1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/x86/vm/interpreter_x86_32.cpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,260 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#include "precompiled.hpp"
1.29 +#include "asm/macroAssembler.hpp"
1.30 +#include "interpreter/bytecodeHistogram.hpp"
1.31 +#include "interpreter/interpreter.hpp"
1.32 +#include "interpreter/interpreterGenerator.hpp"
1.33 +#include "interpreter/interpreterRuntime.hpp"
1.34 +#include "interpreter/templateTable.hpp"
1.35 +#include "oops/arrayOop.hpp"
1.36 +#include "oops/methodData.hpp"
1.37 +#include "oops/method.hpp"
1.38 +#include "oops/oop.inline.hpp"
1.39 +#include "prims/jvmtiExport.hpp"
1.40 +#include "prims/jvmtiThreadState.hpp"
1.41 +#include "prims/methodHandles.hpp"
1.42 +#include "runtime/arguments.hpp"
1.43 +#include "runtime/deoptimization.hpp"
1.44 +#include "runtime/frame.inline.hpp"
1.45 +#include "runtime/sharedRuntime.hpp"
1.46 +#include "runtime/stubRoutines.hpp"
1.47 +#include "runtime/synchronizer.hpp"
1.48 +#include "runtime/timer.hpp"
1.49 +#include "runtime/vframeArray.hpp"
1.50 +#include "utilities/debug.hpp"
1.51 +#ifdef COMPILER1
1.52 +#include "c1/c1_Runtime1.hpp"
1.53 +#endif
1.54 +
1.55 +#define __ _masm->
1.56 +
1.57 +//------------------------------------------------------------------------------------------------------------------------
1.58 +
1.59 +address AbstractInterpreterGenerator::generate_slow_signature_handler() {
1.60 + address entry = __ pc();
1.61 + // rbx,: method
1.62 + // rcx: temporary
1.63 + // rdi: pointer to locals
1.64 + // rsp: end of copied parameters area
1.65 + __ mov(rcx, rsp);
1.66 + __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::slow_signature_handler), rbx, rdi, rcx);
1.67 + __ ret(0);
1.68 + return entry;
1.69 +}
1.70 +
1.71 +
1.72 +//
1.73 +// Various method entries (that c++ and asm interpreter agree upon)
1.74 +//------------------------------------------------------------------------------------------------------------------------
1.75 +//
1.76 +//
1.77 +
1.78 +// Empty method, generate a very fast return.
1.79 +
1.80 +address InterpreterGenerator::generate_empty_entry(void) {
1.81 +
1.82 + // rbx,: Method*
1.83 + // rcx: receiver (unused)
1.84 + // rsi: previous interpreter state (C++ interpreter) must preserve
1.85 + // rsi: sender sp must set sp to this value on return
1.86 +
1.87 + if (!UseFastEmptyMethods) return NULL;
1.88 +
1.89 + address entry_point = __ pc();
1.90 +
1.91 + // If we need a safepoint check, generate full interpreter entry.
1.92 + Label slow_path;
1.93 + ExternalAddress state(SafepointSynchronize::address_of_state());
1.94 + __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
1.95 + SafepointSynchronize::_not_synchronized);
1.96 + __ jcc(Assembler::notEqual, slow_path);
1.97 +
1.98 + // do nothing for empty methods (do not even increment invocation counter)
1.99 + // Code: _return
1.100 + // _return
1.101 + // return w/o popping parameters
1.102 + __ pop(rax);
1.103 + __ mov(rsp, rsi);
1.104 + __ jmp(rax);
1.105 +
1.106 + __ bind(slow_path);
1.107 + (void) generate_normal_entry(false);
1.108 + return entry_point;
1.109 +}
1.110 +
1.111 +address InterpreterGenerator::generate_math_entry(AbstractInterpreter::MethodKind kind) {
1.112 +
1.113 + // rbx,: Method*
1.114 + // rcx: scratrch
1.115 + // rsi: sender sp
1.116 +
1.117 + if (!InlineIntrinsics) return NULL; // Generate a vanilla entry
1.118 +
1.119 + address entry_point = __ pc();
1.120 +
1.121 + // These don't need a safepoint check because they aren't virtually
1.122 + // callable. We won't enter these intrinsics from compiled code.
1.123 + // If in the future we added an intrinsic which was virtually callable
1.124 + // we'd have to worry about how to safepoint so that this code is used.
1.125 +
1.126 + // mathematical functions inlined by compiler
1.127 + // (interpreter must provide identical implementation
1.128 + // in order to avoid monotonicity bugs when switching
1.129 + // from interpreter to compiler in the middle of some
1.130 + // computation)
1.131 + //
1.132 + // stack: [ ret adr ] <-- rsp
1.133 + // [ lo(arg) ]
1.134 + // [ hi(arg) ]
1.135 + //
1.136 +
1.137 + // Note: For JDK 1.2 StrictMath doesn't exist and Math.sin/cos/sqrt are
1.138 + // native methods. Interpreter::method_kind(...) does a check for
1.139 + // native methods first before checking for intrinsic methods and
1.140 + // thus will never select this entry point. Make sure it is not
1.141 + // called accidentally since the SharedRuntime entry points will
1.142 + // not work for JDK 1.2.
1.143 + //
1.144 + // We no longer need to check for JDK 1.2 since it's EOL'ed.
1.145 + // The following check existed in pre 1.6 implementation,
1.146 + // if (Universe::is_jdk12x_version()) {
1.147 + // __ should_not_reach_here();
1.148 + // }
1.149 + // Universe::is_jdk12x_version() always returns false since
1.150 + // the JDK version is not yet determined when this method is called.
1.151 + // This method is called during interpreter_init() whereas
1.152 + // JDK version is only determined when universe2_init() is called.
1.153 +
1.154 + // Note: For JDK 1.3 StrictMath exists and Math.sin/cos/sqrt are
1.155 + // java methods. Interpreter::method_kind(...) will select
1.156 + // this entry point for the corresponding methods in JDK 1.3.
1.157 + // get argument
1.158 + __ fld_d(Address(rsp, 1*wordSize));
1.159 + switch (kind) {
1.160 + case Interpreter::java_lang_math_sin :
1.161 + __ trigfunc('s');
1.162 + break;
1.163 + case Interpreter::java_lang_math_cos :
1.164 + __ trigfunc('c');
1.165 + break;
1.166 + case Interpreter::java_lang_math_tan :
1.167 + __ trigfunc('t');
1.168 + break;
1.169 + case Interpreter::java_lang_math_sqrt:
1.170 + __ fsqrt();
1.171 + break;
1.172 + case Interpreter::java_lang_math_abs:
1.173 + __ fabs();
1.174 + break;
1.175 + case Interpreter::java_lang_math_log:
1.176 + __ flog();
1.177 + // Store to stack to convert 80bit precision back to 64bits
1.178 + __ push_fTOS();
1.179 + __ pop_fTOS();
1.180 + break;
1.181 + case Interpreter::java_lang_math_log10:
1.182 + __ flog10();
1.183 + // Store to stack to convert 80bit precision back to 64bits
1.184 + __ push_fTOS();
1.185 + __ pop_fTOS();
1.186 + break;
1.187 + case Interpreter::java_lang_math_pow:
1.188 + __ fld_d(Address(rsp, 3*wordSize)); // second argument
1.189 + __ pow_with_fallback(0);
1.190 + // Store to stack to convert 80bit precision back to 64bits
1.191 + __ push_fTOS();
1.192 + __ pop_fTOS();
1.193 + break;
1.194 + case Interpreter::java_lang_math_exp:
1.195 + __ exp_with_fallback(0);
1.196 + // Store to stack to convert 80bit precision back to 64bits
1.197 + __ push_fTOS();
1.198 + __ pop_fTOS();
1.199 + break;
1.200 + default :
1.201 + ShouldNotReachHere();
1.202 + }
1.203 +
1.204 + // return double result in xmm0 for interpreter and compilers.
1.205 + if (UseSSE >= 2) {
1.206 + __ subptr(rsp, 2*wordSize);
1.207 + __ fstp_d(Address(rsp, 0));
1.208 + __ movdbl(xmm0, Address(rsp, 0));
1.209 + __ addptr(rsp, 2*wordSize);
1.210 + }
1.211 +
1.212 + // done, result in FPU ST(0) or XMM0
1.213 + __ pop(rdi); // get return address
1.214 + __ mov(rsp, rsi); // set sp to sender sp
1.215 + __ jmp(rdi);
1.216 +
1.217 + return entry_point;
1.218 +}
1.219 +
1.220 +
1.221 +// Abstract method entry
1.222 +// Attempt to execute abstract method. Throw exception
1.223 +address InterpreterGenerator::generate_abstract_entry(void) {
1.224 +
1.225 + // rbx,: Method*
1.226 + // rcx: receiver (unused)
1.227 + // rsi: previous interpreter state (C++ interpreter) must preserve
1.228 +
1.229 + // rsi: sender SP
1.230 +
1.231 + address entry_point = __ pc();
1.232 +
1.233 + // abstract method entry
1.234 +
1.235 + // pop return address, reset last_sp to NULL
1.236 + __ empty_expression_stack();
1.237 + __ restore_bcp(); // rsi must be correct for exception handler (was destroyed)
1.238 + __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
1.239 +
1.240 + // throw exception
1.241 + __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError));
1.242 + // the call_VM checks for exception, so we should never return here.
1.243 + __ should_not_reach_here();
1.244 +
1.245 + return entry_point;
1.246 +}
1.247 +
1.248 +
1.249 +void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
1.250 +
1.251 + // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
1.252 + // the days we had adapter frames. When we deoptimize a situation where a
1.253 + // compiled caller calls a compiled caller will have registers it expects
1.254 + // to survive the call to the callee. If we deoptimize the callee the only
1.255 + // way we can restore these registers is to have the oldest interpreter
1.256 + // frame that we create restore these values. That is what this routine
1.257 + // will accomplish.
1.258 +
1.259 + // At the moment we have modified c2 to not have any callee save registers
1.260 + // so this problem does not exist and this routine is just a place holder.
1.261 +
1.262 + assert(f->is_interpreted_frame(), "must be interpreted");
1.263 +}
