From 4d8e5484afb4978f672a8568ddd12e628fb02724 Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Thu, 8 Oct 2015 20:28:39 +0200 Subject: add new architecture support for or1k Information about Openrisc: http://opencores.org/or1k/Main_Page Integrated from: https://github.com/openrisc/uClibc-or1k --- libpthread/linuxthreads/sysdeps/or1k/pt-machine.h | 55 +++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 libpthread/linuxthreads/sysdeps/or1k/pt-machine.h (limited to 'libpthread') diff --git a/libpthread/linuxthreads/sysdeps/or1k/pt-machine.h b/libpthread/linuxthreads/sysdeps/or1k/pt-machine.h new file mode 100644 index 000000000..c6c8ee470 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/or1k/pt-machine.h @@ -0,0 +1,55 @@ +/* Machine-dependent pthreads configuration and inline functions. + OpenRISC 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, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 + +#include +#include + +#ifndef PT_EI +# define PT_EI __extern_always_inline +#endif + +PT_EI long int testandset(int*); + +#define OR1K_ATOMIC_XCHG 1 + +PT_EI long int +testandset (int *spinlock) +{ + int err; + int oldvalue = 1; + + err = INLINE_SYSCALL(or1k_atomic, 3, OR1K_ATOMIC_XCHG, spinlock, &oldvalue); + + return (oldvalue); +} + +/* 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() +static inline char *stack_pointer(void) +{ + unsigned long ret; + __asm__ __volatile__ ("l.ori %0, r1, 0" : "=r" (ret)); + return (char *)ret; +} +#endif /* pt-machine.h */ -- cgit v1.2.3