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0daa050021
* sysdeps/hppa/dl-machine.h (elf_machine_fixup_plt): Remove lvalue cast. * sysdeps/hppa/dl-trampoline.S (_dl_fixup): Correct stack usage. (_dl_runtime_profile): LA fixups. * sysdeps/unix/sysv/linux/hppa/clone.S: Correct stack usage. Return -1 on error. Use branch and link for error handler funciton. * sysdeps/unix/sysv/linux/hppa/sysdep.h: Correct stack usage. Avoid register shuffling. * sysdeps/unix/sysv/linux/hppa/bits/atomic.h (ASM_EAGAIN): Define as -EAGAIN. * sysdeps/unix/sysv/linux/hppa/bits/mman.h: Adjust definitions to match required standards. * sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h (lll_futex_wait): Return __ret. (lll_futex_timed_wait): Likewise. (lll_futex_wake): Likewise. (lll_futex_requeue): Likewise. * sysdeps/unix/sysv/linux/hppa/nptl/pt-vfork.S: Correct stack usage and adjust error return. * sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h: Adjust stack usage for gdb, and avoid extra register loads. * sysdeps/unix/sysv/linux/hppa/nptl/unwind-forcedunwind.c: Copy nptl/sysdeps/pthread/unwind-forcedunwind.c. (LIBGCC_SO): Define and use. * sysdeps/unix/sysv/linux/hppa/nptl/unwind-resume.c: Copy nptl/sysdeps/pthread/unwind-resume.c. (LIBGCC_SO): Define and use.
116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
/* Copyright (C) 2005, 2006 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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modify it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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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.
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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; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <dlfcn.h>
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#include <stdio.h>
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#include <unwind.h>
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#include <pthreadP.h>
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#define LIBGCC_S_SO "libgcc_s.so.4"
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static void (*libgcc_s_resume) (struct _Unwind_Exception *exc);
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static _Unwind_Reason_Code (*libgcc_s_personality)
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(int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *,
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struct _Unwind_Context *);
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static _Unwind_Reason_Code (*libgcc_s_forcedunwind)
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(struct _Unwind_Exception *, _Unwind_Stop_Fn, void *);
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static _Unwind_Word (*libgcc_s_getcfa) (struct _Unwind_Context *);
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#ifndef LIBGCC_S_SO
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#define LIBGCC_S_SO "libgcc_s.so.1"
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#endif
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void
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__attribute_noinline__
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pthread_cancel_init (void)
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{
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void *resume, *personality, *forcedunwind, *getcfa;
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void *handle;
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if (__builtin_expect (libgcc_s_getcfa != NULL, 1))
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{
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/* Force gcc to reload all values. */
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asm volatile ("" ::: "memory");
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return;
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}
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handle = __libc_dlopen (LIBGCC_S_SO);
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if (handle == NULL
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|| (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL
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|| (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL
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|| (forcedunwind = __libc_dlsym (handle, "_Unwind_ForcedUnwind"))
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== NULL
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|| (getcfa = __libc_dlsym (handle, "_Unwind_GetCFA")) == NULL
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#ifdef ARCH_CANCEL_INIT
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|| ARCH_CANCEL_INIT (handle)
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#endif
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)
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__libc_fatal ("libgcc_s.so must be installed for pthread_cancel to work\n");
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libgcc_s_resume = resume;
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libgcc_s_personality = personality;
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libgcc_s_forcedunwind = forcedunwind;
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/* Make sure libgcc_s_getcfa is written last. Otherwise,
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pthread_cancel_init might return early even when the pointer the
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caller is interested in is not initialized yet. */
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atomic_write_barrier ();
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libgcc_s_getcfa = getcfa;
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}
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void
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_Unwind_Resume (struct _Unwind_Exception *exc)
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{
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if (__builtin_expect (libgcc_s_resume == NULL, 0))
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pthread_cancel_init ();
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libgcc_s_resume (exc);
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}
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_Unwind_Reason_Code
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__gcc_personality_v0 (int version, _Unwind_Action actions,
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_Unwind_Exception_Class exception_class,
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struct _Unwind_Exception *ue_header,
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struct _Unwind_Context *context)
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{
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if (__builtin_expect (libgcc_s_personality == NULL, 0))
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pthread_cancel_init ();
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return libgcc_s_personality (version, actions, exception_class,
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ue_header, context);
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}
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_Unwind_Reason_Code
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_Unwind_ForcedUnwind (struct _Unwind_Exception *exc, _Unwind_Stop_Fn stop,
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void *stop_argument)
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{
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if (__builtin_expect (libgcc_s_forcedunwind == NULL, 0))
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pthread_cancel_init ();
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return libgcc_s_forcedunwind (exc, stop, stop_argument);
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}
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_Unwind_Word
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_Unwind_GetCFA (struct _Unwind_Context *context)
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{
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if (__builtin_expect (libgcc_s_getcfa == NULL, 0))
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pthread_cancel_init ();
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return libgcc_s_getcfa (context);
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}
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