ViewVC Help

View File | Revision Log | Show Annotations | Revision Graph | Root Listing

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 1.15 by gbeauche, 2003-12-04T17:26:37Z

#	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
187		static int zero_fd = 0;                                         // FD of /dev/zero
#	Line 205 | Line 189 | static bool lm_area_mapped = false;                    //
189		static int kernel_area = -1;                            // SHM ID of Kernel Data area
190		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
191		static bool ram_area_mapped = false;            // Flag: Mac RAM mmap()ped
208	–	static void *mmap_RAMBase = NULL;                       // Base address of mmap()ed RAM area
192		static KernelData *kernel_data;                         // Pointer to Kernel Data
193		static EmulatorData *emulator_data;
194
#	Line 220 | Line 203 | static pthread_t emul_thread;                          // MacO
203		static bool ready_for_signals = false;          // Handler installed, signals can be sent
204		static int64 num_segv = 0;                                      // Number of handled SEGV signals
205
223	–	#if !EMULATED_PPC
206		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
207	+	#if !EMULATED_PPC
208		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
209		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
210		static void *sig_stack = NULL;                          // Stack for signal handlers
#	Line 230 | Line 213 | static bool emul_thread_fatal = false;
213		static sigregs sigsegv_regs;                            // Register dump when crashed
214		#endif
215
216	+	uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
217	+	uintptr SheepMem::top = 0;                                      // Top of SheepShaver data (stack like storage)
218	+
219
220		// Prototypes
221		static void Quit(void);
222		static void *emul_func(void *arg);
223		static void *nvram_func(void *arg);
224		static void *tick_func(void *arg);
225	<	#if !EMULATED_PPC
225	>	#if EMULATED_PPC
226	>	static void sigusr2_handler(int sig);
227	>	extern void emul_ppc(uint32 start);
228	>	extern void init_emul_ppc(void);
229	>	extern void exit_emul_ppc(void);
230	>	#else
231		static void sigusr2_handler(int sig, sigcontext_struct *sc);
232		static void sigsegv_handler(int sig, sigcontext_struct *sc);
233		static void sigill_handler(int sig, sigcontext_struct *sc);
#	Line 244 | Line 235 | static void sigill_handler(int sig, sigc
235
236
237		// From asm_linux.S
238	<	#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
238	>	#if !EMULATED_PPC
239		extern "C" void *get_toc(void);
240		extern "C" void *get_sp(void);
241		extern "C" void flush_icache_range(void *start, void *end);
#	Line 263 | Line 250 | extern void paranoia_check(void);
250		#endif
251
252
253	<	// Decode LZSS data
254	<	static void decode_lzss(const uint8 *src, uint8 *dest, int size)
253	>	#if EMULATED_PPC
254	>	/*
255	>	*  Atomic operations
256	>	*/
257	>
258	>	#if HAVE_SPINLOCKS
259	>	static spinlock_t atomic_ops_lock = SPIN_LOCK_UNLOCKED;
260	>	#else
261	>	#define spin_lock(LOCK)
262	>	#define spin_unlock(LOCK)
263	>	#endif
264	>
265	>	int atomic_add(int *var, int v)
266	>	{
267	>	spin_lock(&atomic_ops_lock);
268	>	int ret = *var;
269	>	*var += v;
270	>	spin_unlock(&atomic_ops_lock);
271	>	return ret;
272	>	}
273	>
274	>	int atomic_and(int *var, int v)
275		{
276	<	char dict[0x1000];
277	<	int run_mask = 0, dict_idx = 0xfee;
278	<	for (;;) {
279	<	if (run_mask < 0x100) {
280	<	// Start new run
274	<	if (--size < 0)
275	<	break;
276	<	run_mask = *src++ | 0xff00;
277	<	}
278	<	bool bit = run_mask & 1;
279	<	run_mask >>= 1;
280	<	if (bit) {
281	<	// Verbatim copy
282	<	if (--size < 0)
283	<	break;
284	<	int c = *src++;
285	<	dict[dict_idx++] = c;
286	<	*dest++ = c;
287	<	dict_idx &= 0xfff;
288	<	} else {
289	<	// Copy from dictionary
290	<	if (--size < 0)
291	<	break;
292	<	int idx = *src++;
293	<	if (--size < 0)
294	<	break;
295	<	int cnt = *src++;
296	<	idx |= (cnt << 4) & 0xf00;
297	<	cnt = (cnt & 0x0f) + 3;
298	<	while (cnt--) {
299	<	char c = dict[idx++];
300	<	dict[dict_idx++] = c;
301	<	*dest++ = c;
302	<	idx &= 0xfff;
303	<	dict_idx &= 0xfff;
304	<	}
305	<	}
306	<	}
276	>	spin_lock(&atomic_ops_lock);
277	>	int ret = *var;
278	>	*var &= v;
279	>	spin_unlock(&atomic_ops_lock);
280	>	return ret;
281		}
282
283	+	int atomic_or(int *var, int v)
284	+	{
285	+	spin_lock(&atomic_ops_lock);
286	+	int ret = *var;
287	+	*var |= v;
288	+	spin_unlock(&atomic_ops_lock);
289	+	return ret;
290	+	}
291	+	#endif
292	+
293
294		/*
295		*  Main program
#	Line 325 | Line 309 | int main(int argc, char **argv)
309		char str[256];
310		uint32 *boot_globs;
311		int16 i16;
328	–	int drive, driver;
312		int rom_fd;
313		FILE *proc_file;
314		const char *rom_path;
#	Line 335 | Line 318 | int main(int argc, char **argv)
318
319		// Initialize variables
320		RAMBase = 0;
338	–	mmap_RAMBase = NULL;
321		tzset();
322
323		// Print some info
#	Line 464 | Line 446 | int main(int argc, char **argv)
446		}
447
448		// Create Low Memory area (0x0000..0x3000)
449	<	if (mmap((char *)0x0000, 0x3000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) == (void *)-1) {
449	>	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
450		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
451		ErrorAlert(str);
452		goto quit;
#	Line 488 | Line 470 | int main(int argc, char **argv)
470		ErrorAlert(str);
471		goto quit;
472		}
473	<	kernel_data = (KernelData *)0x68ffe000;
473	>	kernel_data = (KernelData *)KERNEL_DATA_BASE;
474		emulator_data = &kernel_data->ed;
475	<	KernelDataAddr = (uint32)kernel_data;
475	>	KernelDataAddr = KERNEL_DATA_BASE;
476		D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
477
478	+	// Create area for SheepShaver data
479	+	if (!SheepMem::Init()) {
480	+	sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
481	+	ErrorAlert(str);
482	+	goto quit;
483	+	}
484	+
485		// Create area for Mac ROM
486	<	if (mmap((char *)ROM_BASE, ROM_AREA_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) == (void *)-1) {
486	>	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
487		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
488		ErrorAlert(str);
489		goto quit;
490		}
491	+	#if !EMULATED_PPC || defined(__powerpc__)
492	+	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
493	+	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
494	+	ErrorAlert(str);
495	+	goto quit;
496	+	}
497	+	#endif
498		rom_area_mapped = true;
499		D(bug("ROM area at %08x\n", ROM_BASE));
500
#	Line 509 | Line 505 | int main(int argc, char **argv)
505		RAMSize = 8*1024*1024;
506		}
507
508	<	mmap_RAMBase = mmap((void *)0x20000000, RAMSize, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0);
509	<	if (mmap_RAMBase == (void *)-1) {
508	>	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
509	>	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
510	>	ErrorAlert(str);
511	>	goto quit;
512	>	}
513	>	#if !EMULATED_PPC
514	>	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
515		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
516		ErrorAlert(str);
517		goto quit;
518		}
519	<	RAMBase = (uint32)mmap_RAMBase;
519	>	#endif
520	>	RAMBase = RAM_BASE;
521		ram_area_mapped = true;
522		D(bug("RAM area at %08x\n", RAMBase));
523
#	Line 540 | Line 542 | int main(int argc, char **argv)
542		rom_tmp = new uint8[ROM_SIZE];
543		actual = read(rom_fd, (void *)rom_tmp, ROM_SIZE);
544		close(rom_fd);
545	<	if (actual == ROM_SIZE) {
546	<	// Plain ROM image
547	<	memcpy((void *)ROM_BASE, rom_tmp, ROM_SIZE);
548	<	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) {
545	>
546	>	// Decode Mac ROM
547	>	if (!DecodeROM(rom_tmp, actual)) {
548	>	if (rom_size != 4*1024*1024) {
549		ErrorAlert(GetString(STR_ROM_SIZE_ERR));
550		goto quit;
551		} else {
#	Line 584 | Line 553 | int main(int argc, char **argv)
553		goto quit;
554		}
555		}
556	+	delete[] rom_tmp;
557
558		// Load NVRAM
559		XPRAMInit();
560
561		// Set boot volume
562	<	drive = PrefsFindInt32("bootdrive");
562	>	i16 = PrefsFindInt32("bootdrive");
563		XPRAM[0x1378] = i16 >> 8;
564		XPRAM[0x1379] = i16 & 0xff;
565	<	driver = PrefsFindInt32("bootdriver");
565	>	i16 = PrefsFindInt32("bootdriver");
566		XPRAM[0x137a] = i16 >> 8;
567		XPRAM[0x137b] = i16 & 0xff;
568
#	Line 605 | Line 575 | int main(int argc, char **argv)
575		boot_globs[1] = htonl(RAMSize);
576		boot_globs[2] = htonl((uint32)-1);                      // End of bank table
577
578	+	// Init thunks
579	+	if (!ThunksInit())
580	+	goto quit;
581	+
582		// Init drivers
583		SonyInit();
584		DiskInit();
#	Line 643 | Line 617 | int main(int argc, char **argv)
617		#if !EMULATED_PPC
618		MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
619		#endif
620	<	mprotect((char *)ROM_BASE, ROM_AREA_SIZE, PROT_EXEC | PROT_READ);
620	>	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
621
622		// Initialize Kernel Data
623		memset(kernel_data, 0, sizeof(KernelData));
624		if (ROMType == ROMTYPE_NEWWORLD) {
625	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
626	<	static uint8 vector_lookup_tbl[128];
627	<	static uint8 vector_mask_tbl[64];
625	>	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
626	>	memset((void *)of_dev_tree, 0, 4 * sizeof(uint32));
627	>	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
628	>	uintptr vector_mask_tbl = SheepMem::Reserve(64);
629		memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
630	<	memset(vector_lookup_tbl, 0, 128);
631	<	memset(vector_mask_tbl, 0, 64);
630	>	memset((void *)vector_lookup_tbl, 0, 128);
631	>	memset((void *)vector_mask_tbl, 0, 64);
632		kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
633	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree);        // OF device tree base
634	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
635	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
633	>	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree);                        // OF device tree base
634	>	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
635	>	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
636		kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
637		kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
638		kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
#	Line 693 | Line 668 | int main(int argc, char **argv)
668		D(bug("Initializing Low Memory...\n"));
669		memset(NULL, 0, 0x3000);
670		WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
671	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data);                    // For trap replacement routines
671	>	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr);                                 // For trap replacement routines
672		WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
673		WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
674		WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
675	<	#if !EMULATED_PPC
675	>	#if EMULATED_PPC
676	>	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT));
677	>	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
678	>	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
679	>	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
680	>	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
681	>	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
682	>	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
683	>	#else
684		WriteMacInt32(XLM_TOC, (uint32)TOC);                                                    // TOC pointer of emulator
685		WriteMacInt32(XLM_ETHER_INIT, (uint32)InitStreamModule);                // DLPI ethernet driver functions
686		WriteMacInt32(XLM_ETHER_TERM, (uint32)TerminateStreamModule);
#	Line 767 | Line 750 | int main(int argc, char **argv)
750		ErrorAlert(str);
751		goto quit;
752		}
753	+	#endif
754
755		// Install interrupt signal handler
756		sigemptyset(&sigusr2_action.sa_mask);
757		sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
758	+	sigusr2_action.sa_flags = 0;
759	+	#if !EMULATED_PPC
760		sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
761	+	#endif
762		sigusr2_action.sa_restorer = NULL;
763		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
764		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
765		ErrorAlert(str);
766		goto quit;
767		}
781	–	#endif
768
769		// Get my thread ID and execute MacOS thread function
770		emul_thread = pthread_self();
#	Line 797 | Line 783 | quit:
783
784		static void Quit(void)
785		{
786	+	#if EMULATED_PPC
787	+	// Exit PowerPC emulation
788	+	exit_emul_ppc();
789	+	#endif
790	+
791		// Stop 60Hz thread
792		if (tick_thread_active) {
793		pthread_cancel(tick_thread);
#	Line 853 | Line 844 | static void Quit(void)
844		DiskExit();
845		SonyExit();
846
847	+	// Delete SheepShaver globals
848	+	SheepMem::Exit();
849	+
850		// Delete RAM area
851		if (ram_area_mapped)
852	<	munmap(mmap_RAMBase, RAMSize);
852	>	vm_release((char *)RAM_BASE, RAMSize);
853
854		// Delete ROM area
855		if (rom_area_mapped)
856	<	munmap((char *)ROM_BASE, ROM_AREA_SIZE);
856	>	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
857
858		// Delete Kernel Data area
859		if (kernel_area >= 0) {
#	Line 900 | Line 894 | static void Quit(void)
894		*/
895
896		#if EMULATED_PPC
903	–	extern void emul_ppc(uint32 start);
904	–	extern void init_emul_ppc(void);
897		void jump_to_rom(uint32 entry)
898		{
899		init_emul_ppc();
#	Line 966 | Line 958 | void Execute68kTrap(uint16 trap, M68kReg
958		uint16 proc[2] = {trap, M68K_RTS};
959		Execute68k((uint32)proc, r);
960		}
969	–	#endif
961
962
963		/*
#	Line 976 | Line 967 | void Execute68kTrap(uint16 trap, M68kReg
967		void ExecutePPC(void (*func)())
968		{
969		uint32 tvect[2] = {(uint32)func, 0};    // Fake TVECT
970	<	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
970	>	SheepRoutineDescriptor desc(0, tvect);
971		M68kRegisters r;
972		Execute68k((uint32)&desc, &r);
973		}
974	+	#endif
975
976
977		/*
#	Line 1041 | Line 1033 | void Dump68kRegs(M68kRegisters *r)
1033
1034		void MakeExecutable(int dummy, void *start, uint32 length)
1035		{
1036	<	#if !EMULATED_PPC
1045	<	if (((uint32)start >= ROM_BASE) && ((uint32)start < (ROM_BASE + ROM_SIZE)))
1036	>	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1037		return;
1038	<	flush_icache_range(start, (void *)((uint32)start + length));
1038	>	#if EMULATED_PPC
1039	>	FlushCodeCache((uintptr)start, (uintptr)start + length);
1040	>	#else
1041	>	flush_icache_range(start, (void *)((uintptr)start + length));
1042		#endif
1043		}
1044
#	Line 1055 | Line 1049 | void MakeExecutable(int dummy, void *sta
1049
1050		void PatchAfterStartup(void)
1051		{
1052	+	#if EMULATED_PPC
1053	+	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1054	+	#else
1055		ExecutePPC(VideoInstallAccel);
1056	+	#endif
1057		InstallExtFS();
1058		}
1059
#	Line 1158 | Line 1156 | static void *tick_func(void *arg)
1156
1157		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1158		{
1159	<	// nothing to do
1159	>	#ifdef HAVE_PTHREADS
1160	>	pthread_attr_init(attr);
1161	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1162	>	// Some of these only work for superuser
1163	>	if (geteuid() == 0) {
1164	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1165	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1166	>	struct sched_param fifo_param;
1167	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1168	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1169	>	priority);
1170	>	pthread_attr_setschedparam(attr, &fifo_param);
1171	>	}
1172	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1173	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1174	>	// If system scope is not available (eg. we're not running
1175	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1176	>	// scope.  It exposes pthread scheduling to the kernel,
1177	>	// without setting realtime priority.
1178	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1179	>	#endif
1180	>	}
1181	>	#endif
1182	>	#endif
1183		}
1184
1185
#	Line 1166 | Line 1187 | void Set_pthread_attr(pthread_attr_t *at
1187		*  Mutexes
1188		*/
1189
1190	+	#ifdef HAVE_PTHREADS
1191	+
1192	+	struct B2_mutex {
1193	+	B2_mutex() {
1194	+	pthread_mutexattr_t attr;
1195	+	pthread_mutexattr_init(&attr);
1196	+	// Initialize the mutex for priority inheritance --
1197	+	// required for accurate timing.
1198	+	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1199	+	pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1200	+	#endif
1201	+	#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
1202	+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
1203	+	#endif
1204	+	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPSHARED
1205	+	pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_PRIVATE);
1206	+	#endif
1207	+	pthread_mutex_init(&m, &attr);
1208	+	pthread_mutexattr_destroy(&attr);
1209	+	}
1210	+	~B2_mutex() {
1211	+	pthread_mutex_trylock(&m); // Make sure it's locked before
1212	+	pthread_mutex_unlock(&m);  // unlocking it.
1213	+	pthread_mutex_destroy(&m);
1214	+	}
1215	+	pthread_mutex_t m;
1216	+	};
1217	+
1218	+	B2_mutex *B2_create_mutex(void)
1219	+	{
1220	+	return new B2_mutex;
1221	+	}
1222	+
1223	+	void B2_lock_mutex(B2_mutex *mutex)
1224	+	{
1225	+	pthread_mutex_lock(&mutex->m);
1226	+	}
1227	+
1228	+	void B2_unlock_mutex(B2_mutex *mutex)
1229	+	{
1230	+	pthread_mutex_unlock(&mutex->m);
1231	+	}
1232	+
1233	+	void B2_delete_mutex(B2_mutex *mutex)
1234	+	{
1235	+	delete mutex;
1236	+	}
1237	+
1238	+	#else
1239	+
1240		struct B2_mutex {
1241		int dummy;
1242		};
#	Line 1188 | Line 1259 | void B2_delete_mutex(B2_mutex *mutex)
1259		delete mutex;
1260		}
1261
1262	+	#endif
1263	+
1264
1265		/*
1266		*  Trigger signal USR2 from another thread
1267		*/
1268
1269	+	#if !EMULATED_PPC || ASYNC_IRQ
1270		void TriggerInterrupt(void)
1271		{
1198	–	#if EMULATED_PPC
1199	–	WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1200	–	#else
1201	–	#if 0
1202	–	WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1203	–	#else
1272		if (ready_for_signals)
1273		pthread_kill(emul_thread, SIGUSR2);
1206	–	#endif
1207	–	#endif
1274		}
1275	+	#endif
1276
1277
1278		/*
#	Line 1245 | Line 1312 | void EnableInterrupt(void)
1312		}
1313
1314
1248	–	#if !EMULATED_PPC
1315		/*
1316		*  USR2 handler
1317		*/
1318
1319	+	#if EMULATED_PPC
1320	+	static void sigusr2_handler(int sig)
1321	+	{
1322	+	#if ASYNC_IRQ
1323	+	extern void HandleInterrupt(void);
1324	+	HandleInterrupt();
1325	+	#endif
1326	+	}
1327	+	#else
1328		static void sigusr2_handler(int sig, sigcontext_struct *sc)
1329		{
1330		pt_regs *r = sc->regs;
#	Line 1331 | Line 1406 | static void sigusr2_handler(int sig, sig
1406		}
1407		break;
1408		#endif
1334	–
1409		}
1410		}
1411	+	#endif
1412
1413
1414		/*
1415		*  SIGSEGV handler
1416		*/
1417
1418	+	#if !EMULATED_PPC
1419		static void sigsegv_handler(int sig, sigcontext_struct *sc)
1420		{
1421		pt_regs *r = sc->regs;
1422	+
1423	+	// Get effective address
1424	+	uint32 addr = r->dar;
1425	+
1426	+	#if ENABLE_VOSF
1427	+	// Handle screen fault.
1428	+	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1429	+	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1430	+	return;
1431	+	#endif
1432	+
1433		num_segv++;
1434
1435		// Fault in Mac ROM or RAM?
1436		bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1437		if (mac_fault) {
1438
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	–
1439		// "VM settings" during MacOS 8 installation
1440		if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1441		r->nip += 4;
#	Line 1385 | Line 1463 | static void sigsegv_handler(int sig, sig
1463		return;
1464		}
1465
1466	+	// Get opcode and divide into fields
1467	+	uint32 opcode = *((uint32 *)r->nip);
1468	+	uint32 primop = opcode >> 26;
1469	+	uint32 exop = (opcode >> 1) & 0x3ff;
1470	+	uint32 ra = (opcode >> 16) & 0x1f;
1471	+	uint32 rb = (opcode >> 11) & 0x1f;
1472	+	uint32 rd = (opcode >> 21) & 0x1f;
1473	+	int32 imm = (int16)(opcode & 0xffff);
1474	+
1475		// Analyze opcode
1476		enum {
1477		TYPE_UNKNOWN,
#	Line 1468 | Line 1555 | static void sigsegv_handler(int sig, sig
1555		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1556		}
1557
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	–
1558		// Ignore ROM writes
1559		if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1560		//                      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 1791 | rti:;
1791
1792
1793		/*
1794	+	*  Helpers to share 32-bit addressable data with MacOS
1795	+	*/
1796	+
1797	+	bool SheepMem::Init(void)
1798	+	{
1799	+	if (vm_acquire_fixed((char *)base, size) < 0)
1800	+	return false;
1801	+	top = base + size;
1802	+	return true;
1803	+	}
1804	+
1805	+	void SheepMem::Exit(void)
1806	+	{
1807	+	if (top)
1808	+	vm_release((void *)base, size);
1809	+	}
1810	+
1811	+
1812	+	/*
1813		*  Display alert
1814		*/
1815

Diff Legend

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