1 /*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "asm/macroAssembler.hpp"
27 #include "interpreter/bytecodeHistogram.hpp"
28 #include "interpreter/interpreter.hpp"
29 #include "interpreter/interpreterGenerator.hpp"
30 #include "interpreter/interpreterRuntime.hpp"
31 #include "interpreter/interp_masm.hpp"
32 #include "interpreter/templateTable.hpp"
33 #include "oops/arrayOop.hpp"
34 #include "oops/methodData.hpp"
35 #include "oops/method.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "prims/jvmtiExport.hpp"
38 #include "prims/jvmtiThreadState.hpp"
39 #include "prims/methodHandles.hpp"
40 #include "runtime/arguments.hpp"
41 #include "runtime/deoptimization.hpp"
42 #include "runtime/frame.inline.hpp"
43 #include "runtime/sharedRuntime.hpp"
44 #include "runtime/stubRoutines.hpp"
45 #include "runtime/synchronizer.hpp"
46 #include "runtime/timer.hpp"
47 #include "runtime/vframeArray.hpp"
48 #include "utilities/debug.hpp"
49 #ifdef COMPILER1
50 #include "c1/c1_Runtime1.hpp"
51 #endif
52
53 #define __ _masm->
54
55 //------------------------------------------------------------------------------------------------------------------------
56
57 address AbstractInterpreterGenerator::generate_slow_signature_handler() {
58 address entry = __ pc();
59 // rbx,: method
60 // rcx: temporary
61 // rdi: pointer to locals
62 // rsp: end of copied parameters area
63 __ mov(rcx, rsp);
64 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::slow_signature_handler), rbx, rdi, rcx);
65 __ ret(0);
66 return entry;
67 }
68
69
70 address InterpreterGenerator::generate_math_entry(AbstractInterpreter::MethodKind kind) {
71
72 // rbx,: Method*
73 // rcx: scratrch
74 // rsi: sender sp
75
76 if (!InlineIntrinsics) return NULL; // Generate a vanilla entry
77
78 address entry_point = __ pc();
79
80 // These don't need a safepoint check because they aren't virtually
81 // callable. We won't enter these intrinsics from compiled code.
82 // If in the future we added an intrinsic which was virtually callable
83 // we'd have to worry about how to safepoint so that this code is used.
84
85 // mathematical functions inlined by compiler
86 // (interpreter must provide identical implementation
87 // in order to avoid monotonicity bugs when switching
88 // from interpreter to compiler in the middle of some
89 // computation)
90 //
91 // stack: [ ret adr ] <-- rsp
92 // [ lo(arg) ]
93 // [ hi(arg) ]
94 //
95
96 // Note: For JDK 1.2 StrictMath doesn't exist and Math.sin/cos/sqrt are
97 // native methods. Interpreter::method_kind(...) does a check for
98 // native methods first before checking for intrinsic methods and
99 // thus will never select this entry point. Make sure it is not
100 // called accidentally since the SharedRuntime entry points will
101 // not work for JDK 1.2.
102 //
103 // We no longer need to check for JDK 1.2 since it's EOL'ed.
104 // The following check existed in pre 1.6 implementation,
105 // if (Universe::is_jdk12x_version()) {
106 // __ should_not_reach_here();
107 // }
108 // Universe::is_jdk12x_version() always returns false since
109 // the JDK version is not yet determined when this method is called.
110 // This method is called during interpreter_init() whereas
111 // JDK version is only determined when universe2_init() is called.
112
113 // Note: For JDK 1.3 StrictMath exists and Math.sin/cos/sqrt are
114 // java methods. Interpreter::method_kind(...) will select
115 // this entry point for the corresponding methods in JDK 1.3.
116 // get argument
117 __ fld_d(Address(rsp, 1*wordSize));
118 switch (kind) {
119 case Interpreter::java_lang_math_sin :
120 __ trigfunc('s');
121 break;
122 case Interpreter::java_lang_math_cos :
123 __ trigfunc('c');
124 break;
125 case Interpreter::java_lang_math_tan :
126 __ trigfunc('t');
127 break;
128 case Interpreter::java_lang_math_sqrt:
129 __ fsqrt();
130 break;
131 case Interpreter::java_lang_math_abs:
132 __ fabs();
133 break;
134 case Interpreter::java_lang_math_log:
135 __ subptr(rsp, 2 * wordSize);
136 __ fstp_d(Address(rsp, 0));
137 if (VM_Version::supports_sse2()) {
138 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::dlog())));
139 }
140 else {
141 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dlog)));
142 }
143 __ addptr(rsp, 2 * wordSize);
144 break;
145 case Interpreter::java_lang_math_log10:
146 __ flog10();
147 // Store to stack to convert 80bit precision back to 64bits
148 __ push_fTOS();
149 __ pop_fTOS();
150 break;
151 case Interpreter::java_lang_math_pow:
152 __ fld_d(Address(rsp, 3*wordSize)); // second argument
153 __ pow_with_fallback(0);
154 // Store to stack to convert 80bit precision back to 64bits
155 __ push_fTOS();
156 __ pop_fTOS();
157 break;
158 case Interpreter::java_lang_math_exp:
159 __ subptr(rsp, 2*wordSize);
160 __ fstp_d(Address(rsp, 0));
161 if (VM_Version::supports_sse2()) {
162 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::dexp())));
163 } else {
164 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dexp)));
165 }
166 __ addptr(rsp, 2*wordSize);
167 break;
168 default :
169 ShouldNotReachHere();
170 }
171
172 // return double result in xmm0 for interpreter and compilers.
173 if (UseSSE >= 2) {
174 __ subptr(rsp, 2*wordSize);
175 __ fstp_d(Address(rsp, 0));
176 __ movdbl(xmm0, Address(rsp, 0));
177 __ addptr(rsp, 2*wordSize);
178 }
179
180 // done, result in FPU ST(0) or XMM0
181 __ pop(rdi); // get return address
182 __ mov(rsp, rsi); // set sp to sender sp
183 __ jmp(rdi);
184
185 return entry_point;
186 }
187
188
189 void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
190
191 // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
192 // the days we had adapter frames. When we deoptimize a situation where a
193 // compiled caller calls a compiled caller will have registers it expects
194 // to survive the call to the callee. If we deoptimize the callee the only
195 // way we can restore these registers is to have the oldest interpreter
196 // frame that we create restore these values. That is what this routine
197 // will accomplish.
198
199 // At the moment we have modified c2 to not have any callee save registers
200 // so this problem does not exist and this routine is just a place holder.
201
202 assert(f->is_interpreted_frame(), "must be interpreted");
203 }