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/*
* Copyright (c) 2020, 2022, 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.
*/
#ifndef SHARE_PRIMS_FOREIGN_GLOBALS
#define SHARE_PRIMS_FOREIGN_GLOBALS
#include "code/vmreg.hpp"
#include "oops/oopsHierarchy.hpp"
#include "prims/vmstorage.hpp"
#include "runtime/sharedRuntime.hpp"
#include "utilities/growableArray.hpp"
#include "utilities/macros.hpp"
#include CPU_HEADER(foreignGlobals)
// needs to match StubLocations in Java code.
// placeholder locations to be filled in by
// the code gen code
class StubLocations {
public:
enum Location : uint32_t {
TARGET_ADDRESS,
RETURN_BUFFER,
CAPTURED_STATE_BUFFER,
LOCATION_LIMIT
};
private:
VMStorage _locs[LOCATION_LIMIT];
public:
StubLocations();
void set(uint32_t loc, VMStorage storage);
void set_frame_data(uint32_t loc, int offset);
VMStorage get(uint32_t loc) const;
VMStorage get(VMStorage placeholder) const;
int data_offset(uint32_t loc) const;
};
class CallingConventionClosure {
public:
virtual int calling_convention(const BasicType* sig_bt, VMStorage* regs, int num_args) const = 0;
};
struct CallRegs {
GrowableArray<VMStorage> _arg_regs;
GrowableArray<VMStorage> _ret_regs;
CallRegs(int num_args, int num_rets)
: _arg_regs(num_args), _ret_regs(num_rets) {}
};
class ForeignGlobals {
private:
template<typename T>
static void parse_register_array(objArrayOop jarray, StorageType type_index, GrowableArray<T>& array, T (*converter)(int));
public:
static const ABIDescriptor parse_abi_descriptor(jobject jabi);
static const CallRegs parse_call_regs(jobject jconv);
static VMStorage parse_vmstorage(oop storage);
};
class JavaCallingConvention : public CallingConventionClosure {
public:
int calling_convention(const BasicType* sig_bt, VMStorage* regs, int num_args) const override;
};
class NativeCallingConvention : public CallingConventionClosure {
GrowableArray<VMStorage> _input_regs;
public:
NativeCallingConvention(const GrowableArray<VMStorage>& input_regs)
: _input_regs(input_regs) {}
int calling_convention(const BasicType* sig_bt, VMStorage* out_regs, int num_args) const override;
};
class RegSpiller {
GrowableArray<VMStorage> _regs;
int _spill_size_bytes;
public:
RegSpiller(const GrowableArray<VMStorage>& regs) : _regs(regs), _spill_size_bytes(compute_spill_area(regs)) {
}
int spill_size_bytes() const { return _spill_size_bytes; }
void generate_spill(MacroAssembler* masm, int rsp_offset) const { return generate(masm, rsp_offset, true); }
void generate_fill(MacroAssembler* masm, int rsp_offset) const { return generate(masm, rsp_offset, false); }
private:
static int compute_spill_area(const GrowableArray<VMStorage>& regs);
void generate(MacroAssembler* masm, int rsp_offset, bool is_spill) const;
static int pd_reg_size(VMStorage reg);
static void pd_store_reg(MacroAssembler* masm, int offset, VMStorage reg);
static void pd_load_reg(MacroAssembler* masm, int offset, VMStorage reg);
};
struct Move {
VMStorage from;
VMStorage to;
};
class ArgumentShuffle {
private:
GrowableArray<Move> _moves;
int _out_arg_bytes;
public:
ArgumentShuffle(
BasicType* in_sig_bt, int num_in_args,
BasicType* out_sig_bt, int num_out_args,
const CallingConventionClosure* input_conv, const CallingConventionClosure* output_conv,
VMStorage shuffle_temp);
int out_arg_bytes() const { return _out_arg_bytes; }
void generate(MacroAssembler* masm, VMStorage tmp, int in_stk_bias, int out_stk_bias, const StubLocations& locs) const {
pd_generate(masm, tmp, in_stk_bias, out_stk_bias, locs);
}
void print_on(outputStream* os) const;
private:
void pd_generate(MacroAssembler* masm, VMStorage tmp, int in_stk_bias, int out_stk_bias, const StubLocations& locs) const;
};
#endif // SHARE_PRIMS_FOREIGN_GLOBALS
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