Merge remote branch 'origin/master' into fedora/master

ChangeLog

@@ -1,3 +1,69 @@
+2010-04-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* string/test-strncmp.c (check_result): New function.
+	(do_one_test): Use it.
+	(check1): New function.
+	(test_main): Use it.
+	* sysdeps/i386/i686/multiarch/strcmp-sse4.S (crosspage): Properly
+	update source and destination.
+	* sysdeps/i386/i686/multiarch/strcmp-ssse3.S (gobble_ashr_12):
+	Properly check and update counter.
+
+2010-04-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* sysdeps/x86_64/elf/configure.in: Move AVX test to ....
+	* sysdeps/i386/configure.in: ...here.
+	* sysdeps/i386/i686/multiarch/Makefile (libm-sysdep_routines): Define.
+	(CFLAGS-s_fma-fma.c): Define.
+	(CFLAGS-s_fmaf-fma.c): Define.
+	* sysdeps/i386/i686/multiarch/Versions: New file.
+	* sysdeps/i386/i686/multiarch/s_fma-fma.c: New file.
+	* sysdeps/i386/i686/multiarch/s_fma.c: New file.
+	* sysdeps/i386/i686/multiarch/s_fmaf-fma.c: New file.
+	* sysdeps/i386/i686/multiarch/s_fmaf.c: New file.
+
+	* sysdeps/x86_64/multiarch/memcmp-sse4.S: Check
+	DATA_CACHE_SIZE_HALF instead of SHARED_CACHE_SIZE_HALF.
+
+2010-04-14  Andreas Schwab  <schwab@redhat.com>
+
+	* elf/dl-version.c (_dl_check_map_versions): Avoid index overflow
+	when dependencies are missing.
+
+2010-04-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* sysdeps/x86_64/multiarch/memcmp-sse4.S: Optimized for unaligned
+	data.
+
+2010-04-12  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
+	memcmp-sse4.
+	* sysdeps/x86_64/multiarch/memcmp-sse4.S: New file.
+	* sysdeps/x86_64/multiarch/memcmp.S: New file.
+	* sysdeps/x86_64/multiarch/rtld-memcmp.c: New file.
+
+2010-04-13  Ulrich Drepper  <drepper@redhat.com>
+
+	* sysdeps/x86_64/multiarch/init-arch.h: Pretty printing.
+	Add SSE 4.1 macros.
+
+2010-04-10  Matt Fleming  <matt@console-pimps.org>
+
+	* elf/elf.h: Add SH specific ELF header flags.
+
+2010-04-13  Andreas Schwab  <schwab@redhat.com>
+
+	* sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c: Fix setup of
+	overflow area.
+	* sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c: Likewise.
+
+2010-04-12  Andreas Schwab  <schwab@redhat.com>
+
+	* stdlib/tst-makecontext3.c (main): Initialize ucontext_t objects
+	only with getcontext.  Test for unimplemented makecontext by
+	checking errno.
+
 2010-04-09  Ulrich Drepper  <drepper@redhat.com>
 
 	* nscd/aicache.c (addhstaiX): Correct passing memory to address

elf/dl-version.c

@@ -322,10 +322,14 @@ _dl_check_map_versions (struct link_map *map, int verbose, int trace_mode)
 	      while (1)
 		{
 		  ElfW(Half) ndx = aux->vna_other & 0x7fff;
-		  map->l_versions[ndx].hash = aux->vna_hash;
-		  map->l_versions[ndx].hidden = aux->vna_other & 0x8000;
-		  map->l_versions[ndx].name = &strtab[aux->vna_name];
-		  map->l_versions[ndx].filename = &strtab[ent->vn_file];
+		  /* In trace mode, dependencies may be missing.  */
+		  if (__builtin_expect (ndx < map->l_nversions, 1))
+		    {
+		      map->l_versions[ndx].hash = aux->vna_hash;
+		      map->l_versions[ndx].hidden = aux->vna_other & 0x8000;
+		      map->l_versions[ndx].name = &strtab[aux->vna_name];
+		      map->l_versions[ndx].filename = &strtab[ent->vn_file];
+		    }
 
 		  if (aux->vna_next == 0)
 		    /* No more symbols.  */

elf/elf.h

@@ -2477,6 +2477,30 @@ typedef Elf32_Addr Elf32_Conflict;
 
 /* SH specific declarations */
 
+/* Processor specific flags for the ELF header e_flags field.  */
+#define EF_SH_MACH_MASK		0x1f
+#define EF_SH_UNKNOWN		0x0
+#define EF_SH1			0x1
+#define EF_SH2			0x2
+#define EF_SH3			0x3
+#define EF_SH_DSP		0x4
+#define EF_SH3_DSP		0x5
+#define EF_SH4AL_DSP		0x6
+#define EF_SH3E			0x8
+#define EF_SH4			0x9
+#define EF_SH2E			0xb
+#define EF_SH4A			0xc
+#define EF_SH2A			0xd
+#define EF_SH4_NOFPU		0x10
+#define EF_SH4A_NOFPU		0x11
+#define EF_SH4_NOMMU_NOFPU	0x12
+#define EF_SH2A_NOFPU		0x13
+#define EF_SH3_NOMMU		0x14
+#define EF_SH2A_SH4_NOFPU	0x15
+#define EF_SH2A_SH3_NOFPU	0x16
+#define EF_SH2A_SH4		0x17
+#define EF_SH2A_SH3E		0x18
+
 /* SH relocs.  */
 #define	R_SH_NONE		0
 #define	R_SH_DIR32		1

stdlib/tst-makecontext3.c

@@ -136,38 +136,42 @@ main (void)
       exit (1);
     }
 
-  ctx[1] = ctx[0];
+  if (getcontext (&ctx[1]) != 0)
+    {
+      printf ("%s: getcontext: %m\n", __FUNCTION__);
+      exit (1);
+    }
+
   ctx[1].uc_stack.ss_sp = st1;
   ctx[1].uc_stack.ss_size = sizeof st1;
   ctx[1].uc_link = &ctx[0];
-  {
-    ucontext_t tempctx = ctx[1];
-    makecontext (&ctx[1], (void (*) (void)) f1, 33,
-		 0x00000001 << flag, 0x00000004 << flag,
-		 0x00000012 << flag, 0x00000048 << flag,
-		 0x00000123 << flag, 0x0000048d << flag,
-		 0x00001234 << flag, 0x000048d1 << flag,
-		 0x00012345 << flag, 0x00048d15 << flag,
-		 0x00123456 << flag, 0x0048d159 << flag,
-		 0x01234567 << flag, 0x048d159e << flag,
-		 0x12345678 << flag, 0x48d159e2 << flag,
-		 0x23456789 << flag, 0x8d159e26 << flag,
-		 0x3456789a << flag, 0xd159e26a << flag,
-		 0x456789ab << flag, 0x159e26af << flag,
-		 0x56789abc << flag, 0x59e26af3 << flag,
-		 0x6789abcd << flag, 0x9e26af37 << flag,
-		 0x789abcde << flag, 0xe26af37b << flag,
-		 0x89abcdef << flag, 0x26af37bc << flag,
-		 0x9abcdef0 << flag, 0x6af37bc3 << flag,
-		 0xabcdef0f << flag);
-
-    /* Without this check, a stub makecontext can make us spin forever.  */
-    if (memcmp (&tempctx, &ctx[1], sizeof ctx[1]) == 0)
-      {
-	puts ("makecontext was a no-op, presuming not implemented");
-	return 0;
-      }
-  }
+  errno = 0;
+  makecontext (&ctx[1], (void (*) (void)) f1, 33,
+	       0x00000001 << flag, 0x00000004 << flag,
+	       0x00000012 << flag, 0x00000048 << flag,
+	       0x00000123 << flag, 0x0000048d << flag,
+	       0x00001234 << flag, 0x000048d1 << flag,
+	       0x00012345 << flag, 0x00048d15 << flag,
+	       0x00123456 << flag, 0x0048d159 << flag,
+	       0x01234567 << flag, 0x048d159e << flag,
+	       0x12345678 << flag, 0x48d159e2 << flag,
+	       0x23456789 << flag, 0x8d159e26 << flag,
+	       0x3456789a << flag, 0xd159e26a << flag,
+	       0x456789ab << flag, 0x159e26af << flag,
+	       0x56789abc << flag, 0x59e26af3 << flag,
+	       0x6789abcd << flag, 0x9e26af37 << flag,
+	       0x789abcde << flag, 0xe26af37b << flag,
+	       0x89abcdef << flag, 0x26af37bc << flag,
+	       0x9abcdef0 << flag, 0x6af37bc3 << flag,
+	       0xabcdef0f << flag);
+
+  /* Without this check, a stub makecontext can make us spin forever.  */
+  if (errno == ENOSYS)
+    {
+      puts ("makecontext not implemented");
+      back_in_main = 1;
+      return 0;
+    }
 
   /* Play some tricks with this context.  */
   if (++global == 1)

string/test-strncmp.c

@@ -1,5 +1,5 @@
 /* Test and measure strncmp functions.
-   Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2003, 2010 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Jakub Jelinek <jakub@redhat.com>, 1999.
 
@@ -51,8 +51,8 @@ stupid_strncmp (const char *s1, const char *s2, size_t n)
   return ret;
 }
 
-static void
-do_one_test (impl_t *impl, const char *s1, const char *s2, size_t n,
+static int
+check_result (impl_t *impl, const char *s1, const char *s2, size_t n,
 	     int exp_result)
 {
   int result = CALL (impl, s1, s2, n);
@@ -63,9 +63,19 @@ do_one_test (impl_t *impl, const char *s1, const char *s2, size_t n,
       error (0, 0, "Wrong result in function %s %d %d", impl->name,
 	     result, exp_result);
       ret = 1;
-      return;
+      return -1;
     }
 
+  return 0;
+}
+
+static void
+do_one_test (impl_t *impl, const char *s1, const char *s2, size_t n,
+	     int exp_result)
+{
+  if (check_result (impl, s1, s2, n, exp_result) < 0)
+    return;
+
   if (HP_TIMING_AVAIL)
     {
       hp_timing_t start __attribute ((unused));
@@ -283,13 +293,34 @@ do_random_tests (void)
     }
 }
 
+static void
+check1 (void)
+{
+  char *s1 = (char *)(buf1 + 0xb2c);
+  char *s2 = (char *)(buf1 + 0xfd8);
+  size_t i;
+  int exp_result;
+
+  strcpy(s1, "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrs");
+  strcpy(s2, "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkLMNOPQRSTUV");
+
+  for (i = 0; i < 80; i++)
+    {
+      exp_result = simple_strncmp (s1, s2, i);
+      FOR_EACH_IMPL (impl, 0)
+	 check_result (impl, s1, s2, i, exp_result);
+    }
+}
+
 int
 test_main (void)
 {
   size_t i;
 
   test_init ();
 
+  check1 ();
+
   printf ("%23s", "");
   FOR_EACH_IMPL (impl, 0)
     printf ("\t%s", impl->name);

sysdeps/i386/configure

@@ -656,3 +656,28 @@ fi
 fi
 { $as_echo "$as_me:$LINENO: result: $libc_cv_as_i686" >&5
 $as_echo "$libc_cv_as_i686" >&6; }
+
+{ $as_echo "$as_me:$LINENO: checking for AVX support" >&5
+$as_echo_n "checking for AVX support... " >&6; }
+if test "${libc_cv_cc_avx+set}" = set; then
+  $as_echo_n "(cached) " >&6
+else
+  if { ac_try='${CC-cc} -mavx -xc /dev/null -S -o /dev/null'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  libc_cv_cc_avx=yes
+else
+  libc_cv_cc_avx=no
+fi
+fi
+{ $as_echo "$as_me:$LINENO: result: $libc_cv_cc_avx" >&5
+$as_echo "$libc_cv_cc_avx" >&6; }
+if test $libc_cv_cc_avx = yes; then
+  cat >>confdefs.h <<\_ACEOF
+#define HAVE_AVX_SUPPORT 1
+_ACEOF
+
+fi

sysdeps/i386/configure.in

@@ -55,3 +55,14 @@ if AC_TRY_COMMAND([${CC-cc} -Wa,-mtune=i686 -xc /dev/null -S -o /dev/null]); the
 else
   libc_cv_as_i686=no
 fi])
+
+dnl Check if -mavx works.
+AC_CACHE_CHECK(for AVX support, libc_cv_cc_avx, [dnl
+if AC_TRY_COMMAND([${CC-cc} -mavx -xc /dev/null -S -o /dev/null]); then
+  libc_cv_cc_avx=yes
+else
+  libc_cv_cc_avx=no
+fi])
+if test $libc_cv_cc_avx = yes; then
+  AC_DEFINE(HAVE_AVX_SUPPORT)
+fi

sysdeps/i386/i686/multiarch/Makefile

@@ -19,3 +19,9 @@ CFLAGS-strstr.c += -msse4
 CFLAGS-strcasestr.c += -msse4
 endif
 endif
+
+ifeq (mathyes,$(subdir)$(config-cflags-avx))
+libm-sysdep_routines += s_fma-fma s_fmaf-fma
+CFLAGS-s_fma-fma.c += -mavx -mfpmath=sse
+CFLAGS-s_fmaf-fma.c += -mavx -mfpmath=sse
+endif

sysdeps/i386/i686/multiarch/Versions

@@ -0,0 +1,5 @@
+libc {
+  GLIBC_PRIVATE {
+    __get_cpu_features;
+  }
+}

sysdeps/i386/i686/multiarch/s_fma-fma.c

@@ -0,0 +1,30 @@
+/* FMA version of fma.
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Intel Corporation.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA. */
+
+#include <config.h>
+
+#ifdef HAVE_AVX_SUPPORT
+double
+__fma_fma (double x, double y, double z)
+{
+  asm ("vfmadd213sd %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z));
+  return x;
+}
+#endif

sysdeps/i386/i686/multiarch/s_fma.c

@@ -0,0 +1,36 @@
+/* Multiple versions of fma.
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Intel Corporation.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA. */
+
+#include <config.h>
+
+#ifdef HAVE_AVX_SUPPORT
+#include <math.h>
+#include <init-arch.h>
+
+extern double __fma_ia32 (double x, double y, double z) attribute_hidden;
+extern double __fma_fma (double x, double y, double z) attribute_hidden;
+
+libm_ifunc (__fma, HAS_FMA ? __fma_fma : __fma_ia32);
+weak_alias (__fma, fma)
+
+# define __fma __fma_ia32
+#endif
+
+#include <math/s_fma.c>