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root/cebix/SheepShaver/src/Unix/sysdeps.h
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Comparing SheepShaver/src/Unix/sysdeps.h (file contents):
Revision 1.34 by gbeauche, 2004-11-13T14:09:16Z vs.
Revision 1.45 by gbeauche, 2005-06-30T13:29:43Z

# Line 1 | Line 1
1   /*
2   *  sysdeps.h - System dependent definitions for Linux
3   *
4 < *  SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig
4 > *  SheepShaver (C) 1997-2005 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 41 | Line 41
41   #include <assert.h>
42   #include <stdio.h>
43   #include <stdlib.h>
44 + #include <stddef.h>
45   #include <string.h>
46   #include <signal.h>
47  
# Line 63 | Line 64
64   # endif
65   #endif
66  
67 + // Fix offsetof() on FreeBSD and GCC >= 3.4
68 + #if defined(__FreeBSD__) && defined(__cplusplus)
69 + #undef offsetof
70 + /* The cast to "char &" below avoids problems with user-defined
71 +   "operator &", which can appear in a POD type.  */
72 + #define offsetof(TYPE, MEMBER)                          \
73 +  (__offsetof__ (reinterpret_cast <size_t>              \
74 +                 (&reinterpret_cast <char &>            \
75 +                  (static_cast<TYPE *> (0)->MEMBER))))
76 + #endif
77 +
78   // Define for external components
79   #define SHEEPSHAVER 1
80  
81   // Always use Real Addressing mode on native architectures
82   // Otherwise, use Direct Addressing mode if NATMEM_OFFSET is set
83 < #if NATMEM_OFFSET == 0 || EMULATED_PPC == 0
83 > #if !defined(EMULATED_PPC)
84   #define REAL_ADDRESSING 1
85 < #else
85 > #include "ppc_asm.tmpl"
86 > #elif defined(__CYGWIN__)
87 > #define DIRECT_ADDRESSING 1
88 > #define DIRECT_ADDRESSING_HACK 1
89 > /*
90 >  The following address translation functions were empirically
91 >  determined on a Windows XP system running Cygwin 1.5.12-1 so
92 >  that RAM size can be maximized (up to 960 MB) and avoiding
93 >  the use of a TLB. This also takes into account reduced address
94 >  space available when the Cygwin runtime is used.
95 > */
96 > #define DIRECT_ADDRESSING_VIRT2PHYS(ADDR) \
97 >        ((ADDR) + (((ADDR)  < 0x41000000) ? 0x39000000 : 0xcf800000))
98 > #define DIRECT_ADDRESSING_PHYS2VIRT(ADDR) \
99 >        ((ADDR) - (((ADDR) >= 0x39000000) ? 0x39000000 : 0xcf800000))
100 > #elif defined(NATMEM_OFFSET)
101   #define DIRECT_ADDRESSING 1
102 + #else
103 + #define REAL_ADDRESSING 1
104   #endif
105  
106   #define POWERPC_ROM 1
# Line 259 | Line 288 | static inline int testandset(volatile in
288   }
289   #endif
290  
291 < /* FIXME: SheepShaver occasionnally hangs with those locks */
263 < #if 0 && (defined(__i386__) || defined(__x86_64__))
291 > #if defined(__i386__) || defined(__x86_64__)
292   #define HAVE_TEST_AND_SET 1
293   static inline int testandset(volatile int *p)
294   {
# Line 343 | Line 371 | typedef volatile int spinlock_t;
371  
372   static const spinlock_t SPIN_LOCK_UNLOCKED = 0;
373  
374 < #if HAVE_TEST_AND_SET
374 > #if defined(HAVE_TEST_AND_SET) && defined(HAVE_PTHREADS)
375 > // There is nothing to lock if we are not in an multithreaded environment
376   #define HAVE_SPINLOCKS 1
377   static inline void spin_lock(spinlock_t *lock)
378   {
# Line 381 | Line 410 | typedef struct timespec tm_time_t;
410   typedef struct timeval tm_time_t;
411   #endif
412  
413 + /* Define codes for all the float formats that we know of.
414 + * Though we only handle IEEE format.  */
415 + #define UNKNOWN_FLOAT_FORMAT 0
416 + #define IEEE_FLOAT_FORMAT 1
417 + #define VAX_FLOAT_FORMAT 2
418 + #define IBM_FLOAT_FORMAT 3
419 + #define C4X_FLOAT_FORMAT 4
420 +
421 + // High-precision timing
422 + #if defined(HAVE_PTHREADS) && defined(HAVE_CLOCK_NANOSLEEP) && 0
423 + #define PRECISE_TIMING 1
424 + #define PRECISE_TIMING_POSIX 1
425 + #endif
426 +
427   // Timing functions
428   extern uint64 GetTicks_usec(void);
429   extern void Delay_usec(uint32 usec);
430  
431 < #if defined(HAVE_PTHREADS) || (defined(__linux__) && defined(__powerpc__))
431 > #ifdef HAVE_PTHREADS
432   // Setup pthread attributes
433   extern void Set_pthread_attr(pthread_attr_t *attr, int priority);
434   #endif
# Line 399 | Line 442 | typedef struct rgb_color {
442   } rgb_color;
443  
444   // X11 display fast locks
445 < #ifdef HAVE_SPINLOCKS
403 < #define X11_LOCK_TYPE spinlock_t
404 < #define X11_LOCK_INIT SPIN_LOCK_UNLOCKED
405 < #define XDisplayLock() spin_lock(&x_display_lock)
406 < #define XDisplayUnlock() spin_unlock(&x_display_lock)
407 < #elif defined(HAVE_PTHREADS)
445 > #if defined(HAVE_PTHREADS)
446   #define X11_LOCK_TYPE pthread_mutex_t
447   #define X11_LOCK_INIT PTHREAD_MUTEX_INITIALIZER
448   #define XDisplayLock() pthread_mutex_lock(&x_display_lock);
449   #define XDisplayUnlock() pthread_mutex_unlock(&x_display_lock);
450 + #elif defined(HAVE_SPINLOCKS)
451 + #define X11_LOCK_TYPE spinlock_t
452 + #define X11_LOCK_INIT SPIN_LOCK_UNLOCKED
453 + #define XDisplayLock() spin_lock(&x_display_lock)
454 + #define XDisplayUnlock() spin_unlock(&x_display_lock)
455   #else
456   #define XDisplayLock()
457   #define XDisplayUnlock()

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