| author | chegar |
| Thu, 17 Oct 2019 20:54:25 +0100 | |
| branch | datagramsocketimpl-branch |
| changeset 58679 | 9c3209ff7550 |
| parent 58678 | 9cf78a70fa4f |
| parent 58554 | 8c3c39710a08 |
| permissions | -rw-r--r-- |
| 42065 | 1 |
/* |
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* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. |
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* Copyright (c) 2016, 2019, SAP SE. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "precompiled.hpp" |
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#include "asm/macroAssembler.inline.hpp" |
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#include "code/debugInfoRec.hpp" |
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#include "code/icBuffer.hpp" |
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#include "code/vtableStubs.hpp" |
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#include "gc/shared/gcLocker.hpp" |
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#include "interpreter/interpreter.hpp" |
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#include "interpreter/interp_masm.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "oops/compiledICHolder.hpp" |
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#include "oops/klass.inline.hpp" |
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#include "registerSaver_s390.hpp" |
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#include "runtime/safepointMechanism.hpp" |
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#include "runtime/sharedRuntime.hpp" |
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#include "runtime/vframeArray.hpp" |
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#include "utilities/align.hpp" |
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#include "vmreg_s390.inline.hpp" |
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#ifdef COMPILER1 |
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#include "c1/c1_Runtime1.hpp" |
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#endif |
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#ifdef COMPILER2 |
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#include "opto/ad.hpp" |
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#include "opto/runtime.hpp" |
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#endif |
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||
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#ifdef PRODUCT |
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#define __ masm-> |
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#else |
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#define __ (Verbose ? (masm->block_comment(FILE_AND_LINE),masm):masm)-> |
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#endif |
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#define BLOCK_COMMENT(str) __ block_comment(str) |
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#define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
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#define RegisterSaver_LiveIntReg(regname) \ |
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{ RegisterSaver::int_reg, regname->encoding(), regname->as_VMReg() }
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#define RegisterSaver_LiveFloatReg(regname) \ |
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{ RegisterSaver::float_reg, regname->encoding(), regname->as_VMReg() }
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// Registers which are not saved/restored, but still they have got a frame slot. |
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// Used to get same frame size for RegisterSaver_LiveRegs and RegisterSaver_LiveRegsWithoutR2 |
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#define RegisterSaver_ExcludedIntReg(regname) \ |
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{ RegisterSaver::excluded_reg, regname->encoding(), regname->as_VMReg() }
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// Registers which are not saved/restored, but still they have got a frame slot. |
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// Used to get same frame size for RegisterSaver_LiveRegs and RegisterSaver_LiveRegsWithoutR2. |
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#define RegisterSaver_ExcludedFloatReg(regname) \ |
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{ RegisterSaver::excluded_reg, regname->encoding(), regname->as_VMReg() }
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static const RegisterSaver::LiveRegType RegisterSaver_LiveRegs[] = {
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// Live registers which get spilled to the stack. Register positions |
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// in this array correspond directly to the stack layout. |
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// |
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// live float registers: |
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// |
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RegisterSaver_LiveFloatReg(Z_F0 ), |
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// RegisterSaver_ExcludedFloatReg(Z_F1 ), // scratch (Z_fscratch_1) |
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RegisterSaver_LiveFloatReg(Z_F2 ), |
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RegisterSaver_LiveFloatReg(Z_F3 ), |
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RegisterSaver_LiveFloatReg(Z_F4 ), |
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RegisterSaver_LiveFloatReg(Z_F5 ), |
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RegisterSaver_LiveFloatReg(Z_F6 ), |
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RegisterSaver_LiveFloatReg(Z_F7 ), |
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RegisterSaver_LiveFloatReg(Z_F8 ), |
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RegisterSaver_LiveFloatReg(Z_F9 ), |
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RegisterSaver_LiveFloatReg(Z_F10), |
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RegisterSaver_LiveFloatReg(Z_F11), |
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RegisterSaver_LiveFloatReg(Z_F12), |
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RegisterSaver_LiveFloatReg(Z_F13), |
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RegisterSaver_LiveFloatReg(Z_F14), |
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RegisterSaver_LiveFloatReg(Z_F15), |
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// |
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// RegisterSaver_ExcludedIntReg(Z_R0), // scratch |
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// RegisterSaver_ExcludedIntReg(Z_R1), // scratch |
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RegisterSaver_LiveIntReg(Z_R2 ), |
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RegisterSaver_LiveIntReg(Z_R3 ), |
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RegisterSaver_LiveIntReg(Z_R4 ), |
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RegisterSaver_LiveIntReg(Z_R5 ), |
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RegisterSaver_LiveIntReg(Z_R6 ), |
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RegisterSaver_LiveIntReg(Z_R7 ), |
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RegisterSaver_LiveIntReg(Z_R8 ), |
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RegisterSaver_LiveIntReg(Z_R9 ), |
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RegisterSaver_LiveIntReg(Z_R10), |
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RegisterSaver_LiveIntReg(Z_R11), |
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RegisterSaver_LiveIntReg(Z_R12), |
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RegisterSaver_LiveIntReg(Z_R13), |
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// RegisterSaver_ExcludedIntReg(Z_R14), // return pc (Saved in caller frame.) |
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// RegisterSaver_ExcludedIntReg(Z_R15) // stack pointer |
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}; |
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static const RegisterSaver::LiveRegType RegisterSaver_LiveIntRegs[] = {
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// Live registers which get spilled to the stack. Register positions |
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// in this array correspond directly to the stack layout. |
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// |
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// live float registers: All excluded, but still they get a stack slot to get same frame size. |
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// |
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RegisterSaver_ExcludedFloatReg(Z_F0 ), |
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// RegisterSaver_ExcludedFloatReg(Z_F1 ), // scratch (Z_fscratch_1) |
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RegisterSaver_ExcludedFloatReg(Z_F2 ), |
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RegisterSaver_ExcludedFloatReg(Z_F3 ), |
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RegisterSaver_ExcludedFloatReg(Z_F4 ), |
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RegisterSaver_ExcludedFloatReg(Z_F5 ), |
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RegisterSaver_ExcludedFloatReg(Z_F6 ), |
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RegisterSaver_ExcludedFloatReg(Z_F7 ), |
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RegisterSaver_ExcludedFloatReg(Z_F8 ), |
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RegisterSaver_ExcludedFloatReg(Z_F9 ), |
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RegisterSaver_ExcludedFloatReg(Z_F10), |
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RegisterSaver_ExcludedFloatReg(Z_F11), |
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RegisterSaver_ExcludedFloatReg(Z_F12), |
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RegisterSaver_ExcludedFloatReg(Z_F13), |
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RegisterSaver_ExcludedFloatReg(Z_F14), |
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RegisterSaver_ExcludedFloatReg(Z_F15), |
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// |
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// RegisterSaver_ExcludedIntReg(Z_R0), // scratch |
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// RegisterSaver_ExcludedIntReg(Z_R1), // scratch |
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RegisterSaver_LiveIntReg(Z_R2 ), |
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RegisterSaver_LiveIntReg(Z_R3 ), |
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RegisterSaver_LiveIntReg(Z_R4 ), |
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RegisterSaver_LiveIntReg(Z_R5 ), |
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RegisterSaver_LiveIntReg(Z_R6 ), |
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RegisterSaver_LiveIntReg(Z_R7 ), |
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RegisterSaver_LiveIntReg(Z_R8 ), |
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RegisterSaver_LiveIntReg(Z_R9 ), |
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RegisterSaver_LiveIntReg(Z_R10), |
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RegisterSaver_LiveIntReg(Z_R11), |
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RegisterSaver_LiveIntReg(Z_R12), |
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RegisterSaver_LiveIntReg(Z_R13), |
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// RegisterSaver_ExcludedIntReg(Z_R14), // return pc (Saved in caller frame.) |
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// RegisterSaver_ExcludedIntReg(Z_R15) // stack pointer |
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}; |
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static const RegisterSaver::LiveRegType RegisterSaver_LiveRegsWithoutR2[] = {
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// Live registers which get spilled to the stack. Register positions |
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// in this array correspond directly to the stack layout. |
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// |
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// live float registers: |
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// |
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RegisterSaver_LiveFloatReg(Z_F0 ), |
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// RegisterSaver_ExcludedFloatReg(Z_F1 ), // scratch (Z_fscratch_1) |
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RegisterSaver_LiveFloatReg(Z_F2 ), |
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RegisterSaver_LiveFloatReg(Z_F3 ), |
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RegisterSaver_LiveFloatReg(Z_F4 ), |
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RegisterSaver_LiveFloatReg(Z_F5 ), |
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RegisterSaver_LiveFloatReg(Z_F6 ), |
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RegisterSaver_LiveFloatReg(Z_F7 ), |
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RegisterSaver_LiveFloatReg(Z_F8 ), |
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RegisterSaver_LiveFloatReg(Z_F9 ), |
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RegisterSaver_LiveFloatReg(Z_F10), |
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RegisterSaver_LiveFloatReg(Z_F11), |
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RegisterSaver_LiveFloatReg(Z_F12), |
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RegisterSaver_LiveFloatReg(Z_F13), |
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RegisterSaver_LiveFloatReg(Z_F14), |
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RegisterSaver_LiveFloatReg(Z_F15), |
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// |
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// RegisterSaver_ExcludedIntReg(Z_R0), // scratch |
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// RegisterSaver_ExcludedIntReg(Z_R1), // scratch |
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RegisterSaver_ExcludedIntReg(Z_R2), // Omit saving R2. |
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RegisterSaver_LiveIntReg(Z_R3 ), |
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RegisterSaver_LiveIntReg(Z_R4 ), |
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RegisterSaver_LiveIntReg(Z_R5 ), |
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RegisterSaver_LiveIntReg(Z_R6 ), |
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RegisterSaver_LiveIntReg(Z_R7 ), |
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RegisterSaver_LiveIntReg(Z_R8 ), |
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RegisterSaver_LiveIntReg(Z_R9 ), |
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RegisterSaver_LiveIntReg(Z_R10), |
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RegisterSaver_LiveIntReg(Z_R11), |
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RegisterSaver_LiveIntReg(Z_R12), |
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RegisterSaver_LiveIntReg(Z_R13), |
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// RegisterSaver_ExcludedIntReg(Z_R14), // return pc (Saved in caller frame.) |
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// RegisterSaver_ExcludedIntReg(Z_R15) // stack pointer |
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}; |
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// Live argument registers which get spilled to the stack. |
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static const RegisterSaver::LiveRegType RegisterSaver_LiveArgRegs[] = {
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RegisterSaver_LiveFloatReg(Z_FARG1), |
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RegisterSaver_LiveFloatReg(Z_FARG2), |
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RegisterSaver_LiveFloatReg(Z_FARG3), |
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RegisterSaver_LiveFloatReg(Z_FARG4), |
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RegisterSaver_LiveIntReg(Z_ARG1), |
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RegisterSaver_LiveIntReg(Z_ARG2), |
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RegisterSaver_LiveIntReg(Z_ARG3), |
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RegisterSaver_LiveIntReg(Z_ARG4), |
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RegisterSaver_LiveIntReg(Z_ARG5) |
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}; |
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static const RegisterSaver::LiveRegType RegisterSaver_LiveVolatileRegs[] = {
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// Live registers which get spilled to the stack. Register positions |
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// in this array correspond directly to the stack layout. |
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// |
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// live float registers: |
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// |
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RegisterSaver_LiveFloatReg(Z_F0 ), |
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// RegisterSaver_ExcludedFloatReg(Z_F1 ), // scratch (Z_fscratch_1) |
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RegisterSaver_LiveFloatReg(Z_F2 ), |
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RegisterSaver_LiveFloatReg(Z_F3 ), |
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RegisterSaver_LiveFloatReg(Z_F4 ), |
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RegisterSaver_LiveFloatReg(Z_F5 ), |
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RegisterSaver_LiveFloatReg(Z_F6 ), |
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RegisterSaver_LiveFloatReg(Z_F7 ), |
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// RegisterSaver_LiveFloatReg(Z_F8 ), // non-volatile |
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// RegisterSaver_LiveFloatReg(Z_F9 ), // non-volatile |
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// RegisterSaver_LiveFloatReg(Z_F10), // non-volatile |
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// RegisterSaver_LiveFloatReg(Z_F11), // non-volatile |
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// RegisterSaver_LiveFloatReg(Z_F12), // non-volatile |
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// RegisterSaver_LiveFloatReg(Z_F13), // non-volatile |
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// RegisterSaver_LiveFloatReg(Z_F14), // non-volatile |
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// RegisterSaver_LiveFloatReg(Z_F15), // non-volatile |
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// |
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// RegisterSaver_ExcludedIntReg(Z_R0), // scratch |
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// RegisterSaver_ExcludedIntReg(Z_R1), // scratch |
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RegisterSaver_LiveIntReg(Z_R2 ), |
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RegisterSaver_LiveIntReg(Z_R3 ), |
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RegisterSaver_LiveIntReg(Z_R4 ), |
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RegisterSaver_LiveIntReg(Z_R5 ), |
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// RegisterSaver_LiveIntReg(Z_R6 ), // non-volatile |
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// RegisterSaver_LiveIntReg(Z_R7 ), // non-volatile |
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// RegisterSaver_LiveIntReg(Z_R8 ), // non-volatile |
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// RegisterSaver_LiveIntReg(Z_R9 ), // non-volatile |
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// RegisterSaver_LiveIntReg(Z_R10), // non-volatile |
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// RegisterSaver_LiveIntReg(Z_R11), // non-volatile |
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// RegisterSaver_LiveIntReg(Z_R12), // non-volatile |
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// RegisterSaver_LiveIntReg(Z_R13), // non-volatile |
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// RegisterSaver_ExcludedIntReg(Z_R14), // return pc (Saved in caller frame.) |
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// RegisterSaver_ExcludedIntReg(Z_R15) // stack pointer |
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}; |
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252 |
||
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int RegisterSaver::live_reg_save_size(RegisterSet reg_set) {
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int reg_space = -1; |
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switch (reg_set) {
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case all_registers: reg_space = sizeof(RegisterSaver_LiveRegs); break; |
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case all_registers_except_r2: reg_space = sizeof(RegisterSaver_LiveRegsWithoutR2); break; |
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case all_integer_registers: reg_space = sizeof(RegisterSaver_LiveIntRegs); break; |
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case all_volatile_registers: reg_space = sizeof(RegisterSaver_LiveVolatileRegs); break; |
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case arg_registers: reg_space = sizeof(RegisterSaver_LiveArgRegs); break; |
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default: ShouldNotReachHere(); |
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262 |
} |
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return (reg_space / sizeof(RegisterSaver::LiveRegType)) * reg_size; |
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} |
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||
266 |
||
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int RegisterSaver::live_reg_frame_size(RegisterSet reg_set) {
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return live_reg_save_size(reg_set) + frame::z_abi_160_size; |
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} |
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270 |
||
271 |
||
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// return_pc: Specify the register that should be stored as the return pc in the current frame. |
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OopMap* RegisterSaver::save_live_registers(MacroAssembler* masm, RegisterSet reg_set, Register return_pc) {
|
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// Record volatile registers as callee-save values in an OopMap so |
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// their save locations will be propagated to the caller frame's |
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// RegisterMap during StackFrameStream construction (needed for |
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// deoptimization; see compiledVFrame::create_stack_value). |
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278 |
||
279 |
// Calculate frame size. |
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const int frame_size_in_bytes = live_reg_frame_size(reg_set); |
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const int frame_size_in_slots = frame_size_in_bytes / sizeof(jint); |
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const int register_save_offset = frame_size_in_bytes - live_reg_save_size(reg_set); |
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283 |
||
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// OopMap frame size is in c2 stack slots (sizeof(jint)) not bytes or words. |
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OopMap* map = new OopMap(frame_size_in_slots, 0); |
|
286 |
||
287 |
int regstosave_num = 0; |
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const RegisterSaver::LiveRegType* live_regs = NULL; |
|
289 |
||
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switch (reg_set) {
|
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case all_registers: |
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regstosave_num = sizeof(RegisterSaver_LiveRegs)/sizeof(RegisterSaver::LiveRegType); |
|
293 |
live_regs = RegisterSaver_LiveRegs; |
|
294 |
break; |
|
295 |
case all_registers_except_r2: |
|
296 |
regstosave_num = sizeof(RegisterSaver_LiveRegsWithoutR2)/sizeof(RegisterSaver::LiveRegType);; |
|
297 |
live_regs = RegisterSaver_LiveRegsWithoutR2; |
|
298 |
break; |
|
299 |
case all_integer_registers: |
|
300 |
regstosave_num = sizeof(RegisterSaver_LiveIntRegs)/sizeof(RegisterSaver::LiveRegType); |
|
301 |
live_regs = RegisterSaver_LiveIntRegs; |
|
302 |
break; |
|
303 |
case all_volatile_registers: |
|
304 |
regstosave_num = sizeof(RegisterSaver_LiveVolatileRegs)/sizeof(RegisterSaver::LiveRegType); |
|
305 |
live_regs = RegisterSaver_LiveVolatileRegs; |
|
306 |
break; |
|
307 |
case arg_registers: |
|
308 |
regstosave_num = sizeof(RegisterSaver_LiveArgRegs)/sizeof(RegisterSaver::LiveRegType);; |
|
309 |
live_regs = RegisterSaver_LiveArgRegs; |
|
310 |
break; |
|
311 |
default: ShouldNotReachHere(); |
|
312 |
} |
|
313 |
||
314 |
// Save return pc in old frame. |
|
315 |
__ save_return_pc(return_pc); |
|
316 |
||
317 |
// Push a new frame (includes stack linkage). |
|
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// Use return_pc as scratch for push_frame. Z_R0_scratch (the default) and Z_R1_scratch are |
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// illegally used to pass parameters by RangeCheckStub::emit_code(). |
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__ push_frame(frame_size_in_bytes, return_pc); |
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// We have to restore return_pc right away. |
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// Nobody else will. Furthermore, return_pc isn't necessarily the default (Z_R14). |
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// Nobody else knows which register we saved. |
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8180659: [s390] micro-optimization in resize_frame_absolute()
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changeset
|
324 |
__ z_lg(return_pc, _z_abi16(return_pc) + frame_size_in_bytes, Z_SP); |
| 42065 | 325 |
|
326 |
// Register save area in new frame starts above z_abi_160 area. |
|
327 |
int offset = register_save_offset; |
|
328 |
||
329 |
Register first = noreg; |
|
330 |
Register last = noreg; |
|
331 |
int first_offset = -1; |
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332 |
bool float_spilled = false; |
|
333 |
||
334 |
for (int i = 0; i < regstosave_num; i++, offset += reg_size) {
|
|
335 |
int reg_num = live_regs[i].reg_num; |
|
336 |
int reg_type = live_regs[i].reg_type; |
|
337 |
||
338 |
switch (reg_type) {
|
|
339 |
case RegisterSaver::int_reg: {
|
|
340 |
Register reg = as_Register(reg_num); |
|
341 |
if (last != reg->predecessor()) {
|
|
342 |
if (first != noreg) {
|
|
343 |
__ z_stmg(first, last, first_offset, Z_SP); |
|
344 |
} |
|
345 |
first = reg; |
|
346 |
first_offset = offset; |
|
347 |
DEBUG_ONLY(float_spilled = false); |
|
348 |
} |
|
349 |
last = reg; |
|
350 |
assert(last != Z_R0, "r0 would require special treatment"); |
|
351 |
assert(!float_spilled, "for simplicity, do not mix up ints and floats in RegisterSaver_LiveRegs[]"); |
|
352 |
break; |
|
353 |
} |
|
354 |
||
355 |
case RegisterSaver::excluded_reg: // Not saved/restored, but with dedicated slot. |
|
356 |
continue; // Continue with next loop iteration. |
|
357 |
||
358 |
case RegisterSaver::float_reg: {
|
|
359 |
FloatRegister freg = as_FloatRegister(reg_num); |
|
360 |
__ z_std(freg, offset, Z_SP); |
|
361 |
DEBUG_ONLY(float_spilled = true); |
|
362 |
break; |
|
363 |
} |
|
364 |
||
365 |
default: |
|
366 |
ShouldNotReachHere(); |
|
367 |
break; |
|
368 |
} |
|
369 |
||
370 |
// Second set_callee_saved is really a waste but we'll keep things as they were for now |
|
371 |
map->set_callee_saved(VMRegImpl::stack2reg(offset >> 2), live_regs[i].vmreg); |
|
372 |
map->set_callee_saved(VMRegImpl::stack2reg((offset + half_reg_size) >> 2), live_regs[i].vmreg->next()); |
|
373 |
} |
|
374 |
assert(first != noreg, "Should spill at least one int reg."); |
|
375 |
__ z_stmg(first, last, first_offset, Z_SP); |
|
376 |
||
377 |
// And we're done. |
|
378 |
return map; |
|
379 |
} |
|
380 |
||
381 |
||
382 |
// Generate the OopMap (again, regs where saved before). |
|
383 |
OopMap* RegisterSaver::generate_oop_map(MacroAssembler* masm, RegisterSet reg_set) {
|
|
384 |
// Calculate frame size. |
|
385 |
const int frame_size_in_bytes = live_reg_frame_size(reg_set); |
|
386 |
const int frame_size_in_slots = frame_size_in_bytes / sizeof(jint); |
|
387 |
const int register_save_offset = frame_size_in_bytes - live_reg_save_size(reg_set); |
|
388 |
||
389 |
// OopMap frame size is in c2 stack slots (sizeof(jint)) not bytes or words. |
|
390 |
OopMap* map = new OopMap(frame_size_in_slots, 0); |
|
391 |
||
392 |
int regstosave_num = 0; |
|
393 |
const RegisterSaver::LiveRegType* live_regs = NULL; |
|
394 |
||
395 |
switch (reg_set) {
|
|
396 |
case all_registers: |
|
397 |
regstosave_num = sizeof(RegisterSaver_LiveRegs)/sizeof(RegisterSaver::LiveRegType); |
|
398 |
live_regs = RegisterSaver_LiveRegs; |
|
399 |
break; |
|
400 |
case all_registers_except_r2: |
|
401 |
regstosave_num = sizeof(RegisterSaver_LiveRegsWithoutR2)/sizeof(RegisterSaver::LiveRegType);; |
|
402 |
live_regs = RegisterSaver_LiveRegsWithoutR2; |
|
403 |
break; |
|
404 |
case all_integer_registers: |
|
405 |
regstosave_num = sizeof(RegisterSaver_LiveIntRegs)/sizeof(RegisterSaver::LiveRegType); |
|
406 |
live_regs = RegisterSaver_LiveIntRegs; |
|
407 |
break; |
|
408 |
case all_volatile_registers: |
|
409 |
regstosave_num = sizeof(RegisterSaver_LiveVolatileRegs)/sizeof(RegisterSaver::LiveRegType); |
|
410 |
live_regs = RegisterSaver_LiveVolatileRegs; |
|
411 |
break; |
|
412 |
case arg_registers: |
|
413 |
regstosave_num = sizeof(RegisterSaver_LiveArgRegs)/sizeof(RegisterSaver::LiveRegType);; |
|
414 |
live_regs = RegisterSaver_LiveArgRegs; |
|
415 |
break; |
|
416 |
default: ShouldNotReachHere(); |
|
417 |
} |
|
418 |
||
419 |
// Register save area in new frame starts above z_abi_160 area. |
|
420 |
int offset = register_save_offset; |
|
421 |
for (int i = 0; i < regstosave_num; i++) {
|
|
422 |
if (live_regs[i].reg_type < RegisterSaver::excluded_reg) {
|
|
423 |
map->set_callee_saved(VMRegImpl::stack2reg(offset>>2), live_regs[i].vmreg); |
|
424 |
map->set_callee_saved(VMRegImpl::stack2reg((offset + half_reg_size)>>2), live_regs[i].vmreg->next()); |
|
425 |
} |
|
426 |
offset += reg_size; |
|
427 |
} |
|
428 |
return map; |
|
429 |
} |
|
430 |
||
431 |
||
432 |
// Pop the current frame and restore all the registers that we saved. |
|
433 |
void RegisterSaver::restore_live_registers(MacroAssembler* masm, RegisterSet reg_set) {
|
|
434 |
int offset; |
|
435 |
const int register_save_offset = live_reg_frame_size(reg_set) - live_reg_save_size(reg_set); |
|
436 |
||
437 |
Register first = noreg; |
|
438 |
Register last = noreg; |
|
439 |
int first_offset = -1; |
|
440 |
bool float_spilled = false; |
|
441 |
||
442 |
int regstosave_num = 0; |
|
443 |
const RegisterSaver::LiveRegType* live_regs = NULL; |
|
444 |
||
445 |
switch (reg_set) {
|
|
446 |
case all_registers: |
|
447 |
regstosave_num = sizeof(RegisterSaver_LiveRegs)/sizeof(RegisterSaver::LiveRegType);; |
|
448 |
live_regs = RegisterSaver_LiveRegs; |
|
449 |
break; |
|
450 |
case all_registers_except_r2: |
|
451 |
regstosave_num = sizeof(RegisterSaver_LiveRegsWithoutR2)/sizeof(RegisterSaver::LiveRegType);; |
|
452 |
live_regs = RegisterSaver_LiveRegsWithoutR2; |
|
453 |
break; |
|
454 |
case all_integer_registers: |
|
455 |
regstosave_num = sizeof(RegisterSaver_LiveIntRegs)/sizeof(RegisterSaver::LiveRegType); |
|
456 |
live_regs = RegisterSaver_LiveIntRegs; |
|
457 |
break; |
|
458 |
case all_volatile_registers: |
|
459 |
regstosave_num = sizeof(RegisterSaver_LiveVolatileRegs)/sizeof(RegisterSaver::LiveRegType);; |
|
460 |
live_regs = RegisterSaver_LiveVolatileRegs; |
|
461 |
break; |
|
462 |
case arg_registers: |
|
463 |
regstosave_num = sizeof(RegisterSaver_LiveArgRegs)/sizeof(RegisterSaver::LiveRegType);; |
|
464 |
live_regs = RegisterSaver_LiveArgRegs; |
|
465 |
break; |
|
466 |
default: ShouldNotReachHere(); |
|
467 |
} |
|
468 |
||
469 |
// Restore all registers (ints and floats). |
|
470 |
||
471 |
// Register save area in new frame starts above z_abi_160 area. |
|
472 |
offset = register_save_offset; |
|
473 |
||
474 |
for (int i = 0; i < regstosave_num; i++, offset += reg_size) {
|
|
475 |
int reg_num = live_regs[i].reg_num; |
|
476 |
int reg_type = live_regs[i].reg_type; |
|
477 |
||
478 |
switch (reg_type) {
|
|
479 |
case RegisterSaver::excluded_reg: |
|
480 |
continue; // Continue with next loop iteration. |
|
481 |
||
482 |
case RegisterSaver::int_reg: {
|
|
483 |
Register reg = as_Register(reg_num); |
|
484 |
if (last != reg->predecessor()) {
|
|
485 |
if (first != noreg) {
|
|
486 |
__ z_lmg(first, last, first_offset, Z_SP); |
|
487 |
} |
|
488 |
first = reg; |
|
489 |
first_offset = offset; |
|
490 |
DEBUG_ONLY(float_spilled = false); |
|
491 |
} |
|
492 |
last = reg; |
|
493 |
assert(last != Z_R0, "r0 would require special treatment"); |
|
494 |
assert(!float_spilled, "for simplicity, do not mix up ints and floats in RegisterSaver_LiveRegs[]"); |
|
495 |
break; |
|
496 |
} |
|
497 |
||
498 |
case RegisterSaver::float_reg: {
|
|
499 |
FloatRegister freg = as_FloatRegister(reg_num); |
|
500 |
__ z_ld(freg, offset, Z_SP); |
|
501 |
DEBUG_ONLY(float_spilled = true); |
|
502 |
break; |
|
503 |
} |
|
504 |
||
505 |
default: |
|
506 |
ShouldNotReachHere(); |
|
507 |
} |
|
508 |
} |
|
509 |
assert(first != noreg, "Should spill at least one int reg."); |
|
510 |
__ z_lmg(first, last, first_offset, Z_SP); |
|
511 |
||
512 |
// Pop the frame. |
|
513 |
__ pop_frame(); |
|
514 |
||
515 |
// Restore the flags. |
|
516 |
__ restore_return_pc(); |
|
517 |
} |
|
518 |
||
519 |
||
520 |
// Pop the current frame and restore the registers that might be holding a result. |
|
521 |
void RegisterSaver::restore_result_registers(MacroAssembler* masm) {
|
|
522 |
int i; |
|
523 |
int offset; |
|
524 |
const int regstosave_num = sizeof(RegisterSaver_LiveRegs) / |
|
525 |
sizeof(RegisterSaver::LiveRegType); |
|
526 |
const int register_save_offset = live_reg_frame_size(all_registers) - live_reg_save_size(all_registers); |
|
527 |
||
528 |
// Restore all result registers (ints and floats). |
|
529 |
offset = register_save_offset; |
|
530 |
for (int i = 0; i < regstosave_num; i++, offset += reg_size) {
|
|
531 |
int reg_num = RegisterSaver_LiveRegs[i].reg_num; |
|
532 |
int reg_type = RegisterSaver_LiveRegs[i].reg_type; |
|
533 |
switch (reg_type) {
|
|
534 |
case RegisterSaver::excluded_reg: |
|
535 |
continue; // Continue with next loop iteration. |
|
536 |
case RegisterSaver::int_reg: {
|
|
537 |
if (as_Register(reg_num) == Z_RET) { // int result_reg
|
|
538 |
__ z_lg(as_Register(reg_num), offset, Z_SP); |
|
539 |
} |
|
540 |
break; |
|
541 |
} |
|
542 |
case RegisterSaver::float_reg: {
|
|
543 |
if (as_FloatRegister(reg_num) == Z_FRET) { // float result_reg
|
|
544 |
__ z_ld(as_FloatRegister(reg_num), offset, Z_SP); |
|
545 |
} |
|
546 |
break; |
|
547 |
} |
|
548 |
default: |
|
549 |
ShouldNotReachHere(); |
|
550 |
} |
|
551 |
} |
|
552 |
} |
|
553 |
||
554 |
size_t SharedRuntime::trampoline_size() {
|
|
555 |
return MacroAssembler::load_const_size() + 2; |
|
556 |
} |
|
557 |
||
558 |
void SharedRuntime::generate_trampoline(MacroAssembler *masm, address destination) {
|
|
559 |
// Think about using pc-relative branch. |
|
560 |
__ load_const(Z_R1_scratch, destination); |
|
561 |
__ z_br(Z_R1_scratch); |
|
562 |
} |
|
563 |
||
564 |
// --------------------------------------------------------------------------- |
|
565 |
void SharedRuntime::save_native_result(MacroAssembler * masm, |
|
566 |
BasicType ret_type, |
|
567 |
int frame_slots) {
|
|
568 |
Address memaddr(Z_SP, frame_slots * VMRegImpl::stack_slot_size); |
|
569 |
||
570 |
switch (ret_type) {
|
|
571 |
case T_BOOLEAN: // Save shorter types as int. Do we need sign extension at restore?? |
|
572 |
case T_BYTE: |
|
573 |
case T_CHAR: |
|
574 |
case T_SHORT: |
|
575 |
case T_INT: |
|
576 |
__ reg2mem_opt(Z_RET, memaddr, false); |
|
577 |
break; |
|
578 |
case T_OBJECT: // Save pointer types as long. |
|
579 |
case T_ARRAY: |
|
580 |
case T_ADDRESS: |
|
581 |
case T_VOID: |
|
582 |
case T_LONG: |
|
583 |
__ reg2mem_opt(Z_RET, memaddr); |
|
584 |
break; |
|
585 |
case T_FLOAT: |
|
586 |
__ freg2mem_opt(Z_FRET, memaddr, false); |
|
587 |
break; |
|
588 |
case T_DOUBLE: |
|
589 |
__ freg2mem_opt(Z_FRET, memaddr); |
|
590 |
break; |
|
|
51966
2a2a78bd1fc3
8211145: [ppc] [s390]: Build fails due to -Werror=switch (introduced with JDK-8211029)
lucy
parents:
50094
diff
changeset
|
591 |
default: |
|
2a2a78bd1fc3
8211145: [ppc] [s390]: Build fails due to -Werror=switch (introduced with JDK-8211029)
lucy
parents:
50094
diff
changeset
|
592 |
ShouldNotReachHere(); |
|
2a2a78bd1fc3
8211145: [ppc] [s390]: Build fails due to -Werror=switch (introduced with JDK-8211029)
lucy
parents:
50094
diff
changeset
|
593 |
break; |
| 42065 | 594 |
} |
595 |
} |
|
596 |
||
597 |
void SharedRuntime::restore_native_result(MacroAssembler *masm, |
|
598 |
BasicType ret_type, |
|
599 |
int frame_slots) {
|
|
600 |
Address memaddr(Z_SP, frame_slots * VMRegImpl::stack_slot_size); |
|
601 |
||
602 |
switch (ret_type) {
|
|
603 |
case T_BOOLEAN: // Restore shorter types as int. Do we need sign extension at restore?? |
|
604 |
case T_BYTE: |
|
605 |
case T_CHAR: |
|
606 |
case T_SHORT: |
|
607 |
case T_INT: |
|
608 |
__ mem2reg_opt(Z_RET, memaddr, false); |
|
609 |
break; |
|
610 |
case T_OBJECT: // Restore pointer types as long. |
|
611 |
case T_ARRAY: |
|
612 |
case T_ADDRESS: |
|
613 |
case T_VOID: |
|
614 |
case T_LONG: |
|
615 |
__ mem2reg_opt(Z_RET, memaddr); |
|
616 |
break; |
|
617 |
case T_FLOAT: |
|
618 |
__ mem2freg_opt(Z_FRET, memaddr, false); |
|
619 |
break; |
|
620 |
case T_DOUBLE: |
|
621 |
__ mem2freg_opt(Z_FRET, memaddr); |
|
622 |
break; |
|
|
51966
2a2a78bd1fc3
8211145: [ppc] [s390]: Build fails due to -Werror=switch (introduced with JDK-8211029)
lucy
parents:
50094
diff
changeset
|
623 |
default: |
|
2a2a78bd1fc3
8211145: [ppc] [s390]: Build fails due to -Werror=switch (introduced with JDK-8211029)
lucy
parents:
50094
diff
changeset
|
624 |
ShouldNotReachHere(); |
|
2a2a78bd1fc3
8211145: [ppc] [s390]: Build fails due to -Werror=switch (introduced with JDK-8211029)
lucy
parents:
50094
diff
changeset
|
625 |
break; |
| 42065 | 626 |
} |
627 |
} |
|
628 |
||
629 |
// --------------------------------------------------------------------------- |
|
630 |
// Read the array of BasicTypes from a signature, and compute where the |
|
631 |
// arguments should go. Values in the VMRegPair regs array refer to 4-byte |
|
632 |
// quantities. Values less than VMRegImpl::stack0 are registers, those above |
|
633 |
// refer to 4-byte stack slots. All stack slots are based off of the stack pointer |
|
634 |
// as framesizes are fixed. |
|
635 |
// VMRegImpl::stack0 refers to the first slot 0(sp). |
|
636 |
// VMRegImpl::stack0+1 refers to the memory word 4-byes higher. Registers |
|
637 |
// up to RegisterImpl::number_of_registers are the 64-bit integer registers. |
|
638 |
||
639 |
// Note: the INPUTS in sig_bt are in units of Java argument words, which are |
|
640 |
// either 32-bit or 64-bit depending on the build. The OUTPUTS are in 32-bit |
|
641 |
// units regardless of build. |
|
642 |
||
643 |
// The Java calling convention is a "shifted" version of the C ABI. |
|
644 |
// By skipping the first C ABI register we can call non-static jni methods |
|
645 |
// with small numbers of arguments without having to shuffle the arguments |
|
646 |
// at all. Since we control the java ABI we ought to at least get some |
|
647 |
// advantage out of it. |
|
648 |
int SharedRuntime::java_calling_convention(const BasicType *sig_bt, |
|
649 |
VMRegPair *regs, |
|
650 |
int total_args_passed, |
|
651 |
int is_outgoing) {
|
|
652 |
// c2c calling conventions for compiled-compiled calls. |
|
653 |
||
654 |
// An int/float occupies 1 slot here. |
|
655 |
const int inc_stk_for_intfloat = 1; // 1 slots for ints and floats. |
|
656 |
const int inc_stk_for_longdouble = 2; // 2 slots for longs and doubles. |
|
657 |
||
658 |
const VMReg z_iarg_reg[5] = {
|
|
659 |
Z_R2->as_VMReg(), |
|
660 |
Z_R3->as_VMReg(), |
|
661 |
Z_R4->as_VMReg(), |
|
662 |
Z_R5->as_VMReg(), |
|
663 |
Z_R6->as_VMReg() |
|
664 |
}; |
|
665 |
const VMReg z_farg_reg[4] = {
|
|
666 |
Z_F0->as_VMReg(), |
|
667 |
Z_F2->as_VMReg(), |
|
668 |
Z_F4->as_VMReg(), |
|
669 |
Z_F6->as_VMReg() |
|
670 |
}; |
|
671 |
const int z_num_iarg_registers = sizeof(z_iarg_reg) / sizeof(z_iarg_reg[0]); |
|
672 |
const int z_num_farg_registers = sizeof(z_farg_reg) / sizeof(z_farg_reg[0]); |
|
673 |
||
674 |
assert(RegisterImpl::number_of_arg_registers == z_num_iarg_registers, "iarg reg count mismatch"); |
|
675 |
assert(FloatRegisterImpl::number_of_arg_registers == z_num_farg_registers, "farg reg count mismatch"); |
|
676 |
||
677 |
int i; |
|
678 |
int stk = 0; |
|
679 |
int ireg = 0; |
|
680 |
int freg = 0; |
|
681 |
||
682 |
for (int i = 0; i < total_args_passed; ++i) {
|
|
683 |
switch (sig_bt[i]) {
|
|
684 |
case T_BOOLEAN: |
|
685 |
case T_CHAR: |
|
686 |
case T_BYTE: |
|
687 |
case T_SHORT: |
|
688 |
case T_INT: |
|
689 |
if (ireg < z_num_iarg_registers) {
|
|
690 |
// Put int/ptr in register. |
|
691 |
regs[i].set1(z_iarg_reg[ireg]); |
|
692 |
++ireg; |
|
693 |
} else {
|
|
694 |
// Put int/ptr on stack. |
|
695 |
regs[i].set1(VMRegImpl::stack2reg(stk)); |
|
696 |
stk += inc_stk_for_intfloat; |
|
697 |
} |
|
698 |
break; |
|
699 |
case T_LONG: |
|
|
42874
973960866fa4
8170761: Buffer overrun in sharedRuntime_x86_64.cpp:477
jcm
parents:
42065
diff
changeset
|
700 |
assert((i + 1) < total_args_passed && sig_bt[i+1] == T_VOID, "expecting half"); |
| 42065 | 701 |
if (ireg < z_num_iarg_registers) {
|
702 |
// Put long in register. |
|
703 |
regs[i].set2(z_iarg_reg[ireg]); |
|
704 |
++ireg; |
|
705 |
} else {
|
|
706 |
// Put long on stack and align to 2 slots. |
|
707 |
if (stk & 0x1) { ++stk; }
|
|
708 |
regs[i].set2(VMRegImpl::stack2reg(stk)); |
|
709 |
stk += inc_stk_for_longdouble; |
|
710 |
} |
|
711 |
break; |
|
712 |
case T_OBJECT: |
|
713 |
case T_ARRAY: |
|
714 |
case T_ADDRESS: |
|
715 |
if (ireg < z_num_iarg_registers) {
|
|
716 |
// Put ptr in register. |
|
717 |
regs[i].set2(z_iarg_reg[ireg]); |
|
718 |
++ireg; |
|
719 |
} else {
|
|
720 |
// Put ptr on stack and align to 2 slots, because |
|
721 |
// "64-bit pointers record oop-ishness on 2 aligned adjacent |
|
722 |
// registers." (see OopFlow::build_oop_map). |
|
723 |
if (stk & 0x1) { ++stk; }
|
|
724 |
regs[i].set2(VMRegImpl::stack2reg(stk)); |
|
725 |
stk += inc_stk_for_longdouble; |
|
726 |
} |
|
727 |
break; |
|
728 |
case T_FLOAT: |
|
729 |
if (freg < z_num_farg_registers) {
|
|
730 |
// Put float in register. |
|
731 |
regs[i].set1(z_farg_reg[freg]); |
|
732 |
++freg; |
|
733 |
} else {
|
|
734 |
// Put float on stack. |
|
735 |
regs[i].set1(VMRegImpl::stack2reg(stk)); |
|
736 |
stk += inc_stk_for_intfloat; |
|
737 |
} |
|
738 |
break; |
|
739 |
case T_DOUBLE: |
|
|
42874
973960866fa4
8170761: Buffer overrun in sharedRuntime_x86_64.cpp:477
jcm
parents:
42065
diff
changeset
|
740 |
assert((i + 1) < total_args_passed && sig_bt[i+1] == T_VOID, "expecting half"); |
| 42065 | 741 |
if (freg < z_num_farg_registers) {
|
742 |
// Put double in register. |
|
743 |
regs[i].set2(z_farg_reg[freg]); |
|
744 |
++freg; |
|
745 |
} else {
|
|
746 |
// Put double on stack and align to 2 slots. |
|
747 |
if (stk & 0x1) { ++stk; }
|
|
748 |
regs[i].set2(VMRegImpl::stack2reg(stk)); |
|
749 |
stk += inc_stk_for_longdouble; |
|
750 |
} |
|
751 |
break; |
|
752 |
case T_VOID: |
|
753 |
assert(i != 0 && (sig_bt[i - 1] == T_LONG || sig_bt[i - 1] == T_DOUBLE), "expecting half"); |
|
754 |
// Do not count halves. |
|
755 |
regs[i].set_bad(); |
|
756 |
break; |
|
757 |
default: |
|
758 |
ShouldNotReachHere(); |
|
759 |
} |
|
760 |
} |
|
|
46620
750c6edff33b
8178500: Replace usages of round_to and round_down with align_up and align_down
stefank
parents:
44406
diff
changeset
|
761 |
return align_up(stk, 2); |
| 42065 | 762 |
} |
763 |
||
764 |
int SharedRuntime::c_calling_convention(const BasicType *sig_bt, |
|
765 |
VMRegPair *regs, |
|
766 |
VMRegPair *regs2, |
|
767 |
int total_args_passed) {
|
|
768 |
assert(regs2 == NULL, "second VMRegPair array not used on this platform"); |
|
769 |
||
770 |
// Calling conventions for C runtime calls and calls to JNI native methods. |
|
771 |
const VMReg z_iarg_reg[5] = {
|
|
772 |
Z_R2->as_VMReg(), |
|
773 |
Z_R3->as_VMReg(), |
|
774 |
Z_R4->as_VMReg(), |
|
775 |
Z_R5->as_VMReg(), |
|
776 |
Z_R6->as_VMReg() |
|
777 |
}; |
|
778 |
const VMReg z_farg_reg[4] = {
|
|
779 |
Z_F0->as_VMReg(), |
|
780 |
Z_F2->as_VMReg(), |
|
781 |
Z_F4->as_VMReg(), |
|
782 |
Z_F6->as_VMReg() |
|
783 |
}; |
|
784 |
const int z_num_iarg_registers = sizeof(z_iarg_reg) / sizeof(z_iarg_reg[0]); |
|
785 |
const int z_num_farg_registers = sizeof(z_farg_reg) / sizeof(z_farg_reg[0]); |
|
786 |
||
787 |
// Check calling conventions consistency. |
|
788 |
assert(RegisterImpl::number_of_arg_registers == z_num_iarg_registers, "iarg reg count mismatch"); |
|
789 |
assert(FloatRegisterImpl::number_of_arg_registers == z_num_farg_registers, "farg reg count mismatch"); |
|
790 |
||
791 |
// Avoid passing C arguments in the wrong stack slots. |
|
792 |
||
793 |
// 'Stk' counts stack slots. Due to alignment, 32 bit values occupy |
|
794 |
// 2 such slots, like 64 bit values do. |
|
795 |
const int inc_stk_for_intfloat = 2; // 2 slots for ints and floats. |
|
796 |
const int inc_stk_for_longdouble = 2; // 2 slots for longs and doubles. |
|
797 |
||
798 |
int i; |
|
799 |
// Leave room for C-compatible ABI |
|
800 |
int stk = (frame::z_abi_160_size - frame::z_jit_out_preserve_size) / VMRegImpl::stack_slot_size; |
|
801 |
int freg = 0; |
|
802 |
int ireg = 0; |
|
803 |
||
804 |
// We put the first 5 arguments into registers and the rest on the |
|
805 |
// stack. Float arguments are already in their argument registers |
|
806 |
// due to c2c calling conventions (see calling_convention). |
|
807 |
for (int i = 0; i < total_args_passed; ++i) {
|
|
808 |
switch (sig_bt[i]) {
|
|
809 |
case T_BOOLEAN: |
|
810 |
case T_CHAR: |
|
811 |
case T_BYTE: |
|
812 |
case T_SHORT: |
|
813 |
case T_INT: |
|
814 |
// Fall through, handle as long. |
|
815 |
case T_LONG: |
|
816 |
case T_OBJECT: |
|
817 |
case T_ARRAY: |
|
818 |
case T_ADDRESS: |
|
819 |
case T_METADATA: |
|
820 |
// Oops are already boxed if required (JNI). |
|
821 |
if (ireg < z_num_iarg_registers) {
|
|
822 |
regs[i].set2(z_iarg_reg[ireg]); |
|
823 |
++ireg; |
|
824 |
} else {
|
|
825 |
regs[i].set2(VMRegImpl::stack2reg(stk)); |
|
826 |
stk += inc_stk_for_longdouble; |
|
827 |
} |
|
828 |
break; |
|
829 |
case T_FLOAT: |
|
830 |
if (freg < z_num_farg_registers) {
|
|
831 |
regs[i].set1(z_farg_reg[freg]); |
|
832 |
++freg; |
|
833 |
} else {
|
|
834 |
regs[i].set1(VMRegImpl::stack2reg(stk+1)); |
|
835 |
stk += inc_stk_for_intfloat; |
|
836 |
} |
|
837 |
break; |
|
838 |
case T_DOUBLE: |
|
|
42874
973960866fa4
8170761: Buffer overrun in sharedRuntime_x86_64.cpp:477
jcm
parents:
42065
diff
changeset
|
839 |
assert((i + 1) < total_args_passed && sig_bt[i+1] == T_VOID, "expecting half"); |
| 42065 | 840 |
if (freg < z_num_farg_registers) {
|
841 |
regs[i].set2(z_farg_reg[freg]); |
|
842 |
++freg; |
|
843 |
} else {
|
|
844 |
// Put double on stack. |
|
845 |
regs[i].set2(VMRegImpl::stack2reg(stk)); |
|
846 |
stk += inc_stk_for_longdouble; |
|
847 |
} |
|
848 |
break; |
|
849 |
case T_VOID: |
|
850 |
// Do not count halves. |
|
851 |
regs[i].set_bad(); |
|
852 |
break; |
|
853 |
default: |
|
854 |
ShouldNotReachHere(); |
|
855 |
} |
|
856 |
} |
|
|
46620
750c6edff33b
8178500: Replace usages of round_to and round_down with align_up and align_down
stefank
parents:
44406
diff
changeset
|
857 |
return align_up(stk, 2); |
| 42065 | 858 |
} |
859 |
||
860 |
//////////////////////////////////////////////////////////////////////// |
|
861 |
// |
|
862 |
// Argument shufflers |
|
863 |
// |
|
864 |
//////////////////////////////////////////////////////////////////////// |
|
865 |
||
866 |
//---------------------------------------------------------------------- |
|
867 |
// The java_calling_convention describes stack locations as ideal slots on |
|
868 |
// a frame with no abi restrictions. Since we must observe abi restrictions |
|
869 |
// (like the placement of the register window) the slots must be biased by |
|
870 |
// the following value. |
|
871 |
//---------------------------------------------------------------------- |
|
872 |
static int reg2slot(VMReg r) {
|
|
873 |
return r->reg2stack() + SharedRuntime::out_preserve_stack_slots(); |
|
874 |
} |
|
875 |
||
876 |
static int reg2offset(VMReg r) {
|
|
877 |
return reg2slot(r) * VMRegImpl::stack_slot_size; |
|
878 |
} |
|
879 |
||
880 |
static void verify_oop_args(MacroAssembler *masm, |
|
881 |
int total_args_passed, |
|
882 |
const BasicType *sig_bt, |
|
883 |
const VMRegPair *regs) {
|
|
884 |
if (!VerifyOops) { return; }
|
|
885 |
||
886 |
for (int i = 0; i < total_args_passed; i++) {
|
|
|
58356
feff88c68082
8231448: s390 and ppc - replace JVM type comparisons to T_OBJECT and T_ARRAY with call to is_reference_type
mbaesken
parents:
57710
diff
changeset
|
887 |
if (is_reference_type(sig_bt[i])) {
|
| 42065 | 888 |
VMReg r = regs[i].first(); |
889 |
assert(r->is_valid(), "bad oop arg"); |
|
890 |
||
891 |
if (r->is_stack()) {
|
|
892 |
__ z_lg(Z_R0_scratch, |
|
893 |
Address(Z_SP, r->reg2stack() * VMRegImpl::stack_slot_size + wordSize)); |
|
894 |
__ verify_oop(Z_R0_scratch); |
|
895 |
} else {
|
|
896 |
__ verify_oop(r->as_Register()); |
|
897 |
} |
|
898 |
} |
|
899 |
} |
|
900 |
} |
|
901 |
||
902 |
static void gen_special_dispatch(MacroAssembler *masm, |
|
903 |
int total_args_passed, |
|
904 |
vmIntrinsics::ID special_dispatch, |
|
905 |
const BasicType *sig_bt, |
|
906 |
const VMRegPair *regs) {
|
|
907 |
verify_oop_args(masm, total_args_passed, sig_bt, regs); |
|
908 |
||
909 |
// Now write the args into the outgoing interpreter space. |
|
910 |
bool has_receiver = false; |
|
911 |
Register receiver_reg = noreg; |
|
912 |
int member_arg_pos = -1; |
|
913 |
Register member_reg = noreg; |
|
914 |
int ref_kind = MethodHandles::signature_polymorphic_intrinsic_ref_kind(special_dispatch); |
|
915 |
||
916 |
if (ref_kind != 0) {
|
|
917 |
member_arg_pos = total_args_passed - 1; // trailing MemberName argument |
|
918 |
member_reg = Z_R9; // Known to be free at this point. |
|
919 |
has_receiver = MethodHandles::ref_kind_has_receiver(ref_kind); |
|
920 |
} else {
|
|
921 |
guarantee(special_dispatch == vmIntrinsics::_invokeBasic, "special_dispatch=%d", special_dispatch); |
|
922 |
has_receiver = true; |
|
923 |
} |
|
924 |
||
925 |
if (member_reg != noreg) {
|
|
926 |
// Load the member_arg into register, if necessary. |
|
927 |
assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
|
928 |
assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
|
929 |
||
930 |
VMReg r = regs[member_arg_pos].first(); |
|
931 |
assert(r->is_valid(), "bad member arg"); |
|
932 |
||
933 |
if (r->is_stack()) {
|
|
934 |
__ z_lg(member_reg, Address(Z_SP, reg2offset(r))); |
|
935 |
} else {
|
|
936 |
// No data motion is needed. |
|
937 |
member_reg = r->as_Register(); |
|
938 |
} |
|
939 |
} |
|
940 |
||
941 |
if (has_receiver) {
|
|
942 |
// Make sure the receiver is loaded into a register. |
|
943 |
assert(total_args_passed > 0, "oob"); |
|
944 |
assert(sig_bt[0] == T_OBJECT, "receiver argument must be an object"); |
|
945 |
||
946 |
VMReg r = regs[0].first(); |
|
947 |
assert(r->is_valid(), "bad receiver arg"); |
|
948 |
||
949 |
if (r->is_stack()) {
|
|
950 |
// Porting note: This assumes that compiled calling conventions always |
|
951 |
// pass the receiver oop in a register. If this is not true on some |
|
952 |
// platform, pick a temp and load the receiver from stack. |
|
953 |
assert(false, "receiver always in a register"); |
|
954 |
receiver_reg = Z_R13; // Known to be free at this point. |
|
955 |
__ z_lg(receiver_reg, Address(Z_SP, reg2offset(r))); |
|
956 |
} else {
|
|
957 |
// No data motion is needed. |
|
958 |
receiver_reg = r->as_Register(); |
|
959 |
} |
|
960 |
} |
|
961 |
||
962 |
// Figure out which address we are really jumping to: |
|
963 |
MethodHandles::generate_method_handle_dispatch(masm, special_dispatch, |
|
964 |
receiver_reg, member_reg, |
|
965 |
/*for_compiler_entry:*/ true); |
|
966 |
} |
|
967 |
||
968 |
//////////////////////////////////////////////////////////////////////// |
|
969 |
// |
|
970 |
// Argument shufflers |
|
971 |
// |
|
972 |
//////////////////////////////////////////////////////////////////////// |
|
973 |
||
974 |
// Is the size of a vector size (in bytes) bigger than a size saved by default? |
|
975 |
// 8 bytes registers are saved by default on z/Architecture. |
|
976 |
bool SharedRuntime::is_wide_vector(int size) {
|
|
977 |
// Note, MaxVectorSize == 8 on this platform. |
|
978 |
assert(size <= 8, "%d bytes vectors are not supported", size); |
|
979 |
return size > 8; |
|
980 |
} |
|
981 |
||
982 |
//---------------------------------------------------------------------- |
|
983 |
// An oop arg. Must pass a handle not the oop itself |
|
984 |
//---------------------------------------------------------------------- |
|
985 |
static void object_move(MacroAssembler *masm, |
|
986 |
OopMap *map, |
|
987 |
int oop_handle_offset, |
|
988 |
int framesize_in_slots, |
|
989 |
VMRegPair src, |
|
990 |
VMRegPair dst, |
|
991 |
bool is_receiver, |
|
992 |
int *receiver_offset) {
|
|
993 |
int frame_offset = framesize_in_slots*VMRegImpl::stack_slot_size; |
|
994 |
||
995 |
assert(!is_receiver || (is_receiver && (*receiver_offset == -1)), "only one receiving object per call, please."); |
|
996 |
||
997 |
// Must pass a handle. First figure out the location we use as a handle. |
|
998 |
||
999 |
if (src.first()->is_stack()) {
|
|
1000 |
// Oop is already on the stack, put handle on stack or in register |
|
1001 |
// If handle will be on the stack, use temp reg to calculate it. |
|
1002 |
Register rHandle = dst.first()->is_stack() ? Z_R1 : dst.first()->as_Register(); |
|
1003 |
Label skip; |
|
1004 |
int slot_in_older_frame = reg2slot(src.first()); |
|
1005 |
||
1006 |
guarantee(!is_receiver, "expecting receiver in register"); |
|
1007 |
map->set_oop(VMRegImpl::stack2reg(slot_in_older_frame + framesize_in_slots)); |
|
1008 |
||
1009 |
__ add2reg(rHandle, reg2offset(src.first())+frame_offset, Z_SP); |
|
1010 |
__ load_and_test_long(Z_R0, Address(rHandle)); |
|
1011 |
__ z_brne(skip); |
|
1012 |
// Use a NULL handle if oop is NULL. |
|
1013 |
__ clear_reg(rHandle, true, false); |
|
1014 |
__ bind(skip); |
|
1015 |
||
1016 |
// Copy handle to the right place (register or stack). |
|
1017 |
if (dst.first()->is_stack()) {
|
|
1018 |
__ z_stg(rHandle, reg2offset(dst.first()), Z_SP); |
|
1019 |
} // else |
|
1020 |
// nothing to do. rHandle uses the correct register |
|
1021 |
} else {
|
|
1022 |
// Oop is passed in an input register. We must flush it to the stack. |
|
1023 |
const Register rOop = src.first()->as_Register(); |
|
1024 |
const Register rHandle = dst.first()->is_stack() ? Z_R1 : dst.first()->as_Register(); |
|
1025 |
int oop_slot = (rOop->encoding()-Z_ARG1->encoding()) * VMRegImpl::slots_per_word + oop_handle_offset; |
|
1026 |
int oop_slot_offset = oop_slot*VMRegImpl::stack_slot_size; |
|
1027 |
NearLabel skip; |
|
1028 |
||
1029 |
if (is_receiver) {
|
|
1030 |
*receiver_offset = oop_slot_offset; |
|
1031 |
} |
|
1032 |
map->set_oop(VMRegImpl::stack2reg(oop_slot)); |
|
1033 |
||
1034 |
// Flush Oop to stack, calculate handle. |
|
1035 |
__ z_stg(rOop, oop_slot_offset, Z_SP); |
|
1036 |
__ add2reg(rHandle, oop_slot_offset, Z_SP); |
|
1037 |
||
1038 |
// If Oop == NULL, use a NULL handle. |
|
1039 |
__ compare64_and_branch(rOop, (RegisterOrConstant)0L, Assembler::bcondNotEqual, skip); |
|
1040 |
__ clear_reg(rHandle, true, false); |
|
1041 |
__ bind(skip); |
|
1042 |
||
1043 |
// Copy handle to the right place (register or stack). |
|
1044 |
if (dst.first()->is_stack()) {
|
|
1045 |
__ z_stg(rHandle, reg2offset(dst.first()), Z_SP); |
|
1046 |
} // else |
|
1047 |
// nothing to do here, since rHandle = dst.first()->as_Register in this case. |
|
1048 |
} |
|
1049 |
} |
|
1050 |
||
1051 |
//---------------------------------------------------------------------- |
|
1052 |
// A float arg. May have to do float reg to int reg conversion |
|
1053 |
//---------------------------------------------------------------------- |
|
1054 |
static void float_move(MacroAssembler *masm, |
|
1055 |
VMRegPair src, |
|
1056 |
VMRegPair dst, |
|
1057 |
int framesize_in_slots, |
|
1058 |
int workspace_slot_offset) {
|
|
1059 |
int frame_offset = framesize_in_slots * VMRegImpl::stack_slot_size; |
|
1060 |
int workspace_offset = workspace_slot_offset * VMRegImpl::stack_slot_size; |
|
1061 |
||
1062 |
// We do not accept an argument in a VMRegPair to be spread over two slots, |
|
1063 |
// no matter what physical location (reg or stack) the slots may have. |
|
1064 |
// We just check for the unaccepted slot to be invalid. |
|
1065 |
assert(!src.second()->is_valid(), "float in arg spread over two slots"); |
|
1066 |
assert(!dst.second()->is_valid(), "float out arg spread over two slots"); |
|
1067 |
||
1068 |
if (src.first()->is_stack()) {
|
|
1069 |
if (dst.first()->is_stack()) {
|
|
1070 |
// stack -> stack. The easiest of the bunch. |
|
1071 |
__ z_mvc(Address(Z_SP, reg2offset(dst.first())), |
|
1072 |
Address(Z_SP, reg2offset(src.first()) + frame_offset), sizeof(float)); |
|
1073 |
} else {
|
|
1074 |
// stack to reg |
|
1075 |
Address memaddr(Z_SP, reg2offset(src.first()) + frame_offset); |
|
1076 |
if (dst.first()->is_Register()) {
|
|
1077 |
__ mem2reg_opt(dst.first()->as_Register(), memaddr, false); |
|
1078 |
} else {
|
|
1079 |
__ mem2freg_opt(dst.first()->as_FloatRegister(), memaddr, false); |
|
1080 |
} |
|
1081 |
} |
|
1082 |
} else if (src.first()->is_Register()) {
|
|
1083 |
if (dst.first()->is_stack()) {
|
|
1084 |
// gpr -> stack |
|
1085 |
__ reg2mem_opt(src.first()->as_Register(), |
|
1086 |
Address(Z_SP, reg2offset(dst.first()), false )); |
|
1087 |
} else {
|
|
1088 |
if (dst.first()->is_Register()) {
|
|
1089 |
// gpr -> gpr |
|
1090 |
__ move_reg_if_needed(dst.first()->as_Register(), T_INT, |
|
1091 |
src.first()->as_Register(), T_INT); |
|
1092 |
} else {
|
|
1093 |
if (VM_Version::has_FPSupportEnhancements()) {
|
|
1094 |
// gpr -> fpr. Exploit z10 capability of direct transfer. |
|
1095 |
__ z_ldgr(dst.first()->as_FloatRegister(), src.first()->as_Register()); |
|
1096 |
} else {
|
|
1097 |
// gpr -> fpr. Use work space on stack to transfer data. |
|
1098 |
Address stackaddr(Z_SP, workspace_offset); |
|
1099 |
||
1100 |
__ reg2mem_opt(src.first()->as_Register(), stackaddr, false); |
|
1101 |
__ mem2freg_opt(dst.first()->as_FloatRegister(), stackaddr, false); |
|
1102 |
} |
|
1103 |
} |
|
1104 |
} |
|
1105 |
} else {
|
|
1106 |
if (dst.first()->is_stack()) {
|
|
1107 |
// fpr -> stack |
|
1108 |
__ freg2mem_opt(src.first()->as_FloatRegister(), |
|
1109 |
Address(Z_SP, reg2offset(dst.first())), false); |
|
1110 |
} else {
|
|
1111 |
if (dst.first()->is_Register()) {
|
|
1112 |
if (VM_Version::has_FPSupportEnhancements()) {
|
|
1113 |
// fpr -> gpr. |
|
1114 |
__ z_lgdr(dst.first()->as_Register(), src.first()->as_FloatRegister()); |
|
1115 |
} else {
|
|
1116 |
// fpr -> gpr. Use work space on stack to transfer data. |
|
1117 |
Address stackaddr(Z_SP, workspace_offset); |
|
1118 |
||
1119 |
__ freg2mem_opt(src.first()->as_FloatRegister(), stackaddr, false); |
|
1120 |
__ mem2reg_opt(dst.first()->as_Register(), stackaddr, false); |
|
1121 |
} |
|
1122 |
} else {
|
|
1123 |
// fpr -> fpr |
|
1124 |
__ move_freg_if_needed(dst.first()->as_FloatRegister(), T_FLOAT, |
|
1125 |
src.first()->as_FloatRegister(), T_FLOAT); |
|
1126 |
} |
|
1127 |
} |
|
1128 |
} |
|
1129 |
} |
|
1130 |
||
1131 |
//---------------------------------------------------------------------- |
|
1132 |
// A double arg. May have to do double reg to long reg conversion |
|
1133 |
//---------------------------------------------------------------------- |
|
1134 |
static void double_move(MacroAssembler *masm, |
|
1135 |
VMRegPair src, |
|
1136 |
VMRegPair dst, |
|
1137 |
int framesize_in_slots, |
|
1138 |
int workspace_slot_offset) {
|
|
1139 |
int frame_offset = framesize_in_slots*VMRegImpl::stack_slot_size; |
|
1140 |
int workspace_offset = workspace_slot_offset*VMRegImpl::stack_slot_size; |
|
1141 |
||
1142 |
// Since src is always a java calling convention we know that the |
|
1143 |
// src pair is always either all registers or all stack (and aligned?) |
|
1144 |
||
1145 |
if (src.first()->is_stack()) {
|
|
1146 |
if (dst.first()->is_stack()) {
|
|
1147 |
// stack -> stack. The easiest of the bunch. |
|
1148 |
__ z_mvc(Address(Z_SP, reg2offset(dst.first())), |
|
1149 |
Address(Z_SP, reg2offset(src.first()) + frame_offset), sizeof(double)); |
|
1150 |
} else {
|
|
1151 |
// stack to reg |
|
1152 |
Address stackaddr(Z_SP, reg2offset(src.first()) + frame_offset); |
|
1153 |
||
1154 |
if (dst.first()->is_Register()) {
|
|
1155 |
__ mem2reg_opt(dst.first()->as_Register(), stackaddr); |
|
1156 |
} else {
|
|
1157 |
__ mem2freg_opt(dst.first()->as_FloatRegister(), stackaddr); |
|
1158 |
} |
|
1159 |
} |
|
1160 |
} else if (src.first()->is_Register()) {
|
|
1161 |
if (dst.first()->is_stack()) {
|
|
1162 |
// gpr -> stack |
|
1163 |
__ reg2mem_opt(src.first()->as_Register(), |
|
1164 |
Address(Z_SP, reg2offset(dst.first()))); |
|
1165 |
} else {
|
|
1166 |
if (dst.first()->is_Register()) {
|
|
1167 |
// gpr -> gpr |
|
1168 |
__ move_reg_if_needed(dst.first()->as_Register(), T_LONG, |
|
1169 |
src.first()->as_Register(), T_LONG); |
|
1170 |
} else {
|
|
1171 |
if (VM_Version::has_FPSupportEnhancements()) {
|
|
1172 |
// gpr -> fpr. Exploit z10 capability of direct transfer. |
|
1173 |
__ z_ldgr(dst.first()->as_FloatRegister(), src.first()->as_Register()); |
|
1174 |
} else {
|
|
1175 |
// gpr -> fpr. Use work space on stack to transfer data. |
|
1176 |
Address stackaddr(Z_SP, workspace_offset); |
|
1177 |
__ reg2mem_opt(src.first()->as_Register(), stackaddr); |
|
1178 |
__ mem2freg_opt(dst.first()->as_FloatRegister(), stackaddr); |
|
1179 |
} |
|
1180 |
} |
|
1181 |
} |
|
1182 |
} else {
|
|
1183 |
if (dst.first()->is_stack()) {
|
|
1184 |
// fpr -> stack |
|
1185 |
__ freg2mem_opt(src.first()->as_FloatRegister(), |
|
1186 |
Address(Z_SP, reg2offset(dst.first()))); |
|
1187 |
} else {
|
|
1188 |
if (dst.first()->is_Register()) {
|
|
1189 |
if (VM_Version::has_FPSupportEnhancements()) {
|
|
1190 |
// fpr -> gpr. Exploit z10 capability of direct transfer. |
|
1191 |
__ z_lgdr(dst.first()->as_Register(), src.first()->as_FloatRegister()); |
|
1192 |
} else {
|
|
1193 |
// fpr -> gpr. Use work space on stack to transfer data. |
|
1194 |
Address stackaddr(Z_SP, workspace_offset); |
|
1195 |
||
1196 |
__ freg2mem_opt(src.first()->as_FloatRegister(), stackaddr); |
|
1197 |
__ mem2reg_opt(dst.first()->as_Register(), stackaddr); |
|
1198 |
} |
|
1199 |
} else {
|
|
1200 |
// fpr -> fpr |
|
1201 |
// In theory these overlap but the ordering is such that this is likely a nop. |
|
1202 |
__ move_freg_if_needed(dst.first()->as_FloatRegister(), T_DOUBLE, |
|
1203 |
src.first()->as_FloatRegister(), T_DOUBLE); |
|
1204 |
} |
|
1205 |
} |
|
1206 |
} |
|
1207 |
} |
|
1208 |
||
1209 |
//---------------------------------------------------------------------- |
|
1210 |
// A long arg. |
|
1211 |
//---------------------------------------------------------------------- |
|
1212 |
static void long_move(MacroAssembler *masm, |
|
1213 |
VMRegPair src, |
|
1214 |
VMRegPair dst, |
|
1215 |
int framesize_in_slots) {
|
|
1216 |
int frame_offset = framesize_in_slots*VMRegImpl::stack_slot_size; |
|
1217 |
||
1218 |
if (src.first()->is_stack()) {
|
|
1219 |
if (dst.first()->is_stack()) {
|
|
1220 |
// stack -> stack. The easiest of the bunch. |
|
1221 |
__ z_mvc(Address(Z_SP, reg2offset(dst.first())), |
|
1222 |
Address(Z_SP, reg2offset(src.first()) + frame_offset), sizeof(long)); |
|
1223 |
} else {
|
|
1224 |
// stack to reg |
|
1225 |
assert(dst.first()->is_Register(), "long dst value must be in GPR"); |
|
1226 |
__ mem2reg_opt(dst.first()->as_Register(), |
|
1227 |
Address(Z_SP, reg2offset(src.first()) + frame_offset)); |
|
1228 |
} |
|
1229 |
} else {
|
|
1230 |
// reg to reg |
|
1231 |
assert(src.first()->is_Register(), "long src value must be in GPR"); |
|
1232 |
if (dst.first()->is_stack()) {
|
|
1233 |
// reg -> stack |
|
1234 |
__ reg2mem_opt(src.first()->as_Register(), |
|
1235 |
Address(Z_SP, reg2offset(dst.first()))); |
|
1236 |
} else {
|
|
1237 |
// reg -> reg |
|
1238 |
assert(dst.first()->is_Register(), "long dst value must be in GPR"); |
|
1239 |
__ move_reg_if_needed(dst.first()->as_Register(), |
|
1240 |
T_LONG, src.first()->as_Register(), T_LONG); |
|
1241 |
} |
|
1242 |
} |
|
1243 |
} |
|
1244 |
||
1245 |
||
1246 |
//---------------------------------------------------------------------- |
|
1247 |
// A int-like arg. |
|
1248 |
//---------------------------------------------------------------------- |
|
1249 |
// On z/Architecture we will store integer like items to the stack as 64 bit |
|
1250 |
// items, according to the z/Architecture ABI, even though Java would only store |
|
1251 |
// 32 bits for a parameter. |
|
1252 |
// We do sign extension for all base types. That is ok since the only |
|
1253 |
// unsigned base type is T_CHAR, and T_CHAR uses only 16 bits of an int. |
|
1254 |
// Sign extension 32->64 bit will thus not affect the value. |
|
1255 |
//---------------------------------------------------------------------- |
|
1256 |
static void move32_64(MacroAssembler *masm, |
|
1257 |
VMRegPair src, |
|
1258 |
VMRegPair dst, |
|
1259 |
int framesize_in_slots) {
|
|
1260 |
int frame_offset = framesize_in_slots * VMRegImpl::stack_slot_size; |
|
1261 |
||
1262 |
if (src.first()->is_stack()) {
|
|
1263 |
Address memaddr(Z_SP, reg2offset(src.first()) + frame_offset); |
|
1264 |
if (dst.first()->is_stack()) {
|
|
1265 |
// stack -> stack. MVC not posible due to sign extension. |
|
1266 |
Address firstaddr(Z_SP, reg2offset(dst.first())); |
|
1267 |
__ mem2reg_signed_opt(Z_R0_scratch, memaddr); |
|
1268 |
__ reg2mem_opt(Z_R0_scratch, firstaddr); |
|
1269 |
} else {
|
|
1270 |
// stack -> reg, sign extended |
|
1271 |
__ mem2reg_signed_opt(dst.first()->as_Register(), memaddr); |
|
1272 |
} |
|
1273 |
} else {
|
|
1274 |
if (dst.first()->is_stack()) {
|
|
1275 |
// reg -> stack, sign extended |
|
1276 |
Address firstaddr(Z_SP, reg2offset(dst.first())); |
|
1277 |
__ z_lgfr(src.first()->as_Register(), src.first()->as_Register()); |
|
1278 |
__ reg2mem_opt(src.first()->as_Register(), firstaddr); |
|
1279 |
} else {
|
|
1280 |
// reg -> reg, sign extended |
|
1281 |
__ z_lgfr(dst.first()->as_Register(), src.first()->as_Register()); |
|
1282 |
} |
|
1283 |
} |
|
1284 |
} |
|
1285 |
||
1286 |
static void save_or_restore_arguments(MacroAssembler *masm, |
|
1287 |
const int stack_slots, |
|
1288 |
const int total_in_args, |
|
1289 |
const int arg_save_area, |
|
1290 |
OopMap *map, |
|
1291 |
VMRegPair *in_regs, |
|
1292 |
BasicType *in_sig_bt) {
|
|
1293 |
||
1294 |
// If map is non-NULL then the code should store the values, |
|
1295 |
// otherwise it should load them. |
|
1296 |
int slot = arg_save_area; |
|
1297 |
// Handle double words first. |
|
1298 |
for (int i = 0; i < total_in_args; i++) {
|
|
1299 |
if (in_regs[i].first()->is_FloatRegister() && in_sig_bt[i] == T_DOUBLE) {
|
|
1300 |
int offset = slot * VMRegImpl::stack_slot_size; |
|
1301 |
slot += VMRegImpl::slots_per_word; |
|
1302 |
assert(slot <= stack_slots, "overflow (after DOUBLE stack slot)"); |
|
1303 |
const FloatRegister freg = in_regs[i].first()->as_FloatRegister(); |
|
1304 |
Address stackaddr(Z_SP, offset); |
|
1305 |
if (map != NULL) {
|
|
1306 |
__ freg2mem_opt(freg, stackaddr); |
|
1307 |
} else {
|
|
1308 |
__ mem2freg_opt(freg, stackaddr); |
|
1309 |
} |
|
1310 |
} else if (in_regs[i].first()->is_Register() && |
|
1311 |
(in_sig_bt[i] == T_LONG || in_sig_bt[i] == T_ARRAY)) {
|
|
1312 |
int offset = slot * VMRegImpl::stack_slot_size; |
|
1313 |
const Register reg = in_regs[i].first()->as_Register(); |
|
1314 |
if (map != NULL) {
|
|
1315 |
__ z_stg(reg, offset, Z_SP); |
|
1316 |
if (in_sig_bt[i] == T_ARRAY) {
|
|
1317 |
map->set_oop(VMRegImpl::stack2reg(slot)); |
|
1318 |
} |
|
1319 |
} else {
|
|
1320 |
__ z_lg(reg, offset, Z_SP); |
|
1321 |
} |
|
| 47795 | 1322 |
slot += VMRegImpl::slots_per_word; |
1323 |
assert(slot <= stack_slots, "overflow (after LONG/ARRAY stack slot)"); |
|
| 42065 | 1324 |
} |
1325 |
} |
|
1326 |
||
1327 |
// Save or restore single word registers. |
|
1328 |
for (int i = 0; i < total_in_args; i++) {
|
|
| 47795 | 1329 |
if (in_regs[i].first()->is_Register()) {
|
1330 |
int offset = slot * VMRegImpl::stack_slot_size; |
|
1331 |
// Value lives in an input register. Save it on stack. |
|
1332 |
switch (in_sig_bt[i]) {
|
|
1333 |
case T_BOOLEAN: |
|
1334 |
case T_CHAR: |
|
1335 |
case T_BYTE: |
|
1336 |
case T_SHORT: |
|
1337 |
case T_INT: {
|
|
1338 |
const Register reg = in_regs[i].first()->as_Register(); |
|
1339 |
Address stackaddr(Z_SP, offset); |
|
1340 |
if (map != NULL) {
|
|
1341 |
__ z_st(reg, stackaddr); |
|
1342 |
} else {
|
|
1343 |
__ z_lgf(reg, stackaddr); |
|
1344 |
} |
|
1345 |
slot++; |
|
1346 |
assert(slot <= stack_slots, "overflow (after INT or smaller stack slot)"); |
|
1347 |
break; |
|
1348 |
} |
|
1349 |
case T_ARRAY: |
|
1350 |
case T_LONG: |
|
1351 |
// handled above |
|
1352 |
break; |
|
1353 |
case T_OBJECT: |
|
1354 |
default: ShouldNotReachHere(); |
|
1355 |
} |
|
1356 |
} else if (in_regs[i].first()->is_FloatRegister()) {
|
|
| 42065 | 1357 |
if (in_sig_bt[i] == T_FLOAT) {
|
1358 |
int offset = slot * VMRegImpl::stack_slot_size; |
|
1359 |
slot++; |
|
1360 |
assert(slot <= stack_slots, "overflow (after FLOAT stack slot)"); |
|
1361 |
const FloatRegister freg = in_regs[i].first()->as_FloatRegister(); |
|
1362 |
Address stackaddr(Z_SP, offset); |
|
1363 |
if (map != NULL) {
|
|
1364 |
__ freg2mem_opt(freg, stackaddr, false); |
|
1365 |
} else {
|
|
1366 |
__ mem2freg_opt(freg, stackaddr, false); |
|
1367 |
} |
|
1368 |
} |
|
1369 |
} else if (in_regs[i].first()->is_stack() && |
|
1370 |
in_sig_bt[i] == T_ARRAY && map != NULL) {
|
|
1371 |
int offset_in_older_frame = in_regs[i].first()->reg2stack() + SharedRuntime::out_preserve_stack_slots(); |
|
1372 |
map->set_oop(VMRegImpl::stack2reg(offset_in_older_frame + stack_slots)); |
|
1373 |
} |
|
1374 |
} |
|
1375 |
} |
|
1376 |
||
1377 |
// Check GCLocker::needs_gc and enter the runtime if it's true. This |
|
1378 |
// keeps a new JNI critical region from starting until a GC has been |
|
1379 |
// forced. Save down any oops in registers and describe them in an OopMap. |
|
1380 |
static void check_needs_gc_for_critical_native(MacroAssembler *masm, |
|
1381 |
const int stack_slots, |
|
1382 |
const int total_in_args, |
|
1383 |
const int arg_save_area, |
|
1384 |
OopMapSet *oop_maps, |
|
1385 |
VMRegPair *in_regs, |
|
1386 |
BasicType *in_sig_bt) {
|
|
1387 |
__ block_comment("check GCLocker::needs_gc");
|
|
1388 |
Label cont; |
|
1389 |
||
1390 |
// Check GCLocker::_needs_gc flag. |
|
1391 |
__ load_const_optimized(Z_R1_scratch, (long) GCLocker::needs_gc_address()); |
|
1392 |
__ z_cli(0, Z_R1_scratch, 0); |
|
1393 |
__ z_bre(cont); |
|
1394 |
||
1395 |
// Save down any values that are live in registers and call into the |
|
1396 |
// runtime to halt for a GC. |
|
1397 |
OopMap *map = new OopMap(stack_slots * 2, 0 /* arg_slots*/); |
|
1398 |
||
1399 |
save_or_restore_arguments(masm, stack_slots, total_in_args, |
|
1400 |
arg_save_area, map, in_regs, in_sig_bt); |
|
1401 |
address the_pc = __ pc(); |
|
1402 |
__ set_last_Java_frame(Z_SP, noreg); |
|
1403 |
||
1404 |
__ block_comment("block_for_jni_critical");
|
|
1405 |
__ z_lgr(Z_ARG1, Z_thread); |
|
1406 |
||
1407 |
address entry_point = CAST_FROM_FN_PTR(address, SharedRuntime::block_for_jni_critical); |
|
1408 |
__ call_c(entry_point); |
|
1409 |
oop_maps->add_gc_map(__ offset(), map); |
|
1410 |
||
1411 |
__ reset_last_Java_frame(); |
|
1412 |
||
1413 |
// Reload all the register arguments. |
|
1414 |
save_or_restore_arguments(masm, stack_slots, total_in_args, |
|
1415 |
arg_save_area, NULL, in_regs, in_sig_bt); |
|
1416 |
||
1417 |
__ bind(cont); |
|
1418 |
||
1419 |
if (StressCriticalJNINatives) {
|
|
1420 |
// Stress register saving |
|
1421 |
OopMap *map = new OopMap(stack_slots * 2, 0 /* arg_slots*/); |
|
1422 |
save_or_restore_arguments(masm, stack_slots, total_in_args, |
|
1423 |
arg_save_area, map, in_regs, in_sig_bt); |
|
1424 |
||
1425 |
// Destroy argument registers. |
|
1426 |
for (int i = 0; i < total_in_args; i++) {
|
|
1427 |
if (in_regs[i].first()->is_Register()) {
|
|
1428 |
// Don't set CC. |
|
1429 |
__ clear_reg(in_regs[i].first()->as_Register(), true, false); |
|
1430 |
} else {
|
|
1431 |
if (in_regs[i].first()->is_FloatRegister()) {
|
|
1432 |
FloatRegister fr = in_regs[i].first()->as_FloatRegister(); |
|
1433 |
__ z_lcdbr(fr, fr); |
|
1434 |
} |
|
1435 |
} |
|
1436 |
} |
|
1437 |
||
1438 |
save_or_restore_arguments(masm, stack_slots, total_in_args, |
|
1439 |
arg_save_area, NULL, in_regs, in_sig_bt); |
|
1440 |
} |
|
1441 |
} |
|
1442 |
||
1443 |
static void move_ptr(MacroAssembler *masm, |
|
1444 |
VMRegPair src, |
|
1445 |
VMRegPair dst, |
|
1446 |
int framesize_in_slots) {
|
|
1447 |
int frame_offset = framesize_in_slots * VMRegImpl::stack_slot_size; |
|
1448 |
||
1449 |
if (src.first()->is_stack()) {
|
|
1450 |
if (dst.first()->is_stack()) {
|
|
1451 |
// stack to stack |
|
1452 |
__ mem2reg_opt(Z_R0_scratch, Address(Z_SP, reg2offset(src.first()) + frame_offset)); |
|
1453 |
__ reg2mem_opt(Z_R0_scratch, Address(Z_SP, reg2offset(dst.first()))); |
|
1454 |
} else {
|
|
1455 |
// stack to reg |
|
1456 |
__ mem2reg_opt(dst.first()->as_Register(), |
|
1457 |
Address(Z_SP, reg2offset(src.first()) + frame_offset)); |
|
1458 |
} |
|
1459 |
} else {
|
|
1460 |
if (dst.first()->is_stack()) {
|
|
1461 |
// reg to stack |
|
1462 |
__ reg2mem_opt(src.first()->as_Register(), Address(Z_SP, reg2offset(dst.first()))); |
|
1463 |
} else {
|
|
1464 |
__ lgr_if_needed(dst.first()->as_Register(), src.first()->as_Register()); |
|
1465 |
} |
|
1466 |
} |
|
1467 |
} |
|
1468 |
||
1469 |
// Unpack an array argument into a pointer to the body and the length |
|
1470 |
// if the array is non-null, otherwise pass 0 for both. |
|
1471 |
static void unpack_array_argument(MacroAssembler *masm, |
|
1472 |
VMRegPair reg, |
|
1473 |
BasicType in_elem_type, |
|
1474 |
VMRegPair body_arg, |
|
1475 |
VMRegPair length_arg, |
|
1476 |
int framesize_in_slots) {
|
|
1477 |
Register tmp_reg = Z_tmp_2; |
|
1478 |
Register tmp2_reg = Z_tmp_1; |
|
1479 |
||
1480 |
assert(!body_arg.first()->is_Register() || body_arg.first()->as_Register() != tmp_reg, |
|
1481 |
"possible collision"); |
|
1482 |
assert(!length_arg.first()->is_Register() || length_arg.first()->as_Register() != tmp_reg, |
|
1483 |
"possible collision"); |
|
1484 |
||
1485 |
// Pass the length, ptr pair. |
|
1486 |
NearLabel set_out_args; |
|
1487 |
VMRegPair tmp, tmp2; |
|
1488 |
||
1489 |
tmp.set_ptr(tmp_reg->as_VMReg()); |
|
1490 |
tmp2.set_ptr(tmp2_reg->as_VMReg()); |
|
1491 |
if (reg.first()->is_stack()) {
|
|
1492 |
// Load the arg up from the stack. |
|
1493 |
move_ptr(masm, reg, tmp, framesize_in_slots); |
|
1494 |
reg = tmp; |
|
1495 |
} |
|
1496 |
||
1497 |
const Register first = reg.first()->as_Register(); |
|
1498 |
||
1499 |
// Don't set CC, indicate unused result. |
|
1500 |
(void) __ clear_reg(tmp2_reg, true, false); |
|
1501 |
if (tmp_reg != first) {
|
|
1502 |
__ clear_reg(tmp_reg, true, false); // Don't set CC. |
|
1503 |
} |
|
1504 |
__ compare64_and_branch(first, (RegisterOrConstant)0L, Assembler::bcondEqual, set_out_args); |
|
1505 |
__ z_lgf(tmp2_reg, Address(first, arrayOopDesc::length_offset_in_bytes())); |
|
1506 |
__ add2reg(tmp_reg, arrayOopDesc::base_offset_in_bytes(in_elem_type), first); |
|
1507 |
||
1508 |
__ bind(set_out_args); |
|
1509 |
move_ptr(masm, tmp, body_arg, framesize_in_slots); |
|
1510 |
move32_64(masm, tmp2, length_arg, framesize_in_slots); |
|
1511 |
} |
|
1512 |
||
1513 |
//---------------------------------------------------------------------- |
|
1514 |
// Wrap a JNI call. |
|
1515 |
//---------------------------------------------------------------------- |
|
1516 |
#undef USE_RESIZE_FRAME |
|
1517 |
nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm, |
|
1518 |
const methodHandle& method, |
|
1519 |
int compile_id, |
|
1520 |
BasicType *in_sig_bt, |
|
1521 |
VMRegPair *in_regs, |
|
|
57710
05ff6e27de45
8229236: CriticalJNINatives: dll handling should be done in native thread state
mdoerr
parents:
55749
diff
changeset
|
1522 |
BasicType ret_type, |
|
05ff6e27de45
8229236: CriticalJNINatives: dll handling should be done in native thread state
mdoerr
parents:
55749
diff
changeset
|
1523 |
address critical_entry) {
|
| 42065 | 1524 |
#ifdef COMPILER2 |
1525 |
int total_in_args = method->size_of_parameters(); |
|
1526 |
if (method->is_method_handle_intrinsic()) {
|
|
1527 |
vmIntrinsics::ID iid = method->intrinsic_id(); |
|
1528 |
intptr_t start = (intptr_t) __ pc(); |
|
1529 |
int vep_offset = ((intptr_t) __ pc()) - start; |
|
1530 |
||
1531 |
gen_special_dispatch(masm, total_in_args, |
|
1532 |
method->intrinsic_id(), in_sig_bt, in_regs); |
|
1533 |
||
1534 |
int frame_complete = ((intptr_t)__ pc()) - start; // Not complete, period. |
|
1535 |
||
1536 |
__ flush(); |
|
1537 |
||
1538 |
int stack_slots = SharedRuntime::out_preserve_stack_slots(); // No out slots at all, actually. |
|
1539 |
||
1540 |
return nmethod::new_native_nmethod(method, |
|
1541 |
compile_id, |
|
1542 |
masm->code(), |
|
1543 |
vep_offset, |
|
1544 |
frame_complete, |
|
1545 |
stack_slots / VMRegImpl::slots_per_word, |
|
1546 |
in_ByteSize(-1), |
|
1547 |
in_ByteSize(-1), |
|
1548 |
(OopMapSet *) NULL); |
|
1549 |
} |
|
1550 |
||
1551 |
||
1552 |
/////////////////////////////////////////////////////////////////////// |
|
1553 |
// |
|
1554 |
// Precalculations before generating any code |
|
1555 |
// |
|
1556 |
/////////////////////////////////////////////////////////////////////// |
|
1557 |
||
1558 |
bool is_critical_native = true; |
|
|
57710
05ff6e27de45
8229236: CriticalJNINatives: dll handling should be done in native thread state
mdoerr
parents:
55749
diff
changeset
|
1559 |
address native_func = critical_entry; |
| 42065 | 1560 |
if (native_func == NULL) {
|
1561 |
native_func = method->native_function(); |
|
1562 |
is_critical_native = false; |
|
1563 |
} |
|
1564 |
assert(native_func != NULL, "must have function"); |
|
1565 |
||
1566 |
//--------------------------------------------------------------------- |
|
1567 |
// We have received a description of where all the java args are located |
|
1568 |
// on entry to the wrapper. We need to convert these args to where |
|
1569 |
// the jni function will expect them. To figure out where they go |
|
1570 |
// we convert the java signature to a C signature by inserting |
|
1571 |
// the hidden arguments as arg[0] and possibly arg[1] (static method). |
|
1572 |
// |
|
1573 |
// The first hidden argument arg[0] is a pointer to the JNI environment. |
|
1574 |
// It is generated for every call. |
|
1575 |
// The second argument arg[1] to the JNI call, which is hidden for static |
|
1576 |
// methods, is the boxed lock object. For static calls, the lock object |
|
1577 |
// is the static method itself. The oop is constructed here. for instance |
|
1578 |
// calls, the lock is performed on the object itself, the pointer of |
|
1579 |
// which is passed as the first visible argument. |
|
1580 |
//--------------------------------------------------------------------- |
|
1581 |
||
1582 |
// Additionally, on z/Architecture we must convert integers |
|
1583 |
// to longs in the C signature. We do this in advance in order to have |
|
1584 |
// no trouble with indexes into the bt-arrays. |
|
1585 |
// So convert the signature and registers now, and adjust the total number |
|
1586 |
// of in-arguments accordingly. |
|
1587 |
bool method_is_static = method->is_static(); |
|
1588 |
int total_c_args = total_in_args; |
|
1589 |
||
1590 |
if (!is_critical_native) {
|
|
1591 |
int n_hidden_args = method_is_static ? 2 : 1; |
|
1592 |
total_c_args += n_hidden_args; |
|
1593 |
} else {
|
|
1594 |
// No JNIEnv*, no this*, but unpacked arrays (base+length). |
|
1595 |
for (int i = 0; i < total_in_args; i++) {
|
|
1596 |
if (in_sig_bt[i] == T_ARRAY) {
|
|
1597 |
total_c_args ++; |
|
1598 |
} |
|
1599 |
} |
|
1600 |
} |
|
1601 |
||
1602 |
BasicType *out_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_c_args); |
|
1603 |
VMRegPair *out_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_c_args); |
|
1604 |
BasicType* in_elem_bt = NULL; |
|
1605 |
||
1606 |
// Create the signature for the C call: |
|
1607 |
// 1) add the JNIEnv* |
|
1608 |
// 2) add the class if the method is static |
|
1609 |
// 3) copy the rest of the incoming signature (shifted by the number of |
|
1610 |
// hidden arguments) |
|
1611 |
||
1612 |
int argc = 0; |
|
1613 |
if (!is_critical_native) {
|
|
1614 |
out_sig_bt[argc++] = T_ADDRESS; |
|
1615 |
if (method->is_static()) {
|
|
1616 |
out_sig_bt[argc++] = T_OBJECT; |
|
1617 |
} |
|
1618 |
||
1619 |
for (int i = 0; i < total_in_args; i++) {
|
|
1620 |
out_sig_bt[argc++] = in_sig_bt[i]; |
|
1621 |
} |
|
1622 |
} else {
|
|
1623 |
in_elem_bt = NEW_RESOURCE_ARRAY(BasicType, total_in_args); |
|
1624 |
SignatureStream ss(method->signature()); |
|
1625 |
int o = 0; |
|
1626 |
for (int i = 0; i < total_in_args; i++, o++) {
|
|
1627 |
if (in_sig_bt[i] == T_ARRAY) {
|
|
1628 |
// Arrays are passed as tuples (int, elem*). |
|
|
54847
59ea39bb2809
8223657: Remove unused THREAD argument from SymbolTable functions
coleenp
parents:
52460
diff
changeset
|
1629 |
Symbol* atype = ss.as_symbol(); |
| 42065 | 1630 |
const char* at = atype->as_C_string(); |
1631 |
if (strlen(at) == 2) {
|
|
1632 |
assert(at[0] == '[', "must be"); |
|
1633 |
switch (at[1]) {
|
|
1634 |
case 'B': in_elem_bt[o] = T_BYTE; break; |
|
1635 |
case 'C': in_elem_bt[o] = T_CHAR; break; |
|
1636 |
case 'D': in_elem_bt[o] = T_DOUBLE; break; |
|
1637 |
case 'F': in_elem_bt[o] = T_FLOAT; break; |
|
1638 |
case 'I': in_elem_bt[o] = T_INT; break; |
|
1639 |
case 'J': in_elem_bt[o] = T_LONG; break; |
|
1640 |
case 'S': in_elem_bt[o] = T_SHORT; break; |
|
1641 |
case 'Z': in_elem_bt[o] = T_BOOLEAN; break; |
|
1642 |
default: ShouldNotReachHere(); |
|
1643 |
} |
|
1644 |
} |
|
1645 |
} else {
|
|
1646 |
in_elem_bt[o] = T_VOID; |
|
1647 |
} |
|
1648 |
if (in_sig_bt[i] != T_VOID) {
|
|
1649 |
assert(in_sig_bt[i] == ss.type(), "must match"); |
|
1650 |
ss.next(); |
|
1651 |
} |
|
1652 |
} |
|
1653 |
assert(total_in_args == o, "must match"); |
|
1654 |
||
1655 |
for (int i = 0; i < total_in_args; i++) {
|
|
1656 |
if (in_sig_bt[i] == T_ARRAY) {
|
|
1657 |
// Arrays are passed as tuples (int, elem*). |
|
1658 |
out_sig_bt[argc++] = T_INT; |
|
1659 |
out_sig_bt[argc++] = T_ADDRESS; |
|
1660 |
} else {
|
|
1661 |
out_sig_bt[argc++] = in_sig_bt[i]; |
|
1662 |
} |
|
1663 |
} |
|
1664 |
} |
|
1665 |
||
1666 |
/////////////////////////////////////////////////////////////////////// |
|
1667 |
// Now figure out where the args must be stored and how much stack space |
|
1668 |
// they require (neglecting out_preserve_stack_slots but providing space |
|
1669 |
// for storing the first five register arguments). |
|
1670 |
// It's weird, see int_stk_helper. |
|
1671 |
/////////////////////////////////////////////////////////////////////// |
|
1672 |
||
1673 |
//--------------------------------------------------------------------- |
|
1674 |
// Compute framesize for the wrapper. |
|
1675 |
// |
|
1676 |
// - We need to handlize all oops passed in registers. |
|
1677 |
// - We must create space for them here that is disjoint from the save area. |
|
1678 |
// - We always just allocate 5 words for storing down these object. |
|
1679 |
// This allows us to simply record the base and use the Ireg number to |
|
1680 |
// decide which slot to use. |
|
1681 |
// - Note that the reg number used to index the stack slot is the inbound |
|
1682 |
// number, not the outbound number. |
|
1683 |
// - We must shuffle args to match the native convention, |
|
1684 |
// and to include var-args space. |
|
1685 |
//--------------------------------------------------------------------- |
|
1686 |
||
1687 |
//--------------------------------------------------------------------- |
|
1688 |
// Calculate the total number of stack slots we will need: |
|
1689 |
// - 1) abi requirements |
|
1690 |
// - 2) outgoing args |
|
1691 |
// - 3) space for inbound oop handle area |
|
1692 |
// - 4) space for handlizing a klass if static method |
|
1693 |
// - 5) space for a lock if synchronized method |
|
1694 |
// - 6) workspace (save rtn value, int<->float reg moves, ...) |
|
1695 |
// - 7) filler slots for alignment |
|
1696 |
//--------------------------------------------------------------------- |
|
1697 |
// Here is how the space we have allocated will look like. |
|
1698 |
// Since we use resize_frame, we do not create a new stack frame, |
|
1699 |
// but just extend the one we got with our own data area. |
|
1700 |
// |
|
1701 |
// If an offset or pointer name points to a separator line, it is |
|
1702 |
// assumed that addressing with offset 0 selects storage starting |
|
1703 |
// at the first byte above the separator line. |
|
1704 |
// |
|
1705 |
// |
|
1706 |
// ... ... |
|
1707 |
// | caller's frame | |
|
1708 |
// FP-> |---------------------| |
|
1709 |
// | filler slots, if any| |
|
1710 |
// 7| #slots == mult of 2 | |
|
1711 |
// |---------------------| |
|
1712 |
// | work space | |
|
1713 |
// 6| 2 slots = 8 bytes | |
|
1714 |
// |---------------------| |
|
1715 |
// 5| lock box (if sync) | |
|
1716 |
// |---------------------| <- lock_slot_offset |
|
1717 |
// 4| klass (if static) | |
|
1718 |
// |---------------------| <- klass_slot_offset |
|
1719 |
// 3| oopHandle area | |
|
1720 |
// | (save area for | |
|
1721 |
// | critical natives) | |
|
1722 |
// | | |
|
1723 |
// | | |
|
1724 |
// |---------------------| <- oop_handle_offset |
|
1725 |
// 2| outbound memory | |
|
1726 |
// ... ... |
|
1727 |
// | based arguments | |
|
1728 |
// |---------------------| |
|
1729 |
// | vararg | |
|
1730 |
// ... ... |
|
1731 |
// | area | |
|
1732 |
// |---------------------| <- out_arg_slot_offset |
|
1733 |
// 1| out_preserved_slots | |
|
1734 |
// ... ... |
|
1735 |
// | (z_abi spec) | |
|
1736 |
// SP-> |---------------------| <- FP_slot_offset (back chain) |
|
1737 |
// ... ... |
|
1738 |
// |
|
1739 |
//--------------------------------------------------------------------- |
|
1740 |
||
1741 |
// *_slot_offset indicates offset from SP in #stack slots |
|
1742 |
// *_offset indicates offset from SP in #bytes |
|
1743 |
||
1744 |
int stack_slots = c_calling_convention(out_sig_bt, out_regs, /*regs2=*/NULL, total_c_args) + // 1+2 |
|
1745 |
SharedRuntime::out_preserve_stack_slots(); // see c_calling_convention |
|
1746 |
||
1747 |
// Now the space for the inbound oop handle area. |
|
1748 |
int total_save_slots = RegisterImpl::number_of_arg_registers * VMRegImpl::slots_per_word; |
|
1749 |
if (is_critical_native) {
|
|
1750 |
// Critical natives may have to call out so they need a save area |
|
1751 |
// for register arguments. |
|
1752 |
int double_slots = 0; |
|
1753 |
int single_slots = 0; |
|
1754 |
for (int i = 0; i < total_in_args; i++) {
|
|
1755 |
if (in_regs[i].first()->is_Register()) {
|
|
1756 |
const Register reg = in_regs[i].first()->as_Register(); |
|
1757 |
switch (in_sig_bt[i]) {
|
|
1758 |
case T_BOOLEAN: |
|
1759 |
case T_BYTE: |
|
1760 |
case T_SHORT: |
|
1761 |
case T_CHAR: |
|
1762 |
case T_INT: |
|
1763 |
// Fall through. |
|
1764 |
case T_ARRAY: |
|
1765 |
case T_LONG: double_slots++; break; |
|
1766 |
default: ShouldNotReachHere(); |
|
1767 |
} |
|
1768 |
} else {
|
|
1769 |
if (in_regs[i].first()->is_FloatRegister()) {
|
|
1770 |
switch (in_sig_bt[i]) {
|
|
1771 |
case T_FLOAT: single_slots++; break; |
|
1772 |
case T_DOUBLE: double_slots++; break; |
|
1773 |
default: ShouldNotReachHere(); |
|
1774 |
} |
|
1775 |
} |
|
1776 |
} |
|
1777 |
} // for |
|
|
46620
750c6edff33b
8178500: Replace usages of round_to and round_down with align_up and align_down
stefank
parents:
44406
diff
changeset
|
1778 |
total_save_slots = double_slots * 2 + align_up(single_slots, 2); // Round to even. |
| 42065 | 1779 |
} |
1780 |
||
1781 |
int oop_handle_slot_offset = stack_slots; |
|
1782 |
stack_slots += total_save_slots; // 3) |
|
1783 |
||
1784 |
int klass_slot_offset = 0; |
|
1785 |
int klass_offset = -1; |
|
1786 |
if (method_is_static && !is_critical_native) { // 4)
|
|
1787 |
klass_slot_offset = stack_slots; |
|
1788 |
klass_offset = klass_slot_offset * VMRegImpl::stack_slot_size; |
|
1789 |
stack_slots += VMRegImpl::slots_per_word; |
|
1790 |
} |
|
1791 |
||
1792 |
int lock_slot_offset = 0; |
|
1793 |
int lock_offset = -1; |
|
1794 |
if (method->is_synchronized()) { // 5)
|
|
1795 |
lock_slot_offset = stack_slots; |
|
1796 |
lock_offset = lock_slot_offset * VMRegImpl::stack_slot_size; |
|
1797 |
stack_slots += VMRegImpl::slots_per_word; |
|
1798 |
} |
|
1799 |
||
1800 |
int workspace_slot_offset= stack_slots; // 6) |
|
1801 |
stack_slots += 2; |
|
1802 |
||
1803 |
// Now compute actual number of stack words we need. |
|
1804 |
// Round to align stack properly. |
|
|
46620
750c6edff33b
8178500: Replace usages of round_to and round_down with align_up and align_down
stefank
parents:
44406
diff
changeset
|
1805 |
stack_slots = align_up(stack_slots, // 7) |
| 42065 | 1806 |
frame::alignment_in_bytes / VMRegImpl::stack_slot_size); |
1807 |
int frame_size_in_bytes = stack_slots * VMRegImpl::stack_slot_size; |
|
1808 |
||
1809 |
||
1810 |
/////////////////////////////////////////////////////////////////////// |
|
1811 |
// Now we can start generating code |
|
1812 |
/////////////////////////////////////////////////////////////////////// |
|
1813 |
||
1814 |
unsigned int wrapper_CodeStart = __ offset(); |
|
1815 |
unsigned int wrapper_UEPStart; |
|
1816 |
unsigned int wrapper_VEPStart; |
|
1817 |
unsigned int wrapper_FrameDone; |
|
1818 |
unsigned int wrapper_CRegsSet; |
|
1819 |
Label handle_pending_exception; |
|
1820 |
Label ic_miss; |
|
1821 |
||
1822 |
//--------------------------------------------------------------------- |
|
1823 |
// Unverified entry point (UEP) |
|
1824 |
//--------------------------------------------------------------------- |
|
1825 |
wrapper_UEPStart = __ offset(); |
|
1826 |
||
1827 |
// check ic: object class <-> cached class |
|
1828 |
if (!method_is_static) __ nmethod_UEP(ic_miss); |
|
1829 |
// Fill with nops (alignment of verified entry point). |
|
1830 |
__ align(CodeEntryAlignment); |
|
1831 |
||
1832 |
//--------------------------------------------------------------------- |
|
1833 |
// Verified entry point (VEP) |
|
1834 |
//--------------------------------------------------------------------- |
|
1835 |
wrapper_VEPStart = __ offset(); |
|
1836 |
||
|
55343
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1837 |
if (VM_Version::supports_fast_class_init_checks() && method->needs_clinit_barrier()) {
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1838 |
Label L_skip_barrier; |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1839 |
Register klass = Z_R1_scratch; |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1840 |
// Notify OOP recorder (don't need the relocation) |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1841 |
AddressLiteral md = __ constant_metadata_address(method->method_holder()); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1842 |
__ load_const_optimized(klass, md.value()); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1843 |
__ clinit_barrier(klass, Z_thread, &L_skip_barrier /*L_fast_path*/); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1844 |
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1845 |
__ load_const_optimized(klass, SharedRuntime::get_handle_wrong_method_stub()); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1846 |
__ z_br(klass); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1847 |
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1848 |
__ bind(L_skip_barrier); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1849 |
} |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
1850 |
|
| 42065 | 1851 |
__ save_return_pc(); |
1852 |
__ generate_stack_overflow_check(frame_size_in_bytes); // Check before creating frame. |
|
1853 |
#ifndef USE_RESIZE_FRAME |
|
1854 |
__ push_frame(frame_size_in_bytes); // Create a new frame for the wrapper. |
|
1855 |
#else |
|
1856 |
__ resize_frame(-frame_size_in_bytes, Z_R0_scratch); // No new frame for the wrapper. |
|
1857 |
// Just resize the existing one. |
|
1858 |
#endif |
|
1859 |
||
1860 |
wrapper_FrameDone = __ offset(); |
|
1861 |
||
1862 |
__ verify_thread(); |
|
1863 |
||
1864 |
// Native nmethod wrappers never take possession of the oop arguments. |
|
1865 |
// So the caller will gc the arguments. |
|
1866 |
// The only thing we need an oopMap for is if the call is static. |
|
1867 |
// |
|
1868 |
// An OopMap for lock (and class if static), and one for the VM call itself |
|
1869 |
OopMapSet *oop_maps = new OopMapSet(); |
|
1870 |
OopMap *map = new OopMap(stack_slots * 2, 0 /* arg_slots*/); |
|
1871 |
||
1872 |
if (is_critical_native) {
|
|
1873 |
check_needs_gc_for_critical_native(masm, stack_slots, total_in_args, |
|
1874 |
oop_handle_slot_offset, oop_maps, in_regs, in_sig_bt); |
|
1875 |
} |
|
1876 |
||
1877 |
||
1878 |
////////////////////////////////////////////////////////////////////// |
|
1879 |
// |
|
1880 |
// The Grand Shuffle |
|
1881 |
// |
|
1882 |
////////////////////////////////////////////////////////////////////// |
|
1883 |
// |
|
1884 |
// We immediately shuffle the arguments so that for any vm call we have |
|
1885 |
// to make from here on out (sync slow path, jvmti, etc.) we will have |
|
1886 |
// captured the oops from our caller and have a valid oopMap for them. |
|
1887 |
// |
|
1888 |
//-------------------------------------------------------------------- |
|
1889 |
// Natives require 1 or 2 extra arguments over the normal ones: the JNIEnv* |
|
1890 |
// (derived from JavaThread* which is in Z_thread) and, if static, |
|
1891 |
// the class mirror instead of a receiver. This pretty much guarantees that |
|
1892 |
// register layout will not match. We ignore these extra arguments during |
|
1893 |
// the shuffle. The shuffle is described by the two calling convention |
|
1894 |
// vectors we have in our possession. We simply walk the java vector to |
|
1895 |
// get the source locations and the c vector to get the destinations. |
|
1896 |
// |
|
1897 |
// This is a trick. We double the stack slots so we can claim |
|
1898 |
// the oops in the caller's frame. Since we are sure to have |
|
1899 |
// more args than the caller doubling is enough to make |
|
1900 |
// sure we can capture all the incoming oop args from the caller. |
|
1901 |
//-------------------------------------------------------------------- |
|
1902 |
||
1903 |
// Record sp-based slot for receiver on stack for non-static methods. |
|
1904 |
int receiver_offset = -1; |
|
1905 |
||
1906 |
//-------------------------------------------------------------------- |
|
1907 |
// We move the arguments backwards because the floating point registers |
|
1908 |
// destination will always be to a register with a greater or equal |
|
1909 |
// register number or the stack. |
|
1910 |
// jix is the index of the incoming Java arguments. |
|
1911 |
// cix is the index of the outgoing C arguments. |
|
1912 |
//-------------------------------------------------------------------- |
|
1913 |
||
1914 |
#ifdef ASSERT |
|
1915 |
bool reg_destroyed[RegisterImpl::number_of_registers]; |
|
1916 |
bool freg_destroyed[FloatRegisterImpl::number_of_registers]; |
|
1917 |
for (int r = 0; r < RegisterImpl::number_of_registers; r++) {
|
|
1918 |
reg_destroyed[r] = false; |
|
1919 |
} |
|
1920 |
for (int f = 0; f < FloatRegisterImpl::number_of_registers; f++) {
|
|
1921 |
freg_destroyed[f] = false; |
|
1922 |
} |
|
1923 |
#endif // ASSERT |
|
1924 |
||
1925 |
for (int jix = total_in_args - 1, cix = total_c_args - 1; jix >= 0; jix--, cix--) {
|
|
1926 |
#ifdef ASSERT |
|
1927 |
if (in_regs[jix].first()->is_Register()) {
|
|
1928 |
assert(!reg_destroyed[in_regs[jix].first()->as_Register()->encoding()], "ack!"); |
|
1929 |
} else {
|
|
1930 |
if (in_regs[jix].first()->is_FloatRegister()) {
|
|
1931 |
assert(!freg_destroyed[in_regs[jix].first()->as_FloatRegister()->encoding()], "ack!"); |
|
1932 |
} |
|
1933 |
} |
|
1934 |
if (out_regs[cix].first()->is_Register()) {
|
|
1935 |
reg_destroyed[out_regs[cix].first()->as_Register()->encoding()] = true; |
|
1936 |
} else {
|
|
1937 |
if (out_regs[cix].first()->is_FloatRegister()) {
|
|
1938 |
freg_destroyed[out_regs[cix].first()->as_FloatRegister()->encoding()] = true; |
|
1939 |
} |
|
1940 |
} |
|
1941 |
#endif // ASSERT |
|
1942 |
||
1943 |
switch (in_sig_bt[jix]) {
|
|
1944 |
// Due to casting, small integers should only occur in pairs with type T_LONG. |
|
1945 |
case T_BOOLEAN: |
|
1946 |
case T_CHAR: |
|
1947 |
case T_BYTE: |
|
1948 |
case T_SHORT: |
|
1949 |
case T_INT: |
|
1950 |
// Move int and do sign extension. |
|
1951 |
move32_64(masm, in_regs[jix], out_regs[cix], stack_slots); |
|
1952 |
break; |
|
1953 |
||
1954 |
case T_LONG : |
|
1955 |
long_move(masm, in_regs[jix], out_regs[cix], stack_slots); |
|
1956 |
break; |
|
1957 |
||
1958 |
case T_ARRAY: |
|
1959 |
if (is_critical_native) {
|
|
1960 |
int body_arg = cix; |
|
| 47795 | 1961 |
cix -= 1; // Point to length arg. |
| 42065 | 1962 |
unpack_array_argument(masm, in_regs[jix], in_elem_bt[jix], out_regs[body_arg], out_regs[cix], stack_slots); |
1963 |
break; |
|
1964 |
} |
|
1965 |
// else fallthrough |
|
1966 |
case T_OBJECT: |
|
1967 |
assert(!is_critical_native, "no oop arguments"); |
|
1968 |
object_move(masm, map, oop_handle_slot_offset, stack_slots, in_regs[jix], out_regs[cix], |
|
1969 |
((jix == 0) && (!method_is_static)), |
|
1970 |
&receiver_offset); |
|
1971 |
break; |
|
1972 |
case T_VOID: |
|
1973 |
break; |
|
1974 |
||
1975 |
case T_FLOAT: |
|
1976 |
float_move(masm, in_regs[jix], out_regs[cix], stack_slots, workspace_slot_offset); |
|
1977 |
break; |
|
1978 |
||
1979 |
case T_DOUBLE: |
|
1980 |
assert(jix+1 < total_in_args && in_sig_bt[jix+1] == T_VOID && out_sig_bt[cix+1] == T_VOID, "bad arg list"); |
|
1981 |
double_move(masm, in_regs[jix], out_regs[cix], stack_slots, workspace_slot_offset); |
|
1982 |
break; |
|
1983 |
||
1984 |
case T_ADDRESS: |
|
1985 |
assert(false, "found T_ADDRESS in java args"); |
|
1986 |
break; |
|
1987 |
||
1988 |
default: |
|
1989 |
ShouldNotReachHere(); |
|
1990 |
} |
|
1991 |
} |
|
1992 |
||
1993 |
//-------------------------------------------------------------------- |
|
1994 |
// Pre-load a static method's oop into ARG2. |
|
1995 |
// Used both by locking code and the normal JNI call code. |
|
1996 |
//-------------------------------------------------------------------- |
|
1997 |
if (method_is_static && !is_critical_native) {
|
|
1998 |
__ set_oop_constant(JNIHandles::make_local(method->method_holder()->java_mirror()), Z_ARG2); |
|
1999 |
||
2000 |
// Now handlize the static class mirror in ARG2. It's known not-null. |
|
2001 |
__ z_stg(Z_ARG2, klass_offset, Z_SP); |
|
2002 |
map->set_oop(VMRegImpl::stack2reg(klass_slot_offset)); |
|
2003 |
__ add2reg(Z_ARG2, klass_offset, Z_SP); |
|
2004 |
} |
|
2005 |
||
2006 |
// Get JNIEnv* which is first argument to native. |
|
2007 |
if (!is_critical_native) {
|
|
2008 |
__ add2reg(Z_ARG1, in_bytes(JavaThread::jni_environment_offset()), Z_thread); |
|
2009 |
} |
|
2010 |
||
2011 |
////////////////////////////////////////////////////////////////////// |
|
2012 |
// We have all of the arguments setup at this point. |
|
2013 |
// We MUST NOT touch any outgoing regs from this point on. |
|
2014 |
// So if we must call out we must push a new frame. |
|
2015 |
////////////////////////////////////////////////////////////////////// |
|
2016 |
||
2017 |
||
2018 |
// Calc the current pc into Z_R10 and into wrapper_CRegsSet. |
|
2019 |
// Both values represent the same position. |
|
2020 |
__ get_PC(Z_R10); // PC into register |
|
2021 |
wrapper_CRegsSet = __ offset(); // and into into variable. |
|
2022 |
||
2023 |
// Z_R10 now has the pc loaded that we will use when we finally call to native. |
|
2024 |
||
2025 |
// We use the same pc/oopMap repeatedly when we call out. |
|
2026 |
oop_maps->add_gc_map((int)(wrapper_CRegsSet-wrapper_CodeStart), map); |
|
2027 |
||
2028 |
// Lock a synchronized method. |
|
2029 |
||
2030 |
if (method->is_synchronized()) {
|
|
2031 |
assert(!is_critical_native, "unhandled"); |
|
2032 |
||
2033 |
// ATTENTION: args and Z_R10 must be preserved. |
|
2034 |
Register r_oop = Z_R11; |
|
2035 |
Register r_box = Z_R12; |
|
2036 |
Register r_tmp1 = Z_R13; |
|
2037 |
Register r_tmp2 = Z_R7; |
|
2038 |
Label done; |
|
2039 |
||
2040 |
// Load the oop for the object or class. R_carg2_classorobject contains |
|
2041 |
// either the handlized oop from the incoming arguments or the handlized |
|
2042 |
// class mirror (if the method is static). |
|
2043 |
__ z_lg(r_oop, 0, Z_ARG2); |
|
2044 |
||
2045 |
lock_offset = (lock_slot_offset * VMRegImpl::stack_slot_size); |
|
2046 |
// Get the lock box slot's address. |
|
2047 |
__ add2reg(r_box, lock_offset, Z_SP); |
|
2048 |
||
2049 |
#ifdef ASSERT |
|
2050 |
if (UseBiasedLocking) |
|
2051 |
// Making the box point to itself will make it clear it went unused |
|
2052 |
// but also be obviously invalid. |
|
2053 |
__ z_stg(r_box, 0, r_box); |
|
2054 |
#endif // ASSERT |
|
2055 |
||
2056 |
// Try fastpath for locking. |
|
2057 |
// Fast_lock kills r_temp_1, r_temp_2. (Don't use R1 as temp, won't work!) |
|
2058 |
__ compiler_fast_lock_object(r_oop, r_box, r_tmp1, r_tmp2); |
|
2059 |
__ z_bre(done); |
|
2060 |
||
2061 |
//------------------------------------------------------------------------- |
|
2062 |
// None of the above fast optimizations worked so we have to get into the |
|
2063 |
// slow case of monitor enter. Inline a special case of call_VM that |
|
2064 |
// disallows any pending_exception. |
|
2065 |
//------------------------------------------------------------------------- |
|
2066 |
||
2067 |
Register oldSP = Z_R11; |
|
2068 |
||
2069 |
__ z_lgr(oldSP, Z_SP); |
|
2070 |
||
2071 |
RegisterSaver::save_live_registers(masm, RegisterSaver::arg_registers); |
|
2072 |
||
2073 |
// Prepare arguments for call. |
|
2074 |
__ z_lg(Z_ARG1, 0, Z_ARG2); // Ynboxed class mirror or unboxed object. |
|
2075 |
__ add2reg(Z_ARG2, lock_offset, oldSP); |
|
2076 |
__ z_lgr(Z_ARG3, Z_thread); |
|
2077 |
||
2078 |
__ set_last_Java_frame(oldSP, Z_R10 /* gc map pc */); |
|
2079 |
||
2080 |
// Do the call. |
|
2081 |
__ load_const_optimized(Z_R1_scratch, CAST_FROM_FN_PTR(address, SharedRuntime::complete_monitor_locking_C)); |
|
2082 |
__ call(Z_R1_scratch); |
|
2083 |
||
2084 |
__ reset_last_Java_frame(); |
|
2085 |
||
2086 |
RegisterSaver::restore_live_registers(masm, RegisterSaver::arg_registers); |
|
2087 |
#ifdef ASSERT |
|
2088 |
{ Label L;
|
|
2089 |
__ load_and_test_long(Z_R0, Address(Z_thread, Thread::pending_exception_offset())); |
|
2090 |
__ z_bre(L); |
|
2091 |
__ stop("no pending exception allowed on exit from IR::monitorenter");
|
|
2092 |
__ bind(L); |
|
2093 |
} |
|
2094 |
#endif |
|
2095 |
__ bind(done); |
|
2096 |
} // lock for synchronized methods |
|
2097 |
||
2098 |
||
2099 |
////////////////////////////////////////////////////////////////////// |
|
2100 |
// Finally just about ready to make the JNI call. |
|
2101 |
////////////////////////////////////////////////////////////////////// |
|
2102 |
||
2103 |
// Use that pc we placed in Z_R10 a while back as the current frame anchor. |
|
2104 |
__ set_last_Java_frame(Z_SP, Z_R10); |
|
2105 |
||
2106 |
// Transition from _thread_in_Java to _thread_in_native. |
|
2107 |
__ set_thread_state(_thread_in_native); |
|
2108 |
||
2109 |
||
2110 |
////////////////////////////////////////////////////////////////////// |
|
2111 |
// This is the JNI call. |
|
2112 |
////////////////////////////////////////////////////////////////////// |
|
2113 |
||
2114 |
__ call_c(native_func); |
|
2115 |
||
2116 |
||
2117 |
////////////////////////////////////////////////////////////////////// |
|
2118 |
// We have survived the call once we reach here. |
|
2119 |
////////////////////////////////////////////////////////////////////// |
|
2120 |
||
2121 |
||
2122 |
//-------------------------------------------------------------------- |
|
2123 |
// Unpack native results. |
|
2124 |
//-------------------------------------------------------------------- |
|
2125 |
// For int-types, we do any needed sign-extension required. |
|
2126 |
// Care must be taken that the return value (in Z_ARG1 = Z_RET = Z_R2 |
|
2127 |
// or in Z_FARG0 = Z_FRET = Z_F0) will survive any VM calls for |
|
2128 |
// blocking or unlocking. |
|
2129 |
// An OOP result (handle) is done specially in the slow-path code. |
|
2130 |
//-------------------------------------------------------------------- |
|
|
49368
2ed1c37df3a5
8197405: Improve messages of AbstractMethodErrors and IncompatibleClassChangeErrors.
goetz
parents:
48557
diff
changeset
|
2131 |
switch (ret_type) {
|
| 42065 | 2132 |
case T_VOID: break; // Nothing to do! |
2133 |
case T_FLOAT: break; // Got it where we want it (unless slow-path) |
|
2134 |
case T_DOUBLE: break; // Got it where we want it (unless slow-path) |
|
2135 |
case T_LONG: break; // Got it where we want it (unless slow-path) |
|
2136 |
case T_OBJECT: break; // Really a handle. |
|
2137 |
// Cannot de-handlize until after reclaiming jvm_lock. |
|
2138 |
case T_ARRAY: break; |
|
2139 |
||
2140 |
case T_BOOLEAN: // 0 -> false(0); !0 -> true(1) |
|
2141 |
__ z_lngfr(Z_RET, Z_RET); // Force sign bit on except for zero. |
|
2142 |
__ z_srlg(Z_RET, Z_RET, 63); // Shift sign bit into least significant pos. |
|
2143 |
break; |
|
2144 |
case T_BYTE: __ z_lgbr(Z_RET, Z_RET); break; // sign extension |
|
2145 |
case T_CHAR: __ z_llghr(Z_RET, Z_RET); break; // unsigned result |
|
2146 |
case T_SHORT: __ z_lghr(Z_RET, Z_RET); break; // sign extension |
|
2147 |
case T_INT: __ z_lgfr(Z_RET, Z_RET); break; // sign-extend for beauty. |
|
2148 |
||
2149 |
default: |
|
2150 |
ShouldNotReachHere(); |
|
2151 |
break; |
|
2152 |
} |
|
2153 |
||
2154 |
||
2155 |
// Switch thread to "native transition" state before reading the synchronization state. |
|
2156 |
// This additional state is necessary because reading and testing the synchronization |
|
2157 |
// state is not atomic w.r.t. GC, as this scenario demonstrates: |
|
2158 |
// - Java thread A, in _thread_in_native state, loads _not_synchronized and is preempted. |
|
2159 |
// - VM thread changes sync state to synchronizing and suspends threads for GC. |
|
2160 |
// - Thread A is resumed to finish this native method, but doesn't block here since it |
|
2161 |
// didn't see any synchronization in progress, and escapes. |
|
2162 |
||
2163 |
// Transition from _thread_in_native to _thread_in_native_trans. |
|
2164 |
__ set_thread_state(_thread_in_native_trans); |
|
2165 |
||
2166 |
// Safepoint synchronization |
|
2167 |
//-------------------------------------------------------------------- |
|
2168 |
// Must we block? |
|
2169 |
//-------------------------------------------------------------------- |
|
2170 |
// Block, if necessary, before resuming in _thread_in_Java state. |
|
2171 |
// In order for GC to work, don't clear the last_Java_sp until after blocking. |
|
2172 |
//-------------------------------------------------------------------- |
|
2173 |
Label after_transition; |
|
2174 |
{
|
|
2175 |
Label no_block, sync; |
|
2176 |
||
2177 |
save_native_result(masm, ret_type, workspace_slot_offset); // Make Z_R2 available as work reg. |
|
2178 |
||
| 52460 | 2179 |
// Force this write out before the read below. |
2180 |
__ z_fence(); |
|
|
51996
84743156e780
8188764: Obsolete AssumeMP and then remove all support for non-MP builds
dholmes
parents:
51966
diff
changeset
|
2181 |
|
|
48332
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
2182 |
__ safepoint_poll(sync, Z_R1); |
| 42065 | 2183 |
|
2184 |
__ load_and_test_int(Z_R0, Address(Z_thread, JavaThread::suspend_flags_offset())); |
|
2185 |
__ z_bre(no_block); |
|
2186 |
||
2187 |
// Block. Save any potential method result value before the operation and |
|
2188 |
// use a leaf call to leave the last_Java_frame setup undisturbed. Doing this |
|
2189 |
// lets us share the oopMap we used when we went native rather than create |
|
2190 |
// a distinct one for this pc. |
|
2191 |
// |
|
2192 |
__ bind(sync); |
|
2193 |
__ z_acquire(); |
|
2194 |
||
2195 |
address entry_point = is_critical_native ? CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans_and_transition) |
|
2196 |
: CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans); |
|
2197 |
||
2198 |
__ call_VM_leaf(entry_point, Z_thread); |
|
2199 |
||
2200 |
if (is_critical_native) {
|
|
2201 |
restore_native_result(masm, ret_type, workspace_slot_offset); |
|
2202 |
__ z_bru(after_transition); // No thread state transition here. |
|
2203 |
} |
|
2204 |
__ bind(no_block); |
|
2205 |
restore_native_result(masm, ret_type, workspace_slot_offset); |
|
2206 |
} |
|
2207 |
||
2208 |
//-------------------------------------------------------------------- |
|
2209 |
// Thread state is thread_in_native_trans. Any safepoint blocking has |
|
2210 |
// already happened so we can now change state to _thread_in_Java. |
|
2211 |
//-------------------------------------------------------------------- |
|
2212 |
// Transition from _thread_in_native_trans to _thread_in_Java. |
|
2213 |
__ set_thread_state(_thread_in_Java); |
|
2214 |
__ bind(after_transition); |
|
2215 |
||
2216 |
||
2217 |
//-------------------------------------------------------------------- |
|
2218 |
// Reguard any pages if necessary. |
|
2219 |
// Protect native result from being destroyed. |
|
2220 |
//-------------------------------------------------------------------- |
|
2221 |
||
2222 |
Label no_reguard; |
|
2223 |
||
2224 |
__ z_cli(Address(Z_thread, JavaThread::stack_guard_state_offset() + in_ByteSize(sizeof(JavaThread::StackGuardState) - 1)), |
|
2225 |
JavaThread::stack_guard_yellow_reserved_disabled); |
|
2226 |
||
2227 |
__ z_bre(no_reguard); |
|
2228 |
||
2229 |
save_native_result(masm, ret_type, workspace_slot_offset); |
|
2230 |
__ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages), Z_method); |
|
2231 |
restore_native_result(masm, ret_type, workspace_slot_offset); |
|
2232 |
||
2233 |
__ bind(no_reguard); |
|
2234 |
||
2235 |
||
2236 |
// Synchronized methods (slow path only) |
|
2237 |
// No pending exceptions for now. |
|
2238 |
//-------------------------------------------------------------------- |
|
2239 |
// Handle possibly pending exception (will unlock if necessary). |
|
2240 |
// Native result is, if any is live, in Z_FRES or Z_RES. |
|
2241 |
//-------------------------------------------------------------------- |
|
2242 |
// Unlock |
|
2243 |
//-------------------------------------------------------------------- |
|
2244 |
if (method->is_synchronized()) {
|
|
2245 |
const Register r_oop = Z_R11; |
|
2246 |
const Register r_box = Z_R12; |
|
2247 |
const Register r_tmp1 = Z_R13; |
|
2248 |
const Register r_tmp2 = Z_R7; |
|
2249 |
Label done; |
|
2250 |
||
2251 |
// Get unboxed oop of class mirror or object ... |
|
2252 |
int offset = method_is_static ? klass_offset : receiver_offset; |
|
2253 |
||
2254 |
assert(offset != -1, ""); |
|
2255 |
__ z_lg(r_oop, offset, Z_SP); |
|
2256 |
||
2257 |
// ... and address of lock object box. |
|
2258 |
__ add2reg(r_box, lock_offset, Z_SP); |
|
2259 |
||
2260 |
// Try fastpath for unlocking. |
|
2261 |
__ compiler_fast_unlock_object(r_oop, r_box, r_tmp1, r_tmp2); // Don't use R1 as temp. |
|
2262 |
__ z_bre(done); |
|
2263 |
||
2264 |
// Slow path for unlocking. |
|
2265 |
// Save and restore any potential method result value around the unlocking operation. |
|
2266 |
const Register R_exc = Z_R11; |
|
2267 |
||
2268 |
save_native_result(masm, ret_type, workspace_slot_offset); |
|
2269 |
||
2270 |
// Must save pending exception around the slow-path VM call. Since it's a |
|
2271 |
// leaf call, the pending exception (if any) can be kept in a register. |
|
2272 |
__ z_lg(R_exc, Address(Z_thread, Thread::pending_exception_offset())); |
|
2273 |
assert(R_exc->is_nonvolatile(), "exception register must be non-volatile"); |
|
2274 |
||
2275 |
// Must clear pending-exception before re-entering the VM. Since this is |
|
2276 |
// a leaf call, pending-exception-oop can be safely kept in a register. |
|
2277 |
__ clear_mem(Address(Z_thread, Thread::pending_exception_offset()), sizeof(intptr_t)); |
|
2278 |
||
2279 |
// Inline a special case of call_VM that disallows any pending_exception. |
|
2280 |
||
2281 |
// Get locked oop from the handle we passed to jni. |
|
2282 |
__ z_lg(Z_ARG1, offset, Z_SP); |
|
2283 |
__ add2reg(Z_ARG2, lock_offset, Z_SP); |
|
2284 |
__ z_lgr(Z_ARG3, Z_thread); |
|
2285 |
||
2286 |
__ load_const_optimized(Z_R1_scratch, CAST_FROM_FN_PTR(address, SharedRuntime::complete_monitor_unlocking_C)); |
|
2287 |
||
2288 |
__ call(Z_R1_scratch); |
|
2289 |
||
2290 |
#ifdef ASSERT |
|
2291 |
{
|
|
2292 |
Label L; |
|
2293 |
__ load_and_test_long(Z_R0, Address(Z_thread, Thread::pending_exception_offset())); |
|
2294 |
__ z_bre(L); |
|
2295 |
__ stop("no pending exception allowed on exit from IR::monitorexit");
|
|
2296 |
__ bind(L); |
|
2297 |
} |
|
2298 |
#endif |
|
2299 |
||
2300 |
// Check_forward_pending_exception jump to forward_exception if any pending |
|
2301 |
// exception is set. The forward_exception routine expects to see the |
|
2302 |
// exception in pending_exception and not in a register. Kind of clumsy, |
|
2303 |
// since all folks who branch to forward_exception must have tested |
|
2304 |
// pending_exception first and hence have it in a register already. |
|
2305 |
__ z_stg(R_exc, Address(Z_thread, Thread::pending_exception_offset())); |
|
2306 |
restore_native_result(masm, ret_type, workspace_slot_offset); |
|
2307 |
__ z_bru(done); |
|
2308 |
__ z_illtrap(0x66); |
|
2309 |
||
2310 |
__ bind(done); |
|
2311 |
} |
|
2312 |
||
2313 |
||
2314 |
//-------------------------------------------------------------------- |
|
2315 |
// Clear "last Java frame" SP and PC. |
|
2316 |
//-------------------------------------------------------------------- |
|
2317 |
__ verify_thread(); // Z_thread must be correct. |
|
2318 |
||
2319 |
__ reset_last_Java_frame(); |
|
2320 |
||
|
44406
a46a6c4d1dd9
8176100: [REDO][REDO] G1 Needs pre barrier on dereference of weak JNI handles
mgerdin
parents:
44093
diff
changeset
|
2321 |
// Unpack oop result, e.g. JNIHandles::resolve result. |
|
58356
feff88c68082
8231448: s390 and ppc - replace JVM type comparisons to T_OBJECT and T_ARRAY with call to is_reference_type
mbaesken
parents:
57710
diff
changeset
|
2322 |
if (is_reference_type(ret_type)) {
|
|
44406
a46a6c4d1dd9
8176100: [REDO][REDO] G1 Needs pre barrier on dereference of weak JNI handles
mgerdin
parents:
44093
diff
changeset
|
2323 |
__ resolve_jobject(Z_RET, /* tmp1 */ Z_R13, /* tmp2 */ Z_R7); |
| 42065 | 2324 |
} |
2325 |
||
2326 |
if (CheckJNICalls) {
|
|
2327 |
// clear_pending_jni_exception_check |
|
2328 |
__ clear_mem(Address(Z_thread, JavaThread::pending_jni_exception_check_fn_offset()), sizeof(oop)); |
|
2329 |
} |
|
2330 |
||
2331 |
// Reset handle block. |
|
2332 |
if (!is_critical_native) {
|
|
2333 |
__ z_lg(Z_R1_scratch, Address(Z_thread, JavaThread::active_handles_offset())); |
|
2334 |
__ clear_mem(Address(Z_R1_scratch, JNIHandleBlock::top_offset_in_bytes()), 4); |
|
2335 |
||
2336 |
// Check for pending exceptions. |
|
2337 |
__ load_and_test_long(Z_R0, Address(Z_thread, Thread::pending_exception_offset())); |
|
2338 |
__ z_brne(handle_pending_exception); |
|
2339 |
} |
|
2340 |
||
2341 |
||
2342 |
////////////////////////////////////////////////////////////////////// |
|
2343 |
// Return |
|
2344 |
////////////////////////////////////////////////////////////////////// |
|
2345 |
||
2346 |
||
2347 |
#ifndef USE_RESIZE_FRAME |
|
2348 |
__ pop_frame(); // Pop wrapper frame. |
|
2349 |
#else |
|
2350 |
__ resize_frame(frame_size_in_bytes, Z_R0_scratch); // Revert stack extension. |
|
2351 |
#endif |
|
2352 |
__ restore_return_pc(); // This is the way back to the caller. |
|
2353 |
__ z_br(Z_R14); |
|
2354 |
||
2355 |
||
2356 |
////////////////////////////////////////////////////////////////////// |
|
2357 |
// Out-of-line calls to the runtime. |
|
2358 |
////////////////////////////////////////////////////////////////////// |
|
2359 |
||
2360 |
||
2361 |
if (!is_critical_native) {
|
|
2362 |
||
2363 |
//--------------------------------------------------------------------- |
|
2364 |
// Handler for pending exceptions (out-of-line). |
|
2365 |
//--------------------------------------------------------------------- |
|
2366 |
// Since this is a native call, we know the proper exception handler |
|
2367 |
// is the empty function. We just pop this frame and then jump to |
|
2368 |
// forward_exception_entry. Z_R14 will contain the native caller's |
|
2369 |
// return PC. |
|
2370 |
__ bind(handle_pending_exception); |
|
2371 |
__ pop_frame(); |
|
2372 |
__ load_const_optimized(Z_R1_scratch, StubRoutines::forward_exception_entry()); |
|
2373 |
__ restore_return_pc(); |
|
2374 |
__ z_br(Z_R1_scratch); |
|
2375 |
||
2376 |
//--------------------------------------------------------------------- |
|
2377 |
// Handler for a cache miss (out-of-line) |
|
2378 |
//--------------------------------------------------------------------- |
|
2379 |
__ call_ic_miss_handler(ic_miss, 0x77, 0, Z_R1_scratch); |
|
2380 |
} |
|
2381 |
__ flush(); |
|
2382 |
||
2383 |
||
2384 |
////////////////////////////////////////////////////////////////////// |
|
2385 |
// end of code generation |
|
2386 |
////////////////////////////////////////////////////////////////////// |
|
2387 |
||
2388 |
||
2389 |
nmethod *nm = nmethod::new_native_nmethod(method, |
|
2390 |
compile_id, |
|
2391 |
masm->code(), |
|
2392 |
(int)(wrapper_VEPStart-wrapper_CodeStart), |
|
2393 |
(int)(wrapper_FrameDone-wrapper_CodeStart), |
|
2394 |
stack_slots / VMRegImpl::slots_per_word, |
|
2395 |
(method_is_static ? in_ByteSize(klass_offset) : in_ByteSize(receiver_offset)), |
|
2396 |
in_ByteSize(lock_offset), |
|
2397 |
oop_maps); |
|
2398 |
||
2399 |
if (is_critical_native) {
|
|
2400 |
nm->set_lazy_critical_native(true); |
|
2401 |
} |
|
2402 |
||
2403 |
return nm; |
|
2404 |
#else |
|
2405 |
ShouldNotReachHere(); |
|
2406 |
return NULL; |
|
2407 |
#endif // COMPILER2 |
|
2408 |
} |
|
2409 |
||
2410 |
static address gen_c2i_adapter(MacroAssembler *masm, |
|
2411 |
int total_args_passed, |
|
2412 |
int comp_args_on_stack, |
|
2413 |
const BasicType *sig_bt, |
|
2414 |
const VMRegPair *regs, |
|
2415 |
Label &skip_fixup) {
|
|
2416 |
// Before we get into the guts of the C2I adapter, see if we should be here |
|
2417 |
// at all. We've come from compiled code and are attempting to jump to the |
|
2418 |
// interpreter, which means the caller made a static call to get here |
|
2419 |
// (vcalls always get a compiled target if there is one). Check for a |
|
2420 |
// compiled target. If there is one, we need to patch the caller's call. |
|
2421 |
||
2422 |
// These two defs MUST MATCH code in gen_i2c2i_adapter! |
|
2423 |
const Register ientry = Z_R11; |
|
2424 |
const Register code = Z_R11; |
|
2425 |
||
2426 |
address c2i_entrypoint; |
|
2427 |
Label patch_callsite; |
|
2428 |
||
2429 |
// Regular (verified) c2i entry point. |
|
2430 |
c2i_entrypoint = __ pc(); |
|
2431 |
||
2432 |
// Call patching needed? |
|
2433 |
__ load_and_test_long(Z_R0_scratch, method_(code)); |
|
2434 |
__ z_lg(ientry, method_(interpreter_entry)); // Preload interpreter entry (also if patching). |
|
2435 |
__ z_brne(patch_callsite); // Patch required if code != NULL (compiled target exists). |
|
2436 |
||
2437 |
__ bind(skip_fixup); // Return point from patch_callsite. |
|
2438 |
||
2439 |
// Since all args are passed on the stack, total_args_passed*wordSize is the |
|
2440 |
// space we need. We need ABI scratch area but we use the caller's since |
|
2441 |
// it has already been allocated. |
|
2442 |
||
2443 |
const int abi_scratch = frame::z_top_ijava_frame_abi_size; |
|
|
46620
750c6edff33b
8178500: Replace usages of round_to and round_down with align_up and align_down
stefank
parents:
44406
diff
changeset
|
2444 |
int extraspace = align_up(total_args_passed, 2)*wordSize + abi_scratch; |
| 42065 | 2445 |
Register sender_SP = Z_R10; |
2446 |
Register value = Z_R12; |
|
2447 |
||
2448 |
// Remember the senderSP so we can pop the interpreter arguments off of the stack. |
|
2449 |
// In addition, frame manager expects initial_caller_sp in Z_R10. |
|
2450 |
__ z_lgr(sender_SP, Z_SP); |
|
2451 |
||
2452 |
// This should always fit in 14 bit immediate. |
|
2453 |
__ resize_frame(-extraspace, Z_R0_scratch); |
|
2454 |
||
2455 |
// We use the caller's ABI scratch area (out_preserved_stack_slots) for the initial |
|
2456 |
// args. This essentially moves the callers ABI scratch area from the top to the |
|
2457 |
// bottom of the arg area. |
|
2458 |
||
2459 |
int st_off = extraspace - wordSize; |
|
2460 |
||
2461 |
// Now write the args into the outgoing interpreter space. |
|
2462 |
for (int i = 0; i < total_args_passed; i++) {
|
|
2463 |
VMReg r_1 = regs[i].first(); |
|
2464 |
VMReg r_2 = regs[i].second(); |
|
2465 |
if (!r_1->is_valid()) {
|
|
2466 |
assert(!r_2->is_valid(), ""); |
|
2467 |
continue; |
|
2468 |
} |
|
2469 |
if (r_1->is_stack()) {
|
|
2470 |
// The calling convention produces OptoRegs that ignore the preserve area (abi scratch). |
|
2471 |
// We must account for it here. |
|
2472 |
int ld_off = (r_1->reg2stack() + SharedRuntime::out_preserve_stack_slots()) * VMRegImpl::stack_slot_size; |
|
2473 |
||
2474 |
if (!r_2->is_valid()) {
|
|
2475 |
__ z_mvc(Address(Z_SP, st_off), Address(sender_SP, ld_off), sizeof(void*)); |
|
2476 |
} else {
|
|
2477 |
// longs are given 2 64-bit slots in the interpreter, |
|
2478 |
// but the data is passed in only 1 slot. |
|
2479 |
if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) {
|
|
2480 |
#ifdef ASSERT |
|
2481 |
__ clear_mem(Address(Z_SP, st_off), sizeof(void *)); |
|
2482 |
#endif |
|
2483 |
st_off -= wordSize; |
|
2484 |
} |
|
2485 |
__ z_mvc(Address(Z_SP, st_off), Address(sender_SP, ld_off), sizeof(void*)); |
|
2486 |
} |
|
2487 |
} else {
|
|
2488 |
if (r_1->is_Register()) {
|
|
2489 |
if (!r_2->is_valid()) {
|
|
2490 |
__ z_st(r_1->as_Register(), st_off, Z_SP); |
|
2491 |
} else {
|
|
2492 |
// longs are given 2 64-bit slots in the interpreter, but the |
|
2493 |
// data is passed in only 1 slot. |
|
2494 |
if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) {
|
|
2495 |
#ifdef ASSERT |
|
2496 |
__ clear_mem(Address(Z_SP, st_off), sizeof(void *)); |
|
2497 |
#endif |
|
2498 |
st_off -= wordSize; |
|
2499 |
} |
|
2500 |
__ z_stg(r_1->as_Register(), st_off, Z_SP); |
|
2501 |
} |
|
2502 |
} else {
|
|
2503 |
assert(r_1->is_FloatRegister(), ""); |
|
2504 |
if (!r_2->is_valid()) {
|
|
2505 |
__ z_ste(r_1->as_FloatRegister(), st_off, Z_SP); |
|
2506 |
} else {
|
|
2507 |
// In 64bit, doubles are given 2 64-bit slots in the interpreter, but the |
|
2508 |
// data is passed in only 1 slot. |
|
2509 |
// One of these should get known junk... |
|
2510 |
#ifdef ASSERT |
|
2511 |
__ z_lzdr(Z_F1); |
|
2512 |
__ z_std(Z_F1, st_off, Z_SP); |
|
2513 |
#endif |
|
2514 |
st_off-=wordSize; |
|
2515 |
__ z_std(r_1->as_FloatRegister(), st_off, Z_SP); |
|
2516 |
} |
|
2517 |
} |
|
2518 |
} |
|
2519 |
st_off -= wordSize; |
|
2520 |
} |
|
2521 |
||
2522 |
||
2523 |
// Jump to the interpreter just as if interpreter was doing it. |
|
2524 |
__ add2reg(Z_esp, st_off, Z_SP); |
|
2525 |
||
2526 |
// Frame_manager expects initial_caller_sp (= SP without resize by c2i) in Z_R10. |
|
2527 |
__ z_br(ientry); |
|
2528 |
||
2529 |
||
2530 |
// Prevent illegal entry to out-of-line code. |
|
2531 |
__ z_illtrap(0x22); |
|
2532 |
||
2533 |
// Generate out-of-line runtime call to patch caller, |
|
2534 |
// then continue as interpreted. |
|
2535 |
||
2536 |
// IF you lose the race you go interpreted. |
|
2537 |
// We don't see any possible endless c2i -> i2c -> c2i ... |
|
2538 |
// transitions no matter how rare. |
|
2539 |
__ bind(patch_callsite); |
|
2540 |
||
2541 |
RegisterSaver::save_live_registers(masm, RegisterSaver::arg_registers); |
|
2542 |
__ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::fixup_callers_callsite), Z_method, Z_R14); |
|
2543 |
RegisterSaver::restore_live_registers(masm, RegisterSaver::arg_registers); |
|
2544 |
__ z_bru(skip_fixup); |
|
2545 |
||
2546 |
// end of out-of-line code |
|
2547 |
||
2548 |
return c2i_entrypoint; |
|
2549 |
} |
|
2550 |
||
2551 |
// On entry, the following registers are set |
|
2552 |
// |
|
2553 |
// Z_thread r8 - JavaThread* |
|
2554 |
// Z_method r9 - callee's method (method to be invoked) |
|
2555 |
// Z_esp r7 - operand (or expression) stack pointer of caller. one slot above last arg. |
|
2556 |
// Z_SP r15 - SP prepared by call stub such that caller's outgoing args are near top |
|
2557 |
// |
|
2558 |
void SharedRuntime::gen_i2c_adapter(MacroAssembler *masm, |
|
2559 |
int total_args_passed, |
|
2560 |
int comp_args_on_stack, |
|
2561 |
const BasicType *sig_bt, |
|
2562 |
const VMRegPair *regs) {
|
|
2563 |
const Register value = Z_R12; |
|
2564 |
const Register ld_ptr= Z_esp; |
|
2565 |
||
2566 |
int ld_offset = total_args_passed * wordSize; |
|
2567 |
||
2568 |
// Cut-out for having no stack args. |
|
2569 |
if (comp_args_on_stack) {
|
|
2570 |
// Sig words on the stack are greater than VMRegImpl::stack0. Those in |
|
2571 |
// registers are below. By subtracting stack0, we either get a negative |
|
2572 |
// number (all values in registers) or the maximum stack slot accessed. |
|
2573 |
// Convert VMRegImpl (4 byte) stack slots to words. |
|
|
46620
750c6edff33b
8178500: Replace usages of round_to and round_down with align_up and align_down
stefank
parents:
44406
diff
changeset
|
2574 |
int comp_words_on_stack = align_up(comp_args_on_stack*VMRegImpl::stack_slot_size, wordSize)>>LogBytesPerWord; |
| 42065 | 2575 |
// Round up to miminum stack alignment, in wordSize |
|
46620
750c6edff33b
8178500: Replace usages of round_to and round_down with align_up and align_down
stefank
parents:
44406
diff
changeset
|
2576 |
comp_words_on_stack = align_up(comp_words_on_stack, 2); |
| 42065 | 2577 |
|
2578 |
__ resize_frame(-comp_words_on_stack*wordSize, Z_R0_scratch); |
|
2579 |
} |
|
2580 |
||
2581 |
// Now generate the shuffle code. Pick up all register args and move the |
|
2582 |
// rest through register value=Z_R12. |
|
2583 |
for (int i = 0; i < total_args_passed; i++) {
|
|
2584 |
if (sig_bt[i] == T_VOID) {
|
|
2585 |
assert(i > 0 && (sig_bt[i-1] == T_LONG || sig_bt[i-1] == T_DOUBLE), "missing half"); |
|
2586 |
continue; |
|
2587 |
} |
|
2588 |
||
2589 |
// Pick up 0, 1 or 2 words from ld_ptr. |
|
2590 |
assert(!regs[i].second()->is_valid() || regs[i].first()->next() == regs[i].second(), |
|
2591 |
"scrambled load targets?"); |
|
2592 |
VMReg r_1 = regs[i].first(); |
|
2593 |
VMReg r_2 = regs[i].second(); |
|
2594 |
if (!r_1->is_valid()) {
|
|
2595 |
assert(!r_2->is_valid(), ""); |
|
2596 |
continue; |
|
2597 |
} |
|
2598 |
if (r_1->is_FloatRegister()) {
|
|
2599 |
if (!r_2->is_valid()) {
|
|
2600 |
__ z_le(r_1->as_FloatRegister(), ld_offset, ld_ptr); |
|
2601 |
ld_offset-=wordSize; |
|
2602 |
} else {
|
|
2603 |
// Skip the unused interpreter slot. |
|
2604 |
__ z_ld(r_1->as_FloatRegister(), ld_offset - wordSize, ld_ptr); |
|
2605 |
ld_offset -= 2 * wordSize; |
|
2606 |
} |
|
2607 |
} else {
|
|
2608 |
if (r_1->is_stack()) {
|
|
2609 |
// Must do a memory to memory move. |
|
2610 |
int st_off = (r_1->reg2stack() + SharedRuntime::out_preserve_stack_slots()) * VMRegImpl::stack_slot_size; |
|
2611 |
||
2612 |
if (!r_2->is_valid()) {
|
|
2613 |
__ z_mvc(Address(Z_SP, st_off), Address(ld_ptr, ld_offset), sizeof(void*)); |
|
2614 |
} else {
|
|
2615 |
// In 64bit, longs are given 2 64-bit slots in the interpreter, but the |
|
2616 |
// data is passed in only 1 slot. |
|
2617 |
if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) {
|
|
2618 |
ld_offset -= wordSize; |
|
2619 |
} |
|
2620 |
__ z_mvc(Address(Z_SP, st_off), Address(ld_ptr, ld_offset), sizeof(void*)); |
|
2621 |
} |
|
2622 |
} else {
|
|
2623 |
if (!r_2->is_valid()) {
|
|
2624 |
// Not sure we need to do this but it shouldn't hurt. |
|
|
58356
feff88c68082
8231448: s390 and ppc - replace JVM type comparisons to T_OBJECT and T_ARRAY with call to is_reference_type
mbaesken
parents:
57710
diff
changeset
|
2625 |
if (is_reference_type(sig_bt[i]) || sig_bt[i] == T_ADDRESS) {
|
| 42065 | 2626 |
__ z_lg(r_1->as_Register(), ld_offset, ld_ptr); |
2627 |
} else {
|
|
2628 |
__ z_l(r_1->as_Register(), ld_offset, ld_ptr); |
|
2629 |
} |
|
2630 |
} else {
|
|
2631 |
// In 64bit, longs are given 2 64-bit slots in the interpreter, but the |
|
2632 |
// data is passed in only 1 slot. |
|
2633 |
if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) {
|
|
2634 |
ld_offset -= wordSize; |
|
2635 |
} |
|
2636 |
__ z_lg(r_1->as_Register(), ld_offset, ld_ptr); |
|
2637 |
} |
|
2638 |
} |
|
2639 |
ld_offset -= wordSize; |
|
2640 |
} |
|
2641 |
} |
|
2642 |
||
2643 |
// Jump to the compiled code just as if compiled code was doing it. |
|
2644 |
// load target address from method oop: |
|
2645 |
__ z_lg(Z_R1_scratch, Address(Z_method, Method::from_compiled_offset())); |
|
2646 |
||
2647 |
// Store method oop into thread->callee_target. |
|
2648 |
// 6243940: We might end up in handle_wrong_method if |
|
2649 |
// the callee is deoptimized as we race thru here. If that |
|
2650 |
// happens we don't want to take a safepoint because the |
|
2651 |
// caller frame will look interpreted and arguments are now |
|
2652 |
// "compiled" so it is much better to make this transition |
|
2653 |
// invisible to the stack walking code. Unfortunately, if |
|
2654 |
// we try and find the callee by normal means a safepoint |
|
2655 |
// is possible. So we stash the desired callee in the thread |
|
2656 |
// and the vm will find it there should this case occur. |
|
2657 |
__ z_stg(Z_method, thread_(callee_target)); |
|
2658 |
||
2659 |
__ z_br(Z_R1_scratch); |
|
2660 |
} |
|
2661 |
||
2662 |
AdapterHandlerEntry* SharedRuntime::generate_i2c2i_adapters(MacroAssembler *masm, |
|
2663 |
int total_args_passed, |
|
2664 |
int comp_args_on_stack, |
|
2665 |
const BasicType *sig_bt, |
|
2666 |
const VMRegPair *regs, |
|
2667 |
AdapterFingerPrint* fingerprint) {
|
|
2668 |
__ align(CodeEntryAlignment); |
|
2669 |
address i2c_entry = __ pc(); |
|
2670 |
gen_i2c_adapter(masm, total_args_passed, comp_args_on_stack, sig_bt, regs); |
|
2671 |
||
2672 |
address c2i_unverified_entry; |
|
2673 |
||
2674 |
Label skip_fixup; |
|
2675 |
{
|
|
2676 |
Label ic_miss; |
|
| 48557 | 2677 |
const int klass_offset = oopDesc::klass_offset_in_bytes(); |
2678 |
const int holder_klass_offset = CompiledICHolder::holder_klass_offset(); |
|
2679 |
const int holder_metadata_offset = CompiledICHolder::holder_metadata_offset(); |
|
| 42065 | 2680 |
|
2681 |
// Out-of-line call to ic_miss handler. |
|
2682 |
__ call_ic_miss_handler(ic_miss, 0x11, 0, Z_R1_scratch); |
|
2683 |
||
2684 |
// Unverified Entry Point UEP |
|
2685 |
__ align(CodeEntryAlignment); |
|
2686 |
c2i_unverified_entry = __ pc(); |
|
2687 |
||
2688 |
// Check the pointers. |
|
2689 |
if (!ImplicitNullChecks || MacroAssembler::needs_explicit_null_check(klass_offset)) {
|
|
2690 |
__ z_ltgr(Z_ARG1, Z_ARG1); |
|
2691 |
__ z_bre(ic_miss); |
|
2692 |
} |
|
2693 |
__ verify_oop(Z_ARG1); |
|
2694 |
||
2695 |
// Check ic: object class <-> cached class |
|
2696 |
// Compress cached class for comparison. That's more efficient. |
|
2697 |
if (UseCompressedClassPointers) {
|
|
2698 |
__ z_lg(Z_R11, holder_klass_offset, Z_method); // Z_R11 is overwritten a few instructions down anyway. |
|
2699 |
__ compare_klass_ptr(Z_R11, klass_offset, Z_ARG1, false); // Cached class can't be zero. |
|
2700 |
} else {
|
|
2701 |
__ z_clc(klass_offset, sizeof(void *)-1, Z_ARG1, holder_klass_offset, Z_method); |
|
2702 |
} |
|
2703 |
__ z_brne(ic_miss); // Cache miss: call runtime to handle this. |
|
2704 |
||
2705 |
// This def MUST MATCH code in gen_c2i_adapter! |
|
2706 |
const Register code = Z_R11; |
|
2707 |
||
| 48557 | 2708 |
__ z_lg(Z_method, holder_metadata_offset, Z_method); |
| 42065 | 2709 |
__ load_and_test_long(Z_R0, method_(code)); |
2710 |
__ z_brne(ic_miss); // Cache miss: call runtime to handle this. |
|
2711 |
||
2712 |
// Fallthru to VEP. Duplicate LTG, but saved taken branch. |
|
2713 |
} |
|
2714 |
||
|
55343
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2715 |
address c2i_entry = __ pc(); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2716 |
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2717 |
// Class initialization barrier for static methods |
|
55749
cff8aad2593f
8227260: JNI upcalls should bypass class initialization barrier in c2i adapter
vlivanov
parents:
55343
diff
changeset
|
2718 |
address c2i_no_clinit_check_entry = NULL; |
|
55343
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2719 |
if (VM_Version::supports_fast_class_init_checks()) {
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2720 |
Label L_skip_barrier; |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2721 |
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2722 |
{ // Bypass the barrier for non-static methods
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2723 |
__ testbit(Address(Z_method, Method::access_flags_offset()), JVM_ACC_STATIC_BIT); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2724 |
__ z_bfalse(L_skip_barrier); // non-static |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2725 |
} |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2726 |
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2727 |
Register klass = Z_R11; |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2728 |
__ load_method_holder(klass, Z_method); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2729 |
__ clinit_barrier(klass, Z_thread, &L_skip_barrier /*L_fast_path*/); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2730 |
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2731 |
__ load_const_optimized(klass, SharedRuntime::get_handle_wrong_method_stub()); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2732 |
__ z_br(klass); |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2733 |
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2734 |
__ bind(L_skip_barrier); |
|
55749
cff8aad2593f
8227260: JNI upcalls should bypass class initialization barrier in c2i adapter
vlivanov
parents:
55343
diff
changeset
|
2735 |
c2i_no_clinit_check_entry = __ pc(); |
|
55343
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2736 |
} |
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2737 |
|
|
03d417fd7d9a
8224827: Implement fast class initialization checks on s390
mdoerr
parents:
54847
diff
changeset
|
2738 |
gen_c2i_adapter(masm, total_args_passed, comp_args_on_stack, sig_bt, regs, skip_fixup); |
| 42065 | 2739 |
|
|
55749
cff8aad2593f
8227260: JNI upcalls should bypass class initialization barrier in c2i adapter
vlivanov
parents:
55343
diff
changeset
|
2740 |
return AdapterHandlerLibrary::new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry, c2i_no_clinit_check_entry); |
| 42065 | 2741 |
} |
2742 |
||
2743 |
// This function returns the adjust size (in number of words) to a c2i adapter |
|
2744 |
// activation for use during deoptimization. |
|
2745 |
// |
|
2746 |
// Actually only compiled frames need to be adjusted, but it |
|
2747 |
// doesn't harm to adjust entry and interpreter frames, too. |
|
2748 |
// |
|
2749 |
int Deoptimization::last_frame_adjust(int callee_parameters, int callee_locals) {
|
|
2750 |
assert(callee_locals >= callee_parameters, |
|
2751 |
"test and remove; got more parms than locals"); |
|
2752 |
// Handle the abi adjustment here instead of doing it in push_skeleton_frames. |
|
2753 |
return (callee_locals - callee_parameters) * Interpreter::stackElementWords + |
|
2754 |
frame::z_parent_ijava_frame_abi_size / BytesPerWord; |
|
2755 |
} |
|
2756 |
||
2757 |
uint SharedRuntime::out_preserve_stack_slots() {
|
|
2758 |
return frame::z_jit_out_preserve_size/VMRegImpl::stack_slot_size; |
|
2759 |
} |
|
2760 |
||
2761 |
// |
|
2762 |
// Frame generation for deopt and uncommon trap blobs. |
|
2763 |
// |
|
2764 |
static void push_skeleton_frame(MacroAssembler* masm, |
|
2765 |
/* Unchanged */ |
|
2766 |
Register frame_sizes_reg, |
|
2767 |
Register pcs_reg, |
|
2768 |
/* Invalidate */ |
|
2769 |
Register frame_size_reg, |
|
2770 |
Register pc_reg) {
|
|
2771 |
BLOCK_COMMENT(" push_skeleton_frame {");
|
|
2772 |
__ z_lg(pc_reg, 0, pcs_reg); |
|
2773 |
__ z_lg(frame_size_reg, 0, frame_sizes_reg); |
|
2774 |
__ z_stg(pc_reg, _z_abi(return_pc), Z_SP); |
|
2775 |
Register fp = pc_reg; |
|
2776 |
__ push_frame(frame_size_reg, fp); |
|
2777 |
#ifdef ASSERT |
|
2778 |
// The magic is required for successful walking skeletal frames. |
|
2779 |
__ load_const_optimized(frame_size_reg/*tmp*/, frame::z_istate_magic_number); |
|
2780 |
__ z_stg(frame_size_reg, _z_ijava_state_neg(magic), fp); |
|
2781 |
// Fill other slots that are supposedly not necessary with eye catchers. |
|
2782 |
__ load_const_optimized(frame_size_reg/*use as tmp*/, 0xdeadbad1); |
|
2783 |
__ z_stg(frame_size_reg, _z_ijava_state_neg(top_frame_sp), fp); |
|
2784 |
// The sender_sp of the bottom frame is set before pushing it. |
|
2785 |
// The sender_sp of non bottom frames is their caller's top_frame_sp, which |
|
2786 |
// is unknown here. Luckily it is not needed before filling the frame in |
|
2787 |
// layout_activation(), we assert this by setting an eye catcher (see |
|
2788 |
// comments on sender_sp in frame_s390.hpp). |
|
2789 |
__ z_stg(frame_size_reg, _z_ijava_state_neg(sender_sp), Z_SP); |
|
2790 |
#endif // ASSERT |
|
2791 |
BLOCK_COMMENT(" } push_skeleton_frame");
|
|
2792 |
} |
|
2793 |
||
2794 |
// Loop through the UnrollBlock info and create new frames. |
|
2795 |
static void push_skeleton_frames(MacroAssembler* masm, bool deopt, |
|
2796 |
/* read */ |
|
2797 |
Register unroll_block_reg, |
|
2798 |
/* invalidate */ |
|
2799 |
Register frame_sizes_reg, |
|
2800 |
Register number_of_frames_reg, |
|
2801 |
Register pcs_reg, |
|
2802 |
Register tmp1, |
|
2803 |
Register tmp2) {
|
|
2804 |
BLOCK_COMMENT("push_skeleton_frames {");
|
|
2805 |
// _number_of_frames is of type int (deoptimization.hpp). |
|
2806 |
__ z_lgf(number_of_frames_reg, |
|
2807 |
Address(unroll_block_reg, Deoptimization::UnrollBlock::number_of_frames_offset_in_bytes())); |
|
2808 |
__ z_lg(pcs_reg, |
|
2809 |
Address(unroll_block_reg, Deoptimization::UnrollBlock::frame_pcs_offset_in_bytes())); |
|
2810 |
__ z_lg(frame_sizes_reg, |
|
2811 |
Address(unroll_block_reg, Deoptimization::UnrollBlock::frame_sizes_offset_in_bytes())); |
|
2812 |
||
2813 |
// stack: (caller_of_deoptee, ...). |
|
2814 |
||
2815 |
// If caller_of_deoptee is a compiled frame, then we extend it to make |
|
2816 |
// room for the callee's locals and the frame::z_parent_ijava_frame_abi. |
|
2817 |
// See also Deoptimization::last_frame_adjust() above. |
|
2818 |
// Note: entry and interpreted frames are adjusted, too. But this doesn't harm. |
|
2819 |
||
2820 |
__ z_lgf(Z_R1_scratch, |
|
2821 |
Address(unroll_block_reg, Deoptimization::UnrollBlock::caller_adjustment_offset_in_bytes())); |
|
2822 |
__ z_lgr(tmp1, Z_SP); // Save the sender sp before extending the frame. |
|
2823 |
__ resize_frame_sub(Z_R1_scratch, tmp2/*tmp*/); |
|
2824 |
// The oldest skeletal frame requires a valid sender_sp to make it walkable |
|
2825 |
// (it is required to find the original pc of caller_of_deoptee if it is marked |
|
2826 |
// for deoptimization - see nmethod::orig_pc_addr()). |
|
2827 |
__ z_stg(tmp1, _z_ijava_state_neg(sender_sp), Z_SP); |
|
2828 |
||
2829 |
// Now push the new interpreter frames. |
|
2830 |
Label loop, loop_entry; |
|
2831 |
||
2832 |
// Make sure that there is at least one entry in the array. |
|
2833 |
DEBUG_ONLY(__ z_ltgr(number_of_frames_reg, number_of_frames_reg)); |
|
2834 |
__ asm_assert_ne("array_size must be > 0", 0x205);
|
|
2835 |
||
2836 |
__ z_bru(loop_entry); |
|
2837 |
||
2838 |
__ bind(loop); |
|
2839 |
||
2840 |
__ add2reg(frame_sizes_reg, wordSize); |
|
2841 |
__ add2reg(pcs_reg, wordSize); |
|
2842 |
||
2843 |
__ bind(loop_entry); |
|
2844 |
||
2845 |
// Allocate a new frame, fill in the pc. |
|
2846 |
push_skeleton_frame(masm, frame_sizes_reg, pcs_reg, tmp1, tmp2); |
|
2847 |
||
2848 |
__ z_aghi(number_of_frames_reg, -1); // Emit AGHI, because it sets the condition code |
|
2849 |
__ z_brne(loop); |
|
2850 |
||
2851 |
// Set the top frame's return pc. |
|
2852 |
__ add2reg(pcs_reg, wordSize); |
|
2853 |
__ z_lg(Z_R0_scratch, 0, pcs_reg); |
|
2854 |
__ z_stg(Z_R0_scratch, _z_abi(return_pc), Z_SP); |
|
2855 |
BLOCK_COMMENT("} push_skeleton_frames");
|
|
2856 |
} |
|
2857 |
||
2858 |
//------------------------------generate_deopt_blob---------------------------- |
|
2859 |
void SharedRuntime::generate_deopt_blob() {
|
|
2860 |
// Allocate space for the code. |
|
2861 |
ResourceMark rm; |
|
2862 |
// Setup code generation tools. |
|
2863 |
CodeBuffer buffer("deopt_blob", 2048, 1024);
|
|
2864 |
InterpreterMacroAssembler* masm = new InterpreterMacroAssembler(&buffer); |
|
2865 |
Label exec_mode_initialized; |
|
2866 |
OopMap* map = NULL; |
|
2867 |
OopMapSet *oop_maps = new OopMapSet(); |
|
2868 |
||
2869 |
unsigned int start_off = __ offset(); |
|
2870 |
Label cont; |
|
2871 |
||
2872 |
// -------------------------------------------------------------------------- |
|
2873 |
// Normal entry (non-exception case) |
|
2874 |
// |
|
2875 |
// We have been called from the deopt handler of the deoptee. |
|
2876 |
// Z_R14 points behind the call in the deopt handler. We adjust |
|
2877 |
// it such that it points to the start of the deopt handler. |
|
2878 |
// The return_pc has been stored in the frame of the deoptee and |
|
2879 |
// will replace the address of the deopt_handler in the call |
|
2880 |
// to Deoptimization::fetch_unroll_info below. |
|
2881 |
// The (int) cast is necessary, because -((unsigned int)14) |
|
2882 |
// is an unsigned int. |
|
2883 |
__ add2reg(Z_R14, -(int)HandlerImpl::size_deopt_handler()); |
|
2884 |
||
2885 |
const Register exec_mode_reg = Z_tmp_1; |
|
2886 |
||
2887 |
// stack: (deoptee, caller of deoptee, ...) |
|
2888 |
||
2889 |
// pushes an "unpack" frame |
|
2890 |
// R14 contains the return address pointing into the deoptimized |
|
2891 |
// nmethod that was valid just before the nmethod was deoptimized. |
|
2892 |
// save R14 into the deoptee frame. the `fetch_unroll_info' |
|
2893 |
// procedure called below will read it from there. |
|
2894 |
map = RegisterSaver::save_live_registers(masm, RegisterSaver::all_registers); |
|
2895 |
||
2896 |
// note the entry point. |
|
2897 |
__ load_const_optimized(exec_mode_reg, Deoptimization::Unpack_deopt); |
|
2898 |
__ z_bru(exec_mode_initialized); |
|
2899 |
||
2900 |
#ifndef COMPILER1 |
|
2901 |
int reexecute_offset = 1; // odd offset will produce odd pc, which triggers an hardware trap |
|
2902 |
#else |
|
2903 |
// -------------------------------------------------------------------------- |
|
2904 |
// Reexecute entry |
|
2905 |
// - Z_R14 = Deopt Handler in nmethod |
|
2906 |
||
2907 |
int reexecute_offset = __ offset() - start_off; |
|
2908 |
||
2909 |
// No need to update map as each call to save_live_registers will produce identical oopmap |
|
2910 |
(void) RegisterSaver::save_live_registers(masm, RegisterSaver::all_registers); |
|
2911 |
||
2912 |
__ load_const_optimized(exec_mode_reg, Deoptimization::Unpack_reexecute); |
|
2913 |
__ z_bru(exec_mode_initialized); |
|
2914 |
#endif |
|
2915 |
||
2916 |
||
2917 |
// -------------------------------------------------------------------------- |
|
2918 |
// Exception entry. We reached here via a branch. Registers on entry: |
|
2919 |
// - Z_EXC_OOP (Z_ARG1) = exception oop |
|
2920 |
// - Z_EXC_PC (Z_ARG2) = the exception pc. |
|
2921 |
||
2922 |
int exception_offset = __ offset() - start_off; |
|
2923 |
||
2924 |
// all registers are dead at this entry point, except for Z_EXC_OOP, and |
|
2925 |
// Z_EXC_PC which contain the exception oop and exception pc |
|
2926 |
// respectively. Set them in TLS and fall thru to the |
|
2927 |
// unpack_with_exception_in_tls entry point. |
|
2928 |
||
2929 |
// Store exception oop and pc in thread (location known to GC). |
|
2930 |
// Need this since the call to "fetch_unroll_info()" may safepoint. |
|
2931 |
__ z_stg(Z_EXC_OOP, Address(Z_thread, JavaThread::exception_oop_offset())); |
|
2932 |
__ z_stg(Z_EXC_PC, Address(Z_thread, JavaThread::exception_pc_offset())); |
|
2933 |
||
2934 |
// fall through |
|
2935 |
||
2936 |
int exception_in_tls_offset = __ offset() - start_off; |
|
2937 |
||
2938 |
// new implementation because exception oop is now passed in JavaThread |
|
2939 |
||
2940 |
// Prolog for exception case |
|
2941 |
// All registers must be preserved because they might be used by LinearScan |
|
2942 |
// Exceptiop oop and throwing PC are passed in JavaThread |
|
2943 |
||
2944 |
// load throwing pc from JavaThread and us it as the return address of the current frame. |
|
2945 |
__ z_lg(Z_R1_scratch, Address(Z_thread, JavaThread::exception_pc_offset())); |
|
2946 |
||
2947 |
// Save everything in sight. |
|
2948 |
(void) RegisterSaver::save_live_registers(masm, RegisterSaver::all_registers, Z_R1_scratch); |
|
2949 |
||
2950 |
// Now it is safe to overwrite any register |
|
2951 |
||
2952 |
// Clear the exception pc field in JavaThread |
|
2953 |
__ clear_mem(Address(Z_thread, JavaThread::exception_pc_offset()), 8); |
|
2954 |
||
2955 |
// Deopt during an exception. Save exec mode for unpack_frames. |
|
2956 |
__ load_const_optimized(exec_mode_reg, Deoptimization::Unpack_exception); |
|
2957 |
||
2958 |
||
2959 |
#ifdef ASSERT |
|
2960 |
// verify that there is really an exception oop in JavaThread |
|
2961 |
__ z_lg(Z_ARG1, Address(Z_thread, JavaThread::exception_oop_offset())); |
|
2962 |
__ verify_oop(Z_ARG1); |
|
2963 |
||
2964 |
// verify that there is no pending exception |
|
2965 |
__ asm_assert_mem8_is_zero(in_bytes(Thread::pending_exception_offset()), Z_thread, |
|
2966 |
"must not have pending exception here", __LINE__); |
|
2967 |
#endif |
|
2968 |
||
2969 |
// -------------------------------------------------------------------------- |
|
2970 |
// At this point, the live registers are saved and |
|
2971 |
// the exec_mode_reg has been set up correctly. |
|
2972 |
__ bind(exec_mode_initialized); |
|
2973 |
||
2974 |
// stack: ("unpack" frame, deoptee, caller_of_deoptee, ...).
|
|
2975 |
||
2976 |
{
|
|
2977 |
const Register unroll_block_reg = Z_tmp_2; |
|
2978 |
||
2979 |
// we need to set `last_Java_frame' because `fetch_unroll_info' will |
|
2980 |
// call `last_Java_frame()'. however we can't block and no gc will |
|
2981 |
// occur so we don't need an oopmap. the value of the pc in the |
|
2982 |
// frame is not particularly important. it just needs to identify the blob. |
|
2983 |
||
2984 |
// Don't set last_Java_pc anymore here (is implicitly NULL then). |
|
2985 |
// the correct PC is retrieved in pd_last_frame() in that case. |
|
2986 |
__ set_last_Java_frame(/*sp*/Z_SP, noreg); |
|
2987 |
// With EscapeAnalysis turned on, this call may safepoint |
|
2988 |
// despite it's marked as "leaf call"! |
|
2989 |
__ call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::fetch_unroll_info), Z_thread, exec_mode_reg); |
|
2990 |
// Set an oopmap for the call site this describes all our saved volatile registers |
|
2991 |
int offs = __ offset(); |
|
2992 |
oop_maps->add_gc_map(offs, map); |
|
2993 |
||
2994 |
__ reset_last_Java_frame(); |
|
2995 |
// save the return value. |
|
2996 |
__ z_lgr(unroll_block_reg, Z_RET); |
|
2997 |
// restore the return registers that have been saved |
|
2998 |
// (among other registers) by save_live_registers(...). |
|
2999 |
RegisterSaver::restore_result_registers(masm); |
|
3000 |
||
3001 |
// reload the exec mode from the UnrollBlock (it might have changed) |
|
3002 |
__ z_llgf(exec_mode_reg, Address(unroll_block_reg, Deoptimization::UnrollBlock::unpack_kind_offset_in_bytes())); |
|
3003 |
||
3004 |
// In excp_deopt_mode, restore and clear exception oop which we |
|
3005 |
// stored in the thread during exception entry above. The exception |
|
3006 |
// oop will be the return value of this stub. |
|
3007 |
NearLabel skip_restore_excp; |
|
3008 |
__ compare64_and_branch(exec_mode_reg, Deoptimization::Unpack_exception, Assembler::bcondNotEqual, skip_restore_excp); |
|
3009 |
__ z_lg(Z_RET, thread_(exception_oop)); |
|
3010 |
__ clear_mem(thread_(exception_oop), 8); |
|
3011 |
__ bind(skip_restore_excp); |
|
3012 |
||
3013 |
// remove the "unpack" frame |
|
3014 |
__ pop_frame(); |
|
3015 |
||
3016 |
// stack: (deoptee, caller of deoptee, ...). |
|
3017 |
||
3018 |
// pop the deoptee's frame |
|
3019 |
__ pop_frame(); |
|
3020 |
||
3021 |
// stack: (caller_of_deoptee, ...). |
|
3022 |
||
3023 |
// loop through the `UnrollBlock' info and create interpreter frames. |
|
3024 |
push_skeleton_frames(masm, true/*deopt*/, |
|
3025 |
unroll_block_reg, |
|
3026 |
Z_tmp_3, |
|
3027 |
Z_tmp_4, |
|
3028 |
Z_ARG5, |
|
3029 |
Z_ARG4, |
|
3030 |
Z_ARG3); |
|
3031 |
||
3032 |
// stack: (skeletal interpreter frame, ..., optional skeletal |
|
3033 |
// interpreter frame, caller of deoptee, ...). |
|
3034 |
} |
|
3035 |
||
3036 |
// push an "unpack" frame taking care of float / int return values. |
|
3037 |
__ push_frame(RegisterSaver::live_reg_frame_size(RegisterSaver::all_registers)); |
|
3038 |
||
3039 |
// stack: (unpack frame, skeletal interpreter frame, ..., optional |
|
3040 |
// skeletal interpreter frame, caller of deoptee, ...). |
|
3041 |
||
3042 |
// spill live volatile registers since we'll do a call. |
|
3043 |
__ z_stg(Z_RET, offset_of(frame::z_abi_160_spill, spill[0]), Z_SP); |
|
3044 |
__ z_std(Z_FRET, offset_of(frame::z_abi_160_spill, spill[1]), Z_SP); |
|
3045 |
||
3046 |
// let the unpacker layout information in the skeletal frames just allocated. |
|
3047 |
__ get_PC(Z_RET); |
|
3048 |
__ set_last_Java_frame(/*sp*/Z_SP, /*pc*/Z_RET); |
|
3049 |
__ call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::unpack_frames), |
|
3050 |
Z_thread/*thread*/, exec_mode_reg/*exec_mode*/); |
|
3051 |
||
3052 |
__ reset_last_Java_frame(); |
|
3053 |
||
3054 |
// restore the volatiles saved above. |
|
3055 |
__ z_lg(Z_RET, offset_of(frame::z_abi_160_spill, spill[0]), Z_SP); |
|
3056 |
__ z_ld(Z_FRET, offset_of(frame::z_abi_160_spill, spill[1]), Z_SP); |
|
3057 |
||
3058 |
// pop the "unpack" frame. |
|
3059 |
__ pop_frame(); |
|
3060 |
__ restore_return_pc(); |
|
3061 |
||
3062 |
// stack: (top interpreter frame, ..., optional interpreter frame, |
|
3063 |
// caller of deoptee, ...). |
|
3064 |
||
3065 |
__ z_lg(Z_fp, _z_abi(callers_sp), Z_SP); // restore frame pointer |
|
3066 |
__ restore_bcp(); |
|
3067 |
__ restore_locals(); |
|
3068 |
__ restore_esp(); |
|
3069 |
||
3070 |
// return to the interpreter entry point. |
|
3071 |
__ z_br(Z_R14); |
|
3072 |
||
3073 |
// Make sure all code is generated |
|
3074 |
masm->flush(); |
|
3075 |
||
3076 |
_deopt_blob = DeoptimizationBlob::create(&buffer, oop_maps, 0, exception_offset, reexecute_offset, RegisterSaver::live_reg_frame_size(RegisterSaver::all_registers)/wordSize); |
|
3077 |
_deopt_blob->set_unpack_with_exception_in_tls_offset(exception_in_tls_offset); |
|
3078 |
} |
|
3079 |
||
3080 |
||
3081 |
#ifdef COMPILER2 |
|
3082 |
//------------------------------generate_uncommon_trap_blob-------------------- |
|
3083 |
void SharedRuntime::generate_uncommon_trap_blob() {
|
|
3084 |
// Allocate space for the code |
|
3085 |
ResourceMark rm; |
|
3086 |
// Setup code generation tools |
|
3087 |
CodeBuffer buffer("uncommon_trap_blob", 2048, 1024);
|
|
3088 |
InterpreterMacroAssembler* masm = new InterpreterMacroAssembler(&buffer); |
|
3089 |
||
3090 |
Register unroll_block_reg = Z_tmp_1; |
|
3091 |
Register klass_index_reg = Z_ARG2; |
|
3092 |
Register unc_trap_reg = Z_ARG2; |
|
3093 |
||
3094 |
// stack: (deoptee, caller_of_deoptee, ...). |
|
3095 |
||
3096 |
// push a dummy "unpack" frame and call |
|
3097 |
// `Deoptimization::uncommon_trap' to pack the compiled frame into a |
|
3098 |
// vframe array and return the `UnrollBlock' information. |
|
3099 |
||
3100 |
// save R14 to compiled frame. |
|
3101 |
__ save_return_pc(); |
|
3102 |
// push the "unpack_frame". |
|
3103 |
__ push_frame_abi160(0); |
|
3104 |
||
3105 |
// stack: (unpack frame, deoptee, caller_of_deoptee, ...). |
|
3106 |
||
3107 |
// set the "unpack" frame as last_Java_frame. |
|
3108 |
// `Deoptimization::uncommon_trap' expects it and considers its |
|
3109 |
// sender frame as the deoptee frame. |
|
3110 |
__ get_PC(Z_R1_scratch); |
|
3111 |
__ set_last_Java_frame(/*sp*/Z_SP, /*pc*/Z_R1_scratch); |
|
3112 |
||
3113 |
__ z_lgr(klass_index_reg, Z_ARG1); // passed implicitly as ARG2 |
|
3114 |
__ z_lghi(Z_ARG3, Deoptimization::Unpack_uncommon_trap); // passed implicitly as ARG3 |
|
3115 |
BLOCK_COMMENT("call Deoptimization::uncommon_trap()");
|
|
3116 |
__ call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::uncommon_trap), Z_thread); |
|
3117 |
||
3118 |
__ reset_last_Java_frame(); |
|
3119 |
||
3120 |
// pop the "unpack" frame |
|
3121 |
__ pop_frame(); |
|
3122 |
||
3123 |
// stack: (deoptee, caller_of_deoptee, ...). |
|
3124 |
||
3125 |
// save the return value. |
|
3126 |
__ z_lgr(unroll_block_reg, Z_RET); |
|
3127 |
||
3128 |
// pop the deoptee frame. |
|
3129 |
__ pop_frame(); |
|
3130 |
||
3131 |
// stack: (caller_of_deoptee, ...). |
|
3132 |
||
3133 |
#ifdef ASSERT |
|
3134 |
assert(Immediate::is_uimm8(Deoptimization::Unpack_LIMIT), "Code not fit for larger immediates"); |
|
3135 |
assert(Immediate::is_uimm8(Deoptimization::Unpack_uncommon_trap), "Code not fit for larger immediates"); |
|
3136 |
const int unpack_kind_byte_offset = Deoptimization::UnrollBlock::unpack_kind_offset_in_bytes() |
|
3137 |
#ifndef VM_LITTLE_ENDIAN |
|
3138 |
+ 3 |
|
3139 |
#endif |
|
3140 |
; |
|
3141 |
if (Displacement::is_shortDisp(unpack_kind_byte_offset)) {
|
|
3142 |
__ z_cli(unpack_kind_byte_offset, unroll_block_reg, Deoptimization::Unpack_uncommon_trap); |
|
3143 |
} else {
|
|
3144 |
__ z_cliy(unpack_kind_byte_offset, unroll_block_reg, Deoptimization::Unpack_uncommon_trap); |
|
3145 |
} |
|
3146 |
__ asm_assert_eq("SharedRuntime::generate_deopt_blob: expected Unpack_uncommon_trap", 0);
|
|
3147 |
#endif |
|
3148 |
||
3149 |
__ zap_from_to(Z_SP, Z_SP, Z_R0_scratch, Z_R1, 500, -1); |
|
3150 |
||
3151 |
// allocate new interpreter frame(s) and possibly resize the caller's frame |
|
3152 |
// (no more adapters !) |
|
3153 |
push_skeleton_frames(masm, false/*deopt*/, |
|
3154 |
unroll_block_reg, |
|
3155 |
Z_tmp_2, |
|
3156 |
Z_tmp_3, |
|
3157 |
Z_tmp_4, |
|
3158 |
Z_ARG5, |
|
3159 |
Z_ARG4); |
|
3160 |
||
3161 |
// stack: (skeletal interpreter frame, ..., optional skeletal |
|
3162 |
// interpreter frame, (resized) caller of deoptee, ...). |
|
3163 |
||
3164 |
// push a dummy "unpack" frame taking care of float return values. |
|
3165 |
// call `Deoptimization::unpack_frames' to layout information in the |
|
3166 |
// interpreter frames just created |
|
3167 |
||
3168 |
// push the "unpack" frame |
|
3169 |
const unsigned int framesize_in_bytes = __ push_frame_abi160(0); |
|
3170 |
||
3171 |
// stack: (unpack frame, skeletal interpreter frame, ..., optional |
|
3172 |
// skeletal interpreter frame, (resized) caller of deoptee, ...). |
|
3173 |
||
3174 |
// set the "unpack" frame as last_Java_frame |
|
3175 |
__ get_PC(Z_R1_scratch); |
|
3176 |
__ set_last_Java_frame(/*sp*/Z_SP, /*pc*/Z_R1_scratch); |
|
3177 |
||
3178 |
// indicate it is the uncommon trap case |
|
3179 |
BLOCK_COMMENT("call Deoptimization::Unpack_uncommon_trap()");
|
|
3180 |
__ load_const_optimized(unc_trap_reg, Deoptimization::Unpack_uncommon_trap); |
|
3181 |
// let the unpacker layout information in the skeletal frames just allocated. |
|
3182 |
__ call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::unpack_frames), Z_thread); |
|
3183 |
||
3184 |
__ reset_last_Java_frame(); |
|
3185 |
// pop the "unpack" frame |
|
3186 |
__ pop_frame(); |
|
3187 |
// restore LR from top interpreter frame |
|
3188 |
__ restore_return_pc(); |
|
3189 |
||
3190 |
// stack: (top interpreter frame, ..., optional interpreter frame, |
|
3191 |
// (resized) caller of deoptee, ...). |
|
3192 |
||
3193 |
__ z_lg(Z_fp, _z_abi(callers_sp), Z_SP); // restore frame pointer |
|
3194 |
__ restore_bcp(); |
|
3195 |
__ restore_locals(); |
|
3196 |
__ restore_esp(); |
|
3197 |
||
3198 |
// return to the interpreter entry point |
|
3199 |
__ z_br(Z_R14); |
|
3200 |
||
3201 |
masm->flush(); |
|
3202 |
_uncommon_trap_blob = UncommonTrapBlob::create(&buffer, NULL, framesize_in_bytes/wordSize); |
|
3203 |
} |
|
3204 |
#endif // COMPILER2 |
|
3205 |
||
3206 |
||
3207 |
//------------------------------generate_handler_blob------ |
|
3208 |
// |
|
3209 |
// Generate a special Compile2Runtime blob that saves all registers, |
|
3210 |
// and setup oopmap. |
|
3211 |
SafepointBlob* SharedRuntime::generate_handler_blob(address call_ptr, int poll_type) {
|
|
3212 |
assert(StubRoutines::forward_exception_entry() != NULL, |
|
3213 |
"must be generated before"); |
|
3214 |
||
3215 |
ResourceMark rm; |
|
3216 |
OopMapSet *oop_maps = new OopMapSet(); |
|
3217 |
OopMap* map; |
|
3218 |
||
3219 |
// Allocate space for the code. Setup code generation tools. |
|
3220 |
CodeBuffer buffer("handler_blob", 2048, 1024);
|
|
3221 |
MacroAssembler* masm = new MacroAssembler(&buffer); |
|
3222 |
||
3223 |
unsigned int start_off = __ offset(); |
|
3224 |
address call_pc = NULL; |
|
3225 |
int frame_size_in_bytes; |
|
3226 |
||
3227 |
bool cause_return = (poll_type == POLL_AT_RETURN); |
|
3228 |
// Make room for return address (or push it again) |
|
|
48332
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3229 |
if (!cause_return) {
|
| 42065 | 3230 |
__ z_lg(Z_R14, Address(Z_thread, JavaThread::saved_exception_pc_offset())); |
|
48332
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3231 |
} |
| 42065 | 3232 |
|
3233 |
// Save registers, fpu state, and flags |
|
3234 |
map = RegisterSaver::save_live_registers(masm, RegisterSaver::all_registers); |
|
3235 |
||
|
48332
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3236 |
if (SafepointMechanism::uses_thread_local_poll() && !cause_return) {
|
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3237 |
// Keep a copy of the return pc to detect if it gets modified. |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3238 |
__ z_lgr(Z_R6, Z_R14); |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3239 |
} |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3240 |
|
| 42065 | 3241 |
// The following is basically a call_VM. However, we need the precise |
3242 |
// address of the call in order to generate an oopmap. Hence, we do all the |
|
3243 |
// work outselves. |
|
3244 |
__ set_last_Java_frame(Z_SP, noreg); |
|
3245 |
||
3246 |
// call into the runtime to handle the safepoint poll |
|
3247 |
__ call_VM_leaf(call_ptr, Z_thread); |
|
3248 |
||
3249 |
||
3250 |
// Set an oopmap for the call site. This oopmap will map all |
|
3251 |
// oop-registers and debug-info registers as callee-saved. This |
|
3252 |
// will allow deoptimization at this safepoint to find all possible |
|
3253 |
// debug-info recordings, as well as let GC find all oops. |
|
3254 |
||
3255 |
oop_maps->add_gc_map((int)(__ offset()-start_off), map); |
|
3256 |
||
3257 |
Label noException; |
|
3258 |
||
3259 |
__ reset_last_Java_frame(); |
|
3260 |
||
3261 |
__ load_and_test_long(Z_R1, thread_(pending_exception)); |
|
3262 |
__ z_bre(noException); |
|
3263 |
||
3264 |
// Pending exception case, used (sporadically) by |
|
3265 |
// api/java_lang/Thread.State/index#ThreadState et al. |
|
3266 |
RegisterSaver::restore_live_registers(masm, RegisterSaver::all_registers); |
|
3267 |
||
3268 |
// Jump to forward_exception_entry, with the issuing PC in Z_R14 |
|
3269 |
// so it looks like the original nmethod called forward_exception_entry. |
|
3270 |
__ load_const_optimized(Z_R1_scratch, StubRoutines::forward_exception_entry()); |
|
3271 |
__ z_br(Z_R1_scratch); |
|
3272 |
||
3273 |
// No exception case |
|
3274 |
__ bind(noException); |
|
3275 |
||
|
48332
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3276 |
if (SafepointMechanism::uses_thread_local_poll() && !cause_return) {
|
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3277 |
Label no_adjust; |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3278 |
// If our stashed return pc was modified by the runtime we avoid touching it |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3279 |
const int offset_of_return_pc = _z_abi16(return_pc) + RegisterSaver::live_reg_frame_size(RegisterSaver::all_registers); |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3280 |
__ z_cg(Z_R6, offset_of_return_pc, Z_SP); |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3281 |
__ z_brne(no_adjust); |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3282 |
|
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3283 |
// Adjust return pc forward to step over the safepoint poll instruction |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3284 |
__ instr_size(Z_R1_scratch, Z_R6); |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3285 |
__ z_agr(Z_R6, Z_R1_scratch); |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3286 |
__ z_stg(Z_R6, offset_of_return_pc, Z_SP); |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3287 |
|
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3288 |
__ bind(no_adjust); |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3289 |
} |
|
651a95f30dfb
8193257: PPC64, s390 implementation for Thread-local handshakes
mdoerr
parents:
47795
diff
changeset
|
3290 |
|
| 42065 | 3291 |
// Normal exit, restore registers and exit. |
3292 |
RegisterSaver::restore_live_registers(masm, RegisterSaver::all_registers); |
|
3293 |
||
3294 |
__ z_br(Z_R14); |
|
3295 |
||
3296 |
// Make sure all code is generated |
|
3297 |
masm->flush(); |
|
3298 |
||
3299 |
// Fill-out other meta info |
|
3300 |
return SafepointBlob::create(&buffer, oop_maps, RegisterSaver::live_reg_frame_size(RegisterSaver::all_registers)/wordSize); |
|
3301 |
} |
|
3302 |
||
3303 |
||
3304 |
// |
|
3305 |
// generate_resolve_blob - call resolution (static/virtual/opt-virtual/ic-miss |
|
3306 |
// |
|
3307 |
// Generate a stub that calls into vm to find out the proper destination |
|
3308 |
// of a Java call. All the argument registers are live at this point |
|
3309 |
// but since this is generic code we don't know what they are and the caller |
|
3310 |
// must do any gc of the args. |
|
3311 |
// |
|
3312 |
RuntimeStub* SharedRuntime::generate_resolve_blob(address destination, const char* name) {
|
|
3313 |
assert (StubRoutines::forward_exception_entry() != NULL, "must be generated before"); |
|
3314 |
||
3315 |
// allocate space for the code |
|
3316 |
ResourceMark rm; |
|
3317 |
||
3318 |
CodeBuffer buffer(name, 1000, 512); |
|
3319 |
MacroAssembler* masm = new MacroAssembler(&buffer); |
|
3320 |
||
3321 |
OopMapSet *oop_maps = new OopMapSet(); |
|
3322 |
OopMap* map = NULL; |
|
3323 |
||
3324 |
unsigned int start_off = __ offset(); |
|
3325 |
||
3326 |
map = RegisterSaver::save_live_registers(masm, RegisterSaver::all_registers); |
|
3327 |
||
3328 |
// We must save a PC from within the stub as return PC |
|
3329 |
// C code doesn't store the LR where we expect the PC, |
|
3330 |
// so we would run into trouble upon stack walking. |
|
3331 |
__ get_PC(Z_R1_scratch); |
|
3332 |
||
3333 |
unsigned int frame_complete = __ offset(); |
|
3334 |
||
3335 |
__ set_last_Java_frame(/*sp*/Z_SP, Z_R1_scratch); |
|
3336 |
||
3337 |
__ call_VM_leaf(destination, Z_thread, Z_method); |
|
3338 |
||
3339 |
||
3340 |
// Set an oopmap for the call site. |
|
3341 |
// We need this not only for callee-saved registers, but also for volatile |
|
3342 |
// registers that the compiler might be keeping live across a safepoint. |
|
3343 |
||
3344 |
oop_maps->add_gc_map((int)(frame_complete-start_off), map); |
|
3345 |
||
3346 |
// clear last_Java_sp |
|
3347 |
__ reset_last_Java_frame(); |
|
3348 |
||
3349 |
// check for pending exceptions |
|
3350 |
Label pending; |
|
3351 |
__ load_and_test_long(Z_R0, Address(Z_thread, Thread::pending_exception_offset())); |
|
3352 |
__ z_brne(pending); |
|
3353 |
||
3354 |
__ z_lgr(Z_R1_scratch, Z_R2); // r1 is neither saved nor restored, r2 contains the continuation. |
|
3355 |
RegisterSaver::restore_live_registers(masm, RegisterSaver::all_registers); |
|
3356 |
||
3357 |
// get the returned method |
|
3358 |
__ get_vm_result_2(Z_method); |
|
3359 |
||
3360 |
// We are back the the original state on entry and ready to go. |
|
3361 |
__ z_br(Z_R1_scratch); |
|
3362 |
||
3363 |
// Pending exception after the safepoint |
|
3364 |
||
3365 |
__ bind(pending); |
|
3366 |
||
3367 |
RegisterSaver::restore_live_registers(masm, RegisterSaver::all_registers); |
|
3368 |
||
3369 |
// exception pending => remove activation and forward to exception handler |
|
3370 |
||
3371 |
__ z_lgr(Z_R2, Z_R0); // pending_exception |
|
3372 |
__ clear_mem(Address(Z_thread, JavaThread::vm_result_offset()), sizeof(jlong)); |
|
3373 |
__ load_const_optimized(Z_R1_scratch, StubRoutines::forward_exception_entry()); |
|
3374 |
__ z_br(Z_R1_scratch); |
|
3375 |
||
3376 |
// ------------- |
|
3377 |
// make sure all code is generated |
|
3378 |
masm->flush(); |
|
3379 |
||
3380 |
// return the blob |
|
3381 |
// frame_size_words or bytes?? |
|
3382 |
return RuntimeStub::new_runtime_stub(name, &buffer, frame_complete, RegisterSaver::live_reg_frame_size(RegisterSaver::all_registers)/wordSize, |
|
3383 |
oop_maps, true); |
|
3384 |
||
3385 |
} |
|
3386 |
||
3387 |
//------------------------------Montgomery multiplication------------------------ |
|
3388 |
// |
|
3389 |
||
3390 |
// Subtract 0:b from carry:a. Return carry. |
|
3391 |
static unsigned long |
|
3392 |
sub(unsigned long a[], unsigned long b[], unsigned long carry, long len) {
|
|
3393 |
unsigned long i, c = 8 * (unsigned long)(len - 1); |
|
3394 |
__asm__ __volatile__ ( |
|
3395 |
"SLGR %[i], %[i] \n" // initialize to 0 and pre-set carry |
|
3396 |
"LGHI 0, 8 \n" // index increment (for BRXLG) |
|
3397 |
"LGR 1, %[c] \n" // index limit (for BRXLG) |
|
3398 |
"0: \n" |
|
3399 |
"LG %[c], 0(%[i],%[a]) \n" |
|
3400 |
"SLBG %[c], 0(%[i],%[b]) \n" // subtract with borrow |
|
3401 |
"STG %[c], 0(%[i],%[a]) \n" |
|
3402 |
"BRXLG %[i], 0, 0b \n" // while ((i+=8)<limit); |
|
3403 |
"SLBGR %[c], %[c] \n" // save carry - 1 |
|
3404 |
: [i]"=&a"(i), [c]"+r"(c) |
|
3405 |
: [a]"a"(a), [b]"a"(b) |
|
3406 |
: "cc", "memory", "r0", "r1" |
|
3407 |
); |
|
3408 |
return carry + c; |
|
3409 |
} |
|
3410 |
||
3411 |
// Multiply (unsigned) Long A by Long B, accumulating the double- |
|
3412 |
// length result into the accumulator formed of T0, T1, and T2. |
|
3413 |
inline void MACC(unsigned long A[], long A_ind, |
|
3414 |
unsigned long B[], long B_ind, |
|
3415 |
unsigned long &T0, unsigned long &T1, unsigned long &T2) {
|
|
3416 |
long A_si = 8 * A_ind, |
|
3417 |
B_si = 8 * B_ind; |
|
3418 |
__asm__ __volatile__ ( |
|
3419 |
"LG 1, 0(%[A_si],%[A]) \n" |
|
3420 |
"MLG 0, 0(%[B_si],%[B]) \n" // r0r1 = A * B |
|
3421 |
"ALGR %[T0], 1 \n" |
|
3422 |
"LGHI 1, 0 \n" // r1 = 0 |
|
3423 |
"ALCGR %[T1], 0 \n" |
|
3424 |
"ALCGR %[T2], 1 \n" |
|
3425 |
: [T0]"+r"(T0), [T1]"+r"(T1), [T2]"+r"(T2) |
|
3426 |
: [A]"r"(A), [A_si]"r"(A_si), [B]"r"(B), [B_si]"r"(B_si) |
|
3427 |
: "cc", "r0", "r1" |
|
3428 |
); |
|
3429 |
} |
|
3430 |
||
3431 |
// As above, but add twice the double-length result into the |
|
3432 |
// accumulator. |
|
3433 |
inline void MACC2(unsigned long A[], long A_ind, |
|
3434 |
unsigned long B[], long B_ind, |
|
3435 |
unsigned long &T0, unsigned long &T1, unsigned long &T2) {
|
|
3436 |
const unsigned long zero = 0; |
|
3437 |
long A_si = 8 * A_ind, |
|
3438 |
B_si = 8 * B_ind; |
|
3439 |
__asm__ __volatile__ ( |
|
3440 |
"LG 1, 0(%[A_si],%[A]) \n" |
|
3441 |
"MLG 0, 0(%[B_si],%[B]) \n" // r0r1 = A * B |
|
3442 |
"ALGR %[T0], 1 \n" |
|
3443 |
"ALCGR %[T1], 0 \n" |
|
3444 |
"ALCGR %[T2], %[zero] \n" |
|
3445 |
"ALGR %[T0], 1 \n" |
|
3446 |
"ALCGR %[T1], 0 \n" |
|
3447 |
"ALCGR %[T2], %[zero] \n" |
|
3448 |
: [T0]"+r"(T0), [T1]"+r"(T1), [T2]"+r"(T2) |
|
3449 |
: [A]"r"(A), [A_si]"r"(A_si), [B]"r"(B), [B_si]"r"(B_si), [zero]"r"(zero) |
|
3450 |
: "cc", "r0", "r1" |
|
3451 |
); |
|
3452 |
} |
|
3453 |
||
3454 |
// Fast Montgomery multiplication. The derivation of the algorithm is |
|
3455 |
// in "A Cryptographic Library for the Motorola DSP56000, |
|
3456 |
// Dusse and Kaliski, Proc. EUROCRYPT 90, pp. 230-237". |
|
3457 |
static void |
|
3458 |
montgomery_multiply(unsigned long a[], unsigned long b[], unsigned long n[], |
|
3459 |
unsigned long m[], unsigned long inv, int len) {
|
|
3460 |
unsigned long t0 = 0, t1 = 0, t2 = 0; // Triple-precision accumulator |
|
3461 |
int i; |
|
3462 |
||
3463 |
assert(inv * n[0] == -1UL, "broken inverse in Montgomery multiply"); |
|
3464 |
||
3465 |
for (i = 0; i < len; i++) {
|
|
3466 |
int j; |
|
3467 |
for (j = 0; j < i; j++) {
|
|
3468 |
MACC(a, j, b, i-j, t0, t1, t2); |
|
3469 |
MACC(m, j, n, i-j, t0, t1, t2); |
|
3470 |
} |
|
3471 |
MACC(a, i, b, 0, t0, t1, t2); |
|
3472 |
m[i] = t0 * inv; |
|
3473 |
MACC(m, i, n, 0, t0, t1, t2); |
|
3474 |
||
3475 |
assert(t0 == 0, "broken Montgomery multiply"); |
|
3476 |
||
3477 |
t0 = t1; t1 = t2; t2 = 0; |
|
3478 |
} |
|
3479 |
||
3480 |
for (i = len; i < 2 * len; i++) {
|
|
3481 |
int j; |
|
3482 |
for (j = i - len + 1; j < len; j++) {
|
|
3483 |
MACC(a, j, b, i-j, t0, t1, t2); |
|
3484 |
MACC(m, j, n, i-j, t0, t1, t2); |
|
3485 |
} |
|
3486 |
m[i-len] = t0; |
|
3487 |
t0 = t1; t1 = t2; t2 = 0; |
|
3488 |
} |
|
3489 |
||
3490 |
while (t0) {
|
|
3491 |
t0 = sub(m, n, t0, len); |
|
3492 |
} |
|
3493 |
} |
|
3494 |
||
3495 |
// Fast Montgomery squaring. This uses asymptotically 25% fewer |
|
3496 |
// multiplies so it should be up to 25% faster than Montgomery |
|
3497 |
// multiplication. However, its loop control is more complex and it |
|
3498 |
// may actually run slower on some machines. |
|
3499 |
static void |
|
3500 |
montgomery_square(unsigned long a[], unsigned long n[], |
|
3501 |
unsigned long m[], unsigned long inv, int len) {
|
|
3502 |
unsigned long t0 = 0, t1 = 0, t2 = 0; // Triple-precision accumulator |
|
3503 |
int i; |
|
3504 |
||
3505 |
assert(inv * n[0] == -1UL, "broken inverse in Montgomery multiply"); |
|
3506 |
||
3507 |
for (i = 0; i < len; i++) {
|
|
3508 |
int j; |
|
3509 |
int end = (i+1)/2; |
|
3510 |
for (j = 0; j < end; j++) {
|
|
3511 |
MACC2(a, j, a, i-j, t0, t1, t2); |
|
3512 |
MACC(m, j, n, i-j, t0, t1, t2); |
|
3513 |
} |
|
3514 |
if ((i & 1) == 0) {
|
|
3515 |
MACC(a, j, a, j, t0, t1, t2); |
|
3516 |
} |
|
3517 |
for (; j < i; j++) {
|
|
3518 |
MACC(m, j, n, i-j, t0, t1, t2); |
|
3519 |
} |
|
3520 |
m[i] = t0 * inv; |
|
3521 |
MACC(m, i, n, 0, t0, t1, t2); |
|
3522 |
||
3523 |
assert(t0 == 0, "broken Montgomery square"); |
|
3524 |
||
3525 |
t0 = t1; t1 = t2; t2 = 0; |
|
3526 |
} |
|
3527 |
||
3528 |
for (i = len; i < 2*len; i++) {
|
|
3529 |
int start = i-len+1; |
|
3530 |
int end = start + (len - start)/2; |
|
3531 |
int j; |
|
3532 |
for (j = start; j < end; j++) {
|
|
3533 |
MACC2(a, j, a, i-j, t0, t1, t2); |
|
3534 |
MACC(m, j, n, i-j, t0, t1, t2); |
|
3535 |
} |
|
3536 |
if ((i & 1) == 0) {
|
|
3537 |
MACC(a, j, a, j, t0, t1, t2); |
|
3538 |
} |
|
3539 |
for (; j < len; j++) {
|
|
3540 |
MACC(m, j, n, i-j, t0, t1, t2); |
|
3541 |
} |
|
3542 |
m[i-len] = t0; |
|
3543 |
t0 = t1; t1 = t2; t2 = 0; |
|
3544 |
} |
|
3545 |
||
3546 |
while (t0) {
|
|
3547 |
t0 = sub(m, n, t0, len); |
|
3548 |
} |
|
3549 |
} |
|
3550 |
||
3551 |
// The threshold at which squaring is advantageous was determined |
|
3552 |
// experimentally on an i7-3930K (Ivy Bridge) CPU @ 3.5GHz. |
|
3553 |
// Value seems to be ok for other platforms, too. |
|
3554 |
#define MONTGOMERY_SQUARING_THRESHOLD 64 |
|
3555 |
||
3556 |
// Copy len longwords from s to d, word-swapping as we go. The |
|
3557 |
// destination array is reversed. |
|
3558 |
static void reverse_words(unsigned long *s, unsigned long *d, int len) {
|
|
3559 |
d += len; |
|
3560 |
while(len-- > 0) {
|
|
3561 |
d--; |
|
3562 |
unsigned long s_val = *s; |
|
3563 |
// Swap words in a longword on little endian machines. |
|
3564 |
#ifdef VM_LITTLE_ENDIAN |
|
3565 |
Unimplemented(); |
|
3566 |
#endif |
|
3567 |
*d = s_val; |
|
3568 |
s++; |
|
3569 |
} |
|
3570 |
} |
|
3571 |
||
3572 |
void SharedRuntime::montgomery_multiply(jint *a_ints, jint *b_ints, jint *n_ints, |
|
3573 |
jint len, jlong inv, |
|
3574 |
jint *m_ints) {
|
|
3575 |
len = len & 0x7fffFFFF; // C2 does not respect int to long conversion for stub calls. |
|
3576 |
assert(len % 2 == 0, "array length in montgomery_multiply must be even"); |
|
3577 |
int longwords = len/2; |
|
3578 |
||
3579 |
// Make very sure we don't use so much space that the stack might |
|
3580 |
// overflow. 512 jints corresponds to an 16384-bit integer and |
|
3581 |
// will use here a total of 8k bytes of stack space. |
|
3582 |
int total_allocation = longwords * sizeof (unsigned long) * 4; |
|
3583 |
guarantee(total_allocation <= 8192, "must be"); |
|
3584 |
unsigned long *scratch = (unsigned long *)alloca(total_allocation); |
|
3585 |
||
3586 |
// Local scratch arrays |
|
3587 |
unsigned long |
|
3588 |
*a = scratch + 0 * longwords, |
|
3589 |
*b = scratch + 1 * longwords, |
|
3590 |
*n = scratch + 2 * longwords, |
|
3591 |
*m = scratch + 3 * longwords; |
|
3592 |
||
3593 |
reverse_words((unsigned long *)a_ints, a, longwords); |
|
3594 |
reverse_words((unsigned long *)b_ints, b, longwords); |
|
3595 |
reverse_words((unsigned long *)n_ints, n, longwords); |
|
3596 |
||
3597 |
::montgomery_multiply(a, b, n, m, (unsigned long)inv, longwords); |
|
3598 |
||
3599 |
reverse_words(m, (unsigned long *)m_ints, longwords); |
|
3600 |
} |
|
3601 |
||
3602 |
void SharedRuntime::montgomery_square(jint *a_ints, jint *n_ints, |
|
3603 |
jint len, jlong inv, |
|
3604 |
jint *m_ints) {
|
|
3605 |
len = len & 0x7fffFFFF; // C2 does not respect int to long conversion for stub calls. |
|
3606 |
assert(len % 2 == 0, "array length in montgomery_square must be even"); |
|
3607 |
int longwords = len/2; |
|
3608 |
||
3609 |
// Make very sure we don't use so much space that the stack might |
|
3610 |
// overflow. 512 jints corresponds to an 16384-bit integer and |
|
3611 |
// will use here a total of 6k bytes of stack space. |
|
3612 |
int total_allocation = longwords * sizeof (unsigned long) * 3; |
|
3613 |
guarantee(total_allocation <= 8192, "must be"); |
|
3614 |
unsigned long *scratch = (unsigned long *)alloca(total_allocation); |
|
3615 |
||
3616 |
// Local scratch arrays |
|
3617 |
unsigned long |
|
3618 |
*a = scratch + 0 * longwords, |
|
3619 |
*n = scratch + 1 * longwords, |
|
3620 |
*m = scratch + 2 * longwords; |
|
3621 |
||
3622 |
reverse_words((unsigned long *)a_ints, a, longwords); |
|
3623 |
reverse_words((unsigned long *)n_ints, n, longwords); |
|
3624 |
||
3625 |
if (len >= MONTGOMERY_SQUARING_THRESHOLD) {
|
|
3626 |
::montgomery_square(a, n, m, (unsigned long)inv, longwords); |
|
3627 |
} else {
|
|
3628 |
::montgomery_multiply(a, a, n, m, (unsigned long)inv, longwords); |
|
3629 |
} |
|
3630 |
||
3631 |
reverse_words(m, (unsigned long *)m_ints, longwords); |
|
3632 |
} |
|
3633 |
||
3634 |
extern "C" |
|
3635 |
int SpinPause() {
|
|
3636 |
return 0; |
|
3637 |
} |