Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 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 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 17 | #ifndef ART_RUNTIME_STACK_H_ |
| 18 | #define ART_RUNTIME_STACK_H_ |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 19 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 20 | #include <stdint.h> |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 21 | #include <string> |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 22 | |
Ian Rogers | d582fa4 | 2014-11-05 23:46:43 -0800 | [diff] [blame] | 23 | #include "arch/instruction_set.h" |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 24 | #include "dex_file.h" |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 25 | #include "mirror/object_reference.h" |
| 26 | #include "throw_location.h" |
| 27 | #include "utils.h" |
| 28 | #include "verify_object.h" |
| 29 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 30 | namespace art { |
| 31 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 32 | namespace mirror { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 33 | class ArtMethod; |
| 34 | class Object; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 35 | } // namespace mirror |
| 36 | |
| 37 | class Context; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 38 | class ShadowFrame; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 39 | class HandleScope; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 40 | class ScopedObjectAccess; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 41 | class Thread; |
| 42 | |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 43 | // The kind of vreg being accessed in calls to Set/GetVReg. |
| 44 | enum VRegKind { |
| 45 | kReferenceVReg, |
| 46 | kIntVReg, |
| 47 | kFloatVReg, |
| 48 | kLongLoVReg, |
| 49 | kLongHiVReg, |
| 50 | kDoubleLoVReg, |
| 51 | kDoubleHiVReg, |
| 52 | kConstant, |
| 53 | kImpreciseConstant, |
| 54 | kUndefined, |
| 55 | }; |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 56 | std::ostream& operator<<(std::ostream& os, const VRegKind& rhs); |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 57 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 58 | // A reference from the shadow stack to a MirrorType object within the Java heap. |
| 59 | template<class MirrorType> |
| 60 | class MANAGED StackReference : public mirror::ObjectReference<false, MirrorType> { |
| 61 | public: |
| 62 | StackReference<MirrorType>() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| 63 | : mirror::ObjectReference<false, MirrorType>(nullptr) {} |
| 64 | |
| 65 | static StackReference<MirrorType> FromMirrorPtr(MirrorType* p) |
| 66 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 67 | return StackReference<MirrorType>(p); |
| 68 | } |
| 69 | |
| 70 | private: |
| 71 | StackReference<MirrorType>(MirrorType* p) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| 72 | : mirror::ObjectReference<false, MirrorType>(p) {} |
| 73 | }; |
| 74 | |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 75 | // ShadowFrame has 2 possible layouts: |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 76 | // - interpreter - separate VRegs and reference arrays. References are in the reference array. |
| 77 | // - JNI - just VRegs, but where every VReg holds a reference. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 78 | class ShadowFrame { |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 79 | public: |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 80 | // Compute size of ShadowFrame in bytes assuming it has a reference array. |
Jeff Hao | 6613519 | 2013-05-14 11:02:41 -0700 | [diff] [blame] | 81 | static size_t ComputeSize(uint32_t num_vregs) { |
| 82 | return sizeof(ShadowFrame) + (sizeof(uint32_t) * num_vregs) + |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 83 | (sizeof(StackReference<mirror::Object>) * num_vregs); |
Jeff Hao | 6613519 | 2013-05-14 11:02:41 -0700 | [diff] [blame] | 84 | } |
| 85 | |
| 86 | // Create ShadowFrame in heap for deoptimization. |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 87 | static ShadowFrame* Create(uint32_t num_vregs, ShadowFrame* link, |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 88 | mirror::ArtMethod* method, uint32_t dex_pc) { |
Jeff Hao | 6613519 | 2013-05-14 11:02:41 -0700 | [diff] [blame] | 89 | uint8_t* memory = new uint8_t[ComputeSize(num_vregs)]; |
Sebastien Hertz | c61124b | 2013-09-10 11:44:19 +0200 | [diff] [blame] | 90 | return Create(num_vregs, link, method, dex_pc, memory); |
Jeff Hao | 6613519 | 2013-05-14 11:02:41 -0700 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | // Create ShadowFrame for interpreter using provided memory. |
| 94 | static ShadowFrame* Create(uint32_t num_vregs, ShadowFrame* link, |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 95 | mirror::ArtMethod* method, uint32_t dex_pc, void* memory) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 96 | ShadowFrame* sf = new (memory) ShadowFrame(num_vregs, link, method, dex_pc, true); |
| 97 | return sf; |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 98 | } |
| 99 | ~ShadowFrame() {} |
| 100 | |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 101 | bool HasReferenceArray() const { |
Ian Rogers | 8a01a3a | 2013-05-06 13:25:44 -0700 | [diff] [blame] | 102 | return true; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 103 | } |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 104 | |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 105 | uint32_t NumberOfVRegs() const { |
Ian Rogers | 8a01a3a | 2013-05-06 13:25:44 -0700 | [diff] [blame] | 106 | return number_of_vregs_; |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 107 | } |
| 108 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 109 | uint32_t GetDexPC() const { |
| 110 | return dex_pc_; |
| 111 | } |
| 112 | |
| 113 | void SetDexPC(uint32_t dex_pc) { |
| 114 | dex_pc_ = dex_pc; |
| 115 | } |
| 116 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 117 | ShadowFrame* GetLink() const { |
| 118 | return link_; |
| 119 | } |
| 120 | |
| 121 | void SetLink(ShadowFrame* frame) { |
| 122 | DCHECK_NE(this, frame); |
| 123 | link_ = frame; |
| 124 | } |
| 125 | |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 126 | int32_t GetVReg(size_t i) const { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 127 | DCHECK_LT(i, NumberOfVRegs()); |
| 128 | const uint32_t* vreg = &vregs_[i]; |
| 129 | return *reinterpret_cast<const int32_t*>(vreg); |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | float GetVRegFloat(size_t i) const { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 133 | DCHECK_LT(i, NumberOfVRegs()); |
| 134 | // NOTE: Strict-aliasing? |
| 135 | const uint32_t* vreg = &vregs_[i]; |
| 136 | return *reinterpret_cast<const float*>(vreg); |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | int64_t GetVRegLong(size_t i) const { |
Sebastien Hertz | 807a256 | 2013-04-15 09:33:39 +0200 | [diff] [blame] | 140 | DCHECK_LT(i, NumberOfVRegs()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 141 | const uint32_t* vreg = &vregs_[i]; |
Jeff Hao | e47637c | 2013-09-19 15:13:16 -0700 | [diff] [blame] | 142 | // Alignment attribute required for GCC 4.8 |
| 143 | typedef const int64_t unaligned_int64 __attribute__ ((aligned (4))); |
| 144 | return *reinterpret_cast<unaligned_int64*>(vreg); |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | double GetVRegDouble(size_t i) const { |
Sebastien Hertz | 807a256 | 2013-04-15 09:33:39 +0200 | [diff] [blame] | 148 | DCHECK_LT(i, NumberOfVRegs()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 149 | const uint32_t* vreg = &vregs_[i]; |
Jeff Hao | e47637c | 2013-09-19 15:13:16 -0700 | [diff] [blame] | 150 | // Alignment attribute required for GCC 4.8 |
| 151 | typedef const double unaligned_double __attribute__ ((aligned (4))); |
| 152 | return *reinterpret_cast<unaligned_double*>(vreg); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 153 | } |
| 154 | |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 155 | template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 156 | mirror::Object* GetVRegReference(size_t i) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 157 | DCHECK_LT(i, NumberOfVRegs()); |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 158 | mirror::Object* ref; |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 159 | if (HasReferenceArray()) { |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 160 | ref = References()[i].AsMirrorPtr(); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 161 | } else { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 162 | const uint32_t* vreg_ptr = &vregs_[i]; |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 163 | ref = reinterpret_cast<const StackReference<mirror::Object>*>(vreg_ptr)->AsMirrorPtr(); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 164 | } |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 165 | if (kVerifyFlags & kVerifyReads) { |
| 166 | VerifyObject(ref); |
| 167 | } |
| 168 | return ref; |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 169 | } |
| 170 | |
Jeff Hao | 1674363 | 2013-05-08 10:59:04 -0700 | [diff] [blame] | 171 | // Get view of vregs as range of consecutive arguments starting at i. |
| 172 | uint32_t* GetVRegArgs(size_t i) { |
| 173 | return &vregs_[i]; |
| 174 | } |
| 175 | |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 176 | void SetVReg(size_t i, int32_t val) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 177 | DCHECK_LT(i, NumberOfVRegs()); |
| 178 | uint32_t* vreg = &vregs_[i]; |
| 179 | *reinterpret_cast<int32_t*>(vreg) = val; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 180 | // This is needed for moving collectors since these can update the vreg references if they |
| 181 | // happen to agree with references in the reference array. |
| 182 | if (kMovingCollector && HasReferenceArray()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 183 | References()[i].Clear(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 184 | } |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | void SetVRegFloat(size_t i, float val) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 188 | DCHECK_LT(i, NumberOfVRegs()); |
| 189 | uint32_t* vreg = &vregs_[i]; |
| 190 | *reinterpret_cast<float*>(vreg) = val; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 191 | // This is needed for moving collectors since these can update the vreg references if they |
| 192 | // happen to agree with references in the reference array. |
| 193 | if (kMovingCollector && HasReferenceArray()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 194 | References()[i].Clear(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 195 | } |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | void SetVRegLong(size_t i, int64_t val) { |
Sebastien Hertz | 807a256 | 2013-04-15 09:33:39 +0200 | [diff] [blame] | 199 | DCHECK_LT(i, NumberOfVRegs()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 200 | uint32_t* vreg = &vregs_[i]; |
Jeff Hao | e47637c | 2013-09-19 15:13:16 -0700 | [diff] [blame] | 201 | // Alignment attribute required for GCC 4.8 |
| 202 | typedef int64_t unaligned_int64 __attribute__ ((aligned (4))); |
| 203 | *reinterpret_cast<unaligned_int64*>(vreg) = val; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 204 | // This is needed for moving collectors since these can update the vreg references if they |
| 205 | // happen to agree with references in the reference array. |
| 206 | if (kMovingCollector && HasReferenceArray()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 207 | References()[i].Clear(); |
| 208 | References()[i + 1].Clear(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 209 | } |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | void SetVRegDouble(size_t i, double val) { |
Sebastien Hertz | 807a256 | 2013-04-15 09:33:39 +0200 | [diff] [blame] | 213 | DCHECK_LT(i, NumberOfVRegs()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 214 | uint32_t* vreg = &vregs_[i]; |
Jeff Hao | e47637c | 2013-09-19 15:13:16 -0700 | [diff] [blame] | 215 | // Alignment attribute required for GCC 4.8 |
| 216 | typedef double unaligned_double __attribute__ ((aligned (4))); |
| 217 | *reinterpret_cast<unaligned_double*>(vreg) = val; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 218 | // This is needed for moving collectors since these can update the vreg references if they |
| 219 | // happen to agree with references in the reference array. |
| 220 | if (kMovingCollector && HasReferenceArray()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 221 | References()[i].Clear(); |
| 222 | References()[i + 1].Clear(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 223 | } |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 224 | } |
| 225 | |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 226 | template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 227 | void SetVRegReference(size_t i, mirror::Object* val) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 228 | DCHECK_LT(i, NumberOfVRegs()); |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 229 | if (kVerifyFlags & kVerifyWrites) { |
| 230 | VerifyObject(val); |
| 231 | } |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 232 | uint32_t* vreg = &vregs_[i]; |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 233 | reinterpret_cast<StackReference<mirror::Object>*>(vreg)->Assign(val); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 234 | if (HasReferenceArray()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 235 | References()[i].Assign(val); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 236 | } |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 237 | } |
| 238 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 239 | mirror::ArtMethod* GetMethod() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 240 | DCHECK(method_ != nullptr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 241 | return method_; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 242 | } |
| 243 | |
Hiroshi Yamauchi | 92d1a66 | 2014-05-15 21:43:59 -0700 | [diff] [blame] | 244 | mirror::ArtMethod** GetMethodAddress() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 245 | DCHECK(method_ != nullptr); |
| 246 | return &method_; |
| 247 | } |
| 248 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 249 | mirror::Object* GetThisObject() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 250 | |
Jeff Hao | e701f48 | 2013-05-24 11:50:49 -0700 | [diff] [blame] | 251 | mirror::Object* GetThisObject(uint16_t num_ins) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 252 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 253 | ThrowLocation GetCurrentLocationForThrow() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 254 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 255 | bool Contains(StackReference<mirror::Object>* shadow_frame_entry_obj) const { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 256 | if (HasReferenceArray()) { |
| 257 | return ((&References()[0] <= shadow_frame_entry_obj) && |
| 258 | (shadow_frame_entry_obj <= (&References()[NumberOfVRegs() - 1]))); |
| 259 | } else { |
| 260 | uint32_t* shadow_frame_entry = reinterpret_cast<uint32_t*>(shadow_frame_entry_obj); |
| 261 | return ((&vregs_[0] <= shadow_frame_entry) && |
| 262 | (shadow_frame_entry <= (&vregs_[NumberOfVRegs() - 1]))); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 263 | } |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 264 | } |
| 265 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 266 | static size_t LinkOffset() { |
| 267 | return OFFSETOF_MEMBER(ShadowFrame, link_); |
| 268 | } |
| 269 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 270 | static size_t MethodOffset() { |
| 271 | return OFFSETOF_MEMBER(ShadowFrame, method_); |
| 272 | } |
| 273 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 274 | static size_t DexPCOffset() { |
| 275 | return OFFSETOF_MEMBER(ShadowFrame, dex_pc_); |
| 276 | } |
| 277 | |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 278 | static size_t NumberOfVRegsOffset() { |
| 279 | return OFFSETOF_MEMBER(ShadowFrame, number_of_vregs_); |
| 280 | } |
| 281 | |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 282 | static size_t VRegsOffset() { |
| 283 | return OFFSETOF_MEMBER(ShadowFrame, vregs_); |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 284 | } |
| 285 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 286 | private: |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 287 | ShadowFrame(uint32_t num_vregs, ShadowFrame* link, mirror::ArtMethod* method, |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 288 | uint32_t dex_pc, bool has_reference_array) |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 289 | : number_of_vregs_(num_vregs), link_(link), method_(method), dex_pc_(dex_pc) { |
| 290 | if (has_reference_array) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 291 | memset(vregs_, 0, num_vregs * (sizeof(uint32_t) + sizeof(StackReference<mirror::Object>))); |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 292 | } else { |
Jeff Hao | e701f48 | 2013-05-24 11:50:49 -0700 | [diff] [blame] | 293 | memset(vregs_, 0, num_vregs * sizeof(uint32_t)); |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 294 | } |
| 295 | } |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 296 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 297 | const StackReference<mirror::Object>* References() const { |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 298 | DCHECK(HasReferenceArray()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 299 | const uint32_t* vreg_end = &vregs_[NumberOfVRegs()]; |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 300 | return reinterpret_cast<const StackReference<mirror::Object>*>(vreg_end); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 301 | } |
| 302 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 303 | StackReference<mirror::Object>* References() { |
| 304 | return const_cast<StackReference<mirror::Object>*>(const_cast<const ShadowFrame*>(this)->References()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 305 | } |
| 306 | |
Ian Rogers | 8a01a3a | 2013-05-06 13:25:44 -0700 | [diff] [blame] | 307 | const uint32_t number_of_vregs_; |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 308 | // Link to previous shadow frame or NULL. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 309 | ShadowFrame* link_; |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 310 | mirror::ArtMethod* method_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 311 | uint32_t dex_pc_; |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 312 | uint32_t vregs_[0]; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 313 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 314 | DISALLOW_IMPLICIT_CONSTRUCTORS(ShadowFrame); |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 315 | }; |
| 316 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 317 | // The managed stack is used to record fragments of managed code stacks. Managed code stacks |
| 318 | // may either be shadow frames or lists of frames using fixed frame sizes. Transition records are |
| 319 | // necessary for transitions between code using different frame layouts and transitions into native |
| 320 | // code. |
Ian Rogers | df1ce91 | 2012-11-27 17:07:11 -0800 | [diff] [blame] | 321 | class PACKED(4) ManagedStack { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 322 | public: |
Ian Rogers | ca19066 | 2012-06-26 15:45:57 -0700 | [diff] [blame] | 323 | ManagedStack() |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 324 | : top_quick_frame_(nullptr), link_(nullptr), top_shadow_frame_(nullptr) {} |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 325 | |
| 326 | void PushManagedStackFragment(ManagedStack* fragment) { |
| 327 | // Copy this top fragment into given fragment. |
| 328 | memcpy(fragment, this, sizeof(ManagedStack)); |
| 329 | // Clear this fragment, which has become the top. |
| 330 | memset(this, 0, sizeof(ManagedStack)); |
| 331 | // Link our top fragment onto the given fragment. |
| 332 | link_ = fragment; |
| 333 | } |
| 334 | |
| 335 | void PopManagedStackFragment(const ManagedStack& fragment) { |
| 336 | DCHECK(&fragment == link_); |
| 337 | // Copy this given fragment back to the top. |
| 338 | memcpy(this, &fragment, sizeof(ManagedStack)); |
| 339 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 340 | |
| 341 | ManagedStack* GetLink() const { |
| 342 | return link_; |
| 343 | } |
| 344 | |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 345 | StackReference<mirror::ArtMethod>* GetTopQuickFrame() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 346 | return top_quick_frame_; |
| 347 | } |
| 348 | |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 349 | void SetTopQuickFrame(StackReference<mirror::ArtMethod>* top) { |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 350 | DCHECK(top_shadow_frame_ == nullptr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 351 | top_quick_frame_ = top; |
| 352 | } |
| 353 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 354 | static size_t TopQuickFrameOffset() { |
| 355 | return OFFSETOF_MEMBER(ManagedStack, top_quick_frame_); |
| 356 | } |
| 357 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 358 | ShadowFrame* PushShadowFrame(ShadowFrame* new_top_frame) { |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 359 | DCHECK(top_quick_frame_ == nullptr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 360 | ShadowFrame* old_frame = top_shadow_frame_; |
| 361 | top_shadow_frame_ = new_top_frame; |
| 362 | new_top_frame->SetLink(old_frame); |
| 363 | return old_frame; |
| 364 | } |
| 365 | |
| 366 | ShadowFrame* PopShadowFrame() { |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 367 | DCHECK(top_quick_frame_ == nullptr); |
| 368 | CHECK(top_shadow_frame_ != nullptr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 369 | ShadowFrame* frame = top_shadow_frame_; |
| 370 | top_shadow_frame_ = frame->GetLink(); |
| 371 | return frame; |
| 372 | } |
| 373 | |
| 374 | ShadowFrame* GetTopShadowFrame() const { |
| 375 | return top_shadow_frame_; |
| 376 | } |
| 377 | |
Jeff Hao | 11ffc2d | 2013-02-01 11:52:17 -0800 | [diff] [blame] | 378 | void SetTopShadowFrame(ShadowFrame* top) { |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 379 | DCHECK(top_quick_frame_ == nullptr); |
Jeff Hao | 11ffc2d | 2013-02-01 11:52:17 -0800 | [diff] [blame] | 380 | top_shadow_frame_ = top; |
| 381 | } |
| 382 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 383 | static size_t TopShadowFrameOffset() { |
| 384 | return OFFSETOF_MEMBER(ManagedStack, top_shadow_frame_); |
| 385 | } |
| 386 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 387 | size_t NumJniShadowFrameReferences() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 388 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 389 | bool ShadowFramesContain(StackReference<mirror::Object>* shadow_frame_entry) const; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 390 | |
| 391 | private: |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 392 | StackReference<mirror::ArtMethod>* top_quick_frame_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 393 | ManagedStack* link_; |
| 394 | ShadowFrame* top_shadow_frame_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 395 | }; |
| 396 | |
| 397 | class StackVisitor { |
| 398 | protected: |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 399 | StackVisitor(Thread* thread, Context* context) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 400 | |
| 401 | public: |
| 402 | virtual ~StackVisitor() {} |
| 403 | |
| 404 | // Return 'true' if we should continue to visit more frames, 'false' to stop. |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 405 | virtual bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) = 0; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 406 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 407 | void WalkStack(bool include_transitions = false) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 408 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 409 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 410 | mirror::ArtMethod* GetMethod() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 411 | if (cur_shadow_frame_ != nullptr) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 412 | return cur_shadow_frame_->GetMethod(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 413 | } else if (cur_quick_frame_ != nullptr) { |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 414 | return cur_quick_frame_->AsMirrorPtr(); |
Hiroshi Yamauchi | 92d1a66 | 2014-05-15 21:43:59 -0700 | [diff] [blame] | 415 | } else { |
| 416 | return nullptr; |
| 417 | } |
| 418 | } |
| 419 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 420 | bool IsShadowFrame() const { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 421 | return cur_shadow_frame_ != nullptr; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 422 | } |
| 423 | |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 424 | uint32_t GetDexPc(bool abort_on_failure = true) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 425 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 426 | mirror::Object* GetThisObject() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 427 | |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 428 | size_t GetNativePcOffset() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 429 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 430 | uintptr_t* CalleeSaveAddress(int num, size_t frame_size) const |
| 431 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 432 | // Callee saves are held at the top of the frame |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 433 | DCHECK(GetMethod() != nullptr); |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 434 | uint8_t* save_addr = |
| 435 | reinterpret_cast<uint8_t*>(cur_quick_frame_) + frame_size - ((num + 1) * sizeof(void*)); |
Andreas Gampe | bf6b92a | 2014-03-05 16:11:04 -0800 | [diff] [blame] | 436 | #if defined(__i386__) || defined(__x86_64__) |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 437 | save_addr -= sizeof(void*); // account for return address |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 438 | #endif |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 439 | return reinterpret_cast<uintptr_t*>(save_addr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 440 | } |
| 441 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 442 | // Returns the height of the stack in the managed stack frames, including transitions. |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 443 | size_t GetFrameHeight() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 444 | return GetNumFrames() - cur_depth_ - 1; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 445 | } |
| 446 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 447 | // Returns a frame ID for JDWP use, starting from 1. |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 448 | size_t GetFrameId() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 449 | return GetFrameHeight() + 1; |
| 450 | } |
| 451 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 452 | size_t GetNumFrames() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 453 | if (num_frames_ == 0) { |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 454 | num_frames_ = ComputeNumFrames(thread_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 455 | } |
| 456 | return num_frames_; |
| 457 | } |
| 458 | |
Hiroshi Yamauchi | 649278c | 2014-08-13 11:12:22 -0700 | [diff] [blame] | 459 | size_t GetFrameDepth() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 460 | return cur_depth_; |
| 461 | } |
| 462 | |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 463 | // Get the method and dex pc immediately after the one that's currently being visited. |
| 464 | bool GetNextMethodAndDexPc(mirror::ArtMethod** next_method, uint32_t* next_dex_pc) |
| 465 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 466 | |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 467 | bool GetVReg(mirror::ArtMethod* m, uint16_t vreg, VRegKind kind, uint32_t* val) const |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 468 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 469 | |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 470 | uint32_t GetVReg(mirror::ArtMethod* m, uint16_t vreg, VRegKind kind) const |
| 471 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 472 | uint32_t val; |
| 473 | bool success = GetVReg(m, vreg, kind, &val); |
| 474 | CHECK(success) << "Failed to read vreg " << vreg << " of kind " << kind; |
| 475 | return val; |
| 476 | } |
| 477 | |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 478 | bool GetVRegPair(mirror::ArtMethod* m, uint16_t vreg, VRegKind kind_lo, VRegKind kind_hi, |
| 479 | uint64_t* val) const |
| 480 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 481 | |
| 482 | uint64_t GetVRegPair(mirror::ArtMethod* m, uint16_t vreg, VRegKind kind_lo, |
| 483 | VRegKind kind_hi) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 484 | uint64_t val; |
| 485 | bool success = GetVRegPair(m, vreg, kind_lo, kind_hi, &val); |
| 486 | CHECK(success) << "Failed to read vreg pair " << vreg |
| 487 | << " of kind [" << kind_lo << "," << kind_hi << "]"; |
| 488 | return val; |
| 489 | } |
| 490 | |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 491 | bool SetVReg(mirror::ArtMethod* m, uint16_t vreg, uint32_t new_value, VRegKind kind) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 492 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 493 | |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 494 | bool SetVRegPair(mirror::ArtMethod* m, uint16_t vreg, uint64_t new_value, |
| 495 | VRegKind kind_lo, VRegKind kind_hi) |
| 496 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 497 | |
Mathieu Chartier | 815873e | 2014-02-13 18:02:13 -0800 | [diff] [blame] | 498 | uintptr_t* GetGPRAddress(uint32_t reg) const; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 499 | |
Mathieu Chartier | 423d2a3 | 2013-09-12 17:33:56 -0700 | [diff] [blame] | 500 | // This is a fast-path for getting/setting values in a quick frame. |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 501 | uint32_t* GetVRegAddr(StackReference<mirror::ArtMethod>* cur_quick_frame, |
| 502 | const DexFile::CodeItem* code_item, |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 503 | uint32_t core_spills, uint32_t fp_spills, size_t frame_size, |
| 504 | uint16_t vreg) const { |
Nicolas Geoffray | 42fcd98 | 2014-04-22 11:03:52 +0000 | [diff] [blame] | 505 | int offset = GetVRegOffset(code_item, core_spills, fp_spills, frame_size, vreg, kRuntimeISA); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 506 | DCHECK_EQ(cur_quick_frame, GetCurrentQuickFrame()); |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 507 | uint8_t* vreg_addr = reinterpret_cast<uint8_t*>(cur_quick_frame) + offset; |
Mathieu Chartier | 423d2a3 | 2013-09-12 17:33:56 -0700 | [diff] [blame] | 508 | return reinterpret_cast<uint32_t*>(vreg_addr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 509 | } |
| 510 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 511 | uintptr_t GetReturnPc() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 512 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 513 | void SetReturnPc(uintptr_t new_ret_pc) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 514 | |
| 515 | /* |
| 516 | * Return sp-relative offset for a Dalvik virtual register, compiler |
| 517 | * spill or Method* in bytes using Method*. |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 518 | * Note that (reg == -1) denotes an invalid Dalvik register. For the |
| 519 | * positive values, the Dalvik registers come first, followed by the |
| 520 | * Method*, followed by other special temporaries if any, followed by |
| 521 | * regular compiler temporary. As of now we only have the Method* as |
| 522 | * as a special compiler temporary. |
| 523 | * A compiler temporary can be thought of as a virtual register that |
| 524 | * does not exist in the dex but holds intermediate values to help |
| 525 | * optimizations and code generation. A special compiler temporary is |
| 526 | * one whose location in frame is well known while non-special ones |
| 527 | * do not have a requirement on location in frame as long as code |
| 528 | * generator itself knows how to access them. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 529 | * |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 530 | * +-------------------------------+ |
| 531 | * | IN[ins-1] | {Note: resides in caller's frame} |
| 532 | * | . | |
| 533 | * | IN[0] | |
| 534 | * | caller's ArtMethod | ... StackReference<ArtMethod> |
| 535 | * +===============================+ {Note: start of callee's frame} |
| 536 | * | core callee-save spill | {variable sized} |
| 537 | * +-------------------------------+ |
| 538 | * | fp callee-save spill | |
| 539 | * +-------------------------------+ |
| 540 | * | filler word | {For compatibility, if V[locals-1] used as wide |
| 541 | * +-------------------------------+ |
| 542 | * | V[locals-1] | |
| 543 | * | V[locals-2] | |
| 544 | * | . | |
| 545 | * | . | ... (reg == 2) |
| 546 | * | V[1] | ... (reg == 1) |
| 547 | * | V[0] | ... (reg == 0) <---- "locals_start" |
| 548 | * +-------------------------------+ |
| 549 | * | stack alignment padding | {0 to (kStackAlignWords-1) of padding} |
| 550 | * +-------------------------------+ |
| 551 | * | Compiler temp region | ... (reg >= max_num_special_temps) |
| 552 | * | . | |
| 553 | * | . | |
Brian Carlstrom | 2cbaccb | 2014-09-14 20:34:17 -0700 | [diff] [blame] | 554 | * | V[max_num_special_temps + 1] | |
| 555 | * | V[max_num_special_temps + 0] | |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 556 | * +-------------------------------+ |
| 557 | * | OUT[outs-1] | |
| 558 | * | OUT[outs-2] | |
| 559 | * | . | |
| 560 | * | OUT[0] | |
| 561 | * | StackReference<ArtMethod> | ... (reg == num_total_code_regs == special_temp_value) <<== sp, 16-byte aligned |
| 562 | * +===============================+ |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 563 | */ |
| 564 | static int GetVRegOffset(const DexFile::CodeItem* code_item, |
Ian Rogers | b23a772 | 2012-10-09 16:54:26 -0700 | [diff] [blame] | 565 | uint32_t core_spills, uint32_t fp_spills, |
Nicolas Geoffray | 42fcd98 | 2014-04-22 11:03:52 +0000 | [diff] [blame] | 566 | size_t frame_size, int reg, InstructionSet isa) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 567 | DCHECK_EQ(frame_size & (kStackAlignment - 1), 0U); |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 568 | DCHECK_NE(reg, -1); |
Vladimir Marko | 8194963 | 2014-05-02 11:53:22 +0100 | [diff] [blame] | 569 | int spill_size = POPCOUNT(core_spills) * GetBytesPerGprSpillLocation(isa) |
| 570 | + POPCOUNT(fp_spills) * GetBytesPerFprSpillLocation(isa) |
Nicolas Geoffray | 42fcd98 | 2014-04-22 11:03:52 +0000 | [diff] [blame] | 571 | + sizeof(uint32_t); // Filler. |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 572 | int num_regs = code_item->registers_size_ - code_item->ins_size_; |
| 573 | int temp_threshold = code_item->registers_size_; |
| 574 | const int max_num_special_temps = 1; |
| 575 | if (reg == temp_threshold) { |
Razvan A Lupusoru | da7a69b | 2014-01-08 15:09:50 -0800 | [diff] [blame] | 576 | // The current method pointer corresponds to special location on stack. |
| 577 | return 0; |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 578 | } else if (reg >= temp_threshold + max_num_special_temps) { |
Razvan A Lupusoru | da7a69b | 2014-01-08 15:09:50 -0800 | [diff] [blame] | 579 | /* |
| 580 | * Special temporaries may have custom locations and the logic above deals with that. |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 581 | * However, non-special temporaries are placed relative to the outs. |
Razvan A Lupusoru | da7a69b | 2014-01-08 15:09:50 -0800 | [diff] [blame] | 582 | */ |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 583 | int temps_start = sizeof(StackReference<mirror::ArtMethod>) + code_item->outs_size_ * sizeof(uint32_t); |
| 584 | int relative_offset = (reg - (temp_threshold + max_num_special_temps)) * sizeof(uint32_t); |
| 585 | return temps_start + relative_offset; |
Razvan A Lupusoru | da7a69b | 2014-01-08 15:09:50 -0800 | [diff] [blame] | 586 | } else if (reg < num_regs) { |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 587 | int locals_start = frame_size - spill_size - num_regs * sizeof(uint32_t); |
Razvan A Lupusoru | da7a69b | 2014-01-08 15:09:50 -0800 | [diff] [blame] | 588 | return locals_start + (reg * sizeof(uint32_t)); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 589 | } else { |
Razvan A Lupusoru | 3bc0174 | 2014-02-06 13:18:43 -0800 | [diff] [blame] | 590 | // Handle ins. |
buzbee | 8281864 | 2014-06-04 15:35:41 -0700 | [diff] [blame] | 591 | return frame_size + ((reg - num_regs) * sizeof(uint32_t)) + |
| 592 | sizeof(StackReference<mirror::ArtMethod>); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 593 | } |
| 594 | } |
| 595 | |
Nicolas Geoffray | 42fcd98 | 2014-04-22 11:03:52 +0000 | [diff] [blame] | 596 | static int GetOutVROffset(uint16_t out_num, InstructionSet isa) { |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 597 | UNUSED(isa); |
buzbee | 8281864 | 2014-06-04 15:35:41 -0700 | [diff] [blame] | 598 | // According to stack model, the first out is above the Method referernce. |
| 599 | return sizeof(StackReference<mirror::ArtMethod>) + (out_num * sizeof(uint32_t)); |
Razvan A Lupusoru | 3bc0174 | 2014-02-06 13:18:43 -0800 | [diff] [blame] | 600 | } |
| 601 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 602 | uintptr_t GetCurrentQuickFramePc() const { |
| 603 | return cur_quick_frame_pc_; |
| 604 | } |
| 605 | |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 606 | StackReference<mirror::ArtMethod>* GetCurrentQuickFrame() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 607 | return cur_quick_frame_; |
| 608 | } |
| 609 | |
| 610 | ShadowFrame* GetCurrentShadowFrame() const { |
| 611 | return cur_shadow_frame_; |
| 612 | } |
| 613 | |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 614 | HandleScope* GetCurrentHandleScope() const { |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 615 | StackReference<mirror::ArtMethod>* sp = GetCurrentQuickFrame(); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 616 | ++sp; // Skip Method*; handle scope comes next; |
| 617 | return reinterpret_cast<HandleScope*>(sp); |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 618 | } |
| 619 | |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 620 | std::string DescribeLocation() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 621 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 622 | static size_t ComputeNumFrames(Thread* thread) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 623 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 624 | static void DescribeStack(Thread* thread) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 625 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 626 | private: |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 627 | // Private constructor known in the case that num_frames_ has already been computed. |
| 628 | StackVisitor(Thread* thread, Context* context, size_t num_frames) |
| 629 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 630 | |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 631 | bool GetGPR(uint32_t reg, uintptr_t* val) const; |
| 632 | bool SetGPR(uint32_t reg, uintptr_t value); |
| 633 | bool GetFPR(uint32_t reg, uintptr_t* val) const; |
| 634 | bool SetFPR(uint32_t reg, uintptr_t value); |
| 635 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 636 | void SanityCheckFrame() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 637 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 638 | Thread* const thread_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 639 | ShadowFrame* cur_shadow_frame_; |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 640 | StackReference<mirror::ArtMethod>* cur_quick_frame_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 641 | uintptr_t cur_quick_frame_pc_; |
| 642 | // Lazily computed, number of frames in the stack. |
| 643 | size_t num_frames_; |
| 644 | // Depth of the frame we're currently at. |
| 645 | size_t cur_depth_; |
Brian Carlstrom | 0cd7ec2 | 2013-07-17 23:40:20 -0700 | [diff] [blame] | 646 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 647 | protected: |
| 648 | Context* const context_; |
| 649 | }; |
| 650 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 651 | } // namespace art |
| 652 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 653 | #endif // ART_RUNTIME_STACK_H_ |