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

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.2 by cebix, 2002-02-21T15:12:12Z vs.
Revision 1.22 by gbeauche, 2004-01-04T05:45:50Z

#	Line 107 | Line 107
107		#include "macos_util.h"
108		#include "rom_patches.h"
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 143 | Line 146
146		const char ROM_FILE_NAME[] = "ROM";
147		const char ROM_FILE_NAME2[] = "Mac OS ROM";
148
149	<	const uint32 ROM_AREA_SIZE = 0x500000;          // Size of ROM area
147	<	const uint32 ROM_END = ROM_BASE + ROM_SIZE;     // End of ROM
148	<
149	<	const uint32 KERNEL_DATA_BASE = 0x68ffe000;     // Address of Kernel Data
150	<	const uint32 KERNEL_DATA2_BASE = 0x5fffe000;    // Alternate address of Kernel Data
151	<	const uint32 KERNEL_AREA_SIZE = 0x2000;         // Size of Kernel Data area
152	<
149	>	const uintptr RAM_BASE = 0x20000000;            // Base address of RAM
150		const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
151
152
156	–	// 68k Emulator Data
157	–	struct EmulatorData {
158	–	uint32  v[0x400];
159	–	};
160	–
161	–
162	–	// Kernel Data
163	–	struct KernelData {
164	–	uint32  v[0x400];
165	–	EmulatorData ed;
166	–	};
167	–
168	–
153		#if !EMULATED_PPC
154		// Structure in which registers are saved in a signal handler;
155		// sigcontext->regs points to it
#	Line 197 | Line 181 | int64 BusClockSpeed;   // Bus clock speed
181
182
183		// Global variables
184	<	static char *x_display_name = NULL;                     // X11 display name
184	>	char *x_display_name = NULL;                            // X11 display name
185		Display *x_display = NULL;                                      // X11 display handle
186	+	#ifdef X11_LOCK_TYPE
187	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
188	+	#endif
189
190		static int zero_fd = 0;                                         // FD of /dev/zero
191		static bool lm_area_mapped = false;                     // Flag: Low Memory area mmap()ped
192		static int kernel_area = -1;                            // SHM ID of Kernel Data area
193		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
194		static bool ram_area_mapped = false;            // Flag: Mac RAM mmap()ped
208	–	static void *mmap_RAMBase = NULL;                       // Base address of mmap()ed RAM area
195		static KernelData *kernel_data;                         // Pointer to Kernel Data
196		static EmulatorData *emulator_data;
197
#	Line 220 | Line 206 | static pthread_t emul_thread;                          // MacO
206		static bool ready_for_signals = false;          // Handler installed, signals can be sent
207		static int64 num_segv = 0;                                      // Number of handled SEGV signals
208
223	–	#if !EMULATED_PPC
209		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
210	+	#if EMULATED_PPC
211	+	static uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
212	+	#else
213		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
214		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
215		static void *sig_stack = NULL;                          // Stack for signal handlers
#	Line 230 | Line 218 | static bool emul_thread_fatal = false;
218		static sigregs sigsegv_regs;                            // Register dump when crashed
219		#endif
220
221	+	uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
222	+	uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
223	+	uintptr SheepMem::top = 0;                                      // Top of SheepShaver data (stack like storage)
224	+
225
226		// Prototypes
227		static void Quit(void);
228		static void *emul_func(void *arg);
229		static void *nvram_func(void *arg);
230		static void *tick_func(void *arg);
231	<	#if !EMULATED_PPC
231	>	#if EMULATED_PPC
232	>	static void sigusr2_handler(int sig);
233	>	extern void emul_ppc(uint32 start);
234	>	extern void init_emul_ppc(void);
235	>	extern void exit_emul_ppc(void);
236	>	#else
237		static void sigusr2_handler(int sig, sigcontext_struct *sc);
238		static void sigsegv_handler(int sig, sigcontext_struct *sc);
239		static void sigill_handler(int sig, sigcontext_struct *sc);
#	Line 244 | Line 241 | static void sigill_handler(int sig, sigc
241
242
243		// From asm_linux.S
244	<	#if EMULATED_PPC
248	<	extern int atomic_add(int *var, int v);
249	<	extern int atomic_and(int *var, int v);
250	<	extern int atomic_or(int *var, int v);
251	<	#else
244	>	#if !EMULATED_PPC
245		extern "C" void *get_toc(void);
246		extern "C" void *get_sp(void);
247		extern "C" void flush_icache_range(void *start, void *end);
#	Line 263 | Line 256 | extern void paranoia_check(void);
256		#endif
257
258
259	<	// Decode LZSS data
260	<	static void decode_lzss(const uint8 *src, uint8 *dest, int size)
259	>	#if EMULATED_PPC
260	>	/*
261	>	*  Return signal stack base
262	>	*/
263	>
264	>	uintptr SignalStackBase(void)
265		{
266	<	char dict[0x1000];
267	<	int run_mask = 0, dict_idx = 0xfee;
268	<	for (;;) {
269	<	if (run_mask < 0x100) {
270	<	// Start new run
271	<	if (--size < 0)
272	<	break;
273	<	run_mask = *src++ | 0xff00;
274	<	}
275	<	bool bit = run_mask & 1;
276	<	run_mask >>= 1;
277	<	if (bit) {
278	<	// Verbatim copy
279	<	if (--size < 0)
280	<	break;
281	<	int c = *src++;
282	<	dict[dict_idx++] = c;
283	<	*dest++ = c;
284	<	dict_idx &= 0xfff;
285	<	} else {
286	<	// Copy from dictionary
287	<	if (--size < 0)
288	<	break;
289	<	int idx = *src++;
290	<	if (--size < 0)
291	<	break;
292	<	int cnt = *src++;
293	<	idx |= (cnt << 4) & 0xf00;
294	<	cnt = (cnt & 0x0f) + 3;
295	<	while (cnt--) {
296	<	char c = dict[idx++];
297	<	dict[dict_idx++] = c;
298	<	*dest++ = c;
299	<	idx &= 0xfff;
300	<	dict_idx &= 0xfff;
301	<	}
302	<	}
303	<	}
266	>	return sig_stack + SIG_STACK_SIZE;
267	>	}
268	>
269	>
270	>	/*
271	>	*  Atomic operations
272	>	*/
273	>
274	>	#if HAVE_SPINLOCKS
275	>	static spinlock_t atomic_ops_lock = SPIN_LOCK_UNLOCKED;
276	>	#else
277	>	#define spin_lock(LOCK)
278	>	#define spin_unlock(LOCK)
279	>	#endif
280	>
281	>	int atomic_add(int *var, int v)
282	>	{
283	>	spin_lock(&atomic_ops_lock);
284	>	int ret = *var;
285	>	*var += v;
286	>	spin_unlock(&atomic_ops_lock);
287	>	return ret;
288	>	}
289	>
290	>	int atomic_and(int *var, int v)
291	>	{
292	>	spin_lock(&atomic_ops_lock);
293	>	int ret = *var;
294	>	*var &= v;
295	>	spin_unlock(&atomic_ops_lock);
296	>	return ret;
297	>	}
298	>
299	>	int atomic_or(int *var, int v)
300	>	{
301	>	spin_lock(&atomic_ops_lock);
302	>	int ret = *var;
303	>	*var |= v;
304	>	spin_unlock(&atomic_ops_lock);
305	>	return ret;
306		}
307	+	#endif
308
309
310		/*
#	Line 325 | Line 325 | int main(int argc, char **argv)
325		char str[256];
326		uint32 *boot_globs;
327		int16 i16;
328	–	int drive, driver;
328		int rom_fd;
329		FILE *proc_file;
330		const char *rom_path;
#	Line 335 | Line 334 | int main(int argc, char **argv)
334
335		// Initialize variables
336		RAMBase = 0;
338	–	mmap_RAMBase = NULL;
337		tzset();
338
339		// Print some info
#	Line 464 | Line 462 | int main(int argc, char **argv)
462		}
463
464		// Create Low Memory area (0x0000..0x3000)
465	<	if (mmap((char *)0x0000, 0x3000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) == (void *)-1) {
465	>	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
466		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
467		ErrorAlert(str);
468		goto quit;
#	Line 488 | Line 486 | int main(int argc, char **argv)
486		ErrorAlert(str);
487		goto quit;
488		}
489	<	kernel_data = (KernelData *)0x68ffe000;
489	>	kernel_data = (KernelData *)KERNEL_DATA_BASE;
490		emulator_data = &kernel_data->ed;
491	<	KernelDataAddr = (uint32)kernel_data;
491	>	KernelDataAddr = KERNEL_DATA_BASE;
492		D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
493
494	+	// Create area for SheepShaver data
495	+	if (!SheepMem::Init()) {
496	+	sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
497	+	ErrorAlert(str);
498	+	goto quit;
499	+	}
500	+
501		// Create area for Mac ROM
502	<	if (mmap((char *)ROM_BASE, ROM_AREA_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) == (void *)-1) {
502	>	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
503		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
504		ErrorAlert(str);
505		goto quit;
506		}
507	+	#if !EMULATED_PPC || defined(__powerpc__)
508	+	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
509	+	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
510	+	ErrorAlert(str);
511	+	goto quit;
512	+	}
513	+	#endif
514		rom_area_mapped = true;
515		D(bug("ROM area at %08x\n", ROM_BASE));
516
#	Line 509 | Line 521 | int main(int argc, char **argv)
521		RAMSize = 8*1024*1024;
522		}
523
524	<	mmap_RAMBase = mmap((void *)0x20000000, RAMSize, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0);
513	<	if (mmap_RAMBase == (void *)-1) {
524	>	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
525		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
526		ErrorAlert(str);
527		goto quit;
528		}
529	<	RAMBase = (uint32)mmap_RAMBase;
529	>	#if !EMULATED_PPC
530	>	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
531	>	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
532	>	ErrorAlert(str);
533	>	goto quit;
534	>	}
535	>	#endif
536	>	RAMBase = RAM_BASE;
537		ram_area_mapped = true;
538		D(bug("RAM area at %08x\n", RAMBase));
539
#	Line 540 | Line 558 | int main(int argc, char **argv)
558		rom_tmp = new uint8[ROM_SIZE];
559		actual = read(rom_fd, (void *)rom_tmp, ROM_SIZE);
560		close(rom_fd);
561	<	if (actual == ROM_SIZE) {
562	<	// Plain ROM image
563	<	memcpy((void *)ROM_BASE, rom_tmp, ROM_SIZE);
564	<	delete[] rom_tmp;
547	<	} else {
548	<	if (strncmp((char *)rom_tmp, "<CHRP-BOOT>", 11) == 0) {
549	<	// CHRP compressed ROM image
550	<	D(bug("CHRP ROM image\n"));
551	<	uint32 lzss_offset, lzss_size;
552	<
553	<	char *s = strstr((char *)rom_tmp, "constant lzss-offset");
554	<	if (s == NULL) {
555	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
556	<	goto quit;
557	<	}
558	<	s -= 7;
559	<	if (sscanf(s, "%06x", &lzss_offset) != 1) {
560	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
561	<	goto quit;
562	<	}
563	<	s = strstr((char *)rom_tmp, "constant lzss-size");
564	<	if (s == NULL) {
565	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
566	<	goto quit;
567	<	}
568	<	s -= 7;
569	<	if (sscanf(s, "%06x", &lzss_size) != 1) {
570	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
571	<	goto quit;
572	<	}
573	<	D(bug("Offset of compressed data: %08x\n", lzss_offset));
574	<	D(bug("Size of compressed data: %08x\n", lzss_size));
575	<
576	<	D(bug("Uncompressing ROM...\n"));
577	<	decode_lzss(rom_tmp + lzss_offset, (uint8 *)ROM_BASE, lzss_size);
578	<	delete[] rom_tmp;
579	<	} else if (rom_size != 4*1024*1024) {
561	>
562	>	// Decode Mac ROM
563	>	if (!DecodeROM(rom_tmp, actual)) {
564	>	if (rom_size != 4*1024*1024) {
565		ErrorAlert(GetString(STR_ROM_SIZE_ERR));
566		goto quit;
567		} else {
#	Line 584 | Line 569 | int main(int argc, char **argv)
569		goto quit;
570		}
571		}
572	+	delete[] rom_tmp;
573
574		// Load NVRAM
575		XPRAMInit();
576
577		// Set boot volume
578	<	drive = PrefsFindInt32("bootdrive");
578	>	i16 = PrefsFindInt32("bootdrive");
579		XPRAM[0x1378] = i16 >> 8;
580		XPRAM[0x1379] = i16 & 0xff;
581	<	driver = PrefsFindInt32("bootdriver");
581	>	i16 = PrefsFindInt32("bootdriver");
582		XPRAM[0x137a] = i16 >> 8;
583		XPRAM[0x137b] = i16 & 0xff;
584
#	Line 605 | Line 591 | int main(int argc, char **argv)
591		boot_globs[1] = htonl(RAMSize);
592		boot_globs[2] = htonl((uint32)-1);                      // End of bank table
593
594	+	// Init thunks
595	+	if (!ThunksInit())
596	+	goto quit;
597	+
598		// Init drivers
599		SonyInit();
600		DiskInit();
#	Line 614 | Line 604 | int main(int argc, char **argv)
604		// Init external file system
605		ExtFSInit();
606
607	+	// Init ADB
608	+	ADBInit();
609	+
610		// Init audio
611		AudioInit();
612
#	Line 643 | Line 636 | int main(int argc, char **argv)
636		#if !EMULATED_PPC
637		MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
638		#endif
639	<	mprotect((char *)ROM_BASE, ROM_AREA_SIZE, PROT_EXEC | PROT_READ);
639	>	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
640
641		// Initialize Kernel Data
642		memset(kernel_data, 0, sizeof(KernelData));
643		if (ROMType == ROMTYPE_NEWWORLD) {
644	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
645	<	static uint8 vector_lookup_tbl[128];
646	<	static uint8 vector_mask_tbl[64];
644	>	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
645	>	memset((void *)of_dev_tree, 0, 4 * sizeof(uint32));
646	>	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
647	>	uintptr vector_mask_tbl = SheepMem::Reserve(64);
648		memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
649	<	memset(vector_lookup_tbl, 0, 128);
650	<	memset(vector_mask_tbl, 0, 64);
649	>	memset((void *)vector_lookup_tbl, 0, 128);
650	>	memset((void *)vector_mask_tbl, 0, 64);
651		kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
652	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree);        // OF device tree base
653	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
654	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
652	>	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree);                        // OF device tree base
653	>	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
654	>	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
655		kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
656		kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
657		kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
#	Line 693 | Line 687 | int main(int argc, char **argv)
687		D(bug("Initializing Low Memory...\n"));
688		memset(NULL, 0, 0x3000);
689		WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
690	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data);                    // For trap replacement routines
690	>	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr);                                 // For trap replacement routines
691		WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
692		WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
693		WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
694	+	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage());                             // Pointer to read-only page with all bits set to 0
695		#if !EMULATED_PPC
696	<	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                    // TOC pointer of emulator
702	<	WriteMacInt32(XLM_ETHER_INIT, (uint32)InitStreamModule);                // DLPI ethernet driver functions
703	<	WriteMacInt32(XLM_ETHER_TERM, (uint32)TerminateStreamModule);
704	<	WriteMacInt32(XLM_ETHER_OPEN, (uint32)ether_open);
705	<	WriteMacInt32(XLM_ETHER_CLOSE, (uint32)ether_close);
706	<	WriteMacInt32(XLM_ETHER_WPUT, (uint32)ether_wput);
707	<	WriteMacInt32(XLM_ETHER_RSRV, (uint32)ether_rsrv);
708	<	WriteMacInt32(XLM_VIDEO_DOIO, (uint32)VideoDoDriverIO);
696	>	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                            // TOC pointer of emulator
697		#endif
698	+	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT));       // DLPI ethernet driver functions
699	+	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
700	+	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
701	+	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
702	+	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
703	+	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
704	+	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
705		D(bug("Low Memory initialized\n"));
706
707		// Start 60Hz thread
#	Line 767 | Line 762 | int main(int argc, char **argv)
762		ErrorAlert(str);
763		goto quit;
764		}
765	+	#endif
766
767		// Install interrupt signal handler
768		sigemptyset(&sigusr2_action.sa_mask);
769		sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
770	+	sigusr2_action.sa_flags = 0;
771	+	#if !EMULATED_PPC
772		sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
773	+	#endif
774		sigusr2_action.sa_restorer = NULL;
775		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
776		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
777		ErrorAlert(str);
778		goto quit;
779		}
781	–	#endif
780
781		// Get my thread ID and execute MacOS thread function
782		emul_thread = pthread_self();
#	Line 797 | Line 795 | quit:
795
796		static void Quit(void)
797		{
798	+	#if EMULATED_PPC
799	+	// Exit PowerPC emulation
800	+	exit_emul_ppc();
801	+	#endif
802	+
803		// Stop 60Hz thread
804		if (tick_thread_active) {
805		pthread_cancel(tick_thread);
#	Line 841 | Line 844 | static void Quit(void)
844		// Exit audio
845		AudioExit();
846
847	+	// Exit ADB
848	+	ADBExit();
849	+
850		// Exit video
851		VideoExit();
852
#	Line 853 | Line 859 | static void Quit(void)
859		DiskExit();
860		SonyExit();
861
862	+	// Delete SheepShaver globals
863	+	SheepMem::Exit();
864	+
865		// Delete RAM area
866		if (ram_area_mapped)
867	<	munmap(mmap_RAMBase, RAMSize);
867	>	vm_release((char *)RAM_BASE, RAMSize);
868
869		// Delete ROM area
870		if (rom_area_mapped)
871	<	munmap((char *)ROM_BASE, ROM_AREA_SIZE);
871	>	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
872
873		// Delete Kernel Data area
874		if (kernel_area >= 0) {
#	Line 900 | Line 909 | static void Quit(void)
909		*/
910
911		#if EMULATED_PPC
903	–	extern void emul_ppc(uint32 start);
904	–	extern void init_emul_ppc(void);
912		void jump_to_rom(uint32 entry)
913		{
914		init_emul_ppc();
#	Line 970 | Line 977 | void Execute68kTrap(uint16 trap, M68kReg
977
978
979		/*
973	–	*  Execute PPC code from EMUL_OP routine (real mode switch)
974	–	*/
975	–
976	–	void ExecutePPC(void (*func)())
977	–	{
978	–	uint32 tvect[2] = {(uint32)func, 0};    // Fake TVECT
979	–	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
980	–	M68kRegisters r;
981	–	Execute68k((uint32)&desc, &r);
982	–	}
983	–
984	–
985	–	/*
980		*  Quit emulator (cause return from jump_to_rom)
981		*/
982
#	Line 1041 | Line 1035 | void Dump68kRegs(M68kRegisters *r)
1035
1036		void MakeExecutable(int dummy, void *start, uint32 length)
1037		{
1038	<	#if !EMULATED_PPC
1045	<	if (((uint32)start >= ROM_BASE) && ((uint32)start < (ROM_BASE + ROM_SIZE)))
1038	>	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1039		return;
1040	<	flush_icache_range(start, (void *)((uint32)start + length));
1040	>	#if EMULATED_PPC
1041	>	FlushCodeCache((uintptr)start, (uintptr)start + length);
1042	>	#else
1043	>	flush_icache_range(start, (void *)((uintptr)start + length));
1044		#endif
1045		}
1046
#	Line 1055 | Line 1051 | void MakeExecutable(int dummy, void *sta
1051
1052		void PatchAfterStartup(void)
1053		{
1054	<	ExecutePPC(VideoInstallAccel);
1054	>	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1055		InstallExtFS();
1056		}
1057
#	Line 1158 | Line 1154 | static void *tick_func(void *arg)
1154
1155		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1156		{
1157	<	// nothing to do
1157	>	#ifdef HAVE_PTHREADS
1158	>	pthread_attr_init(attr);
1159	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1160	>	// Some of these only work for superuser
1161	>	if (geteuid() == 0) {
1162	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1163	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1164	>	struct sched_param fifo_param;
1165	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1166	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1167	>	priority);
1168	>	pthread_attr_setschedparam(attr, &fifo_param);
1169	>	}
1170	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1171	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1172	>	// If system scope is not available (eg. we're not running
1173	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1174	>	// scope.  It exposes pthread scheduling to the kernel,
1175	>	// without setting realtime priority.
1176	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1177	>	#endif
1178	>	}
1179	>	#endif
1180	>	#endif
1181		}
1182
1183
#	Line 1166 | Line 1185 | void Set_pthread_attr(pthread_attr_t *at
1185		*  Mutexes
1186		*/
1187
1188	+	#ifdef HAVE_PTHREADS
1189	+
1190	+	struct B2_mutex {
1191	+	B2_mutex() {
1192	+	pthread_mutexattr_t attr;
1193	+	pthread_mutexattr_init(&attr);
1194	+	// Initialize the mutex for priority inheritance --
1195	+	// required for accurate timing.
1196	+	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1197	+	pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1198	+	#endif
1199	+	#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
1200	+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
1201	+	#endif
1202	+	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPSHARED
1203	+	pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_PRIVATE);
1204	+	#endif
1205	+	pthread_mutex_init(&m, &attr);
1206	+	pthread_mutexattr_destroy(&attr);
1207	+	}
1208	+	~B2_mutex() {
1209	+	pthread_mutex_trylock(&m); // Make sure it's locked before
1210	+	pthread_mutex_unlock(&m);  // unlocking it.
1211	+	pthread_mutex_destroy(&m);
1212	+	}
1213	+	pthread_mutex_t m;
1214	+	};
1215	+
1216	+	B2_mutex *B2_create_mutex(void)
1217	+	{
1218	+	return new B2_mutex;
1219	+	}
1220	+
1221	+	void B2_lock_mutex(B2_mutex *mutex)
1222	+	{
1223	+	pthread_mutex_lock(&mutex->m);
1224	+	}
1225	+
1226	+	void B2_unlock_mutex(B2_mutex *mutex)
1227	+	{
1228	+	pthread_mutex_unlock(&mutex->m);
1229	+	}
1230	+
1231	+	void B2_delete_mutex(B2_mutex *mutex)
1232	+	{
1233	+	delete mutex;
1234	+	}
1235	+
1236	+	#else
1237	+
1238		struct B2_mutex {
1239		int dummy;
1240		};
#	Line 1188 | Line 1257 | void B2_delete_mutex(B2_mutex *mutex)
1257		delete mutex;
1258		}
1259
1260	+	#endif
1261	+
1262
1263		/*
1264		*  Trigger signal USR2 from another thread
1265		*/
1266
1267	+	#if !EMULATED_PPC || ASYNC_IRQ
1268		void TriggerInterrupt(void)
1269		{
1198	–	#if EMULATED_PPC
1199	–	WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1200	–	#else
1201	–	#if 0
1202	–	WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1203	–	#else
1270		if (ready_for_signals)
1271		pthread_kill(emul_thread, SIGUSR2);
1206	–	#endif
1207	–	#endif
1272		}
1273	+	#endif
1274
1275
1276		/*
#	Line 1245 | Line 1310 | void EnableInterrupt(void)
1310		}
1311
1312
1248	–	#if !EMULATED_PPC
1313		/*
1314		*  USR2 handler
1315		*/
1316
1317	+	#if EMULATED_PPC
1318	+	static void sigusr2_handler(int sig)
1319	+	{
1320	+	#if ASYNC_IRQ
1321	+	extern void HandleInterrupt(void);
1322	+	HandleInterrupt();
1323	+	#endif
1324	+	}
1325	+	#else
1326		static void sigusr2_handler(int sig, sigcontext_struct *sc)
1327		{
1328		pt_regs *r = sc->regs;
#	Line 1319 | Line 1392 | static void sigusr2_handler(int sig, sig
1392		if (InterruptFlags & INTFLAG_VIA) {
1393		ClearInterruptFlag(INTFLAG_VIA);
1394		ADBInterrupt();
1395	<	ExecutePPC(VideoVBL);
1395	>	ExecuteNative(NATIVE_VIDEO_VBL);
1396		}
1397		}
1398		#endif
#	Line 1331 | Line 1404 | static void sigusr2_handler(int sig, sig
1404		}
1405		break;
1406		#endif
1334	–
1407		}
1408		}
1409	+	#endif
1410
1411
1412		/*
1413		*  SIGSEGV handler
1414		*/
1415
1416	+	#if !EMULATED_PPC
1417		static void sigsegv_handler(int sig, sigcontext_struct *sc)
1418		{
1419		pt_regs *r = sc->regs;
1420	+
1421	+	// Get effective address
1422	+	uint32 addr = r->dar;
1423	+
1424	+	#if ENABLE_VOSF
1425	+	// Handle screen fault.
1426	+	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1427	+	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1428	+	return;
1429	+	#endif
1430	+
1431		num_segv++;
1432
1433		// Fault in Mac ROM or RAM?
1434		bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1435		if (mac_fault) {
1436
1352	–	// Get opcode and divide into fields
1353	–	uint32 opcode = *((uint32 *)r->nip);
1354	–	uint32 primop = opcode >> 26;
1355	–	uint32 exop = (opcode >> 1) & 0x3ff;
1356	–	uint32 ra = (opcode >> 16) & 0x1f;
1357	–	uint32 rb = (opcode >> 11) & 0x1f;
1358	–	uint32 rd = (opcode >> 21) & 0x1f;
1359	–	int32 imm = (int16)(opcode & 0xffff);
1360	–
1437		// "VM settings" during MacOS 8 installation
1438		if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1439		r->nip += 4;
#	Line 1385 | Line 1461 | static void sigsegv_handler(int sig, sig
1461		return;
1462		}
1463
1464	+	// Get opcode and divide into fields
1465	+	uint32 opcode = *((uint32 *)r->nip);
1466	+	uint32 primop = opcode >> 26;
1467	+	uint32 exop = (opcode >> 1) & 0x3ff;
1468	+	uint32 ra = (opcode >> 16) & 0x1f;
1469	+	uint32 rb = (opcode >> 11) & 0x1f;
1470	+	uint32 rd = (opcode >> 21) & 0x1f;
1471	+	int32 imm = (int16)(opcode & 0xffff);
1472	+
1473		// Analyze opcode
1474		enum {
1475		TYPE_UNKNOWN,
#	Line 1468 | Line 1553 | static void sigsegv_handler(int sig, sig
1553		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1554		}
1555
1471	–	// Calculate effective address
1472	–	uint32 addr = 0;
1473	–	switch (addr_mode) {
1474	–	case MODE_X:
1475	–	case MODE_UX:
1476	–	if (ra == 0)
1477	–	addr = r->gpr[rb];
1478	–	else
1479	–	addr = r->gpr[ra] + r->gpr[rb];
1480	–	break;
1481	–	case MODE_NORM:
1482	–	case MODE_U:
1483	–	if (ra == 0)
1484	–	addr = (int32)(int16)imm;
1485	–	else
1486	–	addr = r->gpr[ra] + (int32)(int16)imm;
1487	–	break;
1488	–	default:
1489	–	break;
1490	–	}
1491	–
1556		// Ignore ROM writes
1557		if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1558		//                      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));
#	Line 1725 | Line 1789 | rti:;
1789
1790
1791		/*
1792	+	*  Helpers to share 32-bit addressable data with MacOS
1793	+	*/
1794	+
1795	+	bool SheepMem::Init(void)
1796	+	{
1797	+	const int page_size = getpagesize();
1798	+
1799	+	// Allocate SheepShaver globals
1800	+	if (vm_acquire_fixed((char *)base, size) < 0)
1801	+	return false;
1802	+
1803	+	// Allocate page with all bits set to 0
1804	+	zero_page = base + size;
1805	+	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
1806	+	return false;
1807	+	memset((char *)zero_page, 0, page_size);
1808	+	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
1809	+	return false;
1810	+
1811	+	#if EMULATED_PPC
1812	+	// Allocate alternate stack for PowerPC interrupt routine
1813	+	sig_stack = zero_page + page_size;
1814	+	if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0)
1815	+	return false;
1816	+	#endif
1817	+
1818	+	top = base + size;
1819	+	return true;
1820	+	}
1821	+
1822	+	void SheepMem::Exit(void)
1823	+	{
1824	+	if (top) {
1825	+	const int page_size = getpagesize();
1826	+
1827	+	// Delete SheepShaver globals
1828	+	vm_release((void *)base, size);
1829	+
1830	+	// Delete zero page
1831	+	vm_release((void *)zero_page, page_size);
1832	+
1833	+	#if EMULATED_PPC
1834	+	// Delete alternate stack for PowerPC interrupt routine
1835	+	vm_release((void *)sig_stack, SIG_STACK_SIZE);
1836	+	#endif
1837	+	}
1838	+	}
1839	+
1840	+
1841	+	/*
1842		*  Display alert
1843		*/
1844

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