9c458decf5
Add src/cpu/aarch64/vm/* interpreter, shared runtime files. Reviewed-by: kvn, roland, coleenp, twisti
76 lines
3.3 KiB
C++
76 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
* Copyright (c) 2014, Red Hat Inc. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code 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 General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
#ifndef CPU_AARCH64_VM_BYTES_AARCH64_HPP
|
|
#define CPU_AARCH64_VM_BYTES_AARCH64_HPP
|
|
|
|
#include "memory/allocation.hpp"
|
|
|
|
class Bytes: AllStatic {
|
|
public:
|
|
// Returns true if the byte ordering used by Java is different from the native byte ordering
|
|
// of the underlying machine. For example, this is true for Intel x86, but false for Solaris
|
|
// on Sparc.
|
|
static inline bool is_Java_byte_ordering_different(){ return true; }
|
|
|
|
|
|
// Efficient reading and writing of unaligned unsigned data in platform-specific byte ordering
|
|
// (no special code is needed since x86 CPUs can access unaligned data)
|
|
static inline u2 get_native_u2(address p) { return *(u2*)p; }
|
|
static inline u4 get_native_u4(address p) { return *(u4*)p; }
|
|
static inline u8 get_native_u8(address p) { return *(u8*)p; }
|
|
|
|
static inline void put_native_u2(address p, u2 x) { *(u2*)p = x; }
|
|
static inline void put_native_u4(address p, u4 x) { *(u4*)p = x; }
|
|
static inline void put_native_u8(address p, u8 x) { *(u8*)p = x; }
|
|
|
|
|
|
// Efficient reading and writing of unaligned unsigned data in Java
|
|
// byte ordering (i.e. big-endian ordering). Byte-order reversal is
|
|
// needed since x86 CPUs use little-endian format.
|
|
static inline u2 get_Java_u2(address p) { return swap_u2(get_native_u2(p)); }
|
|
static inline u4 get_Java_u4(address p) { return swap_u4(get_native_u4(p)); }
|
|
static inline u8 get_Java_u8(address p) { return swap_u8(get_native_u8(p)); }
|
|
|
|
static inline void put_Java_u2(address p, u2 x) { put_native_u2(p, swap_u2(x)); }
|
|
static inline void put_Java_u4(address p, u4 x) { put_native_u4(p, swap_u4(x)); }
|
|
static inline void put_Java_u8(address p, u8 x) { put_native_u8(p, swap_u8(x)); }
|
|
|
|
|
|
// Efficient swapping of byte ordering
|
|
static inline u2 swap_u2(u2 x); // compiler-dependent implementation
|
|
static inline u4 swap_u4(u4 x); // compiler-dependent implementation
|
|
static inline u8 swap_u8(u8 x);
|
|
};
|
|
|
|
|
|
// The following header contains the implementations of swap_u2, swap_u4, and swap_u8[_base]
|
|
|
|
#ifdef TARGET_OS_ARCH_linux_aarch64
|
|
# include "bytes_linux_aarch64.inline.hpp"
|
|
#endif
|
|
|
|
#endif // CPU_AARCH64_VM_BYTES_AARCH64_HPP
|