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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 1.32 by gbeauche, 2004-04-06T19:47:56Z

#	Line 1 | Line 1
1		/*
2		*  main_unix.cpp - Emulation core, Unix implementation
3		*
4	<	*  SheepShaver (C) 1997-2002 Christian Bauer and Marc Hellwig
4	>	*  SheepShaver (C) 1997-2004 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 109 | Line 109
109		#include "user_strings.h"
110		#include "vm_alloc.h"
111		#include "sigsegv.h"
112	+	#include "thunks.h"
113
114		#define DEBUG 0
115		#include "debug.h"
#	Line 131 | Line 132
132		#endif
133
134
135	+	// Enable emulation of unaligned lmw/stmw?
136	+	#define EMULATE_UNALIGNED_LOADSTORE_MULTIPLE 1
137	+
138		// Enable Execute68k() safety checks?
139		#define SAFE_EXEC_68K 0
140
#	Line 145 | Line 149
149		const char ROM_FILE_NAME[] = "ROM";
150		const char ROM_FILE_NAME2[] = "Mac OS ROM";
151
152	<	const uint32 RAM_BASE = 0x20000000;                     // Base address of RAM
152	>	const uintptr RAM_BASE = 0x20000000;            // Base address of RAM
153		const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
154
155
156		#if !EMULATED_PPC
153	–	// Structure in which registers are saved in a signal handler;
154	–	// 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	–
157		struct sigregs {
158	<	elf_gregset_t   gp_regs;                                // Identical to pt_regs
159	<	double                  fp_regs[ELF_NFPREG];    // f0..f31 and fpsrc
160	<	//more (uninteresting) stuff following here
158	>	uint32 nip;
159	>	uint32 link;
160	>	uint32 ctr;
161	>	uint32 msr;
162	>	uint32 xer;
163	>	uint32 ccr;
164	>	uint32 gpr[32];
165	>	};
166	>
167	>	#if defined(__linux__)
168	>	#include <sys/ucontext.h>
169	>	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext.regs))
170	>
171	>	struct machine_regs : public pt_regs
172	>	{
173	>	u_long & cr()                           { return pt_regs::ccr; }
174	>	uint32 cr() const                       { return pt_regs::ccr; }
175	>	uint32 lr() const                       { return pt_regs::link; }
176	>	uint32 ctr() const                      { return pt_regs::ctr; }
177	>	uint32 xer() const                      { return pt_regs::xer; }
178	>	uint32 msr() const                      { return pt_regs::msr; }
179	>	uint32 dar() const                      { return pt_regs::dar; }
180	>	u_long & pc()                           { return pt_regs::nip; }
181	>	uint32 pc() const                       { return pt_regs::nip; }
182	>	u_long & gpr(int i)                     { return pt_regs::gpr[i]; }
183	>	uint32 gpr(int i) const         { return pt_regs::gpr[i]; }
184		};
185		#endif
186
187	+	#if defined(__APPLE__) && defined(__MACH__)
188	+	#include <sys/signal.h>
189	+	extern "C" int sigaltstack(const struct sigaltstack *ss, struct sigaltstack *oss);
190	+
191	+	#include <sys/ucontext.h>
192	+	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext))
193	+
194	+	struct machine_regs : public mcontext
195	+	{
196	+	uint32 & cr()                           { return ss.cr; }
197	+	uint32 cr() const                       { return ss.cr; }
198	+	uint32 lr() const                       { return ss.lr; }
199	+	uint32 ctr() const                      { return ss.ctr; }
200	+	uint32 xer() const                      { return ss.xer; }
201	+	uint32 msr() const                      { return ss.srr1; }
202	+	uint32 dar() const                      { return es.dar; }
203	+	uint32 & pc()                           { return ss.srr0; }
204	+	uint32 pc() const                       { return ss.srr0; }
205	+	uint32 & gpr(int i)                     { return (&ss.r0)[i]; }
206	+	uint32 gpr(int i) const         { return (&ss.r0)[i]; }
207	+	};
208	+	#endif
209	+
210	+	static void build_sigregs(sigregs *srp, machine_regs *mrp)
211	+	{
212	+	srp->nip = mrp->pc();
213	+	srp->link = mrp->lr();
214	+	srp->ctr = mrp->ctr();
215	+	srp->msr = mrp->msr();
216	+	srp->xer = mrp->xer();
217	+	srp->ccr = mrp->cr();
218	+	for (int i = 0; i < 32; i++)
219	+	srp->gpr[i] = mrp->gpr(i);
220	+	}
221	+	#endif
222	+
223
224		// Global variables (exported)
225		#if !EMULATED_PPC
#	Line 172 | Line 227 | void *TOC;                             // Small data pointer (r13
227		#endif
228		uint32 RAMBase;                 // Base address of Mac RAM
229		uint32 RAMSize;                 // Size of Mac RAM
175	–	uint32 SheepStack1Base; // SheepShaver first alternate stack base
176	–	uint32 SheepStack2Base; // SheepShaver second alternate stack base
177	–	uint32 SheepThunksBase; // SheepShaver thunks base
230		uint32 KernelDataAddr;  // Address of Kernel Data
231		uint32 BootGlobsAddr;   // Address of BootGlobs structure at top of Mac RAM
232		uint32 PVR;                             // Theoretical PVR
#	Line 183 | Line 235 | int64 BusClockSpeed;   // Bus clock speed
235
236
237		// Global variables
238	<	static char *x_display_name = NULL;                     // X11 display name
238	>	char *x_display_name = NULL;                            // X11 display name
239		Display *x_display = NULL;                                      // X11 display handle
240	+	#ifdef X11_LOCK_TYPE
241	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
242	+	#endif
243
244		static int zero_fd = 0;                                         // FD of /dev/zero
190	–	static bool sheep_area_mapped = false;          // Flag: SheepShaver data area mmap()ed
245		static bool lm_area_mapped = false;                     // Flag: Low Memory area mmap()ped
246		static int kernel_area = -1;                            // SHM ID of Kernel Data area
247		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
#	Line 207 | Line 261 | static bool ready_for_signals = false;
261		static int64 num_segv = 0;                                      // Number of handled SEGV signals
262
263		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
264	<	#if !EMULATED_PPC
264	>	#if EMULATED_PPC
265	>	static uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
266	>	#else
267		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
268		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
269		static void *sig_stack = NULL;                          // Stack for signal handlers
270		static void *extra_stack = NULL;                        // Stack for SIGSEGV inside interrupt handler
271		static bool emul_thread_fatal = false;          // Flag: MacOS thread crashed, tick thread shall dump debug output
272		static sigregs sigsegv_regs;                            // Register dump when crashed
273	+	static const char *crash_reason = NULL;         // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
274		#endif
275
276	+	uint32  SheepMem::page_size;                            // Size of a native page
277	+	uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
278	+	uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
279	+	uintptr SheepMem::top = 0;                                      // Top of SheepShaver data (stack like storage)
280	+
281
282		// Prototypes
283		static void Quit(void);
#	Line 224 | Line 286 | static void *nvram_func(void *arg);
286		static void *tick_func(void *arg);
287		#if EMULATED_PPC
288		static void sigusr2_handler(int sig);
289	+	extern void emul_ppc(uint32 start);
290	+	extern void init_emul_ppc(void);
291	+	extern void exit_emul_ppc(void);
292		#else
293	<	static void sigusr2_handler(int sig, sigcontext_struct *sc);
294	<	static void sigsegv_handler(int sig, sigcontext_struct *sc);
295	<	static void sigill_handler(int sig, sigcontext_struct *sc);
293	>	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
294	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp);
295	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp);
296		#endif
297
298
299		// From asm_linux.S
300	<	#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
300	>	#if !EMULATED_PPC
301		extern "C" void *get_toc(void);
302		extern "C" void *get_sp(void);
303		extern "C" void flush_icache_range(void *start, void *end);
#	Line 251 | Line 312 | extern void paranoia_check(void);
312		#endif
313
314
315	+	#if EMULATED_PPC
316	+	/*
317	+	*  Return signal stack base
318	+	*/
319	+
320	+	uintptr SignalStackBase(void)
321	+	{
322	+	return sig_stack + SIG_STACK_SIZE;
323	+	}
324	+
325	+
326	+	/*
327	+	*  Atomic operations
328	+	*/
329	+
330	+	#if HAVE_SPINLOCKS
331	+	static spinlock_t atomic_ops_lock = SPIN_LOCK_UNLOCKED;
332	+	#else
333	+	#define spin_lock(LOCK)
334	+	#define spin_unlock(LOCK)
335	+	#endif
336	+
337	+	int atomic_add(int *var, int v)
338	+	{
339	+	spin_lock(&atomic_ops_lock);
340	+	int ret = *var;
341	+	*var += v;
342	+	spin_unlock(&atomic_ops_lock);
343	+	return ret;
344	+	}
345	+
346	+	int atomic_and(int *var, int v)
347	+	{
348	+	spin_lock(&atomic_ops_lock);
349	+	int ret = *var;
350	+	*var &= v;
351	+	spin_unlock(&atomic_ops_lock);
352	+	return ret;
353	+	}
354	+
355	+	int atomic_or(int *var, int v)
356	+	{
357	+	spin_lock(&atomic_ops_lock);
358	+	int ret = *var;
359	+	*var |= v;
360	+	spin_unlock(&atomic_ops_lock);
361	+	return ret;
362	+	}
363	+	#endif
364	+
365	+
366		/*
367		*  Main program
368		*/
#	Line 269 | Line 381 | int main(int argc, char **argv)
381		char str[256];
382		uint32 *boot_globs;
383		int16 i16;
272	–	int drive, driver;
384		int rom_fd;
385		FILE *proc_file;
386		const char *rom_path;
#	Line 336 | Line 447 | int main(int argc, char **argv)
447		PVR = 0x00040000;                       // Default: 604
448		CPUClockSpeed = 100000000;      // Default: 100MHz
449		BusClockSpeed = 100000000;      // Default: 100MHz
450	<	#if !EMULATED_PPC
450	>	#if EMULATED_PPC
451	>	PVR = 0x000c0000;                       // Default: 7400 (with AltiVec)
452	>	#else
453		proc_file = fopen("/proc/cpuinfo", "r");
454		if (proc_file) {
455		char line[256];
#	Line 350 | Line 463 | int main(int argc, char **argv)
463		// Parse line
464		int i;
465		char value[256];
466	<	if (sscanf(line, "cpu : %s", value) == 1) {
466	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
467		if (strcmp(value, "601") == 0)
468		PVR = 0x00010000;
469		else if (strcmp(value, "603") == 0)
#	Line 371 | Line 484 | int main(int argc, char **argv)
484		PVR = 0x00320000;
485		else if (strcmp(value, "860") == 0)
486		PVR = 0x00500000;
487	+	else if (strcmp(value, "7400") == 0)
488	+	PVR = 0x000c0000;
489	+	else if (strcmp(value, "7410") == 0)
490	+	PVR = 0x800c0000;
491		else
492		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
493		}
#	Line 406 | Line 523 | int main(int argc, char **argv)
523		goto quit;
524		}
525
526	+	#ifndef PAGEZERO_HACK
527		// Create Low Memory area (0x0000..0x3000)
528		if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
529		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
#	Line 413 | Line 531 | int main(int argc, char **argv)
531		goto quit;
532		}
533		lm_area_mapped = true;
534	+	#endif
535
536		// Create areas for Kernel Data
537		kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
#	Line 431 | Line 550 | int main(int argc, char **argv)
550		ErrorAlert(str);
551		goto quit;
552		}
553	<	kernel_data = (KernelData *)0x68ffe000;
553	>	kernel_data = (KernelData *)KERNEL_DATA_BASE;
554		emulator_data = &kernel_data->ed;
555	<	KernelDataAddr = (uint32)kernel_data;
555	>	KernelDataAddr = KERNEL_DATA_BASE;
556		D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
557
558		// Create area for SheepShaver data
559	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
559	>	if (!SheepMem::Init()) {
560		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
561		ErrorAlert(str);
562		goto quit;
563		}
445	–	SheepStack1Base = SHEEP_BASE + 0x10000;
446	–	SheepStack2Base = SheepStack1Base + 0x10000;
447	–	SheepThunksBase = SheepStack2Base + 0x1000;
448	–	sheep_area_mapped = true;
564
565		// Create area for Mac ROM
566		if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
#	Line 453 | Line 568 | int main(int argc, char **argv)
568		ErrorAlert(str);
569		goto quit;
570		}
571	<	#if !EMULATED_PPC || defined(__powerpc__)
571	>	#if !EMULATED_PPC
572		if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
573		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
574		ErrorAlert(str);
#	Line 523 | Line 638 | int main(int argc, char **argv)
638		// Load NVRAM
639		XPRAMInit();
640
641	+	// Load XPRAM default values if signature not found
642	+	if (XPRAM[0x130c] != 0x4e || XPRAM[0x130d] != 0x75
643	+	|| XPRAM[0x130e] != 0x4d || XPRAM[0x130f] != 0x63) {
644	+	D(bug("Loading XPRAM default values\n"));
645	+	memset(XPRAM + 0x1300, 0, 0x100);
646	+	XPRAM[0x130c] = 0x4e;   // "NuMc" signature
647	+	XPRAM[0x130d] = 0x75;
648	+	XPRAM[0x130e] = 0x4d;
649	+	XPRAM[0x130f] = 0x63;
650	+	XPRAM[0x1301] = 0x80;   // InternalWaitFlags = DynWait (don't wait for SCSI devices upon bootup)
651	+	XPRAM[0x1310] = 0xa8;   // Standard PRAM values
652	+	XPRAM[0x1311] = 0x00;
653	+	XPRAM[0x1312] = 0x00;
654	+	XPRAM[0x1313] = 0x22;
655	+	XPRAM[0x1314] = 0xcc;
656	+	XPRAM[0x1315] = 0x0a;
657	+	XPRAM[0x1316] = 0xcc;
658	+	XPRAM[0x1317] = 0x0a;
659	+	XPRAM[0x131c] = 0x00;
660	+	XPRAM[0x131d] = 0x02;
661	+	XPRAM[0x131e] = 0x63;
662	+	XPRAM[0x131f] = 0x00;
663	+	XPRAM[0x1308] = 0x13;
664	+	XPRAM[0x1309] = 0x88;
665	+	XPRAM[0x130a] = 0x00;
666	+	XPRAM[0x130b] = 0xcc;
667	+	XPRAM[0x1376] = 0x00;   // OSDefault = MacOS
668	+	XPRAM[0x1377] = 0x01;
669	+	}
670	+
671		// Set boot volume
672	<	drive = PrefsFindInt32("bootdrive");
672	>	i16 = PrefsFindInt32("bootdrive");
673		XPRAM[0x1378] = i16 >> 8;
674		XPRAM[0x1379] = i16 & 0xff;
675	<	driver = PrefsFindInt32("bootdriver");
675	>	i16 = PrefsFindInt32("bootdriver");
676		XPRAM[0x137a] = i16 >> 8;
677		XPRAM[0x137b] = i16 & 0xff;
678
#	Line 540 | Line 685 | int main(int argc, char **argv)
685		boot_globs[1] = htonl(RAMSize);
686		boot_globs[2] = htonl((uint32)-1);                      // End of bank table
687
688	+	// Init thunks
689	+	if (!ThunksInit())
690	+	goto quit;
691	+
692		// Init drivers
693		SonyInit();
694		DiskInit();
#	Line 549 | Line 698 | int main(int argc, char **argv)
698		// Init external file system
699		ExtFSInit();
700
701	+	// Init ADB
702	+	ADBInit();
703	+
704		// Init audio
705		AudioInit();
706
#	Line 583 | Line 735 | int main(int argc, char **argv)
735		// Initialize Kernel Data
736		memset(kernel_data, 0, sizeof(KernelData));
737		if (ROMType == ROMTYPE_NEWWORLD) {
738	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
739	<	static uint8 vector_lookup_tbl[128];
740	<	static uint8 vector_mask_tbl[64];
738	>	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
739	>	memset((void *)of_dev_tree, 0, 4 * sizeof(uint32));
740	>	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
741	>	uintptr vector_mask_tbl = SheepMem::Reserve(64);
742		memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
743	<	memset(vector_lookup_tbl, 0, 128);
744	<	memset(vector_mask_tbl, 0, 64);
743	>	memset((void *)vector_lookup_tbl, 0, 128);
744	>	memset((void *)vector_mask_tbl, 0, 64);
745		kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
746	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree);        // OF device tree base
747	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
748	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
746	>	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree);                        // OF device tree base
747	>	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
748	>	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
749		kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
750		kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
751		kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
#	Line 628 | Line 781 | int main(int argc, char **argv)
781		D(bug("Initializing Low Memory...\n"));
782		memset(NULL, 0, 0x3000);
783		WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
784	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data);                    // For trap replacement routines
784	>	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr);                                 // For trap replacement routines
785		WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
786		WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
787		WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
788	<	#if EMULATED_PPC
789	<	WriteMacInt32(XLM_ETHER_INIT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_INIT));
790	<	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);
788	>	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage());                             // Pointer to read-only page with all bits set to 0
789	>	#if !EMULATED_PPC
790	>	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                            // TOC pointer of emulator
791		#endif
792	+	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT));       // DLPI ethernet driver functions
793	+	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
794	+	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
795	+	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
796	+	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
797	+	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
798	+	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
799		D(bug("Low Memory initialized\n"));
800
801		// Start 60Hz thread
#	Line 687 | Line 833 | int main(int argc, char **argv)
833		#endif
834
835		#if !EMULATED_PPC
836	<	// Install SIGSEGV handler
836	>	// Install SIGSEGV and SIGBUS handlers
837		sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
838		sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
839	<	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
840	<	sigsegv_action.sa_flags = SA_ONSTACK;
839	>	sigsegv_action.sa_sigaction = sigsegv_handler;
840	>	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
841	>	#ifdef HAVE_SIGNAL_SA_RESTORER
842		sigsegv_action.sa_restorer = NULL;
843	+	#endif
844		if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
845		sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
846		ErrorAlert(str);
847		goto quit;
848		}
849	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
850	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
851	+	ErrorAlert(str);
852	+	goto quit;
853	+	}
854
855		// Install SIGILL handler
856		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
857		sigaddset(&sigill_action.sa_mask, SIGUSR2);
858	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
859	<	sigill_action.sa_flags = SA_ONSTACK;
858	>	sigill_action.sa_sigaction = sigill_handler;
859	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
860	>	#ifdef HAVE_SIGNAL_SA_RESTORER
861		sigill_action.sa_restorer = NULL;
862	+	#endif
863		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
864		sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
865		ErrorAlert(str);
#	Line 712 | Line 867 | int main(int argc, char **argv)
867		}
868		#endif
869
870	+	#if !EMULATED_PPC
871		// Install interrupt signal handler
872		sigemptyset(&sigusr2_action.sa_mask);
873	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
874	<	sigusr2_action.sa_flags = 0;
875	<	#if !EMULATED_PPC
720	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
721	<	#endif
873	>	sigusr2_action.sa_sigaction = sigusr2_handler;
874	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
875	>	#ifdef HAVE_SIGNAL_SA_RESTORER
876		sigusr2_action.sa_restorer = NULL;
877	+	#endif
878		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
879		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
880		ErrorAlert(str);
881		goto quit;
882		}
883	+	#endif
884
885		// Get my thread ID and execute MacOS thread function
886		emul_thread = pthread_self();
#	Line 743 | Line 899 | quit:
899
900		static void Quit(void)
901		{
902	+	#if EMULATED_PPC
903	+	// Exit PowerPC emulation
904	+	exit_emul_ppc();
905	+	#endif
906	+
907		// Stop 60Hz thread
908		if (tick_thread_active) {
909		pthread_cancel(tick_thread);
#	Line 756 | Line 917 | static void Quit(void)
917		}
918
919		#if !EMULATED_PPC
920	<	// Uninstall SIGSEGV handler
920	>	// Uninstall SIGSEGV and SIGBUS handlers
921		sigemptyset(&sigsegv_action.sa_mask);
922		sigsegv_action.sa_handler = SIG_DFL;
923		sigsegv_action.sa_flags = 0;
924		sigaction(SIGSEGV, &sigsegv_action, NULL);
925	+	sigaction(SIGBUS, &sigsegv_action, NULL);
926
927		// Uninstall SIGILL handler
928		sigemptyset(&sigill_action.sa_mask);
#	Line 787 | Line 949 | static void Quit(void)
949		// Exit audio
950		AudioExit();
951
952	+	// Exit ADB
953	+	ADBExit();
954	+
955		// Exit video
956		VideoExit();
957
#	Line 799 | Line 964 | static void Quit(void)
964		DiskExit();
965		SonyExit();
966
967	+	// Delete thunks
968	+	ThunksExit();
969	+
970	+	// Delete SheepShaver globals
971	+	SheepMem::Exit();
972	+
973		// Delete RAM area
974		if (ram_area_mapped)
975		vm_release((char *)RAM_BASE, RAMSize);
#	Line 846 | Line 1017 | static void Quit(void)
1017		*/
1018
1019		#if EMULATED_PPC
849	–	extern void emul_ppc(uint32 start);
850	–	extern void init_emul_ppc(void);
1020		void jump_to_rom(uint32 entry)
1021		{
1022		init_emul_ppc();
#	Line 912 | Line 1081 | void Execute68kTrap(uint16 trap, M68kReg
1081		uint16 proc[2] = {trap, M68K_RTS};
1082		Execute68k((uint32)proc, r);
1083		}
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	–	}
1084		#endif
1085
1086
#	Line 987 | Line 1143 | void Dump68kRegs(M68kRegisters *r)
1143
1144		void MakeExecutable(int dummy, void *start, uint32 length)
1145		{
1146	<	#if !EMULATED_PPC
991	<	if (((uint32)start >= ROM_BASE) && ((uint32)start < (ROM_BASE + ROM_SIZE)))
1146	>	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1147		return;
1148	<	flush_icache_range(start, (void *)((uint32)start + length));
1148	>	#if EMULATED_PPC
1149	>	FlushCodeCache((uintptr)start, (uintptr)start + length);
1150	>	#else
1151	>	flush_icache_range(start, (void *)((uintptr)start + length));
1152		#endif
1153		}
1154
#	Line 1001 | Line 1159 | void MakeExecutable(int dummy, void *sta
1159
1160		void PatchAfterStartup(void)
1161		{
1004	–	#if EMULATED_PPC
1162		ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1006	–	#else
1007	–	ExecutePPC(VideoInstallAccel);
1008	–	#endif
1163		InstallExtFS();
1164		}
1165
#	Line 1050 | Line 1204 | static void *tick_func(void *arg)
1204		if (emul_thread_fatal) {
1205
1206		// Yes, dump registers
1207	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1207	>	sigregs *r = &sigsegv_regs;
1208		char str[256];
1209	<	sprintf(str, "SIGSEGV\n"
1209	>	if (crash_reason == NULL)
1210	>	crash_reason = "SIGSEGV";
1211	>	sprintf(str, "%s\n"
1212		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1213		"  xer %08lx     cr %08lx  \n"
1214		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1063 | Line 1219 | static void *tick_func(void *arg)
1219		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1220		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1221		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1222	+	crash_reason,
1223		r->nip, r->link, r->ctr, r->msr,
1224		r->xer, r->ccr,
1225		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1108 | Line 1265 | static void *tick_func(void *arg)
1265
1266		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1267		{
1268	<	// nothing to do
1268	>	#ifdef HAVE_PTHREADS
1269	>	pthread_attr_init(attr);
1270	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1271	>	// Some of these only work for superuser
1272	>	if (geteuid() == 0) {
1273	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1274	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1275	>	struct sched_param fifo_param;
1276	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1277	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1278	>	priority);
1279	>	pthread_attr_setschedparam(attr, &fifo_param);
1280	>	}
1281	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1282	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1283	>	// If system scope is not available (eg. we're not running
1284	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1285	>	// scope.  It exposes pthread scheduling to the kernel,
1286	>	// without setting realtime priority.
1287	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1288	>	#endif
1289	>	}
1290	>	#endif
1291	>	#endif
1292		}
1293
1294
#	Line 1254 | Line 1434 | static void sigusr2_handler(int sig)
1434		#endif
1435		}
1436		#else
1437	<	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1437	>	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1438		{
1439	<	pt_regs *r = sc->regs;
1439	>	machine_regs *r = MACHINE_REGISTERS(scp);
1440
1441		// Do nothing if interrupts are disabled
1442		if (*(int32 *)XLM_IRQ_NEST > 0)
#	Line 1270 | Line 1450 | static void sigusr2_handler(int sig, sig
1450		case MODE_68K:
1451		// 68k emulator active, trigger 68k interrupt level 1
1452		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1453	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1453	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1454		break;
1455
1456		#if INTERRUPTS_IN_NATIVE_MODE
1457		case MODE_NATIVE:
1458		// 68k emulator inactive, in nanokernel?
1459	<	if (r->gpr[1] != KernelDataAddr) {
1459	>	if (r->gpr(1) != KernelDataAddr) {
1460		// Prepare for 68k interrupt level 1
1461		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1462		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
#	Line 1323 | Line 1503 | static void sigusr2_handler(int sig, sig
1503		if (InterruptFlags & INTFLAG_VIA) {
1504		ClearInterruptFlag(INTFLAG_VIA);
1505		ADBInterrupt();
1506	<	ExecutePPC(VideoVBL);
1506	>	ExecuteNative(NATIVE_VIDEO_VBL);
1507		}
1508		}
1509		#endif
#	Line 1345 | Line 1525 | static void sigusr2_handler(int sig, sig
1525		*/
1526
1527		#if !EMULATED_PPC
1528	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1528	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1529		{
1530	<	pt_regs *r = sc->regs;
1530	>	machine_regs *r = MACHINE_REGISTERS(scp);
1531
1532		// Get effective address
1533	<	uint32 addr = r->dar;
1533	>	uint32 addr = r->dar();
1534
1535		#if ENABLE_VOSF
1536		// Handle screen fault.
1537		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1538	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1538	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1539		return;
1540		#endif
1541
1542		num_segv++;
1543
1544		// Fault in Mac ROM or RAM?
1545	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1545	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1546		if (mac_fault) {
1547
1548		// "VM settings" during MacOS 8 installation
1549	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1550	<	r->nip += 4;
1551	<	r->gpr[8] = 0;
1549	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1550	>	r->pc() += 4;
1551	>	r->gpr(8) = 0;
1552		return;
1553
1554		// MacOS 8.5 installation
1555	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1556	<	r->nip += 4;
1557	<	r->gpr[8] = 0;
1555	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1556	>	r->pc() += 4;
1557	>	r->gpr(8) = 0;
1558		return;
1559
1560		// MacOS 8 serial drivers on startup
1561	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1562	<	r->nip += 4;
1563	<	r->gpr[8] = 0;
1561	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1562	>	r->pc() += 4;
1563	>	r->gpr(8) = 0;
1564		return;
1565
1566		// MacOS 8.1 serial drivers on startup
1567	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1568	<	r->nip += 4;
1567	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1568	>	r->pc() += 4;
1569		return;
1570	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1571	<	r->nip += 4;
1570	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1571	>	r->pc() += 4;
1572		return;
1573		}
1574
1575		// Get opcode and divide into fields
1576	<	uint32 opcode = *((uint32 *)r->nip);
1576	>	uint32 opcode = *((uint32 *)r->pc());
1577		uint32 primop = opcode >> 26;
1578		uint32 exop = (opcode >> 1) & 0x3ff;
1579		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1482 | Line 1662 | static void sigsegv_handler(int sig, sig
1662		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1663		case 45:        // sthu
1664		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1665	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1666	+	case 46:        // lmw
1667	+	if ((addr % 4) != 0) {
1668	+	uint32 ea = addr;
1669	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1670	+	for (int i = rd; i <= 31; i++) {
1671	+	r->gpr(i) = ReadMacInt32(ea);
1672	+	ea += 4;
1673	+	}
1674	+	r->pc() += 4;
1675	+	goto rti;
1676	+	}
1677	+	break;
1678	+	case 47:        // stmw
1679	+	if ((addr % 4) != 0) {
1680	+	uint32 ea = addr;
1681	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1682	+	for (int i = rd; i <= 31; i++) {
1683	+	WriteMacInt32(ea, r->gpr(i));
1684	+	ea += 4;
1685	+	}
1686	+	r->pc() += 4;
1687	+	goto rti;
1688	+	}
1689	+	break;
1690	+	#endif
1691		}
1692
1693	<	// Ignore ROM writes
1694	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1695	<	//                      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));
1693	>	// Ignore ROM writes (including to the zero page, which is read-only)
1694	>	if (transfer_type == TYPE_STORE &&
1695	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) ||
1696	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1697	>	//                      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()));
1698		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1699	<	r->gpr[ra] = addr;
1700	<	r->nip += 4;
1699	>	r->gpr(ra) = addr;
1700	>	r->pc() += 4;
1701		goto rti;
1702		}
1703
1704		// Ignore illegal memory accesses?
1705		if (PrefsFindBool("ignoresegv")) {
1706		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1707	<	r->gpr[ra] = addr;
1707	>	r->gpr(ra) = addr;
1708		if (transfer_type == TYPE_LOAD)
1709	<	r->gpr[rd] = 0;
1710	<	r->nip += 4;
1709	>	r->gpr(rd) = 0;
1710	>	r->pc() += 4;
1711		goto rti;
1712		}
1713
#	Line 1507 | Line 1715 | static void sigsegv_handler(int sig, sig
1715		if (!PrefsFindBool("nogui")) {
1716		char str[256];
1717		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1718	<	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]);
1718	>	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));
1719		else
1720	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1720	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1721		ErrorAlert(str);
1722		QuitEmulator();
1723		return;
#	Line 1517 | Line 1725 | static void sigsegv_handler(int sig, sig
1725		}
1726
1727		// For all other errors, jump into debugger (sort of...)
1728	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1729		if (!ready_for_signals) {
1730	<	printf("SIGSEGV\n");
1731	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1730	>	printf("%s\n");
1731	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1732		printf(
1733		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1734		"  xer %08lx     cr %08lx  \n"
#	Line 1531 | Line 1740 | static void sigsegv_handler(int sig, sig
1740		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1741		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1742		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1743	<	r->nip, r->link, r->ctr, r->msr,
1744	<	r->xer, r->ccr,
1745	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1746	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1747	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1748	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1749	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1750	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1751	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1752	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1743	>	crash_reason,
1744	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1745	>	r->xer(), r->cr(),
1746	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1747	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1748	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1749	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1750	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1751	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1752	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1753	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1754		exit(1);
1755		QuitEmulator();
1756		return;
1757		} else {
1758		// We crashed. Save registers, tell tick thread and loop forever
1759	<	sigsegv_regs = *(sigregs *)r;
1759	>	build_sigregs(&sigsegv_regs, r);
1760		emul_thread_fatal = true;
1761		for (;;) ;
1762		}
#	Line 1558 | Line 1768 | rti:;
1768		*  SIGILL handler
1769		*/
1770
1771	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1771	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
1772		{
1773	<	pt_regs *r = sc->regs;
1773	>	machine_regs *r = MACHINE_REGISTERS(scp);
1774		char str[256];
1775
1776		// Fault in Mac ROM or RAM?
1777	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1777	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1778		if (mac_fault) {
1779
1780		// Get opcode and divide into fields
1781	<	uint32 opcode = *((uint32 *)r->nip);
1781	>	uint32 opcode = *((uint32 *)r->pc());
1782		uint32 primop = opcode >> 26;
1783		uint32 exop = (opcode >> 1) & 0x3ff;
1784		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1579 | Line 1789 | static void sigill_handler(int sig, sigc
1789		switch (primop) {
1790		case 9:         // POWER instructions
1791		case 22:
1792	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
1792	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
1793		ErrorAlert(str);
1794		QuitEmulator();
1795		return;
#	Line 1587 | Line 1797 | power_inst:            sprintf(str, GetString(STR_
1797		case 31:
1798		switch (exop) {
1799		case 83:        // mfmsr
1800	<	r->gpr[rd] = 0xf072;
1801	<	r->nip += 4;
1800	>	r->gpr(rd) = 0xf072;
1801	>	r->pc() += 4;
1802		goto rti;
1803
1804		case 210:       // mtsr
1805		case 242:       // mtsrin
1806		case 306:       // tlbie
1807	<	r->nip += 4;
1807	>	r->pc() += 4;
1808		goto rti;
1809
1810		case 339: {     // mfspr
#	Line 1610 | Line 1820 | power_inst:            sprintf(str, GetString(STR_
1820		case 957:       // PMC3
1821		case 958:       // PMC4
1822		case 959:       // SDA
1823	<	r->nip += 4;
1823	>	r->pc() += 4;
1824		goto rti;
1825		case 25:        // SDR1
1826	<	r->gpr[rd] = 0xdead001f;
1827	<	r->nip += 4;
1826	>	r->gpr(rd) = 0xdead001f;
1827	>	r->pc() += 4;
1828		goto rti;
1829		case 287:       // PVR
1830	<	r->gpr[rd] = PVR;
1831	<	r->nip += 4;
1830	>	r->gpr(rd) = PVR;
1831	>	r->pc() += 4;
1832		goto rti;
1833		}
1834		break;
#	Line 1654 | Line 1864 | power_inst:            sprintf(str, GetString(STR_
1864		case 957:       // PMC3
1865		case 958:       // PMC4
1866		case 959:       // SDA
1867	<	r->nip += 4;
1867	>	r->pc() += 4;
1868		goto rti;
1869		}
1870		break;
#	Line 1673 | Line 1883 | power_inst:            sprintf(str, GetString(STR_
1883
1884		// In GUI mode, show error alert
1885		if (!PrefsFindBool("nogui")) {
1886	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1886	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1887		ErrorAlert(str);
1888		QuitEmulator();
1889		return;
#	Line 1681 | Line 1891 | power_inst:            sprintf(str, GetString(STR_
1891		}
1892
1893		// For all other errors, jump into debugger (sort of...)
1894	+	crash_reason = "SIGILL";
1895		if (!ready_for_signals) {
1896	<	printf("SIGILL\n");
1897	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1896	>	printf("%s\n");
1897	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1898		printf(
1899		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1900		"  xer %08lx     cr %08lx  \n"
#	Line 1695 | Line 1906 | power_inst:            sprintf(str, GetString(STR_
1906		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1907		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1908		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1909	<	r->nip, r->link, r->ctr, r->msr,
1910	<	r->xer, r->ccr,
1911	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1912	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1913	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1914	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1915	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1916	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1917	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1918	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1909	>	crash_reason,
1910	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1911	>	r->xer(), r->cr(),
1912	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1913	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1914	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1915	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1916	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1917	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1918	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1919	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1920		exit(1);
1921		QuitEmulator();
1922		return;
1923		} else {
1924		// We crashed. Save registers, tell tick thread and loop forever
1925	<	sigsegv_regs = *(sigregs *)r;
1925	>	build_sigregs(&sigsegv_regs, r);
1926		emul_thread_fatal = true;
1927		for (;;) ;
1928		}
#	Line 1720 | Line 1932 | rti:;
1932
1933
1934		/*
1935	+	*  Helpers to share 32-bit addressable data with MacOS
1936	+	*/
1937	+
1938	+	bool SheepMem::Init(void)
1939	+	{
1940	+	// Size of a native page
1941	+	page_size = getpagesize();
1942	+
1943	+	// Allocate SheepShaver globals
1944	+	if (vm_acquire_fixed((char *)base, size) < 0)
1945	+	return false;
1946	+
1947	+	// Allocate page with all bits set to 0
1948	+	zero_page = base + size;
1949	+	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
1950	+	return false;
1951	+	memset((char *)zero_page, 0, page_size);
1952	+	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
1953	+	return false;
1954	+
1955	+	#if EMULATED_PPC
1956	+	// Allocate alternate stack for PowerPC interrupt routine
1957	+	sig_stack = zero_page + page_size;
1958	+	if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0)
1959	+	return false;
1960	+	#endif
1961	+
1962	+	top = base + size;
1963	+	return true;
1964	+	}
1965	+
1966	+	void SheepMem::Exit(void)
1967	+	{
1968	+	if (top) {
1969	+	// Delete SheepShaver globals
1970	+	vm_release((void *)base, size);
1971	+
1972	+	// Delete zero page
1973	+	vm_release((void *)zero_page, page_size);
1974	+
1975	+	#if EMULATED_PPC
1976	+	// Delete alternate stack for PowerPC interrupt routine
1977	+	vm_release((void *)sig_stack, SIG_STACK_SIZE);
1978	+	#endif
1979	+	}
1980	+	}
1981	+
1982	+
1983	+	/*
1984		*  Display alert
1985		*/
1986

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