Mercurial > hg > graal-compiler
diff src/cpu/x86/vm/interpreter_x86_32.cpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | dc7f315e41f7 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/x86/vm/interpreter_x86_32.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,250 @@ +/* + * 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"); +}