Commit Graph

197 Commits

Author SHA1 Message Date
Andrew Thompson
6ff5e8a6e2 Prefix the static shl function with '__' like its parent function __qdivrem to
avoid being picked up by the DTrace fbt provider.

This is called by __udivdi3() for doing 64bit division on a 32bit arch and may
be called from within the dtrace context causing a double fault.
2008-10-09 20:43:42 +00:00
David E. O'Brien
ae72afe0f2 The kernel implemented 'memcmp' is an alias for 'bcmp'. However, memcmp
and bcmp are not the same thing.  'man bcmp' states that the return is
"non-zero" if the two byte strings are not identical.  Where as,
'man memcmp' states that the return is the "difference between the
first two differing bytes (treated as unsigned char values" if the
two byte strings are not identical.

So provide a proper memcmp(9), but it is a C implementation not a tuned
assembly implementation.  Therefore bcmp(9) should be preferred over memcmp(9).
2008-09-23 14:45:10 +00:00
Kip Macy
bbbc5bc1ee Add strcspn to libkern for use by xenbus routines. Will add to build
in separate commit.
2008-08-15 04:07:22 +00:00
Andrey A. Chernov
b834665cd5 Return arc4_i = arc4_j = 0; line from previous backing out since
just found it in OpenBSD, see their sys/crypto/arc4.c, function
rc4_keysetup, line ctx->x = ctx->y = 0;

Obtained from:  OpenBSD
2008-07-26 16:42:45 +00:00
Andrey A. Chernov
fff6495ea6 Per rwatson's request:
"If you don't get a review within a day or two, I would firmly recommend
backing out the changes"

back out all my changes as unreviewed by secteam@ yet.
2008-07-25 15:53:32 +00:00
Andrey A. Chernov
d16863efa6 1) Initialize arc4_i and arc4_j to 0 after key mixing as recommended in
draft-kaukonen-cipher-arcfour-03.txt (3.1.5)

2) Drop first 768 bytes as standard RC4-drop(768)
2008-07-22 16:16:51 +00:00
David E. O'Brien
1989184838 Match the implementation of the inline function from libkern.h. 2008-07-14 21:36:02 +00:00
Marcel Moolenaar
c2602b5b06 Add prototype for __cmpd2(). 2008-02-23 22:40:05 +00:00
Marcel Moolenaar
f7355c360b Bring back (without advertising clause) cmpdi2.c. It's needed on PowerPC
when the FP emulator is compiled-in.
2008-02-23 20:10:49 +00:00
Olivier Houchard
def35d2ca7 Do not use __XSCALE__ to detect if clz is available, use _ARM_ARCH_5 instead.
MFC After:	3 days
2007-10-13 12:05:36 +00:00
Bruce Evans
7df7fc34a3 Unbreak high resolution profiling a little: use dummy asms to prevent
timing loops being optimized away.

Once apon a time, gcc promised not to optimize away timing loops, but
gcc started optimizing away the call to a null function in the timing
loop here some time between gcc-3.3.3 and gcc-3.4.6, and it started
optimizing away the timing loop itself some time between gcc-3.4.6
and gcc-4.2.
2007-06-13 06:17:48 +00:00
Wojciech A. Koszek
f7caeade24 strchr() and strrchr() are already present in the kernel, but with less
popular names. Hence:

- comment current index() and rindex() functions, as these serve the same
  functionality as, respectively, strchr() and strrchr() from userland;
- add inlined version of strchr() and strrchr(), as we tend to use them more
  often;
- remove str[r]chr() definitions from ZFS code;

Reviewed by:	pjd
Approved by:	cognet (mentor)
2007-04-10 21:42:12 +00:00
Alexander Kabaev
c8c0ba192e Add local ptototype for memset function. 2007-04-06 00:06:26 +00:00
Alexander Kabaev
616db5f04c Add trivial MI memset function implementation. GCC mandates the
existence of this function as a linkable symbol in standalone
configurations and existing inline memcpy from libkern.h fails
this requirement.
2007-04-05 22:02:39 +00:00
Pawel Jakub Dawidek
73c0c41140 Add strstr() function to the libkern. 2006-08-12 15:28:39 +00:00
John Baldwin
67ab9fd759 First pass at removing Alpha kernel support. 2006-05-11 22:25:28 +00:00
Robert Watson
b059cbd3eb Convert function declarations to ANSI C.
MFC after:	1 week
2006-01-22 00:46:40 +00:00
Ruslan Ermilov
90ee1f3a04 Ignore spurious '\0' first character read on a serial console.
This allows me to "boot -a" over a serial console.  Tested on
several machines.
2006-01-14 20:45:02 +00:00
Robert Watson
5bb84bc84b Normalize a significant number of kernel malloc type names:
- Prefer '_' to ' ', as it results in more easily parsed results in
  memory monitoring tools such as vmstat.

- Remove punctuation that is incompatible with using memory type names
  as file names, such as '/' characters.

- Disambiguate some collisions by adding subsystem prefixes to some
  memory types.

- Generally prefer lower case to upper case.

- If the same type is defined in multiple architecture directories,
  attempt to use the same name in additional cases.

Not all instances were caught in this change, so more work is required to
finish this conversion.  Similar changes are required for UMA zone names.
2005-10-31 15:41:29 +00:00
Pawel Jakub Dawidek
24f8c87b41 Backout strtok() addition to libkern, strsep() is enough and strtok()
is not safe.

Discussed with:	stefanf, njl
2005-10-06 19:06:07 +00:00
Pawel Jakub Dawidek
5e66cbaeaf Add strtok() and strtok_r() function to libkern.
MFC after:	2 weeks
2005-10-06 11:10:09 +00:00
R. Imura
f373a82454 - Fix checking range of strings of struct iconv_add_in in libsmb and libkiconv,
- Add checking range of strings to iconv_sysctl_add().

Submitted by:	Rudolf Cejka
2005-08-24 12:38:26 +00:00
Pawel Jakub Dawidek
57169160b0 Ha! This is a very interesting bug.
I copied strcasecmp() from userland to the kernel and it didn't worked!
I started to debug the problem and I find out that this line:

	while (tolower(*us1) == tolower(*us2++)) {

was adding _3_ bytes to 'us2' pointer. Am I loosing my minds here?!...
No, in-kernel tolower() is a macro which uses its argument three times.
Bad tolower(9), no cookie.
2005-08-08 19:38:00 +00:00
Pawel Jakub Dawidek
c812ca43bd Add strcasecmp() and strncasecmp() to libkern and connect to the build. 2005-08-08 18:31:13 +00:00
R. Imura
8fa523fb95 Temporary restore a part of rev 1.6.
We must not increase a capability of buffer size here,
because codes which call these functions expect that dst and src
are the same size.
This will cause problem when someone convert a character whose
length is different between charsets on smbfs which was changed
to use xlat16 converter.
2005-07-23 16:52:57 +00:00
R. Imura
bf8ba9ab3a Fix kiconv on the 64bit plathomes.
- Correct idxp pointer to point the properly address of the
  each array of the kiconv character conversion tables,
  so that character conversion work properly when file
  systems are mounted with kiconv options.

- The definition of ICONV_CSMAXDATALEN was also bogus
  because it was defined as if all machines were 32bit
  computers.

Tested on:	amd64
MFC after:	1 month
2005-05-24 15:38:08 +00:00
Marcel Moolenaar
61d596a8ff Update comment to direct the reader to libkern.h instead of systm.h.
The functions were moved.

Pointed out by: johan@
2005-04-28 05:50:18 +00:00
Marcel Moolenaar
ee6bcf1223 Refactor the CRC-32 code to enhance its usability. Move the actual
CRC logic to a new function: crc32_raw() that obtains the initial
CRC value as well as leaves any post-processing to the caller. As
such, it can be used when the initial CRC value is not ~0U or when
the final CRC value does need to be inverted (bitwise). It also
means that crc32_raw() can be called repeatedly when the data is
not available as a single block, such as for scatter/gather lists
and the likes.

Avoid the additional call overhead incured by the refactoring by
moving the implementation off crc32() to sys/systm.h and making it
inlinable. Since crc32_raw() is itself trivial and since it may
be used in loops that iterate over fragments, having it available
for inlining can be beneficial. Hence, move its implementation
to sys/systm.h as well.

Keep the original implementation of crc32() in libkern/crc32.c for
documentation purposes (as a comment of course).

Triggered by: Jose M Rodriguez (josemi at freebsd dot jazztel dot es)
Discussed on: current@
Tested on: amd64, ia64 (BVO having GPT partitions)
Jargon file candidate: BVO = By Virtue Of :-)
2005-04-27 22:26:45 +00:00
David Schultz
f0ceb98f93 Replace the current strspn() and strcspn() with significantly faster
implementations inspired by the ones in DragonFly.  Unlike the
DragonFly versions, these have a small data cache footprint, and my
tests show that they're never slower than the old code except when the
charset or the span is 0 or 1 characters.  This implementation is
generally faster than DragonFly until either the charset or the span
gets in the ballpark of 32 to 64 characters.
2005-04-02 18:52:44 +00:00
Gleb Smirnoff
75737f3423 Add strspn() to libkern.
Ok'ed by:	rwatson
2005-02-10 20:39:39 +00:00
Ruslan Ermilov
27667f5821 MFlibc: Remove extra closing parenthesis. 2005-02-03 15:51:39 +00:00
Pawel Jakub Dawidek
f3830f0482 We do want to print '\n'/'\r'.
Pointed out by:	stefanf
2005-02-03 15:47:30 +00:00
Pawel Jakub Dawidek
6513f57682 'c' cannot be -1.
Submitted by:	stefanf
2005-02-03 15:23:27 +00:00
Pawel Jakub Dawidek
f627315f1e - Move gets() function to libkern (I want to use it outside vfs_mount.c).
- Add buffer size limitations (overflow will not be possible anymore).
- Add 'visible' option, which will allow for passphrase reading in the
  future.
- Remove special treatment of '@' and '#', those two are only confusing.

Discussed with:	rwatson
MFC after:	2 weeks
2005-02-03 15:10:58 +00:00
Robert Watson
dc66c5fe6f Because the argument to strvalid() is a size_t, use a size_t to iterate
over the array.

Submitted by:	stefanf
2005-01-29 13:34:22 +00:00
Robert Watson
debb2f87b6 Per permission from McAfee, remove clause 3 of the BSD license on
strvalid.c.
2005-01-29 13:04:04 +00:00
Warner Losh
d6ea02625f /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-07 00:24:33 +00:00
Olivier Houchard
2fd21813b0 Use the RET macro. 2004-11-09 16:47:47 +00:00
Olivier Houchard
ec98ae75da Implement ffs with clz for Xscale.
Idea taken from:	NetBSD
2004-11-07 16:53:29 +00:00
Olivier Houchard
fbaa643e9a Don't attempt to profile __udivsi3() and friends, as mcount() uses them. 2004-10-01 16:44:08 +00:00
Marcel Moolenaar
0f2fe153bc Move the kernel-specific logic to adjust frompc from MI to MD. For
these two reasons:
1. On ia64 a function pointer does not hold the address of the first
   instruction of a functions implementation. It holds the address
   of a function descriptor. Hence the user(), btrap(), eintr() and
   bintr() prototypes are wrong for getting the actual code address.
2. The logic forces interrupt, trap and exception entry points to
   be layed-out contiguously. This can not be achieved on ia64 and is
   generally just bad programming.

The MCOUNT_FROMPC_USER macro is used to set the frompc argument to
some kernel address which represents any frompc that falls outside
the kernel text range. The macro can expand to ~0U to bail out in
that case.
The MCOUNT_FROMPC_INTR macro is used to set the frompc argument to
some kernel address to represent a call to a trap or interrupt
handler. This to avoid that the trap or interrupt handler appear to
be called from everywhere in the call graph. The macro can expand
to ~0U to prevent adjusting frompc. Note that the argument is selfpc,
not frompc.

This commit defines the macros on all architectures equivalently to
the original code in sys/libkern/mcount.c. People can take it from
here...

Compile-tested on: alpha, amd64, i386, ia64 and sparc64
Boot-tested on: i386
2004-08-27 19:42:35 +00:00
Poul-Henning Kamp
3dfe213e61 Convert the vfsconf list to a TAILQ.
Introduce vfs_byname() function to find things on it.

Staticize vfs_nmount() function under the name vfs_donmount().

Various cleanups.
2004-07-27 22:32:01 +00:00
Gleb Smirnoff
b1e34c44ef Copy qsort_r(3) from libc to libkern.
Reviewed by:	phk
Approved by:	julian (mentor)
2004-07-15 23:58:23 +00:00
Olivier Houchard
03f110294b Import libkern arm specific bits. 2004-05-14 12:28:31 +00:00
Bruce Evans
c7e459ed6c Fixed some style bugs (unsorting of prototypes in previous commit, and
messes involving the idempotency guard).
2004-05-05 15:12:55 +00:00
Olivier Houchard
967f542177 Prototype __ashldi3(), __ashrdi3() and __lshrdi3(). 2004-05-04 22:15:54 +00:00
Warner Losh
f36cfd49ad Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson
2004-04-07 20:46:16 +00:00
Robert Drehmel
9fbb80baff Bring these files closer to style(9) conformance by comparing a
dereferenced character pointer to '\0' instead of using the ! operator.
2004-03-29 21:15:41 +00:00
Tom Rhodes
a122cca953 These are changes to allow to use the Intel C/C++ compiler (lang/icc)
to build the kernel. It doesn't affect the operation if gcc.

Most of the changes are just adding __INTEL_COMPILER to #ifdef's, as
icc v8 may define __GNUC__ some parts may look strange but are
necessary.

Additional changes:
 - in_cksum.[ch]:
   * use a generic C version instead of the assembly version in the !gcc
     case (ASM code breaks with the optimizations icc does)
     -> no bad checksums with an icc compiled kernel
     Help from:		andre, grehan, das
     Stolen from: 	alpha version via ppc version
     The entire checksum code should IMHO be replaced with the DragonFly
     version (because it isn't guaranteed future revisions of gcc will
     include similar optimizations) as in:
        ---snip---
          Revision  Changes    Path
          1.12      +1 -0      src/sys/conf/files.i386
          1.4       +142 -558  src/sys/i386/i386/in_cksum.c
          1.5       +33 -69    src/sys/i386/include/in_cksum.h
          1.5       +2 -0      src/sys/netinet/igmp.c
          1.6       +0 -1      src/sys/netinet/in.h
          1.6       +2 -0      src/sys/netinet/ip_icmp.c

          1.4       +3 -4      src/contrib/ipfilter/ip_compat.h
          1.3       +1 -2      src/sbin/natd/icmp.c
          1.4       +0 -1      src/sbin/natd/natd.c
          1.48      +1 -0      src/sys/conf/files
          1.2       +0 -1      src/sys/conf/files.amd64
          1.13      +0 -1      src/sys/conf/files.i386
          1.5       +0 -1      src/sys/conf/files.pc98
          1.7       +1 -1      src/sys/contrib/ipfilter/netinet/fil.c
          1.10      +2 -3      src/sys/contrib/ipfilter/netinet/ip_compat.h
          1.10      +1 -1      src/sys/contrib/ipfilter/netinet/ip_fil.c
          1.7       +1 -1      src/sys/dev/netif/txp/if_txp.c
          1.7       +1 -1      src/sys/net/ip_mroute/ip_mroute.c
          1.7       +1 -2      src/sys/net/ipfw/ip_fw2.c
          1.6       +1 -2      src/sys/netinet/igmp.c
          1.4       +158 -116  src/sys/netinet/in_cksum.c
          1.6       +1 -1      src/sys/netinet/ip_gre.c
          1.7       +1 -2      src/sys/netinet/ip_icmp.c
          1.10      +1 -1      src/sys/netinet/ip_input.c
          1.10      +1 -2      src/sys/netinet/ip_output.c
          1.13      +1 -2      src/sys/netinet/tcp_input.c
          1.9       +1 -2      src/sys/netinet/tcp_output.c
          1.10      +1 -1      src/sys/netinet/tcp_subr.c
          1.10      +1 -1      src/sys/netinet/tcp_syncache.c
          1.9       +1 -2      src/sys/netinet/udp_usrreq.c

          1.5       +1 -2      src/sys/netinet6/ipsec.c
          1.5       +1 -2      src/sys/netproto/ipsec/ipsec.c
          1.5       +1 -1      src/sys/netproto/ipsec/ipsec_input.c
          1.4       +1 -2      src/sys/netproto/ipsec/ipsec_output.c

          and finally remove
            sys/i386/i386        in_cksum.c
            sys/i386/include     in_cksum.h
        ---snip---
 - endian.h:
   * DTRT in C++ mode
 - quad.h:
   * we don't use gcc v1 anymore, remove support for it
   Suggested by:	bde (long ago)
 - assym.h:
   * avoid zero-length arrays (remove dependency on a gcc specific
     feature)
     This change changes the contents of the object file, but as it's
     only used to generate some values for a header, and the generator
     knows how to handle this, there's no impact in the gcc case.
   Explained by:	bde
   Submitted by:	Marius Strobl <marius@alchemy.franken.de>
 - aicasm.c:
   * minor change to teach it about the way icc spells "-nostdinc"
   Not approved by:	gibbs (no reply to my mail)
 - bump __FreeBSD_version (lang/icc needs to know about the changes)

Incarnations of this patch survive gcc compiles since a loooong time,
I use it on my desktop. An icc compiled kernel works since Nov. 2003
(exceptions: snd_* if used as modules), it survives a build of the
entire ports collection with icc.

Parts of this commit contains suggestions or submissions from
Marius Strobl <marius@alchemy.franken.de>.

Reviewed by:	-arch
Submitted by:	netchild
2004-03-12 21:45:33 +00:00
Peter Grehan
9a580b5e18 Remove register keyword and constify tmp values. This fixes
PPC compile warning - PPC is the only consumer of this code
path.
2004-02-12 03:23:13 +00:00