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 | |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 19 | #include "arch/context.h" |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 20 | #include "base/hex_dump.h" |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 21 | #include "mirror/art_method-inl.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 22 | #include "mirror/class-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 23 | #include "mirror/object.h" |
| 24 | #include "mirror/object-inl.h" |
| 25 | #include "mirror/object_array-inl.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 { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 43 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 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 | |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 98 | StackVisitor::StackVisitor(Thread* thread, Context* context, size_t num_frames) |
| 99 | : thread_(thread), cur_shadow_frame_(NULL), |
| 100 | cur_quick_frame_(NULL), cur_quick_frame_pc_(0), num_frames_(num_frames), cur_depth_(0), |
| 101 | context_(context) { |
| 102 | DCHECK(thread == Thread::Current() || thread->IsSuspended()) << *thread; |
| 103 | } |
| 104 | |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 105 | uint32_t StackVisitor::GetDexPc(bool abort_on_failure) const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 106 | if (cur_shadow_frame_ != NULL) { |
| 107 | return cur_shadow_frame_->GetDexPC(); |
| 108 | } else if (cur_quick_frame_ != NULL) { |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 109 | return GetMethod()->ToDexPc(cur_quick_frame_pc_, abort_on_failure); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 110 | } else { |
| 111 | return 0; |
| 112 | } |
| 113 | } |
| 114 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 115 | mirror::Object* StackVisitor::GetThisObject() const { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 116 | mirror::ArtMethod* m = GetMethod(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 117 | if (m->IsStatic()) { |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame^] | 118 | return nullptr; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 119 | } else if (m->IsNative()) { |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame^] | 120 | if (cur_quick_frame_ != nullptr) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 121 | HandleScope* hs = reinterpret_cast<HandleScope*>( |
| 122 | reinterpret_cast<char*>(cur_quick_frame_) + m->GetHandleScopeOffsetInBytes()); |
| 123 | return hs->GetReference(0); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 124 | } else { |
| 125 | return cur_shadow_frame_->GetVRegReference(0); |
| 126 | } |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame^] | 127 | } else if (m->IsOptimized()) { |
| 128 | // TODO: Implement, currently only used for exceptions when jdwp is enabled. |
| 129 | LOG(WARNING) << "StackVisitor::GetThisObject is unimplemented with the optimizing compiler"; |
| 130 | return nullptr; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 131 | } else { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 132 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame^] | 133 | if (code_item == nullptr) { |
Ian Rogers | e0dcd46 | 2014-03-08 15:21:04 -0800 | [diff] [blame] | 134 | UNIMPLEMENTED(ERROR) << "Failed to determine this object of abstract or proxy method: " |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 135 | << PrettyMethod(m); |
Ian Rogers | e0dcd46 | 2014-03-08 15:21:04 -0800 | [diff] [blame] | 136 | return nullptr; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 137 | } else { |
| 138 | uint16_t reg = code_item->registers_size_ - code_item->ins_size_; |
| 139 | return reinterpret_cast<mirror::Object*>(GetVReg(m, reg, kReferenceVReg)); |
| 140 | } |
| 141 | } |
| 142 | } |
| 143 | |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 144 | size_t StackVisitor::GetNativePcOffset() const { |
| 145 | DCHECK(!IsShadowFrame()); |
| 146 | return GetMethod()->NativePcOffset(cur_quick_frame_pc_); |
| 147 | } |
| 148 | |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 149 | bool StackVisitor::GetVReg(mirror::ArtMethod* m, uint16_t vreg, VRegKind kind, |
| 150 | uint32_t* val) const { |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 151 | if (cur_quick_frame_ != nullptr) { |
| 152 | DCHECK(context_ != nullptr); // You can't reliably read registers without a context. |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 153 | DCHECK(m == GetMethod()); |
Vladimir Marko | 4c1c510 | 2014-05-14 16:51:16 +0100 | [diff] [blame] | 154 | const void* code_pointer = m->GetQuickOatCodePointer(); |
| 155 | DCHECK(code_pointer != nullptr); |
| 156 | const VmapTable vmap_table(m->GetVmapTable(code_pointer)); |
| 157 | QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(code_pointer); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 158 | uint32_t vmap_offset; |
| 159 | // TODO: IsInContext stops before spotting floating point registers. |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 160 | if (vmap_table.IsInContext(vreg, kind, &vmap_offset)) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 161 | bool is_float = (kind == kFloatVReg) || (kind == kDoubleLoVReg) || (kind == kDoubleHiVReg); |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 162 | uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask(); |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 163 | uint32_t reg = vmap_table.ComputeRegister(spill_mask, vmap_offset, kind); |
| 164 | uintptr_t ptr_val; |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 165 | bool success = is_float ? GetFPR(reg, &ptr_val) : GetGPR(reg, &ptr_val); |
| 166 | if (!success) { |
| 167 | return false; |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 168 | } |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 169 | bool target64 = Is64BitInstructionSet(kRuntimeISA); |
| 170 | if (target64) { |
buzbee | b5860fb | 2014-06-21 15:31:01 -0700 | [diff] [blame] | 171 | bool wide_lo = (kind == kLongLoVReg) || (kind == kDoubleLoVReg); |
| 172 | bool wide_hi = (kind == kLongHiVReg) || (kind == kDoubleHiVReg); |
| 173 | int64_t value_long = static_cast<int64_t>(ptr_val); |
| 174 | if (wide_lo) { |
| 175 | ptr_val = static_cast<uintptr_t>(value_long & 0xFFFFFFFF); |
| 176 | } else if (wide_hi) { |
| 177 | ptr_val = static_cast<uintptr_t>(value_long >> 32); |
| 178 | } |
| 179 | } |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 180 | *val = ptr_val; |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 181 | return true; |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 182 | } else { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 183 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 184 | DCHECK(code_item != nullptr) << PrettyMethod(m); // Can't be NULL or how would we compile |
| 185 | // its instructions? |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 186 | *val = *GetVRegAddr(cur_quick_frame_, code_item, frame_info.CoreSpillMask(), |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 187 | frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), vreg); |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 188 | return true; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 189 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 190 | } else { |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 191 | *val = cur_shadow_frame_->GetVReg(vreg); |
| 192 | return true; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 193 | } |
| 194 | } |
| 195 | |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 196 | bool StackVisitor::GetVRegPair(mirror::ArtMethod* m, uint16_t vreg, VRegKind kind_lo, |
| 197 | VRegKind kind_hi, uint64_t* val) const { |
| 198 | if (kind_lo == kLongLoVReg) { |
| 199 | DCHECK_EQ(kind_hi, kLongHiVReg); |
| 200 | } else if (kind_lo == kDoubleLoVReg) { |
| 201 | DCHECK_EQ(kind_hi, kDoubleHiVReg); |
| 202 | } else { |
| 203 | LOG(FATAL) << "Expected long or double: kind_lo=" << kind_lo << ", kind_hi=" << kind_hi; |
| 204 | } |
| 205 | if (cur_quick_frame_ != nullptr) { |
| 206 | DCHECK(context_ != nullptr); // You can't reliably read registers without a context. |
| 207 | DCHECK(m == GetMethod()); |
| 208 | const void* code_pointer = m->GetQuickOatCodePointer(); |
| 209 | DCHECK(code_pointer != nullptr); |
| 210 | const VmapTable vmap_table(m->GetVmapTable(code_pointer)); |
| 211 | QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(code_pointer); |
| 212 | uint32_t vmap_offset_lo, vmap_offset_hi; |
| 213 | // TODO: IsInContext stops before spotting floating point registers. |
| 214 | if (vmap_table.IsInContext(vreg, kind_lo, &vmap_offset_lo) && |
| 215 | vmap_table.IsInContext(vreg + 1, kind_hi, &vmap_offset_hi)) { |
| 216 | bool is_float = (kind_lo == kDoubleLoVReg); |
| 217 | uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask(); |
| 218 | uint32_t reg_lo = vmap_table.ComputeRegister(spill_mask, vmap_offset_lo, kind_lo); |
| 219 | uint32_t reg_hi = vmap_table.ComputeRegister(spill_mask, vmap_offset_hi, kind_hi); |
| 220 | uintptr_t ptr_val_lo, ptr_val_hi; |
| 221 | bool success = is_float ? GetFPR(reg_lo, &ptr_val_lo) : GetGPR(reg_lo, &ptr_val_lo); |
| 222 | success &= is_float ? GetFPR(reg_hi, &ptr_val_hi) : GetGPR(reg_hi, &ptr_val_hi); |
| 223 | if (!success) { |
| 224 | return false; |
| 225 | } |
| 226 | bool target64 = Is64BitInstructionSet(kRuntimeISA); |
| 227 | if (target64) { |
| 228 | int64_t value_long_lo = static_cast<int64_t>(ptr_val_lo); |
| 229 | int64_t value_long_hi = static_cast<int64_t>(ptr_val_hi); |
| 230 | ptr_val_lo = static_cast<uintptr_t>(value_long_lo & 0xFFFFFFFF); |
| 231 | ptr_val_hi = static_cast<uintptr_t>(value_long_hi >> 32); |
| 232 | } |
| 233 | *val = (static_cast<uint64_t>(ptr_val_hi) << 32) | static_cast<uint32_t>(ptr_val_lo); |
| 234 | return true; |
| 235 | } else { |
| 236 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
| 237 | DCHECK(code_item != nullptr) << PrettyMethod(m); // Can't be NULL or how would we compile |
| 238 | // its instructions? |
| 239 | uint32_t* addr = GetVRegAddr(cur_quick_frame_, code_item, frame_info.CoreSpillMask(), |
| 240 | frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), vreg); |
| 241 | *val = *reinterpret_cast<uint64_t*>(addr); |
| 242 | return true; |
| 243 | } |
| 244 | } else { |
| 245 | *val = cur_shadow_frame_->GetVRegLong(vreg); |
| 246 | return true; |
| 247 | } |
| 248 | } |
| 249 | |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 250 | bool StackVisitor::SetVReg(mirror::ArtMethod* m, uint16_t vreg, uint32_t new_value, |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 251 | VRegKind kind) { |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 252 | if (cur_quick_frame_ != nullptr) { |
| 253 | DCHECK(context_ != nullptr); // You can't reliably write registers without a context. |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 254 | DCHECK(m == GetMethod()); |
Vladimir Marko | 4c1c510 | 2014-05-14 16:51:16 +0100 | [diff] [blame] | 255 | const void* code_pointer = m->GetQuickOatCodePointer(); |
| 256 | DCHECK(code_pointer != nullptr); |
| 257 | const VmapTable vmap_table(m->GetVmapTable(code_pointer)); |
| 258 | QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(code_pointer); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 259 | uint32_t vmap_offset; |
| 260 | // TODO: IsInContext stops before spotting floating point registers. |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 261 | if (vmap_table.IsInContext(vreg, kind, &vmap_offset)) { |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 262 | bool is_float = (kind == kFloatVReg) || (kind == kDoubleLoVReg) || (kind == kDoubleHiVReg); |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 263 | uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask(); |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 264 | const uint32_t reg = vmap_table.ComputeRegister(spill_mask, vmap_offset, kind); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 265 | bool target64 = Is64BitInstructionSet(kRuntimeISA); |
buzbee | b5860fb | 2014-06-21 15:31:01 -0700 | [diff] [blame] | 266 | // Deal with 32 or 64-bit wide registers in a way that builds on all targets. |
| 267 | if (target64) { |
| 268 | bool wide_lo = (kind == kLongLoVReg) || (kind == kDoubleLoVReg); |
| 269 | bool wide_hi = (kind == kLongHiVReg) || (kind == kDoubleHiVReg); |
| 270 | if (wide_lo || wide_hi) { |
| 271 | uintptr_t old_reg_val; |
| 272 | bool success = is_float ? GetFPR(reg, &old_reg_val) : GetGPR(reg, &old_reg_val); |
| 273 | if (!success) { |
| 274 | return false; |
| 275 | } |
| 276 | uint64_t new_vreg_portion = static_cast<uint64_t>(new_value); |
| 277 | uint64_t old_reg_val_as_wide = static_cast<uint64_t>(old_reg_val); |
| 278 | uint64_t mask = 0xffffffff; |
| 279 | if (wide_lo) { |
| 280 | mask = mask << 32; |
| 281 | } else { |
| 282 | new_vreg_portion = new_vreg_portion << 32; |
| 283 | } |
| 284 | new_value = static_cast<uintptr_t>((old_reg_val_as_wide & mask) | new_vreg_portion); |
| 285 | } |
| 286 | } |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 287 | if (is_float) { |
| 288 | return SetFPR(reg, new_value); |
| 289 | } else { |
| 290 | return SetGPR(reg, new_value); |
| 291 | } |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 292 | } else { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 293 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 294 | DCHECK(code_item != nullptr) << PrettyMethod(m); // Can't be NULL or how would we compile |
| 295 | // its instructions? |
| 296 | uint32_t* addr = GetVRegAddr(cur_quick_frame_, code_item, frame_info.CoreSpillMask(), |
| 297 | frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), vreg); |
| 298 | *addr = new_value; |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 299 | return true; |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 300 | } |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 301 | } else { |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 302 | cur_shadow_frame_->SetVReg(vreg, new_value); |
| 303 | return true; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 304 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 305 | } |
| 306 | |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 307 | bool StackVisitor::SetVRegPair(mirror::ArtMethod* m, uint16_t vreg, uint64_t new_value, |
| 308 | VRegKind kind_lo, VRegKind kind_hi) { |
| 309 | if (kind_lo == kLongLoVReg) { |
| 310 | DCHECK_EQ(kind_hi, kLongHiVReg); |
| 311 | } else if (kind_lo == kDoubleLoVReg) { |
| 312 | DCHECK_EQ(kind_hi, kDoubleHiVReg); |
| 313 | } else { |
| 314 | LOG(FATAL) << "Expected long or double: kind_lo=" << kind_lo << ", kind_hi=" << kind_hi; |
| 315 | } |
| 316 | if (cur_quick_frame_ != nullptr) { |
| 317 | DCHECK(context_ != nullptr); // You can't reliably write registers without a context. |
| 318 | DCHECK(m == GetMethod()); |
| 319 | const void* code_pointer = m->GetQuickOatCodePointer(); |
| 320 | DCHECK(code_pointer != nullptr); |
| 321 | const VmapTable vmap_table(m->GetVmapTable(code_pointer)); |
| 322 | QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(code_pointer); |
| 323 | uint32_t vmap_offset_lo, vmap_offset_hi; |
| 324 | // TODO: IsInContext stops before spotting floating point registers. |
| 325 | if (vmap_table.IsInContext(vreg, kind_lo, &vmap_offset_lo) && |
| 326 | vmap_table.IsInContext(vreg + 1, kind_hi, &vmap_offset_hi)) { |
| 327 | bool is_float = (kind_lo == kDoubleLoVReg); |
| 328 | uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask(); |
| 329 | uint32_t reg_lo = vmap_table.ComputeRegister(spill_mask, vmap_offset_lo, kind_lo); |
| 330 | uint32_t reg_hi = vmap_table.ComputeRegister(spill_mask, vmap_offset_hi, kind_hi); |
| 331 | uintptr_t new_value_lo = static_cast<uintptr_t>(new_value & 0xFFFFFFFF); |
| 332 | uintptr_t new_value_hi = static_cast<uintptr_t>(new_value >> 32); |
| 333 | bool target64 = Is64BitInstructionSet(kRuntimeISA); |
| 334 | // Deal with 32 or 64-bit wide registers in a way that builds on all targets. |
| 335 | if (target64) { |
| 336 | uintptr_t old_reg_val_lo, old_reg_val_hi; |
| 337 | bool success = is_float ? GetFPR(reg_lo, &old_reg_val_lo) : GetGPR(reg_lo, &old_reg_val_lo); |
| 338 | success &= is_float ? GetFPR(reg_hi, &old_reg_val_hi) : GetGPR(reg_hi, &old_reg_val_hi); |
| 339 | if (!success) { |
| 340 | return false; |
| 341 | } |
| 342 | uint64_t new_vreg_portion_lo = static_cast<uint64_t>(new_value_lo); |
| 343 | uint64_t new_vreg_portion_hi = static_cast<uint64_t>(new_value_hi) << 32; |
| 344 | uint64_t old_reg_val_lo_as_wide = static_cast<uint64_t>(old_reg_val_lo); |
| 345 | uint64_t old_reg_val_hi_as_wide = static_cast<uint64_t>(old_reg_val_hi); |
| 346 | uint64_t mask_lo = static_cast<uint64_t>(0xffffffff) << 32; |
| 347 | uint64_t mask_hi = 0xffffffff; |
| 348 | new_value_lo = static_cast<uintptr_t>((old_reg_val_lo_as_wide & mask_lo) | new_vreg_portion_lo); |
| 349 | new_value_hi = static_cast<uintptr_t>((old_reg_val_hi_as_wide & mask_hi) | new_vreg_portion_hi); |
| 350 | } |
| 351 | bool success = is_float ? SetFPR(reg_lo, new_value_lo) : SetGPR(reg_lo, new_value_lo); |
| 352 | success &= is_float ? SetFPR(reg_hi, new_value_hi) : SetGPR(reg_hi, new_value_hi); |
| 353 | return success; |
| 354 | } else { |
| 355 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
| 356 | DCHECK(code_item != nullptr) << PrettyMethod(m); // Can't be NULL or how would we compile |
| 357 | // its instructions? |
| 358 | uint32_t* addr = GetVRegAddr(cur_quick_frame_, code_item, frame_info.CoreSpillMask(), |
| 359 | frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), vreg); |
| 360 | *reinterpret_cast<uint64_t*>(addr) = new_value; |
| 361 | return true; |
| 362 | } |
| 363 | } else { |
| 364 | cur_shadow_frame_->SetVRegLong(vreg, new_value); |
| 365 | return true; |
| 366 | } |
| 367 | } |
| 368 | |
Mathieu Chartier | 815873e | 2014-02-13 18:02:13 -0800 | [diff] [blame] | 369 | uintptr_t* StackVisitor::GetGPRAddress(uint32_t reg) const { |
| 370 | DCHECK(cur_quick_frame_ != NULL) << "This is a quick frame routine"; |
| 371 | return context_->GetGPRAddress(reg); |
| 372 | } |
| 373 | |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 374 | bool StackVisitor::GetGPR(uint32_t reg, uintptr_t* val) const { |
Brian Carlstrom | df62950 | 2013-07-17 22:39:56 -0700 | [diff] [blame] | 375 | DCHECK(cur_quick_frame_ != NULL) << "This is a quick frame routine"; |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 376 | return context_->GetGPR(reg, val); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 377 | } |
| 378 | |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 379 | bool StackVisitor::SetGPR(uint32_t reg, uintptr_t value) { |
Brian Carlstrom | df62950 | 2013-07-17 22:39:56 -0700 | [diff] [blame] | 380 | DCHECK(cur_quick_frame_ != NULL) << "This is a quick frame routine"; |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 381 | return context_->SetGPR(reg, value); |
| 382 | } |
| 383 | |
| 384 | bool StackVisitor::GetFPR(uint32_t reg, uintptr_t* val) const { |
| 385 | DCHECK(cur_quick_frame_ != NULL) << "This is a quick frame routine"; |
| 386 | return context_->GetFPR(reg, val); |
| 387 | } |
| 388 | |
| 389 | bool StackVisitor::SetFPR(uint32_t reg, uintptr_t value) { |
| 390 | DCHECK(cur_quick_frame_ != NULL) << "This is a quick frame routine"; |
| 391 | return context_->SetFPR(reg, value); |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 392 | } |
| 393 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 394 | uintptr_t StackVisitor::GetReturnPc() const { |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 395 | byte* sp = reinterpret_cast<byte*>(GetCurrentQuickFrame()); |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 396 | DCHECK(sp != NULL); |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 397 | byte* pc_addr = sp + GetMethod()->GetReturnPcOffsetInBytes(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 398 | return *reinterpret_cast<uintptr_t*>(pc_addr); |
| 399 | } |
| 400 | |
| 401 | void StackVisitor::SetReturnPc(uintptr_t new_ret_pc) { |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 402 | byte* sp = reinterpret_cast<byte*>(GetCurrentQuickFrame()); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 403 | CHECK(sp != NULL); |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 404 | byte* pc_addr = sp + GetMethod()->GetReturnPcOffsetInBytes(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 405 | *reinterpret_cast<uintptr_t*>(pc_addr) = new_ret_pc; |
| 406 | } |
| 407 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 408 | size_t StackVisitor::ComputeNumFrames(Thread* thread) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 409 | struct NumFramesVisitor : public StackVisitor { |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 410 | explicit NumFramesVisitor(Thread* thread) |
| 411 | : StackVisitor(thread, NULL), frames(0) {} |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 412 | |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 413 | bool VisitFrame() OVERRIDE { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 414 | frames++; |
| 415 | return true; |
| 416 | } |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 417 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 418 | size_t frames; |
| 419 | }; |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 420 | NumFramesVisitor visitor(thread); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 421 | visitor.WalkStack(true); |
| 422 | return visitor.frames; |
| 423 | } |
| 424 | |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 425 | bool StackVisitor::GetNextMethodAndDexPc(mirror::ArtMethod** next_method, uint32_t* next_dex_pc) { |
| 426 | struct HasMoreFramesVisitor : public StackVisitor { |
| 427 | explicit HasMoreFramesVisitor(Thread* thread, size_t num_frames, size_t frame_height) |
| 428 | : StackVisitor(thread, nullptr, num_frames), frame_height_(frame_height), |
| 429 | found_frame_(false), has_more_frames_(false), next_method_(nullptr), next_dex_pc_(0) { |
| 430 | } |
| 431 | |
| 432 | bool VisitFrame() OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 433 | if (found_frame_) { |
| 434 | mirror::ArtMethod* method = GetMethod(); |
| 435 | if (method != nullptr && !method->IsRuntimeMethod()) { |
| 436 | has_more_frames_ = true; |
| 437 | next_method_ = method; |
| 438 | next_dex_pc_ = GetDexPc(); |
| 439 | return false; // End stack walk once next method is found. |
| 440 | } |
| 441 | } else if (GetFrameHeight() == frame_height_) { |
| 442 | found_frame_ = true; |
| 443 | } |
| 444 | return true; |
| 445 | } |
| 446 | |
| 447 | size_t frame_height_; |
| 448 | bool found_frame_; |
| 449 | bool has_more_frames_; |
| 450 | mirror::ArtMethod* next_method_; |
| 451 | uint32_t next_dex_pc_; |
| 452 | }; |
| 453 | HasMoreFramesVisitor visitor(thread_, GetNumFrames(), GetFrameHeight()); |
| 454 | visitor.WalkStack(true); |
| 455 | *next_method = visitor.next_method_; |
| 456 | *next_dex_pc = visitor.next_dex_pc_; |
| 457 | return visitor.has_more_frames_; |
| 458 | } |
| 459 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 460 | void StackVisitor::DescribeStack(Thread* thread) { |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 461 | struct DescribeStackVisitor : public StackVisitor { |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 462 | explicit DescribeStackVisitor(Thread* thread) |
| 463 | : StackVisitor(thread, NULL) {} |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 464 | |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 465 | bool VisitFrame() OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 466 | LOG(INFO) << "Frame Id=" << GetFrameId() << " " << DescribeLocation(); |
| 467 | return true; |
| 468 | } |
| 469 | }; |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 470 | DescribeStackVisitor visitor(thread); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 471 | visitor.WalkStack(true); |
| 472 | } |
| 473 | |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 474 | std::string StackVisitor::DescribeLocation() const { |
| 475 | std::string result("Visiting method '"); |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 476 | mirror::ArtMethod* m = GetMethod(); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 477 | if (m == NULL) { |
| 478 | return "upcall"; |
| 479 | } |
| 480 | result += PrettyMethod(m); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 481 | result += StringPrintf("' at dex PC 0x%04x", GetDexPc()); |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 482 | if (!IsShadowFrame()) { |
| 483 | result += StringPrintf(" (native PC %p)", reinterpret_cast<void*>(GetCurrentQuickFramePc())); |
| 484 | } |
| 485 | return result; |
| 486 | } |
| 487 | |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 488 | static instrumentation::InstrumentationStackFrame& GetInstrumentationStackFrame(Thread* thread, |
| 489 | uint32_t depth) { |
| 490 | CHECK_LT(depth, thread->GetInstrumentationStack()->size()); |
| 491 | return thread->GetInstrumentationStack()->at(depth); |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 492 | } |
| 493 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 494 | void StackVisitor::SanityCheckFrame() const { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 495 | if (kIsDebugBuild) { |
| 496 | mirror::ArtMethod* method = GetMethod(); |
Mathieu Chartier | 119c6bd | 2014-05-09 14:11:47 -0700 | [diff] [blame] | 497 | CHECK_EQ(method->GetClass(), mirror::ArtMethod::GetJavaLangReflectArtMethod()); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 498 | if (cur_quick_frame_ != nullptr) { |
| 499 | method->AssertPcIsWithinQuickCode(cur_quick_frame_pc_); |
| 500 | // Frame sanity. |
| 501 | size_t frame_size = method->GetFrameSizeInBytes(); |
| 502 | CHECK_NE(frame_size, 0u); |
Andreas Gampe | 5b417b9 | 2014-03-10 14:18:35 -0700 | [diff] [blame] | 503 | // A rough guess at an upper size we expect to see for a frame. |
| 504 | // 256 registers |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 505 | // 2 words HandleScope overhead |
Andreas Gampe | 5b417b9 | 2014-03-10 14:18:35 -0700 | [diff] [blame] | 506 | // 3+3 register spills |
| 507 | // TODO: this seems architecture specific for the case of JNI frames. |
Brian Carlstrom | ed08bd4 | 2014-03-19 18:34:17 -0700 | [diff] [blame] | 508 | // TODO: 083-compiler-regressions ManyFloatArgs shows this estimate is wrong. |
| 509 | // const size_t kMaxExpectedFrameSize = (256 + 2 + 3 + 3) * sizeof(word); |
| 510 | const size_t kMaxExpectedFrameSize = 2 * KB; |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 511 | CHECK_LE(frame_size, kMaxExpectedFrameSize); |
| 512 | size_t return_pc_offset = method->GetReturnPcOffsetInBytes(); |
| 513 | CHECK_LT(return_pc_offset, frame_size); |
| 514 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 515 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 516 | } |
| 517 | |
| 518 | void StackVisitor::WalkStack(bool include_transitions) { |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 519 | DCHECK(thread_ == Thread::Current() || thread_->IsSuspended()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 520 | CHECK_EQ(cur_depth_, 0U); |
| 521 | bool exit_stubs_installed = Runtime::Current()->GetInstrumentation()->AreExitStubsInstalled(); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 522 | uint32_t instrumentation_stack_depth = 0; |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 523 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 524 | for (const ManagedStack* current_fragment = thread_->GetManagedStack(); current_fragment != NULL; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 525 | current_fragment = current_fragment->GetLink()) { |
| 526 | cur_shadow_frame_ = current_fragment->GetTopShadowFrame(); |
| 527 | cur_quick_frame_ = current_fragment->GetTopQuickFrame(); |
| 528 | cur_quick_frame_pc_ = current_fragment->GetTopQuickFramePc(); |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 529 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 530 | if (cur_quick_frame_ != NULL) { // Handle quick stack frames. |
| 531 | // Can't be both a shadow and a quick fragment. |
| 532 | DCHECK(current_fragment->GetTopShadowFrame() == NULL); |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 533 | mirror::ArtMethod* method = cur_quick_frame_->AsMirrorPtr(); |
jeffhao | 6641ea1 | 2013-01-02 18:13:42 -0800 | [diff] [blame] | 534 | while (method != NULL) { |
Dave Allison | 5cd3375 | 2014-04-15 15:57:58 -0700 | [diff] [blame] | 535 | SanityCheckFrame(); |
| 536 | bool should_continue = VisitFrame(); |
| 537 | if (UNLIKELY(!should_continue)) { |
| 538 | return; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 539 | } |
Dave Allison | 5cd3375 | 2014-04-15 15:57:58 -0700 | [diff] [blame] | 540 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 541 | if (context_ != NULL) { |
| 542 | context_->FillCalleeSaves(*this); |
| 543 | } |
| 544 | size_t frame_size = method->GetFrameSizeInBytes(); |
| 545 | // Compute PC for next stack frame from return PC. |
Vladimir Marko | 4c1c510 | 2014-05-14 16:51:16 +0100 | [diff] [blame] | 546 | size_t return_pc_offset = method->GetReturnPcOffsetInBytes(frame_size); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 547 | byte* return_pc_addr = reinterpret_cast<byte*>(cur_quick_frame_) + return_pc_offset; |
| 548 | uintptr_t return_pc = *reinterpret_cast<uintptr_t*>(return_pc_addr); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 549 | if (UNLIKELY(exit_stubs_installed)) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 550 | // While profiling, the return pc is restored from the side stack, except when walking |
| 551 | // 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] | 552 | if (GetQuickInstrumentationExitPc() == return_pc) { |
Sebastien Hertz | 74e256b | 2013-10-04 10:40:37 +0200 | [diff] [blame] | 553 | const instrumentation::InstrumentationStackFrame& instrumentation_frame = |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 554 | GetInstrumentationStackFrame(thread_, instrumentation_stack_depth); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 555 | instrumentation_stack_depth++; |
Jeff Hao | fb2802d | 2013-07-24 13:53:05 -0700 | [diff] [blame] | 556 | if (GetMethod() == Runtime::Current()->GetCalleeSaveMethod(Runtime::kSaveAll)) { |
| 557 | // Skip runtime save all callee frames which are used to deliver exceptions. |
| 558 | } else if (instrumentation_frame.interpreter_entry_) { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 559 | mirror::ArtMethod* callee = Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsAndArgs); |
Jeff Hao | fb2802d | 2013-07-24 13:53:05 -0700 | [diff] [blame] | 560 | CHECK_EQ(GetMethod(), callee) << "Expected: " << PrettyMethod(callee) << " Found: " |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 561 | << PrettyMethod(GetMethod()); |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 562 | } else if (instrumentation_frame.method_ != GetMethod()) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 563 | LOG(FATAL) << "Expected: " << PrettyMethod(instrumentation_frame.method_) |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 564 | << " Found: " << PrettyMethod(GetMethod()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 565 | } |
| 566 | if (num_frames_ != 0) { |
| 567 | // Check agreement of frame Ids only if num_frames_ is computed to avoid infinite |
| 568 | // recursion. |
| 569 | CHECK(instrumentation_frame.frame_id_ == GetFrameId()) |
| 570 | << "Expected: " << instrumentation_frame.frame_id_ |
| 571 | << " Found: " << GetFrameId(); |
| 572 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 573 | return_pc = instrumentation_frame.return_pc_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 574 | } |
| 575 | } |
| 576 | cur_quick_frame_pc_ = return_pc; |
| 577 | byte* next_frame = reinterpret_cast<byte*>(cur_quick_frame_) + frame_size; |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 578 | cur_quick_frame_ = reinterpret_cast<StackReference<mirror::ArtMethod>*>(next_frame); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 579 | cur_depth_++; |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 580 | method = cur_quick_frame_->AsMirrorPtr(); |
jeffhao | 6641ea1 | 2013-01-02 18:13:42 -0800 | [diff] [blame] | 581 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 582 | } else if (cur_shadow_frame_ != NULL) { |
| 583 | do { |
| 584 | SanityCheckFrame(); |
| 585 | bool should_continue = VisitFrame(); |
| 586 | if (UNLIKELY(!should_continue)) { |
| 587 | return; |
| 588 | } |
| 589 | cur_depth_++; |
| 590 | cur_shadow_frame_ = cur_shadow_frame_->GetLink(); |
Brian Carlstrom | df62950 | 2013-07-17 22:39:56 -0700 | [diff] [blame] | 591 | } while (cur_shadow_frame_ != NULL); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 592 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 593 | if (include_transitions) { |
| 594 | bool should_continue = VisitFrame(); |
| 595 | if (!should_continue) { |
| 596 | return; |
| 597 | } |
| 598 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 599 | cur_depth_++; |
| 600 | } |
| 601 | if (num_frames_ != 0) { |
| 602 | CHECK_EQ(cur_depth_, num_frames_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 603 | } |
| 604 | } |
| 605 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 606 | } // namespace art |