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Viewing changes to sysdeps/mach/hurd/i386/tls.h

  • Committer: Package Import Robot
  • Author(s): Matthias Klose
  • Date: 2011-10-04 17:48:26 UTC
  • mfrom: (216.1.23 oneiric)
  • Revision ID: package-import@ubuntu.com-20111004174826-2cyb9ewn3ucymlsx
Tags: 2.13-20ubuntu5
https://launchpad.net/bugs/853688
libc6-dev: Don't break the current {gnat,gcj}-4.4-base versons. LP: #853688.

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sysdeps/mach/hurd/i386/tls.h
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/* Definitions for thread-local data handling.  Hurd/i386 version.
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   Copyright (C) 2003, 2004, 2006, 2007, 2011 Free Software Foundation, Inc.
 
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   Copyright (C) 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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#ifndef _I386_TLS_H
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#define _I386_TLS_H
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#if defined HAVE_TLS_SUPPORT
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/* Some things really need not be machine-dependent.  */
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#include <sysdeps/mach/hurd/tls.h>
 
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# include <sysdeps/mach/hurd/tls.h>
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/* The TCB can have any size and the memory following the address the
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   thread pointer points to is unspecified.  Allocate the TCB there.  */
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#define TLS_TCB_AT_TP   1
 
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# define TLS_TCB_AT_TP  1
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#ifndef __ASSEMBLER__
 
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# ifndef __ASSEMBLER__
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/* Use i386-specific RPCs to arrange that %gs segment register prefix
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   addresses the TCB in each thread.  */
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# include <errno.h>
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# include <assert.h>
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# define HURD_TLS_DESC_DECL(desc, tcb)                                        \
 
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#define HURD_TLS_DESC_DECL(desc, tcb)                                         \
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  struct descriptor desc =                                                    \
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    {                           /* low word: */                               \
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      0xffff                    /* limit 0..15 */                             \
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# define TLS_INIT_TP_EXPENSIVE 1
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/* Return the TCB address of the current thread.  */
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# define THREAD_SELF                                                          \
 
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# define THREAD_SELF                                                          \
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  ({ tcbhead_t *__tcb;                                                        \
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     __asm__ ("movl %%gs:%c1,%0" : "=r" (__tcb)                               \
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              : "i" (offsetof (tcbhead_t, tcb)));                             \
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                   : : "ir" (dtvp), "i" (offsetof (tcbhead_t, dtv))); })
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/* Return the address of the dtv for the current thread.  */
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# define THREAD_DTV()                                                         \
 
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# define THREAD_DTV()                                                         \
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  ({ dtv_t *_dtv;                                                             \
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     asm ("movl %%gs:%P1,%0" : "=q" (_dtv) : "i" (offsetof (tcbhead_t, dtv)));\
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     _dtv; })
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# include <mach/machine/thread_status.h>
 
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#include <mach/machine/thread_status.h>
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/* Set up TLS in the new thread of a fork child, copying from our own.  */
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static inline error_t __attribute__ ((unused))
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  return err;
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}
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#endif  /* !__ASSEMBLER__ */
 
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# endif /* !__ASSEMBLER__ */
 
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#endif /* HAVE_TLS_SUPPORT */
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#endif  /* i386/tls.h */