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 | |
| 17 | #ifndef ART_SRC_STACK_H_ |
| 18 | #define ART_SRC_STACK_H_ |
| 19 | |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 20 | #include "dex_file.h" |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 21 | #include "heap.h" |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame^] | 22 | #include "instrumentation.h" |
Elliott Hughes | bfe487b | 2011-10-26 15:48:55 -0700 | [diff] [blame] | 23 | #include "jni.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 24 | #include "macros.h" |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 25 | #include "oat/runtime/context.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 26 | |
| 27 | #include <stdint.h> |
| 28 | |
| 29 | namespace art { |
| 30 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 31 | class AbstractMethod; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 32 | class Object; |
| 33 | class ShadowFrame; |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 34 | class StackIndirectReferenceTable; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 35 | class ScopedObjectAccess; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 36 | class Thread; |
| 37 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 38 | class ShadowFrame { |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 39 | public: |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 40 | static ShadowFrame* Create(uint16_t num_refs, uint16_t num_vregs, ShadowFrame* link, |
| 41 | AbstractMethod* method, uint32_t dex_pc) { |
| 42 | size_t sz = sizeof(ShadowFrame) + (sizeof(Object*) * num_refs) + (sizeof(uint32_t) * num_vregs); |
| 43 | uint8_t* memory = new uint8_t[sz]; |
| 44 | return new (memory) ShadowFrame(num_refs, num_vregs, link, method, dex_pc); |
| 45 | } |
| 46 | ~ShadowFrame() {} |
| 47 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 48 | uint32_t NumberOfReferences() const { |
| 49 | return number_of_references_; |
| 50 | } |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 51 | |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 52 | void SetNumberOfReferences(uint16_t number_of_references) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 53 | number_of_references_ = number_of_references; |
| 54 | } |
| 55 | |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 56 | void SetNumberOfVRegs(uint16_t number_of_vregs) { |
| 57 | number_of_vregs_ = number_of_vregs; |
| 58 | } |
| 59 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 60 | uint32_t GetDexPC() const { |
| 61 | return dex_pc_; |
| 62 | } |
| 63 | |
| 64 | void SetDexPC(uint32_t dex_pc) { |
| 65 | dex_pc_ = dex_pc; |
| 66 | } |
| 67 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 68 | ShadowFrame* GetLink() const { |
| 69 | return link_; |
| 70 | } |
| 71 | |
| 72 | void SetLink(ShadowFrame* frame) { |
| 73 | DCHECK_NE(this, frame); |
| 74 | link_ = frame; |
| 75 | } |
| 76 | |
| 77 | Object* GetReference(size_t i) const { |
| 78 | DCHECK_LT(i, number_of_references_); |
| 79 | return references_[i]; |
| 80 | } |
| 81 | |
| 82 | void SetReference(size_t i, Object* object) { |
| 83 | DCHECK_LT(i, number_of_references_); |
| 84 | references_[i] = object; |
| 85 | } |
Elliott Hughes | 91bf6cd | 2012-02-14 17:27:48 -0800 | [diff] [blame] | 86 | |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 87 | int32_t GetVReg(size_t i) const { |
| 88 | DCHECK_LT(i, number_of_vregs_); |
| 89 | const int8_t* vregs = reinterpret_cast<const int8_t*>(this) + VRegsOffset(); |
| 90 | return reinterpret_cast<const int32_t*>(vregs)[i]; |
| 91 | } |
| 92 | |
| 93 | float GetVRegFloat(size_t i) const { |
| 94 | DCHECK_LT(i, number_of_vregs_); |
| 95 | const int8_t* vregs = reinterpret_cast<const int8_t*>(this) + VRegsOffset(); |
| 96 | return reinterpret_cast<const float*>(vregs)[i]; |
| 97 | } |
| 98 | |
| 99 | int64_t GetVRegLong(size_t i) const { |
| 100 | const int8_t* vregs = reinterpret_cast<const int8_t*>(this) + VRegsOffset(); |
| 101 | const int32_t* low_half = &reinterpret_cast<const int32_t*>(vregs)[i]; |
| 102 | return *reinterpret_cast<const int64_t*>(low_half); |
| 103 | } |
| 104 | |
| 105 | double GetVRegDouble(size_t i) const { |
| 106 | const int8_t* vregs = reinterpret_cast<const int8_t*>(this) + VRegsOffset(); |
| 107 | const int32_t* low_half = &reinterpret_cast<const int32_t*>(vregs)[i]; |
| 108 | return *reinterpret_cast<const double*>(low_half); |
| 109 | } |
| 110 | |
| 111 | void SetVReg(size_t i, int32_t val) { |
| 112 | DCHECK_LT(i, number_of_vregs_); |
| 113 | int8_t* vregs = reinterpret_cast<int8_t*>(this) + VRegsOffset(); |
| 114 | reinterpret_cast<int32_t*>(vregs)[i] = val; |
| 115 | } |
| 116 | |
| 117 | void SetVRegFloat(size_t i, float val) { |
| 118 | DCHECK_LT(i, number_of_vregs_); |
| 119 | int8_t* vregs = reinterpret_cast<int8_t*>(this) + VRegsOffset(); |
| 120 | reinterpret_cast<float*>(vregs)[i] = val; |
| 121 | } |
| 122 | |
| 123 | void SetVRegLong(size_t i, int64_t val) { |
| 124 | int8_t* vregs = reinterpret_cast<int8_t*>(this) + VRegsOffset(); |
| 125 | int32_t* low_half = &reinterpret_cast<int32_t*>(vregs)[i]; |
| 126 | *reinterpret_cast<int64_t*>(low_half) = val; |
| 127 | } |
| 128 | |
| 129 | void SetVRegDouble(size_t i, double val) { |
| 130 | int8_t* vregs = reinterpret_cast<int8_t*>(this) + VRegsOffset(); |
| 131 | int32_t* low_half = &reinterpret_cast<int32_t*>(vregs)[i]; |
| 132 | *reinterpret_cast<double*>(low_half) = val; |
| 133 | } |
| 134 | |
| 135 | void SetReferenceAndVReg(size_t i, Object* val) { |
| 136 | SetReference(i, val); |
| 137 | SetVReg(i, reinterpret_cast<int32_t>(val)); |
| 138 | } |
| 139 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 140 | AbstractMethod* GetMethod() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 141 | DCHECK_NE(method_, static_cast<void*>(NULL)); |
| 142 | return method_; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 143 | } |
| 144 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 145 | void SetMethod(AbstractMethod* method) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 146 | DCHECK_NE(method, static_cast<void*>(NULL)); |
| 147 | method_ = method; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 148 | } |
| 149 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 150 | bool Contains(Object** shadow_frame_entry) const { |
| 151 | return ((&references_[0] <= shadow_frame_entry) && |
| 152 | (shadow_frame_entry <= (&references_[number_of_references_ - 1]))); |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 153 | } |
| 154 | |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 155 | template <typename Visitor> |
| 156 | void VisitRoots(const Visitor& visitor) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 157 | size_t num_refs = NumberOfReferences(); |
| 158 | for (size_t j = 0; j < num_refs; j++) { |
| 159 | Object* object = GetReference(j); |
| 160 | if (object != NULL) { |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 161 | visitor(object, j); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 162 | } |
| 163 | } |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 164 | } |
| 165 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 166 | static size_t LinkOffset() { |
| 167 | return OFFSETOF_MEMBER(ShadowFrame, link_); |
| 168 | } |
| 169 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 170 | static size_t MethodOffset() { |
| 171 | return OFFSETOF_MEMBER(ShadowFrame, method_); |
| 172 | } |
| 173 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 174 | static size_t DexPCOffset() { |
| 175 | return OFFSETOF_MEMBER(ShadowFrame, dex_pc_); |
| 176 | } |
| 177 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 178 | static size_t NumberOfReferencesOffset() { |
| 179 | return OFFSETOF_MEMBER(ShadowFrame, number_of_references_); |
| 180 | } |
| 181 | |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 182 | static size_t NumberOfVRegsOffset() { |
| 183 | return OFFSETOF_MEMBER(ShadowFrame, number_of_vregs_); |
| 184 | } |
| 185 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 186 | static size_t ReferencesOffset() { |
| 187 | return OFFSETOF_MEMBER(ShadowFrame, references_); |
| 188 | } |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 189 | |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 190 | size_t VRegsOffset() const { |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 191 | return ReferencesOffset() + (sizeof(Object*) * NumberOfReferences()); |
| 192 | } |
| 193 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 194 | private: |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 195 | ShadowFrame(uint16_t num_refs, uint16_t num_vregs, ShadowFrame* link, AbstractMethod* method, |
| 196 | uint32_t dex_pc) |
| 197 | : number_of_references_ (num_refs), number_of_vregs_(num_vregs), link_(link), |
| 198 | method_(method), dex_pc_(dex_pc) { |
| 199 | for (size_t i = 0; i < num_refs; ++i) { |
| 200 | SetReference(i, NULL); |
| 201 | } |
| 202 | for (size_t i = 0; i < num_vregs; ++i) { |
| 203 | SetVReg(i, 0); |
| 204 | } |
| 205 | } |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 206 | |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 207 | // TODO: make the majority of these fields const. |
Ian Rogers | 5438ad8 | 2012-10-15 17:22:44 -0700 | [diff] [blame] | 208 | uint16_t number_of_references_; |
| 209 | uint16_t number_of_vregs_; |
| 210 | // Link to previous shadow frame or NULL. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 211 | ShadowFrame* link_; |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 212 | AbstractMethod* method_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 213 | uint32_t dex_pc_; |
Ian Rogers | 2fa6b2e | 2012-10-17 00:10:17 -0700 | [diff] [blame] | 214 | Object* references_[0]; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 215 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 216 | DISALLOW_IMPLICIT_CONSTRUCTORS(ShadowFrame); |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 217 | }; |
| 218 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 219 | // The managed stack is used to record fragments of managed code stacks. Managed code stacks |
| 220 | // may either be shadow frames or lists of frames using fixed frame sizes. Transition records are |
| 221 | // necessary for transitions between code using different frame layouts and transitions into native |
| 222 | // code. |
| 223 | class PACKED ManagedStack { |
| 224 | public: |
Ian Rogers | ca19066 | 2012-06-26 15:45:57 -0700 | [diff] [blame] | 225 | ManagedStack() |
| 226 | : link_(NULL), top_shadow_frame_(NULL), top_quick_frame_(NULL), top_quick_frame_pc_(0) {} |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 227 | |
| 228 | void PushManagedStackFragment(ManagedStack* fragment) { |
| 229 | // Copy this top fragment into given fragment. |
| 230 | memcpy(fragment, this, sizeof(ManagedStack)); |
| 231 | // Clear this fragment, which has become the top. |
| 232 | memset(this, 0, sizeof(ManagedStack)); |
| 233 | // Link our top fragment onto the given fragment. |
| 234 | link_ = fragment; |
| 235 | } |
| 236 | |
| 237 | void PopManagedStackFragment(const ManagedStack& fragment) { |
| 238 | DCHECK(&fragment == link_); |
| 239 | // Copy this given fragment back to the top. |
| 240 | memcpy(this, &fragment, sizeof(ManagedStack)); |
| 241 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 242 | |
| 243 | ManagedStack* GetLink() const { |
| 244 | return link_; |
| 245 | } |
| 246 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 247 | AbstractMethod** GetTopQuickFrame() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 248 | return top_quick_frame_; |
| 249 | } |
| 250 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 251 | void SetTopQuickFrame(AbstractMethod** top) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 252 | top_quick_frame_ = top; |
| 253 | } |
| 254 | |
| 255 | uintptr_t GetTopQuickFramePc() const { |
| 256 | return top_quick_frame_pc_; |
| 257 | } |
| 258 | |
| 259 | void SetTopQuickFramePc(uintptr_t pc) { |
| 260 | top_quick_frame_pc_ = pc; |
| 261 | } |
| 262 | |
| 263 | static size_t TopQuickFrameOffset() { |
| 264 | return OFFSETOF_MEMBER(ManagedStack, top_quick_frame_); |
| 265 | } |
| 266 | |
| 267 | static size_t TopQuickFramePcOffset() { |
| 268 | return OFFSETOF_MEMBER(ManagedStack, top_quick_frame_pc_); |
| 269 | } |
| 270 | |
| 271 | ShadowFrame* PushShadowFrame(ShadowFrame* new_top_frame) { |
| 272 | ShadowFrame* old_frame = top_shadow_frame_; |
| 273 | top_shadow_frame_ = new_top_frame; |
| 274 | new_top_frame->SetLink(old_frame); |
| 275 | return old_frame; |
| 276 | } |
| 277 | |
| 278 | ShadowFrame* PopShadowFrame() { |
| 279 | CHECK(top_shadow_frame_ != NULL); |
| 280 | ShadowFrame* frame = top_shadow_frame_; |
| 281 | top_shadow_frame_ = frame->GetLink(); |
| 282 | return frame; |
| 283 | } |
| 284 | |
| 285 | ShadowFrame* GetTopShadowFrame() const { |
| 286 | return top_shadow_frame_; |
| 287 | } |
| 288 | |
| 289 | static size_t TopShadowFrameOffset() { |
| 290 | return OFFSETOF_MEMBER(ManagedStack, top_shadow_frame_); |
| 291 | } |
| 292 | |
| 293 | size_t NumShadowFrameReferences() const; |
| 294 | |
| 295 | bool ShadowFramesContain(Object** shadow_frame_entry) const; |
| 296 | |
| 297 | private: |
| 298 | ManagedStack* link_; |
| 299 | ShadowFrame* top_shadow_frame_; |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 300 | AbstractMethod** top_quick_frame_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 301 | uintptr_t top_quick_frame_pc_; |
| 302 | }; |
| 303 | |
| 304 | class StackVisitor { |
| 305 | protected: |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame^] | 306 | StackVisitor(const ManagedStack* stack, const std::vector<InstrumentationStackFrame>* instrumentation_stack, |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 307 | Context* context) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 308 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame^] | 309 | : stack_start_(stack), instrumentation_stack_(instrumentation_stack), cur_shadow_frame_(NULL), |
Ian Rogers | ca19066 | 2012-06-26 15:45:57 -0700 | [diff] [blame] | 310 | cur_quick_frame_(NULL), cur_quick_frame_pc_(0), num_frames_(0), cur_depth_(0), |
| 311 | context_(context) {} |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 312 | |
| 313 | public: |
| 314 | virtual ~StackVisitor() {} |
| 315 | |
| 316 | // 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] | 317 | virtual bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) = 0; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 318 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 319 | void WalkStack(bool include_transitions = false) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 320 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 321 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 322 | AbstractMethod* GetMethod() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 323 | if (cur_shadow_frame_ != NULL) { |
| 324 | return cur_shadow_frame_->GetMethod(); |
| 325 | } else if (cur_quick_frame_ != NULL) { |
| 326 | return *cur_quick_frame_; |
| 327 | } else { |
| 328 | return NULL; |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | bool IsShadowFrame() const { |
| 333 | return cur_shadow_frame_ != NULL; |
| 334 | } |
| 335 | |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 336 | uint32_t GetDexPc() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 337 | |
| 338 | size_t GetNativePcOffset() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 339 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 340 | uintptr_t LoadCalleeSave(int num, size_t frame_size) const { |
| 341 | // Callee saves are held at the top of the frame |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 342 | AbstractMethod* method = GetMethod(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 343 | DCHECK(method != NULL); |
| 344 | byte* save_addr = |
| 345 | reinterpret_cast<byte*>(cur_quick_frame_) + frame_size - ((num + 1) * kPointerSize); |
| 346 | #if defined(__i386__) |
| 347 | save_addr -= kPointerSize; // account for return address |
| 348 | #endif |
| 349 | return *reinterpret_cast<uintptr_t*>(save_addr); |
| 350 | } |
| 351 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 352 | // 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] | 353 | size_t GetFrameHeight() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 354 | return GetNumFrames() - cur_depth_; |
| 355 | } |
| 356 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 357 | // Returns a frame ID for JDWP use, starting from 1. |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 358 | size_t GetFrameId() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 359 | return GetFrameHeight() + 1; |
| 360 | } |
| 361 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 362 | size_t GetNumFrames() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 363 | if (num_frames_ == 0) { |
| 364 | num_frames_ = ComputeNumFrames(); |
| 365 | } |
| 366 | return num_frames_; |
| 367 | } |
| 368 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 369 | uint32_t GetVReg(AbstractMethod* m, int vreg) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 370 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 371 | void SetVReg(AbstractMethod* m, int vreg, uint32_t new_value) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 372 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 373 | |
| 374 | uintptr_t GetGPR(uint32_t reg) const; |
| 375 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 376 | uint32_t GetVReg(AbstractMethod** cur_quick_frame, const DexFile::CodeItem* code_item, |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 377 | uint32_t core_spills, uint32_t fp_spills, size_t frame_size, int vreg) const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 378 | int offset = GetVRegOffset(code_item, core_spills, fp_spills, frame_size, vreg); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 379 | DCHECK_EQ(cur_quick_frame, GetCurrentQuickFrame()); |
| 380 | byte* vreg_addr = reinterpret_cast<byte*>(cur_quick_frame) + offset; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 381 | return *reinterpret_cast<uint32_t*>(vreg_addr); |
| 382 | } |
| 383 | |
| 384 | uintptr_t GetReturnPc() const; |
| 385 | |
| 386 | void SetReturnPc(uintptr_t new_ret_pc); |
| 387 | |
| 388 | /* |
| 389 | * Return sp-relative offset for a Dalvik virtual register, compiler |
| 390 | * spill or Method* in bytes using Method*. |
| 391 | * Note that (reg >= 0) refers to a Dalvik register, (reg == -2) |
| 392 | * denotes Method* and (reg <= -3) denotes a compiler temp. |
| 393 | * |
| 394 | * +------------------------+ |
| 395 | * | IN[ins-1] | {Note: resides in caller's frame} |
| 396 | * | . | |
| 397 | * | IN[0] | |
| 398 | * | caller's Method* | |
| 399 | * +========================+ {Note: start of callee's frame} |
| 400 | * | core callee-save spill | {variable sized} |
| 401 | * +------------------------+ |
| 402 | * | fp callee-save spill | |
| 403 | * +------------------------+ |
| 404 | * | filler word | {For compatibility, if V[locals-1] used as wide |
| 405 | * +------------------------+ |
| 406 | * | V[locals-1] | |
| 407 | * | V[locals-2] | |
| 408 | * | . | |
| 409 | * | . | ... (reg == 2) |
| 410 | * | V[1] | ... (reg == 1) |
| 411 | * | V[0] | ... (reg == 0) <---- "locals_start" |
| 412 | * +------------------------+ |
| 413 | * | Compiler temps | ... (reg == -2) |
| 414 | * | | ... (reg == -3) |
| 415 | * | | ... (reg == -4) |
| 416 | * +------------------------+ |
| 417 | * | stack alignment padding| {0 to (kStackAlignWords-1) of padding} |
| 418 | * +------------------------+ |
| 419 | * | OUT[outs-1] | |
| 420 | * | OUT[outs-2] | |
| 421 | * | . | |
| 422 | * | OUT[0] | |
| 423 | * | curMethod* | ... (reg == -1) <<== sp, 16-byte aligned |
| 424 | * +========================+ |
| 425 | */ |
| 426 | static int GetVRegOffset(const DexFile::CodeItem* code_item, |
Ian Rogers | b23a772 | 2012-10-09 16:54:26 -0700 | [diff] [blame] | 427 | uint32_t core_spills, uint32_t fp_spills, |
| 428 | size_t frame_size, int reg) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 429 | DCHECK_EQ(frame_size & (kStackAlignment - 1), 0U); |
| 430 | int num_spills = __builtin_popcount(core_spills) + __builtin_popcount(fp_spills) + 1; // Filler. |
| 431 | int num_ins = code_item->ins_size_; |
| 432 | int num_regs = code_item->registers_size_ - num_ins; |
| 433 | int locals_start = frame_size - ((num_spills + num_regs) * sizeof(uint32_t)); |
| 434 | if (reg == -2) { |
| 435 | return 0; // Method* |
| 436 | } else if (reg <= -3) { |
| 437 | return locals_start - ((reg + 1) * sizeof(uint32_t)); // Compiler temp. |
| 438 | } else if (reg < num_regs) { |
| 439 | return locals_start + (reg * sizeof(uint32_t)); // Dalvik local reg. |
| 440 | } else { |
| 441 | return frame_size + ((reg - num_regs) * sizeof(uint32_t)) + sizeof(uint32_t); // Dalvik in. |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | uintptr_t GetCurrentQuickFramePc() const { |
| 446 | return cur_quick_frame_pc_; |
| 447 | } |
| 448 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 449 | AbstractMethod** GetCurrentQuickFrame() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 450 | return cur_quick_frame_; |
| 451 | } |
| 452 | |
| 453 | ShadowFrame* GetCurrentShadowFrame() const { |
| 454 | return cur_shadow_frame_; |
| 455 | } |
| 456 | |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 457 | StackIndirectReferenceTable* GetCurrentSirt() const { |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 458 | AbstractMethod** sp = GetCurrentQuickFrame(); |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 459 | ++sp; // Skip Method*; SIRT comes next; |
| 460 | return reinterpret_cast<StackIndirectReferenceTable*>(sp); |
| 461 | } |
| 462 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 463 | private: |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 464 | size_t ComputeNumFrames() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 465 | |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame^] | 466 | InstrumentationStackFrame GetInstrumentationStackFrame(uint32_t depth) const { |
| 467 | return instrumentation_stack_->at(instrumentation_stack_->size() - depth - 1); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 468 | } |
| 469 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 470 | void SanityCheckFrame() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 471 | |
| 472 | const ManagedStack* const stack_start_; |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame^] | 473 | const std::vector<InstrumentationStackFrame>* const instrumentation_stack_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 474 | ShadowFrame* cur_shadow_frame_; |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 475 | AbstractMethod** cur_quick_frame_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 476 | uintptr_t cur_quick_frame_pc_; |
| 477 | // Lazily computed, number of frames in the stack. |
| 478 | size_t num_frames_; |
| 479 | // Depth of the frame we're currently at. |
| 480 | size_t cur_depth_; |
| 481 | protected: |
| 482 | Context* const context_; |
| 483 | }; |
| 484 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 485 | } // namespace art |
| 486 | |
| 487 | #endif // ART_SRC_STACK_H_ |