Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/interpreterRT_x86_32.cpp @ 1827:52e82a6bedaf
6968348: Byteswapped memory access can point to wrong location after JIT
Reviewed-by: twisti, kvn, iveresov
| author | never |
|---|---|
| date | Mon, 04 Oct 2010 17:09:18 -0700 |
| parents | 126ea7725993 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_interpreterRT_x86_32.cpp.incl" | |
| 27 | |
| 28 | |
| 29 #define __ _masm-> | |
| 30 | |
| 31 | |
| 32 // Implementation of SignatureHandlerGenerator | |
| 33 void InterpreterRuntime::SignatureHandlerGenerator::pass_int() { | |
| 34 move(offset(), jni_offset() + 1); | |
| 35 } | |
| 36 | |
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37 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { |
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38 move(offset(), jni_offset() + 1); |
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39 } |
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40 |
| 0 | 41 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { |
| 42 move(offset(), jni_offset() + 2); | |
| 43 move(offset() + 1, jni_offset() + 1); | |
| 44 } | |
| 45 | |
| 46 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { | |
| 47 box (offset(), jni_offset() + 1); | |
| 48 } | |
| 49 | |
| 50 void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) { | |
| 51 __ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset))); | |
| 52 __ movl(Address(to(), to_offset * wordSize), temp()); | |
| 53 } | |
| 54 | |
| 55 | |
| 56 void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) { | |
| 304 | 57 __ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset))); |
| 58 __ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI | |
| 0 | 59 Label L; |
| 60 __ jcc(Assembler::notZero, L); | |
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61 __ movptr(temp(), NULL_WORD); |
| 0 | 62 __ bind(L); |
| 304 | 63 __ movptr(Address(to(), to_offset * wordSize), temp()); |
| 0 | 64 } |
| 65 | |
| 66 | |
| 67 void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) { | |
| 68 // generate code to handle arguments | |
| 69 iterate(fingerprint); | |
| 70 // return result handler | |
| 71 __ lea(rax, | |
| 72 ExternalAddress((address)Interpreter::result_handler(method()->result_type()))); | |
| 73 // return | |
| 74 __ ret(0); | |
| 75 __ flush(); | |
| 76 } | |
| 77 | |
| 78 | |
| 79 Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rdi; } | |
| 80 Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; } | |
| 81 Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rcx; } | |
| 82 | |
| 83 | |
| 84 // Implementation of SignatureHandlerLibrary | |
| 85 | |
| 86 void SignatureHandlerLibrary::pd_set_handler(address handler) {} | |
| 87 | |
| 88 class SlowSignatureHandler: public NativeSignatureIterator { | |
| 89 private: | |
| 90 address _from; | |
| 91 intptr_t* _to; | |
| 92 | |
| 93 virtual void pass_int() { | |
| 94 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); | |
| 1506 | 95 _from -= Interpreter::stackElementSize; |
| 0 | 96 } |
| 97 | |
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98 virtual void pass_float() { |
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99 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); |
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100 _from -= Interpreter::stackElementSize; |
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101 } |
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102 |
| 0 | 103 virtual void pass_long() { |
| 104 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); | |
| 105 _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0)); | |
| 106 _to += 2; | |
| 1506 | 107 _from -= 2*Interpreter::stackElementSize; |
| 0 | 108 } |
| 109 | |
| 110 virtual void pass_object() { | |
| 111 // pass address of from | |
| 112 intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0)); | |
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113 *_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr; |
| 1506 | 114 _from -= Interpreter::stackElementSize; |
| 0 | 115 } |
| 116 | |
| 117 public: | |
| 118 SlowSignatureHandler(methodHandle method, address from, intptr_t* to) : | |
| 119 NativeSignatureIterator(method) { | |
| 120 _from = from; | |
| 121 _to = to + (is_static() ? 2 : 1); | |
| 122 } | |
| 123 }; | |
| 124 | |
| 125 IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* thread, methodOopDesc* method, intptr_t* from, intptr_t* to)) | |
| 126 methodHandle m(thread, (methodOop)method); | |
| 127 assert(m->is_native(), "sanity check"); | |
| 128 // handle arguments | |
| 129 SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1)); | |
| 130 // return result handler | |
| 131 return Interpreter::result_handler(m->result_type()); | |
| 132 IRT_END |