From e1e46622ac0fce73d802fa4a8a2e83cc25cd9e7a Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Sat, 14 Feb 2015 23:04:02 -0600 Subject: Revert "resolve merge" This reverts commit 6b6ede3d15f04fe825cfa9f697507457e3640344. --- .../linuxthreads.old/sysdeps/cris/pt-machine.h | 69 ++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h (limited to 'libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h') diff --git a/libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h b/libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h new file mode 100644 index 000000000..a89579ee0 --- /dev/null +++ b/libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h @@ -0,0 +1,69 @@ +/* Machine-dependent pthreads configuration and inline functions. + CRIS version. + Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, + see . */ +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 + +#include + +#ifndef PT_EI +# define PT_EI __extern_always_inline +#endif + +PT_EI long int +testandset (int *spinlock) +{ + register unsigned long int ret; + + /* Note the use of a dummy output of *spinlock to expose the write. The + memory barrier is to stop *other* writes being moved past this code. */ + +#ifdef __arch_v32 + __asm__ __volatile__("clearf p\n" + "0:\n\t" + "movu.b [%2],%0\n\t" + "ax\n\t" + "move.b %3,[%2]\n\t" + "bcs 0b\n\t" + "clearf p" + : "=&r" (ret), "=m" (*spinlock) + : "r" (spinlock), "r" ((int) 1), "m" (*spinlock) + : "memory"); +#else /* not __arch_v32 */ + __asm__ __volatile__("clearf\n" + "0:\n\t" + "movu.b [%2],%0\n\t" + "ax\n\t" + "move.b %3,[%2]\n\t" + "bwf 0b\n\t" + "clearf" + : "=&r" (ret), "=m" (*spinlock) + : "r" (spinlock), "r" ((int) 1), "m" (*spinlock) + : "memory"); +#endif /* __arch_v32 */ + 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. + I don't trust register variables, so let's do this the safe way. */ +#define CURRENT_STACK_FRAME \ + ({ char *sp; __asm__ ("move.d $sp,%0" : "=rm" (sp)); sp; }) + +#endif /* pt-machine.h */ -- cgit v1.2.3