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, 257 insertions, 0 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
new file mode 100644
index 0000000000..71babd5c93
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
@@ -0,0 +1,257 @@
+/* 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.  */
+
+#ifndef _LOWLEVELLOCK_H
+#define _LOWLEVELLOCK_H	1
+
+#include <time.h>
+#include <bits/pthreadtypes.h>
+
+#ifndef LOCK_INSTR
+# ifdef UP
+#  define LOCK_INSTR	/* nothing */
+# else
+#  define LOCK_INSTR "lock;"
+# endif
+#endif
+
+#define SYS_futex		240
+#define FUTEX_WAIT		0
+#define FUTEX_WAKE		1
+
+
+/* Initializer for compatibility lock.  */
+#define LLL_MUTEX_LOCK_INITIALIZER (0)
+
+
+/* Does not preserve %eax and %ecx.  */
+extern int __lll_mutex_lock_wait (int val, int *__futex)
+     __attribute ((regparm (2))) attribute_hidden;
+/* Does not preserver %eax, %ecx, and %edx.  */
+extern int __lll_mutex_timedlock_wait (int val, int *__futex,
+				 const struct timespec *abstime)
+     __attribute ((regparm (3))) attribute_hidden;
+/* Preserves all registers but %eax.  */
+extern int __lll_mutex_unlock_wait (int *__futex)
+     __attribute ((regparm (1))) attribute_hidden;
+
+
+#define lll_mutex_trylock(futex) \
+  ({ unsigned char ret;							      \
+     __asm __volatile (LOCK_INSTR "cmpxchgl %2, %1; setne %0"		      \
+		       : "=a" (ret), "=m" (futex)			      \
+		       : "r" (1), "1" (futex), "0" (0));		      \
+     ret; })
+
+
+#define lll_mutex_lock(futex) \
+  (void) ({ int ignore1, ignore2;					      \
+	    __asm (LOCK_INSTR "xaddl %0, %2\n\t"			      \
+		   "testl %0, %0\n\t"					      \
+		   "jne 1f\n\t"						      \
+		   ".subsection 1\n"					      \
+		   "1:\tleal %2, %%ecx\n\t"				      \
+		   "call __lll_mutex_lock_wait\n\t"			      \
+		   "jmp 2f\n\t"						      \
+		   ".previous\n"					      \
+		   "2:"							      \
+		   : "=a" (ignore1), "=&c" (ignore2), "=m" (futex)	      \
+		   : "0" (1), "2" (futex)); })
+
+
+#define lll_mutex_timedlock(futex, timeout) \
+  ({ int result, ignore1, ignore2;					      \
+     __asm (LOCK_INSTR "xaddl %0, %3\n\t"				      \
+	    "testl %0, %0\n\t"						      \
+	    "jne 1f\n\t"						      \
+	    ".subsection 1\n"						      \
+	    "1:\tleal %3, %%ecx\n\t"					      \
+	    "movl %6, %%edx\n\t"					      \
+	    "call __lll_mutex_timedlock_wait\n\t"			      \
+	    "jmp 2f\n\t"						      \
+	    ".previous\n"						      \
+	    "2:"							      \
+	    : "=a" (result), "=&c" (ignore1), "=&d" (ignore2), "=m" (futex)   \
+	    : "0" (1), "3" (futex), "m" (timeout));			      \
+     result; })
+
+
+#define lll_mutex_unlock(futex) \
+  (void) ({ int ignore;							      \
+            __asm (LOCK_INSTR "decl %0\n\t"				      \
+		   "jne 1f\n\t"						      \
+		   ".subsection 1\n"					      \
+		   "1:\tleal %0, %%eax\n\t"				      \
+		   "call __lll_mutex_unlock_wake\n\t"			      \
+		   "jmp 2f\n\t"						      \
+		   ".previous\n"					      \
+		   "2:"							      \
+		   : "=m" (futex), "=&a" (ignore)			      \
+		   : "0" (futex)); })
+
+
+#define lll_mutex_islocked(futex) \
+  (futex != 0)
+
+
+/* We have a separate internal lock implementation which is not tied
+   to binary compatibility.  */
+
+/* Type for lock object.  */
+typedef int lll_lock_t;
+
+/* Initializers for lock.  */
+#define LLL_LOCK_INITIALIZER		(1)
+#define LLL_LOCK_INITIALIZER_LOCKED	(0)
+
+
+extern int __lll_lock_wait (int val, int *__futex)
+     __attribute ((regparm (2))) attribute_hidden;
+extern int __lll_unlock_wake (int *__futex)
+     __attribute ((regparm (1))) attribute_hidden;
+extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
+
+
+/* The states of a lock are:
+    1  -  untaken
+    0  -  taken by one user
+   <0  -  taken by more users */
+
+
+#define lll_trylock(futex) \
+  ({ unsigned char ret;							      \
+     __asm __volatile (LOCK_INSTR "cmpxchgl %2, %1; setne %0"		      \
+		       : "=a" (ret), "=m" (futex)			      \
+		       : "r" (0), "1" (futex), "0" (1));		      \
+     ret; })
+
+
+#define lll_lock(futex) \
+  (void) ({ int ignore1, ignore2;					      \
+	    __asm (LOCK_INSTR "xaddl %0, %2\n\t"			      \
+		   "jne 1f\n\t"						      \
+		   ".subsection 1\n"					      \
+		   "1:\tleal %2, %%ecx\n\t"				      \
+		   "call __lll_lock_wait\n\t"				      \
+		   "jmp 2f\n\t"						      \
+		   ".previous\n"					      \
+		   "2:"							      \
+		   : "=a" (ignore1), "=&c" (ignore2), "=m" (futex)	      \
+		   : "0" (-1), "2" (futex)); })
+
+
+#define lll_unlock(futex) \
+  (void) ({ int ignore;							      \
+            __asm (LOCK_INSTR "incl %0\n\t"				      \
+		   "jng 1f\n\t"						      \
+		   ".subsection 1\n"					      \
+		   "1:\tleal %0, %%eax\n\t"				      \
+		   "call __lll_unlock_wake\n\t"				      \
+		   "jmp 2f\n\t"						      \
+		   ".previous\n"					      \
+		   "2:"							      \
+		   : "=m" (futex), "=&a" (ignore)			      \
+		   : "0" (futex)); })
+
+
+#define lll_islocked(futex) \
+  (futex != 0)
+
+
+/* The kernel notifies a process with uses CLONE_CLEARTID via futex
+   wakeup when the clone terminates.  The memory location contains the
+   thread ID while the clone is running and is reset to zero
+   afterwards.
+
+   The macro parameter must not have any side effect.  */
+#ifdef PIC
+# define LLL_TID_EBX_LOAD	"xchgl %2, %%ebx\n"
+# define LLL_TID_EBX_REG	"D"
+#else
+# define LLL_TID_EBX_LOAD
+# define LLL_TID_EBX_REG	"b"
+#endif
+#define lll_wait_tid(tid) \
+  do {									      \
+    int __ignore;							      \
+    register __typeof (tid) _tid asm ("edx") = (tid);			      \
+    if (_tid != 0)							      \
+      __asm __volatile (LLL_TID_EBX_LOAD				      \
+			"1:\tmovl %1, %%eax\n\t"			      \
+			"int $0x80\n\t"					      \
+			"cmpl $0, (%%ebx)\n\t"				      \
+			"jne,pn 1b\n\t"					      \
+			LLL_TID_EBX_LOAD				      \
+			: "=&a" (__ignore)				      \
+			: "i" (SYS_futex), LLL_TID_EBX_REG (&tid), "S" (0),   \
+			  "c" (FUTEX_WAIT), "d" (_tid));		      \
+  } while (0)
+
+extern int __lll_timedwait_tid (int *tid, const struct timespec *abstime)
+     __attribute__ ((regparm (2))) attribute_hidden;
+#define lll_timedwait_tid(tid, abstime) \
+  ({									      \
+    int __result = 0;							      \
+    if (tid != 0)							      \
+      {									      \
+	if (abstime == NULL || abstime->tv_nsec >= 1000000000)		      \
+	  __result = EINVAL;						      \
+	else								      \
+	  __result = __lll_timedwait_tid (&tid, abstime);		      \
+      }									      \
+    __result; })
+
+
+#define lll_wake_tid(tid) \
+  do {									      \
+    int __ignore;							      \
+    (tid) = 0;								      \
+    __asm __volatile (LLL_TID_EBX_LOAD					      \
+		      "\tint $0x80\n\t"					      \
+		      LLL_TID_EBX_LOAD					      \
+		      : "=a" (__ignore)					      \
+		      : "0" (SYS_futex), LLL_TID_EBX_REG (&(tid)), "S" (0),   \
+			"c" (FUTEX_WAKE), "d" (0x7fffffff));		      \
+  } while (0)
+
+
+/* Conditional variable handling.  */
+
+extern void __lll_cond_wait (pthread_cond_t *cond)
+     __attribute ((regparm (1))) attribute_hidden;
+extern int __lll_cond_timedwait (pthread_cond_t *cond,
+				 const struct timespec *abstime)
+     __attribute ((regparm (2))) attribute_hidden;
+extern void __lll_cond_wake (pthread_cond_t *cond)
+     __attribute ((regparm (1))) attribute_hidden;
+extern void __lll_cond_broadcast (pthread_cond_t *cond)
+     __attribute ((regparm (1))) attribute_hidden;
+
+
+#define lll_cond_wait(cond) \
+  __lll_cond_wait (cond)
+#define lll_cond_timedwait(cond, abstime) \
+  __lll_cond_timedwait (cond, abstime)
+#define lll_cond_wake(cond) \
+  __lll_cond_wake (cond)
+#define lll_cond_broadcast(cond) \
+  __lll_cond_broadcast (cond)
+
+
+#endif	/* lowlevellock.h */