Wed, 16 Feb 2011 13:30:31 -0800
7013964: openjdk LICENSE file needs rebranding
Reviewed-by: darcy, katleman, jjg
duke@435 | 1 | /* |
trims@1907 | 2 | * Copyright (c) 1997, 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 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "asm/assembler.hpp" |
stefank@2314 | 27 | #include "interpreter/bytecodeHistogram.hpp" |
stefank@2314 | 28 | #include "interpreter/interpreter.hpp" |
stefank@2314 | 29 | #include "interpreter/interpreterGenerator.hpp" |
stefank@2314 | 30 | #include "interpreter/interpreterRuntime.hpp" |
stefank@2314 | 31 | #include "interpreter/templateTable.hpp" |
stefank@2314 | 32 | #include "oops/arrayOop.hpp" |
stefank@2314 | 33 | #include "oops/methodDataOop.hpp" |
stefank@2314 | 34 | #include "oops/methodOop.hpp" |
stefank@2314 | 35 | #include "oops/oop.inline.hpp" |
stefank@2314 | 36 | #include "prims/jvmtiExport.hpp" |
stefank@2314 | 37 | #include "prims/jvmtiThreadState.hpp" |
stefank@2314 | 38 | #include "prims/methodHandles.hpp" |
stefank@2314 | 39 | #include "runtime/arguments.hpp" |
stefank@2314 | 40 | #include "runtime/deoptimization.hpp" |
stefank@2314 | 41 | #include "runtime/frame.inline.hpp" |
stefank@2314 | 42 | #include "runtime/sharedRuntime.hpp" |
stefank@2314 | 43 | #include "runtime/stubRoutines.hpp" |
stefank@2314 | 44 | #include "runtime/synchronizer.hpp" |
stefank@2314 | 45 | #include "runtime/timer.hpp" |
stefank@2314 | 46 | #include "runtime/vframeArray.hpp" |
stefank@2314 | 47 | #include "utilities/debug.hpp" |
stefank@2314 | 48 | #ifdef COMPILER1 |
stefank@2314 | 49 | #include "c1/c1_Runtime1.hpp" |
stefank@2314 | 50 | #endif |
duke@435 | 51 | |
duke@435 | 52 | #define __ _masm-> |
duke@435 | 53 | |
duke@435 | 54 | // Initialize the sentinel used to distinguish an interpreter return address. |
duke@435 | 55 | const int Interpreter::return_sentinel = 0xfeedbeed; |
duke@435 | 56 | |
duke@435 | 57 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 58 | |
duke@435 | 59 | address AbstractInterpreterGenerator::generate_slow_signature_handler() { |
duke@435 | 60 | address entry = __ pc(); |
duke@435 | 61 | // rbx,: method |
duke@435 | 62 | // rcx: temporary |
duke@435 | 63 | // rdi: pointer to locals |
duke@435 | 64 | // rsp: end of copied parameters area |
never@739 | 65 | __ mov(rcx, rsp); |
duke@435 | 66 | __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::slow_signature_handler), rbx, rdi, rcx); |
duke@435 | 67 | __ ret(0); |
duke@435 | 68 | return entry; |
duke@435 | 69 | } |
duke@435 | 70 | |
duke@435 | 71 | |
duke@435 | 72 | // |
duke@435 | 73 | // Various method entries (that c++ and asm interpreter agree upon) |
duke@435 | 74 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 75 | // |
duke@435 | 76 | // |
duke@435 | 77 | |
duke@435 | 78 | // Empty method, generate a very fast return. |
duke@435 | 79 | |
duke@435 | 80 | address InterpreterGenerator::generate_empty_entry(void) { |
duke@435 | 81 | |
duke@435 | 82 | // rbx,: methodOop |
duke@435 | 83 | // rcx: receiver (unused) |
duke@435 | 84 | // rsi: previous interpreter state (C++ interpreter) must preserve |
duke@435 | 85 | // rsi: sender sp must set sp to this value on return |
duke@435 | 86 | |
duke@435 | 87 | if (!UseFastEmptyMethods) return NULL; |
duke@435 | 88 | |
duke@435 | 89 | address entry_point = __ pc(); |
duke@435 | 90 | |
duke@435 | 91 | // If we need a safepoint check, generate full interpreter entry. |
duke@435 | 92 | Label slow_path; |
duke@435 | 93 | ExternalAddress state(SafepointSynchronize::address_of_state()); |
duke@435 | 94 | __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), |
duke@435 | 95 | SafepointSynchronize::_not_synchronized); |
duke@435 | 96 | __ jcc(Assembler::notEqual, slow_path); |
duke@435 | 97 | |
duke@435 | 98 | // do nothing for empty methods (do not even increment invocation counter) |
duke@435 | 99 | // Code: _return |
duke@435 | 100 | // _return |
duke@435 | 101 | // return w/o popping parameters |
never@739 | 102 | __ pop(rax); |
never@739 | 103 | __ mov(rsp, rsi); |
duke@435 | 104 | __ jmp(rax); |
duke@435 | 105 | |
duke@435 | 106 | __ bind(slow_path); |
duke@435 | 107 | (void) generate_normal_entry(false); |
duke@435 | 108 | return entry_point; |
duke@435 | 109 | } |
duke@435 | 110 | |
duke@435 | 111 | address InterpreterGenerator::generate_math_entry(AbstractInterpreter::MethodKind kind) { |
duke@435 | 112 | |
duke@435 | 113 | // rbx,: methodOop |
duke@435 | 114 | // rcx: scratrch |
duke@435 | 115 | // rsi: sender sp |
duke@435 | 116 | |
duke@435 | 117 | if (!InlineIntrinsics) return NULL; // Generate a vanilla entry |
duke@435 | 118 | |
duke@435 | 119 | address entry_point = __ pc(); |
duke@435 | 120 | |
duke@435 | 121 | // These don't need a safepoint check because they aren't virtually |
duke@435 | 122 | // callable. We won't enter these intrinsics from compiled code. |
duke@435 | 123 | // If in the future we added an intrinsic which was virtually callable |
duke@435 | 124 | // we'd have to worry about how to safepoint so that this code is used. |
duke@435 | 125 | |
duke@435 | 126 | // mathematical functions inlined by compiler |
duke@435 | 127 | // (interpreter must provide identical implementation |
duke@435 | 128 | // in order to avoid monotonicity bugs when switching |
duke@435 | 129 | // from interpreter to compiler in the middle of some |
duke@435 | 130 | // computation) |
duke@435 | 131 | // |
duke@435 | 132 | // stack: [ ret adr ] <-- rsp |
duke@435 | 133 | // [ lo(arg) ] |
duke@435 | 134 | // [ hi(arg) ] |
duke@435 | 135 | // |
duke@435 | 136 | |
duke@435 | 137 | // Note: For JDK 1.2 StrictMath doesn't exist and Math.sin/cos/sqrt are |
duke@435 | 138 | // native methods. Interpreter::method_kind(...) does a check for |
duke@435 | 139 | // native methods first before checking for intrinsic methods and |
duke@435 | 140 | // thus will never select this entry point. Make sure it is not |
duke@435 | 141 | // called accidentally since the SharedRuntime entry points will |
duke@435 | 142 | // not work for JDK 1.2. |
duke@435 | 143 | // |
duke@435 | 144 | // We no longer need to check for JDK 1.2 since it's EOL'ed. |
duke@435 | 145 | // The following check existed in pre 1.6 implementation, |
duke@435 | 146 | // if (Universe::is_jdk12x_version()) { |
duke@435 | 147 | // __ should_not_reach_here(); |
duke@435 | 148 | // } |
duke@435 | 149 | // Universe::is_jdk12x_version() always returns false since |
duke@435 | 150 | // the JDK version is not yet determined when this method is called. |
duke@435 | 151 | // This method is called during interpreter_init() whereas |
duke@435 | 152 | // JDK version is only determined when universe2_init() is called. |
duke@435 | 153 | |
duke@435 | 154 | // Note: For JDK 1.3 StrictMath exists and Math.sin/cos/sqrt are |
duke@435 | 155 | // java methods. Interpreter::method_kind(...) will select |
duke@435 | 156 | // this entry point for the corresponding methods in JDK 1.3. |
duke@435 | 157 | // get argument |
twisti@1861 | 158 | __ fld_d(Address(rsp, 1*wordSize)); |
duke@435 | 159 | switch (kind) { |
duke@435 | 160 | case Interpreter::java_lang_math_sin : |
duke@435 | 161 | __ trigfunc('s'); |
duke@435 | 162 | break; |
duke@435 | 163 | case Interpreter::java_lang_math_cos : |
duke@435 | 164 | __ trigfunc('c'); |
duke@435 | 165 | break; |
duke@435 | 166 | case Interpreter::java_lang_math_tan : |
duke@435 | 167 | __ trigfunc('t'); |
duke@435 | 168 | break; |
duke@435 | 169 | case Interpreter::java_lang_math_sqrt: |
duke@435 | 170 | __ fsqrt(); |
duke@435 | 171 | break; |
duke@435 | 172 | case Interpreter::java_lang_math_abs: |
duke@435 | 173 | __ fabs(); |
duke@435 | 174 | break; |
duke@435 | 175 | case Interpreter::java_lang_math_log: |
duke@435 | 176 | __ flog(); |
duke@435 | 177 | // Store to stack to convert 80bit precision back to 64bits |
duke@435 | 178 | __ push_fTOS(); |
duke@435 | 179 | __ pop_fTOS(); |
duke@435 | 180 | break; |
duke@435 | 181 | case Interpreter::java_lang_math_log10: |
duke@435 | 182 | __ flog10(); |
duke@435 | 183 | // Store to stack to convert 80bit precision back to 64bits |
duke@435 | 184 | __ push_fTOS(); |
duke@435 | 185 | __ pop_fTOS(); |
duke@435 | 186 | break; |
duke@435 | 187 | default : |
duke@435 | 188 | ShouldNotReachHere(); |
duke@435 | 189 | } |
duke@435 | 190 | |
duke@435 | 191 | // return double result in xmm0 for interpreter and compilers. |
duke@435 | 192 | if (UseSSE >= 2) { |
never@739 | 193 | __ subptr(rsp, 2*wordSize); |
duke@435 | 194 | __ fstp_d(Address(rsp, 0)); |
duke@435 | 195 | __ movdbl(xmm0, Address(rsp, 0)); |
never@739 | 196 | __ addptr(rsp, 2*wordSize); |
duke@435 | 197 | } |
duke@435 | 198 | |
duke@435 | 199 | // done, result in FPU ST(0) or XMM0 |
never@739 | 200 | __ pop(rdi); // get return address |
never@739 | 201 | __ mov(rsp, rsi); // set sp to sender sp |
duke@435 | 202 | __ jmp(rdi); |
duke@435 | 203 | |
duke@435 | 204 | return entry_point; |
duke@435 | 205 | } |
duke@435 | 206 | |
duke@435 | 207 | |
duke@435 | 208 | // Abstract method entry |
duke@435 | 209 | // Attempt to execute abstract method. Throw exception |
duke@435 | 210 | address InterpreterGenerator::generate_abstract_entry(void) { |
duke@435 | 211 | |
duke@435 | 212 | // rbx,: methodOop |
duke@435 | 213 | // rcx: receiver (unused) |
duke@435 | 214 | // rsi: previous interpreter state (C++ interpreter) must preserve |
duke@435 | 215 | |
duke@435 | 216 | // rsi: sender SP |
duke@435 | 217 | |
duke@435 | 218 | address entry_point = __ pc(); |
duke@435 | 219 | |
duke@435 | 220 | // abstract method entry |
duke@435 | 221 | |
jrose@1145 | 222 | // pop return address, reset last_sp to NULL |
jrose@1145 | 223 | __ empty_expression_stack(); |
jrose@1145 | 224 | __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
jrose@1145 | 225 | __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
jrose@1145 | 226 | |
duke@435 | 227 | // throw exception |
duke@435 | 228 | __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
duke@435 | 229 | // the call_VM checks for exception, so we should never return here. |
duke@435 | 230 | __ should_not_reach_here(); |
duke@435 | 231 | |
duke@435 | 232 | return entry_point; |
duke@435 | 233 | } |
duke@435 | 234 | |
jrose@1145 | 235 | |
jrose@1145 | 236 | // Method handle invoker |
jrose@1145 | 237 | // Dispatch a method of the form java.dyn.MethodHandles::invoke(...) |
jrose@1145 | 238 | address InterpreterGenerator::generate_method_handle_entry(void) { |
jrose@1145 | 239 | if (!EnableMethodHandles) { |
jrose@1145 | 240 | return generate_abstract_entry(); |
jrose@1145 | 241 | } |
jrose@1145 | 242 | |
jrose@1145 | 243 | address entry_point = MethodHandles::generate_method_handle_interpreter_entry(_masm); |
jrose@1145 | 244 | |
jrose@1145 | 245 | return entry_point; |
jrose@1145 | 246 | } |
jrose@1145 | 247 | |
jrose@1145 | 248 | |
duke@435 | 249 | // This method tells the deoptimizer how big an interpreted frame must be: |
duke@435 | 250 | int AbstractInterpreter::size_activation(methodOop method, |
duke@435 | 251 | int tempcount, |
duke@435 | 252 | int popframe_extra_args, |
duke@435 | 253 | int moncount, |
duke@435 | 254 | int callee_param_count, |
duke@435 | 255 | int callee_locals, |
duke@435 | 256 | bool is_top_frame) { |
duke@435 | 257 | return layout_activation(method, |
duke@435 | 258 | tempcount, |
duke@435 | 259 | popframe_extra_args, |
duke@435 | 260 | moncount, |
duke@435 | 261 | callee_param_count, |
duke@435 | 262 | callee_locals, |
duke@435 | 263 | (frame*) NULL, |
duke@435 | 264 | (frame*) NULL, |
duke@435 | 265 | is_top_frame); |
duke@435 | 266 | } |
duke@435 | 267 | |
duke@435 | 268 | void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) { |
duke@435 | 269 | |
duke@435 | 270 | // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in |
duke@435 | 271 | // the days we had adapter frames. When we deoptimize a situation where a |
duke@435 | 272 | // compiled caller calls a compiled caller will have registers it expects |
duke@435 | 273 | // to survive the call to the callee. If we deoptimize the callee the only |
duke@435 | 274 | // way we can restore these registers is to have the oldest interpreter |
duke@435 | 275 | // frame that we create restore these values. That is what this routine |
duke@435 | 276 | // will accomplish. |
duke@435 | 277 | |
duke@435 | 278 | // At the moment we have modified c2 to not have any callee save registers |
duke@435 | 279 | // so this problem does not exist and this routine is just a place holder. |
duke@435 | 280 | |
duke@435 | 281 | assert(f->is_interpreted_frame(), "must be interpreted"); |
duke@435 | 282 | } |