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1998-08-26 15:46 Ulrich Drepper <drepper@cygnus.com> * internals.h: Define THREAD_GETMEM and THREAD_SETMEM to default if not already defined. (struct _pthread_descr_struct): Add p_self and p_nr field. * manager.c (__pthread_handles): Define second element to point to manager thread. (__pthread_handles_num): Initialize to 2. (__pthread_manager): Use INIT_THREAD_SELF with two arguments. (pthread_start_thread): Likewise. (pthread_handle_create): Start search for free slot at entry 2. Initialize new fields p_self and p_nr. Call __clone with CLONE_PTRACE if available. (pthread_free): Call FREE_THREAD_SELF if available. * pthread.c (__pthread_initial_thread): Initialize new fields. (__pthread_manager_thread): Likewise. (__pthread_initialize_manager): Call __clone with CLONE_PTRACE. * cancel.c: Use THREAD_GETMEM and THREAD_SETMEM to access the elements of the thread descriptor. * condvar.c: Likewise. * errno.c: Likewise. * join.c: Likewise. * manager.c: Likewise. * pthread.c: Likewise. * ptlongjmp.c: Likewise. * semaphore.c: Likewise. * signals.c: Likewise. * specific.c: Likewise. * spinlock.c: Likewise. * sysdeps/alpha/pt-machine.h (INIT_THREAD_SELF): Add extra parameter. * sysdeps/i386/useldt.h: New file. * sysdeps/i386/i686/pt-machine.h: Show how to use this file. * sysdeps/sparc/sparc32/pt-machine.h: Define THREAD_GETMEM and THREAD_SETMEM using __thread_self. * sysdeps/sparc/sparc64/pt-machine.h: Likewise.
60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
/* Machine-dependent pthreads configuration and inline functions.
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sparc version.
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Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson <rth@tamu.edu>.
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 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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Library General Public License for more details.
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You should have received a copy of the GNU Library 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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/* Spinlock implementation; required. */
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static inline int testandset(int *spinlock)
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{
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int ret;
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__asm__ __volatile__("ldstub %1,%0"
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: "=r"(ret), "=m"(*spinlock)
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: "m"(*spinlock));
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return ret;
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}
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/* Spinlock release; default is just set to zero. */
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#define RELEASE(spinlock) \
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__asm__ __volatile__("stbar; stb %1,%0" : "=m"(*(spinlock)) : "r"(0));
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/* Get some notion of the current stack. Need not be exactly the top
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of the stack, just something somewhere in the current frame. */
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#define CURRENT_STACK_FRAME stack_pointer
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register char * stack_pointer __asm__("%sp");
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/* Registers %g6 and %g7 are reserved by the ABI for "system use". It
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happens that Solaris uses %g6 for the thread pointer -- we do the same. */
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struct _pthread_descr_struct;
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register struct _pthread_descr_struct *__thread_self __asm__("%g6");
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/* Return the thread descriptor for the current thread. */
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#define THREAD_SELF __thread_self
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/* Initialize the thread-unique value. */
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#define INIT_THREAD_SELF(descr) (__thread_self = (descr))
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/* Access to data in the thread descriptor is easy. */
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#define THREAD_GETMEM(descr, member) __thread_self->member
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#define THREAD_SETMEM(descr, member, value) __thread_self->member = (value)
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