Mercurial > hg > truffle
annotate src/cpu/x86/vm/icBuffer_x86.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | f95d63e2154a |
| children | cd3d6a6b95d9 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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2 * Copyright (c) 1997, 2012, 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 | |
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6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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47 void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point) { |
| 0 | 48 ResourceMark rm; |
| 49 CodeBuffer code(code_begin, ic_stub_code_size()); | |
| 50 MacroAssembler* masm = new MacroAssembler(&code); | |
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6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
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51 // note: even though the code contains an embedded value, we do not need reloc info |
| 0 | 52 // because |
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6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
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53 // (1) the value is old (i.e., doesn't matter for scavenges) |
| 0 | 54 // (2) these ICStubs are removed *before* a GC happens, so the roots disappear |
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6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
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55 // assert(cached_value == NULL || cached_oop->is_perm(), "must be perm oop"); |
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da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
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56 masm->lea(rax, AddressLiteral((address) cached_value, relocInfo::metadata_type)); |
| 0 | 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 | |
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6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
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68 void* InlineCacheBuffer::ic_buffer_cached_value(address code_begin) { |
| 0 | 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()); | |
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6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
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73 void* o = (void*)move->data(); |
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da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
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74 return o; |
| 0 | 75 } |