Global variables (exported)
173		#if !EMULATED_PPC
174	<	void *TOC;                              // Small data pointer (r13)
174	>	void *TOC = NULL;               // Pointer to Thread Local Storage (r2)
175	>	void *R13 = NULL;               // Pointer to .sdata section (r13 under Linux)
176		#endif
177		uint32 RAMBase;                 // Base address of Mac RAM
178		uint32 RAMSize;                 // Size of Mac RAM
175	–	uint32 SheepStack1Base; // SheepShaver first alternate stack base
176	–	uint32 SheepStack2Base; // SheepShaver second alternate stack base
177	–	uint32 SheepThunksBase; // SheepShaver thunks base
179		uint32 KernelDataAddr;  // Address of Kernel Data
180		uint32 BootGlobsAddr;   // Address of BootGlobs structure at top of Mac RAM
181	+	uint32 DRCacheAddr;             // Address of DR Cache
182		uint32 PVR;                             // Theoretical PVR
183		int64 CPUClockSpeed;    // Processor clock speed (Hz)
184		int64 BusClockSpeed;    // Bus clock speed (Hz)
185	+	int64 TimebaseSpeed;    // Timebase clock speed (Hz)
186	+	uint8 *RAMBaseHost;             // Base address of Mac RAM (host address space)
187	+	uint8 *ROMBaseHost;             // Base address of Mac ROM (host address space)
188
189
190		// Global variables
191	+	#ifndef USE_SDL_VIDEO
192		char *x_display_name = NULL;                            // X11 display name
193		Display *x_display = NULL;                                      // X11 display handle
194	+	#ifdef X11_LOCK_TYPE
195	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
196	+	#endif
197	+	#endif
198
199		static int zero_fd = 0;                                         // FD of /dev/zero
190	–	static bool sheep_area_mapped = false;          // Flag: SheepShaver data area mmap()ed
200		static bool lm_area_mapped = false;                     // Flag: Low Memory area mmap()ped
201		static int kernel_area = -1;                            // SHM ID of Kernel Data area
202		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
203		static bool ram_area_mapped = false;            // Flag: Mac RAM mmap()ped
204	+	static bool dr_cache_area_mapped = false;       // Flag: Mac DR Cache mmap()ped
205	+	static bool dr_emulator_area_mapped = false;// Flag: Mac DR Emulator mmap()ped
206		static KernelData *kernel_data;                         // Pointer to Kernel Data
207		static EmulatorData *emulator_data;
208
209		static uint8 last_xpram[XPRAM_SIZE];            // Buffer for monitoring XPRAM changes
210
211		static bool nvram_thread_active = false;        // Flag: NVRAM watchdog installed
212	+	static volatile bool nvram_thread_cancel;       // Flag: Cancel NVRAM thread
213		static pthread_t nvram_thread;                          // NVRAM watchdog
214		static bool tick_thread_active = false;         // Flag: MacOS thread installed
215	+	static volatile bool tick_thread_cancel;        // Flag: Cancel 60Hz thread
216		static pthread_t tick_thread;                           // 60Hz thread
217		static pthread_t emul_thread;                           // MacOS thread
218
#	Line 207 | Line 220 | static bool ready_for_signals = false;
220		static int64 num_segv = 0;                                      // Number of handled SEGV signals
221
222		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
223	<	#if !EMULATED_PPC
223	>	#if EMULATED_PPC
224	>	static uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
225	>	#else
226		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
227		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
228	<	static void *sig_stack = NULL;                          // Stack for signal handlers
229	<	static void *extra_stack = NULL;                        // Stack for SIGSEGV inside interrupt handler
228	>	static struct sigaltstack sig_stack;            // Stack for signal handlers
229	>	static struct sigaltstack extra_stack;          // Stack for SIGSEGV inside interrupt handler
230		static bool emul_thread_fatal = false;          // Flag: MacOS thread crashed, tick thread shall dump debug output
231		static sigregs sigsegv_regs;                            // Register dump when crashed
232	+	static const char *crash_reason = NULL;         // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
233		#endif
234
235	+	static rpc_connection_t *gui_connection = NULL; // RPC connection to the GUI
236	+	static const char *gui_connection_path = NULL;  // GUI connection identifier
237	+
238	+	uint32  SheepMem::page_size;                            // Size of a native page
239	+	uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
240	+	uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
241	+	uintptr SheepMem::proc;                                         // Bottom address of SheepShave procedures
242	+	uintptr SheepMem::data;                                         // Top of SheepShaver data (stack like storage)
243	+
244
245		// Prototypes
246	+	static bool kernel_data_init(void);
247	+	static void kernel_data_exit(void);
248		static void Quit(void);
249		static void *emul_func(void *arg);
250		static void *nvram_func(void *arg);
251		static void *tick_func(void *arg);
252		#if EMULATED_PPC
226	–	static void sigusr2_handler(int sig);
253		extern void emul_ppc(uint32 start);
254		extern void init_emul_ppc(void);
255		extern void exit_emul_ppc(void);
256	+	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
257		#else
258	<	static void sigusr2_handler(int sig, sigcontext_struct *sc);
259	<	static void sigsegv_handler(int sig, sigcontext_struct *sc);
260	<	static void sigill_handler(int sig, sigcontext_struct *sc);
258	>	extern "C" void sigusr2_handler_init(int sig, siginfo_t *sip, void *scp);
259	>	extern "C" void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
260	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp);
261	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp);
262		#endif
263
264
265		// From asm_linux.S
266		#if !EMULATED_PPC
239	–	extern "C" void *get_toc(void);
267		extern "C" void *get_sp(void);
268	<	extern "C" void flush_icache_range(void *start, void *end);
268	>	extern "C" void *get_r2(void);
269	>	extern "C" void set_r2(void *);
270	>	extern "C" void *get_r13(void);
271	>	extern "C" void set_r13(void *);
272	>	extern "C" void flush_icache_range(uint32 start, uint32 end);
273		extern "C" void jump_to_rom(uint32 entry, uint32 context);
274		extern "C" void quit_emulator(void);
275		extern "C" void execute_68k(uint32 pc, M68kRegisters *r);
#	Line 252 | Line 283 | extern void paranoia_check(void);
283
284		#if EMULATED_PPC
285		/*
286	+	*  Return signal stack base
287	+	*/
288	+
289	+	uintptr SignalStackBase(void)
290	+	{
291	+	return sig_stack + SIG_STACK_SIZE;
292	+	}
293	+
294	+
295	+	/*
296		*  Atomic operations
297		*/
298
#	Line 292 | Line 333 | int atomic_or(int *var, int v)
333
334
335		/*
336	+	*  Memory management helpers
337	+	*/
338	+
339	+	static inline int vm_mac_acquire(uint32 addr, uint32 size)
340	+	{
341	+	return vm_acquire_fixed(Mac2HostAddr(addr), size);
342	+	}
343	+
344	+	static inline int vm_mac_release(uint32 addr, uint32 size)
345	+	{
346	+	return vm_release(Mac2HostAddr(addr), size);
347	+	}
348	+
349	+
350	+	/*
351		*  Main program
352		*/
353
#	Line 307 | Line 363 | static void usage(const char *prg_name)
363		int main(int argc, char **argv)
364		{
365		char str[256];
310	–	uint32 *boot_globs;
311	–	int16 i16;
366		int rom_fd;
367		FILE *proc_file;
368		const char *rom_path;
369		uint32 rom_size, actual;
370		uint8 *rom_tmp;
371		time_t now, expire;
372	+	bool memory_mapped_from_zero;
373
374		// Initialize variables
375		RAMBase = 0;
#	Line 325 | Line 380 | int main(int argc, char **argv)
380		printf(" %s\n", GetString(STR_ABOUT_TEXT2));
381
382		#if !EMULATED_PPC
383	+	#ifdef SYSTEM_CLOBBERS_R2
384		// Get TOC pointer
385	<	TOC = get_toc();
385	>	TOC = get_r2();
386	>	#endif
387	>	#ifdef SYSTEM_CLOBBERS_R13
388	>	// Get r13 register
389	>	R13 = get_r13();
390		#endif
331	–
332	–	#ifdef ENABLE_GTK
333	–	// Init GTK
334	–	gtk_set_locale();
335	–	gtk_init(&argc, &argv);
391		#endif
337	–
338	–	// Read preferences
339	–	PrefsInit(argc, argv);
392
393		// Parse command line arguments
394		for (int i=1; i<argc; i++) {
395		if (strcmp(argv[i], "--help") == 0) {
396		usage(argv[0]);
397	+	#ifndef USE_SDL_VIDEO
398		} else if (strcmp(argv[i], "--display") == 0) {
399		i++;
400		if (i < argc)
401		x_display_name = strdup(argv[i]);
402	<	} else if (argv[i][0] == '-') {
402	>	#endif
403	>	} else if (strcmp(argv[i], "--gui-connection") == 0) {
404	>	argv[i++] = NULL;
405	>	if (i < argc) {
406	>	gui_connection_path = argv[i];
407	>	argv[i] = NULL;
408	>	}
409	>	}
410	>	}
411	>
412	>	// Remove processed arguments
413	>	for (int i=1; i<argc; i++) {
414	>	int k;
415	>	for (k=i; k<argc; k++)
416	>	if (argv[k] != NULL)
417	>	break;
418	>	if (k > i) {
419	>	k -= i;
420	>	for (int j=i+k; j<argc; j++)
421	>	argv[j-k] = argv[j];
422	>	argc -= k;
423	>	}
424	>	}
425	>
426	>	// Connect to the external GUI
427	>	if (gui_connection_path) {
428	>	if ((gui_connection = rpc_init_client(gui_connection_path)) == NULL) {
429	>	fprintf(stderr, "Failed to initialize RPC client connection to the GUI\n");
430	>	return 1;
431	>	}
432	>	}
433	>
434	>	#ifdef ENABLE_GTK
435	>	if (!gui_connection) {
436	>	// Init GTK
437	>	gtk_set_locale();
438	>	gtk_init(&argc, &argv);
439	>	}
440	>	#endif
441	>
442	>	// Read preferences
443	>	PrefsInit(argc, argv);
444	>
445	>	// Any command line arguments left?
446	>	for (int i=1; i<argc; i++) {
447	>	if (argv[i][0] == '-') {
448		fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
449		usage(argv[0]);
450		}
451		}
452
453	+	#ifdef USE_SDL
454	+	// Initialize SDL system
455	+	int sdl_flags = 0;
456	+	#ifdef USE_SDL_VIDEO
457	+	sdl_flags |= SDL_INIT_VIDEO;
458	+	#endif
459	+	#ifdef USE_SDL_AUDIO
460	+	sdl_flags |= SDL_INIT_AUDIO;
461	+	#endif
462	+	assert(sdl_flags != 0);
463	+	if (SDL_Init(sdl_flags) == -1) {
464	+	char str[256];
465	+	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
466	+	ErrorAlert(str);
467	+	goto quit;
468	+	}
469	+	atexit(SDL_Quit);
470	+	#endif
471	+
472	+	#ifndef USE_SDL_VIDEO
473		// Open display
474		x_display = XOpenDisplay(x_display_name);
475		if (x_display == NULL) {
#	Line 365 | Line 483 | int main(int argc, char **argv)
483		// Fork out, so we can return from fullscreen mode when things get ugly
484		XF86DGAForkApp(DefaultScreen(x_display));
485		#endif
486	+	#endif
487
488		#ifdef ENABLE_MON
489		// Initialize mon
490		mon_init();
491		#endif
492
493	+	#if !EMULATED_PPC
494	+	// Create and install stacks for signal handlers
495	+	sig_stack.ss_sp = malloc(SIG_STACK_SIZE);
496	+	D(bug("Signal stack at %p\n", sig_stack.ss_sp));
497	+	if (sig_stack.ss_sp == NULL) {
498	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
499	+	goto quit;
500	+	}
501	+	sig_stack.ss_flags = 0;
502	+	sig_stack.ss_size = SIG_STACK_SIZE;
503	+	if (sigaltstack(&sig_stack, NULL) < 0) {
504	+	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
505	+	ErrorAlert(str);
506	+	goto quit;
507	+	}
508	+	extra_stack.ss_sp = malloc(SIG_STACK_SIZE);
509	+	D(bug("Extra stack at %p\n", extra_stack.ss_sp));
510	+	if (extra_stack.ss_sp == NULL) {
511	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
512	+	goto quit;
513	+	}
514	+	extra_stack.ss_flags = 0;
515	+	extra_stack.ss_size = SIG_STACK_SIZE;
516	+	#endif
517	+
518	+	#if !EMULATED_PPC
519	+	// Install SIGSEGV and SIGBUS handlers
520	+	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
521	+	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
522	+	sigsegv_action.sa_sigaction = sigsegv_handler;
523	+	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
524	+	#ifdef HAVE_SIGNAL_SA_RESTORER
525	+	sigsegv_action.sa_restorer = NULL;
526	+	#endif
527	+	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
528	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
529	+	ErrorAlert(str);
530	+	goto quit;
531	+	}
532	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
533	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGBUS", strerror(errno));
534	+	ErrorAlert(str);
535	+	goto quit;
536	+	}
537	+	#else
538	+	// Install SIGSEGV handler for CPU emulator
539	+	if (!sigsegv_install_handler(sigsegv_handler)) {
540	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
541	+	ErrorAlert(str);
542	+	goto quit;
543	+	}
544	+	#endif
545	+
546	+	// Initialize VM system
547	+	vm_init();
548	+
549		// Get system info
550		PVR = 0x00040000;                       // Default: 604
551		CPUClockSpeed = 100000000;      // Default: 100MHz
552		BusClockSpeed = 100000000;      // Default: 100MHz
553	<	#if !EMULATED_PPC
553	>	TimebaseSpeed =  25000000;      // Default:  25MHz
554	>	#if EMULATED_PPC
555	>	PVR = 0x000c0000;                       // Default: 7400 (with AltiVec)
556	>	#elif defined(__APPLE__) && defined(__MACH__)
557	>	proc_file = popen("ioreg -c IOPlatformDevice", "r");
558	>	if (proc_file) {
559	>	char line[256];
560	>	bool powerpc_node = false;
561	>	while (fgets(line, sizeof(line) - 1, proc_file)) {
562	>	// Read line
563	>	int len = strlen(line);
564	>	if (len == 0)
565	>	continue;
566	>	line[len - 1] = 0;
567	>
568	>	// Parse line
569	>	if (strstr(line, "o PowerPC,"))
570	>	powerpc_node = true;
571	>	else if (powerpc_node) {
572	>	uint32 value;
573	>	char head[256];
574	>	if (sscanf(line, "%[ |]\"cpu-version\" = <%x>", head, &value) == 2)
575	>	PVR = value;
576	>	else if (sscanf(line, "%[ |]\"clock-frequency\" = <%x>", head, &value) == 2)
577	>	CPUClockSpeed = value;
578	>	else if (sscanf(line, "%[ |]\"bus-frequency\" = <%x>", head, &value) == 2)
579	>	BusClockSpeed = value;
580	>	else if (sscanf(line, "%[ |]\"timebase-frequency\" = <%x>", head, &value) == 2)
581	>	TimebaseSpeed = value;
582	>	else if (strchr(line, '}'))
583	>	powerpc_node = false;
584	>	}
585	>	}
586	>	fclose(proc_file);
587	>	} else {
588	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
589	>	WarningAlert(str);
590	>	}
591	>	#else
592		proc_file = fopen("/proc/cpuinfo", "r");
593		if (proc_file) {
594	+	// CPU specs from Linux kernel
595	+	// TODO: make it more generic with features (e.g. AltiVec) and
596	+	// cache information and friends for NameRegistry
597	+	static const struct {
598	+	uint32 pvr_mask;
599	+	uint32 pvr_value;
600	+	const char *cpu_name;
601	+	}
602	+	cpu_specs[] = {
603	+	{ 0xffff0000, 0x00010000, "601" },
604	+	{ 0xffff0000, 0x00030000, "603" },
605	+	{ 0xffff0000, 0x00060000, "603e" },
606	+	{ 0xffff0000, 0x00070000, "603ev" },
607	+	{ 0xffff0000, 0x00040000, "604" },
608	+	{ 0xfffff000, 0x00090000, "604e" },
609	+	{ 0xffff0000, 0x00090000, "604r" },
610	+	{ 0xffff0000, 0x000a0000, "604ev" },
611	+	{ 0xffffffff, 0x00084202, "740/750" },
612	+	{ 0xfffff000, 0x00083000, "745/755" },
613	+	{ 0xfffffff0, 0x00080100, "750CX" },
614	+	{ 0xfffffff0, 0x00082200, "750CX" },
615	+	{ 0xfffffff0, 0x00082210, "750CXe" },
616	+	{ 0xffffff00, 0x70000100, "750FX" },
617	+	{ 0xffffffff, 0x70000200, "750FX" },
618	+	{ 0xffff0000, 0x70000000, "750FX" },
619	+	{ 0xffff0000, 0x70020000, "750GX" },
620	+	{ 0xffff0000, 0x00080000, "740/750" },
621	+	{ 0xffffffff, 0x000c1101, "7400 (1.1)" },
622	+	{ 0xffff0000, 0x000c0000, "7400" },
623	+	{ 0xffff0000, 0x800c0000, "7410" },
624	+	{ 0xffffffff, 0x80000200, "7450" },
625	+	{ 0xffffffff, 0x80000201, "7450" },
626	+	{ 0xffff0000, 0x80000000, "7450" },
627	+	{ 0xffffff00, 0x80010100, "7455" },
628	+	{ 0xffffffff, 0x80010200, "7455" },
629	+	{ 0xffff0000, 0x80010000, "7455" },
630	+	{ 0xffff0000, 0x80020000, "7457" },
631	+	{ 0xffff0000, 0x80030000, "7447A" },
632	+	{ 0xffff0000, 0x80040000, "7448" },
633	+	{ 0x7fff0000, 0x00810000, "82xx" },
634	+	{ 0x7fff0000, 0x00820000, "8280" },
635	+	{ 0xffff0000, 0x00400000, "Power3 (630)" },
636	+	{ 0xffff0000, 0x00410000, "Power3 (630+)" },
637	+	{ 0xffff0000, 0x00360000, "I-star" },
638	+	{ 0xffff0000, 0x00370000, "S-star" },
639	+	{ 0xffff0000, 0x00350000, "Power4" },
640	+	{ 0xffff0000, 0x00390000, "PPC970" },
641	+	{ 0xffff0000, 0x003c0000, "PPC970FX" },
642	+	{ 0xffff0000, 0x003a0000, "POWER5 (gr)" },
643	+	{ 0xffff0000, 0x003b0000, "POWER5 (gs)" },
644	+	{ 0, 0, 0 }
645	+	};
646	+
647		char line[256];
648		while(fgets(line, 255, proc_file)) {
649		// Read line
#	Line 389 | Line 655 | int main(int argc, char **argv)
655		// Parse line
656		int i;
657		char value[256];
658	<	if (sscanf(line, "cpu : %s", value) == 1) {
659	<	if (strcmp(value, "601") == 0)
660	<	PVR = 0x00010000;
661	<	else if (strcmp(value, "603") == 0)
662	<	PVR = 0x00030000;
663	<	else if (strcmp(value, "604") == 0)
664	<	PVR = 0x00040000;
665	<	else if (strcmp(value, "603e") == 0)
666	<	PVR = 0x00060000;
667	<	else if (strcmp(value, "603ev") == 0)
668	<	PVR = 0x00070000;
403	<	else if (strcmp(value, "604e") == 0)
404	<	PVR = 0x00090000;
405	<	else if (strcmp(value, "604ev5") == 0)
406	<	PVR = 0x000a0000;
407	<	else if (strcmp(value, "750") == 0)
408	<	PVR = 0x00080000;
409	<	else if (strcmp(value, "821") == 0)
410	<	PVR = 0x00320000;
411	<	else if (strcmp(value, "860") == 0)
412	<	PVR = 0x00500000;
413	<	else
658	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
659	>	// Search by name
660	>	const char *cpu_name = NULL;
661	>	for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
662	>	if (strcmp(cpu_specs[i].cpu_name, value) == 0) {
663	>	cpu_name = cpu_specs[i].cpu_name;
664	>	PVR = cpu_specs[i].pvr_value;
665	>	break;
666	>	}
667	>	}
668	>	if (cpu_name == NULL)
669		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
670	+	else
671	+	printf("Found a PowerPC %s processor\n", cpu_name);
672		}
673		if (sscanf(line, "clock : %dMHz", &i) == 1)
674		CPUClockSpeed = BusClockSpeed = i * 1000000;
#	Line 421 | Line 678 | int main(int argc, char **argv)
678		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
679		WarningAlert(str);
680		}
681	+
682	+	// Get actual bus frequency
683	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
684	+	if (proc_file) {
685	+	union { uint8 b[4]; uint32 l; } value;
686	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
687	+	BusClockSpeed = value.l;
688	+	fclose(proc_file);
689	+	}
690	+
691	+	// Get actual timebase frequency
692	+	TimebaseSpeed = BusClockSpeed / 4;
693	+	DIR *cpus_dir;
694	+	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
695	+	struct dirent *cpu_entry;
696	+	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
697	+	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
698	+	char timebase_freq_node[256];
699	+	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
700	+	proc_file = fopen(timebase_freq_node, "r");
701	+	if (proc_file) {
702	+	union { uint8 b[4]; uint32 l; } value;
703	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
704	+	TimebaseSpeed = value.l;
705	+	fclose(proc_file);
706	+	}
707	+	}
708	+	}
709	+	closedir(cpus_dir);
710	+	}
711		#endif
712	+	// Remap any newer G4/G5 processor to plain G4 for compatibility
713	+	switch (PVR >> 16) {
714	+	case 0x8000:                            // 7450
715	+	case 0x8001:                            // 7455
716	+	case 0x8002:                            // 7457
717	+	case 0x8003:                            // 7447A
718	+	case 0x8004:                            // 7448
719	+	case 0x0039:                            //  970
720	+	case 0x003c:                            //  970FX
721	+	PVR = 0x000c0000;               // 7400
722	+	break;
723	+	}
724		D(bug("PVR: %08x (assumed)\n", PVR));
725
726		// Init system routines
#	Line 445 | Line 744 | int main(int argc, char **argv)
744		goto quit;
745		}
746
448	–	// Create Low Memory area (0x0000..0x3000)
449	–	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
450	–	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
451	–	ErrorAlert(str);
452	–	goto quit;
453	–	}
454	–	lm_area_mapped = true;
455	–
747		// Create areas for Kernel Data
748	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
749	<	if (kernel_area == -1) {
750	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
748	>	if (!kernel_data_init())
749	>	goto quit;
750	>	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
751	>	emulator_data = &kernel_data->ed;
752	>	KernelDataAddr = KERNEL_DATA_BASE;
753	>	D(bug("Kernel Data at %p (%08x)\n", kernel_data, KERNEL_DATA_BASE));
754	>	D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
755	>
756	>	// Create area for DR Cache
757	>	if (vm_mac_acquire(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
758	>	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
759		ErrorAlert(str);
760		goto quit;
761		}
762	<	if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) {
763	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
762	>	dr_emulator_area_mapped = true;
763	>	if (vm_mac_acquire(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
764	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
765		ErrorAlert(str);
766		goto quit;
767		}
768	<	if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) {
769	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
768	>	dr_cache_area_mapped = true;
769	>	#if !EMULATED_PPC
770	>	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
771	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
772		ErrorAlert(str);
773		goto quit;
774		}
775	<	kernel_data = (KernelData *)0x68ffe000;
776	<	emulator_data = &kernel_data->ed;
777	<	KernelDataAddr = (uint32)kernel_data;
476	<	D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
775	>	#endif
776	>	DRCacheAddr = DR_CACHE_BASE;
777	>	D(bug("DR Cache at %p\n", DRCacheAddr));
778
779		// Create area for SheepShaver data
780	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
780	>	if (!SheepMem::Init()) {
781		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
782		ErrorAlert(str);
783		goto quit;
784		}
484	–	SheepStack1Base = SHEEP_BASE + 0x10000;
485	–	SheepStack2Base = SheepStack1Base + 0x10000;
486	–	SheepThunksBase = SheepStack2Base + 0x1000;
487	–	sheep_area_mapped = true;
785
786		// Create area for Mac ROM
787	<	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
787	>	if (vm_mac_acquire(ROM_BASE, ROM_AREA_SIZE) < 0) {
788		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
789		ErrorAlert(str);
790		goto quit;
791		}
792	<	#if !EMULATED_PPC || defined(__powerpc__)
793	<	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
792	>	ROMBaseHost = Mac2HostAddr(ROM_BASE);
793	>	#if !EMULATED_PPC
794	>	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
795		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
796		ErrorAlert(str);
797		goto quit;
798		}
799		#endif
800		rom_area_mapped = true;
801	<	D(bug("ROM area at %08x\n", ROM_BASE));
801	>	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROM_BASE));
802
803		// Create area for Mac RAM
804		RAMSize = PrefsFindInt32("ramsize");
#	Line 508 | Line 806 | int main(int argc, char **argv)
806		WarningAlert(GetString(STR_SMALL_RAM_WARN));
807		RAMSize = 8*1024*1024;
808		}
809	<
810	<	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
811	<	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
812	<	ErrorAlert(str);
813	<	goto quit;
809	>	memory_mapped_from_zero = false;
810	>	#if REAL_ADDRESSING && HAVE_LINKER_SCRIPT
811	>	if (vm_mac_acquire(0, RAMSize) == 0) {
812	>	D(bug("Could allocate RAM from 0x0000\n"));
813	>	RAMBase = 0;
814	>	memory_mapped_from_zero = true;
815		}
816	+	#endif
817	+	if (!memory_mapped_from_zero) {
818	+	#ifndef PAGEZERO_HACK
819	+	// Create Low Memory area (0x0000..0x3000)
820	+	if (vm_mac_acquire(0, 0x3000) < 0) {
821	+	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
822	+	ErrorAlert(str);
823	+	goto quit;
824	+	}
825	+	lm_area_mapped = true;
826	+	#endif
827	+	if (vm_mac_acquire(RAM_BASE, RAMSize) < 0) {
828	+	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
829	+	ErrorAlert(str);
830	+	goto quit;
831	+	}
832	+	RAMBase = RAM_BASE;
833	+	}
834	+	RAMBaseHost = Mac2HostAddr(RAMBase);
835		#if !EMULATED_PPC
836	<	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
836	>	if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
837		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
838		ErrorAlert(str);
839		goto quit;
840		}
841		#endif
524	–	RAMBase = RAM_BASE;
842		ram_area_mapped = true;
843	<	D(bug("RAM area at %08x\n", RAMBase));
843	>	D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
844
845		if (RAMBase > ROM_BASE) {
846		ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
#	Line 559 | Line 876 | int main(int argc, char **argv)
876		}
877		delete[] rom_tmp;
878
879	<	// Load NVRAM
880	<	XPRAMInit();
564	<
565	<	// Set boot volume
566	<	i16 = PrefsFindInt32("bootdrive");
567	<	XPRAM[0x1378] = i16 >> 8;
568	<	XPRAM[0x1379] = i16 & 0xff;
569	<	i16 = PrefsFindInt32("bootdriver");
570	<	XPRAM[0x137a] = i16 >> 8;
571	<	XPRAM[0x137b] = i16 & 0xff;
572	<
573	<	// Create BootGlobs at top of Mac memory
574	<	memset((void *)(RAMBase + RAMSize - 4096), 0, 4096);
575	<	BootGlobsAddr = RAMBase + RAMSize - 0x1c;
576	<	boot_globs = (uint32 *)BootGlobsAddr;
577	<	boot_globs[-5] = htonl(RAMBase + RAMSize);      // MemTop
578	<	boot_globs[0] = htonl(RAMBase);                         // First RAM bank
579	<	boot_globs[1] = htonl(RAMSize);
580	<	boot_globs[2] = htonl((uint32)-1);                      // End of bank table
581	<
582	<	// Init drivers
583	<	SonyInit();
584	<	DiskInit();
585	<	CDROMInit();
586	<	SCSIInit();
587	<
588	<	// Init external file system
589	<	ExtFSInit();
590	<
591	<	// Init audio
592	<	AudioInit();
593	<
594	<	// Init network
595	<	EtherInit();
596	<
597	<	// Init serial ports
598	<	SerialInit();
599	<
600	<	// Init Time Manager
601	<	TimerInit();
602	<
603	<	// Init clipboard
604	<	ClipInit();
605	<
606	<	// Init video
607	<	if (!VideoInit())
608	<	goto quit;
609	<
610	<	// Install ROM patches
611	<	if (!PatchROM()) {
612	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
879	>	// Initialize everything
880	>	if (!InitAll())
881		goto quit;
882	<	}
882	>	D(bug("Initialization complete\n"));
883
884		// Clear caches (as we loaded and patched code) and write protect ROM
885		#if !EMULATED_PPC
886	<	MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
619	<	#endif
620	<	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
621	<
622	<	// Initialize Kernel Data
623	<	memset(kernel_data, 0, sizeof(KernelData));
624	<	if (ROMType == ROMTYPE_NEWWORLD) {
625	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
626	<	static uint8 vector_lookup_tbl[128];
627	<	static uint8 vector_mask_tbl[64];
628	<	memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
629	<	memset(vector_lookup_tbl, 0, 128);
630	<	memset(vector_mask_tbl, 0, 64);
631	<	kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
632	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree);        // OF device tree base
633	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
634	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
635	<	kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
636	<	kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
637	<	kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
638	<	kernel_data->v[0xc24 >> 2] = htonl(RAMSize);
639	<	kernel_data->v[0xc30 >> 2] = htonl(RAMSize);
640	<	kernel_data->v[0xc34 >> 2] = htonl(RAMSize);
641	<	kernel_data->v[0xc38 >> 2] = htonl(0x00010020);
642	<	kernel_data->v[0xc3c >> 2] = htonl(0x00200001);
643	<	kernel_data->v[0xc40 >> 2] = htonl(0x00010000);
644	<	kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
645	<	kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
646	<	kernel_data->v[0xf60 >> 2] = htonl(PVR);
647	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
648	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
649	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
650	<	} else {
651	<	kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
652	<	kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
653	<	kernel_data->v[0xc90 >> 2] = htonl(RAMSize);
654	<	kernel_data->v[0xc94 >> 2] = htonl(RAMSize);
655	<	kernel_data->v[0xc98 >> 2] = htonl(0x00010020);
656	<	kernel_data->v[0xc9c >> 2] = htonl(0x00200001);
657	<	kernel_data->v[0xca0 >> 2] = htonl(0x00010000);
658	<	kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
659	<	kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
660	<	kernel_data->v[0xf80 >> 2] = htonl(PVR);
661	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
662	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
663	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
664	<	}
665	<
666	<	// Initialize extra low memory
667	<	D(bug("Initializing Low Memory...\n"));
668	<	memset(NULL, 0, 0x3000);
669	<	WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
670	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data);                    // For trap replacement routines
671	<	WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
672	<	WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
673	<	WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
674	<	#if EMULATED_PPC
675	<	WriteMacInt32(XLM_ETHER_INIT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_INIT));
676	<	WriteMacInt32(XLM_ETHER_TERM, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_TERM));
677	<	WriteMacInt32(XLM_ETHER_OPEN, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_OPEN));
678	<	WriteMacInt32(XLM_ETHER_CLOSE, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_CLOSE));
679	<	WriteMacInt32(XLM_ETHER_WPUT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_WPUT));
680	<	WriteMacInt32(XLM_ETHER_RSRV, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_RSRV));
681	<	WriteMacInt32(XLM_VIDEO_DOIO, POWERPC_NATIVE_OP_FUNC(NATIVE_VIDEO_DO_DRIVER_IO));
682	<	#else
683	<	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                    // TOC pointer of emulator
684	<	WriteMacInt32(XLM_ETHER_INIT, (uint32)InitStreamModule);                // DLPI ethernet driver functions
685	<	WriteMacInt32(XLM_ETHER_TERM, (uint32)TerminateStreamModule);
686	<	WriteMacInt32(XLM_ETHER_OPEN, (uint32)ether_open);
687	<	WriteMacInt32(XLM_ETHER_CLOSE, (uint32)ether_close);
688	<	WriteMacInt32(XLM_ETHER_WPUT, (uint32)ether_wput);
689	<	WriteMacInt32(XLM_ETHER_RSRV, (uint32)ether_rsrv);
690	<	WriteMacInt32(XLM_VIDEO_DOIO, (uint32)VideoDoDriverIO);
886	>	flush_icache_range(ROM_BASE, ROM_BASE + ROM_AREA_SIZE);
887		#endif
888	<	D(bug("Low Memory initialized\n"));
888	>	vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
889
890		// Start 60Hz thread
891	+	tick_thread_cancel = false;
892		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
893		D(bug("Tick thread installed (%ld)\n", tick_thread));
894
895		// Start NVRAM watchdog thread
896		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
897	+	nvram_thread_cancel = false;
898		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
899		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
900
901		#if !EMULATED_PPC
704	–	// Create and install stacks for signal handlers
705	–	sig_stack = malloc(SIG_STACK_SIZE);
706	–	D(bug("Signal stack at %p\n", sig_stack));
707	–	if (sig_stack == NULL) {
708	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
709	–	goto quit;
710	–	}
711	–	extra_stack = malloc(SIG_STACK_SIZE);
712	–	D(bug("Extra stack at %p\n", extra_stack));
713	–	if (extra_stack == NULL) {
714	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
715	–	goto quit;
716	–	}
717	–	struct sigaltstack new_stack;
718	–	new_stack.ss_sp = sig_stack;
719	–	new_stack.ss_flags = 0;
720	–	new_stack.ss_size = SIG_STACK_SIZE;
721	–	if (sigaltstack(&new_stack, NULL) < 0) {
722	–	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
723	–	ErrorAlert(str);
724	–	goto quit;
725	–	}
726	–	#endif
727	–
728	–	#if !EMULATED_PPC
729	–	// Install SIGSEGV handler
730	–	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
731	–	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
732	–	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
733	–	sigsegv_action.sa_flags = SA_ONSTACK;
734	–	sigsegv_action.sa_restorer = NULL;
735	–	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
736	–	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
737	–	ErrorAlert(str);
738	–	goto quit;
739	–	}
740	–
902		// Install SIGILL handler
903		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
904		sigaddset(&sigill_action.sa_mask, SIGUSR2);
905	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
906	<	sigill_action.sa_flags = SA_ONSTACK;
905	>	sigill_action.sa_sigaction = sigill_handler;
906	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
907	>	#ifdef HAVE_SIGNAL_SA_RESTORER
908		sigill_action.sa_restorer = NULL;
909	+	#endif
910		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
911	<	sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
911	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
912		ErrorAlert(str);
913		goto quit;
914		}
915		#endif
916
917	+	#if !EMULATED_PPC
918		// Install interrupt signal handler
919		sigemptyset(&sigusr2_action.sa_mask);
920	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
921	<	sigusr2_action.sa_flags = 0;
922	<	#if !EMULATED_PPC
759	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
760	<	#endif
920	>	sigusr2_action.sa_sigaction = sigusr2_handler_init;
921	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
922	>	#ifdef HAVE_SIGNAL_SA_RESTORER
923		sigusr2_action.sa_restorer = NULL;
924	+	#endif
925		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
926	<	sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
926	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGUSR2", strerror(errno));
927		ErrorAlert(str);
928		goto quit;
929		}
930	+	#endif
931
932		// Get my thread ID and execute MacOS thread function
933		emul_thread = pthread_self();
#	Line 789 | Line 953 | static void Quit(void)
953
954		// Stop 60Hz thread
955		if (tick_thread_active) {
956	+	tick_thread_cancel = true;
957		pthread_cancel(tick_thread);
958		pthread_join(tick_thread, NULL);
959		}
960
961		// Stop NVRAM watchdog thread
962		if (nvram_thread_active) {
963	+	nvram_thread_cancel = true;
964		pthread_cancel(nvram_thread);
965		pthread_join(nvram_thread, NULL);
966		}
967
968		#if !EMULATED_PPC
969	<	// Uninstall SIGSEGV handler
969	>	// Uninstall SIGSEGV and SIGBUS handlers
970		sigemptyset(&sigsegv_action.sa_mask);
971		sigsegv_action.sa_handler = SIG_DFL;
972		sigsegv_action.sa_flags = 0;
973		sigaction(SIGSEGV, &sigsegv_action, NULL);
974	+	sigaction(SIGBUS, &sigsegv_action, NULL);
975
976		// Uninstall SIGILL handler
977		sigemptyset(&sigill_action.sa_mask);
978		sigill_action.sa_handler = SIG_DFL;
979		sigill_action.sa_flags = 0;
980		sigaction(SIGILL, &sigill_action, NULL);
814	–	#endif
815	–
816	–	// Save NVRAM
817	–	XPRAMExit();
818	–
819	–	// Exit clipboard
820	–	ClipExit();
821	–
822	–	// Exit Time Manager
823	–	TimerExit();
981
982	<	// Exit serial
983	<	SerialExit();
984	<
985	<	// Exit network
986	<	EtherExit();
987	<
831	<	// Exit audio
832	<	AudioExit();
833	<
834	<	// Exit video
835	<	VideoExit();
982	>	// Delete stacks for signal handlers
983	>	if (sig_stack.ss_sp)
984	>	free(sig_stack.ss_sp);
985	>	if (extra_stack.ss_sp)
986	>	free(extra_stack.ss_sp);
987	>	#endif
988
989	<	// Exit external file system
990	<	ExtFSExit();
989	>	// Deinitialize everything
990	>	ExitAll();
991
992	<	// Exit drivers
993	<	SCSIExit();
842	<	CDROMExit();
843	<	DiskExit();
844	<	SonyExit();
992	>	// Delete SheepShaver globals
993	>	SheepMem::Exit();
994
995		// Delete RAM area
996		if (ram_area_mapped)
997	<	vm_release((char *)RAM_BASE, RAMSize);
997	>	vm_mac_release(RAMBase, RAMSize);
998
999		// Delete ROM area
1000		if (rom_area_mapped)
1001	<	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
1001	>	vm_mac_release(ROM_BASE, ROM_AREA_SIZE);
1002	>
1003	>	// Delete DR cache areas
1004	>	if (dr_emulator_area_mapped)
1005	>	vm_mac_release(DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
1006	>	if (dr_cache_area_mapped)
1007	>	vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
1008
1009		// Delete Kernel Data area
1010	<	if (kernel_area >= 0) {
856	<	shmdt((void *)KERNEL_DATA_BASE);
857	<	shmdt((void *)KERNEL_DATA2_BASE);
858	<	shmctl(kernel_area, IPC_RMID, NULL);
859	<	}
1010	>	kernel_data_exit();
1011
1012		// Delete Low Memory area
1013		if (lm_area_mapped)
1014	<	munmap((char *)0x0000, 0x3000);
1014	>	vm_mac_release(0, 0x3000);
1015
1016		// Close /dev/zero
1017		if (zero_fd > 0)
#	Line 878 | Line 1029 | static void Quit(void)
1029		#endif
1030
1031		// Close X11 server connection
1032	+	#ifndef USE_SDL_VIDEO
1033		if (x_display)
1034		XCloseDisplay(x_display);
1035	+	#endif
1036	+
1037	+	// Notify GUI we are about to leave
1038	+	if (gui_connection) {
1039	+	if (rpc_method_invoke(gui_connection, RPC_METHOD_EXIT, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
1040	+	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID);
1041	+	}
1042
1043		exit(0);
1044		}
1045
1046
1047		/*
1048	+	*  Initialize Kernel Data segments
1049	+	*/
1050	+
1051	+	static bool kernel_data_init(void)
1052	+	{
1053	+	char str[256];
1054	+	uint32 kernel_area_size = (KERNEL_AREA_SIZE + SHMLBA - 1) & -SHMLBA;
1055	+
1056	+	kernel_area = shmget(IPC_PRIVATE, kernel_area_size, 0600);
1057	+	if (kernel_area == -1) {
1058	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1059	+	ErrorAlert(str);
1060	+	return false;
1061	+	}
1062	+	void *kernel_addr = Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA);
1063	+	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1064	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1065	+	ErrorAlert(str);
1066	+	return false;
1067	+	}
1068	+	kernel_addr = Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA);
1069	+	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1070	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1071	+	ErrorAlert(str);
1072	+	return false;
1073	+	}
1074	+	return true;
1075	+	}
1076	+
1077	+
1078	+	/*
1079	+	*  Deallocate Kernel Data segments
1080	+	*/
1081	+
1082	+	static void kernel_data_exit(void)
1083	+	{
1084	+	if (kernel_area >= 0) {
1085	+	shmdt(Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA));
1086	+	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA));
1087	+	shmctl(kernel_area, IPC_RMID, NULL);
1088	+	}
1089	+	}
1090	+
1091	+
1092	+	/*
1093		*  Jump into Mac ROM, start 680x0 emulator
1094		*/
1095
#	Line 954 | Line 1158 | void Execute68kTrap(uint16 trap, M68kReg
1158		uint16 proc[2] = {trap, M68K_RTS};
1159		Execute68k((uint32)proc, r);
1160		}
957	–
958	–
959	–	/*
960	–	*  Execute PPC code from EMUL_OP routine (real mode switch)
961	–	*/
962	–
963	–	void ExecutePPC(void (*func)())
964	–	{
965	–	uint32 tvect[2] = {(uint32)func, 0};    // Fake TVECT
966	–	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
967	–	M68kRegisters r;
968	–	Execute68k((uint32)&desc, &r);
969	–	}
1161		#endif
1162
1163
#	Line 985 | Line 1176 | void QuitEmulator(void)
1176
1177
1178		/*
988	–	*  Pause/resume emulator
989	–	*/
990	–
991	–	void PauseEmulator(void)
992	–	{
993	–	pthread_kill(emul_thread, SIGSTOP);
994	–	}
995	–
996	–	void ResumeEmulator(void)
997	–	{
998	–	pthread_kill(emul_thread, SIGCONT);
999	–	}
1000	–
1001	–
1002	–	/*
1179		*  Dump 68k registers
1180		*/
1181
#	Line 1027 | Line 1203 | void Dump68kRegs(M68kRegisters *r)
1203		*  Make code executable
1204		*/
1205
1206	<	void MakeExecutable(int dummy, void *start, uint32 length)
1206	>	void MakeExecutable(int dummy, uint32 start, uint32 length)
1207		{
1208	<	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1208	>	if ((start >= ROM_BASE) && (start < (ROM_BASE + ROM_SIZE)))
1209		return;
1210		#if EMULATED_PPC
1211	<	FlushCodeCache((uintptr)start, (uintptr)start + length);
1211	>	FlushCodeCache(start, start + length);
1212		#else
1213	<	flush_icache_range(start, (void *)((uintptr)start + length));
1213	>	flush_icache_range(start, start + length);
1214		#endif
1215		}
1216
1217
1218		/*
1219	<	*  Patch things after system startup (gets called by disk driver accRun routine)
1219	>	*  NVRAM watchdog thread (saves NVRAM every minute)
1220		*/
1221
1222	<	void PatchAfterStartup(void)
1222	>	static void nvram_watchdog(void)
1223		{
1224	<	#if EMULATED_PPC
1225	<	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1226	<	#else
1227	<	ExecutePPC(VideoInstallAccel);
1052	<	#endif
1053	<	InstallExtFS();
1224	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1225	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1226	>	SaveXPRAM();
1227	>	}
1228		}
1229
1056	–
1057	–	/*
1058	–	*  NVRAM watchdog thread (saves NVRAM every minute)
1059	–	*/
1060	–
1230		static void *nvram_func(void *arg)
1231		{
1232	<	struct timespec req = {60, 0};  // 1 minute
1233	<
1234	<	for (;;) {
1235	<	pthread_testcancel();
1067	<	nanosleep(&req, NULL);
1068	<	pthread_testcancel();
1069	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1070	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1071	<	SaveXPRAM();
1072	<	}
1232	>	while (!nvram_thread_cancel) {
1233	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1234	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1235	>	nvram_watchdog();
1236		}
1237		return NULL;
1238		}
#	Line 1082 | Line 1245 | static void *nvram_func(void *arg)
1245		static void *tick_func(void *arg)
1246		{
1247		int tick_counter = 0;
1248	<	struct timespec req = {0, 16625000};
1248	>	uint64 start = GetTicks_usec();
1249	>	int64 ticks = 0;
1250	>	uint64 next = GetTicks_usec();
1251
1252	<	for (;;) {
1252	>	while (!tick_thread_cancel) {
1253
1254		// Wait
1255	<	nanosleep(&req, NULL);
1255	>	next += 16625;
1256	>	int64 delay = next - GetTicks_usec();
1257	>	if (delay > 0)
1258	>	Delay_usec(delay);
1259	>	else if (delay < -16625)
1260	>	next = GetTicks_usec();
1261	>	ticks++;
1262
1263		#if !EMULATED_PPC
1264		// Did we crash?
1265		if (emul_thread_fatal) {
1266
1267		// Yes, dump registers
1268	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1268	>	sigregs *r = &sigsegv_regs;
1269		char str[256];
1270	<	sprintf(str, "SIGSEGV\n"
1270	>	if (crash_reason == NULL)
1271	>	crash_reason = "SIGSEGV";
1272	>	sprintf(str, "%s\n"
1273		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1274		"  xer %08lx     cr %08lx  \n"
1275		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1107 | Line 1280 | static void *tick_func(void *arg)
1280		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1281		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1282		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1283	+	crash_reason,
1284		r->nip, r->link, r->ctr, r->msr,
1285		r->xer, r->ccr,
1286		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1142 | Line 1316 | static void *tick_func(void *arg)
1316		TriggerInterrupt();
1317		}
1318		}
1319	+
1320	+	uint64 end = GetTicks_usec();
1321	+	D(bug("%lld ticks in %lld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1322		return NULL;
1323		}
1324
#	Line 1191 | Line 1368 | struct B2_mutex {
1368		pthread_mutexattr_init(&attr);
1369		// Initialize the mutex for priority inheritance --
1370		// required for accurate timing.
1371	<	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1371	>	#if defined(HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL) && !defined(__CYGWIN__)
1372		pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1373		#endif
1374		#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
#	Line 1262 | Line 1439 | void B2_delete_mutex(B2_mutex *mutex)
1439		*  Trigger signal USR2 from another thread
1440		*/
1441
1442	<	#if !EMULATED_PPC || ASYNC_IRQ
1442	>	#if !EMULATED_PPC
1443		void TriggerInterrupt(void)
1444		{
1445	<	if (ready_for_signals)
1445	>	if (ready_for_signals) {
1446	>	idle_resume();
1447		pthread_kill(emul_thread, SIGUSR2);
1448	+	}
1449		}
1450		#endif
1451
#	Line 1294 | Line 1473 | void ClearInterruptFlag(uint32 flag)
1473
1474		void DisableInterrupt(void)
1475		{
1476	+	#if EMULATED_PPC
1477	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1478	+	#else
1479		atomic_add((int *)XLM_IRQ_NEST, 1);
1480	+	#endif
1481		}
1482
1483
#	Line 1304 | Line 1487 | void DisableInterrupt(void)
1487
1488		void EnableInterrupt(void)
1489		{
1490	+	#if EMULATED_PPC
1491	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1492	+	#else
1493		atomic_add((int *)XLM_IRQ_NEST, -1);
1494	+	#endif
1495		}
1496
1497
#	Line 1312 | Line 1499 | void EnableInterrupt(void)
1499		*  USR2 handler
1500		*/
1501
1502	<	#if EMULATED_PPC
1503	<	static void sigusr2_handler(int sig)
1502	>	#if !EMULATED_PPC
1503	>	void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1504		{
1505	<	#if ASYNC_IRQ
1506	<	extern void HandleInterrupt(void);
1507	<	HandleInterrupt();
1505	>	machine_regs *r = MACHINE_REGISTERS(scp);
1506	>
1507	>	#ifdef SYSTEM_CLOBBERS_R2
1508	>	// Restore pointer to Thread Local Storage
1509	>	set_r2(TOC);
1510	>	#endif
1511	>	#ifdef SYSTEM_CLOBBERS_R13
1512	>	// Restore pointer to .sdata section
1513	>	set_r13(R13);
1514	>	#endif
1515	>
1516	>	#ifdef USE_SDL_VIDEO
1517	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1518	>	SDL_PumpEvents();
1519		#endif
1322	–	}
1323	–	#else
1324	–	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1325	–	{
1326	–	pt_regs *r = sc->regs;
1520
1521		// Do nothing if interrupts are disabled
1522		if (*(int32 *)XLM_IRQ_NEST > 0)
#	Line 1337 | Line 1530 | static void sigusr2_handler(int sig, sig
1530		case MODE_68K:
1531		// 68k emulator active, trigger 68k interrupt level 1
1532		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1533	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1533	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1534		break;
1535
1536		#if INTERRUPTS_IN_NATIVE_MODE
1537		case MODE_NATIVE:
1538		// 68k emulator inactive, in nanokernel?
1539	<	if (r->gpr[1] != KernelDataAddr) {
1539	>	if (r->gpr(1) != KernelDataAddr) {
1540	>
1541	>	// Set extra stack for SIGSEGV handler
1542	>	sigaltstack(&extra_stack, NULL);
1543	>
1544		// Prepare for 68k interrupt level 1
1545		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1546		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1547
1548		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1549	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1549	>	DisableInterrupt();
1550		if (ROMType == ROMTYPE_NEWWORLD)
1551		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1552		else
1553		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1554	+
1555	+	// Reset normal stack
1556	+	sigaltstack(&sig_stack, NULL);
1557		}
1558		break;
1559		#endif
#	Line 1364 | Line 1564 | static void sigusr2_handler(int sig, sig
1564		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1565
1566		// Set extra stack for SIGSEGV handler
1567	<	struct sigaltstack new_stack;
1368	<	new_stack.ss_sp = extra_stack;
1369	<	new_stack.ss_flags = 0;
1370	<	new_stack.ss_size = SIG_STACK_SIZE;
1371	<	sigaltstack(&new_stack, NULL);
1567	>	sigaltstack(&extra_stack, NULL);
1568		#if 1
1569		// Execute full 68k interrupt routine
1570		M68kRegisters r;
#	Line 1390 | Line 1586 | static void sigusr2_handler(int sig, sig
1586		if (InterruptFlags & INTFLAG_VIA) {
1587		ClearInterruptFlag(INTFLAG_VIA);
1588		ADBInterrupt();
1589	<	ExecutePPC(VideoVBL);
1589	>	ExecuteNative(NATIVE_VIDEO_VBL);
1590		}
1591		}
1592		#endif
1593	<	// Reset normal signal stack
1594	<	new_stack.ss_sp = sig_stack;
1399	<	new_stack.ss_flags = 0;
1400	<	new_stack.ss_size = SIG_STACK_SIZE;
1401	<	sigaltstack(&new_stack, NULL);
1593	>	// Reset normal stack
1594	>	sigaltstack(&sig_stack, NULL);
1595		}
1596		break;
1597		#endif
#	Line 1412 | Line 1605 | static void sigusr2_handler(int sig, sig
1605		*/
1606
1607		#if !EMULATED_PPC
1608	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1608	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1609		{
1610	<	pt_regs *r = sc->regs;
1610	>	machine_regs *r = MACHINE_REGISTERS(scp);
1611
1612		// Get effective address
1613	<	uint32 addr = r->dar;
1613	>	uint32 addr = r->dar();
1614
1615	+	#ifdef SYSTEM_CLOBBERS_R2
1616	+	// Restore pointer to Thread Local Storage
1617	+	set_r2(TOC);
1618	+	#endif
1619	+	#ifdef SYSTEM_CLOBBERS_R13
1620	+	// Restore pointer to .sdata section
1621	+	set_r13(R13);
1622	+	#endif
1623	+
1624		#if ENABLE_VOSF
1625		// Handle screen fault.
1626		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1627	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1627	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1628		return;
1629		#endif
1630
1631		num_segv++;
1632
1633	<	// Fault in Mac ROM or RAM?
1634	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1633	>	// Fault in Mac ROM or RAM or DR Cache?
1634	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize)) || (r->pc() >= DR_CACHE_BASE && r->pc() < (DR_CACHE_BASE + DR_CACHE_SIZE));
1635		if (mac_fault) {
1636
1637		// "VM settings" during MacOS 8 installation
1638	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1639	<	r->nip += 4;
1640	<	r->gpr[8] = 0;
1638	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1639	>	r->pc() += 4;
1640	>	r->gpr(8) = 0;
1641		return;
1642
1643		// MacOS 8.5 installation
1644	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1645	<	r->nip += 4;
1646	<	r->gpr[8] = 0;
1644	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1645	>	r->pc() += 4;
1646	>	r->gpr(8) = 0;
1647		return;
1648
1649		// MacOS 8 serial drivers on startup
1650	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1651	<	r->nip += 4;
1652	<	r->gpr[8] = 0;
1650	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1651	>	r->pc() += 4;
1652	>	r->gpr(8) = 0;
1653		return;
1654
1655		// MacOS 8.1 serial drivers on startup
1656	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1657	<	r->nip += 4;
1656	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1657	>	r->pc() += 4;
1658	>	return;
1659	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1660	>	r->pc() += 4;
1661		return;
1662	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1663	<	r->nip += 4;
1662	>
1663	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1664	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1665	>	r->pc() += 4;
1666	>	return;
1667	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1668	>	r->pc() += 4;
1669		return;
1670		}
1671
1672		// Get opcode and divide into fields
1673	<	uint32 opcode = *((uint32 *)r->nip);
1673	>	uint32 opcode = *((uint32 *)r->pc());
1674		uint32 primop = opcode >> 26;
1675		uint32 exop = (opcode >> 1) & 0x3ff;
1676		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1549 | Line 1759 | static void sigsegv_handler(int sig, sig
1759		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1760		case 45:        // sthu
1761		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1762	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1763	+	case 46:        // lmw
1764	+	if ((addr % 4) != 0) {
1765	+	uint32 ea = addr;
1766	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1767	+	for (int i = rd; i <= 31; i++) {
1768	+	r->gpr(i) = ReadMacInt32(ea);
1769	+	ea += 4;
1770	+	}
1771	+	r->pc() += 4;
1772	+	goto rti;
1773	+	}
1774	+	break;
1775	+	case 47:        // stmw
1776	+	if ((addr % 4) != 0) {
1777	+	uint32 ea = addr;
1778	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1779	+	for (int i = rd; i <= 31; i++) {
1780	+	WriteMacInt32(ea, r->gpr(i));
1781	+	ea += 4;
1782	+	}
1783	+	r->pc() += 4;
1784	+	goto rti;
1785	+	}
1786	+	break;
1787	+	#endif
1788		}
1789
1790	<	// Ignore ROM writes
1791	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1792	<	//                      D(bug("WARNING: %s write access to ROM at %08lx, pc %08lx\n", transfer_size == SIZE_BYTE ? "Byte" : transfer_size == SIZE_HALFWORD ? "Halfword" : "Word", addr, r->nip));
1790	>	// Ignore ROM writes (including to the zero page, which is read-only)
1791	>	if (transfer_type == TYPE_STORE &&
1792	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) ||
1793	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1794	>	//                      D(bug("WARNING: %s write access to ROM at %08lx, pc %08lx\n", transfer_size == SIZE_BYTE ? "Byte" : transfer_size == SIZE_HALFWORD ? "Halfword" : "Word", addr, r->pc()));
1795		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1796	<	r->gpr[ra] = addr;
1797	<	r->nip += 4;
1796	>	r->gpr(ra) = addr;
1797	>	r->pc() += 4;
1798		goto rti;
1799		}
1800
1801		// Ignore illegal memory accesses?
1802		if (PrefsFindBool("ignoresegv")) {
1803		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1804	<	r->gpr[ra] = addr;
1804	>	r->gpr(ra) = addr;
1805		if (transfer_type == TYPE_LOAD)
1806	<	r->gpr[rd] = 0;
1807	<	r->nip += 4;
1806	>	r->gpr(rd) = 0;
1807	>	r->pc() += 4;
1808		goto rti;
1809		}
1810
#	Line 1574 | Line 1812 | static void sigsegv_handler(int sig, sig
1812		if (!PrefsFindBool("nogui")) {
1813		char str[256];
1814		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1815	<	sprintf(str, GetString(STR_MEM_ACCESS_ERR), transfer_size == SIZE_BYTE ? "byte" : transfer_size == SIZE_HALFWORD ? "halfword" : "word", transfer_type == TYPE_LOAD ? GetString(STR_MEM_ACCESS_READ) : GetString(STR_MEM_ACCESS_WRITE), addr, r->nip, r->gpr[24], r->gpr[1]);
1815	>	sprintf(str, GetString(STR_MEM_ACCESS_ERR), transfer_size == SIZE_BYTE ? "byte" : transfer_size == SIZE_HALFWORD ? "halfword" : "word", transfer_type == TYPE_LOAD ? GetString(STR_MEM_ACCESS_READ) : GetString(STR_MEM_ACCESS_WRITE), addr, r->pc(), r->gpr(24), r->gpr(1));
1816		else
1817	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1817	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1818		ErrorAlert(str);
1819		QuitEmulator();
1820		return;
#	Line 1584 | Line 1822 | static void sigsegv_handler(int sig, sig
1822		}
1823
1824		// For all other errors, jump into debugger (sort of...)
1825	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1826		if (!ready_for_signals) {
1827	<	printf("SIGSEGV\n");
1828	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1827	>	printf("%s\n");
1828	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1829		printf(
1830		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1831		"  xer %08lx     cr %08lx  \n"
#	Line 1598 | Line 1837 | static void sigsegv_handler(int sig, sig
1837		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1838		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1839		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1840	<	r->nip, r->link, r->ctr, r->msr,
1841	<	r->xer, r->ccr,
1842	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1843	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1844	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1845	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1846	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1847	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1848	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1849	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1840	>	crash_reason,
1841	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1842	>	r->xer(), r->cr(),
1843	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1844	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1845	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1846	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1847	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1848	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1849	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1850	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1851		exit(1);
1852		QuitEmulator();
1853		return;
1854		} else {
1855		// We crashed. Save registers, tell tick thread and loop forever
1856	<	sigsegv_regs = *(sigregs *)r;
1856	>	build_sigregs(&sigsegv_regs, r);
1857		emul_thread_fatal = true;
1858		for (;;) ;
1859		}
#	Line 1625 | Line 1865 | rti:;
1865		*  SIGILL handler
1866		*/
1867
1868	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1868	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
1869		{
1870	<	pt_regs *r = sc->regs;
1870	>	machine_regs *r = MACHINE_REGISTERS(scp);
1871		char str[256];
1872
1873	+	#ifdef SYSTEM_CLOBBERS_R2
1874	+	// Restore pointer to Thread Local Storage
1875	+	set_r2(TOC);
1876	+	#endif
1877	+	#ifdef SYSTEM_CLOBBERS_R13
1878	+	// Restore pointer to .sdata section
1879	+	set_r13(R13);
1880	+	#endif
1881	+
1882		// Fault in Mac ROM or RAM?
1883	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1883	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1884		if (mac_fault) {
1885
1886		// Get opcode and divide into fields
1887	<	uint32 opcode = *((uint32 *)r->nip);
1887	>	uint32 opcode = *((uint32 *)r->pc());
1888		uint32 primop = opcode >> 26;
1889		uint32 exop = (opcode >> 1) & 0x3ff;
1890		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1646 | Line 1895 | static void sigill_handler(int sig, sigc
1895		switch (primop) {
1896		case 9:         // POWER instructions
1897		case 22:
1898	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
1898	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
1899		ErrorAlert(str);
1900		QuitEmulator();
1901		return;
#	Line 1654 | Line 1903 | power_inst:            sprintf(str, GetString(STR_
1903		case 31:
1904		switch (exop) {
1905		case 83:        // mfmsr
1906	<	r->gpr[rd] = 0xf072;
1907	<	r->nip += 4;
1906	>	r->gpr(rd) = 0xf072;
1907	>	r->pc() += 4;
1908		goto rti;
1909
1910		case 210:       // mtsr
1911		case 242:       // mtsrin
1912		case 306:       // tlbie
1913	<	r->nip += 4;
1913	>	r->pc() += 4;
1914		goto rti;
1915
1916		case 339: {     // mfspr
#	Line 1677 | Line 1926 | power_inst:            sprintf(str, GetString(STR_
1926		case 957:       // PMC3
1927		case 958:       // PMC4
1928		case 959:       // SDA
1929	<	r->nip += 4;
1929	>	r->pc() += 4;
1930		goto rti;
1931		case 25:        // SDR1
1932	<	r->gpr[rd] = 0xdead001f;
1933	<	r->nip += 4;
1932	>	r->gpr(rd) = 0xdead001f;
1933	>	r->pc() += 4;
1934		goto rti;
1935		case 287:       // PVR
1936	<	r->gpr[rd] = PVR;
1937	<	r->nip += 4;
1936	>	r->gpr(rd) = PVR;
1937	>	r->pc() += 4;
1938		goto rti;
1939		}
1940		break;
#	Line 1721 | Line 1970 | power_inst:            sprintf(str, GetString(STR_
1970		case 957:       // PMC3
1971		case 958:       // PMC4
1972		case 959:       // SDA
1973	<	r->nip += 4;
1973	>	r->pc() += 4;
1974		goto rti;
1975		}
1976		break;
#	Line 1740 | Line 1989 | power_inst:            sprintf(str, GetString(STR_
1989
1990		// In GUI mode, show error alert
1991		if (!PrefsFindBool("nogui")) {
1992	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1992	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1993		ErrorAlert(str);
1994		QuitEmulator();
1995		return;
#	Line 1748 | Line 1997 | power_inst:            sprintf(str, GetString(STR_
1997		}
1998
1999		// For all other errors, jump into debugger (sort of...)
2000	+	crash_reason = "SIGILL";
2001		if (!ready_for_signals) {
2002	<	printf("SIGILL\n");
2003	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
2002	>	printf("%s\n");
2003	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
2004		printf(
2005		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
2006		"  xer %08lx     cr %08lx  \n"
#	Line 1762 | Line 2012 | power_inst:            sprintf(str, GetString(STR_
2012		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
2013		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
2014		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
2015	<	r->nip, r->link, r->ctr, r->msr,
2016	<	r->xer, r->ccr,
2017	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2018	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2019	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2020	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2021	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2022	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2023	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2024	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2015	>	crash_reason,
2016	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2017	>	r->xer(), r->cr(),
2018	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2019	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2020	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2021	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2022	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2023	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2024	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2025	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2026		exit(1);
2027		QuitEmulator();
2028		return;
2029		} else {
2030		// We crashed. Save registers, tell tick thread and loop forever
2031	<	sigsegv_regs = *(sigregs *)r;
2031	>	build_sigregs(&sigsegv_regs, r);
2032		emul_thread_fatal = true;
2033		for (;;) ;
2034		}
#	Line 1787 | Line 2038 | rti:;
2038
2039
2040		/*
2041	+	*  Helpers to share 32-bit addressable data with MacOS
2042	+	*/
2043	+
2044	+	bool SheepMem::Init(void)
2045	+	{
2046	+	// Size of a native page
2047	+	page_size = getpagesize();
2048	+
2049	+	// Allocate SheepShaver globals
2050	+	proc = base;
2051	+	if (vm_mac_acquire(base, size) < 0)
2052	+	return false;
2053	+
2054	+	// Allocate page with all bits set to 0, right in the middle
2055	+	// This is also used to catch undesired overlaps between proc and data areas
2056	+	zero_page = proc + (size / 2);
2057	+	Mac_memset(zero_page, 0, page_size);
2058	+	if (vm_protect(Mac2HostAddr(zero_page), page_size, VM_PAGE_READ) < 0)
2059	+	return false;
2060	+
2061	+	#if EMULATED_PPC
2062	+	// Allocate alternate stack for PowerPC interrupt routine
2063	+	sig_stack = base + size;
2064	+	if (vm_mac_acquire(sig_stack, SIG_STACK_SIZE) < 0)
2065	+	return false;
2066	+	#endif
2067	+
2068	+	data = base + size;
2069	+	return true;
2070	+	}
2071	+
2072	+	void SheepMem::Exit(void)
2073	+	{
2074	+	if (data) {
2075	+	// Delete SheepShaver globals
2076	+	vm_mac_release(base, size);
2077	+
2078	+	#if EMULATED_PPC
2079	+	// Delete alternate stack for PowerPC interrupt routine
2080	+	vm_mac_release(sig_stack, SIG_STACK_SIZE);
2081	+	#endif
2082	+	}
2083	+	}
2084	+
2085	+
2086	+	/*
2087		*  Display alert
2088		*/
2089
#	Line 1835 | Line 2132 | void display_alert(int title_id, int pre
2132
2133		void ErrorAlert(const char *text)
2134		{
2135	<	#ifdef ENABLE_GTK
2135	>	if (gui_connection) {
2136	>	if (rpc_method_invoke(gui_connection, RPC_METHOD_ERROR_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2137	>	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2138	>	return;
2139	>	}
2140	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2141		if (PrefsFindBool("nogui") || x_display == NULL) {
2142		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2143		return;
#	Line 1854 | Line 2156 | void ErrorAlert(const char *text)
2156
2157		void WarningAlert(const char *text)
2158		{
2159	<	#ifdef ENABLE_GTK
2159	>	if (gui_connection) {
2160	>	if (rpc_method_invoke(gui_connection, RPC_METHOD_WARNING_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2161	>	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2162	>	return;
2163	>	}
2164	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2165		if (PrefsFindBool("nogui") || x_display == NULL) {
2166		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2167		return;

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