Back out nptl changes, which for now will be done in branches/uClibc-nptl

1 files changed, 0 insertions, 419 deletions

diff --git a/libpthread/nptl/sysdeps/i386/tls.h b/libpthread/nptl/sysdeps/i386/tls.h
deleted file mode 100644
index 06def42a5..000000000
--- a/libpthread/nptl/sysdeps/i386/tls.h
+++ /dev/null
@@ -1,419 +0,0 @@
-/* Definition for thread-local data handling.  nptl/i386 version.
-   Copyright (C) 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 _TLS_H
-#define _TLS_H	1
-
-#include <dl-sysdep.h>
-#ifndef __ASSEMBLER__
-# include <stdbool.h>
-# include <stddef.h>
-# include <stdint.h>
-# include <stdlib.h>
-# include <list.h>
-
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
-
-
-typedef struct
-{
-  void *tcb;		/* Pointer to the TCB.  Not necessarily the
-			   thread descriptor used by libpthread.  */
-  dtv_t *dtv;
-  void *self;		/* Pointer to the thread descriptor.  */
-  int multiple_threads;
-  uintptr_t sysinfo;
-} tcbhead_t;
-
-# define TLS_MULTIPLE_THREADS_IN_TCB 1
-
-#else /* __ASSEMBLER__ */
-# include <tcb-offsets.h>
-#endif
-
-
-/* We require TLS support in the tools.  */
-#ifndef HAVE_TLS_SUPPORT
-# error "TLS support is required."
-#endif
-
-/* Signal that TLS support is available.  */
-#define USE_TLS	1
-
-/* Alignment requirement for the stack.  For IA-32 this is governed by
-   the SSE memory functions.  */
-#define STACK_ALIGN	16
-
-#ifndef __ASSEMBLER__
-/* Get system call information.  */
-# include <sysdep.h>
-
-/* The old way: using LDT.  */
-
-/* Structure passed to `modify_ldt', 'set_thread_area', and 'clone' calls.  */
-struct user_desc
-{
-  unsigned int entry_number;
-  unsigned long int base_addr;
-  unsigned int limit;
-  unsigned int seg_32bit:1;
-  unsigned int contents:2;
-  unsigned int read_exec_only:1;
-  unsigned int limit_in_pages:1;
-  unsigned int seg_not_present:1;
-  unsigned int useable:1;
-  unsigned int empty:25;
-};
-
-/* Initializing bit fields is slow.  We speed it up by using a union.  */
-union user_desc_init
-{
-  struct user_desc desc;
-  unsigned int vals[4];
-};
-
-
-/* Get the thread descriptor definition.  */
-# include <nptl/descr.h>
-
-/* This is the size of the initial TCB.  */
-# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
-
-/* Alignment requirements for the initial TCB.  */
-# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
-
-/* This is the size of the TCB.  */
-# define TLS_TCB_SIZE sizeof (struct pthread)
-
-/* Alignment requirements for the TCB.  */
-# define TLS_TCB_ALIGN __alignof__ (struct pthread)
-
-/* The TCB can have any size and the memory following the address the
-   thread pointer points to is unspecified.  Allocate the TCB there.  */
-# define TLS_TCB_AT_TP	1
-
-
-/* Install the dtv pointer.  The pointer passed is to the element with
-   index -1 which contain the length.  */
-# define INSTALL_DTV(descr, dtvp) \
-  ((tcbhead_t *) (descr))->dtv = (dtvp) + 1
-
-/* Install new dtv for current thread.  */
-# define INSTALL_NEW_DTV(dtvp) \
-  ({ struct pthread *__pd;						      \
-     THREAD_SETMEM (__pd, header.dtv, (dtvp)); })
-
-/* Return dtv of given thread descriptor.  */
-# define GET_DTV(descr) \
-  (((tcbhead_t *) (descr))->dtv)
-
-#define THREAD_SELF_SYSINFO	THREAD_GETMEM (THREAD_SELF, header.sysinfo)
-#define THREAD_SYSINFO(pd)	((pd)->header.sysinfo)
-
-/* Macros to load from and store into segment registers.  */
-# ifndef TLS_GET_GS
-#  define TLS_GET_GS() \
-  ({ int __seg; __asm ("movw %%gs, %w0" : "=q" (__seg)); __seg & 0xffff; })
-# endif
-# ifndef TLS_SET_GS
-#  define TLS_SET_GS(val) \
-  __asm ("movw %w0, %%gs" :: "q" (val))
-# endif
-
-
-# ifndef __NR_set_thread_area
-#  define __NR_set_thread_area 243
-# endif
-# ifndef TLS_FLAG_WRITABLE
-#  define TLS_FLAG_WRITABLE		0x00000001
-# endif
-
-// XXX Enable for the real world.
-#if 0
-# ifndef __ASSUME_SET_THREAD_AREA
-#  error "we need set_thread_area"
-# endif
-#endif
-
-# ifdef __PIC__
-#  define TLS_EBX_ARG "r"
-#  define TLS_LOAD_EBX "xchgl %3, %%ebx\n\t"
-# else
-#  define TLS_EBX_ARG "b"
-#  define TLS_LOAD_EBX
-# endif
-
-#if defined NEED_DL_SYSINFO
-# define INIT_SYSINFO \
-  _head->sysinfo = GLRO(dl_sysinfo)
-#else
-# define INIT_SYSINFO
-#endif
-
-#ifndef LOCK_PREFIX
-# ifdef UP
-#  define LOCK_PREFIX  /* nothing */
-# else
-#  define LOCK_PREFIX "lock;"
-# endif
-#endif
-
-/* Code to initially initialize the thread pointer.  This might need
-   special attention since 'errno' is not yet available and if the
-   operation can cause a failure 'errno' must not be touched.  */
-# define TLS_INIT_TP(thrdescr, secondcall) \
-  ({ void *_thrdescr = (thrdescr);					      \
-     tcbhead_t *_head = _thrdescr;					      \
-     union user_desc_init _segdescr;					      \
-     int _result;							      \
-									      \
-     _head->tcb = _thrdescr;						      \
-     /* For now the thread descriptor is at the same address.  */	      \
-     _head->self = _thrdescr;						      \
-     /* New syscall handling support.  */				      \
-     INIT_SYSINFO;							      \
-									      \
-     /* The 'entry_number' field.  Let the kernel pick a value.  */	      \
-     if (secondcall)							      \
-       _segdescr.vals[0] = TLS_GET_GS () >> 3;				      \
-     else								      \
-       _segdescr.vals[0] = -1;						      \
-     /* The 'base_addr' field.  Pointer to the TCB.  */			      \
-     _segdescr.vals[1] = (unsigned long int) _thrdescr;			      \
-     /* The 'limit' field.  We use 4GB which is 0xfffff pages.  */	      \
-     _segdescr.vals[2] = 0xfffff;					      \
-     /* Collapsed value of the bitfield:				      \
-	  .seg_32bit = 1						      \
-	  .contents = 0							      \
-	  .read_exec_only = 0						      \
-	  .limit_in_pages = 1						      \
-	  .seg_not_present = 0						      \
-	  .useable = 1 */						      \
-     _segdescr.vals[3] = 0x51;						      \
-									      \
-     /* Install the TLS.  */						      \
-     asm volatile (TLS_LOAD_EBX						      \
-		   "int $0x80\n\t"					      \
-		   TLS_LOAD_EBX						      \
-		   : "=a" (_result), "=m" (_segdescr.desc.entry_number)	      \
-		   : "0" (__NR_set_thread_area),			      \
-		     TLS_EBX_ARG (&_segdescr.desc), "m" (_segdescr.desc));    \
-									      \
-     if (_result == 0)							      \
-       /* We know the index in the GDT, now load the segment register.	      \
-	  The use of the GDT is described by the value 3 in the lower	      \
-	  three bits of the segment descriptor value.			      \
-									      \
-	  Note that we have to do this even if the numeric value of	      \
-	  the descriptor does not change.  Loading the segment register	      \
-	  causes the segment information from the GDT to be loaded	      \
-	  which is necessary since we have changed it.   */		      \
-       TLS_SET_GS (_segdescr.desc.entry_number * 8 + 3);		      \
-									      \
-     _result == 0 ? NULL						      \
-     : "set_thread_area failed when setting up thread-local storage\n"; })
-
-
-/* Return the address of the dtv for the current thread.  */
-# define THREAD_DTV() \
-  ({ struct pthread *__pd;						      \
-     THREAD_GETMEM (__pd, header.dtv); })
-
-
-/* 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 \
-  ({ struct pthread *__self;						      \
-     asm ("movl %%gs:%c1,%0" : "=r" (__self)				      \
-	  : "i" (offsetof (struct pthread, header.self)));		      \
-     __self;})
-
-/* Magic for libthread_db to know how to do THREAD_SELF.  */
-# define DB_THREAD_SELF \
-  REGISTER_THREAD_AREA (32, offsetof (struct user_regs_struct, xgs), 3) \
-  REGISTER_THREAD_AREA (64, 26 * 8, 3) /* x86-64's user_regs_struct->gs */
-
-
-/* Read member of the thread descriptor directly.  */
-# define THREAD_GETMEM(descr, member) \
-  ({ __typeof (descr->member) __value;					      \
-     if (sizeof (__value) == 1)						      \
-       asm volatile ("movb %%gs:%P2,%b0"				      \
-		     : "=q" (__value)					      \
-		     : "0" (0), "i" (offsetof (struct pthread, member)));     \
-     else if (sizeof (__value) == 4)					      \
-       asm volatile ("movl %%gs:%P1,%0"					      \
-		     : "=r" (__value)					      \
-		     : "i" (offsetof (struct pthread, member)));	      \
-     else								      \
-       {								      \
-	 if (sizeof (__value) != 8)					      \
-	   /* There should not be any value with a size other than 1,	      \
-	      4 or 8.  */						      \
-	   abort ();							      \
-									      \
-	 asm volatile ("movl %%gs:%P1,%%eax\n\t"			      \
-		       "movl %%gs:%P2,%%edx"				      \
-		       : "=A" (__value)					      \
-		       : "i" (offsetof (struct pthread, member)),	      \
-			 "i" (offsetof (struct pthread, member) + 4));	      \
-       }								      \
-     __value; })
-
-
-/* Same as THREAD_GETMEM, but the member offset can be non-constant.  */
-# define THREAD_GETMEM_NC(descr, member, idx) \
-  ({ __typeof (descr->member[0]) __value;				      \
-     if (sizeof (__value) == 1)						      \
-       asm volatile ("movb %%gs:%P2(%3),%b0"				      \
-		     : "=q" (__value)					      \
-		     : "0" (0), "i" (offsetof (struct pthread, member[0])),   \
-		     "r" (idx));					      \
-     else if (sizeof (__value) == 4)					      \
-       asm volatile ("movl %%gs:%P1(,%2,4),%0"				      \
-		     : "=r" (__value)					      \
-		     : "i" (offsetof (struct pthread, member[0])),	      \
-		       "r" (idx));					      \
-     else								      \
-       {								      \
-	 if (sizeof (__value) != 8)					      \
-	   /* There should not be any value with a size other than 1,	      \
-	      4 or 8.  */						      \
-	   abort ();							      \
-									      \
-	 asm volatile  ("movl %%gs:%P1(,%2,8),%%eax\n\t"		      \
-			"movl %%gs:4+%P1(,%2,8),%%edx"			      \
-			: "=&A" (__value)				      \
-			: "i" (offsetof (struct pthread, member[0])),	      \
-			  "r" (idx));					      \
-       }								      \
-     __value; })
-
-
-/* Same as THREAD_SETMEM, but the member offset can be non-constant.  */
-# define THREAD_SETMEM(descr, member, value) \
-  ({ if (sizeof (descr->member) == 1)					      \
-       asm volatile ("movb %b0,%%gs:%P1" :				      \
-		     : "iq" (value),					      \
-		       "i" (offsetof (struct pthread, member)));	      \
-     else if (sizeof (descr->member) == 4)				      \
-       asm volatile ("movl %0,%%gs:%P1" :				      \
-		     : "ir" (value),					      \
-		       "i" (offsetof (struct pthread, member)));	      \
-     else								      \
-       {								      \
-	 if (sizeof (descr->member) != 8)				      \
-	   /* There should not be any value with a size other than 1,	      \
-	      4 or 8.  */						      \
-	   abort ();							      \
-									      \
-	 asm volatile ("movl %%eax,%%gs:%P1\n\t"			      \
-		       "movl %%edx,%%gs:%P2" :				      \
-		       : "A" (value),					      \
-			 "i" (offsetof (struct pthread, member)),	      \
-			 "i" (offsetof (struct pthread, member) + 4));	      \
-       }})
-
-
-/* Set member of the thread descriptor directly.  */
-# define THREAD_SETMEM_NC(descr, member, idx, value) \
-  ({ if (sizeof (descr->member[0]) == 1)				      \
-       asm volatile ("movb %b0,%%gs:%P1(%2)" :				      \
-		     : "iq" (value),					      \
-		       "i" (offsetof (struct pthread, member)),		      \
-		       "r" (idx));					      \
-     else if (sizeof (descr->member[0]) == 4)				      \
-       asm volatile ("movl %0,%%gs:%P1(,%2,4)" :			      \
-		     : "ir" (value),					      \
-		       "i" (offsetof (struct pthread, member)),		      \
-		       "r" (idx));					      \
-     else								      \
-       {								      \
-	 if (sizeof (descr->member[0]) != 8)				      \
-	   /* There should not be any value with a size other than 1,	      \
-	      4 or 8.  */						      \
-	   abort ();							      \
-									      \
-	 asm volatile ("movl %%eax,%%gs:%P1(,%2,8)\n\t"			      \
-		       "movl %%edx,%%gs:4+%P1(,%2,8)" :			      \
-		       : "A" (value),					      \
-			 "i" (offsetof (struct pthread, member)),	      \
-			 "r" (idx));					      \
-       }})
-
-
-/* Atomic compare and exchange on TLS, returning old value.  */
-#define THREAD_ATOMIC_CMPXCHG_VAL(descr, member, newval, oldval) \
-  ({ __typeof (descr->member) __ret;					      \
-     __typeof (oldval) __old = (oldval);				      \
-     if (sizeof (descr->member) == 4)					      \
-       asm volatile (LOCK_PREFIX "cmpxchgl %2, %%gs:%P3"		      \
-		     : "=a" (__ret)					      \
-		     : "0" (__old), "r" (newval),			      \
-		       "i" (offsetof (struct pthread, member)));	      \
-     else								      \
-       /* Not necessary for other sizes in the moment.  */		      \
-       abort ();							      \
-     __ret; })
-
-
-/* Atomic set bit.  */
-#define THREAD_ATOMIC_BIT_SET(descr, member, bit) \
-  (void) ({ if (sizeof ((descr)->member) == 4)				      \
-	      asm volatile (LOCK_PREFIX "orl %1, %%gs:%P0"		      \
-			    :: "i" (offsetof (struct pthread, member)),	      \
-			       "ir" (1 << (bit)));			      \
-	    else							      \
-	      /* Not necessary for other sizes in the moment.  */	      \
-	      abort (); })
-
-
-/* Call the user-provided thread function.  */
-#define CALL_THREAD_FCT(descr) \
-  ({ void *__res;							      \
-     int __ignore1, __ignore2;						      \
-     asm volatile ("pushl %%eax\n\t"					      \
-		   "pushl %%eax\n\t"					      \
-		   "pushl %%eax\n\t"					      \
-		   "pushl %%gs:%P4\n\t"					      \
-		   "call *%%gs:%P3\n\t"					      \
-		   "addl $16, %%esp"					      \
-		   : "=a" (__res), "=c" (__ignore1), "=d" (__ignore2)	      \
-		   : "i" (offsetof (struct pthread, start_routine)),	      \
-		     "i" (offsetof (struct pthread, arg)));		      \
-     __res; })
-
-
-#endif /* __ASSEMBLER__ */
-
-#endif	/* tls.h */