Mercurial > jdk8-mips64-public > hotspot / annotate
src/cpu/sparc/vm/icBuffer_sparc.cpp@f90c822e73f8 (annotated)
src/cpu/sparc/vm/icBuffer_sparc.cpp
Wed, 27 Apr 2016 01:25:04 +0800
- author
- aoqi
- date
- Wed, 27 Apr 2016 01:25:04 +0800
- changeset 0
- f90c822e73f8
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #include "precompiled.hpp" |
| aoqi@0 | 26 | #include "asm/macroAssembler.inline.hpp" |
| aoqi@0 | 27 | #include "code/icBuffer.hpp" |
| aoqi@0 | 28 | #include "gc_interface/collectedHeap.inline.hpp" |
| aoqi@0 | 29 | #include "interpreter/bytecodes.hpp" |
| aoqi@0 | 30 | #include "memory/resourceArea.hpp" |
| aoqi@0 | 31 | #include "nativeInst_sparc.hpp" |
| aoqi@0 | 32 | #include "oops/oop.inline.hpp" |
| aoqi@0 | 33 | #include "oops/oop.inline2.hpp" |
| aoqi@0 | 34 | |
| aoqi@0 | 35 | int InlineCacheBuffer::ic_stub_code_size() { |
| aoqi@0 | 36 | #ifdef _LP64 |
| aoqi@0 | 37 | if (TraceJumps) return 600 * wordSize; |
| aoqi@0 | 38 | return (NativeMovConstReg::instruction_size + // sethi;add |
| aoqi@0 | 39 | NativeJump::instruction_size + // sethi; jmp; delay slot |
| aoqi@0 | 40 | (1*BytesPerInstWord) + 1); // flush + 1 extra byte |
| aoqi@0 | 41 | #else |
| aoqi@0 | 42 | if (TraceJumps) return 300 * wordSize; |
| aoqi@0 | 43 | return (2+2+ 1) * wordSize + 1; // set/jump_to/nop + 1 byte so that code_end can be set in CodeBuffer |
| aoqi@0 | 44 | #endif |
| aoqi@0 | 45 | } |
| aoqi@0 | 46 | |
| aoqi@0 | 47 | void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point) { |
| aoqi@0 | 48 | ResourceMark rm; |
| aoqi@0 | 49 | CodeBuffer code(code_begin, ic_stub_code_size()); |
| aoqi@0 | 50 | MacroAssembler* masm = new MacroAssembler(&code); |
| aoqi@0 | 51 | // note: even though the code contains an embedded metadata, we do not need reloc info |
| aoqi@0 | 52 | // because |
| aoqi@0 | 53 | // (1) the metadata is old (i.e., doesn't matter for scavenges) |
| aoqi@0 | 54 | // (2) these ICStubs are removed *before* a GC happens, so the roots disappear |
| aoqi@0 | 55 | AddressLiteral cached_value_addrlit((address)cached_value, relocInfo::none); |
| aoqi@0 | 56 | // Force the set to generate the fixed sequence so next_instruction_address works |
| aoqi@0 | 57 | masm->patchable_set(cached_value_addrlit, G5_inline_cache_reg); |
| aoqi@0 | 58 | assert(G3_scratch != G5_method, "Do not clobber the method oop in the transition stub"); |
| aoqi@0 | 59 | assert(G3_scratch != G5_inline_cache_reg, "Do not clobber the inline cache register in the transition stub"); |
| aoqi@0 | 60 | AddressLiteral entry(entry_point); |
| aoqi@0 | 61 | masm->JUMP(entry, G3_scratch, 0); |
| aoqi@0 | 62 | masm->delayed()->nop(); |
| aoqi@0 | 63 | masm->flush(); |
| aoqi@0 | 64 | } |
| aoqi@0 | 65 | |
| aoqi@0 | 66 | |
| aoqi@0 | 67 | address InlineCacheBuffer::ic_buffer_entry_point(address code_begin) { |
| aoqi@0 | 68 | NativeMovConstReg* move = nativeMovConstReg_at(code_begin); // creation also verifies the object |
| aoqi@0 | 69 | NativeJump* jump = nativeJump_at(move->next_instruction_address()); |
| aoqi@0 | 70 | return jump->jump_destination(); |
| aoqi@0 | 71 | } |
| aoqi@0 | 72 | |
| aoqi@0 | 73 | |
| aoqi@0 | 74 | void* InlineCacheBuffer::ic_buffer_cached_value(address code_begin) { |
| aoqi@0 | 75 | NativeMovConstReg* move = nativeMovConstReg_at(code_begin); // creation also verifies the object |
| aoqi@0 | 76 | NativeJump* jump = nativeJump_at(move->next_instruction_address()); |
| aoqi@0 | 77 | void* o = (void*)move->data(); |
| aoqi@0 | 78 | return o; |
| aoqi@0 | 79 | } |
