/*
* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2016, 2017, SAP SE. 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
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* 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.
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#ifndef CPU_S390_STUBROUTINES_S390_HPP
#define CPU_S390_STUBROUTINES_S390_HPP
// This file holds the platform specific parts of the StubRoutines
// definition. See stubRoutines.hpp for a description on how to extend it.
static bool returns_to_call_stub(address return_pc) { return return_pc == _call_stub_return_address; }
enum { // Platform dependent constants.
// TODO: May be able to shrink this a lot
code_size1 = 20000, // Simply increase if too small (assembler will crash if too small).
code_size2 = 20000 // Simply increase if too small (assembler will crash if too small).
};
// MethodHandles adapters
enum method_handles_platform_dependent_constants {
method_handles_adapters_code_size = 5000
};
#define CRC32_COLUMN_SIZE 256
#define CRC32_BYFOUR
#ifdef CRC32_BYFOUR
#define CRC32_TABLES 8
#else
#define CRC32_TABLES 1
#endif
// Comapct string intrinsics: Translate table for string inflate intrinsic. Used by trot instruction.
#define TROT_ALIGNMENT 8 // Required by instruction,
// guaranteed by jlong table element type.
#define TROT_COLUMN_SIZE (256*sizeof(jchar)/sizeof(jlong))
class zarch {
friend class StubGenerator;
public:
enum { nof_instance_allocators = 10 };
// allocator lock values
enum {
unlocked = 0,
locked = 1
};
private:
static int _atomic_memory_operation_lock;
static address _partial_subtype_check;
static juint _crc_table[CRC32_TABLES][CRC32_COLUMN_SIZE];
static juint _crc32c_table[CRC32_TABLES][CRC32_COLUMN_SIZE];
// Comapct string intrinsics: Translate table for string inflate intrinsic. Used by trot instruction.
static address _trot_table_addr;
static jlong _trot_table[TROT_COLUMN_SIZE];
public:
// Global lock for everyone who needs to use atomic_compare_and_exchange
// or atomic_increment -- should probably use more locks for more
// scalability -- for instance one for each eden space or group of.
// Address of the lock for atomic_compare_and_exchange.
static int* atomic_memory_operation_lock_addr() { return &_atomic_memory_operation_lock; }
// Accessor and mutator for _atomic_memory_operation_lock.
static int atomic_memory_operation_lock() { return _atomic_memory_operation_lock; }
static void set_atomic_memory_operation_lock(int value) { _atomic_memory_operation_lock = value; }
static address partial_subtype_check() { return _partial_subtype_check; }
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