Move bits/atomic.h to atomic-machine.h (bug 14912).

It was noted in
<https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the
bits/*.h naming scheme should only be used for installed headers.
This patch renames bits/atomic.h to atomic-machine.h to follow that
convention.

This is the only change in this series that needs to change the
filename rather than simply removing a directory level (because both
atomic.h and bits/atomic.h exist at present).

Tested for x86_64 (testsuite, and that installed stripped shared
libraries are unchanged by the patch).

	[BZ #14912]
	* sysdeps/aarch64/bits/atomic.h: Move to ...
	* sysdeps/aarch64/atomic-machine.h: ...here.
	(_AARCH64_BITS_ATOMIC_H): Rename macro to
	_AARCH64_ATOMIC_MACHINE_H.
	* sysdeps/alpha/bits/atomic.h: Move to ...
	* sysdeps/alpha/atomic-machine.h: ...here.
	* sysdeps/arm/bits/atomic.h: Move to ...
	* sysdeps/arm/atomic-machine.h: ...here.  Update comments.
	* bits/atomic.h: Move to ...
	* sysdeps/generic/atomic-machine.h: ...here.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/i386/bits/atomic.h: Move to ...
	* sysdeps/i386/atomic-machine.h: ...here.
	* sysdeps/ia64/bits/atomic.h: Move to ...
	* sysdeps/ia64/atomic-machine.h: ...here.
	* sysdeps/m68k/coldfire/bits/atomic.h: Move to ...
	* sysdeps/m68k/coldfire/atomic-machine.h: ...here.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/m68k/m680x0/m68020/bits/atomic.h: Move to ...
	* sysdeps/m68k/m680x0/m68020/atomic-machine.h: ...here.
	* sysdeps/microblaze/bits/atomic.h: Move to ...
	* sysdeps/microblaze/atomic-machine.h: ...here.
	* sysdeps/mips/bits/atomic.h: Move to ...
	* sysdeps/mips/atomic-machine.h: ...here.
	(_MIPS_BITS_ATOMIC_H): Rename macro to _MIPS_ATOMIC_MACHINE_H.
	* sysdeps/powerpc/bits/atomic.h: Move to ...
	* sysdeps/powerpc/atomic-machine.h: ...here.  Update comments.
	* sysdeps/powerpc/powerpc32/bits/atomic.h: Move to ...
	* sysdeps/powerpc/powerpc32/atomic-machine.h: ...here.  Update
	comments.  Include <atomic-machine.h> instead of <bits/atomic.h>.
	* sysdeps/powerpc/powerpc64/bits/atomic.h: Move to ...
	* sysdeps/powerpc/powerpc64/atomic-machine.h: ...here.  Include
	<atomic-machine.h> instead of <bits/atomic.h>.
	* sysdeps/s390/bits/atomic.h: Move to ...
	* sysdeps/s390/atomic-machine.h: ...here.
	* sysdeps/sparc/sparc32/bits/atomic.h: Move to ...
	* sysdeps/sparc/sparc32/atomic-machine.h: ...here.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/sparc/sparc32/sparcv9/bits/atomic.h: Move to ...
	* sysdeps/sparc/sparc32/sparcv9/atomic-machine.h: ...here.
	* sysdeps/sparc/sparc64/bits/atomic.h: Move to ...
	* sysdeps/sparc/sparc64/atomic-machine.h: ...here.
	* sysdeps/tile/bits/atomic.h: Move to ...
	* sysdeps/tile/atomic-machine.h: ...here.
	* sysdeps/tile/tilegx/bits/atomic.h: Move to ...
	* sysdeps/tile/tilegx/atomic-machine.h: ...here.  Include
	<sysdeps/tile/atomic-machine.h> instead of
	<sysdeps/tile/bits/atomic.h>.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/tile/tilepro/bits/atomic.h: Move to ...
	* sysdeps/tile/tilepro/atomic-machine.h: ...here.  Include
	<sysdeps/tile/atomic-machine.h> instead of
	<sysdeps/tile/bits/atomic.h>.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/unix/sysv/linux/arm/bits/atomic.h: Move to ...
	* sysdeps/unix/sysv/linux/arm/atomic-machine.h: ...here.  Include
	<sysdeps/arm/atomic-machine.h> instead of
	<sysdeps/arm/bits/atomic.h>.
	* sysdeps/unix/sysv/linux/hppa/bits/atomic.h: Move to ...
	* sysdeps/unix/sysv/linux/hppa/atomic-machine.h: ...here.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/unix/sysv/linux/m68k/coldfire/bits/atomic.h: Move to ...
	* sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h: ...here.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/unix/sysv/linux/nios2/bits/atomic.h: Move to ...
	* sysdeps/unix/sysv/linux/nios2/atomic-machine.h: ...here.
	(_NIOS2_BITS_ATOMIC_H): Rename macro to _NIOS2_ATOMIC_MACHINE_H.
	* sysdeps/unix/sysv/linux/sh/bits/atomic.h: Move to ...
	* sysdeps/unix/sysv/linux/sh/atomic-machine.h: ...here.
	* sysdeps/x86_64/bits/atomic.h: Move to ...
	* sysdeps/x86_64/atomic-machine.h: ...here.
	* include/atomic.h: Include <atomic-machine.h> instead of
	<bits/atomic.h>.

1 files changed, 345 insertions, 0 deletions

diff --git a/sysdeps/powerpc/atomic-machine.h b/sysdeps/powerpc/atomic-machine.h
new file mode 100644
index 0000000000..a056eb18c4
--- /dev/null
+++ b/sysdeps/powerpc/atomic-machine.h
@@ -0,0 +1,345 @@
+/* Atomic operations.  PowerPC Common version.
+   Copyright (C) 2003-2015 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*
+ * Never include sysdeps/powerpc/atomic-machine.h directly.
+ * Alway use include/atomic.h which will include either
+ * sysdeps/powerpc/powerpc32/atomic-machine.h
+ * or
+ * sysdeps/powerpc/powerpc64/atomic-machine.h
+ * as appropriate and which in turn include this file.
+ */
+
+#include <stdint.h>
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_t;
+typedef int_fast32_t atomic_fast32_t;
+typedef uint_fast32_t uatomic_fast32_t;
+
+typedef int64_t atomic64_t;
+typedef uint64_t uatomic64_t;
+typedef int_fast64_t atomic_fast64_t;
+typedef uint_fast64_t uatomic_fast64_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+/*
+ * Powerpc does not have byte and halfword forms of load and reserve and
+ * store conditional. So for powerpc we stub out the 8- and 16-bit forms.
+ */
+#define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \
+  (abort (), 0)
+
+#define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval) \
+  (abort (), 0)
+
+#define __arch_compare_and_exchange_bool_8_rel(mem, newval, oldval) \
+  (abort (), 0)
+
+#define __arch_compare_and_exchange_bool_16_rel(mem, newval, oldval) \
+  (abort (), 0)
+
+#ifdef UP
+# define __ARCH_ACQ_INSTR	""
+# define __ARCH_REL_INSTR	""
+#else
+# define __ARCH_ACQ_INSTR	"isync"
+# ifndef __ARCH_REL_INSTR
+#  define __ARCH_REL_INSTR	"sync"
+# endif
+#endif
+
+#ifndef MUTEX_HINT_ACQ
+# define MUTEX_HINT_ACQ
+#endif
+#ifndef MUTEX_HINT_REL
+# define MUTEX_HINT_REL
+#endif
+
+#define atomic_full_barrier()	__asm ("sync" ::: "memory")
+
+#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval)	      \
+  ({									      \
+      __typeof (*(mem)) __tmp;						      \
+      __typeof (mem)  __memp = (mem);					      \
+      __asm __volatile (						      \
+		        "1:	lwarx	%0,0,%1" MUTEX_HINT_ACQ "\n"	      \
+		        "	cmpw	%0,%2\n"			      \
+		        "	bne	2f\n"				      \
+		        "	stwcx.	%3,0,%1\n"			      \
+		        "	bne-	1b\n"				      \
+		        "2:	" __ARCH_ACQ_INSTR			      \
+		        : "=&r" (__tmp)					      \
+		        : "b" (__memp), "r" (oldval), "r" (newval)	      \
+		        : "cr0", "memory");				      \
+      __tmp;								      \
+  })
+
+#define __arch_compare_and_exchange_val_32_rel(mem, newval, oldval)	      \
+  ({									      \
+      __typeof (*(mem)) __tmp;						      \
+      __typeof (mem)  __memp = (mem);					      \
+      __asm __volatile (__ARCH_REL_INSTR "\n"				      \
+		        "1:	lwarx	%0,0,%1" MUTEX_HINT_REL "\n"	      \
+		        "	cmpw	%0,%2\n"			      \
+		        "	bne	2f\n"				      \
+		        "	stwcx.	%3,0,%1\n"			      \
+		        "	bne-	1b\n"				      \
+		        "2:	"					      \
+		        : "=&r" (__tmp)					      \
+		        : "b" (__memp), "r" (oldval), "r" (newval)	      \
+		        : "cr0", "memory");				      \
+      __tmp;								      \
+  })
+
+#define __arch_atomic_exchange_32_acq(mem, value)			      \
+  ({									      \
+    __typeof (*mem) __val;						      \
+    __asm __volatile (							      \
+		      "1:	lwarx	%0,0,%2" MUTEX_HINT_ACQ "\n"	      \
+		      "		stwcx.	%3,0,%2\n"			      \
+		      "		bne-	1b\n"				      \
+		      "   " __ARCH_ACQ_INSTR				      \
+		      : "=&r" (__val), "=m" (*mem)			      \
+		      : "b" (mem), "r" (value), "m" (*mem)		      \
+		      : "cr0", "memory");				      \
+    __val;								      \
+  })
+
+#define __arch_atomic_exchange_32_rel(mem, value) \
+  ({									      \
+    __typeof (*mem) __val;						      \
+    __asm __volatile (__ARCH_REL_INSTR "\n"				      \
+		      "1:	lwarx	%0,0,%2" MUTEX_HINT_REL "\n"	      \
+		      "		stwcx.	%3,0,%2\n"			      \
+		      "		bne-	1b"				      \
+		      : "=&r" (__val), "=m" (*mem)			      \
+		      : "b" (mem), "r" (value), "m" (*mem)		      \
+		      : "cr0", "memory");				      \
+    __val;								      \
+  })
+
+#define __arch_atomic_exchange_and_add_32(mem, value) \
+  ({									      \
+    __typeof (*mem) __val, __tmp;					      \
+    __asm __volatile ("1:	lwarx	%0,0,%3\n"			      \
+		      "		add	%1,%0,%4\n"			      \
+		      "		stwcx.	%1,0,%3\n"			      \
+		      "		bne-	1b"				      \
+		      : "=&b" (__val), "=&r" (__tmp), "=m" (*mem)	      \
+		      : "b" (mem), "r" (value), "m" (*mem)		      \
+		      : "cr0", "memory");				      \
+    __val;								      \
+  })
+
+#define __arch_atomic_exchange_and_add_32_acq(mem, value) \
+  ({									      \
+    __typeof (*mem) __val, __tmp;					      \
+    __asm __volatile ("1:	lwarx	%0,0,%3" MUTEX_HINT_ACQ "\n"	      \
+		      "		add	%1,%0,%4\n"			      \
+		      "		stwcx.	%1,0,%3\n"			      \
+		      "		bne-	1b\n"				      \
+		      __ARCH_ACQ_INSTR					      \
+		      : "=&b" (__val), "=&r" (__tmp), "=m" (*mem)	      \
+		      : "b" (mem), "r" (value), "m" (*mem)		      \
+		      : "cr0", "memory");				      \
+    __val;								      \
+  })
+
+#define __arch_atomic_exchange_and_add_32_rel(mem, value) \
+  ({									      \
+    __typeof (*mem) __val, __tmp;					      \
+    __asm __volatile (__ARCH_REL_INSTR "\n"				      \
+		      "1:	lwarx	%0,0,%3" MUTEX_HINT_REL "\n"	      \
+		      "		add	%1,%0,%4\n"			      \
+		      "		stwcx.	%1,0,%3\n"			      \
+		      "		bne-	1b"				      \
+		      : "=&b" (__val), "=&r" (__tmp), "=m" (*mem)	      \
+		      : "b" (mem), "r" (value), "m" (*mem)		      \
+		      : "cr0", "memory");				      \
+    __val;								      \
+  })
+
+#define __arch_atomic_increment_val_32(mem) \
+  ({									      \
+    __typeof (*(mem)) __val;						      \
+    __asm __volatile ("1:	lwarx	%0,0,%2\n"			      \
+		      "		addi	%0,%0,1\n"			      \
+		      "		stwcx.	%0,0,%2\n"			      \
+		      "		bne-	1b"				      \
+		      : "=&b" (__val), "=m" (*mem)			      \
+		      : "b" (mem), "m" (*mem)				      \
+		      : "cr0", "memory");				      \
+    __val;								      \
+  })
+
+#define __arch_atomic_decrement_val_32(mem) \
+  ({									      \
+    __typeof (*(mem)) __val;						      \
+    __asm __volatile ("1:	lwarx	%0,0,%2\n"			      \
+		      "		subi	%0,%0,1\n"			      \
+		      "		stwcx.	%0,0,%2\n"			      \
+		      "		bne-	1b"				      \
+		      : "=&b" (__val), "=m" (*mem)			      \
+		      : "b" (mem), "m" (*mem)				      \
+		      : "cr0", "memory");				      \
+    __val;								      \
+  })
+
+#define __arch_atomic_decrement_if_positive_32(mem) \
+  ({ int __val, __tmp;							      \
+     __asm __volatile ("1:	lwarx	%0,0,%3\n"			      \
+		       "	cmpwi	0,%0,0\n"			      \
+		       "	addi	%1,%0,-1\n"			      \
+		       "	ble	2f\n"				      \
+		       "	stwcx.	%1,0,%3\n"			      \
+		       "	bne-	1b\n"				      \
+		       "2:	" __ARCH_ACQ_INSTR			      \
+		       : "=&b" (__val), "=&r" (__tmp), "=m" (*mem)	      \
+		       : "b" (mem), "m" (*mem)				      \
+		       : "cr0", "memory");				      \
+     __val;								      \
+  })
+
+#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
+  ({									      \
+    __typeof (*(mem)) __result;						      \
+    if (sizeof (*mem) == 4)						      \
+      __result = __arch_compare_and_exchange_val_32_acq(mem, newval, oldval); \
+    else if (sizeof (*mem) == 8)					      \
+      __result = __arch_compare_and_exchange_val_64_acq(mem, newval, oldval); \
+    else 								      \
+       abort ();							      \
+    __result;								      \
+  })
+
+#define atomic_compare_and_exchange_val_rel(mem, newval, oldval) \
+  ({									      \
+    __typeof (*(mem)) __result;						      \
+    if (sizeof (*mem) == 4)						      \
+      __result = __arch_compare_and_exchange_val_32_rel(mem, newval, oldval); \
+    else if (sizeof (*mem) == 8)					      \
+      __result = __arch_compare_and_exchange_val_64_rel(mem, newval, oldval); \
+    else 								      \
+       abort ();							      \
+    __result;								      \
+  })
+
+#define atomic_exchange_acq(mem, value) \
+  ({									      \
+    __typeof (*(mem)) __result;						      \
+    if (sizeof (*mem) == 4)						      \
+      __result = __arch_atomic_exchange_32_acq (mem, value);		      \
+    else if (sizeof (*mem) == 8)					      \
+      __result = __arch_atomic_exchange_64_acq (mem, value);		      \
+    else 								      \
+       abort ();							      \
+    __result;								      \
+  })
+
+#define atomic_exchange_rel(mem, value) \
+  ({									      \
+    __typeof (*(mem)) __result;						      \
+    if (sizeof (*mem) == 4)						      \
+      __result = __arch_atomic_exchange_32_rel (mem, value);		      \
+    else if (sizeof (*mem) == 8)					      \
+      __result = __arch_atomic_exchange_64_rel (mem, value);		      \
+    else 								      \
+       abort ();							      \
+    __result;								      \
+  })
+
+#define atomic_exchange_and_add(mem, value) \
+  ({									      \
+    __typeof (*(mem)) __result;						      \
+    if (sizeof (*mem) == 4)						      \
+      __result = __arch_atomic_exchange_and_add_32 (mem, value);	      \
+    else if (sizeof (*mem) == 8)					      \
+      __result = __arch_atomic_exchange_and_add_64 (mem, value);	      \
+    else 								      \
+       abort ();							      \
+    __result;								      \
+  })
+#define atomic_exchange_and_add_acq(mem, value) \
+  ({									      \
+    __typeof (*(mem)) __result;						      \
+    if (sizeof (*mem) == 4)						      \
+      __result = __arch_atomic_exchange_and_add_32_acq (mem, value);	      \
+    else if (sizeof (*mem) == 8)					      \
+      __result = __arch_atomic_exchange_and_add_64_acq (mem, value);	      \
+    else 								      \
+       abort ();							      \
+    __result;								      \
+  })
+#define atomic_exchange_and_add_rel(mem, value) \
+  ({									      \
+    __typeof (*(mem)) __result;						      \
+    if (sizeof (*mem) == 4)						      \
+      __result = __arch_atomic_exchange_and_add_32_rel (mem, value);	      \
+    else if (sizeof (*mem) == 8)					      \
+      __result = __arch_atomic_exchange_and_add_64_rel (mem, value);	      \
+    else 								      \
+       abort ();							      \
+    __result;								      \
+  })
+
+#define atomic_increment_val(mem) \
+  ({									      \
+    __typeof (*(mem)) __result;						      \
+    if (sizeof (*(mem)) == 4)						      \
+      __result = __arch_atomic_increment_val_32 (mem);			      \
+    else if (sizeof (*(mem)) == 8)					      \
+      __result = __arch_atomic_increment_val_64 (mem);			      \
+    else 								      \
+       abort ();							      \
+    __result;								      \
+  })
+
+#define atomic_increment(mem) ({ atomic_increment_val (mem); (void) 0; })
+
+#define atomic_decrement_val(mem) \
+  ({									      \
+    __typeof (*(mem)) __result;						      \
+    if (sizeof (*(mem)) == 4)						      \
+      __result = __arch_atomic_decrement_val_32 (mem);			      \
+    else if (sizeof (*(mem)) == 8)					      \
+      __result = __arch_atomic_decrement_val_64 (mem);			      \
+    else 								      \
+       abort ();							      \
+    __result;								      \
+  })
+
+#define atomic_decrement(mem) ({ atomic_decrement_val (mem); (void) 0; })
+
+
+/* Decrement *MEM if it is > 0, and return the old value.  */
+#define atomic_decrement_if_positive(mem) \
+  ({ __typeof (*(mem)) __result;					      \
+    if (sizeof (*mem) == 4)						      \
+      __result = __arch_atomic_decrement_if_positive_32 (mem);		      \
+    else if (sizeof (*mem) == 8)					      \
+      __result = __arch_atomic_decrement_if_positive_64 (mem);		      \
+    else								      \
+       abort ();							      \
+    __result;								      \
+  })