jdk8-mips64-public/hotspot: src/cpu/x86/vm/interpreter_x86

src/cpu/x86/vm/interpreter_x86_32.cpp@f90c822e73f8 (annotated)

src/cpu/x86/vm/interpreter_x86_32.cpp

Wed, 27 Apr 2016 01:25:04 +0800

author: aoqi
date: Wed, 27 Apr 2016 01:25:04 +0800
changeset 0: f90c822e73f8
child 6876: 710a3c8b516e
permissions: -rw-r--r--

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

 /*
  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "asm/macroAssembler.hpp"
 #include "interpreter/bytecodeHistogram.hpp"
 #include "interpreter/interpreter.hpp"
 #include "interpreter/interpreterGenerator.hpp"
 #include "interpreter/interpreterRuntime.hpp"
 #include "interpreter/templateTable.hpp"
 #include "oops/arrayOop.hpp"
 #include "oops/methodData.hpp"
 #include "oops/method.hpp"
 #include "oops/oop.inline.hpp"
 #include "prims/jvmtiExport.hpp"
 #include "prims/jvmtiThreadState.hpp"
 #include "prims/methodHandles.hpp"
 #include "runtime/arguments.hpp"
 #include "runtime/deoptimization.hpp"
 #include "runtime/frame.inline.hpp"
 #include "runtime/sharedRuntime.hpp"
 #include "runtime/stubRoutines.hpp"
 #include "runtime/synchronizer.hpp"
 #include "runtime/timer.hpp"
 #include "runtime/vframeArray.hpp"
 #include "utilities/debug.hpp"
 #ifdef COMPILER1
 #include "c1/c1_Runtime1.hpp"
 #endif
 #define __ _masm->
 //------------------------------------------------------------------------------------------------------------------------
 address AbstractInterpreterGenerator::generate_slow_signature_handler() {
   address entry = __ pc();
   // rbx,: method
   // rcx: temporary
   // rdi: pointer to locals
   // rsp: end of copied parameters area
   __ mov(rcx, rsp);
   __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::slow_signature_handler), rbx, rdi, rcx);
   __ ret(0);
   return entry;
 }
 //
 // Various method entries (that c++ and asm interpreter agree upon)
 //------------------------------------------------------------------------------------------------------------------------
 //
 //
 // Empty method, generate a very fast return.
 address InterpreterGenerator::generate_empty_entry(void) {
   // rbx,: Method*
   // rcx: receiver (unused)
   // rsi: previous interpreter state (C++ interpreter) must preserve
   // rsi: sender sp must set sp to this value on return
   if (!UseFastEmptyMethods) return NULL;
   address entry_point = __ pc();
   // If we need a safepoint check, generate full interpreter entry.
   Label slow_path;
   ExternalAddress state(SafepointSynchronize::address_of_state());
   __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
            SafepointSynchronize::_not_synchronized);
   __ jcc(Assembler::notEqual, slow_path);
   // do nothing for empty methods (do not even increment invocation counter)
   // Code: _return
   // _return
   // return w/o popping parameters
   __ pop(rax);
   __ mov(rsp, rsi);
   __ jmp(rax);
   __ bind(slow_path);
   (void) generate_normal_entry(false);
   return entry_point;
 }
 address InterpreterGenerator::generate_math_entry(AbstractInterpreter::MethodKind kind) {
   // rbx,: Method*
   // rcx: scratrch
   // rsi: sender sp
   if (!InlineIntrinsics) return NULL; // Generate a vanilla entry
   address entry_point = __ pc();
   // These don't need a safepoint check because they aren't virtually
   // callable. We won't enter these intrinsics from compiled code.
   // If in the future we added an intrinsic which was virtually callable
   // we'd have to worry about how to safepoint so that this code is used.
   // mathematical functions inlined by compiler
   // (interpreter must provide identical implementation
   // in order to avoid monotonicity bugs when switching
   // from interpreter to compiler in the middle of some
   // computation)
   //
   // stack: [ ret adr ] <-- rsp
   //        [ lo(arg) ]
   //        [ hi(arg) ]
   //
   // Note: For JDK 1.2 StrictMath doesn't exist and Math.sin/cos/sqrt are
   //       native methods. Interpreter::method_kind(...) does a check for
   //       native methods first before checking for intrinsic methods and
   //       thus will never select this entry point. Make sure it is not
   //       called accidentally since the SharedRuntime entry points will
   //       not work for JDK 1.2.
   //
   // We no longer need to check for JDK 1.2 since it's EOL'ed.
   // The following check existed in pre 1.6 implementation,
   //    if (Universe::is_jdk12x_version()) {
   //      __ should_not_reach_here();
   //    }
   // Universe::is_jdk12x_version() always returns false since
   // the JDK version is not yet determined when this method is called.
   // This method is called during interpreter_init() whereas
   // JDK version is only determined when universe2_init() is called.
   // Note: For JDK 1.3 StrictMath exists and Math.sin/cos/sqrt are
   //       java methods.  Interpreter::method_kind(...) will select
   //       this entry point for the corresponding methods in JDK 1.3.
   // get argument
   __ fld_d(Address(rsp, 1*wordSize));
   switch (kind) {
     case Interpreter::java_lang_math_sin :
         __ trigfunc('s');
         break;
     case Interpreter::java_lang_math_cos :
         __ trigfunc('c');
         break;
     case Interpreter::java_lang_math_tan :
         __ trigfunc('t');
         break;
     case Interpreter::java_lang_math_sqrt:
         __ fsqrt();
         break;
     case Interpreter::java_lang_math_abs:
         __ fabs();
         break;
     case Interpreter::java_lang_math_log:
         __ flog();
         // Store to stack to convert 80bit precision back to 64bits
         __ push_fTOS();
         __ pop_fTOS();
         break;
     case Interpreter::java_lang_math_log10:
         __ flog10();
         // Store to stack to convert 80bit precision back to 64bits
         __ push_fTOS();
         __ pop_fTOS();
         break;
     case Interpreter::java_lang_math_pow:
       __ fld_d(Address(rsp, 3*wordSize)); // second argument
       __ pow_with_fallback(0);
       // Store to stack to convert 80bit precision back to 64bits
       __ push_fTOS();
       __ pop_fTOS();
       break;
     case Interpreter::java_lang_math_exp:
       __ exp_with_fallback(0);
       // Store to stack to convert 80bit precision back to 64bits
       __ push_fTOS();
       __ pop_fTOS();
       break;
     default                              :
         ShouldNotReachHere();
   }
   // return double result in xmm0 for interpreter and compilers.
   if (UseSSE >= 2) {
     __ subptr(rsp, 2*wordSize);
     __ fstp_d(Address(rsp, 0));
     __ movdbl(xmm0, Address(rsp, 0));
     __ addptr(rsp, 2*wordSize);
   }
   // done, result in FPU ST(0) or XMM0
   __ pop(rdi);                               // get return address
   __ mov(rsp, rsi);                          // set sp to sender sp
   __ jmp(rdi);
   return entry_point;
 }
 // Abstract method entry
 // Attempt to execute abstract method. Throw exception
 address InterpreterGenerator::generate_abstract_entry(void) {
   // rbx,: Method*
   // rcx: receiver (unused)
   // rsi: previous interpreter state (C++ interpreter) must preserve
   // rsi: sender SP
   address entry_point = __ pc();
   // abstract method entry
   //  pop return address, reset last_sp to NULL
   __ empty_expression_stack();
   __ restore_bcp();      // rsi must be correct for exception handler   (was destroyed)
   __ restore_locals();   // make sure locals pointer is correct as well (was destroyed)
   // throw exception
   __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError));
   // the call_VM checks for exception, so we should never return here.
   __ should_not_reach_here();
   return entry_point;
 }
 void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
   // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
   // the days we had adapter frames. When we deoptimize a situation where a
   // compiled caller calls a compiled caller will have registers it expects
   // to survive the call to the callee. If we deoptimize the callee the only
   // way we can restore these registers is to have the oldest interpreter
   // frame that we create restore these values. That is what this routine
   // will accomplish.
   // At the moment we have modified c2 to not have any callee save registers
   // so this problem does not exist and this routine is just a place holder.
   assert(f->is_interpreted_frame(), "must be interpreted");
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/cpu/x86/vm/interpreter_x86_32.cpp@f90c822e73f8 (annotated)

src/cpu/x86/vm/interpreter_x86_32.cpp