Mercurial > hg > graal-compiler
annotate src/cpu/ppc/vm/runtime_ppc.cpp @ 14726:92aa6797d639
Backed out merge changeset: b51e29501f30
Backed out merge revision to its first parent (8f483e200405)
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Mon, 24 Mar 2014 21:30:43 +0100 |
| parents | e5e8aa897002 |
| children |
| rev | line source |
|---|---|
| 14445 | 1 /* |
| 2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. | |
| 3 * Copyright 2012, 2013 SAP AG. All rights reserved. | |
| 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 5 * | |
| 6 * This code is free software; you can redistribute it and/or modify it | |
| 7 * under the terms of the GNU General Public License version 2 only, as | |
| 8 * published by the Free Software Foundation. | |
| 9 * | |
| 10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 13 * version 2 for more details (a copy is included in the LICENSE file that | |
| 14 * accompanied this code). | |
| 15 * | |
| 16 * You should have received a copy of the GNU General Public License version | |
| 17 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 19 * | |
| 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 21 * or visit www.oracle.com if you need additional information or have any | |
| 22 * questions. | |
| 23 * | |
| 24 */ | |
| 25 | |
| 26 #include "precompiled.hpp" | |
| 27 #ifdef COMPILER2 | |
| 28 #include "asm/assembler.inline.hpp" | |
| 29 #include "asm/macroAssembler.inline.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "code/vmreg.hpp" | |
| 32 #include "interpreter/interpreter.hpp" | |
| 33 #include "nativeInst_ppc.hpp" | |
| 34 #include "opto/runtime.hpp" | |
| 35 #include "runtime/interfaceSupport.hpp" | |
| 36 #include "runtime/sharedRuntime.hpp" | |
| 37 #include "runtime/stubRoutines.hpp" | |
| 38 #include "runtime/vframeArray.hpp" | |
| 39 #include "utilities/globalDefinitions.hpp" | |
| 40 #include "vmreg_ppc.inline.hpp" | |
| 41 #endif | |
| 42 | |
| 43 #define __ masm-> | |
| 44 | |
| 45 | |
| 46 #ifdef COMPILER2 | |
| 47 | |
| 48 // SP adjustment (must use unextended SP) for method handle call sites | |
| 49 // during exception handling. | |
| 50 static intptr_t adjust_SP_for_methodhandle_callsite(JavaThread *thread) { | |
| 51 RegisterMap map(thread, false); | |
| 52 // The frame constructor will do the correction for us (see frame::adjust_unextended_SP). | |
| 53 frame mh_caller_frame = thread->last_frame().sender(&map); | |
| 54 assert(mh_caller_frame.is_compiled_frame(), "Only may reach here for compiled MH call sites"); | |
| 55 return (intptr_t) mh_caller_frame.unextended_sp(); | |
| 56 } | |
| 57 | |
| 58 //------------------------------generate_exception_blob--------------------------- | |
| 59 // Creates exception blob at the end. | |
| 60 // Using exception blob, this code is jumped from a compiled method. | |
| 61 // | |
| 62 // Given an exception pc at a call we call into the runtime for the | |
| 63 // handler in this method. This handler might merely restore state | |
| 64 // (i.e. callee save registers) unwind the frame and jump to the | |
| 65 // exception handler for the nmethod if there is no Java level handler | |
| 66 // for the nmethod. | |
| 67 // | |
| 68 // This code is entered with a jmp. | |
| 69 // | |
| 70 // Arguments: | |
| 71 // R3_ARG1: exception oop | |
| 72 // R4_ARG2: exception pc | |
| 73 // | |
| 74 // Results: | |
| 75 // R3_ARG1: exception oop | |
| 76 // R4_ARG2: exception pc in caller | |
| 77 // destination: exception handler of caller | |
| 78 // | |
| 79 // Note: the exception pc MUST be at a call (precise debug information) | |
| 80 // | |
| 81 void OptoRuntime::generate_exception_blob() { | |
| 82 // Allocate space for the code. | |
| 83 ResourceMark rm; | |
| 84 // Setup code generation tools. | |
| 85 CodeBuffer buffer("exception_blob", 2048, 1024); | |
| 86 InterpreterMacroAssembler* masm = new InterpreterMacroAssembler(&buffer); | |
| 87 | |
| 88 address start = __ pc(); | |
| 89 | |
|
14726
92aa6797d639
Backed out merge changeset: b51e29501f30
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parents:
14684
diff
changeset
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90 int frame_size_in_bytes = frame::abi_112_size; |
| 14445 | 91 OopMap* map = new OopMap(frame_size_in_bytes / sizeof(jint), 0); |
| 92 | |
| 93 // Exception pc is 'return address' for stack walker. | |
| 94 __ std(R4_ARG2/*exception pc*/, _abi(lr), R1_SP); | |
| 95 | |
| 96 // Store the exception in the Thread object. | |
| 97 __ std(R3_ARG1/*exception oop*/, in_bytes(JavaThread::exception_oop_offset()), R16_thread); | |
| 98 __ std(R4_ARG2/*exception pc*/, in_bytes(JavaThread::exception_pc_offset()), R16_thread); | |
| 99 | |
| 100 // Save callee-saved registers. | |
| 101 // Push a C frame for the exception blob. It is needed for the C call later on. | |
|
14726
92aa6797d639
Backed out merge changeset: b51e29501f30
Doug Simon <doug.simon@oracle.com>
parents:
14684
diff
changeset
|
102 __ push_frame_abi112(0, R11_scratch1); |
| 14445 | 103 |
| 104 // This call does all the hard work. It checks if an exception handler | |
| 105 // exists in the method. | |
| 106 // If so, it returns the handler address. | |
| 107 // If not, it prepares for stack-unwinding, restoring the callee-save | |
| 108 // registers of the frame being removed. | |
| 109 __ set_last_Java_frame(/*sp=*/R1_SP, noreg); | |
| 110 | |
| 111 __ mr(R3_ARG1, R16_thread); | |
| 112 __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, OptoRuntime::handle_exception_C), | |
| 113 relocInfo::none); | |
| 114 address calls_return_pc = __ last_calls_return_pc(); | |
| 115 # ifdef ASSERT | |
| 116 __ cmpdi(CCR0, R3_RET, 0); | |
| 117 __ asm_assert_ne("handle_exception_C must not return NULL", 0x601); | |
| 118 # endif | |
| 119 | |
| 120 // Set an oopmap for the call site. This oopmap will only be used if we | |
| 121 // are unwinding the stack. Hence, all locations will be dead. | |
| 122 // Callee-saved registers will be the same as the frame above (i.e., | |
| 123 // handle_exception_stub), since they were restored when we got the | |
| 124 // exception. | |
| 125 OopMapSet* oop_maps = new OopMapSet(); | |
| 126 oop_maps->add_gc_map(calls_return_pc - start, map); | |
| 127 | |
| 128 // Get unextended_sp for method handle call sites. | |
| 129 Label mh_callsite, mh_done; // Use a 2nd c call if it's a method handle call site. | |
| 130 __ lwa(R4_ARG2, in_bytes(JavaThread::is_method_handle_return_offset()), R16_thread); | |
| 131 __ cmpwi(CCR0, R4_ARG2, 0); | |
| 132 __ bne(CCR0, mh_callsite); | |
| 133 | |
| 134 __ mtctr(R3_RET); // Move address of exception handler to SR_CTR. | |
| 135 __ reset_last_Java_frame(); | |
| 136 __ pop_frame(); | |
| 137 | |
| 138 __ bind(mh_done); | |
| 139 // We have a handler in register SR_CTR (could be deopt blob). | |
| 140 | |
| 141 // Get the exception oop. | |
| 142 __ ld(R3_ARG1, in_bytes(JavaThread::exception_oop_offset()), R16_thread); | |
| 143 | |
| 144 // Get the exception pc in case we are deoptimized. | |
| 145 __ ld(R4_ARG2, in_bytes(JavaThread::exception_pc_offset()), R16_thread); | |
| 146 | |
| 147 // Reset thread values. | |
| 148 __ li(R0, 0); | |
| 149 #ifdef ASSERT | |
| 150 __ std(R0, in_bytes(JavaThread::exception_handler_pc_offset()), R16_thread); | |
| 151 __ std(R0, in_bytes(JavaThread::exception_pc_offset()), R16_thread); | |
| 152 #endif | |
| 153 // Clear the exception oop so GC no longer processes it as a root. | |
| 154 __ std(R0, in_bytes(JavaThread::exception_oop_offset()), R16_thread); | |
| 155 | |
| 156 // Move exception pc into SR_LR. | |
| 157 __ mtlr(R4_ARG2); | |
| 158 __ bctr(); | |
| 159 | |
| 160 | |
| 161 // Same as above, but also set sp to unextended_sp. | |
| 162 __ bind(mh_callsite); | |
| 163 __ mr(R31, R3_RET); // Save branch address. | |
| 164 __ mr(R3_ARG1, R16_thread); | |
| 165 __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, adjust_SP_for_methodhandle_callsite), relocInfo::none); | |
| 166 // Returns unextended_sp in R3_RET. | |
| 167 | |
| 168 __ mtctr(R31); // Move address of exception handler to SR_CTR. | |
| 169 __ reset_last_Java_frame(); | |
| 170 | |
| 171 __ mr(R1_SP, R3_RET); // Set sp to unextended_sp. | |
| 172 __ b(mh_done); | |
| 173 | |
| 174 | |
| 175 // Make sure all code is generated. | |
| 176 masm->flush(); | |
| 177 | |
| 178 // Set exception blob. | |
| 179 _exception_blob = ExceptionBlob::create(&buffer, oop_maps, | |
| 180 frame_size_in_bytes/wordSize); | |
| 181 } | |
| 182 | |
| 183 #endif // COMPILER2 |