Updated to fedora-glibc-20060217T1609

4 files changed, 343 insertions, 1 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S
new file mode 100644
index 0000000000..1c516c7424
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S
@@ -0,0 +1,186 @@
+/* Copyright (C) 2002, 2003, 2004, 2006 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 <sysdep.h>
+#include <pthread-errnos.h>
+#include <lowlevelrobustlock.h>
+
+	.text
+
+#ifndef LOCK
+# ifdef UP
+#  define LOCK
+# else
+#  define LOCK lock
+# endif
+#endif
+
+#define SYS_gettimeofday	__NR_gettimeofday
+#define SYS_futex		240
+#define FUTEX_WAIT		0
+#define FUTEX_WAKE		1
+#define FUTEX_WAITERS		0x80000000
+#define FUTEX_OWNER_DIED	0x40000000
+
+
+	.globl	__lll_robust_mutex_lock_wait
+	.type	__lll_robust_mutex_lock_wait,@function
+	.hidden	__lll_robust_mutex_lock_wait
+	.align	16
+__lll_robust_mutex_lock_wait:
+	pushl	%edx
+	pushl	%ebx
+	pushl	%esi
+
+	movl	%ecx, %ebx
+	xorl	%esi, %esi	/* No timeout.  */
+	xorl	%ecx, %ecx	/* movl $FUTEX_WAIT, %ecx */
+
+4:	movl	%eax, %edx
+	orl	$FUTEX_WAITERS, %edx
+
+	testl	$FUTEX_OWNER_DIED, %eax
+	jnz	3f
+
+	cmpl	%edx, %eax	/* NB:	 %edx == 2 */
+	je	1f
+
+	LOCK
+	cmpxchgl %edx, (%ebx)
+	jnz	2f
+
+1:	movl	$SYS_futex, %eax
+	ENTER_KERNEL
+
+	movl	(%ebx), %eax
+
+2:	test	%eax, %eax
+	jne	4b
+
+	movl	%gs:TID, %edx
+	LOCK
+	cmpxchgl %edx, (%ebx)
+	jnz	4b
+	/* NB:	 %eax == 0 */
+
+3:	popl	%esi
+	popl	%ebx
+	popl	%edx
+	ret
+	.size	__lll_robust_mutex_lock_wait,.-__lll_robust_mutex_lock_wait
+
+
+	.globl	__lll_robust_mutex_timedlock_wait
+	.type	__lll_robust_mutex_timedlock_wait,@function
+	.hidden	__lll_robust_mutex_timedlock_wait
+	.align	16
+__lll_robust_mutex_timedlock_wait:
+	/* Check for a valid timeout value.  */
+	cmpl	$1000000000, 4(%edx)
+	jae	3f
+
+	pushl	%edi
+	pushl	%esi
+	pushl	%ebx
+	pushl	%ebp
+
+	/* Stack frame for the timespec and timeval structs.  */
+	subl	$12, %esp
+
+	movl	%ecx, %ebp
+	movl	%edx, %edi
+
+1:	movl	%eax, 8(%esp)
+
+	/* Get current time.  */
+	movl	%esp, %ebx
+	xorl	%ecx, %ecx
+	movl	$SYS_gettimeofday, %eax
+	ENTER_KERNEL
+
+	/* Compute relative timeout.  */
+	movl	4(%esp), %eax
+	movl	$1000, %edx
+	mul	%edx		/* Milli seconds to nano seconds.  */
+	movl	(%edi), %ecx
+	movl	4(%edi), %edx
+	subl	(%esp), %ecx
+	subl	%eax, %edx
+	jns	4f
+	addl	$1000000000, %edx
+	subl	$1, %ecx
+4:	testl	%ecx, %ecx
+	js	8f		/* Time is already up.  */
+
+	/* Store relative timeout.  */
+	movl	%ecx, (%esp)
+	movl	%edx, 4(%esp)
+
+	movl	%ebp, %ebx
+
+	movl	8(%esp), %edx
+	movl	%edx, %eax
+	orl	$FUTEX_WAITERS, %edx
+
+	testl	$FUTEX_OWNER_DIED, %eax
+	jnz	6f
+
+	cmpl	%eax, %edx
+	je	2f
+
+	LOCK
+	cmpxchgl %edx, (%ebx)
+	movl	$0, %ecx	/* Must use mov to avoid changing cc.  */
+	jnz	5f
+
+2:
+	/* Futex call.  */
+	movl	%esp, %esi
+	xorl	%ecx, %ecx	/* movl $FUTEX_WAIT, %ecx */
+	movl	$SYS_futex, %eax
+	ENTER_KERNEL
+	movl	%eax, %ecx
+
+	movl	(%ebx), %eax
+
+5:	testl	%eax, %eax
+	jne	7f
+
+	movl	%gs:TID, %edx
+	LOCK
+	cmpxchgl %edx, (%ebx)
+	jnz	7f
+
+6:	addl	$12, %esp
+	popl	%ebp
+	popl	%ebx
+	popl	%esi
+	popl	%edi
+	ret
+
+	/* Check whether the time expired.  */
+7:	cmpl	$-ETIMEDOUT, %ecx
+	jne	1b
+
+8:	movl	$ETIMEDOUT, %eax
+	jmp	6b
+
+3:	movl	$EINVAL, %eax
+	ret
+	.size	__lll_robust_mutex_timedlock_wait,.-__lll_robust_mutex_timedlock_wait
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i586/lowlevelrobustlock.S b/nptl/sysdeps/unix/sysv/linux/i386/i586/lowlevelrobustlock.S
new file mode 100644
index 0000000000..f768e16a7d
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i586/lowlevelrobustlock.S
@@ -0,0 +1,20 @@
+/* Copyright (C) 2002, 2006 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 "../i486/lowlevelrobustlock.S"
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i686/lowlevelrobustlock.S b/nptl/sysdeps/unix/sysv/linux/i386/i686/lowlevelrobustlock.S
new file mode 100644
index 0000000000..f768e16a7d
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i686/lowlevelrobustlock.S
@@ -0,0 +1,20 @@
+/* Copyright (C) 2002, 2006 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 "../i486/lowlevelrobustlock.S"
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
index b233d9747f..afdba009a0 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
@@ -139,6 +139,16 @@ extern int __lll_mutex_unlock_wake (int *__futex)
      ret; })
 
 
+#define lll_robust_mutex_trylock(futex, id) \
+  ({ int ret;								      \
+     __asm __volatile (LOCK_INSTR "cmpxchgl %2, %1"			      \
+		       : "=a" (ret), "=m" (futex)			      \
+		       : "r" (id), "m" (futex),				      \
+			 "0" (LLL_MUTEX_LOCK_INITIALIZER)		      \
+		       : "memory");					      \
+     ret; })
+
+
 #define lll_mutex_cond_trylock(futex) \
   ({ int ret;								      \
      __asm __volatile (LOCK_INSTR "cmpxchgl %2, %1"			      \
@@ -167,6 +177,25 @@ extern int __lll_mutex_unlock_wake (int *__futex)
 			      : "memory"); })
 
 
+#define lll_robust_mutex_lock(futex, id) \
+  ({ int result, ignore;						      \
+     __asm __volatile (LOCK_INSTR "cmpxchgl %1, %2\n\t"			      \
+		       "jnz _L_mutex_lock_%=\n\t"			      \
+		       ".subsection 1\n\t"				      \
+		       ".type _L_mutex_lock_%=,@function\n"		      \
+		       "_L_mutex_lock_%=:\n\t"				      \
+		       "leal %2, %%ecx\n\t"				      \
+		       "call __lll_robust_mutex_lock_wait\n\t"		      \
+		       "jmp 1f\n\t"					      \
+		       ".size _L_mutex_lock_%=,.-_L_mutex_lock_%=\n"	      \
+		       ".previous\n"					      \
+		       "1:"						      \
+		       : "=a" (result), "=c" (ignore), "=m" (futex)	      \
+		       : "0" (0), "1" (id), "m" (futex)			      \
+		       : "memory");					      \
+     result; })
+
+
 /* Special version of lll_mutex_lock which causes the unlock function to
    always wakeup waiters.  */
 #define lll_mutex_cond_lock(futex) \
@@ -187,6 +216,25 @@ extern int __lll_mutex_unlock_wake (int *__futex)
 			      : "memory"); })
 
 
+#define lll_robust_mutex_cond_lock(futex, id) \
+  ({ int result, ignore;						      \
+     __asm __volatile (LOCK_INSTR "cmpxchgl %1, %2\n\t"			      \
+		       "jnz _L_mutex_cond_lock_%=\n\t"			      \
+		       ".subsection 1\n\t"				      \
+		       ".type _L_mutex_cond_lock_%=,@function\n"	      \
+		       "_L_mutex_cond_lock_%=:\n\t"			      \
+		       "leal %2, %%ecx\n\t"				      \
+		       "call __lll_robust_mutex_lock_wait\n\t"		      \
+		       "jmp 1f\n\t"					      \
+		       ".size _L_mutex_cond_lock_%=,.-_L_mutex_cond_lock_%=\n"\
+		       ".previous\n"					      \
+		       "1:"						      \
+		       : "=a" (result), "=c" (ignore), "=m" (futex)	      \
+		       : "0" (0), "1" (id | FUTEX_WAITERS), "m" (futex)	      \
+		       : "memory");					      \
+     result; })
+
+
 #define lll_mutex_timedlock(futex, timeout) \
   ({ int result, ignore1, ignore2;					      \
      __asm __volatile (LOCK_INSTR "cmpxchgl %1, %3\n\t"			      \
@@ -208,9 +256,30 @@ extern int __lll_mutex_unlock_wake (int *__futex)
      result; })
 
 
+#define lll_robust_mutex_timedlock(futex, timeout, id) \
+  ({ int result, ignore1, ignore2;					      \
+     __asm __volatile (LOCK_INSTR "cmpxchgl %1, %3\n\t"			      \
+		       "jnz _L_mutex_timedlock_%=\n\t"			      \
+		       ".subsection 1\n\t"				      \
+		       ".type _L_mutex_timedlock_%=,@function\n"	      \
+		       "_L_mutex_timedlock_%=:\n\t"			      \
+		       "leal %3, %%ecx\n\t"				      \
+		       "movl %7, %%edx\n\t"				      \
+		       "call __lll_robust_mutex_timedlock_wait\n\t"	      \
+		       "jmp 1f\n\t"					      \
+		       ".size _L_mutex_timedlock_%=,.-_L_mutex_timedlock_%=\n"\
+		       ".previous\n"					      \
+		       "1:"						      \
+		       : "=a" (result), "=c" (ignore1), "=&d" (ignore2),      \
+			 "=m" (futex)					      \
+		       : "0" (0), "1" (id), "m" (futex), "m" (timeout)	      \
+		       : "memory");					      \
+     result; })
+
+
 #define lll_mutex_unlock(futex) \
   (void) ({ int ignore;							      \
-            __asm __volatile (LOCK_INSTR "subl $1,%0\n\t"		      \
+            __asm __volatile (LOCK_INSTR "subl $1, %0\n\t"		      \
 			      "jne _L_mutex_unlock_%=\n\t"		      \
 			      ".subsection 1\n\t"			      \
 			      ".type _L_mutex_unlock_%=,@function\n"	      \
@@ -226,6 +295,53 @@ extern int __lll_mutex_unlock_wake (int *__futex)
 			      : "memory"); })
 
 
+#define lll_robust_mutex_unlock(futex) \
+  (void) ({ int ignore;							      \
+            __asm __volatile (LOCK_INSTR "andl %2, %0\n\t"		      \
+			      "jne _L_mutex_unlock_%=\n\t"		      \
+			      ".subsection 1\n\t"			      \
+			      ".type _L_mutex_unlock_%=,@function\n"	      \
+			      "_L_mutex_unlock_%=:\n\t"			      \
+			      "leal %0, %%eax\n\t"			      \
+			      "call __lll_mutex_unlock_wake\n\t"	      \
+			      "jmp 1f\n\t"				      \
+			      ".size _L_mutex_unlock_%=,.-_L_mutex_unlock_%=\n" \
+			      ".previous\n"				      \
+			      "1:"					      \
+			      : "=m" (futex), "=&a" (ignore)		      \
+			      : "i" (FUTEX_WAITERS), "m" (futex)	      \
+			      : "memory"); })
+
+
+#define lll_robust_mutex_dead(futex) \
+  (void) ({ int __ignore;						      \
+	    register int _nr asm ("edx") = 1;				      \
+	    __asm __volatile (LOCK_INSTR "orl %5, (%2)\n\t"		      \
+			      LLL_EBX_LOAD				      \
+			      LLL_ENTER_KERNEL				      \
+			      LLL_EBX_LOAD				      \
+			      : "=a" (__ignore)				      \
+			      : "0" (SYS_futex), LLL_EBX_REG (&(futex)),      \
+				"c" (FUTEX_WAKE), "d" (_nr),		      \
+				"i" (FUTEX_OWNER_DIED),			      \
+				"i" (offsetof (tcbhead_t, sysinfo))); })
+
+
+#define lll_futex_wake(futex, nr) \
+  do {									      \
+    int __ignore;							      \
+    register __typeof (nr) _nr asm ("edx") = (nr);			      \
+    __asm __volatile (LLL_EBX_LOAD					      \
+		      LLL_ENTER_KERNEL					      \
+		      LLL_EBX_LOAD					      \
+		      : "=a" (__ignore)					      \
+		      : "0" (SYS_futex), LLL_EBX_REG (futex),		      \
+			"c" (FUTEX_WAKE), "d" (_nr),			      \
+			"i" (0) /* phony, to align next arg's number */,      \
+			"i" (offsetof (tcbhead_t, sysinfo)));		      \
+  } while (0)
+
+
 #define lll_mutex_islocked(futex) \
   (futex != 0)