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 1.20 by gbeauche, 2003-12-05T13:37:54Z

#	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 uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
209	+	#else
210		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
211		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
212		static void *sig_stack = NULL;                          // Stack for signal handlers
#	Line 230 | Line 215 | static bool emul_thread_fatal = false;
215		static sigregs sigsegv_regs;                            // Register dump when crashed
216		#endif
217
218	+	uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
219	+	uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
220	+	uintptr SheepMem::top = 0;                                      // Top of SheepShaver data (stack like storage)
221	+
222
223		// Prototypes
224		static void Quit(void);
225		static void *emul_func(void *arg);
226		static void *nvram_func(void *arg);
227		static void *tick_func(void *arg);
228	<	#if !EMULATED_PPC
228	>	#if EMULATED_PPC
229	>	static void sigusr2_handler(int sig);
230	>	extern void emul_ppc(uint32 start);
231	>	extern void init_emul_ppc(void);
232	>	extern void exit_emul_ppc(void);
233	>	#else
234		static void sigusr2_handler(int sig, sigcontext_struct *sc);
235		static void sigsegv_handler(int sig, sigcontext_struct *sc);
236		static void sigill_handler(int sig, sigcontext_struct *sc);
#	Line 244 | Line 238 | static void sigill_handler(int sig, sigc
238
239
240		// From asm_linux.S
241	<	#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
241	>	#if !EMULATED_PPC
242		extern "C" void *get_toc(void);
243		extern "C" void *get_sp(void);
244		extern "C" void flush_icache_range(void *start, void *end);
#	Line 263 | Line 253 | extern void paranoia_check(void);
253		#endif
254
255
256	<	// Decode LZSS data
257	<	static void decode_lzss(const uint8 *src, uint8 *dest, int size)
256	>	#if EMULATED_PPC
257	>	/*
258	>	*  Return signal stack base
259	>	*/
260	>
261	>	uintptr SignalStackBase(void)
262		{
263	<	char dict[0x1000];
270	<	int run_mask = 0, dict_idx = 0xfee;
271	<	for (;;) {
272	<	if (run_mask < 0x100) {
273	<	// 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	<	}
263	>	return sig_stack + SIG_STACK_SIZE;
264		}
265
266
267		/*
268	+	*  Atomic operations
269	+	*/
270	+
271	+	#if HAVE_SPINLOCKS
272	+	static spinlock_t atomic_ops_lock = SPIN_LOCK_UNLOCKED;
273	+	#else
274	+	#define spin_lock(LOCK)
275	+	#define spin_unlock(LOCK)
276	+	#endif
277	+
278	+	int atomic_add(int *var, int v)
279	+	{
280	+	spin_lock(&atomic_ops_lock);
281	+	int ret = *var;
282	+	*var += v;
283	+	spin_unlock(&atomic_ops_lock);
284	+	return ret;
285	+	}
286	+
287	+	int atomic_and(int *var, int v)
288	+	{
289	+	spin_lock(&atomic_ops_lock);
290	+	int ret = *var;
291	+	*var &= v;
292	+	spin_unlock(&atomic_ops_lock);
293	+	return ret;
294	+	}
295	+
296	+	int atomic_or(int *var, int v)
297	+	{
298	+	spin_lock(&atomic_ops_lock);
299	+	int ret = *var;
300	+	*var |= v;
301	+	spin_unlock(&atomic_ops_lock);
302	+	return ret;
303	+	}
304	+	#endif
305	+
306	+
307	+	/*
308		*  Main program
309		*/
310
#	Line 325 | Line 322 | int main(int argc, char **argv)
322		char str[256];
323		uint32 *boot_globs;
324		int16 i16;
328	–	int drive, driver;
325		int rom_fd;
326		FILE *proc_file;
327		const char *rom_path;
#	Line 335 | Line 331 | int main(int argc, char **argv)
331
332		// Initialize variables
333		RAMBase = 0;
338	–	mmap_RAMBase = NULL;
334		tzset();
335
336		// Print some info
#	Line 464 | Line 459 | int main(int argc, char **argv)
459		}
460
461		// Create Low Memory area (0x0000..0x3000)
462	<	if (mmap((char *)0x0000, 0x3000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) == (void *)-1) {
462	>	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
463		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
464		ErrorAlert(str);
465		goto quit;
#	Line 488 | Line 483 | int main(int argc, char **argv)
483		ErrorAlert(str);
484		goto quit;
485		}
486	<	kernel_data = (KernelData *)0x68ffe000;
486	>	kernel_data = (KernelData *)KERNEL_DATA_BASE;
487		emulator_data = &kernel_data->ed;
488	<	KernelDataAddr = (uint32)kernel_data;
488	>	KernelDataAddr = KERNEL_DATA_BASE;
489		D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
490
491	+	// Create area for SheepShaver data
492	+	if (!SheepMem::Init()) {
493	+	sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
494	+	ErrorAlert(str);
495	+	goto quit;
496	+	}
497	+
498		// Create area for Mac ROM
499	<	if (mmap((char *)ROM_BASE, ROM_AREA_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) == (void *)-1) {
499	>	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
500		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
501		ErrorAlert(str);
502		goto quit;
503		}
504	+	#if !EMULATED_PPC || defined(__powerpc__)
505	+	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
506	+	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
507	+	ErrorAlert(str);
508	+	goto quit;
509	+	}
510	+	#endif
511		rom_area_mapped = true;
512		D(bug("ROM area at %08x\n", ROM_BASE));
513
#	Line 509 | Line 518 | int main(int argc, char **argv)
518		RAMSize = 8*1024*1024;
519		}
520
521	<	mmap_RAMBase = mmap((void *)0x20000000, RAMSize, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0);
522	<	if (mmap_RAMBase == (void *)-1) {
521	>	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
522	>	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
523	>	ErrorAlert(str);
524	>	goto quit;
525	>	}
526	>	#if !EMULATED_PPC
527	>	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
528		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
529		ErrorAlert(str);
530		goto quit;
531		}
532	<	RAMBase = (uint32)mmap_RAMBase;
532	>	#endif
533	>	RAMBase = RAM_BASE;
534		ram_area_mapped = true;
535		D(bug("RAM area at %08x\n", RAMBase));
536
#	Line 540 | Line 555 | int main(int argc, char **argv)
555		rom_tmp = new uint8[ROM_SIZE];
556		actual = read(rom_fd, (void *)rom_tmp, ROM_SIZE);
557		close(rom_fd);
558	<	if (actual == ROM_SIZE) {
559	<	// Plain ROM image
560	<	memcpy((void *)ROM_BASE, rom_tmp, ROM_SIZE);
561	<	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) {
558	>
559	>	// Decode Mac ROM
560	>	if (!DecodeROM(rom_tmp, actual)) {
561	>	if (rom_size != 4*1024*1024) {
562		ErrorAlert(GetString(STR_ROM_SIZE_ERR));
563		goto quit;
564		} else {
#	Line 584 | Line 566 | int main(int argc, char **argv)
566		goto quit;
567		}
568		}
569	+	delete[] rom_tmp;
570
571		// Load NVRAM
572		XPRAMInit();
573
574		// Set boot volume
575	<	drive = PrefsFindInt32("bootdrive");
575	>	i16 = PrefsFindInt32("bootdrive");
576		XPRAM[0x1378] = i16 >> 8;
577		XPRAM[0x1379] = i16 & 0xff;
578	<	driver = PrefsFindInt32("bootdriver");
578	>	i16 = PrefsFindInt32("bootdriver");
579		XPRAM[0x137a] = i16 >> 8;
580		XPRAM[0x137b] = i16 & 0xff;
581
#	Line 605 | Line 588 | int main(int argc, char **argv)
588		boot_globs[1] = htonl(RAMSize);
589		boot_globs[2] = htonl((uint32)-1);                      // End of bank table
590
591	+	// Init thunks
592	+	if (!ThunksInit())
593	+	goto quit;
594	+
595		// Init drivers
596		SonyInit();
597		DiskInit();
#	Line 643 | Line 630 | int main(int argc, char **argv)
630		#if !EMULATED_PPC
631		MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
632		#endif
633	<	mprotect((char *)ROM_BASE, ROM_AREA_SIZE, PROT_EXEC | PROT_READ);
633	>	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
634
635		// Initialize Kernel Data
636		memset(kernel_data, 0, sizeof(KernelData));
637		if (ROMType == ROMTYPE_NEWWORLD) {
638	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
639	<	static uint8 vector_lookup_tbl[128];
640	<	static uint8 vector_mask_tbl[64];
638	>	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
639	>	memset((void *)of_dev_tree, 0, 4 * sizeof(uint32));
640	>	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
641	>	uintptr vector_mask_tbl = SheepMem::Reserve(64);
642		memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
643	<	memset(vector_lookup_tbl, 0, 128);
644	<	memset(vector_mask_tbl, 0, 64);
643	>	memset((void *)vector_lookup_tbl, 0, 128);
644	>	memset((void *)vector_mask_tbl, 0, 64);
645		kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
646	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree);        // OF device tree base
647	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
648	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
646	>	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree);                        // OF device tree base
647	>	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
648	>	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
649		kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
650		kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
651		kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
#	Line 693 | Line 681 | int main(int argc, char **argv)
681		D(bug("Initializing Low Memory...\n"));
682		memset(NULL, 0, 0x3000);
683		WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
684	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data);                    // For trap replacement routines
684	>	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr);                                 // For trap replacement routines
685		WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
686		WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
687		WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
688	+	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage());                             // Pointer to read-only page with all bits set to 0
689		#if !EMULATED_PPC
690	<	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);
690	>	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                            // TOC pointer of emulator
691		#endif
692	+	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT));       // DLPI ethernet driver functions
693	+	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
694	+	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
695	+	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
696	+	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
697	+	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
698	+	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
699		D(bug("Low Memory initialized\n"));
700
701		// Start 60Hz thread
#	Line 767 | Line 756 | int main(int argc, char **argv)
756		ErrorAlert(str);
757		goto quit;
758		}
759	+	#endif
760
761		// Install interrupt signal handler
762		sigemptyset(&sigusr2_action.sa_mask);
763		sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
764	+	sigusr2_action.sa_flags = 0;
765	+	#if !EMULATED_PPC
766		sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
767	+	#endif
768		sigusr2_action.sa_restorer = NULL;
769		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
770		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
771		ErrorAlert(str);
772		goto quit;
773		}
781	–	#endif
774
775		// Get my thread ID and execute MacOS thread function
776		emul_thread = pthread_self();
#	Line 797 | Line 789 | quit:
789
790		static void Quit(void)
791		{
792	+	#if EMULATED_PPC
793	+	// Exit PowerPC emulation
794	+	exit_emul_ppc();
795	+	#endif
796	+
797		// Stop 60Hz thread
798		if (tick_thread_active) {
799		pthread_cancel(tick_thread);
#	Line 853 | Line 850 | static void Quit(void)
850		DiskExit();
851		SonyExit();
852
853	+	// Delete SheepShaver globals
854	+	SheepMem::Exit();
855	+
856		// Delete RAM area
857		if (ram_area_mapped)
858	<	munmap(mmap_RAMBase, RAMSize);
858	>	vm_release((char *)RAM_BASE, RAMSize);
859
860		// Delete ROM area
861		if (rom_area_mapped)
862	<	munmap((char *)ROM_BASE, ROM_AREA_SIZE);
862	>	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
863
864		// Delete Kernel Data area
865		if (kernel_area >= 0) {
#	Line 900 | Line 900 | static void Quit(void)
900		*/
901
902		#if EMULATED_PPC
903	–	extern void emul_ppc(uint32 start);
904	–	extern void init_emul_ppc(void);
903		void jump_to_rom(uint32 entry)
904		{
905		init_emul_ppc();
#	Line 970 | Line 968 | void Execute68kTrap(uint16 trap, M68kReg
968
969
970		/*
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	–	/*
971		*  Quit emulator (cause return from jump_to_rom)
972		*/
973
#	Line 1041 | Line 1026 | void Dump68kRegs(M68kRegisters *r)
1026
1027		void MakeExecutable(int dummy, void *start, uint32 length)
1028		{
1029	<	#if !EMULATED_PPC
1045	<	if (((uint32)start >= ROM_BASE) && ((uint32)start < (ROM_BASE + ROM_SIZE)))
1029	>	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1030		return;
1031	<	flush_icache_range(start, (void *)((uint32)start + length));
1031	>	#if EMULATED_PPC
1032	>	FlushCodeCache((uintptr)start, (uintptr)start + length);
1033	>	#else
1034	>	flush_icache_range(start, (void *)((uintptr)start + length));
1035		#endif
1036		}
1037
#	Line 1055 | Line 1042 | void MakeExecutable(int dummy, void *sta
1042
1043		void PatchAfterStartup(void)
1044		{
1045	<	ExecutePPC(VideoInstallAccel);
1045	>	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1046		InstallExtFS();
1047		}
1048
#	Line 1158 | Line 1145 | static void *tick_func(void *arg)
1145
1146		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1147		{
1148	<	// nothing to do
1148	>	#ifdef HAVE_PTHREADS
1149	>	pthread_attr_init(attr);
1150	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1151	>	// Some of these only work for superuser
1152	>	if (geteuid() == 0) {
1153	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1154	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1155	>	struct sched_param fifo_param;
1156	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1157	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1158	>	priority);
1159	>	pthread_attr_setschedparam(attr, &fifo_param);
1160	>	}
1161	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1162	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1163	>	// If system scope is not available (eg. we're not running
1164	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1165	>	// scope.  It exposes pthread scheduling to the kernel,
1166	>	// without setting realtime priority.
1167	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1168	>	#endif
1169	>	}
1170	>	#endif
1171	>	#endif
1172		}
1173
1174
#	Line 1166 | Line 1176 | void Set_pthread_attr(pthread_attr_t *at
1176		*  Mutexes
1177		*/
1178
1179	+	#ifdef HAVE_PTHREADS
1180	+
1181	+	struct B2_mutex {
1182	+	B2_mutex() {
1183	+	pthread_mutexattr_t attr;
1184	+	pthread_mutexattr_init(&attr);
1185	+	// Initialize the mutex for priority inheritance --
1186	+	// required for accurate timing.
1187	+	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1188	+	pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1189	+	#endif
1190	+	#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
1191	+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
1192	+	#endif
1193	+	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPSHARED
1194	+	pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_PRIVATE);
1195	+	#endif
1196	+	pthread_mutex_init(&m, &attr);
1197	+	pthread_mutexattr_destroy(&attr);
1198	+	}
1199	+	~B2_mutex() {
1200	+	pthread_mutex_trylock(&m); // Make sure it's locked before
1201	+	pthread_mutex_unlock(&m);  // unlocking it.
1202	+	pthread_mutex_destroy(&m);
1203	+	}
1204	+	pthread_mutex_t m;
1205	+	};
1206	+
1207	+	B2_mutex *B2_create_mutex(void)
1208	+	{
1209	+	return new B2_mutex;
1210	+	}
1211	+
1212	+	void B2_lock_mutex(B2_mutex *mutex)
1213	+	{
1214	+	pthread_mutex_lock(&mutex->m);
1215	+	}
1216	+
1217	+	void B2_unlock_mutex(B2_mutex *mutex)
1218	+	{
1219	+	pthread_mutex_unlock(&mutex->m);
1220	+	}
1221	+
1222	+	void B2_delete_mutex(B2_mutex *mutex)
1223	+	{
1224	+	delete mutex;
1225	+	}
1226	+
1227	+	#else
1228	+
1229		struct B2_mutex {
1230		int dummy;
1231		};
#	Line 1188 | Line 1248 | void B2_delete_mutex(B2_mutex *mutex)
1248		delete mutex;
1249		}
1250
1251	+	#endif
1252	+
1253
1254		/*
1255		*  Trigger signal USR2 from another thread
1256		*/
1257
1258	+	#if !EMULATED_PPC || ASYNC_IRQ
1259		void TriggerInterrupt(void)
1260		{
1198	–	#if EMULATED_PPC
1199	–	WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1200	–	#else
1201	–	#if 0
1202	–	WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1203	–	#else
1261		if (ready_for_signals)
1262		pthread_kill(emul_thread, SIGUSR2);
1206	–	#endif
1207	–	#endif
1263		}
1264	+	#endif
1265
1266
1267		/*
#	Line 1245 | Line 1301 | void EnableInterrupt(void)
1301		}
1302
1303
1248	–	#if !EMULATED_PPC
1304		/*
1305		*  USR2 handler
1306		*/
1307
1308	+	#if EMULATED_PPC
1309	+	static void sigusr2_handler(int sig)
1310	+	{
1311	+	#if ASYNC_IRQ
1312	+	extern void HandleInterrupt(void);
1313	+	HandleInterrupt();
1314	+	#endif
1315	+	}
1316	+	#else
1317		static void sigusr2_handler(int sig, sigcontext_struct *sc)
1318		{
1319		pt_regs *r = sc->regs;
#	Line 1319 | Line 1383 | static void sigusr2_handler(int sig, sig
1383		if (InterruptFlags & INTFLAG_VIA) {
1384		ClearInterruptFlag(INTFLAG_VIA);
1385		ADBInterrupt();
1386	<	ExecutePPC(VideoVBL);
1386	>	ExecuteNative(NATIVE_VIDEO_VBL);
1387		}
1388		}
1389		#endif
#	Line 1331 | Line 1395 | static void sigusr2_handler(int sig, sig
1395		}
1396		break;
1397		#endif
1334	–
1398		}
1399		}
1400	+	#endif
1401
1402
1403		/*
1404		*  SIGSEGV handler
1405		*/
1406
1407	+	#if !EMULATED_PPC
1408		static void sigsegv_handler(int sig, sigcontext_struct *sc)
1409		{
1410		pt_regs *r = sc->regs;
1411	+
1412	+	// Get effective address
1413	+	uint32 addr = r->dar;
1414	+
1415	+	#if ENABLE_VOSF
1416	+	// Handle screen fault.
1417	+	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1418	+	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1419	+	return;
1420	+	#endif
1421	+
1422		num_segv++;
1423
1424		// Fault in Mac ROM or RAM?
1425		bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1426		if (mac_fault) {
1427
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	–
1428		// "VM settings" during MacOS 8 installation
1429		if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1430		r->nip += 4;
#	Line 1385 | Line 1452 | static void sigsegv_handler(int sig, sig
1452		return;
1453		}
1454
1455	+	// Get opcode and divide into fields
1456	+	uint32 opcode = *((uint32 *)r->nip);
1457	+	uint32 primop = opcode >> 26;
1458	+	uint32 exop = (opcode >> 1) & 0x3ff;
1459	+	uint32 ra = (opcode >> 16) & 0x1f;
1460	+	uint32 rb = (opcode >> 11) & 0x1f;
1461	+	uint32 rd = (opcode >> 21) & 0x1f;
1462	+	int32 imm = (int16)(opcode & 0xffff);
1463	+
1464		// Analyze opcode
1465		enum {
1466		TYPE_UNKNOWN,
#	Line 1468 | Line 1544 | static void sigsegv_handler(int sig, sig
1544		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1545		}
1546
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	–
1547		// Ignore ROM writes
1548		if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1549		//                      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 1780 | rti:;
1780
1781
1782		/*
1783	+	*  Helpers to share 32-bit addressable data with MacOS
1784	+	*/
1785	+
1786	+	bool SheepMem::Init(void)
1787	+	{
1788	+	const int page_size = getpagesize();
1789	+
1790	+	// Allocate SheepShaver globals
1791	+	if (vm_acquire_fixed((char *)base, size) < 0)
1792	+	return false;
1793	+
1794	+	// Allocate page with all bits set to 0
1795	+	zero_page = base + size;
1796	+	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
1797	+	return false;
1798	+	memset((char *)zero_page, 0, page_size);
1799	+	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
1800	+	return false;
1801	+
1802	+	#if EMULATED_PPC
1803	+	// Allocate alternate stack for PowerPC interrupt routine
1804	+	sig_stack = zero_page + page_size;
1805	+	if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0)
1806	+	return false;
1807	+	#endif
1808	+
1809	+	top = base + size;
1810	+	return true;
1811	+	}
1812	+
1813	+	void SheepMem::Exit(void)
1814	+	{
1815	+	if (top) {
1816	+	const int page_size = getpagesize();
1817	+
1818	+	// Delete SheepShaver globals
1819	+	vm_release((void *)base, size);
1820	+
1821	+	// Delete zero page
1822	+	vm_release((void *)zero_page, page_size);
1823	+
1824	+	#if EMULATED_PPC
1825	+	// Delete alternate stack for PowerPC interrupt routine
1826	+	vm_release((void *)sig_stack, SIG_STACK_SIZE);
1827	+	#endif
1828	+	}
1829	+	}
1830	+
1831	+
1832	+	/*
1833		*  Display alert
1834		*/
1835

Diff Legend

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