1 /*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. 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
22 * questions.
23 *
24 */
25 // This file is a derivative work resulting from (and including) modifications
26 // made by Azul Systems, Inc. The dates of such changes are 2013-2016.
27 // Copyright 2013-2016 Azul Systems, Inc. All Rights Reserved.
28 //
29 // Please contact Azul Systems, 385 Moffett Park Drive, Suite 115, Sunnyvale,
30 // CA 94089 USA or visit www.azul.com if you need additional information or
31 // have any questions.
32
33 #ifndef CPU_AARCH32_VM_C1_MACROASSEMBLER_AARCH32_HPP
34 #define CPU_AARCH32_VM_C1_MACROASSEMBLER_AARCH32_HPP
35
36 // C1_MacroAssembler contains high-level macros for C1
37
38 private:
39 int _rsp_offset; // track rsp changes
40 // initialization
41 void pd_init() { _rsp_offset = 0; }
42
43 void zero_memory(Register addr, Register len, Register t1);
44
45 public:
46 void try_allocate(
47 Register obj, // result: pointer to object after successful allocation
48 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
49 int con_size_in_bytes, // object size in bytes if known at compile time
50 Register t1, // temp register
51 Register t2, // temp register
52 Label& slow_case // continuation point if fast allocation fails
53 );
54
55 void initialize_header(Register obj, Register klass, Register len, Register t1, Register t2);
56 void initialize_body(Register obj, Register len_in_bytes, int hdr_size_in_bytes, Register t1);
57
58 void float_cmp(bool is_float, int unordered_result,
59 FloatRegister f0, FloatRegister f1,
60 Register result);
61
62 // locking
63 // hdr : must be r0, contents destroyed
64 // obj : must point to the object to lock, contents preserved
65 // disp_hdr: must point to the displaced header location, contents preserved
66 // scratch : scratch register, contents destroyed
67 // returns code offset at which to add null check debug information
68 int lock_object (Register swap, Register obj, Register disp_hdr, Register scratch, Label& slow_case);
69
70 // unlocking
71 // hdr : contents destroyed
72 // obj : must point to the object to lock, contents preserved
73 // disp_hdr: must be r0 & must point to the displaced header location, contents destroyed
74 void unlock_object(Register swap, Register obj, Register lock, Label& slow_case);
75
76 void initialize_object(
77 Register obj, // result: pointer to object after successful allocation
78 Register klass, // object klass
79 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
80 int con_size_in_bytes, // object size in bytes if known at compile time
81 Register t1, // temp register
82 Register t2 // temp register
83 );
84
85 // allocation of fixed-size objects
86 // (can also be used to allocate fixed-size arrays, by setting
87 // hdr_size correctly and storing the array length afterwards)
88 // obj : will contain pointer to allocated object
89 // t1, t2 : scratch registers - contents destroyed
90 // header_size: size of object header in words
91 // object_size: total size of object in words
92 // slow_case : exit to slow case implementation if fast allocation fails
93 void allocate_object(Register obj, Register t1, Register t2, int header_size, int object_size, Register klass, Label& slow_case);
94
95 enum {
96 max_array_allocation_length = 0x00FFFFFF
97 };
98
99 // allocation of arrays
100 // obj : will contain pointer to allocated object
101 // len : array length in number of elements
102 // t : scratch register - contents destroyed
103 // header_size: size of object header in words
104 // f : element scale factor
105 // slow_case : exit to slow case implementation if fast allocation fails
106 void allocate_array(Register obj, Register len, Register t, Register t2, int header_size, int f, Register klass, Label& slow_case);
107
108 int rsp_offset() const { return _rsp_offset; }
109 void set_rsp_offset(int n) { _rsp_offset = n; }
110
111 void invalidate_registers(bool inv_r0, bool inv_r2, bool inv_r3) PRODUCT_RETURN;
112
113 #endif // CPU_AARCH32_VM_C1_MACROASSEMBLER_AARCH32_HPP