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 | #include "stack.h" |
| 18 | |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 19 | #include "base/hex_dump.h" |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 20 | #include "mirror/art_method-inl.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 21 | #include "mirror/class-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 22 | #include "mirror/object.h" |
| 23 | #include "mirror/object-inl.h" |
| 24 | #include "mirror/object_array-inl.h" |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 25 | #include "object_utils.h" |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 26 | #include "quick/quick_method_frame_info.h" |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 27 | #include "runtime.h" |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 28 | #include "thread.h" |
Elliott Hughes | bfe487b | 2011-10-26 15:48:55 -0700 | [diff] [blame] | 29 | #include "thread_list.h" |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 30 | #include "throw_location.h" |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 31 | #include "verify_object-inl.h" |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 32 | #include "vmap_table.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 33 | |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame] | 34 | namespace art { |
| 35 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 36 | mirror::Object* ShadowFrame::GetThisObject() const { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 37 | mirror::ArtMethod* m = GetMethod(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 38 | if (m->IsStatic()) { |
| 39 | return NULL; |
| 40 | } else if (m->IsNative()) { |
| 41 | return GetVRegReference(0); |
| 42 | } else { |
| 43 | const DexFile::CodeItem* code_item = MethodHelper(m).GetCodeItem(); |
| 44 | CHECK(code_item != NULL) << PrettyMethod(m); |
| 45 | uint16_t reg = code_item->registers_size_ - code_item->ins_size_; |
| 46 | return GetVRegReference(reg); |
| 47 | } |
| 48 | } |
| 49 | |
Jeff Hao | e701f48 | 2013-05-24 11:50:49 -0700 | [diff] [blame] | 50 | mirror::Object* ShadowFrame::GetThisObject(uint16_t num_ins) const { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 51 | mirror::ArtMethod* m = GetMethod(); |
Jeff Hao | e701f48 | 2013-05-24 11:50:49 -0700 | [diff] [blame] | 52 | if (m->IsStatic()) { |
| 53 | return NULL; |
| 54 | } else { |
Jeff Hao | 8d44885 | 2013-06-03 17:26:19 -0700 | [diff] [blame] | 55 | return GetVRegReference(NumberOfVRegs() - num_ins); |
Jeff Hao | e701f48 | 2013-05-24 11:50:49 -0700 | [diff] [blame] | 56 | } |
| 57 | } |
| 58 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 59 | ThrowLocation ShadowFrame::GetCurrentLocationForThrow() const { |
| 60 | return ThrowLocation(GetThisObject(), GetMethod(), GetDexPC()); |
| 61 | } |
| 62 | |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 63 | size_t ManagedStack::NumJniShadowFrameReferences() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 64 | size_t count = 0; |
| 65 | for (const ManagedStack* current_fragment = this; current_fragment != NULL; |
| 66 | current_fragment = current_fragment->GetLink()) { |
| 67 | for (ShadowFrame* current_frame = current_fragment->top_shadow_frame_; current_frame != NULL; |
| 68 | current_frame = current_frame->GetLink()) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 69 | if (current_frame->GetMethod()->IsNative()) { |
| 70 | // The JNI ShadowFrame only contains references. (For indirect reference.) |
| 71 | count += current_frame->NumberOfVRegs(); |
| 72 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 73 | } |
| 74 | } |
| 75 | return count; |
| 76 | } |
| 77 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 78 | bool ManagedStack::ShadowFramesContain(StackReference<mirror::Object>* shadow_frame_entry) const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 79 | for (const ManagedStack* current_fragment = this; current_fragment != NULL; |
| 80 | current_fragment = current_fragment->GetLink()) { |
| 81 | for (ShadowFrame* current_frame = current_fragment->top_shadow_frame_; current_frame != NULL; |
| 82 | current_frame = current_frame->GetLink()) { |
| 83 | if (current_frame->Contains(shadow_frame_entry)) { |
| 84 | return true; |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | return false; |
| 89 | } |
| 90 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 91 | StackVisitor::StackVisitor(Thread* thread, Context* context) |
| 92 | : thread_(thread), cur_shadow_frame_(NULL), |
| 93 | cur_quick_frame_(NULL), cur_quick_frame_pc_(0), num_frames_(0), cur_depth_(0), |
| 94 | context_(context) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 95 | DCHECK(thread == Thread::Current() || thread->IsSuspended()) << *thread; |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 96 | } |
| 97 | |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 98 | uint32_t StackVisitor::GetDexPc(bool abort_on_failure) const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 99 | if (cur_shadow_frame_ != NULL) { |
| 100 | return cur_shadow_frame_->GetDexPC(); |
| 101 | } else if (cur_quick_frame_ != NULL) { |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 102 | return GetMethod()->ToDexPc(cur_quick_frame_pc_, abort_on_failure); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 103 | } else { |
| 104 | return 0; |
| 105 | } |
| 106 | } |
| 107 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 108 | mirror::Object* StackVisitor::GetThisObject() const { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 109 | mirror::ArtMethod* m = GetMethod(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 110 | if (m->IsStatic()) { |
| 111 | return NULL; |
| 112 | } else if (m->IsNative()) { |
| 113 | if (cur_quick_frame_ != NULL) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame^] | 114 | HandleScope* hs = reinterpret_cast<HandleScope*>( |
| 115 | reinterpret_cast<char*>(cur_quick_frame_) + m->GetHandleScopeOffsetInBytes()); |
| 116 | return hs->GetReference(0); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 117 | } else { |
| 118 | return cur_shadow_frame_->GetVRegReference(0); |
| 119 | } |
| 120 | } else { |
| 121 | const DexFile::CodeItem* code_item = MethodHelper(m).GetCodeItem(); |
| 122 | if (code_item == NULL) { |
Ian Rogers | e0dcd46 | 2014-03-08 15:21:04 -0800 | [diff] [blame] | 123 | UNIMPLEMENTED(ERROR) << "Failed to determine this object of abstract or proxy method: " |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 124 | << PrettyMethod(m); |
Ian Rogers | e0dcd46 | 2014-03-08 15:21:04 -0800 | [diff] [blame] | 125 | return nullptr; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 126 | } else { |
| 127 | uint16_t reg = code_item->registers_size_ - code_item->ins_size_; |
| 128 | return reinterpret_cast<mirror::Object*>(GetVReg(m, reg, kReferenceVReg)); |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 133 | size_t StackVisitor::GetNativePcOffset() const { |
| 134 | DCHECK(!IsShadowFrame()); |
| 135 | return GetMethod()->NativePcOffset(cur_quick_frame_pc_); |
| 136 | } |
| 137 | |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 138 | uint32_t StackVisitor::GetVReg(mirror::ArtMethod* m, uint16_t vreg, VRegKind kind) const { |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 139 | if (cur_quick_frame_ != NULL) { |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 140 | DCHECK(context_ != NULL); // You can't reliably read registers without a context. |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 141 | DCHECK(m == GetMethod()); |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 142 | const VmapTable vmap_table(m->GetVmapTable()); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 143 | uint32_t vmap_offset; |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 144 | QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 145 | // TODO: IsInContext stops before spotting floating point registers. |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 146 | if (vmap_table.IsInContext(vreg, kind, &vmap_offset)) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 147 | bool is_float = (kind == kFloatVReg) || (kind == kDoubleLoVReg) || (kind == kDoubleHiVReg); |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 148 | uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask(); |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 149 | return GetGPR(vmap_table.ComputeRegister(spill_mask, vmap_offset, kind)); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 150 | } else { |
| 151 | const DexFile::CodeItem* code_item = MethodHelper(m).GetCodeItem(); |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 152 | DCHECK(code_item != NULL) << PrettyMethod(m); // Can't be NULL or how would we compile its instructions? |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 153 | return *GetVRegAddr(cur_quick_frame_, code_item, frame_info.CoreSpillMask(), |
| 154 | frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), vreg); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 155 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 156 | } else { |
TDYa127 | 8e950c1 | 2012-11-02 09:58:19 -0700 | [diff] [blame] | 157 | return cur_shadow_frame_->GetVReg(vreg); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 158 | } |
| 159 | } |
| 160 | |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 161 | void StackVisitor::SetVReg(mirror::ArtMethod* m, uint16_t vreg, uint32_t new_value, |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 162 | VRegKind kind) { |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 163 | if (cur_quick_frame_ != NULL) { |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 164 | DCHECK(context_ != NULL); // You can't reliably write registers without a context. |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 165 | DCHECK(m == GetMethod()); |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 166 | const VmapTable vmap_table(m->GetVmapTable()); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 167 | uint32_t vmap_offset; |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 168 | QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 169 | // TODO: IsInContext stops before spotting floating point registers. |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 170 | if (vmap_table.IsInContext(vreg, kind, &vmap_offset)) { |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 171 | bool is_float = (kind == kFloatVReg) || (kind == kDoubleLoVReg) || (kind == kDoubleHiVReg); |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 172 | uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask(); |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 173 | const uint32_t reg = vmap_table.ComputeRegister(spill_mask, vmap_offset, kReferenceVReg); |
| 174 | SetGPR(reg, new_value); |
| 175 | } else { |
| 176 | const DexFile::CodeItem* code_item = MethodHelper(m).GetCodeItem(); |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 177 | DCHECK(code_item != NULL) << PrettyMethod(m); // Can't be NULL or how would we compile its instructions? |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 178 | int offset = GetVRegOffset(code_item, frame_info.CoreSpillMask(), frame_info.FpSpillMask(), |
| 179 | frame_info.FrameSizeInBytes(), vreg, kRuntimeISA); |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 180 | byte* vreg_addr = reinterpret_cast<byte*>(GetCurrentQuickFrame()) + offset; |
| 181 | *reinterpret_cast<uint32_t*>(vreg_addr) = new_value; |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 182 | } |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 183 | } else { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 184 | return cur_shadow_frame_->SetVReg(vreg, new_value); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 185 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 186 | } |
| 187 | |
Mathieu Chartier | 815873e | 2014-02-13 18:02:13 -0800 | [diff] [blame] | 188 | uintptr_t* StackVisitor::GetGPRAddress(uint32_t reg) const { |
| 189 | DCHECK(cur_quick_frame_ != NULL) << "This is a quick frame routine"; |
| 190 | return context_->GetGPRAddress(reg); |
| 191 | } |
| 192 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 193 | uintptr_t StackVisitor::GetGPR(uint32_t reg) const { |
Brian Carlstrom | df62950 | 2013-07-17 22:39:56 -0700 | [diff] [blame] | 194 | DCHECK(cur_quick_frame_ != NULL) << "This is a quick frame routine"; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 195 | return context_->GetGPR(reg); |
| 196 | } |
| 197 | |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 198 | void StackVisitor::SetGPR(uint32_t reg, uintptr_t value) { |
Brian Carlstrom | df62950 | 2013-07-17 22:39:56 -0700 | [diff] [blame] | 199 | DCHECK(cur_quick_frame_ != NULL) << "This is a quick frame routine"; |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 200 | context_->SetGPR(reg, value); |
| 201 | } |
| 202 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 203 | uintptr_t StackVisitor::GetReturnPc() const { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 204 | mirror::ArtMethod** sp = GetCurrentQuickFrame(); |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 205 | DCHECK(sp != NULL); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 206 | byte* pc_addr = reinterpret_cast<byte*>(sp) + GetMethod()->GetReturnPcOffsetInBytes(); |
| 207 | return *reinterpret_cast<uintptr_t*>(pc_addr); |
| 208 | } |
| 209 | |
| 210 | void StackVisitor::SetReturnPc(uintptr_t new_ret_pc) { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 211 | mirror::ArtMethod** sp = GetCurrentQuickFrame(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 212 | CHECK(sp != NULL); |
| 213 | byte* pc_addr = reinterpret_cast<byte*>(sp) + GetMethod()->GetReturnPcOffsetInBytes(); |
| 214 | *reinterpret_cast<uintptr_t*>(pc_addr) = new_ret_pc; |
| 215 | } |
| 216 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 217 | size_t StackVisitor::ComputeNumFrames(Thread* thread) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 218 | struct NumFramesVisitor : public StackVisitor { |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 219 | explicit NumFramesVisitor(Thread* thread) |
| 220 | : StackVisitor(thread, NULL), frames(0) {} |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 221 | |
| 222 | virtual bool VisitFrame() { |
| 223 | frames++; |
| 224 | return true; |
| 225 | } |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 226 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 227 | size_t frames; |
| 228 | }; |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 229 | NumFramesVisitor visitor(thread); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 230 | visitor.WalkStack(true); |
| 231 | return visitor.frames; |
| 232 | } |
| 233 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 234 | void StackVisitor::DescribeStack(Thread* thread) { |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 235 | struct DescribeStackVisitor : public StackVisitor { |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 236 | explicit DescribeStackVisitor(Thread* thread) |
| 237 | : StackVisitor(thread, NULL) {} |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 238 | |
| 239 | virtual bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 240 | LOG(INFO) << "Frame Id=" << GetFrameId() << " " << DescribeLocation(); |
| 241 | return true; |
| 242 | } |
| 243 | }; |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 244 | DescribeStackVisitor visitor(thread); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 245 | visitor.WalkStack(true); |
| 246 | } |
| 247 | |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 248 | std::string StackVisitor::DescribeLocation() const { |
| 249 | std::string result("Visiting method '"); |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 250 | mirror::ArtMethod* m = GetMethod(); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 251 | if (m == NULL) { |
| 252 | return "upcall"; |
| 253 | } |
| 254 | result += PrettyMethod(m); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 255 | result += StringPrintf("' at dex PC 0x%04x", GetDexPc()); |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 256 | if (!IsShadowFrame()) { |
| 257 | result += StringPrintf(" (native PC %p)", reinterpret_cast<void*>(GetCurrentQuickFramePc())); |
| 258 | } |
| 259 | return result; |
| 260 | } |
| 261 | |
Sebastien Hertz | 74e256b | 2013-10-04 10:40:37 +0200 | [diff] [blame] | 262 | instrumentation::InstrumentationStackFrame& StackVisitor::GetInstrumentationStackFrame(uint32_t depth) const { |
Sebastien Hertz | 123756a | 2013-11-27 15:49:42 +0100 | [diff] [blame] | 263 | CHECK_LT(depth, thread_->GetInstrumentationStack()->size()); |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 264 | return thread_->GetInstrumentationStack()->at(depth); |
| 265 | } |
| 266 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 267 | void StackVisitor::SanityCheckFrame() const { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 268 | if (kIsDebugBuild) { |
| 269 | mirror::ArtMethod* method = GetMethod(); |
Mathieu Chartier | 119c6bd | 2014-05-09 14:11:47 -0700 | [diff] [blame] | 270 | CHECK_EQ(method->GetClass(), mirror::ArtMethod::GetJavaLangReflectArtMethod()); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 271 | if (cur_quick_frame_ != nullptr) { |
| 272 | method->AssertPcIsWithinQuickCode(cur_quick_frame_pc_); |
| 273 | // Frame sanity. |
| 274 | size_t frame_size = method->GetFrameSizeInBytes(); |
| 275 | CHECK_NE(frame_size, 0u); |
Andreas Gampe | 5b417b9 | 2014-03-10 14:18:35 -0700 | [diff] [blame] | 276 | // A rough guess at an upper size we expect to see for a frame. |
| 277 | // 256 registers |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame^] | 278 | // 2 words HandleScope overhead |
Andreas Gampe | 5b417b9 | 2014-03-10 14:18:35 -0700 | [diff] [blame] | 279 | // 3+3 register spills |
| 280 | // TODO: this seems architecture specific for the case of JNI frames. |
Brian Carlstrom | ed08bd4 | 2014-03-19 18:34:17 -0700 | [diff] [blame] | 281 | // TODO: 083-compiler-regressions ManyFloatArgs shows this estimate is wrong. |
| 282 | // const size_t kMaxExpectedFrameSize = (256 + 2 + 3 + 3) * sizeof(word); |
| 283 | const size_t kMaxExpectedFrameSize = 2 * KB; |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 284 | CHECK_LE(frame_size, kMaxExpectedFrameSize); |
| 285 | size_t return_pc_offset = method->GetReturnPcOffsetInBytes(); |
| 286 | CHECK_LT(return_pc_offset, frame_size); |
| 287 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 288 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | void StackVisitor::WalkStack(bool include_transitions) { |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 292 | DCHECK(thread_ == Thread::Current() || thread_->IsSuspended()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 293 | CHECK_EQ(cur_depth_, 0U); |
| 294 | bool exit_stubs_installed = Runtime::Current()->GetInstrumentation()->AreExitStubsInstalled(); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 295 | uint32_t instrumentation_stack_depth = 0; |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 296 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 297 | for (const ManagedStack* current_fragment = thread_->GetManagedStack(); current_fragment != NULL; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 298 | current_fragment = current_fragment->GetLink()) { |
| 299 | cur_shadow_frame_ = current_fragment->GetTopShadowFrame(); |
| 300 | cur_quick_frame_ = current_fragment->GetTopQuickFrame(); |
| 301 | cur_quick_frame_pc_ = current_fragment->GetTopQuickFramePc(); |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 302 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 303 | if (cur_quick_frame_ != NULL) { // Handle quick stack frames. |
| 304 | // Can't be both a shadow and a quick fragment. |
| 305 | DCHECK(current_fragment->GetTopShadowFrame() == NULL); |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 306 | mirror::ArtMethod* method = *cur_quick_frame_; |
jeffhao | 6641ea1 | 2013-01-02 18:13:42 -0800 | [diff] [blame] | 307 | while (method != NULL) { |
Dave Allison | 5cd3375 | 2014-04-15 15:57:58 -0700 | [diff] [blame] | 308 | SanityCheckFrame(); |
| 309 | bool should_continue = VisitFrame(); |
| 310 | if (UNLIKELY(!should_continue)) { |
| 311 | return; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 312 | } |
Dave Allison | 5cd3375 | 2014-04-15 15:57:58 -0700 | [diff] [blame] | 313 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 314 | if (context_ != NULL) { |
| 315 | context_->FillCalleeSaves(*this); |
| 316 | } |
| 317 | size_t frame_size = method->GetFrameSizeInBytes(); |
| 318 | // Compute PC for next stack frame from return PC. |
| 319 | size_t return_pc_offset = method->GetReturnPcOffsetInBytes(); |
| 320 | byte* return_pc_addr = reinterpret_cast<byte*>(cur_quick_frame_) + return_pc_offset; |
| 321 | uintptr_t return_pc = *reinterpret_cast<uintptr_t*>(return_pc_addr); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 322 | if (UNLIKELY(exit_stubs_installed)) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 323 | // While profiling, the return pc is restored from the side stack, except when walking |
| 324 | // the stack for an exception where the side stack will be unwound in VisitFrame. |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 325 | if (GetQuickInstrumentationExitPc() == return_pc) { |
Sebastien Hertz | 74e256b | 2013-10-04 10:40:37 +0200 | [diff] [blame] | 326 | const instrumentation::InstrumentationStackFrame& instrumentation_frame = |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 327 | GetInstrumentationStackFrame(instrumentation_stack_depth); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 328 | instrumentation_stack_depth++; |
Jeff Hao | fb2802d | 2013-07-24 13:53:05 -0700 | [diff] [blame] | 329 | if (GetMethod() == Runtime::Current()->GetCalleeSaveMethod(Runtime::kSaveAll)) { |
| 330 | // Skip runtime save all callee frames which are used to deliver exceptions. |
| 331 | } else if (instrumentation_frame.interpreter_entry_) { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 332 | mirror::ArtMethod* callee = Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsAndArgs); |
Jeff Hao | fb2802d | 2013-07-24 13:53:05 -0700 | [diff] [blame] | 333 | CHECK_EQ(GetMethod(), callee) << "Expected: " << PrettyMethod(callee) << " Found: " |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 334 | << PrettyMethod(GetMethod()); |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 335 | } else if (instrumentation_frame.method_ != GetMethod()) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 336 | LOG(FATAL) << "Expected: " << PrettyMethod(instrumentation_frame.method_) |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 337 | << " Found: " << PrettyMethod(GetMethod()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 338 | } |
| 339 | if (num_frames_ != 0) { |
| 340 | // Check agreement of frame Ids only if num_frames_ is computed to avoid infinite |
| 341 | // recursion. |
| 342 | CHECK(instrumentation_frame.frame_id_ == GetFrameId()) |
| 343 | << "Expected: " << instrumentation_frame.frame_id_ |
| 344 | << " Found: " << GetFrameId(); |
| 345 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 346 | return_pc = instrumentation_frame.return_pc_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 347 | } |
| 348 | } |
| 349 | cur_quick_frame_pc_ = return_pc; |
| 350 | byte* next_frame = reinterpret_cast<byte*>(cur_quick_frame_) + frame_size; |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 351 | cur_quick_frame_ = reinterpret_cast<mirror::ArtMethod**>(next_frame); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 352 | cur_depth_++; |
| 353 | method = *cur_quick_frame_; |
jeffhao | 6641ea1 | 2013-01-02 18:13:42 -0800 | [diff] [blame] | 354 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 355 | } else if (cur_shadow_frame_ != NULL) { |
| 356 | do { |
| 357 | SanityCheckFrame(); |
| 358 | bool should_continue = VisitFrame(); |
| 359 | if (UNLIKELY(!should_continue)) { |
| 360 | return; |
| 361 | } |
| 362 | cur_depth_++; |
| 363 | cur_shadow_frame_ = cur_shadow_frame_->GetLink(); |
Brian Carlstrom | df62950 | 2013-07-17 22:39:56 -0700 | [diff] [blame] | 364 | } while (cur_shadow_frame_ != NULL); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 365 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 366 | if (include_transitions) { |
| 367 | bool should_continue = VisitFrame(); |
| 368 | if (!should_continue) { |
| 369 | return; |
| 370 | } |
| 371 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 372 | cur_depth_++; |
| 373 | } |
| 374 | if (num_frames_ != 0) { |
| 375 | CHECK_EQ(cur_depth_, num_frames_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 376 | } |
| 377 | } |
| 378 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 379 | } // namespace art |