1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef CPU_AARCH64_ASSEMBLER_AARCH64_INLINE_HPP
27 #define CPU_AARCH64_ASSEMBLER_AARCH64_INLINE_HPP
28
29 #include "asm/assembler.inline.hpp"
30 #include "asm/codeBuffer.hpp"
31 #include "code/codeCache.hpp"
32
33
offset_ok_for_immed(int64_t offset,uint shift)34 inline bool Address::offset_ok_for_immed(int64_t offset, uint shift) {
35 uint mask = (1 << shift) - 1;
36 if (offset < 0 || (offset & mask) != 0) {
37 // Unscaled signed offset, encoded in a signed imm9 field.
38 return Assembler::is_simm9(offset);
39 } else {
40 // Scaled unsigned offset, encoded in an unsigned imm12:_ field.
41 return Assembler::is_uimm12(offset >> shift);
42 }
43 }
44
45 #endif // CPU_AARCH64_ASSEMBLER_AARCH64_INLINE_HPP
46