mirror of
https://sourceware.org/git/glibc.git
synced 2025-09-08 13:52:10 +03:00
75311719d3
1998-08-28 13:58 Ulrich Drepper <drepper@cygnus.com> * internals.h: Also define THREAD_GETMEM_NC and THREAD_SETMEM_NC to access thread data with non-constant offsets. * specific.c: Use THREAD_GETMEM_NC and THREAD_SETMEM_NC where necessary. * sysdeps/i386/useldt.h: Fix typo. Add THREAD_GETMEM_NC and THREAD_SETMEM_NC definitions. * sysdeps/sparc/sparc32/pt-machine.h: Define THREAD_GETMEM_NC and THREAD_SETMEM_NC. * sysdeps/sparc/sparc64/pt-machine.h: Likewise.
62 lines
2.3 KiB
C
62 lines
2.3 KiB
C
/* Machine-dependent pthreads configuration and inline functions.
|
|
sparc version.
|
|
Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Richard Henderson <rth@tamu.edu>.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library 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. */
|
|
|
|
/* Spinlock implementation; required. */
|
|
static inline int testandset(int *spinlock)
|
|
{
|
|
int ret;
|
|
|
|
__asm__ __volatile__("ldstub %1,%0"
|
|
: "=r"(ret), "=m"(*spinlock)
|
|
: "m"(*spinlock));
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* Spinlock release; default is just set to zero. */
|
|
#define RELEASE(spinlock) \
|
|
__asm__ __volatile__("stbar; stb %1,%0" : "=m"(*(spinlock)) : "r"(0));
|
|
|
|
|
|
/* 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
|
|
register char * stack_pointer __asm__("%sp");
|
|
|
|
|
|
/* Registers %g6 and %g7 are reserved by the ABI for "system use". It
|
|
happens that Solaris uses %g6 for the thread pointer -- we do the same. */
|
|
struct _pthread_descr_struct;
|
|
register struct _pthread_descr_struct *__thread_self __asm__("%g6");
|
|
|
|
/* Return the thread descriptor for the current thread. */
|
|
#define THREAD_SELF __thread_self
|
|
|
|
/* Initialize the thread-unique value. */
|
|
#define INIT_THREAD_SELF(descr) (__thread_self = (descr))
|
|
|
|
/* Access to data in the thread descriptor is easy. */
|
|
#define THREAD_GETMEM(descr, member) __thread_self->member
|
|
#define THREAD_GETMEM_NC(descr, member) __thread_self->member
|
|
#define THREAD_SETMEM(descr, member, value) __thread_self->member = (value)
|
|
#define THREAD_SETMEM_NC(descr, member, value) __thread_self->member = (value)
|