Mercurial > hg > truffle
annotate src/cpu/sparc/vm/runtime_sparc.cpp @ 3883:ce9bde819dcb hs22-b04
7086589: bump the hs22 build number to 04
Reviewed-by: johnc
Contributed-by: alejandro.murillo@oracle.com
| author | jcoomes |
|---|---|
| date | Fri, 02 Sep 2011 03:49:30 -0700 |
| parents | cba7b5c2d53f |
| children | f0c2369fda5a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 2011, 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_sparc.inline.hpp" | |
| 29 #include "classfile/systemDictionary.hpp" | |
| 30 #include "code/vmreg.hpp" | |
| 31 #include "interpreter/interpreter.hpp" | |
| 32 #include "nativeInst_sparc.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_sparc.inline.hpp" | |
| 40 #endif | |
| 0 | 41 |
| 42 | |
| 43 #define __ masm-> | |
| 44 | |
| 45 //------------------------------ generate_exception_blob --------------------------- | |
| 46 // creates exception blob at the end | |
| 47 // Using exception blob, this code is jumped from a compiled method. | |
| 48 // (see emit_exception_handler in sparc.ad file) | |
| 49 // | |
| 50 // Given an exception pc at a call we call into the runtime for the | |
| 51 // handler in this method. This handler might merely restore state | |
| 52 // (i.e. callee save registers) unwind the frame and jump to the | |
| 53 // exception handler for the nmethod if there is no Java level handler | |
| 54 // for the nmethod. | |
| 55 // | |
| 56 // This code is entered with a jmp. | |
| 57 // | |
| 58 // Arguments: | |
| 59 // O0: exception oop | |
| 60 // O1: exception pc | |
| 61 // | |
| 62 // Results: | |
| 63 // O0: exception oop | |
| 64 // O1: exception pc in caller or ??? | |
| 65 // destination: exception handler of caller | |
| 66 // | |
| 67 // Note: the exception pc MUST be at a call (precise debug information) | |
| 68 // | |
| 69 void OptoRuntime::generate_exception_blob() { | |
| 70 // allocate space for code | |
| 71 ResourceMark rm; | |
| 72 int pad = VerifyThread ? 256 : 0;// Extra slop space for more verify code | |
| 73 | |
| 74 // setup code generation tools | |
| 75 // Measured 8/7/03 at 256 in 32bit debug build (no VerifyThread) | |
| 76 // Measured 8/7/03 at 528 in 32bit debug build (VerifyThread) | |
| 77 CodeBuffer buffer("exception_blob", 600+pad, 512); | |
| 78 MacroAssembler* masm = new MacroAssembler(&buffer); | |
| 79 | |
| 80 int framesize_in_bytes = __ total_frame_size_in_bytes(0); | |
| 81 int framesize_in_words = framesize_in_bytes / wordSize; | |
| 82 int framesize_in_slots = framesize_in_bytes / sizeof(jint); | |
| 83 | |
| 84 Label L; | |
| 85 | |
| 86 int start = __ offset(); | |
| 87 | |
| 88 __ verify_thread(); | |
| 727 | 89 __ st_ptr(Oexception, G2_thread, JavaThread::exception_oop_offset()); |
| 90 __ st_ptr(Oissuing_pc, G2_thread, JavaThread::exception_pc_offset()); | |
| 0 | 91 |
| 92 // This call does all the hard work. It checks if an exception catch | |
| 93 // exists in the method. | |
| 94 // If so, it returns the handler address. | |
| 95 // If the nmethod has been deoptimized and it had a handler the handler | |
| 96 // address is the deopt blob unpack_with_exception entry. | |
| 97 // | |
| 98 // If no handler exists it prepares for stack-unwinding, restoring the callee-save | |
| 99 // registers of the frame being removed. | |
| 100 // | |
| 101 __ save_frame(0); | |
| 102 | |
| 103 __ mov(G2_thread, O0); | |
| 104 __ set_last_Java_frame(SP, noreg); | |
| 105 __ save_thread(L7_thread_cache); | |
| 106 | |
| 107 // This call can block at exit and nmethod can be deoptimized at that | |
| 108 // point. If the nmethod had a catch point we would jump to the | |
| 109 // now deoptimized catch point and fall thru the vanilla deopt | |
| 110 // path and lose the exception | |
| 111 // Sure would be simpler if this call didn't block! | |
| 112 __ call(CAST_FROM_FN_PTR(address, OptoRuntime::handle_exception_C), relocInfo::runtime_call_type); | |
| 113 __ delayed()->mov(L7_thread_cache, O0); | |
| 114 | |
| 115 // Set an oopmap for the call site. This oopmap will only be used if we | |
| 116 // are unwinding the stack. Hence, all locations will be dead. | |
| 117 // Callee-saved registers will be the same as the frame above (i.e., | |
| 118 // handle_exception_stub), since they were restored when we got the | |
| 119 // exception. | |
| 120 | |
| 121 OopMapSet *oop_maps = new OopMapSet(); | |
| 122 oop_maps->add_gc_map( __ offset()-start, new OopMap(framesize_in_slots, 0)); | |
| 123 | |
| 124 __ bind(L); | |
| 125 __ restore_thread(L7_thread_cache); | |
| 126 __ reset_last_Java_frame(); | |
| 127 | |
| 128 __ mov(O0, G3_scratch); // Move handler address to temp | |
| 129 __ restore(); | |
| 130 | |
| 1567 | 131 // Restore SP from L7 if the exception PC is a MethodHandle call site. |
| 132 __ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), O7); | |
| 133 __ tst(O7); | |
| 134 __ movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); | |
| 135 | |
| 0 | 136 // G3_scratch contains handler address |
| 137 // Since this may be the deopt blob we must set O7 to look like we returned | |
| 138 // from the original pc that threw the exception | |
| 139 | |
| 727 | 140 __ ld_ptr(G2_thread, JavaThread::exception_pc_offset(), O7); |
| 0 | 141 __ sub(O7, frame::pc_return_offset, O7); |
| 142 | |
| 143 | |
| 144 assert(Assembler::is_simm13(in_bytes(JavaThread::exception_oop_offset())), "exception offset overflows simm13, following ld instruction cannot be in delay slot"); | |
| 727 | 145 __ ld_ptr(G2_thread, JavaThread::exception_oop_offset(), Oexception); // O0 |
| 0 | 146 #ifdef ASSERT |
| 727 | 147 __ st_ptr(G0, G2_thread, JavaThread::exception_handler_pc_offset()); |
| 148 __ st_ptr(G0, G2_thread, JavaThread::exception_pc_offset()); | |
| 0 | 149 #endif |
| 150 __ JMP(G3_scratch, 0); | |
| 151 // Clear the exception oop so GC no longer processes it as a root. | |
| 727 | 152 __ delayed()->st_ptr(G0, G2_thread, JavaThread::exception_oop_offset()); |
| 0 | 153 |
| 154 // ------------- | |
| 155 // make sure all code is generated | |
| 156 masm->flush(); | |
| 157 | |
| 158 _exception_blob = ExceptionBlob::create(&buffer, oop_maps, framesize_in_words); | |
| 159 } |