[ViewVC] Diff of: cebix/SheepShaver/src/Unix/sysdeps.h

Comparing SheepShaver/src/Unix/sysdeps.h (file contents):
Revision 1.3 by gbeauche, 2003-01-04T12:23:39Z vs.
Revision 1.8 by gbeauche, 2003-09-29T22:41:50Z

+# endif
+#endif
-<
+// Are we using a PPC emulator or the real thing?
-<
+#ifdef __powerpc__
-<
+#define EMULATED_PPC 0
-<
+#else
-<
+#define EMULATED_PPC 1
-<
+#endif
->
+// Define for external components
->
+#define SHEEPSHAVER 1
->
->
+// Mac and host address space are the same
->
+#define REAL_ADDRESSING 1
+#define POWERPC_ROM 1
-+
+#if EMULATED_PPC
-+
+// Handle interrupts asynchronously?
-+
+#define ASYNC_IRQ 0
-+
+// Mac ROM is write protected when banked memory is used
-+
+#if REAL_ADDRESSING || DIRECT_ADDRESSING
-+
+# define ROM_IS_WRITE_PROTECTED 0
-+
+# define USE_SCRATCHMEM_SUBTERFUGE 1
-+
+#else
-+
+# define ROM_IS_WRITE_PROTECTED 1
-+
+#endif
-+
+#else
-+
+// Mac ROM is write protected
-+
+#define ROM_IS_WRITE_PROTECTED 1
-+
+#define USE_SCRATCHMEM_SUBTERFUGE 0
-+
+#endif
-+
+// Data types
+typedef unsigned char uint8;
+typedef signed char int8;
+#error "Unsupported size of pointer"
+#endif
-+
+// Helper functions to byteswap data
-+
+#ifdef HAVE_BYTESWAP_H
-+
+#include <byteswap.h>
-+
+#endif
-+
-+
+#ifndef bswap_16
-+
+#define bswap_16 generic_bswap_16
-+
+#endif
-+
-+
+static inline uint16 generic_bswap_16(uint16 x)
-+
+{
-+
+  return ((x & 0xff) << 8) | ((x >> 8) & 0xff);
-+
+}
-+
-+
+#ifndef bswap_32
-+
+#define bswap_32 generic_bswap_32
-+
+#endif
-+
-+
+static inline uint32 generic_bswap_32(uint32 x)
-+
+{
-+
+  return (((x & 0xff000000) >> 24) |
-+
+                  ((x & 0x00ff0000) >>  8) |
-+
+                  ((x & 0x0000ff00) <<  8) |
-+
+                  ((x & 0x000000ff) << 24) );
-+
+}
-+
-+
+#ifndef bswap_64
-+
+#define bswap_64 generic_bswap_64
-+
+#endif
-+
-+
+static inline uint64 generic_bswap_64(uint64 x)
-+
+{
-+
+  return (((x & UVAL64(0xff00000000000000)) >> 56) |
-+
+                  ((x & UVAL64(0x00ff000000000000)) >> 40) |
-+
+                  ((x & UVAL64(0x0000ff0000000000)) >> 24) |
-+
+                  ((x & UVAL64(0x000000ff00000000)) >>  8) |
-+
+                  ((x & UVAL64(0x00000000ff000000)) <<  8) |
-+
+                  ((x & UVAL64(0x0000000000ff0000)) << 24) |
-+
+                  ((x & UVAL64(0x000000000000ff00)) << 40) |
-+
+                  ((x & UVAL64(0x00000000000000ff)) << 56) );
-+
+}
-+
-+
+#ifdef WORDS_BIGENDIAN
-+
+static inline uint16 tswap16(uint16 x) { return x; }
-+
+static inline uint32 tswap32(uint32 x) { return x; }
-+
+static inline uint64 tswap64(uint64 x) { return x; }
-+
+#else
-+
+static inline uint16 tswap16(uint16 x) { return bswap_16(x); }
-+
+static inline uint32 tswap32(uint32 x) { return bswap_32(x); }
-+
+static inline uint64 tswap64(uint64 x) { return bswap_64(x); }
-+
+#endif
-+
-+
+// spin locks
-+
+#ifdef __GNUC__
-+
-+
+#ifdef __powerpc__
-+
+#define HAVE_TEST_AND_SET 1
-+
+static inline int testandset(int *p)
-+
+{
-+
+        int ret;
-+
+        __asm__ __volatile__("0:    lwarx %0,0,%1 ;"
-+
+                                                 "      xor. %0,%3,%0;"
-+
+                                                 "      bne 1f;"
-+
+                                                 "      stwcx. %2,0,%1;"
-+
+                                                 "      bne- 0b;"
-+
+                                                 "1:    "
-+
+                                                 : "=&r" (ret)
-+
+                                                 : "r" (p), "r" (1), "r" (0)
-+
+                                                 : "cr0", "memory");
-+
+        return ret;
-+
+}
-+
+#endif
-+
-+
+#ifdef __i386__
-+
+#define HAVE_TEST_AND_SET 1
-+
+static inline int testandset(int *p)
-+
+{
-+
+        char ret;
-+
+        long int readval;
-+
-+
+        __asm__ __volatile__("lock; cmpxchgl %3, %1; sete %0"
-+
+                                                 : "=q" (ret), "=m" (*p), "=a" (readval)
-+
+                                                 : "r" (1), "m" (*p), "a" (0)
-+
+                                                 : "memory");
-+
+        return ret;
-+
+}
-+
+#endif
-+
-+
+#ifdef __s390__
-+
+#define HAVE_TEST_AND_SET 1
-+
+static inline int testandset(int *p)
-+
+{
-+
+        int ret;
-+
-+
+        __asm__ __volatile__("0: cs    %0,%1,0(%2)\n"
-+
+                                                 "   jl    0b"
-+
+                                                 : "=&d" (ret)
-+
+                                                 : "r" (1), "a" (p), "0" (*p)
-+
+                                                 : "cc", "memory" );
-+
+        return ret;
-+
+}
-+
+#endif
-+
-+
+#ifdef __alpha__
-+
+#define HAVE_TEST_AND_SET 1
-+
+static inline int testandset(int *p)
-+
+{
-+
+        int ret;
-+
+        unsigned long one;
-+
-+
+        __asm__ __volatile__("0:        mov 1,%2\n"
-+
+                                                 "      ldl_l %0,%1\n"
-+
+                                                 "      stl_c %2,%1\n"
-+
+                                                 "      beq %2,1f\n"
-+
+                                                 ".subsection 2\n"
-+
+                                                 "1:    br 0b\n"
-+
+                                                 ".previous"
-+
+                                                 : "=r" (ret), "=m" (*p), "=r" (one)
-+
+                                                 : "m" (*p));
-+
+        return ret;
-+
+}
-+
+#endif
-+
-+
+#ifdef __sparc__
-+
+#define HAVE_TEST_AND_SET 1
-+
+static inline int testandset(int *p)
-+
+{
-+
+        int ret;
-+
-+
+        __asm__ __volatile__("ldstub    [%1], %0"
-+
+                                                 : "=r" (ret)
-+
+                                                 : "r" (p)
-+
+                                                 : "memory");
-+
-+
+        return (ret ? 1 : 0);
-+
+}
-+
+#endif
-+
-+
+#ifdef __arm__
-+
+#define HAVE_TEST_AND_SET 1
-+
+static inline int testandset(int *p)
-+
+{
-+
+        register unsigned int ret;
-+
+        __asm__ __volatile__("swp %0, %1, [%2]"
-+
+                                                 : "=r"(ret)
-+
+                                                 : "0"(1), "r"(p));
-+
-+
+        return ret;
-+
+}
-+
+#endif
-+
-+
+#endif /* __GNUC__ */
-+
-+
+#if HAVE_TEST_AND_SET
-+
+#define HAVE_SPINLOCKS 1
-+
+typedef int spinlock_t;
-+
-+
+static const spinlock_t SPIN_LOCK_UNLOCKED = 0;
-+
-+
+static inline void spin_lock(spinlock_t *lock)
-+
+{
-+
+        while (testandset(lock));
-+
+}
-+
-+
+static inline void spin_unlock(spinlock_t *lock)
-+
+{
-+
+        *lock = 0;
-+
+}
-+
-+
+static inline int spin_trylock(spinlock_t *lock)
-+
+{
-+
+        return !testandset(lock);
-+
+}
-+
+#endif
-+
+// Time data type for Time Manager emulation
+#ifdef HAVE_CLOCK_GETTIME
+typedef struct timespec tm_time_t;

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing SheepShaver/src/Unix/sysdeps.h (file contents): Revision 1.3 by gbeauche, 2003-01-04T12:23:39Z vs. Revision 1.8 by gbeauche, 2003-09-29T22:41:50Z

Diff Legend

Comparing SheepShaver/src/Unix/sysdeps.h (file contents):
Revision 1.3 by gbeauche, 2003-01-04T12:23:39Z vs.
Revision 1.8 by gbeauche, 2003-09-29T22:41:50Z