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

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.13 by gbeauche, 2003-11-03T21:28:25Z vs.
Revision 1.103 by asvitkine, 2012-03-01T04:25:10Z

#	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	+	#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
223		static bool ready_for_signals = false;          // Handler installed, signals can be sent
207	–	static int64 num_segv = 0;                                      // Number of handled SEGV signals
224
225	+	#if EMULATED_PPC
226	+	static uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
227	+	#else
228		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
210	–	#if !EMULATED_PPC
229		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
230		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
231	<	static void *sig_stack = NULL;                          // Stack for signal handlers
232	<	static void *extra_stack = NULL;                        // Stack for SIGSEGV inside interrupt handler
231	>	static stack_t sig_stack;                                       // Stack for signal handlers
232	>	static stack_t extra_stack;                                     // Stack for SIGSEGV inside interrupt handler
233		static bool emul_thread_fatal = false;          // Flag: MacOS thread crashed, tick thread shall dump debug output
234		static sigregs sigsegv_regs;                            // Register dump when crashed
235	+	static const char *crash_reason = NULL;         // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
236		#endif
237
238	+	static rpc_connection_t *gui_connection = NULL; // RPC connection to the GUI
239	+	static const char *gui_connection_path = NULL;  // GUI connection identifier
240	+
241	+	uint32  SheepMem::page_size;                            // Size of a native page
242	+	uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
243	+	uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
244	+	uintptr SheepMem::proc;                                         // Bottom address of SheepShave procedures
245	+	uintptr SheepMem::data;                                         // Top of SheepShaver data (stack like storage)
246	+
247
248		// Prototypes
249	+	static bool kernel_data_init(void);
250	+	static void kernel_data_exit(void);
251		static void Quit(void);
252		static void *emul_func(void *arg);
253		static void *nvram_func(void *arg);
254		static void *tick_func(void *arg);
255		#if EMULATED_PPC
226	–	static void sigusr2_handler(int sig);
256		extern void emul_ppc(uint32 start);
257		extern void init_emul_ppc(void);
258		extern void exit_emul_ppc(void);
259	+	sigsegv_return_t sigsegv_handler(sigsegv_info_t *sip);
260		#else
261	<	static void sigusr2_handler(int sig, sigcontext_struct *sc);
262	<	static void sigsegv_handler(int sig, sigcontext_struct *sc);
263	<	static void sigill_handler(int sig, sigcontext_struct *sc);
261	>	extern "C" void sigusr2_handler_init(int sig, siginfo_t *sip, void *scp);
262	>	extern "C" void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
263	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp);
264	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp);
265		#endif
266
267
268		// From asm_linux.S
269		#if !EMULATED_PPC
239	–	extern "C" void *get_toc(void);
270		extern "C" void *get_sp(void);
271	<	extern "C" void flush_icache_range(void *start, void *end);
271	>	extern "C" void *get_r2(void);
272	>	extern "C" void set_r2(void *);
273	>	extern "C" void *get_r13(void);
274	>	extern "C" void set_r13(void *);
275	>	extern "C" void flush_icache_range(uint32 start, uint32 end);
276		extern "C" void jump_to_rom(uint32 entry, uint32 context);
277		extern "C" void quit_emulator(void);
278		extern "C" void execute_68k(uint32 pc, M68kRegisters *r);
#	Line 252 | Line 286 | extern void paranoia_check(void);
286
287		#if EMULATED_PPC
288		/*
289	+	*  Return signal stack base
290	+	*/
291	+
292	+	uintptr SignalStackBase(void)
293	+	{
294	+	return sig_stack + SIG_STACK_SIZE;
295	+	}
296	+
297	+
298	+	/*
299		*  Atomic operations
300		*/
301
#	Line 292 | Line 336 | int atomic_or(int *var, int v)
336
337
338		/*
339	+	*  Memory management helpers
340	+	*/
341	+
342	+	static inline uint8 *vm_mac_acquire(uint32 size)
343	+	{
344	+	return (uint8 *)vm_acquire(size);
345	+	}
346	+
347	+	static inline int vm_mac_acquire_fixed(uint32 addr, uint32 size)
348	+	{
349	+	return vm_acquire_fixed(Mac2HostAddr(addr), size);
350	+	}
351	+
352	+	static inline int vm_mac_release(uint32 addr, uint32 size)
353	+	{
354	+	return vm_release(Mac2HostAddr(addr), size);
355	+	}
356	+
357	+
358	+	/*
359		*  Main program
360		*/
361
#	Line 304 | Line 368 | static void usage(const char *prg_name)
368		exit(0);
369		}
370
371	<	int main(int argc, char **argv)
371	>	static bool valid_vmdir(const char *path)
372		{
373	<	char str[256];
374	<	uint32 *boot_globs;
375	<	int16 i16;
376	<	int rom_fd;
373	>	const int suffix_len = sizeof(".sheepvm") - 1;
374	>	int len = strlen(path);
375	>	if (len && path[len - 1] == '/') // to support both ".sheepvm" and ".sheepvm/"
376	>	len--;
377	>	if (len > suffix_len && !strncmp(path + len - suffix_len, ".sheepvm", suffix_len)) {
378	>	struct stat d;
379	>	if (!stat(path, &d) && S_ISDIR(d.st_mode)) {
380	>	return true;
381	>	}
382	>	}
383	>	return false;
384	>	}
385	>
386	>	static void get_system_info(void)
387	>	{
388	>	#if !EMULATED_PPC
389		FILE *proc_file;
390	<	const char *rom_path;
390	>	#endif
391	>
392	>	PVR = 0x00040000;                       // Default: 604
393	>	CPUClockSpeed = 100000000;      // Default: 100MHz
394	>	BusClockSpeed = 100000000;      // Default: 100MHz
395	>	TimebaseSpeed =  25000000;      // Default:  25MHz
396	>
397	>	#if EMULATED_PPC
398	>	PVR = 0x000c0000;                       // Default: 7400 (with AltiVec)
399	>	#elif defined(__APPLE__) && defined(__MACH__)
400	>	proc_file = popen("ioreg -c IOPlatformDevice", "r");
401	>	if (proc_file) {
402	>	char line[256];
403	>	bool powerpc_node = false;
404	>	while (fgets(line, sizeof(line) - 1, proc_file)) {
405	>	// Read line
406	>	int len = strlen(line);
407	>	if (len == 0)
408	>	continue;
409	>	line[len - 1] = 0;
410	>
411	>	// Parse line
412	>	if (strstr(line, "o PowerPC,"))
413	>	powerpc_node = true;
414	>	else if (powerpc_node) {
415	>	uint32 value;
416	>	char head[256];
417	>	if (sscanf(line, "%[ |]\"cpu-version\" = <%x>", head, &value) == 2)
418	>	PVR = value;
419	>	else if (sscanf(line, "%[ |]\"clock-frequency\" = <%x>", head, &value) == 2)
420	>	CPUClockSpeed = value;
421	>	else if (sscanf(line, "%[ |]\"bus-frequency\" = <%x>", head, &value) == 2)
422	>	BusClockSpeed = value;
423	>	else if (sscanf(line, "%[ |]\"timebase-frequency\" = <%x>", head, &value) == 2)
424	>	TimebaseSpeed = value;
425	>	else if (strchr(line, '}'))
426	>	powerpc_node = false;
427	>	}
428	>	}
429	>	fclose(proc_file);
430	>	} else {
431	>	char str[256];
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	>	char str[256];
530	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
531	>	WarningAlert(str);
532	>	}
533	>
534	>	// Get actual bus frequency
535	>	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
536	>	if (proc_file) {
537	>	union { uint8 b[4]; uint32 l; } value;
538	>	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
539	>	BusClockSpeed = value.l;
540	>	fclose(proc_file);
541	>	}
542	>
543	>	// Get actual timebase frequency
544	>	TimebaseSpeed = BusClockSpeed / 4;
545	>	DIR *cpus_dir;
546	>	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
547	>	struct dirent *cpu_entry;
548	>	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
549	>	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
550	>	char timebase_freq_node[256];
551	>	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
552	>	proc_file = fopen(timebase_freq_node, "r");
553	>	if (proc_file) {
554	>	union { uint8 b[4]; uint32 l; } value;
555	>	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
556	>	TimebaseSpeed = value.l;
557	>	fclose(proc_file);
558	>	}
559	>	}
560	>	}
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	<	time_t now, expire;
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	>	#ifdef USE_SDL
672	>	static bool init_sdl()
673	>	{
674	>	int sdl_flags = 0;
675	>	#ifdef USE_SDL_VIDEO
676	>	sdl_flags |= SDL_INIT_VIDEO;
677	>	#endif
678	>	#ifdef USE_SDL_AUDIO
679	>	sdl_flags |= SDL_INIT_AUDIO;
680	>	#endif
681	>	assert(sdl_flags != 0);
682	>
683	>	#ifdef USE_SDL_VIDEO
684	>	// Don't let SDL block the screensaver
685	>	setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", TRUE);
686	>
687	>	// Make SDL pass through command-clicks and option-clicks unaltered
688	>	setenv("SDL_HAS3BUTTONMOUSE", "1", TRUE);
689	>	#endif
690	>
691	>	if (SDL_Init(sdl_flags) == -1) {
692	>	char str[256];
693	>	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
694	>	ErrorAlert(str);
695	>	return false;
696	>	}
697	>	atexit(SDL_Quit);
698	>
699	>	// Don't let SDL catch SIGINT and SIGTERM signals
700	>	signal(SIGINT, SIG_DFL);
701	>	signal(SIGTERM, SIG_DFL);
702	>	return true;
703	>	}
704	>	#endif
705	>
706	>	int main(int argc, char **argv)
707	>	{
708	>	char str[256];
709	>	bool memory_mapped_from_zero, ram_rom_areas_contiguous;
710	>	const char *vmdir = NULL;
711
712		// Initialize variables
713		RAMBase = 0;
#	Line 325 | Line 718 | int main(int argc, char **argv)
718		printf(" %s\n", GetString(STR_ABOUT_TEXT2));
719
720		#if !EMULATED_PPC
721	+	#ifdef SYSTEM_CLOBBERS_R2
722		// Get TOC pointer
723	<	TOC = get_toc();
723	>	TOC = get_r2();
724	>	#endif
725	>	#ifdef SYSTEM_CLOBBERS_R13
726	>	// Get r13 register
727	>	R13 = get_r13();
728		#endif
331	–
332	–	#ifdef ENABLE_GTK
333	–	// Init GTK
334	–	gtk_set_locale();
335	–	gtk_init(&argc, &argv);
729		#endif
337	–
338	–	// Read preferences
339	–	PrefsInit(argc, argv);
730
731		// Parse command line arguments
732		for (int i=1; i<argc; i++) {
733		if (strcmp(argv[i], "--help") == 0) {
734		usage(argv[0]);
735	+	#ifndef USE_SDL_VIDEO
736		} else if (strcmp(argv[i], "--display") == 0) {
737		i++;
738		if (i < argc)
739		x_display_name = strdup(argv[i]);
740	<	} else if (argv[i][0] == '-') {
740	>	#endif
741	>	} else if (strcmp(argv[i], "--gui-connection") == 0) {
742	>	argv[i++] = NULL;
743	>	if (i < argc) {
744	>	gui_connection_path = argv[i];
745	>	argv[i] = NULL;
746	>	}
747	>	} else if (valid_vmdir(argv[i])) {
748	>	vmdir = argv[i];
749	>	argv[i] = NULL;
750	>	printf("Using %s as vmdir.\n", vmdir);
751	>	if (chdir(vmdir)) {
752	>	printf("Failed to chdir to %s. Good bye.", vmdir);
753	>	exit(1);
754	>	}
755	>	break;
756	>	}
757	>	}
758	>
759	>	// Remove processed arguments
760	>	for (int i=1; i<argc; i++) {
761	>	int k;
762	>	for (k=i; k<argc; k++)
763	>	if (argv[k] != NULL)
764	>	break;
765	>	if (k > i) {
766	>	k -= i;
767	>	for (int j=i+k; j<argc; j++)
768	>	argv[j-k] = argv[j];
769	>	argc -= k;
770	>	}
771	>	}
772	>
773	>	// Connect to the external GUI
774	>	if (gui_connection_path) {
775	>	if ((gui_connection = rpc_init_client(gui_connection_path)) == NULL) {
776	>	fprintf(stderr, "Failed to initialize RPC client connection to the GUI\n");
777	>	return 1;
778	>	}
779	>	}
780	>
781	>	#ifdef ENABLE_GTK
782	>	if (!gui_connection) {
783	>	// Init GTK
784	>	gtk_set_locale();
785	>	gtk_init(&argc, &argv);
786	>	}
787	>	#endif
788	>
789	>	// Read preferences
790	>	PrefsInit(vmdir, argc, argv);
791	>
792	>	// Any command line arguments left?
793	>	for (int i=1; i<argc; i++) {
794	>	if (argv[i][0] == '-') {
795		fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
796		usage(argv[0]);
797		}
798		}
799
800	+	#ifdef USE_SDL
801	+	// Initialize SDL system
802	+	if (!init_sdl())
803	+	goto quit;
804	+	#endif
805	+
806	+	#ifndef USE_SDL_VIDEO
807		// Open display
808		x_display = XOpenDisplay(x_display_name);
809		if (x_display == NULL) {
#	Line 365 | Line 817 | int main(int argc, char **argv)
817		// Fork out, so we can return from fullscreen mode when things get ugly
818		XF86DGAForkApp(DefaultScreen(x_display));
819		#endif
820	+	#endif
821
822		#ifdef ENABLE_MON
823		// Initialize mon
824		mon_init();
825		#endif
826
827	<	// Get system info
828	<	PVR = 0x00040000;                       // Default: 604
829	<	CPUClockSpeed = 100000000;      // Default: 100MHz
377	<	BusClockSpeed = 100000000;      // Default: 100MHz
378	<	#if !EMULATED_PPC
379	<	proc_file = fopen("/proc/cpuinfo", "r");
380	<	if (proc_file) {
381	<	char line[256];
382	<	while(fgets(line, 255, proc_file)) {
383	<	// Read line
384	<	int len = strlen(line);
385	<	if (len == 0)
386	<	continue;
387	<	line[len-1] = 0;
827	>	// Install signal handlers
828	>	if (!install_signal_handlers())
829	>	goto quit;
830
831	<	// Parse line
832	<	int i;
833	<	char value[256];
834	<	if (sscanf(line, "cpu : %s", value) == 1) {
835	<	if (strcmp(value, "601") == 0)
394	<	PVR = 0x00010000;
395	<	else if (strcmp(value, "603") == 0)
396	<	PVR = 0x00030000;
397	<	else if (strcmp(value, "604") == 0)
398	<	PVR = 0x00040000;
399	<	else if (strcmp(value, "603e") == 0)
400	<	PVR = 0x00060000;
401	<	else if (strcmp(value, "603ev") == 0)
402	<	PVR = 0x00070000;
403	<	else if (strcmp(value, "604e") == 0)
404	<	PVR = 0x00090000;
405	<	else if (strcmp(value, "604ev5") == 0)
406	<	PVR = 0x000a0000;
407	<	else if (strcmp(value, "750") == 0)
408	<	PVR = 0x00080000;
409	<	else if (strcmp(value, "821") == 0)
410	<	PVR = 0x00320000;
411	<	else if (strcmp(value, "860") == 0)
412	<	PVR = 0x00500000;
413	<	else
414	<	printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
415	<	}
416	<	if (sscanf(line, "clock : %dMHz", &i) == 1)
417	<	CPUClockSpeed = BusClockSpeed = i * 1000000;
418	<	}
419	<	fclose(proc_file);
420	<	} else {
421	<	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
422	<	WarningAlert(str);
423	<	}
424	<	#endif
425	<	D(bug("PVR: %08x (assumed)\n", PVR));
831	>	// Initialize VM system
832	>	vm_init();
833	>
834	>	// Get system info
835	>	get_system_info();
836
837		// Init system routines
838		SysInit();
#	Line 445 | Line 855 | int main(int argc, char **argv)
855		goto quit;
856		}
857
448	–	// Create Low Memory area (0x0000..0x3000)
449	–	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
450	–	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
451	–	ErrorAlert(str);
452	–	goto quit;
453	–	}
454	–	lm_area_mapped = true;
455	–
858		// Create areas for Kernel Data
859	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
860	<	if (kernel_area == -1) {
861	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
859	>	if (!kernel_data_init())
860	>	goto quit;
861	>	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
862	>	emulator_data = &kernel_data->ed;
863	>	KernelDataAddr = KERNEL_DATA_BASE;
864	>	D(bug("Kernel Data at %p (%08x)\n", kernel_data, KERNEL_DATA_BASE));
865	>	D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
866	>
867	>	// Create area for DR Cache
868	>	if (vm_mac_acquire_fixed(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
869	>	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
870		ErrorAlert(str);
871		goto quit;
872		}
873	<	if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) {
874	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
873	>	dr_emulator_area_mapped = true;
874	>	if (vm_mac_acquire_fixed(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
875	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
876		ErrorAlert(str);
877		goto quit;
878		}
879	<	if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) {
880	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
879	>	dr_cache_area_mapped = true;
880	>	#if !EMULATED_PPC
881	>	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
882	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
883		ErrorAlert(str);
884		goto quit;
885		}
886	<	kernel_data = (KernelData *)0x68ffe000;
887	<	emulator_data = &kernel_data->ed;
888	<	KernelDataAddr = (uint32)kernel_data;
476	<	D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
886	>	#endif
887	>	DRCacheAddr = DR_CACHE_BASE;
888	>	D(bug("DR Cache at %p\n", DRCacheAddr));
889
890		// Create area for SheepShaver data
891	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
891	>	if (!SheepMem::Init()) {
892		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
893		ErrorAlert(str);
894		goto quit;
895		}
896	<	SheepStack1Base = SHEEP_BASE + 0x10000;
485	<	SheepStack2Base = SheepStack1Base + 0x10000;
486	<	SheepThunksBase = SheepStack2Base + 0x1000;
487	<	sheep_area_mapped = true;
488	<
489	<	// Create area for Mac ROM
490	<	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
491	<	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
492	<	ErrorAlert(str);
493	<	goto quit;
494	<	}
495	<	#if !EMULATED_PPC || defined(__powerpc__)
496	<	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
497	<	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
498	<	ErrorAlert(str);
499	<	goto quit;
500	<	}
501	<	#endif
502	<	rom_area_mapped = true;
503	<	D(bug("ROM area at %08x\n", ROM_BASE));
504	<
896	>
897		// Create area for Mac RAM
898		RAMSize = PrefsFindInt32("ramsize");
899		if (RAMSize < 8*1024*1024) {
900		WarningAlert(GetString(STR_SMALL_RAM_WARN));
901		RAMSize = 8*1024*1024;
902		}
903	<
904	<	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
905	<	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
906	<	ErrorAlert(str);
907	<	goto quit;
903	>	memory_mapped_from_zero = false;
904	>	ram_rom_areas_contiguous = false;
905	>	#if REAL_ADDRESSING && HAVE_LINKER_SCRIPT
906	>	if (vm_mac_acquire_fixed(0, RAMSize) == 0) {
907	>	D(bug("Could allocate RAM from 0x0000\n"));
908	>	RAMBase = 0;
909	>	RAMBaseHost = Mac2HostAddr(RAMBase);
910	>	memory_mapped_from_zero = true;
911	>	}
912	>	#endif
913	>	if (!memory_mapped_from_zero) {
914	>	#ifndef PAGEZERO_HACK
915	>	// Create Low Memory area (0x0000..0x3000)
916	>	if (vm_mac_acquire_fixed(0, 0x3000) < 0) {
917	>	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
918	>	ErrorAlert(str);
919	>	goto quit;
920	>	}
921	>	lm_area_mapped = true;
922	>	#endif
923	>	#if REAL_ADDRESSING
924	>	// Allocate RAM at any address. Since ROM must be higher than RAM, allocate the RAM
925	>	// and ROM areas contiguously, plus a little extra to allow for ROM address alignment.
926	>	RAMBaseHost = vm_mac_acquire(RAMSize + ROM_AREA_SIZE + ROM_ALIGNMENT);
927	>	if (RAMBaseHost == VM_MAP_FAILED) {
928	>	sprintf(str, GetString(STR_RAM_ROM_MMAP_ERR), strerror(errno));
929	>	ErrorAlert(str);
930	>	goto quit;
931	>	}
932	>	RAMBase = Host2MacAddr(RAMBaseHost);
933	>	ROMBase = (RAMBase + RAMSize + ROM_ALIGNMENT -1) & -ROM_ALIGNMENT;
934	>	ROMBaseHost = Mac2HostAddr(ROMBase);
935	>	ram_rom_areas_contiguous = true;
936	>	#else
937	>	if (vm_mac_acquire_fixed(RAM_BASE, RAMSize) < 0) {
938	>	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
939	>	ErrorAlert(str);
940	>	goto quit;
941	>	}
942	>	RAMBase = RAM_BASE;
943	>	RAMBaseHost = Mac2HostAddr(RAMBase);
944	>	#endif
945		}
946		#if !EMULATED_PPC
947	<	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
947	>	if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
948		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
949		ErrorAlert(str);
950		goto quit;
951		}
952		#endif
524	–	RAMBase = RAM_BASE;
953		ram_area_mapped = true;
954	<	D(bug("RAM area at %08x\n", RAMBase));
954	>	D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
955
956	<	if (RAMBase > ROM_BASE) {
957	<	ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
956	>	if (RAMBase > KernelDataAddr) {
957	>	ErrorAlert(GetString(STR_RAM_AREA_TOO_HIGH_ERR));
958		goto quit;
959		}
532	–
533	–	// Load Mac ROM
534	–	rom_path = PrefsFindString("rom");
535	–	rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
536	–	if (rom_fd < 0) {
537	–	rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME2, O_RDONLY);
538	–	if (rom_fd < 0) {
539	–	ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
540	–	goto quit;
541	–	}
542	–	}
543	–	printf(GetString(STR_READING_ROM_FILE));
544	–	rom_size = lseek(rom_fd, 0, SEEK_END);
545	–	lseek(rom_fd, 0, SEEK_SET);
546	–	rom_tmp = new uint8[ROM_SIZE];
547	–	actual = read(rom_fd, (void *)rom_tmp, ROM_SIZE);
548	–	close(rom_fd);
960
961	<	// Decode Mac ROM
962	<	if (!DecodeROM(rom_tmp, actual)) {
963	<	if (rom_size != 4*1024*1024) {
964	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
965	<	goto quit;
555	<	} else {
556	<	ErrorAlert(GetString(STR_ROM_FILE_READ_ERR));
961	>	// Create area for Mac ROM
962	>	if (!ram_rom_areas_contiguous) {
963	>	if (vm_mac_acquire_fixed(ROM_BASE, ROM_AREA_SIZE) < 0) {
964	>	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
965	>	ErrorAlert(str);
966		goto quit;
967		}
968	+	ROMBase = ROM_BASE;
969	+	ROMBaseHost = Mac2HostAddr(ROMBase);
970		}
971	<	delete[] rom_tmp;
972	<
973	<	// Load NVRAM
974	<	XPRAMInit();
975	<
976	<	// Set boot volume
977	<	i16 = PrefsFindInt32("bootdrive");
978	<	XPRAM[0x1378] = i16 >> 8;
979	<	XPRAM[0x1379] = i16 & 0xff;
569	<	i16 = PrefsFindInt32("bootdriver");
570	<	XPRAM[0x137a] = i16 >> 8;
571	<	XPRAM[0x137b] = i16 & 0xff;
572	<
573	<	// Create BootGlobs at top of Mac memory
574	<	memset((void *)(RAMBase + RAMSize - 4096), 0, 4096);
575	<	BootGlobsAddr = RAMBase + RAMSize - 0x1c;
576	<	boot_globs = (uint32 *)BootGlobsAddr;
577	<	boot_globs[-5] = htonl(RAMBase + RAMSize);      // MemTop
578	<	boot_globs[0] = htonl(RAMBase);                         // First RAM bank
579	<	boot_globs[1] = htonl(RAMSize);
580	<	boot_globs[2] = htonl((uint32)-1);                      // End of bank table
581	<
582	<	// Init drivers
583	<	SonyInit();
584	<	DiskInit();
585	<	CDROMInit();
586	<	SCSIInit();
587	<
588	<	// Init external file system
589	<	ExtFSInit();
590	<
591	<	// Init audio
592	<	AudioInit();
593	<
594	<	// Init network
595	<	EtherInit();
596	<
597	<	// Init serial ports
598	<	SerialInit();
599	<
600	<	// Init Time Manager
601	<	TimerInit();
971	>	#if !EMULATED_PPC
972	>	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
973	>	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
974	>	ErrorAlert(str);
975	>	goto quit;
976	>	}
977	>	#endif
978	>	rom_area_mapped = true;
979	>	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROMBase));
980
981	<	// Init clipboard
982	<	ClipInit();
981	>	if (RAMBase > ROMBase) {
982	>	ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
983	>	goto quit;
984	>	}
985
986	<	// Init video
987	<	if (!VideoInit())
986	>	// Load Mac ROM
987	>	if (!load_mac_rom())
988		goto quit;
989
990	<	// Install ROM patches
991	<	if (!PatchROM()) {
612	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
990	>	// Initialize everything
991	>	if (!InitAll(vmdir))
992		goto quit;
993	<	}
993	>	D(bug("Initialization complete\n"));
994
995		// Clear caches (as we loaded and patched code) and write protect ROM
996		#if !EMULATED_PPC
997	<	MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
997	>	flush_icache_range(ROMBase, ROMBase + ROM_AREA_SIZE);
998		#endif
999	<	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
621	<
622	<	// Initialize Kernel Data
623	<	memset(kernel_data, 0, sizeof(KernelData));
624	<	if (ROMType == ROMTYPE_NEWWORLD) {
625	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
626	<	static uint8 vector_lookup_tbl[128];
627	<	static uint8 vector_mask_tbl[64];
628	<	memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
629	<	memset(vector_lookup_tbl, 0, 128);
630	<	memset(vector_mask_tbl, 0, 64);
631	<	kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
632	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree);        // OF device tree base
633	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
634	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
635	<	kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
636	<	kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
637	<	kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
638	<	kernel_data->v[0xc24 >> 2] = htonl(RAMSize);
639	<	kernel_data->v[0xc30 >> 2] = htonl(RAMSize);
640	<	kernel_data->v[0xc34 >> 2] = htonl(RAMSize);
641	<	kernel_data->v[0xc38 >> 2] = htonl(0x00010020);
642	<	kernel_data->v[0xc3c >> 2] = htonl(0x00200001);
643	<	kernel_data->v[0xc40 >> 2] = htonl(0x00010000);
644	<	kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
645	<	kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
646	<	kernel_data->v[0xf60 >> 2] = htonl(PVR);
647	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
648	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
649	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
650	<	} else {
651	<	kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
652	<	kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
653	<	kernel_data->v[0xc90 >> 2] = htonl(RAMSize);
654	<	kernel_data->v[0xc94 >> 2] = htonl(RAMSize);
655	<	kernel_data->v[0xc98 >> 2] = htonl(0x00010020);
656	<	kernel_data->v[0xc9c >> 2] = htonl(0x00200001);
657	<	kernel_data->v[0xca0 >> 2] = htonl(0x00010000);
658	<	kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
659	<	kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
660	<	kernel_data->v[0xf80 >> 2] = htonl(PVR);
661	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
662	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
663	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
664	<	}
665	<
666	<	// Initialize extra low memory
667	<	D(bug("Initializing Low Memory...\n"));
668	<	memset(NULL, 0, 0x3000);
669	<	WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
670	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data);                    // For trap replacement routines
671	<	WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
672	<	WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
673	<	WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
674	<	#if EMULATED_PPC
675	<	WriteMacInt32(XLM_ETHER_INIT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_INIT));
676	<	WriteMacInt32(XLM_ETHER_TERM, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_TERM));
677	<	WriteMacInt32(XLM_ETHER_OPEN, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_OPEN));
678	<	WriteMacInt32(XLM_ETHER_CLOSE, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_CLOSE));
679	<	WriteMacInt32(XLM_ETHER_WPUT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_WPUT));
680	<	WriteMacInt32(XLM_ETHER_RSRV, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_RSRV));
681	<	WriteMacInt32(XLM_VIDEO_DOIO, POWERPC_NATIVE_OP_FUNC(NATIVE_VIDEO_DO_DRIVER_IO));
682	<	#else
683	<	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                    // TOC pointer of emulator
684	<	WriteMacInt32(XLM_ETHER_INIT, (uint32)InitStreamModule);                // DLPI ethernet driver functions
685	<	WriteMacInt32(XLM_ETHER_TERM, (uint32)TerminateStreamModule);
686	<	WriteMacInt32(XLM_ETHER_OPEN, (uint32)ether_open);
687	<	WriteMacInt32(XLM_ETHER_CLOSE, (uint32)ether_close);
688	<	WriteMacInt32(XLM_ETHER_WPUT, (uint32)ether_wput);
689	<	WriteMacInt32(XLM_ETHER_RSRV, (uint32)ether_rsrv);
690	<	WriteMacInt32(XLM_VIDEO_DOIO, (uint32)VideoDoDriverIO);
691	<	#endif
692	<	D(bug("Low Memory initialized\n"));
999	>	vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
1000
1001		// Start 60Hz thread
1002	+	tick_thread_cancel = false;
1003		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
1004		D(bug("Tick thread installed (%ld)\n", tick_thread));
1005
1006		// Start NVRAM watchdog thread
1007		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1008	+	nvram_thread_cancel = false;
1009		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
1010		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
1011
1012		#if !EMULATED_PPC
704	–	// Create and install stacks for signal handlers
705	–	sig_stack = malloc(SIG_STACK_SIZE);
706	–	D(bug("Signal stack at %p\n", sig_stack));
707	–	if (sig_stack == NULL) {
708	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
709	–	goto quit;
710	–	}
711	–	extra_stack = malloc(SIG_STACK_SIZE);
712	–	D(bug("Extra stack at %p\n", extra_stack));
713	–	if (extra_stack == NULL) {
714	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
715	–	goto quit;
716	–	}
717	–	struct sigaltstack new_stack;
718	–	new_stack.ss_sp = sig_stack;
719	–	new_stack.ss_flags = 0;
720	–	new_stack.ss_size = SIG_STACK_SIZE;
721	–	if (sigaltstack(&new_stack, NULL) < 0) {
722	–	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
723	–	ErrorAlert(str);
724	–	goto quit;
725	–	}
726	–	#endif
727	–
728	–	#if !EMULATED_PPC
729	–	// Install SIGSEGV handler
730	–	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
731	–	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
732	–	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
733	–	sigsegv_action.sa_flags = SA_ONSTACK;
734	–	sigsegv_action.sa_restorer = NULL;
735	–	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
736	–	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
737	–	ErrorAlert(str);
738	–	goto quit;
739	–	}
740	–
1013		// Install SIGILL handler
1014		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
1015		sigaddset(&sigill_action.sa_mask, SIGUSR2);
1016	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
1017	<	sigill_action.sa_flags = SA_ONSTACK;
1016	>	sigill_action.sa_sigaction = sigill_handler;
1017	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
1018	>	#ifdef HAVE_SIGNAL_SA_RESTORER
1019		sigill_action.sa_restorer = NULL;
1020	+	#endif
1021		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
1022	<	sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
1022	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
1023		ErrorAlert(str);
1024		goto quit;
1025		}
1026		#endif
1027
1028	+	#if !EMULATED_PPC
1029		// Install interrupt signal handler
1030		sigemptyset(&sigusr2_action.sa_mask);
1031	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
1032	<	sigusr2_action.sa_flags = 0;
1033	<	#if !EMULATED_PPC
759	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
760	<	#endif
1031	>	sigusr2_action.sa_sigaction = sigusr2_handler_init;
1032	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
1033	>	#ifdef HAVE_SIGNAL_SA_RESTORER
1034		sigusr2_action.sa_restorer = NULL;
1035	+	#endif
1036		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
1037	<	sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
1037	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGUSR2", strerror(errno));
1038		ErrorAlert(str);
1039		goto quit;
1040		}
1041	+	#endif
1042
1043		// Get my thread ID and execute MacOS thread function
1044		emul_thread = pthread_self();
#	Line 789 | Line 1064 | static void Quit(void)
1064
1065		// Stop 60Hz thread
1066		if (tick_thread_active) {
1067	+	tick_thread_cancel = true;
1068		pthread_cancel(tick_thread);
1069		pthread_join(tick_thread, NULL);
1070		}
1071
1072		// Stop NVRAM watchdog thread
1073		if (nvram_thread_active) {
1074	+	nvram_thread_cancel = true;
1075		pthread_cancel(nvram_thread);
1076		pthread_join(nvram_thread, NULL);
1077		}
1078
1079		#if !EMULATED_PPC
1080	<	// Uninstall SIGSEGV handler
1080	>	// Uninstall SIGSEGV and SIGBUS handlers
1081		sigemptyset(&sigsegv_action.sa_mask);
1082		sigsegv_action.sa_handler = SIG_DFL;
1083		sigsegv_action.sa_flags = 0;
1084		sigaction(SIGSEGV, &sigsegv_action, NULL);
1085	+	sigaction(SIGBUS, &sigsegv_action, NULL);
1086
1087		// Uninstall SIGILL handler
1088		sigemptyset(&sigill_action.sa_mask);
1089		sigill_action.sa_handler = SIG_DFL;
1090		sigill_action.sa_flags = 0;
1091		sigaction(SIGILL, &sigill_action, NULL);
814	–	#endif
815	–
816	–	// Save NVRAM
817	–	XPRAMExit();
818	–
819	–	// Exit clipboard
820	–	ClipExit();
821	–
822	–	// Exit Time Manager
823	–	TimerExit();
824	–
825	–	// Exit serial
826	–	SerialExit();
827	–
828	–	// Exit network
829	–	EtherExit();
830	–
831	–	// Exit audio
832	–	AudioExit();
1092
1093	<	// Exit video
1094	<	VideoExit();
1093	>	// Delete stacks for signal handlers
1094	>	if (sig_stack.ss_sp)
1095	>	free(sig_stack.ss_sp);
1096	>	if (extra_stack.ss_sp)
1097	>	free(extra_stack.ss_sp);
1098	>	#endif
1099
1100	<	// Exit external file system
1101	<	ExtFSExit();
1100	>	// Deinitialize everything
1101	>	ExitAll();
1102
1103	<	// Exit drivers
1104	<	SCSIExit();
842	<	CDROMExit();
843	<	DiskExit();
844	<	SonyExit();
1103	>	// Delete SheepShaver globals
1104	>	SheepMem::Exit();
1105
1106		// Delete RAM area
1107		if (ram_area_mapped)
1108	<	vm_release((char *)RAM_BASE, RAMSize);
1108	>	vm_mac_release(RAMBase, RAMSize);
1109
1110		// Delete ROM area
1111		if (rom_area_mapped)
1112	<	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
1112	>	vm_mac_release(ROMBase, ROM_AREA_SIZE);
1113
1114	<	// Delete Kernel Data area
1115	<	if (kernel_area >= 0) {
1116	<	shmdt((void *)KERNEL_DATA_BASE);
1117	<	shmdt((void *)KERNEL_DATA2_BASE);
1118	<	shmctl(kernel_area, IPC_RMID, NULL);
859	<	}
1114	>	// Delete DR cache areas
1115	>	if (dr_emulator_area_mapped)
1116	>	vm_mac_release(DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
1117	>	if (dr_cache_area_mapped)
1118	>	vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
1119
1120		// Delete Low Memory area
1121		if (lm_area_mapped)
1122	<	munmap((char *)0x0000, 0x3000);
1122	>	vm_mac_release(0, 0x3000);
1123
1124		// Close /dev/zero
1125		if (zero_fd > 0)
#	Line 878 | Line 1137 | static void Quit(void)
1137		#endif
1138
1139		// Close X11 server connection
1140	+	#ifndef USE_SDL_VIDEO
1141		if (x_display)
1142		XCloseDisplay(x_display);
1143	+	#endif
1144	+
1145	+	// Notify GUI we are about to leave
1146	+	if (gui_connection) {
1147	+	if (rpc_method_invoke(gui_connection, RPC_METHOD_EXIT, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
1148	+	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID);
1149	+	}
1150
1151		exit(0);
1152		}
1153
1154
1155		/*
1156	+	*  Initialize Kernel Data segments
1157	+	*/
1158	+
1159	+	static bool kernel_data_init(void)
1160	+	{
1161	+	char str[256];
1162	+	void *kernel_addr1 = NULL;
1163	+	void *kernel_addr2 = NULL;
1164	+	uint32 kernel_area_size = (KERNEL_AREA_SIZE + SHMLBA - 1) & -SHMLBA;
1165	+
1166	+	kernel_area = shmget(IPC_PRIVATE, kernel_area_size, 0600);
1167	+	if (kernel_area == -1) {
1168	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1169	+	goto fail_shmget;
1170	+	}
1171	+	kernel_addr1 = Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA);
1172	+	if (shmat(kernel_area, kernel_addr1, 0) != kernel_addr1) {
1173	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1174	+	goto fail_shmat1;
1175	+	}
1176	+	kernel_addr2 = Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA);
1177	+	if (shmat(kernel_area, kernel_addr2, 0) != kernel_addr2) {
1178	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1179	+	goto fail_shmat2;
1180	+	}
1181	+	atexit(kernel_data_exit);
1182	+	return true;
1183	+
1184	+	fail_shmat2:
1185	+	shmdt(kernel_addr1);
1186	+	fail_shmat1:
1187	+	shmctl(kernel_area, IPC_RMID, NULL);
1188	+	fail_shmget:
1189	+	ErrorAlert(str);
1190	+	return false;
1191	+	}
1192	+
1193	+
1194	+	/*
1195	+	*  Deallocate Kernel Data segments
1196	+	*/
1197	+
1198	+	static void kernel_data_exit(void)
1199	+	{
1200	+	if (kernel_area >= 0) {
1201	+	shmdt(Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA));
1202	+	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA));
1203	+	shmctl(kernel_area, IPC_RMID, NULL);
1204	+	kernel_area = NULL;
1205	+	}
1206	+	}
1207	+
1208	+
1209	+	/*
1210		*  Jump into Mac ROM, start 680x0 emulator
1211		*/
1212
#	Line 913 | Line 1234 | static void *emul_func(void *arg)
1234		// Jump to ROM boot routine
1235		D(bug("Jumping to ROM\n"));
1236		#if EMULATED_PPC
1237	<	jump_to_rom(ROM_BASE + 0x310000);
1237	>	jump_to_rom(ROMBase + 0x310000);
1238		#else
1239	<	jump_to_rom(ROM_BASE + 0x310000, (uint32)emulator_data);
1239	>	jump_to_rom(ROMBase + 0x310000, (uint32)emulator_data);
1240		#endif
1241		D(bug("Returned from ROM\n"));
1242
#	Line 954 | Line 1275 | void Execute68kTrap(uint16 trap, M68kReg
1275		uint16 proc[2] = {trap, M68K_RTS};
1276		Execute68k((uint32)proc, r);
1277		}
957	–
958	–
959	–	/*
960	–	*  Execute PPC code from EMUL_OP routine (real mode switch)
961	–	*/
962	–
963	–	void ExecutePPC(void (*func)())
964	–	{
965	–	uint32 tvect[2] = {(uint32)func, 0};    // Fake TVECT
966	–	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
967	–	M68kRegisters r;
968	–	Execute68k((uint32)&desc, &r);
969	–	}
1278		#endif
1279
1280
#	Line 985 | Line 1293 | void QuitEmulator(void)
1293
1294
1295		/*
988	–	*  Pause/resume emulator
989	–	*/
990	–
991	–	void PauseEmulator(void)
992	–	{
993	–	pthread_kill(emul_thread, SIGSTOP);
994	–	}
995	–
996	–	void ResumeEmulator(void)
997	–	{
998	–	pthread_kill(emul_thread, SIGCONT);
999	–	}
1000	–
1001	–
1002	–	/*
1296		*  Dump 68k registers
1297		*/
1298
#	Line 1027 | Line 1320 | void Dump68kRegs(M68kRegisters *r)
1320		*  Make code executable
1321		*/
1322
1323	<	void MakeExecutable(int dummy, void *start, uint32 length)
1323	>	void MakeExecutable(int dummy, uint32 start, uint32 length)
1324		{
1325	<	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1325	>	if ((start >= ROMBase) && (start < (ROMBase + ROM_SIZE)))
1326		return;
1327		#if EMULATED_PPC
1328	<	FlushCodeCache((uintptr)start, (uintptr)start + length);
1328	>	FlushCodeCache(start, start + length);
1329		#else
1330	<	flush_icache_range(start, (void *)((uintptr)start + length));
1330	>	flush_icache_range(start, start + length);
1331		#endif
1332		}
1333
1334
1335		/*
1336	<	*  Patch things after system startup (gets called by disk driver accRun routine)
1336	>	*  NVRAM watchdog thread (saves NVRAM every minute)
1337		*/
1338
1339	<	void PatchAfterStartup(void)
1339	>	static void nvram_watchdog(void)
1340		{
1341	<	#if EMULATED_PPC
1342	<	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1343	<	#else
1344	<	ExecutePPC(VideoInstallAccel);
1052	<	#endif
1053	<	InstallExtFS();
1341	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1342	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1343	>	SaveXPRAM();
1344	>	}
1345		}
1346
1056	–
1057	–	/*
1058	–	*  NVRAM watchdog thread (saves NVRAM every minute)
1059	–	*/
1060	–
1347		static void *nvram_func(void *arg)
1348		{
1349	<	struct timespec req = {60, 0};  // 1 minute
1350	<
1351	<	for (;;) {
1352	<	pthread_testcancel();
1067	<	nanosleep(&req, NULL);
1068	<	pthread_testcancel();
1069	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1070	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1071	<	SaveXPRAM();
1072	<	}
1349	>	while (!nvram_thread_cancel) {
1350	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1351	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1352	>	nvram_watchdog();
1353		}
1354		return NULL;
1355		}
#	Line 1082 | Line 1362 | static void *nvram_func(void *arg)
1362		static void *tick_func(void *arg)
1363		{
1364		int tick_counter = 0;
1365	<	struct timespec req = {0, 16625000};
1365	>	uint64 start = GetTicks_usec();
1366	>	int64 ticks = 0;
1367	>	uint64 next = GetTicks_usec();
1368
1369	<	for (;;) {
1369	>	while (!tick_thread_cancel) {
1370
1371		// Wait
1372	<	nanosleep(&req, NULL);
1372	>	next += 16625;
1373	>	int64 delay = next - GetTicks_usec();
1374	>	if (delay > 0)
1375	>	Delay_usec(delay);
1376	>	else if (delay < -16625)
1377	>	next = GetTicks_usec();
1378	>	ticks++;
1379
1380		#if !EMULATED_PPC
1381		// Did we crash?
1382		if (emul_thread_fatal) {
1383
1384		// Yes, dump registers
1385	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1385	>	sigregs *r = &sigsegv_regs;
1386		char str[256];
1387	<	sprintf(str, "SIGSEGV\n"
1387	>	if (crash_reason == NULL)
1388	>	crash_reason = "SIGSEGV";
1389	>	sprintf(str, "%s\n"
1390		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1391		"  xer %08lx     cr %08lx  \n"
1392		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1107 | Line 1397 | static void *tick_func(void *arg)
1397		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1398		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1399		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1400	+	crash_reason,
1401		r->nip, r->link, r->ctr, r->msr,
1402		r->xer, r->ccr,
1403		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1142 | Line 1433 | static void *tick_func(void *arg)
1433		TriggerInterrupt();
1434		}
1435		}
1436	+
1437	+	uint64 end = GetTicks_usec();
1438	+	D(bug("%lld ticks in %lld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1439		return NULL;
1440		}
1441
#	Line 1152 | Line 1446 | static void *tick_func(void *arg)
1446
1447		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1448		{
1449	<	// nothing to do
1449	>	#ifdef HAVE_PTHREADS
1450	>	pthread_attr_init(attr);
1451	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1452	>	// Some of these only work for superuser
1453	>	if (geteuid() == 0) {
1454	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1455	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1456	>	struct sched_param fifo_param;
1457	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1458	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1459	>	priority);
1460	>	pthread_attr_setschedparam(attr, &fifo_param);
1461	>	}
1462	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1463	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1464	>	// If system scope is not available (eg. we're not running
1465	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1466	>	// scope.  It exposes pthread scheduling to the kernel,
1467	>	// without setting realtime priority.
1468	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1469	>	#endif
1470	>	}
1471	>	#endif
1472	>	#endif
1473		}
1474
1475
#	Line 1168 | Line 1485 | struct B2_mutex {
1485		pthread_mutexattr_init(&attr);
1486		// Initialize the mutex for priority inheritance --
1487		// required for accurate timing.
1488	<	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1488	>	#if defined(HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL) && !defined(__CYGWIN__)
1489		pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1490		#endif
1491		#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
#	Line 1239 | Line 1556 | void B2_delete_mutex(B2_mutex *mutex)
1556		*  Trigger signal USR2 from another thread
1557		*/
1558
1559	<	#if !EMULATED_PPC || ASYNC_IRQ
1559	>	#if !EMULATED_PPC
1560		void TriggerInterrupt(void)
1561		{
1562	<	if (ready_for_signals)
1562	>	if (ready_for_signals) {
1563	>	idle_resume();
1564		pthread_kill(emul_thread, SIGUSR2);
1565	+	}
1566		}
1567		#endif
1568
#	Line 1271 | Line 1590 | void ClearInterruptFlag(uint32 flag)
1590
1591		void DisableInterrupt(void)
1592		{
1593	+	#if EMULATED_PPC
1594	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1595	+	#else
1596		atomic_add((int *)XLM_IRQ_NEST, 1);
1597	+	#endif
1598		}
1599
1600
#	Line 1281 | Line 1604 | void DisableInterrupt(void)
1604
1605		void EnableInterrupt(void)
1606		{
1607	+	#if EMULATED_PPC
1608	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1609	+	#else
1610		atomic_add((int *)XLM_IRQ_NEST, -1);
1611	+	#endif
1612		}
1613
1614
#	Line 1289 | Line 1616 | void EnableInterrupt(void)
1616		*  USR2 handler
1617		*/
1618
1619	<	#if EMULATED_PPC
1620	<	static void sigusr2_handler(int sig)
1619	>	#if !EMULATED_PPC
1620	>	void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1621		{
1622	<	#if ASYNC_IRQ
1623	<	extern void HandleInterrupt(void);
1624	<	HandleInterrupt();
1622	>	machine_regs *r = MACHINE_REGISTERS(scp);
1623	>
1624	>	#ifdef SYSTEM_CLOBBERS_R2
1625	>	// Restore pointer to Thread Local Storage
1626	>	set_r2(TOC);
1627	>	#endif
1628	>	#ifdef SYSTEM_CLOBBERS_R13
1629	>	// Restore pointer to .sdata section
1630	>	set_r13(R13);
1631	>	#endif
1632	>
1633	>	#ifdef USE_SDL_VIDEO
1634	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1635	>	SDL_PumpEvents();
1636		#endif
1299	–	}
1300	–	#else
1301	–	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1302	–	{
1303	–	pt_regs *r = sc->regs;
1637
1638		// Do nothing if interrupts are disabled
1639		if (*(int32 *)XLM_IRQ_NEST > 0)
#	Line 1314 | Line 1647 | static void sigusr2_handler(int sig, sig
1647		case MODE_68K:
1648		// 68k emulator active, trigger 68k interrupt level 1
1649		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1650	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1650	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1651		break;
1652
1653		#if INTERRUPTS_IN_NATIVE_MODE
1654		case MODE_NATIVE:
1655		// 68k emulator inactive, in nanokernel?
1656	<	if (r->gpr[1] != KernelDataAddr) {
1656	>	if (r->gpr(1) != KernelDataAddr) {
1657	>
1658	>	// Set extra stack for SIGSEGV handler
1659	>	sigaltstack(&extra_stack, NULL);
1660	>
1661		// Prepare for 68k interrupt level 1
1662		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1663		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1664
1665		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1666	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1666	>	DisableInterrupt();
1667		if (ROMType == ROMTYPE_NEWWORLD)
1668	<	ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1668	>	ppc_interrupt(ROMBase + 0x312b1c, KernelDataAddr);
1669		else
1670	<	ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1670	>	ppc_interrupt(ROMBase + 0x312a3c, KernelDataAddr);
1671	>
1672	>	// Reset normal stack
1673	>	sigaltstack(&sig_stack, NULL);
1674		}
1675		break;
1676		#endif
#	Line 1341 | Line 1681 | static void sigusr2_handler(int sig, sig
1681		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1682
1683		// Set extra stack for SIGSEGV handler
1684	<	struct sigaltstack new_stack;
1345	<	new_stack.ss_sp = extra_stack;
1346	<	new_stack.ss_flags = 0;
1347	<	new_stack.ss_size = SIG_STACK_SIZE;
1348	<	sigaltstack(&new_stack, NULL);
1684	>	sigaltstack(&extra_stack, NULL);
1685		#if 1
1686		// Execute full 68k interrupt routine
1687		M68kRegisters r;
#	Line 1367 | Line 1703 | static void sigusr2_handler(int sig, sig
1703		if (InterruptFlags & INTFLAG_VIA) {
1704		ClearInterruptFlag(INTFLAG_VIA);
1705		ADBInterrupt();
1706	<	ExecutePPC(VideoVBL);
1706	>	ExecuteNative(NATIVE_VIDEO_VBL);
1707		}
1708		}
1709		#endif
1710	<	// Reset normal signal stack
1711	<	new_stack.ss_sp = sig_stack;
1376	<	new_stack.ss_flags = 0;
1377	<	new_stack.ss_size = SIG_STACK_SIZE;
1378	<	sigaltstack(&new_stack, NULL);
1710	>	// Reset normal stack
1711	>	sigaltstack(&sig_stack, NULL);
1712		}
1713		break;
1714		#endif
#	Line 1389 | Line 1722 | static void sigusr2_handler(int sig, sig
1722		*/
1723
1724		#if !EMULATED_PPC
1725	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1725	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1726		{
1727	<	pt_regs *r = sc->regs;
1727	>	machine_regs *r = MACHINE_REGISTERS(scp);
1728
1729		// Get effective address
1730	<	uint32 addr = r->dar;
1730	>	uint32 addr = r->dar();
1731
1732	+	#ifdef SYSTEM_CLOBBERS_R2
1733	+	// Restore pointer to Thread Local Storage
1734	+	set_r2(TOC);
1735	+	#endif
1736	+	#ifdef SYSTEM_CLOBBERS_R13
1737	+	// Restore pointer to .sdata section
1738	+	set_r13(R13);
1739	+	#endif
1740	+
1741		#if ENABLE_VOSF
1742	<	// Handle screen fault.
1743	<	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1744	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1742	>	// Handle screen fault
1743	>	#if SIGSEGV_CHECK_VERSION(1,0,0)
1744	>	sigsegv_info_t si;
1745	>	si.addr = (sigsegv_address_t)addr;
1746	>	si.pc = (sigsegv_address_t)r->pc();
1747	>	#endif
1748	>	extern bool Screen_fault_handler(sigsegv_info_t *sip);
1749	>	if (Screen_fault_handler(&si))
1750		return;
1751		#endif
1752
1753	<	num_segv++;
1754	<
1408	<	// Fault in Mac ROM or RAM?
1409	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1753	>	// Fault in Mac ROM or RAM or DR Cache?
1754	>	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));
1755		if (mac_fault) {
1756
1757		// "VM settings" during MacOS 8 installation
1758	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1759	<	r->nip += 4;
1760	<	r->gpr[8] = 0;
1758	>	if (r->pc() == ROMBase + 0x488160 && r->gpr(20) == 0xf8000000) {
1759	>	r->pc() += 4;
1760	>	r->gpr(8) = 0;
1761		return;
1762
1763		// MacOS 8.5 installation
1764	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1765	<	r->nip += 4;
1766	<	r->gpr[8] = 0;
1764	>	} else if (r->pc() == ROMBase + 0x488140 && r->gpr(16) == 0xf8000000) {
1765	>	r->pc() += 4;
1766	>	r->gpr(8) = 0;
1767		return;
1768
1769		// MacOS 8 serial drivers on startup
1770	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1771	<	r->nip += 4;
1772	<	r->gpr[8] = 0;
1770	>	} else if (r->pc() == ROMBase + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1771	>	r->pc() += 4;
1772	>	r->gpr(8) = 0;
1773		return;
1774
1775		// MacOS 8.1 serial drivers on startup
1776	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1777	<	r->nip += 4;
1776	>	} else if (r->pc() == ROMBase + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1777	>	r->pc() += 4;
1778		return;
1779	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1780	<	r->nip += 4;
1779	>	} else if (r->pc() == ROMBase + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1780	>	r->pc() += 4;
1781	>	return;
1782	>
1783	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1784	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1785	>	r->pc() += 4;
1786	>	return;
1787	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1788	>	r->pc() += 4;
1789		return;
1790		}
1791
1792		// Get opcode and divide into fields
1793	<	uint32 opcode = *((uint32 *)r->nip);
1793	>	uint32 opcode = *((uint32 *)r->pc());
1794		uint32 primop = opcode >> 26;
1795		uint32 exop = (opcode >> 1) & 0x3ff;
1796		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1526 | Line 1879 | static void sigsegv_handler(int sig, sig
1879		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1880		case 45:        // sthu
1881		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1882	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1883	+	case 46:        // lmw
1884	+	if ((addr % 4) != 0) {
1885	+	uint32 ea = addr;
1886	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1887	+	for (int i = rd; i <= 31; i++) {
1888	+	r->gpr(i) = ReadMacInt32(ea);
1889	+	ea += 4;
1890	+	}
1891	+	r->pc() += 4;
1892	+	goto rti;
1893	+	}
1894	+	break;
1895	+	case 47:        // stmw
1896	+	if ((addr % 4) != 0) {
1897	+	uint32 ea = addr;
1898	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1899	+	for (int i = rd; i <= 31; i++) {
1900	+	WriteMacInt32(ea, r->gpr(i));
1901	+	ea += 4;
1902	+	}
1903	+	r->pc() += 4;
1904	+	goto rti;
1905	+	}
1906	+	break;
1907	+	#endif
1908		}
1909
1910	<	// Ignore ROM writes
1911	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1912	<	//                      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));
1910	>	// Ignore ROM writes (including to the zero page, which is read-only)
1911	>	if (transfer_type == TYPE_STORE &&
1912	>	((addr >= ROMBase && addr < ROMBase + ROM_SIZE) ||
1913	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1914	>	//                      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()));
1915		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1916	<	r->gpr[ra] = addr;
1917	<	r->nip += 4;
1916	>	r->gpr(ra) = addr;
1917	>	r->pc() += 4;
1918		goto rti;
1919		}
1920
1921		// Ignore illegal memory accesses?
1922		if (PrefsFindBool("ignoresegv")) {
1923		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1924	<	r->gpr[ra] = addr;
1924	>	r->gpr(ra) = addr;
1925		if (transfer_type == TYPE_LOAD)
1926	<	r->gpr[rd] = 0;
1927	<	r->nip += 4;
1926	>	r->gpr(rd) = 0;
1927	>	r->pc() += 4;
1928		goto rti;
1929		}
1930
#	Line 1551 | Line 1932 | static void sigsegv_handler(int sig, sig
1932		if (!PrefsFindBool("nogui")) {
1933		char str[256];
1934		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1935	<	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]);
1935	>	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));
1936		else
1937	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1937	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1938		ErrorAlert(str);
1939		QuitEmulator();
1940		return;
#	Line 1561 | Line 1942 | static void sigsegv_handler(int sig, sig
1942		}
1943
1944		// For all other errors, jump into debugger (sort of...)
1945	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1946		if (!ready_for_signals) {
1947	<	printf("SIGSEGV\n");
1948	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1947	>	printf("%s\n");
1948	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1949		printf(
1950		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1951		"  xer %08lx     cr %08lx  \n"
#	Line 1575 | Line 1957 | static void sigsegv_handler(int sig, sig
1957		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1958		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1959		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1960	<	r->nip, r->link, r->ctr, r->msr,
1961	<	r->xer, r->ccr,
1962	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1963	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1964	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1965	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1966	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1967	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1968	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1969	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1960	>	crash_reason,
1961	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1962	>	r->xer(), r->cr(),
1963	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1964	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1965	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1966	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1967	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1968	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1969	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1970	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1971		exit(1);
1972		QuitEmulator();
1973		return;
1974		} else {
1975		// We crashed. Save registers, tell tick thread and loop forever
1976	<	sigsegv_regs = *(sigregs *)r;
1976	>	build_sigregs(&sigsegv_regs, r);
1977		emul_thread_fatal = true;
1978		for (;;) ;
1979		}
#	Line 1602 | Line 1985 | rti:;
1985		*  SIGILL handler
1986		*/
1987
1988	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1988	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
1989		{
1990	<	pt_regs *r = sc->regs;
1990	>	machine_regs *r = MACHINE_REGISTERS(scp);
1991		char str[256];
1992
1993	+	#ifdef SYSTEM_CLOBBERS_R2
1994	+	// Restore pointer to Thread Local Storage
1995	+	set_r2(TOC);
1996	+	#endif
1997	+	#ifdef SYSTEM_CLOBBERS_R13
1998	+	// Restore pointer to .sdata section
1999	+	set_r13(R13);
2000	+	#endif
2001	+
2002		// Fault in Mac ROM or RAM?
2003	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
2003	>	bool mac_fault = (r->pc() >= ROMBase) && (r->pc() < (ROMBase + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
2004		if (mac_fault) {
2005
2006		// Get opcode and divide into fields
2007	<	uint32 opcode = *((uint32 *)r->nip);
2007	>	uint32 opcode = *((uint32 *)r->pc());
2008		uint32 primop = opcode >> 26;
2009		uint32 exop = (opcode >> 1) & 0x3ff;
2010		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1623 | Line 2015 | static void sigill_handler(int sig, sigc
2015		switch (primop) {
2016		case 9:         // POWER instructions
2017		case 22:
2018	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
2018	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
2019		ErrorAlert(str);
2020		QuitEmulator();
2021		return;
#	Line 1631 | Line 2023 | power_inst:            sprintf(str, GetString(STR_
2023		case 31:
2024		switch (exop) {
2025		case 83:        // mfmsr
2026	<	r->gpr[rd] = 0xf072;
2027	<	r->nip += 4;
2026	>	r->gpr(rd) = 0xf072;
2027	>	r->pc() += 4;
2028		goto rti;
2029
2030		case 210:       // mtsr
2031		case 242:       // mtsrin
2032		case 306:       // tlbie
2033	<	r->nip += 4;
2033	>	r->pc() += 4;
2034		goto rti;
2035
2036		case 339: {     // mfspr
#	Line 1654 | Line 2046 | power_inst:            sprintf(str, GetString(STR_
2046		case 957:       // PMC3
2047		case 958:       // PMC4
2048		case 959:       // SDA
2049	<	r->nip += 4;
2049	>	r->pc() += 4;
2050		goto rti;
2051		case 25:        // SDR1
2052	<	r->gpr[rd] = 0xdead001f;
2053	<	r->nip += 4;
2052	>	r->gpr(rd) = 0xdead001f;
2053	>	r->pc() += 4;
2054		goto rti;
2055		case 287:       // PVR
2056	<	r->gpr[rd] = PVR;
2057	<	r->nip += 4;
2056	>	r->gpr(rd) = PVR;
2057	>	r->pc() += 4;
2058		goto rti;
2059		}
2060		break;
#	Line 1698 | Line 2090 | power_inst:            sprintf(str, GetString(STR_
2090		case 957:       // PMC3
2091		case 958:       // PMC4
2092		case 959:       // SDA
2093	<	r->nip += 4;
2093	>	r->pc() += 4;
2094		goto rti;
2095		}
2096		break;
#	Line 1717 | Line 2109 | power_inst:            sprintf(str, GetString(STR_
2109
2110		// In GUI mode, show error alert
2111		if (!PrefsFindBool("nogui")) {
2112	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
2112	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
2113		ErrorAlert(str);
2114		QuitEmulator();
2115		return;
#	Line 1725 | Line 2117 | power_inst:            sprintf(str, GetString(STR_
2117		}
2118
2119		// For all other errors, jump into debugger (sort of...)
2120	+	crash_reason = "SIGILL";
2121		if (!ready_for_signals) {
2122	<	printf("SIGILL\n");
2123	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
2122	>	printf("%s\n");
2123	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
2124		printf(
2125		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
2126		"  xer %08lx     cr %08lx  \n"
#	Line 1739 | Line 2132 | power_inst:            sprintf(str, GetString(STR_
2132		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
2133		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
2134		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
2135	<	r->nip, r->link, r->ctr, r->msr,
2136	<	r->xer, r->ccr,
2137	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2138	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2139	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2140	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2141	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2142	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2143	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2144	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2135	>	crash_reason,
2136	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2137	>	r->xer(), r->cr(),
2138	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2139	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2140	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2141	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2142	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2143	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2144	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2145	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2146		exit(1);
2147		QuitEmulator();
2148		return;
2149		} else {
2150		// We crashed. Save registers, tell tick thread and loop forever
2151	<	sigsegv_regs = *(sigregs *)r;
2151	>	build_sigregs(&sigsegv_regs, r);
2152		emul_thread_fatal = true;
2153		for (;;) ;
2154		}
#	Line 1764 | Line 2158 | rti:;
2158
2159
2160		/*
2161	+	*  Helpers to share 32-bit addressable data with MacOS
2162	+	*/
2163	+
2164	+	bool SheepMem::Init(void)
2165	+	{
2166	+	// Size of a native page
2167	+	page_size = getpagesize();
2168	+
2169	+	// Allocate SheepShaver globals
2170	+	proc = base;
2171	+	if (vm_mac_acquire_fixed(base, size) < 0)
2172	+	return false;
2173	+
2174	+	// Allocate page with all bits set to 0, right in the middle
2175	+	// This is also used to catch undesired overlaps between proc and data areas
2176	+	zero_page = proc + (size / 2);
2177	+	Mac_memset(zero_page, 0, page_size);
2178	+	if (vm_protect(Mac2HostAddr(zero_page), page_size, VM_PAGE_READ) < 0)
2179	+	return false;
2180	+
2181	+	#if EMULATED_PPC
2182	+	// Allocate alternate stack for PowerPC interrupt routine
2183	+	sig_stack = base + size;
2184	+	if (vm_mac_acquire_fixed(sig_stack, SIG_STACK_SIZE) < 0)
2185	+	return false;
2186	+	#endif
2187	+
2188	+	data = base + size;
2189	+	return true;
2190	+	}
2191	+
2192	+	void SheepMem::Exit(void)
2193	+	{
2194	+	if (data) {
2195	+	// Delete SheepShaver globals
2196	+	vm_mac_release(base, size);
2197	+
2198	+	#if EMULATED_PPC
2199	+	// Delete alternate stack for PowerPC interrupt routine
2200	+	vm_mac_release(sig_stack, SIG_STACK_SIZE);
2201	+	#endif
2202	+	}
2203	+	}
2204	+
2205	+
2206	+	/*
2207		*  Display alert
2208		*/
2209
#	Line 1812 | Line 2252 | void display_alert(int title_id, int pre
2252
2253		void ErrorAlert(const char *text)
2254		{
2255	<	#ifdef ENABLE_GTK
2255	>	if (gui_connection) {
2256	>	if (rpc_method_invoke(gui_connection, RPC_METHOD_ERROR_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2257	>	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2258	>	return;
2259	>	}
2260	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2261		if (PrefsFindBool("nogui") || x_display == NULL) {
2262		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2263		return;
#	Line 1831 | Line 2276 | void ErrorAlert(const char *text)
2276
2277		void WarningAlert(const char *text)
2278		{
2279	<	#ifdef ENABLE_GTK
2279	>	if (gui_connection) {
2280	>	if (rpc_method_invoke(gui_connection, RPC_METHOD_WARNING_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2281	>	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2282	>	return;
2283	>	}
2284	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2285		if (PrefsFindBool("nogui") || x_display == NULL) {
2286		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2287		return;

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