GNU C Library master sources branch, master, updated. glibc-2.14-304-g7a775e6

[schwab at sourceware dot org]

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http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=7a775e6b3d938586db5a66a76de9c14667151cf9

commit 7a775e6b3d938586db5a66a76de9c14667151cf9
Author: Andreas Schwab <schwab@redhat.com>
Date:   Thu Sep 15 14:48:01 2011 +0200

    Avoid race between {,__de}allocate_stack and __reclaim_stacks during fork

diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 15c785b..ae48299 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,12 @@
+2011-09-15  Andreas Schwab  <schwab@redhat.com>
+
+	* sysdeps/pthread/list.h: Define only list_t if __need_list_t is
+	defined.
+	(list_add): Add atomic_write_barrier.
+	* descr.h: Define __need_list_t before including <list.h>.
+	* nptl-init.c: Include <list.h>
+	* allocatestack.c: Likewise.
+
 2011-09-11  Ulrich Drepper  <drepper@gmail.com>
 
 	* sysdeps/i386/tls.h: Remove HAVE_TLS_SUPPORT test.
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c
index 23d2ce5..36b4aa1 100644
--- a/nptl/allocatestack.c
+++ b/nptl/allocatestack.c
@@ -28,6 +28,7 @@
 #include <dl-sysdep.h>
 #include <dl-tls.h>
 #include <tls.h>
+#include <list.h>
 #include <lowlevellock.h>
 #include <kernel-features.h>
 
diff --git a/nptl/descr.h b/nptl/descr.h
index 9c366e7..e57e29e 100644
--- a/nptl/descr.h
+++ b/nptl/descr.h
@@ -26,6 +26,7 @@
 #include <stdbool.h>
 #include <sys/types.h>
 #include <hp-timing.h>
+#define __need_list_t
 #include <list.h>
 #include <lowlevellock.h>
 #include <pthreaddef.h>
diff --git a/nptl/nptl-init.c b/nptl/nptl-init.c
index 33492c1..db45cab 100644
--- a/nptl/nptl-init.c
+++ b/nptl/nptl-init.c
@@ -29,6 +29,7 @@
 #include <atomic.h>
 #include <ldsodefs.h>
 #include <tls.h>
+#include <list.h>
 #include <fork.h>
 #include <version.h>
 #include <shlib-compat.h>
diff --git a/nptl/sysdeps/pthread/list.h b/nptl/sysdeps/pthread/list.h
index 6ddccb9..cfc4aba 100644
--- a/nptl/sysdeps/pthread/list.h
+++ b/nptl/sysdeps/pthread/list.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2009, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -18,27 +18,39 @@
    02111-1307 USA.  */
 
 #ifndef _LIST_H
-#define _LIST_H	1
+
+#ifndef __need_list_t
+# define _LIST_H	1
+#endif
 
 /* The definitions of this file are adopted from those which can be
    found in the Linux kernel headers to enable people familiar with
    the latter find their way in these sources as well.  */
 
 
+#if defined __need_list_t || defined _LIST_H
+# ifndef __list_t_defined
+#  define __list_t_defined
 /* Basic type for the double-link list.  */
 typedef struct list_head
 {
   struct list_head *next;
   struct list_head *prev;
 } list_t;
+# endif
+# undef __need_list_t
+#endif
+
+#ifdef _LIST_H
 
+# include <atomic.h>
 
 /* Define a variable with the head and tail of the list.  */
-#define LIST_HEAD(name) \
+# define LIST_HEAD(name) \
   list_t name = { &(name), &(name) }
 
 /* Initialize a new list head.  */
-#define INIT_LIST_HEAD(ptr) \
+# define INIT_LIST_HEAD(ptr) \
   (ptr)->next = (ptr)->prev = (ptr)
 
 
@@ -49,6 +61,7 @@ list_add (list_t *newp, list_t *head)
   newp->next = head->next;
   newp->prev = head;
   head->next->prev = newp;
+  atomic_write_barrier ();
   head->next = newp;
 }
 
@@ -78,26 +91,28 @@ list_splice (list_t *add, list_t *head)
 
 
 /* Get typed element from list at a given position.  */
-#define list_entry(ptr, type, member) \
+# define list_entry(ptr, type, member) \
   ((type *) ((char *) (ptr) - (unsigned long) (&((type *) 0)->member)))
 
 
 
 /* Iterate forward over the elements of the list.  */
-#define list_for_each(pos, head) \
+# define list_for_each(pos, head) \
   for (pos = (head)->next; pos != (head); pos = pos->next)
 
 
 /* Iterate forward over the elements of the list.  */
-#define list_for_each_prev(pos, head) \
+# define list_for_each_prev(pos, head) \
   for (pos = (head)->prev; pos != (head); pos = pos->prev)
 
 
 /* Iterate backwards over the elements list.  The list elements can be
    removed from the list while doing this.  */
-#define list_for_each_prev_safe(pos, p, head) \
+# define list_for_each_prev_safe(pos, p, head) \
   for (pos = (head)->prev, p = pos->prev; \
        pos != (head); \
        pos = p, p = pos->prev)
 
+#endif /* _LIST_H */
+
 #endif	/* list.h */
diff --git a/nptl_db/ChangeLog b/nptl_db/ChangeLog
index f79fc18..81ebfcd 100644
--- a/nptl_db/ChangeLog
+++ b/nptl_db/ChangeLog
@@ -1,3 +1,7 @@
+2011-09-15  Andreas Schwab  <schwab@redhat.com>
+
+	* thread_dbP.h: Include <list.h>
+
 2009-08-23  Roland McGrath  <roland@redhat.com>
 
 	* td_ta_map_lwp2thr.c (__td_ta_lookup_th_unique): Move ta_ok check
diff --git a/nptl_db/thread_dbP.h b/nptl_db/thread_dbP.h
index e5db9bf..54f5fc8 100644
--- a/nptl_db/thread_dbP.h
+++ b/nptl_db/thread_dbP.h
@@ -1,5 +1,5 @@
 /* Private header for thread debug library
-   Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2007, 2011 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
@@ -29,6 +29,7 @@
 #include "proc_service.h"
 #include "thread_db.h"
 #include "../nptl/pthreadP.h"  	/* This is for *_BITMASK only.  */
+#include <list.h>
 
 /* Indeces for the symbol names.  */
 enum

http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=edc121be8b53da57950daf6f42a619b5826f30b6

commit edc121be8b53da57950daf6f42a619b5826f30b6
Author: Andreas Schwab <schwab@redhat.com>
Date:   Thu Sep 15 11:16:03 2011 +0200

    Fix PLT uses in libm on powerpc

diff --git a/ChangeLog b/ChangeLog
index 57195c2..6dd445b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+2011-09-15  Andreas Schwab  <schwab@redhat.com>
+
+	* sysdeps/powerpc/fpu/e_hypot.c (__ieee754_hypot): Use
+	__ieee754_sqrt instead of sqrt.
+	* sysdeps/powerpc/fpu/e_hypotf.c (__ieee754_hypotf): Use
+	__ieee754_sqrtf instead of sqrtf.
+	* sysdeps/powerpc/fpu/e_rem_pio2f.c (__ieee754_rem_pio2f): Use
+	__floorf instead of floorf.
+	* sysdeps/powerpc/fpu/k_rem_pio2f.c (__fp_kernel_rem_pio2f): Use
+	__floorf, __truncf instead of floorf, truncf.
+
 2011-09-14  Ulrich Drepper  <drepper@gmail.com>
 
 	* sysdeps/x86_64/fpu/s_copysign.S [ELF]: Use correct section.
diff --git a/sysdeps/powerpc/fpu/e_hypot.c b/sysdeps/powerpc/fpu/e_hypot.c
index 22bd563..afbcc18 100644
--- a/sysdeps/powerpc/fpu/e_hypot.c
+++ b/sysdeps/powerpc/fpu/e_hypot.c
@@ -96,7 +96,7 @@ __ieee754_hypot (double x, double y)
     {
       x *= twoM600;
       y *= twoM600;
-      return sqrt (x * x + y * y) / twoM600;
+      return __ieee754_sqrt (x * x + y * y) / twoM600;
     }
   if (y < twoM500)
     {
@@ -104,14 +104,14 @@ __ieee754_hypot (double x, double y)
 	{
 	  x *= two1022;
 	  y *= two1022;
-	  return sqrt (x * x + y * y) / two1022;
+	  return __ieee754_sqrt (x * x + y * y) / two1022;
 	}
       else
 	{
 	  x *= two600;
 	  y *= two600;
-	  return sqrt (x * x + y * y) / two600;
+	  return __ieee754_sqrt (x * x + y * y) / two600;
 	}
     }
-  return sqrt (x * x + y * y);
+  return __ieee754_sqrt (x * x + y * y);
 }
diff --git a/sysdeps/powerpc/fpu/e_hypotf.c b/sysdeps/powerpc/fpu/e_hypotf.c
index 3e6c597..02ad773 100644
--- a/sysdeps/powerpc/fpu/e_hypotf.c
+++ b/sysdeps/powerpc/fpu/e_hypotf.c
@@ -97,7 +97,7 @@ __ieee754_hypotf (float x, float y)
     {
       x *= twoM60;
       y *= twoM60;
-      return sqrtf (x * x + y * y) / twoM60;
+      return __ieee754_sqrtf (x * x + y * y) / twoM60;
     }
   if (y < twoM50)
     {
@@ -105,14 +105,14 @@ __ieee754_hypotf (float x, float y)
 	{
 	  x *= two126;
 	  y *= two126;
-	  return sqrtf (x * x + y * y) / two126;
+	  return __ieee754_sqrtf (x * x + y * y) / two126;
 	}
       else
 	{
 	  x *= two60;
 	  y *= two60;
-	  return sqrtf (x * x + y * y) / two60;
+	  return __ieee754_sqrtf (x * x + y * y) / two60;
 	}
     }
-  return sqrtf (x * x + y * y);
+  return __ieee754_sqrtf (x * x + y * y);
 }
diff --git a/sysdeps/powerpc/fpu/e_rem_pio2f.c b/sysdeps/powerpc/fpu/e_rem_pio2f.c
index 9325eeb..e4427e4 100644
--- a/sysdeps/powerpc/fpu/e_rem_pio2f.c
+++ b/sysdeps/powerpc/fpu/e_rem_pio2f.c
@@ -112,7 +112,7 @@ __ieee754_rem_pio2f (float x, float *y)
     }
   if (ax <= pio2_2e7)
     {
-      n = floorf (ax * invpio2 + half);
+      n = __floorf (ax * invpio2 + half);
       i = (int32_t) n;
       r = ax - n * pio2_1;
       w = n * pio2_1t;		/* 1st round good to 40 bit */
@@ -168,11 +168,11 @@ __ieee754_rem_pio2f (float x, float *y)
   e0 = __float_and8 (ax / 128.0);
   z = ax / e0;
 
-  tx[0] = floorf (z);
+  tx[0] = __floorf (z);
   z = (z - tx[0]) * two8;
-  tx[1] = floorf (z);
+  tx[1] = __floorf (z);
   z = (z - tx[1]) * two8;
-  tx[2] = floorf (z);
+  tx[2] = __floorf (z);
 
   nx = 3;
   while (tx[nx - 1] == zero)
diff --git a/sysdeps/powerpc/fpu/k_rem_pio2f.c b/sysdeps/powerpc/fpu/k_rem_pio2f.c
index 9635340..7090605 100644
--- a/sysdeps/powerpc/fpu/k_rem_pio2f.c
+++ b/sysdeps/powerpc/fpu/k_rem_pio2f.c
@@ -135,16 +135,16 @@ recompute:
   /* distill q[] into iq[] reversingly */
   for (i = 0, j = jz, z = q[jz]; j > 0; i++, j--)
     {
-      fw = truncf (twon8 * z);
+      fw = __truncf (twon8 * z);
       iq[i] = (int32_t) (z - two8 * fw);
       z = q[j - 1] + fw;
     }
 
   /* compute n */
   z = __scalbnf (z, q0);	/* actual value of z */
-  z -= 8.0 * floorf (z * 0.125);	/* trim off integer >= 8 */
+  z -= 8.0 * __floorf (z * 0.125);	/* trim off integer >= 8 */
   n = (int32_t) z;
-  z -= truncf (z);
+  z -= __truncf (z);
   ih = 0;
   if (q0 > 0)
     {				/* need iq[jz-1] to determine n */
@@ -234,7 +234,7 @@ recompute:
       z = __scalbnf (z, -q0);
       if (z >= two8)
 	{
-	  fw = truncf (twon8 * z);
+	  fw = __truncf (twon8 * z);
 	  iq[jz] = (int32_t) (z - two8 * fw);
 	  jz += 1;
 	  q0 += 8;

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                         |   11 +++++++++++
 nptl/ChangeLog                    |    9 +++++++++
 nptl/allocatestack.c              |    1 +
 nptl/descr.h                      |    1 +
 nptl/nptl-init.c                  |    1 +
 nptl/sysdeps/pthread/list.h       |   31 +++++++++++++++++++++++--------
 nptl_db/ChangeLog                 |    4 ++++
 nptl_db/thread_dbP.h              |    3 ++-
 sysdeps/powerpc/fpu/e_hypot.c     |    8 ++++----
 sysdeps/powerpc/fpu/e_hypotf.c    |    8 ++++----
 sysdeps/powerpc/fpu/e_rem_pio2f.c |    8 ++++----
 sysdeps/powerpc/fpu/k_rem_pio2f.c |    8 ++++----
 12 files changed, 68 insertions(+), 25 deletions(-)


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