Update.

2004-05-25  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/fpu/Makefile: Make ld.so a dependency of libm.so.
	* sysdeps/powerpc/fpu/bits/mathinline.h [__LIBC_INERNAL_MATH_INLINES]
	(__ieee754_sqrt): Define as __MATH_INLINE using fsqrt instruction.
	(__ieee754_sqrtf): Define as __MATH_INLINE using fsqrts instruction.
	* sysdeps/powerpc/fpu/e_sqrt.c (__slow_ieee754_sqrt): Moved
	implementation from w_sqrt.c.
	* sysdeps/powerpc/fpu/e_sqrtf.c (__slow_ieee754_sqrtf): Moved
	implementation from w_sqrtf.c.
	* sysdeps/powerpc/fpu/w_sqrt.c (__sqrt): Wrapper implementation
	using inline __ieee754_sqrt().
	* sysdeps/powerpc/fpu/w_sqrtf.c (__sqrtf): Wrapper implementation
	using inline __ieee754_sqrtf().
	* sysdeps/powerpc/powerpc32/sysdep.h [__ASSEMBLER__]: Include
	<sysdeps/powerpc/sysdep.h> independent of __ASSEMBLER__.
	* sysdeps/powerpc/sysdep.h [__ASSEMBLER__] (PPC_FEATURE_*): Define
	PPC_FEATURE_*  independent of __ASSEMBLER__.

2004-05-25  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/pthread/aio_notify.c: Use <> instead of "" for aio_misc.h
	include.
	(aio_start_notify_thread): Define if not defined.
	(notify_func_wrapper): Use it.
	* sysdeps/pthread/aio_misc.c: Use <> instead of "" for aio_misc.h
	include.
	(aio_create_helper_thread): Define if not defined.
	(__aio_create_helper_thread): New function.
	(__aio_enqueue_request): Use aio_create_helper_thread.

	* nis/ypclnt.c (ypall_data, ypall_foreach): Remove.
	(struct ypresp_all_data): New type.
	(__xdr_ypresp_all): Change second argument to
	struct ypresp_all_data *.  Replace ypall_foreach and
	ypall_data with objp->foreach and objp->data.
	(yp_all): Remove status variable, add data.  Replace
	all uses of status with data.status.  Initialize data.foreach
	and data.data instead of ypall_foreach and ypall_data.

2004-05-24  Jakub Jelinek  <jakub@redhat.com>

	* elf/dl-lookup.c (add_dependency): Set DF_1_NODELETE bit
	in l_flags_1, not in l_flags.

10 files changed, 499 insertions, 257 deletions

diff --git a/sysdeps/powerpc/fpu/Makefile b/sysdeps/powerpc/fpu/Makefile
index bf2ed92e7b..d0fe4a8ba1 100644
--- a/sysdeps/powerpc/fpu/Makefile
+++ b/sysdeps/powerpc/fpu/Makefile
@@ -1,3 +1,6 @@
 ifeq ($(subdir),math)
 libm-support += fenv_const fe_nomask t_sqrt
+
+# libm needs ld.so to access dl_hwcap
+$(objpfx)libm.so: $(elfobjdir)/ld.so
 endif
diff --git a/sysdeps/powerpc/fpu/bits/mathinline.h b/sysdeps/powerpc/fpu/bits/mathinline.h
index e692df9b1a..d9206d4fac 100644
--- a/sysdeps/powerpc/fpu/bits/mathinline.h
+++ b/sysdeps/powerpc/fpu/bits/mathinline.h
@@ -121,4 +121,56 @@ fdimf (float __x, float __y) __THROW
 
 #endif /* __USE_ISOC99 */
 #endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
+
+/* This code is used internally in the GNU libc.  */
+#  ifdef __LIBC_INTERNAL_MATH_INLINES
+
+#include <sysdep.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
+
+extern double __slow_ieee754_sqrt (double);
+__MATH_INLINE double
+__ieee754_sqrt (double __x)
+{
+  double __z;
+  
+  /* If the CPU is 64-bit we can use the optional FP instructions we.  */
+  if ((GLRO(dl_hwcap) & PPC_FEATURE_64) != 0)
+  {
+    /* Volatile is required to prevent the compiler from moving the 
+       fsqrt instruction above the branch.  */
+     __asm __volatile (
+	"	fsqrt	%0,%1\n"
+		: "=f" (__z)
+		: "f" (__x));
+  }
+  else
+     __z = __slow_ieee754_sqrt(__x);
+     
+  return __z;
+}
+
+extern float __slow_ieee754_sqrtf (float);
+__MATH_INLINE float
+__ieee754_sqrtf (float __x)
+{
+  float __z;
+  
+  /* If the CPU is 64-bit we can use the optional FP instructions we.  */
+  if ((GLRO(dl_hwcap) & PPC_FEATURE_64) != 0)
+  {
+    /* Volatile is required to prevent the compiler from moving the 
+       fsqrts instruction above the branch.  */
+     __asm __volatile (
+	"	fsqrts	%0,%1\n"
+		: "=f" (__z)
+		: "f" (__x));
+  }
+  else
+     __z = __slow_ieee754_sqrtf(__x);
+     
+  return __z;
+}
+#  endif /* __LIBC_INTERNAL_MATH_INLINES */
 #endif /* __GNUC__ && !_SOFT_FLOAT */
diff --git a/sysdeps/powerpc/fpu/e_sqrt.c b/sysdeps/powerpc/fpu/e_sqrt.c
index 9416ea60c8..eb9984d0a1 100644
--- a/sysdeps/powerpc/fpu/e_sqrt.c
+++ b/sysdeps/powerpc/fpu/e_sqrt.c
@@ -1 +1,185 @@
-/* __ieee754_sqrt is in w_sqrt.c  */
+/* Double-precision floating point square root.
+   Copyright (C) 1997, 2002, 2003, 2004 Free Software Foundation, Inc.
+   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 <math.h>
+#include <math_private.h>
+#include <fenv_libc.h>
+#include <inttypes.h>
+
+#include <sysdep.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
+
+static const double almost_half = 0.5000000000000001;	/* 0.5 + 2^-53 */
+static const ieee_float_shape_type a_nan = {.word = 0x7fc00000 };
+static const ieee_float_shape_type a_inf = {.word = 0x7f800000 };
+static const float two108 = 3.245185536584267269e+32;
+static const float twom54 = 5.551115123125782702e-17;
+extern const float __t_sqrt[1024];
+
+/* The method is based on a description in
+   Computation of elementary functions on the IBM RISC System/6000 processor,
+   P. W. Markstein, IBM J. Res. Develop, 34(1) 1990.
+   Basically, it consists of two interleaved Newton-Rhapson approximations,
+   one to find the actual square root, and one to find its reciprocal
+   without the expense of a division operation.   The tricky bit here
+   is the use of the POWER/PowerPC multiply-add operation to get the
+   required accuracy with high speed.
+
+   The argument reduction works by a combination of table lookup to
+   obtain the initial guesses, and some careful modification of the
+   generated guesses (which mostly runs on the integer unit, while the
+   Newton-Rhapson is running on the FPU).  */
+
+#ifdef __STDC__
+double
+__slow_ieee754_sqrt (double x)
+#else
+double
+__slow_ieee754_sqrt (x)
+     double x;
+#endif
+{
+  const float inf = a_inf.value;
+
+  if (x > 0)
+    {
+      /* schedule the EXTRACT_WORDS to get separation between the store
+         and the load.  */
+      ieee_double_shape_type ew_u;
+      ieee_double_shape_type iw_u;
+      ew_u.value = (x);
+      if (x != inf)
+	{
+	  /* Variables named starting with 's' exist in the
+	     argument-reduced space, so that 2 > sx >= 0.5,
+	     1.41... > sg >= 0.70.., 0.70.. >= sy > 0.35... .
+	     Variables named ending with 'i' are integer versions of
+	     floating-point values.  */
+	  double sx;	/* The value of which we're trying to find the
+			   square root.  */
+	  double sg, g;	/* Guess of the square root of x.  */
+	  double sd, d;	/* Difference between the square of the guess and x.  */
+	  double sy;	/* Estimate of 1/2g (overestimated by 1ulp).  */
+	  double sy2;	/* 2*sy */
+	  double e;	/* Difference between y*g and 1/2 (se = e * fsy).  */
+	  double shx;	/* == sx * fsg */
+	  double fsg;	/* sg*fsg == g.  */
+	  fenv_t fe;	/* Saved floating-point environment (stores rounding
+			   mode and whether the inexact exception is
+			   enabled).  */
+	  uint32_t xi0, xi1, sxi, fsgi;
+	  const float *t_sqrt;
+
+	  fe = fegetenv_register ();
+	  /* complete the EXTRACT_WORDS (xi0,xi1,x) operation.  */
+	  xi0 = ew_u.parts.msw;
+	  xi1 = ew_u.parts.lsw;
+	  relax_fenv_state ();
+	  sxi = (xi0 & 0x3fffffff) | 0x3fe00000;
+	  /* schedule the INSERT_WORDS (sx, sxi, xi1) to get separation
+	     between the store and the load.  */
+	  iw_u.parts.msw = sxi;
+	  iw_u.parts.lsw = xi1;
+	  t_sqrt = __t_sqrt + (xi0 >> (52 - 32 - 8 - 1) & 0x3fe);
+	  sg = t_sqrt[0];
+	  sy = t_sqrt[1];
+	  /* complete the INSERT_WORDS (sx, sxi, xi1) operation.  */
+	  sx = iw_u.value;
+
+	  /* Here we have three Newton-Rhapson iterations each of a
+	     division and a square root and the remainder of the
+	     argument reduction, all interleaved.   */
+	  sd = -(sg * sg - sx);
+	  fsgi = (xi0 + 0x40000000) >> 1 & 0x7ff00000;
+	  sy2 = sy + sy;
+	  sg = sy * sd + sg;	/* 16-bit approximation to sqrt(sx). */
+
+	  /* schedule the INSERT_WORDS (fsg, fsgi, 0) to get separation
+	     between the store and the load.  */
+	  INSERT_WORDS (fsg, fsgi, 0);
+	  iw_u.parts.msw = fsgi;
+	  iw_u.parts.lsw = (0);
+	  e = -(sy * sg - almost_half);
+	  sd = -(sg * sg - sx);
+	  if ((xi0 & 0x7ff00000) == 0)
+	    goto denorm;
+	  sy = sy + e * sy2;
+	  sg = sg + sy * sd;	/* 32-bit approximation to sqrt(sx).  */
+	  sy2 = sy + sy;
+	  /* complete the INSERT_WORDS (fsg, fsgi, 0) operation.  */
+	  fsg = iw_u.value;
+	  e = -(sy * sg - almost_half);
+	  sd = -(sg * sg - sx);
+	  sy = sy + e * sy2;
+	  shx = sx * fsg;
+	  sg = sg + sy * sd;	/* 64-bit approximation to sqrt(sx),
+				   but perhaps rounded incorrectly.  */
+	  sy2 = sy + sy;
+	  g = sg * fsg;
+	  e = -(sy * sg - almost_half);
+	  d = -(g * sg - shx);
+	  sy = sy + e * sy2;
+	  fesetenv_register (fe);
+	  return g + sy * d;
+	denorm:
+	  /* For denormalised numbers, we normalise, calculate the
+	     square root, and return an adjusted result.  */
+	  fesetenv_register (fe);
+	  return __slow_ieee754_sqrt (x * two108) * twom54;
+	}
+    }
+  else if (x < 0)
+    {
+      /* For some reason, some PowerPC32 processors don't implement
+         FE_INVALID_SQRT.  */
+#ifdef FE_INVALID_SQRT
+      feraiseexcept (FE_INVALID_SQRT);
+      if (!fetestexcept (FE_INVALID))
+#endif
+	feraiseexcept (FE_INVALID);
+      x = a_nan.value;
+    }
+  return f_wash (x);
+}
+
+#ifdef __STDC__
+double
+__ieee754_sqrt (double x)
+#else
+double
+__ieee754_sqrt (x)
+     double x;
+#endif
+{
+  double z;
+
+  /* If the CPU is 64-bit we can use the optional FP instructions we.  */
+  if ((GLRO (dl_hwcap) & PPC_FEATURE_64) != 0)
+    {
+      /* Volatile is required to prevent the compiler from moving the 
+         fsqrt instruction above the branch.  */
+      __asm __volatile ("	fsqrt	%0,%1\n"
+				:"=f" (z):"f" (x));
+    }
+  else
+    z = __slow_ieee754_sqrt (x);
+
+  return z;
+}
diff --git a/sysdeps/powerpc/fpu/e_sqrtf.c b/sysdeps/powerpc/fpu/e_sqrtf.c
index 01c76d6757..9b701012af 100644
--- a/sysdeps/powerpc/fpu/e_sqrtf.c
+++ b/sysdeps/powerpc/fpu/e_sqrtf.c
@@ -1 +1,162 @@
-/* __ieee754_sqrtf is in w_sqrtf.c  */
+/* Single-precision floating point square root.
+   Copyright (C) 1997, 2003, 2004 Free Software Foundation, Inc.
+   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 <math.h>
+#include <math_private.h>
+#include <fenv_libc.h>
+#include <inttypes.h>
+
+#include <sysdep.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
+
+static const float almost_half = 0.50000006;	/* 0.5 + 2^-24 */
+static const ieee_float_shape_type a_nan = {.word = 0x7fc00000 };
+static const ieee_float_shape_type a_inf = {.word = 0x7f800000 };
+static const float two48 = 281474976710656.0;
+static const float twom24 = 5.9604644775390625e-8;
+extern const float __t_sqrt[1024];
+
+/* The method is based on a description in
+   Computation of elementary functions on the IBM RISC System/6000 processor,
+   P. W. Markstein, IBM J. Res. Develop, 34(1) 1990.
+   Basically, it consists of two interleaved Newton-Rhapson approximations,
+   one to find the actual square root, and one to find its reciprocal
+   without the expense of a division operation.   The tricky bit here
+   is the use of the POWER/PowerPC multiply-add operation to get the
+   required accuracy with high speed.
+
+   The argument reduction works by a combination of table lookup to
+   obtain the initial guesses, and some careful modification of the
+   generated guesses (which mostly runs on the integer unit, while the
+   Newton-Rhapson is running on the FPU).  */
+
+#ifdef __STDC__
+float
+__slow_ieee754_sqrtf (float x)
+#else
+float
+__slow_ieee754_sqrtf (x)
+     float x;
+#endif
+{
+  const float inf = a_inf.value;
+
+  if (x > 0)
+    {
+      if (x != inf)
+	{
+	  /* Variables named starting with 's' exist in the
+	     argument-reduced space, so that 2 > sx >= 0.5,
+	     1.41... > sg >= 0.70.., 0.70.. >= sy > 0.35... .
+	     Variables named ending with 'i' are integer versions of
+	     floating-point values.  */
+	  float sx;		/* The value of which we're trying to find the square
+				   root.  */
+	  float sg, g;		/* Guess of the square root of x.  */
+	  float sd, d;		/* Difference between the square of the guess and x.  */
+	  float sy;		/* Estimate of 1/2g (overestimated by 1ulp).  */
+	  float sy2;		/* 2*sy */
+	  float e;		/* Difference between y*g and 1/2 (note that e==se).  */
+	  float shx;		/* == sx * fsg */
+	  float fsg;		/* sg*fsg == g.  */
+	  fenv_t fe;		/* Saved floating-point environment (stores rounding
+				   mode and whether the inexact exception is
+				   enabled).  */
+	  uint32_t xi, sxi, fsgi;
+	  const float *t_sqrt;
+
+	  GET_FLOAT_WORD (xi, x);
+	  fe = fegetenv_register ();
+	  relax_fenv_state ();
+	  sxi = (xi & 0x3fffffff) | 0x3f000000;
+	  SET_FLOAT_WORD (sx, sxi);
+	  t_sqrt = __t_sqrt + (xi >> (23 - 8 - 1) & 0x3fe);
+	  sg = t_sqrt[0];
+	  sy = t_sqrt[1];
+
+	  /* Here we have three Newton-Rhapson iterations each of a
+	     division and a square root and the remainder of the
+	     argument reduction, all interleaved.   */
+	  sd = -(sg * sg - sx);
+	  fsgi = (xi + 0x40000000) >> 1 & 0x7f800000;
+	  sy2 = sy + sy;
+	  sg = sy * sd + sg;	/* 16-bit approximation to sqrt(sx). */
+	  e = -(sy * sg - almost_half);
+	  SET_FLOAT_WORD (fsg, fsgi);
+	  sd = -(sg * sg - sx);
+	  sy = sy + e * sy2;
+	  if ((xi & 0x7f800000) == 0)
+	    goto denorm;
+	  shx = sx * fsg;
+	  sg = sg + sy * sd;	/* 32-bit approximation to sqrt(sx),
+				   but perhaps rounded incorrectly.  */
+	  sy2 = sy + sy;
+	  g = sg * fsg;
+	  e = -(sy * sg - almost_half);
+	  d = -(g * sg - shx);
+	  sy = sy + e * sy2;
+	  fesetenv_register (fe);
+	  return g + sy * d;
+	denorm:
+	  /* For denormalised numbers, we normalise, calculate the
+	     square root, and return an adjusted result.  */
+	  fesetenv_register (fe);
+	  return __slow_ieee754_sqrtf (x * two48) * twom24;
+	}
+    }
+  else if (x < 0)
+    {
+      /* For some reason, some PowerPC32 processors don't implement
+         FE_INVALID_SQRT.  */
+#ifdef FE_INVALID_SQRT
+      feraiseexcept (FE_INVALID_SQRT);
+      if (!fetestexcept (FE_INVALID))
+#endif
+	feraiseexcept (FE_INVALID);
+      x = a_nan.value;
+    }
+  return f_washf (x);
+}
+
+
+#ifdef __STDC__
+float
+__ieee754_sqrtf (float x)
+#else
+float
+__ieee754_sqrtf (x)
+     float x;
+#endif
+{
+  double z;
+
+  /* If the CPU is 64-bit we can use the optional FP instructions we.  */
+  if ((GLRO (dl_hwcap) & PPC_FEATURE_64) != 0)
+    {
+      /* Volatile is required to prevent the compiler from moving the 
+         fsqrt instruction above the branch.  */
+      __asm __volatile ("	fsqrts	%0,%1\n"
+				:"=f" (z):"f" (x));
+    }
+  else
+    z = __slow_ieee754_sqrtf (x);
+
+  return z;
+}
diff --git a/sysdeps/powerpc/fpu/w_sqrt.c b/sysdeps/powerpc/fpu/w_sqrt.c
index ff0331725c..806d8e4907 100644
--- a/sysdeps/powerpc/fpu/w_sqrt.c
+++ b/sysdeps/powerpc/fpu/w_sqrt.c
@@ -1,5 +1,5 @@
-/* Double-precision floating point square root.
-   Copyright (C) 1997, 2002, 2003 Free Software Foundation, Inc.
+/* Double-precision floating point square root wrapper.
+   Copyright (C) 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -17,130 +17,35 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#include <math.h>
-#include <math_private.h>
+#include "math.h"
+#include "math_private.h"
 #include <fenv_libc.h>
-#include <inttypes.h>
 
-static const double almost_half = 0.5000000000000001;  /* 0.5 + 2^-53 */
-static const ieee_float_shape_type a_nan = { .word = 0x7fc00000 };
-static const ieee_float_shape_type a_inf = { .word = 0x7f800000 };
-static const float two108 = 3.245185536584267269e+32;
-static const float twom54 = 5.551115123125782702e-17;
-extern const float __t_sqrt[1024];
-
-/* The method is based on a description in
-   Computation of elementary functions on the IBM RISC System/6000 processor,
-   P. W. Markstein, IBM J. Res. Develop, 34(1) 1990.
-   Basically, it consists of two interleaved Newton-Rhapson approximations,
-   one to find the actual square root, and one to find its reciprocal
-   without the expense of a division operation.   The tricky bit here
-   is the use of the POWER/PowerPC multiply-add operation to get the
-   required accuracy with high speed.
-
-   The argument reduction works by a combination of table lookup to
-   obtain the initial guesses, and some careful modification of the
-   generated guesses (which mostly runs on the integer unit, while the
-   Newton-Rhapson is running on the FPU).  */
+#ifdef __STDC__
 double
-__sqrt(double x)
-{
-  const float inf = a_inf.value;
-  /* x = f_wash(x); *//* This ensures only one exception for SNaN. */
-  if (x > 0)
-    {
-      if (x != inf)
-	{
-	  /* Variables named starting with 's' exist in the
-	     argument-reduced space, so that 2 > sx >= 0.5,
-	     1.41... > sg >= 0.70.., 0.70.. >= sy > 0.35... .
-	     Variables named ending with 'i' are integer versions of
-	     floating-point values.  */
-	  double sx;   /* The value of which we're trying to find the
-			  square root.  */
-	  double sg,g; /* Guess of the square root of x.  */
-	  double sd,d; /* Difference between the square of the guess and x.  */
-	  double sy;   /* Estimate of 1/2g (overestimated by 1ulp).  */
-	  double sy2;  /* 2*sy */
-	  double e;    /* Difference between y*g and 1/2 (se = e * fsy).  */
-	  double shx;  /* == sx * fsg */
-	  double fsg;  /* sg*fsg == g.  */
-	  fenv_t fe;  /* Saved floating-point environment (stores rounding
-			 mode and whether the inexact exception is
-			 enabled).  */
-	  uint32_t xi0, xi1, sxi, fsgi;
-	  const float *t_sqrt;
-
-	  fe = fegetenv_register();
-	  EXTRACT_WORDS (xi0,xi1,x);
-	  relax_fenv_state();
-	  sxi = (xi0 & 0x3fffffff) | 0x3fe00000;
-	  INSERT_WORDS (sx, sxi, xi1);
-	  t_sqrt = __t_sqrt + (xi0 >> (52-32-8-1)  & 0x3fe);
-	  sg = t_sqrt[0];
-	  sy = t_sqrt[1];
-
-	  /* Here we have three Newton-Rhapson iterations each of a
-	     division and a square root and the remainder of the
-	     argument reduction, all interleaved.   */
-	  sd  = -(sg*sg - sx);
-	  fsgi = (xi0 + 0x40000000) >> 1 & 0x7ff00000;
-	  sy2 = sy + sy;
-	  sg  = sy*sd + sg;  /* 16-bit approximation to sqrt(sx). */
-	  INSERT_WORDS (fsg, fsgi, 0);
-	  e   = -(sy*sg - almost_half);
-	  sd  = -(sg*sg - sx);
-	  if ((xi0 & 0x7ff00000) == 0)
-	    goto denorm;
-	  sy  = sy + e*sy2;
-	  sg  = sg + sy*sd;  /* 32-bit approximation to sqrt(sx).  */
-	  sy2 = sy + sy;
-	  e   = -(sy*sg - almost_half);
-	  sd  = -(sg*sg - sx);
-	  sy  = sy + e*sy2;
-	  shx = sx * fsg;
-	  sg  = sg + sy*sd;  /* 64-bit approximation to sqrt(sx),
-				but perhaps rounded incorrectly.  */
-	  sy2 = sy + sy;
-	  g   = sg * fsg;
-	  e   = -(sy*sg - almost_half);
-	  d   = -(g*sg - shx);
-	  sy  = sy + e*sy2;
-	  fesetenv_register (fe);
-	  return g + sy*d;
-	denorm:
-	  /* For denormalised numbers, we normalise, calculate the
-	     square root, and return an adjusted result.  */
-	  fesetenv_register (fe);
-	  return __sqrt(x * two108) * twom54;
-	}
-    }
-  else if (x < 0)
-    {
-#ifdef FE_INVALID_SQRT
-      feraiseexcept (FE_INVALID_SQRT);
-      /* For some reason, some PowerPC processors don't implement
-	 FE_INVALID_SQRT.  I guess no-one ever thought they'd be
-	 used for square roots... :-) */
-      if (!fetestexcept (FE_INVALID))
+__sqrt (double x)		/* wrapper sqrt */
+#else
+double
+__sqrt (x)			/* wrapper sqrt */
+     double x;
 #endif
-	feraiseexcept (FE_INVALID);
-#ifndef _IEEE_LIBM
-      if (_LIB_VERSION != _IEEE_)
-	x = __kernel_standard(x,x,26);
-      else
+{
+#ifdef _IEEE_LIBM
+  return __ieee754_sqrt (x);
+#else
+  double z;
+  z = __ieee754_sqrt (x);
+  if (_LIB_VERSION == _IEEE_ || (x != x))
+    return z;
+
+  if (x < 0.0)
+    return __kernel_standard (x, x, 26);	/* sqrt(negative) */
+  else
+    return z;
 #endif
-      x = a_nan.value;
-    }
-  return f_wash(x);
 }
 
 weak_alias (__sqrt, sqrt)
-/* Strictly, this is wrong, but the only places where _ieee754_sqrt is
-   used will not pass in a negative result.  */
-strong_alias(__sqrt,__ieee754_sqrt)
-
 #ifdef NO_LONG_DOUBLE
-weak_alias (__sqrt, __sqrtl)
-weak_alias (__sqrt, sqrtl)
+  strong_alias (__sqrt, __sqrtl) weak_alias (__sqrt, sqrtl)
 #endif
diff --git a/sysdeps/powerpc/fpu/w_sqrtf.c b/sysdeps/powerpc/fpu/w_sqrtf.c
index 8eb94d8e3b..e3f3c995e8 100644
--- a/sysdeps/powerpc/fpu/w_sqrtf.c
+++ b/sysdeps/powerpc/fpu/w_sqrtf.c
@@ -1,5 +1,5 @@
-/* Single-precision floating point square root.
-   Copyright (C) 1997, 2003 Free Software Foundation, Inc.
+/* Single-precision floating point square root wrapper.
+   Copyright (C) 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -17,120 +17,38 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#include <math.h>
-#include <math_private.h>
+#include "math.h"
+#include "math_private.h"
 #include <fenv_libc.h>
-#include <inttypes.h>
 
-static const float almost_half = 0.50000006;  /* 0.5 + 2^-24 */
-static const ieee_float_shape_type a_nan = { .word = 0x7fc00000 };
-static const ieee_float_shape_type a_inf = { .word = 0x7f800000 };
-static const float two48 = 281474976710656.0;
-static const float twom24 = 5.9604644775390625e-8;
-extern const float __t_sqrt[1024];
+#include <sysdep.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
 
-/* The method is based on a description in
-   Computation of elementary functions on the IBM RISC System/6000 processor,
-   P. W. Markstein, IBM J. Res. Develop, 34(1) 1990.
-   Basically, it consists of two interleaved Newton-Rhapson approximations,
-   one to find the actual square root, and one to find its reciprocal
-   without the expense of a division operation.   The tricky bit here
-   is the use of the POWER/PowerPC multiply-add operation to get the
-   required accuracy with high speed.
-
-   The argument reduction works by a combination of table lookup to
-   obtain the initial guesses, and some careful modification of the
-   generated guesses (which mostly runs on the integer unit, while the
-   Newton-Rhapson is running on the FPU).  */
+#ifdef __STDC__
 float
-__sqrtf(float x)
-{
-  const float inf = a_inf.value;
-  /* x = f_washf(x); *//* This ensures only one exception for SNaN. */
-  if (x > 0)
-    {
-      if (x != inf)
-	{
-	  /* Variables named starting with 's' exist in the
-	     argument-reduced space, so that 2 > sx >= 0.5,
-	     1.41... > sg >= 0.70.., 0.70.. >= sy > 0.35... .
-	     Variables named ending with 'i' are integer versions of
-	     floating-point values.  */
-	  float sx;   /* The value of which we're trying to find the square
-			 root.  */
-	  float sg,g; /* Guess of the square root of x.  */
-	  float sd,d; /* Difference between the square of the guess and x.  */
-	  float sy;   /* Estimate of 1/2g (overestimated by 1ulp).  */
-	  float sy2;  /* 2*sy */
-	  float e;    /* Difference between y*g and 1/2 (note that e==se).  */
-	  float shx;  /* == sx * fsg */
-	  float fsg;  /* sg*fsg == g.  */
-	  fenv_t fe;  /* Saved floating-point environment (stores rounding
-			 mode and whether the inexact exception is
-			 enabled).  */
-	  uint32_t xi, sxi, fsgi;
-	  const float *t_sqrt;
-
-	  GET_FLOAT_WORD (xi, x);
-	  fe = fegetenv_register ();
-	  relax_fenv_state ();
-	  sxi = (xi & 0x3fffffff) | 0x3f000000;
-	  SET_FLOAT_WORD (sx, sxi);
-	  t_sqrt = __t_sqrt + (xi >> (23-8-1)  & 0x3fe);
-	  sg = t_sqrt[0];
-	  sy = t_sqrt[1];
-	  
-	  /* Here we have three Newton-Rhapson iterations each of a
-	     division and a square root and the remainder of the
-	     argument reduction, all interleaved.   */
-	  sd  = -(sg*sg - sx);
-	  fsgi = (xi + 0x40000000) >> 1 & 0x7f800000;
-	  sy2 = sy + sy;
-	  sg  = sy*sd + sg;  /* 16-bit approximation to sqrt(sx). */
-	  e   = -(sy*sg - almost_half);
-	  SET_FLOAT_WORD (fsg, fsgi);
-	  sd  = -(sg*sg - sx);
-	  sy  = sy + e*sy2;
-	  if ((xi & 0x7f800000) == 0)
-	    goto denorm;
-	  shx = sx * fsg;
-	  sg  = sg + sy*sd;  /* 32-bit approximation to sqrt(sx),
-				but perhaps rounded incorrectly.  */
-	  sy2 = sy + sy;
-	  g   = sg * fsg;
-	  e   = -(sy*sg - almost_half);
-	  d   = -(g*sg - shx);
-	  sy  = sy + e*sy2;
-	  fesetenv_register (fe);
-	  return g + sy*d;
-	denorm:
-	  /* For denormalised numbers, we normalise, calculate the
-	     square root, and return an adjusted result.  */
-	  fesetenv_register (fe);
-	  return __sqrtf(x * two48) * twom24;
-	}
-    }
-  else if (x < 0)
-    {
-#ifdef FE_INVALID_SQRT
-      feraiseexcept (FE_INVALID_SQRT);
-      /* For some reason, some PowerPC processors don't implement
-	 FE_INVALID_SQRT.  I guess no-one ever thought they'd be
-	 used for square roots... :-) */
-      if (!fetestexcept (FE_INVALID))
+__sqrtf (float x)		/* wrapper sqrtf */
+#else
+float
+__sqrtf (x)			/* wrapper sqrtf */
+     float x;
 #endif
-	feraiseexcept (FE_INVALID);
-#ifndef _IEEE_LIBM
-      if (_LIB_VERSION != _IEEE_)
-	x = __kernel_standard(x,x,126);
-      else
+{
+#ifdef _IEEE_LIBM
+  return __ieee754_sqrtf (x);
+#else
+  float z;
+  z = __ieee754_sqrtf (x);
+
+  if (_LIB_VERSION == _IEEE_ || (x != x))
+    return z;
+
+  if (x < (float) 0.0)
+    /* sqrtf(negative) */
+    return (float) __kernel_standard ((double) x, (double) x, 126);
+  else
+    return z;
 #endif
-      x = a_nan.value;
-    }
-  return f_washf(x);
 }
 
 weak_alias (__sqrtf, sqrtf)
-/* Strictly, this is wrong, but the only places where _ieee754_sqrt is
-   used will not pass in a negative result.  */
-strong_alias(__sqrtf,__ieee754_sqrtf)
diff --git a/sysdeps/powerpc/powerpc32/sysdep.h b/sysdeps/powerpc/powerpc32/sysdep.h
index 43179d14f0..59761f75b9 100644
--- a/sysdeps/powerpc/powerpc32/sysdep.h
+++ b/sysdeps/powerpc/powerpc32/sysdep.h
@@ -17,10 +17,10 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#ifdef __ASSEMBLER__
-
 #include <sysdeps/powerpc/sysdep.h>
 
+#ifdef __ASSEMBLER__
+
 #ifdef __ELF__
 
 /* If compiled for profiling, call `_mcount' at the start of each
diff --git a/sysdeps/powerpc/sysdep.h b/sysdeps/powerpc/sysdep.h
index 214ac6a2ed..fb668ad51f 100644
--- a/sysdeps/powerpc/sysdep.h
+++ b/sysdeps/powerpc/sysdep.h
@@ -16,6 +16,20 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+/* 
+ * Powerpc Feature masks for the Aux Vector Hardware Capabilities (AT_HWCAP). 
+ * This entry is copied to _dl_hwcap or rtld_global._dl_hwcap during startup.
+ * The following must match the kernels linux/asm/cputable.h.  
+ */
+#define PPC_FEATURE_32			0x80000000 /* 32-bit mode. */
+#define PPC_FEATURE_64			0x40000000 /* 64-bit mode. */
+#define PPC_FEATURE_601_INSTR		0x20000000 /* 601 chip, Old POWER ISA.  */
+#define PPC_FEATURE_HAS_ALTIVEC		0x10000000 /* SIMD/Vector Unit.  */
+#define PPC_FEATURE_HAS_FPU		0x08000000 /* Floating Point Unit.  */
+#define PPC_FEATURE_HAS_MMU		0x04000000 /* Memory Management Unit.  */
+#define PPC_FEATURE_HAS_4xxMAC		0x02000000 /* 4xx Multiply Accumulator.  */
+#define PPC_FEATURE_UNIFIED_CACHE	0x01000000 /* Unified I/D cache.  */
+
 #ifdef __ASSEMBLER__
 
 /* Symbolic names for the registers.  The only portable way to write asm
@@ -146,19 +160,5 @@
 #define ASM_SIZE_DIRECTIVE(name) .size name,.-name
 
 #endif /* __ELF__ */
-
-/* 
- * Powerpc Feature masks for the Aux Vector Hardware Capabilities (AT_HWCAP). 
- * This entry is copied to _dl_hwcap or rtld_global._dl_hwcap during startup.
- * The following must match the kernels linux/asm/cputable.h.  
- */
-#define PPC_FEATURE_32			0x80000000 /* 32-bit mode. */
-#define PPC_FEATURE_64			0x40000000 /* 64-bit mode. */
-#define PPC_FEATURE_601_INSTR		0x20000000 /* 601 chip, Old POWER ISA.  */
-#define PPC_FEATURE_HAS_ALTIVEC		0x10000000 /* SIMD/Vector Unit.  */
-#define PPC_FEATURE_HAS_FPU		0x08000000 /* Floating Point Unit.  */
-#define PPC_FEATURE_HAS_MMU		0x04000000 /* Memory Management Unit.  */
-#define PPC_FEATURE_HAS_4xxMAC		0x02000000 /* 4xx Multiply Accumulator.  */
-#define PPC_FEATURE_UNIFIED_CACHE	0x01000000 /* Unified I/D cache.  */
-
 #endif	/* __ASSEMBLER__ */
+
diff --git a/sysdeps/pthread/aio_misc.c b/sysdeps/pthread/aio_misc.c
index c2eb674212..1da3ad2c73 100644
--- a/sysdeps/pthread/aio_misc.c
+++ b/sysdeps/pthread/aio_misc.c
@@ -27,8 +27,27 @@
 #include <unistd.h>
 #include <sys/stat.h>
 #include <sys/time.h>
+#include <aio_misc.h>
 
-#include "aio_misc.h"
+#ifndef aio_create_helper_thread
+# define aio_create_helper_thread __aio_create_helper_thread
+
+extern inline int
+__aio_create_helper_thread (pthread_t *threadp, void *(*tf) (void *), void *arg)
+{
+  pthread_attr_t attr;
+
+  /* Make sure the thread is created detached.  */
+  pthread_attr_init (&attr);
+  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+
+  int ret = pthread_create (threadp, &attr, tf, arg);
+
+  (void) pthread_attr_destroy (&attr);
+  return ret;
+}                                                                                 
+
+#endif
 
 static void add_request_to_runlist (struct requestlist *newrequest);
 
@@ -400,16 +419,11 @@ __aio_enqueue_request (aiocb_union *aiocbp, int operation)
       if (nthreads < optim.aio_threads && idle_thread_count == 0)
 	{
 	  pthread_t thid;
-	  pthread_attr_t attr;
-
-	  /* Make sure the thread is created detached.  */
-	  pthread_attr_init (&attr);
-	  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
 
 	  running = newp->running = allocated;
 
 	  /* Now try to start a thread.  */
-	  if (pthread_create (&thid, &attr, handle_fildes_io, newp) == 0)
+	  if (aio_create_helper_thread (&thid, handle_fildes_io, newp) == 0)
 	    /* We managed to enqueue the request.  All errors which can
 	       happen now can be recognized by calls to `aio_return' and
 	       `aio_error'.  */
diff --git a/sysdeps/pthread/aio_notify.c b/sysdeps/pthread/aio_notify.c
index d1c0a63fbf..877e8d9363 100644
--- a/sysdeps/pthread/aio_notify.c
+++ b/sysdeps/pthread/aio_notify.c
@@ -1,5 +1,6 @@
 /* Notify initiator of AIO request.
-   Copyright (C) 1997,98,99,2000,2001,2003 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 1999, 2000, 2001, 2003, 2004
+   Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -22,8 +23,11 @@
 #include <pthread.h>
 #include <stdlib.h>
 #include <unistd.h>
-#include "aio_misc.h"
+#include <aio_misc.h>
 
+#ifndef aio_start_notify_thread
+# define aio_start_notify_thread() do { } while (0)
+#endif
 
 struct notify_func
   {
@@ -34,6 +38,7 @@ struct notify_func
 static void *
 notify_func_wrapper (void *arg)
 {
+  aio_start_notify_thread ();
   struct notify_func *const n = arg;
   void (*func) (sigval_t) = n->func;
   sigval_t value = n->value;