mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 20:21:07 +00:00
9a29bc3732
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.
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/* Machine-dependent pthreads configuration and inline functions.
|
|
m68k version.
|
|
Copyright (C) 1996, 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. */
|
|
|
|
#ifndef PT_EI
|
|
# define PT_EI extern inline
|
|
#endif
|
|
|
|
|
|
/* Spinlock implementation; required. */
|
|
PT_EI int
|
|
testandset (int *spinlock)
|
|
{
|
|
char ret;
|
|
|
|
__asm__ __volatile__("tas %1; sne %0"
|
|
: "=dm"(ret), "=m"(*spinlock)
|
|
: "m"(*spinlock)
|
|
: "cc");
|
|
|
|
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");
|
|
|
|
|
|
/* Compare-and-swap for semaphores. */
|
|
|
|
#define HAS_COMPARE_AND_SWAP
|
|
PT_EI int
|
|
__compare_and_swap (long int *p, long int oldval, long int newval)
|
|
{
|
|
char ret;
|
|
long int readval;
|
|
|
|
__asm__ __volatile__ ("casl %2, %3, %1; seq %0"
|
|
: "=dm" (ret), "=m" (*p), "=d" (readval)
|
|
: "d" (newval), "m" (*p), "2" (oldval));
|
|
|
|
return ret;
|
|
}
|