From a9f5aa1cc96fc2c71f19a9c3e9dcbee0e78f83ca Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Tue, 15 Nov 2005 03:13:04 +0000
Subject: rename current stable linuxthreads to linuxthreads.old to prepare for
 import of latest glibc version

---
 .../linuxthreads.old/sysdeps/x86_64/pt-machine.h   | 86 ++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 libpthread/linuxthreads.old/sysdeps/x86_64/pt-machine.h

(limited to 'libpthread/linuxthreads.old/sysdeps/x86_64/pt-machine.h')

diff --git a/libpthread/linuxthreads.old/sysdeps/x86_64/pt-machine.h b/libpthread/linuxthreads.old/sysdeps/x86_64/pt-machine.h
new file mode 100644
index 000000000..8a2d1a762
--- /dev/null
+++ b/libpthread/linuxthreads.old/sysdeps/x86_64/pt-machine.h
@@ -0,0 +1,86 @@
+/* Machine-dependent pthreads configuration and inline functions.
+   x86-64 version.
+   Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 _PT_MACHINE_H
+#define _PT_MACHINE_H   1
+
+#ifndef __ASSEMBLER__
+# include <stddef.h>	/* For offsetof.  */
+# include <stdlib.h>	/* For abort().  */
+# include <asm/prctl.h>
+
+
+# ifndef PT_EI
+#  define PT_EI extern inline __attribute__ ((always_inline))
+# endif
+
+extern long int testandset (int *spinlock);
+extern int __compare_and_swap (long int *p, long int oldval, long int newval);
+
+/* Get some notion of the current stack.  Need not be exactly the top
+   of the stack, just something somewhere in the current frame.  */
+# define CURRENT_STACK_FRAME  stack_pointer
+register char * stack_pointer __asm__ ("%rsp") __attribute_used__;
+
+
+/* Spinlock implementation; required.  */
+PT_EI long int
+testandset (int *spinlock)
+{
+  long int ret;
+
+  __asm__ __volatile__ (
+	"xchgl %k0, %1"
+	: "=r"(ret), "=m"(*spinlock)
+	: "0"(1), "m"(*spinlock)
+	: "memory");
+
+  return ret;
+}
+
+
+/* Compare-and-swap for semaphores.  */
+# define HAS_COMPARE_AND_SWAP
+
+PT_EI int
+__compare_and_swap (long int *p, long int oldval, long int newval)
+{
+  char ret;
+  long int readval;
+
+  __asm__ __volatile__ ("lock; cmpxchgq %3, %1; sete %0"
+			: "=q" (ret), "=m" (*p), "=a" (readval)
+			: "r" (newval), "m" (*p), "a" (oldval)
+			: "memory");
+  return ret;
+}
+
+#endif /* !__ASSEMBLER__ */
+
+/* We want the OS to assign stack addresses.  */
+#define FLOATING_STACKS	1
+
+/* Maximum size of the stack if the rlimit is unlimited.  */
+#define ARCH_STACK_MAX_SIZE	32*1024*1024
+
+/* The ia32e really want some help to prevent overheating.  */
+#define BUSY_WAIT_NOP	__asm__ ("rep; nop")
+
+#endif /* pt-machine.h */
-- 
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