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

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.2 by cebix, 2002-02-21T15:12:12Z vs.
Revision 1.63 by gbeauche, 2005-06-08T12:12:50Z

#	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	+	*  There is apparently another problem when processing signals. In
71	+	*  fullscreen mode, we get quick updates of the mouse position. This
72	+	*  causes an increased number of calls to TriggerInterrupt(). And,
73	+	*  since IRQ_NEST is not fully handled atomically, nested calls to
74	+	*  ppc_interrupt() may cause stack corruption to eventually crash the
75	+	*  emulator.
76	+	*
77	+	*  FIXME:
78	+	*  The current solution is to allocate another signal stack when
79	+	*  processing ppc_interrupt(). However, it may be better to detect
80	+	*  the INTFLAG_ADB case and handle it specifically with some extra mutex?
81	+	*
82		*  TODO:
83		*    check if SIGSEGV handler works for all registers (including FP!)
84		*/
#	Line 93 | Line 107
107		#include "xpram.h"
108		#include "timer.h"
109		#include "adb.h"
96	–	#include "sony.h"
97	–	#include "disk.h"
98	–	#include "cdrom.h"
99	–	#include "scsi.h"
110		#include "video.h"
101	–	#include "audio.h"
102	–	#include "ether.h"
103	–	#include "serial.h"
104	–	#include "clip.h"
105	–	#include "extfs.h"
111		#include "sys.h"
112		#include "macos_util.h"
113		#include "rom_patches.h"
114		#include "user_strings.h"
115	+	#include "vm_alloc.h"
116	+	#include "sigsegv.h"
117
118		#define DEBUG 0
119		#include "debug.h"
120
121
122	+	#ifdef HAVE_DIRENT_H
123	+	#include <dirent.h>
124	+	#endif
125	+
126	+	#ifdef USE_SDL
127	+	#include <SDL.h>
128	+	#endif
129	+
130	+	#ifndef USE_SDL_VIDEO
131		#include <X11/Xlib.h>
132	+	#endif
133
134		#ifdef ENABLE_GTK
135		#include <gtk/gtk.h>
#	Line 129 | Line 146
146		#endif
147
148
149	+	// Enable emulation of unaligned lmw/stmw?
150	+	#define EMULATE_UNALIGNED_LOADSTORE_MULTIPLE 1
151	+
152		// Enable Execute68k() safety checks?
153		#define SAFE_EXEC_68K 0
154
#	Line 138 | Line 158
158		// Interrupts in native mode?
159		#define INTERRUPTS_IN_NATIVE_MODE 1
160
161	+	// Number of alternate stacks for signal handlers?
162	+	#define SIG_STACK_COUNT 4
163	+
164
165		// Constants
166		const char ROM_FILE_NAME[] = "ROM";
167		const char ROM_FILE_NAME2[] = "Mac OS ROM";
168
169	<	const uint32 ROM_AREA_SIZE = 0x500000;          // Size of ROM area
170	<	const uint32 ROM_END = ROM_BASE + ROM_SIZE;     // End of ROM
171	<
172	<	const uint32 KERNEL_DATA_BASE = 0x68ffe000;     // Address of Kernel Data
173	<	const uint32 KERNEL_DATA2_BASE = 0x5fffe000;    // Alternate address of Kernel Data
174	<	const uint32 KERNEL_AREA_SIZE = 0x2000;         // Size of Kernel Data area
152	<
169	>	#if REAL_ADDRESSING
170	>	const uintptr RAM_BASE = 0x20000000;            // Base address of RAM
171	>	#else
172	>	// FIXME: needs to be >= 0x04000000
173	>	const uintptr RAM_BASE = 0x10000000;            // Base address of RAM
174	>	#endif
175		const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
176
177
178	<	// 68k Emulator Data
179	<	struct EmulatorData {
180	<	uint32  v[0x400];
178	>	#if !EMULATED_PPC
179	>	struct sigregs {
180	>	uint32 nip;
181	>	uint32 link;
182	>	uint32 ctr;
183	>	uint32 msr;
184	>	uint32 xer;
185	>	uint32 ccr;
186	>	uint32 gpr[32];
187	>	};
188	>
189	>	#if defined(__linux__)
190	>	#include <sys/ucontext.h>
191	>	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext.regs))
192	>
193	>	struct machine_regs : public pt_regs
194	>	{
195	>	u_long & cr()                           { return pt_regs::ccr; }
196	>	uint32 cr() const                       { return pt_regs::ccr; }
197	>	uint32 lr() const                       { return pt_regs::link; }
198	>	uint32 ctr() const                      { return pt_regs::ctr; }
199	>	uint32 xer() const                      { return pt_regs::xer; }
200	>	uint32 msr() const                      { return pt_regs::msr; }
201	>	uint32 dar() const                      { return pt_regs::dar; }
202	>	u_long & pc()                           { return pt_regs::nip; }
203	>	uint32 pc() const                       { return pt_regs::nip; }
204	>	u_long & gpr(int i)                     { return pt_regs::gpr[i]; }
205	>	uint32 gpr(int i) const         { return pt_regs::gpr[i]; }
206		};
207	+	#endif
208
209	+	#if defined(__NetBSD__)
210	+	#include <sys/ucontext.h>
211	+	#define MACHINE_REGISTERS(scp)  ((machine_regs *)&(((ucontext_t *)scp)->uc_mcontext))
212	+
213	+	struct machine_regs : public mcontext_t
214	+	{
215	+	long & cr()                                     { return __gregs[_REG_CR]; }
216	+	uint32 cr() const                       { return __gregs[_REG_CR]; }
217	+	uint32 lr() const                       { return __gregs[_REG_LR]; }
218	+	uint32 ctr() const                      { return __gregs[_REG_CTR]; }
219	+	uint32 xer() const                      { return __gregs[_REG_XER]; }
220	+	uint32 msr() const                      { return __gregs[_REG_MSR]; }
221	+	uint32 dar() const                      { return (uint32)(((siginfo_t *)(((unsigned long)this) - offsetof(ucontext_t, uc_mcontext))) - 1)->si_addr; } /* HACK */
222	+	long & pc()                                     { return __gregs[_REG_PC]; }
223	+	uint32 pc() const                       { return __gregs[_REG_PC]; }
224	+	long & gpr(int i)                       { return __gregs[_REG_R0 + i]; }
225	+	uint32 gpr(int i) const         { return __gregs[_REG_R0 + i]; }
226	+	};
227	+	#endif
228
229	<	// Kernel Data
230	<	struct KernelData {
231	<	uint32  v[0x400];
232	<	EmulatorData ed;
229	>	#if defined(__APPLE__) && defined(__MACH__)
230	>	#include <sys/signal.h>
231	>	extern "C" int sigaltstack(const struct sigaltstack *ss, struct sigaltstack *oss);
232	>
233	>	#include <sys/ucontext.h>
234	>	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext))
235	>
236	>	struct machine_regs : public mcontext
237	>	{
238	>	uint32 & cr()                           { return ss.cr; }
239	>	uint32 cr() const                       { return ss.cr; }
240	>	uint32 lr() const                       { return ss.lr; }
241	>	uint32 ctr() const                      { return ss.ctr; }
242	>	uint32 xer() const                      { return ss.xer; }
243	>	uint32 msr() const                      { return ss.srr1; }
244	>	uint32 dar() const                      { return es.dar; }
245	>	uint32 & pc()                           { return ss.srr0; }
246	>	uint32 pc() const                       { return ss.srr0; }
247	>	uint32 & gpr(int i)                     { return (&ss.r0)[i]; }
248	>	uint32 gpr(int i) const         { return (&ss.r0)[i]; }
249		};
250	+	#endif
251
252	+	static void build_sigregs(sigregs *srp, machine_regs *mrp)
253	+	{
254	+	srp->nip = mrp->pc();
255	+	srp->link = mrp->lr();
256	+	srp->ctr = mrp->ctr();
257	+	srp->msr = mrp->msr();
258	+	srp->xer = mrp->xer();
259	+	srp->ccr = mrp->cr();
260	+	for (int i = 0; i < 32; i++)
261	+	srp->gpr[i] = mrp->gpr(i);
262	+	}
263
264	<	#if !EMULATED_PPC
265	<	// Structure in which registers are saved in a signal handler;
171	<	// sigcontext->regs points to it
172	<	// (see arch/ppc/kernel/signal.c)
173	<	typedef struct {
174	<	uint32 u[4];
175	<	} __attribute((aligned(16))) vector128;
176	<	#include <linux/elf.h>
264	>	static struct sigaltstack sig_stacks[SIG_STACK_COUNT];  // Stacks for signal handlers
265	>	static int sig_stack_id = 0;                                                    // Stack slot currently used
266
267	<	struct sigregs {
268	<	elf_gregset_t   gp_regs;                                // Identical to pt_regs
269	<	double                  fp_regs[ELF_NFPREG];    // f0..f31 and fpsrc
270	<	//more (uninteresting) stuff following here
271	<	};
267	>	static inline int sig_stack_acquire(void)
268	>	{
269	>	if (sig_stack_id >= SIG_STACK_COUNT) {
270	>	printf("FATAL: signal stack overflow\n");
271	>	return -1;
272	>	}
273	>	return sigaltstack(&sig_stacks[sig_stack_id++], NULL);
274	>	}
275	>
276	>	static inline int sig_stack_release(void)
277	>	{
278	>	if (sig_stack_id <= 0) {
279	>	printf("FATAL: signal stack underflow\n");
280	>	return -1;
281	>	}
282	>	return sigaltstack(&sig_stacks[--sig_stack_id], NULL);
283	>	}
284		#endif
285
286
287		// Global variables (exported)
288		#if !EMULATED_PPC
289	<	void *TOC;                              // Small data pointer (r13)
289	>	void *TOC;                              // Pointer to Thread Local Storage (r2)
290	>	void *R13;                              // Pointer to .sdata section (r13 under Linux)
291		#endif
292		uint32 RAMBase;                 // Base address of Mac RAM
293		uint32 RAMSize;                 // Size of Mac RAM
294		uint32 KernelDataAddr;  // Address of Kernel Data
295		uint32 BootGlobsAddr;   // Address of BootGlobs structure at top of Mac RAM
296	+	uint32 DRCacheAddr;             // Address of DR Cache
297		uint32 PVR;                             // Theoretical PVR
298		int64 CPUClockSpeed;    // Processor clock speed (Hz)
299		int64 BusClockSpeed;    // Bus clock speed (Hz)
300	+	int64 TimebaseSpeed;    // Timebase clock speed (Hz)
301	+	uint8 *RAMBaseHost;             // Base address of Mac RAM (host address space)
302	+	uint8 *ROMBaseHost;             // Base address of Mac ROM (host address space)
303
304
305		// Global variables
306	<	static char *x_display_name = NULL;                     // X11 display name
306	>	#ifndef USE_SDL_VIDEO
307	>	char *x_display_name = NULL;                            // X11 display name
308		Display *x_display = NULL;                                      // X11 display handle
309	+	#ifdef X11_LOCK_TYPE
310	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
311	+	#endif
312	+	#endif
313
314		static int zero_fd = 0;                                         // FD of /dev/zero
315		static bool lm_area_mapped = false;                     // Flag: Low Memory area mmap()ped
316		static int kernel_area = -1;                            // SHM ID of Kernel Data area
317		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
318		static bool ram_area_mapped = false;            // Flag: Mac RAM mmap()ped
319	<	static void *mmap_RAMBase = NULL;                       // Base address of mmap()ed RAM area
319	>	static bool dr_cache_area_mapped = false;       // Flag: Mac DR Cache mmap()ped
320	>	static bool dr_emulator_area_mapped = false;// Flag: Mac DR Emulator mmap()ped
321		static KernelData *kernel_data;                         // Pointer to Kernel Data
322		static EmulatorData *emulator_data;
323
324		static uint8 last_xpram[XPRAM_SIZE];            // Buffer for monitoring XPRAM changes
325
326		static bool nvram_thread_active = false;        // Flag: NVRAM watchdog installed
327	+	static volatile bool nvram_thread_cancel;       // Flag: Cancel NVRAM thread
328		static pthread_t nvram_thread;                          // NVRAM watchdog
329		static bool tick_thread_active = false;         // Flag: MacOS thread installed
330	+	static volatile bool tick_thread_cancel;        // Flag: Cancel 60Hz thread
331		static pthread_t tick_thread;                           // 60Hz thread
332		static pthread_t emul_thread;                           // MacOS thread
333
334		static bool ready_for_signals = false;          // Handler installed, signals can be sent
335		static int64 num_segv = 0;                                      // Number of handled SEGV signals
336
223	–	#if !EMULATED_PPC
337		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
338	+	#if EMULATED_PPC
339	+	static uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
340	+	#else
341		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
342		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
343		static bool emul_thread_fatal = false;          // Flag: MacOS thread crashed, tick thread shall dump debug output
344		static sigregs sigsegv_regs;                            // Register dump when crashed
345	+	static const char *crash_reason = NULL;         // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
346		#endif
347
348	+	uint32  SheepMem::page_size;                            // Size of a native page
349	+	uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
350	+	uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
351	+	uintptr SheepMem::proc;                                         // Bottom address of SheepShave procedures
352	+	uintptr SheepMem::data;                                         // Top of SheepShaver data (stack like storage)
353	+
354
355		// Prototypes
356	+	static bool kernel_data_init(void);
357	+	static void kernel_data_exit(void);
358		static void Quit(void);
359		static void *emul_func(void *arg);
360		static void *nvram_func(void *arg);
361		static void *tick_func(void *arg);
362	<	#if !EMULATED_PPC
363	<	static void sigusr2_handler(int sig, sigcontext_struct *sc);
364	<	static void sigsegv_handler(int sig, sigcontext_struct *sc);
365	<	static void sigill_handler(int sig, sigcontext_struct *sc);
362	>	#if EMULATED_PPC
363	>	extern void emul_ppc(uint32 start);
364	>	extern void init_emul_ppc(void);
365	>	extern void exit_emul_ppc(void);
366	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
367	>	#else
368	>	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
369	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp);
370	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp);
371		#endif
372
373
374		// From asm_linux.S
375	<	#if EMULATED_PPC
248	<	extern int atomic_add(int *var, int v);
249	<	extern int atomic_and(int *var, int v);
250	<	extern int atomic_or(int *var, int v);
251	<	#else
252	<	extern "C" void *get_toc(void);
375	>	#if !EMULATED_PPC
376		extern "C" void *get_sp(void);
377	<	extern "C" void flush_icache_range(void *start, void *end);
377	>	extern "C" void *get_r2(void);
378	>	extern "C" void set_r2(void *);
379	>	extern "C" void *get_r13(void);
380	>	extern "C" void set_r13(void *);
381	>	extern "C" void flush_icache_range(uint32 start, uint32 end);
382		extern "C" void jump_to_rom(uint32 entry, uint32 context);
383		extern "C" void quit_emulator(void);
384		extern "C" void execute_68k(uint32 pc, M68kRegisters *r);
#	Line 263 | Line 390 | extern void paranoia_check(void);
390		#endif
391
392
393	<	// Decode LZSS data
394	<	static void decode_lzss(const uint8 *src, uint8 *dest, int size)
393	>	#if EMULATED_PPC
394	>	/*
395	>	*  Return signal stack base
396	>	*/
397	>
398	>	uintptr SignalStackBase(void)
399		{
400	<	char dict[0x1000];
401	<	int run_mask = 0, dict_idx = 0xfee;
402	<	for (;;) {
403	<	if (run_mask < 0x100) {
404	<	// Start new run
405	<	if (--size < 0)
406	<	break;
407	<	run_mask = *src++ | 0xff00;
408	<	}
409	<	bool bit = run_mask & 1;
410	<	run_mask >>= 1;
411	<	if (bit) {
412	<	// Verbatim copy
413	<	if (--size < 0)
414	<	break;
415	<	int c = *src++;
416	<	dict[dict_idx++] = c;
417	<	*dest++ = c;
418	<	dict_idx &= 0xfff;
419	<	} else {
420	<	// Copy from dictionary
421	<	if (--size < 0)
422	<	break;
423	<	int idx = *src++;
424	<	if (--size < 0)
425	<	break;
426	<	int cnt = *src++;
427	<	idx |= (cnt << 4) & 0xf00;
428	<	cnt = (cnt & 0x0f) + 3;
429	<	while (cnt--) {
430	<	char c = dict[idx++];
431	<	dict[dict_idx++] = c;
432	<	*dest++ = c;
433	<	idx &= 0xfff;
434	<	dict_idx &= 0xfff;
435	<	}
436	<	}
437	<	}
400	>	return sig_stack + SIG_STACK_SIZE;
401	>	}
402	>
403	>
404	>	/*
405	>	*  Atomic operations
406	>	*/
407	>
408	>	#if HAVE_SPINLOCKS
409	>	static spinlock_t atomic_ops_lock = SPIN_LOCK_UNLOCKED;
410	>	#else
411	>	#define spin_lock(LOCK)
412	>	#define spin_unlock(LOCK)
413	>	#endif
414	>
415	>	int atomic_add(int *var, int v)
416	>	{
417	>	spin_lock(&atomic_ops_lock);
418	>	int ret = *var;
419	>	*var += v;
420	>	spin_unlock(&atomic_ops_lock);
421	>	return ret;
422	>	}
423	>
424	>	int atomic_and(int *var, int v)
425	>	{
426	>	spin_lock(&atomic_ops_lock);
427	>	int ret = *var;
428	>	*var &= v;
429	>	spin_unlock(&atomic_ops_lock);
430	>	return ret;
431	>	}
432	>
433	>	int atomic_or(int *var, int v)
434	>	{
435	>	spin_lock(&atomic_ops_lock);
436	>	int ret = *var;
437	>	*var |= v;
438	>	spin_unlock(&atomic_ops_lock);
439	>	return ret;
440	>	}
441	>	#endif
442	>
443	>
444	>	/*
445	>	*  Memory management helpers
446	>	*/
447	>
448	>	static inline int vm_mac_acquire(uint32 addr, uint32 size)
449	>	{
450	>	return vm_acquire_fixed(Mac2HostAddr(addr), size);
451	>	}
452	>
453	>	static inline int vm_mac_release(uint32 addr, uint32 size)
454	>	{
455	>	return vm_release(Mac2HostAddr(addr), size);
456		}
457
458
#	Line 323 | Line 472 | static void usage(const char *prg_name)
472		int main(int argc, char **argv)
473		{
474		char str[256];
326	–	uint32 *boot_globs;
327	–	int16 i16;
328	–	int drive, driver;
475		int rom_fd;
476		FILE *proc_file;
477		const char *rom_path;
#	Line 335 | Line 481 | int main(int argc, char **argv)
481
482		// Initialize variables
483		RAMBase = 0;
338	–	mmap_RAMBase = NULL;
484		tzset();
485
486		// Print some info
#	Line 343 | Line 488 | int main(int argc, char **argv)
488		printf(" %s\n", GetString(STR_ABOUT_TEXT2));
489
490		#if !EMULATED_PPC
491	+	#ifdef SYSTEM_CLOBBERS_R2
492		// Get TOC pointer
493	<	TOC = get_toc();
493	>	TOC = get_r2();
494	>	#endif
495	>	#ifdef SYSTEM_CLOBBERS_R13
496	>	// Get r13 register
497	>	R13 = get_r13();
498	>	#endif
499		#endif
500
501		#ifdef ENABLE_GTK
#	Line 360 | Line 511 | int main(int argc, char **argv)
511		for (int i=1; i<argc; i++) {
512		if (strcmp(argv[i], "--help") == 0) {
513		usage(argv[0]);
514	+	#ifndef USE_SDL_VIDEO
515		} else if (strcmp(argv[i], "--display") == 0) {
516		i++;
517		if (i < argc)
518		x_display_name = strdup(argv[i]);
519	+	#endif
520		} else if (argv[i][0] == '-') {
521		fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
522		usage(argv[0]);
523		}
524		}
525
526	+	#ifdef USE_SDL
527	+	// Initialize SDL system
528	+	int sdl_flags = 0;
529	+	#ifdef USE_SDL_VIDEO
530	+	sdl_flags |= SDL_INIT_VIDEO;
531	+	#endif
532	+	#ifdef USE_SDL_AUDIO
533	+	sdl_flags |= SDL_INIT_AUDIO;
534	+	#endif
535	+	assert(sdl_flags != 0);
536	+	if (SDL_Init(sdl_flags) == -1) {
537	+	char str[256];
538	+	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
539	+	ErrorAlert(str);
540	+	goto quit;
541	+	}
542	+	atexit(SDL_Quit);
543	+	#endif
544	+
545	+	#ifndef USE_SDL_VIDEO
546		// Open display
547		x_display = XOpenDisplay(x_display_name);
548		if (x_display == NULL) {
#	Line 383 | Line 556 | int main(int argc, char **argv)
556		// Fork out, so we can return from fullscreen mode when things get ugly
557		XF86DGAForkApp(DefaultScreen(x_display));
558		#endif
559	+	#endif
560
561		#ifdef ENABLE_MON
562		// Initialize mon
563		mon_init();
564		#endif
565
566	+	#if !EMULATED_PPC
567	+	// Create and install stacks for signal handlers
568	+	for (int i = 0; i < SIG_STACK_COUNT; i++) {
569	+	void *sig_stack = malloc(SIG_STACK_SIZE);
570	+	D(bug("Signal stack %d at %p\n", i, sig_stack));
571	+	if (sig_stack == NULL) {
572	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
573	+	goto quit;
574	+	}
575	+	sig_stacks[i].ss_sp = sig_stack;
576	+	sig_stacks[i].ss_flags = 0;
577	+	sig_stacks[i].ss_size = SIG_STACK_SIZE;
578	+	}
579	+	if (sig_stack_acquire() < 0) {
580	+	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
581	+	ErrorAlert(str);
582	+	goto quit;
583	+	}
584	+	#endif
585	+
586	+	#if !EMULATED_PPC
587	+	// Install SIGSEGV and SIGBUS handlers
588	+	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
589	+	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
590	+	sigsegv_action.sa_sigaction = sigsegv_handler;
591	+	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
592	+	#ifdef HAVE_SIGNAL_SA_RESTORER
593	+	sigsegv_action.sa_restorer = NULL;
594	+	#endif
595	+	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
596	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
597	+	ErrorAlert(str);
598	+	goto quit;
599	+	}
600	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
601	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
602	+	ErrorAlert(str);
603	+	goto quit;
604	+	}
605	+	#else
606	+	// Install SIGSEGV handler for CPU emulator
607	+	if (!sigsegv_install_handler(sigsegv_handler)) {
608	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
609	+	ErrorAlert(str);
610	+	goto quit;
611	+	}
612	+	#endif
613	+
614	+	// Initialize VM system
615	+	vm_init();
616	+
617		// Get system info
618		PVR = 0x00040000;                       // Default: 604
619		CPUClockSpeed = 100000000;      // Default: 100MHz
620		BusClockSpeed = 100000000;      // Default: 100MHz
621	<	#if !EMULATED_PPC
621	>	TimebaseSpeed =  25000000;      // Default:  25MHz
622	>	#if EMULATED_PPC
623	>	PVR = 0x000c0000;                       // Default: 7400 (with AltiVec)
624	>	#elif defined(__APPLE__) && defined(__MACH__)
625	>	proc_file = popen("ioreg -c IOPlatformDevice", "r");
626	>	if (proc_file) {
627	>	char line[256];
628	>	bool powerpc_node = false;
629	>	while (fgets(line, sizeof(line) - 1, proc_file)) {
630	>	// Read line
631	>	int len = strlen(line);
632	>	if (len == 0)
633	>	continue;
634	>	line[len - 1] = 0;
635	>
636	>	// Parse line
637	>	if (strstr(line, "o PowerPC,"))
638	>	powerpc_node = true;
639	>	else if (powerpc_node) {
640	>	uint32 value;
641	>	char head[256];
642	>	if (sscanf(line, "%[ |]\"cpu-version\" = <%x>", head, &value) == 2)
643	>	PVR = value;
644	>	else if (sscanf(line, "%[ |]\"clock-frequency\" = <%x>", head, &value) == 2)
645	>	CPUClockSpeed = value;
646	>	else if (sscanf(line, "%[ |]\"bus-frequency\" = <%x>", head, &value) == 2)
647	>	BusClockSpeed = value;
648	>	else if (sscanf(line, "%[ |]\"timebase-frequency\" = <%x>", head, &value) == 2)
649	>	TimebaseSpeed = value;
650	>	else if (strchr(line, '}'))
651	>	powerpc_node = false;
652	>	}
653	>	}
654	>	fclose(proc_file);
655	>	} else {
656	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
657	>	WarningAlert(str);
658	>	}
659	>	#else
660		proc_file = fopen("/proc/cpuinfo", "r");
661		if (proc_file) {
662	+	// CPU specs from Linux kernel
663	+	// TODO: make it more generic with features (e.g. AltiVec) and
664	+	// cache information and friends for NameRegistry
665	+	static const struct {
666	+	uint32 pvr_mask;
667	+	uint32 pvr_value;
668	+	const char *cpu_name;
669	+	}
670	+	cpu_specs[] = {
671	+	{ 0xffff0000, 0x00010000, "601" },
672	+	{ 0xffff0000, 0x00030000, "603" },
673	+	{ 0xffff0000, 0x00060000, "603e" },
674	+	{ 0xffff0000, 0x00070000, "603ev" },
675	+	{ 0xffff0000, 0x00040000, "604" },
676	+	{ 0xfffff000, 0x00090000, "604e" },
677	+	{ 0xffff0000, 0x00090000, "604r" },
678	+	{ 0xffff0000, 0x000a0000, "604ev" },
679	+	{ 0xffffffff, 0x00084202, "740/750" },
680	+	{ 0xfffff000, 0x00083000, "745/755" },
681	+	{ 0xfffffff0, 0x00080100, "750CX" },
682	+	{ 0xfffffff0, 0x00082200, "750CX" },
683	+	{ 0xfffffff0, 0x00082210, "750CXe" },
684	+	{ 0xffffff00, 0x70000100, "750FX" },
685	+	{ 0xffffffff, 0x70000200, "750FX" },
686	+	{ 0xffff0000, 0x70000000, "750FX" },
687	+	{ 0xffff0000, 0x70020000, "750GX" },
688	+	{ 0xffff0000, 0x00080000, "740/750" },
689	+	{ 0xffffffff, 0x000c1101, "7400 (1.1)" },
690	+	{ 0xffff0000, 0x000c0000, "7400" },
691	+	{ 0xffff0000, 0x800c0000, "7410" },
692	+	{ 0xffffffff, 0x80000200, "7450" },
693	+	{ 0xffffffff, 0x80000201, "7450" },
694	+	{ 0xffff0000, 0x80000000, "7450" },
695	+	{ 0xffffff00, 0x80010100, "7455" },
696	+	{ 0xffffffff, 0x80010200, "7455" },
697	+	{ 0xffff0000, 0x80010000, "7455" },
698	+	{ 0xffff0000, 0x80020000, "7457" },
699	+	{ 0xffff0000, 0x80030000, "7447A" },
700	+	{ 0x7fff0000, 0x00810000, "82xx" },
701	+	{ 0x7fff0000, 0x00820000, "8280" },
702	+	{ 0xffff0000, 0x00400000, "Power3 (630)" },
703	+	{ 0xffff0000, 0x00410000, "Power3 (630+)" },
704	+	{ 0xffff0000, 0x00360000, "I-star" },
705	+	{ 0xffff0000, 0x00370000, "S-star" },
706	+	{ 0xffff0000, 0x00350000, "Power4" },
707	+	{ 0xffff0000, 0x00390000, "PPC970" },
708	+	{ 0xffff0000, 0x003a0000, "POWER5" },
709	+	{ 0, 0, 0 }
710	+	};
711	+
712		char line[256];
713		while(fgets(line, 255, proc_file)) {
714		// Read line
#	Line 407 | Line 720 | int main(int argc, char **argv)
720		// Parse line
721		int i;
722		char value[256];
723	<	if (sscanf(line, "cpu : %s", value) == 1) {
724	<	if (strcmp(value, "601") == 0)
725	<	PVR = 0x00010000;
726	<	else if (strcmp(value, "603") == 0)
727	<	PVR = 0x00030000;
728	<	else if (strcmp(value, "604") == 0)
729	<	PVR = 0x00040000;
730	<	else if (strcmp(value, "603e") == 0)
731	<	PVR = 0x00060000;
732	<	else if (strcmp(value, "603ev") == 0)
733	<	PVR = 0x00070000;
421	<	else if (strcmp(value, "604e") == 0)
422	<	PVR = 0x00090000;
423	<	else if (strcmp(value, "604ev5") == 0)
424	<	PVR = 0x000a0000;
425	<	else if (strcmp(value, "750") == 0)
426	<	PVR = 0x00080000;
427	<	else if (strcmp(value, "821") == 0)
428	<	PVR = 0x00320000;
429	<	else if (strcmp(value, "860") == 0)
430	<	PVR = 0x00500000;
431	<	else
723	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
724	>	// Search by name
725	>	const char *cpu_name = NULL;
726	>	for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
727	>	if (strcmp(cpu_specs[i].cpu_name, value) == 0) {
728	>	cpu_name = cpu_specs[i].cpu_name;
729	>	PVR = cpu_specs[i].pvr_value;
730	>	break;
731	>	}
732	>	}
733	>	if (cpu_name == NULL)
734		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
735	+	else
736	+	printf("Found a PowerPC %s processor\n", cpu_name);
737		}
738		if (sscanf(line, "clock : %dMHz", &i) == 1)
739		CPUClockSpeed = BusClockSpeed = i * 1000000;
#	Line 439 | Line 743 | int main(int argc, char **argv)
743		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
744		WarningAlert(str);
745		}
746	+
747	+	// Get actual bus frequency
748	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
749	+	if (proc_file) {
750	+	union { uint8 b[4]; uint32 l; } value;
751	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
752	+	BusClockSpeed = value.l;
753	+	fclose(proc_file);
754	+	}
755	+
756	+	// Get actual timebase frequency
757	+	TimebaseSpeed = BusClockSpeed / 4;
758	+	DIR *cpus_dir;
759	+	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
760	+	struct dirent *cpu_entry;
761	+	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
762	+	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
763	+	char timebase_freq_node[256];
764	+	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
765	+	proc_file = fopen(timebase_freq_node, "r");
766	+	if (proc_file) {
767	+	union { uint8 b[4]; uint32 l; } value;
768	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
769	+	TimebaseSpeed = value.l;
770	+	fclose(proc_file);
771	+	}
772	+	}
773	+	}
774	+	closedir(cpus_dir);
775	+	}
776		#endif
777	+	// Remap any newer G4/G5 processor to plain G4 for compatibility
778	+	switch (PVR >> 16) {
779	+	case 0x8000:                            // 7450
780	+	case 0x8001:                            // 7455
781	+	case 0x8002:                            // 7457
782	+	case 0x0039:                            //  970
783	+	PVR = 0x000c0000;               // 7400
784	+	break;
785	+	}
786		D(bug("PVR: %08x (assumed)\n", PVR));
787
788		// Init system routines
#	Line 463 | Line 806 | int main(int argc, char **argv)
806		goto quit;
807		}
808
809	+	#ifndef PAGEZERO_HACK
810		// Create Low Memory area (0x0000..0x3000)
811	<	if (mmap((char *)0x0000, 0x3000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) == (void *)-1) {
811	>	if (vm_mac_acquire(0, 0x3000) < 0) {
812		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
813		ErrorAlert(str);
814		goto quit;
815		}
816		lm_area_mapped = true;
817	+	#endif
818
819		// Create areas for Kernel Data
820	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
821	<	if (kernel_area == -1) {
822	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
820	>	if (!kernel_data_init())
821	>	goto quit;
822	>	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
823	>	emulator_data = &kernel_data->ed;
824	>	KernelDataAddr = KERNEL_DATA_BASE;
825	>	D(bug("Kernel Data at %p (%08x)\n", kernel_data, KERNEL_DATA_BASE));
826	>	D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
827	>
828	>	// Create area for DR Cache
829	>	if (vm_mac_acquire(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
830	>	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
831		ErrorAlert(str);
832		goto quit;
833		}
834	<	if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) {
835	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
834	>	dr_emulator_area_mapped = true;
835	>	if (vm_mac_acquire(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
836	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
837		ErrorAlert(str);
838		goto quit;
839		}
840	<	if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) {
841	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
840	>	dr_cache_area_mapped = true;
841	>	#if !EMULATED_PPC
842	>	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
843	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
844	>	ErrorAlert(str);
845	>	goto quit;
846	>	}
847	>	#endif
848	>	DRCacheAddr = DR_CACHE_BASE;
849	>	D(bug("DR Cache at %p\n", DRCacheAddr));
850	>
851	>	// Create area for SheepShaver data
852	>	if (!SheepMem::Init()) {
853	>	sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
854		ErrorAlert(str);
855		goto quit;
856		}
491	–	kernel_data = (KernelData *)0x68ffe000;
492	–	emulator_data = &kernel_data->ed;
493	–	KernelDataAddr = (uint32)kernel_data;
494	–	D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
857
858		// Create area for Mac ROM
859	<	if (mmap((char *)ROM_BASE, ROM_AREA_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) == (void *)-1) {
859	>	if (vm_mac_acquire(ROM_BASE, ROM_AREA_SIZE) < 0) {
860	>	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
861	>	ErrorAlert(str);
862	>	goto quit;
863	>	}
864	>	ROMBaseHost = Mac2HostAddr(ROM_BASE);
865	>	#if !EMULATED_PPC
866	>	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
867		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
868		ErrorAlert(str);
869		goto quit;
870		}
871	+	#endif
872		rom_area_mapped = true;
873	<	D(bug("ROM area at %08x\n", ROM_BASE));
873	>	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROM_BASE));
874
875		// Create area for Mac RAM
876		RAMSize = PrefsFindInt32("ramsize");
#	Line 509 | Line 879 | int main(int argc, char **argv)
879		RAMSize = 8*1024*1024;
880		}
881
882	<	mmap_RAMBase = mmap((void *)0x20000000, RAMSize, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0);
883	<	if (mmap_RAMBase == (void *)-1) {
882	>	if (vm_mac_acquire(RAM_BASE, RAMSize) < 0) {
883	>	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
884	>	ErrorAlert(str);
885	>	goto quit;
886	>	}
887	>	RAMBaseHost = Mac2HostAddr(RAM_BASE);
888	>	#if !EMULATED_PPC
889	>	if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
890		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
891		ErrorAlert(str);
892		goto quit;
893		}
894	<	RAMBase = (uint32)mmap_RAMBase;
894	>	#endif
895	>	RAMBase = RAM_BASE;
896		ram_area_mapped = true;
897	<	D(bug("RAM area at %08x\n", RAMBase));
897	>	D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
898
899		if (RAMBase > ROM_BASE) {
900		ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
#	Line 540 | Line 917 | int main(int argc, char **argv)
917		rom_tmp = new uint8[ROM_SIZE];
918		actual = read(rom_fd, (void *)rom_tmp, ROM_SIZE);
919		close(rom_fd);
920	<	if (actual == ROM_SIZE) {
921	<	// Plain ROM image
922	<	memcpy((void *)ROM_BASE, rom_tmp, ROM_SIZE);
923	<	delete[] rom_tmp;
547	<	} else {
548	<	if (strncmp((char *)rom_tmp, "<CHRP-BOOT>", 11) == 0) {
549	<	// CHRP compressed ROM image
550	<	D(bug("CHRP ROM image\n"));
551	<	uint32 lzss_offset, lzss_size;
552	<
553	<	char *s = strstr((char *)rom_tmp, "constant lzss-offset");
554	<	if (s == NULL) {
555	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
556	<	goto quit;
557	<	}
558	<	s -= 7;
559	<	if (sscanf(s, "%06x", &lzss_offset) != 1) {
560	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
561	<	goto quit;
562	<	}
563	<	s = strstr((char *)rom_tmp, "constant lzss-size");
564	<	if (s == NULL) {
565	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
566	<	goto quit;
567	<	}
568	<	s -= 7;
569	<	if (sscanf(s, "%06x", &lzss_size) != 1) {
570	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
571	<	goto quit;
572	<	}
573	<	D(bug("Offset of compressed data: %08x\n", lzss_offset));
574	<	D(bug("Size of compressed data: %08x\n", lzss_size));
575	<
576	<	D(bug("Uncompressing ROM...\n"));
577	<	decode_lzss(rom_tmp + lzss_offset, (uint8 *)ROM_BASE, lzss_size);
578	<	delete[] rom_tmp;
579	<	} else if (rom_size != 4*1024*1024) {
920	>
921	>	// Decode Mac ROM
922	>	if (!DecodeROM(rom_tmp, actual)) {
923	>	if (rom_size != 4*1024*1024) {
924		ErrorAlert(GetString(STR_ROM_SIZE_ERR));
925		goto quit;
926		} else {
#	Line 584 | Line 928 | int main(int argc, char **argv)
928		goto quit;
929		}
930		}
931	+	delete[] rom_tmp;
932
933	<	// Load NVRAM
934	<	XPRAMInit();
590	<
591	<	// Set boot volume
592	<	drive = PrefsFindInt32("bootdrive");
593	<	XPRAM[0x1378] = i16 >> 8;
594	<	XPRAM[0x1379] = i16 & 0xff;
595	<	driver = PrefsFindInt32("bootdriver");
596	<	XPRAM[0x137a] = i16 >> 8;
597	<	XPRAM[0x137b] = i16 & 0xff;
598	<
599	<	// Create BootGlobs at top of Mac memory
600	<	memset((void *)(RAMBase + RAMSize - 4096), 0, 4096);
601	<	BootGlobsAddr = RAMBase + RAMSize - 0x1c;
602	<	boot_globs = (uint32 *)BootGlobsAddr;
603	<	boot_globs[-5] = htonl(RAMBase + RAMSize);      // MemTop
604	<	boot_globs[0] = htonl(RAMBase);                         // First RAM bank
605	<	boot_globs[1] = htonl(RAMSize);
606	<	boot_globs[2] = htonl((uint32)-1);                      // End of bank table
607	<
608	<	// Init drivers
609	<	SonyInit();
610	<	DiskInit();
611	<	CDROMInit();
612	<	SCSIInit();
613	<
614	<	// Init external file system
615	<	ExtFSInit();
616	<
617	<	// Init audio
618	<	AudioInit();
619	<
620	<	// Init network
621	<	EtherInit();
622	<
623	<	// Init serial ports
624	<	SerialInit();
625	<
626	<	// Init Time Manager
627	<	TimerInit();
628	<
629	<	// Init clipboard
630	<	ClipInit();
631	<
632	<	// Init video
633	<	if (!VideoInit())
634	<	goto quit;
635	<
636	<	// Install ROM patches
637	<	if (!PatchROM()) {
638	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
933	>	// Initialize everything
934	>	if (!InitAll())
935		goto quit;
936	<	}
936	>	D(bug("Initialization complete\n"));
937
938		// Clear caches (as we loaded and patched code) and write protect ROM
939		#if !EMULATED_PPC
940	<	MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
645	<	#endif
646	<	mprotect((char *)ROM_BASE, ROM_AREA_SIZE, PROT_EXEC | PROT_READ);
647	<
648	<	// Initialize Kernel Data
649	<	memset(kernel_data, 0, sizeof(KernelData));
650	<	if (ROMType == ROMTYPE_NEWWORLD) {
651	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
652	<	static uint8 vector_lookup_tbl[128];
653	<	static uint8 vector_mask_tbl[64];
654	<	memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
655	<	memset(vector_lookup_tbl, 0, 128);
656	<	memset(vector_mask_tbl, 0, 64);
657	<	kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
658	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree);        // OF device tree base
659	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
660	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
661	<	kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
662	<	kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
663	<	kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
664	<	kernel_data->v[0xc24 >> 2] = htonl(RAMSize);
665	<	kernel_data->v[0xc30 >> 2] = htonl(RAMSize);
666	<	kernel_data->v[0xc34 >> 2] = htonl(RAMSize);
667	<	kernel_data->v[0xc38 >> 2] = htonl(0x00010020);
668	<	kernel_data->v[0xc3c >> 2] = htonl(0x00200001);
669	<	kernel_data->v[0xc40 >> 2] = htonl(0x00010000);
670	<	kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
671	<	kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
672	<	kernel_data->v[0xf60 >> 2] = htonl(PVR);
673	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
674	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
675	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
676	<	} else {
677	<	kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
678	<	kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
679	<	kernel_data->v[0xc90 >> 2] = htonl(RAMSize);
680	<	kernel_data->v[0xc94 >> 2] = htonl(RAMSize);
681	<	kernel_data->v[0xc98 >> 2] = htonl(0x00010020);
682	<	kernel_data->v[0xc9c >> 2] = htonl(0x00200001);
683	<	kernel_data->v[0xca0 >> 2] = htonl(0x00010000);
684	<	kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
685	<	kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
686	<	kernel_data->v[0xf80 >> 2] = htonl(PVR);
687	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
688	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
689	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
690	<	}
691	<
692	<	// Initialize extra low memory
693	<	D(bug("Initializing Low Memory...\n"));
694	<	memset(NULL, 0, 0x3000);
695	<	WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
696	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data);                    // For trap replacement routines
697	<	WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
698	<	WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
699	<	WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
700	<	#if !EMULATED_PPC
701	<	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                    // TOC pointer of emulator
702	<	WriteMacInt32(XLM_ETHER_INIT, (uint32)InitStreamModule);                // DLPI ethernet driver functions
703	<	WriteMacInt32(XLM_ETHER_TERM, (uint32)TerminateStreamModule);
704	<	WriteMacInt32(XLM_ETHER_OPEN, (uint32)ether_open);
705	<	WriteMacInt32(XLM_ETHER_CLOSE, (uint32)ether_close);
706	<	WriteMacInt32(XLM_ETHER_WPUT, (uint32)ether_wput);
707	<	WriteMacInt32(XLM_ETHER_RSRV, (uint32)ether_rsrv);
708	<	WriteMacInt32(XLM_VIDEO_DOIO, (uint32)VideoDoDriverIO);
940	>	flush_icache_range(ROM_BASE, ROM_BASE + ROM_AREA_SIZE);
941		#endif
942	<	D(bug("Low Memory initialized\n"));
942	>	vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
943
944		// Start 60Hz thread
945	+	tick_thread_cancel = false;
946		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
947		D(bug("Tick thread installed (%ld)\n", tick_thread));
948
949		// Start NVRAM watchdog thread
950		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
951	+	nvram_thread_cancel = false;
952		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
953		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
954
955		#if !EMULATED_PPC
722	–	// Create and install stacks for signal handlers
723	–	sig_stack = malloc(SIG_STACK_SIZE);
724	–	D(bug("Signal stack at %p\n", sig_stack));
725	–	if (sig_stack == NULL) {
726	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
727	–	goto quit;
728	–	}
729	–	extra_stack = malloc(SIG_STACK_SIZE);
730	–	D(bug("Extra stack at %p\n", extra_stack));
731	–	if (extra_stack == NULL) {
732	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
733	–	goto quit;
734	–	}
735	–	struct sigaltstack new_stack;
736	–	new_stack.ss_sp = sig_stack;
737	–	new_stack.ss_flags = 0;
738	–	new_stack.ss_size = SIG_STACK_SIZE;
739	–	if (sigaltstack(&new_stack, NULL) < 0) {
740	–	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
741	–	ErrorAlert(str);
742	–	goto quit;
743	–	}
744	–	#endif
745	–
746	–	#if !EMULATED_PPC
747	–	// Install SIGSEGV handler
748	–	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
749	–	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
750	–	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
751	–	sigsegv_action.sa_flags = SA_ONSTACK;
752	–	sigsegv_action.sa_restorer = NULL;
753	–	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
754	–	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
755	–	ErrorAlert(str);
756	–	goto quit;
757	–	}
758	–
956		// Install SIGILL handler
957		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
958		sigaddset(&sigill_action.sa_mask, SIGUSR2);
959	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
960	<	sigill_action.sa_flags = SA_ONSTACK;
959	>	sigill_action.sa_sigaction = sigill_handler;
960	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
961	>	#ifdef HAVE_SIGNAL_SA_RESTORER
962		sigill_action.sa_restorer = NULL;
963	+	#endif
964		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
965		sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
966		ErrorAlert(str);
967		goto quit;
968		}
969	+	#endif
970
971	+	#if !EMULATED_PPC
972		// Install interrupt signal handler
973		sigemptyset(&sigusr2_action.sa_mask);
974	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
975	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
974	>	sigusr2_action.sa_sigaction = sigusr2_handler;
975	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
976	>	#ifdef HAVE_SIGNAL_SA_RESTORER
977		sigusr2_action.sa_restorer = NULL;
978	+	#endif
979		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
980		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
981		ErrorAlert(str);
#	Line 797 | Line 1000 | quit:
1000
1001		static void Quit(void)
1002		{
1003	+	#if EMULATED_PPC
1004	+	// Exit PowerPC emulation
1005	+	exit_emul_ppc();
1006	+	#endif
1007	+
1008		// Stop 60Hz thread
1009		if (tick_thread_active) {
1010	+	tick_thread_cancel = true;
1011		pthread_cancel(tick_thread);
1012		pthread_join(tick_thread, NULL);
1013		}
1014
1015		// Stop NVRAM watchdog thread
1016		if (nvram_thread_active) {
1017	+	nvram_thread_cancel = true;
1018		pthread_cancel(nvram_thread);
1019		pthread_join(nvram_thread, NULL);
1020		}
1021
1022		#if !EMULATED_PPC
1023	<	// Uninstall SIGSEGV handler
1023	>	// Uninstall SIGSEGV and SIGBUS handlers
1024		sigemptyset(&sigsegv_action.sa_mask);
1025		sigsegv_action.sa_handler = SIG_DFL;
1026		sigsegv_action.sa_flags = 0;
1027		sigaction(SIGSEGV, &sigsegv_action, NULL);
1028	+	sigaction(SIGBUS, &sigsegv_action, NULL);
1029
1030		// Uninstall SIGILL handler
1031		sigemptyset(&sigill_action.sa_mask);
1032		sigill_action.sa_handler = SIG_DFL;
1033		sigill_action.sa_flags = 0;
1034		sigaction(SIGILL, &sigill_action, NULL);
824	–	#endif
825	–
826	–	// Save NVRAM
827	–	XPRAMExit();
828	–
829	–	// Exit clipboard
830	–	ClipExit();
1035
1036	<	// Exit Time Manager
1037	<	TimerExit();
1038	<
1039	<	// Exit serial
1040	<	SerialExit();
1041	<
1042	<	// Exit network
839	<	EtherExit();
840	<
841	<	// Exit audio
842	<	AudioExit();
843	<
844	<	// Exit video
845	<	VideoExit();
1036	>	// Delete stacks for signal handlers
1037	>	for (int i = 0; i < SIG_STACK_COUNT; i++) {
1038	>	void *sig_stack = sig_stacks[i].ss_sp;
1039	>	if (sig_stack)
1040	>	free(sig_stack);
1041	>	}
1042	>	#endif
1043
1044	<	// Exit external file system
1045	<	ExtFSExit();
1044	>	// Deinitialize everything
1045	>	ExitAll();
1046
1047	<	// Exit drivers
1048	<	SCSIExit();
852	<	CDROMExit();
853	<	DiskExit();
854	<	SonyExit();
1047	>	// Delete SheepShaver globals
1048	>	SheepMem::Exit();
1049
1050		// Delete RAM area
1051		if (ram_area_mapped)
1052	<	munmap(mmap_RAMBase, RAMSize);
1052	>	vm_mac_release(RAM_BASE, RAMSize);
1053
1054		// Delete ROM area
1055		if (rom_area_mapped)
1056	<	munmap((char *)ROM_BASE, ROM_AREA_SIZE);
1056	>	vm_mac_release(ROM_BASE, ROM_AREA_SIZE);
1057	>
1058	>	// Delete DR cache areas
1059	>	if (dr_emulator_area_mapped)
1060	>	vm_mac_release(DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
1061	>	if (dr_cache_area_mapped)
1062	>	vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
1063
1064		// Delete Kernel Data area
1065	<	if (kernel_area >= 0) {
866	<	shmdt((void *)KERNEL_DATA_BASE);
867	<	shmdt((void *)KERNEL_DATA2_BASE);
868	<	shmctl(kernel_area, IPC_RMID, NULL);
869	<	}
1065	>	kernel_data_exit();
1066
1067		// Delete Low Memory area
1068		if (lm_area_mapped)
1069	<	munmap((char *)0x0000, 0x3000);
1069	>	vm_mac_release(0, 0x3000);
1070
1071		// Close /dev/zero
1072		if (zero_fd > 0)
#	Line 888 | Line 1084 | static void Quit(void)
1084		#endif
1085
1086		// Close X11 server connection
1087	+	#ifndef USE_SDL_VIDEO
1088		if (x_display)
1089		XCloseDisplay(x_display);
1090	+	#endif
1091
1092		exit(0);
1093		}
1094
1095
1096		/*
1097	+	*  Initialize Kernel Data segments
1098	+	*/
1099	+
1100	+	#if defined(__CYGWIN__)
1101	+	#define WIN32_LEAN_AND_MEAN
1102	+	#include <windows.h>
1103	+
1104	+	static HANDLE kernel_handle;                            // Shared memory handle for Kernel Data
1105	+	static DWORD allocation_granule;                        // Minimum size of allocateable are (64K)
1106	+	static DWORD kernel_area_size;                          // Size of Kernel Data area
1107	+	#endif
1108	+
1109	+	static bool kernel_data_init(void)
1110	+	{
1111	+	char str[256];
1112	+	#ifdef _WIN32
1113	+	SYSTEM_INFO si;
1114	+	GetSystemInfo(&si);
1115	+	allocation_granule = si.dwAllocationGranularity;
1116	+	kernel_area_size = (KERNEL_AREA_SIZE + allocation_granule - 1) & -allocation_granule;
1117	+
1118	+	char rcs[10];
1119	+	LPVOID kernel_addr;
1120	+	kernel_handle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, kernel_area_size, NULL);
1121	+	if (kernel_handle == NULL) {
1122	+	sprintf(rcs, "%d", GetLastError());
1123	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), rcs);
1124	+	ErrorAlert(str);
1125	+	return false;
1126	+	}
1127	+	kernel_addr = (LPVOID)Mac2HostAddr(KERNEL_DATA_BASE & -allocation_granule);
1128	+	if (MapViewOfFileEx(kernel_handle, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, kernel_area_size, kernel_addr) != kernel_addr) {
1129	+	sprintf(rcs, "%d", GetLastError());
1130	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), rcs);
1131	+	ErrorAlert(str);
1132	+	return false;
1133	+	}
1134	+	kernel_addr = (LPVOID)Mac2HostAddr(KERNEL_DATA2_BASE & -allocation_granule);
1135	+	if (MapViewOfFileEx(kernel_handle, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, kernel_area_size, kernel_addr) != kernel_addr) {
1136	+	sprintf(rcs, "%d", GetLastError());
1137	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), rcs);
1138	+	ErrorAlert(str);
1139	+	return false;
1140	+	}
1141	+	#else
1142	+	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
1143	+	if (kernel_area == -1) {
1144	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1145	+	ErrorAlert(str);
1146	+	return false;
1147	+	}
1148	+	if (shmat(kernel_area, Mac2HostAddr(KERNEL_DATA_BASE), 0) < 0) {
1149	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1150	+	ErrorAlert(str);
1151	+	return false;
1152	+	}
1153	+	if (shmat(kernel_area, Mac2HostAddr(KERNEL_DATA2_BASE), 0) < 0) {
1154	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1155	+	ErrorAlert(str);
1156	+	return false;
1157	+	}
1158	+	#endif
1159	+	return true;
1160	+	}
1161	+
1162	+
1163	+	/*
1164	+	*  Deallocate Kernel Data segments
1165	+	*/
1166	+
1167	+	static void kernel_data_exit(void)
1168	+	{
1169	+	#ifdef _WIN32
1170	+	if (kernel_handle) {
1171	+	UnmapViewOfFile(Mac2HostAddr(KERNEL_DATA_BASE & -allocation_granule));
1172	+	UnmapViewOfFile(Mac2HostAddr(KERNEL_DATA2_BASE & -allocation_granule));
1173	+	CloseHandle(kernel_handle);
1174	+	}
1175	+	#else
1176	+	if (kernel_area >= 0) {
1177	+	shmdt(Mac2HostAddr(KERNEL_DATA_BASE));
1178	+	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE));
1179	+	shmctl(kernel_area, IPC_RMID, NULL);
1180	+	}
1181	+	#endif
1182	+	}
1183	+
1184	+
1185	+	/*
1186		*  Jump into Mac ROM, start 680x0 emulator
1187		*/
1188
1189		#if EMULATED_PPC
903	–	extern void emul_ppc(uint32 start);
904	–	extern void init_emul_ppc(void);
1190		void jump_to_rom(uint32 entry)
1191		{
1192		init_emul_ppc();
#	Line 970 | Line 1255 | void Execute68kTrap(uint16 trap, M68kReg
1255
1256
1257		/*
973	–	*  Execute PPC code from EMUL_OP routine (real mode switch)
974	–	*/
975	–
976	–	void ExecutePPC(void (*func)())
977	–	{
978	–	uint32 tvect[2] = {(uint32)func, 0};    // Fake TVECT
979	–	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
980	–	M68kRegisters r;
981	–	Execute68k((uint32)&desc, &r);
982	–	}
983	–
984	–
985	–	/*
1258		*  Quit emulator (cause return from jump_to_rom)
1259		*/
1260
#	Line 997 | Line 1269 | void QuitEmulator(void)
1269
1270
1271		/*
1000	–	*  Pause/resume emulator
1001	–	*/
1002	–
1003	–	void PauseEmulator(void)
1004	–	{
1005	–	pthread_kill(emul_thread, SIGSTOP);
1006	–	}
1007	–
1008	–	void ResumeEmulator(void)
1009	–	{
1010	–	pthread_kill(emul_thread, SIGCONT);
1011	–	}
1012	–
1013	–
1014	–	/*
1272		*  Dump 68k registers
1273		*/
1274
#	Line 1039 | Line 1296 | void Dump68kRegs(M68kRegisters *r)
1296		*  Make code executable
1297		*/
1298
1299	<	void MakeExecutable(int dummy, void *start, uint32 length)
1299	>	void MakeExecutable(int dummy, uint32 start, uint32 length)
1300		{
1301	<	#if !EMULATED_PPC
1045	<	if (((uint32)start >= ROM_BASE) && ((uint32)start < (ROM_BASE + ROM_SIZE)))
1301	>	if ((start >= ROM_BASE) && (start < (ROM_BASE + ROM_SIZE)))
1302		return;
1303	<	flush_icache_range(start, (void *)((uint32)start + length));
1303	>	#if EMULATED_PPC
1304	>	FlushCodeCache(start, start + length);
1305	>	#else
1306	>	flush_icache_range(start, start + length);
1307		#endif
1308		}
1309
1310
1311		/*
1312	<	*  Patch things after system startup (gets called by disk driver accRun routine)
1312	>	*  NVRAM watchdog thread (saves NVRAM every minute)
1313		*/
1314
1315	<	void PatchAfterStartup(void)
1315	>	static void nvram_watchdog(void)
1316		{
1317	<	ExecutePPC(VideoInstallAccel);
1318	<	InstallExtFS();
1317	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1318	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1319	>	SaveXPRAM();
1320	>	}
1321		}
1322
1062	–
1063	–	/*
1064	–	*  NVRAM watchdog thread (saves NVRAM every minute)
1065	–	*/
1066	–
1323		static void *nvram_func(void *arg)
1324		{
1325	<	struct timespec req = {60, 0};  // 1 minute
1326	<
1327	<	for (;;) {
1328	<	pthread_testcancel();
1073	<	nanosleep(&req, NULL);
1074	<	pthread_testcancel();
1075	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1076	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1077	<	SaveXPRAM();
1078	<	}
1325	>	while (!nvram_thread_cancel) {
1326	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1327	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1328	>	nvram_watchdog();
1329		}
1330		return NULL;
1331		}
#	Line 1088 | Line 1338 | static void *nvram_func(void *arg)
1338		static void *tick_func(void *arg)
1339		{
1340		int tick_counter = 0;
1341	<	struct timespec req = {0, 16625000};
1341	>	uint64 start = GetTicks_usec();
1342	>	int64 ticks = 0;
1343	>	uint64 next = GetTicks_usec();
1344
1345	<	for (;;) {
1345	>	while (!tick_thread_cancel) {
1346
1347		// Wait
1348	<	nanosleep(&req, NULL);
1348	>	next += 16625;
1349	>	int64 delay = next - GetTicks_usec();
1350	>	if (delay > 0)
1351	>	Delay_usec(delay);
1352	>	else if (delay < -16625)
1353	>	next = GetTicks_usec();
1354	>	ticks++;
1355
1356		#if !EMULATED_PPC
1357		// Did we crash?
1358		if (emul_thread_fatal) {
1359
1360		// Yes, dump registers
1361	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1361	>	sigregs *r = &sigsegv_regs;
1362		char str[256];
1363	<	sprintf(str, "SIGSEGV\n"
1363	>	if (crash_reason == NULL)
1364	>	crash_reason = "SIGSEGV";
1365	>	sprintf(str, "%s\n"
1366		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1367		"  xer %08lx     cr %08lx  \n"
1368		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1113 | Line 1373 | static void *tick_func(void *arg)
1373		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1374		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1375		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1376	+	crash_reason,
1377		r->nip, r->link, r->ctr, r->msr,
1378		r->xer, r->ccr,
1379		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1148 | Line 1409 | static void *tick_func(void *arg)
1409		TriggerInterrupt();
1410		}
1411		}
1412	+
1413	+	uint64 end = GetTicks_usec();
1414	+	D(bug("%Ld ticks in %Ld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1415		return NULL;
1416		}
1417
#	Line 1158 | Line 1422 | static void *tick_func(void *arg)
1422
1423		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1424		{
1425	<	// nothing to do
1425	>	#ifdef HAVE_PTHREADS
1426	>	pthread_attr_init(attr);
1427	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1428	>	// Some of these only work for superuser
1429	>	if (geteuid() == 0) {
1430	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1431	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1432	>	struct sched_param fifo_param;
1433	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1434	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1435	>	priority);
1436	>	pthread_attr_setschedparam(attr, &fifo_param);
1437	>	}
1438	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1439	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1440	>	// If system scope is not available (eg. we're not running
1441	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1442	>	// scope.  It exposes pthread scheduling to the kernel,
1443	>	// without setting realtime priority.
1444	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1445	>	#endif
1446	>	}
1447	>	#endif
1448	>	#endif
1449		}
1450
1451
#	Line 1166 | Line 1453 | void Set_pthread_attr(pthread_attr_t *at
1453		*  Mutexes
1454		*/
1455
1456	+	#ifdef HAVE_PTHREADS
1457	+
1458	+	struct B2_mutex {
1459	+	B2_mutex() {
1460	+	pthread_mutexattr_t attr;
1461	+	pthread_mutexattr_init(&attr);
1462	+	// Initialize the mutex for priority inheritance --
1463	+	// required for accurate timing.
1464	+	#if defined(HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL) && !defined(__CYGWIN__)
1465	+	pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1466	+	#endif
1467	+	#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
1468	+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
1469	+	#endif
1470	+	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPSHARED
1471	+	pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_PRIVATE);
1472	+	#endif
1473	+	pthread_mutex_init(&m, &attr);
1474	+	pthread_mutexattr_destroy(&attr);
1475	+	}
1476	+	~B2_mutex() {
1477	+	pthread_mutex_trylock(&m); // Make sure it's locked before
1478	+	pthread_mutex_unlock(&m);  // unlocking it.
1479	+	pthread_mutex_destroy(&m);
1480	+	}
1481	+	pthread_mutex_t m;
1482	+	};
1483	+
1484	+	B2_mutex *B2_create_mutex(void)
1485	+	{
1486	+	return new B2_mutex;
1487	+	}
1488	+
1489	+	void B2_lock_mutex(B2_mutex *mutex)
1490	+	{
1491	+	pthread_mutex_lock(&mutex->m);
1492	+	}
1493	+
1494	+	void B2_unlock_mutex(B2_mutex *mutex)
1495	+	{
1496	+	pthread_mutex_unlock(&mutex->m);
1497	+	}
1498	+
1499	+	void B2_delete_mutex(B2_mutex *mutex)
1500	+	{
1501	+	delete mutex;
1502	+	}
1503	+
1504	+	#else
1505	+
1506		struct B2_mutex {
1507		int dummy;
1508		};
#	Line 1188 | Line 1525 | void B2_delete_mutex(B2_mutex *mutex)
1525		delete mutex;
1526		}
1527
1528	+	#endif
1529	+
1530
1531		/*
1532		*  Trigger signal USR2 from another thread
1533		*/
1534
1535	+	#if !EMULATED_PPC
1536		void TriggerInterrupt(void)
1537		{
1198	–	#if EMULATED_PPC
1199	–	WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1200	–	#else
1201	–	#if 0
1202	–	WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1203	–	#else
1538		if (ready_for_signals)
1539		pthread_kill(emul_thread, SIGUSR2);
1206	–	#endif
1207	–	#endif
1540		}
1541	+	#endif
1542
1543
1544		/*
#	Line 1231 | Line 1564 | void ClearInterruptFlag(uint32 flag)
1564
1565		void DisableInterrupt(void)
1566		{
1567	+	#if EMULATED_PPC
1568	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1569	+	#else
1570		atomic_add((int *)XLM_IRQ_NEST, 1);
1571	+	#endif
1572		}
1573
1574
#	Line 1241 | Line 1578 | void DisableInterrupt(void)
1578
1579		void EnableInterrupt(void)
1580		{
1581	+	#if EMULATED_PPC
1582	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1583	+	#else
1584		atomic_add((int *)XLM_IRQ_NEST, -1);
1585	+	#endif
1586		}
1587
1588
1248	–	#if !EMULATED_PPC
1589		/*
1590		*  USR2 handler
1591		*/
1592
1593	<	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1593	>	#if !EMULATED_PPC
1594	>	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1595		{
1596	<	pt_regs *r = sc->regs;
1596	>	machine_regs *r = MACHINE_REGISTERS(scp);
1597	>
1598	>	#ifdef USE_SDL_VIDEO
1599	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1600	>	SDL_PumpEvents();
1601	>	#endif
1602
1603		// Do nothing if interrupts are disabled
1604		if (*(int32 *)XLM_IRQ_NEST > 0)
1605		return;
1606
1607	+	#ifdef SYSTEM_CLOBBERS_R2
1608	+	// Restore pointer to Thread Local Storage
1609	+	set_r2(TOC);
1610	+	#endif
1611	+	#ifdef SYSTEM_CLOBBERS_R13
1612	+	// Restore pointer to .sdata section
1613	+	set_r13(R13);
1614	+	#endif
1615	+
1616		// Disable MacOS stack sniffer
1617		WriteMacInt32(0x110, 0);
1618
#	Line 1266 | Line 1621 | static void sigusr2_handler(int sig, sig
1621		case MODE_68K:
1622		// 68k emulator active, trigger 68k interrupt level 1
1623		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1624	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1624	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1625		break;
1626
1627		#if INTERRUPTS_IN_NATIVE_MODE
1628		case MODE_NATIVE:
1629		// 68k emulator inactive, in nanokernel?
1630	<	if (r->gpr[1] != KernelDataAddr) {
1630	>	if (r->gpr(1) != KernelDataAddr) {
1631	>
1632	>	// Set extra stack for nested interrupts
1633	>	sig_stack_acquire();
1634	>
1635		// Prepare for 68k interrupt level 1
1636		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1637		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1638
1639		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1640	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1640	>	DisableInterrupt();
1641		if (ROMType == ROMTYPE_NEWWORLD)
1642		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1643		else
1644		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1645	+
1646	+	// Reset normal signal stack
1647	+	sig_stack_release();
1648		}
1649		break;
1650		#endif
#	Line 1293 | Line 1655 | static void sigusr2_handler(int sig, sig
1655		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1656
1657		// Set extra stack for SIGSEGV handler
1658	<	struct sigaltstack new_stack;
1297	<	new_stack.ss_sp = extra_stack;
1298	<	new_stack.ss_flags = 0;
1299	<	new_stack.ss_size = SIG_STACK_SIZE;
1300	<	sigaltstack(&new_stack, NULL);
1658	>	sig_stack_acquire();
1659		#if 1
1660		// Execute full 68k interrupt routine
1661		M68kRegisters r;
#	Line 1319 | Line 1677 | static void sigusr2_handler(int sig, sig
1677		if (InterruptFlags & INTFLAG_VIA) {
1678		ClearInterruptFlag(INTFLAG_VIA);
1679		ADBInterrupt();
1680	<	ExecutePPC(VideoVBL);
1680	>	ExecuteNative(NATIVE_VIDEO_VBL);
1681		}
1682		}
1683		#endif
1684		// Reset normal signal stack
1685	<	new_stack.ss_sp = sig_stack;
1328	<	new_stack.ss_flags = 0;
1329	<	new_stack.ss_size = SIG_STACK_SIZE;
1330	<	sigaltstack(&new_stack, NULL);
1685	>	sig_stack_release();
1686		}
1687		break;
1688		#endif
1334	–
1689		}
1690		}
1691	+	#endif
1692
1693
1694		/*
1695		*  SIGSEGV handler
1696		*/
1697
1698	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1698	>	#if !EMULATED_PPC
1699	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1700		{
1701	<	pt_regs *r = sc->regs;
1701	>	machine_regs *r = MACHINE_REGISTERS(scp);
1702	>
1703	>	// Get effective address
1704	>	uint32 addr = r->dar();
1705	>
1706	>	#ifdef SYSTEM_CLOBBERS_R2
1707	>	// Restore pointer to Thread Local Storage
1708	>	set_r2(TOC);
1709	>	#endif
1710	>	#ifdef SYSTEM_CLOBBERS_R13
1711	>	// Restore pointer to .sdata section
1712	>	set_r13(R13);
1713	>	#endif
1714	>
1715	>	#if ENABLE_VOSF
1716	>	// Handle screen fault.
1717	>	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1718	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1719	>	return;
1720	>	#endif
1721	>
1722		num_segv++;
1723
1724	<	// Fault in Mac ROM or RAM?
1725	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1724	>	// Fault in Mac ROM or RAM or DR Cache?
1725	>	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));
1726		if (mac_fault) {
1727
1352	–	// Get opcode and divide into fields
1353	–	uint32 opcode = *((uint32 *)r->nip);
1354	–	uint32 primop = opcode >> 26;
1355	–	uint32 exop = (opcode >> 1) & 0x3ff;
1356	–	uint32 ra = (opcode >> 16) & 0x1f;
1357	–	uint32 rb = (opcode >> 11) & 0x1f;
1358	–	uint32 rd = (opcode >> 21) & 0x1f;
1359	–	int32 imm = (int16)(opcode & 0xffff);
1360	–
1728		// "VM settings" during MacOS 8 installation
1729	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1730	<	r->nip += 4;
1731	<	r->gpr[8] = 0;
1729	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1730	>	r->pc() += 4;
1731	>	r->gpr(8) = 0;
1732		return;
1733
1734		// MacOS 8.5 installation
1735	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1736	<	r->nip += 4;
1737	<	r->gpr[8] = 0;
1735	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1736	>	r->pc() += 4;
1737	>	r->gpr(8) = 0;
1738		return;
1739
1740		// MacOS 8 serial drivers on startup
1741	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1742	<	r->nip += 4;
1743	<	r->gpr[8] = 0;
1741	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1742	>	r->pc() += 4;
1743	>	r->gpr(8) = 0;
1744		return;
1745
1746		// MacOS 8.1 serial drivers on startup
1747	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1748	<	r->nip += 4;
1747	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1748	>	r->pc() += 4;
1749		return;
1750	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1751	<	r->nip += 4;
1750	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1751	>	r->pc() += 4;
1752	>	return;
1753	>
1754	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1755	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1756	>	r->pc() += 4;
1757	>	return;
1758	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1759	>	r->pc() += 4;
1760		return;
1761		}
1762
1763	+	// Get opcode and divide into fields
1764	+	uint32 opcode = *((uint32 *)r->pc());
1765	+	uint32 primop = opcode >> 26;
1766	+	uint32 exop = (opcode >> 1) & 0x3ff;
1767	+	uint32 ra = (opcode >> 16) & 0x1f;
1768	+	uint32 rb = (opcode >> 11) & 0x1f;
1769	+	uint32 rd = (opcode >> 21) & 0x1f;
1770	+	int32 imm = (int16)(opcode & 0xffff);
1771	+
1772		// Analyze opcode
1773		enum {
1774		TYPE_UNKNOWN,
#	Line 1466 | Line 1850 | static void sigsegv_handler(int sig, sig
1850		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1851		case 45:        // sthu
1852		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1853	<	}
1854	<
1855	<	// Calculate effective address
1856	<	uint32 addr = 0;
1857	<	switch (addr_mode) {
1858	<	case MODE_X:
1859	<	case MODE_UX:
1860	<	if (ra == 0)
1861	<	addr = r->gpr[rb];
1862	<	else
1863	<	addr = r->gpr[ra] + r->gpr[rb];
1864	<	break;
1481	<	case MODE_NORM:
1482	<	case MODE_U:
1483	<	if (ra == 0)
1484	<	addr = (int32)(int16)imm;
1485	<	else
1486	<	addr = r->gpr[ra] + (int32)(int16)imm;
1853	>	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1854	>	case 46:        // lmw
1855	>	if ((addr % 4) != 0) {
1856	>	uint32 ea = addr;
1857	>	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1858	>	for (int i = rd; i <= 31; i++) {
1859	>	r->gpr(i) = ReadMacInt32(ea);
1860	>	ea += 4;
1861	>	}
1862	>	r->pc() += 4;
1863	>	goto rti;
1864	>	}
1865		break;
1866	<	default:
1866	>	case 47:        // stmw
1867	>	if ((addr % 4) != 0) {
1868	>	uint32 ea = addr;
1869	>	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1870	>	for (int i = rd; i <= 31; i++) {
1871	>	WriteMacInt32(ea, r->gpr(i));
1872	>	ea += 4;
1873	>	}
1874	>	r->pc() += 4;
1875	>	goto rti;
1876	>	}
1877		break;
1878	+	#endif
1879		}
1880	<
1881	<	// Ignore ROM writes
1882	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1883	<	//                      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));
1880	>
1881	>	// Ignore ROM writes (including to the zero page, which is read-only)
1882	>	if (transfer_type == TYPE_STORE &&
1883	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) ||
1884	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1885	>	//                      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()));
1886		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1887	<	r->gpr[ra] = addr;
1888	<	r->nip += 4;
1887	>	r->gpr(ra) = addr;
1888	>	r->pc() += 4;
1889		goto rti;
1890		}
1891
1892		// Ignore illegal memory accesses?
1893		if (PrefsFindBool("ignoresegv")) {
1894		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1895	<	r->gpr[ra] = addr;
1895	>	r->gpr(ra) = addr;
1896		if (transfer_type == TYPE_LOAD)
1897	<	r->gpr[rd] = 0;
1898	<	r->nip += 4;
1897	>	r->gpr(rd) = 0;
1898	>	r->pc() += 4;
1899		goto rti;
1900		}
1901
#	Line 1512 | Line 1903 | static void sigsegv_handler(int sig, sig
1903		if (!PrefsFindBool("nogui")) {
1904		char str[256];
1905		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1906	<	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]);
1906	>	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));
1907		else
1908	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1908	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1909		ErrorAlert(str);
1910		QuitEmulator();
1911		return;
#	Line 1522 | Line 1913 | static void sigsegv_handler(int sig, sig
1913		}
1914
1915		// For all other errors, jump into debugger (sort of...)
1916	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1917		if (!ready_for_signals) {
1918	<	printf("SIGSEGV\n");
1919	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1918	>	printf("%s\n");
1919	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1920		printf(
1921		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1922		"  xer %08lx     cr %08lx  \n"
#	Line 1536 | Line 1928 | static void sigsegv_handler(int sig, sig
1928		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1929		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1930		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1931	<	r->nip, r->link, r->ctr, r->msr,
1932	<	r->xer, r->ccr,
1933	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1934	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1935	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1936	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1937	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1938	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1939	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1940	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1931	>	crash_reason,
1932	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1933	>	r->xer(), r->cr(),
1934	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1935	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1936	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1937	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1938	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1939	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1940	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1941	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1942		exit(1);
1943		QuitEmulator();
1944		return;
1945		} else {
1946		// We crashed. Save registers, tell tick thread and loop forever
1947	<	sigsegv_regs = *(sigregs *)r;
1947	>	build_sigregs(&sigsegv_regs, r);
1948		emul_thread_fatal = true;
1949		for (;;) ;
1950		}
#	Line 1563 | Line 1956 | rti:;
1956		*  SIGILL handler
1957		*/
1958
1959	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1959	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
1960		{
1961	<	pt_regs *r = sc->regs;
1961	>	machine_regs *r = MACHINE_REGISTERS(scp);
1962		char str[256];
1963
1964	+	#ifdef SYSTEM_CLOBBERS_R2
1965	+	// Restore pointer to Thread Local Storage
1966	+	set_r2(TOC);
1967	+	#endif
1968	+	#ifdef SYSTEM_CLOBBERS_R13
1969	+	// Restore pointer to .sdata section
1970	+	set_r13(R13);
1971	+	#endif
1972	+
1973		// Fault in Mac ROM or RAM?
1974	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1974	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1975		if (mac_fault) {
1976
1977		// Get opcode and divide into fields
1978	<	uint32 opcode = *((uint32 *)r->nip);
1978	>	uint32 opcode = *((uint32 *)r->pc());
1979		uint32 primop = opcode >> 26;
1980		uint32 exop = (opcode >> 1) & 0x3ff;
1981		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1584 | Line 1986 | static void sigill_handler(int sig, sigc
1986		switch (primop) {
1987		case 9:         // POWER instructions
1988		case 22:
1989	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
1989	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
1990		ErrorAlert(str);
1991		QuitEmulator();
1992		return;
#	Line 1592 | Line 1994 | power_inst:            sprintf(str, GetString(STR_
1994		case 31:
1995		switch (exop) {
1996		case 83:        // mfmsr
1997	<	r->gpr[rd] = 0xf072;
1998	<	r->nip += 4;
1997	>	r->gpr(rd) = 0xf072;
1998	>	r->pc() += 4;
1999		goto rti;
2000
2001		case 210:       // mtsr
2002		case 242:       // mtsrin
2003		case 306:       // tlbie
2004	<	r->nip += 4;
2004	>	r->pc() += 4;
2005		goto rti;
2006
2007		case 339: {     // mfspr
#	Line 1615 | Line 2017 | power_inst:            sprintf(str, GetString(STR_
2017		case 957:       // PMC3
2018		case 958:       // PMC4
2019		case 959:       // SDA
2020	<	r->nip += 4;
2020	>	r->pc() += 4;
2021		goto rti;
2022		case 25:        // SDR1
2023	<	r->gpr[rd] = 0xdead001f;
2024	<	r->nip += 4;
2023	>	r->gpr(rd) = 0xdead001f;
2024	>	r->pc() += 4;
2025		goto rti;
2026		case 287:       // PVR
2027	<	r->gpr[rd] = PVR;
2028	<	r->nip += 4;
2027	>	r->gpr(rd) = PVR;
2028	>	r->pc() += 4;
2029		goto rti;
2030		}
2031		break;
#	Line 1659 | Line 2061 | power_inst:            sprintf(str, GetString(STR_
2061		case 957:       // PMC3
2062		case 958:       // PMC4
2063		case 959:       // SDA
2064	<	r->nip += 4;
2064	>	r->pc() += 4;
2065		goto rti;
2066		}
2067		break;
#	Line 1678 | Line 2080 | power_inst:            sprintf(str, GetString(STR_
2080
2081		// In GUI mode, show error alert
2082		if (!PrefsFindBool("nogui")) {
2083	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
2083	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
2084		ErrorAlert(str);
2085		QuitEmulator();
2086		return;
#	Line 1686 | Line 2088 | power_inst:            sprintf(str, GetString(STR_
2088		}
2089
2090		// For all other errors, jump into debugger (sort of...)
2091	+	crash_reason = "SIGILL";
2092		if (!ready_for_signals) {
2093	<	printf("SIGILL\n");
2094	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
2093	>	printf("%s\n");
2094	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
2095		printf(
2096		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
2097		"  xer %08lx     cr %08lx  \n"
#	Line 1700 | Line 2103 | power_inst:            sprintf(str, GetString(STR_
2103		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
2104		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
2105		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
2106	<	r->nip, r->link, r->ctr, r->msr,
2107	<	r->xer, r->ccr,
2108	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2109	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2110	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2111	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2112	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2113	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2114	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2115	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2106	>	crash_reason,
2107	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2108	>	r->xer(), r->cr(),
2109	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2110	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2111	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2112	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2113	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2114	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2115	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2116	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2117		exit(1);
2118		QuitEmulator();
2119		return;
2120		} else {
2121		// We crashed. Save registers, tell tick thread and loop forever
2122	<	sigsegv_regs = *(sigregs *)r;
2122	>	build_sigregs(&sigsegv_regs, r);
2123		emul_thread_fatal = true;
2124		for (;;) ;
2125		}
#	Line 1725 | Line 2129 | rti:;
2129
2130
2131		/*
2132	+	*  Helpers to share 32-bit addressable data with MacOS
2133	+	*/
2134	+
2135	+	bool SheepMem::Init(void)
2136	+	{
2137	+	// Size of a native page
2138	+	page_size = getpagesize();
2139	+
2140	+	// Allocate SheepShaver globals
2141	+	proc = base;
2142	+	if (vm_mac_acquire(base, size) < 0)
2143	+	return false;
2144	+
2145	+	// Allocate page with all bits set to 0, right in the middle
2146	+	// This is also used to catch undesired overlaps between proc and data areas
2147	+	zero_page = proc + (size / 2);
2148	+	Mac_memset(zero_page, 0, page_size);
2149	+	if (vm_protect(Mac2HostAddr(zero_page), page_size, VM_PAGE_READ) < 0)
2150	+	return false;
2151	+
2152	+	#if EMULATED_PPC
2153	+	// Allocate alternate stack for PowerPC interrupt routine
2154	+	sig_stack = base + size;
2155	+	if (vm_mac_acquire(sig_stack, SIG_STACK_SIZE) < 0)
2156	+	return false;
2157	+	#endif
2158	+
2159	+	data = base + size;
2160	+	return true;
2161	+	}
2162	+
2163	+	void SheepMem::Exit(void)
2164	+	{
2165	+	if (data) {
2166	+	// Delete SheepShaver globals
2167	+	vm_mac_release(base, size);
2168	+
2169	+	#if EMULATED_PPC
2170	+	// Delete alternate stack for PowerPC interrupt routine
2171	+	vm_mac_release(sig_stack, SIG_STACK_SIZE);
2172	+	#endif
2173	+	}
2174	+	}
2175	+
2176	+
2177	+	/*
2178		*  Display alert
2179		*/
2180
#	Line 1773 | Line 2223 | void display_alert(int title_id, int pre
2223
2224		void ErrorAlert(const char *text)
2225		{
2226	<	#ifdef ENABLE_GTK
2226	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2227		if (PrefsFindBool("nogui") || x_display == NULL) {
2228		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2229		return;
#	Line 1792 | Line 2242 | void ErrorAlert(const char *text)
2242
2243		void WarningAlert(const char *text)
2244		{
2245	<	#ifdef ENABLE_GTK
2245	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2246		if (PrefsFindBool("nogui") || x_display == NULL) {
2247		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2248		return;

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