about summary refs log tree commit diff
path: root/sysdeps/powerpc/powerpc32
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2003-04-17 19:19:29 +0000
committerUlrich Drepper <drepper@redhat.com>2003-04-17 19:19:29 +0000
commit94c24227fcc1da2d12249e236f2fdde62253778d (patch)
tree2ad42af1f76891576bfce4a28b3825ae95552660 /sysdeps/powerpc/powerpc32
parent66cd688c01778d4f824de236c169e9cfb5c5f4e4 (diff)
downloadglibc-94c24227fcc1da2d12249e236f2fdde62253778d.tar.gz
glibc-94c24227fcc1da2d12249e236f2fdde62253778d.tar.xz
glibc-94c24227fcc1da2d12249e236f2fdde62253778d.zip
Update.
2003-04-16  Jakub Jelinek  <jakub@redhat.com>

	* elf/Makefile (distribute): Add tst-tlsmod{[7-9],1[0-2]}.c and
	tst-tls10.h.
	(tests): Add tst-tls1[0-2].
	(modules-names): Add tst-tlsmod{[7-8],1[0-2]}.
	($(objpfx)tst-tlsmod8.so): Depend on tst-tlsmod7.so.
	($(objpfx)tst-tlsmod10.so): Depend on tst-tlsmod9.so.
	($(objpfx)tst-tlsmod12.so): Depend on tst-tlsmod11.so.
	($(objpfx)tst-tls10): Depend on tst-tlsmod8.so.
	($(objpfx)tst-tls11): Depend on tst-tlsmod10.so.
	($(objpfx)tst-tls12): Depend on tst-tlsmod12.so.
	* elf/tst-tls10.c: New test.
	* elf/tst-tls11.c: New test.
	* elf/tst-tls12.c: New test.
	* elf/tst-tls10.h: New file.
	* elf/tst-tlsmod7.c: New file.
	* elf/tst-tlsmod8.c: New file.
	* elf/tst-tlsmod9.c: New file.
	* elf/tst-tlsmod10.c: New file.
	* elf/tst-tlsmod11.c: New file.
	* elf/tst-tlsmod12.c: New file.

2003-04-15  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/bits/atomic.h: Moved ppc32/64 specific code to ...
	* sysdeps/powerpc/powerpc32/bits/atomic.h: New file.
	* sysdeps/powerpc/powerpc64/bits/atomic.h: New file.

	* posix/regex.h: Include <sys/types.h>.
Diffstat (limited to 'sysdeps/powerpc/powerpc32')
-rw-r--r--sysdeps/powerpc/powerpc32/bits/atomic.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc32/bits/atomic.h b/sysdeps/powerpc/powerpc32/bits/atomic.h
new file mode 100644
index 0000000000..9e56184023
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/bits/atomic.h
@@ -0,0 +1,75 @@
+/* Atomic operations.  PowerPC32 version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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.  */
+
+/*
+ * The 32-bit exchange_bool is different on powerpc64 because the subf
+ * does signed 64-bit arthmatic while the lwarx is 32-bit unsigned
+ * (a load word and zero (high 32) form).  So powerpc64 has a slightly
+ * different version in sysdeps/powerpc/powerpc64/bits/atomic.h.
+ */
+# define __arch_compare_and_exchange_bool_32_acq(mem, newval, oldval) \
+({									      \
+  unsigned int __tmp;							      \
+  __asm __volatile (__ARCH_REL_INSTR "\n"				      \
+		    "1:	lwarx	%0,0,%1\n"				      \
+		    "	subf.	%0,%2,%0\n"				      \
+		    "	bne	2f\n"					      \
+		    "	stwcx.	%3,0,%1\n"				      \
+		    "	bne-	1b\n"					      \
+		    "2:	" __ARCH_ACQ_INSTR				      \
+		    : "=&r" (__tmp)					      \
+		    : "b" (mem), "r" (oldval), "r" (newval)		      \
+		    : "cr0", "memory");					      \
+  __tmp != 0;								      \
+})
+
+/* 
+ * Powerpc32 processors don't implement the 64-bit (doubleword) forms of
+ * load and reserve (ldarx) and store conditional (stdcx.) instructions.  
+ * So for powerpc32 we stub out the 64-bit forms.
+ */
+# define __arch_compare_and_exchange_bool_64_acq(mem, newval, oldval) \
+  (abort (), 0)
+
+# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
+  (abort (), 0)
+
+# define __arch_atomic_exchange_64(mem, value) \
+    ({ abort (); (*mem) = (value); })
+
+# define __arch_atomic_exchange_and_add_64(mem, value) \
+    ({ abort (); (*mem) = (value); })
+
+# define __arch_atomic_decrement_if_positive_64(mem) \
+    ({ abort (); (*mem)--; })
+    
+/* 
+ * Older powerpc32 processors don't support the new "light weight" 
+ * sync (lwsync).  So the only safe option is to use normal sync 
+ * for all powerpc32 applications. 
+ */
+# define atomic_read_barrier()	__asm ("sync" ::: "memory")
+
+/*
+ * Include the rest of the atomic ops macros which are common to both
+ * powerpc32 and powerpc64. 
+ */
+#include_next <bits/atomic.h>
+