1 /*
2  * Copyright (C) 2013 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ART_RUNTIME_ARCH_MIPS_ASM_SUPPORT_MIPS_H_
18 #define ART_RUNTIME_ARCH_MIPS_ASM_SUPPORT_MIPS_H_
19 
20 #include "asm_support.h"
21 
22 #define FRAME_SIZE_SAVE_ALL_CALLEE_SAVES 112
23 #define FRAME_SIZE_SAVE_REFS_ONLY 48
24 #define FRAME_SIZE_SAVE_REFS_AND_ARGS 112
25 #define FRAME_SIZE_SAVE_EVERYTHING 256
26 #define FRAME_SIZE_SAVE_EVERYTHING_FOR_CLINIT FRAME_SIZE_SAVE_EVERYTHING
27 #define FRAME_SIZE_SAVE_EVERYTHING_FOR_SUSPEND_CHECK FRAME_SIZE_SAVE_EVERYTHING
28 
29 // &art_quick_read_barrier_mark_introspection is the first of many entry points:
30 //   21 entry points for long field offsets, large array indices and variable array indices
31 //     (see macro BRB_FIELD_LONG_OFFSET_ENTRY)
32 //   21 entry points for short field offsets and small array indices
33 //     (see macro BRB_FIELD_SHORT_OFFSET_ENTRY)
34 //   21 entry points for GC roots
35 //     (see macro BRB_GC_ROOT_ENTRY)
36 
37 // There are as many entry points of each kind as there are registers that
38 // can hold a reference: V0-V1, A0-A3, T0-T7, S2-S8.
39 #define BAKER_MARK_INTROSPECTION_REGISTER_COUNT 21
40 
41 #define BAKER_MARK_INTROSPECTION_FIELD_ARRAY_ENTRY_SIZE (8 * 4)  // 8 instructions in
42                                                                  // BRB_FIELD_*_OFFSET_ENTRY.
43 
44 #define BAKER_MARK_INTROSPECTION_GC_ROOT_ENTRIES_OFFSET \
45     (2 * BAKER_MARK_INTROSPECTION_REGISTER_COUNT * BAKER_MARK_INTROSPECTION_FIELD_ARRAY_ENTRY_SIZE)
46 
47 #define BAKER_MARK_INTROSPECTION_GC_ROOT_ENTRY_SIZE (4 * 4)  // 4 instructions in BRB_GC_ROOT_ENTRY.
48 
49 #endif  // ART_RUNTIME_ARCH_MIPS_ASM_SUPPORT_MIPS_H_
50