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authorUlrich Drepper <drepper@redhat.com>1998-08-22 07:55:20 +0000
committerUlrich Drepper <drepper@redhat.com>1998-08-22 07:55:20 +0000
commite86e2df1df22f19357bb32bda85f333b332f2c12 (patch)
treec66eff0c8d16224373e85f342a6ed62cd9d36186 /sysdeps/arm/bits
parent14a44a692041897082ff4f07be9e24ea512f45b2 (diff)
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Update.
1998-08-22 Philip Blundell <philb@gnu.org> * sysdeps/arm/bits/string.h: New file.
Diffstat (limited to 'sysdeps/arm/bits')
-rw-r--r--sysdeps/arm/bits/string.h150
1 files changed, 150 insertions, 0 deletions
diff --git a/sysdeps/arm/bits/string.h b/sysdeps/arm/bits/string.h
new file mode 100644
index 0000000..8dce456
--- /dev/null
+++ b/sysdeps/arm/bits/string.h
@@ -0,0 +1,150 @@
+/* Optimized, inlined string functions. ARM version.
+ Copyright (C) 1998 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
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _STRING_H
+# error "Never use <bits/string.h> directly; include <string.h> instead."
+#endif
+
+/* We must defeat the generic optimized versions of these functions in
+ <bits/string2.h> since they don't work on the ARM. */
+#define _HAVE_STRING_ARCH_strcpy 1
+#define _HAVE_STRING_ARCH_stpcpy 1
+
+/* We only provide optimizations if GNU CC is used and this is a little
+ endian system (the code below does not work on big endian machines).
+ With current versions of GCC these optimi\ations produce quite a large
+ amount of code so we only enable them if the user specifically asked
+ for it. */
+#if !defined __NO_STRING_INLINES && defined __GNUC__ && __GNUC__ >= 2 \
+ && !defined __ARMEB__ && defined __USE_STRING_INLINES
+
+/* Copy SRC to DEST. */
+#define strcpy(dest, src) \
+ (__extension__ (__builtin_constant_p (src) \
+ ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \
+ ? __strcpy_small (dest, src, strlen (src) + 1) \
+ : (char *) memcpy (dest, src, strlen (src) + 1)) \
+ : strcpy (dest, src)))
+
+#define __strcpy_small(dest, src, srclen) \
+ (__extension__ ({ char *__dest = (char *) (dest); \
+ const char *__src = (const char *) (src); \
+ size_t __srclen = (srclen); \
+ switch (__srclen) \
+ { \
+ case 5: \
+ *((unsigned long int *) __dest) = \
+ *((const unsigned long int *) (__src)); \
+ __dest += 4; \
+ __src += 4; \
+ case 1: \
+ *__dest++ = '\0'; \
+ break; \
+ case 6: \
+ *((unsigned long int *) __dest) = \
+ *((const unsigned long int *) (__src)); \
+ __dest += 4; \
+ __src += 4; \
+ case 2: \
+ *((unsigned short int *) __dest) = \
+ __src[0]; \
+ __dest += 2; \
+ break; \
+ case 7: \
+ *((unsigned long int *) __dest) = \
+ *((const unsigned long int *) (__src)); \
+ __dest += 4; \
+ __src += 4; \
+ case 3: \
+ *((unsigned short int *) __dest) = \
+ *((const unsigned short int *) (__src)); \
+ __dest[2] = '\0'; \
+ __dest += 3; \
+ break; \
+ case 8: \
+ *((unsigned long int *) __dest) = \
+ *((const unsigned long int *) (__src)); \
+ __dest += 4; \
+ __src += 4; \
+ case 4: \
+ *((unsigned long int *) __dest) = \
+ *((const unsigned short int *) (__src)) | \
+ (__src[2] << 16); \
+ __dest += 4; \
+ break; \
+ } \
+ (__dest - __srclen) ; }))
+
+/* Copy SRC to DEST, returning pointer to final NUL byte. */
+#define __stpcpy(dest, src) \
+ (__extension__ (__builtin_constant_p (src) \
+ ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \
+ ? __stpcpy_small (dest, src, strlen (src) + 1) \
+ : ((char *) __mempcpy (dest, src, strlen (src) + 1) - 1))\
+ : __stpcpy (dest, src)))
+
+#define __stpcpy_small(dest, src, srclen) \
+ (__extension__ ({ char *__dest = (char *) (dest); \
+ const char *__src = (const char *) (src); \
+ switch (srclen) \
+ { \
+ case 5: \
+ *((unsigned long int *) __dest) = \
+ *((const unsigned long int *) (__src)); \
+ __dest += 4; \
+ __src += 4; \
+ case 1: \
+ *__dest++ = '\0'; \
+ break; \
+ case 6: \
+ *((unsigned long int *) __dest) = \
+ *((const unsigned long int *) (__src)); \
+ __dest += 4; \
+ __src += 4; \
+ case 2: \
+ *((unsigned short int *) __dest) = \
+ __src[0]; \
+ __dest += 2; \
+ break; \
+ case 7: \
+ *((unsigned long int *) __dest) = \
+ *((const unsigned long int *) (__src)); \
+ __dest += 4; \
+ __src += 4; \
+ case 3: \
+ *((unsigned short int *) __dest) = \
+ *((const unsigned short int *) (__src)); \
+ __dest[2] = '\0'; \
+ __dest += 3; \
+ break; \
+ case 8: \
+ *((unsigned long int *) __dest) = \
+ *((const unsigned long int *) (__src)); \
+ __dest += 4; \
+ __src += 4; \
+ case 4: \
+ *((unsigned long int *) __dest) = \
+ *((const unsigned short int *) (__src)) | \
+ (__src[2] << 16); \
+ __dest += 4; \
+ break; \
+ } \
+ __dest; }))
+
+#endif