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src/cpu/sparc/vm/bytecodeInterpreter_sparc.hpp@e1162778c1c8 (annotated)
src/cpu/sparc/vm/bytecodeInterpreter_sparc.hpp
Thu, 07 Apr 2011 09:53:20 -0700
- author
- johnc
- date
- Thu, 07 Apr 2011 09:53:20 -0700
- changeset 2781
- e1162778c1c8
- parent 2314
- f95d63e2154a
- child 6483
- 018b357638aa
- permissions
- -rw-r--r--
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
Summary: A referent object that is only weakly reachable at the start of concurrent marking but is re-attached to the strongly reachable object graph during marking may not be marked as live. This can cause the reference object to be processed prematurely and leave dangling pointers to the referent object. Implement a read barrier for the java.lang.ref.Reference::referent field by intrinsifying the Reference.get() method, and intercepting accesses though JNI, reflection, and Unsafe, so that when a non-null referent object is read it is also logged in an SATB buffer.
Reviewed-by: kvn, iveresov, never, tonyp, dholmes
| duke@435 | 1 | /* |
| stefank@2314 | 2 | * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #ifndef CPU_SPARC_VM_BYTECODEINTERPRETER_SPARC_HPP |
| stefank@2314 | 26 | #define CPU_SPARC_VM_BYTECODEINTERPRETER_SPARC_HPP |
| stefank@2314 | 27 | |
| duke@435 | 28 | // Platform specific for C++ based Interpreter |
| duke@435 | 29 | #define LOTS_OF_REGS /* Lets interpreter use plenty of registers */ |
| duke@435 | 30 | |
| duke@435 | 31 | private: |
| duke@435 | 32 | |
| duke@435 | 33 | // save the bottom of the stack after frame manager setup. For ease of restoration after return |
| duke@435 | 34 | // from recursive interpreter call |
| duke@435 | 35 | intptr_t* _frame_bottom; /* saved bottom of frame manager frame */ |
| duke@435 | 36 | intptr_t* _last_Java_pc; /* pc to return to in frame manager */ |
| duke@435 | 37 | interpreterState _self_link; /* Previous interpreter state */ /* sometimes points to self??? */ |
| duke@435 | 38 | double _native_fresult; /* save result of native calls that might return floats */ |
| duke@435 | 39 | intptr_t _native_lresult; /* save result of native calls that might return handle/longs */ |
| duke@435 | 40 | public: |
| duke@435 | 41 | |
| duke@435 | 42 | static void pd_layout_interpreterState(interpreterState istate, address last_Java_pc, intptr_t* last_Java_fp); |
| duke@435 | 43 | |
| duke@435 | 44 | |
| duke@435 | 45 | #define SET_LAST_JAVA_FRAME() |
| duke@435 | 46 | |
| duke@435 | 47 | #define RESET_LAST_JAVA_FRAME() THREAD->frame_anchor()->set_flags(0); |
| duke@435 | 48 | |
| duke@435 | 49 | /* |
| duke@435 | 50 | * Macros for accessing the stack. |
| duke@435 | 51 | */ |
| duke@435 | 52 | #undef STACK_INT |
| duke@435 | 53 | #undef STACK_FLOAT |
| duke@435 | 54 | #undef STACK_ADDR |
| duke@435 | 55 | #undef STACK_OBJECT |
| duke@435 | 56 | #undef STACK_DOUBLE |
| duke@435 | 57 | #undef STACK_LONG |
| duke@435 | 58 | // JavaStack Implementation |
| duke@435 | 59 | |
| duke@435 | 60 | |
| duke@435 | 61 | #define GET_STACK_SLOT(offset) (*((intptr_t*) &topOfStack[-(offset)])) |
| duke@435 | 62 | #define STACK_SLOT(offset) ((address) &topOfStack[-(offset)]) |
| duke@435 | 63 | #define STACK_ADDR(offset) (*((address *) &topOfStack[-(offset)])) |
| duke@435 | 64 | #define STACK_INT(offset) (*((jint*) &topOfStack[-(offset)])) |
| duke@435 | 65 | #define STACK_FLOAT(offset) (*((jfloat *) &topOfStack[-(offset)])) |
| duke@435 | 66 | #define STACK_OBJECT(offset) (*((oop *) &topOfStack [-(offset)])) |
| duke@435 | 67 | #define STACK_DOUBLE(offset) (((VMJavaVal64*) &topOfStack[-(offset)])->d) |
| duke@435 | 68 | #define STACK_LONG(offset) (((VMJavaVal64 *) &topOfStack[-(offset)])->l) |
| duke@435 | 69 | |
| duke@435 | 70 | #define SET_STACK_SLOT(value, offset) (*(intptr_t*)&topOfStack[-(offset)] = *(intptr_t*)(value)) |
| duke@435 | 71 | #define SET_STACK_ADDR(value, offset) (*((address *)&topOfStack[-(offset)]) = (value)) |
| duke@435 | 72 | #define SET_STACK_INT(value, offset) (*((jint *)&topOfStack[-(offset)]) = (value)) |
| duke@435 | 73 | #define SET_STACK_FLOAT(value, offset) (*((jfloat *)&topOfStack[-(offset)]) = (value)) |
| duke@435 | 74 | #define SET_STACK_OBJECT(value, offset) (*((oop *)&topOfStack[-(offset)]) = (value)) |
| duke@435 | 75 | #define SET_STACK_DOUBLE(value, offset) (((VMJavaVal64*)&topOfStack[-(offset)])->d = (value)) |
| duke@435 | 76 | #define SET_STACK_DOUBLE_FROM_ADDR(addr, offset) (((VMJavaVal64*)&topOfStack[-(offset)])->d = \ |
| duke@435 | 77 | ((VMJavaVal64*)(addr))->d) |
| duke@435 | 78 | #define SET_STACK_LONG(value, offset) (((VMJavaVal64*)&topOfStack[-(offset)])->l = (value)) |
| duke@435 | 79 | #define SET_STACK_LONG_FROM_ADDR(addr, offset) (((VMJavaVal64*)&topOfStack[-(offset)])->l = \ |
| duke@435 | 80 | ((VMJavaVal64*)(addr))->l) |
| duke@435 | 81 | |
| duke@435 | 82 | #define LOCALS_SLOT(offset) ((intptr_t*)&locals[-(offset)]) |
| duke@435 | 83 | #define LOCALS_ADDR(offset) ((address)locals[-(offset)]) |
| sgoldman@558 | 84 | #define LOCALS_INT(offset) (*((jint*)&locals[-(offset)])) |
| duke@435 | 85 | #define LOCALS_FLOAT(offset) (*((jfloat*)&locals[-(offset)])) |
| duke@435 | 86 | #define LOCALS_OBJECT(offset) ((oop)locals[-(offset)]) |
| duke@435 | 87 | #define LOCALS_DOUBLE(offset) (((VMJavaVal64*)&locals[-((offset) + 1)])->d) |
| duke@435 | 88 | #define LOCALS_LONG(offset) (((VMJavaVal64*)&locals[-((offset) + 1)])->l) |
| duke@435 | 89 | #define LOCALS_LONG_AT(offset) (((address)&locals[-((offset) + 1)])) |
| duke@435 | 90 | #define LOCALS_DOUBLE_AT(offset) (((address)&locals[-((offset) + 1)])) |
| duke@435 | 91 | |
| duke@435 | 92 | #define SET_LOCALS_SLOT(value, offset) (*(intptr_t*)&locals[-(offset)] = *(intptr_t *)(value)) |
| duke@435 | 93 | #define SET_LOCALS_ADDR(value, offset) (*((address *)&locals[-(offset)]) = (value)) |
| duke@435 | 94 | #define SET_LOCALS_INT(value, offset) (*((jint *)&locals[-(offset)]) = (value)) |
| duke@435 | 95 | #define SET_LOCALS_FLOAT(value, offset) (*((jfloat *)&locals[-(offset)]) = (value)) |
| duke@435 | 96 | #define SET_LOCALS_OBJECT(value, offset) (*((oop *)&locals[-(offset)]) = (value)) |
| duke@435 | 97 | #define SET_LOCALS_DOUBLE(value, offset) (((VMJavaVal64*)&locals[-((offset)+1)])->d = (value)) |
| duke@435 | 98 | #define SET_LOCALS_LONG(value, offset) (((VMJavaVal64*)&locals[-((offset)+1)])->l = (value)) |
| duke@435 | 99 | #define SET_LOCALS_DOUBLE_FROM_ADDR(addr, offset) (((VMJavaVal64*)&locals[-((offset)+1)])->d = \ |
| duke@435 | 100 | ((VMJavaVal64*)(addr))->d) |
| duke@435 | 101 | #define SET_LOCALS_LONG_FROM_ADDR(addr, offset) (((VMJavaVal64*)&locals[-((offset)+1)])->l = \ |
| duke@435 | 102 | ((VMJavaVal64*)(addr))->l) |
| stefank@2314 | 103 | |
| stefank@2314 | 104 | #endif // CPU_SPARC_VM_BYTECODEINTERPRETER_SPARC_HPP |
