Updated to fedora-glibc-20050708T0811

6 files changed, 52 insertions, 12 deletions

diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 1c53e5e505..aa5874a243 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,20 @@
+2005-07-02  Roland McGrath  <roland@redhat.com>
+
+	* Makeconfig: Comment fix.
+
+2005-07-05  Jakub Jelinek  <jakub@redhat.com>
+
+	* descr.h (PTHREAD_STRUCT_END_PADDING): Define.
+	* sysdeps/ia64/tls.h (TLS_PRE_TCB_SIZE): If PTHREAD_STRUCT_END_PADDING
+	is smaller than 8 bytes, increase TLS_PRE_TCB_SIZE by 16 bytes.
+	(THREAD_SYSINFO, THREAD_SELF, DB_THREAD_SELF): Don't assume
+	TLS_PRE_TCB_SIZE is sizeof (struct pthread).
+	(THREAD_SET_STACK_GUARD, THREAD_COPY_STACK_GUARD): Define.
+	* sysdeps/ia64/tcb-offsets.sym (PID, TID, MULTIPLE_THREADS_OFFSET):
+	Use TLS_PRE_TCB_SIZE instead of sizeof (struct pthread).
+	* sysdeps/unix/sysv/linux/ia64/createthread.c (TLS_VALUE): Don't
+	assume TLS_PRE_TCB_SIZE is sizeof (struct pthread).
+
 2005-06-25  Jakub Jelinek  <jakub@redhat.com>
 
 	* sysdeps/i386/tls.h (tcbhead_t): Add stack_guard field.
diff --git a/nptl/Makeconfig b/nptl/Makeconfig
index e7beea0ede..681d76f61f 100644
--- a/nptl/Makeconfig
+++ b/nptl/Makeconfig
@@ -1,4 +1,4 @@
-# Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 # Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -17,7 +17,7 @@
 # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 # 02111-1307 USA.
 
-# Makeconfig fragment for linuxthreads add-on.
+# Makeconfig fragment for NPTL add-on.
 # This gets included at the end of the main glibc Makeconfig.
 
 have-thread-library = yes
diff --git a/nptl/descr.h b/nptl/descr.h
index 454bb2a547..77251d5e45 100644
--- a/nptl/descr.h
+++ b/nptl/descr.h
@@ -254,6 +254,13 @@ struct pthread
 
   /* Resolver state.  */
   struct __res_state res;
+
+  /* If you add fields after the res field above, please adjust
+     the following macro.  */
+#define PTHREAD_STRUCT_END_PADDING \
+  (sizeof (struct pthread) - offsetof (struct pthread, res) \
+   - sizeof (((struct pthread *) 0)->res))
+
 } __attribute ((aligned (TCB_ALIGNMENT)));
 
 
diff --git a/nptl/sysdeps/ia64/tcb-offsets.sym b/nptl/sysdeps/ia64/tcb-offsets.sym
index f5108e0a9e..3bc367082d 100644
--- a/nptl/sysdeps/ia64/tcb-offsets.sym
+++ b/nptl/sysdeps/ia64/tcb-offsets.sym
@@ -1,7 +1,7 @@
 #include <sysdep.h>
 #include <tls.h>
 
-PID			offsetof (struct pthread, pid) - sizeof (struct pthread)
-TID			offsetof (struct pthread, tid) - sizeof (struct pthread)
-MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) - sizeof (struct pthread)
+PID			offsetof (struct pthread, pid) - TLS_PRE_TCB_SIZE
+TID			offsetof (struct pthread, tid) - TLS_PRE_TCB_SIZE
+MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) - TLS_PRE_TCB_SIZE
 SYSINFO_OFFSET		offsetof (tcbhead_t, private)
diff --git a/nptl/sysdeps/ia64/tls.h b/nptl/sysdeps/ia64/tls.h
index a435f966ca..e3ad0681d6 100644
--- a/nptl/sysdeps/ia64/tls.h
+++ b/nptl/sysdeps/ia64/tls.h
@@ -80,8 +80,15 @@ register struct pthread *__thread_self __asm__("r13");
 /* This is the size of the TCB.  */
 # define TLS_TCB_SIZE sizeof (tcbhead_t)
 
-/* This is the size we need before TCB.  */
-# define TLS_PRE_TCB_SIZE sizeof (struct pthread)
+/* This is the size we need before TCB.
+   If there is not any room for uintptr_t stack_guard in struct pthread's
+   final padding, we need to put struct pthread 16 byte slower.  */
+# define TLS_PRE_TCB_SIZE \
+  (sizeof (struct pthread)					\
+   + (PTHREAD_STRUCT_END_PADDING < sizeof (uintptr_t)		\
+      ? ((sizeof (uintptr_t) + __alignof__ (struct pthread) - 1)\
+	 & ~(__alignof__ (struct pthread) - 1))			\
+      : 0))
 
 /* Alignment requirements for the TCB.  */
 # define TLS_TCB_ALIGN __alignof__ (struct pthread)
@@ -106,7 +113,8 @@ register struct pthread *__thread_self __asm__("r13");
   (((tcbhead_t *) (descr))->dtv)
 
 #define THREAD_SELF_SYSINFO	(((tcbhead_t *) __thread_self)->private)
-#define THREAD_SYSINFO(pd)	(((tcbhead_t *) ((pd) + 1))->private)
+#define THREAD_SYSINFO(pd) \
+  (((tcbhead_t *) ((char *) (pd) + TLS_PRE_TCB_SIZE))->private)
 
 #if defined NEED_DL_SYSINFO
 # define INIT_SYSINFO   THREAD_SELF_SYSINFO = (void *) GLRO(dl_sysinfo)
@@ -125,10 +133,11 @@ register struct pthread *__thread_self __asm__("r13");
   (((tcbhead_t *)__thread_self)->dtv)
 
 /* Return the thread descriptor for the current thread.  */
-# define THREAD_SELF (__thread_self - 1)
+# define THREAD_SELF \
+  ((struct pthread *) ((char *) __thread_self - TLS_PRE_TCB_SIZE))
 
 /* Magic for libthread_db to know how to do THREAD_SELF.  */
-# define DB_THREAD_SELF REGISTER (64, 64, 13 * 8, -sizeof (struct pthread))
+# define DB_THREAD_SELF REGISTER (64, 64, 13 * 8, -TLS_PRE_TCB_SIZE)
 
 /* Access to data in the thread descriptor is easy.  */
 #define THREAD_GETMEM(descr, member) \
@@ -140,6 +149,13 @@ register struct pthread *__thread_self __asm__("r13");
 #define THREAD_SETMEM_NC(descr, member, idx, value) \
   descr->member[idx] = (value)
 
+/* Set the stack guard field in TCB head.  */
+#define THREAD_SET_STACK_GUARD(value) \
+  (((uintptr_t *) __thread_self)[-1] = (value))
+#define THREAD_COPY_STACK_GUARD(descr) \
+  (((uintptr_t *) ((char *) (descr) + TLS_PRE_TCB_SIZE))[-1] \
+   = ((uintptr_t *) __thread_self)[-1])
+
 #endif /* __ASSEMBLER__ */
 
 #endif	/* tls.h */
diff --git a/nptl/sysdeps/unix/sysv/linux/ia64/createthread.c b/nptl/sysdeps/unix/sysv/linux/ia64/createthread.c
index 8ac06e8101..cd5f8137d5 100644
--- a/nptl/sysdeps/unix/sysv/linux/ia64/createthread.c
+++ b/nptl/sysdeps/unix/sysv/linux/ia64/createthread.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jakub@redhat.com>.
 
@@ -18,7 +18,7 @@
    02111-1307 USA.  */
 
 /* Value passed to 'clone' for initialization of the thread register.  */
-#define TLS_VALUE (pd + 1)
+#define TLS_VALUE ((char *) pd + TLS_PRE_TCB_SIZE)
 
 #define ARCH_CLONE __clone2