1 /*
 2  * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright (c) 2019, Arm Limited. All rights reserved.
 4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 5  *
 6  * This code is free software; you can redistribute it and/or modify it
 7  * under the terms of the GNU General Public License version 2 only, as
 8  * published by the Free Software Foundation.
 9  *
10  * This code is distributed in the hope that it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13  * version 2 for more details (a copy is included in the LICENSE file that
14  * accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License version
17  * 2 along with this work; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19  *
20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21  * or visit www.oracle.com if you need additional information or have any
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23  */
24 
25 #ifndef CPU_AARCH64_VM_FOREIGN_GLOBALS_AARCH64_HPP
26 #define CPU_AARCH64_VM_FOREIGN_GLOBALS_AARCH64_HPP
27 
28 #include "asm/macroAssembler.hpp"
29 #include "utilities/growableArray.hpp"
30 
31 constexpr size_t float_reg_size = 16; // bytes
32 
33 struct ABIDescriptor {
34   GrowableArray<Register> _integer_argument_registers;
35   GrowableArray<Register> _integer_return_registers;
36   GrowableArray<FloatRegister> _vector_argument_registers;
37   GrowableArray<FloatRegister> _vector_return_registers;
38 
39   GrowableArray<Register> _integer_additional_volatile_registers;
40   GrowableArray<FloatRegister> _vector_additional_volatile_registers;
41 
42   int32_t _stack_alignment_bytes;
43   int32_t _shadow_space_bytes;
44 
45   bool is_volatile_reg(Register reg) const;
46   bool is_volatile_reg(FloatRegister reg) const;
47 };
48 
49 struct BufferLayout {
50   size_t stack_args_bytes;
51   size_t stack_args;
52   size_t arguments_vector;
53   size_t arguments_integer;
54   size_t arguments_next_pc;
55   size_t returns_vector;
56   size_t returns_integer;
57   size_t buffer_size;
58 };
59 
60 #endif // CPU_AARCH64_VM_FOREIGN_GLOBALS_AARCH64_HPP