Mercurial > hg > graal-compiler
view src/cpu/sparc/vm/icBuffer_sparc.cpp @ 10102:f2e682ef3156
8012335: G1: Fix bug with compressed oops in template interpreter on x86 and sparc.
Summary: In do_oop_store the uncompressed value of the oop being stored needs to be preserved and passed to g1_write_barrier_post. This is necessary for the heap region cross check to work correctly.
Reviewed-by: coleenp, johnc
Contributed-by: Martin Doerr <martin.doerr@sap.com>
author | johnc |
---|---|
date | Wed, 17 Apr 2013 10:57:02 -0700 |
parents | f0c2369fda5a |
children |
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/* * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "asm/macroAssembler.inline.hpp" #include "code/icBuffer.hpp" #include "gc_interface/collectedHeap.inline.hpp" #include "interpreter/bytecodes.hpp" #include "memory/resourceArea.hpp" #include "nativeInst_sparc.hpp" #include "oops/oop.inline.hpp" #include "oops/oop.inline2.hpp" int InlineCacheBuffer::ic_stub_code_size() { #ifdef _LP64 if (TraceJumps) return 600 * wordSize; return (NativeMovConstReg::instruction_size + // sethi;add NativeJump::instruction_size + // sethi; jmp; delay slot (1*BytesPerInstWord) + 1); // flush + 1 extra byte #else if (TraceJumps) return 300 * wordSize; return (2+2+ 1) * wordSize + 1; // set/jump_to/nop + 1 byte so that code_end can be set in CodeBuffer #endif } void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point) { ResourceMark rm; CodeBuffer code(code_begin, ic_stub_code_size()); MacroAssembler* masm = new MacroAssembler(&code); // note: even though the code contains an embedded metadata, we do not need reloc info // because // (1) the metadata is old (i.e., doesn't matter for scavenges) // (2) these ICStubs are removed *before* a GC happens, so the roots disappear AddressLiteral cached_value_addrlit((address)cached_value, relocInfo::none); // Force the set to generate the fixed sequence so next_instruction_address works masm->patchable_set(cached_value_addrlit, G5_inline_cache_reg); assert(G3_scratch != G5_method, "Do not clobber the method oop in the transition stub"); assert(G3_scratch != G5_inline_cache_reg, "Do not clobber the inline cache register in the transition stub"); AddressLiteral entry(entry_point); masm->JUMP(entry, G3_scratch, 0); masm->delayed()->nop(); masm->flush(); } address InlineCacheBuffer::ic_buffer_entry_point(address code_begin) { NativeMovConstReg* move = nativeMovConstReg_at(code_begin); // creation also verifies the object NativeJump* jump = nativeJump_at(move->next_instruction_address()); return jump->jump_destination(); } void* InlineCacheBuffer::ic_buffer_cached_value(address code_begin) { NativeMovConstReg* move = nativeMovConstReg_at(code_begin); // creation also verifies the object NativeJump* jump = nativeJump_at(move->next_instruction_address()); void* o = (void*)move->data(); return o; }