Commit Graph

8232 Commits

Author SHA1 Message Date
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