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Comparing SheepShaver/src/Unix/sysdeps.h (file contents):
Revision 1.5 by gbeauche, 2003-09-07T14:19:25Z vs.
Revision 1.23 by gbeauche, 2004-01-26T13:52:31Z

# 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 68 | Line 68
68   #define POWERPC_ROM 1
69  
70   #if EMULATED_PPC
71 + // Handle interrupts asynchronously?
72 + #define ASYNC_IRQ 0
73   // Mac ROM is write protected when banked memory is used
74   #if REAL_ADDRESSING || DIRECT_ADDRESSING
75   # define ROM_IS_WRITE_PROTECTED 0
# Line 75 | Line 77
77   #else
78   # define ROM_IS_WRITE_PROTECTED 1
79   #endif
80 + // Configure PowerPC emulator
81 + #define PPC_CHECK_INTERRUPTS (ASYNC_IRQ ? 0 : 1)
82 + #define PPC_DECODE_CACHE 1
83 + #define PPC_FLIGHT_RECORDER 1
84 + #define PPC_PROFILE_COMPILE_TIME 0
85 + #define PPC_PROFILE_GENERIC_CALLS 0
86 + #define KPX_MAX_CPUS 1
87   #else
88   // Mac ROM is write protected
89   #define ROM_IS_WRITE_PROTECTED 1
# Line 125 | Line 134 | typedef int64 intptr;
134   #error "Unsupported size of pointer"
135   #endif
136  
137 < // Helper functions to byteswap data
137 > /**
138 > *              Helper functions to byteswap data
139 > **/
140 >
141 > #if defined(__GNUC__)
142 > #if defined(__x86_64__) || defined(__i386__)
143 > // Linux/AMD64 currently has no asm optimized bswap_32() in <byteswap.h>
144 > #define opt_bswap_32 do_opt_bswap_32
145 > static inline uint32 do_opt_bswap_32(uint32 x)
146 > {
147 >  uint32 v;
148 >  __asm__ __volatile__ ("bswap %0" : "=r" (v) : "0" (x));
149 >  return v;
150 > }
151 > #endif
152 > #endif
153 >
154   #ifdef HAVE_BYTESWAP_H
155   #include <byteswap.h>
156   #endif
157  
158 + #ifdef  opt_bswap_16
159 + #undef  bswap_16
160 + #define bswap_16 opt_bswap_16
161 + #endif
162   #ifndef bswap_16
163   #define bswap_16 generic_bswap_16
164   #endif
# Line 139 | Line 168 | static inline uint16 generic_bswap_16(ui
168    return ((x & 0xff) << 8) | ((x >> 8) & 0xff);
169   }
170  
171 + #ifdef  opt_bswap_32
172 + #undef  bswap_32
173 + #define bswap_32 opt_bswap_32
174 + #endif
175   #ifndef bswap_32
176   #define bswap_32 generic_bswap_32
177   #endif
# Line 151 | Line 184 | static inline uint32 generic_bswap_32(ui
184                    ((x & 0x000000ff) << 24) );
185   }
186  
187 + #if defined(__i386__)
188 + #define opt_bswap_64 do_opt_bswap_64
189 + static inline uint64 do_opt_bswap_64(uint64 x)
190 + {
191 +  return (bswap_32(x >> 32) | (((uint64)bswap_32((uint32)x)) << 32));
192 + }
193 + #endif
194 +
195 + #ifdef  opt_bswap_64
196 + #undef  bswap_64
197 + #define bswap_64 opt_bswap_64
198 + #endif
199   #ifndef bswap_64
200   #define bswap_64 generic_bswap_64
201   #endif
# Line 177 | Line 222 | static inline uint32 tswap32(uint32 x) {
222   static inline uint64 tswap64(uint64 x) { return bswap_64(x); }
223   #endif
224  
225 + // spin locks
226 + #ifdef __GNUC__
227 +
228 + #if defined(__powerpc__) || defined(__ppc__)
229 + #define HAVE_TEST_AND_SET 1
230 + static inline int testandset(volatile int *p)
231 + {
232 +        int ret;
233 +        __asm__ __volatile__("0:    lwarx       %0,0,%1\n"
234 +                                                 "      xor.    %0,%3,%0\n"
235 +                                                 "      bne             1f\n"
236 +                                                 "      stwcx.  %2,0,%1\n"
237 +                                                 "      bne-    0b\n"
238 +                                                 "1:    "
239 +                                                 : "=&r" (ret)
240 +                                                 : "r" (p), "r" (1), "r" (0)
241 +                                                 : "cr0", "memory");
242 +        return ret;
243 + }
244 + #endif
245 +
246 + #ifdef __i386__
247 + #define HAVE_TEST_AND_SET 1
248 + static inline int testandset(volatile int *p)
249 + {
250 +        int ret;
251 +        long int readval;
252 +        /* Note: the "xchg" instruction does not need a "lock" prefix */
253 +        __asm__ __volatile__("xchgl %0, %1"
254 +                                                 : "=r" (ret), "=m" (*p), "=a" (readval)
255 +                                                 : "0" (1), "m" (*p)
256 +                                                 : "memory");
257 +        return ret;
258 + }
259 + #endif
260 +
261 + #ifdef __s390__
262 + #define HAVE_TEST_AND_SET 1
263 + static inline int testandset(volatile int *p)
264 + {
265 +        int ret;
266 +
267 +        __asm__ __volatile__("0: cs    %0,%1,0(%2)\n"
268 +                                                 "   jl    0b"
269 +                                                 : "=&d" (ret)
270 +                                                 : "r" (1), "a" (p), "0" (*p)
271 +                                                 : "cc", "memory" );
272 +        return ret;
273 + }
274 + #endif
275 +
276 + #ifdef __alpha__
277 + #define HAVE_TEST_AND_SET 1
278 + static inline int testandset(volatile int *p)
279 + {
280 +        int ret;
281 +        unsigned long one;
282 +
283 +        __asm__ __volatile__("0:        mov 1,%2\n"
284 +                                                 "      ldl_l %0,%1\n"
285 +                                                 "      stl_c %2,%1\n"
286 +                                                 "      beq %2,1f\n"
287 +                                                 ".subsection 2\n"
288 +                                                 "1:    br 0b\n"
289 +                                                 ".previous"
290 +                                                 : "=r" (ret), "=m" (*p), "=r" (one)
291 +                                                 : "m" (*p));
292 +        return ret;
293 + }
294 + #endif
295 +
296 + #ifdef __sparc__
297 + #define HAVE_TEST_AND_SET 1
298 + static inline int testandset(volatile int *p)
299 + {
300 +        int ret;
301 +
302 +        __asm__ __volatile__("ldstub    [%1], %0"
303 +                                                 : "=r" (ret)
304 +                                                 : "r" (p)
305 +                                                 : "memory");
306 +
307 +        return (ret ? 1 : 0);
308 + }
309 + #endif
310 +
311 + #ifdef __arm__
312 + #define HAVE_TEST_AND_SET 1
313 + static inline int testandset(volatile int *p)
314 + {
315 +        register unsigned int ret;
316 +        __asm__ __volatile__("swp %0, %1, [%2]"
317 +                                                 : "=r"(ret)
318 +                                                 : "0"(1), "r"(p));
319 +        
320 +        return ret;
321 + }
322 + #endif
323 +
324 + #endif /* __GNUC__ */
325 +
326 + #if HAVE_TEST_AND_SET
327 + #define HAVE_SPINLOCKS 1
328 + typedef volatile int spinlock_t;
329 +
330 + static const spinlock_t SPIN_LOCK_UNLOCKED = 0;
331 +
332 + static inline void spin_lock(spinlock_t *lock)
333 + {
334 +        while (testandset(lock));
335 + }
336 +
337 + static inline void spin_unlock(spinlock_t *lock)
338 + {
339 +        *lock = 0;
340 + }
341 +
342 + static inline int spin_trylock(spinlock_t *lock)
343 + {
344 +        return !testandset(lock);
345 + }
346 + #endif
347 +
348   // Time data type for Time Manager emulation
349   #ifdef HAVE_CLOCK_GETTIME
350   typedef struct timespec tm_time_t;
# Line 184 | Line 352 | typedef struct timespec tm_time_t;
352   typedef struct timeval tm_time_t;
353   #endif
354  
355 + // Timing functions
356 + extern uint64 GetTicks_usec(void);
357 + extern void Delay_usec(uint32 usec);
358 +
359   // Setup pthread attributes
360   extern void Set_pthread_attr(pthread_attr_t *attr, int priority);
361  
# Line 195 | Line 367 | typedef struct rgb_color {
367          uint8           alpha;
368   } rgb_color;
369  
370 + // X11 display fast locks
371 + #ifdef HAVE_SPINLOCKS
372 + #define X11_LOCK_TYPE spinlock_t
373 + #define X11_LOCK_INIT SPIN_LOCK_UNLOCKED
374 + #define XDisplayLock() spin_lock(&x_display_lock)
375 + #define XDisplayUnlock() spin_unlock(&x_display_lock)
376 + #elif defined(HAVE_PTHREADS)
377 + #define X11_LOCK_TYPE pthread_mutex_t
378 + #define X11_LOCK_INIT PTHREAD_MUTEX_INITIALIZER
379 + #define XDisplayLock() pthread_mutex_lock(&x_display_lock);
380 + #define XDisplayUnlock() pthread_mutex_unlock(&x_display_lock);
381 + #else
382 + #define XDisplayLock()
383 + #define XDisplayUnlock()
384 + #endif
385 + #ifdef X11_LOCK_TYPE
386 + extern X11_LOCK_TYPE x_display_lock;
387 + #endif
388 +
389   // Macro for calling MacOS routines
390   #define CallMacOS(type, tvect) call_macos((uint32)tvect)
391   #define CallMacOS1(type, tvect, arg1) call_macos1((uint32)tvect, (uint32)arg1)

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