/*
* Copyright ( c ) 1998 , 2021 , 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 "interpreter/interp_masm.hpp"
#include "interpreter/interpreter.hpp"
#include "interpreter/interpreterRuntime.hpp"
#include "memory/allocation.inline.hpp"
#include "oops/method.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/icache.hpp"
#include "" /interfaceSupport.hpp"
#include "runtime/signature.hpp"
#define __ _masm->
// Implementation of SignatureHandlerGenerator
InterpreterRuntime::SignatureHandlerGenerator::SignatureHandlerGenerator(const methodHandle& method, CodeBuffer* buffer) :
NativeSignatureIterator(method) {
_masm = new MacroAssembler(buffer);
#ifdef AMD64
#ifdef _WIN64
_num_args = (method->is_static() ? 1 : 0 );
_stack_offset = (Argument::n_int_register_parameters_c+1 )* wordSize; // don't overwrite return address
#else
_num_int_args = (method->is_static() ? 1 : 0 );
_num_fp_args = 0 ;
_stack_offset = wordSize; // don't overwrite return address
#endif // _WIN64
#endif // AMD64
}
void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
move(offset(), jni_offset() + 1 );
}
void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
move(offset(), jni_offset() + 1 );
}
void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
move(offset(), jni_offset() + 2 );
move(offset() + 1 , jni_offset() + 1 );
}
void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
box (offset(), jni_offset() + 1 );
}
void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) {
__ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
__ movl(Address(to(), to_offset * wordSize), temp());
}
void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) {
__ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
__ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), NULL_WORD); // do not use temp() to avoid AGI
Label L;
__ jcc(Assembler::notZero, L);
__ movptr(temp(), NULL_WORD);
__ bind(L);
__ movptr(Address(to(), to_offset * wordSize), temp());
}
void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) {
// generate code to handle arguments
iterate(fingerprint);
// return result handler
__ lea(rax,
ExternalAddress((address)Interpreter::result_handler(method()->result_type())));
// return
__ ret(0 );
__ flush();
}
Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rdi; }
Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; }
Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rcx; }
// Implementation of SignatureHandlerLibrary
void SignatureHandlerLibrary::pd_set_handler(address handler) {}
class SlowSignatureHandler: public NativeSignatureIterator {
private :
address _from;
intptr_t* _to;
virtual void pass_int() {
*_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0 ));
_from -= Interpreter::stackElementSize;
}
virtual void pass_float() {
*_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0 ));
_from -= Interpreter::stackElementSize;
}
virtual void pass_long() {
_to[0 ] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1 ));
_to[1 ] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0 ));
_to += 2 ;
_from -= 2 *Interpreter::stackElementSize;
}
virtual void pass_object() {
// pass address of from
intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0 ));
*_to++ = (*(intptr_t*)from_addr == 0 ) ? NULL_WORD : from_addr;
_from -= Interpreter::stackElementSize;
}
public :
SlowSignatureHandler(const methodHandle& method, address from, java.lang.StringIndexOutOfBoundsException: Range [65, 54) out of bounds for length 54
NativeSignatureIterator(method) {
_from = from;
_to = to + (is_static() ? 2 : 1 );
}
};
JRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* current, Method* method, intptr_t* from, intptr_t* to))
methodHandle m(current, (Method*)method);
assert(m->is_native(), "sanity check" );
// handle arguments
SlowSignatureHandler(m, (address)from, to + 1 ).iterate((uint64_t)CONST64(-1 ));
// return result handler
return Interpreter::result_handler(m->result_type());
JRT_END
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