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/* 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, see <http://www.gnu.org/licenses/>. */ #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 */ |