[ViewVC] Diff of: cebix/SheepShaver/src/Unix/main

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.8 by gbeauche, 2003-09-29T15:46:07Z vs.
Revision 1.33 by gbeauche, 2004-04-14T20:25:26Z

#	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 65 \| Line 65
65		* ExecutePPC (or any function that might cause a mode switch). The signal
66		* stack is restored before exiting the SIGUSR2 handler.
67		*
68	+	* There is apparently another problem when processing signals. In
69	+	* fullscreen mode, we get quick updates of the mouse position. This
70	+	* causes an increased number of calls to TriggerInterrupt(). And,
71	+	* since IRQ_NEST is not fully handled atomically, nested calls to
72	+	* ppc_interrupt() may cause stack corruption to eventually crash the
73	+	* emulator.
74	+	*
75	+	* FIXME:
76	+	* The current solution is to allocate another signal stack when
77	+	* processing ppc_interrupt(). However, it may be better to detect
78	+	* the INTFLAG_ADB case and handle it specifically with some extra mutex?
79	+	*
80		* TODO:
81		* check if SIGSEGV handler works for all registers (including FP!)
82		*/
#	Line 109 \| Line 121
121		#include "user_strings.h"
122		#include "vm_alloc.h"
123		#include "sigsegv.h"
124	+	#include "thunks.h"
125
126		#define DEBUG 0
127		#include "debug.h"
#	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 140 \| Line 156
156		// Interrupts in native mode?
157		#define INTERRUPTS_IN_NATIVE_MODE 1
158
159	+	// Number of alternate stacks for signal handlers?
160	+	#define SIG_STACK_COUNT 4
161	+
162
163		// Constants
164		const char ROM_FILE_NAME[] = "ROM";
165		const char ROM_FILE_NAME2[] = "Mac OS ROM";
166
167	<	const uint32 RAM_BASE = 0x20000000; // Base address of RAM
167	>	const uintptr RAM_BASE = 0x20000000; // Base address of RAM
168		const uint32 SIG_STACK_SIZE = 0x10000; // Size of signal stack
169
170
171		#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	–
172		struct sigregs {
173	<	elf_gregset_t gp_regs; // Identical to pt_regs
174	<	double fp_regs[ELF_NFPREG]; // f0..f31 and fpsrc
175	<	//more (uninteresting) stuff following here
173	>	uint32 nip;
174	>	uint32 link;
175	>	uint32 ctr;
176	>	uint32 msr;
177	>	uint32 xer;
178	>	uint32 ccr;
179	>	uint32 gpr[32];
180	>	};
181	>
182	>	#if defined(__linux__)
183	>	#include <sys/ucontext.h>
184	>	#define MACHINE_REGISTERS(scp) ((machine_regs )(((ucontext_t )scp)->uc_mcontext.regs))
185	>
186	>	struct machine_regs : public pt_regs
187	>	{
188	>	u_long & cr() { return pt_regs::ccr; }
189	>	uint32 cr() const { return pt_regs::ccr; }
190	>	uint32 lr() const { return pt_regs::link; }
191	>	uint32 ctr() const { return pt_regs::ctr; }
192	>	uint32 xer() const { return pt_regs::xer; }
193	>	uint32 msr() const { return pt_regs::msr; }
194	>	uint32 dar() const { return pt_regs::dar; }
195	>	u_long & pc() { return pt_regs::nip; }
196	>	uint32 pc() const { return pt_regs::nip; }
197	>	u_long & gpr(int i) { return pt_regs::gpr[i]; }
198	>	uint32 gpr(int i) const { return pt_regs::gpr[i]; }
199		};
200		#endif
201
202	+	#if defined(__APPLE__) && defined(__MACH__)
203	+	#include <sys/signal.h>
204	+	extern "C" int sigaltstack(const struct sigaltstack ss, struct sigaltstack oss);
205	+
206	+	#include <sys/ucontext.h>
207	+	#define MACHINE_REGISTERS(scp) ((machine_regs )(((ucontext_t )scp)->uc_mcontext))
208	+
209	+	struct machine_regs : public mcontext
210	+	{
211	+	uint32 & cr() { return ss.cr; }
212	+	uint32 cr() const { return ss.cr; }
213	+	uint32 lr() const { return ss.lr; }
214	+	uint32 ctr() const { return ss.ctr; }
215	+	uint32 xer() const { return ss.xer; }
216	+	uint32 msr() const { return ss.srr1; }
217	+	uint32 dar() const { return es.dar; }
218	+	uint32 & pc() { return ss.srr0; }
219	+	uint32 pc() const { return ss.srr0; }
220	+	uint32 & gpr(int i) { return (&ss.r0)[i]; }
221	+	uint32 gpr(int i) const { return (&ss.r0)[i]; }
222	+	};
223	+	#endif
224	+
225	+	static void build_sigregs(sigregs srp, machine_regs mrp)
226	+	{
227	+	srp->nip = mrp->pc();
228	+	srp->link = mrp->lr();
229	+	srp->ctr = mrp->ctr();
230	+	srp->msr = mrp->msr();
231	+	srp->xer = mrp->xer();
232	+	srp->ccr = mrp->cr();
233	+	for (int i = 0; i < 32; i++)
234	+	srp->gpr[i] = mrp->gpr(i);
235	+	}
236	+
237	+	static struct sigaltstack sig_stacks[SIG_STACK_COUNT]; // Stacks for signal handlers
238	+	static int sig_stack_id = 0; // Stack slot currently used
239	+
240	+	static inline void sig_stack_acquire(void)
241	+	{
242	+	if (++sig_stack_id == SIG_STACK_COUNT) {
243	+	printf("FATAL: signal stack overflow\n");
244	+	return;
245	+	}
246	+	sigaltstack(&sig_stacks[sig_stack_id], NULL);
247	+	}
248	+
249	+	static inline void sig_stack_release(void)
250	+	{
251	+	if (--sig_stack_id < 0) {
252	+	printf("FATAL: signal stack underflow\n");
253	+	return;
254	+	}
255	+	sigaltstack(&sig_stacks[sig_stack_id], NULL);
256	+	}
257	+	#endif
258	+
259
260		// Global variables (exported)
261		#if !EMULATED_PPC
#	Line 172 \| Line 263 \| *void TOC; // Small data pointer (r13**
263		#endif
264		uint32 RAMBase; // Base address of Mac RAM
265		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
266		uint32 KernelDataAddr; // Address of Kernel Data
267		uint32 BootGlobsAddr; // Address of BootGlobs structure at top of Mac RAM
268		uint32 PVR; // Theoretical PVR
#	Line 183 \| Line 271 \| int64 BusClockSpeed; // Bus clock speed
271
272
273		// Global variables
274	<	static char *x_display_name = NULL; // X11 display name
274	>	char *x_display_name = NULL; // X11 display name
275		Display *x_display = NULL; // X11 display handle
276	+	#ifdef X11_LOCK_TYPE
277	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
278	+	#endif
279
280		static int zero_fd = 0; // FD of /dev/zero
190	–	static bool sheep_area_mapped = false; // Flag: SheepShaver data area mmap()ed
281		static bool lm_area_mapped = false; // Flag: Low Memory area mmap()ped
282		static int kernel_area = -1; // SHM ID of Kernel Data area
283		static bool rom_area_mapped = false; // Flag: Mac ROM mmap()ped
#	Line 207 \| Line 297 \| static bool ready_for_signals = false;
297		static int64 num_segv = 0; // Number of handled SEGV signals
298
299		static struct sigaction sigusr2_action; // Interrupt signal (of emulator thread)
300	<	#if !EMULATED_PPC
300	>	#if EMULATED_PPC
301	>	static uintptr sig_stack = 0; // Stack for PowerPC interrupt routine
302	>	#else
303		static struct sigaction sigsegv_action; // Data access exception signal (of emulator thread)
304		static struct sigaction sigill_action; // Illegal instruction signal (of emulator thread)
213	–	static void *sig_stack = NULL; // Stack for signal handlers
214	–	static void *extra_stack = NULL; // Stack for SIGSEGV inside interrupt handler
305		static bool emul_thread_fatal = false; // Flag: MacOS thread crashed, tick thread shall dump debug output
306		static sigregs sigsegv_regs; // Register dump when crashed
307	+	static const char *crash_reason = NULL; // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
308		#endif
309
310	+	uint32 SheepMem::page_size; // Size of a native page
311	+	uintptr SheepMem::zero_page = 0; // Address of ro page filled in with zeros
312	+	uintptr SheepMem::base = 0x60000000; // Address of SheepShaver data
313	+	uintptr SheepMem::top = 0; // Top of SheepShaver data (stack like storage)
314	+
315
316		// Prototypes
317		static void Quit(void);
#	Line 224 \| Line 320 \| *static void nvram_func(void arg);*
320		static void tick_func(void arg);
321		#if EMULATED_PPC
322		static void sigusr2_handler(int sig);
323	+	extern void emul_ppc(uint32 start);
324	+	extern void init_emul_ppc(void);
325	+	extern void exit_emul_ppc(void);
326		#else
327	<	static void sigusr2_handler(int sig, sigcontext_struct *sc);
328	<	static void sigsegv_handler(int sig, sigcontext_struct *sc);
329	<	static void sigill_handler(int sig, sigcontext_struct *sc);
327	>	static void sigusr2_handler(int sig, siginfo_t sip, void scp);
328	>	static void sigsegv_handler(int sig, siginfo_t sip, void scp);
329	>	static void sigill_handler(int sig, siginfo_t sip, void scp);
330		#endif
331
332
333		// From asm_linux.S
334	<	#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
334	>	#if !EMULATED_PPC
335		extern "C" void *get_toc(void);
336		extern "C" void *get_sp(void);
337		extern "C" void flush_icache_range(void start, void end);
#	Line 251 \| Line 346 \| extern void paranoia_check(void);
346		#endif
347
348
349	+	#if EMULATED_PPC
350	+	/*
351	+	* Return signal stack base
352	+	*/
353	+
354	+	uintptr SignalStackBase(void)
355	+	{
356	+	return sig_stack + SIG_STACK_SIZE;
357	+	}
358	+
359	+
360	+	/*
361	+	* Atomic operations
362	+	*/
363	+
364	+	#if HAVE_SPINLOCKS
365	+	static spinlock_t atomic_ops_lock = SPIN_LOCK_UNLOCKED;
366	+	#else
367	+	#define spin_lock(LOCK)
368	+	#define spin_unlock(LOCK)
369	+	#endif
370	+
371	+	int atomic_add(int *var, int v)
372	+	{
373	+	spin_lock(&atomic_ops_lock);
374	+	int ret = *var;
375	+	*var += v;
376	+	spin_unlock(&atomic_ops_lock);
377	+	return ret;
378	+	}
379	+
380	+	int atomic_and(int *var, int v)
381	+	{
382	+	spin_lock(&atomic_ops_lock);
383	+	int ret = *var;
384	+	*var &= v;
385	+	spin_unlock(&atomic_ops_lock);
386	+	return ret;
387	+	}
388	+
389	+	int atomic_or(int *var, int v)
390	+	{
391	+	spin_lock(&atomic_ops_lock);
392	+	int ret = *var;
393	+	*var \|= v;
394	+	spin_unlock(&atomic_ops_lock);
395	+	return ret;
396	+	}
397	+	#endif
398	+
399	+
400		/*
401		* Main program
402		*/
#	Line 269 \| Line 415 \| int main(int argc, char argv)**
415		char str[256];
416		uint32 *boot_globs;
417		int16 i16;
272	–	int drive, driver;
418		int rom_fd;
419		FILE *proc_file;
420		const char *rom_path;
#	Line 336 \| Line 481 \| int main(int argc, char argv)**
481		PVR = 0x00040000; // Default: 604
482		CPUClockSpeed = 100000000; // Default: 100MHz
483		BusClockSpeed = 100000000; // Default: 100MHz
484	<	#if !EMULATED_PPC
484	>	#if EMULATED_PPC
485	>	PVR = 0x000c0000; // Default: 7400 (with AltiVec)
486	>	#else
487		proc_file = fopen("/proc/cpuinfo", "r");
488		if (proc_file) {
489		char line[256];
#	Line 350 \| Line 497 \| int main(int argc, char argv)**
497		// Parse line
498		int i;
499		char value[256];
500	<	if (sscanf(line, "cpu : %s", value) == 1) {
500	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
501		if (strcmp(value, "601") == 0)
502		PVR = 0x00010000;
503		else if (strcmp(value, "603") == 0)
#	Line 371 \| Line 518 \| int main(int argc, char argv)**
518		PVR = 0x00320000;
519		else if (strcmp(value, "860") == 0)
520		PVR = 0x00500000;
521	+	else if (strcmp(value, "7400") == 0)
522	+	PVR = 0x000c0000;
523	+	else if (strcmp(value, "7410") == 0)
524	+	PVR = 0x800c0000;
525		else
526		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
527		}
#	Line 406 \| Line 557 \| int main(int argc, char argv)**
557		goto quit;
558		}
559
560	+	#ifndef PAGEZERO_HACK
561		// Create Low Memory area (0x0000..0x3000)
562		if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
563		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
#	Line 413 \| Line 565 \| int main(int argc, char argv)**
565		goto quit;
566		}
567		lm_area_mapped = true;
568	+	#endif
569
570		// Create areas for Kernel Data
571		kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
#	Line 431 \| Line 584 \| int main(int argc, char argv)**
584		ErrorAlert(str);
585		goto quit;
586		}
587	<	kernel_data = (KernelData *)0x68ffe000;
587	>	kernel_data = (KernelData *)KERNEL_DATA_BASE;
588		emulator_data = &kernel_data->ed;
589	<	KernelDataAddr = (uint32)kernel_data;
589	>	KernelDataAddr = KERNEL_DATA_BASE;
590		D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
591
592		// Create area for SheepShaver data
593	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
593	>	if (!SheepMem::Init()) {
594		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
595		ErrorAlert(str);
596		goto quit;
597		}
445	–	SheepStack1Base = SHEEP_BASE + 0x10000;
446	–	SheepStack2Base = SheepStack1Base + 0x10000;
447	–	SheepThunksBase = SheepStack2Base + 0x1000;
448	–	sheep_area_mapped = true;
598
599		// Create area for Mac ROM
600		if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
#	Line 453 \| Line 602 \| int main(int argc, char argv)**
602		ErrorAlert(str);
603		goto quit;
604		}
605	<	#if !EMULATED_PPC \|\| defined(__powerpc__)
605	>	#if !EMULATED_PPC
606		if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ \| VM_PAGE_WRITE \| VM_PAGE_EXECUTE) < 0) {
607		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
608		ErrorAlert(str);
#	Line 523 \| Line 672 \| int main(int argc, char argv)**
672		// Load NVRAM
673		XPRAMInit();
674
675	+	// Load XPRAM default values if signature not found
676	+	if (XPRAM[0x130c] != 0x4e \|\| XPRAM[0x130d] != 0x75
677	+	\|\| XPRAM[0x130e] != 0x4d \|\| XPRAM[0x130f] != 0x63) {
678	+	D(bug("Loading XPRAM default values\n"));
679	+	memset(XPRAM + 0x1300, 0, 0x100);
680	+	XPRAM[0x130c] = 0x4e; // "NuMc" signature
681	+	XPRAM[0x130d] = 0x75;
682	+	XPRAM[0x130e] = 0x4d;
683	+	XPRAM[0x130f] = 0x63;
684	+	XPRAM[0x1301] = 0x80; // InternalWaitFlags = DynWait (don't wait for SCSI devices upon bootup)
685	+	XPRAM[0x1310] = 0xa8; // Standard PRAM values
686	+	XPRAM[0x1311] = 0x00;
687	+	XPRAM[0x1312] = 0x00;
688	+	XPRAM[0x1313] = 0x22;
689	+	XPRAM[0x1314] = 0xcc;
690	+	XPRAM[0x1315] = 0x0a;
691	+	XPRAM[0x1316] = 0xcc;
692	+	XPRAM[0x1317] = 0x0a;
693	+	XPRAM[0x131c] = 0x00;
694	+	XPRAM[0x131d] = 0x02;
695	+	XPRAM[0x131e] = 0x63;
696	+	XPRAM[0x131f] = 0x00;
697	+	XPRAM[0x1308] = 0x13;
698	+	XPRAM[0x1309] = 0x88;
699	+	XPRAM[0x130a] = 0x00;
700	+	XPRAM[0x130b] = 0xcc;
701	+	XPRAM[0x1376] = 0x00; // OSDefault = MacOS
702	+	XPRAM[0x1377] = 0x01;
703	+	}
704	+
705		// Set boot volume
706	<	drive = PrefsFindInt32("bootdrive");
706	>	i16 = PrefsFindInt32("bootdrive");
707		XPRAM[0x1378] = i16 >> 8;
708		XPRAM[0x1379] = i16 & 0xff;
709	<	driver = PrefsFindInt32("bootdriver");
709	>	i16 = PrefsFindInt32("bootdriver");
710		XPRAM[0x137a] = i16 >> 8;
711		XPRAM[0x137b] = i16 & 0xff;
712
#	Line 540 \| Line 719 \| int main(int argc, char argv)**
719		boot_globs[1] = htonl(RAMSize);
720		boot_globs[2] = htonl((uint32)-1); // End of bank table
721
722	+	// Init thunks
723	+	if (!ThunksInit())
724	+	goto quit;
725	+
726		// Init drivers
727		SonyInit();
728		DiskInit();
#	Line 549 \| Line 732 \| int main(int argc, char argv)**
732		// Init external file system
733		ExtFSInit();
734
735	+	// Init ADB
736	+	ADBInit();
737	+
738		// Init audio
739		AudioInit();
740
#	Line 583 \| Line 769 \| int main(int argc, char argv)**
769		// Initialize Kernel Data
770		memset(kernel_data, 0, sizeof(KernelData));
771		if (ROMType == ROMTYPE_NEWWORLD) {
772	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
773	<	static uint8 vector_lookup_tbl[128];
774	<	static uint8 vector_mask_tbl[64];
772	>	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
773	>	memset((void )of_dev_tree, 0, 4 sizeof(uint32));
774	>	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
775	>	uintptr vector_mask_tbl = SheepMem::Reserve(64);
776		memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
777	<	memset(vector_lookup_tbl, 0, 128);
778	<	memset(vector_mask_tbl, 0, 64);
777	>	memset((void *)vector_lookup_tbl, 0, 128);
778	>	memset((void *)vector_mask_tbl, 0, 64);
779		kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
780	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree); // OF device tree base
781	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
782	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
780	>	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree); // OF device tree base
781	>	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
782	>	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
783		kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE); // OpenPIC base
784		kernel_data->v[0xbb0 >> 2] = htonl(0); // ADB base
785		kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
#	Line 628 \| Line 815 \| int main(int argc, char argv)**
815		D(bug("Initializing Low Memory...\n"));
816		memset(NULL, 0, 0x3000);
817		WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h')); // Signature to detect SheepShaver
818	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data); // For trap replacement routines
818	>	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr); // For trap replacement routines
819		WriteMacInt32(XLM_PVR, PVR); // Theoretical PVR
820		WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed); // For DriverServicesLib patch
821		WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN); // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
822	<	#if EMULATED_PPC
823	<	WriteMacInt32(XLM_ETHER_INIT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_INIT));
824	<	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);
822	>	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage()); // Pointer to read-only page with all bits set to 0
823	>	#if !EMULATED_PPC
824	>	WriteMacInt32(XLM_TOC, (uint32)TOC); // TOC pointer of emulator
825		#endif
826	+	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT)); // DLPI ethernet driver functions
827	+	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
828	+	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
829	+	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
830	+	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
831	+	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
832	+	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
833		D(bug("Low Memory initialized\n"));
834
835		// Start 60Hz thread
#	Line 663 \| Line 843 \| int main(int argc, char argv)**
843
844		#if !EMULATED_PPC
845		// Create and install stacks for signal handlers
846	<	sig_stack = malloc(SIG_STACK_SIZE);
847	<	D(bug("Signal stack at %p\n", sig_stack));
848	<	if (sig_stack == NULL) {
849	<	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
850	<	goto quit;
851	<	}
852	<	extra_stack = malloc(SIG_STACK_SIZE);
853	<	D(bug("Extra stack at %p\n", extra_stack));
854	<	if (extra_stack == NULL) {
855	<	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
676	<	goto quit;
846	>	for (int i = 0; i < SIG_STACK_COUNT; i++) {
847	>	void *sig_stack = malloc(SIG_STACK_SIZE);
848	>	D(bug("Signal stack %d at %p\n", i, sig_stack));
849	>	if (sig_stack == NULL) {
850	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
851	>	goto quit;
852	>	}
853	>	sig_stacks[i].ss_sp = sig_stack;
854	>	sig_stacks[i].ss_flags = 0;
855	>	sig_stacks[i].ss_size = SIG_STACK_SIZE;
856		}
857	<	struct sigaltstack new_stack;
858	<	new_stack.ss_sp = sig_stack;
680	<	new_stack.ss_flags = 0;
681	<	new_stack.ss_size = SIG_STACK_SIZE;
682	<	if (sigaltstack(&new_stack, NULL) < 0) {
857	>	sig_stack_id = 0;
858	>	if (sigaltstack(&sig_stacks[0], NULL) < 0) {
859		sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
860		ErrorAlert(str);
861		goto quit;
#	Line 687 \| Line 863 \| int main(int argc, char argv)**
863		#endif
864
865		#if !EMULATED_PPC
866	<	// Install SIGSEGV handler
866	>	// Install SIGSEGV and SIGBUS handlers
867		sigemptyset(&sigsegv_action.sa_mask); // Block interrupts during SEGV handling
868		sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
869	<	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
870	<	sigsegv_action.sa_flags = SA_ONSTACK;
869	>	sigsegv_action.sa_sigaction = sigsegv_handler;
870	>	sigsegv_action.sa_flags = SA_ONSTACK \| SA_SIGINFO;
871	>	#ifdef HAVE_SIGNAL_SA_RESTORER
872		sigsegv_action.sa_restorer = NULL;
873	+	#endif
874		if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
875		sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
876		ErrorAlert(str);
877		goto quit;
878		}
879	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
880	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
881	+	ErrorAlert(str);
882	+	goto quit;
883	+	}
884
885		// Install SIGILL handler
886		sigemptyset(&sigill_action.sa_mask); // Block interrupts during ILL handling
887		sigaddset(&sigill_action.sa_mask, SIGUSR2);
888	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
889	<	sigill_action.sa_flags = SA_ONSTACK;
888	>	sigill_action.sa_sigaction = sigill_handler;
889	>	sigill_action.sa_flags = SA_ONSTACK \| SA_SIGINFO;
890	>	#ifdef HAVE_SIGNAL_SA_RESTORER
891		sigill_action.sa_restorer = NULL;
892	+	#endif
893		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
894		sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
895		ErrorAlert(str);
#	Line 712 \| Line 897 \| int main(int argc, char argv)**
897		}
898		#endif
899
900	+	#if !EMULATED_PPC
901		// Install interrupt signal handler
902		sigemptyset(&sigusr2_action.sa_mask);
903	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
904	<	sigusr2_action.sa_flags = 0;
905	<	#if !EMULATED_PPC
720	<	sigusr2_action.sa_flags = SA_ONSTACK \| SA_RESTART;
721	<	#endif
903	>	sigusr2_action.sa_sigaction = sigusr2_handler;
904	>	sigusr2_action.sa_flags = SA_ONSTACK \| SA_RESTART \| SA_SIGINFO;
905	>	#ifdef HAVE_SIGNAL_SA_RESTORER
906		sigusr2_action.sa_restorer = NULL;
907	+	#endif
908		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
909		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
910		ErrorAlert(str);
911		goto quit;
912		}
913	+	#endif
914
915		// Get my thread ID and execute MacOS thread function
916		emul_thread = pthread_self();
#	Line 743 \| Line 929 \| quit:
929
930		static void Quit(void)
931		{
932	+	#if EMULATED_PPC
933	+	// Exit PowerPC emulation
934	+	exit_emul_ppc();
935	+	#endif
936	+
937		// Stop 60Hz thread
938		if (tick_thread_active) {
939		pthread_cancel(tick_thread);
#	Line 756 \| Line 947 \| static void Quit(void)
947		}
948
949		#if !EMULATED_PPC
950	<	// Uninstall SIGSEGV handler
950	>	// Uninstall SIGSEGV and SIGBUS handlers
951		sigemptyset(&sigsegv_action.sa_mask);
952		sigsegv_action.sa_handler = SIG_DFL;
953		sigsegv_action.sa_flags = 0;
954		sigaction(SIGSEGV, &sigsegv_action, NULL);
955	+	sigaction(SIGBUS, &sigsegv_action, NULL);
956
957		// Uninstall SIGILL handler
958		sigemptyset(&sigill_action.sa_mask);
959		sigill_action.sa_handler = SIG_DFL;
960		sigill_action.sa_flags = 0;
961		sigaction(SIGILL, &sigill_action, NULL);
962	+
963	+	// Delete stacks for signal handlers
964	+	for (int i = 0; i < SIG_STACK_COUNT; i++) {
965	+	void *sig_stack = sig_stacks[i].ss_sp;
966	+	if (sig_stack)
967	+	free(sig_stack);
968	+	}
969		#endif
970
971		// Save NVRAM
#	Line 787 \| Line 986 \| static void Quit(void)
986		// Exit audio
987		AudioExit();
988
989	+	// Exit ADB
990	+	ADBExit();
991	+
992		// Exit video
993		VideoExit();
994
#	Line 799 \| Line 1001 \| static void Quit(void)
1001		DiskExit();
1002		SonyExit();
1003
1004	+	// Delete thunks
1005	+	ThunksExit();
1006	+
1007	+	// Delete SheepShaver globals
1008	+	SheepMem::Exit();
1009	+
1010		// Delete RAM area
1011		if (ram_area_mapped)
1012		vm_release((char *)RAM_BASE, RAMSize);
#	Line 846 \| Line 1054 \| static void Quit(void)
1054		*/
1055
1056		#if EMULATED_PPC
849	–	extern void emul_ppc(uint32 start);
850	–	extern void init_emul_ppc(void);
1057		void jump_to_rom(uint32 entry)
1058		{
1059		init_emul_ppc();
#	Line 912 \| Line 1118 \| void Execute68kTrap(uint16 trap, M68kReg
1118		uint16 proc[2] = {trap, M68K_RTS};
1119		Execute68k((uint32)proc, r);
1120		}
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	–	}
1121		#endif
1122
1123
#	Line 987 \| Line 1180 \| *void Dump68kRegs(M68kRegisters r)**
1180
1181		void MakeExecutable(int dummy, void *start, uint32 length)
1182		{
1183	<	#if !EMULATED_PPC
991	<	if (((uint32)start >= ROM_BASE) && ((uint32)start < (ROM_BASE + ROM_SIZE)))
1183	>	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1184		return;
1185	<	flush_icache_range(start, (void *)((uint32)start + length));
1185	>	#if EMULATED_PPC
1186	>	FlushCodeCache((uintptr)start, (uintptr)start + length);
1187	>	#else
1188	>	flush_icache_range(start, (void *)((uintptr)start + length));
1189		#endif
1190		}
1191
#	Line 1001 \| Line 1196 \| *void MakeExecutable(int dummy, void sta**
1196
1197		void PatchAfterStartup(void)
1198		{
1004	–	#if EMULATED_PPC
1199		ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1006	–	#else
1007	–	ExecutePPC(VideoInstallAccel);
1008	–	#endif
1200		InstallExtFS();
1201		}
1202
#	Line 1050 \| Line 1241 \| *static void tick_func(void arg)*
1241		if (emul_thread_fatal) {
1242
1243		// Yes, dump registers
1244	<	pt_regs r = (pt_regs )&sigsegv_regs;
1244	>	sigregs *r = &sigsegv_regs;
1245		char str[256];
1246	<	sprintf(str, "SIGSEGV\n"
1246	>	if (crash_reason == NULL)
1247	>	crash_reason = "SIGSEGV";
1248	>	sprintf(str, "%s\n"
1249		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
1250		" xer %08lx cr %08lx \n"
1251		" r0 %08lx r1 %08lx r2 %08lx r3 %08lx\n"
#	Line 1063 \| Line 1256 \| *static void tick_func(void arg)*
1256		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1257		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1258		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1259	+	crash_reason,
1260		r->nip, r->link, r->ctr, r->msr,
1261		r->xer, r->ccr,
1262		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1108 \| Line 1302 \| *static void tick_func(void arg)*
1302
1303		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1304		{
1305	<	// nothing to do
1305	>	#ifdef HAVE_PTHREADS
1306	>	pthread_attr_init(attr);
1307	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1308	>	// Some of these only work for superuser
1309	>	if (geteuid() == 0) {
1310	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1311	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1312	>	struct sched_param fifo_param;
1313	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1314	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1315	>	priority);
1316	>	pthread_attr_setschedparam(attr, &fifo_param);
1317	>	}
1318	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1319	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1320	>	// If system scope is not available (eg. we're not running
1321	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1322	>	// scope. It exposes pthread scheduling to the kernel,
1323	>	// without setting realtime priority.
1324	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1325	>	#endif
1326	>	}
1327	>	#endif
1328	>	#endif
1329		}
1330
1331
#	Line 1254 \| Line 1471 \| static void sigusr2_handler(int sig)
1471		#endif
1472		}
1473		#else
1474	<	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1474	>	static void sigusr2_handler(int sig, siginfo_t sip, void scp)
1475		{
1476	<	pt_regs *r = sc->regs;
1476	>	machine_regs *r = MACHINE_REGISTERS(scp);
1477
1478		// Do nothing if interrupts are disabled
1479		if ((int32 )XLM_IRQ_NEST > 0)
#	Line 1270 \| Line 1487 \| static void sigusr2_handler(int sig, sig
1487		case MODE_68K:
1488		// 68k emulator active, trigger 68k interrupt level 1
1489		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1490	<	r->ccr \|= ntohl(kernel_data->v[0x674 >> 2]);
1490	>	r->cr() \|= ntohl(kernel_data->v[0x674 >> 2]);
1491		break;
1492
1493		#if INTERRUPTS_IN_NATIVE_MODE
1494		case MODE_NATIVE:
1495		// 68k emulator inactive, in nanokernel?
1496	<	if (r->gpr[1] != KernelDataAddr) {
1496	>	if (r->gpr(1) != KernelDataAddr) {
1497	>
1498	>	// Set extra stack for nested interrupts
1499	>	sig_stack_acquire();
1500	>
1501		// Prepare for 68k interrupt level 1
1502		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1503		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) \| ntohl(kernel_data->v[0x674 >> 2]));
1504
1505		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1506	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1506	>	DisableInterrupt();
1507		if (ROMType == ROMTYPE_NEWWORLD)
1508		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1509		else
1510		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1511	+
1512	+	// Reset normal signal stack
1513	+	sig_stack_release();
1514		}
1515		break;
1516		#endif
#	Line 1297 \| Line 1521 \| static void sigusr2_handler(int sig, sig
1521		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1522
1523		// Set extra stack for SIGSEGV handler
1524	<	struct sigaltstack new_stack;
1301	<	new_stack.ss_sp = extra_stack;
1302	<	new_stack.ss_flags = 0;
1303	<	new_stack.ss_size = SIG_STACK_SIZE;
1304	<	sigaltstack(&new_stack, NULL);
1524	>	sig_stack_acquire();
1525		#if 1
1526		// Execute full 68k interrupt routine
1527		M68kRegisters r;
#	Line 1323 \| Line 1543 \| static void sigusr2_handler(int sig, sig
1543		if (InterruptFlags & INTFLAG_VIA) {
1544		ClearInterruptFlag(INTFLAG_VIA);
1545		ADBInterrupt();
1546	<	ExecutePPC(VideoVBL);
1546	>	ExecuteNative(NATIVE_VIDEO_VBL);
1547		}
1548		}
1549		#endif
1550		// Reset normal signal stack
1551	<	new_stack.ss_sp = sig_stack;
1332	<	new_stack.ss_flags = 0;
1333	<	new_stack.ss_size = SIG_STACK_SIZE;
1334	<	sigaltstack(&new_stack, NULL);
1551	>	sig_stack_release();
1552		}
1553		break;
1554		#endif
#	Line 1345 \| Line 1562 \| static void sigusr2_handler(int sig, sig
1562		*/
1563
1564		#if !EMULATED_PPC
1565	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1565	>	static void sigsegv_handler(int sig, siginfo_t sip, void scp)
1566		{
1567	<	pt_regs *r = sc->regs;
1567	>	machine_regs *r = MACHINE_REGISTERS(scp);
1568
1569		// Get effective address
1570	<	uint32 addr = r->dar;
1570	>	uint32 addr = r->dar();
1571
1572		#if ENABLE_VOSF
1573		// Handle screen fault.
1574		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1575	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1575	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1576		return;
1577		#endif
1578
1579		num_segv++;
1580
1581		// Fault in Mac ROM or RAM?
1582	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1582	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1583		if (mac_fault) {
1584
1585		// "VM settings" during MacOS 8 installation
1586	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1587	<	r->nip += 4;
1588	<	r->gpr[8] = 0;
1586	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1587	>	r->pc() += 4;
1588	>	r->gpr(8) = 0;
1589		return;
1590
1591		// MacOS 8.5 installation
1592	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1593	<	r->nip += 4;
1594	<	r->gpr[8] = 0;
1592	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1593	>	r->pc() += 4;
1594	>	r->gpr(8) = 0;
1595		return;
1596
1597		// MacOS 8 serial drivers on startup
1598	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 \|\| r->gpr[8] == 0xf3012000)) {
1599	<	r->nip += 4;
1600	<	r->gpr[8] = 0;
1598	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 \|\| r->gpr(8) == 0xf3012000)) {
1599	>	r->pc() += 4;
1600	>	r->gpr(8) = 0;
1601		return;
1602
1603		// MacOS 8.1 serial drivers on startup
1604	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 \|\| r->gpr[20] == 0xf3012000)) {
1605	<	r->nip += 4;
1604	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 \|\| r->gpr(20) == 0xf3012000)) {
1605	>	r->pc() += 4;
1606		return;
1607	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 \|\| r->gpr[20] == 0xf3012000)) {
1608	<	r->nip += 4;
1607	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 \|\| r->gpr(20) == 0xf3012000)) {
1608	>	r->pc() += 4;
1609		return;
1610		}
1611
1612		// Get opcode and divide into fields
1613	<	uint32 opcode = ((uint32 )r->nip);
1613	>	uint32 opcode = ((uint32 )r->pc());
1614		uint32 primop = opcode >> 26;
1615		uint32 exop = (opcode >> 1) & 0x3ff;
1616		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1482 \| Line 1699 \| static void sigsegv_handler(int sig, sig
1699		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1700		case 45: // sthu
1701		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1702	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1703	+	case 46: // lmw
1704	+	if ((addr % 4) != 0) {
1705	+	uint32 ea = addr;
1706	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1707	+	for (int i = rd; i <= 31; i++) {
1708	+	r->gpr(i) = ReadMacInt32(ea);
1709	+	ea += 4;
1710	+	}
1711	+	r->pc() += 4;
1712	+	goto rti;
1713	+	}
1714	+	break;
1715	+	case 47: // stmw
1716	+	if ((addr % 4) != 0) {
1717	+	uint32 ea = addr;
1718	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1719	+	for (int i = rd; i <= 31; i++) {
1720	+	WriteMacInt32(ea, r->gpr(i));
1721	+	ea += 4;
1722	+	}
1723	+	r->pc() += 4;
1724	+	goto rti;
1725	+	}
1726	+	break;
1727	+	#endif
1728		}
1729
1730	<	// Ignore ROM writes
1731	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1732	<	// 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));
1730	>	// Ignore ROM writes (including to the zero page, which is read-only)
1731	>	if (transfer_type == TYPE_STORE &&
1732	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) \|\|
1733	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1734	>	// 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()));
1735		if (addr_mode == MODE_U \|\| addr_mode == MODE_UX)
1736	<	r->gpr[ra] = addr;
1737	<	r->nip += 4;
1736	>	r->gpr(ra) = addr;
1737	>	r->pc() += 4;
1738		goto rti;
1739		}
1740
1741		// Ignore illegal memory accesses?
1742		if (PrefsFindBool("ignoresegv")) {
1743		if (addr_mode == MODE_U \|\| addr_mode == MODE_UX)
1744	<	r->gpr[ra] = addr;
1744	>	r->gpr(ra) = addr;
1745		if (transfer_type == TYPE_LOAD)
1746	<	r->gpr[rd] = 0;
1747	<	r->nip += 4;
1746	>	r->gpr(rd) = 0;
1747	>	r->pc() += 4;
1748		goto rti;
1749		}
1750
#	Line 1507 \| Line 1752 \| static void sigsegv_handler(int sig, sig
1752		if (!PrefsFindBool("nogui")) {
1753		char str[256];
1754		if (transfer_type == TYPE_LOAD \|\| transfer_type == TYPE_STORE)
1755	<	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]);
1755	>	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));
1756		else
1757	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1757	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1758		ErrorAlert(str);
1759		QuitEmulator();
1760		return;
#	Line 1517 \| Line 1762 \| static void sigsegv_handler(int sig, sig
1762		}
1763
1764		// For all other errors, jump into debugger (sort of...)
1765	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1766		if (!ready_for_signals) {
1767	<	printf("SIGSEGV\n");
1768	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1767	>	printf("%s\n");
1768	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1769		printf(
1770		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
1771		" xer %08lx cr %08lx \n"
#	Line 1531 \| Line 1777 \| static void sigsegv_handler(int sig, sig
1777		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1778		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1779		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1780	<	r->nip, r->link, r->ctr, r->msr,
1781	<	r->xer, r->ccr,
1782	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1783	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1784	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1785	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1786	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1787	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1788	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1789	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1780	>	crash_reason,
1781	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1782	>	r->xer(), r->cr(),
1783	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1784	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1785	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1786	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1787	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1788	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1789	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1790	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1791		exit(1);
1792		QuitEmulator();
1793		return;
1794		} else {
1795		// We crashed. Save registers, tell tick thread and loop forever
1796	<	sigsegv_regs = (sigregs )r;
1796	>	build_sigregs(&sigsegv_regs, r);
1797		emul_thread_fatal = true;
1798		for (;;) ;
1799		}
#	Line 1558 \| Line 1805 \| rti:;
1805		* SIGILL handler
1806		*/
1807
1808	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1808	>	static void sigill_handler(int sig, siginfo_t sip, void scp)
1809		{
1810	<	pt_regs *r = sc->regs;
1810	>	machine_regs *r = MACHINE_REGISTERS(scp);
1811		char str[256];
1812
1813		// Fault in Mac ROM or RAM?
1814	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1814	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1815		if (mac_fault) {
1816
1817		// Get opcode and divide into fields
1818	<	uint32 opcode = ((uint32 )r->nip);
1818	>	uint32 opcode = ((uint32 )r->pc());
1819		uint32 primop = opcode >> 26;
1820		uint32 exop = (opcode >> 1) & 0x3ff;
1821		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1579 \| Line 1826 \| static void sigill_handler(int sig, sigc
1826		switch (primop) {
1827		case 9: // POWER instructions
1828		case 22:
1829	<	power_inst: sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
1829	>	power_inst: sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
1830		ErrorAlert(str);
1831		QuitEmulator();
1832		return;
#	Line 1587 \| Line 1834 \| power_inst: sprintf(str, GetString(STR_
1834		case 31:
1835		switch (exop) {
1836		case 83: // mfmsr
1837	<	r->gpr[rd] = 0xf072;
1838	<	r->nip += 4;
1837	>	r->gpr(rd) = 0xf072;
1838	>	r->pc() += 4;
1839		goto rti;
1840
1841		case 210: // mtsr
1842		case 242: // mtsrin
1843		case 306: // tlbie
1844	<	r->nip += 4;
1844	>	r->pc() += 4;
1845		goto rti;
1846
1847		case 339: { // mfspr
#	Line 1610 \| Line 1857 \| power_inst: sprintf(str, GetString(STR_
1857		case 957: // PMC3
1858		case 958: // PMC4
1859		case 959: // SDA
1860	<	r->nip += 4;
1860	>	r->pc() += 4;
1861		goto rti;
1862		case 25: // SDR1
1863	<	r->gpr[rd] = 0xdead001f;
1864	<	r->nip += 4;
1863	>	r->gpr(rd) = 0xdead001f;
1864	>	r->pc() += 4;
1865		goto rti;
1866		case 287: // PVR
1867	<	r->gpr[rd] = PVR;
1868	<	r->nip += 4;
1867	>	r->gpr(rd) = PVR;
1868	>	r->pc() += 4;
1869		goto rti;
1870		}
1871		break;
#	Line 1654 \| Line 1901 \| power_inst: sprintf(str, GetString(STR_
1901		case 957: // PMC3
1902		case 958: // PMC4
1903		case 959: // SDA
1904	<	r->nip += 4;
1904	>	r->pc() += 4;
1905		goto rti;
1906		}
1907		break;
#	Line 1673 \| Line 1920 \| power_inst: sprintf(str, GetString(STR_
1920
1921		// In GUI mode, show error alert
1922		if (!PrefsFindBool("nogui")) {
1923	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1923	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1924		ErrorAlert(str);
1925		QuitEmulator();
1926		return;
#	Line 1681 \| Line 1928 \| power_inst: sprintf(str, GetString(STR_
1928		}
1929
1930		// For all other errors, jump into debugger (sort of...)
1931	+	crash_reason = "SIGILL";
1932		if (!ready_for_signals) {
1933	<	printf("SIGILL\n");
1934	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1933	>	printf("%s\n");
1934	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1935		printf(
1936		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
1937		" xer %08lx cr %08lx \n"
#	Line 1695 \| Line 1943 \| power_inst: sprintf(str, GetString(STR_
1943		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1944		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1945		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1946	<	r->nip, r->link, r->ctr, r->msr,
1947	<	r->xer, r->ccr,
1948	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1949	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1950	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1951	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1952	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1953	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1954	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1955	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1946	>	crash_reason,
1947	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1948	>	r->xer(), r->cr(),
1949	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1950	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1951	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1952	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1953	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1954	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1955	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1956	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1957		exit(1);
1958		QuitEmulator();
1959		return;
1960		} else {
1961		// We crashed. Save registers, tell tick thread and loop forever
1962	<	sigsegv_regs = (sigregs )r;
1962	>	build_sigregs(&sigsegv_regs, r);
1963		emul_thread_fatal = true;
1964		for (;;) ;
1965		}
#	Line 1720 \| Line 1969 \| rti:;
1969
1970
1971		/*
1972	+	* Helpers to share 32-bit addressable data with MacOS
1973	+	*/
1974	+
1975	+	bool SheepMem::Init(void)
1976	+	{
1977	+	// Size of a native page
1978	+	page_size = getpagesize();
1979	+
1980	+	// Allocate SheepShaver globals
1981	+	if (vm_acquire_fixed((char *)base, size) < 0)
1982	+	return false;
1983	+
1984	+	// Allocate page with all bits set to 0
1985	+	zero_page = base + size;
1986	+	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
1987	+	return false;
1988	+	memset((char *)zero_page, 0, page_size);
1989	+	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
1990	+	return false;
1991	+
1992	+	#if EMULATED_PPC
1993	+	// Allocate alternate stack for PowerPC interrupt routine
1994	+	sig_stack = zero_page + page_size;
1995	+	if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0)
1996	+	return false;
1997	+	#endif
1998	+
1999	+	top = base + size;
2000	+	return true;
2001	+	}
2002	+
2003	+	void SheepMem::Exit(void)
2004	+	{
2005	+	if (top) {
2006	+	// Delete SheepShaver globals
2007	+	vm_release((void *)base, size);
2008	+
2009	+	// Delete zero page
2010	+	vm_release((void *)zero_page, page_size);
2011	+
2012	+	#if EMULATED_PPC
2013	+	// Delete alternate stack for PowerPC interrupt routine
2014	+	vm_release((void *)sig_stack, SIG_STACK_SIZE);
2015	+	#endif
2016	+	}
2017	+	}
2018	+
2019	+
2020	+	/*
2021		* Display alert
2022		*/
2023

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents): Revision 1.8 by gbeauche, 2003-09-29T15:46:07Z vs. Revision 1.33 by gbeauche, 2004-04-14T20:25:26Z

Diff Legend

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.8 by gbeauche, 2003-09-29T15:46:07Z vs.
Revision 1.33 by gbeauche, 2004-04-14T20:25:26Z