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" |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 24 | #include "base/macros.h" |
| 25 | #include "base/mutex.h" |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 26 | #include "dex_file.h" |
Mathieu Chartier | e34fa1d | 2015-01-14 14:55:47 -0800 | [diff] [blame] | 27 | #include "gc_root.h" |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 28 | #include "quick/quick_method_frame_info.h" |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 29 | #include "read_barrier.h" |
Vladimir Marko | 3a21e38 | 2016-09-02 12:38:38 +0100 | [diff] [blame] | 30 | #include "stack_reference.h" |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 31 | #include "verify_object.h" |
| 32 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 33 | namespace art { |
| 34 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 35 | namespace mirror { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 36 | class Object; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 37 | } // namespace mirror |
| 38 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 39 | class ArtMethod; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 40 | class Context; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 41 | class HandleScope; |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 42 | class InlineInfo; |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 43 | class OatQuickMethodHeader; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 44 | class ScopedObjectAccess; |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 45 | class ShadowFrame; |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 46 | class StackVisitor; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 47 | class Thread; |
Vladimir Marko | 3a21e38 | 2016-09-02 12:38:38 +0100 | [diff] [blame] | 48 | union JValue; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 49 | |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 50 | // The kind of vreg being accessed in calls to Set/GetVReg. |
| 51 | enum VRegKind { |
| 52 | kReferenceVReg, |
| 53 | kIntVReg, |
| 54 | kFloatVReg, |
| 55 | kLongLoVReg, |
| 56 | kLongHiVReg, |
| 57 | kDoubleLoVReg, |
| 58 | kDoubleHiVReg, |
| 59 | kConstant, |
| 60 | kImpreciseConstant, |
| 61 | kUndefined, |
| 62 | }; |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 63 | std::ostream& operator<<(std::ostream& os, const VRegKind& rhs); |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 64 | |
Andreas Gampe | b302592 | 2015-09-01 14:45:00 -0700 | [diff] [blame] | 65 | // Forward declaration. Just calls the destructor. |
| 66 | struct ShadowFrameDeleter; |
| 67 | using ShadowFrameAllocaUniquePtr = std::unique_ptr<ShadowFrame, ShadowFrameDeleter>; |
| 68 | |
Mingyao Yang | 063fc77 | 2016-08-02 11:02:54 -0700 | [diff] [blame] | 69 | // Size in bytes of the should_deoptimize flag on stack. |
| 70 | // We just need 4 bytes for our purpose regardless of the architecture. Frame size |
| 71 | // calculation will automatically do alignment for the final frame size. |
| 72 | static constexpr size_t kShouldDeoptimizeFlagSize = 4; |
| 73 | |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 74 | // Counting locks by storing object pointers into a vector. Duplicate entries mark recursive locks. |
| 75 | // The vector will be visited with the ShadowFrame during GC (so all the locked-on objects are |
| 76 | // thread roots). |
| 77 | // Note: implementation is split so that the call sites may be optimized to no-ops in case no |
| 78 | // lock counting is necessary. The actual implementation is in the cc file to avoid |
| 79 | // dependencies. |
| 80 | class LockCountData { |
| 81 | public: |
| 82 | // Add the given object to the list of monitors, that is, objects that have been locked. This |
| 83 | // will not throw (but be skipped if there is an exception pending on entry). |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 84 | void AddMonitor(Thread* self, mirror::Object* obj) REQUIRES_SHARED(Locks::mutator_lock_); |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 85 | |
| 86 | // Try to remove the given object from the monitor list, indicating an unlock operation. |
| 87 | // This will throw an IllegalMonitorStateException (clearing any already pending exception), in |
| 88 | // case that there wasn't a lock recorded for the object. |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 89 | void RemoveMonitorOrThrow(Thread* self, |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 90 | const mirror::Object* obj) REQUIRES_SHARED(Locks::mutator_lock_); |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 91 | |
| 92 | // Check whether all acquired monitors have been released. This will potentially throw an |
| 93 | // IllegalMonitorStateException, clearing any already pending exception. Returns true if the |
| 94 | // check shows that everything is OK wrt/ lock counting, false otherwise. |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 95 | bool CheckAllMonitorsReleasedOrThrow(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_); |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 96 | |
| 97 | template <typename T, typename... Args> |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 98 | void VisitMonitors(T visitor, Args&&... args) REQUIRES_SHARED(Locks::mutator_lock_) { |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 99 | if (monitors_ != nullptr) { |
| 100 | // Visitors may change the Object*. Be careful with the foreach loop. |
| 101 | for (mirror::Object*& obj : *monitors_) { |
| 102 | visitor(/* inout */ &obj, std::forward<Args>(args)...); |
| 103 | } |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | private: |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 108 | // Stores references to the locked-on objects. As noted, this should be visited during thread |
| 109 | // marking. |
| 110 | std::unique_ptr<std::vector<mirror::Object*>> monitors_; |
| 111 | }; |
| 112 | |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 113 | // ShadowFrame has 2 possible layouts: |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 114 | // - interpreter - separate VRegs and reference arrays. References are in the reference array. |
| 115 | // - JNI - just VRegs, but where every VReg holds a reference. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 116 | class ShadowFrame { |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 117 | public: |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 118 | // Compute size of ShadowFrame in bytes assuming it has a reference array. |
Jeff Hao | 6613519 | 2013-05-14 11:02:41 -0700 | [diff] [blame] | 119 | static size_t ComputeSize(uint32_t num_vregs) { |
| 120 | return sizeof(ShadowFrame) + (sizeof(uint32_t) * num_vregs) + |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 121 | (sizeof(StackReference<mirror::Object>) * num_vregs); |
Jeff Hao | 6613519 | 2013-05-14 11:02:41 -0700 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | // Create ShadowFrame in heap for deoptimization. |
Christopher Ferris | 241a958 | 2015-04-27 15:19:41 -0700 | [diff] [blame] | 125 | static ShadowFrame* CreateDeoptimizedFrame(uint32_t num_vregs, ShadowFrame* link, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 126 | ArtMethod* method, uint32_t dex_pc) { |
Jeff Hao | 6613519 | 2013-05-14 11:02:41 -0700 | [diff] [blame] | 127 | uint8_t* memory = new uint8_t[ComputeSize(num_vregs)]; |
Andreas Gampe | b302592 | 2015-09-01 14:45:00 -0700 | [diff] [blame] | 128 | return CreateShadowFrameImpl(num_vregs, link, method, dex_pc, memory); |
Jeff Hao | 6613519 | 2013-05-14 11:02:41 -0700 | [diff] [blame] | 129 | } |
| 130 | |
Christopher Ferris | 241a958 | 2015-04-27 15:19:41 -0700 | [diff] [blame] | 131 | // Delete a ShadowFrame allocated on the heap for deoptimization. |
| 132 | static void DeleteDeoptimizedFrame(ShadowFrame* sf) { |
Andreas Gampe | b302592 | 2015-09-01 14:45:00 -0700 | [diff] [blame] | 133 | sf->~ShadowFrame(); // Explicitly destruct. |
Christopher Ferris | 241a958 | 2015-04-27 15:19:41 -0700 | [diff] [blame] | 134 | uint8_t* memory = reinterpret_cast<uint8_t*>(sf); |
| 135 | delete[] memory; |
| 136 | } |
| 137 | |
Andreas Gampe | b302592 | 2015-09-01 14:45:00 -0700 | [diff] [blame] | 138 | // Create a shadow frame in a fresh alloca. This needs to be in the context of the caller. |
| 139 | // Inlining doesn't work, the compiler will still undo the alloca. So this needs to be a macro. |
| 140 | #define CREATE_SHADOW_FRAME(num_vregs, link, method, dex_pc) ({ \ |
| 141 | size_t frame_size = ShadowFrame::ComputeSize(num_vregs); \ |
| 142 | void* alloca_mem = alloca(frame_size); \ |
| 143 | ShadowFrameAllocaUniquePtr( \ |
| 144 | ShadowFrame::CreateShadowFrameImpl((num_vregs), (link), (method), (dex_pc), \ |
| 145 | (alloca_mem))); \ |
| 146 | }) |
| 147 | |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 148 | ~ShadowFrame() {} |
| 149 | |
Igor Murashkin | c449e8b | 2015-06-10 15:56:42 -0700 | [diff] [blame] | 150 | // TODO(iam): Clean references array up since they're always there, |
| 151 | // we don't need to do conditionals. |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 152 | bool HasReferenceArray() const { |
Ian Rogers | 8a01a3a | 2013-05-06 13:25:44 -0700 | [diff] [blame] | 153 | return true; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 154 | } |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 155 | |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 156 | uint32_t NumberOfVRegs() const { |
Ian Rogers | 8a01a3a | 2013-05-06 13:25:44 -0700 | [diff] [blame] | 157 | return number_of_vregs_; |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 158 | } |
| 159 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 160 | uint32_t GetDexPC() const { |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 161 | return (dex_pc_ptr_ == nullptr) ? dex_pc_ : dex_pc_ptr_ - code_item_->insns_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 162 | } |
| 163 | |
Bill Buzbee | 1d011d9 | 2016-04-04 16:59:29 +0000 | [diff] [blame] | 164 | int16_t GetCachedHotnessCountdown() const { |
| 165 | return cached_hotness_countdown_; |
| 166 | } |
| 167 | |
| 168 | void SetCachedHotnessCountdown(int16_t cached_hotness_countdown) { |
| 169 | cached_hotness_countdown_ = cached_hotness_countdown; |
| 170 | } |
| 171 | |
| 172 | int16_t GetHotnessCountdown() const { |
| 173 | return hotness_countdown_; |
| 174 | } |
| 175 | |
| 176 | void SetHotnessCountdown(int16_t hotness_countdown) { |
| 177 | hotness_countdown_ = hotness_countdown; |
| 178 | } |
| 179 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 180 | void SetDexPC(uint32_t dex_pc) { |
| 181 | dex_pc_ = dex_pc; |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 182 | dex_pc_ptr_ = nullptr; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 183 | } |
| 184 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 185 | ShadowFrame* GetLink() const { |
| 186 | return link_; |
| 187 | } |
| 188 | |
| 189 | void SetLink(ShadowFrame* frame) { |
| 190 | DCHECK_NE(this, frame); |
| 191 | link_ = frame; |
| 192 | } |
| 193 | |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 194 | int32_t GetVReg(size_t i) const { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 195 | DCHECK_LT(i, NumberOfVRegs()); |
| 196 | const uint32_t* vreg = &vregs_[i]; |
| 197 | return *reinterpret_cast<const int32_t*>(vreg); |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 198 | } |
| 199 | |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 200 | uint32_t* GetVRegAddr(size_t i) { |
| 201 | return &vregs_[i]; |
| 202 | } |
| 203 | |
| 204 | uint32_t* GetShadowRefAddr(size_t i) { |
| 205 | DCHECK(HasReferenceArray()); |
| 206 | DCHECK_LT(i, NumberOfVRegs()); |
| 207 | return &vregs_[i + NumberOfVRegs()]; |
| 208 | } |
| 209 | |
| 210 | void SetCodeItem(const DexFile::CodeItem* code_item) { |
| 211 | code_item_ = code_item; |
| 212 | } |
| 213 | |
Bill Buzbee | d47fd90 | 2016-07-07 14:42:43 +0000 | [diff] [blame] | 214 | const DexFile::CodeItem* GetCodeItem() const { |
| 215 | return code_item_; |
| 216 | } |
| 217 | |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 218 | float GetVRegFloat(size_t i) const { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 219 | DCHECK_LT(i, NumberOfVRegs()); |
| 220 | // NOTE: Strict-aliasing? |
| 221 | const uint32_t* vreg = &vregs_[i]; |
| 222 | return *reinterpret_cast<const float*>(vreg); |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | int64_t GetVRegLong(size_t i) const { |
Sebastien Hertz | 807a256 | 2013-04-15 09:33:39 +0200 | [diff] [blame] | 226 | DCHECK_LT(i, NumberOfVRegs()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 227 | const uint32_t* vreg = &vregs_[i]; |
Jeff Hao | e47637c | 2013-09-19 15:13:16 -0700 | [diff] [blame] | 228 | typedef const int64_t unaligned_int64 __attribute__ ((aligned (4))); |
| 229 | return *reinterpret_cast<unaligned_int64*>(vreg); |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | double GetVRegDouble(size_t i) const { |
Sebastien Hertz | 807a256 | 2013-04-15 09:33:39 +0200 | [diff] [blame] | 233 | DCHECK_LT(i, NumberOfVRegs()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 234 | const uint32_t* vreg = &vregs_[i]; |
Jeff Hao | e47637c | 2013-09-19 15:13:16 -0700 | [diff] [blame] | 235 | typedef const double unaligned_double __attribute__ ((aligned (4))); |
| 236 | return *reinterpret_cast<unaligned_double*>(vreg); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 237 | } |
| 238 | |
Igor Murashkin | c449e8b | 2015-06-10 15:56:42 -0700 | [diff] [blame] | 239 | // Look up the reference given its virtual register number. |
| 240 | // If this returns non-null then this does not mean the vreg is currently a reference |
| 241 | // on non-moving collectors. Check that the raw reg with GetVReg is equal to this if not certain. |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 242 | template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 243 | mirror::Object* GetVRegReference(size_t i) const REQUIRES_SHARED(Locks::mutator_lock_) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 244 | DCHECK_LT(i, NumberOfVRegs()); |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 245 | mirror::Object* ref; |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 246 | if (HasReferenceArray()) { |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 247 | ref = References()[i].AsMirrorPtr(); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 248 | } else { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 249 | const uint32_t* vreg_ptr = &vregs_[i]; |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 250 | ref = reinterpret_cast<const StackReference<mirror::Object>*>(vreg_ptr)->AsMirrorPtr(); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 251 | } |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 252 | if (kUseReadBarrier) { |
| 253 | ReadBarrier::AssertToSpaceInvariant(ref); |
| 254 | } |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 255 | if (kVerifyFlags & kVerifyReads) { |
| 256 | VerifyObject(ref); |
| 257 | } |
| 258 | return ref; |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 259 | } |
| 260 | |
Jeff Hao | 1674363 | 2013-05-08 10:59:04 -0700 | [diff] [blame] | 261 | // Get view of vregs as range of consecutive arguments starting at i. |
| 262 | uint32_t* GetVRegArgs(size_t i) { |
| 263 | return &vregs_[i]; |
| 264 | } |
| 265 | |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 266 | void SetVReg(size_t i, int32_t val) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 267 | DCHECK_LT(i, NumberOfVRegs()); |
| 268 | uint32_t* vreg = &vregs_[i]; |
| 269 | *reinterpret_cast<int32_t*>(vreg) = val; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 270 | // This is needed for moving collectors since these can update the vreg references if they |
| 271 | // happen to agree with references in the reference array. |
| 272 | if (kMovingCollector && HasReferenceArray()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 273 | References()[i].Clear(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 274 | } |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 275 | } |
| 276 | |
| 277 | void SetVRegFloat(size_t i, float val) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 278 | DCHECK_LT(i, NumberOfVRegs()); |
| 279 | uint32_t* vreg = &vregs_[i]; |
| 280 | *reinterpret_cast<float*>(vreg) = val; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 281 | // This is needed for moving collectors since these can update the vreg references if they |
| 282 | // happen to agree with references in the reference array. |
| 283 | if (kMovingCollector && HasReferenceArray()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 284 | References()[i].Clear(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 285 | } |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | void SetVRegLong(size_t i, int64_t val) { |
Sebastien Hertz | 807a256 | 2013-04-15 09:33:39 +0200 | [diff] [blame] | 289 | DCHECK_LT(i, NumberOfVRegs()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 290 | uint32_t* vreg = &vregs_[i]; |
Jeff Hao | e47637c | 2013-09-19 15:13:16 -0700 | [diff] [blame] | 291 | typedef int64_t unaligned_int64 __attribute__ ((aligned (4))); |
| 292 | *reinterpret_cast<unaligned_int64*>(vreg) = val; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 293 | // This is needed for moving collectors since these can update the vreg references if they |
| 294 | // happen to agree with references in the reference array. |
| 295 | if (kMovingCollector && HasReferenceArray()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 296 | References()[i].Clear(); |
| 297 | References()[i + 1].Clear(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 298 | } |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 299 | } |
| 300 | |
| 301 | void SetVRegDouble(size_t i, double val) { |
Sebastien Hertz | 807a256 | 2013-04-15 09:33:39 +0200 | [diff] [blame] | 302 | DCHECK_LT(i, NumberOfVRegs()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 303 | uint32_t* vreg = &vregs_[i]; |
Jeff Hao | e47637c | 2013-09-19 15:13:16 -0700 | [diff] [blame] | 304 | typedef double unaligned_double __attribute__ ((aligned (4))); |
| 305 | *reinterpret_cast<unaligned_double*>(vreg) = val; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 306 | // This is needed for moving collectors since these can update the vreg references if they |
| 307 | // happen to agree with references in the reference array. |
| 308 | if (kMovingCollector && HasReferenceArray()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 309 | References()[i].Clear(); |
| 310 | References()[i + 1].Clear(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 311 | } |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 312 | } |
| 313 | |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 314 | template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 315 | void SetVRegReference(size_t i, mirror::Object* val) REQUIRES_SHARED(Locks::mutator_lock_) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 316 | DCHECK_LT(i, NumberOfVRegs()); |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 317 | if (kVerifyFlags & kVerifyWrites) { |
| 318 | VerifyObject(val); |
| 319 | } |
Hiroshi Yamauchi | 2cd334a | 2015-01-09 14:03:35 -0800 | [diff] [blame] | 320 | if (kUseReadBarrier) { |
| 321 | ReadBarrier::AssertToSpaceInvariant(val); |
| 322 | } |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 323 | uint32_t* vreg = &vregs_[i]; |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 324 | reinterpret_cast<StackReference<mirror::Object>*>(vreg)->Assign(val); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 325 | if (HasReferenceArray()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 326 | References()[i].Assign(val); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 327 | } |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 328 | } |
| 329 | |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 330 | void SetMethod(ArtMethod* method) REQUIRES(Locks::mutator_lock_) { |
| 331 | DCHECK(method != nullptr); |
| 332 | DCHECK(method_ != nullptr); |
| 333 | method_ = method; |
| 334 | } |
| 335 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 336 | ArtMethod* GetMethod() const REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 337 | DCHECK(method_ != nullptr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 338 | return method_; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 339 | } |
| 340 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 341 | mirror::Object* GetThisObject() const REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 342 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 343 | mirror::Object* GetThisObject(uint16_t num_ins) const REQUIRES_SHARED(Locks::mutator_lock_); |
Jeff Hao | e701f48 | 2013-05-24 11:50:49 -0700 | [diff] [blame] | 344 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 345 | bool Contains(StackReference<mirror::Object>* shadow_frame_entry_obj) const { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 346 | if (HasReferenceArray()) { |
| 347 | return ((&References()[0] <= shadow_frame_entry_obj) && |
| 348 | (shadow_frame_entry_obj <= (&References()[NumberOfVRegs() - 1]))); |
| 349 | } else { |
| 350 | uint32_t* shadow_frame_entry = reinterpret_cast<uint32_t*>(shadow_frame_entry_obj); |
| 351 | return ((&vregs_[0] <= shadow_frame_entry) && |
| 352 | (shadow_frame_entry <= (&vregs_[NumberOfVRegs() - 1]))); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 353 | } |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 354 | } |
| 355 | |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 356 | LockCountData& GetLockCountData() { |
| 357 | return lock_count_data_; |
| 358 | } |
| 359 | |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 360 | static size_t LockCountDataOffset() { |
| 361 | return OFFSETOF_MEMBER(ShadowFrame, lock_count_data_); |
| 362 | } |
| 363 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 364 | static size_t LinkOffset() { |
| 365 | return OFFSETOF_MEMBER(ShadowFrame, link_); |
| 366 | } |
| 367 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 368 | static size_t MethodOffset() { |
| 369 | return OFFSETOF_MEMBER(ShadowFrame, method_); |
| 370 | } |
| 371 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 372 | static size_t DexPCOffset() { |
| 373 | return OFFSETOF_MEMBER(ShadowFrame, dex_pc_); |
| 374 | } |
| 375 | |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 376 | static size_t NumberOfVRegsOffset() { |
| 377 | return OFFSETOF_MEMBER(ShadowFrame, number_of_vregs_); |
| 378 | } |
| 379 | |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 380 | static size_t VRegsOffset() { |
| 381 | return OFFSETOF_MEMBER(ShadowFrame, vregs_); |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 382 | } |
| 383 | |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 384 | static size_t ResultRegisterOffset() { |
| 385 | return OFFSETOF_MEMBER(ShadowFrame, result_register_); |
| 386 | } |
| 387 | |
| 388 | static size_t DexPCPtrOffset() { |
| 389 | return OFFSETOF_MEMBER(ShadowFrame, dex_pc_ptr_); |
| 390 | } |
| 391 | |
| 392 | static size_t CodeItemOffset() { |
| 393 | return OFFSETOF_MEMBER(ShadowFrame, code_item_); |
| 394 | } |
| 395 | |
Bill Buzbee | 1d011d9 | 2016-04-04 16:59:29 +0000 | [diff] [blame] | 396 | static size_t CachedHotnessCountdownOffset() { |
| 397 | return OFFSETOF_MEMBER(ShadowFrame, cached_hotness_countdown_); |
| 398 | } |
| 399 | |
| 400 | static size_t HotnessCountdownOffset() { |
| 401 | return OFFSETOF_MEMBER(ShadowFrame, hotness_countdown_); |
| 402 | } |
| 403 | |
Andreas Gampe | b302592 | 2015-09-01 14:45:00 -0700 | [diff] [blame] | 404 | // Create ShadowFrame for interpreter using provided memory. |
| 405 | static ShadowFrame* CreateShadowFrameImpl(uint32_t num_vregs, |
| 406 | ShadowFrame* link, |
| 407 | ArtMethod* method, |
| 408 | uint32_t dex_pc, |
| 409 | void* memory) { |
| 410 | return new (memory) ShadowFrame(num_vregs, link, method, dex_pc, true); |
| 411 | } |
| 412 | |
Bill Buzbee | 1d011d9 | 2016-04-04 16:59:29 +0000 | [diff] [blame] | 413 | const uint16_t* GetDexPCPtr() { |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 414 | return dex_pc_ptr_; |
| 415 | } |
| 416 | |
Bill Buzbee | d47fd90 | 2016-07-07 14:42:43 +0000 | [diff] [blame] | 417 | void SetDexPCPtr(uint16_t* dex_pc_ptr) { |
| 418 | dex_pc_ptr_ = dex_pc_ptr; |
| 419 | } |
| 420 | |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 421 | JValue* GetResultRegister() { |
| 422 | return result_register_; |
| 423 | } |
| 424 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 425 | private: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 426 | ShadowFrame(uint32_t num_vregs, ShadowFrame* link, ArtMethod* method, |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 427 | uint32_t dex_pc, bool has_reference_array) |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 428 | : link_(link), method_(method), result_register_(nullptr), dex_pc_ptr_(nullptr), |
| 429 | code_item_(nullptr), number_of_vregs_(num_vregs), dex_pc_(dex_pc) { |
Igor Murashkin | c449e8b | 2015-06-10 15:56:42 -0700 | [diff] [blame] | 430 | // TODO(iam): Remove this parameter, it's an an artifact of portable removal |
| 431 | DCHECK(has_reference_array); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 432 | if (has_reference_array) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 433 | memset(vregs_, 0, num_vregs * (sizeof(uint32_t) + sizeof(StackReference<mirror::Object>))); |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 434 | } else { |
Jeff Hao | e701f48 | 2013-05-24 11:50:49 -0700 | [diff] [blame] | 435 | memset(vregs_, 0, num_vregs * sizeof(uint32_t)); |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 436 | } |
| 437 | } |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 438 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 439 | const StackReference<mirror::Object>* References() const { |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 440 | DCHECK(HasReferenceArray()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 441 | const uint32_t* vreg_end = &vregs_[NumberOfVRegs()]; |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 442 | return reinterpret_cast<const StackReference<mirror::Object>*>(vreg_end); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 443 | } |
| 444 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 445 | StackReference<mirror::Object>* References() { |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 446 | return const_cast<StackReference<mirror::Object>*>( |
| 447 | const_cast<const ShadowFrame*>(this)->References()); |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 448 | } |
| 449 | |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 450 | // Link to previous shadow frame or null. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 451 | ShadowFrame* link_; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 452 | ArtMethod* method_; |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 453 | JValue* result_register_; |
Bill Buzbee | 1d011d9 | 2016-04-04 16:59:29 +0000 | [diff] [blame] | 454 | const uint16_t* dex_pc_ptr_; |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 455 | const DexFile::CodeItem* code_item_; |
Andreas Gampe | 03ec930 | 2015-08-27 17:41:47 -0700 | [diff] [blame] | 456 | LockCountData lock_count_data_; // This may contain GC roots when lock counting is active. |
buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame] | 457 | const uint32_t number_of_vregs_; |
| 458 | uint32_t dex_pc_; |
Bill Buzbee | 1d011d9 | 2016-04-04 16:59:29 +0000 | [diff] [blame] | 459 | int16_t cached_hotness_countdown_; |
| 460 | int16_t hotness_countdown_; |
Igor Murashkin | c449e8b | 2015-06-10 15:56:42 -0700 | [diff] [blame] | 461 | |
| 462 | // This is a two-part array: |
| 463 | // - [0..number_of_vregs) holds the raw virtual registers, and each element here is always 4 |
| 464 | // bytes. |
| 465 | // - [number_of_vregs..number_of_vregs*2) holds only reference registers. Each element here is |
| 466 | // ptr-sized. |
| 467 | // In other words when a primitive is stored in vX, the second (reference) part of the array will |
| 468 | // be null. When a reference is stored in vX, the second (reference) part of the array will be a |
| 469 | // copy of vX. |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 470 | uint32_t vregs_[0]; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 471 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 472 | DISALLOW_IMPLICIT_CONSTRUCTORS(ShadowFrame); |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 473 | }; |
| 474 | |
Andreas Gampe | b302592 | 2015-09-01 14:45:00 -0700 | [diff] [blame] | 475 | struct ShadowFrameDeleter { |
| 476 | inline void operator()(ShadowFrame* frame) { |
| 477 | if (frame != nullptr) { |
| 478 | frame->~ShadowFrame(); |
| 479 | } |
| 480 | } |
| 481 | }; |
| 482 | |
Andreas Gampe | 140da3b | 2016-11-08 16:01:00 -0800 | [diff] [blame] | 483 | class JavaFrameRootInfo FINAL : public RootInfo { |
Mathieu Chartier | e34fa1d | 2015-01-14 14:55:47 -0800 | [diff] [blame] | 484 | public: |
| 485 | JavaFrameRootInfo(uint32_t thread_id, const StackVisitor* stack_visitor, size_t vreg) |
| 486 | : RootInfo(kRootJavaFrame, thread_id), stack_visitor_(stack_visitor), vreg_(vreg) { |
| 487 | } |
Andreas Gampe | 140da3b | 2016-11-08 16:01:00 -0800 | [diff] [blame] | 488 | void Describe(std::ostream& os) const OVERRIDE |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 489 | REQUIRES_SHARED(Locks::mutator_lock_); |
Mathieu Chartier | e34fa1d | 2015-01-14 14:55:47 -0800 | [diff] [blame] | 490 | |
Andreas Gampe | 140da3b | 2016-11-08 16:01:00 -0800 | [diff] [blame] | 491 | size_t GetVReg() const { |
| 492 | return vreg_; |
| 493 | } |
| 494 | const StackVisitor* GetVisitor() const { |
| 495 | return stack_visitor_; |
| 496 | } |
| 497 | |
Mathieu Chartier | e34fa1d | 2015-01-14 14:55:47 -0800 | [diff] [blame] | 498 | private: |
| 499 | const StackVisitor* const stack_visitor_; |
| 500 | const size_t vreg_; |
| 501 | }; |
| 502 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 503 | // The managed stack is used to record fragments of managed code stacks. Managed code stacks |
| 504 | // may either be shadow frames or lists of frames using fixed frame sizes. Transition records are |
| 505 | // necessary for transitions between code using different frame layouts and transitions into native |
| 506 | // code. |
Ian Rogers | df1ce91 | 2012-11-27 17:07:11 -0800 | [diff] [blame] | 507 | class PACKED(4) ManagedStack { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 508 | public: |
Ian Rogers | ca19066 | 2012-06-26 15:45:57 -0700 | [diff] [blame] | 509 | ManagedStack() |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 510 | : top_quick_frame_(nullptr), link_(nullptr), top_shadow_frame_(nullptr) {} |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 511 | |
| 512 | void PushManagedStackFragment(ManagedStack* fragment) { |
| 513 | // Copy this top fragment into given fragment. |
| 514 | memcpy(fragment, this, sizeof(ManagedStack)); |
| 515 | // Clear this fragment, which has become the top. |
| 516 | memset(this, 0, sizeof(ManagedStack)); |
| 517 | // Link our top fragment onto the given fragment. |
| 518 | link_ = fragment; |
| 519 | } |
| 520 | |
| 521 | void PopManagedStackFragment(const ManagedStack& fragment) { |
| 522 | DCHECK(&fragment == link_); |
| 523 | // Copy this given fragment back to the top. |
| 524 | memcpy(this, &fragment, sizeof(ManagedStack)); |
| 525 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 526 | |
| 527 | ManagedStack* GetLink() const { |
| 528 | return link_; |
| 529 | } |
| 530 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 531 | ArtMethod** GetTopQuickFrame() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 532 | return top_quick_frame_; |
| 533 | } |
| 534 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 535 | void SetTopQuickFrame(ArtMethod** top) { |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 536 | DCHECK(top_shadow_frame_ == nullptr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 537 | top_quick_frame_ = top; |
| 538 | } |
| 539 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 540 | static size_t TopQuickFrameOffset() { |
| 541 | return OFFSETOF_MEMBER(ManagedStack, top_quick_frame_); |
| 542 | } |
| 543 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 544 | ShadowFrame* PushShadowFrame(ShadowFrame* new_top_frame) { |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 545 | DCHECK(top_quick_frame_ == nullptr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 546 | ShadowFrame* old_frame = top_shadow_frame_; |
| 547 | top_shadow_frame_ = new_top_frame; |
| 548 | new_top_frame->SetLink(old_frame); |
| 549 | return old_frame; |
| 550 | } |
| 551 | |
| 552 | ShadowFrame* PopShadowFrame() { |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 553 | DCHECK(top_quick_frame_ == nullptr); |
| 554 | CHECK(top_shadow_frame_ != nullptr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 555 | ShadowFrame* frame = top_shadow_frame_; |
| 556 | top_shadow_frame_ = frame->GetLink(); |
| 557 | return frame; |
| 558 | } |
| 559 | |
| 560 | ShadowFrame* GetTopShadowFrame() const { |
| 561 | return top_shadow_frame_; |
| 562 | } |
| 563 | |
Jeff Hao | 11ffc2d | 2013-02-01 11:52:17 -0800 | [diff] [blame] | 564 | void SetTopShadowFrame(ShadowFrame* top) { |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 565 | DCHECK(top_quick_frame_ == nullptr); |
Jeff Hao | 11ffc2d | 2013-02-01 11:52:17 -0800 | [diff] [blame] | 566 | top_shadow_frame_ = top; |
| 567 | } |
| 568 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 569 | static size_t TopShadowFrameOffset() { |
| 570 | return OFFSETOF_MEMBER(ManagedStack, top_shadow_frame_); |
| 571 | } |
| 572 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 573 | size_t NumJniShadowFrameReferences() const REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 574 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 575 | bool ShadowFramesContain(StackReference<mirror::Object>* shadow_frame_entry) const; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 576 | |
| 577 | private: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 578 | ArtMethod** top_quick_frame_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 579 | ManagedStack* link_; |
| 580 | ShadowFrame* top_shadow_frame_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 581 | }; |
| 582 | |
| 583 | class StackVisitor { |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 584 | public: |
| 585 | // This enum defines a flag to control whether inlined frames are included |
| 586 | // when walking the stack. |
| 587 | enum class StackWalkKind { |
| 588 | kIncludeInlinedFrames, |
| 589 | kSkipInlinedFrames, |
| 590 | }; |
| 591 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 592 | protected: |
Hiroshi Yamauchi | 02f365f | 2017-02-03 15:06:00 -0800 | [diff] [blame] | 593 | StackVisitor(Thread* thread, |
| 594 | Context* context, |
| 595 | StackWalkKind walk_kind, |
| 596 | bool check_suspended = true); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 597 | |
Nicolas Geoffray | 3385650 | 2015-10-20 15:52:58 +0100 | [diff] [blame] | 598 | bool GetRegisterIfAccessible(uint32_t reg, VRegKind kind, uint32_t* val) const |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 599 | REQUIRES_SHARED(Locks::mutator_lock_); |
Nicolas Geoffray | 3385650 | 2015-10-20 15:52:58 +0100 | [diff] [blame] | 600 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 601 | public: |
| 602 | virtual ~StackVisitor() {} |
| 603 | |
| 604 | // Return 'true' if we should continue to visit more frames, 'false' to stop. |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 605 | virtual bool VisitFrame() REQUIRES_SHARED(Locks::mutator_lock_) = 0; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 606 | |
Andreas Gampe | 585da95 | 2016-12-02 14:52:29 -0800 | [diff] [blame] | 607 | enum class CountTransitions { |
| 608 | kYes, |
| 609 | kNo, |
| 610 | }; |
| 611 | |
| 612 | template <CountTransitions kCount = CountTransitions::kYes> |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 613 | void WalkStack(bool include_transitions = false) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 614 | REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 615 | |
Sebastien Hertz | 26f7286 | 2015-09-15 09:52:07 +0200 | [diff] [blame] | 616 | Thread* GetThread() const { |
| 617 | return thread_; |
| 618 | } |
| 619 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 620 | ArtMethod* GetMethod() const REQUIRES_SHARED(Locks::mutator_lock_); |
Hiroshi Yamauchi | 92d1a66 | 2014-05-15 21:43:59 -0700 | [diff] [blame] | 621 | |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 622 | // Sets this stack frame's method pointer. This requires a full lock of the MutatorLock. This |
| 623 | // doesn't work with inlined methods. |
| 624 | void SetMethod(ArtMethod* method) REQUIRES(Locks::mutator_lock_); |
| 625 | |
Nicolas Geoffray | ccc6197 | 2015-10-01 14:34:20 +0100 | [diff] [blame] | 626 | ArtMethod* GetOuterMethod() const { |
| 627 | return *GetCurrentQuickFrame(); |
| 628 | } |
| 629 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 630 | bool IsShadowFrame() const { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 631 | return cur_shadow_frame_ != nullptr; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 632 | } |
| 633 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 634 | uint32_t GetDexPc(bool abort_on_failure = true) const REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 635 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 636 | mirror::Object* GetThisObject() const REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 637 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 638 | size_t GetNativePcOffset() const REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 639 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 640 | // Returns the height of the stack in the managed stack frames, including transitions. |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 641 | size_t GetFrameHeight() REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 642 | return GetNumFrames() - cur_depth_ - 1; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 643 | } |
| 644 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 645 | // Returns a frame ID for JDWP use, starting from 1. |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 646 | size_t GetFrameId() REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 647 | return GetFrameHeight() + 1; |
| 648 | } |
| 649 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 650 | size_t GetNumFrames() REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 651 | if (num_frames_ == 0) { |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 652 | num_frames_ = ComputeNumFrames(thread_, walk_kind_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 653 | } |
| 654 | return num_frames_; |
| 655 | } |
| 656 | |
Andreas Gampe | 140da3b | 2016-11-08 16:01:00 -0800 | [diff] [blame] | 657 | size_t GetFrameDepth() const REQUIRES_SHARED(Locks::mutator_lock_) { |
Hiroshi Yamauchi | 649278c | 2014-08-13 11:12:22 -0700 | [diff] [blame] | 658 | return cur_depth_; |
| 659 | } |
| 660 | |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 661 | // Get the method and dex pc immediately after the one that's currently being visited. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 662 | bool GetNextMethodAndDexPc(ArtMethod** next_method, uint32_t* next_dex_pc) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 663 | REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 664 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 665 | bool GetVReg(ArtMethod* m, uint16_t vreg, VRegKind kind, uint32_t* val) const |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 666 | REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 667 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 668 | bool GetVRegPair(ArtMethod* m, uint16_t vreg, VRegKind kind_lo, VRegKind kind_hi, |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 669 | uint64_t* val) const |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 670 | REQUIRES_SHARED(Locks::mutator_lock_); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 671 | |
Mingyao Yang | 636b925 | 2015-07-31 16:40:24 -0700 | [diff] [blame] | 672 | // Values will be set in debugger shadow frames. Debugger will make sure deoptimization |
| 673 | // is triggered to make the values effective. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 674 | bool SetVReg(ArtMethod* m, uint16_t vreg, uint32_t new_value, VRegKind kind) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 675 | REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 676 | |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 677 | // Values will be set in debugger shadow frames. Debugger will make sure deoptimization |
| 678 | // is triggered to make the values effective. |
Mingyao Yang | 636b925 | 2015-07-31 16:40:24 -0700 | [diff] [blame] | 679 | bool SetVRegPair(ArtMethod* m, |
| 680 | uint16_t vreg, |
| 681 | uint64_t new_value, |
| 682 | VRegKind kind_lo, |
| 683 | VRegKind kind_hi) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 684 | REQUIRES_SHARED(Locks::mutator_lock_); |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 685 | |
Mathieu Chartier | 815873e | 2014-02-13 18:02:13 -0800 | [diff] [blame] | 686 | uintptr_t* GetGPRAddress(uint32_t reg) const; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 687 | |
Mathieu Chartier | 423d2a3 | 2013-09-12 17:33:56 -0700 | [diff] [blame] | 688 | // This is a fast-path for getting/setting values in a quick frame. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 689 | uint32_t* GetVRegAddrFromQuickCode(ArtMethod** cur_quick_frame, |
Nicolas Geoffray | 15b9d52 | 2015-03-12 15:05:13 +0000 | [diff] [blame] | 690 | const DexFile::CodeItem* code_item, |
| 691 | uint32_t core_spills, uint32_t fp_spills, size_t frame_size, |
| 692 | uint16_t vreg) const { |
| 693 | int offset = GetVRegOffsetFromQuickCode( |
| 694 | code_item, core_spills, fp_spills, frame_size, vreg, kRuntimeISA); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 695 | DCHECK_EQ(cur_quick_frame, GetCurrentQuickFrame()); |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 696 | uint8_t* vreg_addr = reinterpret_cast<uint8_t*>(cur_quick_frame) + offset; |
Mathieu Chartier | 423d2a3 | 2013-09-12 17:33:56 -0700 | [diff] [blame] | 697 | return reinterpret_cast<uint32_t*>(vreg_addr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 698 | } |
| 699 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 700 | uintptr_t GetReturnPc() const REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 701 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 702 | void SetReturnPc(uintptr_t new_ret_pc) REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 703 | |
| 704 | /* |
| 705 | * Return sp-relative offset for a Dalvik virtual register, compiler |
| 706 | * spill or Method* in bytes using Method*. |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 707 | * Note that (reg == -1) denotes an invalid Dalvik register. For the |
| 708 | * positive values, the Dalvik registers come first, followed by the |
| 709 | * Method*, followed by other special temporaries if any, followed by |
| 710 | * regular compiler temporary. As of now we only have the Method* as |
| 711 | * as a special compiler temporary. |
| 712 | * A compiler temporary can be thought of as a virtual register that |
| 713 | * does not exist in the dex but holds intermediate values to help |
| 714 | * optimizations and code generation. A special compiler temporary is |
| 715 | * one whose location in frame is well known while non-special ones |
| 716 | * do not have a requirement on location in frame as long as code |
| 717 | * generator itself knows how to access them. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 718 | * |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 719 | * +-------------------------------+ |
| 720 | * | IN[ins-1] | {Note: resides in caller's frame} |
| 721 | * | . | |
| 722 | * | IN[0] | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 723 | * | caller's ArtMethod | ... ArtMethod* |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 724 | * +===============================+ {Note: start of callee's frame} |
| 725 | * | core callee-save spill | {variable sized} |
| 726 | * +-------------------------------+ |
| 727 | * | fp callee-save spill | |
| 728 | * +-------------------------------+ |
| 729 | * | filler word | {For compatibility, if V[locals-1] used as wide |
| 730 | * +-------------------------------+ |
| 731 | * | V[locals-1] | |
| 732 | * | V[locals-2] | |
| 733 | * | . | |
| 734 | * | . | ... (reg == 2) |
| 735 | * | V[1] | ... (reg == 1) |
| 736 | * | V[0] | ... (reg == 0) <---- "locals_start" |
| 737 | * +-------------------------------+ |
| 738 | * | stack alignment padding | {0 to (kStackAlignWords-1) of padding} |
| 739 | * +-------------------------------+ |
| 740 | * | Compiler temp region | ... (reg >= max_num_special_temps) |
| 741 | * | . | |
| 742 | * | . | |
Brian Carlstrom | 2cbaccb | 2014-09-14 20:34:17 -0700 | [diff] [blame] | 743 | * | V[max_num_special_temps + 1] | |
| 744 | * | V[max_num_special_temps + 0] | |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 745 | * +-------------------------------+ |
| 746 | * | OUT[outs-1] | |
| 747 | * | OUT[outs-2] | |
| 748 | * | . | |
| 749 | * | OUT[0] | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 750 | * | ArtMethod* | ... (reg == num_total_code_regs == special_temp_value) <<== sp, 16-byte aligned |
Razvan A Lupusoru | 8d0d03e | 2014-06-06 17:04:52 -0700 | [diff] [blame] | 751 | * +===============================+ |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 752 | */ |
Nicolas Geoffray | 15b9d52 | 2015-03-12 15:05:13 +0000 | [diff] [blame] | 753 | static int GetVRegOffsetFromQuickCode(const DexFile::CodeItem* code_item, |
| 754 | uint32_t core_spills, uint32_t fp_spills, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 755 | size_t frame_size, int reg, InstructionSet isa); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 756 | |
Nicolas Geoffray | 42fcd98 | 2014-04-22 11:03:52 +0000 | [diff] [blame] | 757 | static int GetOutVROffset(uint16_t out_num, InstructionSet isa) { |
buzbee | 8281864 | 2014-06-04 15:35:41 -0700 | [diff] [blame] | 758 | // According to stack model, the first out is above the Method referernce. |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 759 | return static_cast<size_t>(InstructionSetPointerSize(isa)) + out_num * sizeof(uint32_t); |
Razvan A Lupusoru | 3bc0174 | 2014-02-06 13:18:43 -0800 | [diff] [blame] | 760 | } |
| 761 | |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 762 | bool IsInInlinedFrame() const { |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 763 | return current_inlining_depth_ != 0; |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 764 | } |
| 765 | |
David Brazdil | efc3f02 | 2015-10-28 12:19:06 -0500 | [diff] [blame] | 766 | size_t GetCurrentInliningDepth() const { |
| 767 | return current_inlining_depth_; |
| 768 | } |
| 769 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 770 | uintptr_t GetCurrentQuickFramePc() const { |
| 771 | return cur_quick_frame_pc_; |
| 772 | } |
| 773 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 774 | ArtMethod** GetCurrentQuickFrame() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 775 | return cur_quick_frame_; |
| 776 | } |
| 777 | |
| 778 | ShadowFrame* GetCurrentShadowFrame() const { |
| 779 | return cur_shadow_frame_; |
| 780 | } |
| 781 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 782 | HandleScope* GetCurrentHandleScope(size_t pointer_size) const { |
| 783 | ArtMethod** sp = GetCurrentQuickFrame(); |
| 784 | // Skip ArtMethod*; handle scope comes next; |
| 785 | return reinterpret_cast<HandleScope*>(reinterpret_cast<uintptr_t>(sp) + pointer_size); |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 786 | } |
| 787 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 788 | std::string DescribeLocation() const REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 789 | |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 790 | static size_t ComputeNumFrames(Thread* thread, StackWalkKind walk_kind) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 791 | REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 792 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 793 | static void DescribeStack(Thread* thread) REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 794 | |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 795 | const OatQuickMethodHeader* GetCurrentOatQuickMethodHeader() const { |
| 796 | return cur_oat_quick_method_header_; |
| 797 | } |
| 798 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 799 | QuickMethodFrameInfo GetCurrentQuickFrameInfo() const REQUIRES_SHARED(Locks::mutator_lock_); |
Nicolas Geoffray | 6bc4374 | 2015-10-12 18:11:10 +0100 | [diff] [blame] | 800 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 801 | private: |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 802 | // Private constructor known in the case that num_frames_ has already been computed. |
Hiroshi Yamauchi | 02f365f | 2017-02-03 15:06:00 -0800 | [diff] [blame] | 803 | StackVisitor(Thread* thread, |
| 804 | Context* context, |
| 805 | StackWalkKind walk_kind, |
| 806 | size_t num_frames, |
| 807 | bool check_suspended = true) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 808 | REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 809 | |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame] | 810 | bool IsAccessibleRegister(uint32_t reg, bool is_float) const { |
| 811 | return is_float ? IsAccessibleFPR(reg) : IsAccessibleGPR(reg); |
| 812 | } |
| 813 | uintptr_t GetRegister(uint32_t reg, bool is_float) const { |
| 814 | DCHECK(IsAccessibleRegister(reg, is_float)); |
| 815 | return is_float ? GetFPR(reg) : GetGPR(reg); |
| 816 | } |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame] | 817 | |
| 818 | bool IsAccessibleGPR(uint32_t reg) const; |
| 819 | uintptr_t GetGPR(uint32_t reg) const; |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame] | 820 | |
| 821 | bool IsAccessibleFPR(uint32_t reg) const; |
| 822 | uintptr_t GetFPR(uint32_t reg) const; |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 823 | |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 824 | bool GetVRegFromDebuggerShadowFrame(uint16_t vreg, VRegKind kind, uint32_t* val) const |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 825 | REQUIRES_SHARED(Locks::mutator_lock_); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 826 | bool GetVRegFromOptimizedCode(ArtMethod* m, uint16_t vreg, VRegKind kind, |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 827 | uint32_t* val) const |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 828 | REQUIRES_SHARED(Locks::mutator_lock_); |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 829 | |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 830 | bool GetVRegPairFromDebuggerShadowFrame(uint16_t vreg, VRegKind kind_lo, VRegKind kind_hi, |
| 831 | uint64_t* val) const |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 832 | REQUIRES_SHARED(Locks::mutator_lock_); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 833 | bool GetVRegPairFromOptimizedCode(ArtMethod* m, uint16_t vreg, |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 834 | VRegKind kind_lo, VRegKind kind_hi, |
| 835 | uint64_t* val) const |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 836 | REQUIRES_SHARED(Locks::mutator_lock_); |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 837 | bool GetRegisterPairIfAccessible(uint32_t reg_lo, uint32_t reg_hi, VRegKind kind_lo, |
| 838 | uint64_t* val) const |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 839 | REQUIRES_SHARED(Locks::mutator_lock_); |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 840 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 841 | void SanityCheckFrame() const REQUIRES_SHARED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 842 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 843 | InlineInfo GetCurrentInlineInfo() const REQUIRES_SHARED(Locks::mutator_lock_); |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 844 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 845 | Thread* const thread_; |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 846 | const StackWalkKind walk_kind_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 847 | ShadowFrame* cur_shadow_frame_; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 848 | ArtMethod** cur_quick_frame_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 849 | uintptr_t cur_quick_frame_pc_; |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 850 | const OatQuickMethodHeader* cur_oat_quick_method_header_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 851 | // Lazily computed, number of frames in the stack. |
| 852 | size_t num_frames_; |
| 853 | // Depth of the frame we're currently at. |
| 854 | size_t cur_depth_; |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 855 | // Current inlining depth of the method we are currently at. |
| 856 | // 0 if there is no inlined frame. |
| 857 | size_t current_inlining_depth_; |
Brian Carlstrom | 0cd7ec2 | 2013-07-17 23:40:20 -0700 | [diff] [blame] | 858 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 859 | protected: |
| 860 | Context* const context_; |
Hiroshi Yamauchi | 02f365f | 2017-02-03 15:06:00 -0800 | [diff] [blame] | 861 | const bool check_suspended_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 862 | }; |
| 863 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 864 | } // namespace art |
| 865 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 866 | #endif // ART_RUNTIME_STACK_H_ |