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comparison src/cpu/ppc/vm/icBuffer_ppc.cpp @ 14408:ec28f9c041ff

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8019972: PPC64 (part 9): platform files for interpreter only VM. Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs. Reviewed-by: kvn
author goetz
date Fri, 02 Aug 2013 16:46:45 +0200
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14407:94c202aa2646 14408:ec28f9c041ff
1 /*
2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2012, 2013 SAP AG. 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/assembler.hpp"
28 #include "assembler_ppc.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_ppc.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "oops/oop.inline2.hpp"
36
37 #define __ masm.
38
39 int InlineCacheBuffer::ic_stub_code_size() {
40 return MacroAssembler::load_const_size + MacroAssembler::b64_patchable_size;
41 }
42
43 void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point) {
44 ResourceMark rm;
45 CodeBuffer code(code_begin, ic_stub_code_size());
46 MacroAssembler masm(&code);
47 // Note: even though the code contains an embedded metadata, we do not need reloc info
48 // because
49 // (1) the metadata is old (i.e., doesn't matter for scavenges)
50 // (2) these ICStubs are removed *before* a GC happens, so the roots disappear.
51
52 // Load the oop ...
53 __ load_const(R19_method, (address) cached_value, R0);
54 // ... and jump to entry point.
55 __ b64_patchable((address) entry_point, relocInfo::none);
56
57 __ flush();
58 }
59
60 address InlineCacheBuffer::ic_buffer_entry_point(address code_begin) {
61 NativeMovConstReg* move = nativeMovConstReg_at(code_begin); // creation also verifies the object
62 NativeJump* jump = nativeJump_at(move->next_instruction_address());
63 return jump->jump_destination();
64 }
65
66 void* InlineCacheBuffer::ic_buffer_cached_value(address code_begin) {
67 NativeMovConstReg* move = nativeMovConstReg_at(code_begin); // creation also verifies the object
68 void* o = (void*)move->data();
69 return o;
70 }
71