1 /*
2 * Copyright (C) 2012 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 #include <math.h>
18 #include <string.h>
19
20 #include "entrypoints/jni/jni_entrypoints.h"
21 #include "entrypoints/quick/quick_alloc_entrypoints.h"
22 #include "entrypoints/quick/quick_default_externs.h"
23 #include "entrypoints/quick/quick_default_init_entrypoints.h"
24 #include "entrypoints/quick/quick_entrypoints.h"
25 #include "entrypoints/entrypoint_utils.h"
26 #include "entrypoints/math_entrypoints.h"
27 #include "entrypoints/runtime_asm_entrypoints.h"
28 #include "interpreter/interpreter.h"
29
30 namespace art {
31
32 // Cast entrypoints.
33 extern "C" size_t artInstanceOfFromCode(mirror::Object* obj, mirror::Class* ref_class);
34
35 // Read barrier entrypoints.
36 // art_quick_read_barrier_mark_regX uses an non-standard calling
37 // convention: it expects its input in register X and returns its
38 // result in that same register, and saves and restores all
39 // caller-save registers.
40 extern "C" mirror::Object* art_quick_read_barrier_mark_reg00(mirror::Object*);
41 extern "C" mirror::Object* art_quick_read_barrier_mark_reg01(mirror::Object*);
42 extern "C" mirror::Object* art_quick_read_barrier_mark_reg02(mirror::Object*);
43 extern "C" mirror::Object* art_quick_read_barrier_mark_reg03(mirror::Object*);
44 extern "C" mirror::Object* art_quick_read_barrier_mark_reg04(mirror::Object*);
45 extern "C" mirror::Object* art_quick_read_barrier_mark_reg05(mirror::Object*);
46 extern "C" mirror::Object* art_quick_read_barrier_mark_reg06(mirror::Object*);
47 extern "C" mirror::Object* art_quick_read_barrier_mark_reg07(mirror::Object*);
48 extern "C" mirror::Object* art_quick_read_barrier_mark_reg08(mirror::Object*);
49 extern "C" mirror::Object* art_quick_read_barrier_mark_reg09(mirror::Object*);
50 extern "C" mirror::Object* art_quick_read_barrier_mark_reg10(mirror::Object*);
51 extern "C" mirror::Object* art_quick_read_barrier_mark_reg11(mirror::Object*);
52 extern "C" mirror::Object* art_quick_read_barrier_mark_reg12(mirror::Object*);
53
54 // Used by soft float.
55 // Single-precision FP arithmetics.
56 extern "C" float fmodf(float a, float b); // REM_FLOAT[_2ADDR]
57 // Double-precision FP arithmetics.
58 extern "C" double fmod(double a, double b); // REM_DOUBLE[_2ADDR]
59
60 // Used by hard float.
61 extern "C" float art_quick_fmodf(float a, float b); // REM_FLOAT[_2ADDR]
62 extern "C" double art_quick_fmod(double a, double b); // REM_DOUBLE[_2ADDR]
63
64 // Integer arithmetics.
65 extern "C" int __aeabi_idivmod(int32_t, int32_t); // [DIV|REM]_INT[_2ADDR|_LIT8|_LIT16]
66
67 // Long long arithmetics - REM_LONG[_2ADDR] and DIV_LONG[_2ADDR]
68 extern "C" int64_t __aeabi_ldivmod(int64_t, int64_t);
69
UpdateReadBarrierEntrypoints(QuickEntryPoints * qpoints,bool is_marking)70 void UpdateReadBarrierEntrypoints(QuickEntryPoints* qpoints, bool is_marking) {
71 qpoints->pReadBarrierMarkReg00 = is_marking ? art_quick_read_barrier_mark_reg00 : nullptr;
72 qpoints->pReadBarrierMarkReg01 = is_marking ? art_quick_read_barrier_mark_reg01 : nullptr;
73 qpoints->pReadBarrierMarkReg02 = is_marking ? art_quick_read_barrier_mark_reg02 : nullptr;
74 qpoints->pReadBarrierMarkReg03 = is_marking ? art_quick_read_barrier_mark_reg03 : nullptr;
75 qpoints->pReadBarrierMarkReg04 = is_marking ? art_quick_read_barrier_mark_reg04 : nullptr;
76 qpoints->pReadBarrierMarkReg05 = is_marking ? art_quick_read_barrier_mark_reg05 : nullptr;
77 qpoints->pReadBarrierMarkReg06 = is_marking ? art_quick_read_barrier_mark_reg06 : nullptr;
78 qpoints->pReadBarrierMarkReg07 = is_marking ? art_quick_read_barrier_mark_reg07 : nullptr;
79 qpoints->pReadBarrierMarkReg08 = is_marking ? art_quick_read_barrier_mark_reg08 : nullptr;
80 qpoints->pReadBarrierMarkReg09 = is_marking ? art_quick_read_barrier_mark_reg09 : nullptr;
81 qpoints->pReadBarrierMarkReg10 = is_marking ? art_quick_read_barrier_mark_reg10 : nullptr;
82 qpoints->pReadBarrierMarkReg11 = is_marking ? art_quick_read_barrier_mark_reg11 : nullptr;
83 }
84
InitEntryPoints(JniEntryPoints * jpoints,QuickEntryPoints * qpoints)85 void InitEntryPoints(JniEntryPoints* jpoints, QuickEntryPoints* qpoints) {
86 DefaultInitEntryPoints(jpoints, qpoints);
87
88 // Cast
89 qpoints->pInstanceofNonTrivial = artInstanceOfFromCode;
90 qpoints->pCheckInstanceOf = art_quick_check_instance_of;
91
92 // Math
93 qpoints->pIdivmod = __aeabi_idivmod;
94 qpoints->pLdiv = __aeabi_ldivmod;
95 qpoints->pLmod = __aeabi_ldivmod; // result returned in r2:r3
96 qpoints->pLmul = art_quick_mul_long;
97 qpoints->pShlLong = art_quick_shl_long;
98 qpoints->pShrLong = art_quick_shr_long;
99 qpoints->pUshrLong = art_quick_ushr_long;
100 if (kArm32QuickCodeUseSoftFloat) {
101 qpoints->pFmod = fmod;
102 qpoints->pFmodf = fmodf;
103 qpoints->pD2l = art_d2l;
104 qpoints->pF2l = art_f2l;
105 qpoints->pL2f = art_l2f;
106 } else {
107 qpoints->pFmod = art_quick_fmod;
108 qpoints->pFmodf = art_quick_fmodf;
109 qpoints->pD2l = art_quick_d2l;
110 qpoints->pF2l = art_quick_f2l;
111 qpoints->pL2f = art_quick_l2f;
112 }
113
114 // More math.
115 qpoints->pCos = cos;
116 qpoints->pSin = sin;
117 qpoints->pAcos = acos;
118 qpoints->pAsin = asin;
119 qpoints->pAtan = atan;
120 qpoints->pAtan2 = atan2;
121 qpoints->pCbrt = cbrt;
122 qpoints->pCosh = cosh;
123 qpoints->pExp = exp;
124 qpoints->pExpm1 = expm1;
125 qpoints->pHypot = hypot;
126 qpoints->pLog = log;
127 qpoints->pLog10 = log10;
128 qpoints->pNextAfter = nextafter;
129 qpoints->pSinh = sinh;
130 qpoints->pTan = tan;
131 qpoints->pTanh = tanh;
132
133 // Intrinsics
134 qpoints->pIndexOf = art_quick_indexof;
135 // The ARM StringCompareTo intrinsic does not call the runtime.
136 qpoints->pStringCompareTo = nullptr;
137 qpoints->pMemcpy = memcpy;
138
139 // Read barrier.
140 qpoints->pReadBarrierJni = ReadBarrierJni;
141 UpdateReadBarrierEntrypoints(qpoints, /*is_marking*/ false);
142 qpoints->pReadBarrierMarkReg12 = nullptr; // Cannot use register 12 (IP) to pass arguments.
143 qpoints->pReadBarrierMarkReg13 = nullptr; // Cannot use register 13 (SP) to pass arguments.
144 qpoints->pReadBarrierMarkReg14 = nullptr; // Cannot use register 14 (LR) to pass arguments.
145 qpoints->pReadBarrierMarkReg15 = nullptr; // Cannot use register 15 (PC) to pass arguments.
146 // ARM has only 16 core registers.
147 qpoints->pReadBarrierMarkReg16 = nullptr;
148 qpoints->pReadBarrierMarkReg17 = nullptr;
149 qpoints->pReadBarrierMarkReg18 = nullptr;
150 qpoints->pReadBarrierMarkReg19 = nullptr;
151 qpoints->pReadBarrierMarkReg20 = nullptr;
152 qpoints->pReadBarrierMarkReg21 = nullptr;
153 qpoints->pReadBarrierMarkReg22 = nullptr;
154 qpoints->pReadBarrierMarkReg23 = nullptr;
155 qpoints->pReadBarrierMarkReg24 = nullptr;
156 qpoints->pReadBarrierMarkReg25 = nullptr;
157 qpoints->pReadBarrierMarkReg26 = nullptr;
158 qpoints->pReadBarrierMarkReg27 = nullptr;
159 qpoints->pReadBarrierMarkReg28 = nullptr;
160 qpoints->pReadBarrierMarkReg29 = nullptr;
161 qpoints->pReadBarrierSlow = artReadBarrierSlow;
162 qpoints->pReadBarrierForRootSlow = artReadBarrierForRootSlow;
163 }
164
165 } // namespace art
166