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annotate src/cpu/x86/vm/interpreter_x86_32.cpp @ 5520:e05bb6f6c58b
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author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Fri, 08 Jun 2012 15:17:43 +0200 |
parents | 3d2ab563047a |
children | 6759698e3140 |
rev | line source |
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0 | 1 /* |
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7009309: JSR 292: compiler/6991596/Test6991596.java crashes on fastdebug JDK7/b122
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2 * Copyright (c) 1997, 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 #include "asm/assembler.hpp" | |
27 #include "interpreter/bytecodeHistogram.hpp" | |
28 #include "interpreter/interpreter.hpp" | |
29 #include "interpreter/interpreterGenerator.hpp" | |
30 #include "interpreter/interpreterRuntime.hpp" | |
31 #include "interpreter/templateTable.hpp" | |
32 #include "oops/arrayOop.hpp" | |
33 #include "oops/methodDataOop.hpp" | |
34 #include "oops/methodOop.hpp" | |
35 #include "oops/oop.inline.hpp" | |
36 #include "prims/jvmtiExport.hpp" | |
37 #include "prims/jvmtiThreadState.hpp" | |
38 #include "prims/methodHandles.hpp" | |
39 #include "runtime/arguments.hpp" | |
40 #include "runtime/deoptimization.hpp" | |
41 #include "runtime/frame.inline.hpp" | |
42 #include "runtime/sharedRuntime.hpp" | |
43 #include "runtime/stubRoutines.hpp" | |
44 #include "runtime/synchronizer.hpp" | |
45 #include "runtime/timer.hpp" | |
46 #include "runtime/vframeArray.hpp" | |
47 #include "utilities/debug.hpp" | |
48 #ifdef COMPILER1 | |
49 #include "c1/c1_Runtime1.hpp" | |
50 #endif | |
0 | 51 |
52 #define __ _masm-> | |
53 | |
54 //------------------------------------------------------------------------------------------------------------------------ | |
55 | |
56 address AbstractInterpreterGenerator::generate_slow_signature_handler() { | |
57 address entry = __ pc(); | |
58 // rbx,: method | |
59 // rcx: temporary | |
60 // rdi: pointer to locals | |
61 // rsp: end of copied parameters area | |
304 | 62 __ mov(rcx, rsp); |
0 | 63 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::slow_signature_handler), rbx, rdi, rcx); |
64 __ ret(0); | |
65 return entry; | |
66 } | |
67 | |
68 | |
69 // | |
70 // Various method entries (that c++ and asm interpreter agree upon) | |
71 //------------------------------------------------------------------------------------------------------------------------ | |
72 // | |
73 // | |
74 | |
75 // Empty method, generate a very fast return. | |
76 | |
77 address InterpreterGenerator::generate_empty_entry(void) { | |
78 | |
79 // rbx,: methodOop | |
80 // rcx: receiver (unused) | |
81 // rsi: previous interpreter state (C++ interpreter) must preserve | |
82 // rsi: sender sp must set sp to this value on return | |
83 | |
84 if (!UseFastEmptyMethods) return NULL; | |
85 | |
86 address entry_point = __ pc(); | |
87 | |
88 // If we need a safepoint check, generate full interpreter entry. | |
89 Label slow_path; | |
90 ExternalAddress state(SafepointSynchronize::address_of_state()); | |
91 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
92 SafepointSynchronize::_not_synchronized); | |
93 __ jcc(Assembler::notEqual, slow_path); | |
94 | |
95 // do nothing for empty methods (do not even increment invocation counter) | |
96 // Code: _return | |
97 // _return | |
98 // return w/o popping parameters | |
304 | 99 __ pop(rax); |
100 __ mov(rsp, rsi); | |
0 | 101 __ jmp(rax); |
102 | |
103 __ bind(slow_path); | |
104 (void) generate_normal_entry(false); | |
105 return entry_point; | |
106 } | |
107 | |
108 address InterpreterGenerator::generate_math_entry(AbstractInterpreter::MethodKind kind) { | |
109 | |
110 // rbx,: methodOop | |
111 // rcx: scratrch | |
112 // rsi: sender sp | |
113 | |
114 if (!InlineIntrinsics) return NULL; // Generate a vanilla entry | |
115 | |
116 address entry_point = __ pc(); | |
117 | |
118 // These don't need a safepoint check because they aren't virtually | |
119 // callable. We won't enter these intrinsics from compiled code. | |
120 // If in the future we added an intrinsic which was virtually callable | |
121 // we'd have to worry about how to safepoint so that this code is used. | |
122 | |
123 // mathematical functions inlined by compiler | |
124 // (interpreter must provide identical implementation | |
125 // in order to avoid monotonicity bugs when switching | |
126 // from interpreter to compiler in the middle of some | |
127 // computation) | |
128 // | |
129 // stack: [ ret adr ] <-- rsp | |
130 // [ lo(arg) ] | |
131 // [ hi(arg) ] | |
132 // | |
133 | |
134 // Note: For JDK 1.2 StrictMath doesn't exist and Math.sin/cos/sqrt are | |
135 // native methods. Interpreter::method_kind(...) does a check for | |
136 // native methods first before checking for intrinsic methods and | |
137 // thus will never select this entry point. Make sure it is not | |
138 // called accidentally since the SharedRuntime entry points will | |
139 // not work for JDK 1.2. | |
140 // | |
141 // We no longer need to check for JDK 1.2 since it's EOL'ed. | |
142 // The following check existed in pre 1.6 implementation, | |
143 // if (Universe::is_jdk12x_version()) { | |
144 // __ should_not_reach_here(); | |
145 // } | |
146 // Universe::is_jdk12x_version() always returns false since | |
147 // the JDK version is not yet determined when this method is called. | |
148 // This method is called during interpreter_init() whereas | |
149 // JDK version is only determined when universe2_init() is called. | |
150 | |
151 // Note: For JDK 1.3 StrictMath exists and Math.sin/cos/sqrt are | |
152 // java methods. Interpreter::method_kind(...) will select | |
153 // this entry point for the corresponding methods in JDK 1.3. | |
154 // get argument | |
1506 | 155 __ fld_d(Address(rsp, 1*wordSize)); |
0 | 156 switch (kind) { |
157 case Interpreter::java_lang_math_sin : | |
158 __ trigfunc('s'); | |
159 break; | |
160 case Interpreter::java_lang_math_cos : | |
161 __ trigfunc('c'); | |
162 break; | |
163 case Interpreter::java_lang_math_tan : | |
164 __ trigfunc('t'); | |
165 break; | |
166 case Interpreter::java_lang_math_sqrt: | |
167 __ fsqrt(); | |
168 break; | |
169 case Interpreter::java_lang_math_abs: | |
170 __ fabs(); | |
171 break; | |
172 case Interpreter::java_lang_math_log: | |
173 __ flog(); | |
174 // Store to stack to convert 80bit precision back to 64bits | |
175 __ push_fTOS(); | |
176 __ pop_fTOS(); | |
177 break; | |
178 case Interpreter::java_lang_math_log10: | |
179 __ flog10(); | |
180 // Store to stack to convert 80bit precision back to 64bits | |
181 __ push_fTOS(); | |
182 __ pop_fTOS(); | |
183 break; | |
184 default : | |
185 ShouldNotReachHere(); | |
186 } | |
187 | |
188 // return double result in xmm0 for interpreter and compilers. | |
189 if (UseSSE >= 2) { | |
304 | 190 __ subptr(rsp, 2*wordSize); |
0 | 191 __ fstp_d(Address(rsp, 0)); |
192 __ movdbl(xmm0, Address(rsp, 0)); | |
304 | 193 __ addptr(rsp, 2*wordSize); |
0 | 194 } |
195 | |
196 // done, result in FPU ST(0) or XMM0 | |
304 | 197 __ pop(rdi); // get return address |
198 __ mov(rsp, rsi); // set sp to sender sp | |
0 | 199 __ jmp(rdi); |
200 | |
201 return entry_point; | |
202 } | |
203 | |
204 | |
205 // Abstract method entry | |
206 // Attempt to execute abstract method. Throw exception | |
207 address InterpreterGenerator::generate_abstract_entry(void) { | |
208 | |
209 // rbx,: methodOop | |
210 // rcx: receiver (unused) | |
211 // rsi: previous interpreter state (C++ interpreter) must preserve | |
212 | |
213 // rsi: sender SP | |
214 | |
215 address entry_point = __ pc(); | |
216 | |
217 // abstract method entry | |
218 | |
710 | 219 // pop return address, reset last_sp to NULL |
220 __ empty_expression_stack(); | |
221 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) | |
222 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) | |
223 | |
0 | 224 // throw exception |
225 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); | |
226 // the call_VM checks for exception, so we should never return here. | |
227 __ should_not_reach_here(); | |
228 | |
229 return entry_point; | |
230 } | |
231 | |
710 | 232 |
233 // Method handle invoker | |
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234 // Dispatch a method of the form java.lang.invoke.MethodHandles::invoke(...) |
710 | 235 address InterpreterGenerator::generate_method_handle_entry(void) { |
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236 if (!EnableInvokeDynamic) { |
710 | 237 return generate_abstract_entry(); |
238 } | |
239 | |
240 address entry_point = MethodHandles::generate_method_handle_interpreter_entry(_masm); | |
241 | |
242 return entry_point; | |
243 } | |
244 | |
0 | 245 void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) { |
246 | |
247 // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in | |
248 // the days we had adapter frames. When we deoptimize a situation where a | |
249 // compiled caller calls a compiled caller will have registers it expects | |
250 // to survive the call to the callee. If we deoptimize the callee the only | |
251 // way we can restore these registers is to have the oldest interpreter | |
252 // frame that we create restore these values. That is what this routine | |
253 // will accomplish. | |
254 | |
255 // At the moment we have modified c2 to not have any callee save registers | |
256 // so this problem does not exist and this routine is just a place holder. | |
257 | |
258 assert(f->is_interpreted_frame(), "must be interpreted"); | |
259 } |