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author | Jing Yu <jingyu@google.com> | 2009-11-05 15:11:04 -0800 |
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committer | Jing Yu <jingyu@google.com> | 2009-11-05 15:11:04 -0800 |
commit | df62c1c110e8532b995b23540b7e3695729c0779 (patch) | |
tree | dbbd4cbdb50ac38011e058a2533ee4c3168b0205 /gcc-4.2.1/libjava/sysdep/ia64 | |
parent | 8d401cf711539af5a2f78d12447341d774892618 (diff) | |
download | toolchain_gcc-df62c1c110e8532b995b23540b7e3695729c0779.tar.gz toolchain_gcc-df62c1c110e8532b995b23540b7e3695729c0779.tar.bz2 toolchain_gcc-df62c1c110e8532b995b23540b7e3695729c0779.zip |
Check in gcc sources for prebuilt toolchains in Eclair.
Diffstat (limited to 'gcc-4.2.1/libjava/sysdep/ia64')
-rw-r--r-- | gcc-4.2.1/libjava/sysdep/ia64/locks.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/gcc-4.2.1/libjava/sysdep/ia64/locks.h b/gcc-4.2.1/libjava/sysdep/ia64/locks.h new file mode 100644 index 000000000..bde43b420 --- /dev/null +++ b/gcc-4.2.1/libjava/sysdep/ia64/locks.h @@ -0,0 +1,49 @@ +// 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 <ia64intrin.h> + +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); +} + +#endif |