Mercurial > hg > truffle
annotate src/cpu/x86/vm/icBuffer_x86.cpp @ 3096:8073f5ad1d87
IdealGraphVisualizer: Rename predecessors to "Nodes Above" and successors to "Nodes Below" and actions "Expand Predecessors" and "Expand Successors" to "Expand Above" and "Expand Below" to avoid ambiguity with the Graal concept of successors and predecessors
| author | Peter Hofer <peter.hofer@jku.at> |
|---|---|
| date | Wed, 29 Jun 2011 18:27:14 +0200 |
| parents | f95d63e2154a |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "asm/assembler.hpp" | |
| 27 #include "assembler_x86.inline.hpp" | |
| 28 #include "code/icBuffer.hpp" | |
| 29 #include "gc_interface/collectedHeap.inline.hpp" | |
| 30 #include "interpreter/bytecodes.hpp" | |
| 31 #include "memory/resourceArea.hpp" | |
| 32 #include "nativeInst_x86.hpp" | |
| 33 #include "oops/oop.inline.hpp" | |
| 34 #include "oops/oop.inline2.hpp" | |
| 0 | 35 |
| 36 int InlineCacheBuffer::ic_stub_code_size() { | |
| 37 return NativeMovConstReg::instruction_size + | |
| 38 NativeJump::instruction_size + | |
| 39 1; | |
| 40 // so that code_end can be set in CodeBuffer | |
| 41 // 64bit 16 = 5 + 10 bytes + 1 byte | |
| 42 // 32bit 11 = 10 bytes + 1 byte | |
| 43 } | |
| 44 | |
| 45 | |
| 46 | |
| 47 void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, oop cached_oop, address entry_point) { | |
| 48 ResourceMark rm; | |
| 49 CodeBuffer code(code_begin, ic_stub_code_size()); | |
| 50 MacroAssembler* masm = new MacroAssembler(&code); | |
| 51 // note: even though the code contains an embedded oop, we do not need reloc info | |
| 52 // because | |
| 53 // (1) the oop is old (i.e., doesn't matter for scavenges) | |
| 54 // (2) these ICStubs are removed *before* a GC happens, so the roots disappear | |
| 55 assert(cached_oop == NULL || cached_oop->is_perm(), "must be perm oop"); | |
| 56 masm->lea(rax, OopAddress((address) cached_oop)); | |
| 57 masm->jump(ExternalAddress(entry_point)); | |
| 58 } | |
| 59 | |
| 60 | |
| 61 address InlineCacheBuffer::ic_buffer_entry_point(address code_begin) { | |
| 62 NativeMovConstReg* move = nativeMovConstReg_at(code_begin); // creation also verifies the object | |
| 63 NativeJump* jump = nativeJump_at(move->next_instruction_address()); | |
| 64 return jump->jump_destination(); | |
| 65 } | |
| 66 | |
| 67 | |
| 68 oop InlineCacheBuffer::ic_buffer_cached_oop(address code_begin) { | |
| 69 // creation also verifies the object | |
| 70 NativeMovConstReg* move = nativeMovConstReg_at(code_begin); | |
| 71 // Verifies the jump | |
| 72 NativeJump* jump = nativeJump_at(move->next_instruction_address()); | |
| 73 return (oop)move->data(); | |
| 74 } |