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

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.27 by gbeauche, 2004-01-18T22:22:28Z vs.
Revision 1.98 by asvitkine, 2011-12-30T17:38:39Z

#	Line 1 | Line 1
1		/*
2		*  main_unix.cpp - Emulation core, Unix implementation
3		*
4	<	*  SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig
4	>	*  SheepShaver (C) Christian Bauer and Marc Hellwig
5		*
6		*  This program is free software; you can redistribute it and/or modify
7		*  it under the terms of the GNU General Public License as published by
#	Line 27 | Line 27
27		*  is slightly different from the SysV ABI used by Linux:
28		*    - Stack frames are different (e.g. LR is stored in 8(r1) under
29		*      MacOS, but in 4(r1) under Linux)
30	<	*    - There is no TOC under Linux; r2 is free for the user
30	>	*    - There is a pointer to Thread Local Storage (TLS) under Linux with
31	>	*      recent enough glibc. This is r2 in 32-bit mode and r13 in
32	>	*      64-bit mode (PowerOpen/AIX ABI)
33		*    - r13 is used as a small data pointer under Linux (but appearently
34		*      it is not used this way? To be sure, we specify -msdata=none
35		*      in the Makefile)
36	<	*    - As there is no TOC, there are also no TVECTs under Linux;
37	<	*      function pointers point directly to the function code
36	>	*    - There are no TVECTs under Linux; function pointers point
37	>	*      directly to the function code
38		*  The Execute*() functions have to account for this. Additionally, we
39		*  cannot simply call MacOS functions by getting their TVECT and jumping
40		*  to it. Such calls are done via the call_macos*() functions in
#	Line 65 | Line 67
67		*  ExecutePPC (or any function that might cause a mode switch). The signal
68		*  stack is restored before exiting the SIGUSR2 handler.
69		*
70	+	*  Note that POSIX standard says you can't modify the alternate
71	+	*  signal stack while the process is executing on it. There is a
72	+	*  hackaround though: we install a trampoline SIGUSR2 handler that
73	+	*  sets up an alternate stack itself and calls the real handler.
74	+	*  Then, when we call sigaltstack() there, we no longer get an EPERM,
75	+	*  i.e. it now works.
76	+	*
77		*  TODO:
78		*    check if SIGSEGV handler works for all registers (including FP!)
79		*/
#	Line 80 | Line 89
89		#include <sys/mman.h>
90		#include <sys/ipc.h>
91		#include <sys/shm.h>
92	+	#include <sys/stat.h>
93		#include <signal.h>
94
95		#include "sysdeps.h"
#	Line 93 | Line 103
103		#include "xpram.h"
104		#include "timer.h"
105		#include "adb.h"
96	–	#include "sony.h"
97	–	#include "disk.h"
98	–	#include "cdrom.h"
99	–	#include "scsi.h"
106		#include "video.h"
101	–	#include "audio.h"
102	–	#include "ether.h"
103	–	#include "serial.h"
104	–	#include "clip.h"
105	–	#include "extfs.h"
107		#include "sys.h"
108		#include "macos_util.h"
109		#include "rom_patches.h"
110		#include "user_strings.h"
111		#include "vm_alloc.h"
112		#include "sigsegv.h"
113	<	#include "thunks.h"
113	>	#include "sigregs.h"
114	>	#include "rpc.h"
115
116		#define DEBUG 0
117		#include "debug.h"
118
119
120	+	#ifdef HAVE_DIRENT_H
121	+	#include <dirent.h>
122	+	#endif
123	+
124	+	#ifdef USE_SDL
125	+	#include <SDL.h>
126	+	#endif
127	+
128	+	#ifndef USE_SDL_VIDEO
129		#include <X11/Xlib.h>
130	+	#endif
131
132		#ifdef ENABLE_GTK
133		#include <gtk/gtk.h>
#	Line 124 | Line 136
136		#ifdef ENABLE_XF86_DGA
137		#include <X11/Xlib.h>
138		#include <X11/Xutil.h>
139	<	#include <X11/extensions/xf86dga.h>
139	>	#include <X11/extensions/Xxf86dga.h>
140		#endif
141
142		#ifdef ENABLE_MON
#	Line 149 | Line 161
161		const char ROM_FILE_NAME[] = "ROM";
162		const char ROM_FILE_NAME2[] = "Mac OS ROM";
163
164	<	const uintptr RAM_BASE = 0x20000000;            // Base address of RAM
165	<	const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
166	<
167	<
168	<	#if !EMULATED_PPC
169	<	struct sigregs {
170	<	uint32 nip;
159	<	uint32 link;
160	<	uint32 ctr;
161	<	uint32 msr;
162	<	uint32 xer;
163	<	uint32 ccr;
164	<	uint32 gpr[32];
165	<	};
166	<
167	<	#if defined(__linux__)
168	<	struct machine_regs : public pt_regs
169	<	{
170	<	u_long & cr()                           { return pt_regs::ccr; }
171	<	uint32 cr() const                       { return pt_regs::ccr; }
172	<	uint32 lr() const                       { return pt_regs::link; }
173	<	uint32 ctr() const                      { return pt_regs::ctr; }
174	<	uint32 xer() const                      { return pt_regs::xer; }
175	<	uint32 msr() const                      { return pt_regs::msr; }
176	<	uint32 dar() const                      { return pt_regs::dar; }
177	<	u_long & pc()                           { return pt_regs::nip; }
178	<	uint32 pc() const                       { return pt_regs::nip; }
179	<	u_long & gpr(int i)                     { return pt_regs::gpr[i]; }
180	<	uint32 gpr(int i) const         { return pt_regs::gpr[i]; }
181	<	};
182	<
183	<	#include <sys/ucontext.h>
184	<	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext.regs))
185	<	#endif
186	<
187	<	#if defined(__APPLE__) && defined(__MACH__)
188	<	struct machine_regs : public mcontext
189	<	{
190	<	uint32 & cr()                           { return ss.cr; }
191	<	uint32 cr() const                       { return ss.cr; }
192	<	uint32 lr() const                       { return ss.lr; }
193	<	uint32 ctr() const                      { return ss.ctr; }
194	<	uint32 xer() const                      { return ss.xer; }
195	<	uint32 msr() const                      { return ss.srr1; }
196	<	uint32 dar() const                      { return es.dar; }
197	<	uint32 & pc()                           { return ss.srr0; }
198	<	uint32 pc() const                       { return ss.srr0; }
199	<	uint32 & gpr(int i)                     { return (&ss.r0)[i]; }
200	<	uint32 gpr(int i) const         { return (&ss.r0)[i]; }
201	<	};
202	<
203	<	#include <sys/ucontext.h>
204	<	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext))
205	<
206	<	#include <sys/signal.h>
207	<	extern "C" int sigaltstack(const struct sigaltstack *ss, struct sigaltstack *oss);
208	<	#endif
209	<
210	<	static void build_sigregs(sigregs *srp, machine_regs *mrp)
211	<	{
212	<	srp->nip = mrp->pc();
213	<	srp->link = mrp->lr();
214	<	srp->ctr = mrp->ctr();
215	<	srp->msr = mrp->msr();
216	<	srp->xer = mrp->xer();
217	<	srp->ccr = mrp->cr();
218	<	for (int i = 0; i < 32; i++)
219	<	srp->gpr[i] = mrp->gpr(i);
220	<	}
164	>	#if !REAL_ADDRESSING
165	>	// FIXME: needs to be >= 0x04000000
166	>	const uintptr RAM_BASE = 0x10000000;            // Base address of RAM
167	>	#endif
168	>	const uintptr ROM_BASE = 0x40800000;            // Base address of ROM
169	>	#if REAL_ADDRESSING
170	>	const uint32 ROM_ALIGNMENT = 0x100000;          // ROM must be aligned to a 1MB boundary
171		#endif
172	+	const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
173
174
175		// Global variables (exported)
176		#if !EMULATED_PPC
177	<	void *TOC;                              // Small data pointer (r13)
177	>	void *TOC = NULL;               // Pointer to Thread Local Storage (r2)
178	>	void *R13 = NULL;               // Pointer to .sdata section (r13 under Linux)
179		#endif
180		uint32 RAMBase;                 // Base address of Mac RAM
181		uint32 RAMSize;                 // Size of Mac RAM
182	+	uint32 ROMBase;                 // Base address of Mac ROM
183		uint32 KernelDataAddr;  // Address of Kernel Data
184		uint32 BootGlobsAddr;   // Address of BootGlobs structure at top of Mac RAM
185	+	uint32 DRCacheAddr;             // Address of DR Cache
186		uint32 PVR;                             // Theoretical PVR
187		int64 CPUClockSpeed;    // Processor clock speed (Hz)
188		int64 BusClockSpeed;    // Bus clock speed (Hz)
189	+	int64 TimebaseSpeed;    // Timebase clock speed (Hz)
190	+	uint8 *RAMBaseHost;             // Base address of Mac RAM (host address space)
191	+	uint8 *ROMBaseHost;             // Base address of Mac ROM (host address space)
192
193
194		// Global variables
195	+	#ifndef USE_SDL_VIDEO
196		char *x_display_name = NULL;                            // X11 display name
197		Display *x_display = NULL;                                      // X11 display handle
198		#ifdef X11_LOCK_TYPE
199		X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
200		#endif
201	+	#endif
202
203		static int zero_fd = 0;                                         // FD of /dev/zero
204		static bool lm_area_mapped = false;                     // Flag: Low Memory area mmap()ped
205		static int kernel_area = -1;                            // SHM ID of Kernel Data area
206		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
207		static bool ram_area_mapped = false;            // Flag: Mac RAM mmap()ped
208	+	static bool dr_cache_area_mapped = false;       // Flag: Mac DR Cache mmap()ped
209	+	static bool dr_emulator_area_mapped = false;// Flag: Mac DR Emulator mmap()ped
210		static KernelData *kernel_data;                         // Pointer to Kernel Data
211		static EmulatorData *emulator_data;
212
213		static uint8 last_xpram[XPRAM_SIZE];            // Buffer for monitoring XPRAM changes
214
215		static bool nvram_thread_active = false;        // Flag: NVRAM watchdog installed
216	+	static volatile bool nvram_thread_cancel;       // Flag: Cancel NVRAM thread
217		static pthread_t nvram_thread;                          // NVRAM watchdog
218		static bool tick_thread_active = false;         // Flag: MacOS thread installed
219	+	static volatile bool tick_thread_cancel;        // Flag: Cancel 60Hz thread
220		static pthread_t tick_thread;                           // 60Hz thread
221		static pthread_t emul_thread;                           // MacOS thread
222
#	Line 266 | Line 229 | static uintptr sig_stack = 0;                          // Stac
229		#else
230		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
231		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
232	<	static void *sig_stack = NULL;                          // Stack for signal handlers
233	<	static void *extra_stack = NULL;                        // Stack for SIGSEGV inside interrupt handler
232	>	static stack_t sig_stack;                                       // Stack for signal handlers
233	>	static stack_t extra_stack;                                     // Stack for SIGSEGV inside interrupt handler
234		static bool emul_thread_fatal = false;          // Flag: MacOS thread crashed, tick thread shall dump debug output
235		static sigregs sigsegv_regs;                            // Register dump when crashed
236		static const char *crash_reason = NULL;         // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
237		#endif
238
239	+	static rpc_connection_t *gui_connection = NULL; // RPC connection to the GUI
240	+	static const char *gui_connection_path = NULL;  // GUI connection identifier
241	+
242	+	uint32  SheepMem::page_size;                            // Size of a native page
243		uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
244		uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
245	<	uintptr SheepMem::top = 0;                                      // Top of SheepShaver data (stack like storage)
245	>	uintptr SheepMem::proc;                                         // Bottom address of SheepShave procedures
246	>	uintptr SheepMem::data;                                         // Top of SheepShaver data (stack like storage)
247
248
249		// Prototypes
250	+	static bool kernel_data_init(void);
251	+	static void kernel_data_exit(void);
252		static void Quit(void);
253		static void *emul_func(void *arg);
254		static void *nvram_func(void *arg);
255		static void *tick_func(void *arg);
256		#if EMULATED_PPC
287	–	static void sigusr2_handler(int sig);
257		extern void emul_ppc(uint32 start);
258		extern void init_emul_ppc(void);
259		extern void exit_emul_ppc(void);
260	+	sigsegv_return_t sigsegv_handler(sigsegv_info_t *sip);
261		#else
262	<	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
262	>	extern "C" void sigusr2_handler_init(int sig, siginfo_t *sip, void *scp);
263	>	extern "C" void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
264		static void sigsegv_handler(int sig, siginfo_t *sip, void *scp);
265		static void sigill_handler(int sig, siginfo_t *sip, void *scp);
266		#endif
#	Line 297 | Line 268 | static void sigill_handler(int sig, sigi
268
269		// From asm_linux.S
270		#if !EMULATED_PPC
300	–	extern "C" void *get_toc(void);
271		extern "C" void *get_sp(void);
272	<	extern "C" void flush_icache_range(void *start, void *end);
272	>	extern "C" void *get_r2(void);
273	>	extern "C" void set_r2(void *);
274	>	extern "C" void *get_r13(void);
275	>	extern "C" void set_r13(void *);
276	>	extern "C" void flush_icache_range(uint32 start, uint32 end);
277		extern "C" void jump_to_rom(uint32 entry, uint32 context);
278		extern "C" void quit_emulator(void);
279		extern "C" void execute_68k(uint32 pc, M68kRegisters *r);
#	Line 363 | Line 337 | int atomic_or(int *var, int v)
337
338
339		/*
340	+	*  Memory management helpers
341	+	*/
342	+
343	+	static inline uint8 *vm_mac_acquire(uint32 size)
344	+	{
345	+	return (uint8 *)vm_acquire(size);
346	+	}
347	+
348	+	static inline int vm_mac_acquire_fixed(uint32 addr, uint32 size)
349	+	{
350	+	return vm_acquire_fixed(Mac2HostAddr(addr), size);
351	+	}
352	+
353	+	static inline int vm_mac_release(uint32 addr, uint32 size)
354	+	{
355	+	return vm_release(Mac2HostAddr(addr), size);
356	+	}
357	+
358	+
359	+	/*
360		*  Main program
361		*/
362
#	Line 375 | Line 369 | static void usage(const char *prg_name)
369		exit(0);
370		}
371
372	<	int main(int argc, char **argv)
372	>	static bool valid_vmdir(const char *path)
373		{
374	<	char str[256];
375	<	uint32 *boot_globs;
376	<	int16 i16;
377	<	int rom_fd;
374	>	const int suffix_len = sizeof(".sheepvm") - 1;
375	>	int len = strlen(path);
376	>	if (len && path[len - 1] == '/') // to support both ".sheepvm" and ".sheepvm/"
377	>	len--;
378	>	if (len > suffix_len && !strncmp(path + len - suffix_len, ".sheepvm", suffix_len)) {
379	>	struct stat d;
380	>	if (!stat(path, &d) && S_ISDIR(d.st_mode)) {
381	>	return true;
382	>	}
383	>	}
384	>	return false;
385	>	}
386	>
387	>	static void get_system_info(void)
388	>	{
389	>	#if !EMULATED_PPC
390		FILE *proc_file;
391	<	const char *rom_path;
391	>	#endif
392	>
393	>	PVR = 0x00040000;                       // Default: 604
394	>	CPUClockSpeed = 100000000;      // Default: 100MHz
395	>	BusClockSpeed = 100000000;      // Default: 100MHz
396	>	TimebaseSpeed =  25000000;      // Default:  25MHz
397	>
398	>	#if EMULATED_PPC
399	>	PVR = 0x000c0000;                       // Default: 7400 (with AltiVec)
400	>	#elif defined(__APPLE__) && defined(__MACH__)
401	>	proc_file = popen("ioreg -c IOPlatformDevice", "r");
402	>	if (proc_file) {
403	>	char line[256];
404	>	bool powerpc_node = false;
405	>	while (fgets(line, sizeof(line) - 1, proc_file)) {
406	>	// Read line
407	>	int len = strlen(line);
408	>	if (len == 0)
409	>	continue;
410	>	line[len - 1] = 0;
411	>
412	>	// Parse line
413	>	if (strstr(line, "o PowerPC,"))
414	>	powerpc_node = true;
415	>	else if (powerpc_node) {
416	>	uint32 value;
417	>	char head[256];
418	>	if (sscanf(line, "%[ |]\"cpu-version\" = <%x>", head, &value) == 2)
419	>	PVR = value;
420	>	else if (sscanf(line, "%[ |]\"clock-frequency\" = <%x>", head, &value) == 2)
421	>	CPUClockSpeed = value;
422	>	else if (sscanf(line, "%[ |]\"bus-frequency\" = <%x>", head, &value) == 2)
423	>	BusClockSpeed = value;
424	>	else if (sscanf(line, "%[ |]\"timebase-frequency\" = <%x>", head, &value) == 2)
425	>	TimebaseSpeed = value;
426	>	else if (strchr(line, '}'))
427	>	powerpc_node = false;
428	>	}
429	>	}
430	>	fclose(proc_file);
431	>	} else {
432	>	char str[256];
433	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
434	>	WarningAlert(str);
435	>	}
436	>	#else
437	>	proc_file = fopen("/proc/cpuinfo", "r");
438	>	if (proc_file) {
439	>	// CPU specs from Linux kernel
440	>	// TODO: make it more generic with features (e.g. AltiVec) and
441	>	// cache information and friends for NameRegistry
442	>	static const struct {
443	>	uint32 pvr_mask;
444	>	uint32 pvr_value;
445	>	const char *cpu_name;
446	>	}
447	>	cpu_specs[] = {
448	>	{ 0xffff0000, 0x00010000, "601" },
449	>	{ 0xffff0000, 0x00030000, "603" },
450	>	{ 0xffff0000, 0x00060000, "603e" },
451	>	{ 0xffff0000, 0x00070000, "603ev" },
452	>	{ 0xffff0000, 0x00040000, "604" },
453	>	{ 0xfffff000, 0x00090000, "604e" },
454	>	{ 0xffff0000, 0x00090000, "604r" },
455	>	{ 0xffff0000, 0x000a0000, "604ev" },
456	>	{ 0xffffffff, 0x00084202, "740/750" },
457	>	{ 0xfffff000, 0x00083000, "745/755" },
458	>	{ 0xfffffff0, 0x00080100, "750CX" },
459	>	{ 0xfffffff0, 0x00082200, "750CX" },
460	>	{ 0xfffffff0, 0x00082210, "750CXe" },
461	>	{ 0xffffff00, 0x70000100, "750FX" },
462	>	{ 0xffffffff, 0x70000200, "750FX" },
463	>	{ 0xffff0000, 0x70000000, "750FX" },
464	>	{ 0xffff0000, 0x70020000, "750GX" },
465	>	{ 0xffff0000, 0x00080000, "740/750" },
466	>	{ 0xffffffff, 0x000c1101, "7400 (1.1)" },
467	>	{ 0xffff0000, 0x000c0000, "7400" },
468	>	{ 0xffff0000, 0x800c0000, "7410" },
469	>	{ 0xffffffff, 0x80000200, "7450" },
470	>	{ 0xffffffff, 0x80000201, "7450" },
471	>	{ 0xffff0000, 0x80000000, "7450" },
472	>	{ 0xffffff00, 0x80010100, "7455" },
473	>	{ 0xffffffff, 0x80010200, "7455" },
474	>	{ 0xffff0000, 0x80010000, "7455" },
475	>	{ 0xffff0000, 0x80020000, "7457" },
476	>	{ 0xffff0000, 0x80030000, "7447A" },
477	>	{ 0xffff0000, 0x80040000, "7448" },
478	>	{ 0x7fff0000, 0x00810000, "82xx" },
479	>	{ 0x7fff0000, 0x00820000, "8280" },
480	>	{ 0xffff0000, 0x00400000, "Power3 (630)" },
481	>	{ 0xffff0000, 0x00410000, "Power3 (630+)" },
482	>	{ 0xffff0000, 0x00360000, "I-star" },
483	>	{ 0xffff0000, 0x00370000, "S-star" },
484	>	{ 0xffff0000, 0x00350000, "Power4" },
485	>	{ 0xffff0000, 0x00390000, "PPC970" },
486	>	{ 0xffff0000, 0x003c0000, "PPC970FX" },
487	>	{ 0xffff0000, 0x00440000, "PPC970MP" },
488	>	{ 0xffff0000, 0x003a0000, "POWER5 (gr)" },
489	>	{ 0xffff0000, 0x003b0000, "POWER5+ (gs)" },
490	>	{ 0xffff0000, 0x003e0000, "POWER6" },
491	>	{ 0xffff0000, 0x00700000, "Cell Broadband Engine" },
492	>	{ 0x7fff0000, 0x00900000, "PA6T" },
493	>	{ 0, 0, 0 }
494	>	};
495	>
496	>	char line[256];
497	>	while(fgets(line, 255, proc_file)) {
498	>	// Read line
499	>	int len = strlen(line);
500	>	if (len == 0)
501	>	continue;
502	>	line[len-1] = 0;
503	>
504	>	// Parse line
505	>	int i;
506	>	float f;
507	>	char value[256];
508	>	if (sscanf(line, "cpu : %[^,]", value) == 1) {
509	>	// Search by name
510	>	const char *cpu_name = NULL;
511	>	for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
512	>	if (strcmp(cpu_specs[i].cpu_name, value) == 0) {
513	>	cpu_name = cpu_specs[i].cpu_name;
514	>	PVR = cpu_specs[i].pvr_value;
515	>	break;
516	>	}
517	>	}
518	>	if (cpu_name == NULL)
519	>	printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
520	>	else
521	>	printf("Found a PowerPC %s processor\n", cpu_name);
522	>	}
523	>	if (sscanf(line, "clock : %fMHz", &f) == 1)
524	>	CPUClockSpeed = BusClockSpeed = ((int64)f) * 1000000;
525	>	else if (sscanf(line, "clock : %dMHz", &i) == 1)
526	>	CPUClockSpeed = BusClockSpeed = i * 1000000;
527	>	}
528	>	fclose(proc_file);
529	>	} else {
530	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
531	>	WarningAlert(str);
532	>	}
533	>
534	>	// Get actual bus frequency
535	>	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
536	>	if (proc_file) {
537	>	union { uint8 b[4]; uint32 l; } value;
538	>	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
539	>	BusClockSpeed = value.l;
540	>	fclose(proc_file);
541	>	}
542	>
543	>	// Get actual timebase frequency
544	>	TimebaseSpeed = BusClockSpeed / 4;
545	>	DIR *cpus_dir;
546	>	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
547	>	struct dirent *cpu_entry;
548	>	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
549	>	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
550	>	char timebase_freq_node[256];
551	>	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
552	>	proc_file = fopen(timebase_freq_node, "r");
553	>	if (proc_file) {
554	>	union { uint8 b[4]; uint32 l; } value;
555	>	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
556	>	TimebaseSpeed = value.l;
557	>	fclose(proc_file);
558	>	}
559	>	}
560	>	}
561	>	closedir(cpus_dir);
562	>	}
563	>	#endif
564	>
565	>	// Remap any newer G4/G5 processor to plain G4 for compatibility
566	>	switch (PVR >> 16) {
567	>	case 0x8000:                            // 7450
568	>	case 0x8001:                            // 7455
569	>	case 0x8002:                            // 7457
570	>	case 0x8003:                            // 7447A
571	>	case 0x8004:                            // 7448
572	>	case 0x0039:                            //  970
573	>	case 0x003c:                            //  970FX
574	>	case 0x0044:                            //  970MP
575	>	PVR = 0x000c0000;               // 7400
576	>	break;
577	>	}
578	>	D(bug("PVR: %08x (assumed)\n", PVR));
579	>	}
580	>
581	>	static bool load_mac_rom(void)
582	>	{
583		uint32 rom_size, actual;
584		uint8 *rom_tmp;
585	<	time_t now, expire;
585	>	const char *rom_path = PrefsFindString("rom");
586	>	int rom_fd = open(rom_path && *rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
587	>	if (rom_fd < 0) {
588	>	rom_fd = open(ROM_FILE_NAME2, O_RDONLY);
589	>	if (rom_fd < 0) {
590	>	ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
591	>	return false;
592	>	}
593	>	}
594	>	printf("%s", GetString(STR_READING_ROM_FILE));
595	>	rom_size = lseek(rom_fd, 0, SEEK_END);
596	>	lseek(rom_fd, 0, SEEK_SET);
597	>	rom_tmp = new uint8[ROM_SIZE];
598	>	actual = read(rom_fd, (void *)rom_tmp, ROM_SIZE);
599	>	close(rom_fd);
600	>
601	>	// Decode Mac ROM
602	>	if (!DecodeROM(rom_tmp, actual)) {
603	>	if (rom_size != 4*1024*1024) {
604	>	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
605	>	return false;
606	>	} else {
607	>	ErrorAlert(GetString(STR_ROM_FILE_READ_ERR));
608	>	return false;
609	>	}
610	>	}
611	>	delete[] rom_tmp;
612	>	return true;
613	>	}
614	>
615	>	static bool install_signal_handlers(void)
616	>	{
617	>	char str[256];
618	>	#if !EMULATED_PPC
619	>	// Create and install stacks for signal handlers
620	>	sig_stack.ss_sp = malloc(SIG_STACK_SIZE);
621	>	D(bug("Signal stack at %p\n", sig_stack.ss_sp));
622	>	if (sig_stack.ss_sp == NULL) {
623	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
624	>	return false;
625	>	}
626	>	sig_stack.ss_flags = 0;
627	>	sig_stack.ss_size = SIG_STACK_SIZE;
628	>	if (sigaltstack(&sig_stack, NULL) < 0) {
629	>	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
630	>	ErrorAlert(str);
631	>	return false;
632	>	}
633	>	extra_stack.ss_sp = malloc(SIG_STACK_SIZE);
634	>	D(bug("Extra stack at %p\n", extra_stack.ss_sp));
635	>	if (extra_stack.ss_sp == NULL) {
636	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
637	>	return false;
638	>	}
639	>	extra_stack.ss_flags = 0;
640	>	extra_stack.ss_size = SIG_STACK_SIZE;
641	>
642	>	// Install SIGSEGV and SIGBUS handlers
643	>	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
644	>	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
645	>	sigsegv_action.sa_sigaction = sigsegv_handler;
646	>	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
647	>	#ifdef HAVE_SIGNAL_SA_RESTORER
648	>	sigsegv_action.sa_restorer = NULL;
649	>	#endif
650	>	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
651	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
652	>	ErrorAlert(str);
653	>	return false;
654	>	}
655	>	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
656	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGBUS", strerror(errno));
657	>	ErrorAlert(str);
658	>	return false;
659	>	}
660	>	#else
661	>	// Install SIGSEGV handler for CPU emulator
662	>	if (!sigsegv_install_handler(sigsegv_handler)) {
663	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
664	>	ErrorAlert(str);
665	>	return false;
666	>	}
667	>	#endif
668	>	return true;
669	>	}
670	>
671	>	static bool init_sdl()
672	>	{
673	>	int sdl_flags = 0;
674	>	#ifdef USE_SDL_VIDEO
675	>	sdl_flags |= SDL_INIT_VIDEO;
676	>	#endif
677	>	#ifdef USE_SDL_AUDIO
678	>	sdl_flags |= SDL_INIT_AUDIO;
679	>	#endif
680	>	assert(sdl_flags != 0);
681	>
682	>	#ifdef USE_SDL_VIDEO
683	>	// Don't let SDL block the screensaver
684	>	setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", TRUE);
685	>
686	>	// Make SDL pass through command-clicks and option-clicks unaltered
687	>	setenv("SDL_HAS3BUTTONMOUSE", "1", TRUE);
688	>	#endif
689	>
690	>	if (SDL_Init(sdl_flags) == -1) {
691	>	char str[256];
692	>	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
693	>	ErrorAlert(str);
694	>	return false;
695	>	}
696	>	atexit(SDL_Quit);
697	>
698	>	// Don't let SDL catch SIGINT and SIGTERM signals
699	>	signal(SIGINT, SIG_DFL);
700	>	signal(SIGTERM, SIG_DFL);
701	>	return true;
702	>	}
703	>
704	>	int main(int argc, char **argv)
705	>	{
706	>	char str[256];
707	>	bool memory_mapped_from_zero, ram_rom_areas_contiguous;
708	>	const char *vmdir = NULL;
709
710		// Initialize variables
711		RAMBase = 0;
#	Line 396 | Line 716 | int main(int argc, char **argv)
716		printf(" %s\n", GetString(STR_ABOUT_TEXT2));
717
718		#if !EMULATED_PPC
719	+	#ifdef SYSTEM_CLOBBERS_R2
720		// Get TOC pointer
721	<	TOC = get_toc();
721	>	TOC = get_r2();
722	>	#endif
723	>	#ifdef SYSTEM_CLOBBERS_R13
724	>	// Get r13 register
725	>	R13 = get_r13();
726		#endif
402	–
403	–	#ifdef ENABLE_GTK
404	–	// Init GTK
405	–	gtk_set_locale();
406	–	gtk_init(&argc, &argv);
727		#endif
408	–
409	–	// Read preferences
410	–	PrefsInit(argc, argv);
728
729		// Parse command line arguments
730		for (int i=1; i<argc; i++) {
731		if (strcmp(argv[i], "--help") == 0) {
732		usage(argv[0]);
733	+	#ifndef USE_SDL_VIDEO
734		} else if (strcmp(argv[i], "--display") == 0) {
735		i++;
736		if (i < argc)
737		x_display_name = strdup(argv[i]);
738	<	} else if (argv[i][0] == '-') {
738	>	#endif
739	>	} else if (strcmp(argv[i], "--gui-connection") == 0) {
740	>	argv[i++] = NULL;
741	>	if (i < argc) {
742	>	gui_connection_path = argv[i];
743	>	argv[i] = NULL;
744	>	}
745	>	} else if (valid_vmdir(argv[i])) {
746	>	vmdir = argv[i];
747	>	argv[i] = NULL;
748	>	printf("Using %s as vmdir.\n", vmdir);
749	>	if (chdir(vmdir)) {
750	>	printf("Failed to chdir to %s. Good bye.", vmdir);
751	>	exit(1);
752	>	}
753	>	break;
754	>	}
755	>	}
756	>
757	>	// Remove processed arguments
758	>	for (int i=1; i<argc; i++) {
759	>	int k;
760	>	for (k=i; k<argc; k++)
761	>	if (argv[k] != NULL)
762	>	break;
763	>	if (k > i) {
764	>	k -= i;
765	>	for (int j=i+k; j<argc; j++)
766	>	argv[j-k] = argv[j];
767	>	argc -= k;
768	>	}
769	>	}
770	>
771	>	// Connect to the external GUI
772	>	if (gui_connection_path) {
773	>	if ((gui_connection = rpc_init_client(gui_connection_path)) == NULL) {
774	>	fprintf(stderr, "Failed to initialize RPC client connection to the GUI\n");
775	>	return 1;
776	>	}
777	>	}
778	>
779	>	#ifdef ENABLE_GTK
780	>	if (!gui_connection) {
781	>	// Init GTK
782	>	gtk_set_locale();
783	>	gtk_init(&argc, &argv);
784	>	}
785	>	#endif
786	>
787	>	// Read preferences
788	>	PrefsInit(vmdir, argc, argv);
789	>
790	>	// Any command line arguments left?
791	>	for (int i=1; i<argc; i++) {
792	>	if (argv[i][0] == '-') {
793		fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
794		usage(argv[0]);
795		}
796		}
797
798	+	#ifdef USE_SDL
799	+	// Initialize SDL system
800	+	if (!init_sdl())
801	+	goto quit;
802	+	#endif
803	+
804	+	#ifndef USE_SDL_VIDEO
805		// Open display
806		x_display = XOpenDisplay(x_display_name);
807		if (x_display == NULL) {
#	Line 436 | Line 815 | int main(int argc, char **argv)
815		// Fork out, so we can return from fullscreen mode when things get ugly
816		XF86DGAForkApp(DefaultScreen(x_display));
817		#endif
818	+	#endif
819
820		#ifdef ENABLE_MON
821		// Initialize mon
822		mon_init();
823		#endif
824
825	<	// Get system info
826	<	PVR = 0x00040000;                       // Default: 604
827	<	CPUClockSpeed = 100000000;      // Default: 100MHz
448	<	BusClockSpeed = 100000000;      // Default: 100MHz
449	<	#if !EMULATED_PPC
450	<	proc_file = fopen("/proc/cpuinfo", "r");
451	<	if (proc_file) {
452	<	char line[256];
453	<	while(fgets(line, 255, proc_file)) {
454	<	// Read line
455	<	int len = strlen(line);
456	<	if (len == 0)
457	<	continue;
458	<	line[len-1] = 0;
825	>	// Install signal handlers
826	>	if (!install_signal_handlers())
827	>	goto quit;
828
829	<	// Parse line
830	<	int i;
831	<	char value[256];
832	<	if (sscanf(line, "cpu : %s", value) == 1) {
833	<	if (strcmp(value, "601") == 0)
465	<	PVR = 0x00010000;
466	<	else if (strcmp(value, "603") == 0)
467	<	PVR = 0x00030000;
468	<	else if (strcmp(value, "604") == 0)
469	<	PVR = 0x00040000;
470	<	else if (strcmp(value, "603e") == 0)
471	<	PVR = 0x00060000;
472	<	else if (strcmp(value, "603ev") == 0)
473	<	PVR = 0x00070000;
474	<	else if (strcmp(value, "604e") == 0)
475	<	PVR = 0x00090000;
476	<	else if (strcmp(value, "604ev5") == 0)
477	<	PVR = 0x000a0000;
478	<	else if (strcmp(value, "750") == 0)
479	<	PVR = 0x00080000;
480	<	else if (strcmp(value, "821") == 0)
481	<	PVR = 0x00320000;
482	<	else if (strcmp(value, "860") == 0)
483	<	PVR = 0x00500000;
484	<	else
485	<	printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
486	<	}
487	<	if (sscanf(line, "clock : %dMHz", &i) == 1)
488	<	CPUClockSpeed = BusClockSpeed = i * 1000000;
489	<	}
490	<	fclose(proc_file);
491	<	} else {
492	<	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
493	<	WarningAlert(str);
494	<	}
495	<	#endif
496	<	D(bug("PVR: %08x (assumed)\n", PVR));
829	>	// Initialize VM system
830	>	vm_init();
831	>
832	>	// Get system info
833	>	get_system_info();
834
835		// Init system routines
836		SysInit();
#	Line 516 | Line 853 | int main(int argc, char **argv)
853		goto quit;
854		}
855
856	<	#ifndef PAGEZERO_HACK
857	<	// Create Low Memory area (0x0000..0x3000)
521	<	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
522	<	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
523	<	ErrorAlert(str);
856	>	// Create areas for Kernel Data
857	>	if (!kernel_data_init())
858		goto quit;
859	<	}
860	<	lm_area_mapped = true;
861	<	#endif
859	>	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
860	>	emulator_data = &kernel_data->ed;
861	>	KernelDataAddr = KERNEL_DATA_BASE;
862	>	D(bug("Kernel Data at %p (%08x)\n", kernel_data, KERNEL_DATA_BASE));
863	>	D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
864
865	<	// Create areas for Kernel Data
866	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
867	<	if (kernel_area == -1) {
532	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
865	>	// Create area for DR Cache
866	>	if (vm_mac_acquire_fixed(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
867	>	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
868		ErrorAlert(str);
869		goto quit;
870		}
871	<	if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) {
872	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
871	>	dr_emulator_area_mapped = true;
872	>	if (vm_mac_acquire_fixed(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
873	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
874		ErrorAlert(str);
875		goto quit;
876		}
877	<	if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) {
878	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
877	>	dr_cache_area_mapped = true;
878	>	#if !EMULATED_PPC
879	>	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
880	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
881		ErrorAlert(str);
882		goto quit;
883		}
884	<	kernel_data = (KernelData *)KERNEL_DATA_BASE;
885	<	emulator_data = &kernel_data->ed;
886	<	KernelDataAddr = KERNEL_DATA_BASE;
549	<	D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
884	>	#endif
885	>	DRCacheAddr = DR_CACHE_BASE;
886	>	D(bug("DR Cache at %p\n", DRCacheAddr));
887
888		// Create area for SheepShaver data
889		if (!SheepMem::Init()) {
#	Line 554 | Line 891 | int main(int argc, char **argv)
891		ErrorAlert(str);
892		goto quit;
893		}
894	<
558	<	// Create area for Mac ROM
559	<	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
560	<	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
561	<	ErrorAlert(str);
562	<	goto quit;
563	<	}
564	<	#if !EMULATED_PPC
565	<	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
566	<	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
567	<	ErrorAlert(str);
568	<	goto quit;
569	<	}
570	<	#endif
571	<	rom_area_mapped = true;
572	<	D(bug("ROM area at %08x\n", ROM_BASE));
573	<
894	>
895		// Create area for Mac RAM
896		RAMSize = PrefsFindInt32("ramsize");
897		if (RAMSize < 8*1024*1024) {
898		WarningAlert(GetString(STR_SMALL_RAM_WARN));
899		RAMSize = 8*1024*1024;
900		}
901	<
902	<	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
903	<	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
904	<	ErrorAlert(str);
905	<	goto quit;
901	>	memory_mapped_from_zero = false;
902	>	ram_rom_areas_contiguous = false;
903	>	#if REAL_ADDRESSING && HAVE_LINKER_SCRIPT
904	>	if (vm_mac_acquire_fixed(0, RAMSize) == 0) {
905	>	D(bug("Could allocate RAM from 0x0000\n"));
906	>	RAMBase = 0;
907	>	RAMBaseHost = Mac2HostAddr(RAMBase);
908	>	memory_mapped_from_zero = true;
909	>	}
910	>	#endif
911	>	if (!memory_mapped_from_zero) {
912	>	#ifndef PAGEZERO_HACK
913	>	// Create Low Memory area (0x0000..0x3000)
914	>	if (vm_mac_acquire_fixed(0, 0x3000) < 0) {
915	>	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
916	>	ErrorAlert(str);
917	>	goto quit;
918	>	}
919	>	lm_area_mapped = true;
920	>	#endif
921	>	#if REAL_ADDRESSING
922	>	// Allocate RAM at any address. Since ROM must be higher than RAM, allocate the RAM
923	>	// and ROM areas contiguously, plus a little extra to allow for ROM address alignment.
924	>	RAMBaseHost = vm_mac_acquire(RAMSize + ROM_AREA_SIZE + ROM_ALIGNMENT);
925	>	if (RAMBaseHost == VM_MAP_FAILED) {
926	>	sprintf(str, GetString(STR_RAM_ROM_MMAP_ERR), strerror(errno));
927	>	ErrorAlert(str);
928	>	goto quit;
929	>	}
930	>	RAMBase = Host2MacAddr(RAMBaseHost);
931	>	ROMBase = (RAMBase + RAMSize + ROM_ALIGNMENT -1) & -ROM_ALIGNMENT;
932	>	ROMBaseHost = Mac2HostAddr(ROMBase);
933	>	ram_rom_areas_contiguous = true;
934	>	#else
935	>	if (vm_mac_acquire_fixed(RAM_BASE, RAMSize) < 0) {
936	>	sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
937	>	ErrorAlert(str);
938	>	goto quit;
939	>	}
940	>	RAMBase = RAM_BASE;
941	>	RAMBaseHost = Mac2HostAddr(RAMBase);
942	>	#endif
943		}
944		#if !EMULATED_PPC
945	<	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
945	>	if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
946		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
947		ErrorAlert(str);
948		goto quit;
949		}
950		#endif
593	–	RAMBase = RAM_BASE;
951		ram_area_mapped = true;
952	<	D(bug("RAM area at %08x\n", RAMBase));
952	>	D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
953
954	<	if (RAMBase > ROM_BASE) {
955	<	ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
954	>	if (RAMBase > KernelDataAddr) {
955	>	ErrorAlert(GetString(STR_RAM_AREA_TOO_HIGH_ERR));
956		goto quit;
957		}
601	–
602	–	// Load Mac ROM
603	–	rom_path = PrefsFindString("rom");
604	–	rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
605	–	if (rom_fd < 0) {
606	–	rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME2, O_RDONLY);
607	–	if (rom_fd < 0) {
608	–	ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
609	–	goto quit;
610	–	}
611	–	}
612	–	printf(GetString(STR_READING_ROM_FILE));
613	–	rom_size = lseek(rom_fd, 0, SEEK_END);
614	–	lseek(rom_fd, 0, SEEK_SET);
615	–	rom_tmp = new uint8[ROM_SIZE];
616	–	actual = read(rom_fd, (void *)rom_tmp, ROM_SIZE);
617	–	close(rom_fd);
958
959	<	// Decode Mac ROM
960	<	if (!DecodeROM(rom_tmp, actual)) {
961	<	if (rom_size != 4*1024*1024) {
962	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
963	<	goto quit;
624	<	} else {
625	<	ErrorAlert(GetString(STR_ROM_FILE_READ_ERR));
959	>	// Create area for Mac ROM
960	>	if (!ram_rom_areas_contiguous) {
961	>	if (vm_mac_acquire_fixed(ROM_BASE, ROM_AREA_SIZE) < 0) {
962	>	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
963	>	ErrorAlert(str);
964		goto quit;
965		}
966	+	ROMBase = ROM_BASE;
967	+	ROMBaseHost = Mac2HostAddr(ROMBase);
968		}
969	<	delete[] rom_tmp;
970	<
971	<	// Load NVRAM
972	<	XPRAMInit();
633	<
634	<	// Set boot volume
635	<	i16 = PrefsFindInt32("bootdrive");
636	<	XPRAM[0x1378] = i16 >> 8;
637	<	XPRAM[0x1379] = i16 & 0xff;
638	<	i16 = PrefsFindInt32("bootdriver");
639	<	XPRAM[0x137a] = i16 >> 8;
640	<	XPRAM[0x137b] = i16 & 0xff;
641	<
642	<	// Create BootGlobs at top of Mac memory
643	<	memset((void *)(RAMBase + RAMSize - 4096), 0, 4096);
644	<	BootGlobsAddr = RAMBase + RAMSize - 0x1c;
645	<	boot_globs = (uint32 *)BootGlobsAddr;
646	<	boot_globs[-5] = htonl(RAMBase + RAMSize);      // MemTop
647	<	boot_globs[0] = htonl(RAMBase);                         // First RAM bank
648	<	boot_globs[1] = htonl(RAMSize);
649	<	boot_globs[2] = htonl((uint32)-1);                      // End of bank table
650	<
651	<	// Init thunks
652	<	if (!ThunksInit())
969	>	#if !EMULATED_PPC
970	>	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
971	>	sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
972	>	ErrorAlert(str);
973		goto quit;
974	+	}
975	+	#endif
976	+	rom_area_mapped = true;
977	+	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROMBase));
978
979	<	// Init drivers
980	<	SonyInit();
981	<	DiskInit();
982	<	CDROMInit();
659	<	SCSIInit();
660	<
661	<	// Init external file system
662	<	ExtFSInit();
663	<
664	<	// Init ADB
665	<	ADBInit();
666	<
667	<	// Init audio
668	<	AudioInit();
669	<
670	<	// Init network
671	<	EtherInit();
672	<
673	<	// Init serial ports
674	<	SerialInit();
675	<
676	<	// Init Time Manager
677	<	TimerInit();
678	<
679	<	// Init clipboard
680	<	ClipInit();
979	>	if (RAMBase > ROMBase) {
980	>	ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
981	>	goto quit;
982	>	}
983
984	<	// Init video
985	<	if (!VideoInit())
984	>	// Load Mac ROM
985	>	if (!load_mac_rom())
986		goto quit;
987
988	<	// Install ROM patches
989	<	if (!PatchROM()) {
688	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
988	>	// Initialize everything
989	>	if (!InitAll(vmdir))
990		goto quit;
991	<	}
991	>	D(bug("Initialization complete\n"));
992
993		// Clear caches (as we loaded and patched code) and write protect ROM
994		#if !EMULATED_PPC
995	<	MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
695	<	#endif
696	<	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
697	<
698	<	// Initialize Kernel Data
699	<	memset(kernel_data, 0, sizeof(KernelData));
700	<	if (ROMType == ROMTYPE_NEWWORLD) {
701	<	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
702	<	memset((void *)of_dev_tree, 0, 4 * sizeof(uint32));
703	<	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
704	<	uintptr vector_mask_tbl = SheepMem::Reserve(64);
705	<	memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
706	<	memset((void *)vector_lookup_tbl, 0, 128);
707	<	memset((void *)vector_mask_tbl, 0, 64);
708	<	kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
709	<	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree);                        // OF device tree base
710	<	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
711	<	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
712	<	kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
713	<	kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
714	<	kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
715	<	kernel_data->v[0xc24 >> 2] = htonl(RAMSize);
716	<	kernel_data->v[0xc30 >> 2] = htonl(RAMSize);
717	<	kernel_data->v[0xc34 >> 2] = htonl(RAMSize);
718	<	kernel_data->v[0xc38 >> 2] = htonl(0x00010020);
719	<	kernel_data->v[0xc3c >> 2] = htonl(0x00200001);
720	<	kernel_data->v[0xc40 >> 2] = htonl(0x00010000);
721	<	kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
722	<	kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
723	<	kernel_data->v[0xf60 >> 2] = htonl(PVR);
724	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
725	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
726	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
727	<	} else {
728	<	kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
729	<	kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
730	<	kernel_data->v[0xc90 >> 2] = htonl(RAMSize);
731	<	kernel_data->v[0xc94 >> 2] = htonl(RAMSize);
732	<	kernel_data->v[0xc98 >> 2] = htonl(0x00010020);
733	<	kernel_data->v[0xc9c >> 2] = htonl(0x00200001);
734	<	kernel_data->v[0xca0 >> 2] = htonl(0x00010000);
735	<	kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
736	<	kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
737	<	kernel_data->v[0xf80 >> 2] = htonl(PVR);
738	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
739	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
740	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
741	<	}
742	<
743	<	// Initialize extra low memory
744	<	D(bug("Initializing Low Memory...\n"));
745	<	memset(NULL, 0, 0x3000);
746	<	WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
747	<	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr);                                 // For trap replacement routines
748	<	WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
749	<	WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
750	<	WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
751	<	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage());                             // Pointer to read-only page with all bits set to 0
752	<	#if !EMULATED_PPC
753	<	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                            // TOC pointer of emulator
995	>	flush_icache_range(ROMBase, ROMBase + ROM_AREA_SIZE);
996		#endif
997	<	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT));       // DLPI ethernet driver functions
756	<	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
757	<	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
758	<	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
759	<	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
760	<	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
761	<	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
762	<	D(bug("Low Memory initialized\n"));
997	>	vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
998
999		// Start 60Hz thread
1000	+	tick_thread_cancel = false;
1001		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
1002		D(bug("Tick thread installed (%ld)\n", tick_thread));
1003
1004		// Start NVRAM watchdog thread
1005		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1006	+	nvram_thread_cancel = false;
1007		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
1008		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
1009
1010		#if !EMULATED_PPC
774	–	// Create and install stacks for signal handlers
775	–	sig_stack = malloc(SIG_STACK_SIZE);
776	–	D(bug("Signal stack at %p\n", sig_stack));
777	–	if (sig_stack == NULL) {
778	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
779	–	goto quit;
780	–	}
781	–	extra_stack = malloc(SIG_STACK_SIZE);
782	–	D(bug("Extra stack at %p\n", extra_stack));
783	–	if (extra_stack == NULL) {
784	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
785	–	goto quit;
786	–	}
787	–	struct sigaltstack new_stack;
788	–	new_stack.ss_sp = sig_stack;
789	–	new_stack.ss_flags = 0;
790	–	new_stack.ss_size = SIG_STACK_SIZE;
791	–	if (sigaltstack(&new_stack, NULL) < 0) {
792	–	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
793	–	ErrorAlert(str);
794	–	goto quit;
795	–	}
796	–	#endif
797	–
798	–	#if !EMULATED_PPC
799	–	// Install SIGSEGV and SIGBUS handlers
800	–	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
801	–	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
802	–	sigsegv_action.sa_sigaction = sigsegv_handler;
803	–	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
804	–	#ifdef HAVE_SIGNAL_SA_RESTORER
805	–	sigsegv_action.sa_restorer = NULL;
806	–	#endif
807	–	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
808	–	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
809	–	ErrorAlert(str);
810	–	goto quit;
811	–	}
812	–	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
813	–	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
814	–	ErrorAlert(str);
815	–	goto quit;
816	–	}
817	–
1011		// Install SIGILL handler
1012		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
1013		sigaddset(&sigill_action.sa_mask, SIGUSR2);
#	Line 824 | Line 1017 | int main(int argc, char **argv)
1017		sigill_action.sa_restorer = NULL;
1018		#endif
1019		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
1020	<	sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
1020	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
1021		ErrorAlert(str);
1022		goto quit;
1023		}
#	Line 833 | Line 1026 | int main(int argc, char **argv)
1026		#if !EMULATED_PPC
1027		// Install interrupt signal handler
1028		sigemptyset(&sigusr2_action.sa_mask);
1029	<	sigusr2_action.sa_sigaction = sigusr2_handler;
1029	>	sigusr2_action.sa_sigaction = sigusr2_handler_init;
1030		sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
1031		#ifdef HAVE_SIGNAL_SA_RESTORER
1032		sigusr2_action.sa_restorer = NULL;
1033		#endif
1034		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
1035	<	sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
1035	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGUSR2", strerror(errno));
1036		ErrorAlert(str);
1037		goto quit;
1038		}
#	Line 869 | Line 1062 | static void Quit(void)
1062
1063		// Stop 60Hz thread
1064		if (tick_thread_active) {
1065	+	tick_thread_cancel = true;
1066		pthread_cancel(tick_thread);
1067		pthread_join(tick_thread, NULL);
1068		}
1069
1070		// Stop NVRAM watchdog thread
1071		if (nvram_thread_active) {
1072	+	nvram_thread_cancel = true;
1073		pthread_cancel(nvram_thread);
1074		pthread_join(nvram_thread, NULL);
1075		}
#	Line 892 | Line 1087 | static void Quit(void)
1087		sigill_action.sa_handler = SIG_DFL;
1088		sigill_action.sa_flags = 0;
1089		sigaction(SIGILL, &sigill_action, NULL);
895	–	#endif
896	–
897	–	// Save NVRAM
898	–	XPRAMExit();
899	–
900	–	// Exit clipboard
901	–	ClipExit();
1090
1091	<	// Exit Time Manager
1092	<	TimerExit();
1093	<
1094	<	// Exit serial
1095	<	SerialExit();
1096	<
909	<	// Exit network
910	<	EtherExit();
911	<
912	<	// Exit audio
913	<	AudioExit();
914	<
915	<	// Exit ADB
916	<	ADBExit();
917	<
918	<	// Exit video
919	<	VideoExit();
920	<
921	<	// Exit external file system
922	<	ExtFSExit();
923	<
924	<	// Exit drivers
925	<	SCSIExit();
926	<	CDROMExit();
927	<	DiskExit();
928	<	SonyExit();
1091	>	// Delete stacks for signal handlers
1092	>	if (sig_stack.ss_sp)
1093	>	free(sig_stack.ss_sp);
1094	>	if (extra_stack.ss_sp)
1095	>	free(extra_stack.ss_sp);
1096	>	#endif
1097
1098	<	// Delete thunks
1099	<	ThunksExit();
1098	>	// Deinitialize everything
1099	>	ExitAll();
1100
1101		// Delete SheepShaver globals
1102		SheepMem::Exit();
1103
1104		// Delete RAM area
1105		if (ram_area_mapped)
1106	<	vm_release((char *)RAM_BASE, RAMSize);
1106	>	vm_mac_release(RAMBase, RAMSize);
1107
1108		// Delete ROM area
1109		if (rom_area_mapped)
1110	<	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
1110	>	vm_mac_release(ROMBase, ROM_AREA_SIZE);
1111	>
1112	>	// Delete DR cache areas
1113	>	if (dr_emulator_area_mapped)
1114	>	vm_mac_release(DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
1115	>	if (dr_cache_area_mapped)
1116	>	vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
1117
1118		// Delete Kernel Data area
1119	<	if (kernel_area >= 0) {
946	<	shmdt((void *)KERNEL_DATA_BASE);
947	<	shmdt((void *)KERNEL_DATA2_BASE);
948	<	shmctl(kernel_area, IPC_RMID, NULL);
949	<	}
1119	>	kernel_data_exit();
1120
1121		// Delete Low Memory area
1122		if (lm_area_mapped)
1123	<	munmap((char *)0x0000, 0x3000);
1123	>	vm_mac_release(0, 0x3000);
1124
1125		// Close /dev/zero
1126		if (zero_fd > 0)
#	Line 968 | Line 1138 | static void Quit(void)
1138		#endif
1139
1140		// Close X11 server connection
1141	+	#ifndef USE_SDL_VIDEO
1142		if (x_display)
1143		XCloseDisplay(x_display);
1144	+	#endif
1145	+
1146	+	// Notify GUI we are about to leave
1147	+	if (gui_connection) {
1148	+	if (rpc_method_invoke(gui_connection, RPC_METHOD_EXIT, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
1149	+	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID);
1150	+	}
1151
1152		exit(0);
1153		}
1154
1155
1156		/*
1157	+	*  Initialize Kernel Data segments
1158	+	*/
1159	+
1160	+	static bool kernel_data_init(void)
1161	+	{
1162	+	char str[256];
1163	+	uint32 kernel_area_size = (KERNEL_AREA_SIZE + SHMLBA - 1) & -SHMLBA;
1164	+
1165	+	kernel_area = shmget(IPC_PRIVATE, kernel_area_size, 0600);
1166	+	if (kernel_area == -1) {
1167	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1168	+	ErrorAlert(str);
1169	+	return false;
1170	+	}
1171	+	void *kernel_addr = Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA);
1172	+	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1173	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1174	+	ErrorAlert(str);
1175	+	return false;
1176	+	}
1177	+	kernel_addr = Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA);
1178	+	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1179	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1180	+	ErrorAlert(str);
1181	+	return false;
1182	+	}
1183	+	return true;
1184	+	}
1185	+
1186	+
1187	+	/*
1188	+	*  Deallocate Kernel Data segments
1189	+	*/
1190	+
1191	+	static void kernel_data_exit(void)
1192	+	{
1193	+	if (kernel_area >= 0) {
1194	+	shmdt(Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA));
1195	+	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA));
1196	+	shmctl(kernel_area, IPC_RMID, NULL);
1197	+	}
1198	+	}
1199	+
1200	+
1201	+	/*
1202		*  Jump into Mac ROM, start 680x0 emulator
1203		*/
1204
#	Line 1003 | Line 1226 | static void *emul_func(void *arg)
1226		// Jump to ROM boot routine
1227		D(bug("Jumping to ROM\n"));
1228		#if EMULATED_PPC
1229	<	jump_to_rom(ROM_BASE + 0x310000);
1229	>	jump_to_rom(ROMBase + 0x310000);
1230		#else
1231	<	jump_to_rom(ROM_BASE + 0x310000, (uint32)emulator_data);
1231	>	jump_to_rom(ROMBase + 0x310000, (uint32)emulator_data);
1232		#endif
1233		D(bug("Returned from ROM\n"));
1234
#	Line 1062 | Line 1285 | void QuitEmulator(void)
1285
1286
1287		/*
1065	–	*  Pause/resume emulator
1066	–	*/
1067	–
1068	–	void PauseEmulator(void)
1069	–	{
1070	–	pthread_kill(emul_thread, SIGSTOP);
1071	–	}
1072	–
1073	–	void ResumeEmulator(void)
1074	–	{
1075	–	pthread_kill(emul_thread, SIGCONT);
1076	–	}
1077	–
1078	–
1079	–	/*
1288		*  Dump 68k registers
1289		*/
1290
#	Line 1104 | Line 1312 | void Dump68kRegs(M68kRegisters *r)
1312		*  Make code executable
1313		*/
1314
1315	<	void MakeExecutable(int dummy, void *start, uint32 length)
1315	>	void MakeExecutable(int dummy, uint32 start, uint32 length)
1316		{
1317	<	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1317	>	if ((start >= ROMBase) && (start < (ROMBase + ROM_SIZE)))
1318		return;
1319		#if EMULATED_PPC
1320	<	FlushCodeCache((uintptr)start, (uintptr)start + length);
1320	>	FlushCodeCache(start, start + length);
1321		#else
1322	<	flush_icache_range(start, (void *)((uintptr)start + length));
1322	>	flush_icache_range(start, start + length);
1323		#endif
1324		}
1325
1326
1327		/*
1328	<	*  Patch things after system startup (gets called by disk driver accRun routine)
1328	>	*  NVRAM watchdog thread (saves NVRAM every minute)
1329		*/
1330
1331	<	void PatchAfterStartup(void)
1331	>	static void nvram_watchdog(void)
1332		{
1333	<	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1334	<	InstallExtFS();
1333	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1334	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1335	>	SaveXPRAM();
1336	>	}
1337		}
1338
1129	–
1130	–	/*
1131	–	*  NVRAM watchdog thread (saves NVRAM every minute)
1132	–	*/
1133	–
1339		static void *nvram_func(void *arg)
1340		{
1341	<	struct timespec req = {60, 0};  // 1 minute
1342	<
1343	<	for (;;) {
1344	<	pthread_testcancel();
1140	<	nanosleep(&req, NULL);
1141	<	pthread_testcancel();
1142	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1143	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1144	<	SaveXPRAM();
1145	<	}
1341	>	while (!nvram_thread_cancel) {
1342	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1343	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1344	>	nvram_watchdog();
1345		}
1346		return NULL;
1347		}
#	Line 1155 | Line 1354 | static void *nvram_func(void *arg)
1354		static void *tick_func(void *arg)
1355		{
1356		int tick_counter = 0;
1357	<	struct timespec req = {0, 16625000};
1357	>	uint64 start = GetTicks_usec();
1358	>	int64 ticks = 0;
1359	>	uint64 next = GetTicks_usec();
1360
1361	<	for (;;) {
1361	>	while (!tick_thread_cancel) {
1362
1363		// Wait
1364	<	nanosleep(&req, NULL);
1364	>	next += 16625;
1365	>	int64 delay = next - GetTicks_usec();
1366	>	if (delay > 0)
1367	>	Delay_usec(delay);
1368	>	else if (delay < -16625)
1369	>	next = GetTicks_usec();
1370	>	ticks++;
1371
1372		#if !EMULATED_PPC
1373		// Did we crash?
#	Line 1218 | Line 1425 | static void *tick_func(void *arg)
1425		TriggerInterrupt();
1426		}
1427		}
1428	+
1429	+	uint64 end = GetTicks_usec();
1430	+	D(bug("%lld ticks in %lld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1431		return NULL;
1432		}
1433
#	Line 1267 | Line 1477 | struct B2_mutex {
1477		pthread_mutexattr_init(&attr);
1478		// Initialize the mutex for priority inheritance --
1479		// required for accurate timing.
1480	<	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1480	>	#if defined(HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL) && !defined(__CYGWIN__)
1481		pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1482		#endif
1483		#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
#	Line 1338 | Line 1548 | void B2_delete_mutex(B2_mutex *mutex)
1548		*  Trigger signal USR2 from another thread
1549		*/
1550
1551	<	#if !EMULATED_PPC || ASYNC_IRQ
1551	>	#if !EMULATED_PPC
1552		void TriggerInterrupt(void)
1553		{
1554	<	if (ready_for_signals)
1554	>	if (ready_for_signals) {
1555	>	idle_resume();
1556		pthread_kill(emul_thread, SIGUSR2);
1557	+	}
1558		}
1559		#endif
1560
#	Line 1370 | Line 1582 | void ClearInterruptFlag(uint32 flag)
1582
1583		void DisableInterrupt(void)
1584		{
1585	+	#if EMULATED_PPC
1586	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1587	+	#else
1588		atomic_add((int *)XLM_IRQ_NEST, 1);
1589	+	#endif
1590		}
1591
1592
#	Line 1380 | Line 1596 | void DisableInterrupt(void)
1596
1597		void EnableInterrupt(void)
1598		{
1599	+	#if EMULATED_PPC
1600	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1601	+	#else
1602		atomic_add((int *)XLM_IRQ_NEST, -1);
1603	+	#endif
1604		}
1605
1606
#	Line 1388 | Line 1608 | void EnableInterrupt(void)
1608		*  USR2 handler
1609		*/
1610
1611	<	#if EMULATED_PPC
1612	<	static void sigusr2_handler(int sig)
1393	<	{
1394	<	#if ASYNC_IRQ
1395	<	extern void HandleInterrupt(void);
1396	<	HandleInterrupt();
1397	<	#endif
1398	<	}
1399	<	#else
1400	<	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1611	>	#if !EMULATED_PPC
1612	>	void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1613		{
1614		machine_regs *r = MACHINE_REGISTERS(scp);
1615
1616	+	#ifdef SYSTEM_CLOBBERS_R2
1617	+	// Restore pointer to Thread Local Storage
1618	+	set_r2(TOC);
1619	+	#endif
1620	+	#ifdef SYSTEM_CLOBBERS_R13
1621	+	// Restore pointer to .sdata section
1622	+	set_r13(R13);
1623	+	#endif
1624	+
1625	+	#ifdef USE_SDL_VIDEO
1626	+	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1627	+	SDL_PumpEvents();
1628	+	#endif
1629	+
1630		// Do nothing if interrupts are disabled
1631		if (*(int32 *)XLM_IRQ_NEST > 0)
1632		return;
#	Line 1420 | Line 1646 | static void sigusr2_handler(int sig, sig
1646		case MODE_NATIVE:
1647		// 68k emulator inactive, in nanokernel?
1648		if (r->gpr(1) != KernelDataAddr) {
1649	+
1650	+	// Set extra stack for SIGSEGV handler
1651	+	sigaltstack(&extra_stack, NULL);
1652	+
1653		// Prepare for 68k interrupt level 1
1654		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1655		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1656
1657		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1658	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1658	>	DisableInterrupt();
1659		if (ROMType == ROMTYPE_NEWWORLD)
1660	<	ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1660	>	ppc_interrupt(ROMBase + 0x312b1c, KernelDataAddr);
1661		else
1662	<	ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1662	>	ppc_interrupt(ROMBase + 0x312a3c, KernelDataAddr);
1663	>
1664	>	// Reset normal stack
1665	>	sigaltstack(&sig_stack, NULL);
1666		}
1667		break;
1668		#endif
#	Line 1440 | Line 1673 | static void sigusr2_handler(int sig, sig
1673		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1674
1675		// Set extra stack for SIGSEGV handler
1676	<	struct sigaltstack new_stack;
1444	<	new_stack.ss_sp = extra_stack;
1445	<	new_stack.ss_flags = 0;
1446	<	new_stack.ss_size = SIG_STACK_SIZE;
1447	<	sigaltstack(&new_stack, NULL);
1676	>	sigaltstack(&extra_stack, NULL);
1677		#if 1
1678		// Execute full 68k interrupt routine
1679		M68kRegisters r;
#	Line 1470 | Line 1699 | static void sigusr2_handler(int sig, sig
1699		}
1700		}
1701		#endif
1702	<	// Reset normal signal stack
1703	<	new_stack.ss_sp = sig_stack;
1475	<	new_stack.ss_flags = 0;
1476	<	new_stack.ss_size = SIG_STACK_SIZE;
1477	<	sigaltstack(&new_stack, NULL);
1702	>	// Reset normal stack
1703	>	sigaltstack(&sig_stack, NULL);
1704		}
1705		break;
1706		#endif
#	Line 1495 | Line 1721 | static void sigsegv_handler(int sig, sig
1721		// Get effective address
1722		uint32 addr = r->dar();
1723
1724	+	#ifdef SYSTEM_CLOBBERS_R2
1725	+	// Restore pointer to Thread Local Storage
1726	+	set_r2(TOC);
1727	+	#endif
1728	+	#ifdef SYSTEM_CLOBBERS_R13
1729	+	// Restore pointer to .sdata section
1730	+	set_r13(R13);
1731	+	#endif
1732	+
1733		#if ENABLE_VOSF
1734	<	// Handle screen fault.
1735	<	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1736	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1734	>	// Handle screen fault
1735	>	#if SIGSEGV_CHECK_VERSION(1,0,0)
1736	>	sigsegv_info_t si;
1737	>	si.addr = (sigsegv_address_t)addr;
1738	>	si.pc = (sigsegv_address_t)r->pc();
1739	>	#endif
1740	>	extern bool Screen_fault_handler(sigsegv_info_t *sip);
1741	>	if (Screen_fault_handler(&si))
1742		return;
1743		#endif
1744
1745		num_segv++;
1746
1747	<	// Fault in Mac ROM or RAM?
1748	<	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1747	>	// Fault in Mac ROM or RAM or DR Cache?
1748	>	bool mac_fault = (r->pc() >= ROMBase) && (r->pc() < (ROMBase + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize)) || (r->pc() >= DR_CACHE_BASE && r->pc() < (DR_CACHE_BASE + DR_CACHE_SIZE));
1749		if (mac_fault) {
1750
1751		// "VM settings" during MacOS 8 installation
1752	<	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1752	>	if (r->pc() == ROMBase + 0x488160 && r->gpr(20) == 0xf8000000) {
1753		r->pc() += 4;
1754		r->gpr(8) = 0;
1755		return;
1756
1757		// MacOS 8.5 installation
1758	<	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1758	>	} else if (r->pc() == ROMBase + 0x488140 && r->gpr(16) == 0xf8000000) {
1759		r->pc() += 4;
1760		r->gpr(8) = 0;
1761		return;
1762
1763		// MacOS 8 serial drivers on startup
1764	<	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1764	>	} else if (r->pc() == ROMBase + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1765		r->pc() += 4;
1766		r->gpr(8) = 0;
1767		return;
1768
1769		// MacOS 8.1 serial drivers on startup
1770	<	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1770	>	} else if (r->pc() == ROMBase + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1771		r->pc() += 4;
1772		return;
1773	<	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1773	>	} else if (r->pc() == ROMBase + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1774	>	r->pc() += 4;
1775	>	return;
1776	>
1777	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1778	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1779	>	r->pc() += 4;
1780	>	return;
1781	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1782		r->pc() += 4;
1783		return;
1784		}
#	Line 1653 | Line 1901 | static void sigsegv_handler(int sig, sig
1901		#endif
1902		}
1903
1904	<	// Ignore ROM writes
1905	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1904	>	// Ignore ROM writes (including to the zero page, which is read-only)
1905	>	if (transfer_type == TYPE_STORE &&
1906	>	((addr >= ROMBase && addr < ROMBase + ROM_SIZE) ||
1907	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1908		//                      D(bug("WARNING: %s write access to ROM at %08lx, pc %08lx\n", transfer_size == SIZE_BYTE ? "Byte" : transfer_size == SIZE_HALFWORD ? "Halfword" : "Word", addr, r->pc()));
1909		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1910		r->gpr(ra) = addr;
#	Line 1734 | Line 1984 | static void sigill_handler(int sig, sigi
1984		machine_regs *r = MACHINE_REGISTERS(scp);
1985		char str[256];
1986
1987	+	#ifdef SYSTEM_CLOBBERS_R2
1988	+	// Restore pointer to Thread Local Storage
1989	+	set_r2(TOC);
1990	+	#endif
1991	+	#ifdef SYSTEM_CLOBBERS_R13
1992	+	// Restore pointer to .sdata section
1993	+	set_r13(R13);
1994	+	#endif
1995	+
1996		// Fault in Mac ROM or RAM?
1997	<	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1997	>	bool mac_fault = (r->pc() >= ROMBase) && (r->pc() < (ROMBase + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1998		if (mac_fault) {
1999
2000		// Get opcode and divide into fields
#	Line 1898 | Line 2157 | rti:;
2157
2158		bool SheepMem::Init(void)
2159		{
2160	<	const int page_size = getpagesize();
2160	>	// Size of a native page
2161	>	page_size = getpagesize();
2162
2163		// Allocate SheepShaver globals
2164	<	if (vm_acquire_fixed((char *)base, size) < 0)
2164	>	proc = base;
2165	>	if (vm_mac_acquire_fixed(base, size) < 0)
2166		return false;
2167
2168	<	// Allocate page with all bits set to 0
2169	<	zero_page = base + size;
2170	<	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
2171	<	return false;
2172	<	memset((char *)zero_page, 0, page_size);
1912	<	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
2168	>	// Allocate page with all bits set to 0, right in the middle
2169	>	// This is also used to catch undesired overlaps between proc and data areas
2170	>	zero_page = proc + (size / 2);
2171	>	Mac_memset(zero_page, 0, page_size);
2172	>	if (vm_protect(Mac2HostAddr(zero_page), page_size, VM_PAGE_READ) < 0)
2173		return false;
2174
2175		#if EMULATED_PPC
2176		// Allocate alternate stack for PowerPC interrupt routine
2177	<	sig_stack = zero_page + page_size;
2178	<	if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0)
2177	>	sig_stack = base + size;
2178	>	if (vm_mac_acquire_fixed(sig_stack, SIG_STACK_SIZE) < 0)
2179		return false;
2180		#endif
2181
2182	<	top = base + size;
2182	>	data = base + size;
2183		return true;
2184		}
2185
2186		void SheepMem::Exit(void)
2187		{
2188	<	if (top) {
1929	<	const int page_size = getpagesize();
1930	<
2188	>	if (data) {
2189		// Delete SheepShaver globals
2190	<	vm_release((void *)base, size);
1933	<
1934	<	// Delete zero page
1935	<	vm_release((void *)zero_page, page_size);
2190	>	vm_mac_release(base, size);
2191
2192		#if EMULATED_PPC
2193		// Delete alternate stack for PowerPC interrupt routine
2194	<	vm_release((void *)sig_stack, SIG_STACK_SIZE);
2194	>	vm_mac_release(sig_stack, SIG_STACK_SIZE);
2195		#endif
2196		}
2197		}
#	Line 1991 | Line 2246 | void display_alert(int title_id, int pre
2246
2247		void ErrorAlert(const char *text)
2248		{
2249	<	#ifdef ENABLE_GTK
2249	>	if (gui_connection) {
2250	>	if (rpc_method_invoke(gui_connection, RPC_METHOD_ERROR_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2251	>	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2252	>	return;
2253	>	}
2254	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2255		if (PrefsFindBool("nogui") || x_display == NULL) {
2256		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2257		return;
#	Line 2010 | Line 2270 | void ErrorAlert(const char *text)
2270
2271		void WarningAlert(const char *text)
2272		{
2273	<	#ifdef ENABLE_GTK
2273	>	if (gui_connection) {
2274	>	if (rpc_method_invoke(gui_connection, RPC_METHOD_WARNING_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2275	>	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2276	>	return;
2277	>	}
2278	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2279		if (PrefsFindBool("nogui") || x_display == NULL) {
2280		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2281		return;

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