initial import of latest linuxthreads

1 files changed, 225 insertions, 0 deletions

diff --git a/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h b/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h
new file mode 100644
index 000000000..b30ab8518
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h
@@ -0,0 +1,225 @@
+/* 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;
+}
+
+/* Return the thread descriptor for the current thread.
+
+   The contained asm must *not* be marked volatile since otherwise
+   assignments like
+	pthread_descr self = thread_self();
+   do not get optimized away.  */
+# define THREAD_SELF \
+({									      \
+  register pthread_descr __self;					      \
+  __asm__ ("movq %%fs:%c1,%0" : "=r" (__self)				      \
+	   : "i" (offsetof (struct _pthread_descr_struct,		      \
+			    p_header.data.self)));			      \
+  __self;								      \
+})
+
+/* Prototype for the system call.  */
+extern int arch_prctl (int __code, unsigned long __addr);
+
+/* Initialize the thread-unique value.  */
+# define INIT_THREAD_SELF(descr, nr) \
+{									      \
+  if (arch_prctl (ARCH_SET_FS, (unsigned long)descr) != 0)		      \
+    abort ();								      \
+}
+
+/* Read member of the thread descriptor directly.  */
+# define THREAD_GETMEM(descr, member) \
+({									      \
+  __typeof__ (descr->member) __value;					      \
+  if (sizeof (__value) == 1)						      \
+    __asm__ __volatile__ ("movb %%fs:%P2,%b0"				      \
+			  : "=q" (__value)				      \
+			  : "0" (0),					      \
+			    "i" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
+  else if (sizeof (__value) == 4)					      \
+    __asm__ __volatile__ ("movl %%fs:%P2,%k0"				      \
+			  : "=r" (__value)				      \
+			  : "0" (0),					      \
+			    "i" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
+  else									      \
+    {									      \
+      if (sizeof (__value) != 8)					      \
+	/* There should not be any value with a size other than 1, 4 or 8.  */\
+	abort ();							      \
+									      \
+      __asm__ __volatile__ ("movq %%fs:%P1,%0"				      \
+			    : "=r" (__value)				      \
+			    : "i" (offsetof (struct _pthread_descr_struct,    \
+					     member)));			      \
+    }									      \
+  __value;								      \
+})
+
+/* Same as THREAD_GETMEM, but the member offset can be non-constant.  */
+# define THREAD_GETMEM_NC(descr, member) \
+({									      \
+  __typeof__ (descr->member) __value;					      \
+  if (sizeof (__value) == 1)						      \
+    __asm__ __volatile__ ("movb %%fs:(%2),%b0"				      \
+			  : "=q" (__value)				      \
+			  : "0" (0),					      \
+			    "r" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
+  else if (sizeof (__value) == 4)					      \
+    __asm__ __volatile__ ("movl %%fs:(%2),%k0"				      \
+			  : "=r" (__value)				      \
+			  : "0" (0),					      \
+			    "r" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
+  else									      \
+    {									      \
+      if (sizeof (__value) != 8)					      \
+	/* There should not be any value with a size other than 1, 4 or 8.  */\
+	abort ();							      \
+									      \
+      __asm__ __volatile__ ("movq %%fs:(%1),%0"				      \
+			    : "=r" (__value)				      \
+			    : "r" (offsetof (struct _pthread_descr_struct,    \
+					     member)));			      \
+    }									      \
+  __value;								      \
+})
+
+/* Set member of the thread descriptor directly.  */
+# define THREAD_SETMEM(descr, member, value) \
+({									      \
+  __typeof__ (descr->member) __value = (value);				      \
+  if (sizeof (__value) == 1)						      \
+    __asm__ __volatile__ ("movb %0,%%fs:%P1" :				      \
+			  : "q" (__value),				      \
+			    "i" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
+  else if (sizeof (__value) == 4)					      \
+    __asm__ __volatile__ ("movl %k0,%%fs:%P1" :				      \
+			  : "r" (__value),				      \
+			    "i" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
+  else									      \
+    {									      \
+      if (sizeof (__value) != 8)					      \
+	/* There should not be any value with a size other than 1, 4 or 8.  */\
+	abort ();							      \
+									      \
+      __asm__ __volatile__ ("movq %0,%%fs:%P1" :			      \
+			    : "r" (__value),				      \
+			      "i" (offsetof (struct _pthread_descr_struct,    \
+					     member)));			      \
+    }									      \
+})
+
+/* Same as THREAD_SETMEM, but the member offset can be non-constant.  */
+# define THREAD_SETMEM_NC(descr, member, value) \
+({									      \
+  __typeof__ (descr->member) __value = (value);				      \
+  if (sizeof (__value) == 1)						      \
+    __asm__ __volatile__ ("movb %0,%%fs:(%1)" :				      \
+			  : "q" (__value),				      \
+			    "r" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
+  else if (sizeof (__value) == 4)					      \
+    __asm__ __volatile__ ("movl %k0,%%fs:(%1)" :			      \
+			  : "r" (__value),				      \
+			    "r" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
+  else									      \
+    {									      \
+      if (sizeof (__value) != 8)					      \
+	/* There should not be any value with a size other than 1, 4 or 8.  */\
+	abort ();							      \
+									      \
+      __asm__ __volatile__ ("movq %0,%%fs:(%1)"	:			      \
+			    : "r" (__value),				      \
+			      "r" (offsetof (struct _pthread_descr_struct,    \
+					     member)));			      \
+    }									      \
+})
+
+#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 */