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

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.58 by gbeauche, 2005-01-30T21:48:20Z vs.
Revision 1.98 by asvitkine, 2011-12-30T17:38:39Z

#	Line 1 | Line 1
1		/*
2		*  main_unix.cpp - Emulation core, Unix implementation
3		*
4	<	*  SheepShaver (C) 1997-2005 Christian Bauer and Marc Hellwig
4	>	*  SheepShaver (C) 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.
74	<	*
75	<	*  FIXME:
76	<	*  The current solution is to allocate another signal stack when
77	<	*  processing ppc_interrupt(). However, it may be better to detect
78	<	*  the INTFLAG_ADB case and handle it specifically with some extra mutex?
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!)
#	Line 92 | Line 89
89		#include <sys/mman.h>
90		#include <sys/ipc.h>
91		#include <sys/shm.h>
92	+	#include <sys/stat.h>
93		#include <signal.h>
94
95		#include "sysdeps.h"
#	Line 112 | Line 110
110		#include "user_strings.h"
111		#include "vm_alloc.h"
112		#include "sigsegv.h"
113	+	#include "sigregs.h"
114	+	#include "rpc.h"
115
116		#define DEBUG 0
117		#include "debug.h"
#	Line 136 | Line 136
136		#ifdef ENABLE_XF86_DGA
137		#include <X11/Xlib.h>
138		#include <X11/Xutil.h>
139	<	#include <X11/extensions/xf86dga.h>
139	>	#include <X11/extensions/Xxf86dga.h>
140		#endif
141
142		#ifdef ENABLE_MON
#	Line 156 | Line 156
156		// Interrupts in native mode?
157		#define INTERRUPTS_IN_NATIVE_MODE 1
158
159	–	// Number of alternate stacks for signal handlers?
160	–	#define SIG_STACK_COUNT 4
161	–
159
160		// Constants
161		const char ROM_FILE_NAME[] = "ROM";
162		const char ROM_FILE_NAME2[] = "Mac OS ROM";
163
164	<	#if REAL_ADDRESSING
168	<	const uintptr RAM_BASE = 0x20000000;            // Base address of RAM
169	<	#else
164	>	#if !REAL_ADDRESSING
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	<
176	<	#if !EMULATED_PPC
177	<	struct sigregs {
178	<	uint32 nip;
179	<	uint32 link;
180	<	uint32 ctr;
181	<	uint32 msr;
182	<	uint32 xer;
183	<	uint32 ccr;
184	<	uint32 gpr[32];
185	<	};
186	<
187	<	#if defined(__linux__)
188	<	#include <sys/ucontext.h>
189	<	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext.regs))
190	<
191	<	struct machine_regs : public pt_regs
192	<	{
193	<	u_long & cr()                           { return pt_regs::ccr; }
194	<	uint32 cr() const                       { return pt_regs::ccr; }
195	<	uint32 lr() const                       { return pt_regs::link; }
196	<	uint32 ctr() const                      { return pt_regs::ctr; }
197	<	uint32 xer() const                      { return pt_regs::xer; }
198	<	uint32 msr() const                      { return pt_regs::msr; }
199	<	uint32 dar() const                      { return pt_regs::dar; }
200	<	u_long & pc()                           { return pt_regs::nip; }
201	<	uint32 pc() const                       { return pt_regs::nip; }
202	<	u_long & gpr(int i)                     { return pt_regs::gpr[i]; }
203	<	uint32 gpr(int i) const         { return pt_regs::gpr[i]; }
204	<	};
205	<	#endif
206	<
207	<	#if defined(__APPLE__) && defined(__MACH__)
208	<	#include <sys/signal.h>
209	<	extern "C" int sigaltstack(const struct sigaltstack *ss, struct sigaltstack *oss);
210	<
211	<	#include <sys/ucontext.h>
212	<	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext))
213	<
214	<	struct machine_regs : public mcontext
215	<	{
216	<	uint32 & cr()                           { return ss.cr; }
217	<	uint32 cr() const                       { return ss.cr; }
218	<	uint32 lr() const                       { return ss.lr; }
219	<	uint32 ctr() const                      { return ss.ctr; }
220	<	uint32 xer() const                      { return ss.xer; }
221	<	uint32 msr() const                      { return ss.srr1; }
222	<	uint32 dar() const                      { return es.dar; }
223	<	uint32 & pc()                           { return ss.srr0; }
224	<	uint32 pc() const                       { return ss.srr0; }
225	<	uint32 & gpr(int i)                     { return (&ss.r0)[i]; }
226	<	uint32 gpr(int i) const         { return (&ss.r0)[i]; }
227	<	};
228	<	#endif
229	<
230	<	static void build_sigregs(sigregs *srp, machine_regs *mrp)
231	<	{
232	<	srp->nip = mrp->pc();
233	<	srp->link = mrp->lr();
234	<	srp->ctr = mrp->ctr();
235	<	srp->msr = mrp->msr();
236	<	srp->xer = mrp->xer();
237	<	srp->ccr = mrp->cr();
238	<	for (int i = 0; i < 32; i++)
239	<	srp->gpr[i] = mrp->gpr(i);
240	<	}
241	<
242	<	static struct sigaltstack sig_stacks[SIG_STACK_COUNT];  // Stacks for signal handlers
243	<	static int sig_stack_id = 0;                                                    // Stack slot currently used
244	<
245	<	static inline void sig_stack_acquire(void)
246	<	{
247	<	if (++sig_stack_id == SIG_STACK_COUNT) {
248	<	printf("FATAL: signal stack overflow\n");
249	<	return;
250	<	}
251	<	sigaltstack(&sig_stacks[sig_stack_id], NULL);
252	<	}
253	<
254	<	static inline void sig_stack_release(void)
255	<	{
256	<	if (--sig_stack_id < 0) {
257	<	printf("FATAL: signal stack underflow\n");
258	<	return;
259	<	}
260	<	sigaltstack(&sig_stacks[sig_stack_id], NULL);
261	<	}
168	>	const uintptr ROM_BASE = 0x40800000;            // Base address of ROM
169	>	#if REAL_ADDRESSING
170	>	const uint32 ROM_ALIGNMENT = 0x100000;          // ROM must be aligned to a 1MB boundary
171		#endif
172	+	const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
173
174
175		// Global variables (exported)
176		#if !EMULATED_PPC
177	<	void *TOC;                              // Small data pointer (r13)
177	>	void *TOC = NULL;               // Pointer to Thread Local Storage (r2)
178	>	void *R13 = NULL;               // Pointer to .sdata section (r13 under Linux)
179		#endif
180		uint32 RAMBase;                 // Base address of Mac RAM
181		uint32 RAMSize;                 // Size of Mac RAM
182	+	uint32 ROMBase;                 // Base address of Mac ROM
183		uint32 KernelDataAddr;  // Address of Kernel Data
184		uint32 BootGlobsAddr;   // Address of BootGlobs structure at top of Mac RAM
185		uint32 DRCacheAddr;             // Address of DR Cache
#	Line 317 | Line 229 | static uintptr sig_stack = 0;                          // Stac
229		#else
230		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
231		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
232	+	static stack_t sig_stack;                                       // Stack for signal handlers
233	+	static stack_t extra_stack;                                     // Stack for SIGSEGV inside interrupt handler
234		static bool emul_thread_fatal = false;          // Flag: MacOS thread crashed, tick thread shall dump debug output
235		static sigregs sigsegv_regs;                            // Register dump when crashed
236		static const char *crash_reason = NULL;         // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
237		#endif
238
239	+	static rpc_connection_t *gui_connection = NULL; // RPC connection to the GUI
240	+	static const char *gui_connection_path = NULL;  // GUI connection identifier
241	+
242		uint32  SheepMem::page_size;                            // Size of a native page
243		uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
244		uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
#	Line 340 | Line 257 | static void *tick_func(void *arg);
257		extern void emul_ppc(uint32 start);
258		extern void init_emul_ppc(void);
259		extern void exit_emul_ppc(void);
260	<	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
260	>	sigsegv_return_t sigsegv_handler(sigsegv_info_t *sip);
261		#else
262	<	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
262	>	extern "C" void sigusr2_handler_init(int sig, siginfo_t *sip, void *scp);
263	>	extern "C" void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
264		static void sigsegv_handler(int sig, siginfo_t *sip, void *scp);
265		static void sigill_handler(int sig, siginfo_t *sip, void *scp);
266		#endif
#	Line 350 | Line 268 | static void sigill_handler(int sig, sigi
268
269		// From asm_linux.S
270		#if !EMULATED_PPC
353	–	extern "C" void *get_toc(void);
271		extern "C" void *get_sp(void);
272	+	extern "C" void *get_r2(void);
273	+	extern "C" void set_r2(void *);
274	+	extern "C" void *get_r13(void);
275	+	extern "C" void set_r13(void *);
276		extern "C" void flush_icache_range(uint32 start, uint32 end);
277		extern "C" void jump_to_rom(uint32 entry, uint32 context);
278		extern "C" void quit_emulator(void);
#	Line 419 | Line 340 | int atomic_or(int *var, int v)
340		*  Memory management helpers
341		*/
342
343	<	static inline int vm_mac_acquire(uint32 addr, uint32 size)
343	>	static inline uint8 *vm_mac_acquire(uint32 size)
344	>	{
345	>	return (uint8 *)vm_acquire(size);
346	>	}
347	>
348	>	static inline int vm_mac_acquire_fixed(uint32 addr, uint32 size)
349		{
350		return vm_acquire_fixed(Mac2HostAddr(addr), size);
351		}
#	Line 443 | Line 369 | static void usage(const char *prg_name)
369		exit(0);
370		}
371
372	<	int main(int argc, char **argv)
372	>	static bool valid_vmdir(const char *path)
373		{
374	<	char str[256];
375	<	int rom_fd;
376	<	FILE *proc_file;
377	<	const char *rom_path;
378	<	uint32 rom_size, actual;
379	<	uint8 *rom_tmp;
380	<	time_t now, expire;
381	<
456	<	// Initialize variables
457	<	RAMBase = 0;
458	<	tzset();
459	<
460	<	// Print some info
461	<	printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR);
462	<	printf(" %s\n", GetString(STR_ABOUT_TEXT2));
463	<
464	<	#if !EMULATED_PPC
465	<	// Get TOC pointer
466	<	TOC = get_toc();
467	<	#endif
468	<
469	<	#ifdef ENABLE_GTK
470	<	// Init GTK
471	<	gtk_set_locale();
472	<	gtk_init(&argc, &argv);
473	<	#endif
474	<
475	<	// Read preferences
476	<	PrefsInit(argc, argv);
477	<
478	<	// Parse command line arguments
479	<	for (int i=1; i<argc; i++) {
480	<	if (strcmp(argv[i], "--help") == 0) {
481	<	usage(argv[0]);
482	<	#ifndef USE_SDL_VIDEO
483	<	} else if (strcmp(argv[i], "--display") == 0) {
484	<	i++;
485	<	if (i < argc)
486	<	x_display_name = strdup(argv[i]);
487	<	#endif
488	<	} else if (argv[i][0] == '-') {
489	<	fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
490	<	usage(argv[0]);
491	<	}
492	<	}
493	<
494	<	#ifdef USE_SDL
495	<	// Initialize SDL system
496	<	int sdl_flags = 0;
497	<	#ifdef USE_SDL_VIDEO
498	<	sdl_flags |= SDL_INIT_VIDEO;
499	<	#endif
500	<	#ifdef USE_SDL_AUDIO
501	<	sdl_flags |= SDL_INIT_AUDIO;
502	<	#endif
503	<	assert(sdl_flags != 0);
504	<	if (SDL_Init(sdl_flags) == -1) {
505	<	char str[256];
506	<	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
507	<	ErrorAlert(str);
508	<	goto quit;
509	<	}
510	<	atexit(SDL_Quit);
511	<	#endif
512	<
513	<	#ifndef USE_SDL_VIDEO
514	<	// Open display
515	<	x_display = XOpenDisplay(x_display_name);
516	<	if (x_display == NULL) {
517	<	char str[256];
518	<	sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name));
519	<	ErrorAlert(str);
520	<	goto quit;
521	<	}
522	<
523	<	#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON)
524	<	// Fork out, so we can return from fullscreen mode when things get ugly
525	<	XF86DGAForkApp(DefaultScreen(x_display));
526	<	#endif
527	<	#endif
528	<
529	<	#ifdef ENABLE_MON
530	<	// Initialize mon
531	<	mon_init();
532	<	#endif
533	<
534	<	#if !EMULATED_PPC
535	<	// Create and install stacks for signal handlers
536	<	for (int i = 0; i < SIG_STACK_COUNT; i++) {
537	<	void *sig_stack = malloc(SIG_STACK_SIZE);
538	<	D(bug("Signal stack %d at %p\n", i, sig_stack));
539	<	if (sig_stack == NULL) {
540	<	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
541	<	goto quit;
374	>	const int suffix_len = sizeof(".sheepvm") - 1;
375	>	int len = strlen(path);
376	>	if (len && path[len - 1] == '/') // to support both ".sheepvm" and ".sheepvm/"
377	>	len--;
378	>	if (len > suffix_len && !strncmp(path + len - suffix_len, ".sheepvm", suffix_len)) {
379	>	struct stat d;
380	>	if (!stat(path, &d) && S_ISDIR(d.st_mode)) {
381	>	return true;
382		}
543	–	sig_stacks[i].ss_sp = sig_stack;
544	–	sig_stacks[i].ss_flags = 0;
545	–	sig_stacks[i].ss_size = SIG_STACK_SIZE;
546	–	}
547	–	sig_stack_id = 0;
548	–	if (sigaltstack(&sig_stacks[0], NULL) < 0) {
549	–	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
550	–	ErrorAlert(str);
551	–	goto quit;
383		}
384	<	#endif
384	>	return false;
385	>	}
386
387	+	static void get_system_info(void)
388	+	{
389		#if !EMULATED_PPC
390	<	// Install SIGSEGV and SIGBUS handlers
557	<	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
558	<	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
559	<	sigsegv_action.sa_sigaction = sigsegv_handler;
560	<	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
561	<	#ifdef HAVE_SIGNAL_SA_RESTORER
562	<	sigsegv_action.sa_restorer = NULL;
563	<	#endif
564	<	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
565	<	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
566	<	ErrorAlert(str);
567	<	goto quit;
568	<	}
569	<	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
570	<	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
571	<	ErrorAlert(str);
572	<	goto quit;
573	<	}
574	<	#else
575	<	// Install SIGSEGV handler for CPU emulator
576	<	if (!sigsegv_install_handler(sigsegv_handler)) {
577	<	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
578	<	ErrorAlert(str);
579	<	goto quit;
580	<	}
390	>	FILE *proc_file;
391		#endif
392
583	–	// Initialize VM system
584	–	vm_init();
585	–
586	–	// Get system info
393		PVR = 0x00040000;                       // Default: 604
394		CPUClockSpeed = 100000000;      // Default: 100MHz
395		BusClockSpeed = 100000000;      // Default: 100MHz
396		TimebaseSpeed =  25000000;      // Default:  25MHz
397	+
398		#if EMULATED_PPC
399		PVR = 0x000c0000;                       // Default: 7400 (with AltiVec)
400		#elif defined(__APPLE__) && defined(__MACH__)
#	Line 622 | Line 429 | int main(int argc, char **argv)
429		}
430		fclose(proc_file);
431		} else {
432	+	char str[256];
433		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
434		WarningAlert(str);
435		}
#	Line 666 | Line 474 | int main(int argc, char **argv)
474		{ 0xffff0000, 0x80010000, "7455" },
475		{ 0xffff0000, 0x80020000, "7457" },
476		{ 0xffff0000, 0x80030000, "7447A" },
477	+	{ 0xffff0000, 0x80040000, "7448" },
478		{ 0x7fff0000, 0x00810000, "82xx" },
479		{ 0x7fff0000, 0x00820000, "8280" },
480		{ 0xffff0000, 0x00400000, "Power3 (630)" },
#	Line 674 | Line 483 | int main(int argc, char **argv)
483		{ 0xffff0000, 0x00370000, "S-star" },
484		{ 0xffff0000, 0x00350000, "Power4" },
485		{ 0xffff0000, 0x00390000, "PPC970" },
486	+	{ 0xffff0000, 0x003c0000, "PPC970FX" },
487	+	{ 0xffff0000, 0x00440000, "PPC970MP" },
488	+	{ 0xffff0000, 0x003a0000, "POWER5 (gr)" },
489	+	{ 0xffff0000, 0x003b0000, "POWER5+ (gs)" },
490	+	{ 0xffff0000, 0x003e0000, "POWER6" },
491	+	{ 0xffff0000, 0x00700000, "Cell Broadband Engine" },
492	+	{ 0x7fff0000, 0x00900000, "PA6T" },
493		{ 0, 0, 0 }
494		};
495
#	Line 687 | Line 503 | int main(int argc, char **argv)
503
504		// Parse line
505		int i;
506	+	float f;
507		char value[256];
508	<	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
508	>	if (sscanf(line, "cpu : %[^,]", value) == 1) {
509		// Search by name
510		const char *cpu_name = NULL;
511		for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
#	Line 703 | Line 520 | int main(int argc, char **argv)
520		else
521		printf("Found a PowerPC %s processor\n", cpu_name);
522		}
523	<	if (sscanf(line, "clock : %dMHz", &i) == 1)
523	>	if (sscanf(line, "clock : %fMHz", &f) == 1)
524	>	CPUClockSpeed = BusClockSpeed = ((int64)f) * 1000000;
525	>	else if (sscanf(line, "clock : %dMHz", &i) == 1)
526		CPUClockSpeed = BusClockSpeed = i * 1000000;
527		}
528		fclose(proc_file);
#	Line 742 | Line 561 | int main(int argc, char **argv)
561		closedir(cpus_dir);
562		}
563		#endif
564	+
565		// Remap any newer G4/G5 processor to plain G4 for compatibility
566		switch (PVR >> 16) {
567		case 0x8000:                            // 7450
568		case 0x8001:                            // 7455
569		case 0x8002:                            // 7457
570	+	case 0x8003:                            // 7447A
571	+	case 0x8004:                            // 7448
572		case 0x0039:                            //  970
573	+	case 0x003c:                            //  970FX
574	+	case 0x0044:                            //  970MP
575		PVR = 0x000c0000;               // 7400
576		break;
577		}
578		D(bug("PVR: %08x (assumed)\n", PVR));
579	+	}
580	+
581	+	static bool load_mac_rom(void)
582	+	{
583	+	uint32 rom_size, actual;
584	+	uint8 *rom_tmp;
585	+	const char *rom_path = PrefsFindString("rom");
586	+	int rom_fd = open(rom_path && *rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
587	+	if (rom_fd < 0) {
588	+	rom_fd = open(ROM_FILE_NAME2, O_RDONLY);
589	+	if (rom_fd < 0) {
590	+	ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
591	+	return false;
592	+	}
593	+	}
594	+	printf("%s", GetString(STR_READING_ROM_FILE));
595	+	rom_size = lseek(rom_fd, 0, SEEK_END);
596	+	lseek(rom_fd, 0, SEEK_SET);
597	+	rom_tmp = new uint8[ROM_SIZE];
598	+	actual = read(rom_fd, (void *)rom_tmp, ROM_SIZE);
599	+	close(rom_fd);
600	+
601	+	// Decode Mac ROM
602	+	if (!DecodeROM(rom_tmp, actual)) {
603	+	if (rom_size != 4*1024*1024) {
604	+	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
605	+	return false;
606	+	} else {
607	+	ErrorAlert(GetString(STR_ROM_FILE_READ_ERR));
608	+	return false;
609	+	}
610	+	}
611	+	delete[] rom_tmp;
612	+	return true;
613	+	}
614	+
615	+	static bool install_signal_handlers(void)
616	+	{
617	+	char str[256];
618	+	#if !EMULATED_PPC
619	+	// Create and install stacks for signal handlers
620	+	sig_stack.ss_sp = malloc(SIG_STACK_SIZE);
621	+	D(bug("Signal stack at %p\n", sig_stack.ss_sp));
622	+	if (sig_stack.ss_sp == NULL) {
623	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
624	+	return false;
625	+	}
626	+	sig_stack.ss_flags = 0;
627	+	sig_stack.ss_size = SIG_STACK_SIZE;
628	+	if (sigaltstack(&sig_stack, NULL) < 0) {
629	+	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
630	+	ErrorAlert(str);
631	+	return false;
632	+	}
633	+	extra_stack.ss_sp = malloc(SIG_STACK_SIZE);
634	+	D(bug("Extra stack at %p\n", extra_stack.ss_sp));
635	+	if (extra_stack.ss_sp == NULL) {
636	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
637	+	return false;
638	+	}
639	+	extra_stack.ss_flags = 0;
640	+	extra_stack.ss_size = SIG_STACK_SIZE;
641	+
642	+	// Install SIGSEGV and SIGBUS handlers
643	+	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
644	+	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
645	+	sigsegv_action.sa_sigaction = sigsegv_handler;
646	+	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
647	+	#ifdef HAVE_SIGNAL_SA_RESTORER
648	+	sigsegv_action.sa_restorer = NULL;
649	+	#endif
650	+	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
651	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
652	+	ErrorAlert(str);
653	+	return false;
654	+	}
655	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
656	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGBUS", strerror(errno));
657	+	ErrorAlert(str);
658	+	return false;
659	+	}
660	+	#else
661	+	// Install SIGSEGV handler for CPU emulator
662	+	if (!sigsegv_install_handler(sigsegv_handler)) {
663	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
664	+	ErrorAlert(str);
665	+	return false;
666	+	}
667	+	#endif
668	+	return true;
669	+	}
670	+
671	+	static bool init_sdl()
672	+	{
673	+	int sdl_flags = 0;
674	+	#ifdef USE_SDL_VIDEO
675	+	sdl_flags |= SDL_INIT_VIDEO;
676	+	#endif
677	+	#ifdef USE_SDL_AUDIO
678	+	sdl_flags |= SDL_INIT_AUDIO;
679	+	#endif
680	+	assert(sdl_flags != 0);
681	+
682	+	#ifdef USE_SDL_VIDEO
683	+	// Don't let SDL block the screensaver
684	+	setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", TRUE);
685	+
686	+	// Make SDL pass through command-clicks and option-clicks unaltered
687	+	setenv("SDL_HAS3BUTTONMOUSE", "1", TRUE);
688	+	#endif
689	+
690	+	if (SDL_Init(sdl_flags) == -1) {
691	+	char str[256];
692	+	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
693	+	ErrorAlert(str);
694	+	return false;
695	+	}
696	+	atexit(SDL_Quit);
697	+
698	+	// Don't let SDL catch SIGINT and SIGTERM signals
699	+	signal(SIGINT, SIG_DFL);
700	+	signal(SIGTERM, SIG_DFL);
701	+	return true;
702	+	}
703	+
704	+	int main(int argc, char **argv)
705	+	{
706	+	char str[256];
707	+	bool memory_mapped_from_zero, ram_rom_areas_contiguous;
708	+	const char *vmdir = NULL;
709	+
710	+	// Initialize variables
711	+	RAMBase = 0;
712	+	tzset();
713	+
714	+	// Print some info
715	+	printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR);
716	+	printf(" %s\n", GetString(STR_ABOUT_TEXT2));
717	+
718	+	#if !EMULATED_PPC
719	+	#ifdef SYSTEM_CLOBBERS_R2
720	+	// Get TOC pointer
721	+	TOC = get_r2();
722	+	#endif
723	+	#ifdef SYSTEM_CLOBBERS_R13
724	+	// Get r13 register
725	+	R13 = get_r13();
726	+	#endif
727	+	#endif
728	+
729	+	// Parse command line arguments
730	+	for (int i=1; i<argc; i++) {
731	+	if (strcmp(argv[i], "--help") == 0) {
732	+	usage(argv[0]);
733	+	#ifndef USE_SDL_VIDEO
734	+	} else if (strcmp(argv[i], "--display") == 0) {
735	+	i++;
736	+	if (i < argc)
737	+	x_display_name = strdup(argv[i]);
738	+	#endif
739	+	} else if (strcmp(argv[i], "--gui-connection") == 0) {
740	+	argv[i++] = NULL;
741	+	if (i < argc) {
742	+	gui_connection_path = argv[i];
743	+	argv[i] = NULL;
744	+	}
745	+	} else if (valid_vmdir(argv[i])) {
746	+	vmdir = argv[i];
747	+	argv[i] = NULL;
748	+	printf("Using %s as vmdir.\n", vmdir);
749	+	if (chdir(vmdir)) {
750	+	printf("Failed to chdir to %s. Good bye.", vmdir);
751	+	exit(1);
752	+	}
753	+	break;
754	+	}
755	+	}
756	+
757	+	// Remove processed arguments
758	+	for (int i=1; i<argc; i++) {
759	+	int k;
760	+	for (k=i; k<argc; k++)
761	+	if (argv[k] != NULL)
762	+	break;
763	+	if (k > i) {
764	+	k -= i;
765	+	for (int j=i+k; j<argc; j++)
766	+	argv[j-k] = argv[j];
767	+	argc -= k;
768	+	}
769	+	}
770	+
771	+	// Connect to the external GUI
772	+	if (gui_connection_path) {
773	+	if ((gui_connection = rpc_init_client(gui_connection_path)) == NULL) {
774	+	fprintf(stderr, "Failed to initialize RPC client connection to the GUI\n");
775	+	return 1;
776	+	}
777	+	}
778	+
779	+	#ifdef ENABLE_GTK
780	+	if (!gui_connection) {
781	+	// Init GTK
782	+	gtk_set_locale();
783	+	gtk_init(&argc, &argv);
784	+	}
785	+	#endif
786	+
787	+	// Read preferences
788	+	PrefsInit(vmdir, argc, argv);
789	+
790	+	// Any command line arguments left?
791	+	for (int i=1; i<argc; i++) {
792	+	if (argv[i][0] == '-') {
793	+	fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
794	+	usage(argv[0]);
795	+	}
796	+	}
797	+
798	+	#ifdef USE_SDL
799	+	// Initialize SDL system
800	+	if (!init_sdl())
801	+	goto quit;
802	+	#endif
803	+
804	+	#ifndef USE_SDL_VIDEO
805	+	// Open display
806	+	x_display = XOpenDisplay(x_display_name);
807	+	if (x_display == NULL) {
808	+	char str[256];
809	+	sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name));
810	+	ErrorAlert(str);
811	+	goto quit;
812	+	}
813	+
814	+	#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON)
815	+	// Fork out, so we can return from fullscreen mode when things get ugly
816	+	XF86DGAForkApp(DefaultScreen(x_display));
817	+	#endif
818	+	#endif
819	+
820	+	#ifdef ENABLE_MON
821	+	// Initialize mon
822	+	mon_init();
823	+	#endif
824	+
825	+	// Install signal handlers
826	+	if (!install_signal_handlers())
827	+	goto quit;
828	+
829	+	// Initialize VM system
830	+	vm_init();
831	+
832	+	// Get system info
833	+	get_system_info();
834
835		// Init system routines
836		SysInit();
#	Line 774 | Line 853 | int main(int argc, char **argv)
853		goto quit;
854		}
855
777	–	#ifndef PAGEZERO_HACK
778	–	// Create Low Memory area (0x0000..0x3000)
779	–	if (vm_mac_acquire(0, 0x3000) < 0) {
780	–	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
781	–	ErrorAlert(str);
782	–	goto quit;
783	–	}
784	–	lm_area_mapped = true;
785	–	#endif
786	–
856		// Create areas for Kernel Data
857		if (!kernel_data_init())
858		goto quit;
#	Line 794 | Line 863 | int main(int argc, char **argv)
863		D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
864
865		// Create area for DR Cache
866	<	if (vm_mac_acquire(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
866	>	if (vm_mac_acquire_fixed(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
867		sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
868		ErrorAlert(str);
869		goto quit;
870		}
871		dr_emulator_area_mapped = true;
872	<	if (vm_mac_acquire(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
872	>	if (vm_mac_acquire_fixed(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
873		sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
874		ErrorAlert(str);
875		goto quit;
#	Line 822 | Line 891 | int main(int argc, char **argv)
891		ErrorAlert(str);
892		goto quit;
893		}
894	<
826	<	// Create area for Mac ROM
827	<	if (vm_mac_acquire(ROM_BASE, ROM_AREA_SIZE) < 0) {
828	<	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
829	<	ErrorAlert(str);
830	<	goto quit;
831	<	}
832	<	ROMBaseHost = Mac2HostAddr(ROM_BASE);
833	<	#if !EMULATED_PPC
834	<	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
835	<	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
836	<	ErrorAlert(str);
837	<	goto quit;
838	<	}
839	<	#endif
840	<	rom_area_mapped = true;
841	<	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROM_BASE));
842	<
894	>
895		// Create area for Mac RAM
896		RAMSize = PrefsFindInt32("ramsize");
897		if (RAMSize < 8*1024*1024) {
898		WarningAlert(GetString(STR_SMALL_RAM_WARN));
899		RAMSize = 8*1024*1024;
900		}
901	<
902	<	if (vm_mac_acquire(RAM_BASE, RAMSize) < 0) {
903	<	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
904	<	ErrorAlert(str);
905	<	goto quit;
901	>	memory_mapped_from_zero = false;
902	>	ram_rom_areas_contiguous = false;
903	>	#if REAL_ADDRESSING && HAVE_LINKER_SCRIPT
904	>	if (vm_mac_acquire_fixed(0, RAMSize) == 0) {
905	>	D(bug("Could allocate RAM from 0x0000\n"));
906	>	RAMBase = 0;
907	>	RAMBaseHost = Mac2HostAddr(RAMBase);
908	>	memory_mapped_from_zero = true;
909	>	}
910	>	#endif
911	>	if (!memory_mapped_from_zero) {
912	>	#ifndef PAGEZERO_HACK
913	>	// Create Low Memory area (0x0000..0x3000)
914	>	if (vm_mac_acquire_fixed(0, 0x3000) < 0) {
915	>	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
916	>	ErrorAlert(str);
917	>	goto quit;
918	>	}
919	>	lm_area_mapped = true;
920	>	#endif
921	>	#if REAL_ADDRESSING
922	>	// Allocate RAM at any address. Since ROM must be higher than RAM, allocate the RAM
923	>	// and ROM areas contiguously, plus a little extra to allow for ROM address alignment.
924	>	RAMBaseHost = vm_mac_acquire(RAMSize + ROM_AREA_SIZE + ROM_ALIGNMENT);
925	>	if (RAMBaseHost == VM_MAP_FAILED) {
926	>	sprintf(str, GetString(STR_RAM_ROM_MMAP_ERR), strerror(errno));
927	>	ErrorAlert(str);
928	>	goto quit;
929	>	}
930	>	RAMBase = Host2MacAddr(RAMBaseHost);
931	>	ROMBase = (RAMBase + RAMSize + ROM_ALIGNMENT -1) & -ROM_ALIGNMENT;
932	>	ROMBaseHost = Mac2HostAddr(ROMBase);
933	>	ram_rom_areas_contiguous = true;
934	>	#else
935	>	if (vm_mac_acquire_fixed(RAM_BASE, RAMSize) < 0) {
936	>	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
937	>	ErrorAlert(str);
938	>	goto quit;
939	>	}
940	>	RAMBase = RAM_BASE;
941	>	RAMBaseHost = Mac2HostAddr(RAMBase);
942	>	#endif
943		}
855	–	RAMBaseHost = Mac2HostAddr(RAM_BASE);
944		#if !EMULATED_PPC
945		if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
946		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
#	Line 860 | Line 948 | int main(int argc, char **argv)
948		goto quit;
949		}
950		#endif
863	–	RAMBase = RAM_BASE;
951		ram_area_mapped = true;
952		D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
953
954	<	if (RAMBase > ROM_BASE) {
955	<	ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
954	>	if (RAMBase > KernelDataAddr) {
955	>	ErrorAlert(GetString(STR_RAM_AREA_TOO_HIGH_ERR));
956		goto quit;
957		}
871	–
872	–	// Load Mac ROM
873	–	rom_path = PrefsFindString("rom");
874	–	rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
875	–	if (rom_fd < 0) {
876	–	rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME2, O_RDONLY);
877	–	if (rom_fd < 0) {
878	–	ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
879	–	goto quit;
880	–	}
881	–	}
882	–	printf(GetString(STR_READING_ROM_FILE));
883	–	rom_size = lseek(rom_fd, 0, SEEK_END);
884	–	lseek(rom_fd, 0, SEEK_SET);
885	–	rom_tmp = new uint8[ROM_SIZE];
886	–	actual = read(rom_fd, (void *)rom_tmp, ROM_SIZE);
887	–	close(rom_fd);
958
959	<	// Decode Mac ROM
960	<	if (!DecodeROM(rom_tmp, actual)) {
961	<	if (rom_size != 4*1024*1024) {
962	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
963	<	goto quit;
894	<	} else {
895	<	ErrorAlert(GetString(STR_ROM_FILE_READ_ERR));
959	>	// Create area for Mac ROM
960	>	if (!ram_rom_areas_contiguous) {
961	>	if (vm_mac_acquire_fixed(ROM_BASE, ROM_AREA_SIZE) < 0) {
962	>	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
963	>	ErrorAlert(str);
964		goto quit;
965		}
966	+	ROMBase = ROM_BASE;
967	+	ROMBaseHost = Mac2HostAddr(ROMBase);
968	+	}
969	+	#if !EMULATED_PPC
970	+	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
971	+	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
972	+	ErrorAlert(str);
973	+	goto quit;
974	+	}
975	+	#endif
976	+	rom_area_mapped = true;
977	+	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROMBase));
978	+
979	+	if (RAMBase > ROMBase) {
980	+	ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
981	+	goto quit;
982		}
983	<	delete[] rom_tmp;
983	>
984	>	// Load Mac ROM
985	>	if (!load_mac_rom())
986	>	goto quit;
987
988		// Initialize everything
989	<	if (!InitAll())
989	>	if (!InitAll(vmdir))
990		goto quit;
991		D(bug("Initialization complete\n"));
992
993		// Clear caches (as we loaded and patched code) and write protect ROM
994		#if !EMULATED_PPC
995	<	flush_icache_range(ROM_BASE, ROM_BASE + ROM_AREA_SIZE);
995	>	flush_icache_range(ROMBase, ROMBase + ROM_AREA_SIZE);
996		#endif
997		vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
998
#	Line 930 | Line 1017 | int main(int argc, char **argv)
1017		sigill_action.sa_restorer = NULL;
1018		#endif
1019		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
1020	<	sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
1020	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
1021		ErrorAlert(str);
1022		goto quit;
1023		}
#	Line 939 | Line 1026 | int main(int argc, char **argv)
1026		#if !EMULATED_PPC
1027		// Install interrupt signal handler
1028		sigemptyset(&sigusr2_action.sa_mask);
1029	<	sigusr2_action.sa_sigaction = sigusr2_handler;
1029	>	sigusr2_action.sa_sigaction = sigusr2_handler_init;
1030		sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
1031		#ifdef HAVE_SIGNAL_SA_RESTORER
1032		sigusr2_action.sa_restorer = NULL;
1033		#endif
1034		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
1035	<	sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
1035	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGUSR2", strerror(errno));
1036		ErrorAlert(str);
1037		goto quit;
1038		}
#	Line 1002 | Line 1089 | static void Quit(void)
1089		sigaction(SIGILL, &sigill_action, NULL);
1090
1091		// Delete stacks for signal handlers
1092	<	for (int i = 0; i < SIG_STACK_COUNT; i++) {
1093	<	void *sig_stack = sig_stacks[i].ss_sp;
1094	<	if (sig_stack)
1095	<	free(sig_stack);
1009	<	}
1092	>	if (sig_stack.ss_sp)
1093	>	free(sig_stack.ss_sp);
1094	>	if (extra_stack.ss_sp)
1095	>	free(extra_stack.ss_sp);
1096		#endif
1097
1098		// Deinitialize everything
#	Line 1017 | Line 1103 | static void Quit(void)
1103
1104		// Delete RAM area
1105		if (ram_area_mapped)
1106	<	vm_mac_release(RAM_BASE, RAMSize);
1106	>	vm_mac_release(RAMBase, RAMSize);
1107
1108		// Delete ROM area
1109		if (rom_area_mapped)
1110	<	vm_mac_release(ROM_BASE, ROM_AREA_SIZE);
1110	>	vm_mac_release(ROMBase, ROM_AREA_SIZE);
1111
1112		// Delete DR cache areas
1113		if (dr_emulator_area_mapped)
#	Line 1057 | Line 1143 | static void Quit(void)
1143		XCloseDisplay(x_display);
1144		#endif
1145
1146	+	// Notify GUI we are about to leave
1147	+	if (gui_connection) {
1148	+	if (rpc_method_invoke(gui_connection, RPC_METHOD_EXIT, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
1149	+	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID);
1150	+	}
1151	+
1152		exit(0);
1153		}
1154
#	Line 1065 | Line 1157 | static void Quit(void)
1157		*  Initialize Kernel Data segments
1158		*/
1159
1068	–	#if defined(__CYGWIN__)
1069	–	#define WIN32_LEAN_AND_MEAN
1070	–	#include <windows.h>
1071	–
1072	–	static HANDLE kernel_handle;                            // Shared memory handle for Kernel Data
1073	–	static DWORD allocation_granule;                        // Minimum size of allocateable are (64K)
1074	–	static DWORD kernel_area_size;                          // Size of Kernel Data area
1075	–	#endif
1076	–
1160		static bool kernel_data_init(void)
1161		{
1162		char str[256];
1163	<	#ifdef _WIN32
1164	<	SYSTEM_INFO si;
1165	<	GetSystemInfo(&si);
1083	<	allocation_granule = si.dwAllocationGranularity;
1084	<	kernel_area_size = (KERNEL_AREA_SIZE + allocation_granule - 1) & -allocation_granule;
1085	<
1086	<	char rcs[10];
1087	<	LPVOID kernel_addr;
1088	<	kernel_handle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, kernel_area_size, NULL);
1089	<	if (kernel_handle == NULL) {
1090	<	sprintf(rcs, "%d", GetLastError());
1091	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), rcs);
1092	<	ErrorAlert(str);
1093	<	return false;
1094	<	}
1095	<	kernel_addr = (LPVOID)Mac2HostAddr(KERNEL_DATA_BASE & -allocation_granule);
1096	<	if (MapViewOfFileEx(kernel_handle, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, kernel_area_size, kernel_addr) != kernel_addr) {
1097	<	sprintf(rcs, "%d", GetLastError());
1098	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), rcs);
1099	<	ErrorAlert(str);
1100	<	return false;
1101	<	}
1102	<	kernel_addr = (LPVOID)Mac2HostAddr(KERNEL_DATA2_BASE & -allocation_granule);
1103	<	if (MapViewOfFileEx(kernel_handle, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, kernel_area_size, kernel_addr) != kernel_addr) {
1104	<	sprintf(rcs, "%d", GetLastError());
1105	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), rcs);
1106	<	ErrorAlert(str);
1107	<	return false;
1108	<	}
1109	<	#else
1110	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
1163	>	uint32 kernel_area_size = (KERNEL_AREA_SIZE + SHMLBA - 1) & -SHMLBA;
1164	>
1165	>	kernel_area = shmget(IPC_PRIVATE, kernel_area_size, 0600);
1166		if (kernel_area == -1) {
1167		sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1168		ErrorAlert(str);
1169		return false;
1170		}
1171	<	if (shmat(kernel_area, Mac2HostAddr(KERNEL_DATA_BASE), 0) < 0) {
1171	>	void *kernel_addr = Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA);
1172	>	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1173		sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1174		ErrorAlert(str);
1175		return false;
1176		}
1177	<	if (shmat(kernel_area, Mac2HostAddr(KERNEL_DATA2_BASE), 0) < 0) {
1177	>	kernel_addr = Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA);
1178	>	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1179		sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1180		ErrorAlert(str);
1181		return false;
1182		}
1126	–	#endif
1183		return true;
1184		}
1185
#	Line 1134 | Line 1190 | static bool kernel_data_init(void)
1190
1191		static void kernel_data_exit(void)
1192		{
1137	–	#ifdef _WIN32
1138	–	if (kernel_handle) {
1139	–	UnmapViewOfFile(Mac2HostAddr(KERNEL_DATA_BASE & -allocation_granule));
1140	–	UnmapViewOfFile(Mac2HostAddr(KERNEL_DATA2_BASE & -allocation_granule));
1141	–	CloseHandle(kernel_handle);
1142	–	}
1143	–	#else
1193		if (kernel_area >= 0) {
1194	<	shmdt(Mac2HostAddr(KERNEL_DATA_BASE));
1195	<	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE));
1194	>	shmdt(Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA));
1195	>	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA));
1196		shmctl(kernel_area, IPC_RMID, NULL);
1197		}
1149	–	#endif
1198		}
1199
1200
#	Line 1178 | Line 1226 | static void *emul_func(void *arg)
1226		// Jump to ROM boot routine
1227		D(bug("Jumping to ROM\n"));
1228		#if EMULATED_PPC
1229	<	jump_to_rom(ROM_BASE + 0x310000);
1229	>	jump_to_rom(ROMBase + 0x310000);
1230		#else
1231	<	jump_to_rom(ROM_BASE + 0x310000, (uint32)emulator_data);
1231	>	jump_to_rom(ROMBase + 0x310000, (uint32)emulator_data);
1232		#endif
1233		D(bug("Returned from ROM\n"));
1234
#	Line 1237 | Line 1285 | void QuitEmulator(void)
1285
1286
1287		/*
1240	–	*  Pause/resume emulator
1241	–	*/
1242	–
1243	–	void PauseEmulator(void)
1244	–	{
1245	–	pthread_kill(emul_thread, SIGSTOP);
1246	–	}
1247	–
1248	–	void ResumeEmulator(void)
1249	–	{
1250	–	pthread_kill(emul_thread, SIGCONT);
1251	–	}
1252	–
1253	–
1254	–	/*
1288		*  Dump 68k registers
1289		*/
1290
#	Line 1281 | Line 1314 | void Dump68kRegs(M68kRegisters *r)
1314
1315		void MakeExecutable(int dummy, uint32 start, uint32 length)
1316		{
1317	<	if ((start >= ROM_BASE) && (start < (ROM_BASE + ROM_SIZE)))
1317	>	if ((start >= ROMBase) && (start < (ROMBase + ROM_SIZE)))
1318		return;
1319		#if EMULATED_PPC
1320		FlushCodeCache(start, start + length);
#	Line 1394 | Line 1427 | static void *tick_func(void *arg)
1427		}
1428
1429		uint64 end = GetTicks_usec();
1430	<	D(bug("%Ld ticks in %Ld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1430	>	D(bug("%lld ticks in %lld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1431		return NULL;
1432		}
1433
#	Line 1518 | Line 1551 | void B2_delete_mutex(B2_mutex *mutex)
1551		#if !EMULATED_PPC
1552		void TriggerInterrupt(void)
1553		{
1554	<	if (ready_for_signals)
1554	>	if (ready_for_signals) {
1555	>	idle_resume();
1556		pthread_kill(emul_thread, SIGUSR2);
1557	+	}
1558		}
1559		#endif
1560
#	Line 1574 | Line 1609 | void EnableInterrupt(void)
1609		*/
1610
1611		#if !EMULATED_PPC
1612	<	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1612	>	void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1613		{
1614		machine_regs *r = MACHINE_REGISTERS(scp);
1615
1616	+	#ifdef SYSTEM_CLOBBERS_R2
1617	+	// Restore pointer to Thread Local Storage
1618	+	set_r2(TOC);
1619	+	#endif
1620	+	#ifdef SYSTEM_CLOBBERS_R13
1621	+	// Restore pointer to .sdata section
1622	+	set_r13(R13);
1623	+	#endif
1624	+
1625		#ifdef USE_SDL_VIDEO
1626		// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1627		SDL_PumpEvents();
#	Line 1603 | Line 1647 | static void sigusr2_handler(int sig, sig
1647		// 68k emulator inactive, in nanokernel?
1648		if (r->gpr(1) != KernelDataAddr) {
1649
1650	<	// Set extra stack for nested interrupts
1651	<	sig_stack_acquire();
1650	>	// Set extra stack for SIGSEGV handler
1651	>	sigaltstack(&extra_stack, NULL);
1652
1653		// Prepare for 68k interrupt level 1
1654		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
#	Line 1613 | Line 1657 | static void sigusr2_handler(int sig, sig
1657		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1658		DisableInterrupt();
1659		if (ROMType == ROMTYPE_NEWWORLD)
1660	<	ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1660	>	ppc_interrupt(ROMBase + 0x312b1c, KernelDataAddr);
1661		else
1662	<	ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1662	>	ppc_interrupt(ROMBase + 0x312a3c, KernelDataAddr);
1663
1664	<	// Reset normal signal stack
1665	<	sig_stack_release();
1664	>	// Reset normal stack
1665	>	sigaltstack(&sig_stack, NULL);
1666		}
1667		break;
1668		#endif
#	Line 1629 | Line 1673 | static void sigusr2_handler(int sig, sig
1673		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1674
1675		// Set extra stack for SIGSEGV handler
1676	<	sig_stack_acquire();
1676	>	sigaltstack(&extra_stack, NULL);
1677		#if 1
1678		// Execute full 68k interrupt routine
1679		M68kRegisters r;
#	Line 1655 | Line 1699 | static void sigusr2_handler(int sig, sig
1699		}
1700		}
1701		#endif
1702	<	// Reset normal signal stack
1703	<	sig_stack_release();
1702	>	// Reset normal stack
1703	>	sigaltstack(&sig_stack, NULL);
1704		}
1705		break;
1706		#endif
#	Line 1677 | Line 1721 | static void sigsegv_handler(int sig, sig
1721		// Get effective address
1722		uint32 addr = r->dar();
1723
1724	+	#ifdef SYSTEM_CLOBBERS_R2
1725	+	// Restore pointer to Thread Local Storage
1726	+	set_r2(TOC);
1727	+	#endif
1728	+	#ifdef SYSTEM_CLOBBERS_R13
1729	+	// Restore pointer to .sdata section
1730	+	set_r13(R13);
1731	+	#endif
1732	+
1733		#if ENABLE_VOSF
1734	<	// Handle screen fault.
1735	<	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1736	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1734	>	// Handle screen fault
1735	>	#if SIGSEGV_CHECK_VERSION(1,0,0)
1736	>	sigsegv_info_t si;
1737	>	si.addr = (sigsegv_address_t)addr;
1738	>	si.pc = (sigsegv_address_t)r->pc();
1739	>	#endif
1740	>	extern bool Screen_fault_handler(sigsegv_info_t *sip);
1741	>	if (Screen_fault_handler(&si))
1742		return;
1743		#endif
1744
1745		num_segv++;
1746
1747		// Fault in Mac ROM or RAM or DR Cache?
1748	<	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));
1748	>	bool mac_fault = (r->pc() >= ROMBase) && (r->pc() < (ROMBase + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize)) || (r->pc() >= DR_CACHE_BASE && r->pc() < (DR_CACHE_BASE + DR_CACHE_SIZE));
1749		if (mac_fault) {
1750
1751		// "VM settings" during MacOS 8 installation
1752	<	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1752	>	if (r->pc() == ROMBase + 0x488160 && r->gpr(20) == 0xf8000000) {
1753		r->pc() += 4;
1754		r->gpr(8) = 0;
1755		return;
1756
1757		// MacOS 8.5 installation
1758	<	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1758	>	} else if (r->pc() == ROMBase + 0x488140 && r->gpr(16) == 0xf8000000) {
1759		r->pc() += 4;
1760		r->gpr(8) = 0;
1761		return;
1762
1763		// MacOS 8 serial drivers on startup
1764	<	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1764	>	} else if (r->pc() == ROMBase + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1765		r->pc() += 4;
1766		r->gpr(8) = 0;
1767		return;
1768
1769		// MacOS 8.1 serial drivers on startup
1770	<	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1770	>	} else if (r->pc() == ROMBase + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1771		r->pc() += 4;
1772		return;
1773	<	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1773	>	} else if (r->pc() == ROMBase + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1774		r->pc() += 4;
1775		return;
1776
#	Line 1845 | Line 1903 | static void sigsegv_handler(int sig, sig
1903
1904		// Ignore ROM writes (including to the zero page, which is read-only)
1905		if (transfer_type == TYPE_STORE &&
1906	<	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) ||
1906	>	((addr >= ROMBase && addr < ROMBase + ROM_SIZE) ||
1907		(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1908		//                      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()));
1909		if (addr_mode == MODE_U || addr_mode == MODE_UX)
#	Line 1926 | Line 1984 | static void sigill_handler(int sig, sigi
1984		machine_regs *r = MACHINE_REGISTERS(scp);
1985		char str[256];
1986
1987	+	#ifdef SYSTEM_CLOBBERS_R2
1988	+	// Restore pointer to Thread Local Storage
1989	+	set_r2(TOC);
1990	+	#endif
1991	+	#ifdef SYSTEM_CLOBBERS_R13
1992	+	// Restore pointer to .sdata section
1993	+	set_r13(R13);
1994	+	#endif
1995	+
1996		// Fault in Mac ROM or RAM?
1997	<	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1997	>	bool mac_fault = (r->pc() >= ROMBase) && (r->pc() < (ROMBase + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1998		if (mac_fault) {
1999
2000		// Get opcode and divide into fields
#	Line 2095 | Line 2162 | bool SheepMem::Init(void)
2162
2163		// Allocate SheepShaver globals
2164		proc = base;
2165	<	if (vm_mac_acquire(base, size) < 0)
2165	>	if (vm_mac_acquire_fixed(base, size) < 0)
2166		return false;
2167
2168		// Allocate page with all bits set to 0, right in the middle
#	Line 2108 | Line 2175 | bool SheepMem::Init(void)
2175		#if EMULATED_PPC
2176		// Allocate alternate stack for PowerPC interrupt routine
2177		sig_stack = base + size;
2178	<	if (vm_mac_acquire(sig_stack, SIG_STACK_SIZE) < 0)
2178	>	if (vm_mac_acquire_fixed(sig_stack, SIG_STACK_SIZE) < 0)
2179		return false;
2180		#endif
2181
#	Line 2179 | Line 2246 | void display_alert(int title_id, int pre
2246
2247		void ErrorAlert(const char *text)
2248		{
2249	+	if (gui_connection) {
2250	+	if (rpc_method_invoke(gui_connection, RPC_METHOD_ERROR_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2251	+	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2252	+	return;
2253	+	}
2254		#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2255		if (PrefsFindBool("nogui") || x_display == NULL) {
2256		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
#	Line 2198 | Line 2270 | void ErrorAlert(const char *text)
2270
2271		void WarningAlert(const char *text)
2272		{
2273	+	if (gui_connection) {
2274	+	if (rpc_method_invoke(gui_connection, RPC_METHOD_WARNING_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2275	+	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2276	+	return;
2277	+	}
2278		#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2279		if (PrefsFindBool("nogui") || x_display == NULL) {
2280		printf(GetString(STR_SHELL_WARNING_PREFIX), text);

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