(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

3 files changed, 40 insertions, 62 deletions

diff --git a/nptl/sysdeps/powerpc/jmpbuf-unwind.h b/nptl/sysdeps/powerpc/jmpbuf-unwind.h
new file mode 100644
index 0000000000..0b817160d3
--- /dev/null
+++ b/nptl/sysdeps/powerpc/jmpbuf-unwind.h
@@ -0,0 +1,31 @@
+/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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 <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+  _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+  ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_GPR1] - (_adj))
+
+/* We use the normal lobngjmp for unwinding.  */
+#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
diff --git a/nptl/sysdeps/powerpc/tcb-offsets.sym b/nptl/sysdeps/powerpc/tcb-offsets.sym
index 4a8671e802..a9701fb5b7 100644
--- a/nptl/sysdeps/powerpc/tcb-offsets.sym
+++ b/nptl/sysdeps/powerpc/tcb-offsets.sym
@@ -6,12 +6,10 @@
 -- Abuse tls.h macros to derive offsets relative to the thread register.
 # undef __thread_register
 # define __thread_register	((void *) 0)
-# define thread_offsetof(mem)	((ptrdiff_t) THREAD_SELF + offsetof (struct pthread, mem))
-
+# define thread_offsetof(mem)	((void *) &THREAD_SELF->mem - (void *) 0)
 
 #if TLS_MULTIPLE_THREADS_IN_TCB
 MULTIPLE_THREADS_OFFSET		thread_offsetof (header.multiple_threads)
 #endif
 PID				thread_offsetof (pid)
 TID				thread_offsetof (tid)
-POINTER_GUARD			(offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
diff --git a/nptl/sysdeps/powerpc/tls.h b/nptl/sysdeps/powerpc/tls.h
index ad5698c6f8..ce7f5bd53d 100644
--- a/nptl/sysdeps/powerpc/tls.h
+++ b/nptl/sysdeps/powerpc/tls.h
@@ -1,5 +1,5 @@
 /* Definition for thread-local data handling.  NPTL/PowerPC version.
-   Copyright (C) 2003, 2005, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2003 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
@@ -23,7 +23,6 @@
 # include <dl-sysdep.h>
 
 #ifndef __ASSEMBLER__
-# include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
 
@@ -31,11 +30,7 @@
 typedef union dtv
 {
   size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
+  void *pointer;
 } dtv_t;
 
 #else /* __ASSEMBLER__ */
@@ -65,13 +60,11 @@ typedef union dtv
 /* Get the thread descriptor definition.  */
 # include <nptl/descr.h>
 
-/* The stack_guard is accessed directly by GCC -fstack-protector code,
-   so it is a part of public ABI.  The dtv and pointer_guard fields
-   are private.  */
+/* This layout is actually wholly private and not affected by the ABI.
+   Nor does it overlap the pthread data structure, so we need nothing
+   extra here at all.  */
 typedef struct
 {
-  uintptr_t pointer_guard;
-  uintptr_t stack_guard;
   dtv_t *dtv;
 } tcbhead_t;
 
@@ -129,7 +122,7 @@ register void *__thread_register __asm__ ("r13");
 
 /* Return the address of the dtv for the current thread.  */
 # define THREAD_DTV() \
-    (((tcbhead_t *) (__thread_register - TLS_TCB_OFFSET))[-1].dtv)
+     (((tcbhead_t *) (__thread_register - TLS_TCB_OFFSET))[-1].dtv)
 
 /* Return the thread descriptor for the current thread.  */
 # define THREAD_SELF \
@@ -138,9 +131,9 @@ register void *__thread_register __asm__ ("r13");
 
 /* Magic for libthread_db to know how to do THREAD_SELF.  */
 # define DB_THREAD_SELF							      \
-  REGISTER (32, 32, PT_THREAD_POINTER * 4,				      \
+  REGISTER (32, 32, PT_THREAD_POINTER * 4,					      \
 	    - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)			      \
-  REGISTER (64, 64, PT_THREAD_POINTER * 8,				      \
+  REGISTER (64, 64, PT_THREAD_POINTER * 8,					      \
 	    - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
 
 /* Read member of the thread descriptor directly.  */
@@ -158,54 +151,10 @@ register void *__thread_register __asm__ ("r13");
 # define THREAD_SETMEM_NC(descr, member, idx, value) \
     ((void)(descr), (THREAD_SELF)->member[idx] = (value))
 
-/* Set the stack guard field in TCB head.  */
-# define THREAD_SET_STACK_GUARD(value) \
-    (((tcbhead_t *) ((char *) __thread_register				      \
-		     - TLS_TCB_OFFSET))[-1].stack_guard = (value))
-# define THREAD_COPY_STACK_GUARD(descr) \
-    (((tcbhead_t *) ((char *) (descr)					      \
-		     + TLS_PRE_TCB_SIZE))[-1].stack_guard		      \
-     = ((tcbhead_t *) ((char *) __thread_register			      \
-		       - TLS_TCB_OFFSET))[-1].stack_guard)
-
-/* Set the stack guard field in TCB head.  */
-# define THREAD_GET_POINTER_GUARD() \
-    (((tcbhead_t *) ((char *) __thread_register				      \
-		     - TLS_TCB_OFFSET))[-1].pointer_guard)
-# define THREAD_SET_POINTER_GUARD(value) \
-    (THREAD_GET_POINTER_GUARD () = (value))
-# define THREAD_COPY_POINTER_GUARD(descr) \
-    (((tcbhead_t *) ((char *) (descr)					      \
-		     + TLS_PRE_TCB_SIZE))[-1].pointer_guard		      \
-     = THREAD_GET_POINTER_GUARD())
-
 /* l_tls_offset == 0 is perfectly valid on PPC, so we have to use some
    different value to mean unset l_tls_offset.  */
 # define NO_TLS_OFFSET		-1
 
-/* Get and set the global scope generation counter in struct pthread.  */
-#define THREAD_GSCOPE_FLAG_UNUSED 0
-#define THREAD_GSCOPE_FLAG_USED   1
-#define THREAD_GSCOPE_FLAG_WAIT   2
-#define THREAD_GSCOPE_RESET_FLAG() \
-  do									     \
-    { int __res								     \
-	= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag,	     \
-			       THREAD_GSCOPE_FLAG_UNUSED);		     \
-      if (__res == THREAD_GSCOPE_FLAG_WAIT)				     \
-	lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1);		     \
-    }									     \
-  while (0)
-#define THREAD_GSCOPE_SET_FLAG() \
-  do									     \
-    {									     \
-      THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED;	     \
-      atomic_write_barrier ();						     \
-    }									     \
-  while (0)
-#define THREAD_GSCOPE_WAIT() \
-  GL(dl_wait_lookup_done) ()
-
 #endif /* __ASSEMBLER__ */
 
 #endif	/* tls.h */