--- SheepShaver/src/Unix/sysdeps.h	2004/05/12 11:38:16	1.27
+++ SheepShaver/src/Unix/sysdeps.h	2004/11/22 22:40:26	1.35
@@ -66,14 +66,33 @@
 // Define for external components
 #define SHEEPSHAVER 1
 
-// Mac and host address space are the same
+// Always use Real Addressing mode on native architectures
+// Otherwise, use Direct Addressing mode if NATMEM_OFFSET is set
+#if !defined(EMULATED_PPC)
 #define REAL_ADDRESSING 1
+#elif defined(__CYGWIN__)
+#define DIRECT_ADDRESSING 1
+#define DIRECT_ADDRESSING_HACK 1
+/*
+  The following address translation functions were empirically
+  determined on a Windows XP system running Cygwin 1.5.12-1 so
+  that RAM size can be maximized (up to 960 MB) and avoiding
+  the use of a TLB. This also takes into account reduced address
+  space available when the Cygwin runtime is used.
+*/
+#define DIRECT_ADDRESSING_VIRT2PHYS(ADDR) \
+	((ADDR) + (((ADDR)  < 0x41000000) ? 0x39000000 : 0xcf800000))
+#define DIRECT_ADDRESSING_PHYS2VIRT(ADDR) \
+	((ADDR) - (((ADDR) >= 0x39000000) ? 0x39000000 : 0xcf800000))
+#elif defined(NATMEM_OFFSET)
+#define DIRECT_ADDRESSING 1
+#else
+#define REAL_ADDRESSING 1
+#endif
 
 #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
@@ -82,12 +101,21 @@
 # define ROM_IS_WRITE_PROTECTED 1
 #endif
 // Configure PowerPC emulator
-#define PPC_CHECK_INTERRUPTS (ASYNC_IRQ ? 0 : 1)
+#define PPC_REENTRANT_JIT 1
+#define PPC_CHECK_INTERRUPTS 1
 #define PPC_DECODE_CACHE 1
 #define PPC_FLIGHT_RECORDER 1
 #define PPC_PROFILE_COMPILE_TIME 0
 #define PPC_PROFILE_GENERIC_CALLS 0
 #define KPX_MAX_CPUS 1
+#if ENABLE_DYNGEN
+// Don't bother with predecode cache when using JIT
+#define PPC_ENABLE_JIT 1
+#undef  PPC_DECODE_CACHE
+#endif
+#if defined(__i386__)
+#define DYNGEN_ASM_OPTS 1
+#endif
 #else
 // Mac ROM is write protected
 #define ROM_IS_WRITE_PROTECTED 1
@@ -247,15 +275,15 @@ static inline int testandset(volatile in
 }
 #endif
 
-#ifdef __i386__
+/* FIXME: SheepShaver occasionnally hangs with those locks */
+#if 0 && (defined(__i386__) || defined(__x86_64__))
 #define HAVE_TEST_AND_SET 1
 static inline int testandset(volatile int *p)
 {
-	int ret;
-	long int readval;
+	long int ret;
 	/* Note: the "xchg" instruction does not need a "lock" prefix */
-	__asm__ __volatile__("xchgl %0, %1"
-						 : "=r" (ret), "=m" (*p), "=a" (readval)
+	__asm__ __volatile__("xchgl %k0, %1"
+						 : "=r" (ret), "=m" (*p)
 						 : "0" (1), "m" (*p)
 						 : "memory");
 	return ret;
@@ -327,12 +355,12 @@ static inline int testandset(volatile in
 
 #endif /* __GNUC__ */
 
-#if HAVE_TEST_AND_SET
-#define HAVE_SPINLOCKS 1
 typedef volatile int spinlock_t;
 
 static const spinlock_t SPIN_LOCK_UNLOCKED = 0;
 
+#if HAVE_TEST_AND_SET
+#define HAVE_SPINLOCKS 1
 static inline void spin_lock(spinlock_t *lock)
 {
 	while (testandset(lock));
@@ -347,6 +375,19 @@ static inline int spin_trylock(spinlock_
 {
 	return !testandset(lock);
 }
+#else
+static inline void spin_lock(spinlock_t *lock)
+{
+}
+
+static inline void spin_unlock(spinlock_t *lock)
+{
+}
+
+static inline int spin_trylock(spinlock_t *lock)
+{
+	return 1;
+}
 #endif
 
 // Time data type for Time Manager emulation
@@ -393,14 +434,14 @@ extern X11_LOCK_TYPE x_display_lock;
 #endif
 
 // Macro for calling MacOS routines
-#define CallMacOS(type, tvect) call_macos((uint32)tvect)
-#define CallMacOS1(type, tvect, arg1) call_macos1((uint32)tvect, (uint32)arg1)
-#define CallMacOS2(type, tvect, arg1, arg2) call_macos2((uint32)tvect, (uint32)arg1, (uint32)arg2)
-#define CallMacOS3(type, tvect, arg1, arg2, arg3) call_macos3((uint32)tvect, (uint32)arg1, (uint32)arg2, (uint32)arg3)
-#define CallMacOS4(type, tvect, arg1, arg2, arg3, arg4) call_macos4((uint32)tvect, (uint32)arg1, (uint32)arg2, (uint32)arg3, (uint32)arg4)
-#define CallMacOS5(type, tvect, arg1, arg2, arg3, arg4, arg5) call_macos5((uint32)tvect, (uint32)arg1, (uint32)arg2, (uint32)arg3, (uint32)arg4, (uint32)arg5)
-#define CallMacOS6(type, tvect, arg1, arg2, arg3, arg4, arg5, arg6) call_macos6((uint32)tvect, (uint32)arg1, (uint32)arg2, (uint32)arg3, (uint32)arg4, (uint32)arg5, (uint32)arg6)
-#define CallMacOS7(type, tvect, arg1, arg2, arg3, arg4, arg5, arg6, arg7) call_macos7((uint32)tvect, (uint32)arg1, (uint32)arg2, (uint32)arg3, (uint32)arg4, (uint32)arg5, (uint32)arg6, (uint32)arg7)
+#define CallMacOS(type, tvect) call_macos((uintptr)tvect)
+#define CallMacOS1(type, tvect, arg1) call_macos1((uintptr)tvect, (uintptr)arg1)
+#define CallMacOS2(type, tvect, arg1, arg2) call_macos2((uintptr)tvect, (uintptr)arg1, (uintptr)arg2)
+#define CallMacOS3(type, tvect, arg1, arg2, arg3) call_macos3((uintptr)tvect, (uintptr)arg1, (uintptr)arg2, (uintptr)arg3)
+#define CallMacOS4(type, tvect, arg1, arg2, arg3, arg4) call_macos4((uintptr)tvect, (uintptr)arg1, (uintptr)arg2, (uintptr)arg3, (uintptr)arg4)
+#define CallMacOS5(type, tvect, arg1, arg2, arg3, arg4, arg5) call_macos5((uintptr)tvect, (uintptr)arg1, (uintptr)arg2, (uintptr)arg3, (uintptr)arg4, (uintptr)arg5)
+#define CallMacOS6(type, tvect, arg1, arg2, arg3, arg4, arg5, arg6) call_macos6((uintptr)tvect, (uintptr)arg1, (uintptr)arg2, (uintptr)arg3, (uintptr)arg4, (uintptr)arg5, (uintptr)arg6)
+#define CallMacOS7(type, tvect, arg1, arg2, arg3, arg4, arg5, arg6, arg7) call_macos7((uintptr)tvect, (uintptr)arg1, (uintptr)arg2, (uintptr)arg3, (uintptr)arg4, (uintptr)arg5, (uintptr)arg6, (uintptr)arg7)
 
 #ifdef __cplusplus
 extern "C" {