1 /*
2 * Copyright (c) 2013, Red Hat Inc.
3 * Copyright (c) 1999, 2010, Oracle and/or its affiliates.
4 * All rights reserved.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 *
25 */
26
27 #ifndef CPU_AARCH64_VM_C1_MACROASSEMBLER_AARCH64_HPP
28 #define CPU_AARCH64_VM_C1_MACROASSEMBLER_AARCH64_HPP
29
30 using MacroAssembler::build_frame;
31 using MacroAssembler::null_check;
32
33 // C1_MacroAssembler contains high-level macros for C1
34
35 private:
36 int _rsp_offset; // track rsp changes
37 // initialization
38 void pd_init() { _rsp_offset = 0; }
39
40 void zero_memory(Register addr, Register len, Register t1);
41
42 public:
43 void try_allocate(
44 Register obj, // result: pointer to object after successful allocation
45 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
46 int con_size_in_bytes, // object size in bytes if known at compile time
47 Register t1, // temp register
48 Register t2, // temp register
49 Label& slow_case // continuation point if fast allocation fails
50 );
51
52 void initialize_header(Register obj, Register klass, Register len, Register t1, Register t2);
53 void initialize_body(Register obj, Register len_in_bytes, int hdr_size_in_bytes, Register t1);
54
55 void float_cmp(bool is_float, int unordered_result,
56 FloatRegister f0, FloatRegister f1,
57 Register result);
58
59 // locking
60 // hdr : must be r0, contents destroyed
61 // obj : must point to the object to lock, contents preserved
62 // disp_hdr: must point to the displaced header location, contents preserved
63 // scratch : scratch register, contents destroyed
64 // returns code offset at which to add null check debug information
65 int lock_object (Register swap, Register obj, Register disp_hdr, Register scratch, Label& slow_case);
66
67 // unlocking
68 // hdr : contents destroyed
69 // obj : must point to the object to lock, contents preserved
70 // disp_hdr: must be r0 & must point to the displaced header location, contents destroyed
71 void unlock_object(Register swap, Register obj, Register lock, Label& slow_case);
72
73 void initialize_object(
74 Register obj, // result: pointer to object after successful allocation
75 Register klass, // object klass
76 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
77 int con_size_in_bytes, // object size in bytes if known at compile time
78 Register t1, // temp register
79 Register t2 // temp register
80 );
81
82 // allocation of fixed-size objects
83 // (can also be used to allocate fixed-size arrays, by setting
84 // hdr_size correctly and storing the array length afterwards)
85 // obj : will contain pointer to allocated object
86 // t1, t2 : scratch registers - contents destroyed
87 // header_size: size of object header in words
88 // object_size: total size of object in words
89 // slow_case : exit to slow case implementation if fast allocation fails
90 void allocate_object(Register obj, Register t1, Register t2, int header_size, int object_size, Register klass, Label& slow_case);
91
92 enum {
93 max_array_allocation_length = 0x00FFFFFF
94 };
95
96 // allocation of arrays
97 // obj : will contain pointer to allocated object
98 // len : array length in number of elements
99 // t : scratch register - contents destroyed
100 // header_size: size of object header in words
101 // f : element scale factor
102 // slow_case : exit to slow case implementation if fast allocation fails
103 void allocate_array(Register obj, Register len, Register t, Register t2, int header_size, int f, Register klass, Label& slow_case);
104
105 int rsp_offset() const { return _rsp_offset; }
106 void set_rsp_offset(int n) { _rsp_offset = n; }
107
108 void invalidate_registers(bool inv_r0, bool inv_r19, bool inv_r2, bool inv_r3, bool inv_r4, bool inv_r5) PRODUCT_RETURN;
109
110 #endif // CPU_AARCH64_VM_C1_MACROASSEMBLER_AARCH64_HPP