Initial revision cvs/initial

2002-11-26  Ulrich Drepper  <drepper@redhat.com>
	* allocatestack.c (queue_stack): Don't remove stack from list here.
	Do it in the caller.  Correct condition to prematurely terminate
	loop to free stacks.
	(__deallocate_stack): Remove stack from list here.
2002-11-26  Ulrich Drepper  <drepper@redhat.com>
	* Makefile (tests): Add tst-stack1.
	* tst-stack1.c: New file.
	* allocatestack.c (allocate_stack): Initialize the TCB on a user
	provided stack.
	* pthread_attr_getstack.c: Return bottom of the thread area.
2002-11-25  Ulrich Drepper  <drepper@redhat.com>
	* Makefile (libpthread-routines): Add pt-allocrtsig and
	pthread_kill_other_threads.
	* pt-allocrtsig.c: New file.
	* pthread_kill_other_threads.c: New file.
	* sysdeps/unix/sysv/linux/allocrtsig.c: Add additional aliases for
	all three functions.
	* sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Remove
	allocrtsig.
	* sysdeps/unix/sysv/linux/Versions (libc:GLIBC_PRIVATE): Export
	__libc_current_sigrtmin_private, __libc_current_sigrtmax_private,
	and __libc_allocate_rtsig_private.
	* Versions (libpthread): Export pthread_kill_other_threads_np,
	__libc_current_sigrtmin, and __libc_current_sigrtmax.
2002-11-24  Ulrich Drepper  <drepper@redhat.com>

	* allocatestack.c (allocate_stack): stackaddr in attribute points to
	the end of the stack.  Adjust computations.
	When mprotect call fails dequeue stack and free it.
	* pthread_attr_setstack.c: Store top of the stack in stackaddr
	attribute.
	* pthread_getattr_np.c: Likewise.

	* descr.h (IS_DETACHED): Add some more parenthesis to prevent
	surprises.

2002-11-23  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/pthread/pthread.h (pthread_self): __THROW must come before
	attribute definitions.  Patch by Luca Barbieri <ldb@ldb.ods.org>.

2002-11-22  Ulrich Drepper  <drepper@redhat.com>

	* pthread_getspecific.c: Optimize access to first 2nd-level array.
	* pthread_setspecific.c: Likewise.

2002-11-21  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/i386/createthread.c: Remove CLONE_ flags
	definitions.  Get them from the official place.
	* sysdeps/unix/sysv/linux/i386/fork.c: Likewise.

	* sysdeps/unix/sysv/linux/i386/createthread.c: Update CLONE_* flags.
	Use new CLONE_ flags in clone() calls.

	* sysdeps/unix/sysv/linux/fork.c: Use ARCH_FORK to actually fork.
	* sysdeps/unix/sysv/linux/i386/fork.c: New file.

	* Versions: Add pthread_* functions for libc.
	* forward.c: New file.

	* sysdeps/pthread/Makefile (libpthread-sysdeps_routines): Add
	errno-loc.
	* herrno.c: New file.
	* res.c: New file.

	* Makefile (libpthread-routines): Remove sem_post, sem_wait,
	sem_trywait, and sem_timedwait.  Add herrno and res.
	* sem_init.c: Don't initialize lock and waiters members.
	* sem_open.c: Likewise.
	* sem_post.c: Removed.
	* sem_wait.c: Removed.
	* sem_trywait.c: Removed.
	* sem_timedwait.c: Removed.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S: Complete rewrite.
	Includes full implementations of sem_post, sem_wait, sem_trywait,
	and sem_timedwait.
	* sysdeps/unix/sysv/linux/i386/lowlevelsem.h (lll_sem_post): Adjust
	for new implementation.
	* sysdeps/unix/sysv/linux/internaltypes.h (struct sem): Remove lock
	and waiters fields.

	* tst-sem3.c: Improve error message.
	* tst-signal3.c: Likewise.

	* init.c (__pthread_initialize_minimal): Use set_tid_address syscall
	to tell the kernel about the termination futex and to initialize tid
	member.  Don't initialize main_thread.
	* descr.h (struct pthread): Remove main_thread member.
	* cancelllation.c (__do_cancel): Remove code handling main thread.
	The main thread is not special anymore.

	* allocatestack.c (__reclaim_stacks): Mark stacks as unused.  Add
	size of the stacks to stack_cache_actsize.

	* pt-readv.c: Add missing "defined".
	* pt-sigwait.c: Likewise.
	* pt-writev.c: Likewise.

2002-11-09  Ulrich Drepper  <drepper@redhat.com>

	* Versions: Export __connect from libpthread.
	Patch by Luca Barbieri <ldb@ldb.ods.org>.

	* Makefile (libpthread-routines): Add pt-raise.
	* sysdeps/unix/sysv/linux/raise.c: New file.
	* sysdeps/unix/sysv/linux/pt-raise.c: New file.
	* sysdeps/generic/pt-raise.c: New file.

	* pthread_cond_init.c: Initialize all data elements of the condvar
	structure.  Patch by Luca Barbieri <ldb@ldb.ods.org>.

	* pthread_attr_init.c: Actually implement 2.0 compatibility version.
	* pthread_create.c: Likewise.

	* Makefile (tests): Add tst-key1, tst-key2, tst-key3.
	* tst-key1.c: New file.
	* tst-key2.c: New file.
	* tst-key3.c: New file.

	* Versions: Export pthread_detach for version GLIBC_2.0.
	Reported by Saurabh Desai <sdesai@austin.ibm.com>.

2002-11-08  Ulrich Drepper  <drepper@redhat.com>

	* pthread_key_create.c: Terminate search after an unused key was found.
	Patch by Luca Barbieri <ldb@ldb.ods.org>.

	* sysdeps/unix/sysv/linux/i386/pthread_once.S: Return zero.
	Patch by Luca Barbieri <ldb@ldb.ods.org>.

2002-10-10  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S: Use slow generic
	dynamic lookup for errno in PIC.

	* allocatestack.c (get_cached_stack): Rearrange code slightly to
	release the stack lock as soon as possible.
	Call _dl_allocate_tls_init for TCB from the cache to re-initialize
	the static TLS block.
	(allocate_stack): Call _dl_allocate_tls_init for user-provided stack.

	* cancellation.c: Renamed from cancelation.c.
	* Makefile: Adjust accordingly.
	* pthreadP.h (CANCELLATION_P): Renamed from CANCELATION_P.
	* cleanup_defer.c: Use CANCELLATION_P.
	* pthread_testcancel.c: Likewise.
	* descr.h: Fix spelling in comments.
	* init.c: Likewise.
	* pthread_getattr_np.c: Likewise.
	* pthread_getschedparam.c: Likewise.
	* pthread_setschedparam.c: Likewise.
	* Versions: Likewise.

	* pt-pselect.c: New file.
	* Makefile (libpthread-routines): Add pt-pselect.
	* Versions: Add pselect.

	* tst-cancel4.c: New file.
	* Makefile (tests): Add tst-cancel4.

2002-10-09  Ulrich Drepper  <drepper@redhat.com>

	* pthread_mutex_lock.c: Always record lock ownership.
	* pthread_mutex_timedlock.c: Likewise.
	* pthread_mutex_trylock.c: Likewise.

	* pt-readv.c: New file.
	* pt-writev.c: New file.
	* pt-creat.c: New file.
	* pt-msgrcv.c: New file.
	* pt-msgsnd.c: New file.
	* pt-poll.c: New file.
	* pt-select.c: New file.
	* pt-sigpause.c: New file.
	* pt-sigsuspend.c: New file.
	* pt-sigwait.c: New file.
	* pt-sigwaitinfo.c: New file.
	* pt-waitid.c: New file.
	* Makefile (libpthread-routines): Add pt-readv, pt-writev, pt-creat,
	pt-msgrcv, pt-msgsnd, pt-poll, pt-select, pt-sigpause, pt-sigsuspend,
	pt-sigwait, pt-sigwaitinfo, and pt-waitid.
	* Versions: Add all the new functions.

	* tst-exit1.c: New file.
	* Makefile (tests): Add tst-exit1.

	* sem_timedwait.c: Minor optimization for more optimal fastpath.

2002-10-08  Ulrich Drepper  <drepper@redhat.com>

	* pt-fcntl.c: Only enable asynchronous cancellation for F_SETLKW.

	* pthread_join.c: Enable asynchronous cancellation around lll_wait_tid
	call.  pthread_join is an official cancellation point.
	* pthread_timedjoin.c: Likewise.

	* pthread_cond_wait.c: Revert order in which internal lock are dropped
	and the condvar's mutex are retrieved.
	* pthread_cond_timedwait.c: Likewise.
	Reported by dice@saros.East.Sun.COM.

2002-10-07  Ulrich Drepper  <drepper@redhat.com>

	* pthreadP.h: Cut out all type definitions and move them...
	* sysdeps/unix/sysv/linux/internaltypes.h: ...here.  New file.
	* pthreadP.h: Include <internaltypes.h>.

	* sysdeps/unix/sysv/linux/i386/lowlevelsem.h (lll_sem_post): Little
	performance tweaks.

	* sem_trywait.c: Shuffle #includes around to get right order.
	* sem_timedwait.c: Likewise.
	* sem_post.c: Likewise.
	* sem_wait.c: Likewise.

	* nptl 0.3 released.

	* Makefile (tests): Add tst-signal3.
	* tst-signal3.c: New file.

2002-10-05  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/i386/lowlevelsem.h: Tell the compiler that
	the asms modify the sem object.
	(__lll_sem_timedwait): Now takes struct sem* as first parameter.

	* sysdeps/unix/sysv/linux/i386/bits/semaphore.h (sem_t): Don't expose
	the actual members.
	* pthreadP.h (struct sem): New type.  Actual semaphore type.
	* semaphoreP.h: Include pthreadP.h.
	* sem_getvalue.c: Adjust to sem_t change.
	* sem_init.c: Likewise.
	* sem_open.c: Likewise.
	* sem_post.c: Likewise.
	* sem_timedwait.c: Likewise.
	* sem_trywait.c: Likewise.
	* sem_wait.c: Likewise.

2002-10-04  Ulrich Drepper  <drepper@redhat.com>

	* Makefile (tests): Add tst-basic2, tst-exec1, tst-exec3, tst-exec3.
	* tst-basic2.c: New file.
	* tst-exec1.c: New file.
	* tst-exec2.c: New file.
	* tst-exec3.c: New file.

	* tst-fork1.c: Remove extra */.

	* nptl 0.2 released.  The API for IA-32 is complete.

1 files changed, 340 insertions, 0 deletions

diff --git a/nptl/sysdeps/i386/i686/bits/atomic.h b/nptl/sysdeps/i386/i686/bits/atomic.h
new file mode 100644
index 0000000000..7eb7573265
--- /dev/null
+++ b/nptl/sysdeps/i386/i686/bits/atomic.h
@@ -0,0 +1,340 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   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 <stdint.h>
+
+
+typedef int8_t atomic8_t;
+typedef uint8_t uatomic8_t;
+typedef int_fast8_t atomic_fast8_t;
+typedef uint_fast8_t uatomic_fast8_t;
+
+typedef int16_t atomic16_t;
+typedef uint16_t uatomic16_t;
+typedef int_fast16_t atomic_fast16_t;
+typedef uint_fast16_t uatomic_fast16_t;
+
+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;
+
+
+#ifndef LOCK
+# ifdef UP
+#  define LOCK	/* nothing */
+# else
+#  define LOCK "lock;"
+# endif
+#endif
+
+
+#define __arch_compare_and_exchange_8_acq(mem, newval, oldval) \
+  ({ unsigned char ret;							      \
+     __asm __volatile (LOCK "cmpxchgb %2, %1; setne %0"			      \
+		       : "=a" (ret), "=m" (*mem)			      \
+		       : "q" (newval), "1" (*mem), "0" (oldval));	      \
+     ret; })
+
+#define __arch_compare_and_exchange_16_acq(mem, newval, oldval) \
+  ({ unsigned char ret;							      \
+     __asm __volatile (LOCK "cmpxchgw %2, %1; setne %0"			      \
+		       : "=a" (ret), "=m" (*mem)			      \
+		       : "r" (newval), "1" (*mem), "0" (oldval));	      \
+     ret; })
+
+#define __arch_compare_and_exchange_32_acq(mem, newval, oldval) \
+  ({ unsigned char ret;							      \
+     __asm __volatile (LOCK "cmpxchgl %2, %1; setne %0"			      \
+		       : "=a" (ret), "=m" (*mem)			      \
+		       : "r" (newval), "1" (*mem), "0" (oldval));	      \
+     ret; })
+
+/* XXX We do not really need 64-bit compare-and-exchange.  At least
+   not in the moment.  Using it would mean causing portability
+   problems since not many other 32-bit architectures have support for
+   such an operation.  So don't define any code for now.  If it is
+   really going to be used the code below can be used.  */
+#if 1
+# define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \
+  (abort (), 0)
+#else
+# ifdef __PIC__
+#  define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \
+  ({ unsigned char ret;							      \
+     int ignore;							      \
+     __asm __volatile ("xchgl %3, %%ebx\n\t"				      \
+		       LOCK "cmpxchg8b %2, %1\n\t"			      \
+		       "setne %0\n\t"					      \
+		       "xchgl %3, %%ebx"				      \
+		       : "=a" (ret), "=m" (*mem), "=d" (ignore)		      \
+		       : "DS" (((unsigned long long int) (newval))	      \
+			       & 0xffffffff),				      \
+			 "c" (((unsigned long long int) (newval)) >> 32),     \
+			 "1" (*mem), "0" (((unsigned long long int) (oldval)) \
+					  & 0xffffffff),		      \
+			 "2" (((unsigned long long int) (oldval)) >> 32));    \
+     ret; })
+# else
+#  define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \
+  ({ unsigned char ret;							      \
+     int ignore;							      \
+     __asm __volatile (LOCK "cmpxchg8b %2, %1; setne %0"		      \
+		       : "=a" (ret), "=m" (*mem), "=d" (ignore)		      \
+		       : "b" (((unsigned long long int) (newval))	      \
+			      & 0xffffffff),				      \
+			  "c" (((unsigned long long int) (newval)) >> 32),    \
+			 "1" (*mem), "0" (((unsigned long long int) (oldval)) \
+					  & 0xffffffff),		      \
+			 "2" (((unsigned long long int) (oldval)) >> 32));    \
+     ret; })
+# endif
+#endif
+
+
+#define atomic_exchange_and_add(mem, value) \
+  ({ __typeof (*mem) result;						      \
+     if (sizeof (*mem) == 1)						      \
+       __asm __volatile (LOCK "xaddb %0, %1"				      \
+			 : "=r" (result), "=m" (*mem)			      \
+			 : "0" (value), "1" (*mem));			      \
+     else if (sizeof (*mem) == 2)					      \
+       __asm __volatile (LOCK "xaddw %0, %1"				      \
+			 : "=r" (result), "=m" (*mem)			      \
+			 : "0" (value), "1" (*mem));			      \
+     else if (sizeof (*mem) == 4)					      \
+       __asm __volatile (LOCK "xaddl %0, %1"				      \
+			 : "=r" (result), "=m" (*mem)			      \
+			 : "0" (value), "1" (*mem));			      \
+     else								      \
+       {								      \
+	 __typeof (value) addval = (value);				      \
+	 __typeof (*mem) oldval;					      \
+	 __typeof (mem) memp = (mem);					      \
+	 do								      \
+	   result = (oldval = *memp) + addval;				      \
+	 while (! __arch_compare_and_exchange_64_acq (memp, result, oldval)); \
+       }								      \
+     result; })
+
+
+#define atomic_add(mem, value) \
+  (void) ({ if (__builtin_constant_p (value) && (value) == 1)		      \
+	      atomic_increment (mem);					      \
+	    else if (__builtin_constant_p (value) && (value) == 1)	      \
+	      atomic_decrement (mem);					      \
+	    else if (sizeof (*mem) == 1)				      \
+	      __asm __volatile (LOCK "addb %1, %0"			      \
+				: "=m" (*mem)				      \
+				: "ir" (value), "0" (*mem));		      \
+	    else if (sizeof (*mem) == 2)				      \
+	      __asm __volatile (LOCK "addw %1, %0"			      \
+				: "=m" (*mem)				      \
+				: "ir" (value), "0" (*mem));		      \
+	    else if (sizeof (*mem) == 4)				      \
+	      __asm __volatile (LOCK "addl %1, %0"			      \
+				: "=m" (*mem)				      \
+				: "ir" (value), "0" (*mem));		      \
+	    else							      \
+	      {								      \
+		__typeof (value) addval = (value);			      \
+		__typeof (*mem) oldval;					      \
+		__typeof (mem) memp = (mem);				      \
+		do							      \
+		  oldval = *memp;					      \
+		while (! __arch_compare_and_exchange_64_acq (memp,	      \
+							     oldval + addval, \
+							     oldval));	      \
+	      }								      \
+	    })
+
+
+#define atomic_add_negative(mem, value) \
+  ({ unsigned char __result;						      \
+     if (sizeof (*mem) == 1)						      \
+       __asm __volatile (LOCK "addb %2, %0; sets %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "ir" (value), "0" (*mem));			      \
+     else if (sizeof (*mem) == 2)					      \
+       __asm __volatile (LOCK "addw %2, %0; sets %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "ir" (value), "0" (*mem));			      \
+     else if (sizeof (*mem) == 4)					      \
+       __asm __volatile (LOCK "addl %2, %0; sets %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "ir" (value), "0" (*mem));			      \
+     else								      \
+       abort ();							      \
+     __result; })
+
+
+#define atomic_add_zero(mem, value) \
+  ({ unsigned char __result;						      \
+     if (sizeof (*mem) == 1)						      \
+       __asm __volatile (LOCK "addb %2, %0; setz %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "ir" (value), "0" (*mem));			      \
+     else if (sizeof (*mem) == 2)					      \
+       __asm __volatile (LOCK "addw %2, %0; setz %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "ir" (value), "0" (*mem));			      \
+     else if (sizeof (*mem) == 4)					      \
+       __asm __volatile (LOCK "addl %2, %0; setz %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "ir" (value), "0" (*mem));			      \
+     else								      \
+       abort ();							      \
+     __result; })
+
+
+#define atomic_increment(mem) \
+  (void) ({ if (sizeof (*mem) == 1)					      \
+	      __asm __volatile (LOCK "incb %0"				      \
+				: "=m" (*mem)				      \
+				: "0" (*mem));				      \
+	    else if (sizeof (*mem) == 2)				      \
+	      __asm __volatile (LOCK "incw %0"				      \
+				: "=m" (*mem)				      \
+				: "0" (*mem));				      \
+	    else if (sizeof (*mem) == 4)				      \
+	      __asm __volatile (LOCK "incl %0"				      \
+				: "=m" (*mem)				      \
+				: "0" (*mem));				      \
+	    else							      \
+	      {								      \
+		__typeof (*mem) oldval;					      \
+		__typeof (mem) memp = (mem);				      \
+		do							      \
+		  oldval = *memp;					      \
+		while (! __arch_compare_and_exchange_64_acq (memp,	      \
+							     oldval + 1,      \
+							     oldval));	      \
+	      }								      \
+	    })
+
+
+#define atomic_increment_and_test(mem) \
+  ({ unsigned char __result;						      \
+     if (sizeof (*mem) == 1)						      \
+       __asm __volatile (LOCK "incb %0; sete %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "0" (*mem));					      \
+     else if (sizeof (*mem) == 2)					      \
+       __asm __volatile (LOCK "incw %0; sete %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "0" (*mem));					      \
+     else if (sizeof (*mem) == 4)					      \
+       __asm __volatile (LOCK "incl %0; sete %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "0" (*mem));					      \
+     else								      \
+       abort ();							      \
+     __result; })
+
+
+#define atomic_decrement(mem) \
+  (void) ({ if (sizeof (*mem) == 1)					      \
+	      __asm __volatile (LOCK "decb %0"				      \
+				: "=m" (*mem)				      \
+				: "0" (*mem));				      \
+	    else if (sizeof (*mem) == 2)				      \
+	      __asm __volatile (LOCK "decw %0"				      \
+				: "=m" (*mem)				      \
+				: "0" (*mem));				      \
+	    else if (sizeof (*mem) == 4)				      \
+	      __asm __volatile (LOCK "decl %0"				      \
+				: "=m" (*mem)				      \
+				: "0" (*mem));				      \
+	    else							      \
+	      {								      \
+		__typeof (*mem) oldval;					      \
+		__typeof (mem) memp = (mem);				      \
+		do							      \
+		  oldval = *memp;					      \
+		while (! __arch_compare_and_exchange_64_acq (memp,	      \
+							     oldval - 1,      \
+							     oldval));	      \
+	      }								      \
+	    })
+
+
+#define atomic_decrement_and_test(mem) \
+  ({ unsigned char __result;						      \
+     if (sizeof (*mem) == 1)						      \
+       __asm __volatile (LOCK "decb %0; sete %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "0" (*mem));					      \
+     else if (sizeof (*mem) == 2)					      \
+       __asm __volatile (LOCK "decw %0; sete %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "0" (*mem));					      \
+     else if (sizeof (*mem) == 4)					      \
+       __asm __volatile (LOCK "decl %0; sete %1"			      \
+			 : "=m" (*mem), "=qm" (__result)		      \
+			 : "0" (*mem));					      \
+     else								      \
+       abort ();							      \
+     __result; })
+
+
+#define atomic_bit_set(mem, bit) \
+  (void) ({ if (sizeof (*mem) == 1)					      \
+	      __asm __volatile (LOCK "orb %2, %0"			      \
+				: "=m" (*mem)				      \
+				: "0" (*mem), "i" (1 << (bit)));	      \
+	    else if (sizeof (*mem) == 2)				      \
+	      __asm __volatile (LOCK "orw %2, %0"			      \
+				: "=m" (*mem)				      \
+				: "0" (*mem), "i" (1 << (bit)));	      \
+	    else if (sizeof (*mem) == 4)				      \
+	      __asm __volatile (LOCK "orl %2, %0"			      \
+				: "=m" (*mem)				      \
+				: "0" (*mem), "i" (1 << (bit)));	      \
+	    else							      \
+	      abort ();							      \
+	    })
+
+
+#define atomic_bit_test_set(mem, bit) \
+  ({ unsigned char __result;						      \
+     if (sizeof (*mem) == 1)						      \
+       __asm __volatile (LOCK "btsb %3, %1; setc %0"			      \
+			 : "=q" (__result), "=m" (*mem)			      \
+			 : "1" (*mem), "i" (bit));			      \
+     else if (sizeof (*mem) == 2)					      \
+       __asm __volatile (LOCK "btsw %3, %1; setc %0"			      \
+			 : "=q" (__result), "=m" (*mem)			      \
+			 : "1" (*mem), "i" (bit));			      \
+     else if (sizeof (*mem) == 4)					      \
+       __asm __volatile (LOCK "btsl %3, %1; setc %0"			      \
+			 : "=q" (__result), "=m" (*mem)			      \
+			 : "1" (*mem), "i" (bit));			      \
+     else							      	      \
+       abort ();							      \
+     __result; })