jdk8-mips64-public/hotspot: src/cpu/sparc/vm/icBuffer

7152957: VM crashes with assert(false) failed: bad AD file
Reviewed-by: kvn, never
Contributed-by: nils.eliasson@oracle.com

     1 /*

     2  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.

     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  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "asm/assembler.hpp"

    27 #include "assembler_sparc.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_sparc.hpp"

    33 #include "oops/oop.inline.hpp"

    34 #include "oops/oop.inline2.hpp"

    36 int InlineCacheBuffer::ic_stub_code_size() {

    37 #ifdef _LP64

    38   if (TraceJumps) return 600 * wordSize;

    39   return (NativeMovConstReg::instruction_size +  // sethi;add

    40           NativeJump::instruction_size +          // sethi; jmp; delay slot

    41           (1*BytesPerInstWord) + 1);            // flush + 1 extra byte

    42 #else

    43   if (TraceJumps) return 300 * wordSize;

    44   return (2+2+ 1) * wordSize + 1; // set/jump_to/nop + 1 byte so that code_end can be set in CodeBuffer

    45 #endif

    46 }

    48 void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, oop cached_oop, address entry_point) {

    49   ResourceMark rm;

    50   CodeBuffer     code(code_begin, ic_stub_code_size());

    51   MacroAssembler* masm            = new MacroAssembler(&code);

    52   // note: even though the code contains an embedded oop, we do not need reloc info

    53   // because

    54   // (1) the oop is old (i.e., doesn't matter for scavenges)

    55   // (2) these ICStubs are removed *before* a GC happens, so the roots disappear

    56   assert(cached_oop == NULL || cached_oop->is_perm(), "must be old oop");

    57   AddressLiteral cached_oop_addrlit(cached_oop, relocInfo::none);

    58   // Force the set to generate the fixed sequence so next_instruction_address works

    59   masm->patchable_set(cached_oop_addrlit, G5_inline_cache_reg);

    60   assert(G3_scratch != G5_method, "Do not clobber the method oop in the transition stub");

    61   assert(G3_scratch != G5_inline_cache_reg, "Do not clobber the inline cache register in the transition stub");

    62   AddressLiteral entry(entry_point);

    63   masm->JUMP(entry, G3_scratch, 0);

    64   masm->delayed()->nop();

    65   masm->flush();

    66 }

    69 address InlineCacheBuffer::ic_buffer_entry_point(address code_begin) {

    70   NativeMovConstReg* move = nativeMovConstReg_at(code_begin);   // creation also verifies the object

    71   NativeJump*        jump = nativeJump_at(move->next_instruction_address());

    72   return jump->jump_destination();

    73 }

    76 oop InlineCacheBuffer::ic_buffer_cached_oop(address code_begin) {

    77   NativeMovConstReg* move = nativeMovConstReg_at(code_begin);   // creation also verifies the object

    78   NativeJump*        jump = nativeJump_at(move->next_instruction_address());

    79   return (oop)move->data();

    80 }

src/cpu/sparc/vm/icBuffer_sparc.cpp@61b82be3b1ff