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

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.19 by gbeauche, 2003-12-05T12:41:19Z vs.
Revision 1.72 by gbeauche, 2005-12-11T23:18:47Z

#	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 "thunks.h"
112	>	#include "sigregs.h"
113
114		#define DEBUG 0
115		#include "debug.h"
116
117
118	+	#ifdef HAVE_DIRENT_H
119	+	#include <dirent.h>
120	+	#endif
121	+
122	+	#ifdef USE_SDL
123	+	#include <SDL.h>
124	+	#endif
125	+
126	+	#ifndef USE_SDL_VIDEO
127		#include <X11/Xlib.h>
128	+	#endif
129
130		#ifdef ENABLE_GTK
131		#include <gtk/gtk.h>
#	Line 132 | Line 142
142		#endif
143
144
145	+	// Enable emulation of unaligned lmw/stmw?
146	+	#define EMULATE_UNALIGNED_LOADSTORE_MULTIPLE 1
147	+
148		// Enable Execute68k() safety checks?
149		#define SAFE_EXEC_68K 0
150
#	Line 146 | Line 159
159		const char ROM_FILE_NAME[] = "ROM";
160		const char ROM_FILE_NAME2[] = "Mac OS ROM";
161
162	+	#if REAL_ADDRESSING
163		const uintptr RAM_BASE = 0x20000000;            // Base address of RAM
164	<	const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
165	<
166	<
153	<	#if !EMULATED_PPC
154	<	// Structure in which registers are saved in a signal handler;
155	<	// sigcontext->regs points to it
156	<	// (see arch/ppc/kernel/signal.c)
157	<	typedef struct {
158	<	uint32 u[4];
159	<	} __attribute((aligned(16))) vector128;
160	<	#include <linux/elf.h>
161	<
162	<	struct sigregs {
163	<	elf_gregset_t   gp_regs;                                // Identical to pt_regs
164	<	double                  fp_regs[ELF_NFPREG];    // f0..f31 and fpsrc
165	<	//more (uninteresting) stuff following here
166	<	};
164	>	#else
165	>	// FIXME: needs to be >= 0x04000000
166	>	const uintptr RAM_BASE = 0x10000000;            // Base address of RAM
167		#endif
168	+	const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
169
170
171		// Global variables (exported)
172		#if !EMULATED_PPC
173	<	void *TOC;                              // Small data pointer (r13)
173	>	void *TOC = NULL;               // Pointer to Thread Local Storage (r2)
174	>	void *R13 = NULL;               // Pointer to .sdata section (r13 under Linux)
175		#endif
176		uint32 RAMBase;                 // Base address of Mac RAM
177		uint32 RAMSize;                 // Size of Mac RAM
178		uint32 KernelDataAddr;  // Address of Kernel Data
179		uint32 BootGlobsAddr;   // Address of BootGlobs structure at top of Mac RAM
180	+	uint32 DRCacheAddr;             // Address of DR Cache
181		uint32 PVR;                             // Theoretical PVR
182		int64 CPUClockSpeed;    // Processor clock speed (Hz)
183		int64 BusClockSpeed;    // Bus clock speed (Hz)
184	+	int64 TimebaseSpeed;    // Timebase clock speed (Hz)
185	+	uint8 *RAMBaseHost;             // Base address of Mac RAM (host address space)
186	+	uint8 *ROMBaseHost;             // Base address of Mac ROM (host address space)
187
188
189		// Global variables
190	+	#ifndef USE_SDL_VIDEO
191		char *x_display_name = NULL;                            // X11 display name
192		Display *x_display = NULL;                                      // X11 display handle
193	+	#ifdef X11_LOCK_TYPE
194	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
195	+	#endif
196	+	#endif
197
198		static int zero_fd = 0;                                         // FD of /dev/zero
199		static bool lm_area_mapped = false;                     // Flag: Low Memory area mmap()ped
200		static int kernel_area = -1;                            // SHM ID of Kernel Data area
201		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
202		static bool ram_area_mapped = false;            // Flag: Mac RAM mmap()ped
203	+	static bool dr_cache_area_mapped = false;       // Flag: Mac DR Cache mmap()ped
204	+	static bool dr_emulator_area_mapped = false;// Flag: Mac DR Emulator mmap()ped
205		static KernelData *kernel_data;                         // Pointer to Kernel Data
206		static EmulatorData *emulator_data;
207
208		static uint8 last_xpram[XPRAM_SIZE];            // Buffer for monitoring XPRAM changes
209
210		static bool nvram_thread_active = false;        // Flag: NVRAM watchdog installed
211	+	static volatile bool nvram_thread_cancel;       // Flag: Cancel NVRAM thread
212		static pthread_t nvram_thread;                          // NVRAM watchdog
213		static bool tick_thread_active = false;         // Flag: MacOS thread installed
214	+	static volatile bool tick_thread_cancel;        // Flag: Cancel 60Hz thread
215		static pthread_t tick_thread;                           // 60Hz thread
216		static pthread_t emul_thread;                           // MacOS thread
217
#	Line 204 | Line 219 | static bool ready_for_signals = false;
219		static int64 num_segv = 0;                                      // Number of handled SEGV signals
220
221		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
222	<	#if !EMULATED_PPC
222	>	#if EMULATED_PPC
223	>	static uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
224	>	#else
225		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
226		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
227	<	static void *sig_stack = NULL;                          // Stack for signal handlers
228	<	static void *extra_stack = NULL;                        // Stack for SIGSEGV inside interrupt handler
227	>	static struct sigaltstack sig_stack;            // Stack for signal handlers
228	>	static struct sigaltstack extra_stack;          // Stack for SIGSEGV inside interrupt handler
229		static bool emul_thread_fatal = false;          // Flag: MacOS thread crashed, tick thread shall dump debug output
230		static sigregs sigsegv_regs;                            // Register dump when crashed
231	+	static const char *crash_reason = NULL;         // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
232		#endif
233
234	+	uint32  SheepMem::page_size;                            // Size of a native page
235		uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
236		uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
237	<	uintptr SheepMem::top = 0;                                      // Top of SheepShaver data (stack like storage)
237	>	uintptr SheepMem::proc;                                         // Bottom address of SheepShave procedures
238	>	uintptr SheepMem::data;                                         // Top of SheepShaver data (stack like storage)
239
240
241		// Prototypes
242	+	static bool kernel_data_init(void);
243	+	static void kernel_data_exit(void);
244		static void Quit(void);
245		static void *emul_func(void *arg);
246		static void *nvram_func(void *arg);
247		static void *tick_func(void *arg);
248		#if EMULATED_PPC
227	–	static void sigusr2_handler(int sig);
249		extern void emul_ppc(uint32 start);
250		extern void init_emul_ppc(void);
251		extern void exit_emul_ppc(void);
252	+	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
253		#else
254	<	static void sigusr2_handler(int sig, sigcontext_struct *sc);
255	<	static void sigsegv_handler(int sig, sigcontext_struct *sc);
256	<	static void sigill_handler(int sig, sigcontext_struct *sc);
254	>	extern "C" void sigusr2_handler_init(int sig, siginfo_t *sip, void *scp);
255	>	extern "C" void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
256	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp);
257	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp);
258		#endif
259
260
261		// From asm_linux.S
262		#if !EMULATED_PPC
240	–	extern "C" void *get_toc(void);
263		extern "C" void *get_sp(void);
264	<	extern "C" void flush_icache_range(void *start, void *end);
264	>	extern "C" void *get_r2(void);
265	>	extern "C" void set_r2(void *);
266	>	extern "C" void *get_r13(void);
267	>	extern "C" void set_r13(void *);
268	>	extern "C" void flush_icache_range(uint32 start, uint32 end);
269		extern "C" void jump_to_rom(uint32 entry, uint32 context);
270		extern "C" void quit_emulator(void);
271		extern "C" void execute_68k(uint32 pc, M68kRegisters *r);
#	Line 253 | Line 279 | extern void paranoia_check(void);
279
280		#if EMULATED_PPC
281		/*
282	+	*  Return signal stack base
283	+	*/
284	+
285	+	uintptr SignalStackBase(void)
286	+	{
287	+	return sig_stack + SIG_STACK_SIZE;
288	+	}
289	+
290	+
291	+	/*
292		*  Atomic operations
293		*/
294
#	Line 293 | Line 329 | int atomic_or(int *var, int v)
329
330
331		/*
332	+	*  Memory management helpers
333	+	*/
334	+
335	+	static inline int vm_mac_acquire(uint32 addr, uint32 size)
336	+	{
337	+	return vm_acquire_fixed(Mac2HostAddr(addr), size);
338	+	}
339	+
340	+	static inline int vm_mac_release(uint32 addr, uint32 size)
341	+	{
342	+	return vm_release(Mac2HostAddr(addr), size);
343	+	}
344	+
345	+
346	+	/*
347		*  Main program
348		*/
349
#	Line 308 | Line 359 | static void usage(const char *prg_name)
359		int main(int argc, char **argv)
360		{
361		char str[256];
311	–	uint32 *boot_globs;
312	–	int16 i16;
362		int rom_fd;
363		FILE *proc_file;
364		const char *rom_path;
#	Line 326 | Line 375 | int main(int argc, char **argv)
375		printf(" %s\n", GetString(STR_ABOUT_TEXT2));
376
377		#if !EMULATED_PPC
378	+	#ifdef SYSTEM_CLOBBERS_R2
379		// Get TOC pointer
380	<	TOC = get_toc();
380	>	TOC = get_r2();
381	>	#endif
382	>	#ifdef SYSTEM_CLOBBERS_R13
383	>	// Get r13 register
384	>	R13 = get_r13();
385	>	#endif
386		#endif
387
388		#ifdef ENABLE_GTK
#	Line 343 | Line 398 | int main(int argc, char **argv)
398		for (int i=1; i<argc; i++) {
399		if (strcmp(argv[i], "--help") == 0) {
400		usage(argv[0]);
401	+	#ifndef USE_SDL_VIDEO
402		} else if (strcmp(argv[i], "--display") == 0) {
403		i++;
404		if (i < argc)
405		x_display_name = strdup(argv[i]);
406	+	#endif
407		} else if (argv[i][0] == '-') {
408		fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
409		usage(argv[0]);
410		}
411		}
412
413	+	#ifdef USE_SDL
414	+	// Initialize SDL system
415	+	int sdl_flags = 0;
416	+	#ifdef USE_SDL_VIDEO
417	+	sdl_flags |= SDL_INIT_VIDEO;
418	+	#endif
419	+	#ifdef USE_SDL_AUDIO
420	+	sdl_flags |= SDL_INIT_AUDIO;
421	+	#endif
422	+	assert(sdl_flags != 0);
423	+	if (SDL_Init(sdl_flags) == -1) {
424	+	char str[256];
425	+	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
426	+	ErrorAlert(str);
427	+	goto quit;
428	+	}
429	+	atexit(SDL_Quit);
430	+	#endif
431	+
432	+	#ifndef USE_SDL_VIDEO
433		// Open display
434		x_display = XOpenDisplay(x_display_name);
435		if (x_display == NULL) {
#	Line 366 | Line 443 | int main(int argc, char **argv)
443		// Fork out, so we can return from fullscreen mode when things get ugly
444		XF86DGAForkApp(DefaultScreen(x_display));
445		#endif
446	+	#endif
447
448		#ifdef ENABLE_MON
449		// Initialize mon
450		mon_init();
451		#endif
452
453	+	#if !EMULATED_PPC
454	+	// Create and install stacks for signal handlers
455	+	sig_stack.ss_sp = malloc(SIG_STACK_SIZE);
456	+	D(bug("Signal stack at %p\n", sig_stack.ss_sp));
457	+	if (sig_stack.ss_sp == NULL) {
458	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
459	+	goto quit;
460	+	}
461	+	sig_stack.ss_flags = 0;
462	+	sig_stack.ss_size = SIG_STACK_SIZE;
463	+	if (sigaltstack(&sig_stack, NULL) < 0) {
464	+	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
465	+	ErrorAlert(str);
466	+	goto quit;
467	+	}
468	+	extra_stack.ss_sp = malloc(SIG_STACK_SIZE);
469	+	D(bug("Extra stack at %p\n", extra_stack.ss_sp));
470	+	if (extra_stack.ss_sp == NULL) {
471	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
472	+	goto quit;
473	+	}
474	+	extra_stack.ss_flags = 0;
475	+	extra_stack.ss_size = SIG_STACK_SIZE;
476	+	#endif
477	+
478	+	#if !EMULATED_PPC
479	+	// Install SIGSEGV and SIGBUS handlers
480	+	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
481	+	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
482	+	sigsegv_action.sa_sigaction = sigsegv_handler;
483	+	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
484	+	#ifdef HAVE_SIGNAL_SA_RESTORER
485	+	sigsegv_action.sa_restorer = NULL;
486	+	#endif
487	+	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
488	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
489	+	ErrorAlert(str);
490	+	goto quit;
491	+	}
492	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
493	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
494	+	ErrorAlert(str);
495	+	goto quit;
496	+	}
497	+	#else
498	+	// Install SIGSEGV handler for CPU emulator
499	+	if (!sigsegv_install_handler(sigsegv_handler)) {
500	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
501	+	ErrorAlert(str);
502	+	goto quit;
503	+	}
504	+	#endif
505	+
506	+	// Initialize VM system
507	+	vm_init();
508	+
509		// Get system info
510		PVR = 0x00040000;                       // Default: 604
511		CPUClockSpeed = 100000000;      // Default: 100MHz
512		BusClockSpeed = 100000000;      // Default: 100MHz
513	<	#if !EMULATED_PPC
513	>	TimebaseSpeed =  25000000;      // Default:  25MHz
514	>	#if EMULATED_PPC
515	>	PVR = 0x000c0000;                       // Default: 7400 (with AltiVec)
516	>	#elif defined(__APPLE__) && defined(__MACH__)
517	>	proc_file = popen("ioreg -c IOPlatformDevice", "r");
518	>	if (proc_file) {
519	>	char line[256];
520	>	bool powerpc_node = false;
521	>	while (fgets(line, sizeof(line) - 1, proc_file)) {
522	>	// Read line
523	>	int len = strlen(line);
524	>	if (len == 0)
525	>	continue;
526	>	line[len - 1] = 0;
527	>
528	>	// Parse line
529	>	if (strstr(line, "o PowerPC,"))
530	>	powerpc_node = true;
531	>	else if (powerpc_node) {
532	>	uint32 value;
533	>	char head[256];
534	>	if (sscanf(line, "%[ |]\"cpu-version\" = <%x>", head, &value) == 2)
535	>	PVR = value;
536	>	else if (sscanf(line, "%[ |]\"clock-frequency\" = <%x>", head, &value) == 2)
537	>	CPUClockSpeed = value;
538	>	else if (sscanf(line, "%[ |]\"bus-frequency\" = <%x>", head, &value) == 2)
539	>	BusClockSpeed = value;
540	>	else if (sscanf(line, "%[ |]\"timebase-frequency\" = <%x>", head, &value) == 2)
541	>	TimebaseSpeed = value;
542	>	else if (strchr(line, '}'))
543	>	powerpc_node = false;
544	>	}
545	>	}
546	>	fclose(proc_file);
547	>	} else {
548	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
549	>	WarningAlert(str);
550	>	}
551	>	#else
552		proc_file = fopen("/proc/cpuinfo", "r");
553		if (proc_file) {
554	+	// CPU specs from Linux kernel
555	+	// TODO: make it more generic with features (e.g. AltiVec) and
556	+	// cache information and friends for NameRegistry
557	+	static const struct {
558	+	uint32 pvr_mask;
559	+	uint32 pvr_value;
560	+	const char *cpu_name;
561	+	}
562	+	cpu_specs[] = {
563	+	{ 0xffff0000, 0x00010000, "601" },
564	+	{ 0xffff0000, 0x00030000, "603" },
565	+	{ 0xffff0000, 0x00060000, "603e" },
566	+	{ 0xffff0000, 0x00070000, "603ev" },
567	+	{ 0xffff0000, 0x00040000, "604" },
568	+	{ 0xfffff000, 0x00090000, "604e" },
569	+	{ 0xffff0000, 0x00090000, "604r" },
570	+	{ 0xffff0000, 0x000a0000, "604ev" },
571	+	{ 0xffffffff, 0x00084202, "740/750" },
572	+	{ 0xfffff000, 0x00083000, "745/755" },
573	+	{ 0xfffffff0, 0x00080100, "750CX" },
574	+	{ 0xfffffff0, 0x00082200, "750CX" },
575	+	{ 0xfffffff0, 0x00082210, "750CXe" },
576	+	{ 0xffffff00, 0x70000100, "750FX" },
577	+	{ 0xffffffff, 0x70000200, "750FX" },
578	+	{ 0xffff0000, 0x70000000, "750FX" },
579	+	{ 0xffff0000, 0x70020000, "750GX" },
580	+	{ 0xffff0000, 0x00080000, "740/750" },
581	+	{ 0xffffffff, 0x000c1101, "7400 (1.1)" },
582	+	{ 0xffff0000, 0x000c0000, "7400" },
583	+	{ 0xffff0000, 0x800c0000, "7410" },
584	+	{ 0xffffffff, 0x80000200, "7450" },
585	+	{ 0xffffffff, 0x80000201, "7450" },
586	+	{ 0xffff0000, 0x80000000, "7450" },
587	+	{ 0xffffff00, 0x80010100, "7455" },
588	+	{ 0xffffffff, 0x80010200, "7455" },
589	+	{ 0xffff0000, 0x80010000, "7455" },
590	+	{ 0xffff0000, 0x80020000, "7457" },
591	+	{ 0xffff0000, 0x80030000, "7447A" },
592	+	{ 0xffff0000, 0x80040000, "7448" },
593	+	{ 0x7fff0000, 0x00810000, "82xx" },
594	+	{ 0x7fff0000, 0x00820000, "8280" },
595	+	{ 0xffff0000, 0x00400000, "Power3 (630)" },
596	+	{ 0xffff0000, 0x00410000, "Power3 (630+)" },
597	+	{ 0xffff0000, 0x00360000, "I-star" },
598	+	{ 0xffff0000, 0x00370000, "S-star" },
599	+	{ 0xffff0000, 0x00350000, "Power4" },
600	+	{ 0xffff0000, 0x00390000, "PPC970" },
601	+	{ 0xffff0000, 0x003c0000, "PPC970FX" },
602	+	{ 0xffff0000, 0x003a0000, "POWER5" },
603	+	{ 0, 0, 0 }
604	+	};
605	+
606		char line[256];
607		while(fgets(line, 255, proc_file)) {
608		// Read line
#	Line 390 | Line 614 | int main(int argc, char **argv)
614		// Parse line
615		int i;
616		char value[256];
617	<	if (sscanf(line, "cpu : %s", value) == 1) {
618	<	if (strcmp(value, "601") == 0)
619	<	PVR = 0x00010000;
620	<	else if (strcmp(value, "603") == 0)
621	<	PVR = 0x00030000;
622	<	else if (strcmp(value, "604") == 0)
623	<	PVR = 0x00040000;
624	<	else if (strcmp(value, "603e") == 0)
625	<	PVR = 0x00060000;
626	<	else if (strcmp(value, "603ev") == 0)
627	<	PVR = 0x00070000;
404	<	else if (strcmp(value, "604e") == 0)
405	<	PVR = 0x00090000;
406	<	else if (strcmp(value, "604ev5") == 0)
407	<	PVR = 0x000a0000;
408	<	else if (strcmp(value, "750") == 0)
409	<	PVR = 0x00080000;
410	<	else if (strcmp(value, "821") == 0)
411	<	PVR = 0x00320000;
412	<	else if (strcmp(value, "860") == 0)
413	<	PVR = 0x00500000;
414	<	else
617	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
618	>	// Search by name
619	>	const char *cpu_name = NULL;
620	>	for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
621	>	if (strcmp(cpu_specs[i].cpu_name, value) == 0) {
622	>	cpu_name = cpu_specs[i].cpu_name;
623	>	PVR = cpu_specs[i].pvr_value;
624	>	break;
625	>	}
626	>	}
627	>	if (cpu_name == NULL)
628		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
629	+	else
630	+	printf("Found a PowerPC %s processor\n", cpu_name);
631		}
632		if (sscanf(line, "clock : %dMHz", &i) == 1)
633		CPUClockSpeed = BusClockSpeed = i * 1000000;
#	Line 422 | Line 637 | int main(int argc, char **argv)
637		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
638		WarningAlert(str);
639		}
640	+
641	+	// Get actual bus frequency
642	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
643	+	if (proc_file) {
644	+	union { uint8 b[4]; uint32 l; } value;
645	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
646	+	BusClockSpeed = value.l;
647	+	fclose(proc_file);
648	+	}
649	+
650	+	// Get actual timebase frequency
651	+	TimebaseSpeed = BusClockSpeed / 4;
652	+	DIR *cpus_dir;
653	+	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
654	+	struct dirent *cpu_entry;
655	+	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
656	+	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
657	+	char timebase_freq_node[256];
658	+	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
659	+	proc_file = fopen(timebase_freq_node, "r");
660	+	if (proc_file) {
661	+	union { uint8 b[4]; uint32 l; } value;
662	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
663	+	TimebaseSpeed = value.l;
664	+	fclose(proc_file);
665	+	}
666	+	}
667	+	}
668	+	closedir(cpus_dir);
669	+	}
670		#endif
671	+	// Remap any newer G4/G5 processor to plain G4 for compatibility
672	+	switch (PVR >> 16) {
673	+	case 0x8000:                            // 7450
674	+	case 0x8001:                            // 7455
675	+	case 0x8002:                            // 7457
676	+	case 0x8003:                            // 7447A
677	+	case 0x8004:                            // 7448
678	+	case 0x0039:                            //  970
679	+	case 0x003c:                            //  970FX
680	+	PVR = 0x000c0000;               // 7400
681	+	break;
682	+	}
683		D(bug("PVR: %08x (assumed)\n", PVR));
684
685		// Init system routines
#	Line 446 | Line 703 | int main(int argc, char **argv)
703		goto quit;
704		}
705
706	+	#ifndef PAGEZERO_HACK
707		// Create Low Memory area (0x0000..0x3000)
708	<	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
708	>	if (vm_mac_acquire(0, 0x3000) < 0) {
709		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
710		ErrorAlert(str);
711		goto quit;
712		}
713		lm_area_mapped = true;
714	+	#endif
715
716		// Create areas for Kernel Data
717	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
718	<	if (kernel_area == -1) {
719	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
717	>	if (!kernel_data_init())
718	>	goto quit;
719	>	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
720	>	emulator_data = &kernel_data->ed;
721	>	KernelDataAddr = KERNEL_DATA_BASE;
722	>	D(bug("Kernel Data at %p (%08x)\n", kernel_data, KERNEL_DATA_BASE));
723	>	D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
724	>
725	>	// Create area for DR Cache
726	>	if (vm_mac_acquire(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
727	>	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
728		ErrorAlert(str);
729		goto quit;
730		}
731	<	if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) {
732	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
731	>	dr_emulator_area_mapped = true;
732	>	if (vm_mac_acquire(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
733	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
734		ErrorAlert(str);
735		goto quit;
736		}
737	<	if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) {
738	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
737	>	dr_cache_area_mapped = true;
738	>	#if !EMULATED_PPC
739	>	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
740	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
741		ErrorAlert(str);
742		goto quit;
743		}
744	<	kernel_data = (KernelData *)KERNEL_DATA_BASE;
745	<	emulator_data = &kernel_data->ed;
746	<	KernelDataAddr = KERNEL_DATA_BASE;
477	<	D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
744	>	#endif
745	>	DRCacheAddr = DR_CACHE_BASE;
746	>	D(bug("DR Cache at %p\n", DRCacheAddr));
747
748		// Create area for SheepShaver data
749		if (!SheepMem::Init()) {
#	Line 484 | Line 753 | int main(int argc, char **argv)
753		}
754
755		// Create area for Mac ROM
756	<	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
756	>	if (vm_mac_acquire(ROM_BASE, ROM_AREA_SIZE) < 0) {
757		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
758		ErrorAlert(str);
759		goto quit;
760		}
761	<	#if !EMULATED_PPC || defined(__powerpc__)
762	<	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
761	>	ROMBaseHost = Mac2HostAddr(ROM_BASE);
762	>	#if !EMULATED_PPC
763	>	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
764		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
765		ErrorAlert(str);
766		goto quit;
767		}
768		#endif
769		rom_area_mapped = true;
770	<	D(bug("ROM area at %08x\n", ROM_BASE));
770	>	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROM_BASE));
771
772		// Create area for Mac RAM
773		RAMSize = PrefsFindInt32("ramsize");
#	Line 506 | Line 776 | int main(int argc, char **argv)
776		RAMSize = 8*1024*1024;
777		}
778
779	<	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
779	>	if (vm_mac_acquire(RAM_BASE, RAMSize) < 0) {
780		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
781		ErrorAlert(str);
782		goto quit;
783		}
784	+	RAMBaseHost = Mac2HostAddr(RAM_BASE);
785		#if !EMULATED_PPC
786	<	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
786	>	if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
787		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
788		ErrorAlert(str);
789		goto quit;
#	Line 520 | Line 791 | int main(int argc, char **argv)
791		#endif
792		RAMBase = RAM_BASE;
793		ram_area_mapped = true;
794	<	D(bug("RAM area at %08x\n", RAMBase));
794	>	D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
795
796		if (RAMBase > ROM_BASE) {
797		ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
#	Line 556 | Line 827 | int main(int argc, char **argv)
827		}
828		delete[] rom_tmp;
829
830	<	// Load NVRAM
831	<	XPRAMInit();
561	<
562	<	// Set boot volume
563	<	i16 = PrefsFindInt32("bootdrive");
564	<	XPRAM[0x1378] = i16 >> 8;
565	<	XPRAM[0x1379] = i16 & 0xff;
566	<	i16 = PrefsFindInt32("bootdriver");
567	<	XPRAM[0x137a] = i16 >> 8;
568	<	XPRAM[0x137b] = i16 & 0xff;
569	<
570	<	// Create BootGlobs at top of Mac memory
571	<	memset((void *)(RAMBase + RAMSize - 4096), 0, 4096);
572	<	BootGlobsAddr = RAMBase + RAMSize - 0x1c;
573	<	boot_globs = (uint32 *)BootGlobsAddr;
574	<	boot_globs[-5] = htonl(RAMBase + RAMSize);      // MemTop
575	<	boot_globs[0] = htonl(RAMBase);                         // First RAM bank
576	<	boot_globs[1] = htonl(RAMSize);
577	<	boot_globs[2] = htonl((uint32)-1);                      // End of bank table
578	<
579	<	// Init thunks
580	<	if (!ThunksInit())
581	<	goto quit;
582	<
583	<	// Init drivers
584	<	SonyInit();
585	<	DiskInit();
586	<	CDROMInit();
587	<	SCSIInit();
588	<
589	<	// Init external file system
590	<	ExtFSInit();
591	<
592	<	// Init audio
593	<	AudioInit();
594	<
595	<	// Init network
596	<	EtherInit();
597	<
598	<	// Init serial ports
599	<	SerialInit();
600	<
601	<	// Init Time Manager
602	<	TimerInit();
603	<
604	<	// Init clipboard
605	<	ClipInit();
606	<
607	<	// Init video
608	<	if (!VideoInit())
830	>	// Initialize everything
831	>	if (!InitAll())
832		goto quit;
833	<
611	<	// Install ROM patches
612	<	if (!PatchROM()) {
613	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
614	<	goto quit;
615	<	}
833	>	D(bug("Initialization complete\n"));
834
835		// Clear caches (as we loaded and patched code) and write protect ROM
836		#if !EMULATED_PPC
837	<	MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
620	<	#endif
621	<	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
622	<
623	<	// Initialize Kernel Data
624	<	memset(kernel_data, 0, sizeof(KernelData));
625	<	if (ROMType == ROMTYPE_NEWWORLD) {
626	<	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
627	<	memset((void *)of_dev_tree, 0, 4 * sizeof(uint32));
628	<	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
629	<	uintptr vector_mask_tbl = SheepMem::Reserve(64);
630	<	memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
631	<	memset((void *)vector_lookup_tbl, 0, 128);
632	<	memset((void *)vector_mask_tbl, 0, 64);
633	<	kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
634	<	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree);                        // OF device tree base
635	<	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
636	<	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
637	<	kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
638	<	kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
639	<	kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
640	<	kernel_data->v[0xc24 >> 2] = htonl(RAMSize);
641	<	kernel_data->v[0xc30 >> 2] = htonl(RAMSize);
642	<	kernel_data->v[0xc34 >> 2] = htonl(RAMSize);
643	<	kernel_data->v[0xc38 >> 2] = htonl(0x00010020);
644	<	kernel_data->v[0xc3c >> 2] = htonl(0x00200001);
645	<	kernel_data->v[0xc40 >> 2] = htonl(0x00010000);
646	<	kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
647	<	kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
648	<	kernel_data->v[0xf60 >> 2] = htonl(PVR);
649	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
650	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
651	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
652	<	} else {
653	<	kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
654	<	kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
655	<	kernel_data->v[0xc90 >> 2] = htonl(RAMSize);
656	<	kernel_data->v[0xc94 >> 2] = htonl(RAMSize);
657	<	kernel_data->v[0xc98 >> 2] = htonl(0x00010020);
658	<	kernel_data->v[0xc9c >> 2] = htonl(0x00200001);
659	<	kernel_data->v[0xca0 >> 2] = htonl(0x00010000);
660	<	kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
661	<	kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
662	<	kernel_data->v[0xf80 >> 2] = htonl(PVR);
663	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
664	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
665	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
666	<	}
667	<
668	<	// Initialize extra low memory
669	<	D(bug("Initializing Low Memory...\n"));
670	<	memset(NULL, 0, 0x3000);
671	<	WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
672	<	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr);                                 // For trap replacement routines
673	<	WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
674	<	WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
675	<	WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
676	<	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage());                             // Pointer to read-only page with all bits set to 0
677	<	#if !EMULATED_PPC
678	<	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                            // TOC pointer of emulator
837	>	flush_icache_range(ROM_BASE, ROM_BASE + ROM_AREA_SIZE);
838		#endif
839	<	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT));       // DLPI ethernet driver functions
681	<	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
682	<	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
683	<	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
684	<	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
685	<	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
686	<	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
687	<	D(bug("Low Memory initialized\n"));
839	>	vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
840
841		// Start 60Hz thread
842	+	tick_thread_cancel = false;
843		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
844		D(bug("Tick thread installed (%ld)\n", tick_thread));
845
846		// Start NVRAM watchdog thread
847		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
848	+	nvram_thread_cancel = false;
849		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
850		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
851
852		#if !EMULATED_PPC
699	–	// Create and install stacks for signal handlers
700	–	sig_stack = malloc(SIG_STACK_SIZE);
701	–	D(bug("Signal stack at %p\n", sig_stack));
702	–	if (sig_stack == NULL) {
703	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
704	–	goto quit;
705	–	}
706	–	extra_stack = malloc(SIG_STACK_SIZE);
707	–	D(bug("Extra stack at %p\n", extra_stack));
708	–	if (extra_stack == NULL) {
709	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
710	–	goto quit;
711	–	}
712	–	struct sigaltstack new_stack;
713	–	new_stack.ss_sp = sig_stack;
714	–	new_stack.ss_flags = 0;
715	–	new_stack.ss_size = SIG_STACK_SIZE;
716	–	if (sigaltstack(&new_stack, NULL) < 0) {
717	–	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
718	–	ErrorAlert(str);
719	–	goto quit;
720	–	}
721	–	#endif
722	–
723	–	#if !EMULATED_PPC
724	–	// Install SIGSEGV handler
725	–	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
726	–	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
727	–	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
728	–	sigsegv_action.sa_flags = SA_ONSTACK;
729	–	sigsegv_action.sa_restorer = NULL;
730	–	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
731	–	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
732	–	ErrorAlert(str);
733	–	goto quit;
734	–	}
735	–
853		// Install SIGILL handler
854		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
855		sigaddset(&sigill_action.sa_mask, SIGUSR2);
856	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
857	<	sigill_action.sa_flags = SA_ONSTACK;
856	>	sigill_action.sa_sigaction = sigill_handler;
857	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
858	>	#ifdef HAVE_SIGNAL_SA_RESTORER
859		sigill_action.sa_restorer = NULL;
860	+	#endif
861		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
862		sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
863		ErrorAlert(str);
#	Line 746 | Line 865 | int main(int argc, char **argv)
865		}
866		#endif
867
868	+	#if !EMULATED_PPC
869		// Install interrupt signal handler
870		sigemptyset(&sigusr2_action.sa_mask);
871	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
872	<	sigusr2_action.sa_flags = 0;
873	<	#if !EMULATED_PPC
754	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
755	<	#endif
871	>	sigusr2_action.sa_sigaction = sigusr2_handler_init;
872	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
873	>	#ifdef HAVE_SIGNAL_SA_RESTORER
874		sigusr2_action.sa_restorer = NULL;
875	+	#endif
876		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
877		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
878		ErrorAlert(str);
879		goto quit;
880		}
881	+	#endif
882
883		// Get my thread ID and execute MacOS thread function
884		emul_thread = pthread_self();
#	Line 784 | Line 904 | static void Quit(void)
904
905		// Stop 60Hz thread
906		if (tick_thread_active) {
907	+	tick_thread_cancel = true;
908		pthread_cancel(tick_thread);
909		pthread_join(tick_thread, NULL);
910		}
911
912		// Stop NVRAM watchdog thread
913		if (nvram_thread_active) {
914	+	nvram_thread_cancel = true;
915		pthread_cancel(nvram_thread);
916		pthread_join(nvram_thread, NULL);
917		}
918
919		#if !EMULATED_PPC
920	<	// Uninstall SIGSEGV handler
920	>	// Uninstall SIGSEGV and SIGBUS handlers
921		sigemptyset(&sigsegv_action.sa_mask);
922		sigsegv_action.sa_handler = SIG_DFL;
923		sigsegv_action.sa_flags = 0;
924		sigaction(SIGSEGV, &sigsegv_action, NULL);
925	+	sigaction(SIGBUS, &sigsegv_action, NULL);
926
927		// Uninstall SIGILL handler
928		sigemptyset(&sigill_action.sa_mask);
929		sigill_action.sa_handler = SIG_DFL;
930		sigill_action.sa_flags = 0;
931		sigaction(SIGILL, &sigill_action, NULL);
809	–	#endif
810	–
811	–	// Save NVRAM
812	–	XPRAMExit();
813	–
814	–	// Exit clipboard
815	–	ClipExit();
932
933	<	// Exit Time Manager
934	<	TimerExit();
935	<
936	<	// Exit serial
937	<	SerialExit();
938	<
823	<	// Exit network
824	<	EtherExit();
825	<
826	<	// Exit audio
827	<	AudioExit();
828	<
829	<	// Exit video
830	<	VideoExit();
831	<
832	<	// Exit external file system
833	<	ExtFSExit();
933	>	// Delete stacks for signal handlers
934	>	if (sig_stack.ss_sp)
935	>	free(sig_stack.ss_sp);
936	>	if (extra_stack.ss_sp)
937	>	free(extra_stack.ss_sp);
938	>	#endif
939
940	<	// Exit drivers
941	<	SCSIExit();
837	<	CDROMExit();
838	<	DiskExit();
839	<	SonyExit();
940	>	// Deinitialize everything
941	>	ExitAll();
942
943		// Delete SheepShaver globals
944		SheepMem::Exit();
945
946		// Delete RAM area
947		if (ram_area_mapped)
948	<	vm_release((char *)RAM_BASE, RAMSize);
948	>	vm_mac_release(RAM_BASE, RAMSize);
949
950		// Delete ROM area
951		if (rom_area_mapped)
952	<	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
952	>	vm_mac_release(ROM_BASE, ROM_AREA_SIZE);
953	>
954	>	// Delete DR cache areas
955	>	if (dr_emulator_area_mapped)
956	>	vm_mac_release(DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
957	>	if (dr_cache_area_mapped)
958	>	vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
959
960		// Delete Kernel Data area
961	<	if (kernel_area >= 0) {
854	<	shmdt((void *)KERNEL_DATA_BASE);
855	<	shmdt((void *)KERNEL_DATA2_BASE);
856	<	shmctl(kernel_area, IPC_RMID, NULL);
857	<	}
961	>	kernel_data_exit();
962
963		// Delete Low Memory area
964		if (lm_area_mapped)
965	<	munmap((char *)0x0000, 0x3000);
965	>	vm_mac_release(0, 0x3000);
966
967		// Close /dev/zero
968		if (zero_fd > 0)
#	Line 876 | Line 980 | static void Quit(void)
980		#endif
981
982		// Close X11 server connection
983	+	#ifndef USE_SDL_VIDEO
984		if (x_display)
985		XCloseDisplay(x_display);
986	+	#endif
987
988		exit(0);
989		}
990
991
992		/*
993	+	*  Initialize Kernel Data segments
994	+	*/
995	+
996	+	static bool kernel_data_init(void)
997	+	{
998	+	char str[256];
999	+	uint32 kernel_area_size = (KERNEL_AREA_SIZE + SHMLBA - 1) & -SHMLBA;
1000	+
1001	+	kernel_area = shmget(IPC_PRIVATE, kernel_area_size, 0600);
1002	+	if (kernel_area == -1) {
1003	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1004	+	ErrorAlert(str);
1005	+	return false;
1006	+	}
1007	+	void *kernel_addr = Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA);
1008	+	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1009	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1010	+	ErrorAlert(str);
1011	+	return false;
1012	+	}
1013	+	kernel_addr = Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA);
1014	+	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1015	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1016	+	ErrorAlert(str);
1017	+	return false;
1018	+	}
1019	+	return true;
1020	+	}
1021	+
1022	+
1023	+	/*
1024	+	*  Deallocate Kernel Data segments
1025	+	*/
1026	+
1027	+	static void kernel_data_exit(void)
1028	+	{
1029	+	if (kernel_area >= 0) {
1030	+	shmdt(Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA));
1031	+	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA));
1032	+	shmctl(kernel_area, IPC_RMID, NULL);
1033	+	}
1034	+	}
1035	+
1036	+
1037	+	/*
1038		*  Jump into Mac ROM, start 680x0 emulator
1039		*/
1040
#	Line 970 | Line 1121 | void QuitEmulator(void)
1121
1122
1123		/*
973	–	*  Pause/resume emulator
974	–	*/
975	–
976	–	void PauseEmulator(void)
977	–	{
978	–	pthread_kill(emul_thread, SIGSTOP);
979	–	}
980	–
981	–	void ResumeEmulator(void)
982	–	{
983	–	pthread_kill(emul_thread, SIGCONT);
984	–	}
985	–
986	–
987	–	/*
1124		*  Dump 68k registers
1125		*/
1126
#	Line 1012 | Line 1148 | void Dump68kRegs(M68kRegisters *r)
1148		*  Make code executable
1149		*/
1150
1151	<	void MakeExecutable(int dummy, void *start, uint32 length)
1151	>	void MakeExecutable(int dummy, uint32 start, uint32 length)
1152		{
1153	<	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1153	>	if ((start >= ROM_BASE) && (start < (ROM_BASE + ROM_SIZE)))
1154		return;
1155		#if EMULATED_PPC
1156	<	FlushCodeCache((uintptr)start, (uintptr)start + length);
1156	>	FlushCodeCache(start, start + length);
1157		#else
1158	<	flush_icache_range(start, (void *)((uintptr)start + length));
1158	>	flush_icache_range(start, start + length);
1159		#endif
1160		}
1161
1162
1163		/*
1164	<	*  Patch things after system startup (gets called by disk driver accRun routine)
1164	>	*  NVRAM watchdog thread (saves NVRAM every minute)
1165		*/
1166
1167	<	void PatchAfterStartup(void)
1167	>	static void nvram_watchdog(void)
1168		{
1169	<	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1170	<	InstallExtFS();
1169	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1170	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1171	>	SaveXPRAM();
1172	>	}
1173		}
1174
1037	–
1038	–	/*
1039	–	*  NVRAM watchdog thread (saves NVRAM every minute)
1040	–	*/
1041	–
1175		static void *nvram_func(void *arg)
1176		{
1177	<	struct timespec req = {60, 0};  // 1 minute
1178	<
1179	<	for (;;) {
1180	<	pthread_testcancel();
1048	<	nanosleep(&req, NULL);
1049	<	pthread_testcancel();
1050	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1051	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1052	<	SaveXPRAM();
1053	<	}
1177	>	while (!nvram_thread_cancel) {
1178	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1179	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1180	>	nvram_watchdog();
1181		}
1182		return NULL;
1183		}
#	Line 1063 | Line 1190 | static void *nvram_func(void *arg)
1190		static void *tick_func(void *arg)
1191		{
1192		int tick_counter = 0;
1193	<	struct timespec req = {0, 16625000};
1193	>	uint64 start = GetTicks_usec();
1194	>	int64 ticks = 0;
1195	>	uint64 next = GetTicks_usec();
1196
1197	<	for (;;) {
1197	>	while (!tick_thread_cancel) {
1198
1199		// Wait
1200	<	nanosleep(&req, NULL);
1200	>	next += 16625;
1201	>	int64 delay = next - GetTicks_usec();
1202	>	if (delay > 0)
1203	>	Delay_usec(delay);
1204	>	else if (delay < -16625)
1205	>	next = GetTicks_usec();
1206	>	ticks++;
1207
1208		#if !EMULATED_PPC
1209		// Did we crash?
1210		if (emul_thread_fatal) {
1211
1212		// Yes, dump registers
1213	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1213	>	sigregs *r = &sigsegv_regs;
1214		char str[256];
1215	<	sprintf(str, "SIGSEGV\n"
1215	>	if (crash_reason == NULL)
1216	>	crash_reason = "SIGSEGV";
1217	>	sprintf(str, "%s\n"
1218		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1219		"  xer %08lx     cr %08lx  \n"
1220		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1088 | Line 1225 | static void *tick_func(void *arg)
1225		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1226		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1227		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1228	+	crash_reason,
1229		r->nip, r->link, r->ctr, r->msr,
1230		r->xer, r->ccr,
1231		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1123 | Line 1261 | static void *tick_func(void *arg)
1261		TriggerInterrupt();
1262		}
1263		}
1264	+
1265	+	uint64 end = GetTicks_usec();
1266	+	D(bug("%lld ticks in %lld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1267		return NULL;
1268		}
1269
#	Line 1172 | Line 1313 | struct B2_mutex {
1313		pthread_mutexattr_init(&attr);
1314		// Initialize the mutex for priority inheritance --
1315		// required for accurate timing.
1316	<	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1316	>	#if defined(HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL) && !defined(__CYGWIN__)
1317		pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1318		#endif
1319		#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
#	Line 1243 | Line 1384 | void B2_delete_mutex(B2_mutex *mutex)
1384		*  Trigger signal USR2 from another thread
1385		*/
1386
1387	<	#if !EMULATED_PPC || ASYNC_IRQ
1387	>	#if !EMULATED_PPC
1388		void TriggerInterrupt(void)
1389		{
1390	<	if (ready_for_signals)
1390	>	if (ready_for_signals) {
1391	>	idle_resume();
1392		pthread_kill(emul_thread, SIGUSR2);
1393	+	}
1394		}
1395		#endif
1396
#	Line 1275 | Line 1418 | void ClearInterruptFlag(uint32 flag)
1418
1419		void DisableInterrupt(void)
1420		{
1421	+	#if EMULATED_PPC
1422	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1423	+	#else
1424		atomic_add((int *)XLM_IRQ_NEST, 1);
1425	+	#endif
1426		}
1427
1428
#	Line 1285 | Line 1432 | void DisableInterrupt(void)
1432
1433		void EnableInterrupt(void)
1434		{
1435	+	#if EMULATED_PPC
1436	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1437	+	#else
1438		atomic_add((int *)XLM_IRQ_NEST, -1);
1439	+	#endif
1440		}
1441
1442
#	Line 1293 | Line 1444 | void EnableInterrupt(void)
1444		*  USR2 handler
1445		*/
1446
1447	<	#if EMULATED_PPC
1448	<	static void sigusr2_handler(int sig)
1447	>	#if !EMULATED_PPC
1448	>	void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1449		{
1450	<	#if ASYNC_IRQ
1451	<	extern void HandleInterrupt(void);
1452	<	HandleInterrupt();
1450	>	machine_regs *r = MACHINE_REGISTERS(scp);
1451	>
1452	>	#ifdef SYSTEM_CLOBBERS_R2
1453	>	// Restore pointer to Thread Local Storage
1454	>	set_r2(TOC);
1455	>	#endif
1456	>	#ifdef SYSTEM_CLOBBERS_R13
1457	>	// Restore pointer to .sdata section
1458	>	set_r13(R13);
1459	>	#endif
1460	>
1461	>	#ifdef USE_SDL_VIDEO
1462	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1463	>	SDL_PumpEvents();
1464		#endif
1303	–	}
1304	–	#else
1305	–	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1306	–	{
1307	–	pt_regs *r = sc->regs;
1465
1466		// Do nothing if interrupts are disabled
1467		if (*(int32 *)XLM_IRQ_NEST > 0)
#	Line 1318 | Line 1475 | static void sigusr2_handler(int sig, sig
1475		case MODE_68K:
1476		// 68k emulator active, trigger 68k interrupt level 1
1477		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1478	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1478	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1479		break;
1480
1481		#if INTERRUPTS_IN_NATIVE_MODE
1482		case MODE_NATIVE:
1483		// 68k emulator inactive, in nanokernel?
1484	<	if (r->gpr[1] != KernelDataAddr) {
1484	>	if (r->gpr(1) != KernelDataAddr) {
1485	>
1486	>	// Set extra stack for SIGSEGV handler
1487	>	sigaltstack(&extra_stack, NULL);
1488	>
1489		// Prepare for 68k interrupt level 1
1490		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1491		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1492
1493		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1494	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1494	>	DisableInterrupt();
1495		if (ROMType == ROMTYPE_NEWWORLD)
1496		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1497		else
1498		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1499	+
1500	+	// Reset normal stack
1501	+	sigaltstack(&sig_stack, NULL);
1502		}
1503		break;
1504		#endif
#	Line 1345 | Line 1509 | static void sigusr2_handler(int sig, sig
1509		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1510
1511		// Set extra stack for SIGSEGV handler
1512	<	struct sigaltstack new_stack;
1349	<	new_stack.ss_sp = extra_stack;
1350	<	new_stack.ss_flags = 0;
1351	<	new_stack.ss_size = SIG_STACK_SIZE;
1352	<	sigaltstack(&new_stack, NULL);
1512	>	sigaltstack(&extra_stack, NULL);
1513		#if 1
1514		// Execute full 68k interrupt routine
1515		M68kRegisters r;
#	Line 1375 | Line 1535 | static void sigusr2_handler(int sig, sig
1535		}
1536		}
1537		#endif
1538	<	// Reset normal signal stack
1539	<	new_stack.ss_sp = sig_stack;
1380	<	new_stack.ss_flags = 0;
1381	<	new_stack.ss_size = SIG_STACK_SIZE;
1382	<	sigaltstack(&new_stack, NULL);
1538	>	// Reset normal stack
1539	>	sigaltstack(&sig_stack, NULL);
1540		}
1541		break;
1542		#endif
#	Line 1393 | Line 1550 | static void sigusr2_handler(int sig, sig
1550		*/
1551
1552		#if !EMULATED_PPC
1553	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1553	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1554		{
1555	<	pt_regs *r = sc->regs;
1555	>	machine_regs *r = MACHINE_REGISTERS(scp);
1556
1557		// Get effective address
1558	<	uint32 addr = r->dar;
1558	>	uint32 addr = r->dar();
1559
1560	+	#ifdef SYSTEM_CLOBBERS_R2
1561	+	// Restore pointer to Thread Local Storage
1562	+	set_r2(TOC);
1563	+	#endif
1564	+	#ifdef SYSTEM_CLOBBERS_R13
1565	+	// Restore pointer to .sdata section
1566	+	set_r13(R13);
1567	+	#endif
1568	+
1569		#if ENABLE_VOSF
1570		// Handle screen fault.
1571		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1572	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1572	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1573		return;
1574		#endif
1575
1576		num_segv++;
1577
1578	<	// Fault in Mac ROM or RAM?
1579	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1578	>	// Fault in Mac ROM or RAM or DR Cache?
1579	>	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));
1580		if (mac_fault) {
1581
1582		// "VM settings" during MacOS 8 installation
1583	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1584	<	r->nip += 4;
1585	<	r->gpr[8] = 0;
1583	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1584	>	r->pc() += 4;
1585	>	r->gpr(8) = 0;
1586		return;
1587
1588		// MacOS 8.5 installation
1589	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1590	<	r->nip += 4;
1591	<	r->gpr[8] = 0;
1589	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1590	>	r->pc() += 4;
1591	>	r->gpr(8) = 0;
1592		return;
1593
1594		// MacOS 8 serial drivers on startup
1595	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1596	<	r->nip += 4;
1597	<	r->gpr[8] = 0;
1595	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1596	>	r->pc() += 4;
1597	>	r->gpr(8) = 0;
1598		return;
1599
1600		// MacOS 8.1 serial drivers on startup
1601	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1602	<	r->nip += 4;
1601	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1602	>	r->pc() += 4;
1603		return;
1604	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1605	<	r->nip += 4;
1604	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1605	>	r->pc() += 4;
1606	>	return;
1607	>
1608	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1609	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1610	>	r->pc() += 4;
1611	>	return;
1612	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1613	>	r->pc() += 4;
1614		return;
1615		}
1616
1617		// Get opcode and divide into fields
1618	<	uint32 opcode = *((uint32 *)r->nip);
1618	>	uint32 opcode = *((uint32 *)r->pc());
1619		uint32 primop = opcode >> 26;
1620		uint32 exop = (opcode >> 1) & 0x3ff;
1621		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1530 | Line 1704 | static void sigsegv_handler(int sig, sig
1704		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1705		case 45:        // sthu
1706		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1707	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1708	+	case 46:        // lmw
1709	+	if ((addr % 4) != 0) {
1710	+	uint32 ea = addr;
1711	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1712	+	for (int i = rd; i <= 31; i++) {
1713	+	r->gpr(i) = ReadMacInt32(ea);
1714	+	ea += 4;
1715	+	}
1716	+	r->pc() += 4;
1717	+	goto rti;
1718	+	}
1719	+	break;
1720	+	case 47:        // stmw
1721	+	if ((addr % 4) != 0) {
1722	+	uint32 ea = addr;
1723	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1724	+	for (int i = rd; i <= 31; i++) {
1725	+	WriteMacInt32(ea, r->gpr(i));
1726	+	ea += 4;
1727	+	}
1728	+	r->pc() += 4;
1729	+	goto rti;
1730	+	}
1731	+	break;
1732	+	#endif
1733		}
1734
1735	<	// Ignore ROM writes
1736	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1737	<	//                      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));
1735	>	// Ignore ROM writes (including to the zero page, which is read-only)
1736	>	if (transfer_type == TYPE_STORE &&
1737	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) ||
1738	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1739	>	//                      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()));
1740		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1741	<	r->gpr[ra] = addr;
1742	<	r->nip += 4;
1741	>	r->gpr(ra) = addr;
1742	>	r->pc() += 4;
1743		goto rti;
1744		}
1745
1746		// Ignore illegal memory accesses?
1747		if (PrefsFindBool("ignoresegv")) {
1748		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1749	<	r->gpr[ra] = addr;
1749	>	r->gpr(ra) = addr;
1750		if (transfer_type == TYPE_LOAD)
1751	<	r->gpr[rd] = 0;
1752	<	r->nip += 4;
1751	>	r->gpr(rd) = 0;
1752	>	r->pc() += 4;
1753		goto rti;
1754		}
1755
#	Line 1555 | Line 1757 | static void sigsegv_handler(int sig, sig
1757		if (!PrefsFindBool("nogui")) {
1758		char str[256];
1759		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1760	<	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]);
1760	>	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));
1761		else
1762	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1762	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1763		ErrorAlert(str);
1764		QuitEmulator();
1765		return;
#	Line 1565 | Line 1767 | static void sigsegv_handler(int sig, sig
1767		}
1768
1769		// For all other errors, jump into debugger (sort of...)
1770	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1771		if (!ready_for_signals) {
1772	<	printf("SIGSEGV\n");
1773	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1772	>	printf("%s\n");
1773	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1774		printf(
1775		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1776		"  xer %08lx     cr %08lx  \n"
#	Line 1579 | Line 1782 | static void sigsegv_handler(int sig, sig
1782		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1783		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1784		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1785	<	r->nip, r->link, r->ctr, r->msr,
1786	<	r->xer, r->ccr,
1787	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1788	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1789	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1790	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1791	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1792	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1793	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1794	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1785	>	crash_reason,
1786	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1787	>	r->xer(), r->cr(),
1788	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1789	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1790	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1791	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1792	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1793	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1794	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1795	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1796		exit(1);
1797		QuitEmulator();
1798		return;
1799		} else {
1800		// We crashed. Save registers, tell tick thread and loop forever
1801	<	sigsegv_regs = *(sigregs *)r;
1801	>	build_sigregs(&sigsegv_regs, r);
1802		emul_thread_fatal = true;
1803		for (;;) ;
1804		}
#	Line 1606 | Line 1810 | rti:;
1810		*  SIGILL handler
1811		*/
1812
1813	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1813	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
1814		{
1815	<	pt_regs *r = sc->regs;
1815	>	machine_regs *r = MACHINE_REGISTERS(scp);
1816		char str[256];
1817
1818	+	#ifdef SYSTEM_CLOBBERS_R2
1819	+	// Restore pointer to Thread Local Storage
1820	+	set_r2(TOC);
1821	+	#endif
1822	+	#ifdef SYSTEM_CLOBBERS_R13
1823	+	// Restore pointer to .sdata section
1824	+	set_r13(R13);
1825	+	#endif
1826	+
1827		// Fault in Mac ROM or RAM?
1828	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1828	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1829		if (mac_fault) {
1830
1831		// Get opcode and divide into fields
1832	<	uint32 opcode = *((uint32 *)r->nip);
1832	>	uint32 opcode = *((uint32 *)r->pc());
1833		uint32 primop = opcode >> 26;
1834		uint32 exop = (opcode >> 1) & 0x3ff;
1835		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1627 | Line 1840 | static void sigill_handler(int sig, sigc
1840		switch (primop) {
1841		case 9:         // POWER instructions
1842		case 22:
1843	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
1843	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
1844		ErrorAlert(str);
1845		QuitEmulator();
1846		return;
#	Line 1635 | Line 1848 | power_inst:            sprintf(str, GetString(STR_
1848		case 31:
1849		switch (exop) {
1850		case 83:        // mfmsr
1851	<	r->gpr[rd] = 0xf072;
1852	<	r->nip += 4;
1851	>	r->gpr(rd) = 0xf072;
1852	>	r->pc() += 4;
1853		goto rti;
1854
1855		case 210:       // mtsr
1856		case 242:       // mtsrin
1857		case 306:       // tlbie
1858	<	r->nip += 4;
1858	>	r->pc() += 4;
1859		goto rti;
1860
1861		case 339: {     // mfspr
#	Line 1658 | Line 1871 | power_inst:            sprintf(str, GetString(STR_
1871		case 957:       // PMC3
1872		case 958:       // PMC4
1873		case 959:       // SDA
1874	<	r->nip += 4;
1874	>	r->pc() += 4;
1875		goto rti;
1876		case 25:        // SDR1
1877	<	r->gpr[rd] = 0xdead001f;
1878	<	r->nip += 4;
1877	>	r->gpr(rd) = 0xdead001f;
1878	>	r->pc() += 4;
1879		goto rti;
1880		case 287:       // PVR
1881	<	r->gpr[rd] = PVR;
1882	<	r->nip += 4;
1881	>	r->gpr(rd) = PVR;
1882	>	r->pc() += 4;
1883		goto rti;
1884		}
1885		break;
#	Line 1702 | Line 1915 | power_inst:            sprintf(str, GetString(STR_
1915		case 957:       // PMC3
1916		case 958:       // PMC4
1917		case 959:       // SDA
1918	<	r->nip += 4;
1918	>	r->pc() += 4;
1919		goto rti;
1920		}
1921		break;
#	Line 1721 | Line 1934 | power_inst:            sprintf(str, GetString(STR_
1934
1935		// In GUI mode, show error alert
1936		if (!PrefsFindBool("nogui")) {
1937	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1937	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1938		ErrorAlert(str);
1939		QuitEmulator();
1940		return;
#	Line 1729 | Line 1942 | power_inst:            sprintf(str, GetString(STR_
1942		}
1943
1944		// For all other errors, jump into debugger (sort of...)
1945	+	crash_reason = "SIGILL";
1946		if (!ready_for_signals) {
1947	<	printf("SIGILL\n");
1948	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1947	>	printf("%s\n");
1948	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1949		printf(
1950		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1951		"  xer %08lx     cr %08lx  \n"
#	Line 1743 | Line 1957 | power_inst:            sprintf(str, GetString(STR_
1957		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1958		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1959		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1960	<	r->nip, r->link, r->ctr, r->msr,
1961	<	r->xer, r->ccr,
1962	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1963	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1964	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1965	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1966	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1967	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1968	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1969	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1960	>	crash_reason,
1961	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1962	>	r->xer(), r->cr(),
1963	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1964	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1965	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1966	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1967	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1968	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1969	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1970	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1971		exit(1);
1972		QuitEmulator();
1973		return;
1974		} else {
1975		// We crashed. Save registers, tell tick thread and loop forever
1976	<	sigsegv_regs = *(sigregs *)r;
1976	>	build_sigregs(&sigsegv_regs, r);
1977		emul_thread_fatal = true;
1978		for (;;) ;
1979		}
#	Line 1773 | Line 1988 | rti:;
1988
1989		bool SheepMem::Init(void)
1990		{
1991	<	if (vm_acquire_fixed((char *)base, size) < 0)
1992	<	return false;
1991	>	// Size of a native page
1992	>	page_size = getpagesize();
1993
1994	<	zero_page = base + size;
1994	>	// Allocate SheepShaver globals
1995	>	proc = base;
1996	>	if (vm_mac_acquire(base, size) < 0)
1997	>	return false;
1998
1999	<	int page_size = getpagesize();
2000	<	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
1999	>	// Allocate page with all bits set to 0, right in the middle
2000	>	// This is also used to catch undesired overlaps between proc and data areas
2001	>	zero_page = proc + (size / 2);
2002	>	Mac_memset(zero_page, 0, page_size);
2003	>	if (vm_protect(Mac2HostAddr(zero_page), page_size, VM_PAGE_READ) < 0)
2004		return false;
2005	<	memset((char *)zero_page, 0, page_size);
2006	<	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
2005	>
2006	>	#if EMULATED_PPC
2007	>	// Allocate alternate stack for PowerPC interrupt routine
2008	>	sig_stack = base + size;
2009	>	if (vm_mac_acquire(sig_stack, SIG_STACK_SIZE) < 0)
2010		return false;
2011	+	#endif
2012
2013	<	top = base + size;
2013	>	data = base + size;
2014		return true;
2015		}
2016
2017		void SheepMem::Exit(void)
2018		{
2019	<	if (top) {
2020	<	// The zero page is next to SheepShaver globals
2021	<	vm_release((void *)base, size + getpagesize());
2019	>	if (data) {
2020	>	// Delete SheepShaver globals
2021	>	vm_mac_release(base, size);
2022	>
2023	>	#if EMULATED_PPC
2024	>	// Delete alternate stack for PowerPC interrupt routine
2025	>	vm_mac_release(sig_stack, SIG_STACK_SIZE);
2026	>	#endif
2027		}
2028		}
2029
#	Line 1847 | Line 2077 | void display_alert(int title_id, int pre
2077
2078		void ErrorAlert(const char *text)
2079		{
2080	<	#ifdef ENABLE_GTK
2080	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2081		if (PrefsFindBool("nogui") || x_display == NULL) {
2082		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2083		return;
#	Line 1866 | Line 2096 | void ErrorAlert(const char *text)
2096
2097		void WarningAlert(const char *text)
2098		{
2099	<	#ifdef ENABLE_GTK
2099	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2100		if (PrefsFindBool("nogui") || x_display == NULL) {
2101		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2102		return;

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