Commit Graph

43 Commits

Author SHA1 Message Date
Ed Schouten
19c262fe87 Change index() and rindex() to a weak alias.
This allows people to still write statically linked applications that
call strchr() or strrchr() and have a local variable or function called
index.

Discussed with:	bde@
2012-01-05 10:32:53 +00:00
Ed Schouten
46632c18bd Merge index() and strchr() together.
As I looked through the C library, I noticed the FreeBSD MIPS port has a
hand-written version of index(). This is nice, if it weren't for the
fact that most applications call strchr() instead.

Also, on the other architectures index() and strchr() are identical,
meaning we have two identical pieces of code in the C library and
statically linked applications.

Solve this by naming the actual file strchr.[cS] and let it use
__strong_reference()/STRONG_ALIAS() to provide the index() routine. Do
the same for rindex()/strrchr().

This seems to make the C libraries and static binaries slightly smaller,
but this reduction in size seems negligible.
2012-01-03 07:14:01 +00:00
Konstantin Belousov
adc6846785 Remove duplicate .note.GNU-stack section declaration. bcopy already
made the neccessary provisions.

Reported by:	arundel
2011-02-04 21:04:00 +00:00
Konstantin Belousov
93ab758670 Add section .note.GNU-stack for assembly files used by 386 and amd64. 2011-01-07 16:08:40 +00:00
Jilles Tjoelker
220856f376 libc: Remove the i386 assembler version of strlen(3).
On anything modern, the C version, which processes a word at a time, is much
faster. The Intel optimization manual explicitly warns against using REP
prefixes with SCAS or CMPS, which is exactly what the assembler version
does.

A simple test on a Phenom II showed the C version, compiled with -O2, to be
about twice as fast determining the length of 100000 strings between 0 and
255 bytes long.

MFC after:	2 weeks
2010-10-01 13:10:11 +00:00
Peter Wemm
ed820052d0 Add missing END() macros, as per rev 184547 for amd64. The lack of these
is mostly harmless, but it does upset some of valgrind's functionality.
2008-11-02 01:28:47 +00:00
Warner Losh
c879ae3536 Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.
2007-01-09 00:28:16 +00:00
Alan Cox
c0862430d5 Eliminate an unpredictable branch from bcmp().
Reviewed by: bde
2005-04-21 23:07:20 +00:00
Tim J. Robbins
799d93559b MFp4: Pentium/Athlon-optimised implementation of wcschr(). 2003-04-05 04:17:05 +00:00
Tim J. Robbins
564529ff1a MFp4: Pentium/Athlon-optimised implementation of wcslen(). 2003-03-14 11:01:12 +00:00
Tim J. Robbins
1609edca75 MFp4: Reduce code size by 26 bytes by only aligning the jump targets that
are at the top of loops.
2003-03-12 06:46:16 +00:00
Tim J. Robbins
34d4e9132c MFp4: Pentium/Athlon-optimised implementation of wmemchr(). 2003-03-12 03:55:01 +00:00
Tim J. Robbins
00d7d210f5 MFp4: Pentium-optimised implementation of wcscmp(). Performs significantly
better than the code generated by gcc in many cases.
2003-03-10 10:54:36 +00:00
Jens Schweikhardt
9d5abbddbf Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
Maxim Sobolev
f927dfabc9 Eliminate superfluous memory access in memcpy(3)/memmove(3).
Obtained from:	NetBSD
MFC after:	1 week
2002-10-15 09:50:07 +00:00
Mike Silbersack
11289efd80 Fix style bugs I added in last commit.
Spotted by:	bde
2002-06-27 14:16:21 +00:00
Mike Silbersack
1228a1c634 Modify bcopy (and memcpy/memmove) so that the length value is not
re-read from the stack mid copy.  This may help mitigate the recent
Apache buffer overrun and future overruns of the sort.

Reviewed by:	jdp
MFC after:	2 days
2002-06-27 03:55:36 +00:00
Jens Schweikhardt
21dc7d4f57 Fix typo in the BSD copyright: s/withough/without/
Spotted and suggested by:	des
MFC after:	3 weeks
2002-06-02 20:05:59 +00:00
David E. O'Brien
c04447ba03 Standardize on our SCM ID style. 2002-03-23 02:44:19 +00:00
Bill Fumerola
29ec623730 cosmetic: spell 'cashe' as 'cache' 2002-03-10 12:08:28 +00:00
Peter Wemm
e6d808aee3 De-orbit DEFS.h - the other arches do not use it, and it got replaced
with <machine/asm.h>.

Reviewed by:	bde
2001-10-24 20:29:14 +00:00
Ruslan Ermilov
8af1452cf8 Removed duplicate VCS ID tags, as per style(9). 2001-08-13 14:06:34 +00:00
Peter Wemm
7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
Bruce Evans
ae80efa54f Handle machine-dependent (m-d) (string) sources more automatically.
The names of m-d variants are now added (manually) to MDSRCS instead
of to SRCS, and the names of all machine-independent (m-i) variants
that can reasonably be replaced by an m-d variant are now added
(manually) to MISRCS instead of to SRCS, so that a simple substitution
can be used to discard the unused m-i variants.  MISRCS is potentially
all m-i sources, but the substitution is too simple to be fast, so
MISRCS should be kept reasonably small.

libc/Makefile.inc:
Do the substitution.

libc/i386/string/Makefile.inc:
Add to MDSRCS instead of to SRCS.  Add the names of all sources in this
directory, but no others.

libc/string/Makefile.inc
Add to MISRCS instead of to SRCS.  Add the names of all sources in this
directory.  Don't use (broken) explicit rules for special cases.
1997-10-16 13:46:50 +00:00
Peter Wemm
65b3003d2d kill the undead 1997-07-13 14:26:00 +00:00
Bruce Evans
362c392f0b This commit was generated by cvs2svn to compensate for changes in r27180,
which included commits to RCS files with non-trunk default branches.
1997-07-03 03:28:27 +00:00
Bruce Evans
5500fdcd4f Import Lite2's src/lib, except for non-i386 machine-dependent directories,
libc/db, libc/gen/crypt.* and libtelnet.  All affected files except 3
unimportant ones have already left the vendor branch.
1997-07-03 03:28:27 +00:00
Bruce Evans
e23b7f75de Use separate routines for memmove() and memcpy(). This lets me drop
the (buggy) support for alternative entry points.  ALTENTRY() was only
used for memmove().  Optimizing for space was particularly silly because
memcpy() is rarely used (gcc normally inlines it).
Obtained from:	NetBSD
1997-04-20 13:02:48 +00:00
Bruce Evans
8009c566df Use separate routines for memmove() and memcpy(). This lets me drop
the (buggy) support for alternative entry points.  ALTENTRY() was only
used for memmove().  Optimizing for space was particularly silly because
memcpy() is rarely used (gcc normally inlines it).

Obtained from:	NetBSD
1997-04-20 12:46:12 +00:00
Bruce Evans
1c33c5a76b Merged with the 1996/11/12 NetBSD version:
- use a slightly less bogus copyright.  This file was never contributed
  to Berkeley.  It still claims to be copright by the Regents.
- use <machine/asm.h> instead of "DEFS.h".
- use RCSID($Id$) instead of explicit assembly code and messy ifdefs.
  The rcsid won't be put into the object file until we make RCSID()
  non-null.  NetBSD uses a LIBC_SCCS ifdef here.  We used a LIBC_RCS
  instead, but I want RCSID() to be controlled directly by LIBC_RCS
  (actually by LIB_RCS).  This is the only difference with the NetBSD
  version.
- added ifdefs to support generation of memcpy() and memmove().  The
  other changes are "while I'm here" to get this.
- improved style of the copy backwards case.
1997-04-20 12:09:18 +00:00
Peter Wemm
662909a780 Import CSRG 4.4BSD-Lite2 lib/libc onto vendor branch 1997-03-11 11:29:42 +00:00
Peter Wemm
7e546392b5 Revert $FreeBSD$ to $Id$ 1997-02-22 15:12:41 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
Peter Wemm
6065a0be11 This commit was generated by cvs2svn to compensate for changes in r13122,
which included commits to RCS files with non-trunk default branches.
1995-12-30 19:02:48 +00:00
David Greenman
aacd7f348e Be smarter about handling overlapped copies and only go backwards if it
is really necessary. Going backwards on a P6 is much slower than forwards
and it's a little slower on a P5. Also moved the count mask and 'std'
down a few lines - it's a couple percent faster this way on a P5.
1995-12-27 18:47:45 +00:00
David Greenman
717d9cdd57 First round of changes to clean up the RCSID mess in libc:
1) Changed LIB_SCCS and SYSLIB_SCCS to LIB_RCS and SYSLIB_RCS.
2) Changed sccsid[] variables to rcsid[]
3) Moved all RCSID strings into .text
4) Converted all SCCSID's to RCS $Id$'s
5) Added missing $Id$'s after copyright.
1995-01-23 01:30:24 +00:00
David Greenman
530eb0c1c4 Added leaner and meaner swab() function by J.T. Conklin. 1995-01-22 21:36:15 +00:00
Bruce Evans
be0264b945 Fix a spelling error and add a comment about possible improvements. 1994-12-27 13:12:34 +00:00
David Greenman
7e20f2848c Go back to Bruce's fix with a minor change that will allow a NULL string
pointer if len is 0. I should have looked at the revision history - I would
have found that Bruce already fixed the bug with len=0 over a month ago.
Whoever said that the bug was in 2.0 was wrong.
1994-11-25 08:58:53 +00:00
David Greenman
40598ff428 Fixed bugs related to returning NULL if length is zero. 1994-11-25 04:11:19 +00:00
Bruce Evans
b5281b4b2a Fix memchr(p, 0, 0) to return NULL instead of p. 1994-10-27 11:36:11 +00:00
Garrett Wollman
2ceb2ce9ee First crack at making libc work with the new make macros. It compiles on
my machine, and a simple static (genassym) and shared (sysctl) executable
both work.  Still to be done: RPCand YP merge.
1994-08-05 01:19:12 +00:00
Rodney W. Grimes
58f0484fa2 BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00