Commit Graph

8494 Commits

Author SHA1 Message Date
Carlos O'Donell
a7624ed987 Fix typo in sys/ptrace.h.
The event code is PTRACE_EVENT_SECCOMP, not PTRAVE_EVENT_SECCOMP.
This patch fixes the V->C typo. There are no ABI issues since the
number remains the same for the code. Code using the old wrong
name will need to be updated.
2013-11-25 14:57:42 -05:00
Joseph Myers
63cfe52b6d Fix powerpc-nofpu build. 2013-11-25 19:07:55 +00:00
Adhemerval Zanella
41e8926aa4 PowerPC: Set/restore rounding mode only when needed
This patch helps some math functions performance by adding the libc_fexxx
variant of inline functions to handle both FPU round and exception set/restore
and by using them on the libc_fexxx_ctx functions. It is based on already coded
fexxx family functions for PPC with fpu.

Here is the summary of performance improvements due this patch (measured on a
POWER7 machine):

Before:

cos(): ITERS:9.5895e+07: TOTAL:5116.03Mcy, MAX:77.6cy, MIN:49.792cy, 18744 calls/Mcy
exp(): ITERS:2.827e+07: TOTAL:5187.15Mcy, MAX:494.018cy, MIN:38.422cy, 5450.01 calls/Mcy
pow(): ITERS:6.1705e+07: TOTAL:5144.26Mcy, MAX:171.95cy, MIN:29.935cy, 11994.9 calls/Mcy
sin(): ITERS:8.6898e+07: TOTAL:5117.06Mcy, MAX:83.841cy, MIN:46.582cy, 16982 calls/Mcy
tan(): ITERS:2.9473e+07: TOTAL:5115.39Mcy, MAX:191.017cy, MIN:172.352cy, 5761.63 calls/Mcy

After:

cos(): ITERS:2.05265e+08: TOTAL:5111.37Mcy, MAX:78.754cy, MIN:24.196cy, 40158.5 calls/Mcy
exp(): ITERS:3.341e+07: TOTAL:5170.84Mcy, MAX:476.317cy, MIN:15.574cy, 6461.23 calls/Mcy
pow(): ITERS:7.6153e+07: TOTAL:5129.1Mcy, MAX:147.5cy, MIN:30.916cy, 14847.2 calls/Mcy
sin(): ITERS:1.58816e+08: TOTAL:5115.11Mcy, MAX:1490.39cy, MIN:22.341cy, 31048.4 calls/Mcy
tan(): ITERS:3.4964e+07: TOTAL:5114.18Mcy, MAX:177.422cy, MIN:146.115cy, 6836.68 calls/Mcy
2013-11-25 06:34:41 -06:00
Roland McGrath
6851bd4d97 Adjust generic swapon prototype to match Linux version. 2013-11-21 15:44:26 -08:00
Guy Martin
daf75146de Don't use broken DL_AUTO_FUNCTION_ADDRESS()
On hppa and ia64, the macro DL_AUTO_FUNCTION_ADDRESS() uses the
variable fptr[2] in it's own scope.

The content of fptr[] is thus undefined right after the macro exits.
Newer gcc's (>= 4.7) reuse the stack space of this variable triggering
a segmentation fault in dl-init.c:69.

To fix this we rewrite the macros to make the call directly to init
and fini without needing to pass back a constructed function pointer.
2013-11-21 15:52:31 -05:00
Siddhesh Poyarekar
f3fd2628d8 Add systemtap probe markers for sin, cos, asin and acos 2013-11-20 07:46:48 +05:30
Joseph Myers
73c1ce4fdb Make powerpc-nofpu floating-point state thread-local (bug 15483). 2013-11-19 13:39:56 +00:00
Joseph Myers
6629449166 Fix spurious "inexact" exceptions from x86 pow with NaN argument (bug 16167). 2013-11-16 12:45:11 +00:00
Adhemerval Zanella
7ab44563a9 PowerPC: Fix __fe_mask_env export
Change SHLIB_COMPAT calls to GLIBC_2_19 for __fe_nomask_env symbol.
2013-11-13 12:58:56 -06:00
H.J. Lu
17c1d9f03e Set arch_minimum_kernel to 3.4.0 for x32
x32 ABI support was added in Linux kernel 3.4.0.
2013-11-13 05:43:58 -08:00
Adhemerval Zanella
7a2ad8cf39 PowerPC: Fix __fe_mask_env export
This patch does not export __fe_mask_env anymore, only providing a
compatibility symbol. It fixes BZ#14143.
2013-11-13 06:45:19 -06:00
David S. Miller
7ddace62b0 Fix sparc 64-bit GMP ifunc resolution in static builds.
[BZ #16150]
	* sysdeps/sparc/sparc64/multiarch/add_n.S: Resolve to the correct generic
	symbol in the non-vis3 case in static builds.
	* sysdeps/sparc/sparc64/multiarch/addmul_1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/mul_1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/sub_n.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/submul_1.S: Likewise.
2013-11-12 12:48:01 -08:00
Adhemerval Zanella
76a9b99861 PowerPC: Fix vDSO missing ODP entries
This patch fixes the vDSO symbol used directed in IFUNC resolver where
they do not have an associated ODP entry leading to undefined behavior
in some cases. It adds an artificial OPD static entry to such cases
and set its TOC to non 0 to avoid triggering lazy resolutions.
2013-11-08 05:04:25 -06:00
David S. Miller
8d6bb57c44 Fix build on pre-v9 32-bit Sparc.
We cannot use fnegd in this code, as fnegd was added in v9.
Only fnegs exists in v8 and earlier.

	[BZ #15985]
	* sysdeps/sparc/sparc32/fpu/s_fdim.S (__fdim): Do not use fnegd
	on pre-v9 cpus, use a fnegs+fmovs sequence instead.
2013-11-06 13:23:36 -08:00
Ondřej Bílka
5d30d85329 Restrict shm_open and shm_unlink to SHMDIR. Fixes bugs 14752 and 15763. 2013-10-31 13:59:01 +01:00
Mike Frysinger
cb8a6dbd17 rename configure.in to configure.ac
Autoconf has been deprecating configure.in for quite a long time.
Rename all our configure.in and preconfigure.in files to .ac.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-10-30 17:32:08 +10:00
Siddhesh Poyarekar
c79a12040c Consolidate conditionals in mp sin/cos functions
Consolidate conditionals in multiple precision sin and cos functions
to prepare the code for addition of probe points.
2013-10-28 16:21:54 +05:30
Adhemerval Zanella
69f13dbf06 PowerPC: strcpy/stpcpy optimization for PPC64/POWER7
This patch intends to unify both strcpy and stpcpy implementationsi
for PPC64 and PPC64/POWER7. The idead default powerpc64 implementation
is to provide both doubleword and word aligned memory access.

For PPC64/POWER7 is also provide doubleword and word memory access,
remove the branch hints, use the cmpb instruction for compare
doubleword/words, and add an optimization for inputs of same alignment.
2013-10-25 13:28:24 -05:00
Siddhesh Poyarekar
7cbcdb3699 Fix stack overflow due to large AF_INET6 requests
Resolves #16072 (CVE-2013-4458).

This patch fixes another stack overflow in getaddrinfo when it is
called with AF_INET6.  The AF_UNSPEC case was fixed as CVE-2013-1914,
but the AF_INET6 case went undetected back then.
2013-10-25 10:22:12 +05:30
Allan McRae
894f3f1049 Fix incorrect getaddrinfo assertion trigger
[BZ #9954]

With the following /etc/hosts:
127.0.0.1       www.my-domain.es
127.0.1.1       www.my-domain.es
192.168.0.1     www.my-domain.es

Using getaddrinfo() on www.my-domain.es, trigger the following assertion:
../sysdeps/posix/getaddrinfo.c:1473: rfc3484_sort: Assertion
`src->results[i].native == -1 || src->results[i].native == a1_native' failed.

This is due to two different bugs:
- In rfc3484_sort() rule 7, src->results[i].native is assigned even if
src->results[i].index is -1, meaning that no interface is associated.
- In getaddrinfo() the source IP address used with the lo interface needs a
special case, as it can be any IP within 127.X.Y.Z.
2013-10-25 14:28:32 +10:00
Joseph Myers
3c8325fb47 Add e500 port. 2013-10-18 21:04:22 +00:00
Andreas Schwab
b957ced889 Don't use gethostbyaddr to determine canonical name 2013-10-17 16:34:27 +02:00
Ondřej Bílka
c5d5d574cb Format floating routines. 2013-10-17 16:03:24 +02:00
Siddhesh Poyarekar
10e1cf6b73 Add systemtap markers to math function slow paths
Add systemtap probes to various slow paths in libm so that application
developers may use systemtap to find out if their applications are
hitting these slow paths.  We have added probes for pow, exp, log,
tan, atan and atan2.
2013-10-11 22:37:53 +05:30
David S. Miller
75b4202ab0 Fix readdir regressions on sparc 32-bit.
* sysdeps/posix/dirstream.h (struct __dirstream): Fix alignment of
	directory block.
2013-10-10 22:32:36 -07:00
David S. Miller
3bf78b7174 Update sparc ULPs.
* sysdeps/sparc/fpu/libm-test-ulps: Update.
2013-10-10 14:42:58 -07:00
Joseph Myers
bd878fc030 Extend powerpc-nofpu -fno-builtin-fabsl workaround to more files. 2013-10-10 19:12:09 +00:00
Joseph Myers
6f10289efb Avoid ordered comparisons of NaNs in ldbl-128ibm acosl and asinl. 2013-10-10 19:11:30 +00:00
Joseph Myers
2ae21ed2d2 soft-fp: fix negation NaN handling (bug 16034). 2013-10-10 11:38:56 +00:00
Ondřej Bílka
e7044ea76b Use p2align instead ALIGN 2013-10-08 15:46:48 +02:00
Siddhesh Poyarekar
885766357d Format e_pow.c 2013-10-08 16:23:16 +05:30
Siddhesh Poyarekar
e7b2d1dd62 Format e_exp.c 2013-10-08 16:22:28 +05:30
Siddhesh Poyarekar
09544cbcd6 Consolidate multiple precision sin/cos functions 2013-10-08 11:50:17 +05:30
Samuel Thibault
7b7bab1391 Add fork hooks for pthread_atfork
pthread_atfork needs application callbacks to be called outside any locking.
2013-10-04 22:29:51 +02:00
Joseph Myers
29d73d867e Move powerpc ports pieces to libc. 2013-10-04 16:02:33 +00:00
Joseph Myers
e246b34759 e500 port: adjust sysdeps/unix/sysv/linux/configure.in case. 2013-10-04 15:57:50 +00:00
Joseph Myers
89c2003e84 e500 port: fix fpu_control.h constant values. 2013-10-04 15:56:48 +00:00
Joseph Myers
cd78f7e767 e500 port: getcontext / setcontext / swapcontext. 2013-10-04 15:55:15 +00:00
Alan Modra
4cb81307b3 Use stdint.h types in union unaligned.
* sysdeps/powerpc/powerpc32/dl-machine.c (__process_machine_rela):
	Use stdint types in rather than __attribute__((mode())).
	* sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela): Likewise.
2013-10-04 12:51:11 +09:30
Alan Modra
f8e3e9f31b Correct little-endian relocation of UADDR64,32,16.
* sysdeps/powerpc/powerpc32/dl-machine.c (__process_machine_rela):
	Correct handling of unaligned relocs for little-endian.
	* sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela): Likewise.
2013-10-04 11:33:12 +09:30
Alan Modra
466b039332 PowerPC LE memchr and memrchr
http://sourceware.org/ml/libc-alpha/2013-08/msg00105.html

Like strnlen, memchr and memrchr had a number of defects fixed by this
patch as well as adding little-endian support.  The first one I
noticed was that the entry to the main loop needlessly checked for
"are we done yet?" when we know the size is large enough that we can't
be done.  The second defect I noticed was that the main loop count was
wrong, which in turn meant that the small loop needed to handle an
extra word.  Thirdly, there is nothing to say that the string can't
wrap around zero, except of course that we'd normally hit a segfault
on trying to read from address zero.  Fixing that simplified a number
of places:

-	/* Are we done already?  */
-	addi    r9,r8,8
-	cmpld	r9,r7
-	bge	L(null)

becomes

+	cmpld	r8,r7
+	beqlr

However, the exit gets an extra test because I test for being on the
last word then if so whether the byte offset is less than the end.
Overall, the change is a win.

Lastly, memrchr used the wrong cache hint.

	* sysdeps/powerpc/powerpc64/power7/memchr.S: Replace rlwimi with
	insrdi.  Make better use of reg selection to speed exit slightly.
	Schedule entry path a little better.  Remove useless "are we done"
	checks on entry to main loop.  Handle wrapping around zero address.
	Correct main loop count.  Handle single left-over word from main
	loop inline rather than by using loop_small.  Remove extra word
	case in loop_small caused by wrong loop count.  Add little-endian
	support.
	* sysdeps/powerpc/powerpc32/power7/memchr.S: Likewise.
	* sysdeps/powerpc/powerpc64/power7/memrchr.S: Likewise.  Use proper
	cache hint.
	* sysdeps/powerpc/powerpc32/power7/memrchr.S: Likewise.
	* sysdeps/powerpc/powerpc64/power7/rawmemchr.S: Add little-endian
	support.  Avoid rlwimi.
	* sysdeps/powerpc/powerpc32/power7/rawmemchr.S: Likewise.
2013-10-04 10:41:46 +09:30
Alan Modra
3be87c77d2 PowerPC LE memset
http://sourceware.org/ml/libc-alpha/2013-08/msg00104.html

One of the things I noticed when looking at power7 timing is that rlwimi
is cracked and the two resulting insns have a register dependency.
That makes it a little slower than the equivalent rldimi.

	* sysdeps/powerpc/powerpc64/memset.S: Replace rlwimi with
        insrdi.  Formatting.
	* sysdeps/powerpc/powerpc64/power4/memset.S: Likewise.
	* sysdeps/powerpc/powerpc64/power6/memset.S: Likewise.
	* sysdeps/powerpc/powerpc64/power7/memset.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/memset.S: Likewise.
	* sysdeps/powerpc/powerpc32/power6/memset.S: Likewise.
	* sysdeps/powerpc/powerpc32/power7/memset.S: Likewise.
2013-10-04 10:41:35 +09:30
Alan Modra
759cfef3ac PowerPC LE memcpy
http://sourceware.org/ml/libc-alpha/2013-08/msg00103.html

LIttle-endian support for memcpy.  I spent some time cleaning up the
64-bit power7 memcpy, in order to avoid the extra alignment traps
power7 takes for little-endian.  It probably would have been better
to copy the linux kernel version of memcpy.

	* sysdeps/powerpc/powerpc32/power4/memcpy.S: Add little endian support.
	* sysdeps/powerpc/powerpc32/power6/memcpy.S: Likewise.
	* sysdeps/powerpc/powerpc32/power7/memcpy.S: Likewise.
	* sysdeps/powerpc/powerpc32/power7/mempcpy.S: Likewise.
	* sysdeps/powerpc/powerpc64/memcpy.S: Likewise.
	* sysdeps/powerpc/powerpc64/power4/memcpy.S: Likewise.
	* sysdeps/powerpc/powerpc64/power6/memcpy.S: Likewise.
	* sysdeps/powerpc/powerpc64/power7/memcpy.S: Likewise.
	* sysdeps/powerpc/powerpc64/power7/mempcpy.S: Likewise.  Make better
	use of regs.  Use power7 mtocrf.  Tidy function tails.
2013-10-04 10:41:24 +09:30
Alan Modra
fe6e95d717 PowerPC LE memcmp
http://sourceware.org/ml/libc-alpha/2013-08/msg00102.html

This is a rather large patch due to formatting and renaming.  The
formatting changes were to make it possible to compare power7 and
power4 versions of memcmp.  Using different register defines came
about while I was wrestling with the code, trying to find spare
registers at one stage.  I found it much simpler if we refer to a reg
by the same name throughout a function, so it's better if short-term
multiple use regs like rTMP are referred to using their register
number.  I made the cr field usage changes when attempting to reload
rWORDn regs in the exit path to byte swap before comparing when
little-endian.  That proved a bad idea due to the pipelining involved
in the main loop;  Offsets to reload the regs were different first
time around the loop..  Anyway, I left the cr field usage changes in
place for consistency.

Aside from these more-or-less cosmetic changes, I fixed a number of
places where an early exit path restores regs unnecessarily, removed
some dead code, and optimised one or two exits.

	* sysdeps/powerpc/powerpc64/power7/memcmp.S: Add little-endian support.
	Formatting.  Consistently use rXXX register defines or rN defines.
	Use early exit labels that avoid restoring unused non-volatile regs.
	Make cr field use more consistent with rWORDn compares.  Rename
	regs used as shift registers for unaligned loop, using rN defines
	for short lifetime/multiple use regs.
	* sysdeps/powerpc/powerpc64/power4/memcmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/power7/memcmp.S: Likewise.  Exit with
	addi 1,1,64 to pop stack frame.  Simplify return value code.
	* sysdeps/powerpc/powerpc32/power4/memcmp.S: Likewise.
2013-10-04 10:40:56 +09:30
Alan Modra
664318c3eb PowerPC LE strchr
http://sourceware.org/ml/libc-alpha/2013-08/msg00101.html

Adds little-endian support to optimised strchr assembly.  I've also
tweaked the big-endian code a little.  In power7/strchr.S there's a
check in the tail of the function that we didn't match 0 before
finding a c match, done by comparing leading zero counts.  It's just
as valid, and quicker, to compare the raw output from cmpb.

Another little tweak is to use rldimi/insrdi in place of rlwimi for
the power7 strchr functions.  Since rlwimi is cracked, it is a few
cycles slower.  rldimi can be used on the 32-bit power7 functions
too.

	* sysdeps/powerpc/powerpc64/power7/strchr.S (strchr): Add little-endian
	support.  Correct typos, formatting.  Optimize tail.  Use insrdi
	rather than rlwimi.
	* sysdeps/powerpc/powerpc32/power7/strchr.S: Likewise.
	* sysdeps/powerpc/powerpc64/power7/strchrnul.S (__strchrnul): Add
	little-endian support.  Correct typos.
	* sysdeps/powerpc/powerpc32/power7/strchrnul.S: Likewise.  Use insrdi
	rather than rlwimi.
	* sysdeps/powerpc/powerpc64/strchr.S (rTMP4, rTMP5): Define.  Use
	in loop and entry code to keep "and." results.
	(strchr): Add little-endian support.  Comment.  Move cntlzd
	earlier in tail.
	* sysdeps/powerpc/powerpc32/strchr.S: Likewise.
2013-10-04 10:40:22 +09:30
Alan Modra
43b8401371 PowerPC LE strcpy
http://sourceware.org/ml/libc-alpha/2013-08/msg00100.html

The strcpy changes for little-endian are quite straight-forward, just
a matter of rotating the last word differently.

I'll note that the powerpc64 version of stpcpy is just begging to be
converted to use 64-bit loads and stores..

	* sysdeps/powerpc/powerpc64/strcpy.S: Add little-endian support:
	* sysdeps/powerpc/powerpc32/strcpy.S: Likewise.
	* sysdeps/powerpc/powerpc64/stpcpy.S: Likewise.
	* sysdeps/powerpc/powerpc32/stpcpy.S: Likewise.
2013-10-04 10:40:11 +09:30
Alan Modra
8a7413f9b0 PowerPC LE strcmp and strncmp
http://sourceware.org/ml/libc-alpha/2013-08/msg00099.html

More little-endian support.  I leave the main strcmp loops unchanged,
(well, except for renumbering rTMP to something other than r0 since
it's needed in an addi insn) and modify the tail for little-endian.

I noticed some of the big-endian tail code was a little untidy so have
cleaned that up too.

	* sysdeps/powerpc/powerpc64/strcmp.S (rTMP2): Define as r0.
	(rTMP): Define as r11.
	(strcmp): Add little-endian support.  Optimise tail.
	* sysdeps/powerpc/powerpc32/strcmp.S: Similarly.
	* sysdeps/powerpc/powerpc64/strncmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/strncmp.S: Likewise.
	* sysdeps/powerpc/powerpc64/power4/strncmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/strncmp.S: Likewise.
	* sysdeps/powerpc/powerpc64/power7/strncmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/power7/strncmp.S: Likewise.
2013-10-04 10:39:52 +09:30
Alan Modra
33ee81de05 PowerPC LE strnlen
http://sourceware.org/ml/libc-alpha/2013-08/msg00098.html

The existing strnlen code has a number of defects, so this patch is more
than just adding little-endian support.  The changes here are similar to
those for memchr.

	* sysdeps/powerpc/powerpc64/power7/strnlen.S (strnlen): Add
	little-endian support.  Remove unnecessary "are we done" tests.
	Handle "s" wrapping around zero and extremely large "size".
	Correct main loop count.  Handle single left-over word from main
	loop inline rather than by using small_loop.  Correct comments.
	Delete "zero" tail, use "end_max" instead.
	* sysdeps/powerpc/powerpc32/power7/strnlen.S: Likewise.
2013-10-04 10:39:42 +09:30
Alan Modra
db9b4570c5 PowerPC LE strlen
http://sourceware.org/ml/libc-alpha/2013-08/msg00097.html

This is the first of nine patches adding little-endian support to the
existing optimised string and memory functions.  I did spend some
time with a power7 simulator looking at cycle by cycle behaviour for
memchr, but most of these patches have not been run on cpu simulators
to check that we are going as fast as possible.  I'm sure PowerPC can
do better.  However, the little-endian support mostly leaves main
loops unchanged, so I'm banking on previous authors having done a
good job on big-endian..  As with most code you stare at long enough,
I found some improvements for big-endian too.

Little-endian support for strlen.  Like most of the string functions,
I leave the main word or multiple-word loops substantially unchanged,
just needing to modify the tail.

Removing the branch in the power7 functions is just a tidy.  .align
produces a branch anyway.  Modifying regs in the non-power7 functions
is to suit the new little-endian tail.

	* sysdeps/powerpc/powerpc64/power7/strlen.S (strlen): Add little-endian
	support.  Don't branch over align.
	* sysdeps/powerpc/powerpc32/power7/strlen.S: Likewise.
	* sysdeps/powerpc/powerpc64/strlen.S (strlen): Add little-endian support.
	Rearrange tmp reg use to suit.  Comment.
	* sysdeps/powerpc/powerpc32/strlen.S: Likewise.
2013-10-04 10:39:32 +09:30
Alan Modra
f7c399cff5 PowerPC SIGSTKSZ
http://sourceware.org/ml/libc-alpha/2013-08/msg00093.html

This copies the sparc version of sigstack.h, which gives powerpc
 #define MINSIGSTKSZ     4096
 #define SIGSTKSZ        16384

Before the VSX changes, struct rt_sigframe size was 1920 plus 128 for
__SIGNAL_FRAMESIZE giving ppc64 exactly the default MINSIGSTKSZ of
2048.

After VSX, ucontext increased by 256 bytes.  Oops, we're over
MINSIGSTKSZ, so powerpc has been using the wrong value for quite a
while.  Add another ucontext for TM and rt_sigframe is now at 3872,
giving actual MINSIGSTKSZ of 4000.

The glibc testcase that I was looking at was tst-cancel21, which
allocates 2*SIGSTKSZ (not because the test is trying to be
conservative, but because the test actually has nested signal stack
frames).  We blew the allocation by 48 bytes when using current
mainline gcc to compile glibc (le ppc64).

The required stack depth in _dl_lookup_symbol_x from the top of the
next signal frame was 10944 bytes.  I guess you'd want to add 288 to
that, implying an actual SIGSTKSZ of 11232.

	* sysdeps/unix/sysv/linux/powerpc/bits/sigstack.h: New file.
2013-10-04 10:39:11 +09:30
Alan Modra
0b2c2ace36 PowerPC makecontext
http://sourceware.org/ml/libc-alpha/2013-08/msg00092.html

Use conditional form of branch and link to avoid destroying the cpu
link stack used to predict blr return addresses.

	* sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S: Use
	conditional form of branch and link when obtaining pc.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: Likewise.
2013-10-04 10:38:59 +09:30
Alan Modra
02f04a6c7f PowerPC LE _dl_hwcap access
http://sourceware.org/ml/libc-alpha/2013-08/msg00091.html

More LE support, correcting word accesses to _dl_hwcap.

	* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S: Use
	HIWORD/LOWORD.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S: Ditto.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S: Ditto.
2013-10-04 10:38:46 +09:30
Alan Modra
9b874b2f1e PowerPC ugly symbol versioning
http://sourceware.org/ml/libc-alpha/2013-08/msg00090.html

This patch fixes symbol versioning in setjmp/longjmp.  The existing
code uses raw versions, which results in wrong symbol versioning when
you want to build glibc with a base version of 2.19 for LE.

Note that the merging the 64-bit and 32-bit versions in novmx-lonjmp.c
and pt-longjmp.c doesn't result in GLIBC_2.0 versions for 64-bit, due
to the base in shlib_versions.

	* sysdeps/powerpc/longjmp.c: Use proper symbol versioning macros.
	* sysdeps/powerpc/novmx-longjmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/bsd-_setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/bsd-setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/__longjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/mcount.c: Likewise.
	* sysdeps/powerpc/powerpc32/setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc64/setjmp.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/powerpc/pt-longjmp.c: Likewise.
2013-10-04 10:38:28 +09:30
Anton Blanchard
be1e5d3113 PowerPC LE setjmp/longjmp
http://sourceware.org/ml/libc-alpha/2013-08/msg00089.html

Little-endian fixes for setjmp/longjmp.  When writing these I noticed
the setjmp code corrupts the non volatile VMX registers when using an
unaligned buffer.  Anton fixed this, and also simplified it quite a
bit.

The current code uses boilerplate for the case where we want to store
16 bytes to an unaligned address.  For that we have to do a
read/modify/write of two aligned 16 byte quantities.  In our case we
are storing a bunch of back to back data (consective VMX registers),
and only the start and end of the region need the read/modify/write.

	[BZ #15723]
	* sysdeps/powerpc/jmpbuf-offsets.h: Comment fix.
	* sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S: Correct
	_dl_hwcap access for little-endian.
	* sysdeps/powerpc/powerpc32/fpu/setjmp-common.S: Likewise.  Don't
	destroy vmx regs when saving unaligned.
	* sysdeps/powerpc/powerpc64/__longjmp-common.S: Correct CR load.
	* sysdeps/powerpc/powerpc64/setjmp-common.S: Likewise CR save.  Don't
	destroy vmx regs when saving unaligned.
2013-10-04 10:37:59 +09:30
Alan Modra
fef13a78ea PowerPC floating point little-endian [15 of 15]
http://sourceware.org/ml/libc-alpha/2013-07/msg00206.html

The union loses when little-endian.

	* sysdeps/powerpc/powerpc32/power4/hp-timing.h (HP_TIMING_NOW):
	Don't use a union to pack hi/low value.
2013-10-04 10:37:27 +09:30
Anton Blanchard
76a66d510a PowerPC floating point little-endian [14 of 15]
http://sourceware.org/ml/libc-alpha/2013-07/msg00205.html

These all wrongly specified float constants in a 64-bit word.

	* sysdeps/powerpc/powerpc64/fpu/s_ceilf.S: Correct float constants
	for little-endian.
	* sysdeps/powerpc/powerpc64/fpu/s_floorf.S: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/s_nearbyintf.S: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/s_rintf.S: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/s_roundf.S: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/s_truncf.S: Likewise.
2013-10-04 10:36:24 +09:30
Alan Modra
6a31fe7f9c PowerPC floating point little-endian [13 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00088.html

	* sysdeps/powerpc/powerpc32/fpu/s_roundf.S: Increase alignment of
	constants to usual value for .cst8 section, and remove redundant
	high address load.
	* sysdeps/powerpc/powerpc32/power4/fpu/s_llround.S: Use float
	constant for 0x1p52.  Load little-endian words of double from
	correct stack offsets.
2013-10-04 10:35:54 +09:30
Alan Modra
7b88401f3b PowerPC floating point little-endian [12 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00087.html

Fixes for little-endian in 32-bit assembly.

	* sysdeps/powerpc/sysdep.h (LOWORD, HIWORD, HISHORT): Define.
	* sysdeps/powerpc/powerpc32/fpu/s_copysign.S: Load little-endian
	words of double from correct stack offsets.
	* sysdeps/powerpc/powerpc32/fpu/s_copysignl.S: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/s_lrint.S: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/s_lround.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/s_llrint.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/s_llrintf.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_llround.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_lround.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5/fpu/s_isnan.S: Likewise.
	* sysdeps/powerpc/powerpc32/power6/fpu/s_isnan.S: Likewise.
	* sysdeps/powerpc/powerpc32/power6/fpu/s_llrint.S: Likewise.
	* sysdeps/powerpc/powerpc32/power6/fpu/s_llrintf.S: Likewise.
	* sysdeps/powerpc/powerpc32/power6/fpu/s_llround.S: Likewise.
	* sysdeps/powerpc/powerpc32/power7/fpu/s_finite.S: Likewise.
	* sysdeps/powerpc/powerpc32/power7/fpu/s_isinf.S: Likewise.
	* sysdeps/powerpc/powerpc32/power7/fpu/s_isnan.S: Likewise.
	* sysdeps/powerpc/powerpc64/power7/fpu/s_finite.S: Use HISHORT.
	* sysdeps/powerpc/powerpc64/power7/fpu/s_isinf.S: Likewise.
2013-10-04 10:35:43 +09:30
Alan Modra
9c008155b7 PowerPC floating point little-endian [11 of 15]
http://sourceware.org/ml/libc-alpha/2013-07/msg00202.html

Another little-endian fix.

	* sysdeps/powerpc/fpu_control.h (_FPU_GETCW): Rewrite using
	64-bit int/double union.
	(_FPU_SETCW): Likewise.
	* sysdeps/powerpc/fpu/tst-setcontext-fpscr.c (_GET_DI_FPSCR): Likewise.
	(_SET_DI_FPSCR, _GET_SI_FPSCR, _SET_SI_FPSCR): Likewise.
2013-10-04 10:35:21 +09:30
Alan Modra
da13146da1 PowerPC floating point little-endian [10 of 15]
http://sourceware.org/ml/libc-alpha/2013-07/msg00201.html

These two functions oddly test x+1>0 when a double x is >= 0.0, and
similarly when x is negative.  I don't see the point of that since the
test should always be true.  I also don't see any need to convert x+1
to integer rather than simply using xr+1.  Note that the standard
allows these functions to return any value when the input is outside
the range of long long, but it's not too hard to prevent xr+1
overflowing so that's what I've done.

(With rounding mode FE_UPWARD, x+1 can be a lot more than what you
might naively expect, but perhaps that situation was covered by the
x - xrf < 1.0 test.)

	* sysdeps/powerpc/fpu/s_llround.c (__llround): Rewrite.
	* sysdeps/powerpc/fpu/s_llroundf.c (__llroundf): Rewrite.
2013-10-04 10:35:10 +09:30
Alan Modra
603e84104c PowerPC floating point little-endian [9 of 15]
http://sourceware.org/ml/libc-alpha/2013-07/msg00200.html

This works around the fact that vsx is disabled in current
little-endian gcc.  Also, float constants take 4 bytes in memory
vs. 16 bytes for vector constants, and we don't need to write one lot
of masks for double (register format) and another for float (mem
format).

	* sysdeps/powerpc/fpu/s_float_bitwise.h (__float_and_test28): Don't
	use vector int constants.
	(__float_and_test24, __float_and8, __float_get_exp): Likewise.
2013-10-04 10:34:57 +09:30
Anton Blanchard
4a28b3ca4b PowerPC floating point little-endian [8 of 15]
http://sourceware.org/ml/libc-alpha/2013-07/msg00199.html

Corrects floating-point environment code for little-endian.

	* sysdeps/powerpc/fpu/fenv_libc.h (fenv_union_t): Replace int
	array with long long.
	* sysdeps/powerpc/fpu/e_sqrt.c (__slow_ieee754_sqrt): Adjust.
	* sysdeps/powerpc/fpu/e_sqrtf.c (__slow_ieee754_sqrtf): Adjust.
	* sysdeps/powerpc/fpu/fclrexcpt.c (__feclearexcept): Adjust.
	* sysdeps/powerpc/fpu/fedisblxcpt.c (fedisableexcept): Adjust.
	* sysdeps/powerpc/fpu/feenablxcpt.c (feenableexcept): Adjust.
	* sysdeps/powerpc/fpu/fegetexcept.c (__fegetexcept): Adjust.
	* sysdeps/powerpc/fpu/feholdexcpt.c (feholdexcept): Adjust.
	* sysdeps/powerpc/fpu/fesetenv.c (__fesetenv): Adjust.
	* sysdeps/powerpc/fpu/feupdateenv.c (__feupdateenv): Adjust.
	* sysdeps/powerpc/fpu/fgetexcptflg.c (__fegetexceptflag): Adjust.
	* sysdeps/powerpc/fpu/fraiseexcpt.c (__feraiseexcept): Adjust.
	* sysdeps/powerpc/fpu/fsetexcptflg.c (__fesetexceptflag): Adjust.
	* sysdeps/powerpc/fpu/ftestexcept.c (fetestexcept): Adjust.
2013-10-04 10:34:26 +09:30
Anton Blanchard
2ca85d2bbb PowerPC floating point little-endian [7 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00086.html

	* sysdeps/powerpc/bits/mathinline.h (__signbitf): Use builtin.
	(__signbit): Likewise.  Correct for little-endian.
	(__signbitl): Call __signbit.
	(lrint): Correct for little-endian.
	(lrintf): Call lrint.
2013-10-04 10:34:14 +09:30
Alan Modra
62a728aeff PowerPC floating point little-endian [6 of 15]
http://sourceware.org/ml/libc-alpha/2013-07/msg00197.html

A rewrite to make this code correct for little-endian.

	* sysdeps/ieee754/ldbl-128ibm/e_sqrtl.c (mynumber): Replace
	union 32-bit int array member with 64-bit int array.
	(t515, tm256): Double rather than long double.
	(__ieee754_sqrtl): Rewrite using 64-bit arithmetic.
2013-10-04 10:33:21 +09:30
Alan Modra
32c301dfc9 PowerPC floating point little-endian [5 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00085.html

Rid ourselves of ieee854.

	* sysdeps/ieee754/ldbl-128ibm/ieee754.h (union ieee854_long_double):
	Delete.
	(IEEE854_LONG_DOUBLE_BIAS): Delete.
	* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h: Don't include ieee854
	version of math_ldbl.h.
2013-10-04 10:33:05 +09:30
Alan Modra
650ef4bd79 PowerPC floating point little-endian [4 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00084.html

Another batch of ieee854 macros and union replacement.  These four
files also have bugs fixed with this patch.  The fact that the two
doubles in an IBM long double may have different signs means that
negation and absolute value operations can't just twiddle one sign bit
as you can with ieee864 style extended double.  fmodl, remainderl,
erfl and erfcl all had errors of this type.  erfl also returned +1 for
large magnitude negative input where it should return -1.  The hypotl
error is innocuous since the value adjusted twice is only used as a
flag.  The e_hypotl.c tests for large "a" and small "b" are mutually
exclusive because we've already exited when x/y > 2**120.  That allows
some further small simplifications.

	[BZ #15734], [BZ #15735]
	* sysdeps/ieee754/ldbl-128ibm/e_fmodl.c (__ieee754_fmodl): Rewrite
	all uses of ieee875 long double macros and unions.  Simplify test
	for 0.0L.  Correct |x|<|y| and |x|=|y| test.  Use
	ldbl_extract_mantissa value for ix,iy exponents.  Properly
	normalize after ldbl_extract_mantissa, and don't add hidden bit
	already handled.  Don't treat low word of ieee854 mantissa like
	low word of IBM long double and mask off bit when testing for
	zero.
	* sysdeps/ieee754/ldbl-128ibm/e_hypotl.c (__ieee754_hypotl): Rewrite
	all uses of ieee875 long double macros and unions.  Simplify tests
	for 0.0L and inf.  Correct double adjustment of k.  Delete dead code
	adjusting ha,hb.  Simplify code setting kld.  Delete two600 and
	two1022, instead use their values.  Recognise that tests for large
	"a" and small "b" are mutually exclusive.  Rename vars.  Comment.
	* sysdeps/ieee754/ldbl-128ibm/e_remainderl.c (__ieee754_remainderl):
	Rewrite all uses of ieee875 long double macros and unions.  Simplify
	test for 0.0L and nan.  Correct negation.
	* sysdeps/ieee754/ldbl-128ibm/s_erfl.c (__erfl): Rewrite all uses of
	ieee875 long double macros and unions.  Correct output for large
	magnitude x.  Correct absolute value calculation.
	(__erfcl): Likewise.
	* math/libm-test.inc: Add tests for errors discovered in IBM long
	double versions of fmodl, remainderl, erfl and erfcl.
2013-10-04 10:32:48 +09:30
Alan Modra
765714cafc PowerPC floating point little-endian [3 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00083.html

Further replacement of ieee854 macros and unions.  These files also
have some optimisations for comparison against 0.0L, infinity and nan.
Since the ABI specifies that the high double of an IBM long double
pair is the value rounded to double, a high double of 0.0 means the
low double must also be 0.0.  The ABI also says that infinity and
nan are encoded in the high double, with the low double unspecified.
This means that tests for 0.0L, +/-Infinity and +/-NaN need only check
the high double.

	* sysdeps/ieee754/ldbl-128ibm/e_atan2l.c (__ieee754_atan2l): Rewrite
	all uses of ieee854 long double macros and unions.  Simplify tests
	for long doubles that are fully specified by the high double.
	* sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_ilogbl.c (__ieee754_ilogbl): Likewise.
	Remove dead code too.
	* sysdeps/ieee754/ldbl-128ibm/e_jnl.c (__ieee754_jnl): Likewise.
	(__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_log10l.c (__ieee754_log10l): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_logl.c (__ieee754_logl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_powl.c (__ieee754_powl): Likewise.
	Remove dead code too.
	* sysdeps/ieee754/ldbl-128ibm/k_tanl.c (__kernel_tanl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_expm1l.c (__expm1l): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_frexpl.c (__frexpl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_isinf_nsl.c (__isinf_nsl): Likewise.
	Simplify.
	* sysdeps/ieee754/ldbl-128ibm/s_isinfl.c (___isinfl): Likewise.
	Simplify.
	* sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (__log1pl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_modfl.c (__modfl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c (__nextafterl): Likewise.
	Comment on variable precision.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttoward.c (__nexttoward): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c (__nexttowardf):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_remquol.c (__remquol): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_scalblnl.c (__scalblnl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_scalbnl.c (__scalbnl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_tanhl.c (__tanhl): Likewise.
	* sysdeps/powerpc/fpu/libm-test-ulps: Adjust tan_towardzero ulps.
2013-10-04 10:32:36 +09:30
Alan Modra
4ebd120cd9 PowerPC floating point little-endian [2 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00082.html

This patch replaces occurrences of GET_LDOUBLE_* and SET_LDOUBLE_*
macros, and union ieee854_long_double_shape_type in ldbl-128ibm/,
and a stray one in the 32-bit fpu support.  These files have no
significant changes apart from rewriting the long double bit access.

	* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h (ldbl_high): Define.
	* sysdeps/ieee754/ldbl-128ibm/e_acoshl.c (__ieee754_acoshl): Rewrite
	all uses of ieee854 long double macros and unions.
	* sysdeps/ieee754/ldbl-128ibm/e_acosl.c (__ieee754_acosl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_asinl.c (__ieee754_asinl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_atanhl.c (__ieee754_atanhl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_coshl.c (__ieee754_coshl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_log2l.c (__ieee754_log2l): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c (__ieee754_rem_pio2l):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_sinhl.c (__ieee754_sinhl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/k_cosl.c (__kernel_cosl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/k_sincosl.c (__kernel_sincosl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/k_sinl.c (__kernel_sinl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_asinhl.c (__asinhl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_atanl.c (__atanl): Likewise.
	Simplify sign and nan test too.
	* sysdeps/ieee754/ldbl-128ibm/s_cosl.c (__cosl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fabsl.c (__fabsl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_finitel.c (___finitel): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fpclassifyl.c (___fpclassifyl):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_isnanl.c (___isnanl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_issignalingl.c (__issignalingl):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_logbl.c (__logbl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_signbitl.c (___signbitl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_sincosl.c (__sincosl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_sinl.c (__sinl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_tanl.c (__tanl): Likewise.
	* sysdeps/powerpc/powerpc32/power7/fpu/s_logbl.c (__logbl): Likewise.
2013-10-04 10:32:19 +09:30
Alan Modra
1b6adf888d PowerPC floating point little-endian [1 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00081.html

This is the first of a series of patches to ban ieee854_long_double
and the ieee854_long_double macros when using IBM long double.  union
ieee854_long_double just isn't correct for IBM long double, especially
when little-endian, and pretending it is OK has allowed a number of
bugs to remain undetected in sysdeps/ieee754/ldbl-128ibm/.

This changes the few places in generic code that use it.

	* stdio-common/printf_size.c (__printf_size): Don't use
	union ieee854_long_double in fpnum union.
	* stdio-common/printf_fphex.c (__printf_fphex): Likewise.  Use
	signbit macro to retrieve sign from long double.
	* stdio-common/printf_fp.c (___printf_fp): Use signbit macro to
	retrieve sign from long double.
	* sysdeps/ieee754/ldbl-128ibm/printf_fphex.c: Adjust for fpnum change.
	* sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise.
	* sysdeps/ieee754/ldbl-96/printf_fphex.c: Likewise.
	* sysdeps/x86_64/fpu/printf_fphex.c: Likewise.
	* math/test-misc.c (main): Don't use union ieee854_long_double.
ports/
	* sysdeps/ia64/fpu/printf_fphex.c: Adjust for fpnum change.
2013-10-04 10:31:41 +09:30
Alan Modra
4cf69995e2 Fix for [BZ #15680] IBM long double inaccuracy
http://sourceware.org/ml/libc-alpha/2013-06/msg00919.html

I discovered a number of places where denormals and other corner cases
were being handled wrongly.

- printf_fphex.c: Testing for the low double exponent being zero is
unnecessary.  If the difference in exponents is less than 53 then the
high double exponent must be nearing the low end of its range, and the
low double exponent hit rock bottom.

- ldbl2mpn.c: A denormal (ie. exponent of zero) value is treated as
if the exponent was one, so shift mantissa left by one.  Code handling
normalisation of the low double mantissa lacked a test for shift count
greater than bits in type being shifted, and lacked anything to handle
the case where the difference in exponents is less than 53 as in
printf_fphex.c.

- math_ldbl.h (ldbl_extract_mantissa): Same as above, but worse, with
code testing for exponent > 1 for some reason, probably a typo for >= 1.

- math_ldbl.h (ldbl_insert_mantissa): Round the high double as per
mpn2ldbl.c (hi is odd or explicit mantissas non-zero) so that the
number we return won't change when applying ldbl_canonicalize().
Add missing overflow checks and normalisation of high mantissa.
Correct misleading comment: "The hidden bit of the lo mantissa is
zero" is not always true as can be seen from the code rounding the hi
mantissa.  Also by inspection, lzcount can never be less than zero so
remove that test.  Lastly, masking bitfields to their widths can be
left to the compiler.

- mpn2ldbl.c: The overflow checks here on rounding of high double were
just plain wrong.  Incrementing the exponent must be accompanied by a
shift right of the mantissa to keep the value unchanged.  Above notes
for ldbl_insert_mantissa are also relevant.

	[BZ #15680]
	* sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c: Comment fix.
	* sysdeps/ieee754/ldbl-128ibm/printf_fphex.c
	(PRINT_FPHEX_LONG_DOUBLE): Tidy code by moving -53 into ediff
	calculation.  Remove unnecessary test for denormal exponent.
	* sysdeps/ieee754/ldbl-128ibm/ldbl2mpn.c (__mpn_extract_long_double):
	Correct handling of denormals.  Avoid undefined shift behaviour.
	Correct normalisation of low mantissa when low double is denormal.
	* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h
	(ldbl_extract_mantissa): Likewise.  Comment.  Use uint64_t* for hi64.
	(ldbl_insert_mantissa): Make both hi64 and lo64 parms uint64_t.
	Correct normalisation of low mantissa.  Test for overflow of high
	mantissa and normalise.
	(ldbl_nearbyint): Use more readable constant for two52.
	* sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c
	(__mpn_construct_long_double): Fix test for overflow of high
	mantissa and correct normalisation.  Avoid undefined shift.
2013-10-04 10:30:56 +09:30
Alan Modra
9605ca6c08 IBM long double mechanical changes to support little-endian
http://sourceware.org/ml/libc-alpha/2013-07/msg00001.html

This patch starts the process of supporting powerpc64 little-endian
long double in glibc.  IBM long double is an array of two ieee
doubles, so making union ibm_extended_long_double reflect this fact is
the correct way to access fields of the doubles.

	* sysdeps/ieee754/ldbl-128ibm/ieee754.h
	(union ibm_extended_long_double): Define as an array of ieee754_double.
	(IBM_EXTENDED_LONG_DOUBLE_BIAS): Delete.
	* sysdeps/ieee754/ldbl-128ibm/printf_fphex.c: Update all references
	to ibm_extended_long_double and IBM_EXTENDED_LONG_DOUBLE_BIAS.
	* sysdeps/ieee754/ldbl-128ibm/e_exp10l.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_expl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/ldbl2mpn.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/strtold_l.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/x2y2m1l.c: Likewise.
2013-10-04 10:28:42 +09:30
Andreas Schwab
b2179107f3 Properly cache the result from looking up the nss database config 2013-09-30 10:29:13 +02:00
Mike Frysinger
47f28d0a66 tst-fanotify: fix style
Reported-by: Andreas Jaeger <aj@suse.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-09-28 23:53:50 -04:00
Patrick 'P. J.' McDermott
0a834ddecb don't use Bash-specific ${parameter/pattern/string} expansion
sysdeps/unix/make-syscalls.sh and sysdeps/unix/Makefile use GNU Bash's
${parameter/pattern/string} parameter expansion.  Non-Bash shells (e.g.
dash or BusyBox ash when built with CONFIG_ASH_BASH_COMPAT disabled)
don't support this expansion syntax.  So glibc will fail to build when
$(SHELL) expands to a path that isn't provided by Bash.

An example build failure:

    for dir in [...]; do \
      test -f $dir/syscalls.list && \
      { sysdirs='[...]' \
        asm_CPP='gcc -c    -I[...]   -D_LIBC_REENTRANT -include include/libc-symbols.h       -DASSEMBLER  -g -Wa,--noexecstack   -E -x assembler-with-cpp' \
        /bin/sh sysdeps/unix/make-syscalls.sh $dir || exit 1; }; \
      test $dir = sysdeps/unix && break; \
    done > [build-dir]/sysd-syscallsT
    sysdeps/unix/make-syscalls.sh: line 273: syntax error: bad substitution

This patch simply replaces the three instances of the Bash-only syntax
in these files with an echo and sed command substitution.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-09-28 23:03:09 -04:00
Kaz Kojima
80a83dd70e Add SH implementation of stackguard-macros.h. 2013-09-27 10:59:02 +09:00
Ondřej Bílka
dc1a95c730 Faster strrchr. 2013-09-26 19:23:01 +02:00
Adhemerval Zanella
5ebbff8fd1 PowerPC: Fix POINTER_CHK_GUARD thread register for PPC64 2013-09-25 13:43:04 -05:00
Will Newton
f02eed105c sysdeps/mach/hurd/i386/tls.h: Remove TLS_INIT_TP_EXPENSIVE.
This define was removed from the rest of the tree eight years ago.

ChangeLog:

2013-09-24  Will Newton  <will.newton@linaro.org>

	* sysdeps/mach/hurd/i386/tls.h (TLS_INIT_TP_EXPENSIVE): Remove
	macro.
2013-09-24 09:25:53 +01:00
Carlos O'Donell
0b1f8e3564 BZ #15754: Fix test case for ARM.
Statically built binaries use __pointer_chk_guard_local,
while dynamically built binaries use __pointer_chk_guard.
Provide the right definition depending on the test case
we are building.
2013-09-23 01:44:38 -04:00
Carlos O'Donell
c61b4d41c9 BZ #15754: CVE-2013-4788
The pointer guard used for pointer mangling was not initialized for
static applications resulting in the security feature being disabled.
The pointer guard is now correctly initialized to a random value for
static applications. Existing static applications need to be
recompiled to take advantage of the fix.

The test tst-ptrguard1-static and tst-ptrguard1 add regression
coverage to ensure the pointer guards are sufficiently random
and initialized to a default value.
2013-09-23 00:52:09 -04:00
Andreas Schwab
5bb43a4319 Make __ffs hidden 2013-09-20 21:25:31 +02:00
Siddhesh Poyarekar
4aafb73cb2 Consolidate common code into macros
Consolidated common Taylor series polynomials into macros in s_sin.c
to make it a bit cleaner.
2013-09-19 20:34:45 +05:30
Siddhesh Poyarekar
b348e1e3a6 Consolidate sin/cos table lookup code 2013-09-19 16:51:02 +05:30
Siddhesh Poyarekar
6cce25f814 Consolidate sin/cos computation for large inputs 2013-09-19 16:45:27 +05:30
Siddhesh Poyarekar
5eea0404a8 Remove redundant goto lines 2013-09-19 16:43:53 +05:30
Maciej W. Rozycki
9c21573c02 MIPS: IEEE 754-2008 NaN encoding support
It has been a long practice for software using IEEE 754 floating-point
arithmetic run on MIPS processors to use an encoding of Not-a-Number
(NaN) data different to one used by software run on other processors.
And as of IEEE 754-2008 revision [1] this encoding does not follow one
recommended in the standard, as specified in section 6.2.1, where it
is stated that quiet NaNs should have the first bit (d1) of their
significand set to 1 while signalling NaNs should have that bit set to
0, but MIPS software interprets the two bits in the opposite manner.

As from revision 3.50 [2][3] the MIPS Architecture provides for
processors that support the IEEE 754-2008 preferred NaN encoding format.
As the two formats (further referred to as "legacy NaN" and "2008 NaN")
are incompatible to each other, tools have to provide support for the
two formats to help people avoid using incompatible binary modules.

The change is comprised of two functional groups of features, both of
which are required for correct support.

1. Dynamic linker support.

   To enforce the NaN encoding requirement in dynamic linking a new ELF
   file header flag has been defined.  This flag is set for 2008-NaN
   shared modules and executables and clear for legacy-NaN ones.  The
   dynamic linker silently ignores any incompatible modules it
   encounters in dependency processing.

   To avoid unnecessary processing of incompatible modules in the
   presence of a shared module cache, a set of new cache flags has been
   defined to mark 2008-NaN modules for the three ABIs supported.
   Changes to sysdeps/unix/sysv/linux/mips/readelflib.c have been made
   following an earlier code quality suggestion made here:

   http://sourceware.org/ml/libc-ports/2009-03/msg00036.html

   and are therefore a little bit more extensive than the minimum
   required.

   Finally a new name has been defined for the dynamic linker so that
   2008-NaN and legacy-NaN binaries can coexist on a single system that
   supports dual-mode operation and that a legacy dynamic linker that
   does not support verifying the 2008-NaN ELF file header flag is not
   chosen to interpret a 2008-NaN binary by accident.

2. Floating environment support.

   IEEE 754-2008 features are controlled in the Floating-Point Control
   and Status (FCSR) register and updates are needed to floating
   environment support so that the 2008-NaN flag is set correctly and
   the kernel default, inferred from the 2008-NaN ELF file header flag
   at the time an executable is loaded, respected.

As the NaN encoding format is a property of GCC code generation that is
both a user-selected GCC configuration default and can be overridden
with GCC options, code that needs to know what NaN encoding standard it
has been configured for checks for the __mips_nan2008 macro that is
defined internally by GCC whenever the 2008-NaN mode has been selected.
This mode is determined at the glibc configuration time and therefore a
few consistency checks have been added to catch cases where compilation
flags have been overridden by the user.

The 2008 NaN set of features relies on kernel support as the in-kernel
floating-point emulator needs to be aware of the NaN encoding used even
on hard-float processors and configure the FPU context according to the
value of the 2008 NaN ELF file header flag of the executable being
started.  As at this time work on kernel support is still in progress
and the relevant changes have not made their way yet to linux.org master
repository.

Therefore the minimum version supported has been artificially set to
10.0.0 so that 2008-NaN code is not accidentally run on a Linux kernel
that does not suppport it.  It is anticipated that the version is
adjusted later on to the actual initial linux.org kernel version to
support this feature.  Legacy NaN encoding support is unaffected, older
kernel versions remain supported.

[1] "IEEE Standard for Floating-Point Arithmetic", IEEE Computer
    Society, IEEE Std 754-2008, 29 August 2008

[2] "MIPS Architecture For Programmers, Volume I-A: Introduction to the
    MIPS32 Architecture", MIPS Technologies, Inc., Document Number:
    MD00082, Revision 3.50, September 20, 2012

[3] "MIPS Architecture For Programmers, Volume I-A: Introduction to the
    MIPS64 Architecture", MIPS Technologies, Inc., Document Number:
    MD00083, Revision 3.50, September 20, 2012
2013-09-18 21:33:50 +01:00
Joseph Myers
24d22e65b3 e500 port: fpu_control.h. 2013-09-18 14:47:49 +00:00
Joseph Myers
2e071de0f7 e500 port: setjmp/longjmp. 2013-09-18 14:46:57 +00:00
Joseph Myers
d13ef0662f Don't force -msoft-float for powerpc --without-fp. 2013-09-18 14:44:34 +00:00
Siddhesh Poyarekar
97a0650b8a Format sincos32.c 2013-09-18 13:01:34 +05:30
Joseph Myers
11ca09e932 Fix powerpc fpu_control.h namespace and parenthesis issues (bug 15966). 2013-09-17 21:28:19 +00:00
Ondřej Bílka
5905e7b3e2 Faster strchr implementation. 2013-09-11 17:07:38 +02:00
Adhemerval Zanella
ddf985af47 Update powerpc-fpu ULPs. 2013-09-11 07:38:57 -05:00
Andreas Schwab
ffdd31816a Add O_TMPFILE to <fcntl.h> 2013-09-11 11:52:46 +02:00
Ondřej Bílka
c7cabd1355 Remove DO_NOT_USE_THIS conditionals. 2013-09-10 19:15:33 +02:00
Carlos O'Donell
6c82a2f8d7 Coordinate IPv6 definitions for Linux and glibc
This change synchronizes the glibc headers with the Linux kernel
headers and arranges to coordinate the definition of structures
already defined the Linux kernel UAPI headers.

It is now safe to include glibc's netinet/in.h or Linux's linux/in6.h
in any order in a userspace application and you will get the same
ABI. The ABI is guaranteed by UAPI and glibc.
2013-09-06 01:02:30 -04:00
Adhemerval Zanella
5430fc65a1 PowerPC: fix POWER7 memrchr for some large inputs 2013-09-05 09:32:56 -05:00
Mike Frysinger
bb8ea71379 tst-fanotify: skip when we get back EPERM
Since fanotify_init requires CAP_SYS_ADMIN in order to work (which usually
means running as root), we need to handle that error case too.

Reported-by: Andreas Jaeger <aj@suse.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-09-05 03:04:01 -04:00
Joseph Myers
3f2e46a494 Remove --disable-versioning. 2013-09-04 15:25:42 +00:00
Joseph Myers
ffa3cd7f1a Fix lgammaf spurious underflow (bug 15427). 2013-09-03 15:32:54 +00:00
Ondřej Bílka
8f02859f17 Add unaligned strcmp. 2013-09-03 16:27:10 +02:00
Mike Frysinger
ac44401205 tst-fanotify: new simple test
Basic test for the fanotify functions.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-09-02 23:22:23 -04:00
Joseph Myers
b7835e3223 Fix spurious jnf underflows (bug 14155). 2013-09-02 14:51:24 +00:00
Ondřej Bílka
8220f4f008 Fix typo. 2013-09-02 11:29:34 +02:00
Ondřej Bílka
f24a6d086b Fix then/than typos. 2013-08-30 18:10:31 +02:00
Ondřej Bílka
382466e04e Fix typos. 2013-08-30 18:08:59 +02:00
Ondřej Bílka
0186c6e97e Fix rawmemchr regression on bulldozer. 2013-08-30 10:14:37 +02:00
Ondřej Bílka
d4e16af1ae Remove aix specific files. 2013-08-29 18:11:45 +02:00
Thomas Schwinge
8833598053 Hurd: Add ESUCCESS error_t value. 2013-08-29 12:22:30 +02:00
Samuel Thibault
ed479b02c2 Hurd: Use __executable_start symbol instead of _start.
_start points to the first instruction, not to the ELF header.
__executable_start does point on the ELF header.
2013-08-29 12:22:19 +02:00
Thomas Schwinge
d821f07c9e Support ELFOSABI_GNU on all GNU systems. 2013-08-29 12:22:18 +02:00
Thomas Schwinge
c54290cf08 Use ELFOSABI_GNU instead of ELFOSABI_LINUX. 2013-08-29 12:22:17 +02:00
Thomas Schwinge
0007fc9bdd [BZ #15522] strtod ("nan(N)") returning a sNaN in some cases 2013-08-29 12:22:10 +02:00
Ondřej Bílka
6f65e66895 Fix typos. 2013-08-29 09:11:45 +02:00
Siddhesh Poyarekar
3a30923983 Use __glibc_unlikely instead of __builtin_expect (..., 0) 2013-08-28 09:44:19 +05:30
Roland McGrath
5d1f0a09f3 True stub __ifreq. 2013-08-27 10:42:52 -07:00
Roland McGrath
6fcf28b352 Clean up __libc_sa_len helper. 2013-08-27 10:34:16 -07:00
Roland McGrath
e041fb8b65 Replace generic bits/socket.h with 4.4 file. 2013-08-27 10:33:15 -07:00
Roland McGrath
8cc3269f95 Flesh out 4.4 bits/socket.h with SOCK_CLOEXEC, SOCK_NONBLOCK. 2013-08-27 10:32:30 -07:00
Andreas Schwab
5d228a436a Fix handling LC_CTYPE nonascii-case fallback in i686 SSE4.2 and SSSE3 strcasecmp/strncasecmp 2013-08-27 12:19:03 +02:00
Ondřej Bílka
c0c3f78afb Fix typos. 2013-08-21 19:48:48 +02:00
Liubov Dmitrieva
46ed103824 i686: Skip SSE4_2 version for strcmp, strncmp, strncase, strcasecmp
if bit_Slow_SSE4_2 is set.
2013-08-21 18:25:08 +04:00
Adhemerval Zanella
d400dcac5e PowerPC: fix backtrace to handle signal trampolines
This patch fixes backtrace for PPC32 and PPC64 to correctly handle
signal trampolines. The 'debug/tst-backtrace6.c' also check for
SA_SIGINFO handling, where is triggers another vDSO symbols for PPC32.
2013-08-20 15:05:49 -05:00
Joseph Myers
c980f2f4fe Fix cproj handling of (finite, NaN) arguments (bug 15531). 2013-08-20 19:41:15 +00:00
Joseph Myers
0716c4fc9f Include <string.h> in sysdeps/unix/sysv/linux/mmap64.c. 2013-08-20 19:38:23 +00:00
Joseph Myers
42c8fdd8f1 Use __getpagesize and __ffs in MMAP2_PAGE_SHIFT == -1 case of mmap64. 2013-08-20 16:43:59 +00:00
Andreas Krebbel
4e39af6eca * sysdeps/unix/sysv/linux/s390/sys/procfs.h (struct elf_prstatus):
Align 32 bit compat elf_greg to 8 bytes.
2013-08-20 14:13:59 +02:00
Florian Weimer
91ce40854d CVE-2013-4237, BZ #14699: Buffer overflow in readdir_r
* sysdeps/posix/dirstream.h (struct __dirstream): Add errcode
	member.
	* sysdeps/posix/opendir.c (__alloc_dir): Initialize errcode
	member.
	* sysdeps/posix/rewinddir.c (rewinddir): Reset errcode member.
	* sysdeps/posix/readdir_r.c (__READDIR_R): Enforce NAME_MAX limit.
	Return delayed error code.  Remove GETDENTS_64BIT_ALIGNED
	conditional.
	* sysdeps/unix/sysv/linux/wordsize-64/readdir_r.c: Do not define
	GETDENTS_64BIT_ALIGNED.
	* sysdeps/unix/sysv/linux/i386/readdir64_r.c: Likewise.
	* manual/filesys.texi (Reading/Closing Directory): Document
	ENAMETOOLONG return value of readdir_r.  Recommend readdir more
	strongly.
	* manual/conf.texi (Limits for Files): Add portability note to
	NAME_MAX, PATH_MAX.
	(Pathconf): Add portability note for _PC_NAME_MAX, _PC_PATH_MAX.
2013-08-16 09:40:34 +02:00
Andreas Schwab
ca0a6bc4c5 Fix cbrtl for ldbl-96 2013-08-13 09:45:02 +02:00
Adhemerval Zanella
7b1f8b581f PowerPC: use _dl_static_init to set GLRO(gl_pagesize)
This patch fixes dlfcn/tststatic5 for PowerPC where pagesize
variable was not properly initialized in certain cases. This patch
is based on other architecture code.
2013-07-23 07:39:57 -05:00
Andreas Krebbel
a8fc7a03a8 S/390: ULPs update. 2013-07-22 09:51:52 +02:00
Carlos O'Donell
e4608715e6 CVE-2013-2207, BZ #15755: Disable pt_chown.
The helper binary pt_chown tricked into granting access to another
user's pseudo-terminal.

Pre-conditions for the attack:

 * Attacker with local user account
 * Kernel with FUSE support
 * "user_allow_other" in /etc/fuse.conf
 * Victim with allocated slave in /dev/pts

Using the setuid installed pt_chown and a weak check on whether a file
descriptor is a tty, an attacker could fake a pty check using FUSE and
trick pt_chown to grant ownership of a pty descriptor that the current
user does not own.  It cannot access /dev/pts/ptmx however.

In most modern distributions pt_chown is not needed because devpts
is enabled by default. The fix for this CVE is to disable building
and using pt_chown by default. We still provide a configure option
to enable hte use of pt_chown but distributions do so at their own
risk.
2013-07-21 15:39:55 -04:00
David S. Miller
da2d62df77 Update Sparc ULPs.
* sysdeps/sparc/fpu/libm-test-ulps: Update ULPs to handle minor
	difference between 32-bit and 64-bit.
2013-07-20 16:47:28 -07:00
Carlos O'Donell
d7e06450b9 BZ #15711: Avoid circular dependency for syscall.h
The generated header is compiled with `-ffreestanding' to avoid any
circular dependencies against the installed implementation headers.
Such a dependency would require the implementation header to be
installed before the generated header could be built (See bug 15711).
In current practice the generated header dependencies do not include
any of the implementation headers removed by the use of `-ffreestanding'.

---

2013-07-15  Carlos O'Donell  <carlos@redhat.com>

	[BZ #15711]
	* sysdeps/unix/sysv/linux/Makefile ($(objpfx)bits/syscall%h):
	Avoid system header dependency with -ffreestanding.
	($(objpfx)bits/syscall%d): Likewise.
2013-07-16 17:55:43 -04:00
David S. Miller
c61f8513f7 Full from-scratch rebuild of sparc ULPs.
* sysdeps/sparc/fpu/libm-test-ulps: Regenerate from scratch.
2013-07-07 22:15:36 -07:00
Jeroen Albers
72c90ed01f Update x86 and x86_64 ulps on AMD FX-8350 with GCC 4.8.1. 2013-07-05 12:58:20 +00:00
Adhemerval Zanella
3f16954315 Update powerpc-fpu ULPs. 2013-07-04 07:14:44 -05:00
Andreas Jaeger
521c6785e1 Sync sys/ptrace with Linux 3.10 2013-07-04 09:49:14 +02:00
Allan McRae
d2cc15cb50 Update i386 ULPs.
* sysdeps/i386/fpu/libm-test-ulps: Update.
2013-07-03 12:45:40 +10:00
David S. Miller
3aaeeca7a9 Update sparc ULPs.
* sysdeps/sparc/fpu/libm-test-ulps: Update.
2013-07-02 16:41:17 -07:00
Markus Trippelsdorf
5314ed1afd Update x86_64 ULPs. 2013-07-02 22:01:13 +00:00
Joseph Myers
67338156ea Regenerate x86 and x86_64 ulps. 2013-07-02 20:01:15 +00:00
H.J. Lu
1c81621c5b Enable static 32-bit SSE4.2 strcasecmp/strncasecmp 2013-07-02 08:06:04 -07:00
Liubov Dmitrieva
6308fd9a46 Skip SSE4.2 versions on Intel Silvermont
SSE2/SSSE3 versions are faster than SSE4.2 versions on Intel Silvermont.
2013-06-28 15:31:40 -07:00
Ryan S. Arnold
89cd956937 PowerPC: Define AT_HWCAP2 bits and AT_HWCAP2 handling for POWER8. 2013-06-28 16:52:49 -05:00
Ryan S. Arnold
1ae8bfe07c Add GLRO(dl_hwcap2) for new AT_HWCAP2 auxv_t a_type. 2013-06-28 16:50:48 -05:00
Joseph Myers
8fbec01098 Consistently use page_shift in sysdeps/unix/sysv/linux/mmap64.c. 2013-06-28 21:45:11 +00:00
Liubov Dmitrieva
11b8a0e1d7 Fix buffers overrun in x86_64 memcmp-ssse3.S 2013-06-26 12:31:51 -07:00
Mike Frysinger
17db6e8d6b [BZ #10283] localedef: align fixed maps to SHMLBA
Many Linux arches require fixed mmaps to be aligned higher than pagesize,
so use the SHMLBA define as it represents this quantity exactly.

This fixes spurious errors seen on those arches like:
cannot map archive header: Invalid argument

URL: http://sourceware.org/bugzilla/show_bug.cgi?id=10283
Reported-by: CHIKAMA Masaki <masaki.chikama@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-06-24 20:26:58 -04:00
Ryan S. Arnold
2f063a6e84 PowerPC: Enable POWER8 platform sans hwcap bits. 2013-06-24 15:33:32 -05:00
Joseph Myers
d8412221e6 Include <string.h> in sysdeps/unix/sysv/linux/libc_fatal.c. 2013-06-22 19:30:10 +00:00
Kaz Kojima
be09e8c9ec Add sh4 implementation of fegetexceptflag. 2013-06-21 18:07:31 +09:00
Roland McGrath
346d65b33a Rewrite sysd-rules generation using an awk script. 2013-06-17 09:55:21 -07:00
Joseph Myers
3711a167f6 Fix spurious "inexact" exceptions from dbl-64 sqrt (bug 15631). 2013-06-15 19:59:41 +00:00
Siddhesh Poyarekar
61dd6208fb New API to set default thread attributes
This patch introduces two new convenience functions to set the default
thread attributes used for creating threads.  This allows a programmer
to set the default thread attributes just once in a process and then
run pthread_create without additional attributes.
2013-06-15 12:24:15 +05:30
Liubov Dmitrieva
d086fc7ba0 Set fast unaligned load flag for new Intel microarchitecture
I have small patch for new Intel Silvermont machines.

http://newsroom.intel.com/community/intel_newsroom/blog/2013/05/06/intel-launches-low-power-high-performance-silvermont-microarchitecture

I checked this on my machine and see that strcpy, ... unaligned
versions are faster than ssse3 versions.
2013-06-14 20:46:15 +02:00
Siddhesh Poyarekar
747ef469ff Add rtld-memset.S for x86_64
Resolves: BZ #15627

Add an assembler version of rtld-memset to avoid using SSE registers.
2013-06-15 00:09:26 +05:30
Siddhesh Poyarekar
58206c6863 Improve precision of clock() function on Linux
Resolves #12515.

Use CLOCK_PROCESS_CPUTIME_ID instead of times to get better precision
in the value returned by clock.
2013-06-13 09:54:35 +05:30
Adhemerval Zanella
6a97b62a5b Fix unsafe compiler optimization
GCC 4.8 enables -ftree-loop-distribute-patterns at -O3 by default and
this optimization may transform loops into memset/memmove calls. Without
proper handling this may generate unexpected PLT calls on GLIBC.
This patch fixes by create memset/memmove alias to internal GLIBC
__GI_memset/__GI_memmove symbols.
2013-06-12 10:21:22 -05:00
Siddhesh Poyarekar
2506109403 Set/restore rounding mode only when needed
The most common use case of math functions is with default rounding
mode, i.e. rounding to nearest.  Setting and restoring rounding mode
is an unnecessary overhead for this, so I've added support for a
context, which does the set/restore only if the FP status needs a
change.  The code is written such that only x86 uses these.  Other
architectures should be unaffected by it, but would definitely benefit
if the set/restore has as much overhead relative to the rest of the
code, as the x86 bits do.

Here's a summary of the performance improvement due to these
improvements; I've only mentioned functions that use the set/restore
and have benchmark inputs for x86_64:

Before:

cos(): ITERS:4.69335e+08: TOTAL:28884.6Mcy, MAX:4080.28cy, MIN:57.562cy, 16248.6 calls/Mcy
exp(): ITERS:4.47604e+08: TOTAL:28796.2Mcy, MAX:207.721cy, MIN:62.385cy, 15543.9 calls/Mcy
pow(): ITERS:1.63485e+08: TOTAL:28879.9Mcy, MAX:362.255cy, MIN:172.469cy, 5660.86 calls/Mcy
sin(): ITERS:3.89578e+08: TOTAL:28900Mcy, MAX:704.859cy, MIN:47.583cy, 13480.2 calls/Mcy
tan(): ITERS:7.0971e+07: TOTAL:28902.2Mcy, MAX:1357.79cy, MIN:388.58cy, 2455.55 calls/Mcy

After:

cos(): ITERS:6.0014e+08: TOTAL:28875.9Mcy, MAX:364.283cy, MIN:45.716cy, 20783.4 calls/Mcy
exp(): ITERS:5.48578e+08: TOTAL:28764.9Mcy, MAX:191.617cy, MIN:51.011cy, 19071.1 calls/Mcy
pow(): ITERS:1.70013e+08: TOTAL:28873.6Mcy, MAX:689.522cy, MIN:163.989cy, 5888.18 calls/Mcy
sin(): ITERS:4.64079e+08: TOTAL:28891.5Mcy, MAX:6959.3cy, MIN:36.189cy, 16062.8 calls/Mcy
tan(): ITERS:7.2354e+07: TOTAL:28898.9Mcy, MAX:1295.57cy, MIN:380.698cy, 2503.7 calls/Mcy

So the improvements are:

cos: 27.9089%
exp: 22.6919%
pow: 4.01564%
sin: 19.1585%
tan: 1.96086%

The downside of the change is that it will have an adverse performance
impact on non-default rounding modes, but I think the tradeoff is
justified.
2013-06-12 10:36:48 +05:30
Joseph Myers
f1d73d30df Add exception information to math-tests.h and use it in libm-test.inc. 2013-06-11 15:44:31 +00:00
Ryan S. Arnold
fac0c5f2b1 PowerPC: Merge ports/ dl-procinfo.[ch] with base. 2013-06-11 10:13:39 -05:00
Siddhesh Poyarekar
89fb683558 Fix symbol definitions for __clock_* functions
__clock_gettime and other __clock_* functions could result in an extra
PLT reference within libc.so if it actually gets used.  None of the
code currently uses them, which is why this probably went unnoticed.
2013-06-11 11:11:11 +05:30
Joseph Myers
0efa6f8b99 Add rounding mode information to math-tests.h and use it in libm-test.inc. 2013-06-10 12:34:49 +00:00
Joseph Myers
4902d2c3f7 Avoid trailing whitespace in sysdeps/gnu/errlist.c. 2013-06-08 14:55:32 +00:00
Joseph Myers
60d2f8f3c7 Use (void) in no-arguments function definitions. 2013-06-08 00:22:23 +00:00
Joseph Myers
2e09a79ada Avoid use of "register" as optimization hint. 2013-06-07 22:24:35 +00:00
Ondrej Bilka
350635a59a Fix leading whitespaces. 2013-06-06 20:36:07 +02:00
Joseph Myers
9c84384cc1 Remove trailing whitespace. 2013-06-05 20:44:03 +00:00
Siddhesh Poyarekar
4c60cb0c83 Skip modifying exception mask and flags in SET_RESTORE_ROUND_53BIT
We only need to set/restore rounding mode to ensure correct
computation for non-default rounding modes.
2013-06-05 13:56:19 +05:30
Joseph Myers
fab7ce3f5b Link extra-libs consistently with libc and ld.so. 2013-05-31 16:16:33 +00:00
Jeff Law
96945714ec [BZ #14256]
* manual/errno.texi (ESTALE): Update to account for more than
        just NFS file systems.
        * sysdeps/gnu/errlist.c: Regenerated.
2013-05-30 05:51:22 -06:00
Siddhesh Poyarekar
b937534868 Avoid crashing in LD_DEBUG when program name is unavailable
Resolves: #15465

The program name may be unavailable if the user application tampers
with argc and argv[].  Some parts of the dynamic linker caters for
this while others don't, so this patch consolidates the check and
fallback into a single macro and updates all users.
2013-05-29 21:34:12 +05:30
Adhemerval Zanella
5e056687df Update powerpc libm-test ULPs. 2013-05-28 08:39:00 -05:00
Thomas Schwinge
07b4c13d0b _dl_skip_args declaration cleanup.
* sysdeps/mach/hurd/dl-sysdep.c (_dl_sysdep_start:go): Don't
	declare _dl_skip_args.

Continuation of commit 8347c74cc5.
2013-05-26 19:48:25 +02:00
Thomas Schwinge
ec9dd97cec _dl_non_dynamic_init declaration cleanup.
* sysdeps/mach/hurd/i386/init-first.c (_dl_non_dynamic_init):
	Don't declare.

Continuation of commit bc16e260d0.
2013-05-26 18:53:19 +02:00
Joseph Myers
0323d08657 Fix ldbl-96 hypotl of subnormals (bug 15529). 2013-05-24 20:52:55 +00:00
Joseph Myers
dd4259b9f7 Test drem and pow10 in libm-test.inc. 2013-05-24 20:33:14 +00:00
Joseph Myers
4f8dfe270b Use same tests for isfinite/finite, lgamma/gamma. 2013-05-24 19:21:22 +00:00
Adhemerval Zanella
d116b7c414 PowerPC: Program Priority Register support
This patch add inline functions to change the Program Priority Register
from ISA 2.05.
2013-05-24 13:29:30 -05:00
Edjunior Machado
9323d39bae PowerPC: Add functions for shared resources hints. 2013-05-23 10:32:47 -05:00
Edjunior Barbosa Machado
85118d4de3 Update bits/siginfo.h with Linux hwpoison SIGBUS changes
Adds new SIGBUS error codes for hardware poison signals, syncing with
the current kernel headers (v3.9). It also adds si_trapno field for
alpha.
2013-05-22 14:19:49 -05:00
Joseph Myers
b50a71810b Don't include expected results in libm-test test names. 2013-05-22 11:49:36 +00:00
Siddhesh Poyarekar
3d04f5db20 Set EAI_SYSTEM only when h_errno is NETDB_INTERNAL
Fixes BZ #15339.

NSS_STATUS_UNAVAIL may mean that a necessary input resource is not
available.  This could occur in a number of cases including when the
network is down, system runs out of file descriptors, etc.  The
correct differentiator in such a case is the h_errno, which gives the
nature of failure.  In case of failures other than a simple 'not
found', we set h_errno as NETDB_INTERNAL and let errno be the
identifier for the exact error.
2013-05-21 21:54:41 +05:30
Ondrej Bilka
b2b671b677 Faster memset on x64
This implementation speed up memset in several ways. First is avoiding
expensive computed jump. Second is using fact that arguments of memset
are most of time aligned to 8 bytes.

Benchmark results on:
kam.mff.cuni.cz/~ondra/benchmark_string/memset_profile_result27_04_13.tar.bz2
2013-05-20 08:32:45 +02:00
Ondrej Bilka
2d48b41c8f Faster memcpy on x64.
We add new memcpy version that uses unaligned loads which are fast
on modern processors. This allows second improvement which is avoiding
computed jump which is relatively expensive operation.

Tests available here:
http://kam.mff.cuni.cz/~ondra/memcpy_profile_result27_04_13.tar.bz2
2013-05-20 08:24:41 +02:00
Joseph Myers
3e69426875 Fix nearbyint scheduling of arithmetic past fesetenv (bug 15490). 2013-05-19 18:40:25 +00:00
Joseph Myers
db62a90753 Handle sincos with generic libm-test logic. 2013-05-19 14:45:41 +00:00
Joseph Myers
bb38759d6d Fix remainder exceptions and directed-rounding results (bugs 15480, 15485). 2013-05-17 19:04:08 +00:00
Adhemerval Zanella
13d3b41a36 PowerPC: fix hypot/hypotf check for -INF 2013-05-17 08:15:59 -05:00
Maciej W. Rozycki
2848b10585 MIPS: soft-fp NaN representation corrections
[BZ #15442] This adds support for the inverse interpretation of the
quiet bit of IEEE 754 floating-point NaN data that some processors
use.  This includes in particular MIPS architecture processors; the
payload used for the canonical qNaN encoding is updated accordingly
so as not to interfere with the quiet bit.
2013-05-16 23:33:55 +01:00
Ryan S. Arnold
e054f49430 Add #include <stdint.h> for uint[32|64]_t usage (except installed headers). 2013-05-16 11:32:54 -05:00
Peter Collingbourne
1deff3dca1 Use movq for 64-bit operations
The EXTRACT_WORDS64 and INSERT_WORDS64 macros use movd for a 64-bit
operation.  Somehow gcc manages to turn this into movq, but LLVM won't.

2013-05-15  Peter Collingbourne  <pcc@google.com>

	* sysdeps/x86_64/fpu/math_private.h (MOVQ): New macro.
	(EXTRACT_WORDS64) Use where appropriate.
	(INSERT_WORDS64) Likewise.
2013-05-15 20:33:45 +02:00
Peter Collingbourne
791f3ba0db Use x constraints for operands to vfmaddss and vfmaddsd
While these instructions accept memory operands, only one operand
may be a memory operand.  Giving two operands xm constraints gives
the compiler the option of using memory for both operands, which
would result in invalid assembly code.  Using x for all operands is
more appropriate, as most x86_64 calling conventions will pass the
arguments in registers anyway.

2013-05-15  Peter Collingbourne  <pcc@google.com>

	* sysdeps/x86_64/fpu/multiarch/s_fma.c (__fma_fma4): Replace xm
	constraints with x constraints.
	* sysdeps/x86_64/fpu/multiarch/s_fmaf.c (__fmaf_fma4): Likewise.
2013-05-15 20:31:53 +02:00
Edjunior Machado
12fba011bd Update s390/bits/siginfo.h
2013-05-15  Edjunior Machado  <emachado@linux.vnet.ibm.com>

	* sysdeps/unix/sysv/linux/s390/bits/siginfo.h (siginfo_t):
	Remove si_trapno and add si_addr_lsb to _sifields.sigfault.
	(si_trapno): Remove macro.
	(si_addr_lsb): Define new macro.
	(BUS_MCEERR_AR, BUS_MCEERR_AO): Define new values.
2013-05-15 20:15:19 +02:00
David S. Miller
781fd74820 Update Sparc ULPs.
* sysdeps/sparc/fpu/libm-test-ulps: Update.
2013-05-14 15:44:29 -07:00
Siddhesh Poyarekar
0f7d347bd0 Make _LIB_VERSION a weak symbol
That way it can live alongside _LIB_VERSION in libieee.a for
statically compiled programs.

Resolves #14582.
2013-05-13 11:46:36 +05:30
Joseph Myers
601a3a5fd5 Convert TEST_ff_f tests from code to data. 2013-05-12 13:17:09 +00:00
Christian Grönke
7187d844a1 Add getgid.c for SH
[BZ #12387]
	* sysdeps/unix/sysv/linux/sh/getgid.c: New file.
2013-05-10 20:42:24 +02:00
Pino Toscano
f63fae7378 Hurd: add ST_NOATIME 2013-05-10 20:39:32 +02:00
Andreas Jaeger
8a67a4b343 Fix integer overflow in sysdeps/unix/sysv/linux/bits/sched.h
[BZ #15448]
	* sysdeps/unix/sysv/linux/bits/sched.h (__CPU_SET_S)
	(__CPU_CLR_S, __CPU_ISSET_S): Avoid integer overflow.
2013-05-10 20:28:40 +02:00
Joseph Myers
ed41ffefc3 Fix ldbl-128ibm cos range reduction near pi/2 (bug 15359). 2013-05-09 21:30:08 +00:00
Joseph Myers
d0213cd0b6 Fix ldbl-128 cos range reduction near pi/2 (bug 15429). 2013-05-09 21:28:54 +00:00
Adhemerval Zanella
e9a5e0fd54 Update powerpc libm-test ULPs 2013-05-08 15:06:56 -05:00
Joseph Myers
d8cd06db62 Improve tgamma accuracy (bugs 2546, 2560, 5159, 15426). 2013-05-08 11:58:18 +00:00
Roland McGrath
8347c74cc5 Declare _dl_skip_args in ldsodefs.h header. 2013-05-07 14:49:26 -07:00
Roland McGrath
a917305749 Fix glob64 broken by cleanup. 2013-05-06 17:11:12 -07:00
Roland McGrath
9723ffc524 Move dummy glob64.c alongside glob.c that defines glob64. 2013-05-06 16:11:11 -07:00
Roland McGrath
962e6658a3 Flesh out stub not-cancel.h file. 2013-05-06 16:03:35 -07:00
Roland McGrath
c74058300c Clean up POSIX.1 implementation of truncate. 2013-05-06 14:56:13 -07:00
Adhemerval Zanella
16e616a72f PowerPC: fix hypot/hypof FP exceptions
This patch fixes hypot/hypotf spurious floating-point exceptions
generate by internal operations.
2013-05-06 14:40:17 -05:00
Roland McGrath
d5e8275481 Split _dl_writev out from _dl_debug_vdprintf. 2013-05-06 11:30:41 -07:00
Roland McGrath
cc0e6ed81f Consolidate definitions of _FORTIFY_SOURCE wrappers for open{,64}{,at}. 2013-05-03 16:33:26 -07:00
Adhemerval Zanella
83e7640f6b PowerPC: Add time vDSO support
PowerPC kernel now provides a vDSO implementation for time syscall
(commit fcb41a2030abe0eb716ef0798035ef9562097f42). This patch changes
time syscall wrapper to use the vDSO when available. It also changes
the default non vDSO time on PowerPC to use sysdeps/posix/time.c
(since gettimeofday is a vDSO call).
2013-05-03 15:04:54 -05:00
Andreas Jaeger
164fd39d05 Sync with Linux 3.9
* sysdeps/gnu/netinet/tcp.h (TCP_TIMESTAMP): New value, from
	Linux 3.9.
	* sysdeps/unix/sysv/linux/bits/socket.h (PF_VSOCK, AF_VSOCK):
	Add.
	(PF_MAX): Adjust for VSOCK change.
2013-05-03 20:52:00 +02:00
Adhemerval Zanella
8237f48c90 Update powerpc libm-test ULPs 2013-05-03 07:33:49 -05:00
David S. Miller
d422395e31 Update Sparc ULPs.
* sysdeps/sparc/fpu/libm-test-ulps: Update.
2013-05-02 12:25:28 -07:00
Roland McGrath
1324e37f2e Add missing #include in sysdeps/posix/opendir.c. 2013-05-01 09:27:09 -07:00
Joseph Myers
10de07f5fd Fix catan, catanh spurious underflows (bug 15423). 2013-05-01 10:07:00 +00:00
Adhemerval Zanella
cb4d54147e Update powerpc libm-test ULPs 2013-04-30 08:51:02 -05:00
Joseph Myers
caf84319c1 Fix catan, catanh inaccuracy from atan2 denominators near 0 (bug 15416). 2013-04-30 11:27:35 +00:00
Siddhesh Poyarekar
6dbe713d85 Format s_sin.c 2013-04-30 14:18:57 +05:30
Adhemerval Zanella
7e7b6f36a9 Update powerpc libm-test ULPs 2013-04-29 12:10:03 -05:00
Joseph Myers
5b4217d71f Fix catan, catanh spurious overflows (bug 15409). 2013-04-27 14:57:41 +00:00
Allan McRae
4721b2d1ca Update i386 libm-test ULPs 2013-04-27 15:13:12 +10:00
Adhemerval Zanella
aa630f590c PowerPC: modf optimization fix
This patch fix the 3c0265394d commits
by correctly setting minimum architecture for modf PPC optimization
to power5+ instead of power5 (since only on power5+ round/ceil will
be inline to inline assembly).
2013-04-26 13:00:56 -05:00
Markus Trippelsdorf
1b8359836d Update x86_64 ULPs
2013-04-26  Markus Trippelsdorf  <markus@trippelsdorf.de>

	* sysdeps/x86_64/fpu/libm-test-ulps: Update.
2013-04-26 09:30:46 +02:00
Joseph Myers
73709b2611 Move x86_64-specific audit tests to sysdeps/x86_64/. 2013-04-25 19:23:11 +00:00
Paul Pluzhnikov
1ef74943ce Get rid of __STDC_FORMAT_MACROS, __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS 2013-04-25 11:08:31 -07:00
Joseph Myers
2f38fbfe09 Fix catan, catanh inaccuracy through use of log (bug 15394). 2013-04-24 18:49:13 +00:00
Roland McGrath
d6f9bc519d Fix name space use in last commit. 2013-04-23 15:57:25 -07:00
Roland McGrath
87f51853ce Add generic POSIX implementation of C11 timespec_get. 2013-04-23 15:28:59 -07:00
Adhemerval Zanella
3c0265394d PowerPC: modf optimization
This patch implements modf/modff optimization for POWER by focus
on FP operations instead of relying in integer ones.
2013-04-23 13:38:52 -05:00
Heiko Carstens
5c95f7b66b S/390: Change struct statfs[64] member types to unsigned values
Kay Sievers reported that coreutils' stat tool has a problem with
s390's statfs[64] definition:

> The definition of struct statfs::f_type needs a fix. s390 is the only
> architecture in the kernel that uses an int and expects magic
> constants lager than INT_MAX to fit into.
>
> A fix is needed to make Fedora boot on s390, it currently fails to do
> so. Userspace does not want to add code to paper-over this issue.

[...]

> Even coreutils cannot handle it:
>   #define RAMFS_MAGIC  0x858458f6
>   # stat -f -c%t /
>   ffffffff858458f6
>
>   #define BTRFS_SUPER_MAGIC 0x9123683E
>   # stat -f -c%t /mnt
>   ffffffff9123683e

The bug is caused by an implicit sign extension within the stat tool:

out_uint_x (pformat, prefix_len, statfsbuf->f_type);

where the format finally will be "%lx".
A similar problem can be found in the 'tail' tool.
s390 is the only architecture which has an int type f_type member in
struct statfs[64]. Other architectures have either unsigned ints or
long values, so that the problem doesn't occur there.

Therefore change the type of the f_type member to unsigned int, so
that we get zero extension instead sign extension when assignment to
a long value happens.

Reported-by: Kay Sievers <kay@vrfy.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2013-04-23 08:59:35 +02:00
Siddhesh Poyarekar
2169712d9c Minor cleanup in getaddrinfo
Replace repeated computations of alloca size with a local variable
that stores the computed value.
2013-04-22 10:24:00 +05:30
Adam Conrad
ccdad15df5 Remove __wur from setfsuid and setfsgid. 2013-04-18 23:58:16 -06:00
Carlos O'Donell
0f122b8d12 Configuring for i386 is no longer supported.
We no longer support configuring for i386, nor do we
elide such a configuration to i686. Configuring with
i386-* is a failure, and we provide an example of
how to fix that.

---

2013-04-17  Carlos O'Donell  <carlos@redhat.com>

	* configure.in: Remove i386 configure warning. Remove i386 case.
	* configure: Regenerate.
	* sysdeps/i386/configure.in: Raise error if config_machine is i386.
	Add example to error message.
	* sysdeps/i386/configure: Regenerate.
2013-04-17 17:13:20 -07:00
Roland McGrath
477925062f BZ#15361: Make aio_fsync not check open modes. 2013-04-12 13:11:20 -07:00
Carlos O'Donell
aba5e333d4 libm-test.inc: Fix tests where cos(PI/2) != 0.
The value of PI is never exactly PI in any floating point representation,
and the value of PI/2 is never PI/2. It is wrong to expect cos(M_PI_2l)
to return 0, instead it will return an answer that is  non-zero because
M_PI_2l doesn't round to exactly PI/2 in the type used.

That is to say that the correct answer is to do the following:
* Take PI or PI/2.
* Round to the floating point representation.
* Take the rounded value and compute an infinite precision cos or sin.
* Use the rounded result of the infinite precision cos or sin as the
  answer to the test.

I used printf to do the type rounding, and Wolfram's Alpha to do the
infinite precision cos calculations.

The following changes bring x86-64 and x86 to 1/2 ulp for two tests.
It shows that the x86 cos implementation is quite good, and that
our test are flawed.

Unfortunately given that the rounding errors are type dependent we
need to fix this for each type. No regressions on x86-64 or x86.

---

2013-04-11  Carlos O'Donell  <carlos@redhat.com>

	* math/libm-test.inc (cos_test): Fix PI/2 test.
	(sincos_test): Likewise.
	* sysdeps/x86_64/fpu/libm-test-ulps: Regenerate.
	* sysdeps/i386/fpu/libm-test-ulps: Regenerate.
2013-04-11 08:52:18 -04:00
Roland McGrath
61c23e6234 BZ#14280: Fix Hurd ioctl macro to avoid warning. 2013-04-08 14:31:38 -07:00
Carlos O'Donell
a01f19c8fb i386: Fail at configure time for i386 builds.
This change does two things:

* Treats a target i386-* as if it were i686.
* Fails configure if the user is generating code
  for i386.

We no longer support i386 code-generation because the i386
lacks the atomic operations we need in glibc.

You can still configure for i386-*, but you get i686 code.

You can't build with --march=i386, --mtune=i386 or a compiler
that defaults to i386 code-generation.

I've added two i386 entries in the master todo list to discuss
merging and renaming:
http://sourceware.org/glibc/wiki/Development_Todo/Master#i386

The failure modes are fail-safe here. You compile for i386,
get i686, and try to run on i386 and it fails. The configure
log has a warning saying we elided to i686. There is no situation
that I can see where we run into any serious problems.

The patch makes the current state better in that we get less
confused users and we build successfully in more default
configurations.

The next enhancement would be to add --march=i?86
as suggested in #c20 of BZ#10062 for any i?86-* builds, which
would solve the problem of a 32-bit compiler that defaults to
i386 code-gen and glibc configured for i686-* target. Which
previously failed at build time, and now will fail at configure
time (requires adding --march=i686).

Updated NEWS with BZ #10060 and #10062.

No regressions.

---

2013-04-06  Carlos O'Donell  <carlos@redhat.com>

	[BZ #10060, #10062]
	* aclocal.m4 (LIBC_COMPILER_BUILTIN_INLINED): New macro.
	* sysdeps/i386/configure.in: Use LIBC_COMPILER_BUILTIN_INLINED and
	fail configure if __sync_val_compare_and_swap is not inlined.
	* sysdeps/i386/configure: Regenerate.
	* configure.in: Build for i686 when configured for i386.
	* configure: Regenerate.
	* README: Remove i386 reference.
2013-04-06 12:00:35 -04:00
Carlos O'Donell
24116fcdbe s390/s390x: Undef PSEUDO before redef.
The s390 and s390x sysdep.h files include the more generic sysdep.h.
The more generic sysdep.h defines PSEUDO. This causes an annoying
CPP warning saying the PSEUDO was redefined. This patch removes the
warning by undefining PSEUDO before the redefinition. This is in line
with what all the other machines do.

---

2013-04-06  Carlos O'Donell  <carlos@redhat.com>

	* sysdeps/s390/s390-32/sysdep.h: Undefine PSEUDO before redefinition.
	* sysdeps/s390/s390-64/sysdep.h: Likewise.
2013-04-06 10:53:54 -04:00
Thomas Schwinge
a1cbf437a5 [BZ #14686, #15336] Fix standard compliance. Don't use hard-coded qNaN values. 2013-04-05 22:34:52 +02:00
Thomas Schwinge
8b43a0c9f2 [BZ #15335, #15342] Fix standard compliance. Don't use hard-coded qNaN values. 2013-04-05 22:27:29 +02:00
Thomas Schwinge
d91da4ce87 Remove unreachable code.
The case of y == 0 is handled at the beginning of the function.
2013-04-05 21:30:28 +02:00
Thomas Schwinge
bf0f50dfc6 Remove unused hard-coded qNaN definition. 2013-04-05 21:28:03 +02:00
Andreas Schwab
1cef1b1908 Fix stack overflow in getaddrinfo with many results 2013-04-03 17:39:15 +02:00
Thomas Schwinge
74d87055bf Refer to two GCC PRs. 2013-04-03 14:13:44 +02:00
Siddhesh Poyarekar
c871eccd1e Remove TWO
Minor cleanup to remove the macro TWO and use the value directly
instead.
2013-04-03 15:47:01 +05:30
Siddhesh Poyarekar
d755bba40f Preserve errno across _PC_CHOWN_RESTRICTED call on XFS
Fix BZ #15305.

On kernel versions earlier than 2.6.29, the Linux kernel exported a
sysctl called restrict_chown for xfs, which could be used to allow
chown to users other than the owner.  2.6.29 removed this support,
causing the open_not_cancel_2 to fail and thus modify errno.  The fix
is to save and restore errno so that the caller sees it as unmodified.

Additionally, since the code to check the sysctl is not useful on
newer kernels, we add an ifdef so that in future the code block gets
rmeoved completely.
2013-04-03 10:56:45 +05:30
Joseph Myers
52ce486045 Fix cacosh inaccuracy and spurious exceptions (bug 15327). 2013-04-02 22:54:00 +00:00
Siddhesh Poyarekar
e7906a4789 Use mantissa_t in mpexp 2013-04-02 17:53:09 +05:30
Thomas Schwinge
572676160d New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
It is based on draft TS 18661 and currently enabled as a GNU extension.
2013-04-02 13:51:02 +02:00
Adhemerval Zanella
60c414c346 PowerPC: remove branch prediction from rint implementation
The branch prediction hints is actually hurts performance in this case.
The assembly implementation make two assumptions: 1. 'fabs (x) < 2^52'
is unlikely and 2. 'x > 0.0' is unlike (if 1. is true). Since it a
general floating point function, expected input is not bounded and then
it is better to let the hardware handle the branches.
2013-04-01 06:36:51 -05:00
Joseph Myers
ccc8cadf75 Fix casinh inaccuracy for imaginary part < 1.0, real part small (bug 10357). 2013-03-30 13:31:53 +00:00
Siddhesh Poyarekar
0d1029de12 Remove usage of ONE macro
I missed this instance, which caused a build failure in powerpc.
2013-03-29 16:53:05 +05:30
Siddhesh Poyarekar
c2d94018c6 Remove ONE and MONE 2013-03-29 16:40:36 +05:30
Siddhesh Poyarekar
27ec37f185 Format s_tan.c 2013-03-29 16:38:27 +05:30
Siddhesh Poyarekar
a64d7e0efb Remove ZERO and MZERO macros 2013-03-29 16:37:26 +05:30
Siddhesh Poyarekar
d26dd3eb00 Format s_atan.c 2013-03-29 16:34:28 +05:30
Siddhesh Poyarekar
0f6a8d4b0b Format e_log.c 2013-03-29 16:34:00 +05:30
Roland McGrath
288f7d79fe Use __ehdr_start, if available, as fallback for AT_PHDR. 2013-03-28 16:15:48 -07:00
Roland McGrath
dc0a026385 Make _dl_phdr pointer to const. 2013-03-28 15:39:32 -07:00
Roland McGrath
3d3436ae68 Consolidate declarations of _dl_phdr, _dl_phnum. 2013-03-28 15:33:57 -07:00
Roland McGrath
356b348023 Never call syslog in __libc_message. 2013-03-28 10:38:37 -07:00
Alan Modra
b0f1246ab4 PowerPC: .eh_frame info in crt1.o isn't useful and triggers gold bug 14675.
The .eh_frame info in crt1.o isn't useful and this patch prevents it from
being generated on PowerPC.  It triggers the following gold bug:

http://sourceware.org/bugzilla/show_bug.cgi?id=14675
2013-03-28 12:16:28 -05:00
Adhemerval Zanella
fbbe2b9a1f Fix e_logl (128ibm) spurious underflow 2013-03-28 09:52:48 -03:00
Siddhesh Poyarekar
1728ab378e Format and clean up s_atan2.c 2013-03-28 10:56:06 +05:30
Joseph Myers
3a7182a14b Fix casinh inaccuracy near i, imaginary part > 1 (bug 15307). 2013-03-27 14:38:44 +00:00
Siddhesh Poyarekar
5739f705ee Use integral constants
The compiler is smart enough to convert those into double for powerpc,
but if we put them as doubles, it adds overhead by performing those
operations in floating point mode.
2013-03-26 20:24:04 +05:30
Siddhesh Poyarekar
e375e83d17 Removed commented code 2013-03-26 20:14:18 +05:30
Siddhesh Poyarekar
6f2e90e78f Make mantissa type of mp_no configurable
The mantissa of mp_no is intended to take only integral values.  This
is a relatively good choice for powerpc due to its 4 fpus, but not for
other architectures, which suffer due to this choice.  This change
makes the default mantissa a long integer and allows powerpc to
override it.  Additionally, some operations have been optimized for
integer manipulation, resulting in a significant improvement in
performance.
2013-03-26 19:28:50 +05:30
Adhemerval Zanella
fce14d4e9c PowerPC: fix libm ABI issue for llroundl 2013-03-26 10:01:57 -03:00
David S. Miller
eb66fd21bf Update sparc ULPs.
* sysdeps/sparc/fpu/libm-test-ulps: Update.
2013-03-22 13:29:31 -07:00
Adhemerval Zanella
e42a38dd9d BZ#13889: expl (709.75) wrongly overflows for ldbl-128ibm
The patch increase the high value to check if expl overflows. Current
high mark value is not really correct, the algorithm accepts high values.
It also adds a correct wrapper function to check for overflow and underflow.
2013-03-22 12:39:10 -03:00
Dmitry V. Levin
2e0fb52187 BZ#11120: fix x86_64/strcmp.S NOT_IN_libc safeguards
Due to a typo repeated several times, this bug hasn't been fixed yet,
despite being marked as resolved in glibc 2.12.

* sysdeps/x86_64/strcmp.S: Replace all occurrences of NOT_IN_lib
with NOT_IN_libc.
2013-03-22 03:16:00 +00:00
Adhemerval Zanella
b5784d95bb PowerPC: fix sqrtl ABI issue
This patch fixes a sqrtl ABI issue when building for powerpc64.
2013-03-21 14:15:45 -03:00
Thomas Schwinge
5aa4a1a1fd On 32-bit x86, disable certain tests involving sNaN values.
Follow-up to commit 495ded2c8c.
2013-03-21 16:05:29 +01:00
Joseph Myers
98c48fe5cc Fix Bessel function spurious overflows for ldbl-128 / ldbl-128ibm (bug 15285). 2013-03-21 13:57:21 +00:00
Joseph Myers
0a1b2ae6f6 Fix casinh inaccuracy for argument with imaginary part 1 (bug 15287). 2013-03-21 10:27:10 +00:00
Siddhesh Poyarekar
b33d4ce4a2 Replace 8388608.0 with HALFRAD in mp code
Minor cleanup
2013-03-21 13:07:44 +05:30
Joseph Myers
bef0b50749 Move system-specific settings out of toplevel configure.in and config.make.in. 2013-03-20 22:37:06 +00:00
Roland McGrath
a600e5cef5 Consolidate Linux and POSIX libc_fatal code. 2013-03-19 17:07:15 -07:00
Andreas Schwab
446737706c s390x: Move rtld link to /lib 2013-03-19 12:08:35 +01:00
Ondrej Bilka
37bb363f03 Faster strlen on x64. 2013-03-18 07:39:12 +01:00
David S. Miller
cd18e90aa6 Update Sparc ULPs.
* sysdeps/sparc/fpu/libm-test-ulps: Update.
2013-03-17 08:38:10 -07:00
Joseph Myers
d2f9799e7c Fix y1l spurious overflows for ldbl-96 (bug 15283). 2013-03-16 17:51:48 +00:00
Joseph Myers
2a185d32e8 Fix spurious underflow exceptions for Bessel functions for ldbl-128 / ldbl-128ibm (bug 14155). 2013-03-16 17:50:28 +00:00
Roland McGrath
bc16e260d0 Move _dl_non_dynamic_init, _dl_aux_init declarations. 2013-03-15 14:32:04 -07:00
Thomas Schwinge
495ded2c8c Promote a math test for sNaN handling to the top-level. 2013-03-15 19:12:10 +01:00
Thomas Schwinge
777b0332c0 Use GCC's builtins for generating NaNs. 2013-03-15 19:10:20 +01:00
Thomas Schwinge
67e971f18f Better distinguish between NaN/qNaN/sNaN. 2013-03-15 19:06:02 +01:00
Siddhesh Poyarekar
1e3803454e Revert configurable mantissa patch
Reverts d22ca8cdfb

since it is severely broken on 32-bit.
2013-03-15 23:18:51 +05:30
Adhemerval Zanella
83a6b66ae9 Reverting wrong commit.
Restore sysdeps/gnu/configure wrongly modified on
ef26eece63.
2013-03-15 14:40:37 -03:00
Adhemerval Zanella
ef26eece63 PowerPC: gettimeofday optimization by using IFUNC 2013-03-15 10:58:56 -03:00
Siddhesh Poyarekar
d22ca8cdfb Make mantissa type configurable
This allows the default mantissa to be integral, with powerpc
overriding it to take advantage of its FPUs.
2013-03-15 10:44:03 +05:30
Joseph Myers
06d5adfbda Regenerate sysdeps/x86_64/preconfigure. 2013-03-15 01:18:32 +00:00
Joseph Myers
41c7328e85 Fix spurious underflow exceptions for Bessel functions for double (bug 14155). 2013-03-14 17:47:30 +00:00
Siddhesh Poyarekar
e25cfa6005 Fix formatting in last change 2013-03-14 08:18:48 +05:30
Petr Baudis
58a1335e76 Fix __times() handling of EFAULT when buf is NULL 2013-03-14 01:16:53 +01:00