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authorUlrich Drepper <drepper@redhat.com>1997-08-27 20:26:10 +0000
committerUlrich Drepper <drepper@redhat.com>1997-08-27 20:26:10 +0000
commit92f1da4da04a7a86ddee91be5eaf0b10c333ac64 (patch)
tree2a10ce9e4e407e7e5b5ca092ca0947d234b5ff60 /sysdeps/i386/i486/bits/string.h
parent22be878ecbc66606371bd33258f56e6711e6ba7a (diff)
1997-08-10 19:17 Philip Blundell <Philip.Blundell@pobox.com> * nss/nss_db/db-XXX.c: Include <db_185.h> not <db.h>. Somebody should update this to use the new db API. * nss/nss_db/db-netgrp.c: Likewise. * nss/nss_db/db-alias.c: Likewise. * db2/Makefile: Makefile for db-2.x in glibc. 1997-08-27 21:20 Ulrich Drepper <drepper@cygnus.com> * csu/Makefile (before-compile): New goal. Make sure abi-tag.h is generated. [$(elf)=yes] (asm-CPPFLAGS): Make sure abi-tag.h file can be found. * Makeconfig [$(build-omitfp)=yes] (CFLAGS-.o): Add -D__USE_STRING_INLINES. * string/string.f: Move strnlen optimization after inclusion of <bits/string.h>. Include <bits/string.h> only if __USE_STRING_INLINES is defined. * sysdeps/generic/memcpy.c: Undef memcpy to allow macro of this name in <bits/string.h>. * sysdeps/generic/memset.c: Likewise. * sysdeps/i386/string.h: i386 optimized string functions. * sysdeps/i386/i486string.h: i486+ optimized string functions. * Makefile (subdirs): Change db to db2. * shlib-versions: Bump libdb verion number to 3. * include/db.h: Include from db2 directory. * include/db_185.h: New file. * sysdeps/i386/Makefile [$(subdirs)=db2] (CPPFLAGS): Add macros to provide spinlock information for db2. * sysdeps/m68k/m68020/Makefile: New file. Likewise. * sysdeps/sparc/Makefile: New file. Likewise. * sysdeps/unix/sysv/linux/Makefile [$(subdirs)=db2] (CPPFLAGS): Add -DHAVE_LLSEEK. * db2/config.h: Hand-edited config file for db2 in glibc. * db2/compat.h: New file from db-2.3.4. * db2/db.h: Likewise. * db2/db_185.h: Likewise. * db2/db_int.h: Likewise. * db2/makedb.c: Likewise. * db2/btree/bt_close.c: Likewise. * db2/btree/bt_compare.c: Likewise. * db2/btree/bt_conv.c: Likewise. * db2/btree/bt_cursor.c: Likewise. * db2/btree/bt_delete.c: Likewise. * db2/btree/bt_open.c: Likewise. * db2/btree/bt_page.c: Likewise. * db2/btree/bt_put.c: Likewise. * db2/btree/bt_rec.c: Likewise. * db2/btree/bt_recno.c: Likewise. * db2/btree/btree_auto.c: Likewise. * db2/btree/bt_rsearch.c: Likewise. * db2/btree/bt_search.c: Likewise. * db2/btree/bt_split.c: Likewise. * db2/btree/bt_stat.c: Likewise. * db2/btree/btree.src: Likewise. * db2/common/db_appinit.c: Likewise. * db2/common/db_err.c: Likewise. * db2/common/db_byteorder.c: Likewise. * db2/common/db_apprec.c: Likewise. * db2/common/db_salloc.c: Likewise. * db2/common/db_log2.c: Likewise. * db2/common/db_region.c: Likewise. * db2/common/db_shash.c: Likewise. * db2/db/db.c: Likewise. * db2/db/db.src: Likewise. * db2/db/db_conv.c: Likewise. * db2/db/db_dispatch.c: Likewise. * db2/db/db_dup.c: Likewise. * db2/db/db_overflow.c: Likewise. * db2/db/db_pr.c: Likewise. * db2/db/db_rec.c: Likewise. * db2/db/db_ret.c: Likewise. * db2/db/db_thread.c: Likewise. * db2/db/db_auto.c: Likewise. * db2/db185/db185.c: Likewise. * db2/db185/db185_int.h: Likewise. * db2/dbm/dbm.c: Likewise. * db2/hash/hash.c: Likewise. * db2/hash/hash.src: Likewise. * db2/hash/hash_page.c: Likewise. * db2/hash/hash_conv.c: Likewise. * db2/hash/hash_debug.c: Likewise. * db2/hash/hash_stat.c: Likewise. * db2/hash/hash_rec.c: Likewise. * db2/hash/hash_dup.c: Likewise. * db2/hash/hash_func.c: Likewise. * db2/hash/hash_auto.c: Likewise. * db2/include/mp.h: Likewise. * db2/include/btree.h: Likewise. * db2/include/db.h.src: Likewise. * db2/include/db_int.h.src: Likewise. * db2/include/db_shash.h: Likewise. * db2/include/db_swap.h: Likewise. * db2/include/db_185.h.src: Likewise. * db2/include/txn.h: Likewise. * db2/include/db_am.h: Likewise. * db2/include/shqueue.h: Likewise. * db2/include/hash.h: Likewise. * db2/include/db_dispatch.h: Likewise. * db2/include/lock.h: Likewise. * db2/include/db_page.h: Likewise. * db2/include/log.h: Likewise. * db2/include/db_auto.h: Likewise. * db2/include/btree_auto.h: Likewise. * db2/include/hash_auto.h: Likewise. * db2/include/log_auto.h: Likewise. * db2/include/txn_auto.h: Likewise. * db2/include/db_ext.h: Likewise. * db2/include/btree_ext.h: Likewise. * db2/include/clib_ext.h: Likewise. * db2/include/common_ext.h: Likewise. * db2/include/hash_ext.h: Likewise. * db2/include/lock_ext.h: Likewise. * db2/include/log_ext.h: Likewise. * db2/include/mp_ext.h: Likewise. * db2/include/mutex_ext.h: Likewise. * db2/include/os_ext.h: Likewise. * db2/include/txn_ext.h: Likewise. * db2/include/cxx_int.h: Likewise. * db2/include/db_cxx.h: Likewise. * db2/include/queue.h: Likewise. * db2/lock/lock.c: Likewise. * db2/lock/lock_conflict.c: Likewise. * db2/lock/lock_util.c: Likewise. * db2/lock/lock_deadlock.c: Likewise. * db2/log/log.c: Likewise. * db2/log/log_get.c: Likewise. * db2/log/log.src: Likewise. * db2/log/log_compare.c: Likewise. * db2/log/log_put.c: Likewise. * db2/log/log_rec.c: Likewise. * db2/log/log_archive.c: Likewise. * db2/log/log_register.c: Likewise. * db2/log/log_auto.c: Likewise. * db2/log/log_findckp.c: Likewise. * db2/mp/mp_bh.c: Likewise. * db2/mp/mp_fget.c: Likewise. * db2/mp/mp_fopen.c: Likewise. * db2/mp/mp_fput.c: Likewise. * db2/mp/mp_fset.c: Likewise. * db2/mp/mp_open.c: Likewise. * db2/mp/mp_region.c: Likewise. * db2/mp/mp_pr.c: Likewise. * db2/mp/mp_sync.c: Likewise. * db2/mutex/68020.gcc: Likewise. * db2/mutex/mutex.c: Likewise. * db2/mutex/README: Likewise. * db2/mutex/x86.gcc: Likewise. * db2/mutex/sparc.gcc: Likewise. * db2/mutex/uts4.cc.s: Likewise. * db2/mutex/alpha.dec: Likewise. * db2/mutex/alpha.gcc: Likewise. * db2/mutex/parisc.gcc: Likewise. * db2/mutex/parisc.hp: Likewise. * db2/os/db_os_abs.c: Likewise. * db2/os/db_os_dir.c: Likewise. * db2/os/db_os_fid.c: Likewise. * db2/os/db_os_lseek.c: Likewise. * db2/os/db_os_mmap.c: Likewise. * db2/os/db_os_open.c: Likewise. * db2/os/db_os_rw.c: Likewise. * db2/os/db_os_sleep.c: Likewise. * db2/os/db_os_stat.c: Likewise. * db2/os/db_os_unlink.c: Likewise. * db2/txn/txn.c: Likewise. * db2/txn/txn.src: Likewise. * db2/txn/txn_rec.c: Likewise. * db2/txn/txn_auto.c: Likewise. * db2/clib/getlong.c: Likewise. * db2/progs/db_archive/db_archive.c: Likewise. * db2/progs/db_checkpoint/db_checkpoint.c: Likewise. * db2/progs/db_deadlock/db_deadlock.c: Likewise. * db2/progs/db_dump/db_dump.c: Likewise. * db2/progs/db_dump185/db_dump185.c: Likewise. * db2/progs/db_load/db_load.c: Likewise. * db2/progs/db_printlog/db_printlog.c: Likewise. * db2/progs/db_recover/db_recover.c: Likewise. * db2/progs/db_stat/db_stat.c: Likewise. * libio/stdio.h [__cplusplus] (__STDIO_INLINE): Define as inline. * po/de.po, po/sv.po: Update from 2.0.5 translations. * sysdeps/unix/sysv/linux/netinet/tcp.h: Pretty print. * sunrpc/rpc/xdr.h (XDR): Don't define argument of x_destroy callback as const. * sunrpc/xdr_mem.c (xdrmem_destroy): Don't define argument as const. * sunrpx/xdr_rec.c (xdrrec_destroy): Likewise. * sunrpx/xdr_stdio.c (xdrstdio_destroy): Likewise. 1997-08-27 18:47 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/if_index.c: Include <errno.h>. Reported by Benjamin Kosnik <bkoz@cygnus.com>. 1997-08-27 02:27 Roland McGrath <roland@baalperazim.frob.com> * abi-tags: New file. * csu/Makefile (distribute): Remove abi-tag.h. ($(objpfx)abi-tag.h): New target. * Makefile (distribute): Add abi-tags. * sysdeps/unix/sysv/linux/abi-tag.h: File removed. * sysdeps/mach/hurd/abi-tag.h: File removed. * sysdeps/stub/abi-tag.h: File removed. 1997-08-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/make-syscalls.sh: Change output so that it generates compilation rules only for the currently selected object suffixes. 1997-08-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/dl-machine.h (RTLD_START): Switch back to previous section to avoid confusing the compiler. * sysdeps/alpha/dl-machine.h (RTLD_START): Likewise. * sysdeps/i386/dl-machine.h (RTLD_START): Likewise. * sysdeps/mips/dl-machine.h (RTLD_START): Likewise. * sysdeps/mips/mips64/dl-machine.h (RTLD_START): Likewise. * sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise. * sysdeps/m68k/dl-machine.h (elf_machine_load_address): Use a GOT relocation instead of a constant to avoid text relocation. (ELF_MACHINE_BEFORE_RTLD_RELOC): Removed. (RTLD_START): Declare global labels as functions and add size directive. 1997-08-25 17:01 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/bits/select.h: Correct assembler versions to work even for descriptors >= 32. * stdlib/alloca.h: Don't define alloca to __alloca since if gcc is used __alloca is not defined to __builtin_alloca and so might not be available. Reported by Uwe Ohse <uwe@ohse.de>. * sysdeps/unix/sysv/linux/sys/sysmacros.h: Define macros in a special way if gcc is not used and so dev_t is an array. Reported by Uwe Ohse <uwe@ohse.de>. 1997-08-23 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/libc.texinfo: Reorder chapters to match logical order. 1997-08-25 12:22 Ulrich Drepper <drepper@cygnus.com> * sunrpc/rpc/xdr.h: Change name of parameters in prototypes of xdr_reference, xdrmem_create, and xdrstdio_create because of clash with g++ internal symbols. Patch by Sudish Joseph <sj@eng.mindspring.net>. * elf/dl-deps.c: Implement handling of DT_FILTER.
Diffstat (limited to 'sysdeps/i386/i486/bits/string.h')
-rw-r--r--sysdeps/i386/i486/bits/string.h853
1 files changed, 853 insertions, 0 deletions
diff --git a/sysdeps/i386/i486/bits/string.h b/sysdeps/i386/i486/bits/string.h
new file mode 100644
index 0000000000..f141bd50e1
--- /dev/null
+++ b/sysdeps/i386/i486/bits/string.h
@@ -0,0 +1,853 @@
+/* Optimized, inlined string functions. i486 version.
+ Copyright (C) 1997 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 only provide optimizations for the GNU CC. */
+#if defined __GNUC__ && __GNUC__ >= 2
+
+#ifdef __cplusplus
+# define __STRING_INLINE inline
+#else
+# define __STRING_INLINE extern __inline
+#endif
+
+
+/* Copy N bytes of SRC to DEST. */
+#define memcpy(dest, src, n) \
+ (__extension__ (__builtin_constant_p (n) \
+ ? __memcpy_c (dest, src, n) \
+ : __memcpy_g (dest, src, n)))
+#define __memcpy_c(dest, src, n) \
+ (((n) % 4 == 0) \
+ ? __memcpy_by4 (dest, src, n) \
+ : (((n) % 2 == 0) \
+ ? __memcpy_by2 (dest, src, n) \
+ : __memcpy_g (dest, src, n)))
+
+__STRING_INLINE void *
+__memcpy_by4 (void *__dest, __const void *__src, size_t __n)
+{
+ register void *__tmp = __dest;
+ register int __dummy1, __dummy2;
+ __asm__ __volatile__
+ ("1:\n\t"
+ "movl (%2),%0\n\t"
+ "leal 4(%2),%2\n\t"
+ "movl %0,(%1)\n\t"
+ "leal 4(%1),%1\n\t"
+ "decl %3\n\t"
+ "jnz 1b"
+ : "=r" (__dummy1), "=r" (__tmp), "=r" (__src), "=r" (__dummy2)
+ : "1" (__tmp), "2" (__src), "3" (__n / 4)
+ : "memory", "cc");
+ return __dest;
+}
+
+__STRING_INLINE void *
+__memcpy_by2 (void *__dest, __const void *__src, size_t __n)
+{
+ register void *__tmp = __dest;
+ register int __dummy1, __dummy2;
+ __asm__ __volatile__
+ ("shrl $1,%3\n\t"
+ "jz 2f\n" /* only a word */
+ "1:\n\t"
+ "movl (%2),%0\n\t"
+ "leal 4(%2),%2\n\t"
+ "movl %0,(%1)\n\t"
+ "leal 4(%1),%1\n\t"
+ "decl %3\n\t"
+ "jnz 1b\n"
+ "2:\n\t"
+ "movw (%2),%w0\n\t"
+ "movw %w0,(%1)"
+ : "=q" (__dummy1), "=r" (__tmp), "=r" (__src), "=r" (__dummy2)
+ : "1" (__tmp), "2" (__src), "3" (__n / 2)
+ : "memory", "cc");
+ return __dest;
+}
+
+__STRING_INLINE void *
+__memcpy_g (void *__dest, __const void *__src, size_t __n)
+{
+ register void *__tmp = __dest;
+ __asm__ __volatile__
+ ("cld\n\t"
+ "shrl $1,%%ecx\n\t"
+ "jnc 1f\n\t"
+ "movsb\n"
+ "1:\n\t"
+ "shrl $1,%%ecx\n\t"
+ "jnc 2f\n\t"
+ "movsw\n"
+ "2:\n\t"
+ "rep; movsl"
+ : /* no output */
+ : "c" (__n), "D" (__tmp),"S" (__src)
+ : "cx", "di", "si", "memory", "cc");
+ return __dest;
+}
+
+
+/* Copy N bytes of SRC to DEST, guaranteeing
+ correct behavior for overlapping strings. */
+__STRING_INLINE void *
+memmove (void *__dest, __const void *__src, size_t __n)
+{
+ register void *__tmp = __dest;
+ if (__dest < __src)
+ __asm__ __volatile__
+ ("cld\n\t"
+ "rep; movsb"
+ : /* no output */
+ : "c" (__n), "S" (__src), "D" (__tmp)
+ : "cx", "si", "di");
+ else
+ __asm__ __volatile__
+ ("std\n\t"
+ "rep; movsb\n\t"
+ "cld"
+ : /* no output */
+ : "c" (__n), "S" (__n - 1 + (__const char *) __src),
+ "D" (__n - 1 + (char *) __tmp)
+ : "cx", "si", "di", "memory");
+ return __dest;
+}
+
+
+/* Compare N bytes of S1 and S2. */
+#ifndef __PIC__
+/* gcc has problems to spill registers when using PIC. */
+__STRING_INLINE int
+memcmp (__const void *__s1, __const void *__s2, size_t __n)
+{
+ register int __res;
+ __asm__ __volatile__
+ ("cld\n\t"
+ "repe; cmpsb\n\t"
+ "je 1f\n\t"
+ "sbbl %0,%0\n\t"
+ "orb $1,%b0\n"
+ "1:"
+ : "=a" (__res)
+ : "0" (0), "S" (__s1), "D" (__s2), "c" (__n)
+ : "si", "di", "cx", "cc");
+ return __res;
+}
+#endif
+
+
+/* Set N bytes of S to C. */
+#define memset(s, c, n) \
+ (__extension__ (__builtin_constant_p (c) \
+ ? (__builtin_constant_p (n) \
+ ? __memset_cc (s, c, n) \
+ : __memset_cg (s, c, n)) \
+ : (__builtin_constant_p (n) \
+ ? __memset_gc (s, c, n) \
+ : __memset_gg (s, c, n))))
+#define __memset_cc(s, c, n) \
+ (((n) % 4 == 0) \
+ ? __memset_cc_by4 (s, c, n) \
+ : (((n) % 2== 0) \
+ ? __memset_cc_by2 (s, c, n) \
+ : __memset_cg (s, c, n)))
+#define __memset_gc(s, c, n) \
+ (((n) % 4== 0) \
+ ? __memset_gc_by4 (s, c, n) \
+ : (((n) % 2 == 0) \
+ ? __memset_gc_by2 (s, c, n) \
+ : __memset_gg (s, c, n)))
+
+__STRING_INLINE void *
+__memset_cc_by4 (void *__s, int __c, size_t __n)
+{
+ register char *__tmp = __s;
+ register int __dummy;
+ __asm__ __volatile__
+ ("1:\n\t"
+ "movl %2,(%0)\n\t"
+ "leal 4(%0),%0\n\t"
+ "decl %1\n\t"
+ "jnz 1b"
+ : "=r" (__tmp), "=r" (__dummy)
+ : "q" (0x01010101UL * (unsigned char) __c), "0" (__tmp), "1" (__n / 4)
+ : "memory", "cc");
+ return __s;
+}
+
+__STRING_INLINE void *
+__memset_cc_by2 (void *__s, char __c, size_t __n)
+{
+ register void *__tmp = __s;
+ register int __dummy;
+ __asm__ __volatile__
+ ("shrl $1,%1\n\t" /* may be divisible also by 4 */
+ "jz 2f\n"
+ "1:\n\t"
+ "movl %2,(%0)\n\t"
+ "leal 4(%0),%0\n\t"
+ "decl %1\n\t"
+ "jnz 1b\n"
+ "2:\n\t"
+ "movw %w2,(%0)"
+ : "=r" (__tmp), "=r" (__dummy)
+ : "q" (0x01010101UL * (unsigned char) __c), "0" (__tmp), "1" (__n / 2)
+ : "memory", "cc");
+ return __s;
+}
+
+__STRING_INLINE void *
+__memset_gc_by4 (void *__s, char __c, size_t __n)
+{
+ register void *__tmp = __s;
+ register int __dummy;
+ __asm__ __volatile__
+ ("movb %b0,%h0\n"
+ "pushw %w0\n\t"
+ "shll $16,%0\n\t"
+ "popw %w0\n"
+ "1:\n\t"
+ "movl %0,(%1)\n\t"
+ "addl $4,%1\n\t"
+ "decl %2\n\t"
+ "jnz 1b\n"
+ : "=q" (__c), "=r" (__tmp), "=r" (__dummy)
+ : "0" ((unsigned int) __c), "1" (__tmp), "2" (__n / 4)
+ : "memory", "cc");
+ return __s;
+}
+
+__STRING_INLINE void *
+__memset_gc_by2 (void *__s, char __c, size_t __n)
+{
+ register void *__tmp = __s;
+ register int __dummy1, __dummy2;
+ __asm__ __volatile__
+ ("movb %b0,%h0\n\t"
+ "shrl $1,%2\n\t" /* may be divisible also by 4 */
+ "jz 2f\n\t"
+ "pushw %w0\n\t"
+ "shll $16,%0\n\t"
+ "popw %w0\n"
+ "1:\n\t"
+ "movl %0,(%1)\n\t"
+ "leal 4(%1),%1\n\t"
+ "decl %2\n\t"
+ "jnz 1b\n"
+ "2:\n\t"
+ "movw %w0,(%1)"
+ : "=q" (__dummy1), "=r" (__tmp), "=r" (__dummy2)
+ : "0" ((unsigned int) __c), "1" (__tmp), "2" (__n / 2)
+ : "memory", "cc");
+ return __s;
+}
+
+__STRING_INLINE void *
+__memset_cg (void *__s, char __c, size_t __n)
+{
+ register void *__tmp = __s;
+ __asm__ __volatile__
+ ("shrl $1,%%ecx\n\t"
+ "rep; stosw\n\t"
+ "jnc 1f\n\t"
+ "movb %%al,(%%edi)\n"
+ "1:"
+ : /* no output */
+ : "c" (__n),"D" (__tmp), "a" (0x0101U * (unsigned char) __c)
+ : "cx", "di", "memory", "cc");
+ return __s;
+}
+
+__STRING_INLINE void *
+__memset_gg (void *__s, char __c, size_t __n)
+{
+ register void *__tmp = __s;
+ __asm__ __volatile__
+ ("movb %%al,%%ah\n\t"
+ "shrl $1,%%ecx\n\t"
+ "rep; stosw\n\t"
+ "jnc 1f\n\t"
+ "movb %%al,(%%edi)\n"
+ "1:"
+ : /* no output */
+ : "c" (__n), "D" (__tmp), "a" (__c)
+ : "cx", "di", "memory", "cc");
+ return __s;
+}
+
+
+/* Search N bytes of S for C. */
+__STRING_INLINE void *
+memchr (__const void *__s, int __c, size_t __n)
+{
+ register void *__res;
+ if (__n == 0)
+ return NULL;
+ __asm__ __volatile__
+ ("cld\n\t"
+ "repne; scasb\n\t"
+ "je 1f\n\t"
+ "movl $1,%0\n"
+ "1:\n\t"
+ "decl %0"
+ : "=D" (__res)
+ : "a" (__c), "D" (__s), "c" (__n)
+ : "cx", "cc");
+ return __res;
+}
+
+
+/* Return the length of S. */
+__STRING_INLINE size_t
+strlen (__const char *__str)
+{
+ register char __dummy;
+ register __const char *__tmp = __str;
+ __asm__ __volatile__
+ ("1:\n\t"
+ "movb (%0),%1\n\t"
+ "leal 1(%0),%0\n\t"
+ "testb %1,%1\n\t"
+ "jne 1b"
+ : "=r" (__tmp), "=q" (__dummy)
+ : "0" (__str)
+ : "memory", "cc" );
+ return __tmp - __str - 1;
+}
+
+
+/* Copy SRC to DEST. */
+__STRING_INLINE char *
+strcpy (char *__dest, __const char *__src)
+{
+ register char *__tmp = __dest;
+ register char __dummy;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "movb (%0),%2\n\t"
+ "incl %0\n\t"
+ "movb %2,(%1)\n\t"
+ "incl %1\n\t"
+ "testb %2,%2\n\t"
+ "jne 1b"
+ : "=r" (__src), "=r" (__tmp), "=q" (__dummy)
+ : "0" (__src), "1" (__tmp)
+ : "memory", "cc");
+ return __dest;
+}
+
+
+/* Copy no more than N characters of SRC to DEST. */
+__STRING_INLINE char *
+strncpy (char *__dest, __const char *__src, size_t __n)
+{
+ register char *__tmp = __dest;
+ register char __dummy;
+ if (__n > 0)
+ __asm__ __volatile__
+ ("1:\n\t"
+ "movb (%0),%2\n\t"
+ "incl %0\n\t"
+ "movb %2,(%1)\n\t"
+ "incl %1\n\t"
+ "decl %3\n\t"
+ "je 3f\n\t"
+ "testb %2,%2\n\t"
+ "jne 1b\n\t"
+ "2:\n\t"
+ "movb %2,(%1)\n\t"
+ "incl %1\n\t"
+ "decl %3\n\t"
+ "jne 2b\n\t"
+ "3:"
+ : "=r" (__src), "=r" (__tmp), "=q" (__dummy), "=r" (__n)
+ : "0" (__src), "1" (__tmp), "3" (__n)
+ : "memory", "cc");
+
+ return __dest;
+}
+
+
+/* Append SRC onto DEST. */
+__STRING_INLINE char *
+strcat (char *__dest, __const char *__src)
+{
+ register char *__tmp = __dest - 1;
+ register char __dummy;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "incl %1\n\t"
+ "cmpb $0,(%1)\n\t"
+ "jne 1b\n"
+ "2:\n\t"
+ "movb (%2),%b0\n\t"
+ "incl %2\n\t"
+ "movb %b0,(%1)\n\t"
+ "incl %1\n\t"
+ "testb %b0,%b0\n\t"
+ "jne 2b\n"
+ : "=q" (__dummy), "=r" (__tmp), "=r" (__src)
+ : "1" (__tmp), "2" (__src)
+ : "memory", "cc");
+ return __dest;
+}
+
+
+/* Append no more than N characters from SRC onto DEST. */
+__STRING_INLINE char *
+strncat (char *__dest, __const char *__src, size_t __n)
+{
+ register char *__tmp = __dest - 1;
+ register char __dummy;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "incl %1\n\t"
+ "cmpb $0,(%1)\n\t"
+ "jne 1b\n"
+ "2:\n\t"
+ "decl %3\n\t"
+ "js 3f\n\t"
+ "movb (%2),%b0\n\t"
+ "leal 1(%2),%2\n\t"
+ "movb %b0,(%1)\n\t"
+ "leal 1(%1),%1\n\t"
+ "testb %b0,%b0\n\t"
+ "jne 2b\n"
+ "3:\n\t"
+ "movb $0,(%1)\n\t"
+ : "=q" (__dummy), "=r" (__tmp), "=r" (__src), "=r" (__n)
+ : "1" (__tmp), "2" (__src), "3" (__n)
+ : "memory", "cc");
+ return __dest;
+}
+
+
+/* Compare S1 and S2. */
+__STRING_INLINE int
+strcmp (__const char *__s1, __const char *__s2)
+{
+ register int __res;
+ __asm__ __volatile__
+ ("1:\n\t"
+ "movb (%1),%b0\n\t"
+ "leal 1(%1),%1\n\t"
+ "cmpb %b0,(%2)\n\t"
+ "jne 2f\n\t"
+ "leal 1(%2),%2\n\t"
+ "testb %b0,%b0\n\t"
+ "jne 1b\n\t"
+ "xorl %0,%0\n\t"
+ "jmp 3f\n"
+ "2:\n\t"
+ "movl $1,%0\n\t"
+ "jb 3f\n\t"
+ "negl %0\n"
+ "3:"
+ : "=q" (__res), "=r" (__s1), "=r" (__s2)
+ : "1" (__s1), "2" (__s2)
+ : "cc");
+ return __res;
+}
+
+
+/* Compare N characters of S1 and S2. */
+__STRING_INLINE int
+strncmp (__const char *__s1, __const char *__s2, size_t __n)
+{
+ register int __res;
+ __asm__ __volatile__
+ ("1:\n\t"
+ "decl %3\n\t"
+ "js 2f\n\t"
+ "movb (%1),%b0\n\t"
+ "incl %1\n\t"
+ "cmpb %b0,(%2)\n\t"
+ "jne 3f\n\t"
+ "incl %2\n\t"
+ "testb %b0,%b0\n\t"
+ "jne 1b\n"
+ "2:\n\t"
+ "xorl %0,%0\n\t"
+ "jmp 4f\n"
+ "3:\n\t"
+ "movl $1,%0\n\t"
+ "jb 4f\n\t"
+ "negl %0\n"
+ "4:"
+ : "=q" (__res), "=r" (__s1), "=r" (__s2), "=r" (__n)
+ : "1" (__s1), "2" (__s2), "3" (__n)
+ : "cc");
+ return __res;
+}
+
+
+/* Find the first occurrence of C in S. */
+#define strchr(s, c) \
+ (__extension__ (__builtin_constant_p (c) \
+ ? __strchr_c (s, ((c) & 0xff) << 8) \
+ : __strchr_g (s, c)))
+
+__STRING_INLINE char *
+__strchr_g (__const char *__s, int __c)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("movb %%al,%%ah\n"
+ "1:\n\t"
+ "movb (%0),%%al\n\t"
+ "cmpb %%ah,%%al\n\t"
+ "je 2f\n\t"
+ "leal 1(%0),%0\n\t"
+ "testb %%al,%%al\n\t"
+ "jne 1b\n\t"
+ "xorl %0,%0\n"
+ "2:"
+ : "=r" (__res)
+ : "a" (__c), "0" (__s)
+ : "ax", "cc");
+ return __res;
+}
+
+__STRING_INLINE char *
+__strchr_c (__const char *__s, int __c)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("1:\n\t"
+ "movb (%0),%%al\n\t"
+ "cmpb %%ah,%%al\n\t"
+ "je 2f\n\t"
+ "leal 1(%0),%0\n\t"
+ "testb %%al,%%al\n\t"
+ "jne 1b\n\t"
+ "xorl %0,%0\n"
+ "2:"
+ : "=r" (__res)
+ : "a" (__c), "0" (__s)
+ : "ax", "cc");
+ return __res;
+}
+
+
+/* Find the last occurrence of C in S. */
+#define strrchr(s, c) \
+ (__extension__ (__builtin_constant_p (c) \
+ ? __strrchr_c (s, ((c) & 0xff) << 8) \
+ : __strrchr_g (s, c)))
+
+__STRING_INLINE char *
+__strrchr_g (__const char *__s, int __c)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("cld\n\t"
+ "movb %%al,%%ah\n"
+ "1:\n\t"
+ "lodsb\n\t"
+ "cmpb %%ah,%%al\n\t"
+ "jne 2f\n\t"
+ "leal -1(%%esi),%0\n"
+ "2:\n\t"
+ "testb %%al,%%al\n\t"
+ "jne 1b"
+ : "=d" (__res)
+ : "0" (0), "S" (__s),"a" (__c)
+ : "ax", "si", "cc");
+ return __res;
+}
+
+__STRING_INLINE char *
+__strrchr_c (__const char *__s, int __c)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("cld\n\t"
+ "1:\n\t"
+ "lodsb\n\t"
+ "cmpb %%ah,%%al\n\t"
+ "jne 2f\n\t"
+ "leal -1(%%esi),%0\n"
+ "2:\n\t"
+ "testb %%al,%%al\n\t"
+ "jne 1b"
+ : "=d" (__res)
+ : "0" (0), "S" (__s),"a" (__c)
+ : "ax", "si", "cc");
+ return __res;
+}
+
+
+/* Return the length of the initial segment of S which
+ consists entirely of characters not in REJECT. */
+#ifdef __PIC__
+__STRING_INLINE size_t
+strcspn (__const char *__s, __const char *__reject)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("push %%ebx\n\t"
+ "cld\n\t"
+ "movl %4,%%edi\n\t"
+ "repne; scasb\n\t"
+ "notl %%ecx\n\t"
+ "decl %%ecx\n\t"
+ "movl %%ecx,%%ebx\n"
+ "1:\n\t"
+ "lodsb\n\t"
+ "testb %%al,%%al\n\t"
+ "je 2f\n\t"
+ "movl %4,%%edi\n\t"
+ "movl %%ebx,%%ecx\n\t"
+ "repne; scasb\n\t"
+ "jne 1b\n"
+ "2:\n\t"
+ "popl %%ebx"
+ : "=S" (__res)
+ : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__reject)
+ : "ax", "cx", "di", "cc");
+ return (__res - 1) - __s;
+}
+#else
+__STRING_INLINE size_t
+strcspn (__const char *__s, __const char *__reject)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("cld\n\t"
+ "movl %4,%%edi\n\t"
+ "repne; scasb\n\t"
+ "notl %%ecx\n\t"
+ "decl %%ecx\n\t"
+ "movl %%ecx,%%edx\n"
+ "1:\n\t"
+ "lodsb\n\t"
+ "testb %%al,%%al\n\t"
+ "je 2f\n\t"
+ "movl %4,%%edi\n\t"
+ "movl %%edx,%%ecx\n\t"
+ "repne; scasb\n\t"
+ "jne 1b\n"
+ "2:"
+ : "=S" (__res)
+ : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__reject)
+ : "ax", "cx", "dx", "di", "cc");
+ return (__res - 1) - __s;
+}
+#endif
+
+
+/* Return the length of the initial segment of S which
+ consists entirely of characters in ACCEPT. */
+#ifdef __PIC__
+__STRING_INLINE size_t
+strspn (__const char *__s, __const char *__accept)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("pushl %%ebx\n\t"
+ "cld\n\t"
+ "movl %4,%%edi\n\t"
+ "repne; scasb\n\t"
+ "notl %%ecx\n\t"
+ "decl %%ecx\n\t"
+ "movl %%ecx,%%ebx\n"
+ "1:\n\t"
+ "lodsb\n\t"
+ "testb %%al,%%al\n\t"
+ "je 2f\n\t"
+ "movl %4,%%edi\n\t"
+ "movl %%ebx,%%ecx\n\t"
+ "repne; scasb\n\t"
+ "je 1b\n"
+ "2:\n\t"
+ "popl %%ebx"
+ : "=S" (__res)
+ : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__accept)
+ : "ax", "cx", "di", "cc");
+ return (__res - 1) - __s;
+}
+#else
+__STRING_INLINE size_t
+strspn (__const char *__s, __const char *__accept)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("cld\n\t"
+ "movl %4,%%edi\n\t"
+ "repne; scasb\n\t"
+ "notl %%ecx\n\t"
+ "decl %%ecx\n\t"
+ "movl %%ecx,%%edx\n"
+ "1:\n\t"
+ "lodsb\n\t"
+ "testb %%al,%%al\n\t"
+ "je 2f\n\t"
+ "movl %4,%%edi\n\t"
+ "movl %%edx,%%ecx\n\t"
+ "repne; scasb\n\t"
+ "je 1b\n"
+ "2:"
+ : "=S" (__res)
+ : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__accept)
+ : "ax", "cx", "dx", "di", "cc");
+ return (__res - 1) - __s;
+}
+#endif
+
+
+/* Find the first occurrence in S of any character in ACCEPT. */
+#ifdef __PIC__
+__STRING_INLINE char *
+strpbrk (__const char *__s, __const char *__accept)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("pushl %%ebx\n\t"
+ "cld\n\t"
+ "movl %4,%%edi\n\t"
+ "repne; scasb\n\t"
+ "notl %%ecx\n\t"
+ "decl %%ecx\n\t"
+ "movl %%ecx,%%ebx\n"
+ "1:\n\t"
+ "lodsb\n\t"
+ "testb %%al,%%al\n\t"
+ "je 2f\n\t"
+ "movl %4,%%edi\n\t"
+ "movl %%ebx,%%ecx\n\t"
+ "repne; scasb\n\t"
+ "jne 1b\n\t"
+ "decl %0\n\t"
+ "jmp 3f\n"
+ "2:\n\t"
+ "xorl %0,%0\n"
+ "3:\n\t"
+ "popl %%ebx"
+ : "=S" (__res)
+ : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__accept)
+ : "ax", "cx", "di", "cc");
+ return __res;
+}
+#else
+__STRING_INLINE char *
+strpbrk (__const char *__s, __const char *__accept)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("cld\n\t"
+ "movl %4,%%edi\n\t"
+ "repne; scasb\n\t"
+ "notl %%ecx\n\t"
+ "decl %%ecx\n\t"
+ "movl %%ecx,%%edx\n"
+ "1:\n\t"
+ "lodsb\n\t"
+ "testb %%al,%%al\n\t"
+ "je 2f\n\t"
+ "movl %4,%%edi\n\t"
+ "movl %%edx,%%ecx\n\t"
+ "repne; scasb\n\t"
+ "jne 1b\n\t"
+ "decl %0\n\t"
+ "jmp 3f\n"
+ "2:\n\t"
+ "xorl %0,%0\n"
+ "3:"
+ : "=S" (__res)
+ : "a" (0), "c" (0xffffffff), "0" (__s), "g" (__accept)
+ : "ax", "cx", "dx", "di", "cc");
+ return __res;
+}
+#endif
+
+
+/* Find the first occurrence of NEEDLE in HAYSTACK. */
+#ifdef __PIC__
+__STRING_INLINE char *
+strstr (__const char *__haystack, __const char *__needle)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("pushl %%ebx\n\t"
+ "cld\n\t" \
+ "movl %4,%%edi\n\t"
+ "repne; scasb\n\t"
+ "notl %%ecx\n\t"
+ "decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */
+ "movl %%ecx,%%ebx\n"
+ "1:\n\t"
+ "movl %4,%%edi\n\t"
+ "movl %%esi,%%eax\n\t"
+ "movl %%ebx,%%ecx\n\t"
+ "repe; cmpsb\n\t"
+ "je 2f\n\t" /* also works for empty string, see above */
+ "xchgl %%eax,%%esi\n\t"
+ "incl %%esi\n\t"
+ "cmpb $0,-1(%%eax)\n\t"
+ "jne 1b\n\t"
+ "xorl %%eax,%%eax\n\t"
+ "2:\n\t"
+ "popl %%ebx"
+ : "=a" (__res)
+ : "0" (0), "c" (0xffffffff), "S" (__haystack), "g" (__needle)
+ : "cx", "di", "si", "cc");
+ return __res;
+}
+#else
+__STRING_INLINE char *
+strstr (__const char *__haystack, __const char *__needle)
+{
+ register char *__res;
+ __asm__ __volatile__
+ ("cld\n\t" \
+ "movl %4,%%edi\n\t"
+ "repne; scasb\n\t"
+ "notl %%ecx\n\t"
+ "decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */
+ "movl %%ecx,%%edx\n"
+ "1:\n\t"
+ "movl %4,%%edi\n\t"
+ "movl %%esi,%%eax\n\t"
+ "movl %%edx,%%ecx\n\t"
+ "repe; cmpsb\n\t"
+ "je 2f\n\t" /* also works for empty string, see above */
+ "xchgl %%eax,%%esi\n\t"
+ "incl %%esi\n\t"
+ "cmpb $0,-1(%%eax)\n\t"
+ "jne 1b\n\t"
+ "xorl %%eax,%%eax\n\t"
+ "2:"
+ : "=a" (__res)
+ : "0" (0), "c" (0xffffffff), "S" (__haystack), "g" (__needle)
+ : "cx", "dx", "di", "si", "cc");
+ return __res;
+}
+#endif
+
+
+#undef __STRING_INLINE
+
+#endif /* GNU CC */