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Comparing SheepShaver/src/Unix/sysdeps.h (file contents):
Revision 1.5 by gbeauche, 2003-09-07T14:19:25Z vs.
Revision 1.25 by gbeauche, 2004-02-25T22:02:59Z

# Line 1 | Line 1
1   /*
2   *  sysdeps.h - System dependent definitions for Linux
3   *
4 < *  SheepShaver (C) 1997-2002 Christian Bauer and Marc Hellwig
4 > *  SheepShaver (C) 1997-2004 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 44 | Line 44
44   #include <string.h>
45   #include <signal.h>
46  
47 + #ifdef HAVE_PTHREADS
48 + # include <pthread.h>
49 + #endif
50 +
51   #ifdef HAVE_FCNTL_H
52   # include <fcntl.h>
53   #endif
# Line 68 | Line 72
72   #define POWERPC_ROM 1
73  
74   #if EMULATED_PPC
75 + // Handle interrupts asynchronously?
76 + #define ASYNC_IRQ 0
77   // Mac ROM is write protected when banked memory is used
78   #if REAL_ADDRESSING || DIRECT_ADDRESSING
79   # define ROM_IS_WRITE_PROTECTED 0
# Line 75 | Line 81
81   #else
82   # define ROM_IS_WRITE_PROTECTED 1
83   #endif
84 + // Configure PowerPC emulator
85 + #define PPC_CHECK_INTERRUPTS (ASYNC_IRQ ? 0 : 1)
86 + #define PPC_DECODE_CACHE 1
87 + #define PPC_FLIGHT_RECORDER 1
88 + #define PPC_PROFILE_COMPILE_TIME 0
89 + #define PPC_PROFILE_GENERIC_CALLS 0
90 + #define KPX_MAX_CPUS 1
91   #else
92   // Mac ROM is write protected
93   #define ROM_IS_WRITE_PROTECTED 1
# Line 125 | Line 138 | typedef int64 intptr;
138   #error "Unsupported size of pointer"
139   #endif
140  
141 < // Helper functions to byteswap data
141 > /**
142 > *              Helper functions to byteswap data
143 > **/
144 >
145 > #if defined(__GNUC__)
146 > #if defined(__x86_64__) || defined(__i386__)
147 > // Linux/AMD64 currently has no asm optimized bswap_32() in <byteswap.h>
148 > #define opt_bswap_32 do_opt_bswap_32
149 > static inline uint32 do_opt_bswap_32(uint32 x)
150 > {
151 >  uint32 v;
152 >  __asm__ __volatile__ ("bswap %0" : "=r" (v) : "0" (x));
153 >  return v;
154 > }
155 > #endif
156 > #endif
157 >
158   #ifdef HAVE_BYTESWAP_H
159   #include <byteswap.h>
160   #endif
161  
162 + #ifdef  opt_bswap_16
163 + #undef  bswap_16
164 + #define bswap_16 opt_bswap_16
165 + #endif
166   #ifndef bswap_16
167   #define bswap_16 generic_bswap_16
168   #endif
# Line 139 | Line 172 | static inline uint16 generic_bswap_16(ui
172    return ((x & 0xff) << 8) | ((x >> 8) & 0xff);
173   }
174  
175 + #ifdef  opt_bswap_32
176 + #undef  bswap_32
177 + #define bswap_32 opt_bswap_32
178 + #endif
179   #ifndef bswap_32
180   #define bswap_32 generic_bswap_32
181   #endif
# Line 151 | Line 188 | static inline uint32 generic_bswap_32(ui
188                    ((x & 0x000000ff) << 24) );
189   }
190  
191 + #if defined(__i386__)
192 + #define opt_bswap_64 do_opt_bswap_64
193 + static inline uint64 do_opt_bswap_64(uint64 x)
194 + {
195 +  return (bswap_32(x >> 32) | (((uint64)bswap_32((uint32)x)) << 32));
196 + }
197 + #endif
198 +
199 + #ifdef  opt_bswap_64
200 + #undef  bswap_64
201 + #define bswap_64 opt_bswap_64
202 + #endif
203   #ifndef bswap_64
204   #define bswap_64 generic_bswap_64
205   #endif
# Line 177 | Line 226 | static inline uint32 tswap32(uint32 x) {
226   static inline uint64 tswap64(uint64 x) { return bswap_64(x); }
227   #endif
228  
229 + // spin locks
230 + #ifdef __GNUC__
231 +
232 + #if defined(__powerpc__) || defined(__ppc__)
233 + #define HAVE_TEST_AND_SET 1
234 + static inline int testandset(volatile int *p)
235 + {
236 +        int ret;
237 +        __asm__ __volatile__("0:    lwarx       %0,0,%1\n"
238 +                                                 "      xor.    %0,%3,%0\n"
239 +                                                 "      bne             1f\n"
240 +                                                 "      stwcx.  %2,0,%1\n"
241 +                                                 "      bne-    0b\n"
242 +                                                 "1:    "
243 +                                                 : "=&r" (ret)
244 +                                                 : "r" (p), "r" (1), "r" (0)
245 +                                                 : "cr0", "memory");
246 +        return ret;
247 + }
248 + #endif
249 +
250 + #ifdef __i386__
251 + #define HAVE_TEST_AND_SET 1
252 + static inline int testandset(volatile int *p)
253 + {
254 +        int ret;
255 +        long int readval;
256 +        /* Note: the "xchg" instruction does not need a "lock" prefix */
257 +        __asm__ __volatile__("xchgl %0, %1"
258 +                                                 : "=r" (ret), "=m" (*p), "=a" (readval)
259 +                                                 : "0" (1), "m" (*p)
260 +                                                 : "memory");
261 +        return ret;
262 + }
263 + #endif
264 +
265 + #ifdef __s390__
266 + #define HAVE_TEST_AND_SET 1
267 + static inline int testandset(volatile int *p)
268 + {
269 +        int ret;
270 +
271 +        __asm__ __volatile__("0: cs    %0,%1,0(%2)\n"
272 +                                                 "   jl    0b"
273 +                                                 : "=&d" (ret)
274 +                                                 : "r" (1), "a" (p), "0" (*p)
275 +                                                 : "cc", "memory" );
276 +        return ret;
277 + }
278 + #endif
279 +
280 + #ifdef __alpha__
281 + #define HAVE_TEST_AND_SET 1
282 + static inline int testandset(volatile int *p)
283 + {
284 +        int ret;
285 +        unsigned long one;
286 +
287 +        __asm__ __volatile__("0:        mov 1,%2\n"
288 +                                                 "      ldl_l %0,%1\n"
289 +                                                 "      stl_c %2,%1\n"
290 +                                                 "      beq %2,1f\n"
291 +                                                 ".subsection 2\n"
292 +                                                 "1:    br 0b\n"
293 +                                                 ".previous"
294 +                                                 : "=r" (ret), "=m" (*p), "=r" (one)
295 +                                                 : "m" (*p));
296 +        return ret;
297 + }
298 + #endif
299 +
300 + #ifdef __sparc__
301 + #define HAVE_TEST_AND_SET 1
302 + static inline int testandset(volatile int *p)
303 + {
304 +        int ret;
305 +
306 +        __asm__ __volatile__("ldstub    [%1], %0"
307 +                                                 : "=r" (ret)
308 +                                                 : "r" (p)
309 +                                                 : "memory");
310 +
311 +        return (ret ? 1 : 0);
312 + }
313 + #endif
314 +
315 + #ifdef __arm__
316 + #define HAVE_TEST_AND_SET 1
317 + static inline int testandset(volatile int *p)
318 + {
319 +        register unsigned int ret;
320 +        __asm__ __volatile__("swp %0, %1, [%2]"
321 +                                                 : "=r"(ret)
322 +                                                 : "0"(1), "r"(p));
323 +        
324 +        return ret;
325 + }
326 + #endif
327 +
328 + #endif /* __GNUC__ */
329 +
330 + #if HAVE_TEST_AND_SET
331 + #define HAVE_SPINLOCKS 1
332 + typedef volatile int spinlock_t;
333 +
334 + static const spinlock_t SPIN_LOCK_UNLOCKED = 0;
335 +
336 + static inline void spin_lock(spinlock_t *lock)
337 + {
338 +        while (testandset(lock));
339 + }
340 +
341 + static inline void spin_unlock(spinlock_t *lock)
342 + {
343 +        *lock = 0;
344 + }
345 +
346 + static inline int spin_trylock(spinlock_t *lock)
347 + {
348 +        return !testandset(lock);
349 + }
350 + #endif
351 +
352   // Time data type for Time Manager emulation
353   #ifdef HAVE_CLOCK_GETTIME
354   typedef struct timespec tm_time_t;
# Line 184 | Line 356 | typedef struct timespec tm_time_t;
356   typedef struct timeval tm_time_t;
357   #endif
358  
359 + // Timing functions
360 + extern uint64 GetTicks_usec(void);
361 + extern void Delay_usec(uint32 usec);
362 +
363 + #if defined(HAVE_PTHREADS) || (defined(__linux__) && defined(__powerpc__))
364   // Setup pthread attributes
365   extern void Set_pthread_attr(pthread_attr_t *attr, int priority);
366 + #endif
367  
368   // Various definitions
369   typedef struct rgb_color {
# Line 195 | Line 373 | typedef struct rgb_color {
373          uint8           alpha;
374   } rgb_color;
375  
376 + // X11 display fast locks
377 + #ifdef HAVE_SPINLOCKS
378 + #define X11_LOCK_TYPE spinlock_t
379 + #define X11_LOCK_INIT SPIN_LOCK_UNLOCKED
380 + #define XDisplayLock() spin_lock(&x_display_lock)
381 + #define XDisplayUnlock() spin_unlock(&x_display_lock)
382 + #elif defined(HAVE_PTHREADS)
383 + #define X11_LOCK_TYPE pthread_mutex_t
384 + #define X11_LOCK_INIT PTHREAD_MUTEX_INITIALIZER
385 + #define XDisplayLock() pthread_mutex_lock(&x_display_lock);
386 + #define XDisplayUnlock() pthread_mutex_unlock(&x_display_lock);
387 + #else
388 + #define XDisplayLock()
389 + #define XDisplayUnlock()
390 + #endif
391 + #ifdef X11_LOCK_TYPE
392 + extern X11_LOCK_TYPE x_display_lock;
393 + #endif
394 +
395   // Macro for calling MacOS routines
396   #define CallMacOS(type, tvect) call_macos((uint32)tvect)
397   #define CallMacOS1(type, tvect, arg1) call_macos1((uint32)tvect, (uint32)arg1)

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