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

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.8 by gbeauche, 2003-09-29T15:46:07Z vs.
Revision 1.94 by asvitkine, 2011-12-28T23:17:29Z

#	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) 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 80 | 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 93 | Line 103
103		#include "xpram.h"
104		#include "timer.h"
105		#include "adb.h"
96	–	#include "sony.h"
97	–	#include "disk.h"
98	–	#include "cdrom.h"
99	–	#include "scsi.h"
106		#include "video.h"
101	–	#include "audio.h"
102	–	#include "ether.h"
103	–	#include "serial.h"
104	–	#include "clip.h"
105	–	#include "extfs.h"
107		#include "sys.h"
108		#include "macos_util.h"
109		#include "rom_patches.h"
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"
118
119
120	+	#ifdef HAVE_DIRENT_H
121	+	#include <dirent.h>
122	+	#endif
123	+
124	+	#ifdef USE_SDL
125	+	#include <SDL.h>
126	+	#endif
127	+
128	+	#ifndef USE_SDL_VIDEO
129		#include <X11/Xlib.h>
130	+	#endif
131
132		#ifdef ENABLE_GTK
133		#include <gtk/gtk.h>
#	Line 123 | 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 131 | Line 144
144		#endif
145
146
147	+	// Enable emulation of unaligned lmw/stmw?
148	+	#define EMULATE_UNALIGNED_LOADSTORE_MULTIPLE 1
149	+
150		// Enable Execute68k() safety checks?
151		#define SAFE_EXEC_68K 0
152
#	Line 145 | Line 161
161		const char ROM_FILE_NAME[] = "ROM";
162		const char ROM_FILE_NAME2[] = "Mac OS ROM";
163
164	<	const uint32 RAM_BASE = 0x20000000;                     // Base address of RAM
165	<	const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
166	<
167	<
168	<	#if !EMULATED_PPC
169	<	// Structure in which registers are saved in a signal handler;
170	<	// sigcontext->regs points to it
155	<	// (see arch/ppc/kernel/signal.c)
156	<	typedef struct {
157	<	uint32 u[4];
158	<	} __attribute((aligned(16))) vector128;
159	<	#include <linux/elf.h>
160	<
161	<	struct sigregs {
162	<	elf_gregset_t   gp_regs;                                // Identical to pt_regs
163	<	double                  fp_regs[ELF_NFPREG];    // f0..f31 and fpsrc
164	<	//more (uninteresting) stuff following here
165	<	};
164	>	#if !REAL_ADDRESSING
165	>	// FIXME: needs to be >= 0x04000000
166	>	const uintptr RAM_BASE = 0x10000000;            // Base address of RAM
167	>	#endif
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 SheepStack1Base; // SheepShaver first alternate stack base
176	<	uint32 SheepStack2Base; // SheepShaver second alternate stack base
177	<	uint32 SheepThunksBase; // SheepShaver thunks base
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
186		uint32 PVR;                             // Theoretical PVR
187		int64 CPUClockSpeed;    // Processor clock speed (Hz)
188		int64 BusClockSpeed;    // Bus clock speed (Hz)
189	+	int64 TimebaseSpeed;    // Timebase clock speed (Hz)
190	+	uint8 *RAMBaseHost;             // Base address of Mac RAM (host address space)
191	+	uint8 *ROMBaseHost;             // Base address of Mac ROM (host address space)
192
193
194		// Global variables
195	<	static char *x_display_name = NULL;                     // X11 display name
195	>	#ifndef USE_SDL_VIDEO
196	>	char *x_display_name = NULL;                            // X11 display name
197		Display *x_display = NULL;                                      // X11 display handle
198	+	#ifdef X11_LOCK_TYPE
199	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
200	+	#endif
201	+	#endif
202
203		static int zero_fd = 0;                                         // FD of /dev/zero
190	–	static bool sheep_area_mapped = false;          // Flag: SheepShaver data area mmap()ed
204		static bool lm_area_mapped = false;                     // Flag: Low Memory area mmap()ped
205		static int kernel_area = -1;                            // SHM ID of Kernel Data area
206		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
207		static bool ram_area_mapped = false;            // Flag: Mac RAM mmap()ped
208	+	static bool dr_cache_area_mapped = false;       // Flag: Mac DR Cache mmap()ped
209	+	static bool dr_emulator_area_mapped = false;// Flag: Mac DR Emulator mmap()ped
210		static KernelData *kernel_data;                         // Pointer to Kernel Data
211		static EmulatorData *emulator_data;
212
213		static uint8 last_xpram[XPRAM_SIZE];            // Buffer for monitoring XPRAM changes
214
215		static bool nvram_thread_active = false;        // Flag: NVRAM watchdog installed
216	+	static volatile bool nvram_thread_cancel;       // Flag: Cancel NVRAM thread
217		static pthread_t nvram_thread;                          // NVRAM watchdog
218		static bool tick_thread_active = false;         // Flag: MacOS thread installed
219	+	static volatile bool tick_thread_cancel;        // Flag: Cancel 60Hz thread
220		static pthread_t tick_thread;                           // 60Hz thread
221		static pthread_t emul_thread;                           // MacOS thread
222
#	Line 207 | Line 224 | static bool ready_for_signals = false;
224		static int64 num_segv = 0;                                      // Number of handled SEGV signals
225
226		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
227	<	#if !EMULATED_PPC
227	>	#if EMULATED_PPC
228	>	static uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
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 void *sig_stack = NULL;                          // Stack for signal handlers
233	<	static void *extra_stack = NULL;                        // Stack for SIGSEGV inside interrupt handler
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
245	+	uintptr SheepMem::proc;                                         // Bottom address of SheepShave procedures
246	+	uintptr SheepMem::data;                                         // Top of SheepShaver data (stack like storage)
247	+
248
249		// Prototypes
250	+	static bool kernel_data_init(void);
251	+	static void kernel_data_exit(void);
252		static void Quit(void);
253		static void *emul_func(void *arg);
254		static void *nvram_func(void *arg);
255		static void *tick_func(void *arg);
256		#if EMULATED_PPC
257	<	static void sigusr2_handler(int sig);
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_info_t *sip);
261		#else
262	<	static void sigusr2_handler(int sig, sigcontext_struct *sc);
263	<	static void sigsegv_handler(int sig, sigcontext_struct *sc);
264	<	static void sigill_handler(int sig, sigcontext_struct *sc);
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
267
268
269		// From asm_linux.S
270	<	#if EMULATED_PPC
236	<	extern int atomic_add(int *var, int v);
237	<	extern int atomic_and(int *var, int v);
238	<	extern int atomic_or(int *var, int v);
239	<	#else
240	<	extern "C" void *get_toc(void);
270	>	#if !EMULATED_PPC
271		extern "C" void *get_sp(void);
272	<	extern "C" void flush_icache_range(void *start, void *end);
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);
279		extern "C" void execute_68k(uint32 pc, M68kRegisters *r);
#	Line 251 | Line 285 | extern void paranoia_check(void);
285		#endif
286
287
288	+	#if EMULATED_PPC
289	+	/*
290	+	*  Return signal stack base
291	+	*/
292	+
293	+	uintptr SignalStackBase(void)
294	+	{
295	+	return sig_stack + SIG_STACK_SIZE;
296	+	}
297	+
298	+
299	+	/*
300	+	*  Atomic operations
301	+	*/
302	+
303	+	#if HAVE_SPINLOCKS
304	+	static spinlock_t atomic_ops_lock = SPIN_LOCK_UNLOCKED;
305	+	#else
306	+	#define spin_lock(LOCK)
307	+	#define spin_unlock(LOCK)
308	+	#endif
309	+
310	+	int atomic_add(int *var, int v)
311	+	{
312	+	spin_lock(&atomic_ops_lock);
313	+	int ret = *var;
314	+	*var += v;
315	+	spin_unlock(&atomic_ops_lock);
316	+	return ret;
317	+	}
318	+
319	+	int atomic_and(int *var, int v)
320	+	{
321	+	spin_lock(&atomic_ops_lock);
322	+	int ret = *var;
323	+	*var &= v;
324	+	spin_unlock(&atomic_ops_lock);
325	+	return ret;
326	+	}
327	+
328	+	int atomic_or(int *var, int v)
329	+	{
330	+	spin_lock(&atomic_ops_lock);
331	+	int ret = *var;
332	+	*var |= v;
333	+	spin_unlock(&atomic_ops_lock);
334	+	return ret;
335	+	}
336	+	#endif
337	+
338	+
339	+	/*
340	+	*  Memory management helpers
341	+	*/
342	+
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	+	}
352	+
353	+	static inline int vm_mac_release(uint32 addr, uint32 size)
354	+	{
355	+	return vm_release(Mac2HostAddr(addr), size);
356	+	}
357	+
358	+
359		/*
360		*  Main program
361		*/
#	Line 264 | Line 369 | static void usage(const char *prg_name)
369		exit(0);
370		}
371
372	+	static bool valid_vmdir(const char *path)
373	+	{
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	+	}
383	+	}
384	+	return false;
385	+	}
386	+
387	+	static void get_system_info(void)
388	+	{
389	+	#if !EMULATED_PPC
390	+	FILE *proc_file;
391	+	#endif
392	+
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__)
401	+	proc_file = popen("ioreg -c IOPlatformDevice", "r");
402	+	if (proc_file) {
403	+	char line[256];
404	+	bool powerpc_node = false;
405	+	while (fgets(line, sizeof(line) - 1, proc_file)) {
406	+	// Read line
407	+	int len = strlen(line);
408	+	if (len == 0)
409	+	continue;
410	+	line[len - 1] = 0;
411	+
412	+	// Parse line
413	+	if (strstr(line, "o PowerPC,"))
414	+	powerpc_node = true;
415	+	else if (powerpc_node) {
416	+	uint32 value;
417	+	char head[256];
418	+	if (sscanf(line, "%[ |]\"cpu-version\" = <%x>", head, &value) == 2)
419	+	PVR = value;
420	+	else if (sscanf(line, "%[ |]\"clock-frequency\" = <%x>", head, &value) == 2)
421	+	CPUClockSpeed = value;
422	+	else if (sscanf(line, "%[ |]\"bus-frequency\" = <%x>", head, &value) == 2)
423	+	BusClockSpeed = value;
424	+	else if (sscanf(line, "%[ |]\"timebase-frequency\" = <%x>", head, &value) == 2)
425	+	TimebaseSpeed = value;
426	+	else if (strchr(line, '}'))
427	+	powerpc_node = false;
428	+	}
429	+	}
430	+	fclose(proc_file);
431	+	} else {
432	+	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
433	+	WarningAlert(str);
434	+	}
435	+	#else
436	+	proc_file = fopen("/proc/cpuinfo", "r");
437	+	if (proc_file) {
438	+	// CPU specs from Linux kernel
439	+	// TODO: make it more generic with features (e.g. AltiVec) and
440	+	// cache information and friends for NameRegistry
441	+	static const struct {
442	+	uint32 pvr_mask;
443	+	uint32 pvr_value;
444	+	const char *cpu_name;
445	+	}
446	+	cpu_specs[] = {
447	+	{ 0xffff0000, 0x00010000, "601" },
448	+	{ 0xffff0000, 0x00030000, "603" },
449	+	{ 0xffff0000, 0x00060000, "603e" },
450	+	{ 0xffff0000, 0x00070000, "603ev" },
451	+	{ 0xffff0000, 0x00040000, "604" },
452	+	{ 0xfffff000, 0x00090000, "604e" },
453	+	{ 0xffff0000, 0x00090000, "604r" },
454	+	{ 0xffff0000, 0x000a0000, "604ev" },
455	+	{ 0xffffffff, 0x00084202, "740/750" },
456	+	{ 0xfffff000, 0x00083000, "745/755" },
457	+	{ 0xfffffff0, 0x00080100, "750CX" },
458	+	{ 0xfffffff0, 0x00082200, "750CX" },
459	+	{ 0xfffffff0, 0x00082210, "750CXe" },
460	+	{ 0xffffff00, 0x70000100, "750FX" },
461	+	{ 0xffffffff, 0x70000200, "750FX" },
462	+	{ 0xffff0000, 0x70000000, "750FX" },
463	+	{ 0xffff0000, 0x70020000, "750GX" },
464	+	{ 0xffff0000, 0x00080000, "740/750" },
465	+	{ 0xffffffff, 0x000c1101, "7400 (1.1)" },
466	+	{ 0xffff0000, 0x000c0000, "7400" },
467	+	{ 0xffff0000, 0x800c0000, "7410" },
468	+	{ 0xffffffff, 0x80000200, "7450" },
469	+	{ 0xffffffff, 0x80000201, "7450" },
470	+	{ 0xffff0000, 0x80000000, "7450" },
471	+	{ 0xffffff00, 0x80010100, "7455" },
472	+	{ 0xffffffff, 0x80010200, "7455" },
473	+	{ 0xffff0000, 0x80010000, "7455" },
474	+	{ 0xffff0000, 0x80020000, "7457" },
475	+	{ 0xffff0000, 0x80030000, "7447A" },
476	+	{ 0xffff0000, 0x80040000, "7448" },
477	+	{ 0x7fff0000, 0x00810000, "82xx" },
478	+	{ 0x7fff0000, 0x00820000, "8280" },
479	+	{ 0xffff0000, 0x00400000, "Power3 (630)" },
480	+	{ 0xffff0000, 0x00410000, "Power3 (630+)" },
481	+	{ 0xffff0000, 0x00360000, "I-star" },
482	+	{ 0xffff0000, 0x00370000, "S-star" },
483	+	{ 0xffff0000, 0x00350000, "Power4" },
484	+	{ 0xffff0000, 0x00390000, "PPC970" },
485	+	{ 0xffff0000, 0x003c0000, "PPC970FX" },
486	+	{ 0xffff0000, 0x00440000, "PPC970MP" },
487	+	{ 0xffff0000, 0x003a0000, "POWER5 (gr)" },
488	+	{ 0xffff0000, 0x003b0000, "POWER5+ (gs)" },
489	+	{ 0xffff0000, 0x003e0000, "POWER6" },
490	+	{ 0xffff0000, 0x00700000, "Cell Broadband Engine" },
491	+	{ 0x7fff0000, 0x00900000, "PA6T" },
492	+	{ 0, 0, 0 }
493	+	};
494	+
495	+	char line[256];
496	+	while(fgets(line, 255, proc_file)) {
497	+	// Read line
498	+	int len = strlen(line);
499	+	if (len == 0)
500	+	continue;
501	+	line[len-1] = 0;
502	+
503	+	// Parse line
504	+	int i;
505	+	float f;
506	+	char value[256];
507	+	if (sscanf(line, "cpu : %[^,]", value) == 1) {
508	+	// Search by name
509	+	const char *cpu_name = NULL;
510	+	for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
511	+	if (strcmp(cpu_specs[i].cpu_name, value) == 0) {
512	+	cpu_name = cpu_specs[i].cpu_name;
513	+	PVR = cpu_specs[i].pvr_value;
514	+	break;
515	+	}
516	+	}
517	+	if (cpu_name == NULL)
518	+	printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
519	+	else
520	+	printf("Found a PowerPC %s processor\n", cpu_name);
521	+	}
522	+	if (sscanf(line, "clock : %fMHz", &f) == 1)
523	+	CPUClockSpeed = BusClockSpeed = ((int64)f) * 1000000;
524	+	else if (sscanf(line, "clock : %dMHz", &i) == 1)
525	+	CPUClockSpeed = BusClockSpeed = i * 1000000;
526	+	}
527	+	fclose(proc_file);
528	+	} else {
529	+	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
530	+	WarningAlert(str);
531	+	}
532	+
533	+	// Get actual bus frequency
534	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
535	+	if (proc_file) {
536	+	union { uint8 b[4]; uint32 l; } value;
537	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
538	+	BusClockSpeed = value.l;
539	+	fclose(proc_file);
540	+	}
541	+
542	+	// Get actual timebase frequency
543	+	TimebaseSpeed = BusClockSpeed / 4;
544	+	DIR *cpus_dir;
545	+	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
546	+	struct dirent *cpu_entry;
547	+	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
548	+	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
549	+	char timebase_freq_node[256];
550	+	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
551	+	proc_file = fopen(timebase_freq_node, "r");
552	+	if (proc_file) {
553	+	union { uint8 b[4]; uint32 l; } value;
554	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
555	+	TimebaseSpeed = value.l;
556	+	fclose(proc_file);
557	+	}
558	+	}
559	+	}
560	+	closedir(cpus_dir);
561	+	}
562	+	#endif
563	+
564	+	// Remap any newer G4/G5 processor to plain G4 for compatibility
565	+	switch (PVR >> 16) {
566	+	case 0x8000:                            // 7450
567	+	case 0x8001:                            // 7455
568	+	case 0x8002:                            // 7457
569	+	case 0x8003:                            // 7447A
570	+	case 0x8004:                            // 7448
571	+	case 0x0039:                            //  970
572	+	case 0x003c:                            //  970FX
573	+	case 0x0044:                            //  970MP
574	+	PVR = 0x000c0000;               // 7400
575	+	break;
576	+	}
577	+	D(bug("PVR: %08x (assumed)\n", PVR));
578	+	}
579	+
580		int main(int argc, char **argv)
581		{
582		char str[256];
270	–	uint32 *boot_globs;
271	–	int16 i16;
272	–	int drive, driver;
583		int rom_fd;
274	–	FILE *proc_file;
584		const char *rom_path;
585		uint32 rom_size, actual;
586		uint8 *rom_tmp;
587	<	time_t now, expire;
587	>	bool memory_mapped_from_zero, ram_rom_areas_contiguous;
588	>	const char *vmdir = NULL;
589	>
590	>	#ifdef USE_SDL_VIDEO
591	>	// Don't let SDL block the screensaver
592	>	setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", TRUE);
593	>
594	>	// Make SDL pass through command-clicks and option-clicks unaltered
595	>	setenv("SDL_HAS3BUTTONMOUSE", "1", TRUE);
596	>	#endif
597
598		// Initialize variables
599		RAMBase = 0;
#	Line 286 | Line 604 | int main(int argc, char **argv)
604		printf(" %s\n", GetString(STR_ABOUT_TEXT2));
605
606		#if !EMULATED_PPC
607	+	#ifdef SYSTEM_CLOBBERS_R2
608		// Get TOC pointer
609	<	TOC = get_toc();
609	>	TOC = get_r2();
610	>	#endif
611	>	#ifdef SYSTEM_CLOBBERS_R13
612	>	// Get r13 register
613	>	R13 = get_r13();
614		#endif
292	–
293	–	#ifdef ENABLE_GTK
294	–	// Init GTK
295	–	gtk_set_locale();
296	–	gtk_init(&argc, &argv);
615		#endif
298	–
299	–	// Read preferences
300	–	PrefsInit(argc, argv);
616
617		// Parse command line arguments
618		for (int i=1; i<argc; i++) {
619		if (strcmp(argv[i], "--help") == 0) {
620		usage(argv[0]);
621	+	#ifndef USE_SDL_VIDEO
622		} else if (strcmp(argv[i], "--display") == 0) {
623		i++;
624		if (i < argc)
625		x_display_name = strdup(argv[i]);
626	<	} else if (argv[i][0] == '-') {
626	>	#endif
627	>	} else if (strcmp(argv[i], "--gui-connection") == 0) {
628	>	argv[i++] = NULL;
629	>	if (i < argc) {
630	>	gui_connection_path = argv[i];
631	>	argv[i] = NULL;
632	>	}
633	>	} else if (valid_vmdir(argv[i])) {
634	>	vmdir = argv[i];
635	>	argv[i] = NULL;
636	>	printf("Using %s as vmdir.\n", vmdir);
637	>	if (chdir(vmdir)) {
638	>	printf("Failed to chdir to %s. Good bye.", vmdir);
639	>	exit(1);
640	>	}
641	>	break;
642	>	}
643	>	}
644	>
645	>	// Remove processed arguments
646	>	for (int i=1; i<argc; i++) {
647	>	int k;
648	>	for (k=i; k<argc; k++)
649	>	if (argv[k] != NULL)
650	>	break;
651	>	if (k > i) {
652	>	k -= i;
653	>	for (int j=i+k; j<argc; j++)
654	>	argv[j-k] = argv[j];
655	>	argc -= k;
656	>	}
657	>	}
658	>
659	>	// Connect to the external GUI
660	>	if (gui_connection_path) {
661	>	if ((gui_connection = rpc_init_client(gui_connection_path)) == NULL) {
662	>	fprintf(stderr, "Failed to initialize RPC client connection to the GUI\n");
663	>	return 1;
664	>	}
665	>	}
666	>
667	>	#ifdef ENABLE_GTK
668	>	if (!gui_connection) {
669	>	// Init GTK
670	>	gtk_set_locale();
671	>	gtk_init(&argc, &argv);
672	>	}
673	>	#endif
674	>
675	>	// Read preferences
676	>	PrefsInit(vmdir, argc, argv);
677	>
678	>	// Any command line arguments left?
679	>	for (int i=1; i<argc; i++) {
680	>	if (argv[i][0] == '-') {
681		fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
682		usage(argv[0]);
683		}
684		}
685
686	+	#ifdef USE_SDL
687	+	// Initialize SDL system
688	+	int sdl_flags = 0;
689	+	#ifdef USE_SDL_VIDEO
690	+	sdl_flags |= SDL_INIT_VIDEO;
691	+	#endif
692	+	#ifdef USE_SDL_AUDIO
693	+	sdl_flags |= SDL_INIT_AUDIO;
694	+	#endif
695	+	assert(sdl_flags != 0);
696	+	if (SDL_Init(sdl_flags) == -1) {
697	+	char str[256];
698	+	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
699	+	ErrorAlert(str);
700	+	goto quit;
701	+	}
702	+	atexit(SDL_Quit);
703	+
704	+	// Don't let SDL catch SIGINT and SIGTERM signals
705	+	signal(SIGINT, SIG_DFL);
706	+	signal(SIGTERM, SIG_DFL);
707	+	#endif
708	+
709	+	#ifndef USE_SDL_VIDEO
710		// Open display
711		x_display = XOpenDisplay(x_display_name);
712		if (x_display == NULL) {
#	Line 326 | Line 720 | int main(int argc, char **argv)
720		// Fork out, so we can return from fullscreen mode when things get ugly
721		XF86DGAForkApp(DefaultScreen(x_display));
722		#endif
723	+	#endif
724
725		#ifdef ENABLE_MON
726		// Initialize mon
727		mon_init();
728		#endif
729
335	–	// Get system info
336	–	PVR = 0x00040000;                       // Default: 604
337	–	CPUClockSpeed = 100000000;      // Default: 100MHz
338	–	BusClockSpeed = 100000000;      // Default: 100MHz
730		#if !EMULATED_PPC
731	<	proc_file = fopen("/proc/cpuinfo", "r");
732	<	if (proc_file) {
733	<	char line[256];
734	<	while(fgets(line, 255, proc_file)) {
735	<	// Read line
736	<	int len = strlen(line);
737	<	if (len == 0)
738	<	continue;
739	<	line[len-1] = 0;
731	>	// Create and install stacks for signal handlers
732	>	sig_stack.ss_sp = malloc(SIG_STACK_SIZE);
733	>	D(bug("Signal stack at %p\n", sig_stack.ss_sp));
734	>	if (sig_stack.ss_sp == NULL) {
735	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
736	>	goto quit;
737	>	}
738	>	sig_stack.ss_flags = 0;
739	>	sig_stack.ss_size = SIG_STACK_SIZE;
740	>	if (sigaltstack(&sig_stack, NULL) < 0) {
741	>	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
742	>	ErrorAlert(str);
743	>	goto quit;
744	>	}
745	>	extra_stack.ss_sp = malloc(SIG_STACK_SIZE);
746	>	D(bug("Extra stack at %p\n", extra_stack.ss_sp));
747	>	if (extra_stack.ss_sp == NULL) {
748	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
749	>	goto quit;
750	>	}
751	>	extra_stack.ss_flags = 0;
752	>	extra_stack.ss_size = SIG_STACK_SIZE;
753	>	#endif
754
755	<	// Parse line
756	<	int i;
757	<	char value[256];
758	<	if (sscanf(line, "cpu : %s", value) == 1) {
759	<	if (strcmp(value, "601") == 0)
760	<	PVR = 0x00010000;
761	<	else if (strcmp(value, "603") == 0)
762	<	PVR = 0x00030000;
763	<	else if (strcmp(value, "604") == 0)
764	<	PVR = 0x00040000;
765	<	else if (strcmp(value, "603e") == 0)
766	<	PVR = 0x00060000;
767	<	else if (strcmp(value, "603ev") == 0)
768	<	PVR = 0x00070000;
769	<	else if (strcmp(value, "604e") == 0)
770	<	PVR = 0x00090000;
771	<	else if (strcmp(value, "604ev5") == 0)
772	<	PVR = 0x000a0000;
773	<	else if (strcmp(value, "750") == 0)
774	<	PVR = 0x00080000;
775	<	else if (strcmp(value, "821") == 0)
776	<	PVR = 0x00320000;
777	<	else if (strcmp(value, "860") == 0)
778	<	PVR = 0x00500000;
779	<	else
375	<	printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
376	<	}
377	<	if (sscanf(line, "clock : %dMHz", &i) == 1)
378	<	CPUClockSpeed = BusClockSpeed = i * 1000000;
379	<	}
380	<	fclose(proc_file);
381	<	} else {
382	<	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
383	<	WarningAlert(str);
755	>	#if !EMULATED_PPC
756	>	// Install SIGSEGV and SIGBUS handlers
757	>	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
758	>	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
759	>	sigsegv_action.sa_sigaction = sigsegv_handler;
760	>	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
761	>	#ifdef HAVE_SIGNAL_SA_RESTORER
762	>	sigsegv_action.sa_restorer = NULL;
763	>	#endif
764	>	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
765	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
766	>	ErrorAlert(str);
767	>	goto quit;
768	>	}
769	>	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
770	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGBUS", strerror(errno));
771	>	ErrorAlert(str);
772	>	goto quit;
773	>	}
774	>	#else
775	>	// Install SIGSEGV handler for CPU emulator
776	>	if (!sigsegv_install_handler(sigsegv_handler)) {
777	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
778	>	ErrorAlert(str);
779	>	goto quit;
780		}
781		#endif
782	<	D(bug("PVR: %08x (assumed)\n", PVR));
782	>
783	>	// Initialize VM system
784	>	vm_init();
785	>
786	>	// Get system info
787	>	get_system_info();
788
789		// Init system routines
790		SysInit();
#	Line 406 | Line 807 | int main(int argc, char **argv)
807		goto quit;
808		}
809
409	–	// Create Low Memory area (0x0000..0x3000)
410	–	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
411	–	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
412	–	ErrorAlert(str);
413	–	goto quit;
414	–	}
415	–	lm_area_mapped = true;
416	–
810		// Create areas for Kernel Data
811	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
812	<	if (kernel_area == -1) {
813	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
811	>	if (!kernel_data_init())
812	>	goto quit;
813	>	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
814	>	emulator_data = &kernel_data->ed;
815	>	KernelDataAddr = KERNEL_DATA_BASE;
816	>	D(bug("Kernel Data at %p (%08x)\n", kernel_data, KERNEL_DATA_BASE));
817	>	D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
818	>
819	>	// Create area for DR Cache
820	>	if (vm_mac_acquire_fixed(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
821	>	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
822		ErrorAlert(str);
823		goto quit;
824		}
825	<	if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) {
826	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
825	>	dr_emulator_area_mapped = true;
826	>	if (vm_mac_acquire_fixed(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
827	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
828		ErrorAlert(str);
829		goto quit;
830		}
831	<	if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) {
832	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
831	>	dr_cache_area_mapped = true;
832	>	#if !EMULATED_PPC
833	>	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
834	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
835		ErrorAlert(str);
836		goto quit;
837		}
838	<	kernel_data = (KernelData *)0x68ffe000;
839	<	emulator_data = &kernel_data->ed;
840	<	KernelDataAddr = (uint32)kernel_data;
437	<	D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
838	>	#endif
839	>	DRCacheAddr = DR_CACHE_BASE;
840	>	D(bug("DR Cache at %p\n", DRCacheAddr));
841
842		// Create area for SheepShaver data
843	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
843	>	if (!SheepMem::Init()) {
844		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
845		ErrorAlert(str);
846		goto quit;
847		}
848	<	SheepStack1Base = SHEEP_BASE + 0x10000;
446	<	SheepStack2Base = SheepStack1Base + 0x10000;
447	<	SheepThunksBase = SheepStack2Base + 0x1000;
448	<	sheep_area_mapped = true;
449	<
450	<	// Create area for Mac ROM
451	<	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
452	<	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
453	<	ErrorAlert(str);
454	<	goto quit;
455	<	}
456	<	#if !EMULATED_PPC || defined(__powerpc__)
457	<	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
458	<	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
459	<	ErrorAlert(str);
460	<	goto quit;
461	<	}
462	<	#endif
463	<	rom_area_mapped = true;
464	<	D(bug("ROM area at %08x\n", ROM_BASE));
465	<
848	>
849		// Create area for Mac RAM
850		RAMSize = PrefsFindInt32("ramsize");
851		if (RAMSize < 8*1024*1024) {
852		WarningAlert(GetString(STR_SMALL_RAM_WARN));
853		RAMSize = 8*1024*1024;
854		}
855	<
856	<	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
855	>	memory_mapped_from_zero = false;
856	>	ram_rom_areas_contiguous = false;
857	>	#if REAL_ADDRESSING && HAVE_LINKER_SCRIPT
858	>	if (vm_mac_acquire_fixed(0, RAMSize) == 0) {
859	>	D(bug("Could allocate RAM from 0x0000\n"));
860	>	RAMBase = 0;
861	>	RAMBaseHost = Mac2HostAddr(RAMBase);
862	>	memory_mapped_from_zero = true;
863	>	}
864	>	#endif
865	>	if (!memory_mapped_from_zero) {
866	>	#ifndef PAGEZERO_HACK
867	>	// Create Low Memory area (0x0000..0x3000)
868	>	if (vm_mac_acquire_fixed(0, 0x3000) < 0) {
869	>	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
870	>	ErrorAlert(str);
871	>	goto quit;
872	>	}
873	>	lm_area_mapped = true;
874	>	#endif
875	>	#if REAL_ADDRESSING
876	>	// Allocate RAM at any address. Since ROM must be higher than RAM, allocate the RAM
877	>	// and ROM areas contiguously, plus a little extra to allow for ROM address alignment.
878	>	RAMBaseHost = vm_mac_acquire(RAMSize + ROM_AREA_SIZE + ROM_ALIGNMENT);
879	>	if (RAMBaseHost == VM_MAP_FAILED) {
880	>	sprintf(str, GetString(STR_RAM_ROM_MMAP_ERR), strerror(errno));
881	>	ErrorAlert(str);
882	>	goto quit;
883	>	}
884	>	RAMBase = Host2MacAddr(RAMBaseHost);
885	>	ROMBase = (RAMBase + RAMSize + ROM_ALIGNMENT -1) & -ROM_ALIGNMENT;
886	>	ROMBaseHost = Mac2HostAddr(ROMBase);
887	>	ram_rom_areas_contiguous = true;
888	>	#else
889	>	if (vm_mac_acquire_fixed(RAM_BASE, RAMSize) < 0) {
890	>	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
891	>	ErrorAlert(str);
892	>	goto quit;
893	>	}
894	>	RAMBase = RAM_BASE;
895	>	RAMBaseHost = Mac2HostAddr(RAMBase);
896	>	#endif
897	>	}
898	>	#if !EMULATED_PPC
899	>	if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
900		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
901		ErrorAlert(str);
902		goto quit;
903		}
904	+	#endif
905	+	ram_area_mapped = true;
906	+	D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
907	+
908	+	if (RAMBase > KernelDataAddr) {
909	+	ErrorAlert(GetString(STR_RAM_AREA_TOO_HIGH_ERR));
910	+	goto quit;
911	+	}
912	+
913	+	// Create area for Mac ROM
914	+	if (!ram_rom_areas_contiguous) {
915	+	if (vm_mac_acquire_fixed(ROM_BASE, ROM_AREA_SIZE) < 0) {
916	+	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
917	+	ErrorAlert(str);
918	+	goto quit;
919	+	}
920	+	ROMBase = ROM_BASE;
921	+	ROMBaseHost = Mac2HostAddr(ROMBase);
922	+	}
923		#if !EMULATED_PPC
924	<	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
925	<	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
924	>	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
925	>	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
926		ErrorAlert(str);
927		goto quit;
928		}
929		#endif
930	<	RAMBase = RAM_BASE;
931	<	ram_area_mapped = true;
487	<	D(bug("RAM area at %08x\n", RAMBase));
930	>	rom_area_mapped = true;
931	>	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROMBase));
932
933	<	if (RAMBase > ROM_BASE) {
933	>	if (RAMBase > ROMBase) {
934		ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
935		goto quit;
936		}
937
938		// Load Mac ROM
939		rom_path = PrefsFindString("rom");
940	<	rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
940	>	rom_fd = open(rom_path && *rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
941		if (rom_fd < 0) {
942	<	rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME2, O_RDONLY);
942	>	rom_fd = open(ROM_FILE_NAME2, O_RDONLY);
943		if (rom_fd < 0) {
944		ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
945		goto quit;
946		}
947		}
948	<	printf(GetString(STR_READING_ROM_FILE));
948	>	printf("%s", GetString(STR_READING_ROM_FILE));
949		rom_size = lseek(rom_fd, 0, SEEK_END);
950		lseek(rom_fd, 0, SEEK_SET);
951		rom_tmp = new uint8[ROM_SIZE];
#	Line 520 | Line 964 | int main(int argc, char **argv)
964		}
965		delete[] rom_tmp;
966
967	<	// Load NVRAM
968	<	XPRAMInit();
525	<
526	<	// Set boot volume
527	<	drive = PrefsFindInt32("bootdrive");
528	<	XPRAM[0x1378] = i16 >> 8;
529	<	XPRAM[0x1379] = i16 & 0xff;
530	<	driver = PrefsFindInt32("bootdriver");
531	<	XPRAM[0x137a] = i16 >> 8;
532	<	XPRAM[0x137b] = i16 & 0xff;
533	<
534	<	// Create BootGlobs at top of Mac memory
535	<	memset((void *)(RAMBase + RAMSize - 4096), 0, 4096);
536	<	BootGlobsAddr = RAMBase + RAMSize - 0x1c;
537	<	boot_globs = (uint32 *)BootGlobsAddr;
538	<	boot_globs[-5] = htonl(RAMBase + RAMSize);      // MemTop
539	<	boot_globs[0] = htonl(RAMBase);                         // First RAM bank
540	<	boot_globs[1] = htonl(RAMSize);
541	<	boot_globs[2] = htonl((uint32)-1);                      // End of bank table
542	<
543	<	// Init drivers
544	<	SonyInit();
545	<	DiskInit();
546	<	CDROMInit();
547	<	SCSIInit();
548	<
549	<	// Init external file system
550	<	ExtFSInit();
551	<
552	<	// Init audio
553	<	AudioInit();
554	<
555	<	// Init network
556	<	EtherInit();
557	<
558	<	// Init serial ports
559	<	SerialInit();
560	<
561	<	// Init Time Manager
562	<	TimerInit();
563	<
564	<	// Init clipboard
565	<	ClipInit();
566	<
567	<	// Init video
568	<	if (!VideoInit())
569	<	goto quit;
570	<
571	<	// Install ROM patches
572	<	if (!PatchROM()) {
573	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
967	>	// Initialize everything
968	>	if (!InitAll(vmdir))
969		goto quit;
970	<	}
970	>	D(bug("Initialization complete\n"));
971
972		// Clear caches (as we loaded and patched code) and write protect ROM
973		#if !EMULATED_PPC
974	<	MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
974	>	flush_icache_range(ROMBase, ROMBase + ROM_AREA_SIZE);
975		#endif
976	<	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
582	<
583	<	// Initialize Kernel Data
584	<	memset(kernel_data, 0, sizeof(KernelData));
585	<	if (ROMType == ROMTYPE_NEWWORLD) {
586	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
587	<	static uint8 vector_lookup_tbl[128];
588	<	static uint8 vector_mask_tbl[64];
589	<	memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
590	<	memset(vector_lookup_tbl, 0, 128);
591	<	memset(vector_mask_tbl, 0, 64);
592	<	kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
593	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree);        // OF device tree base
594	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
595	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
596	<	kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
597	<	kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
598	<	kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
599	<	kernel_data->v[0xc24 >> 2] = htonl(RAMSize);
600	<	kernel_data->v[0xc30 >> 2] = htonl(RAMSize);
601	<	kernel_data->v[0xc34 >> 2] = htonl(RAMSize);
602	<	kernel_data->v[0xc38 >> 2] = htonl(0x00010020);
603	<	kernel_data->v[0xc3c >> 2] = htonl(0x00200001);
604	<	kernel_data->v[0xc40 >> 2] = htonl(0x00010000);
605	<	kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
606	<	kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
607	<	kernel_data->v[0xf60 >> 2] = htonl(PVR);
608	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
609	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
610	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
611	<	} else {
612	<	kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
613	<	kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
614	<	kernel_data->v[0xc90 >> 2] = htonl(RAMSize);
615	<	kernel_data->v[0xc94 >> 2] = htonl(RAMSize);
616	<	kernel_data->v[0xc98 >> 2] = htonl(0x00010020);
617	<	kernel_data->v[0xc9c >> 2] = htonl(0x00200001);
618	<	kernel_data->v[0xca0 >> 2] = htonl(0x00010000);
619	<	kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
620	<	kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
621	<	kernel_data->v[0xf80 >> 2] = htonl(PVR);
622	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
623	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
624	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
625	<	}
626	<
627	<	// Initialize extra low memory
628	<	D(bug("Initializing Low Memory...\n"));
629	<	memset(NULL, 0, 0x3000);
630	<	WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
631	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data);                    // For trap replacement routines
632	<	WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
633	<	WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
634	<	WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
635	<	#if EMULATED_PPC
636	<	WriteMacInt32(XLM_ETHER_INIT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_INIT));
637	<	WriteMacInt32(XLM_ETHER_TERM, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_TERM));
638	<	WriteMacInt32(XLM_ETHER_OPEN, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_OPEN));
639	<	WriteMacInt32(XLM_ETHER_CLOSE, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_CLOSE));
640	<	WriteMacInt32(XLM_ETHER_WPUT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_WPUT));
641	<	WriteMacInt32(XLM_ETHER_RSRV, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_RSRV));
642	<	WriteMacInt32(XLM_VIDEO_DOIO, POWERPC_NATIVE_OP_FUNC(NATIVE_VIDEO_DO_DRIVER_IO));
643	<	#else
644	<	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                    // TOC pointer of emulator
645	<	WriteMacInt32(XLM_ETHER_INIT, (uint32)InitStreamModule);                // DLPI ethernet driver functions
646	<	WriteMacInt32(XLM_ETHER_TERM, (uint32)TerminateStreamModule);
647	<	WriteMacInt32(XLM_ETHER_OPEN, (uint32)ether_open);
648	<	WriteMacInt32(XLM_ETHER_CLOSE, (uint32)ether_close);
649	<	WriteMacInt32(XLM_ETHER_WPUT, (uint32)ether_wput);
650	<	WriteMacInt32(XLM_ETHER_RSRV, (uint32)ether_rsrv);
651	<	WriteMacInt32(XLM_VIDEO_DOIO, (uint32)VideoDoDriverIO);
652	<	#endif
653	<	D(bug("Low Memory initialized\n"));
976	>	vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
977
978		// Start 60Hz thread
979	+	tick_thread_cancel = false;
980		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
981		D(bug("Tick thread installed (%ld)\n", tick_thread));
982
983		// Start NVRAM watchdog thread
984		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
985	+	nvram_thread_cancel = false;
986		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
987		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
988
989		#if !EMULATED_PPC
665	–	// Create and install stacks for signal handlers
666	–	sig_stack = malloc(SIG_STACK_SIZE);
667	–	D(bug("Signal stack at %p\n", sig_stack));
668	–	if (sig_stack == NULL) {
669	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
670	–	goto quit;
671	–	}
672	–	extra_stack = malloc(SIG_STACK_SIZE);
673	–	D(bug("Extra stack at %p\n", extra_stack));
674	–	if (extra_stack == NULL) {
675	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
676	–	goto quit;
677	–	}
678	–	struct sigaltstack new_stack;
679	–	new_stack.ss_sp = sig_stack;
680	–	new_stack.ss_flags = 0;
681	–	new_stack.ss_size = SIG_STACK_SIZE;
682	–	if (sigaltstack(&new_stack, NULL) < 0) {
683	–	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
684	–	ErrorAlert(str);
685	–	goto quit;
686	–	}
687	–	#endif
688	–
689	–	#if !EMULATED_PPC
690	–	// Install SIGSEGV handler
691	–	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
692	–	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
693	–	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
694	–	sigsegv_action.sa_flags = SA_ONSTACK;
695	–	sigsegv_action.sa_restorer = NULL;
696	–	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
697	–	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
698	–	ErrorAlert(str);
699	–	goto quit;
700	–	}
701	–
990		// Install SIGILL handler
991		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
992		sigaddset(&sigill_action.sa_mask, SIGUSR2);
993	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
994	<	sigill_action.sa_flags = SA_ONSTACK;
993	>	sigill_action.sa_sigaction = sigill_handler;
994	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
995	>	#ifdef HAVE_SIGNAL_SA_RESTORER
996		sigill_action.sa_restorer = NULL;
997	+	#endif
998		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
999	<	sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
999	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
1000		ErrorAlert(str);
1001		goto quit;
1002		}
1003		#endif
1004
1005	+	#if !EMULATED_PPC
1006		// Install interrupt signal handler
1007		sigemptyset(&sigusr2_action.sa_mask);
1008	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
1009	<	sigusr2_action.sa_flags = 0;
1010	<	#if !EMULATED_PPC
720	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
721	<	#endif
1008	>	sigusr2_action.sa_sigaction = sigusr2_handler_init;
1009	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
1010	>	#ifdef HAVE_SIGNAL_SA_RESTORER
1011		sigusr2_action.sa_restorer = NULL;
1012	+	#endif
1013		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
1014	<	sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
1014	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGUSR2", strerror(errno));
1015		ErrorAlert(str);
1016		goto quit;
1017		}
1018	+	#endif
1019
1020		// Get my thread ID and execute MacOS thread function
1021		emul_thread = pthread_self();
#	Line 743 | Line 1034 | quit:
1034
1035		static void Quit(void)
1036		{
1037	+	#if EMULATED_PPC
1038	+	// Exit PowerPC emulation
1039	+	exit_emul_ppc();
1040	+	#endif
1041	+
1042		// Stop 60Hz thread
1043		if (tick_thread_active) {
1044	+	tick_thread_cancel = true;
1045		pthread_cancel(tick_thread);
1046		pthread_join(tick_thread, NULL);
1047		}
1048
1049		// Stop NVRAM watchdog thread
1050		if (nvram_thread_active) {
1051	+	nvram_thread_cancel = true;
1052		pthread_cancel(nvram_thread);
1053		pthread_join(nvram_thread, NULL);
1054		}
1055
1056		#if !EMULATED_PPC
1057	<	// Uninstall SIGSEGV handler
1057	>	// Uninstall SIGSEGV and SIGBUS handlers
1058		sigemptyset(&sigsegv_action.sa_mask);
1059		sigsegv_action.sa_handler = SIG_DFL;
1060		sigsegv_action.sa_flags = 0;
1061		sigaction(SIGSEGV, &sigsegv_action, NULL);
1062	+	sigaction(SIGBUS, &sigsegv_action, NULL);
1063
1064		// Uninstall SIGILL handler
1065		sigemptyset(&sigill_action.sa_mask);
1066		sigill_action.sa_handler = SIG_DFL;
1067		sigill_action.sa_flags = 0;
1068		sigaction(SIGILL, &sigill_action, NULL);
770	–	#endif
771	–
772	–	// Save NVRAM
773	–	XPRAMExit();
774	–
775	–	// Exit clipboard
776	–	ClipExit();
777	–
778	–	// Exit Time Manager
779	–	TimerExit();
780	–
781	–	// Exit serial
782	–	SerialExit();
783	–
784	–	// Exit network
785	–	EtherExit();
1069
1070	<	// Exit audio
1071	<	AudioExit();
1072	<
1073	<	// Exit video
1074	<	VideoExit();
1070	>	// Delete stacks for signal handlers
1071	>	if (sig_stack.ss_sp)
1072	>	free(sig_stack.ss_sp);
1073	>	if (extra_stack.ss_sp)
1074	>	free(extra_stack.ss_sp);
1075	>	#endif
1076
1077	<	// Exit external file system
1078	<	ExtFSExit();
1077	>	// Deinitialize everything
1078	>	ExitAll();
1079
1080	<	// Exit drivers
1081	<	SCSIExit();
798	<	CDROMExit();
799	<	DiskExit();
800	<	SonyExit();
1080	>	// Delete SheepShaver globals
1081	>	SheepMem::Exit();
1082
1083		// Delete RAM area
1084		if (ram_area_mapped)
1085	<	vm_release((char *)RAM_BASE, RAMSize);
1085	>	vm_mac_release(RAMBase, RAMSize);
1086
1087		// Delete ROM area
1088		if (rom_area_mapped)
1089	<	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
1089	>	vm_mac_release(ROMBase, ROM_AREA_SIZE);
1090	>
1091	>	// Delete DR cache areas
1092	>	if (dr_emulator_area_mapped)
1093	>	vm_mac_release(DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
1094	>	if (dr_cache_area_mapped)
1095	>	vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
1096
1097		// Delete Kernel Data area
1098	<	if (kernel_area >= 0) {
812	<	shmdt((void *)KERNEL_DATA_BASE);
813	<	shmdt((void *)KERNEL_DATA2_BASE);
814	<	shmctl(kernel_area, IPC_RMID, NULL);
815	<	}
1098	>	kernel_data_exit();
1099
1100		// Delete Low Memory area
1101		if (lm_area_mapped)
1102	<	munmap((char *)0x0000, 0x3000);
1102	>	vm_mac_release(0, 0x3000);
1103
1104		// Close /dev/zero
1105		if (zero_fd > 0)
#	Line 834 | Line 1117 | static void Quit(void)
1117		#endif
1118
1119		// Close X11 server connection
1120	+	#ifndef USE_SDL_VIDEO
1121		if (x_display)
1122		XCloseDisplay(x_display);
1123	+	#endif
1124	+
1125	+	// Notify GUI we are about to leave
1126	+	if (gui_connection) {
1127	+	if (rpc_method_invoke(gui_connection, RPC_METHOD_EXIT, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
1128	+	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID);
1129	+	}
1130
1131		exit(0);
1132		}
1133
1134
1135		/*
1136	+	*  Initialize Kernel Data segments
1137	+	*/
1138	+
1139	+	static bool kernel_data_init(void)
1140	+	{
1141	+	char str[256];
1142	+	uint32 kernel_area_size = (KERNEL_AREA_SIZE + SHMLBA - 1) & -SHMLBA;
1143	+
1144	+	kernel_area = shmget(IPC_PRIVATE, kernel_area_size, 0600);
1145	+	if (kernel_area == -1) {
1146	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1147	+	ErrorAlert(str);
1148	+	return false;
1149	+	}
1150	+	void *kernel_addr = Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA);
1151	+	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1152	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1153	+	ErrorAlert(str);
1154	+	return false;
1155	+	}
1156	+	kernel_addr = Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA);
1157	+	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1158	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1159	+	ErrorAlert(str);
1160	+	return false;
1161	+	}
1162	+	return true;
1163	+	}
1164	+
1165	+
1166	+	/*
1167	+	*  Deallocate Kernel Data segments
1168	+	*/
1169	+
1170	+	static void kernel_data_exit(void)
1171	+	{
1172	+	if (kernel_area >= 0) {
1173	+	shmdt(Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA));
1174	+	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA));
1175	+	shmctl(kernel_area, IPC_RMID, NULL);
1176	+	}
1177	+	}
1178	+
1179	+
1180	+	/*
1181		*  Jump into Mac ROM, start 680x0 emulator
1182		*/
1183
1184		#if EMULATED_PPC
849	–	extern void emul_ppc(uint32 start);
850	–	extern void init_emul_ppc(void);
1185		void jump_to_rom(uint32 entry)
1186		{
1187		init_emul_ppc();
#	Line 871 | Line 1205 | static void *emul_func(void *arg)
1205		// Jump to ROM boot routine
1206		D(bug("Jumping to ROM\n"));
1207		#if EMULATED_PPC
1208	<	jump_to_rom(ROM_BASE + 0x310000);
1208	>	jump_to_rom(ROMBase + 0x310000);
1209		#else
1210	<	jump_to_rom(ROM_BASE + 0x310000, (uint32)emulator_data);
1210	>	jump_to_rom(ROMBase + 0x310000, (uint32)emulator_data);
1211		#endif
1212		D(bug("Returned from ROM\n"));
1213
#	Line 912 | Line 1246 | void Execute68kTrap(uint16 trap, M68kReg
1246		uint16 proc[2] = {trap, M68K_RTS};
1247		Execute68k((uint32)proc, r);
1248		}
915	–
916	–
917	–	/*
918	–	*  Execute PPC code from EMUL_OP routine (real mode switch)
919	–	*/
920	–
921	–	void ExecutePPC(void (*func)())
922	–	{
923	–	uint32 tvect[2] = {(uint32)func, 0};    // Fake TVECT
924	–	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
925	–	M68kRegisters r;
926	–	Execute68k((uint32)&desc, &r);
927	–	}
1249		#endif
1250
1251
#	Line 943 | Line 1264 | void QuitEmulator(void)
1264
1265
1266		/*
946	–	*  Pause/resume emulator
947	–	*/
948	–
949	–	void PauseEmulator(void)
950	–	{
951	–	pthread_kill(emul_thread, SIGSTOP);
952	–	}
953	–
954	–	void ResumeEmulator(void)
955	–	{
956	–	pthread_kill(emul_thread, SIGCONT);
957	–	}
958	–
959	–
960	–	/*
1267		*  Dump 68k registers
1268		*/
1269
#	Line 985 | Line 1291 | void Dump68kRegs(M68kRegisters *r)
1291		*  Make code executable
1292		*/
1293
1294	<	void MakeExecutable(int dummy, void *start, uint32 length)
1294	>	void MakeExecutable(int dummy, uint32 start, uint32 length)
1295		{
1296	<	#if !EMULATED_PPC
991	<	if (((uint32)start >= ROM_BASE) && ((uint32)start < (ROM_BASE + ROM_SIZE)))
1296	>	if ((start >= ROMBase) && (start < (ROMBase + ROM_SIZE)))
1297		return;
993	–	flush_icache_range(start, (void *)((uint32)start + length));
994	–	#endif
995	–	}
996	–
997	–
998	–	/*
999	–	*  Patch things after system startup (gets called by disk driver accRun routine)
1000	–	*/
1001	–
1002	–	void PatchAfterStartup(void)
1003	–	{
1298		#if EMULATED_PPC
1299	<	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1299	>	FlushCodeCache(start, start + length);
1300		#else
1301	<	ExecutePPC(VideoInstallAccel);
1301	>	flush_icache_range(start, start + length);
1302		#endif
1009	–	InstallExtFS();
1303		}
1304
1305
#	Line 1014 | Line 1307 | void PatchAfterStartup(void)
1307		*  NVRAM watchdog thread (saves NVRAM every minute)
1308		*/
1309
1310	<	static void *nvram_func(void *arg)
1310	>	static void nvram_watchdog(void)
1311		{
1312	<	struct timespec req = {60, 0};  // 1 minute
1312	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1313	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1314	>	SaveXPRAM();
1315	>	}
1316	>	}
1317
1318	<	for (;;) {
1319	<	pthread_testcancel();
1320	<	nanosleep(&req, NULL);
1321	<	pthread_testcancel();
1322	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1323	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1027	<	SaveXPRAM();
1028	<	}
1318	>	static void *nvram_func(void *arg)
1319	>	{
1320	>	while (!nvram_thread_cancel) {
1321	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1322	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1323	>	nvram_watchdog();
1324		}
1325		return NULL;
1326		}
#	Line 1038 | Line 1333 | static void *nvram_func(void *arg)
1333		static void *tick_func(void *arg)
1334		{
1335		int tick_counter = 0;
1336	<	struct timespec req = {0, 16625000};
1336	>	uint64 start = GetTicks_usec();
1337	>	int64 ticks = 0;
1338	>	uint64 next = GetTicks_usec();
1339
1340	<	for (;;) {
1340	>	while (!tick_thread_cancel) {
1341
1342		// Wait
1343	<	nanosleep(&req, NULL);
1343	>	next += 16625;
1344	>	int64 delay = next - GetTicks_usec();
1345	>	if (delay > 0)
1346	>	Delay_usec(delay);
1347	>	else if (delay < -16625)
1348	>	next = GetTicks_usec();
1349	>	ticks++;
1350
1351		#if !EMULATED_PPC
1352		// Did we crash?
1353		if (emul_thread_fatal) {
1354
1355		// Yes, dump registers
1356	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1356	>	sigregs *r = &sigsegv_regs;
1357		char str[256];
1358	<	sprintf(str, "SIGSEGV\n"
1358	>	if (crash_reason == NULL)
1359	>	crash_reason = "SIGSEGV";
1360	>	sprintf(str, "%s\n"
1361		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1362		"  xer %08lx     cr %08lx  \n"
1363		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1063 | Line 1368 | static void *tick_func(void *arg)
1368		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1369		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1370		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1371	+	crash_reason,
1372		r->nip, r->link, r->ctr, r->msr,
1373		r->xer, r->ccr,
1374		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1098 | Line 1404 | static void *tick_func(void *arg)
1404		TriggerInterrupt();
1405		}
1406		}
1407	+
1408	+	uint64 end = GetTicks_usec();
1409	+	D(bug("%lld ticks in %lld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1410		return NULL;
1411		}
1412
#	Line 1108 | Line 1417 | static void *tick_func(void *arg)
1417
1418		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1419		{
1420	<	// nothing to do
1420	>	#ifdef HAVE_PTHREADS
1421	>	pthread_attr_init(attr);
1422	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1423	>	// Some of these only work for superuser
1424	>	if (geteuid() == 0) {
1425	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1426	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1427	>	struct sched_param fifo_param;
1428	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1429	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1430	>	priority);
1431	>	pthread_attr_setschedparam(attr, &fifo_param);
1432	>	}
1433	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1434	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1435	>	// If system scope is not available (eg. we're not running
1436	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1437	>	// scope.  It exposes pthread scheduling to the kernel,
1438	>	// without setting realtime priority.
1439	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1440	>	#endif
1441	>	}
1442	>	#endif
1443	>	#endif
1444		}
1445
1446
#	Line 1124 | Line 1456 | struct B2_mutex {
1456		pthread_mutexattr_init(&attr);
1457		// Initialize the mutex for priority inheritance --
1458		// required for accurate timing.
1459	<	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1459	>	#if defined(HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL) && !defined(__CYGWIN__)
1460		pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1461		#endif
1462		#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
#	Line 1195 | Line 1527 | void B2_delete_mutex(B2_mutex *mutex)
1527		*  Trigger signal USR2 from another thread
1528		*/
1529
1530	<	#if !EMULATED_PPC || ASYNC_IRQ
1530	>	#if !EMULATED_PPC
1531		void TriggerInterrupt(void)
1532		{
1533	<	if (ready_for_signals)
1533	>	if (ready_for_signals) {
1534	>	idle_resume();
1535		pthread_kill(emul_thread, SIGUSR2);
1536	+	}
1537		}
1538		#endif
1539
#	Line 1227 | Line 1561 | void ClearInterruptFlag(uint32 flag)
1561
1562		void DisableInterrupt(void)
1563		{
1564	+	#if EMULATED_PPC
1565	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1566	+	#else
1567		atomic_add((int *)XLM_IRQ_NEST, 1);
1568	+	#endif
1569		}
1570
1571
#	Line 1237 | Line 1575 | void DisableInterrupt(void)
1575
1576		void EnableInterrupt(void)
1577		{
1578	+	#if EMULATED_PPC
1579	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1580	+	#else
1581		atomic_add((int *)XLM_IRQ_NEST, -1);
1582	+	#endif
1583		}
1584
1585
#	Line 1245 | Line 1587 | void EnableInterrupt(void)
1587		*  USR2 handler
1588		*/
1589
1590	<	#if EMULATED_PPC
1591	<	static void sigusr2_handler(int sig)
1590	>	#if !EMULATED_PPC
1591	>	void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1592		{
1593	<	#if ASYNC_IRQ
1594	<	extern void HandleInterrupt(void);
1595	<	HandleInterrupt();
1593	>	machine_regs *r = MACHINE_REGISTERS(scp);
1594	>
1595	>	#ifdef SYSTEM_CLOBBERS_R2
1596	>	// Restore pointer to Thread Local Storage
1597	>	set_r2(TOC);
1598	>	#endif
1599	>	#ifdef SYSTEM_CLOBBERS_R13
1600	>	// Restore pointer to .sdata section
1601	>	set_r13(R13);
1602	>	#endif
1603	>
1604	>	#ifdef USE_SDL_VIDEO
1605	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1606	>	SDL_PumpEvents();
1607		#endif
1255	–	}
1256	–	#else
1257	–	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1258	–	{
1259	–	pt_regs *r = sc->regs;
1608
1609		// Do nothing if interrupts are disabled
1610		if (*(int32 *)XLM_IRQ_NEST > 0)
#	Line 1270 | Line 1618 | static void sigusr2_handler(int sig, sig
1618		case MODE_68K:
1619		// 68k emulator active, trigger 68k interrupt level 1
1620		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1621	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1621	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1622		break;
1623
1624		#if INTERRUPTS_IN_NATIVE_MODE
1625		case MODE_NATIVE:
1626		// 68k emulator inactive, in nanokernel?
1627	<	if (r->gpr[1] != KernelDataAddr) {
1627	>	if (r->gpr(1) != KernelDataAddr) {
1628	>
1629	>	// Set extra stack for SIGSEGV handler
1630	>	sigaltstack(&extra_stack, NULL);
1631	>
1632		// Prepare for 68k interrupt level 1
1633		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1634		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1635
1636		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1637	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1637	>	DisableInterrupt();
1638		if (ROMType == ROMTYPE_NEWWORLD)
1639	<	ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1639	>	ppc_interrupt(ROMBase + 0x312b1c, KernelDataAddr);
1640		else
1641	<	ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1641	>	ppc_interrupt(ROMBase + 0x312a3c, KernelDataAddr);
1642	>
1643	>	// Reset normal stack
1644	>	sigaltstack(&sig_stack, NULL);
1645		}
1646		break;
1647		#endif
#	Line 1297 | Line 1652 | static void sigusr2_handler(int sig, sig
1652		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1653
1654		// Set extra stack for SIGSEGV handler
1655	<	struct sigaltstack new_stack;
1301	<	new_stack.ss_sp = extra_stack;
1302	<	new_stack.ss_flags = 0;
1303	<	new_stack.ss_size = SIG_STACK_SIZE;
1304	<	sigaltstack(&new_stack, NULL);
1655	>	sigaltstack(&extra_stack, NULL);
1656		#if 1
1657		// Execute full 68k interrupt routine
1658		M68kRegisters r;
#	Line 1323 | Line 1674 | static void sigusr2_handler(int sig, sig
1674		if (InterruptFlags & INTFLAG_VIA) {
1675		ClearInterruptFlag(INTFLAG_VIA);
1676		ADBInterrupt();
1677	<	ExecutePPC(VideoVBL);
1677	>	ExecuteNative(NATIVE_VIDEO_VBL);
1678		}
1679		}
1680		#endif
1681	<	// Reset normal signal stack
1682	<	new_stack.ss_sp = sig_stack;
1332	<	new_stack.ss_flags = 0;
1333	<	new_stack.ss_size = SIG_STACK_SIZE;
1334	<	sigaltstack(&new_stack, NULL);
1681	>	// Reset normal stack
1682	>	sigaltstack(&sig_stack, NULL);
1683		}
1684		break;
1685		#endif
#	Line 1345 | Line 1693 | static void sigusr2_handler(int sig, sig
1693		*/
1694
1695		#if !EMULATED_PPC
1696	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1696	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1697		{
1698	<	pt_regs *r = sc->regs;
1698	>	machine_regs *r = MACHINE_REGISTERS(scp);
1699
1700		// Get effective address
1701	<	uint32 addr = r->dar;
1701	>	uint32 addr = r->dar();
1702
1703	+	#ifdef SYSTEM_CLOBBERS_R2
1704	+	// Restore pointer to Thread Local Storage
1705	+	set_r2(TOC);
1706	+	#endif
1707	+	#ifdef SYSTEM_CLOBBERS_R13
1708	+	// Restore pointer to .sdata section
1709	+	set_r13(R13);
1710	+	#endif
1711	+
1712		#if ENABLE_VOSF
1713	<	// Handle screen fault.
1714	<	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1715	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1713	>	// Handle screen fault
1714	>	#if SIGSEGV_CHECK_VERSION(1,0,0)
1715	>	sigsegv_info_t si;
1716	>	si.addr = (sigsegv_address_t)addr;
1717	>	si.pc = (sigsegv_address_t)r->pc();
1718	>	#endif
1719	>	extern bool Screen_fault_handler(sigsegv_info_t *sip);
1720	>	if (Screen_fault_handler(&si))
1721		return;
1722		#endif
1723
1724		num_segv++;
1725
1726	<	// Fault in Mac ROM or RAM?
1727	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1726	>	// Fault in Mac ROM or RAM or DR Cache?
1727	>	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));
1728		if (mac_fault) {
1729
1730		// "VM settings" during MacOS 8 installation
1731	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1732	<	r->nip += 4;
1733	<	r->gpr[8] = 0;
1731	>	if (r->pc() == ROMBase + 0x488160 && r->gpr(20) == 0xf8000000) {
1732	>	r->pc() += 4;
1733	>	r->gpr(8) = 0;
1734		return;
1735
1736		// MacOS 8.5 installation
1737	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1738	<	r->nip += 4;
1739	<	r->gpr[8] = 0;
1737	>	} else if (r->pc() == ROMBase + 0x488140 && r->gpr(16) == 0xf8000000) {
1738	>	r->pc() += 4;
1739	>	r->gpr(8) = 0;
1740		return;
1741
1742		// MacOS 8 serial drivers on startup
1743	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1744	<	r->nip += 4;
1745	<	r->gpr[8] = 0;
1743	>	} else if (r->pc() == ROMBase + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1744	>	r->pc() += 4;
1745	>	r->gpr(8) = 0;
1746		return;
1747
1748		// MacOS 8.1 serial drivers on startup
1749	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1750	<	r->nip += 4;
1749	>	} else if (r->pc() == ROMBase + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1750	>	r->pc() += 4;
1751		return;
1752	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1753	<	r->nip += 4;
1752	>	} else if (r->pc() == ROMBase + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1753	>	r->pc() += 4;
1754	>	return;
1755	>
1756	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1757	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1758	>	r->pc() += 4;
1759	>	return;
1760	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1761	>	r->pc() += 4;
1762		return;
1763		}
1764
1765		// Get opcode and divide into fields
1766	<	uint32 opcode = *((uint32 *)r->nip);
1766	>	uint32 opcode = *((uint32 *)r->pc());
1767		uint32 primop = opcode >> 26;
1768		uint32 exop = (opcode >> 1) & 0x3ff;
1769		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1482 | Line 1852 | static void sigsegv_handler(int sig, sig
1852		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1853		case 45:        // sthu
1854		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1855	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1856	+	case 46:        // lmw
1857	+	if ((addr % 4) != 0) {
1858	+	uint32 ea = addr;
1859	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1860	+	for (int i = rd; i <= 31; i++) {
1861	+	r->gpr(i) = ReadMacInt32(ea);
1862	+	ea += 4;
1863	+	}
1864	+	r->pc() += 4;
1865	+	goto rti;
1866	+	}
1867	+	break;
1868	+	case 47:        // stmw
1869	+	if ((addr % 4) != 0) {
1870	+	uint32 ea = addr;
1871	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1872	+	for (int i = rd; i <= 31; i++) {
1873	+	WriteMacInt32(ea, r->gpr(i));
1874	+	ea += 4;
1875	+	}
1876	+	r->pc() += 4;
1877	+	goto rti;
1878	+	}
1879	+	break;
1880	+	#endif
1881		}
1882
1883	<	// Ignore ROM writes
1884	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1885	<	//                      D(bug("WARNING: %s write access to ROM at %08lx, pc %08lx\n", transfer_size == SIZE_BYTE ? "Byte" : transfer_size == SIZE_HALFWORD ? "Halfword" : "Word", addr, r->nip));
1883	>	// Ignore ROM writes (including to the zero page, which is read-only)
1884	>	if (transfer_type == TYPE_STORE &&
1885	>	((addr >= ROMBase && addr < ROMBase + ROM_SIZE) ||
1886	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1887	>	//                      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()));
1888		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1889	<	r->gpr[ra] = addr;
1890	<	r->nip += 4;
1889	>	r->gpr(ra) = addr;
1890	>	r->pc() += 4;
1891		goto rti;
1892		}
1893
1894		// Ignore illegal memory accesses?
1895		if (PrefsFindBool("ignoresegv")) {
1896		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1897	<	r->gpr[ra] = addr;
1897	>	r->gpr(ra) = addr;
1898		if (transfer_type == TYPE_LOAD)
1899	<	r->gpr[rd] = 0;
1900	<	r->nip += 4;
1899	>	r->gpr(rd) = 0;
1900	>	r->pc() += 4;
1901		goto rti;
1902		}
1903
#	Line 1507 | Line 1905 | static void sigsegv_handler(int sig, sig
1905		if (!PrefsFindBool("nogui")) {
1906		char str[256];
1907		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1908	<	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]);
1908	>	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));
1909		else
1910	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1910	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1911		ErrorAlert(str);
1912		QuitEmulator();
1913		return;
#	Line 1517 | Line 1915 | static void sigsegv_handler(int sig, sig
1915		}
1916
1917		// For all other errors, jump into debugger (sort of...)
1918	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1919		if (!ready_for_signals) {
1920	<	printf("SIGSEGV\n");
1921	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1920	>	printf("%s\n");
1921	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1922		printf(
1923		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1924		"  xer %08lx     cr %08lx  \n"
#	Line 1531 | Line 1930 | static void sigsegv_handler(int sig, sig
1930		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1931		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1932		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1933	<	r->nip, r->link, r->ctr, r->msr,
1934	<	r->xer, r->ccr,
1935	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1936	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1937	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1938	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1939	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1940	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1941	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1942	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1933	>	crash_reason,
1934	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1935	>	r->xer(), r->cr(),
1936	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1937	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1938	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1939	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1940	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1941	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1942	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1943	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1944		exit(1);
1945		QuitEmulator();
1946		return;
1947		} else {
1948		// We crashed. Save registers, tell tick thread and loop forever
1949	<	sigsegv_regs = *(sigregs *)r;
1949	>	build_sigregs(&sigsegv_regs, r);
1950		emul_thread_fatal = true;
1951		for (;;) ;
1952		}
#	Line 1558 | Line 1958 | rti:;
1958		*  SIGILL handler
1959		*/
1960
1961	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1961	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
1962		{
1963	<	pt_regs *r = sc->regs;
1963	>	machine_regs *r = MACHINE_REGISTERS(scp);
1964		char str[256];
1965
1966	+	#ifdef SYSTEM_CLOBBERS_R2
1967	+	// Restore pointer to Thread Local Storage
1968	+	set_r2(TOC);
1969	+	#endif
1970	+	#ifdef SYSTEM_CLOBBERS_R13
1971	+	// Restore pointer to .sdata section
1972	+	set_r13(R13);
1973	+	#endif
1974	+
1975		// Fault in Mac ROM or RAM?
1976	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1976	>	bool mac_fault = (r->pc() >= ROMBase) && (r->pc() < (ROMBase + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1977		if (mac_fault) {
1978
1979		// Get opcode and divide into fields
1980	<	uint32 opcode = *((uint32 *)r->nip);
1980	>	uint32 opcode = *((uint32 *)r->pc());
1981		uint32 primop = opcode >> 26;
1982		uint32 exop = (opcode >> 1) & 0x3ff;
1983		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1579 | Line 1988 | static void sigill_handler(int sig, sigc
1988		switch (primop) {
1989		case 9:         // POWER instructions
1990		case 22:
1991	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
1991	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
1992		ErrorAlert(str);
1993		QuitEmulator();
1994		return;
#	Line 1587 | Line 1996 | power_inst:            sprintf(str, GetString(STR_
1996		case 31:
1997		switch (exop) {
1998		case 83:        // mfmsr
1999	<	r->gpr[rd] = 0xf072;
2000	<	r->nip += 4;
1999	>	r->gpr(rd) = 0xf072;
2000	>	r->pc() += 4;
2001		goto rti;
2002
2003		case 210:       // mtsr
2004		case 242:       // mtsrin
2005		case 306:       // tlbie
2006	<	r->nip += 4;
2006	>	r->pc() += 4;
2007		goto rti;
2008
2009		case 339: {     // mfspr
#	Line 1610 | Line 2019 | power_inst:            sprintf(str, GetString(STR_
2019		case 957:       // PMC3
2020		case 958:       // PMC4
2021		case 959:       // SDA
2022	<	r->nip += 4;
2022	>	r->pc() += 4;
2023		goto rti;
2024		case 25:        // SDR1
2025	<	r->gpr[rd] = 0xdead001f;
2026	<	r->nip += 4;
2025	>	r->gpr(rd) = 0xdead001f;
2026	>	r->pc() += 4;
2027		goto rti;
2028		case 287:       // PVR
2029	<	r->gpr[rd] = PVR;
2030	<	r->nip += 4;
2029	>	r->gpr(rd) = PVR;
2030	>	r->pc() += 4;
2031		goto rti;
2032		}
2033		break;
#	Line 1654 | Line 2063 | power_inst:            sprintf(str, GetString(STR_
2063		case 957:       // PMC3
2064		case 958:       // PMC4
2065		case 959:       // SDA
2066	<	r->nip += 4;
2066	>	r->pc() += 4;
2067		goto rti;
2068		}
2069		break;
#	Line 1673 | Line 2082 | power_inst:            sprintf(str, GetString(STR_
2082
2083		// In GUI mode, show error alert
2084		if (!PrefsFindBool("nogui")) {
2085	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
2085	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
2086		ErrorAlert(str);
2087		QuitEmulator();
2088		return;
#	Line 1681 | Line 2090 | power_inst:            sprintf(str, GetString(STR_
2090		}
2091
2092		// For all other errors, jump into debugger (sort of...)
2093	+	crash_reason = "SIGILL";
2094		if (!ready_for_signals) {
2095	<	printf("SIGILL\n");
2096	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
2095	>	printf("%s\n");
2096	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
2097		printf(
2098		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
2099		"  xer %08lx     cr %08lx  \n"
#	Line 1695 | Line 2105 | power_inst:            sprintf(str, GetString(STR_
2105		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
2106		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
2107		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
2108	<	r->nip, r->link, r->ctr, r->msr,
2109	<	r->xer, r->ccr,
2110	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2111	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2112	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2113	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2114	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2115	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2116	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2117	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2108	>	crash_reason,
2109	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2110	>	r->xer(), r->cr(),
2111	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2112	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2113	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2114	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2115	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2116	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2117	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2118	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2119		exit(1);
2120		QuitEmulator();
2121		return;
2122		} else {
2123		// We crashed. Save registers, tell tick thread and loop forever
2124	<	sigsegv_regs = *(sigregs *)r;
2124	>	build_sigregs(&sigsegv_regs, r);
2125		emul_thread_fatal = true;
2126		for (;;) ;
2127		}
#	Line 1720 | Line 2131 | rti:;
2131
2132
2133		/*
2134	+	*  Helpers to share 32-bit addressable data with MacOS
2135	+	*/
2136	+
2137	+	bool SheepMem::Init(void)
2138	+	{
2139	+	// Size of a native page
2140	+	page_size = getpagesize();
2141	+
2142	+	// Allocate SheepShaver globals
2143	+	proc = base;
2144	+	if (vm_mac_acquire_fixed(base, size) < 0)
2145	+	return false;
2146	+
2147	+	// Allocate page with all bits set to 0, right in the middle
2148	+	// This is also used to catch undesired overlaps between proc and data areas
2149	+	zero_page = proc + (size / 2);
2150	+	Mac_memset(zero_page, 0, page_size);
2151	+	if (vm_protect(Mac2HostAddr(zero_page), page_size, VM_PAGE_READ) < 0)
2152	+	return false;
2153	+
2154	+	#if EMULATED_PPC
2155	+	// Allocate alternate stack for PowerPC interrupt routine
2156	+	sig_stack = base + size;
2157	+	if (vm_mac_acquire_fixed(sig_stack, SIG_STACK_SIZE) < 0)
2158	+	return false;
2159	+	#endif
2160	+
2161	+	data = base + size;
2162	+	return true;
2163	+	}
2164	+
2165	+	void SheepMem::Exit(void)
2166	+	{
2167	+	if (data) {
2168	+	// Delete SheepShaver globals
2169	+	vm_mac_release(base, size);
2170	+
2171	+	#if EMULATED_PPC
2172	+	// Delete alternate stack for PowerPC interrupt routine
2173	+	vm_mac_release(sig_stack, SIG_STACK_SIZE);
2174	+	#endif
2175	+	}
2176	+	}
2177	+
2178	+
2179	+	/*
2180		*  Display alert
2181		*/
2182
#	Line 1768 | Line 2225 | void display_alert(int title_id, int pre
2225
2226		void ErrorAlert(const char *text)
2227		{
2228	<	#ifdef ENABLE_GTK
2228	>	if (gui_connection) {
2229	>	if (rpc_method_invoke(gui_connection, RPC_METHOD_ERROR_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2230	>	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2231	>	return;
2232	>	}
2233	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2234		if (PrefsFindBool("nogui") || x_display == NULL) {
2235		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2236		return;
#	Line 1787 | Line 2249 | void ErrorAlert(const char *text)
2249
2250		void WarningAlert(const char *text)
2251		{
2252	<	#ifdef ENABLE_GTK
2252	>	if (gui_connection) {
2253	>	if (rpc_method_invoke(gui_connection, RPC_METHOD_WARNING_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2254	>	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2255	>	return;
2256	>	}
2257	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2258		if (PrefsFindBool("nogui") || x_display == NULL) {
2259		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2260		return;

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