1 /*
2 * Copyright (c) 1997, 2010, 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 #include "precompiled.hpp"
27 #include "asm/macroAssembler.hpp"
28 #include "asm/macroAssembler.inline.hpp"
29 #include "code/icBuffer.hpp"
30 #include "gc_interface/collectedHeap.inline.hpp"
31 #include "interpreter/bytecodes.hpp"
32 #include "memory/resourceArea.hpp"
33 #include "nativeInst_aarch64.hpp"
34 #include "oops/oop.inline.hpp"
35
36 int InlineCacheBuffer::ic_stub_code_size() {
37 return (MacroAssembler::far_branches() ? 6 : 4) * NativeInstruction::instruction_size;
38 }
39
40 #define __ masm->
41
42 void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point) {
43 ResourceMark rm;
44 CodeBuffer code(code_begin, ic_stub_code_size());
45 MacroAssembler* masm = new MacroAssembler(&code);
46 // note: even though the code contains an embedded value, we do not need reloc info
47 // because
48 // (1) the value is old (i.e., doesn't matter for scavenges)
49 // (2) these ICStubs are removed *before* a GC happens, so the roots disappear
50 // assert(cached_value == NULL || cached_oop->is_perm(), "must be perm oop");
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1 /*
2 * Copyright (c) 1997, 2015, 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 #include "precompiled.hpp"
27 #include "asm/macroAssembler.hpp"
28 #include "asm/macroAssembler.inline.hpp"
29 #include "code/icBuffer.hpp"
30 #include "gc/shared/collectedHeap.inline.hpp"
31 #include "interpreter/bytecodes.hpp"
32 #include "memory/resourceArea.hpp"
33 #include "nativeInst_aarch64.hpp"
34 #include "oops/oop.inline.hpp"
35
36 int InlineCacheBuffer::ic_stub_code_size() {
37 return (MacroAssembler::far_branches() ? 6 : 4) * NativeInstruction::instruction_size;
38 }
39
40 #define __ masm->
41
42 void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point) {
43 ResourceMark rm;
44 CodeBuffer code(code_begin, ic_stub_code_size());
45 MacroAssembler* masm = new MacroAssembler(&code);
46 // note: even though the code contains an embedded value, we do not need reloc info
47 // because
48 // (1) the value is old (i.e., doesn't matter for scavenges)
49 // (2) these ICStubs are removed *before* a GC happens, so the roots disappear
50 // assert(cached_value == NULL || cached_oop->is_perm(), "must be perm oop");
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