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Viewing changes to libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h

  • Committer: Bazaar Package Importer
  • Author(s): Hector Oron
  • Date: 2011-06-11 03:06:20 UTC
  • mfrom: (1.1.3 upstream)
  • Revision ID: james.westby@ubuntu.com-20110611030620-ywjfvyuqvrpsm282
Tags: 0.9.32-1
* New upstream release
* Add myself as maintainer
* Bump standards version 
* Add Vcs-Git, Vcs-Browser and Homepage fields
* Add watch file 

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libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
 
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/* Cancellable system call stubs.  Linux/PowerPC64 version.
 
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   Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
 
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   This file is part of the GNU C Library.
 
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   Contributed by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>, 2003.
 
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   The GNU C Library is free software; you can redistribute it and/or
 
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   modify it under the terms of the GNU Lesser General Public
 
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   License as published by the Free Software Foundation; either
 
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   version 2.1 of the License, or (at your option) any later version.
 
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   The GNU C Library is distributed in the hope that it will be useful,
 
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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   Lesser General Public License for more details.
 
15
 
 
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   You should have received a copy of the GNU Lesser General Public
 
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   License along with the GNU C Library; if not, write to the Free
 
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   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA
 
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   02110-1301 USA.  */
 
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#include <sysdep.h>
 
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#include <tls.h>
 
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#ifndef __ASSEMBLER__
 
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# include <pthreadP.h>
 
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#endif
 
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#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
 
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# ifdef HAVE_ASM_GLOBAL_DOT_NAME
 
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#  define DASHDASHPFX(str) .__##str
 
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# else
 
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#  define DASHDASHPFX(str) __##str
 
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# endif
 
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# undef PSEUDO
 
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# define PSEUDO(name, syscall_name, args)                               \
 
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  .section ".text";                                                     \
 
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  ENTRY (name)                                                          \
 
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    SINGLE_THREAD_P;                                                    \
 
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    bne- .Lpseudo_cancel;                                               \
 
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  .type DASHDASHPFX(syscall_name##_nocancel),@function;                 \
 
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  .globl DASHDASHPFX(syscall_name##_nocancel);                          \
 
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  DASHDASHPFX(syscall_name##_nocancel):                                 \
 
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    DO_CALL (SYS_ify (syscall_name));                                   \
 
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    PSEUDO_RET;                                                         \
 
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  .size DASHDASHPFX(syscall_name##_nocancel),.-DASHDASHPFX(syscall_name##_nocancel);    \
 
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  .Lpseudo_cancel:                                                      \
 
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    stdu 1,-128(1);                                                     \
 
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    cfi_adjust_cfa_offset (128);                                        \
 
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    mflr 9;                                                             \
 
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    std  9,128+16(1);                                                   \
 
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    cfi_offset (lr, 16);                                                \
 
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    DOCARGS_##args;     /* save syscall args around CENABLE.  */        \
 
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    CENABLE;                                                            \
 
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    std  3,72(1);       /* store CENABLE return value (MASK).  */       \
 
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    UNDOCARGS_##args;   /* restore syscall args.  */                    \
 
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    DO_CALL (SYS_ify (syscall_name));                                   \
 
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    mfcr 0;             /* save CR/R3 around CDISABLE.  */              \
 
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    std  3,64(1);                                                       \
 
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    std  0,8(1);                                                        \
 
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    ld   3,72(1);       /* pass MASK to CDISABLE.  */                   \
 
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    CDISABLE;                                                           \
 
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    ld   9,128+16(1);                                                   \
 
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    ld   0,8(1);        /* restore CR/R3. */                            \
 
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    ld   3,64(1);                                                       \
 
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    mtlr 9;                                                             \
 
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    mtcr 0;                                                             \
 
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    addi 1,1,128;
 
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# define DOCARGS_0
 
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# define UNDOCARGS_0
 
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# define DOCARGS_1      std 3,80(1); DOCARGS_0
 
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# define UNDOCARGS_1    ld 3,80(1); UNDOCARGS_0
 
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# define DOCARGS_2      std 4,88(1); DOCARGS_1
 
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# define UNDOCARGS_2    ld 4,88(1); UNDOCARGS_1
 
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# define DOCARGS_3      std 5,96(1); DOCARGS_2
 
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# define UNDOCARGS_3    ld 5,96(1); UNDOCARGS_2
 
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# define DOCARGS_4      std 6,104(1); DOCARGS_3
 
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# define UNDOCARGS_4    ld 6,104(1); UNDOCARGS_3
 
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# define DOCARGS_5      std 7,112(1); DOCARGS_4
 
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# define UNDOCARGS_5    ld 7,112(1); UNDOCARGS_4
 
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# define DOCARGS_6      std 8,120(1); DOCARGS_5
 
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# define UNDOCARGS_6    ld 8,120(1); UNDOCARGS_5
 
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# ifdef IS_IN_libpthread
 
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#  define CENABLE       bl JUMPTARGET(__pthread_enable_asynccancel)
 
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#  define CDISABLE      bl JUMPTARGET(__pthread_disable_asynccancel)
 
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# elif !defined NOT_IN_libc
 
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#  define CENABLE       bl JUMPTARGET(__libc_enable_asynccancel)
 
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#  define CDISABLE      bl JUMPTARGET(__libc_disable_asynccancel)
 
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# elif defined IS_IN_librt
 
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#  define CENABLE       bl JUMPTARGET(__librt_enable_asynccancel)
 
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#  define CDISABLE      bl JUMPTARGET(__librt_disable_asynccancel)
 
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# else
 
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#  error Unsupported library
 
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# endif
 
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# ifndef __ASSEMBLER__
 
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#  define SINGLE_THREAD_P                                               \
 
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  __builtin_expect (THREAD_GETMEM (THREAD_SELF,                         \
 
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                                   header.multiple_threads) == 0, 1)
 
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# else
 
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#   define SINGLE_THREAD_P                                              \
 
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  lwz   10,MULTIPLE_THREADS_OFFSET(13);                         \
 
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  cmpwi 10,0
 
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# endif
 
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#elif !defined __ASSEMBLER__
 
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# define SINGLE_THREAD_P (1)
 
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# define NO_CANCELLATION 1
 
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#endif
 
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#ifndef __ASSEMBLER__
 
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# define RTLD_SINGLE_THREAD_P \
 
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  __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
 
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                                   header.multiple_threads) == 0, 1)
 
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#endif