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/* |
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* sysdeps.h - System dependent definitions for Linux |
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* |
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* SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig |
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* SheepShaver (C) 1997-2005 Christian Bauer and Marc Hellwig |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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#include <assert.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <stddef.h> |
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#include <string.h> |
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#include <signal.h> |
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# endif |
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#endif |
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// Fix offsetof() on FreeBSD and GCC >= 3.4 |
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#if defined(__FreeBSD__) && defined(__cplusplus) |
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#undef offsetof |
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/* The cast to "char &" below avoids problems with user-defined |
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"operator &", which can appear in a POD type. */ |
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#define offsetof(TYPE, MEMBER) \ |
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(__offsetof__ (reinterpret_cast <size_t> \ |
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(&reinterpret_cast <char &> \ |
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(static_cast<TYPE *> (0)->MEMBER)))) |
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#endif |
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|
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// Define for external components |
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#define SHEEPSHAVER 1 |
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// Always use Real Addressing mode on native architectures |
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// Otherwise, use Direct Addressing mode if NATMEM_OFFSET is set |
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#if NATMEM_OFFSET == 0 || EMULATED_PPC == 0 |
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#if !defined(EMULATED_PPC) |
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#define REAL_ADDRESSING 1 |
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#else |
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#include "ppc_asm.tmpl" |
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#elif defined(__CYGWIN__) |
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#define DIRECT_ADDRESSING 1 |
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#define DIRECT_ADDRESSING_HACK 1 |
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/* |
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The following address translation functions were empirically |
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determined on a Windows XP system running Cygwin 1.5.12-1 so |
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that RAM size can be maximized (up to 960 MB) and avoiding |
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the use of a TLB. This also takes into account reduced address |
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space available when the Cygwin runtime is used. |
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*/ |
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#define DIRECT_ADDRESSING_VIRT2PHYS(ADDR) \ |
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((ADDR) + (((ADDR) < 0x41000000) ? 0x39000000 : 0xcf800000)) |
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#define DIRECT_ADDRESSING_PHYS2VIRT(ADDR) \ |
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((ADDR) - (((ADDR) >= 0x39000000) ? 0x39000000 : 0xcf800000)) |
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#elif defined(NATMEM_OFFSET) |
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#define DIRECT_ADDRESSING 1 |
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#else |
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#define REAL_ADDRESSING 1 |
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#endif |
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#define POWERPC_ROM 1 |
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} |
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#endif |
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/* FIXME: SheepShaver occasionnally hangs with those locks */ |
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#if 0 && (defined(__i386__) || defined(__x86_64__)) |
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#if defined(__i386__) || defined(__x86_64__) |
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#define HAVE_TEST_AND_SET 1 |
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static inline int testandset(volatile int *p) |
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{ |
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static const spinlock_t SPIN_LOCK_UNLOCKED = 0; |
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#if HAVE_TEST_AND_SET |
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#if defined(HAVE_TEST_AND_SET) && defined(HAVE_PTHREADS) |
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// There is nothing to lock if we are not in an multithreaded environment |
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#define HAVE_SPINLOCKS 1 |
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static inline void spin_lock(spinlock_t *lock) |
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{ |
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typedef struct timeval tm_time_t; |
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#endif |
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/* Define codes for all the float formats that we know of. |
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* Though we only handle IEEE format. */ |
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#define UNKNOWN_FLOAT_FORMAT 0 |
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#define IEEE_FLOAT_FORMAT 1 |
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#define VAX_FLOAT_FORMAT 2 |
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#define IBM_FLOAT_FORMAT 3 |
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#define C4X_FLOAT_FORMAT 4 |
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|
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// High-precision timing |
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#if defined(HAVE_PTHREADS) && defined(HAVE_CLOCK_NANOSLEEP) && 0 |
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#define PRECISE_TIMING 1 |
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#define PRECISE_TIMING_POSIX 1 |
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#endif |
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|
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// Timing functions |
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extern uint64 GetTicks_usec(void); |
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extern void Delay_usec(uint32 usec); |
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#if defined(HAVE_PTHREADS) || (defined(__linux__) && defined(__powerpc__)) |
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#ifdef HAVE_PTHREADS |
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// Setup pthread attributes |
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extern void Set_pthread_attr(pthread_attr_t *attr, int priority); |
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#endif |
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} rgb_color; |
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// X11 display fast locks |
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#ifdef HAVE_SPINLOCKS |
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#define X11_LOCK_TYPE spinlock_t |
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#define X11_LOCK_INIT SPIN_LOCK_UNLOCKED |
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#define XDisplayLock() spin_lock(&x_display_lock) |
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#define XDisplayUnlock() spin_unlock(&x_display_lock) |
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#elif defined(HAVE_PTHREADS) |
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#if defined(HAVE_PTHREADS) |
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#define X11_LOCK_TYPE pthread_mutex_t |
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#define X11_LOCK_INIT PTHREAD_MUTEX_INITIALIZER |
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#define XDisplayLock() pthread_mutex_lock(&x_display_lock); |
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#define XDisplayUnlock() pthread_mutex_unlock(&x_display_lock); |
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#elif defined(HAVE_SPINLOCKS) |
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#define X11_LOCK_TYPE spinlock_t |
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#define X11_LOCK_INIT SPIN_LOCK_UNLOCKED |
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#define XDisplayLock() spin_lock(&x_display_lock) |
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#define XDisplayUnlock() spin_unlock(&x_display_lock) |
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#else |
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#define XDisplayLock() |
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#define XDisplayUnlock() |
