aboutsummaryrefslogtreecommitdiffstats
path: root/code/sys/sys_main.c
blob: dcefa78ca48b0a25cab08e5cee01dab30ce83e7a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.

Quake III Arena source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <limits.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdarg.h>
#include <stdio.h>
#include <sys/stat.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>

#ifndef DEDICATED
#include "SDL.h"
#include "SDL_cpuinfo.h"
#endif

#include "sys_local.h"
#include "sys_loadlib.h"

#include "../qcommon/q_shared.h"
#include "../qcommon/qcommon.h"

static char binaryPath[ MAX_OSPATH ] = { 0 };
static char installPath[ MAX_OSPATH ] = { 0 };

/*
=================
Sys_SetBinaryPath
=================
*/
void Sys_SetBinaryPath(const char *path)
{
	Q_strncpyz(binaryPath, path, sizeof(binaryPath));
}

/*
=================
Sys_BinaryPath
=================
*/
char *Sys_BinaryPath(void)
{
	return binaryPath;
}

/*
=================
Sys_SetDefaultInstallPath
=================
*/
void Sys_SetDefaultInstallPath(const char *path)
{
	Q_strncpyz(installPath, path, sizeof(installPath));
}

/*
=================
Sys_DefaultInstallPath
=================
*/
char *Sys_DefaultInstallPath(void)
{
	if (*installPath)
		return installPath;
	else
		return Sys_Cwd();
}

/*
=================
Sys_In_Restart_f

Restart the input subsystem
=================
*/
void Sys_In_Restart_f( void )
{
	IN_Shutdown();
	IN_Init();
}

/*
=================
Sys_ConsoleInputInit

Start the console input subsystem
=================
*/
void Sys_ConsoleInputInit( void )
{
#ifdef DEDICATED
	CON_Init( );
#endif
}

/*
=================
Sys_ConsoleInputShutdown

Shutdown the console input subsystem
=================
*/
void Sys_ConsoleInputShutdown( void )
{
#ifdef DEDICATED
	CON_Shutdown( );
#endif
}

/*
=================
Sys_ConsoleInput

Handle new console input
=================
*/
char *Sys_ConsoleInput(void)
{
#ifdef DEDICATED
	return CON_ConsoleInput( );
#endif

	return NULL;
}

/*
=================
Sys_Exit

Single exit point (regular exit or in case of error)
=================
*/
void Sys_Exit( int ex )
{
	Sys_ConsoleInputShutdown();

#ifndef DEDICATED
	SDL_Quit( );
#endif

#ifdef NDEBUG
	// _exit is called instead of exit since there are rumours of
	// GL libraries installing atexit calls that we don't want to call
	// FIXME: get some testing done with plain exit
	_exit(ex);
#else
	// Cause a backtrace on error exits
	assert( ex == 0 );
	exit(ex);
#endif
}

/*
=================
Sys_Quit
=================
*/
void Sys_Quit (void)
{
	CL_Shutdown ();
	Sys_Exit(0);
}

/*
=================
Sys_GetProcessorFeatures
=================
*/
cpuFeatures_t Sys_GetProcessorFeatures( void )
{
	cpuFeatures_t features = 0;

#ifndef DEDICATED
	if( SDL_HasRDTSC( ) )    features |= CF_RDTSC;
	if( SDL_HasMMX( ) )      features |= CF_MMX;
	if( SDL_HasMMXExt( ) )   features |= CF_MMX_EXT;
	if( SDL_Has3DNow( ) )    features |= CF_3DNOW;
	if( SDL_Has3DNowExt( ) ) features |= CF_3DNOW_EXT;
	if( SDL_HasSSE( ) )      features |= CF_SSE;
	if( SDL_HasSSE2( ) )     features |= CF_SSE2;
	if( SDL_HasAltiVec( ) )  features |= CF_ALTIVEC;
#endif

	return features;
}

/*
=================
Sys_Init
=================
*/
void Sys_Init(void)
{
	Cmd_AddCommand( "in_restart", Sys_In_Restart_f );
	Cvar_Set( "arch", OS_STRING " " ARCH_STRING );
	Cvar_Set( "username", Sys_GetCurrentUser( ) );
}

/*
=================
Sys_AnsiColorPrint

Transform Q3 colour codes to ANSI escape sequences
=================
*/
static void Sys_AnsiColorPrint( const char *msg )
{
	static char buffer[ MAXPRINTMSG ];
	int         length = 0;
	static int  q3ToAnsi[ 8 ] =
	{
		30, // COLOR_BLACK
		31, // COLOR_RED
		32, // COLOR_GREEN
		33, // COLOR_YELLOW
		34, // COLOR_BLUE
		36, // COLOR_CYAN
		35, // COLOR_MAGENTA
		0   // COLOR_WHITE
	};

	while( *msg )
	{
		if( Q_IsColorString( msg ) || *msg == '\n' )
		{
			// First empty the buffer
			if( length > 0 )
			{
				buffer[ length ] = '\0';
				fputs( buffer, stderr );
				length = 0;
			}

			if( *msg == '\n' )
			{
				// Issue a reset and then the newline
				fputs( "\033[0m\n", stderr );
				msg++;
			}
			else
			{
				// Print the color code
				Com_sprintf( buffer, sizeof( buffer ), "\033[%dm",
						q3ToAnsi[ ColorIndex( *( msg + 1 ) ) ] );
				fputs( buffer, stderr );
				msg += 2;
			}
		}
		else
		{
			if( length >= MAXPRINTMSG - 1 )
				break;

			buffer[ length ] = *msg;
			length++;
			msg++;
		}
	}

	// Empty anything still left in the buffer
	if( length > 0 )
	{
		buffer[ length ] = '\0';
		fputs( buffer, stderr );
	}
}

/*
=================
Sys_Print
=================
*/
void Sys_Print( const char *msg )
{
#ifdef DEDICATED
	CON_Hide();
#endif

	if( com_ansiColor && com_ansiColor->integer )
		Sys_AnsiColorPrint( msg );
	else
		fputs(msg, stderr);

#ifdef DEDICATED
	CON_Show();
#endif
}

/*
=================
Sys_Error
=================
*/
void Sys_Error( const char *error, ... )
{
	va_list argptr;
	char    string[1024];

#ifdef DEDICATED
	CON_Hide();
#endif

	CL_Shutdown ();

	va_start (argptr,error);
	Q_vsnprintf (string, sizeof(string), error, argptr);
	va_end (argptr);
	fprintf(stderr, "Sys_Error: %s\n", string);

	Sys_Exit( 1 );
}

/*
=================
Sys_Warn
=================
*/
void Sys_Warn( char *warning, ... )
{
	va_list argptr;
	char    string[1024];

	va_start (argptr,warning);
	Q_vsnprintf (string, sizeof(string), warning, argptr);
	va_end (argptr);

#ifdef DEDICATED
	CON_Hide();
#endif

	fprintf(stderr, "Warning: %s", string);

#ifdef DEDICATED
	CON_Show();
#endif
}

/*
============
Sys_FileTime

returns -1 if not present
============
*/
int Sys_FileTime( char *path )
{
	struct stat buf;

	if (stat (path,&buf) == -1)
		return -1;

	return buf.st_mtime;
}

/*
=================
Sys_UnloadDll
=================
*/
void Sys_UnloadDll( void *dllHandle )
{
	if( !dllHandle )
	{
		Com_Printf("Sys_UnloadDll(NULL)\n");
		return;
	}

	Sys_UnloadLibrary(dllHandle);
}

/*
=================
Sys_TryLibraryLoad
=================
*/
static void* Sys_TryLibraryLoad(const char* base, const char* gamedir, const char* fname, char* fqpath )
{
	void* libHandle;
	char* fn;

	*fqpath = 0;

	fn = FS_BuildOSPath( base, gamedir, fname );
	Com_Printf( "Sys_LoadDll(%s)... \n", fn );

	libHandle = Sys_LoadLibrary(fn);

	if(!libHandle) {
		Com_Printf( "Sys_LoadDll(%s) failed:\n\"%s\"\n", fn, Sys_LibraryError() );
		return NULL;
	}

	Com_Printf ( "Sys_LoadDll(%s): succeeded ...\n", fn );
	Q_strncpyz ( fqpath , fn , MAX_QPATH ) ;

	return libHandle;
}

/*
=================
Sys_LoadDll

Used to load a development dll instead of a virtual machine
#1 look down current path
#2 look in fs_homepath
#3 look in fs_basepath
=================
*/
void *Sys_LoadDll( const char *name, char *fqpath ,
	intptr_t (**entryPoint)(int, ...),
	intptr_t (*systemcalls)(intptr_t, ...) )
{
	void  *libHandle;
	void  (*dllEntry)( intptr_t (*syscallptr)(intptr_t, ...) );
	char  curpath[MAX_OSPATH];
	char  fname[MAX_OSPATH];
	char  *basepath;
	char  *homepath;
	char  *pwdpath;
	char  *gamedir;

	assert( name );

	getcwd(curpath, sizeof(curpath));
	Q_snprintf (fname, sizeof(fname), "%s" ARCH_STRING DLL_EXT, name);

	// TODO: use fs_searchpaths from files.c
	pwdpath = Sys_Cwd();
	basepath = Cvar_VariableString( "fs_basepath" );
	homepath = Cvar_VariableString( "fs_homepath" );
	gamedir = Cvar_VariableString( "fs_game" );

	libHandle = Sys_TryLibraryLoad(pwdpath, gamedir, fname, fqpath);

	if(!libHandle && homepath)
		libHandle = Sys_TryLibraryLoad(homepath, gamedir, fname, fqpath);

	if(!libHandle && basepath)
		libHandle = Sys_TryLibraryLoad(basepath, gamedir, fname, fqpath);

	if(!libHandle) {
		Com_Printf ( "Sys_LoadDll(%s) failed to load library\n", name );
		return NULL;
	}

	dllEntry = Sys_LoadFunction( libHandle, "dllEntry" );
	*entryPoint = Sys_LoadFunction( libHandle, "vmMain" );

	if ( !*entryPoint || !dllEntry )
	{
		Com_Printf ( "Sys_LoadDll(%s) failed to find vmMain function:\n\"%s\" !\n", name, Sys_LibraryError( ) );
		Sys_UnloadLibrary(libHandle);

		return NULL;
	}

	Com_Printf ( "Sys_LoadDll(%s) found vmMain function at %p\n", name, *entryPoint );
	dllEntry( systemcalls );

	return libHandle;
}

/*
=================
Sys_Idle
=================
*/
static void Sys_Idle( void )
{
#ifndef DEDICATED
	int appState = SDL_GetAppState( );
	int sleep = 0;

	// If we have no input focus at all, sleep a bit
	if( !( appState & ( SDL_APPMOUSEFOCUS | SDL_APPINPUTFOCUS ) ) )
	{
		Cvar_SetValue( "com_unfocused", 1 );
		sleep += 16;
	}
	else
		Cvar_SetValue( "com_unfocused", 0 );

	// If we're minimised, sleep a bit more
	if( !( appState & SDL_APPACTIVE ) )
	{
		Cvar_SetValue( "com_minimized", 1 );
		sleep += 32;
	}
	else
		Cvar_SetValue( "com_minimized", 0 );

	if( !com_dedicated->integer && sleep )
		SDL_Delay( sleep );
#else
	// Dedicated server idles via NET_Sleep
#endif
}

/*
=================
Sys_ParseArgs
=================
*/
void Sys_ParseArgs( int argc, char **argv )
{
	if( argc == 2 )
	{
		if( !strcmp( argv[1], "--version" ) ||
				!strcmp( argv[1], "-v" ) )
		{
			const char* date = __DATE__;
#ifdef DEDICATED
			fprintf( stdout, Q3_VERSION " dedicated server (%s)\n", date );
#else
			fprintf( stdout, Q3_VERSION " client (%s)\n", date );
#endif
			Sys_Exit(0);
		}
	}
}

#ifndef DEFAULT_BASEDIR
#	ifdef MACOS_X
#		define DEFAULT_BASEDIR Sys_StripAppBundle(Sys_BinaryPath())
#	else
#		define DEFAULT_BASEDIR Sys_BinaryPath()
#	endif
#endif

/*
=================
Sys_SigHandler
=================
*/
void Sys_SigHandler( int signal )
{
	static qboolean signalcaught = qfalse;

	if( signalcaught )
	{
		fprintf( stderr, "DOUBLE SIGNAL FAULT: Received signal %d, exiting...\n",
			signal );
	}
	else
	{
		signalcaught = qtrue;
		fprintf( stderr, "Received signal %d, exiting...\n", signal );
#ifndef DEDICATED
		CL_Shutdown();
#endif
		SV_Shutdown( "Signal caught" );
	}

	Sys_Exit( 0 ); // Exit with 0 to avoid recursive signals
}

/*
=================
main
=================
*/
int main( int argc, char **argv )
{
	int   i;
	char  commandLine[ MAX_STRING_CHARS ] = { 0 };

#ifndef DEDICATED
  const SDL_version *ver = SDL_Linked_Version( );

#define STRING(s) #s
#define XSTRING(s) STRING(s)
#define MINSDL_VERSION \
  XSTRING(MINSDL_MAJOR) "." \
  XSTRING(MINSDL_MINOR) "." \
  XSTRING(MINSDL_PATCH)

  if( SDL_VERSIONNUM( ver->major, ver->minor, ver->patch ) <
      SDL_VERSIONNUM( MINSDL_MAJOR, MINSDL_MINOR, MINSDL_PATCH ) )
  {
    Sys_Print( "SDL version " MINSDL_VERSION " or greater required\n" );
    Sys_Exit( 1 );
  }
#endif

	Sys_ParseArgs( argc, argv );
	Sys_SetBinaryPath( Sys_Dirname( argv[ 0 ] ) );
	Sys_SetDefaultInstallPath( DEFAULT_BASEDIR );

	// Concatenate the command line for passing to Com_Init
	for( i = 1; i < argc; i++ )
	{
		Q_strcat( commandLine, sizeof( commandLine ), argv[ i ] );
		Q_strcat( commandLine, sizeof( commandLine ), " " );
	}

	Com_Init( commandLine );
	NET_Init();

	Sys_ConsoleInputInit();

#ifndef _WIN32
	// Windows doesn't have these signals
	// see CON_CtrlHandler() in con_win32.c
	signal( SIGHUP, Sys_SigHandler );
	signal( SIGQUIT, Sys_SigHandler );
	signal( SIGTRAP, Sys_SigHandler );
	signal( SIGIOT, Sys_SigHandler );
	signal( SIGBUS, Sys_SigHandler );
#endif

	signal( SIGILL, Sys_SigHandler );
	signal( SIGFPE, Sys_SigHandler );
	signal( SIGSEGV, Sys_SigHandler );
	signal( SIGTERM, Sys_SigHandler );

	while( 1 )
	{
		Sys_Idle( );
		IN_Frame( );
		Com_Frame( );
	}

	return 0;
}