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authorAndreas Jaeger <aj@suse.de>2012-03-28 16:39:25 +0200
committerAndreas Jaeger <aj@suse.de>2012-04-03 09:13:59 +0200
commitb1aa60f32d34030b28bca04aeee084cd3bedecfa (patch)
tree430b4c30f7a613b4b219528ec861de1b2c5b1172 /string
parent39c59c35723120c32dc42dde4115bba92305179f (diff)
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Add __bswap_64 definition for non GCC compilers.
[BZ#13926] Currently __bswap_64 is not defined at all for non-GCC compilers. Define it but guard it with __GLIBC_HAVE_LONG_LONG. endian.h uses __bswap_64, make the functions only available if __GLIBC_HAVE_LONG_LONG is defined.
Diffstat (limited to 'string')
-rw-r--r--string/byteswap.h6
-rw-r--r--string/endian.h23
2 files changed, 18 insertions, 11 deletions
diff --git a/string/byteswap.h b/string/byteswap.h
index 18ca95d..7d76957 100644
--- a/string/byteswap.h
+++ b/string/byteswap.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -18,6 +18,8 @@
#ifndef _BYTESWAP_H
#define _BYTESWAP_H 1
+#include <features.h>
+
/* Get the machine specific, optimized definitions. */
#include <bits/byteswap.h>
@@ -31,7 +33,7 @@
/* Return a value with all bytes in the 32 bit argument swapped. */
#define bswap_32(x) __bswap_32 (x)
-#if defined __GNUC__ && __GNUC__ >= 2
+#if __GLIBC_HAVE_LONG_LONG
/* Return a value with all bytes in the 64 bit argument swapped. */
# define bswap_64(x) __bswap_64 (x)
#endif
diff --git a/string/endian.h b/string/endian.h
index 13e8c75..0c293f6 100644
--- a/string/endian.h
+++ b/string/endian.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992, 1996, 1997, 2000, 2008 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -70,10 +70,13 @@
# define be32toh(x) __bswap_32 (x)
# define le32toh(x) (x)
-# define htobe64(x) __bswap_64 (x)
-# define htole64(x) (x)
-# define be64toh(x) __bswap_64 (x)
-# define le64toh(x) (x)
+# if __GLIBC_HAVE_LONG_LONG
+# define htobe64(x) __bswap_64 (x)
+# define htole64(x) (x)
+# define be64toh(x) __bswap_64 (x)
+# define le64toh(x) (x)
+# endif
+
# else
# define htobe16(x) (x)
# define htole16(x) __bswap_16 (x)
@@ -85,10 +88,12 @@
# define be32toh(x) (x)
# define le32toh(x) __bswap_32 (x)
-# define htobe64(x) (x)
-# define htole64(x) __bswap_64 (x)
-# define be64toh(x) (x)
-# define le64toh(x) __bswap_64 (x)
+# if __GLIBC_HAVE_LONG_LONG
+# define htobe64(x) (x)
+# define htole64(x) __bswap_64 (x)
+# define be64toh(x) (x)
+# define le64toh(x) __bswap_64 (x)
+# endif
# endif
#endif