| /* Machine-dependent pthreads configuration and inline functions. |
| FR-V version. |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Alexandre Oliva <aoliva@redhat.com> |
| |
| 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 <features.h> |
| |
| #ifndef __ASSEMBLER__ |
| |
| #ifndef PT_EI |
| # define PT_EI __extern_always_inline |
| #endif |
| |
| /* Spinlock implementation; required. */ |
| PT_EI long int |
| testandset (int *spinlock) |
| { |
| int i = 1; |
| __asm__ ("swap%I0 %M0, %1" : "+m"(*(volatile int *)spinlock), "+r"(i)); |
| return i; |
| } |
| |
| /* We want the OS to assign stack addresses. */ |
| #define FLOATING_STACKS 1 |
| |
| /* This symbol is defined by the ABI as the stack size requested by |
| the main program. */ |
| extern char __stacksize; |
| #define ARCH_STACK_MAX_SIZE ((unsigned long)&__stacksize) |
| |
| /* Memory barrier; default is to do nothing */ |
| #define MEMORY_BARRIER() __asm__ __volatile__("membar" : : : "memory") |
| /* Write barrier. */ |
| #define WRITE_MEMORY_BARRIER() __asm__ __volatile__("membar" : : : "memory") |
| |
| /* Return the thread descriptor for the current thread. */ |
| register struct _pthread_descr_struct *THREAD_SELF __asm__ ("gr29"); |
| #define THREAD_SELF THREAD_SELF |
| |
| /* Initialize the thread-unique value. */ |
| #define INIT_THREAD_SELF(descr, nr) \ |
| (THREAD_SELF = descr) |
| |
| /* 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 |
| |
| #endif /* pt-machine.h */ |