Quelle foreignGlobals.hpp Sprache: C

/*
* 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

quality100%

¤ Dauer der Verarbeitung: 0.13 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.