diff options
Diffstat (limited to 'libpthread/linuxthreads.old/sysdeps/arm/pt-machine.h')
-rw-r--r-- | libpthread/linuxthreads.old/sysdeps/arm/pt-machine.h | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/libpthread/linuxthreads.old/sysdeps/arm/pt-machine.h b/libpthread/linuxthreads.old/sysdeps/arm/pt-machine.h deleted file mode 100644 index fc17e9bc7..000000000 --- a/libpthread/linuxthreads.old/sysdeps/arm/pt-machine.h +++ /dev/null @@ -1,109 +0,0 @@ -/* Machine-dependent pthreads configuration and inline functions. - ARM version. - Copyright (C) 1997, 1998, 2000, 2002 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 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 <http://www.gnu.org/licenses/>. */ - -#ifndef _PT_MACHINE_H -#define _PT_MACHINE_H 1 - -#include <sys/syscall.h> -#include <unistd.h> - -#ifndef PT_EI -# define PT_EI __extern_always_inline -#endif - -#if defined(__thumb2__) -PT_EI long int ldrex(int *spinlock) -{ - long int ret; - __asm__ __volatile__( - "ldrex %0, [%1]\n" - : "=r"(ret) - : "r"(spinlock) : "memory"); - return ret; -} - -PT_EI long int strex(int val, int *spinlock) -{ - long int ret; - __asm__ __volatile__( - "strex %0, %1, [%2]\n" - : "=r"(ret) - : "r" (val), "r"(spinlock) : "memory"); - return ret; -} - -/* Spinlock implementation; required. */ -PT_EI long int -testandset (int *spinlock) -{ - register unsigned int ret; - - do { - ret = ldrex(spinlock); - } while (strex(1, spinlock)); - - return ret; -} - -#elif defined(__thumb__) - -/* 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 long int testandset (int *spinlock); -PT_EI long int testandset (int *spinlock) -{ - register unsigned int ret; - void *pc; - __asm__ __volatile__( - ".align 0\n" - "\tbx pc\n" - "\tnop\n" - "\t.arm\n" - "\tswp %0, %2, [%3]\n" - "\torr %1, pc, #1\n" - "\tbx %1\n" - "\t.force_thumb" - : "=r"(ret), "=r"(pc) - : "0"(1), "r"(spinlock)); - return ret; -} - -#else /* __thumb__ */ - -PT_EI long int testandset (int *spinlock); -PT_EI long int testandset (int *spinlock) -{ - register unsigned int ret; - __asm__ __volatile__("swp %0, %1, [%2]" - : "=r"(ret) - : "0"(1), "r"(spinlock)); - return ret; -} -#endif - -/* 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"); - -#endif /* pt-machine.h */ |