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authorUlrich Drepper <drepper@redhat.com>2008-05-15 02:54:33 +0000
committerUlrich Drepper <drepper@redhat.com>2008-05-15 02:54:33 +0000
commit2f9a1be867489eb4fdc46e052163eb3cab99aef1 (patch)
tree61ce5241b637ef45b048ea4fc0485847b127bfc7 /string
parentc8d49f05e7048f84bb8a60381c290f4831f3bd57 (diff)
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[BZ #6442]
* string/endian.h: Add macros for fixed-size endian conversion. * bits/byteswap.h: Allow inclusion from <endian.h>. * sysdeps/i386/bits/byteswap.h: Likewise. * sysdeps/ia64/bits/byteswap.h: Likewise. * sysdeps/s390/bits/byteswap.h: Likewise. * sysdeps/x86_64/bits/byteswap.h: Likewise. * string/Makefile (tests): Add tst-endian. * string/tst-endian.c: New file.
Diffstat (limited to 'string')
-rw-r--r--string/Makefile4
-rw-r--r--string/endian.h38
-rw-r--r--string/tst-endian.c112
3 files changed, 151 insertions, 3 deletions
diff --git a/string/Makefile b/string/Makefile
index d4ec224..ccdc497 100644
--- a/string/Makefile
+++ b/string/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991-2002, 2005, 2006, 2007 Free Software Foundation, Inc.
+# Copyright (C) 1991-2002, 2005-2007, 2008 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
@@ -54,7 +54,7 @@ tests := tester inl-tester noinl-tester testcopy test-ffs \
bug-strncat1 bug-strspn1 bug-strpbrk1 tst-bswap \
tst-strtok tst-strxfrm bug-strcoll1 tst-strfry \
bug-strtok1 $(addprefix test-,$(strop-tests)) \
- bug-envz1 tst-strxfrm2
+ bug-envz1 tst-strxfrm2 tst-endian
distribute := memcopy.h pagecopy.h tst-svc.expect test-string.h
diff --git a/string/endian.h b/string/endian.h
index 2f7bce1..430fb3a 100644
--- a/string/endian.h
+++ b/string/endian.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992, 1996, 1997, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1992, 1996, 1997, 2000, 2008 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
@@ -55,4 +55,40 @@
# define __LONG_LONG_PAIR(HI, LO) HI, LO
#endif
+
+/* Conversion interfaces. */
+#include <bits/byteswap.h>
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+# define htobe16(x) __bswap_16 (x)
+# define htole16(x) (x)
+# define be16toh(x) __bswap_16 (x)
+# define le16toh(x) (x)
+
+# define htobe32(x) __bswap_32 (x)
+# define htole32(x) (x)
+# 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)
+#else
+# define htobe16(x) (x)
+# define htole16(x) __bswap_16 (x)
+# define be16toh(x) (x)
+# define le16toh(x) __bswap_16 (x)
+
+# define htobe32(x) (x)
+# define htole32(x) __bswap_32 (x)
+# 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)
+#endif
+
#endif /* endian.h */
diff --git a/string/tst-endian.c b/string/tst-endian.c
new file mode 100644
index 0000000..c34dc45
--- /dev/null
+++ b/string/tst-endian.c
@@ -0,0 +1,112 @@
+#include <byteswap.h>
+#include <endian.h>
+#include <inttypes.h>
+#include <stdio.h>
+
+
+static int
+do_test (void)
+{
+ int result = 0;
+
+ for (uint64_t i = 0; i < (~UINT64_C (0)) >> 2; i = (i << 1) + 3)
+ {
+ if (i < UINT64_C (65536))
+ {
+ if (htobe16 (be16toh (i)) != i)
+ {
+ printf ("htobe16 (be16toh (%" PRIx64 ")) == %" PRIx16 "\n",
+ i, (uint16_t) htobe16 (be16toh (i)));
+ result = 1;
+ }
+ if (htole16 (le16toh (i)) != i)
+ {
+ printf ("htole16 (le16toh (%" PRIx64 ")) == %" PRIx16 "\n",
+ i, (uint16_t) htole16 (le16toh (i)));
+ result = 1;
+ }
+
+ uint16_t n[2];
+ n[__BYTE_ORDER == __LITTLE_ENDIAN] = bswap_16 (i);
+ n[__BYTE_ORDER == __BIG_ENDIAN] = i;
+ if (htole16 (i) != n[0])
+ {
+ printf ("htole16 (%" PRIx64 ") == %" PRIx16 " != %" PRIx16 "\n",
+ i, (uint16_t) htole16 (i), n[0]);
+ result = 1;
+ }
+ if (htobe16 (i) != n[1])
+ {
+ printf ("htobe16 (%" PRIx64 ") == %" PRIx16 " != %" PRIx16 "\n",
+ i, (uint16_t) htobe16 (i), n[1]);
+ result = 1;
+ }
+ }
+
+ if (i < UINT64_C (4294967296))
+ {
+ if (htobe32 (be32toh (i)) != i)
+ {
+ printf ("htobe32 (be32toh (%" PRIx64 ")) == %" PRIx32 "\n",
+ i, (uint32_t) htobe32 (be32toh (i)));
+ result = 1;
+ }
+ if (htole32 (le32toh (i)) != i)
+ {
+ printf ("htole32 (le32toh (%" PRIx64 ")) == %" PRIx32 "\n",
+ i, (uint32_t) htole32 (le32toh (i)));
+ result = 1;
+ }
+
+ uint32_t n[2];
+ n[__BYTE_ORDER == __LITTLE_ENDIAN] = bswap_32 (i);
+ n[__BYTE_ORDER == __BIG_ENDIAN] = i;
+ if (htole32 (i) != n[0])
+ {
+ printf ("htole32 (%" PRIx64 ") == %" PRIx32 " != %" PRIx32 "\n",
+ i, (uint32_t) htole32 (i), n[0]);
+ result = 1;
+ }
+ if (htobe32 (i) != n[1])
+ {
+ printf ("htobe32 (%" PRIx64 ") == %" PRIx32 " != %" PRIx32 "\n",
+ i, (uint32_t) htobe32 (i), n[1]);
+ result = 1;
+ }
+ }
+
+ if (htobe64 (be64toh (i)) != i)
+ {
+ printf ("htobe64 (be64toh (%" PRIx64 ")) == %" PRIx64 "\n",
+ i, htobe64 (be64toh (i)));
+ result = 1;
+ }
+ if (htole64 (le64toh (i)) != i)
+ {
+ printf ("htole64 (le64toh (%" PRIx64 ")) == %" PRIx64 "\n",
+ i, htole64 (le64toh (i)));
+ result = 1;
+ }
+
+ uint64_t n[2];
+ n[__BYTE_ORDER == __LITTLE_ENDIAN] = bswap_64 (i);
+ n[__BYTE_ORDER == __BIG_ENDIAN] = i;
+ if (htole64 (i) != n[0])
+ {
+ printf ("htole64 (%" PRIx64 ") == %" PRIx64 " != %" PRIx64 "\n",
+ i, htole64 (i), n[0]);
+ result = 1;
+ }
+ if (htobe64 (i) != n[1])
+ {
+ printf ("htobe64 (%" PRIx64 ") == %" PRIx64 " != %" PRIx64 "\n",
+ i, htobe64 (i), n[1]);
+ result = 1;
+ }
+ }
+
+ return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"