glibc/linuxthreads/sysdeps/arm/pt-machine.h
Ulrich Drepper 9a29bc3732 Update.
1998-10-09  Ulrich Drepper  <drepper@cygnus.com>

	* posix/ptestcases.h: Fix typo.

1998-10-08  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de>

	* posix/regex.c (regcomp): Allocate and prepare a fastmap.
	(regexec): Allocate regs.start and regs.end as one block.

1998-10-08  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/bits/socket.h: Remove comma at end of
	enum decl.

1998-10-08  Philip Blundell  <pb@nexus.co.uk>

	* sysdeps/unix/sysv/linux/arm/profil-counter.h: Move definition of
	sigcontext union to ...
	* sysdeps/unix/sysv/linux/arm/bits/armsigctx.h: ... here.  New
	file.
	* sysdeps/unix/sysv/linux/arm/register-dump.h: Add support for
	version 2.0 kernels.
1998-10-09 11:22:46 +00:00

49 lines
1.7 KiB
C

/* Machine-dependent pthreads configuration and inline functions.
ARM version.
Copyright (C) 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Philip Blundell <philb@gnu.org>.
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. */
#ifndef PT_EI
# define PT_EI extern inline
#endif
/* This will not work on ARM1 or ARM2 because SWP is lacking on those
machines. Unfortunately we have no way to detect this at compile
time; let's hope nobody tries to use one. */
/* Spinlock implementation; required. */
PT_EI int
testandset (int *spinlock)
{
register unsigned int ret;
__asm__ __volatile__("swp %0, %1, [%2]"
: "=r"(ret)
: "0"(1), "r"(spinlock));
return ret;
}
/* 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");