From cccc549ced940c85039c8ce263c8bb571f244afd Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Tue, 31 Jan 2006 05:05:15 +0000 Subject: initial import of latest linuxthreads --- .../sysdeps/sparc/sparc32/pt-machine.h | 83 ++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 libpthread/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h (limited to 'libpthread/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h') diff --git a/libpthread/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h b/libpthread/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h new file mode 100644 index 000000000..322a52051 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h @@ -0,0 +1,83 @@ +/* Machine-dependent pthreads configuration and inline functions. + sparc version. + Copyright (C) 1996-1998, 2000-2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson . + + 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; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 + +#ifndef PT_EI +# define PT_EI extern inline __attribute__ ((always_inline)) +#endif + +extern long int testandset (int *spinlock); +extern int __compare_and_swap (long int *p, long int oldval, long int newval); + +/* Spinlock implementation; required. */ +PT_EI long int +testandset (int *spinlock) +{ + int ret; + + __asm__ __volatile__("ldstub %1,%0" + : "=r"(ret), "=m"(*spinlock) + : "m"(*spinlock)); + + return ret; +} + + +/* Memory barrier; default is to do nothing */ +#define MEMORY_BARRIER() __asm__ __volatile__("stbar" : : : "memory") + + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME (stack_pointer + (2 * 64)) +register char *stack_pointer __asm__("%sp"); + + +/* Registers %g6 and %g7 are reserved by the ABI for "system use". + %g7 is specified in the TLS ABI as thread pointer -- we do the same. */ +struct _pthread_descr_struct; +register struct _pthread_descr_struct *__thread_self __asm__("%g7"); + +/* Return the thread descriptor for the current thread. */ +#define THREAD_SELF __thread_self + +/* Initialize the thread-unique value. */ +#define INIT_THREAD_SELF(descr, nr) (__thread_self = (descr)) + +/* Access to data in the thread descriptor is easy. */ +#define THREAD_GETMEM(descr, member) \ + ((void) sizeof (descr), THREAD_SELF->member) +#define THREAD_GETMEM_NC(descr, member) \ + ((void) sizeof (descr), THREAD_SELF->member) +#define THREAD_SETMEM(descr, member, value) \ + ((void) sizeof (descr), THREAD_SELF->member = (value)) +#define THREAD_SETMEM_NC(descr, member, value) \ + ((void) sizeof (descr), THREAD_SELF->member = (value)) + +/* We want the OS to assign stack addresses. */ +#define FLOATING_STACKS 1 + +/* Maximum size of the stack if the rlimit is unlimited. */ +#define ARCH_STACK_MAX_SIZE 8*1024*1024 + +#endif /* pt-machine.h */ -- cgit v1.2.3