[project @ 2002-11-13 12:21:08 by simonmar]

[ghc-hetmet.git] / ghc / rts / Storage.h

diff --git a/ghc/rts/Storage.h b/ghc/rts/Storage.h
index b6c3731..6a7c738 100644 (file)
--- a/ghc/rts/Storage.h
+++ b/ghc/rts/Storage.h
@@ -1,5 +1,5 @@
 /* -----------------------------------------------------------------------------
- * $Id: Storage.h,v 1.41 2002/02/14 17:21:50 sof Exp $
+ * $Id: Storage.h,v 1.45 2002/10/21 11:38:54 simonmar Exp $
  *
  * (c) The GHC Team, 1998-1999
  *
@@ -412,34 +412,32 @@ void printMutableList(generation *gen);
 
 
 #undef TEXT_BEFORE_HEAP
-#ifndef mingw32_TARGET_OS
+#if !defined(mingw32_TARGET_OS) && !defined(cygwin32_TARGET_OS)
 #define TEXT_BEFORE_HEAP 1
 #endif
 
 extern void* TEXT_SECTION_END_MARKER_DECL;
 extern void* DATA_SECTION_END_MARKER_DECL;
 
+#ifdef darwin_TARGET_OS
+extern unsigned long macho_etext;
+extern unsigned long macho_edata;
+#define IS_CODE_PTR(p) (  ((P_)(p) < (P_)macho_etext) \
+                       || is_dynamically_loaded_code_or_rodata_ptr((char *)p) )
+#define IS_DATA_PTR(p) ( ((P_)(p) >= (P_)macho_etext && \
+                          (P_)(p) < (P_)macho_edata) \
+                       || is_dynamically_loaded_rwdata_ptr((char *)p) )
+#define IS_USER_PTR(p) ( ((P_)(p) >= (P_)macho_edata) \
+                       && is_not_dynamically_loaded_ptr((char *)p) )
+#else
 /* Take into account code sections in dynamically loaded object files. */
 #define IS_DATA_PTR(p) ( ((P_)(p) >= (P_)&TEXT_SECTION_END_MARKER && \
                           (P_)(p) < (P_)&DATA_SECTION_END_MARKER) \
                        || is_dynamically_loaded_rwdata_ptr((char *)p) )
 #define IS_USER_PTR(p) ( ((P_)(p) >= (P_)&DATA_SECTION_END_MARKER) \
                        && is_not_dynamically_loaded_ptr((char *)p) )
-
-/* The HEAP_ALLOCED test below is called FOR EVERY SINGLE CLOSURE
- * during GC.  It needs to be FAST.
- *
- * BEWARE: when we're dynamically loading code (for GHCi), make sure
- * that we don't load any code above HEAP_BASE, or this test won't work.
- */
-#ifdef TEXT_BEFORE_HEAP
-# define HEAP_ALLOCED(x)  ((StgPtr)(x) >= (StgPtr)(HEAP_BASE))
-#else
-/* mingw, really */
-# define HEAP_ALLOCED(x)  (is_heap_alloced(x))
 #endif
 
-
 /* --------------------------------------------------------------------------
    Macros for distinguishing data pointers from code pointers
    --------------------------------------------------------------------------
@@ -539,9 +537,17 @@ extern void* DATA_SECTION_END_MARKER_DECL;
                      (MAX_INTLIKE-MIN_INTLIKE) * sizeof(StgIntCharlikeClosure)) )
 
 #define LOOKS_LIKE_STATIC_CLOSURE(r) (((*(((unsigned long *)(r))-1)) == 0) || IS_CHARLIKE_CLOSURE(r) || IS_INTLIKE_CLOSURE(r))
+
+#elif defined(darwin_TARGET_OS) && !defined(TABLES_NEXT_TO_CODE)
+
+#define LOOKS_LIKE_STATIC(r) (!(HEAP_ALLOCED(r)))
+#define LOOKS_LIKE_STATIC_CLOSURE(r) (IS_DATA_PTR(r) && !LOOKS_LIKE_GHC_INFO(r))
+
 #else
+
 #define LOOKS_LIKE_STATIC(r) IS_DATA_PTR(r)
 #define LOOKS_LIKE_STATIC_CLOSURE(r) IS_DATA_PTR(r)
+
 #endif
 
 
@@ -561,8 +567,13 @@ extern void* DATA_SECTION_END_MARKER_DECL;
 /* LOOKS_LIKE_GHC_INFO is called moderately often during GC, but
  * Certainly not as often as HEAP_ALLOCED.
  */
+#if defined(darwin_TARGET_OS) && !defined(TABLES_NEXT_TO_CODE)
+       /* Plan C, see above */
+#define LOOKS_LIKE_GHC_INFO(info) IS_CODE_PTR(((StgInfoTable *)info).entry)
+#else
 #define LOOKS_LIKE_GHC_INFO(info) (!HEAP_ALLOCED(info) \
                                    && !LOOKS_LIKE_STATIC_CLOSURE(info))
+#endif
 
 /* -----------------------------------------------------------------------------
    Macros for calculating how big a closure will be (used during allocation)