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comparison src/cpuinfo/SDL_cpuinfo.c @ 1426:ef9a9064bff2

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*** empty log message ***
author Sam Lantinga <slouken@libsdl.org>
date Fri, 24 Feb 2006 10:23:49 +0000
parents d910939febfa
children e3242177fe4a
comparison
equal deleted inserted replaced
1425:aea151eb97b8 1426:ef9a9064bff2
53 { 53 {
54 longjmp(jmpbuf, 1); 54 longjmp(jmpbuf, 1);
55 } 55 }
56 #endif /* HAVE_SETJMP */ 56 #endif /* HAVE_SETJMP */
57 57
58 static __inline__ int CPU_haveCPUID() 58 static __inline__ int CPU_haveCPUID(void)
59 { 59 {
60 int has_CPUID = 0; 60 int has_CPUID = 0;
61 #if defined(__GNUC__) && defined(i386) 61 #if defined(__GNUC__) && defined(i386)
62 __asm__ ( 62 __asm__ (
63 " pushfl # Get original EFLAGS \n" 63 " pushfl # Get original EFLAGS \n"
143 ); 143 );
144 #endif 144 #endif
145 return has_CPUID; 145 return has_CPUID;
146 } 146 }
147 147
148 static __inline__ int CPU_getCPUIDFeatures() 148 static __inline__ int CPU_getCPUIDFeatures(void)
149 { 149 {
150 int features = 0; 150 int features = 0;
151 #if defined(__GNUC__) && ( defined(i386) || defined(__x86_64__) ) 151 #if defined(__GNUC__) && ( defined(i386) || defined(__x86_64__) )
152 __asm__ ( 152 __asm__ (
153 " movl %%ebx,%%edi\n" 153 " movl %%ebx,%%edi\n"
196 " movl %edi,%ebx\n" ); 196 " movl %edi,%ebx\n" );
197 #endif 197 #endif
198 return features; 198 return features;
199 } 199 }
200 200
201 static __inline__ int CPU_getCPUIDFeaturesExt() 201 static __inline__ int CPU_getCPUIDFeaturesExt(void)
202 { 202 {
203 int features = 0; 203 int features = 0;
204 #if defined(__GNUC__) && (defined(i386) || defined (__x86_64__) ) 204 #if defined(__GNUC__) && (defined(i386) || defined (__x86_64__) )
205 __asm__ ( 205 __asm__ (
206 " movl %%ebx,%%edi\n" 206 " movl %%ebx,%%edi\n"
247 ); 247 );
248 #endif 248 #endif
249 return features; 249 return features;
250 } 250 }
251 251
252 static __inline__ int CPU_haveRDTSC() 252 static __inline__ int CPU_haveRDTSC(void)
253 { 253 {
254 if ( CPU_haveCPUID() ) { 254 if ( CPU_haveCPUID() ) {
255 return (CPU_getCPUIDFeatures() & 0x00000010); 255 return (CPU_getCPUIDFeatures() & 0x00000010);
256 } 256 }
257 return 0; 257 return 0;
258 } 258 }
259 259
260 static __inline__ int CPU_haveMMX() 260 static __inline__ int CPU_haveMMX(void)
261 { 261 {
262 if ( CPU_haveCPUID() ) { 262 if ( CPU_haveCPUID() ) {
263 return (CPU_getCPUIDFeatures() & 0x00800000); 263 return (CPU_getCPUIDFeatures() & 0x00800000);
264 } 264 }
265 return 0; 265 return 0;
266 } 266 }
267 267
268 static __inline__ int CPU_haveMMXExt() 268 static __inline__ int CPU_haveMMXExt(void)
269 { 269 {
270 if ( CPU_haveCPUID() ) { 270 if ( CPU_haveCPUID() ) {
271 return (CPU_getCPUIDFeaturesExt() & 0x00400000); 271 return (CPU_getCPUIDFeaturesExt() & 0x00400000);
272 } 272 }
273 return 0; 273 return 0;
274 } 274 }
275 275
276 static __inline__ int CPU_have3DNow() 276 static __inline__ int CPU_have3DNow(void)
277 { 277 {
278 if ( CPU_haveCPUID() ) { 278 if ( CPU_haveCPUID() ) {
279 return (CPU_getCPUIDFeaturesExt() & 0x80000000); 279 return (CPU_getCPUIDFeaturesExt() & 0x80000000);
280 } 280 }
281 return 0; 281 return 0;
282 } 282 }
283 283
284 static __inline__ int CPU_have3DNowExt() 284 static __inline__ int CPU_have3DNowExt(void)
285 { 285 {
286 if ( CPU_haveCPUID() ) { 286 if ( CPU_haveCPUID() ) {
287 return (CPU_getCPUIDFeaturesExt() & 0x40000000); 287 return (CPU_getCPUIDFeaturesExt() & 0x40000000);
288 } 288 }
289 return 0; 289 return 0;
290 } 290 }
291 291
292 static __inline__ int CPU_haveSSE() 292 static __inline__ int CPU_haveSSE(void)
293 { 293 {
294 if ( CPU_haveCPUID() ) { 294 if ( CPU_haveCPUID() ) {
295 return (CPU_getCPUIDFeatures() & 0x02000000); 295 return (CPU_getCPUIDFeatures() & 0x02000000);
296 } 296 }
297 return 0; 297 return 0;
298 } 298 }
299 299
300 static __inline__ int CPU_haveSSE2() 300 static __inline__ int CPU_haveSSE2(void)
301 { 301 {
302 if ( CPU_haveCPUID() ) { 302 if ( CPU_haveCPUID() ) {
303 return (CPU_getCPUIDFeatures() & 0x04000000); 303 return (CPU_getCPUIDFeatures() & 0x04000000);
304 } 304 }
305 return 0; 305 return 0;
306 } 306 }
307 307
308 static __inline__ int CPU_haveAltiVec() 308 static __inline__ int CPU_haveAltiVec(void)
309 { 309 {
310 volatile int altivec = 0; 310 volatile int altivec = 0;
311 #ifdef __MACOSX__ 311 #ifdef __MACOSX__
312 int selectors[2] = { CTL_HW, HW_VECTORUNIT }; 312 int selectors[2] = { CTL_HW, HW_VECTORUNIT };
313 int hasVectorUnit = 0; 313 int hasVectorUnit = 0;
330 return altivec; 330 return altivec;
331 } 331 }
332 332
333 static Uint32 SDL_CPUFeatures = 0xFFFFFFFF; 333 static Uint32 SDL_CPUFeatures = 0xFFFFFFFF;
334 334
335 static Uint32 SDL_GetCPUFeatures() 335 static Uint32 SDL_GetCPUFeatures(void)
336 { 336 {
337 if ( SDL_CPUFeatures == 0xFFFFFFFF ) { 337 if ( SDL_CPUFeatures == 0xFFFFFFFF ) {
338 SDL_CPUFeatures = 0; 338 SDL_CPUFeatures = 0;
339 if ( CPU_haveRDTSC() ) { 339 if ( CPU_haveRDTSC() ) {
340 SDL_CPUFeatures |= CPU_HAS_RDTSC; 340 SDL_CPUFeatures |= CPU_HAS_RDTSC;
362 } 362 }
363 } 363 }
364 return SDL_CPUFeatures; 364 return SDL_CPUFeatures;
365 } 365 }
366 366
367 SDL_bool SDL_HasRDTSC() 367 SDL_bool SDL_HasRDTSC(void)
368 { 368 {
369 if ( SDL_GetCPUFeatures() & CPU_HAS_RDTSC ) { 369 if ( SDL_GetCPUFeatures() & CPU_HAS_RDTSC ) {
370 return SDL_TRUE; 370 return SDL_TRUE;
371 } 371 }
372 return SDL_FALSE; 372 return SDL_FALSE;
373 } 373 }
374 374
375 SDL_bool SDL_HasMMX() 375 SDL_bool SDL_HasMMX(void)
376 { 376 {
377 if ( SDL_GetCPUFeatures() & CPU_HAS_MMX ) { 377 if ( SDL_GetCPUFeatures() & CPU_HAS_MMX ) {
378 return SDL_TRUE; 378 return SDL_TRUE;
379 } 379 }
380 return SDL_FALSE; 380 return SDL_FALSE;
381 } 381 }
382 382
383 SDL_bool SDL_HasMMXExt() 383 SDL_bool SDL_HasMMXExt(void)
384 { 384 {
385 if ( SDL_GetCPUFeatures() & CPU_HAS_MMXEXT ) { 385 if ( SDL_GetCPUFeatures() & CPU_HAS_MMXEXT ) {
386 return SDL_TRUE; 386 return SDL_TRUE;
387 } 387 }
388 return SDL_FALSE; 388 return SDL_FALSE;
389 } 389 }
390 390
391 SDL_bool SDL_Has3DNow() 391 SDL_bool SDL_Has3DNow(void)
392 { 392 {
393 if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOW ) { 393 if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOW ) {
394 return SDL_TRUE; 394 return SDL_TRUE;
395 } 395 }
396 return SDL_FALSE; 396 return SDL_FALSE;
397 } 397 }
398 398
399 SDL_bool SDL_Has3DNowExt() 399 SDL_bool SDL_Has3DNowExt(void)
400 { 400 {
401 if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOWEXT ) { 401 if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOWEXT ) {
402 return SDL_TRUE; 402 return SDL_TRUE;
403 } 403 }
404 return SDL_FALSE; 404 return SDL_FALSE;
405 } 405 }
406 406
407 SDL_bool SDL_HasSSE() 407 SDL_bool SDL_HasSSE(void)
408 { 408 {
409 if ( SDL_GetCPUFeatures() & CPU_HAS_SSE ) { 409 if ( SDL_GetCPUFeatures() & CPU_HAS_SSE ) {
410 return SDL_TRUE; 410 return SDL_TRUE;
411 } 411 }
412 return SDL_FALSE; 412 return SDL_FALSE;
413 } 413 }
414 414
415 SDL_bool SDL_HasSSE2() 415 SDL_bool SDL_HasSSE2(void)
416 { 416 {
417 if ( SDL_GetCPUFeatures() & CPU_HAS_SSE2 ) { 417 if ( SDL_GetCPUFeatures() & CPU_HAS_SSE2 ) {
418 return SDL_TRUE; 418 return SDL_TRUE;
419 } 419 }
420 return SDL_FALSE; 420 return SDL_FALSE;
421 } 421 }
422 422
423 SDL_bool SDL_HasAltiVec() 423 SDL_bool SDL_HasAltiVec(void)
424 { 424 {
425 if ( SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC ) { 425 if ( SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC ) {
426 return SDL_TRUE; 426 return SDL_TRUE;
427 } 427 }
428 return SDL_FALSE; 428 return SDL_FALSE;