Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/runtime_x86_32.cpp @ 2007:5ddfcf4b079e
7003554: (tiered) assert(is_null_object() || handle() != NULL) failed: cannot embed null pointer
Summary: C1 with profiling doesn't check whether the MDO has been really allocated, which can silently fail if the perm gen is full. The solution is to check if the allocation failed and bailout out of inlining or compilation.
Reviewed-by: kvn, never
| author | iveresov |
|---|---|
| date | Thu, 02 Dec 2010 17:21:12 -0800 |
| parents | f95d63e2154a |
| children | f7d55ea6ee56 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1579 | 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 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #ifdef COMPILER2 | |
| 27 #include "asm/assembler.hpp" | |
| 28 #include "assembler_x86.inline.hpp" | |
| 29 #include "classfile/systemDictionary.hpp" | |
| 30 #include "code/vmreg.hpp" | |
| 31 #include "interpreter/interpreter.hpp" | |
| 32 #include "nativeInst_x86.hpp" | |
| 33 #include "opto/runtime.hpp" | |
| 34 #include "runtime/interfaceSupport.hpp" | |
| 35 #include "runtime/sharedRuntime.hpp" | |
| 36 #include "runtime/stubRoutines.hpp" | |
| 37 #include "runtime/vframeArray.hpp" | |
| 38 #include "utilities/globalDefinitions.hpp" | |
| 39 #include "vmreg_x86.inline.hpp" | |
| 40 #endif | |
| 0 | 41 |
| 42 | |
| 43 #define __ masm-> | |
| 44 | |
| 45 ExceptionBlob* OptoRuntime::_exception_blob; | |
| 46 | |
| 47 //------------------------------generate_exception_blob--------------------------- | |
| 48 // creates exception blob at the end | |
| 49 // Using exception blob, this code is jumped from a compiled method. | |
| 50 // | |
| 51 // Given an exception pc at a call we call into the runtime for the | |
| 52 // handler in this method. This handler might merely restore state | |
| 53 // (i.e. callee save registers) unwind the frame and jump to the | |
| 54 // exception handler for the nmethod if there is no Java level handler | |
| 55 // for the nmethod. | |
| 56 // | |
| 57 // This code is entered with a jmp. | |
| 58 // | |
| 59 // Arguments: | |
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60 // rax: exception oop |
| 0 | 61 // rdx: exception pc |
| 62 // | |
| 63 // Results: | |
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64 // rax: exception oop |
| 0 | 65 // rdx: exception pc in caller or ??? |
| 66 // destination: exception handler of caller | |
| 67 // | |
| 68 // Note: the exception pc MUST be at a call (precise debug information) | |
| 69 // Only register rax, rdx, rcx are not callee saved. | |
| 70 // | |
| 71 | |
| 72 void OptoRuntime::generate_exception_blob() { | |
| 73 | |
| 74 // Capture info about frame layout | |
| 75 enum layout { | |
| 76 thread_off, // last_java_sp | |
| 77 // The frame sender code expects that rbp will be in the "natural" place and | |
| 78 // will override any oopMap setting for it. We must therefore force the layout | |
| 79 // so that it agrees with the frame sender code. | |
| 80 rbp_off, | |
| 81 return_off, // slot for return address | |
| 82 framesize | |
| 83 }; | |
| 84 | |
| 85 // allocate space for the code | |
| 86 ResourceMark rm; | |
| 87 // setup code generation tools | |
| 88 CodeBuffer buffer("exception_blob", 512, 512); | |
| 89 MacroAssembler* masm = new MacroAssembler(&buffer); | |
| 90 | |
| 91 OopMapSet *oop_maps = new OopMapSet(); | |
| 92 | |
| 93 address start = __ pc(); | |
| 94 | |
| 304 | 95 __ push(rdx); |
| 96 __ subptr(rsp, return_off * wordSize); // Prolog! | |
| 0 | 97 |
| 98 // rbp, location is implicitly known | |
| 304 | 99 __ movptr(Address(rsp,rbp_off *wordSize), rbp); |
| 0 | 100 |
| 101 // Store exception in Thread object. We cannot pass any arguments to the | |
| 102 // handle_exception call, since we do not want to make any assumption | |
| 103 // about the size of the frame where the exception happened in. | |
| 104 __ get_thread(rcx); | |
| 304 | 105 __ movptr(Address(rcx, JavaThread::exception_oop_offset()), rax); |
| 106 __ movptr(Address(rcx, JavaThread::exception_pc_offset()), rdx); | |
| 0 | 107 |
| 108 // This call does all the hard work. It checks if an exception handler | |
| 109 // exists in the method. | |
| 110 // If so, it returns the handler address. | |
| 111 // If not, it prepares for stack-unwinding, restoring the callee-save | |
| 112 // registers of the frame being removed. | |
| 113 // | |
| 304 | 114 __ movptr(Address(rsp, thread_off * wordSize), rcx); // Thread is first argument |
| 0 | 115 __ set_last_Java_frame(rcx, noreg, noreg, NULL); |
| 116 | |
| 117 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, OptoRuntime::handle_exception_C))); | |
| 118 | |
| 119 // No registers to map, rbp is known implicitly | |
| 120 oop_maps->add_gc_map( __ pc() - start, new OopMap( framesize, 0 )); | |
| 121 __ get_thread(rcx); | |
| 122 __ reset_last_Java_frame(rcx, false, false); | |
| 123 | |
| 124 // Restore callee-saved registers | |
| 304 | 125 __ movptr(rbp, Address(rsp, rbp_off * wordSize)); |
| 0 | 126 |
| 304 | 127 __ addptr(rsp, return_off * wordSize); // Epilog! |
| 128 __ pop(rdx); // Exception pc | |
| 0 | 129 |
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130 // rax: exception handler for given <exception oop/exception pc> |
| 0 | 131 |
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132 // Restore SP from BP if the exception PC is a MethodHandle call site. |
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133 __ cmpl(Address(rcx, JavaThread::is_method_handle_return_offset()), 0); |
| 1567 | 134 __ cmovptr(Assembler::notEqual, rsp, rbp_mh_SP_save); |
| 0 | 135 |
| 136 // We have a handler in rax, (could be deopt blob) | |
| 137 // rdx - throwing pc, deopt blob will need it. | |
| 138 | |
| 304 | 139 __ push(rax); |
| 0 | 140 |
| 141 // Get the exception | |
| 304 | 142 __ movptr(rax, Address(rcx, JavaThread::exception_oop_offset())); |
| 0 | 143 // Get the exception pc in case we are deoptimized |
| 304 | 144 __ movptr(rdx, Address(rcx, JavaThread::exception_pc_offset())); |
| 0 | 145 #ifdef ASSERT |
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146 __ movptr(Address(rcx, JavaThread::exception_handler_pc_offset()), NULL_WORD); |
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147 __ movptr(Address(rcx, JavaThread::exception_pc_offset()), NULL_WORD); |
| 0 | 148 #endif |
| 149 // Clear the exception oop so GC no longer processes it as a root. | |
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150 __ movptr(Address(rcx, JavaThread::exception_oop_offset()), NULL_WORD); |
| 0 | 151 |
| 304 | 152 __ pop(rcx); |
| 0 | 153 |
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154 // rax: exception oop |
| 0 | 155 // rcx: exception handler |
| 156 // rdx: exception pc | |
| 157 __ jmp (rcx); | |
| 158 | |
| 159 // ------------- | |
| 160 // make sure all code is generated | |
| 161 masm->flush(); | |
| 162 | |
| 163 _exception_blob = ExceptionBlob::create(&buffer, oop_maps, framesize); | |
| 164 } |