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/*
* Copyright (c) 2013, Red Hat Inc.
* Copyright (c) 2003, 2010, 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/interpreter.hpp"
#include "interpreter/interpreterRuntime.hpp"
#include "memory/allocation.inline.hpp"
#include "memory/universe.inline.hpp"
#include "oops/method.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/icache.hpp"
#include "runtime/interfaceSupport.hpp"
#include "runtime/signature.hpp"
#define __ _masm->
// Implementation of SignatureHandlerGenerator
Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rlocals; }
Register InterpreterRuntime::SignatureHandlerGenerator::to() { return sp; }
Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rscratch1; }
void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
switch (_num_int_args) {
case 0:
__ ldr(c_rarg1, src);
_num_int_args++;
break;
case 1:
__ ldr(c_rarg2, src);
_num_int_args++;
break;
case 2:
__ ldr(c_rarg3, src);
_num_int_args++;
break;
case 3:
__ ldr(c_rarg4, src);
_num_int_args++;
break;
case 4:
__ ldr(c_rarg5, src);
_num_int_args++;
break;
case 5:
__ ldr(c_rarg6, src);
_num_int_args++;
break;
case 6:
__ ldr(c_rarg7, src);
_num_int_args++;
break;
default:
__ ldr(r0, src);
__ str(r0, Address(to(), _stack_offset));
_stack_offset += wordSize;
_num_int_args++;
break;
}
}
void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1));
switch (_num_int_args) {
case 0:
__ ldr(c_rarg1, src);
_num_int_args++;
break;
case 1:
__ ldr(c_rarg2, src);
_num_int_args++;
break;
case 2:
__ ldr(c_rarg3, src);
_num_int_args++;
break;
case 3:
__ ldr(c_rarg4, src);
_num_int_args++;
break;
case 4:
__ ldr(c_rarg5, src);
_num_int_args++;
break;
case 5:
__ ldr(c_rarg6, src);
_num_int_args++;
break;
case 6:
__ ldr(c_rarg7, src);
_num_int_args++;
break;
default:
__ ldr(r0, src);
__ str(r0, Address(to(), _stack_offset));
_stack_offset += wordSize;
_num_int_args++;
break;
}
}
void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
if (_num_fp_args < Argument::n_float_register_parameters_c) {
__ ldrs(as_FloatRegister(_num_fp_args++), src);
} else {
__ ldrh(r0, src);
__ strh(r0, Address(to(), _stack_offset));
_stack_offset += wordSize;
_num_fp_args++;
}
}
void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1));
if (_num_fp_args < Argument::n_float_register_parameters_c) {
__ ldrd(as_FloatRegister(_num_fp_args++), src);
} else {
__ ldr(r0, src);
__ str(r0, Address(to(), _stack_offset));
_stack_offset += wordSize;
_num_fp_args++;
}
}
void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
switch (_num_int_args) {
case 0:
assert(offset() == 0, "argument register 1 can only be (non-null) receiver");
__ add(c_rarg1, from(), Interpreter::local_offset_in_bytes(offset()));
_num_int_args++;
break;
case 1:
{
__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
__ mov(c_rarg2, 0);
__ ldr(temp(), r0);
Label L;
__ cbz(temp(), L);
__ mov(c_rarg2, r0);
__ bind(L);
_num_int_args++;
break;
}
case 2:
{
__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
__ mov(c_rarg3, 0);
__ ldr(temp(), r0);
Label L;
__ cbz(temp(), L);
__ mov(c_rarg3, r0);
__ bind(L);
_num_int_args++;
break;
}
case 3:
{
__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
__ mov(c_rarg4, 0);
__ ldr(temp(), r0);
Label L;
__ cbz(temp(), L);
__ mov(c_rarg4, r0);
__ bind(L);
_num_int_args++;
break;
}
case 4:
{
__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
__ mov(c_rarg5, 0);
__ ldr(temp(), r0);
Label L;
__ cbz(temp(), L);
__ mov(c_rarg5, r0);
__ bind(L);
_num_int_args++;
break;
}
case 5:
{
__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
__ mov(c_rarg6, 0);
__ ldr(temp(), r0);
Label L;
__ cbz(temp(), L);
__ mov(c_rarg6, r0);
__ bind(L);
_num_int_args++;
break;
}
case 6:
{
__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
__ mov(c_rarg7, 0);
__ ldr(temp(), r0);
Label L;
__ cbz(temp(), L);
__ mov(c_rarg7, r0);
__ bind(L);
_num_int_args++;
break;
}
default:
{
__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
__ ldr(temp(), r0);
Label L;
__ cbnz(temp(), L);
__ mov(r0, zr);
__ bind(L);
__ str(r0, Address(to(), _stack_offset));
_stack_offset += wordSize;
_num_int_args++;
break;
}
}
}
void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
// generate code to handle arguments
iterate(fingerprint);
// set the call format
// n.b. allow extra 1 for the JNI_Env in c_rarg0
unsigned int call_format = ((_num_int_args + 1) << 6) | (_num_fp_args << 2);
switch (method()->result_type()) {
case T_VOID:
call_format |= MacroAssembler::ret_type_void;
break;
case T_FLOAT:
call_format |= MacroAssembler::ret_type_float;
break;
case T_DOUBLE:
call_format |= MacroAssembler::ret_type_double;
break;
default:
call_format |= MacroAssembler::ret_type_integral;
break;
}
// store the call format in the method
__ movw(r0, call_format);
__ str(r0, Address(rmethod, Method::call_format_offset()));
// return result handler
__ lea(r0, ExternalAddress(Interpreter::result_handler(method()->result_type())));
__ ret(lr);
__ flush();
}
// Implementation of SignatureHandlerLibrary
void SignatureHandlerLibrary::pd_set_handler(address handler) {}
class SlowSignatureHandler
: public NativeSignatureIterator {
private:
address _from;
intptr_t* _to;
intptr_t* _int_args;
intptr_t* _fp_args;
intptr_t* _fp_identifiers;
unsigned int _num_int_args;
unsigned int _num_fp_args;
virtual void pass_int()
{
jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
_from -= Interpreter::stackElementSize;
if (_num_int_args < Argument::n_int_register_parameters_c-1) {
*_int_args++ = from_obj;
_num_int_args++;
} else {
*_to++ = from_obj;
_num_int_args++;
}
}
virtual void pass_long()
{
intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
_from -= 2*Interpreter::stackElementSize;
if (_num_int_args < Argument::n_int_register_parameters_c-1) {
*_int_args++ = from_obj;
_num_int_args++;
} else {
*_to++ = from_obj;
_num_int_args++;
}
}
virtual void pass_object()
{
intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
_from -= Interpreter::stackElementSize;
if (_num_int_args < Argument::n_int_register_parameters_c-1) {
*_int_args++ = (*from_addr == 0) ? NULL : (intptr_t)from_addr;
_num_int_args++;
} else {
*_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
_num_int_args++;
}
}
virtual void pass_float()
{
jint from_obj = *(jint*)(_from+Interpreter::local_offset_in_bytes(0));
_from -= Interpreter::stackElementSize;
if (_num_fp_args < Argument::n_float_register_parameters_c) {
*_fp_args++ = from_obj;
_num_fp_args++;
} else {
*_to++ = from_obj;
_num_int_args++;
}
}
virtual void pass_double()
{
intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
_from -= 2*Interpreter::stackElementSize;
if (_num_fp_args < Argument::n_float_register_parameters_c) {
*_fp_args++ = from_obj;
*_fp_identifiers |= (1 << _num_fp_args); // mark as double
_num_fp_args++;
} else {
*_to++ = from_obj;
_num_int_args++;
}
}
public:
SlowSignatureHandler(methodHandle method, address from, intptr_t* to)
: NativeSignatureIterator(method)
{
_from = from;
_to = to;
_int_args = to - (method->is_static() ? 16 : 17);
_fp_args = to - 8;
_fp_identifiers = to - 9;
*(int*) _fp_identifiers = 0;
_num_int_args = (method->is_static() ? 1 : 0);
_num_fp_args = 0;
}
// n.b. allow extra 1 for the JNI_Env in c_rarg0
unsigned int get_call_format()
{
unsigned int call_format = ((_num_int_args + 1) << 6) | (_num_fp_args << 2);
switch (method()->result_type()) {
case T_VOID:
call_format |= MacroAssembler::ret_type_void;
break;
case T_FLOAT:
call_format |= MacroAssembler::ret_type_float;
break;
case T_DOUBLE:
call_format |= MacroAssembler::ret_type_double;
break;
default:
call_format |= MacroAssembler::ret_type_integral;
break;
}
return call_format;
}
};
IRT_ENTRY(address,
InterpreterRuntime::slow_signature_handler(JavaThread* thread,
Method* method,
intptr_t* from,
intptr_t* to))
methodHandle m(thread, (Method*)method);
assert(m->is_native(), "sanity check");
// handle arguments
SlowSignatureHandler ssh(m, (address)from, to);
ssh.iterate(UCONST64(-1));
// set the call format
method->set_call_format(ssh.get_call_format());
// return result handler
return Interpreter::result_handler(m->result_type());
IRT_END
|
