1 /*
2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2009 Red Hat, Inc.
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 class SharkCodeBuffer : public StackObj {
27 public:
28 SharkCodeBuffer(MacroAssembler* masm)
29 : _masm(masm), _base_pc(NULL) {}
30
31 private:
32 MacroAssembler* _masm;
33 llvm::Value* _base_pc;
34
35 private:
36 MacroAssembler* masm() const {
37 return _masm;
38 }
39
40 public:
41 llvm::Value* base_pc() const {
42 return _base_pc;
43 }
44 void set_base_pc(llvm::Value* base_pc) {
45 assert(_base_pc == NULL, "only do this once");
68 // Inline an oop into the buffer and return its offset.
69 public:
70 int inline_oop(jobject object) const {
71 masm()->align(BytesPerWord);
72 int offset = masm()->offset();
73 masm()->store_oop(object);
74 return offset;
75 }
76
77 // Inline a block of non-oop data into the buffer and return its offset.
78 public:
79 int inline_data(void *src, size_t size) const {
80 masm()->align(BytesPerWord);
81 int offset = masm()->offset();
82 void *dst = masm()->pc();
83 masm()->advance(size);
84 memcpy(dst, src, size);
85 return offset;
86 }
87 };
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1 /*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2009 Red Hat, Inc.
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 SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
27 #define SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
28
29 #include "asm/codeBuffer.hpp"
30 #include "memory/allocation.hpp"
31 #include "shark/llvmHeaders.hpp"
32
33 class SharkCodeBuffer : public StackObj {
34 public:
35 SharkCodeBuffer(MacroAssembler* masm)
36 : _masm(masm), _base_pc(NULL) {}
37
38 private:
39 MacroAssembler* _masm;
40 llvm::Value* _base_pc;
41
42 private:
43 MacroAssembler* masm() const {
44 return _masm;
45 }
46
47 public:
48 llvm::Value* base_pc() const {
49 return _base_pc;
50 }
51 void set_base_pc(llvm::Value* base_pc) {
52 assert(_base_pc == NULL, "only do this once");
75 // Inline an oop into the buffer and return its offset.
76 public:
77 int inline_oop(jobject object) const {
78 masm()->align(BytesPerWord);
79 int offset = masm()->offset();
80 masm()->store_oop(object);
81 return offset;
82 }
83
84 // Inline a block of non-oop data into the buffer and return its offset.
85 public:
86 int inline_data(void *src, size_t size) const {
87 masm()->align(BytesPerWord);
88 int offset = masm()->offset();
89 void *dst = masm()->pc();
90 masm()->advance(size);
91 memcpy(dst, src, size);
92 return offset;
93 }
94 };
95
96 #endif // SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
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