[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 1.24 by gbeauche, 2004-01-07T18:24:45Z

#	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
#	Line 172 \| Line 176 \| *void TOC; // Small data pointer (r13**
176		#endif
177		uint32 RAMBase; // Base address of Mac RAM
178		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
179		uint32 KernelDataAddr; // Address of Kernel Data
180		uint32 BootGlobsAddr; // Address of BootGlobs structure at top of Mac RAM
181		uint32 PVR; // Theoretical PVR
#	Line 183 \| Line 184 \| int64 BusClockSpeed; // Bus clock speed
184
185
186		// Global variables
187	<	static char *x_display_name = NULL; // X11 display name
187	>	char *x_display_name = NULL; // X11 display name
188		Display *x_display = NULL; // X11 display handle
189	+	#ifdef X11_LOCK_TYPE
190	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
191	+	#endif
192
193		static int zero_fd = 0; // FD of /dev/zero
190	–	static bool sheep_area_mapped = false; // Flag: SheepShaver data area mmap()ed
194		static bool lm_area_mapped = false; // Flag: Low Memory area mmap()ped
195		static int kernel_area = -1; // SHM ID of Kernel Data area
196		static bool rom_area_mapped = false; // Flag: Mac ROM mmap()ped
#	Line 207 \| Line 210 \| static bool ready_for_signals = false;
210		static int64 num_segv = 0; // Number of handled SEGV signals
211
212		static struct sigaction sigusr2_action; // Interrupt signal (of emulator thread)
213	<	#if !EMULATED_PPC
213	>	#if EMULATED_PPC
214	>	static uintptr sig_stack = 0; // Stack for PowerPC interrupt routine
215	>	#else
216		static struct sigaction sigsegv_action; // Data access exception signal (of emulator thread)
217		static struct sigaction sigill_action; // Illegal instruction signal (of emulator thread)
218		static void *sig_stack = NULL; // Stack for signal handlers
219		static void *extra_stack = NULL; // Stack for SIGSEGV inside interrupt handler
220		static bool emul_thread_fatal = false; // Flag: MacOS thread crashed, tick thread shall dump debug output
221		static sigregs sigsegv_regs; // Register dump when crashed
222	+	static const char *crash_reason = NULL; // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
223		#endif
224
225	+	uintptr SheepMem::zero_page = 0; // Address of ro page filled in with zeros
226	+	uintptr SheepMem::base = 0x60000000; // Address of SheepShaver data
227	+	uintptr SheepMem::top = 0; // Top of SheepShaver data (stack like storage)
228	+
229
230		// Prototypes
231		static void Quit(void);
#	Line 224 \| Line 234 \| *static void nvram_func(void arg);*
234		static void tick_func(void arg);
235		#if EMULATED_PPC
236		static void sigusr2_handler(int sig);
237	+	extern void emul_ppc(uint32 start);
238	+	extern void init_emul_ppc(void);
239	+	extern void exit_emul_ppc(void);
240		#else
241		static void sigusr2_handler(int sig, sigcontext_struct *sc);
242		static void sigsegv_handler(int sig, sigcontext_struct *sc);
#	Line 232 \| Line 245 \| static void sigill_handler(int sig, sigc
245
246
247		// From asm_linux.S
248	<	#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
248	>	#if !EMULATED_PPC
249		extern "C" void *get_toc(void);
250		extern "C" void *get_sp(void);
251		extern "C" void flush_icache_range(void start, void end);
#	Line 251 \| Line 260 \| extern void paranoia_check(void);
260		#endif
261
262
263	+	#if EMULATED_PPC
264	+	/*
265	+	* Return signal stack base
266	+	*/
267	+
268	+	uintptr SignalStackBase(void)
269	+	{
270	+	return sig_stack + SIG_STACK_SIZE;
271	+	}
272	+
273	+
274	+	/*
275	+	* Atomic operations
276	+	*/
277	+
278	+	#if HAVE_SPINLOCKS
279	+	static spinlock_t atomic_ops_lock = SPIN_LOCK_UNLOCKED;
280	+	#else
281	+	#define spin_lock(LOCK)
282	+	#define spin_unlock(LOCK)
283	+	#endif
284	+
285	+	int atomic_add(int *var, int v)
286	+	{
287	+	spin_lock(&atomic_ops_lock);
288	+	int ret = *var;
289	+	*var += v;
290	+	spin_unlock(&atomic_ops_lock);
291	+	return ret;
292	+	}
293	+
294	+	int atomic_and(int *var, int v)
295	+	{
296	+	spin_lock(&atomic_ops_lock);
297	+	int ret = *var;
298	+	*var &= v;
299	+	spin_unlock(&atomic_ops_lock);
300	+	return ret;
301	+	}
302	+
303	+	int atomic_or(int *var, int v)
304	+	{
305	+	spin_lock(&atomic_ops_lock);
306	+	int ret = *var;
307	+	*var \|= v;
308	+	spin_unlock(&atomic_ops_lock);
309	+	return ret;
310	+	}
311	+	#endif
312	+
313	+
314		/*
315		* Main program
316		*/
#	Line 269 \| Line 329 \| int main(int argc, char argv)**
329		char str[256];
330		uint32 *boot_globs;
331		int16 i16;
272	–	int drive, driver;
332		int rom_fd;
333		FILE *proc_file;
334		const char *rom_path;
#	Line 431 \| Line 490 \| int main(int argc, char argv)**
490		ErrorAlert(str);
491		goto quit;
492		}
493	<	kernel_data = (KernelData *)0x68ffe000;
493	>	kernel_data = (KernelData *)KERNEL_DATA_BASE;
494		emulator_data = &kernel_data->ed;
495	<	KernelDataAddr = (uint32)kernel_data;
495	>	KernelDataAddr = KERNEL_DATA_BASE;
496		D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
497
498		// Create area for SheepShaver data
499	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
499	>	if (!SheepMem::Init()) {
500		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
501		ErrorAlert(str);
502		goto quit;
503		}
445	–	SheepStack1Base = SHEEP_BASE + 0x10000;
446	–	SheepStack2Base = SheepStack1Base + 0x10000;
447	–	SheepThunksBase = SheepStack2Base + 0x1000;
448	–	sheep_area_mapped = true;
504
505		// Create area for Mac ROM
506		if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
#	Line 524 \| Line 579 \| int main(int argc, char argv)**
579		XPRAMInit();
580
581		// Set boot volume
582	<	drive = PrefsFindInt32("bootdrive");
582	>	i16 = PrefsFindInt32("bootdrive");
583		XPRAM[0x1378] = i16 >> 8;
584		XPRAM[0x1379] = i16 & 0xff;
585	<	driver = PrefsFindInt32("bootdriver");
585	>	i16 = PrefsFindInt32("bootdriver");
586		XPRAM[0x137a] = i16 >> 8;
587		XPRAM[0x137b] = i16 & 0xff;
588
#	Line 540 \| Line 595 \| int main(int argc, char argv)**
595		boot_globs[1] = htonl(RAMSize);
596		boot_globs[2] = htonl((uint32)-1); // End of bank table
597
598	+	// Init thunks
599	+	if (!ThunksInit())
600	+	goto quit;
601	+
602		// Init drivers
603		SonyInit();
604		DiskInit();
#	Line 549 \| Line 608 \| int main(int argc, char argv)**
608		// Init external file system
609		ExtFSInit();
610
611	+	// Init ADB
612	+	ADBInit();
613	+
614		// Init audio
615		AudioInit();
616
#	Line 583 \| Line 645 \| int main(int argc, char argv)**
645		// Initialize Kernel Data
646		memset(kernel_data, 0, sizeof(KernelData));
647		if (ROMType == ROMTYPE_NEWWORLD) {
648	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
649	<	static uint8 vector_lookup_tbl[128];
650	<	static uint8 vector_mask_tbl[64];
648	>	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
649	>	memset((void )of_dev_tree, 0, 4 sizeof(uint32));
650	>	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
651	>	uintptr vector_mask_tbl = SheepMem::Reserve(64);
652		memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
653	<	memset(vector_lookup_tbl, 0, 128);
654	<	memset(vector_mask_tbl, 0, 64);
653	>	memset((void *)vector_lookup_tbl, 0, 128);
654	>	memset((void *)vector_mask_tbl, 0, 64);
655		kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
656	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree); // OF device tree base
657	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
658	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
656	>	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree); // OF device tree base
657	>	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
658	>	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
659		kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE); // OpenPIC base
660		kernel_data->v[0xbb0 >> 2] = htonl(0); // ADB base
661		kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
#	Line 628 \| Line 691 \| int main(int argc, char argv)**
691		D(bug("Initializing Low Memory...\n"));
692		memset(NULL, 0, 0x3000);
693		WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h')); // Signature to detect SheepShaver
694	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data); // For trap replacement routines
694	>	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr); // For trap replacement routines
695		WriteMacInt32(XLM_PVR, PVR); // Theoretical PVR
696		WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed); // For DriverServicesLib patch
697		WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN); // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
698	<	#if EMULATED_PPC
699	<	WriteMacInt32(XLM_ETHER_INIT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_INIT));
700	<	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);
698	>	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage()); // Pointer to read-only page with all bits set to 0
699	>	#if !EMULATED_PPC
700	>	WriteMacInt32(XLM_TOC, (uint32)TOC); // TOC pointer of emulator
701		#endif
702	+	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT)); // DLPI ethernet driver functions
703	+	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
704	+	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
705	+	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
706	+	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
707	+	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
708	+	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
709		D(bug("Low Memory initialized\n"));
710
711		// Start 60Hz thread
#	Line 687 \| Line 743 \| int main(int argc, char argv)**
743		#endif
744
745		#if !EMULATED_PPC
746	<	// Install SIGSEGV handler
746	>	// Install SIGSEGV and SIGBUS handlers
747		sigemptyset(&sigsegv_action.sa_mask); // Block interrupts during SEGV handling
748		sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
749		sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
#	Line 698 \| Line 754 \| int main(int argc, char argv)**
754		ErrorAlert(str);
755		goto quit;
756		}
757	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
758	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
759	+	ErrorAlert(str);
760	+	goto quit;
761	+	}
762
763		// Install SIGILL handler
764		sigemptyset(&sigill_action.sa_mask); // Block interrupts during ILL handling
#	Line 743 \| Line 804 \| quit:
804
805		static void Quit(void)
806		{
807	+	#if EMULATED_PPC
808	+	// Exit PowerPC emulation
809	+	exit_emul_ppc();
810	+	#endif
811	+
812		// Stop 60Hz thread
813		if (tick_thread_active) {
814		pthread_cancel(tick_thread);
#	Line 756 \| Line 822 \| static void Quit(void)
822		}
823
824		#if !EMULATED_PPC
825	<	// Uninstall SIGSEGV handler
825	>	// Uninstall SIGSEGV and SIGBUS handlers
826		sigemptyset(&sigsegv_action.sa_mask);
827		sigsegv_action.sa_handler = SIG_DFL;
828		sigsegv_action.sa_flags = 0;
829		sigaction(SIGSEGV, &sigsegv_action, NULL);
830	+	sigaction(SIGBUS, &sigsegv_action, NULL);
831
832		// Uninstall SIGILL handler
833		sigemptyset(&sigill_action.sa_mask);
#	Line 787 \| Line 854 \| static void Quit(void)
854		// Exit audio
855		AudioExit();
856
857	+	// Exit ADB
858	+	ADBExit();
859	+
860		// Exit video
861		VideoExit();
862
#	Line 799 \| Line 869 \| static void Quit(void)
869		DiskExit();
870		SonyExit();
871
872	+	// Delete thunks
873	+	ThunksExit();
874	+
875	+	// Delete SheepShaver globals
876	+	SheepMem::Exit();
877	+
878		// Delete RAM area
879		if (ram_area_mapped)
880		vm_release((char *)RAM_BASE, RAMSize);
#	Line 846 \| Line 922 \| static void Quit(void)
922		*/
923
924		#if EMULATED_PPC
849	–	extern void emul_ppc(uint32 start);
850	–	extern void init_emul_ppc(void);
925		void jump_to_rom(uint32 entry)
926		{
927		init_emul_ppc();
#	Line 912 \| Line 986 \| void Execute68kTrap(uint16 trap, M68kReg
986		uint16 proc[2] = {trap, M68K_RTS};
987		Execute68k((uint32)proc, r);
988		}
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	–	}
989		#endif
990
991
#	Line 987 \| Line 1048 \| *void Dump68kRegs(M68kRegisters r)**
1048
1049		void MakeExecutable(int dummy, void *start, uint32 length)
1050		{
1051	<	#if !EMULATED_PPC
991	<	if (((uint32)start >= ROM_BASE) && ((uint32)start < (ROM_BASE + ROM_SIZE)))
1051	>	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1052		return;
1053	<	flush_icache_range(start, (void *)((uint32)start + length));
1053	>	#if EMULATED_PPC
1054	>	FlushCodeCache((uintptr)start, (uintptr)start + length);
1055	>	#else
1056	>	flush_icache_range(start, (void *)((uintptr)start + length));
1057		#endif
1058		}
1059
#	Line 1001 \| Line 1064 \| *void MakeExecutable(int dummy, void sta**
1064
1065		void PatchAfterStartup(void)
1066		{
1004	–	#if EMULATED_PPC
1067		ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1006	–	#else
1007	–	ExecutePPC(VideoInstallAccel);
1008	–	#endif
1068		InstallExtFS();
1069		}
1070
#	Line 1052 \| Line 1111 \| *static void tick_func(void arg)*
1111		// Yes, dump registers
1112		pt_regs r = (pt_regs )&sigsegv_regs;
1113		char str[256];
1114	<	sprintf(str, "SIGSEGV\n"
1114	>	if (crash_reason == NULL)
1115	>	crash_reason = "SIGSEGV";
1116	>	sprintf(str, "%s\n"
1117		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
1118		" xer %08lx cr %08lx \n"
1119		" r0 %08lx r1 %08lx r2 %08lx r3 %08lx\n"
#	Line 1063 \| Line 1124 \| *static void tick_func(void arg)*
1124		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1125		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1126		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1127	+	crash_reason,
1128		r->nip, r->link, r->ctr, r->msr,
1129		r->xer, r->ccr,
1130		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1108 \| Line 1170 \| *static void tick_func(void arg)*
1170
1171		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1172		{
1173	<	// nothing to do
1173	>	#ifdef HAVE_PTHREADS
1174	>	pthread_attr_init(attr);
1175	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1176	>	// Some of these only work for superuser
1177	>	if (geteuid() == 0) {
1178	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1179	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1180	>	struct sched_param fifo_param;
1181	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1182	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1183	>	priority);
1184	>	pthread_attr_setschedparam(attr, &fifo_param);
1185	>	}
1186	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1187	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1188	>	// If system scope is not available (eg. we're not running
1189	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1190	>	// scope. It exposes pthread scheduling to the kernel,
1191	>	// without setting realtime priority.
1192	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1193	>	#endif
1194	>	}
1195	>	#endif
1196	>	#endif
1197		}
1198
1199
#	Line 1323 \| Line 1408 \| static void sigusr2_handler(int sig, sig
1408		if (InterruptFlags & INTFLAG_VIA) {
1409		ClearInterruptFlag(INTFLAG_VIA);
1410		ADBInterrupt();
1411	<	ExecutePPC(VideoVBL);
1411	>	ExecuteNative(NATIVE_VIDEO_VBL);
1412		}
1413		}
1414		#endif
#	Line 1482 \| Line 1567 \| static void sigsegv_handler(int sig, sig
1567		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1568		case 45: // sthu
1569		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1570	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1571	+	case 46: // lmw
1572	+	if (sig == SIGBUS) {
1573	+	uint32 ea = (ra == 0 ? 0 : r->gpr[ra]) + imm;
1574	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->nip));
1575	+	for (int i = rd; i <= 31; i++) {
1576	+	r->gpr[i] = ReadMacInt32(ea);
1577	+	ea += 4;
1578	+	}
1579	+	r->nip += 4;
1580	+	goto rti;
1581	+	}
1582	+	break;
1583	+	case 47: // stmw
1584	+	if (sig == SIGBUS) {
1585	+	uint32 ea = (ra == 0 ? 0 : r->gpr[ra]) + imm;
1586	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->nip));
1587	+	for (int i = rd; i <= 31; i++) {
1588	+	WriteMacInt32(ea, r->gpr[i]);
1589	+	ea += 4;
1590	+	}
1591	+	r->nip += 4;
1592	+	goto rti;
1593	+	}
1594	+	break;
1595	+	#endif
1596		}
1597
1598		// Ignore ROM writes
#	Line 1517 \| Line 1628 \| static void sigsegv_handler(int sig, sig
1628		}
1629
1630		// For all other errors, jump into debugger (sort of...)
1631	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1632		if (!ready_for_signals) {
1633	<	printf("SIGSEGV\n");
1633	>	printf("%s\n");
1634		printf(" sigcontext %p, pt_regs %p\n", sc, r);
1635		printf(
1636		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
#	Line 1531 \| Line 1643 \| static void sigsegv_handler(int sig, sig
1643		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1644		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1645		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1646	+	crash_reason,
1647		r->nip, r->link, r->ctr, r->msr,
1648		r->xer, r->ccr,
1649		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1681 \| Line 1794 \| power_inst: sprintf(str, GetString(STR_
1794		}
1795
1796		// For all other errors, jump into debugger (sort of...)
1797	+	crash_reason = "SIGILL";
1798		if (!ready_for_signals) {
1799	<	printf("SIGILL\n");
1799	>	printf("%s\n");
1800		printf(" sigcontext %p, pt_regs %p\n", sc, r);
1801		printf(
1802		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
#	Line 1695 \| Line 1809 \| power_inst: sprintf(str, GetString(STR_
1809		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1810		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1811		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1812	+	crash_reason,
1813		r->nip, r->link, r->ctr, r->msr,
1814		r->xer, r->ccr,
1815		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1720 \| Line 1835 \| rti:;
1835
1836
1837		/*
1838	+	* Helpers to share 32-bit addressable data with MacOS
1839	+	*/
1840	+
1841	+	bool SheepMem::Init(void)
1842	+	{
1843	+	const int page_size = getpagesize();
1844	+
1845	+	// Allocate SheepShaver globals
1846	+	if (vm_acquire_fixed((char *)base, size) < 0)
1847	+	return false;
1848	+
1849	+	// Allocate page with all bits set to 0
1850	+	zero_page = base + size;
1851	+	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
1852	+	return false;
1853	+	memset((char *)zero_page, 0, page_size);
1854	+	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
1855	+	return false;
1856	+
1857	+	#if EMULATED_PPC
1858	+	// Allocate alternate stack for PowerPC interrupt routine
1859	+	sig_stack = zero_page + page_size;
1860	+	if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0)
1861	+	return false;
1862	+	#endif
1863	+
1864	+	top = base + size;
1865	+	return true;
1866	+	}
1867	+
1868	+	void SheepMem::Exit(void)
1869	+	{
1870	+	if (top) {
1871	+	const int page_size = getpagesize();
1872	+
1873	+	// Delete SheepShaver globals
1874	+	vm_release((void *)base, size);
1875	+
1876	+	// Delete zero page
1877	+	vm_release((void *)zero_page, page_size);
1878	+
1879	+	#if EMULATED_PPC
1880	+	// Delete alternate stack for PowerPC interrupt routine
1881	+	vm_release((void *)sig_stack, SIG_STACK_SIZE);
1882	+	#endif
1883	+	}
1884	+	}
1885	+
1886	+
1887	+	/*
1888		* Display alert
1889		*/
1890

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Comparing SheepShaver/src/Unix/main_unix.cpp (file contents): Revision 1.8 by gbeauche, 2003-09-29T15:46:07Z vs. Revision 1.24 by gbeauche, 2004-01-07T18:24:45Z

Diff Legend

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.8 by gbeauche, 2003-09-29T15:46:07Z vs.
Revision 1.24 by gbeauche, 2004-01-07T18:24:45Z