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

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.13 by gbeauche, 2003-11-03T21:28:25Z vs.
Revision 1.34 by gbeauche, 2004-05-15T11:07:11Z

#	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 185 \| Line 273 \| int64 BusClockSpeed; // Bus clock speed
273		// Global variables
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 228 \| Line 324 \| 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
#	Line 252 \| Line 348 \| extern void paranoia_check(void);
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
#	Line 375 \| 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 389 \| 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 410 \| 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 421 \| Line 533 \| int main(int argc, char argv)**
533		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
534		WarningAlert(str);
535		}
536	+
537	+	// Get actual bus frequency
538	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
539	+	if (proc_file) {
540	+	union { uint8 b[4]; uint32 l; } value;
541	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
542	+	BusClockSpeed = value.l;
543	+	fclose(proc_file);
544	+	}
545		#endif
546		D(bug("PVR: %08x (assumed)\n", PVR));
547
#	Line 445 \| Line 566 \| int main(int argc, char argv)**
566		goto quit;
567		}
568
569	+	#ifndef PAGEZERO_HACK
570		// Create Low Memory area (0x0000..0x3000)
571		if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
572		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
#	Line 452 \| Line 574 \| int main(int argc, char argv)**
574		goto quit;
575		}
576		lm_area_mapped = true;
577	+	#endif
578
579		// Create areas for Kernel Data
580		kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
#	Line 470 \| Line 593 \| int main(int argc, char argv)**
593		ErrorAlert(str);
594		goto quit;
595		}
596	<	kernel_data = (KernelData *)0x68ffe000;
596	>	kernel_data = (KernelData *)KERNEL_DATA_BASE;
597		emulator_data = &kernel_data->ed;
598	<	KernelDataAddr = (uint32)kernel_data;
598	>	KernelDataAddr = KERNEL_DATA_BASE;
599		D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
600
601		// Create area for SheepShaver data
602	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
602	>	if (!SheepMem::Init()) {
603		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
604		ErrorAlert(str);
605		goto quit;
606		}
484	–	SheepStack1Base = SHEEP_BASE + 0x10000;
485	–	SheepStack2Base = SheepStack1Base + 0x10000;
486	–	SheepThunksBase = SheepStack2Base + 0x1000;
487	–	sheep_area_mapped = true;
607
608		// Create area for Mac ROM
609		if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
#	Line 492 \| Line 611 \| int main(int argc, char argv)**
611		ErrorAlert(str);
612		goto quit;
613		}
614	<	#if !EMULATED_PPC \|\| defined(__powerpc__)
614	>	#if !EMULATED_PPC
615		if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ \| VM_PAGE_WRITE \| VM_PAGE_EXECUTE) < 0) {
616		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
617		ErrorAlert(str);
#	Line 562 \| Line 681 \| int main(int argc, char argv)**
681		// Load NVRAM
682		XPRAMInit();
683
684	+	// Load XPRAM default values if signature not found
685	+	if (XPRAM[0x130c] != 0x4e \|\| XPRAM[0x130d] != 0x75
686	+	\|\| XPRAM[0x130e] != 0x4d \|\| XPRAM[0x130f] != 0x63) {
687	+	D(bug("Loading XPRAM default values\n"));
688	+	memset(XPRAM + 0x1300, 0, 0x100);
689	+	XPRAM[0x130c] = 0x4e; // "NuMc" signature
690	+	XPRAM[0x130d] = 0x75;
691	+	XPRAM[0x130e] = 0x4d;
692	+	XPRAM[0x130f] = 0x63;
693	+	XPRAM[0x1301] = 0x80; // InternalWaitFlags = DynWait (don't wait for SCSI devices upon bootup)
694	+	XPRAM[0x1310] = 0xa8; // Standard PRAM values
695	+	XPRAM[0x1311] = 0x00;
696	+	XPRAM[0x1312] = 0x00;
697	+	XPRAM[0x1313] = 0x22;
698	+	XPRAM[0x1314] = 0xcc;
699	+	XPRAM[0x1315] = 0x0a;
700	+	XPRAM[0x1316] = 0xcc;
701	+	XPRAM[0x1317] = 0x0a;
702	+	XPRAM[0x131c] = 0x00;
703	+	XPRAM[0x131d] = 0x02;
704	+	XPRAM[0x131e] = 0x63;
705	+	XPRAM[0x131f] = 0x00;
706	+	XPRAM[0x1308] = 0x13;
707	+	XPRAM[0x1309] = 0x88;
708	+	XPRAM[0x130a] = 0x00;
709	+	XPRAM[0x130b] = 0xcc;
710	+	XPRAM[0x1376] = 0x00; // OSDefault = MacOS
711	+	XPRAM[0x1377] = 0x01;
712	+	}
713	+
714		// Set boot volume
715		i16 = PrefsFindInt32("bootdrive");
716		XPRAM[0x1378] = i16 >> 8;
#	Line 579 \| Line 728 \| int main(int argc, char argv)**
728		boot_globs[1] = htonl(RAMSize);
729		boot_globs[2] = htonl((uint32)-1); // End of bank table
730
731	+	// Init thunks
732	+	if (!ThunksInit())
733	+	goto quit;
734	+
735		// Init drivers
736		SonyInit();
737		DiskInit();
#	Line 588 \| Line 741 \| int main(int argc, char argv)**
741		// Init external file system
742		ExtFSInit();
743
744	+	// Init ADB
745	+	ADBInit();
746	+
747		// Init audio
748		AudioInit();
749
#	Line 622 \| Line 778 \| int main(int argc, char argv)**
778		// Initialize Kernel Data
779		memset(kernel_data, 0, sizeof(KernelData));
780		if (ROMType == ROMTYPE_NEWWORLD) {
781	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
782	<	static uint8 vector_lookup_tbl[128];
783	<	static uint8 vector_mask_tbl[64];
781	>	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
782	>	memset((void )of_dev_tree, 0, 4 sizeof(uint32));
783	>	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
784	>	uintptr vector_mask_tbl = SheepMem::Reserve(64);
785		memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
786	<	memset(vector_lookup_tbl, 0, 128);
787	<	memset(vector_mask_tbl, 0, 64);
786	>	memset((void *)vector_lookup_tbl, 0, 128);
787	>	memset((void *)vector_mask_tbl, 0, 64);
788		kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
789	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree); // OF device tree base
790	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
791	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
789	>	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree); // OF device tree base
790	>	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
791	>	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
792		kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE); // OpenPIC base
793		kernel_data->v[0xbb0 >> 2] = htonl(0); // ADB base
794		kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
#	Line 644 \| Line 801 \| int main(int argc, char argv)**
801		kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
802		kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
803		kernel_data->v[0xf60 >> 2] = htonl(PVR);
804	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
805	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
806	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
804	>	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed); // clock-frequency
805	>	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed); // bus-frequency
806	>	kernel_data->v[0xf6c >> 2] = htonl(BusClockSpeed / 4); // timebase-frequency
807		} else {
808		kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
809		kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
#	Line 658 \| Line 815 \| int main(int argc, char argv)**
815		kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
816		kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
817		kernel_data->v[0xf80 >> 2] = htonl(PVR);
818	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
819	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
820	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
818	>	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed); // clock-frequency
819	>	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed); // bus-frequency
820	>	kernel_data->v[0xf8c >> 2] = htonl(BusClockSpeed / 4); // timebase-frequency
821		}
822
823		// Initialize extra low memory
824		D(bug("Initializing Low Memory...\n"));
825		memset(NULL, 0, 0x3000);
826		WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h')); // Signature to detect SheepShaver
827	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data); // For trap replacement routines
827	>	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr); // For trap replacement routines
828		WriteMacInt32(XLM_PVR, PVR); // Theoretical PVR
829		WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed); // For DriverServicesLib patch
830		WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN); // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
831	<	#if EMULATED_PPC
832	<	WriteMacInt32(XLM_ETHER_INIT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_INIT));
833	<	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);
831	>	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage()); // Pointer to read-only page with all bits set to 0
832	>	#if !EMULATED_PPC
833	>	WriteMacInt32(XLM_TOC, (uint32)TOC); // TOC pointer of emulator
834		#endif
835	+	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT)); // DLPI ethernet driver functions
836	+	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
837	+	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
838	+	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
839	+	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
840	+	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
841	+	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
842		D(bug("Low Memory initialized\n"));
843
844		// Start 60Hz thread
#	Line 702 \| Line 852 \| int main(int argc, char argv)**
852
853		#if !EMULATED_PPC
854		// Create and install stacks for signal handlers
855	<	sig_stack = malloc(SIG_STACK_SIZE);
856	<	D(bug("Signal stack at %p\n", sig_stack));
857	<	if (sig_stack == NULL) {
858	<	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
859	<	goto quit;
860	<	}
861	<	extra_stack = malloc(SIG_STACK_SIZE);
862	<	D(bug("Extra stack at %p\n", extra_stack));
863	<	if (extra_stack == NULL) {
864	<	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
715	<	goto quit;
855	>	for (int i = 0; i < SIG_STACK_COUNT; i++) {
856	>	void *sig_stack = malloc(SIG_STACK_SIZE);
857	>	D(bug("Signal stack %d at %p\n", i, sig_stack));
858	>	if (sig_stack == NULL) {
859	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
860	>	goto quit;
861	>	}
862	>	sig_stacks[i].ss_sp = sig_stack;
863	>	sig_stacks[i].ss_flags = 0;
864	>	sig_stacks[i].ss_size = SIG_STACK_SIZE;
865		}
866	<	struct sigaltstack new_stack;
867	<	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) {
866	>	sig_stack_id = 0;
867	>	if (sigaltstack(&sig_stacks[0], NULL) < 0) {
868		sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
869		ErrorAlert(str);
870		goto quit;
#	Line 726 \| Line 872 \| int main(int argc, char argv)**
872		#endif
873
874		#if !EMULATED_PPC
875	<	// Install SIGSEGV handler
875	>	// Install SIGSEGV and SIGBUS handlers
876		sigemptyset(&sigsegv_action.sa_mask); // Block interrupts during SEGV handling
877		sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
878	<	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
879	<	sigsegv_action.sa_flags = SA_ONSTACK;
878	>	sigsegv_action.sa_sigaction = sigsegv_handler;
879	>	sigsegv_action.sa_flags = SA_ONSTACK \| SA_SIGINFO;
880	>	#ifdef HAVE_SIGNAL_SA_RESTORER
881		sigsegv_action.sa_restorer = NULL;
882	+	#endif
883		if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
884		sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
885		ErrorAlert(str);
886		goto quit;
887		}
888	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
889	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
890	+	ErrorAlert(str);
891	+	goto quit;
892	+	}
893
894		// Install SIGILL handler
895		sigemptyset(&sigill_action.sa_mask); // Block interrupts during ILL handling
896		sigaddset(&sigill_action.sa_mask, SIGUSR2);
897	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
898	<	sigill_action.sa_flags = SA_ONSTACK;
897	>	sigill_action.sa_sigaction = sigill_handler;
898	>	sigill_action.sa_flags = SA_ONSTACK \| SA_SIGINFO;
899	>	#ifdef HAVE_SIGNAL_SA_RESTORER
900		sigill_action.sa_restorer = NULL;
901	+	#endif
902		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
903		sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
904		ErrorAlert(str);
#	Line 751 \| Line 906 \| int main(int argc, char argv)**
906		}
907		#endif
908
909	+	#if !EMULATED_PPC
910		// Install interrupt signal handler
911		sigemptyset(&sigusr2_action.sa_mask);
912	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
913	<	sigusr2_action.sa_flags = 0;
914	<	#if !EMULATED_PPC
759	<	sigusr2_action.sa_flags = SA_ONSTACK \| SA_RESTART;
760	<	#endif
912	>	sigusr2_action.sa_sigaction = sigusr2_handler;
913	>	sigusr2_action.sa_flags = SA_ONSTACK \| SA_RESTART \| SA_SIGINFO;
914	>	#ifdef HAVE_SIGNAL_SA_RESTORER
915		sigusr2_action.sa_restorer = NULL;
916	+	#endif
917		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
918		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
919		ErrorAlert(str);
920		goto quit;
921		}
922	+	#endif
923
924		// Get my thread ID and execute MacOS thread function
925		emul_thread = pthread_self();
#	Line 800 \| Line 956 \| static void Quit(void)
956		}
957
958		#if !EMULATED_PPC
959	<	// Uninstall SIGSEGV handler
959	>	// Uninstall SIGSEGV and SIGBUS handlers
960		sigemptyset(&sigsegv_action.sa_mask);
961		sigsegv_action.sa_handler = SIG_DFL;
962		sigsegv_action.sa_flags = 0;
963		sigaction(SIGSEGV, &sigsegv_action, NULL);
964	+	sigaction(SIGBUS, &sigsegv_action, NULL);
965
966		// Uninstall SIGILL handler
967		sigemptyset(&sigill_action.sa_mask);
968		sigill_action.sa_handler = SIG_DFL;
969		sigill_action.sa_flags = 0;
970		sigaction(SIGILL, &sigill_action, NULL);
971	+
972	+	// Delete stacks for signal handlers
973	+	for (int i = 0; i < SIG_STACK_COUNT; i++) {
974	+	void *sig_stack = sig_stacks[i].ss_sp;
975	+	if (sig_stack)
976	+	free(sig_stack);
977	+	}
978		#endif
979
980		// Save NVRAM
#	Line 831 \| Line 995 \| static void Quit(void)
995		// Exit audio
996		AudioExit();
997
998	+	// Exit ADB
999	+	ADBExit();
1000	+
1001		// Exit video
1002		VideoExit();
1003
#	Line 843 \| Line 1010 \| static void Quit(void)
1010		DiskExit();
1011		SonyExit();
1012
1013	+	// Delete thunks
1014	+	ThunksExit();
1015	+
1016	+	// Delete SheepShaver globals
1017	+	SheepMem::Exit();
1018	+
1019		// Delete RAM area
1020		if (ram_area_mapped)
1021		vm_release((char *)RAM_BASE, RAMSize);
#	Line 954 \| Line 1127 \| void Execute68kTrap(uint16 trap, M68kReg
1127		uint16 proc[2] = {trap, M68K_RTS};
1128		Execute68k((uint32)proc, r);
1129		}
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	–	}
1130		#endif
1131
1132
#	Line 1045 \| Line 1205 \| *void MakeExecutable(int dummy, void sta**
1205
1206		void PatchAfterStartup(void)
1207		{
1048	–	#if EMULATED_PPC
1208		ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1050	–	#else
1051	–	ExecutePPC(VideoInstallAccel);
1052	–	#endif
1209		InstallExtFS();
1210		}
1211
#	Line 1094 \| Line 1250 \| *static void tick_func(void arg)*
1250		if (emul_thread_fatal) {
1251
1252		// Yes, dump registers
1253	<	pt_regs r = (pt_regs )&sigsegv_regs;
1253	>	sigregs *r = &sigsegv_regs;
1254		char str[256];
1255	<	sprintf(str, "SIGSEGV\n"
1255	>	if (crash_reason == NULL)
1256	>	crash_reason = "SIGSEGV";
1257	>	sprintf(str, "%s\n"
1258		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
1259		" xer %08lx cr %08lx \n"
1260		" r0 %08lx r1 %08lx r2 %08lx r3 %08lx\n"
#	Line 1107 \| Line 1265 \| *static void tick_func(void arg)*
1265		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1266		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1267		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1268	+	crash_reason,
1269		r->nip, r->link, r->ctr, r->msr,
1270		r->xer, r->ccr,
1271		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1152 \| Line 1311 \| *static void tick_func(void arg)*
1311
1312		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1313		{
1314	<	// nothing to do
1314	>	#ifdef HAVE_PTHREADS
1315	>	pthread_attr_init(attr);
1316	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1317	>	// Some of these only work for superuser
1318	>	if (geteuid() == 0) {
1319	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1320	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1321	>	struct sched_param fifo_param;
1322	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1323	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1324	>	priority);
1325	>	pthread_attr_setschedparam(attr, &fifo_param);
1326	>	}
1327	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1328	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1329	>	// If system scope is not available (eg. we're not running
1330	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1331	>	// scope. It exposes pthread scheduling to the kernel,
1332	>	// without setting realtime priority.
1333	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1334	>	#endif
1335	>	}
1336	>	#endif
1337	>	#endif
1338		}
1339
1340
#	Line 1298 \| Line 1480 \| static void sigusr2_handler(int sig)
1480		#endif
1481		}
1482		#else
1483	<	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1483	>	static void sigusr2_handler(int sig, siginfo_t sip, void scp)
1484		{
1485	<	pt_regs *r = sc->regs;
1485	>	machine_regs *r = MACHINE_REGISTERS(scp);
1486
1487		// Do nothing if interrupts are disabled
1488		if ((int32 )XLM_IRQ_NEST > 0)
#	Line 1314 \| Line 1496 \| static void sigusr2_handler(int sig, sig
1496		case MODE_68K:
1497		// 68k emulator active, trigger 68k interrupt level 1
1498		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1499	<	r->ccr \|= ntohl(kernel_data->v[0x674 >> 2]);
1499	>	r->cr() \|= ntohl(kernel_data->v[0x674 >> 2]);
1500		break;
1501
1502		#if INTERRUPTS_IN_NATIVE_MODE
1503		case MODE_NATIVE:
1504		// 68k emulator inactive, in nanokernel?
1505	<	if (r->gpr[1] != KernelDataAddr) {
1505	>	if (r->gpr(1) != KernelDataAddr) {
1506	>
1507	>	// Set extra stack for nested interrupts
1508	>	sig_stack_acquire();
1509	>
1510		// Prepare for 68k interrupt level 1
1511		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1512		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) \| ntohl(kernel_data->v[0x674 >> 2]));
1513
1514		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1515	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1515	>	DisableInterrupt();
1516		if (ROMType == ROMTYPE_NEWWORLD)
1517		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1518		else
1519		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1520	+
1521	+	// Reset normal signal stack
1522	+	sig_stack_release();
1523		}
1524		break;
1525		#endif
#	Line 1341 \| Line 1530 \| static void sigusr2_handler(int sig, sig
1530		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1531
1532		// Set extra stack for SIGSEGV handler
1533	<	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);
1533	>	sig_stack_acquire();
1534		#if 1
1535		// Execute full 68k interrupt routine
1536		M68kRegisters r;
#	Line 1367 \| Line 1552 \| static void sigusr2_handler(int sig, sig
1552		if (InterruptFlags & INTFLAG_VIA) {
1553		ClearInterruptFlag(INTFLAG_VIA);
1554		ADBInterrupt();
1555	<	ExecutePPC(VideoVBL);
1555	>	ExecuteNative(NATIVE_VIDEO_VBL);
1556		}
1557		}
1558		#endif
1559		// Reset normal signal stack
1560	<	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);
1560	>	sig_stack_release();
1561		}
1562		break;
1563		#endif
#	Line 1389 \| Line 1571 \| static void sigusr2_handler(int sig, sig
1571		*/
1572
1573		#if !EMULATED_PPC
1574	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1574	>	static void sigsegv_handler(int sig, siginfo_t sip, void scp)
1575		{
1576	<	pt_regs *r = sc->regs;
1576	>	machine_regs *r = MACHINE_REGISTERS(scp);
1577
1578		// Get effective address
1579	<	uint32 addr = r->dar;
1579	>	uint32 addr = r->dar();
1580
1581		#if ENABLE_VOSF
1582		// Handle screen fault.
1583		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1584	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1584	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1585		return;
1586		#endif
1587
1588		num_segv++;
1589
1590		// Fault in Mac ROM or RAM?
1591	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1591	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1592		if (mac_fault) {
1593
1594		// "VM settings" during MacOS 8 installation
1595	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1596	<	r->nip += 4;
1597	<	r->gpr[8] = 0;
1595	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1596	>	r->pc() += 4;
1597	>	r->gpr(8) = 0;
1598		return;
1599
1600		// MacOS 8.5 installation
1601	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1602	<	r->nip += 4;
1603	<	r->gpr[8] = 0;
1601	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1602	>	r->pc() += 4;
1603	>	r->gpr(8) = 0;
1604		return;
1605
1606		// MacOS 8 serial drivers on startup
1607	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 \|\| r->gpr[8] == 0xf3012000)) {
1608	<	r->nip += 4;
1609	<	r->gpr[8] = 0;
1607	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 \|\| r->gpr(8) == 0xf3012000)) {
1608	>	r->pc() += 4;
1609	>	r->gpr(8) = 0;
1610		return;
1611
1612		// MacOS 8.1 serial drivers on startup
1613	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 \|\| r->gpr[20] == 0xf3012000)) {
1614	<	r->nip += 4;
1613	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 \|\| r->gpr(20) == 0xf3012000)) {
1614	>	r->pc() += 4;
1615		return;
1616	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 \|\| r->gpr[20] == 0xf3012000)) {
1617	<	r->nip += 4;
1616	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 \|\| r->gpr(20) == 0xf3012000)) {
1617	>	r->pc() += 4;
1618		return;
1619		}
1620
1621		// Get opcode and divide into fields
1622	<	uint32 opcode = ((uint32 )r->nip);
1622	>	uint32 opcode = ((uint32 )r->pc());
1623		uint32 primop = opcode >> 26;
1624		uint32 exop = (opcode >> 1) & 0x3ff;
1625		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1526 \| Line 1708 \| static void sigsegv_handler(int sig, sig
1708		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1709		case 45: // sthu
1710		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1711	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1712	+	case 46: // lmw
1713	+	if ((addr % 4) != 0) {
1714	+	uint32 ea = addr;
1715	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1716	+	for (int i = rd; i <= 31; i++) {
1717	+	r->gpr(i) = ReadMacInt32(ea);
1718	+	ea += 4;
1719	+	}
1720	+	r->pc() += 4;
1721	+	goto rti;
1722	+	}
1723	+	break;
1724	+	case 47: // stmw
1725	+	if ((addr % 4) != 0) {
1726	+	uint32 ea = addr;
1727	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1728	+	for (int i = rd; i <= 31; i++) {
1729	+	WriteMacInt32(ea, r->gpr(i));
1730	+	ea += 4;
1731	+	}
1732	+	r->pc() += 4;
1733	+	goto rti;
1734	+	}
1735	+	break;
1736	+	#endif
1737		}
1738
1739	<	// Ignore ROM writes
1740	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1741	<	// 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));
1739	>	// Ignore ROM writes (including to the zero page, which is read-only)
1740	>	if (transfer_type == TYPE_STORE &&
1741	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) \|\|
1742	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1743	>	// 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()));
1744		if (addr_mode == MODE_U \|\| addr_mode == MODE_UX)
1745	<	r->gpr[ra] = addr;
1746	<	r->nip += 4;
1745	>	r->gpr(ra) = addr;
1746	>	r->pc() += 4;
1747		goto rti;
1748		}
1749
1750		// Ignore illegal memory accesses?
1751		if (PrefsFindBool("ignoresegv")) {
1752		if (addr_mode == MODE_U \|\| addr_mode == MODE_UX)
1753	<	r->gpr[ra] = addr;
1753	>	r->gpr(ra) = addr;
1754		if (transfer_type == TYPE_LOAD)
1755	<	r->gpr[rd] = 0;
1756	<	r->nip += 4;
1755	>	r->gpr(rd) = 0;
1756	>	r->pc() += 4;
1757		goto rti;
1758		}
1759
#	Line 1551 \| Line 1761 \| static void sigsegv_handler(int sig, sig
1761		if (!PrefsFindBool("nogui")) {
1762		char str[256];
1763		if (transfer_type == TYPE_LOAD \|\| transfer_type == TYPE_STORE)
1764	<	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]);
1764	>	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));
1765		else
1766	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1766	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1767		ErrorAlert(str);
1768		QuitEmulator();
1769		return;
#	Line 1561 \| Line 1771 \| static void sigsegv_handler(int sig, sig
1771		}
1772
1773		// For all other errors, jump into debugger (sort of...)
1774	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1775		if (!ready_for_signals) {
1776	<	printf("SIGSEGV\n");
1777	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1776	>	printf("%s\n");
1777	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1778		printf(
1779		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
1780		" xer %08lx cr %08lx \n"
#	Line 1575 \| Line 1786 \| static void sigsegv_handler(int sig, sig
1786		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1787		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1788		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1789	<	r->nip, r->link, r->ctr, r->msr,
1790	<	r->xer, r->ccr,
1791	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1792	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1793	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1794	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1795	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1796	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1797	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1798	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1789	>	crash_reason,
1790	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1791	>	r->xer(), r->cr(),
1792	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1793	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1794	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1795	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1796	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1797	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1798	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1799	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1800		exit(1);
1801		QuitEmulator();
1802		return;
1803		} else {
1804		// We crashed. Save registers, tell tick thread and loop forever
1805	<	sigsegv_regs = (sigregs )r;
1805	>	build_sigregs(&sigsegv_regs, r);
1806		emul_thread_fatal = true;
1807		for (;;) ;
1808		}
#	Line 1602 \| Line 1814 \| rti:;
1814		* SIGILL handler
1815		*/
1816
1817	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1817	>	static void sigill_handler(int sig, siginfo_t sip, void scp)
1818		{
1819	<	pt_regs *r = sc->regs;
1819	>	machine_regs *r = MACHINE_REGISTERS(scp);
1820		char str[256];
1821
1822		// Fault in Mac ROM or RAM?
1823	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1823	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1824		if (mac_fault) {
1825
1826		// Get opcode and divide into fields
1827	<	uint32 opcode = ((uint32 )r->nip);
1827	>	uint32 opcode = ((uint32 )r->pc());
1828		uint32 primop = opcode >> 26;
1829		uint32 exop = (opcode >> 1) & 0x3ff;
1830		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1623 \| Line 1835 \| static void sigill_handler(int sig, sigc
1835		switch (primop) {
1836		case 9: // POWER instructions
1837		case 22:
1838	<	power_inst: sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
1838	>	power_inst: sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
1839		ErrorAlert(str);
1840		QuitEmulator();
1841		return;
#	Line 1631 \| Line 1843 \| power_inst: sprintf(str, GetString(STR_
1843		case 31:
1844		switch (exop) {
1845		case 83: // mfmsr
1846	<	r->gpr[rd] = 0xf072;
1847	<	r->nip += 4;
1846	>	r->gpr(rd) = 0xf072;
1847	>	r->pc() += 4;
1848		goto rti;
1849
1850		case 210: // mtsr
1851		case 242: // mtsrin
1852		case 306: // tlbie
1853	<	r->nip += 4;
1853	>	r->pc() += 4;
1854		goto rti;
1855
1856		case 339: { // mfspr
#	Line 1654 \| Line 1866 \| power_inst: sprintf(str, GetString(STR_
1866		case 957: // PMC3
1867		case 958: // PMC4
1868		case 959: // SDA
1869	<	r->nip += 4;
1869	>	r->pc() += 4;
1870		goto rti;
1871		case 25: // SDR1
1872	<	r->gpr[rd] = 0xdead001f;
1873	<	r->nip += 4;
1872	>	r->gpr(rd) = 0xdead001f;
1873	>	r->pc() += 4;
1874		goto rti;
1875		case 287: // PVR
1876	<	r->gpr[rd] = PVR;
1877	<	r->nip += 4;
1876	>	r->gpr(rd) = PVR;
1877	>	r->pc() += 4;
1878		goto rti;
1879		}
1880		break;
#	Line 1698 \| Line 1910 \| power_inst: sprintf(str, GetString(STR_
1910		case 957: // PMC3
1911		case 958: // PMC4
1912		case 959: // SDA
1913	<	r->nip += 4;
1913	>	r->pc() += 4;
1914		goto rti;
1915		}
1916		break;
#	Line 1717 \| Line 1929 \| power_inst: sprintf(str, GetString(STR_
1929
1930		// In GUI mode, show error alert
1931		if (!PrefsFindBool("nogui")) {
1932	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1932	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1933		ErrorAlert(str);
1934		QuitEmulator();
1935		return;
#	Line 1725 \| Line 1937 \| power_inst: sprintf(str, GetString(STR_
1937		}
1938
1939		// For all other errors, jump into debugger (sort of...)
1940	+	crash_reason = "SIGILL";
1941		if (!ready_for_signals) {
1942	<	printf("SIGILL\n");
1943	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1942	>	printf("%s\n");
1943	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1944		printf(
1945		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
1946		" xer %08lx cr %08lx \n"
#	Line 1739 \| Line 1952 \| power_inst: sprintf(str, GetString(STR_
1952		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1953		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1954		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1955	<	r->nip, r->link, r->ctr, r->msr,
1956	<	r->xer, r->ccr,
1957	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1958	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1959	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1960	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1961	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1962	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1963	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1964	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1955	>	crash_reason,
1956	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1957	>	r->xer(), r->cr(),
1958	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1959	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1960	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1961	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1962	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1963	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1964	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1965	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1966		exit(1);
1967		QuitEmulator();
1968		return;
1969		} else {
1970		// We crashed. Save registers, tell tick thread and loop forever
1971	<	sigsegv_regs = (sigregs )r;
1971	>	build_sigregs(&sigsegv_regs, r);
1972		emul_thread_fatal = true;
1973		for (;;) ;
1974		}
#	Line 1764 \| Line 1978 \| rti:;
1978
1979
1980		/*
1981	+	* Helpers to share 32-bit addressable data with MacOS
1982	+	*/
1983	+
1984	+	bool SheepMem::Init(void)
1985	+	{
1986	+	// Size of a native page
1987	+	page_size = getpagesize();
1988	+
1989	+	// Allocate SheepShaver globals
1990	+	if (vm_acquire_fixed((char *)base, size) < 0)
1991	+	return false;
1992	+
1993	+	// Allocate page with all bits set to 0
1994	+	zero_page = base + size;
1995	+	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
1996	+	return false;
1997	+	memset((char *)zero_page, 0, page_size);
1998	+	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
1999	+	return false;
2000	+
2001	+	#if EMULATED_PPC
2002	+	// Allocate alternate stack for PowerPC interrupt routine
2003	+	sig_stack = zero_page + page_size;
2004	+	if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0)
2005	+	return false;
2006	+	#endif
2007	+
2008	+	top = base + size;
2009	+	return true;
2010	+	}
2011	+
2012	+	void SheepMem::Exit(void)
2013	+	{
2014	+	if (top) {
2015	+	// Delete SheepShaver globals
2016	+	vm_release((void *)base, size);
2017	+
2018	+	// Delete zero page
2019	+	vm_release((void *)zero_page, page_size);
2020	+
2021	+	#if EMULATED_PPC
2022	+	// Delete alternate stack for PowerPC interrupt routine
2023	+	vm_release((void *)sig_stack, SIG_STACK_SIZE);
2024	+	#endif
2025	+	}
2026	+	}
2027	+
2028	+
2029	+	/*
2030		* Display alert
2031		*/
2032

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Comparing SheepShaver/src/Unix/main_unix.cpp (file contents): Revision 1.13 by gbeauche, 2003-11-03T21:28:25Z vs. Revision 1.34 by gbeauche, 2004-05-15T11:07:11Z

Diff Legend

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.13 by gbeauche, 2003-11-03T21:28:25Z vs.
Revision 1.34 by gbeauche, 2004-05-15T11:07:11Z