1 /*
2  * Copyright (C) 2014 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_MIPS64_ASM_SUPPORT_MIPS64_H_
18 #define ART_RUNTIME_ARCH_MIPS64_ASM_SUPPORT_MIPS64_H_
19 
20 #include "asm_support.h"
21 
22 // 64 ($f24-$f31) + 64 ($s0-$s7) + 8 ($gp) + 8 ($s8) + 8 ($ra) + 1x8 bytes padding
23 #define FRAME_SIZE_SAVE_ALL_CALLEE_SAVES 160
24 // 48 ($s2-$s7) + 8 ($gp) + 8 ($s8) + 8 ($ra) + 1x8 bytes padding
25 #define FRAME_SIZE_SAVE_REFS_ONLY 80
26 // $f12-$f19, $a1-$a7, $s2-$s7 + $gp + $s8 + $ra, 16 total + 1x8 bytes padding + method*
27 #define FRAME_SIZE_SAVE_REFS_AND_ARGS 208
28 // $f0-$f31, $at, $v0-$v1, $a0-$a7, $t0-$t3, $s0-$s7, $t8-$t9, $gp, $s8, $ra + padding + method*
29 #define FRAME_SIZE_SAVE_EVERYTHING 496
30 #define FRAME_SIZE_SAVE_EVERYTHING_FOR_CLINIT FRAME_SIZE_SAVE_EVERYTHING
31 #define FRAME_SIZE_SAVE_EVERYTHING_FOR_SUSPEND_CHECK FRAME_SIZE_SAVE_EVERYTHING
32 
33 // &art_quick_read_barrier_mark_introspection is the first of many entry points:
34 //   20 entry points for long field offsets, large array indices and variable array indices
35 //     (see macro BRB_FIELD_LONG_OFFSET_ENTRY)
36 //   20 entry points for short field offsets and small array indices
37 //     (see macro BRB_FIELD_SHORT_OFFSET_ENTRY)
38 //   20 entry points for GC roots
39 //     (see macro BRB_GC_ROOT_ENTRY)
40 
41 // There are as many entry points of each kind as there are registers that
42 // can hold a reference: V0-V1, A0-A7, T0-T2, S2-S8.
43 #define BAKER_MARK_INTROSPECTION_REGISTER_COUNT 20
44 
45 #define BAKER_MARK_INTROSPECTION_FIELD_ARRAY_ENTRY_SIZE (8 * 4)  // 8 instructions in
46                                                                  // BRB_FIELD_*_OFFSET_ENTRY.
47 
48 #define BAKER_MARK_INTROSPECTION_GC_ROOT_ENTRIES_OFFSET \
49     (2 * BAKER_MARK_INTROSPECTION_REGISTER_COUNT * BAKER_MARK_INTROSPECTION_FIELD_ARRAY_ENTRY_SIZE)
50 
51 #define BAKER_MARK_INTROSPECTION_GC_ROOT_ENTRY_SIZE (4 * 4)  // 4 instructions in BRB_GC_ROOT_ENTRY.
52 
53 #endif  // ART_RUNTIME_ARCH_MIPS64_ASM_SUPPORT_MIPS64_H_
54