Mercurial > hg > graal-jvmci-8
diff src/cpu/sparc/vm/interpreter_sparc.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 | e5b0439ef4ae |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/sparc/vm/interpreter_sparc.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,420 @@ +/* + * 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_sparc.cpp.incl" + + + +// Generation of Interpreter +// +// The InterpreterGenerator generates the interpreter into Interpreter::_code. + + +#define __ _masm-> + + +//---------------------------------------------------------------------------------------------------- + + + + +int AbstractInterpreter::BasicType_as_index(BasicType type) { + int i = 0; + switch (type) { + case T_BOOLEAN: i = 0; break; + case T_CHAR : i = 1; break; + case T_BYTE : i = 2; break; + case T_SHORT : i = 3; break; + case T_INT : i = 4; break; + case T_LONG : i = 5; break; + case T_VOID : i = 6; break; + case T_FLOAT : i = 7; break; + case T_DOUBLE : i = 8; break; + case T_OBJECT : i = 9; break; + case T_ARRAY : i = 9; break; + default : ShouldNotReachHere(); + } + assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); + return i; +} + + +#ifndef _LP64 +address AbstractInterpreterGenerator::generate_slow_signature_handler() { + address entry = __ pc(); + Argument argv(0, true); + + // We are in the jni transition frame. Save the last_java_frame corresponding to the + // outer interpreter frame + // + __ set_last_Java_frame(FP, noreg); + // make sure the interpreter frame we've pushed has a valid return pc + __ mov(O7, I7); + __ mov(Lmethod, G3_scratch); + __ mov(Llocals, G4_scratch); + __ save_frame(0); + __ mov(G2_thread, L7_thread_cache); + __ add(argv.address_in_frame(), O3); + __ mov(G2_thread, O0); + __ mov(G3_scratch, O1); + __ call(CAST_FROM_FN_PTR(address, InterpreterRuntime::slow_signature_handler), relocInfo::runtime_call_type); + __ delayed()->mov(G4_scratch, O2); + __ mov(L7_thread_cache, G2_thread); + __ reset_last_Java_frame(); + + // load the register arguments (the C code packed them as varargs) + for (Argument ldarg = argv.successor(); ldarg.is_register(); ldarg = ldarg.successor()) { + __ ld_ptr(ldarg.address_in_frame(), ldarg.as_register()); + } + __ ret(); + __ delayed()-> + restore(O0, 0, Lscratch); // caller's Lscratch gets the result handler + return entry; +} + + +#else +// LP64 passes floating point arguments in F1, F3, F5, etc. instead of +// O0, O1, O2 etc.. +// Doubles are passed in D0, D2, D4 +// We store the signature of the first 16 arguments in the first argument +// slot because it will be overwritten prior to calling the native +// function, with the pointer to the JNIEnv. +// If LP64 there can be up to 16 floating point arguments in registers +// or 6 integer registers. +address AbstractInterpreterGenerator::generate_slow_signature_handler() { + + enum { + non_float = 0, + float_sig = 1, + double_sig = 2, + sig_mask = 3 + }; + + address entry = __ pc(); + Argument argv(0, true); + + // We are in the jni transition frame. Save the last_java_frame corresponding to the + // outer interpreter frame + // + __ set_last_Java_frame(FP, noreg); + // make sure the interpreter frame we've pushed has a valid return pc + __ mov(O7, I7); + __ mov(Lmethod, G3_scratch); + __ mov(Llocals, G4_scratch); + __ save_frame(0); + __ mov(G2_thread, L7_thread_cache); + __ add(argv.address_in_frame(), O3); + __ mov(G2_thread, O0); + __ mov(G3_scratch, O1); + __ call(CAST_FROM_FN_PTR(address, InterpreterRuntime::slow_signature_handler), relocInfo::runtime_call_type); + __ delayed()->mov(G4_scratch, O2); + __ mov(L7_thread_cache, G2_thread); + __ reset_last_Java_frame(); + + + // load the register arguments (the C code packed them as varargs) + Address Sig = argv.address_in_frame(); // Argument 0 holds the signature + __ ld_ptr( Sig, G3_scratch ); // Get register argument signature word into G3_scratch + __ mov( G3_scratch, G4_scratch); + __ srl( G4_scratch, 2, G4_scratch); // Skip Arg 0 + Label done; + for (Argument ldarg = argv.successor(); ldarg.is_float_register(); ldarg = ldarg.successor()) { + Label NonFloatArg; + Label LoadFloatArg; + Label LoadDoubleArg; + Label NextArg; + Address a = ldarg.address_in_frame(); + __ andcc(G4_scratch, sig_mask, G3_scratch); + __ br(Assembler::zero, false, Assembler::pt, NonFloatArg); + __ delayed()->nop(); + + __ cmp(G3_scratch, float_sig ); + __ br(Assembler::equal, false, Assembler::pt, LoadFloatArg); + __ delayed()->nop(); + + __ cmp(G3_scratch, double_sig ); + __ br(Assembler::equal, false, Assembler::pt, LoadDoubleArg); + __ delayed()->nop(); + + __ bind(NonFloatArg); + // There are only 6 integer register arguments! + if ( ldarg.is_register() ) + __ ld_ptr(ldarg.address_in_frame(), ldarg.as_register()); + else { + // Optimization, see if there are any more args and get out prior to checking + // all 16 float registers. My guess is that this is rare. + // If is_register is false, then we are done the first six integer args. + __ tst(G4_scratch); + __ brx(Assembler::zero, false, Assembler::pt, done); + __ delayed()->nop(); + + } + __ ba(false, NextArg); + __ delayed()->srl( G4_scratch, 2, G4_scratch ); + + __ bind(LoadFloatArg); + __ ldf( FloatRegisterImpl::S, a, ldarg.as_float_register(), 4); + __ ba(false, NextArg); + __ delayed()->srl( G4_scratch, 2, G4_scratch ); + + __ bind(LoadDoubleArg); + __ ldf( FloatRegisterImpl::D, a, ldarg.as_double_register() ); + __ ba(false, NextArg); + __ delayed()->srl( G4_scratch, 2, G4_scratch ); + + __ bind(NextArg); + + } + + __ bind(done); + __ ret(); + __ delayed()-> + restore(O0, 0, Lscratch); // caller's Lscratch gets the result handler + return entry; +} +#endif + +void InterpreterGenerator::generate_counter_overflow(Label& Lcontinue) { + + // Generate code to initiate compilation on the counter overflow. + + // InterpreterRuntime::frequency_counter_overflow takes two arguments, + // the first indicates if the counter overflow occurs at a backwards branch (NULL bcp) + // and the second is only used when the first is true. We pass zero for both. + // The call returns the address of the verified entry point for the method or NULL + // if the compilation did not complete (either went background or bailed out). + __ set((int)false, O2); + __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), O2, O2, true); + // returns verified_entry_point or NULL + // we ignore it in any case + __ ba(false, Lcontinue); + __ delayed()->nop(); + +} + + +// End of helpers + +// Various method entries + +// Abstract method entry +// Attempt to execute abstract method. Throw exception +// +address InterpreterGenerator::generate_abstract_entry(void) { + address entry = __ pc(); + // abstract method entry + // 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; + +} + + +//---------------------------------------------------------------------------------------------------- +// Entry points & stack frame layout +// +// Here we generate the various kind of entries into the interpreter. +// The two main entry type are generic bytecode methods and native call method. +// These both come in synchronized and non-synchronized versions but the +// frame layout they create is very similar. The other method entry +// types are really just special purpose entries that are really entry +// and interpretation all in one. These are for trivial methods like +// accessor, empty, or special math methods. +// +// When control flow reaches any of the entry types for the interpreter +// the following holds -> +// +// C2 Calling Conventions: +// +// The entry code below assumes that the following registers are set +// when coming in: +// G5_method: holds the methodOop of the method to call +// Lesp: points to the TOS of the callers expression stack +// after having pushed all the parameters +// +// The entry code does the following to setup an interpreter frame +// pop parameters from the callers stack by adjusting Lesp +// set O0 to Lesp +// compute X = (max_locals - num_parameters) +// bump SP up by X to accomadate the extra locals +// compute X = max_expression_stack +// + vm_local_words +// + 16 words of register save area +// save frame doing a save sp, -X, sp growing towards lower addresses +// set Lbcp, Lmethod, LcpoolCache +// set Llocals to i0 +// set Lmonitors to FP - rounded_vm_local_words +// set Lesp to Lmonitors - 4 +// +// The frame has now been setup to do the rest of the entry code + +// Try this optimization: Most method entries could live in a +// "one size fits all" stack frame without all the dynamic size +// calculations. It might be profitable to do all this calculation +// statically and approximately for "small enough" methods. + +//----------------------------------------------------------------------------------------------- + +// C1 Calling conventions +// +// Upon method entry, the following registers are setup: +// +// g2 G2_thread: current thread +// g5 G5_method: method to activate +// g4 Gargs : pointer to last argument +// +// +// Stack: +// +// +---------------+ <--- sp +// | | +// : reg save area : +// | | +// +---------------+ <--- sp + 0x40 +// | | +// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later) +// | | +// +---------------+ <--- sp + 0x5c +// | | +// : free : +// | | +// +---------------+ <--- Gargs +// | | +// : arguments : +// | | +// +---------------+ +// | | +// +// +// +// AFTER FRAME HAS BEEN SETUP for method interpretation the stack looks like: +// +// +---------------+ <--- sp +// | | +// : reg save area : +// | | +// +---------------+ <--- sp + 0x40 +// | | +// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later) +// | | +// +---------------+ <--- sp + 0x5c +// | | +// : : +// | | <--- Lesp +// +---------------+ <--- Lmonitors (fp - 0x18) +// | VM locals | +// +---------------+ <--- fp +// | | +// : reg save area : +// | | +// +---------------+ <--- fp + 0x40 +// | | +// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later) +// | | +// +---------------+ <--- fp + 0x5c +// | | +// : free : +// | | +// +---------------+ +// | | +// : nonarg locals : +// | | +// +---------------+ +// | | +// : arguments : +// | | <--- Llocals +// +---------------+ <--- Gargs +// | | + +address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) { + // determine code generation flags + bool synchronized = false; + address entry_point = NULL; + + switch (kind) { + case Interpreter::zerolocals : break; + case Interpreter::zerolocals_synchronized: synchronized = true; break; + case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; + case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; + case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; + case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; + case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; + case Interpreter::java_lang_math_sin : break; + case Interpreter::java_lang_math_cos : break; + case Interpreter::java_lang_math_tan : break; + case Interpreter::java_lang_math_sqrt : break; + case Interpreter::java_lang_math_abs : break; + case Interpreter::java_lang_math_log : break; + case Interpreter::java_lang_math_log10 : break; + default : ShouldNotReachHere(); break; + } + + if (entry_point) return entry_point; + + return ((InterpreterGenerator*)this)->generate_normal_entry(synchronized); +} + + +// 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"); +} + + +//---------------------------------------------------------------------------------------------------- +// Exceptions