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-rw-r--r--libobjc/gc.c15
1 files changed, 3 insertions, 12 deletions
diff --git a/libobjc/gc.c b/libobjc/gc.c
index 8f13dbc33ca..66aa78a32ee 100644
--- a/libobjc/gc.c
+++ b/libobjc/gc.c
@@ -31,26 +31,17 @@ Boston, MA 02111-1307, USA. */
#include <assert.h>
#include <string.h>
+#include <stdlib.h>
#if OBJC_WITH_GC
#include <gc.h>
+#include <limits.h>
/* gc_typed.h uses the following but doesn't declare them */
typedef GC_word word;
typedef GC_signed_word signed_word;
-
-#if BITS_PER_WORD == 32
-# define LOGWL 5
-# define modWORDSZ(n) ((n) & 0x1f) /* n mod size of word */
-#endif
-
-#if BITS_PER_WORD == 64
-# define LOGWL 6
-# define modWORDSZ(n) ((n) & 0x3f) /* n mod size of word */
-#endif
-
-#define divWORDSZ(n) ((n) >> LOGWL) /* divide n by size of word */
+#define BITS_PER_WORD (CHAR_BIT * sizeof (word))
#include <gc_typed.h>
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