From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/sysdep/ia64/locks.h | 61 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 libjava/sysdep/ia64/locks.h (limited to 'libjava/sysdep/ia64') diff --git a/libjava/sysdep/ia64/locks.h b/libjava/sysdep/ia64/locks.h new file mode 100644 index 000000000..1a861b2e3 --- /dev/null +++ b/libjava/sysdep/ia64/locks.h @@ -0,0 +1,61 @@ +// locks.h - Thread synchronization primitives. IA64 implementation. + +/* Copyright (C) 2002 Free Software Foundation + + This file is part of libgcj. + +This software is copyrighted work licensed under the terms of the +Libgcj License. Please consult the file "LIBGCJ_LICENSE" for +details. */ + +#ifndef __SYSDEP_LOCKS_H__ +#define __SYSDEP_LOCKS_H__ + +#include + +typedef size_t obj_addr_t; /* Integer type big enough for object */ + /* address. */ + +inline static bool +compare_and_swap(volatile obj_addr_t *addr, + obj_addr_t old, + obj_addr_t new_val) +{ + return __sync_bool_compare_and_swap (addr, old, new_val); +} + +// The fact that *addr is volatile should cause the compiler to +// automatically generate an st8.rel. +inline static void +release_set(volatile obj_addr_t *addr, obj_addr_t new_val) +{ + __asm__ __volatile__("" : : : "memory"); + *(addr) = new_val; +} + +inline static bool +compare_and_swap_release(volatile obj_addr_t *addr, + obj_addr_t old, + obj_addr_t new_val) +{ + register unsigned long ar_ccv __asm__("ar.ccv") = old; + unsigned long out; + __asm__ __volatile__("cmpxchg8.rel %0=%1,%2,%4" + : "=r"(out), "=m"(*addr) + : "r"(new_val), "m"(*addr), "d"(ar_ccv) : "memory"); + return (out == old); +} + +inline static void +read_barrier() +{ + __sync_synchronize (); +} + +inline static void +write_barrier() +{ + __sync_synchronize (); +} + +#endif -- cgit v1.2.3