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

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.21 by gbeauche, 2003-12-31T18:16:55Z vs.
Revision 1.70 by gbeauche, 2005-07-06T04:58:34Z

#	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 212 | Line 224 | static uintptr sig_stack = 0;                          // Stac
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
232	–	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
245	–	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 308 | 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 323 | Line 359 | static void usage(const char *prg_name)
359		int main(int argc, char **argv)
360		{
361		char str[256];
326	–	uint32 *boot_globs;
327	–	int16 i16;
362		int rom_fd;
363		FILE *proc_file;
364		const char *rom_path;
#	Line 341 | 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 358 | 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 381 | 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	+	{ 0x7fff0000, 0x00810000, "82xx" },
593	+	{ 0x7fff0000, 0x00820000, "8280" },
594	+	{ 0xffff0000, 0x00400000, "Power3 (630)" },
595	+	{ 0xffff0000, 0x00410000, "Power3 (630+)" },
596	+	{ 0xffff0000, 0x00360000, "I-star" },
597	+	{ 0xffff0000, 0x00370000, "S-star" },
598	+	{ 0xffff0000, 0x00350000, "Power4" },
599	+	{ 0xffff0000, 0x00390000, "PPC970" },
600	+	{ 0xffff0000, 0x003a0000, "POWER5" },
601	+	{ 0, 0, 0 }
602	+	};
603	+
604		char line[256];
605		while(fgets(line, 255, proc_file)) {
606		// Read line
#	Line 405 | Line 612 | int main(int argc, char **argv)
612		// Parse line
613		int i;
614		char value[256];
615	<	if (sscanf(line, "cpu : %s", value) == 1) {
616	<	if (strcmp(value, "601") == 0)
617	<	PVR = 0x00010000;
618	<	else if (strcmp(value, "603") == 0)
619	<	PVR = 0x00030000;
620	<	else if (strcmp(value, "604") == 0)
621	<	PVR = 0x00040000;
622	<	else if (strcmp(value, "603e") == 0)
623	<	PVR = 0x00060000;
624	<	else if (strcmp(value, "603ev") == 0)
625	<	PVR = 0x00070000;
419	<	else if (strcmp(value, "604e") == 0)
420	<	PVR = 0x00090000;
421	<	else if (strcmp(value, "604ev5") == 0)
422	<	PVR = 0x000a0000;
423	<	else if (strcmp(value, "750") == 0)
424	<	PVR = 0x00080000;
425	<	else if (strcmp(value, "821") == 0)
426	<	PVR = 0x00320000;
427	<	else if (strcmp(value, "860") == 0)
428	<	PVR = 0x00500000;
429	<	else
615	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
616	>	// Search by name
617	>	const char *cpu_name = NULL;
618	>	for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
619	>	if (strcmp(cpu_specs[i].cpu_name, value) == 0) {
620	>	cpu_name = cpu_specs[i].cpu_name;
621	>	PVR = cpu_specs[i].pvr_value;
622	>	break;
623	>	}
624	>	}
625	>	if (cpu_name == NULL)
626		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
627	+	else
628	+	printf("Found a PowerPC %s processor\n", cpu_name);
629		}
630		if (sscanf(line, "clock : %dMHz", &i) == 1)
631		CPUClockSpeed = BusClockSpeed = i * 1000000;
#	Line 437 | Line 635 | int main(int argc, char **argv)
635		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
636		WarningAlert(str);
637		}
638	+
639	+	// Get actual bus frequency
640	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
641	+	if (proc_file) {
642	+	union { uint8 b[4]; uint32 l; } value;
643	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
644	+	BusClockSpeed = value.l;
645	+	fclose(proc_file);
646	+	}
647	+
648	+	// Get actual timebase frequency
649	+	TimebaseSpeed = BusClockSpeed / 4;
650	+	DIR *cpus_dir;
651	+	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
652	+	struct dirent *cpu_entry;
653	+	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
654	+	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
655	+	char timebase_freq_node[256];
656	+	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
657	+	proc_file = fopen(timebase_freq_node, "r");
658	+	if (proc_file) {
659	+	union { uint8 b[4]; uint32 l; } value;
660	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
661	+	TimebaseSpeed = value.l;
662	+	fclose(proc_file);
663	+	}
664	+	}
665	+	}
666	+	closedir(cpus_dir);
667	+	}
668		#endif
669	+	// Remap any newer G4/G5 processor to plain G4 for compatibility
670	+	switch (PVR >> 16) {
671	+	case 0x8000:                            // 7450
672	+	case 0x8001:                            // 7455
673	+	case 0x8002:                            // 7457
674	+	case 0x8003:                            // 7447A
675	+	case 0x0039:                            //  970
676	+	PVR = 0x000c0000;               // 7400
677	+	break;
678	+	}
679		D(bug("PVR: %08x (assumed)\n", PVR));
680
681		// Init system routines
#	Line 461 | Line 699 | int main(int argc, char **argv)
699		goto quit;
700		}
701
702	+	#ifndef PAGEZERO_HACK
703		// Create Low Memory area (0x0000..0x3000)
704	<	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
704	>	if (vm_mac_acquire(0, 0x3000) < 0) {
705		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
706		ErrorAlert(str);
707		goto quit;
708		}
709		lm_area_mapped = true;
710	+	#endif
711
712		// Create areas for Kernel Data
713	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
714	<	if (kernel_area == -1) {
715	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
713	>	if (!kernel_data_init())
714	>	goto quit;
715	>	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
716	>	emulator_data = &kernel_data->ed;
717	>	KernelDataAddr = KERNEL_DATA_BASE;
718	>	D(bug("Kernel Data at %p (%08x)\n", kernel_data, KERNEL_DATA_BASE));
719	>	D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
720	>
721	>	// Create area for DR Cache
722	>	if (vm_mac_acquire(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
723	>	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
724		ErrorAlert(str);
725		goto quit;
726		}
727	<	if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) {
728	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
727	>	dr_emulator_area_mapped = true;
728	>	if (vm_mac_acquire(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
729	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
730		ErrorAlert(str);
731		goto quit;
732		}
733	<	if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) {
734	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
733	>	dr_cache_area_mapped = true;
734	>	#if !EMULATED_PPC
735	>	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
736	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
737		ErrorAlert(str);
738		goto quit;
739		}
740	<	kernel_data = (KernelData *)KERNEL_DATA_BASE;
741	<	emulator_data = &kernel_data->ed;
742	<	KernelDataAddr = KERNEL_DATA_BASE;
492	<	D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
740	>	#endif
741	>	DRCacheAddr = DR_CACHE_BASE;
742	>	D(bug("DR Cache at %p\n", DRCacheAddr));
743
744		// Create area for SheepShaver data
745		if (!SheepMem::Init()) {
#	Line 499 | Line 749 | int main(int argc, char **argv)
749		}
750
751		// Create area for Mac ROM
752	<	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
752	>	if (vm_mac_acquire(ROM_BASE, ROM_AREA_SIZE) < 0) {
753		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
754		ErrorAlert(str);
755		goto quit;
756		}
757	<	#if !EMULATED_PPC || defined(__powerpc__)
758	<	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
757	>	ROMBaseHost = Mac2HostAddr(ROM_BASE);
758	>	#if !EMULATED_PPC
759	>	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
760		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
761		ErrorAlert(str);
762		goto quit;
763		}
764		#endif
765		rom_area_mapped = true;
766	<	D(bug("ROM area at %08x\n", ROM_BASE));
766	>	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROM_BASE));
767
768		// Create area for Mac RAM
769		RAMSize = PrefsFindInt32("ramsize");
#	Line 521 | Line 772 | int main(int argc, char **argv)
772		RAMSize = 8*1024*1024;
773		}
774
775	<	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
775	>	if (vm_mac_acquire(RAM_BASE, RAMSize) < 0) {
776		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
777		ErrorAlert(str);
778		goto quit;
779		}
780	+	RAMBaseHost = Mac2HostAddr(RAM_BASE);
781		#if !EMULATED_PPC
782	<	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
782	>	if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
783		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
784		ErrorAlert(str);
785		goto quit;
#	Line 535 | Line 787 | int main(int argc, char **argv)
787		#endif
788		RAMBase = RAM_BASE;
789		ram_area_mapped = true;
790	<	D(bug("RAM area at %08x\n", RAMBase));
790	>	D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
791
792		if (RAMBase > ROM_BASE) {
793		ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
#	Line 571 | Line 823 | int main(int argc, char **argv)
823		}
824		delete[] rom_tmp;
825
826	<	// Load NVRAM
827	<	XPRAMInit();
576	<
577	<	// Set boot volume
578	<	i16 = PrefsFindInt32("bootdrive");
579	<	XPRAM[0x1378] = i16 >> 8;
580	<	XPRAM[0x1379] = i16 & 0xff;
581	<	i16 = PrefsFindInt32("bootdriver");
582	<	XPRAM[0x137a] = i16 >> 8;
583	<	XPRAM[0x137b] = i16 & 0xff;
584	<
585	<	// Create BootGlobs at top of Mac memory
586	<	memset((void *)(RAMBase + RAMSize - 4096), 0, 4096);
587	<	BootGlobsAddr = RAMBase + RAMSize - 0x1c;
588	<	boot_globs = (uint32 *)BootGlobsAddr;
589	<	boot_globs[-5] = htonl(RAMBase + RAMSize);      // MemTop
590	<	boot_globs[0] = htonl(RAMBase);                         // First RAM bank
591	<	boot_globs[1] = htonl(RAMSize);
592	<	boot_globs[2] = htonl((uint32)-1);                      // End of bank table
593	<
594	<	// Init thunks
595	<	if (!ThunksInit())
826	>	// Initialize everything
827	>	if (!InitAll())
828		goto quit;
829	<
598	<	// Init drivers
599	<	SonyInit();
600	<	DiskInit();
601	<	CDROMInit();
602	<	SCSIInit();
603	<
604	<	// Init external file system
605	<	ExtFSInit();
606	<
607	<	// Init audio
608	<	AudioInit();
609	<
610	<	// Init network
611	<	EtherInit();
612	<
613	<	// Init serial ports
614	<	SerialInit();
615	<
616	<	// Init Time Manager
617	<	TimerInit();
618	<
619	<	// Init clipboard
620	<	ClipInit();
621	<
622	<	// Init video
623	<	if (!VideoInit())
624	<	goto quit;
625	<
626	<	// Install ROM patches
627	<	if (!PatchROM()) {
628	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
629	<	goto quit;
630	<	}
829	>	D(bug("Initialization complete\n"));
830
831		// Clear caches (as we loaded and patched code) and write protect ROM
832		#if !EMULATED_PPC
833	<	MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
635	<	#endif
636	<	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
637	<
638	<	// Initialize Kernel Data
639	<	memset(kernel_data, 0, sizeof(KernelData));
640	<	if (ROMType == ROMTYPE_NEWWORLD) {
641	<	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
642	<	memset((void *)of_dev_tree, 0, 4 * sizeof(uint32));
643	<	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
644	<	uintptr vector_mask_tbl = SheepMem::Reserve(64);
645	<	memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
646	<	memset((void *)vector_lookup_tbl, 0, 128);
647	<	memset((void *)vector_mask_tbl, 0, 64);
648	<	kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
649	<	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree);                        // OF device tree base
650	<	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
651	<	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
652	<	kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
653	<	kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
654	<	kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
655	<	kernel_data->v[0xc24 >> 2] = htonl(RAMSize);
656	<	kernel_data->v[0xc30 >> 2] = htonl(RAMSize);
657	<	kernel_data->v[0xc34 >> 2] = htonl(RAMSize);
658	<	kernel_data->v[0xc38 >> 2] = htonl(0x00010020);
659	<	kernel_data->v[0xc3c >> 2] = htonl(0x00200001);
660	<	kernel_data->v[0xc40 >> 2] = htonl(0x00010000);
661	<	kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
662	<	kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
663	<	kernel_data->v[0xf60 >> 2] = htonl(PVR);
664	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
665	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
666	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
667	<	} else {
668	<	kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
669	<	kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
670	<	kernel_data->v[0xc90 >> 2] = htonl(RAMSize);
671	<	kernel_data->v[0xc94 >> 2] = htonl(RAMSize);
672	<	kernel_data->v[0xc98 >> 2] = htonl(0x00010020);
673	<	kernel_data->v[0xc9c >> 2] = htonl(0x00200001);
674	<	kernel_data->v[0xca0 >> 2] = htonl(0x00010000);
675	<	kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
676	<	kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
677	<	kernel_data->v[0xf80 >> 2] = htonl(PVR);
678	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
679	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
680	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
681	<	}
682	<
683	<	// Initialize extra low memory
684	<	D(bug("Initializing Low Memory...\n"));
685	<	memset(NULL, 0, 0x3000);
686	<	WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
687	<	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr);                                 // For trap replacement routines
688	<	WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
689	<	WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
690	<	WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
691	<	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage());                             // Pointer to read-only page with all bits set to 0
692	<	#if !EMULATED_PPC
693	<	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                            // TOC pointer of emulator
833	>	flush_icache_range(ROM_BASE, ROM_BASE + ROM_AREA_SIZE);
834		#endif
835	<	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT));       // DLPI ethernet driver functions
696	<	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
697	<	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
698	<	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
699	<	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
700	<	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
701	<	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
702	<	D(bug("Low Memory initialized\n"));
835	>	vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
836
837		// Start 60Hz thread
838	+	tick_thread_cancel = false;
839		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
840		D(bug("Tick thread installed (%ld)\n", tick_thread));
841
842		// Start NVRAM watchdog thread
843		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
844	+	nvram_thread_cancel = false;
845		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
846		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
847
848		#if !EMULATED_PPC
714	–	// Create and install stacks for signal handlers
715	–	sig_stack = malloc(SIG_STACK_SIZE);
716	–	D(bug("Signal stack at %p\n", sig_stack));
717	–	if (sig_stack == NULL) {
718	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
719	–	goto quit;
720	–	}
721	–	extra_stack = malloc(SIG_STACK_SIZE);
722	–	D(bug("Extra stack at %p\n", extra_stack));
723	–	if (extra_stack == NULL) {
724	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
725	–	goto quit;
726	–	}
727	–	struct sigaltstack new_stack;
728	–	new_stack.ss_sp = sig_stack;
729	–	new_stack.ss_flags = 0;
730	–	new_stack.ss_size = SIG_STACK_SIZE;
731	–	if (sigaltstack(&new_stack, NULL) < 0) {
732	–	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
733	–	ErrorAlert(str);
734	–	goto quit;
735	–	}
736	–	#endif
737	–
738	–	#if !EMULATED_PPC
739	–	// Install SIGSEGV handler
740	–	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
741	–	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
742	–	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
743	–	sigsegv_action.sa_flags = SA_ONSTACK;
744	–	sigsegv_action.sa_restorer = NULL;
745	–	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
746	–	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
747	–	ErrorAlert(str);
748	–	goto quit;
749	–	}
750	–
849		// Install SIGILL handler
850		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
851		sigaddset(&sigill_action.sa_mask, SIGUSR2);
852	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
853	<	sigill_action.sa_flags = SA_ONSTACK;
852	>	sigill_action.sa_sigaction = sigill_handler;
853	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
854	>	#ifdef HAVE_SIGNAL_SA_RESTORER
855		sigill_action.sa_restorer = NULL;
856	+	#endif
857		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
858		sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
859		ErrorAlert(str);
#	Line 761 | Line 861 | int main(int argc, char **argv)
861		}
862		#endif
863
864	+	#if !EMULATED_PPC
865		// Install interrupt signal handler
866		sigemptyset(&sigusr2_action.sa_mask);
867	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
868	<	sigusr2_action.sa_flags = 0;
869	<	#if !EMULATED_PPC
769	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
770	<	#endif
867	>	sigusr2_action.sa_sigaction = sigusr2_handler_init;
868	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
869	>	#ifdef HAVE_SIGNAL_SA_RESTORER
870		sigusr2_action.sa_restorer = NULL;
871	+	#endif
872		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
873		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
874		ErrorAlert(str);
875		goto quit;
876		}
877	+	#endif
878
879		// Get my thread ID and execute MacOS thread function
880		emul_thread = pthread_self();
#	Line 799 | Line 900 | static void Quit(void)
900
901		// Stop 60Hz thread
902		if (tick_thread_active) {
903	+	tick_thread_cancel = true;
904		pthread_cancel(tick_thread);
905		pthread_join(tick_thread, NULL);
906		}
907
908		// Stop NVRAM watchdog thread
909		if (nvram_thread_active) {
910	+	nvram_thread_cancel = true;
911		pthread_cancel(nvram_thread);
912		pthread_join(nvram_thread, NULL);
913		}
914
915		#if !EMULATED_PPC
916	<	// Uninstall SIGSEGV handler
916	>	// Uninstall SIGSEGV and SIGBUS handlers
917		sigemptyset(&sigsegv_action.sa_mask);
918		sigsegv_action.sa_handler = SIG_DFL;
919		sigsegv_action.sa_flags = 0;
920		sigaction(SIGSEGV, &sigsegv_action, NULL);
921	+	sigaction(SIGBUS, &sigsegv_action, NULL);
922
923		// Uninstall SIGILL handler
924		sigemptyset(&sigill_action.sa_mask);
925		sigill_action.sa_handler = SIG_DFL;
926		sigill_action.sa_flags = 0;
927		sigaction(SIGILL, &sigill_action, NULL);
824	–	#endif
825	–
826	–	// Save NVRAM
827	–	XPRAMExit();
828	–
829	–	// Exit clipboard
830	–	ClipExit();
831	–
832	–	// Exit Time Manager
833	–	TimerExit();
834	–
835	–	// Exit serial
836	–	SerialExit();
928
929	<	// Exit network
930	<	EtherExit();
931	<
932	<	// Exit audio
933	<	AudioExit();
934	<
844	<	// Exit video
845	<	VideoExit();
846	<
847	<	// Exit external file system
848	<	ExtFSExit();
929	>	// Delete stacks for signal handlers
930	>	if (sig_stack.ss_sp)
931	>	free(sig_stack.ss_sp);
932	>	if (extra_stack.ss_sp)
933	>	free(extra_stack.ss_sp);
934	>	#endif
935
936	<	// Exit drivers
937	<	SCSIExit();
852	<	CDROMExit();
853	<	DiskExit();
854	<	SonyExit();
936	>	// Deinitialize everything
937	>	ExitAll();
938
939		// Delete SheepShaver globals
940		SheepMem::Exit();
941
942		// Delete RAM area
943		if (ram_area_mapped)
944	<	vm_release((char *)RAM_BASE, RAMSize);
944	>	vm_mac_release(RAM_BASE, RAMSize);
945
946		// Delete ROM area
947		if (rom_area_mapped)
948	<	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
948	>	vm_mac_release(ROM_BASE, ROM_AREA_SIZE);
949	>
950	>	// Delete DR cache areas
951	>	if (dr_emulator_area_mapped)
952	>	vm_mac_release(DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
953	>	if (dr_cache_area_mapped)
954	>	vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
955
956		// Delete Kernel Data area
957	<	if (kernel_area >= 0) {
869	<	shmdt((void *)KERNEL_DATA_BASE);
870	<	shmdt((void *)KERNEL_DATA2_BASE);
871	<	shmctl(kernel_area, IPC_RMID, NULL);
872	<	}
957	>	kernel_data_exit();
958
959		// Delete Low Memory area
960		if (lm_area_mapped)
961	<	munmap((char *)0x0000, 0x3000);
961	>	vm_mac_release(0, 0x3000);
962
963		// Close /dev/zero
964		if (zero_fd > 0)
#	Line 891 | Line 976 | static void Quit(void)
976		#endif
977
978		// Close X11 server connection
979	+	#ifndef USE_SDL_VIDEO
980		if (x_display)
981		XCloseDisplay(x_display);
982	+	#endif
983
984		exit(0);
985		}
986
987
988		/*
989	+	*  Initialize Kernel Data segments
990	+	*/
991	+
992	+	#if defined(__CYGWIN__)
993	+	#define WIN32_LEAN_AND_MEAN
994	+	#include <windows.h>
995	+
996	+	static HANDLE kernel_handle;                            // Shared memory handle for Kernel Data
997	+	static DWORD allocation_granule;                        // Minimum size of allocateable are (64K)
998	+	static DWORD kernel_area_size;                          // Size of Kernel Data area
999	+	#endif
1000	+
1001	+	static bool kernel_data_init(void)
1002	+	{
1003	+	char str[256];
1004	+	#ifdef _WIN32
1005	+	SYSTEM_INFO si;
1006	+	GetSystemInfo(&si);
1007	+	allocation_granule = si.dwAllocationGranularity;
1008	+	kernel_area_size = (KERNEL_AREA_SIZE + allocation_granule - 1) & -allocation_granule;
1009	+
1010	+	char rcs[10];
1011	+	LPVOID kernel_addr;
1012	+	kernel_handle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, kernel_area_size, NULL);
1013	+	if (kernel_handle == NULL) {
1014	+	sprintf(rcs, "%d", GetLastError());
1015	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), rcs);
1016	+	ErrorAlert(str);
1017	+	return false;
1018	+	}
1019	+	kernel_addr = (LPVOID)Mac2HostAddr(KERNEL_DATA_BASE & -allocation_granule);
1020	+	if (MapViewOfFileEx(kernel_handle, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, kernel_area_size, kernel_addr) != kernel_addr) {
1021	+	sprintf(rcs, "%d", GetLastError());
1022	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), rcs);
1023	+	ErrorAlert(str);
1024	+	return false;
1025	+	}
1026	+	kernel_addr = (LPVOID)Mac2HostAddr(KERNEL_DATA2_BASE & -allocation_granule);
1027	+	if (MapViewOfFileEx(kernel_handle, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, kernel_area_size, kernel_addr) != kernel_addr) {
1028	+	sprintf(rcs, "%d", GetLastError());
1029	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), rcs);
1030	+	ErrorAlert(str);
1031	+	return false;
1032	+	}
1033	+	#else
1034	+	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
1035	+	if (kernel_area == -1) {
1036	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1037	+	ErrorAlert(str);
1038	+	return false;
1039	+	}
1040	+	if (shmat(kernel_area, Mac2HostAddr(KERNEL_DATA_BASE), 0) < 0) {
1041	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1042	+	ErrorAlert(str);
1043	+	return false;
1044	+	}
1045	+	if (shmat(kernel_area, Mac2HostAddr(KERNEL_DATA2_BASE), 0) < 0) {
1046	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1047	+	ErrorAlert(str);
1048	+	return false;
1049	+	}
1050	+	#endif
1051	+	return true;
1052	+	}
1053	+
1054	+
1055	+	/*
1056	+	*  Deallocate Kernel Data segments
1057	+	*/
1058	+
1059	+	static void kernel_data_exit(void)
1060	+	{
1061	+	#ifdef _WIN32
1062	+	if (kernel_handle) {
1063	+	UnmapViewOfFile(Mac2HostAddr(KERNEL_DATA_BASE & -allocation_granule));
1064	+	UnmapViewOfFile(Mac2HostAddr(KERNEL_DATA2_BASE & -allocation_granule));
1065	+	CloseHandle(kernel_handle);
1066	+	}
1067	+	#else
1068	+	if (kernel_area >= 0) {
1069	+	shmdt(Mac2HostAddr(KERNEL_DATA_BASE));
1070	+	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE));
1071	+	shmctl(kernel_area, IPC_RMID, NULL);
1072	+	}
1073	+	#endif
1074	+	}
1075	+
1076	+
1077	+	/*
1078		*  Jump into Mac ROM, start 680x0 emulator
1079		*/
1080
#	Line 985 | Line 1161 | void QuitEmulator(void)
1161
1162
1163		/*
988	–	*  Pause/resume emulator
989	–	*/
990	–
991	–	void PauseEmulator(void)
992	–	{
993	–	pthread_kill(emul_thread, SIGSTOP);
994	–	}
995	–
996	–	void ResumeEmulator(void)
997	–	{
998	–	pthread_kill(emul_thread, SIGCONT);
999	–	}
1000	–
1001	–
1002	–	/*
1164		*  Dump 68k registers
1165		*/
1166
#	Line 1027 | Line 1188 | void Dump68kRegs(M68kRegisters *r)
1188		*  Make code executable
1189		*/
1190
1191	<	void MakeExecutable(int dummy, void *start, uint32 length)
1191	>	void MakeExecutable(int dummy, uint32 start, uint32 length)
1192		{
1193	<	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1193	>	if ((start >= ROM_BASE) && (start < (ROM_BASE + ROM_SIZE)))
1194		return;
1195		#if EMULATED_PPC
1196	<	FlushCodeCache((uintptr)start, (uintptr)start + length);
1196	>	FlushCodeCache(start, start + length);
1197		#else
1198	<	flush_icache_range(start, (void *)((uintptr)start + length));
1198	>	flush_icache_range(start, start + length);
1199		#endif
1200		}
1201
1202
1203		/*
1204	<	*  Patch things after system startup (gets called by disk driver accRun routine)
1204	>	*  NVRAM watchdog thread (saves NVRAM every minute)
1205		*/
1206
1207	<	void PatchAfterStartup(void)
1207	>	static void nvram_watchdog(void)
1208		{
1209	<	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1210	<	InstallExtFS();
1209	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1210	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1211	>	SaveXPRAM();
1212	>	}
1213		}
1214
1052	–
1053	–	/*
1054	–	*  NVRAM watchdog thread (saves NVRAM every minute)
1055	–	*/
1056	–
1215		static void *nvram_func(void *arg)
1216		{
1217	<	struct timespec req = {60, 0};  // 1 minute
1218	<
1219	<	for (;;) {
1220	<	pthread_testcancel();
1063	<	nanosleep(&req, NULL);
1064	<	pthread_testcancel();
1065	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1066	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1067	<	SaveXPRAM();
1068	<	}
1217	>	while (!nvram_thread_cancel) {
1218	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1219	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1220	>	nvram_watchdog();
1221		}
1222		return NULL;
1223		}
#	Line 1078 | Line 1230 | static void *nvram_func(void *arg)
1230		static void *tick_func(void *arg)
1231		{
1232		int tick_counter = 0;
1233	<	struct timespec req = {0, 16625000};
1233	>	uint64 start = GetTicks_usec();
1234	>	int64 ticks = 0;
1235	>	uint64 next = GetTicks_usec();
1236
1237	<	for (;;) {
1237	>	while (!tick_thread_cancel) {
1238
1239		// Wait
1240	<	nanosleep(&req, NULL);
1240	>	next += 16625;
1241	>	int64 delay = next - GetTicks_usec();
1242	>	if (delay > 0)
1243	>	Delay_usec(delay);
1244	>	else if (delay < -16625)
1245	>	next = GetTicks_usec();
1246	>	ticks++;
1247
1248		#if !EMULATED_PPC
1249		// Did we crash?
1250		if (emul_thread_fatal) {
1251
1252		// Yes, dump registers
1253	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1253	>	sigregs *r = &sigsegv_regs;
1254		char str[256];
1255	<	sprintf(str, "SIGSEGV\n"
1255	>	if (crash_reason == NULL)
1256	>	crash_reason = "SIGSEGV";
1257	>	sprintf(str, "%s\n"
1258		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1259		"  xer %08lx     cr %08lx  \n"
1260		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1103 | Line 1265 | static void *tick_func(void *arg)
1265		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1266		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1267		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1268	+	crash_reason,
1269		r->nip, r->link, r->ctr, r->msr,
1270		r->xer, r->ccr,
1271		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1138 | Line 1301 | static void *tick_func(void *arg)
1301		TriggerInterrupt();
1302		}
1303		}
1304	+
1305	+	uint64 end = GetTicks_usec();
1306	+	D(bug("%lld ticks in %lld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1307		return NULL;
1308		}
1309
#	Line 1187 | Line 1353 | struct B2_mutex {
1353		pthread_mutexattr_init(&attr);
1354		// Initialize the mutex for priority inheritance --
1355		// required for accurate timing.
1356	<	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1356	>	#if defined(HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL) && !defined(__CYGWIN__)
1357		pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1358		#endif
1359		#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
#	Line 1258 | Line 1424 | void B2_delete_mutex(B2_mutex *mutex)
1424		*  Trigger signal USR2 from another thread
1425		*/
1426
1427	<	#if !EMULATED_PPC || ASYNC_IRQ
1427	>	#if !EMULATED_PPC
1428		void TriggerInterrupt(void)
1429		{
1430	<	if (ready_for_signals)
1430	>	if (ready_for_signals) {
1431	>	idle_resume();
1432		pthread_kill(emul_thread, SIGUSR2);
1433	+	}
1434		}
1435		#endif
1436
#	Line 1290 | Line 1458 | void ClearInterruptFlag(uint32 flag)
1458
1459		void DisableInterrupt(void)
1460		{
1461	+	#if EMULATED_PPC
1462	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1463	+	#else
1464		atomic_add((int *)XLM_IRQ_NEST, 1);
1465	+	#endif
1466		}
1467
1468
#	Line 1300 | Line 1472 | void DisableInterrupt(void)
1472
1473		void EnableInterrupt(void)
1474		{
1475	+	#if EMULATED_PPC
1476	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1477	+	#else
1478		atomic_add((int *)XLM_IRQ_NEST, -1);
1479	+	#endif
1480		}
1481
1482
#	Line 1308 | Line 1484 | void EnableInterrupt(void)
1484		*  USR2 handler
1485		*/
1486
1487	<	#if EMULATED_PPC
1488	<	static void sigusr2_handler(int sig)
1487	>	#if !EMULATED_PPC
1488	>	void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1489		{
1490	<	#if ASYNC_IRQ
1491	<	extern void HandleInterrupt(void);
1492	<	HandleInterrupt();
1490	>	machine_regs *r = MACHINE_REGISTERS(scp);
1491	>
1492	>	#ifdef SYSTEM_CLOBBERS_R2
1493	>	// Restore pointer to Thread Local Storage
1494	>	set_r2(TOC);
1495	>	#endif
1496	>	#ifdef SYSTEM_CLOBBERS_R13
1497	>	// Restore pointer to .sdata section
1498	>	set_r13(R13);
1499	>	#endif
1500	>
1501	>	#ifdef USE_SDL_VIDEO
1502	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1503	>	SDL_PumpEvents();
1504		#endif
1318	–	}
1319	–	#else
1320	–	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1321	–	{
1322	–	pt_regs *r = sc->regs;
1505
1506		// Do nothing if interrupts are disabled
1507		if (*(int32 *)XLM_IRQ_NEST > 0)
#	Line 1333 | Line 1515 | static void sigusr2_handler(int sig, sig
1515		case MODE_68K:
1516		// 68k emulator active, trigger 68k interrupt level 1
1517		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1518	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1518	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1519		break;
1520
1521		#if INTERRUPTS_IN_NATIVE_MODE
1522		case MODE_NATIVE:
1523		// 68k emulator inactive, in nanokernel?
1524	<	if (r->gpr[1] != KernelDataAddr) {
1524	>	if (r->gpr(1) != KernelDataAddr) {
1525	>
1526	>	// Set extra stack for SIGSEGV handler
1527	>	sigaltstack(&extra_stack, NULL);
1528	>
1529		// Prepare for 68k interrupt level 1
1530		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1531		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1532
1533		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1534	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1534	>	DisableInterrupt();
1535		if (ROMType == ROMTYPE_NEWWORLD)
1536		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1537		else
1538		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1539	+
1540	+	// Reset normal stack
1541	+	sigaltstack(&sig_stack, NULL);
1542		}
1543		break;
1544		#endif
#	Line 1360 | Line 1549 | static void sigusr2_handler(int sig, sig
1549		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1550
1551		// Set extra stack for SIGSEGV handler
1552	<	struct sigaltstack new_stack;
1364	<	new_stack.ss_sp = extra_stack;
1365	<	new_stack.ss_flags = 0;
1366	<	new_stack.ss_size = SIG_STACK_SIZE;
1367	<	sigaltstack(&new_stack, NULL);
1552	>	sigaltstack(&extra_stack, NULL);
1553		#if 1
1554		// Execute full 68k interrupt routine
1555		M68kRegisters r;
#	Line 1390 | Line 1575 | static void sigusr2_handler(int sig, sig
1575		}
1576		}
1577		#endif
1578	<	// Reset normal signal stack
1579	<	new_stack.ss_sp = sig_stack;
1395	<	new_stack.ss_flags = 0;
1396	<	new_stack.ss_size = SIG_STACK_SIZE;
1397	<	sigaltstack(&new_stack, NULL);
1578	>	// Reset normal stack
1579	>	sigaltstack(&sig_stack, NULL);
1580		}
1581		break;
1582		#endif
#	Line 1408 | Line 1590 | static void sigusr2_handler(int sig, sig
1590		*/
1591
1592		#if !EMULATED_PPC
1593	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1593	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1594		{
1595	<	pt_regs *r = sc->regs;
1595	>	machine_regs *r = MACHINE_REGISTERS(scp);
1596
1597		// Get effective address
1598	<	uint32 addr = r->dar;
1598	>	uint32 addr = r->dar();
1599
1600	+	#ifdef SYSTEM_CLOBBERS_R2
1601	+	// Restore pointer to Thread Local Storage
1602	+	set_r2(TOC);
1603	+	#endif
1604	+	#ifdef SYSTEM_CLOBBERS_R13
1605	+	// Restore pointer to .sdata section
1606	+	set_r13(R13);
1607	+	#endif
1608	+
1609		#if ENABLE_VOSF
1610		// Handle screen fault.
1611		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1612	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1612	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1613		return;
1614		#endif
1615
1616		num_segv++;
1617
1618	<	// Fault in Mac ROM or RAM?
1619	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1618	>	// Fault in Mac ROM or RAM or DR Cache?
1619	>	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));
1620		if (mac_fault) {
1621
1622		// "VM settings" during MacOS 8 installation
1623	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1624	<	r->nip += 4;
1625	<	r->gpr[8] = 0;
1623	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1624	>	r->pc() += 4;
1625	>	r->gpr(8) = 0;
1626		return;
1627
1628		// MacOS 8.5 installation
1629	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1630	<	r->nip += 4;
1631	<	r->gpr[8] = 0;
1629	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1630	>	r->pc() += 4;
1631	>	r->gpr(8) = 0;
1632		return;
1633
1634		// MacOS 8 serial drivers on startup
1635	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1636	<	r->nip += 4;
1637	<	r->gpr[8] = 0;
1635	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1636	>	r->pc() += 4;
1637	>	r->gpr(8) = 0;
1638		return;
1639
1640		// MacOS 8.1 serial drivers on startup
1641	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1642	<	r->nip += 4;
1641	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1642	>	r->pc() += 4;
1643	>	return;
1644	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1645	>	r->pc() += 4;
1646		return;
1647	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1648	<	r->nip += 4;
1647	>
1648	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1649	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1650	>	r->pc() += 4;
1651	>	return;
1652	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1653	>	r->pc() += 4;
1654		return;
1655		}
1656
1657		// Get opcode and divide into fields
1658	<	uint32 opcode = *((uint32 *)r->nip);
1658	>	uint32 opcode = *((uint32 *)r->pc());
1659		uint32 primop = opcode >> 26;
1660		uint32 exop = (opcode >> 1) & 0x3ff;
1661		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1545 | Line 1744 | static void sigsegv_handler(int sig, sig
1744		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1745		case 45:        // sthu
1746		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1747	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1748	+	case 46:        // lmw
1749	+	if ((addr % 4) != 0) {
1750	+	uint32 ea = addr;
1751	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1752	+	for (int i = rd; i <= 31; i++) {
1753	+	r->gpr(i) = ReadMacInt32(ea);
1754	+	ea += 4;
1755	+	}
1756	+	r->pc() += 4;
1757	+	goto rti;
1758	+	}
1759	+	break;
1760	+	case 47:        // stmw
1761	+	if ((addr % 4) != 0) {
1762	+	uint32 ea = addr;
1763	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1764	+	for (int i = rd; i <= 31; i++) {
1765	+	WriteMacInt32(ea, r->gpr(i));
1766	+	ea += 4;
1767	+	}
1768	+	r->pc() += 4;
1769	+	goto rti;
1770	+	}
1771	+	break;
1772	+	#endif
1773		}
1774
1775	<	// Ignore ROM writes
1776	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1777	<	//                      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));
1775	>	// Ignore ROM writes (including to the zero page, which is read-only)
1776	>	if (transfer_type == TYPE_STORE &&
1777	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) ||
1778	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1779	>	//                      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()));
1780		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1781	<	r->gpr[ra] = addr;
1782	<	r->nip += 4;
1781	>	r->gpr(ra) = addr;
1782	>	r->pc() += 4;
1783		goto rti;
1784		}
1785
1786		// Ignore illegal memory accesses?
1787		if (PrefsFindBool("ignoresegv")) {
1788		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1789	<	r->gpr[ra] = addr;
1789	>	r->gpr(ra) = addr;
1790		if (transfer_type == TYPE_LOAD)
1791	<	r->gpr[rd] = 0;
1792	<	r->nip += 4;
1791	>	r->gpr(rd) = 0;
1792	>	r->pc() += 4;
1793		goto rti;
1794		}
1795
#	Line 1570 | Line 1797 | static void sigsegv_handler(int sig, sig
1797		if (!PrefsFindBool("nogui")) {
1798		char str[256];
1799		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1800	<	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]);
1800	>	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));
1801		else
1802	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1802	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1803		ErrorAlert(str);
1804		QuitEmulator();
1805		return;
#	Line 1580 | Line 1807 | static void sigsegv_handler(int sig, sig
1807		}
1808
1809		// For all other errors, jump into debugger (sort of...)
1810	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1811		if (!ready_for_signals) {
1812	<	printf("SIGSEGV\n");
1813	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1812	>	printf("%s\n");
1813	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1814		printf(
1815		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1816		"  xer %08lx     cr %08lx  \n"
#	Line 1594 | Line 1822 | static void sigsegv_handler(int sig, sig
1822		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1823		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1824		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1825	<	r->nip, r->link, r->ctr, r->msr,
1826	<	r->xer, r->ccr,
1827	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1828	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1829	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1830	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1831	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1832	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1833	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1834	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1825	>	crash_reason,
1826	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1827	>	r->xer(), r->cr(),
1828	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1829	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1830	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1831	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1832	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1833	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1834	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1835	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1836		exit(1);
1837		QuitEmulator();
1838		return;
1839		} else {
1840		// We crashed. Save registers, tell tick thread and loop forever
1841	<	sigsegv_regs = *(sigregs *)r;
1841	>	build_sigregs(&sigsegv_regs, r);
1842		emul_thread_fatal = true;
1843		for (;;) ;
1844		}
#	Line 1621 | Line 1850 | rti:;
1850		*  SIGILL handler
1851		*/
1852
1853	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1853	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
1854		{
1855	<	pt_regs *r = sc->regs;
1855	>	machine_regs *r = MACHINE_REGISTERS(scp);
1856		char str[256];
1857
1858	+	#ifdef SYSTEM_CLOBBERS_R2
1859	+	// Restore pointer to Thread Local Storage
1860	+	set_r2(TOC);
1861	+	#endif
1862	+	#ifdef SYSTEM_CLOBBERS_R13
1863	+	// Restore pointer to .sdata section
1864	+	set_r13(R13);
1865	+	#endif
1866	+
1867		// Fault in Mac ROM or RAM?
1868	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1868	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1869		if (mac_fault) {
1870
1871		// Get opcode and divide into fields
1872	<	uint32 opcode = *((uint32 *)r->nip);
1872	>	uint32 opcode = *((uint32 *)r->pc());
1873		uint32 primop = opcode >> 26;
1874		uint32 exop = (opcode >> 1) & 0x3ff;
1875		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1642 | Line 1880 | static void sigill_handler(int sig, sigc
1880		switch (primop) {
1881		case 9:         // POWER instructions
1882		case 22:
1883	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
1883	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
1884		ErrorAlert(str);
1885		QuitEmulator();
1886		return;
#	Line 1650 | Line 1888 | power_inst:            sprintf(str, GetString(STR_
1888		case 31:
1889		switch (exop) {
1890		case 83:        // mfmsr
1891	<	r->gpr[rd] = 0xf072;
1892	<	r->nip += 4;
1891	>	r->gpr(rd) = 0xf072;
1892	>	r->pc() += 4;
1893		goto rti;
1894
1895		case 210:       // mtsr
1896		case 242:       // mtsrin
1897		case 306:       // tlbie
1898	<	r->nip += 4;
1898	>	r->pc() += 4;
1899		goto rti;
1900
1901		case 339: {     // mfspr
#	Line 1673 | Line 1911 | power_inst:            sprintf(str, GetString(STR_
1911		case 957:       // PMC3
1912		case 958:       // PMC4
1913		case 959:       // SDA
1914	<	r->nip += 4;
1914	>	r->pc() += 4;
1915		goto rti;
1916		case 25:        // SDR1
1917	<	r->gpr[rd] = 0xdead001f;
1918	<	r->nip += 4;
1917	>	r->gpr(rd) = 0xdead001f;
1918	>	r->pc() += 4;
1919		goto rti;
1920		case 287:       // PVR
1921	<	r->gpr[rd] = PVR;
1922	<	r->nip += 4;
1921	>	r->gpr(rd) = PVR;
1922	>	r->pc() += 4;
1923		goto rti;
1924		}
1925		break;
#	Line 1717 | Line 1955 | power_inst:            sprintf(str, GetString(STR_
1955		case 957:       // PMC3
1956		case 958:       // PMC4
1957		case 959:       // SDA
1958	<	r->nip += 4;
1958	>	r->pc() += 4;
1959		goto rti;
1960		}
1961		break;
#	Line 1736 | Line 1974 | power_inst:            sprintf(str, GetString(STR_
1974
1975		// In GUI mode, show error alert
1976		if (!PrefsFindBool("nogui")) {
1977	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1977	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1978		ErrorAlert(str);
1979		QuitEmulator();
1980		return;
#	Line 1744 | Line 1982 | power_inst:            sprintf(str, GetString(STR_
1982		}
1983
1984		// For all other errors, jump into debugger (sort of...)
1985	+	crash_reason = "SIGILL";
1986		if (!ready_for_signals) {
1987	<	printf("SIGILL\n");
1988	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1987	>	printf("%s\n");
1988	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1989		printf(
1990		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1991		"  xer %08lx     cr %08lx  \n"
#	Line 1758 | Line 1997 | power_inst:            sprintf(str, GetString(STR_
1997		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1998		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1999		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
2000	<	r->nip, r->link, r->ctr, r->msr,
2001	<	r->xer, r->ccr,
2002	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2003	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2004	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2005	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2006	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2007	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2008	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2009	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2000	>	crash_reason,
2001	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2002	>	r->xer(), r->cr(),
2003	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2004	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2005	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2006	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2007	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2008	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2009	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2010	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2011		exit(1);
2012		QuitEmulator();
2013		return;
2014		} else {
2015		// We crashed. Save registers, tell tick thread and loop forever
2016	<	sigsegv_regs = *(sigregs *)r;
2016	>	build_sigregs(&sigsegv_regs, r);
2017		emul_thread_fatal = true;
2018		for (;;) ;
2019		}
#	Line 1788 | Line 2028 | rti:;
2028
2029		bool SheepMem::Init(void)
2030		{
2031	<	const int page_size = getpagesize();
2031	>	// Size of a native page
2032	>	page_size = getpagesize();
2033
2034		// Allocate SheepShaver globals
2035	<	if (vm_acquire_fixed((char *)base, size) < 0)
2035	>	proc = base;
2036	>	if (vm_mac_acquire(base, size) < 0)
2037		return false;
2038
2039	<	// Allocate page with all bits set to 0
2040	<	zero_page = base + size;
2041	<	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
2042	<	return false;
2043	<	memset((char *)zero_page, 0, page_size);
1802	<	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
2039	>	// Allocate page with all bits set to 0, right in the middle
2040	>	// This is also used to catch undesired overlaps between proc and data areas
2041	>	zero_page = proc + (size / 2);
2042	>	Mac_memset(zero_page, 0, page_size);
2043	>	if (vm_protect(Mac2HostAddr(zero_page), page_size, VM_PAGE_READ) < 0)
2044		return false;
2045
2046		#if EMULATED_PPC
2047		// Allocate alternate stack for PowerPC interrupt routine
2048	<	sig_stack = zero_page + page_size;
2049	<	if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0)
2048	>	sig_stack = base + size;
2049	>	if (vm_mac_acquire(sig_stack, SIG_STACK_SIZE) < 0)
2050		return false;
2051		#endif
2052
2053	<	top = base + size;
2053	>	data = base + size;
2054		return true;
2055		}
2056
2057		void SheepMem::Exit(void)
2058		{
2059	<	if (top) {
1819	<	const int page_size = getpagesize();
1820	<
2059	>	if (data) {
2060		// Delete SheepShaver globals
2061	<	vm_release((void *)base, size);
1823	<
1824	<	// Delete zero page
1825	<	vm_release((void *)zero_page, page_size);
2061	>	vm_mac_release(base, size);
2062
2063		#if EMULATED_PPC
2064		// Delete alternate stack for PowerPC interrupt routine
2065	<	vm_release((void *)sig_stack, SIG_STACK_SIZE);
2065	>	vm_mac_release(sig_stack, SIG_STACK_SIZE);
2066		#endif
2067		}
2068		}
#	Line 1881 | Line 2117 | void display_alert(int title_id, int pre
2117
2118		void ErrorAlert(const char *text)
2119		{
2120	<	#ifdef ENABLE_GTK
2120	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2121		if (PrefsFindBool("nogui") || x_display == NULL) {
2122		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2123		return;
#	Line 1900 | Line 2136 | void ErrorAlert(const char *text)
2136
2137		void WarningAlert(const char *text)
2138		{
2139	<	#ifdef ENABLE_GTK
2139	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2140		if (PrefsFindBool("nogui") || x_display == NULL) {
2141		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2142		return;

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