| /* |
| * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| #include "incls/_precompiled.incl" |
| #include "incls/_interpreter_x86_32.cpp.incl" |
| |
| #define __ _masm-> |
| |
| // Initialize the sentinel used to distinguish an interpreter return address. |
| const int Interpreter::return_sentinel = 0xfeedbeed; |
| |
| //------------------------------------------------------------------------------------------------------------------------ |
| |
| address AbstractInterpreterGenerator::generate_slow_signature_handler() { |
| address entry = __ pc(); |
| // rbx,: method |
| // rcx: temporary |
| // rdi: pointer to locals |
| // rsp: end of copied parameters area |
| __ movl(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,: methodOop |
| // 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 |
| __ popl(rax); |
| __ movl(rsp, rsi); |
| __ jmp(rax); |
| |
| __ bind(slow_path); |
| (void) generate_normal_entry(false); |
| return entry_point; |
| } |
| |
| address InterpreterGenerator::generate_math_entry(AbstractInterpreter::MethodKind kind) { |
| |
| // rbx,: methodOop |
| // 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 |
| if (TaggedStackInterpreter) { |
| __ pushl(Address(rsp, 3*wordSize)); // push hi (and note rsp -= wordSize) |
| __ pushl(Address(rsp, 2*wordSize)); // push lo |
| __ fld_d(Address(rsp, 0)); // get double in ST0 |
| __ addl(rsp, 2*wordSize); |
| } else { |
| __ 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; |
| default : |
| ShouldNotReachHere(); |
| } |
| |
| // return double result in xmm0 for interpreter and compilers. |
| if (UseSSE >= 2) { |
| __ subl(rsp, 2*wordSize); |
| __ fstp_d(Address(rsp, 0)); |
| __ movdbl(xmm0, Address(rsp, 0)); |
| __ addl(rsp, 2*wordSize); |
| } |
| |
| // done, result in FPU ST(0) or XMM0 |
| __ popl(rdi); // get return address |
| __ movl(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,: methodOop |
| // rcx: receiver (unused) |
| // rsi: previous interpreter state (C++ interpreter) must preserve |
| |
| // rsi: sender SP |
| |
| address entry_point = __ pc(); |
| |
| // abstract method entry |
| // remove return address. Not really needed, since exception handling throws away expression stack |
| __ popl(rbx); |
| |
| // adjust stack to what a normal return would do |
| __ movl(rsp, rsi); |
| // 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; |
| } |
| |
| // This method tells the deoptimizer how big an interpreted frame must be: |
| int AbstractInterpreter::size_activation(methodOop method, |
| int tempcount, |
| int popframe_extra_args, |
| int moncount, |
| int callee_param_count, |
| int callee_locals, |
| bool is_top_frame) { |
| return layout_activation(method, |
| tempcount, |
| popframe_extra_args, |
| moncount, |
| callee_param_count, |
| callee_locals, |
| (frame*) NULL, |
| (frame*) NULL, |
| is_top_frame); |
| } |
| |
| 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"); |
| } |
