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1073 Commits

Author SHA1 Message Date
lukem
7ce35daccc Add '.SUFFIXES: .m4' here, now that <sys.mk> doesn't provide it anymore. 
It appears that .PATH.m4:  needs it.
Should fix problem noted in private mail by Markus W Kilbinger.
 2003-11-08 14:45:02 +00:00
jdolecek
3050a50d90 don't need bcmp() and bzero() 2003-11-08 07:40:37 +00:00
jdolecek
7cc19c4f27 no need for bcmp.c 2003-11-08 07:24:46 +00:00
dsl
7dbd0e094b Make 'dependall' generate dependencies in these libraries. 2003-11-07 23:34:28 +00:00
junyoung
dfb82ca484 rindex() shouldn't be used in the kernel. Use strrchr() instead. 2003-11-05 05:46:32 +00:00
jdolecek
c12a055f27 g/c index.c and rindex.c (not used anywhere) 2003-11-01 13:17:01 +00:00
he
202ba2bdcf Add a prototype for memset(). 2003-10-30 22:15:28 +00:00
mycroft
ab8cc2146b Don't try to build random.S on 68010. 2003-10-29 23:32:15 +00:00
mycroft
363f05d417 Refresh from libc to get 68010 version. 2003-10-29 23:19:11 +00:00
junyoung
592280de7a index() shouldn't be used in the kernel. Use strchr() instead. 2003-10-27 07:28:15 +00:00
junyoung
21110867b5 Goodbye to bcmp.S, bcopy.S, and bzero.S. They are defined as macros in 
sys/systm.h.
 2003-10-26 14:39:35 +00:00
junyoung
6fe2633df0 Remove bcmp.S and bzero.S from list. They were doing nothing but wasting 
kernel bits for a long time (2 years?).
 2003-10-26 14:37:52 +00:00
scw
2ffebceb85 Duh, fix the align-to-32-bits code. 2003-10-23 20:46:40 +00:00
he
91d100ed41 The paddr_t type is integral, so no longer compatible with NULL, 
so use 0 instead.
 2003-10-23 15:06:26 +00:00
tsutsui
fa49899d30 Add bswap64.c, required by options FFS_EI. 2003-10-21 14:49:00 +00:00
itohy
faf6cfae4c Rename local variables read' to nread' to shut up -Wshadow. 2003-10-18 06:39:12 +00:00
scw
5e7e19ec12 Xscale-optimised mem* functions, contributed by Wasabi Systems. 
(Note: memcmp/memset improvements also benefit non-Xscale).

memcmp()  - Compare 32-bits at a time if possible. Special-case 6-byte
            comparisons, for the benefit of the network stack.

memset()  - More loop unrolling, plus use of 'strd' instruction,
            results in > 100% speedup on Xscale.

memcpy()  - Big-endian support, unrolled loops, 'strd/ldrd/pld', plus
            special-cases for very common length/alignment combinations
            (at least in the kernel). Benchmarks show ~50% improvment on
            Xscale.

memmove() - Big-endian support. Use fast memcpy(), above, if the regions
            don't overlap. Otherwise unchanged.
 2003-10-13 19:59:24 +00:00
chs
06332c88ef update for new gas syntax. from Jochen Kunz. 2003-10-10 15:07:43 +00:00
ichiro
266021fa1e big endian support 
thanks to smi@sm.sony.co.jp
 2003-10-09 08:54:54 +00:00
lukem
1ea85577bc sort entries, and add a couple 2003-10-08 04:13:13 +00:00
itojun
cc76a8982b fix build for bootloaders (no /usr/include/sys/kernel.h any more). 2003-10-02 10:39:27 +00:00
martin
1f68fd5144 Same treatment as libc/hash/sha1.c: ifdef the sparc64 compiler bug 
workaround for old gcc only.
 2003-09-23 20:00:43 +00:00
chs
0454ead77f the asm version of strlcpy() was buggy, just use the C version. 2003-09-11 05:04:33 +00:00
he
9ac0a9ed26 Um, undo last; libsa printf doesn't do %z. 2003-09-04 12:02:10 +00:00
he
bd42895755 Use the %zu format for size_t printing instead of cast + %lu. 2003-09-04 11:42:52 +00:00
he
022f01cef7 Cast size_t to u_long before printing, and use %lu instead of %d as format. 
Fixes compilation on alpha.
 2003-09-03 12:43:41 +00:00
dsl
fafabf93cc Another attempt to get libsa to contain the right things. 
- put a 'standards conforming' memcmp into memcmp.c
- make bcmp be a second label on the same code
- make bcmp.c be just #include "memcmp.c"
This means that libsa.o might contain both a memcmp.o and a bcmp.o, but
both contain the same code (defining both symbols) so it doesn't matter
which ld uses.
Saves worrying about which of bcmp.c and memcmp.c the architecture specific
Makefile requests.
 2003-09-01 12:28:03 +00:00
fvdl
60ae17c7ae Fix signed/unsigned warnings. 2003-08-31 22:40:13 +00:00
chs
6e0aaa640d update for LWPs, and some lite cleanup. 2003-08-31 01:52:43 +00:00
dsl
22588a3d36 The __strong_alias() seems to have to be in the file with the definition. 
So make bcmp.c define bcmp and memcmp.
This should (?) fix the atari build.
(I've now no idea why the previous change defined memcpy for the alpha build.)
 2003-08-29 19:53:18 +00:00
dsl
904ed3bb04 An ever sneakier way of making memcmp and bcmp use the same code: 
__strong_alias(memcmp,bcmp)
 2003-08-27 22:53:18 +00:00
dsl
d0db314661 Use memset not bzero to help shrink alpha bootxx_lfs 
(sys/arch/alpha/stand/common/start.S also uses bzero, I don't know
any alpha opcodes so cant change that one...)
 2003-08-27 22:42:08 +00:00
matt
4a33fdce54 Actually the right instruction to fill a half-word. 
From Juergen Hannken-Illjes hannken at eis dot cs dot tu-bs dot de
 2003-08-27 17:37:43 +00:00
dsl
db4706faf9 Reduce memory footprint: 
- use file buffer for all block reads
- only save a small amount of the indirect block list
Allows i386 bootxx_ufs code to load /boot from a filesystem with 32k blocks
while still fitting inside 64k of memory.
Code size reduced as well (by ~1k on i386).
It ought to be possible to use a buffer that is smaller than a filesystem
block.  This might be needed in order to boot from filesystems with larger
block sizes.
 2003-08-22 21:33:52 +00:00
elric
72e3ec4b0c Should call ufs_close() if it isn't being built in. 2003-08-21 00:01:28 +00:00
elric
2a56d40c5c make 'path' argument to cd9660_open 'const char *' and fix the fallout. 2003-08-21 00:00:52 +00:00
itojun
1403d9d920 KNF 2003-08-20 13:32:33 +00:00
ragge
a9e5513c6b Kerner library files for pdp10. 2003-08-19 10:59:26 +00:00
dsl
8453fb0040 make 'path' argument to ufs_open 'const char *' and fix the fallout. 2003-08-18 15:45:27 +00:00
dsl
d678060c05 KNF, fix a comment or two 2003-08-18 08:00:52 +00:00
ragge
bc830a1980 Do not use the builtins for the mem* functions on vax, the compiler gets 
confused with the static inline functions vax uses.
 2003-08-13 11:34:24 +00:00
ragge
f69577d50c Include the C versions of the string instructions. 
Replace blkcpy() with a version that can handle overlapping data areas.
 2003-08-13 11:32:23 +00:00
matt
f70606090a Add a memset.S (does not use dcbz; to be added later). It does both bzero 
and memset.
 2003-08-10 21:17:08 +00:00
martin
785cae7ed0 Sync with userland version. 2003-08-10 14:20:03 +00:00
agc
aad01611e7 Move UCB-licensed code from 4-clause to 3-clause licence. 
Patches provided by Joel Baker in PR 22364, verified by myself.
 2003-08-07 16:26:28 +00:00
scw
5d91e08442 In lookup(), don't free "dir" on exit if we found a matching entry. 
Otherwise the caller ends up with a pointer to free'd memory...
 2003-07-15 13:27:07 +00:00
dsl
f92748a3e8 Add xlat_mbr_fstype - converts mbr type to disklabel type 2003-07-07 13:20:17 +00:00
martin
34718fb25a Protect opt_*.h include by _KERNEL_OPT 2003-06-23 14:17:24 +00:00
martin
d505b18964 Make sure to include opt_foo.h if a defflag option FOO is used. 2003-06-23 11:00:59 +00:00
briggs
b2566d8735 Provide a strtoul() implementation based on the one in libc instead of the 
totally different version that was here.  This version, of course, has an
BSD license on it while the old one did not.  This one also compiles down
to tighter code--the smaller the better for libkern & libsa.
 2003-06-07 02:52:33 +00:00
itojun
da3884cbf4 latest copyright notice (more loose). noted by wiz 2003-05-15 15:02:52 +00:00
itojun
99c5869d56 add strl{cpy,cat} to libkern. code from lib/libc/string (originally from openbsd). 2003-05-15 13:50:35 +00:00
scw
3722390978 Allow the default location of "machine/loadfile_machdep.h" to be 
overridden if MACHINE_LOADFILE_MACHDEP is defined.
This makes life much simpler in the face of the myriad of
different boot options for the evb* ports.
 2003-04-29 13:03:55 +00:00
tron
e71f089777 Remove two unused variable to fix a build problem. 2003-04-27 11:12:14 +00:00
bjh21
01f90db242 Remove %b support. 
Encouraged by thorpej.
 2003-04-26 13:25:47 +00:00
christos
abfff333c3 don't define TRUE and FALSE locally. 2003-04-22 15:10:04 +00:00
bjh21
2456c80578 If the format string ends with "%" or "%l", print those characters, just 
as we would if they were part of an invalid conversion specification.
Code-size neutral on ARM; not tested elsewhere.
 2003-04-20 22:23:59 +00:00
bjh21
94c13ff2cd ANSIfy, assume __STDC__, un-__P, KNF. 
Generated code unchanged.
 2003-04-20 19:31:29 +00:00
dsl
35632a80ac lfs code is built from ufs.c 2003-04-16 19:52:58 +00:00
dsl
c327a133c6 Significantly faster memcpy/memmove/bcopy and memset/bzero 2003-04-15 22:49:50 +00:00
dsl
7c8e4cdaea Add interface to boot password checking code that takes password parameter. 2003-04-15 22:26:42 +00:00
dsl
4efa73a16e Build ffsv1 and ffsv2 2003-04-11 11:31:44 +00:00
dsl
ef32565239 Add externs for ffsv1_xxx and ffsv2_xxx 2003-04-11 11:30:12 +00:00
dsl
f671893500 Files to build ffsv1 and ffsv2 versions of ufs.c 2003-04-11 11:28:54 +00:00
dsl
af3660bcdb Use common ffs/lfs file ufs.c instead of lfs specific version. 2003-04-11 11:27:06 +00:00
dsl
5a0534abeb Merge in lfs.c, use defines to build ffsv1, ffsv2, lfsv1 or lfsv2. 
(removes the ability to build a single ufs.o that supports ffs v1 and v2,
that animal was too large for some of the boot code.)
Use shifts and masks to avoid pulling in 64bit divide.
 2003-04-11 11:24:49 +00:00
dsl
fbf4bd0cfe Put extern definition of bcopy in () to avoid macro expansion when 
LIBSA_USE_MEMCPY is defined. Fixes breakage because the return
type of memcpy() is different to that of bcopy.
 2003-04-11 10:34:38 +00:00
dsl
cff85b34d5 Fix prototypes of null_read and null_write, change to return errno values. 
This code can't actually be used anywhere!  I don't think its obvious use
would compile!
 2003-04-10 14:44:05 +00:00
dsl
4a16b1cc1d Add FS_DEF() and FS_OPS() defines to save typing (and errors) elsewhere. 
Kill __P() and argument names in prototypes.
(approved by christos)
 2003-04-10 14:39:46 +00:00
scw
bfc4be13a6 When MEMCOPY is defined, don't bother checking if a backwards-copy is 
required. That's what memmove() is for.

This should fix port-powerpc/16889. The backwards copyin can confuse
uiomove/genfs_getpages, resulting in corruption of files written over NFS.
 2003-04-07 21:04:19 +00:00
bjh21
f34ba16c9c NetBSD/acorn26 has used APCS-32 for years, so unifdef -U__APCS_26__. 2003-04-05 23:27:14 +00:00
he
97b6d5bf4f Conditionalize declaration of local variable ``i'', now that the 
code which uses it is also conditionalized.
 2003-04-02 19:47:25 +00:00
fvdl
42614ed3f3 Add support for UFS2. UFS2 is an enhanced FFS, adding support for 
64 bit block pointers, extended attribute storage, and a few
other things.

This commit does not yet include the code to manipulate the extended
storage (for e.g. ACLs), this will be done later.

Originally written by Kirk McKusick and Network Associates Laboratories for
FreeBSD.
 2003-04-02 10:39:19 +00:00
mycroft
0b87bcb397 constify a couple of pointers. 2003-04-01 21:09:32 +00:00
thorpej
7a3fa51b7f Garbage-collect the DYNAMIC_CRC_TABLE stuff. The table it computed 
was incompatible with the new CRC code, and it is largely unnecessary
now, since the static table is so much smaller.

Fixes PR kern/20935.
 2003-03-29 22:25:25 +00:00
drochner
8b0843a5b2 There is no point in initializing "rootpath" to "/". 
Move it into BSS.
 2003-03-27 12:28:58 +00:00
mycroft
d8c7d22134 *** empty log message *** 2003-03-25 22:52:48 +00:00
mycroft
8320edced9 Remove a whole bunch of crap -- including the entirely adler32 stuff that's 
only used in gzip headers/footers -- that's not actually used here.  Also use
a smaller CRC table.  Saves >4k of code in boot images.
 2003-03-25 22:48:43 +00:00
mycroft
c6052ec21f const! const! 2003-03-25 22:35:36 +00:00
drochner
f81c1c504b remove stuff just moved to bootparam.c and some variables which are 
never used.
 2003-03-19 17:19:32 +00:00
drochner
3906113e15 Move global variables which are used only by bootparam here. 
("domainname" is useless and could be removed, but adding code to
skip this in the RPC reply would probably be more expensive than leaving
it as a dummy variable.)
 2003-03-19 17:18:07 +00:00
mycroft
4d7fb7469d Finish const poisoning. 2003-03-18 20:00:47 +00:00
mycroft
bb478ade6c Move more stuff into .rodata. 2003-03-18 19:33:51 +00:00
mycroft
f6258762e1 Move some stuff into .rodata. 2003-03-18 19:20:09 +00:00
drochner
68edf0e576 separate ether_sprintf() from the rest of ethernet support -- sometimes 
it makes sense to use the former w/o the latter (eg PXE)
 2003-03-12 16:46:31 +00:00
drochner
7b3b2ea783 no need to include "netif.h" anymore 
(shared interface stuff is in iodesc.h, included by net.h)
 2003-03-12 14:51:31 +00:00
drochner
7816074c59 separate the netif interface from the rest of the networking code, 
so that it can be replaced easily in md code
 2003-03-12 14:49:19 +00:00
jmmv
5649a49e43 After the "insert disk <number>, and press return..." message, check only 
for the return keypress.
 2003-03-11 19:43:04 +00:00
drochner
dd688f888f translate EACCES (happens with NFS) 2003-03-11 15:02:54 +00:00
dsl
ef50700873 LIBSA_NO_CLOSE is LIBSA_NO_FS_CLOSE everywhere else. 2003-03-07 00:46:37 +00:00
matt
cc005c66db Switch back to generic bzero/memset until new one is shown to work. 2003-02-25 20:15:02 +00:00
ragge
e8d062d58b Remove bogus check for bogus netmask. 2003-02-25 14:42:30 +00:00
pk
d71686ab26 Introduce fdloadfile() to load an image from an open file descriptor; 
implement loadfile() in terms of it.

This allows clients to open a file once and "load" it multiple times (e.g.
first with COUNT_KERNEL, then with LOAD_KERNEL) without the side-effects
of multiple open calls.
 2003-02-24 10:51:05 +00:00
matt
97d38cdec2 Actually use bzero.S. Also fix bzero to use GET_CPUINFO 2003-02-24 07:14:17 +00:00
matt
05a4c83a70 Don't make memset.c since bzero.o has memset in addition to bzero. 2003-02-24 07:09:18 +00:00
simonb
6e4342ca79 Add support for LFSv2 filesystems. From a libsa standpoint, LFSv1 and 
LFSv2 are treated as separate filesystem types for size considerations.
 2003-02-23 23:17:42 +00:00
simonb
7d43baad24 Use the MAX() macro from <sys/param.h> instead of a local inline. Results 
in same code size in ufs.c and removes an unused inline function in lfs.c.
 2003-02-23 22:47:43 +00:00
simonb
8d6004faf3 We can't use <string.h> for standalone programs; 
use <lib/libkern/libkern.h> for str*() prototypes instead.
 2003-02-23 12:31:29 +00:00
dsl
2d1837c8fc KNR, removing ugly 'unsigned' variables. 
Probably should be size_t, but now matched prototype.
(mainly agreed with christos - he wanted size_t....)
 2003-02-01 14:57:02 +00:00
dsl
912fab6ec9 Beautify a little 2003-02-01 14:54:22 +00:00
dsl
2c4edf02a4 Save some space 
(agreed by christos)
 2003-02-01 14:53:38 +00:00
dsl
3080e19ff3 Support limited filename globbing 
- agreed by christos
 2003-02-01 14:52:13 +00:00
fvdl
a3ff3a3038 Bump daddr_t to 64 bits. Replace it with int32_t in all places where 
it was used on-disk, so that on-disk formats remain the same.
Remove ufs_daddr_t and ufs_lbn_t for the time being.
 2003-01-24 21:55:02 +00:00
christos
8453828bf1 PR/19607: Bernd Ernesti: libsa does not have access to arpa/tftp.h. Put a 
copy of it in our tftp.h
 2003-01-12 18:59:15 +00:00
veego
a64314e402 Fix broken build due too the move of the cd9660 and msdosfs kernel source code. 2002-12-30 16:41:53 +00:00
pk
bd20047a69 Only display the final progress counter if any of the LOAD_ flags was given. 
Fix comment describing the return value.
 2002-12-11 09:55:20 +00:00
thorpej
e8cc3884de Rename __LDPGSZ to AOUT_LDPGSZ, to accurately reflect what it is. 2002-12-10 17:14:02 +00:00
thorpej
4245ee1663 Wrap this file in "#ifndef _STANDALONE". 2002-12-05 17:12:06 +00:00
fvdl
144469b350 Add strtoul.c 2002-11-25 00:55:22 +00:00
fvdl
a186add0a8 If LIBKERN_ARCH is defined, use that as the architecture-specific 
subdirectory. Needed for the x86_64 32bit compile case.
 2002-11-23 23:35:50 +00:00
chris
f86ab1a63e Sync arm asm libkern files with libc's asm files. 2002-11-23 14:29:29 +00:00
itohy
6e73936f81 Use assembly version of bzero() and memset(). 2002-11-20 09:52:53 +00:00
itohy
5d1c87f395 Assembly version of bzero()/memset(). 
Written by SHIMIZU Ryo.
 2002-11-20 09:51:52 +00:00
itohy
766d863c42 memcpy() and memmove() must return the first parameter. 
Problem found by itohy, fixed by SHIMIZU Ryo.
 2002-11-20 09:50:37 +00:00
rearnsha
6576c49b48 Add an assembler version of strcmp, based on example code from the ARM 
ARM.  As an example of the performance difference that this provides
a Dhrystone score on my Shark goes from 213k to 261k.
 2002-11-16 18:27:40 +00:00
thorpej
7f74df5ef3 ABICALLS -> __ABICALLS__ 2002-11-10 18:10:25 +00:00
perry
efd79c70c9 Add lint infrastructure 2002-11-02 07:48:17 +00:00
perry
6448ffbdfe set LLIBS= so we don't try to check the lint lib against llib-lc.ln 2002-11-02 07:46:42 +00:00
chs
cab484e445 move includes to the top so that this builds in libc context too. 2002-10-29 04:40:55 +00:00
chs
c04f87a03e remove setjmp/longjmp from libkern, they're not used. 2002-10-27 18:45:11 +00:00
chs
c5a350ef59 use %g5 instead of %g7 (since we want to use %g7 for the cpu_info pointer 
in the kernel).  resync libc and libkern versions of this file.
 2002-10-27 18:41:27 +00:00
christos
07dca24022 make offsetof lint friendlier. 2002-10-24 20:53:50 +00:00
scw
03c573236d Replace the SuperH memcpy() with homebrewed code. The former seems to have 
a subtle failure mode which can result in corruption of memory outside the
bounds of the destination buffer.
 2002-10-22 12:25:18 +00:00
scw
ac76a83a5c Sync with libc/quad: 
As discussed (briefly) on tech-userlevel, fix our quad support to work
correctly on LP64 platforms. This is mostly just s/long/int/ in the
appropriate places.
 2002-10-20 10:17:14 +00:00
scw
921743eed1 Fix a sign-extension botch for ILP32. 2002-10-19 08:54:23 +00:00
scw
0e1af8ca62 Doh. Bail out early if we're passed a zero-length buffer. 2002-10-19 08:53:45 +00:00
scw
99ad3a762b Add native optimised assembler versions of some libkern routines. 
The memcpy routine is courtesy of SuperH, with some tweaks by me.

XXX: There is room for further optimisation in some of these routines.
 2002-10-17 11:53:32 +00:00
jdolecek
d32bd396f2 #undef ffs before the ffs() function definition, so that the name 
isn't rewrote to __builtin_ffs() on gcc 2.95+; this fixes compilation
on sun2
also change the comment for function
 2002-10-10 10:51:56 +00:00
jdolecek
aaccb8dc2b need to include <sys/param.h> to get inline strlen() on vax; found 
with help of Matt Thomas
 2002-10-08 21:45:36 +00:00
simonb
a30355b57a Add RCS ids. 2002-10-08 11:58:54 +00:00
dan
73390e7e36 let this compile in the non KERNEL case without NRND. 2002-10-06 13:42:36 +00:00
tls
0f95ec4fd5 ESP output was drawing down the entropy pool at a ferocious rate, a 
particular problem on hosts with only wireless interfaces that are
definitely not safe to use as entropy sources.

Add arc4randbytes() which hands out bytes from the same source used
by arc4random().  This is intended to be a _temporary_ interface
until we can design and implement a better general PRNG interface
that is decoupled from the entropy-pool implementation.

Modify key_randomfill() (used only for initialization vectors on
SA creation and via key_sa_stir_iv(), which does not "stir",
despite its name) to use arc4randbytes() instead of pulling bits
directly from the entropy pool.  It is my hope that this change
will pose minimal integration problems for the KAME folks as the
random-pool interface is *already* different between each BSD
variant; this just simplifies the NetBSD case and solves a
fairly serious problem.

Note that it is generally considered acceptable cryptographic
practice to use a fast stream cipher to generate IVs for encryption
with stronger block ciphers.  For example, the use of "non-Approved"
PRNGs to generate IVs for "Approved" block ciphers is explicitly
sanctioned by FIPS 140-2.
 2002-10-06 08:51:44 +00:00
tls
cd114adca5 This commit includes two major changes: 
1) Speed up arc4random().  We make arc4randbyte() inline, which makes this
   not much slower than, say, the other arc4 implementation in our kernel.

   We also replace four calls to arc4randbyte() with a loop, saving about
   20% on some processors where the "unrolled" arc4randbyte() calls would
   needlessly stomp the cache.

2) Address various problems with the initialization/"stirring" code,
   primarily in the area of handling of the source data from the kernel
   entropy pool.  We used to:

	a) Ask the entropy pool for 32 bytes

	b) If we got zero bytes, key with junk from the stack (ouch!)
	   which has some nasty implications, to say the least.  For
	   example, we're most likely to get zero bytes at boot time,
	   when the stack contents are even more predictable than usual.

	c) If we got less than 32 bytes but more than zero bytes, use
	   however many bytes we got as the arc4 key, copying it
	   repeatedly as per usual arc4 key setup.

	   Because of the way NetBSD's entropy pool works, this was
	   mostly harmless, because if you ask for RND_EXTRACT_ANY,
	   you always get as many bytes as you ask for.  However,
	   this is probably a security hole in the original FreeBSD
	   code, where AFAICT you might end up using an 8-bit arc4
	   key -- not good, much worse than using the output of the
	   entropy pool hash function even when it thinks it only
	   has 8 bits of entropy to give you.

	   One thing this code could do on NetBSD that was not so
	   good was to replace a key with a lot of entropy with
	   one with less entropy.  That's clearly counterproductive.

   The new code, instead:

	a) Asks for 32 good bytes.  If it gets them, use them as the
	   arc4 key in the usual way.

	b) Tracks how many entropy bytes the key it's replacing had.
	   If the new entropy request got less bytes, leave the old
	   key in place.  Note that the first time through, the "old
	   key" had zero bytes, so we'll always replace it.

	c) If we get less then 32 bytes but more than we had, request
	   EXTRACT_ANY bytes from the entropy pool, padding the key
	   out to 32 bytes which we then use as the arc4 key in the
	   usual way.

This is still really all rather backwards.  Instead of this generator
deciding to rekey itself using a basically arbitrary metric, it should
register a callback so that the entropy pool code could rekey it when
a lot of bits were available.  Details at 11.

Finally, rename the "stir" function (which did not stir) to "rekey",
which is what it actually does.
 2002-10-06 06:47:40 +00:00
junyoung
2a1b344158 Unconditionally add strstr.c. Bill Studenmund. 2002-10-04 20:00:00 +00:00
junyoung
26737526db Add strstr() to libkern. For now, it's only used in i386 (for processor 
identification).
 2002-10-04 18:39:52 +00:00
itojun
df6ef6d0d3 include rnd.h only under kernel build. 
caveat: arc4random() will not get stirred in bootstrap code.
 2002-10-04 07:33:26 +00:00
itojun
dfea6e4344 add missing "rnd.h" include - noted by simonb 2002-10-04 02:37:23 +00:00
matt
44bc4ef4a9 Ansify's (use prototypes). 2002-10-04 00:50:15 +00:00
scw
42ca361622 Preserve and restore the caller's FP status register, and ensure 
it contains a sane value while we're doing FP ops.
 2002-09-28 10:33:59 +00:00
provos
0f09ed48a5 remove trailing \n in panic(). approved perry. 2002-09-27 15:35:29 +00:00
chs
2841e1341c add strtoul.c, it's now used in MI code. 2002-09-21 17:45:16 +00:00
ragge
77d3833330 Need strtoul() also. 2002-09-19 17:37:32 +00:00
thorpej
2699791533 Do not #include "/usr/include/arpa/tftp.h" directly. Doing so is 
VERY BAD for cross-compiling.
 2002-09-16 16:53:45 +00:00
msaitoh
a991dcef11 Add __movstr_i4_{odd,even} for -m4. 
Written by SHIMIZU Ryo.
 2002-09-05 08:35:15 +00:00
itohy
f89823c1f8 Save 1-4 instructions on all cases except for the ret=0 case. 
This is probably the last version from me. :)
You are welcome to speed it up, of course. :)

Here's a benchmark on SH-4 200MHz.
9.2% faster if all the cases occur evenly.

return value	C version	previous vers	this version	speed ratio
of ffs()	(ns/call) *1	(ns/call)	(ns/call) *2	(*1/*2)
------------	------------	-------------	------------	-----------
 0		  86		 81		 81		1.06
 1		 110		106		 91		1.21
 2		 132		106		 92		1.43
 3		 165		117		 96		1.72
 4		 201		116		 95		2.12
 5		 237		107		 99		2.39
 6		 271		106		101		2.68
 7		 307		116		107		2.87
 8		 342		116		105		3.26
 9		 376		126		111		3.39
10		 410		127		110		3.73
11		 446		136		115		3.88
12		 483		134		116		4.16
13		 518		125		119		4.35
14		 551		126		120		4.59
15		 587		135		127		4.62
16		 624		136		126		4.95
17		 658		139		126		5.22
18		 694		140		126		5.51
19		 727		148		131		5.55
20		 764		150		131		5.83
21		 799		141		135		5.92
22		 834		142		135		6.18
23		 868		152		140		6.20
24		 903		153		142		6.36
25		 939		140		127		7.39
26		 974		141		126		7.73
27		1009		152		131		7.70
28		1044		148		130		8.03
29		1080		141		136		7.94
30		1115		141		136		8.20
31		1151		151		141		8.16
32		1185		151		140		8.46
 2002-09-01 13:14:53 +00:00
itohy
fa5465079f Slightly improved version of ffs(3). 
Partially from SHIMIZU Ryo <ryo@iij.ad.jp>.  Thanks.
Some cases are slower, but other most cases are faster.

Here's a benchmark on SH-4 200MHz.

return value	C version	previous vers	this version	speed ratio
of ffs()	(ns/call) *1	(ns/call)	(ns/call) *2	(*1/*2)
------------	------------	-------------	------------	-----------
 0		  86		 86		 81		1.06
 1		 110		 86		106 *(slower)	1.04
 2		 132		 86		106 *		1.25
 3		 165		105		117 *		1.41
 4		 201		104		116 *		1.73
 5		 237		111		107		2.21
 6		 271		111		106		2.56
 7		 307		126		116		2.65
 8		 342		125		116		2.95
 9		 376		122		126 *		2.98
10		 410		121		127 *		3.23
11		 446		139		136		3.28
12		 483		140		134		3.60
13		 518		146		125		4.14
14		 551		146		126		4.37
15		 587		161		135		4.35
16		 624		162		136		4.59
17		 658		141		139		4.73
18		 694		142		140		4.96
19		 727		160		148		4.91
20		 764		161		150		5.09
21		 799		167		141		5.67
22		 834		167		142		5.87
23		 868		181		152		5.71
24		 903		181		153		5.90
25		 939		146		140		6.71
26		 974		146		141		6.91
27		1009		166		152		6.64
28		1044		165		148		7.05
29		1080		171		141		7.66
30		1115		171		141		7.91
31		1151		185		151		7.62
32		1185		186		151		7.85
 2002-08-28 15:34:35 +00:00
thorpej
181f0a9b54 Tweak the previous change so that a prototype is always provided. 2002-08-25 21:09:45 +00:00
itohy
6736303e13 Use assembly version of ffs(3). 2002-08-24 06:39:48 +00:00
itohy
85ce1de27f Oops, SYSLIBC_SCCS -> LIBC_SCCS 2002-08-24 06:37:24 +00:00
itohy
70b5675025 Assembly version of ffs(3). 
Confirmed to return the same value as that of the C version.

The results of a simple benchmark on SH-4 200MHz, is shown below.
I think this shows acceptable performance.

return value	C version	this version	speed
of ffs()	(ns/call)	(ns/call)	ratio
------------	---------	------------	-----
 0		  86		 86		1.00
 1		 110		 86		1.27
 2		 132		 86		1.53
 3		 165		105		1.57
 4		 201		104		1.93
 5		 237		111		2.13
 6		 271		111		2.44
 7		 307		126		2.43
 8		 342		125		2.73
 9		 376		122		3.08
10		 410		121		3.38
11		 446		139		3.20
12		 483		140		3.45
13		 518		146		3.54
14		 551		146		3.77
15		 587		161		3.64
16		 624		162		3.85
17		 658		141		4.66
18		 694		142		4.88
19		 727		160		4.54
20		 764		161		4.74
21		 799		167		4.78
22		 834		167		4.99
23		 868		181		4.79
24		 903		181		4.98
25		 939		146		6.43
26		 974		146		6.67
27		1009		166		6.07
28		1044		165		6.32
29		1080		171		6.31
30		1115		171		6.52
31		1151		185		6.22
32		1185		186		6.37
 2002-08-24 06:30:34 +00:00