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" |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 21 | #include "entrypoints/runtime_asm_entrypoints.h" |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 22 | #include "mirror/art_method-inl.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 23 | #include "mirror/class-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 24 | #include "mirror/object.h" |
| 25 | #include "mirror/object-inl.h" |
| 26 | #include "mirror/object_array-inl.h" |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 27 | #include "quick/quick_method_frame_info.h" |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 28 | #include "runtime.h" |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 29 | #include "thread.h" |
Elliott Hughes | bfe487b | 2011-10-26 15:48:55 -0700 | [diff] [blame] | 30 | #include "thread_list.h" |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 31 | #include "throw_location.h" |
Mathieu Chartier | 4e30541 | 2014-02-19 10:54:44 -0800 | [diff] [blame] | 32 | #include "verify_object-inl.h" |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 33 | #include "vmap_table.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 34 | |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame] | 35 | namespace art { |
| 36 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 37 | mirror::Object* ShadowFrame::GetThisObject() const { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 38 | mirror::ArtMethod* m = GetMethod(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 39 | if (m->IsStatic()) { |
| 40 | return NULL; |
| 41 | } else if (m->IsNative()) { |
| 42 | return GetVRegReference(0); |
| 43 | } else { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 44 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 45 | CHECK(code_item != NULL) << PrettyMethod(m); |
| 46 | uint16_t reg = code_item->registers_size_ - code_item->ins_size_; |
| 47 | return GetVRegReference(reg); |
| 48 | } |
| 49 | } |
| 50 | |
Jeff Hao | e701f48 | 2013-05-24 11:50:49 -0700 | [diff] [blame] | 51 | mirror::Object* ShadowFrame::GetThisObject(uint16_t num_ins) const { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 52 | mirror::ArtMethod* m = GetMethod(); |
Jeff Hao | e701f48 | 2013-05-24 11:50:49 -0700 | [diff] [blame] | 53 | if (m->IsStatic()) { |
| 54 | return NULL; |
| 55 | } else { |
Jeff Hao | 8d44885 | 2013-06-03 17:26:19 -0700 | [diff] [blame] | 56 | return GetVRegReference(NumberOfVRegs() - num_ins); |
Jeff Hao | e701f48 | 2013-05-24 11:50:49 -0700 | [diff] [blame] | 57 | } |
| 58 | } |
| 59 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 60 | ThrowLocation ShadowFrame::GetCurrentLocationForThrow() const { |
| 61 | return ThrowLocation(GetThisObject(), GetMethod(), GetDexPC()); |
| 62 | } |
| 63 | |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 64 | size_t ManagedStack::NumJniShadowFrameReferences() const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 65 | size_t count = 0; |
| 66 | for (const ManagedStack* current_fragment = this; current_fragment != NULL; |
| 67 | current_fragment = current_fragment->GetLink()) { |
| 68 | for (ShadowFrame* current_frame = current_fragment->top_shadow_frame_; current_frame != NULL; |
| 69 | current_frame = current_frame->GetLink()) { |
TDYa127 | ce4cc0d | 2012-11-18 16:59:53 -0800 | [diff] [blame] | 70 | if (current_frame->GetMethod()->IsNative()) { |
| 71 | // The JNI ShadowFrame only contains references. (For indirect reference.) |
| 72 | count += current_frame->NumberOfVRegs(); |
| 73 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 74 | } |
| 75 | } |
| 76 | return count; |
| 77 | } |
| 78 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 79 | bool ManagedStack::ShadowFramesContain(StackReference<mirror::Object>* shadow_frame_entry) const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 80 | for (const ManagedStack* current_fragment = this; current_fragment != NULL; |
| 81 | current_fragment = current_fragment->GetLink()) { |
| 82 | for (ShadowFrame* current_frame = current_fragment->top_shadow_frame_; current_frame != NULL; |
| 83 | current_frame = current_frame->GetLink()) { |
| 84 | if (current_frame->Contains(shadow_frame_entry)) { |
| 85 | return true; |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | return false; |
| 90 | } |
| 91 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 92 | StackVisitor::StackVisitor(Thread* thread, Context* context) |
| 93 | : thread_(thread), cur_shadow_frame_(NULL), |
| 94 | cur_quick_frame_(NULL), cur_quick_frame_pc_(0), num_frames_(0), cur_depth_(0), |
| 95 | context_(context) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 96 | DCHECK(thread == Thread::Current() || thread->IsSuspended()) << *thread; |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 97 | } |
| 98 | |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 99 | StackVisitor::StackVisitor(Thread* thread, Context* context, size_t num_frames) |
| 100 | : thread_(thread), cur_shadow_frame_(NULL), |
| 101 | cur_quick_frame_(NULL), cur_quick_frame_pc_(0), num_frames_(num_frames), cur_depth_(0), |
| 102 | context_(context) { |
| 103 | DCHECK(thread == Thread::Current() || thread->IsSuspended()) << *thread; |
| 104 | } |
| 105 | |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 106 | uint32_t StackVisitor::GetDexPc(bool abort_on_failure) const { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 107 | if (cur_shadow_frame_ != NULL) { |
| 108 | return cur_shadow_frame_->GetDexPC(); |
| 109 | } else if (cur_quick_frame_ != NULL) { |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 110 | return GetMethod()->ToDexPc(cur_quick_frame_pc_, abort_on_failure); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 111 | } else { |
| 112 | return 0; |
| 113 | } |
| 114 | } |
| 115 | |
Sebastien Hertz | a836bc9 | 2014-11-25 16:30:53 +0100 | [diff] [blame] | 116 | extern "C" mirror::Object* artQuickGetProxyThisObject(StackReference<mirror::ArtMethod>* sp) |
| 117 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 118 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 119 | mirror::Object* StackVisitor::GetThisObject() const { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 120 | mirror::ArtMethod* m = GetMethod(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 121 | if (m->IsStatic()) { |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 122 | return nullptr; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 123 | } else if (m->IsNative()) { |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 124 | if (cur_quick_frame_ != nullptr) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 125 | HandleScope* hs = reinterpret_cast<HandleScope*>( |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 126 | reinterpret_cast<char*>(cur_quick_frame_) + m->GetHandleScopeOffset().SizeValue()); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 127 | return hs->GetReference(0); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 128 | } else { |
| 129 | return cur_shadow_frame_->GetVRegReference(0); |
| 130 | } |
Sebastien Hertz | a836bc9 | 2014-11-25 16:30:53 +0100 | [diff] [blame] | 131 | } else if (m->IsProxyMethod()) { |
| 132 | if (cur_quick_frame_ != nullptr) { |
| 133 | return artQuickGetProxyThisObject(cur_quick_frame_); |
| 134 | } else { |
| 135 | return cur_shadow_frame_->GetVRegReference(0); |
| 136 | } |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 137 | } else if (m->IsOptimized(sizeof(void*))) { |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 138 | // TODO: Implement, currently only used for exceptions when jdwp is enabled. |
Ian Rogers | 2c4257b | 2014-10-24 14:20:06 -0700 | [diff] [blame] | 139 | UNIMPLEMENTED(WARNING) |
| 140 | << "StackVisitor::GetThisObject is unimplemented with the optimizing compiler"; |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 141 | return nullptr; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 142 | } else { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 143 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 144 | if (code_item == nullptr) { |
Ian Rogers | e0dcd46 | 2014-03-08 15:21:04 -0800 | [diff] [blame] | 145 | UNIMPLEMENTED(ERROR) << "Failed to determine this object of abstract or proxy method: " |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 146 | << PrettyMethod(m); |
Ian Rogers | e0dcd46 | 2014-03-08 15:21:04 -0800 | [diff] [blame] | 147 | return nullptr; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 148 | } else { |
| 149 | uint16_t reg = code_item->registers_size_ - code_item->ins_size_; |
| 150 | return reinterpret_cast<mirror::Object*>(GetVReg(m, reg, kReferenceVReg)); |
| 151 | } |
| 152 | } |
| 153 | } |
| 154 | |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 155 | size_t StackVisitor::GetNativePcOffset() const { |
| 156 | DCHECK(!IsShadowFrame()); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 157 | return GetMethod()->NativeQuickPcOffset(cur_quick_frame_pc_); |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 158 | } |
| 159 | |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 160 | bool StackVisitor::GetVReg(mirror::ArtMethod* m, uint16_t vreg, VRegKind kind, |
| 161 | uint32_t* val) const { |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 162 | if (cur_quick_frame_ != nullptr) { |
| 163 | DCHECK(context_ != nullptr); // You can't reliably read registers without a context. |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 164 | DCHECK(m == GetMethod()); |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 165 | const void* code_pointer = m->GetQuickOatCodePointer(sizeof(void*)); |
Vladimir Marko | 4c1c510 | 2014-05-14 16:51:16 +0100 | [diff] [blame] | 166 | DCHECK(code_pointer != nullptr); |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 167 | const VmapTable vmap_table(m->GetVmapTable(code_pointer, sizeof(void*))); |
Vladimir Marko | 4c1c510 | 2014-05-14 16:51:16 +0100 | [diff] [blame] | 168 | QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(code_pointer); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 169 | uint32_t vmap_offset; |
| 170 | // TODO: IsInContext stops before spotting floating point registers. |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 171 | if (vmap_table.IsInContext(vreg, kind, &vmap_offset)) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 172 | bool is_float = (kind == kFloatVReg) || (kind == kDoubleLoVReg) || (kind == kDoubleHiVReg); |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 173 | uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask(); |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 174 | uint32_t reg = vmap_table.ComputeRegister(spill_mask, vmap_offset, kind); |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 175 | if (!IsAccessibleRegister(reg, is_float)) { |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 176 | return false; |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 177 | } |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 178 | uintptr_t ptr_val = GetRegister(reg, is_float); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 179 | bool target64 = Is64BitInstructionSet(kRuntimeISA); |
| 180 | if (target64) { |
buzbee | b5860fb | 2014-06-21 15:31:01 -0700 | [diff] [blame] | 181 | bool wide_lo = (kind == kLongLoVReg) || (kind == kDoubleLoVReg); |
| 182 | bool wide_hi = (kind == kLongHiVReg) || (kind == kDoubleHiVReg); |
| 183 | int64_t value_long = static_cast<int64_t>(ptr_val); |
| 184 | if (wide_lo) { |
| 185 | ptr_val = static_cast<uintptr_t>(value_long & 0xFFFFFFFF); |
| 186 | } else if (wide_hi) { |
| 187 | ptr_val = static_cast<uintptr_t>(value_long >> 32); |
| 188 | } |
| 189 | } |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 190 | *val = ptr_val; |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 191 | return true; |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 192 | } else { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 193 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 194 | DCHECK(code_item != nullptr) << PrettyMethod(m); // Can't be NULL or how would we compile |
| 195 | // its instructions? |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 196 | uint32_t* addr = GetVRegAddr(cur_quick_frame_, code_item, frame_info.CoreSpillMask(), |
| 197 | frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), vreg); |
| 198 | DCHECK(addr != nullptr); |
| 199 | *val = *addr; |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 200 | return true; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 201 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 202 | } else { |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 203 | DCHECK(cur_shadow_frame_ != nullptr); |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 204 | *val = cur_shadow_frame_->GetVReg(vreg); |
| 205 | return true; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 206 | } |
| 207 | } |
| 208 | |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 209 | bool StackVisitor::GetVRegPair(mirror::ArtMethod* m, uint16_t vreg, VRegKind kind_lo, |
| 210 | VRegKind kind_hi, uint64_t* val) const { |
| 211 | if (kind_lo == kLongLoVReg) { |
| 212 | DCHECK_EQ(kind_hi, kLongHiVReg); |
| 213 | } else if (kind_lo == kDoubleLoVReg) { |
| 214 | DCHECK_EQ(kind_hi, kDoubleHiVReg); |
| 215 | } else { |
| 216 | LOG(FATAL) << "Expected long or double: kind_lo=" << kind_lo << ", kind_hi=" << kind_hi; |
| 217 | } |
| 218 | if (cur_quick_frame_ != nullptr) { |
| 219 | DCHECK(context_ != nullptr); // You can't reliably read registers without a context. |
| 220 | DCHECK(m == GetMethod()); |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 221 | const void* code_pointer = m->GetQuickOatCodePointer(sizeof(void*)); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 222 | DCHECK(code_pointer != nullptr); |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 223 | const VmapTable vmap_table(m->GetVmapTable(code_pointer, sizeof(void*))); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 224 | QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(code_pointer); |
| 225 | uint32_t vmap_offset_lo, vmap_offset_hi; |
| 226 | // TODO: IsInContext stops before spotting floating point registers. |
| 227 | if (vmap_table.IsInContext(vreg, kind_lo, &vmap_offset_lo) && |
| 228 | vmap_table.IsInContext(vreg + 1, kind_hi, &vmap_offset_hi)) { |
| 229 | bool is_float = (kind_lo == kDoubleLoVReg); |
| 230 | uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask(); |
| 231 | uint32_t reg_lo = vmap_table.ComputeRegister(spill_mask, vmap_offset_lo, kind_lo); |
| 232 | uint32_t reg_hi = vmap_table.ComputeRegister(spill_mask, vmap_offset_hi, kind_hi); |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 233 | if (!IsAccessibleRegister(reg_lo, is_float) || !IsAccessibleRegister(reg_hi, is_float)) { |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 234 | return false; |
| 235 | } |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 236 | uintptr_t ptr_val_lo = GetRegister(reg_lo, is_float); |
| 237 | uintptr_t ptr_val_hi = GetRegister(reg_hi, is_float); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 238 | bool target64 = Is64BitInstructionSet(kRuntimeISA); |
| 239 | if (target64) { |
| 240 | int64_t value_long_lo = static_cast<int64_t>(ptr_val_lo); |
| 241 | int64_t value_long_hi = static_cast<int64_t>(ptr_val_hi); |
| 242 | ptr_val_lo = static_cast<uintptr_t>(value_long_lo & 0xFFFFFFFF); |
| 243 | ptr_val_hi = static_cast<uintptr_t>(value_long_hi >> 32); |
| 244 | } |
| 245 | *val = (static_cast<uint64_t>(ptr_val_hi) << 32) | static_cast<uint32_t>(ptr_val_lo); |
| 246 | return true; |
| 247 | } else { |
| 248 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
| 249 | DCHECK(code_item != nullptr) << PrettyMethod(m); // Can't be NULL or how would we compile |
| 250 | // its instructions? |
| 251 | uint32_t* addr = GetVRegAddr(cur_quick_frame_, code_item, frame_info.CoreSpillMask(), |
| 252 | frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), vreg); |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 253 | DCHECK(addr != nullptr); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 254 | *val = *reinterpret_cast<uint64_t*>(addr); |
| 255 | return true; |
| 256 | } |
| 257 | } else { |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 258 | DCHECK(cur_shadow_frame_ != nullptr); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 259 | *val = cur_shadow_frame_->GetVRegLong(vreg); |
| 260 | return true; |
| 261 | } |
| 262 | } |
| 263 | |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 264 | 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] | 265 | VRegKind kind) { |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 266 | if (cur_quick_frame_ != nullptr) { |
| 267 | DCHECK(context_ != nullptr); // You can't reliably write registers without a context. |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 268 | DCHECK(m == GetMethod()); |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 269 | const void* code_pointer = m->GetQuickOatCodePointer(sizeof(void*)); |
Vladimir Marko | 4c1c510 | 2014-05-14 16:51:16 +0100 | [diff] [blame] | 270 | DCHECK(code_pointer != nullptr); |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 271 | const VmapTable vmap_table(m->GetVmapTable(code_pointer, sizeof(void*))); |
Vladimir Marko | 4c1c510 | 2014-05-14 16:51:16 +0100 | [diff] [blame] | 272 | QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(code_pointer); |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 273 | uint32_t vmap_offset; |
| 274 | // TODO: IsInContext stops before spotting floating point registers. |
Ian Rogers | 1809a72 | 2013-08-09 22:05:32 -0700 | [diff] [blame] | 275 | if (vmap_table.IsInContext(vreg, kind, &vmap_offset)) { |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 276 | bool is_float = (kind == kFloatVReg) || (kind == kDoubleLoVReg) || (kind == kDoubleHiVReg); |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 277 | uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask(); |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 278 | const uint32_t reg = vmap_table.ComputeRegister(spill_mask, vmap_offset, kind); |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 279 | if (!IsAccessibleRegister(reg, is_float)) { |
| 280 | return false; |
| 281 | } |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 282 | bool target64 = Is64BitInstructionSet(kRuntimeISA); |
buzbee | b5860fb | 2014-06-21 15:31:01 -0700 | [diff] [blame] | 283 | // Deal with 32 or 64-bit wide registers in a way that builds on all targets. |
| 284 | if (target64) { |
| 285 | bool wide_lo = (kind == kLongLoVReg) || (kind == kDoubleLoVReg); |
| 286 | bool wide_hi = (kind == kLongHiVReg) || (kind == kDoubleHiVReg); |
| 287 | if (wide_lo || wide_hi) { |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 288 | uintptr_t old_reg_val = GetRegister(reg, is_float); |
buzbee | b5860fb | 2014-06-21 15:31:01 -0700 | [diff] [blame] | 289 | uint64_t new_vreg_portion = static_cast<uint64_t>(new_value); |
| 290 | uint64_t old_reg_val_as_wide = static_cast<uint64_t>(old_reg_val); |
| 291 | uint64_t mask = 0xffffffff; |
| 292 | if (wide_lo) { |
| 293 | mask = mask << 32; |
| 294 | } else { |
| 295 | new_vreg_portion = new_vreg_portion << 32; |
| 296 | } |
| 297 | new_value = static_cast<uintptr_t>((old_reg_val_as_wide & mask) | new_vreg_portion); |
| 298 | } |
| 299 | } |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 300 | SetRegister(reg, new_value, is_float); |
| 301 | return true; |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 302 | } else { |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 303 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 304 | DCHECK(code_item != nullptr) << PrettyMethod(m); // Can't be NULL or how would we compile |
| 305 | // its instructions? |
| 306 | uint32_t* addr = GetVRegAddr(cur_quick_frame_, code_item, frame_info.CoreSpillMask(), |
| 307 | frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), vreg); |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 308 | DCHECK(addr != nullptr); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 309 | *addr = new_value; |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 310 | return true; |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 311 | } |
Ian Rogers | 0ec569a | 2012-07-01 16:43:46 -0700 | [diff] [blame] | 312 | } else { |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 313 | DCHECK(cur_shadow_frame_ != nullptr); |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 314 | cur_shadow_frame_->SetVReg(vreg, new_value); |
| 315 | return true; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 316 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 317 | } |
| 318 | |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 319 | bool StackVisitor::SetVRegPair(mirror::ArtMethod* m, uint16_t vreg, uint64_t new_value, |
| 320 | VRegKind kind_lo, VRegKind kind_hi) { |
| 321 | if (kind_lo == kLongLoVReg) { |
| 322 | DCHECK_EQ(kind_hi, kLongHiVReg); |
| 323 | } else if (kind_lo == kDoubleLoVReg) { |
| 324 | DCHECK_EQ(kind_hi, kDoubleHiVReg); |
| 325 | } else { |
| 326 | LOG(FATAL) << "Expected long or double: kind_lo=" << kind_lo << ", kind_hi=" << kind_hi; |
| 327 | } |
| 328 | if (cur_quick_frame_ != nullptr) { |
| 329 | DCHECK(context_ != nullptr); // You can't reliably write registers without a context. |
| 330 | DCHECK(m == GetMethod()); |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 331 | const void* code_pointer = m->GetQuickOatCodePointer(sizeof(void*)); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 332 | DCHECK(code_pointer != nullptr); |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 333 | const VmapTable vmap_table(m->GetVmapTable(code_pointer, sizeof(void*))); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 334 | QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(code_pointer); |
| 335 | uint32_t vmap_offset_lo, vmap_offset_hi; |
| 336 | // TODO: IsInContext stops before spotting floating point registers. |
| 337 | if (vmap_table.IsInContext(vreg, kind_lo, &vmap_offset_lo) && |
| 338 | vmap_table.IsInContext(vreg + 1, kind_hi, &vmap_offset_hi)) { |
| 339 | bool is_float = (kind_lo == kDoubleLoVReg); |
| 340 | uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask(); |
| 341 | uint32_t reg_lo = vmap_table.ComputeRegister(spill_mask, vmap_offset_lo, kind_lo); |
| 342 | uint32_t reg_hi = vmap_table.ComputeRegister(spill_mask, vmap_offset_hi, kind_hi); |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 343 | if (!IsAccessibleRegister(reg_lo, is_float) || !IsAccessibleRegister(reg_hi, is_float)) { |
| 344 | return false; |
| 345 | } |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 346 | uintptr_t new_value_lo = static_cast<uintptr_t>(new_value & 0xFFFFFFFF); |
| 347 | uintptr_t new_value_hi = static_cast<uintptr_t>(new_value >> 32); |
| 348 | bool target64 = Is64BitInstructionSet(kRuntimeISA); |
| 349 | // Deal with 32 or 64-bit wide registers in a way that builds on all targets. |
| 350 | if (target64) { |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 351 | uintptr_t old_reg_val_lo = GetRegister(reg_lo, is_float); |
| 352 | uintptr_t old_reg_val_hi = GetRegister(reg_hi, is_float); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 353 | uint64_t new_vreg_portion_lo = static_cast<uint64_t>(new_value_lo); |
| 354 | uint64_t new_vreg_portion_hi = static_cast<uint64_t>(new_value_hi) << 32; |
| 355 | uint64_t old_reg_val_lo_as_wide = static_cast<uint64_t>(old_reg_val_lo); |
| 356 | uint64_t old_reg_val_hi_as_wide = static_cast<uint64_t>(old_reg_val_hi); |
| 357 | uint64_t mask_lo = static_cast<uint64_t>(0xffffffff) << 32; |
| 358 | uint64_t mask_hi = 0xffffffff; |
| 359 | new_value_lo = static_cast<uintptr_t>((old_reg_val_lo_as_wide & mask_lo) | new_vreg_portion_lo); |
| 360 | new_value_hi = static_cast<uintptr_t>((old_reg_val_hi_as_wide & mask_hi) | new_vreg_portion_hi); |
| 361 | } |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 362 | SetRegister(reg_lo, new_value_lo, is_float); |
| 363 | SetRegister(reg_hi, new_value_hi, is_float); |
| 364 | return true; |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 365 | } else { |
| 366 | const DexFile::CodeItem* code_item = m->GetCodeItem(); |
| 367 | DCHECK(code_item != nullptr) << PrettyMethod(m); // Can't be NULL or how would we compile |
| 368 | // its instructions? |
| 369 | uint32_t* addr = GetVRegAddr(cur_quick_frame_, code_item, frame_info.CoreSpillMask(), |
| 370 | frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), vreg); |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 371 | DCHECK(addr != nullptr); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 372 | *reinterpret_cast<uint64_t*>(addr) = new_value; |
| 373 | return true; |
| 374 | } |
| 375 | } else { |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 376 | DCHECK(cur_shadow_frame_ != nullptr); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 377 | cur_shadow_frame_->SetVRegLong(vreg, new_value); |
| 378 | return true; |
| 379 | } |
| 380 | } |
| 381 | |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 382 | bool StackVisitor::IsAccessibleGPR(uint32_t reg) const { |
| 383 | DCHECK(context_ != nullptr); |
| 384 | return context_->IsAccessibleGPR(reg); |
| 385 | } |
| 386 | |
Mathieu Chartier | 815873e | 2014-02-13 18:02:13 -0800 | [diff] [blame] | 387 | uintptr_t* StackVisitor::GetGPRAddress(uint32_t reg) const { |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 388 | DCHECK(cur_quick_frame_ != nullptr) << "This is a quick frame routine"; |
| 389 | DCHECK(context_ != nullptr); |
Mathieu Chartier | 815873e | 2014-02-13 18:02:13 -0800 | [diff] [blame] | 390 | return context_->GetGPRAddress(reg); |
| 391 | } |
| 392 | |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 393 | uintptr_t StackVisitor::GetGPR(uint32_t reg) const { |
| 394 | DCHECK(cur_quick_frame_ != nullptr) << "This is a quick frame routine"; |
| 395 | DCHECK(context_ != nullptr); |
| 396 | return context_->GetGPR(reg); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 397 | } |
| 398 | |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 399 | void StackVisitor::SetGPR(uint32_t reg, uintptr_t value) { |
| 400 | DCHECK(cur_quick_frame_ != nullptr) << "This is a quick frame routine"; |
| 401 | DCHECK(context_ != nullptr); |
| 402 | context_->SetGPR(reg, value); |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 403 | } |
| 404 | |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 405 | bool StackVisitor::IsAccessibleFPR(uint32_t reg) const { |
| 406 | DCHECK(context_ != nullptr); |
| 407 | return context_->IsAccessibleFPR(reg); |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 408 | } |
| 409 | |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame^] | 410 | uintptr_t StackVisitor::GetFPR(uint32_t reg) const { |
| 411 | DCHECK(cur_quick_frame_ != nullptr) << "This is a quick frame routine"; |
| 412 | DCHECK(context_ != nullptr); |
| 413 | return context_->GetFPR(reg); |
| 414 | } |
| 415 | |
| 416 | void StackVisitor::SetFPR(uint32_t reg, uintptr_t value) { |
| 417 | DCHECK(cur_quick_frame_ != nullptr) << "This is a quick frame routine"; |
| 418 | DCHECK(context_ != nullptr); |
| 419 | context_->SetFPR(reg, value); |
Mathieu Chartier | 6702243 | 2012-11-29 18:04:50 -0800 | [diff] [blame] | 420 | } |
| 421 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 422 | uintptr_t StackVisitor::GetReturnPc() const { |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 423 | uint8_t* sp = reinterpret_cast<uint8_t*>(GetCurrentQuickFrame()); |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 424 | DCHECK(sp != NULL); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 425 | uint8_t* pc_addr = sp + GetMethod()->GetReturnPcOffset().SizeValue(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 426 | return *reinterpret_cast<uintptr_t*>(pc_addr); |
| 427 | } |
| 428 | |
| 429 | void StackVisitor::SetReturnPc(uintptr_t new_ret_pc) { |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 430 | uint8_t* sp = reinterpret_cast<uint8_t*>(GetCurrentQuickFrame()); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 431 | CHECK(sp != NULL); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 432 | uint8_t* pc_addr = sp + GetMethod()->GetReturnPcOffset().SizeValue(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 433 | *reinterpret_cast<uintptr_t*>(pc_addr) = new_ret_pc; |
| 434 | } |
| 435 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 436 | size_t StackVisitor::ComputeNumFrames(Thread* thread) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 437 | struct NumFramesVisitor : public StackVisitor { |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 438 | explicit NumFramesVisitor(Thread* thread_in) |
| 439 | : StackVisitor(thread_in, NULL), frames(0) {} |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 440 | |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 441 | bool VisitFrame() OVERRIDE { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 442 | frames++; |
| 443 | return true; |
| 444 | } |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 445 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 446 | size_t frames; |
| 447 | }; |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 448 | NumFramesVisitor visitor(thread); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 449 | visitor.WalkStack(true); |
| 450 | return visitor.frames; |
| 451 | } |
| 452 | |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 453 | bool StackVisitor::GetNextMethodAndDexPc(mirror::ArtMethod** next_method, uint32_t* next_dex_pc) { |
| 454 | struct HasMoreFramesVisitor : public StackVisitor { |
| 455 | explicit HasMoreFramesVisitor(Thread* thread, size_t num_frames, size_t frame_height) |
| 456 | : StackVisitor(thread, nullptr, num_frames), frame_height_(frame_height), |
| 457 | found_frame_(false), has_more_frames_(false), next_method_(nullptr), next_dex_pc_(0) { |
| 458 | } |
| 459 | |
| 460 | bool VisitFrame() OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 461 | if (found_frame_) { |
| 462 | mirror::ArtMethod* method = GetMethod(); |
| 463 | if (method != nullptr && !method->IsRuntimeMethod()) { |
| 464 | has_more_frames_ = true; |
| 465 | next_method_ = method; |
| 466 | next_dex_pc_ = GetDexPc(); |
| 467 | return false; // End stack walk once next method is found. |
| 468 | } |
| 469 | } else if (GetFrameHeight() == frame_height_) { |
| 470 | found_frame_ = true; |
| 471 | } |
| 472 | return true; |
| 473 | } |
| 474 | |
| 475 | size_t frame_height_; |
| 476 | bool found_frame_; |
| 477 | bool has_more_frames_; |
| 478 | mirror::ArtMethod* next_method_; |
| 479 | uint32_t next_dex_pc_; |
| 480 | }; |
| 481 | HasMoreFramesVisitor visitor(thread_, GetNumFrames(), GetFrameHeight()); |
| 482 | visitor.WalkStack(true); |
| 483 | *next_method = visitor.next_method_; |
| 484 | *next_dex_pc = visitor.next_dex_pc_; |
| 485 | return visitor.has_more_frames_; |
| 486 | } |
| 487 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 488 | void StackVisitor::DescribeStack(Thread* thread) { |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 489 | struct DescribeStackVisitor : public StackVisitor { |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 490 | explicit DescribeStackVisitor(Thread* thread_in) |
| 491 | : StackVisitor(thread_in, NULL) {} |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 492 | |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 493 | bool VisitFrame() OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 494 | LOG(INFO) << "Frame Id=" << GetFrameId() << " " << DescribeLocation(); |
| 495 | return true; |
| 496 | } |
| 497 | }; |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 498 | DescribeStackVisitor visitor(thread); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 499 | visitor.WalkStack(true); |
| 500 | } |
| 501 | |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 502 | std::string StackVisitor::DescribeLocation() const { |
| 503 | std::string result("Visiting method '"); |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 504 | mirror::ArtMethod* m = GetMethod(); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 505 | if (m == NULL) { |
| 506 | return "upcall"; |
| 507 | } |
| 508 | result += PrettyMethod(m); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 509 | result += StringPrintf("' at dex PC 0x%04x", GetDexPc()); |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 510 | if (!IsShadowFrame()) { |
| 511 | result += StringPrintf(" (native PC %p)", reinterpret_cast<void*>(GetCurrentQuickFramePc())); |
| 512 | } |
| 513 | return result; |
| 514 | } |
| 515 | |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 516 | static instrumentation::InstrumentationStackFrame& GetInstrumentationStackFrame(Thread* thread, |
| 517 | uint32_t depth) { |
| 518 | CHECK_LT(depth, thread->GetInstrumentationStack()->size()); |
| 519 | return thread->GetInstrumentationStack()->at(depth); |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 520 | } |
| 521 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 522 | void StackVisitor::SanityCheckFrame() const { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 523 | if (kIsDebugBuild) { |
| 524 | mirror::ArtMethod* method = GetMethod(); |
Mathieu Chartier | 119c6bd | 2014-05-09 14:11:47 -0700 | [diff] [blame] | 525 | CHECK_EQ(method->GetClass(), mirror::ArtMethod::GetJavaLangReflectArtMethod()); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 526 | if (cur_quick_frame_ != nullptr) { |
| 527 | method->AssertPcIsWithinQuickCode(cur_quick_frame_pc_); |
| 528 | // Frame sanity. |
| 529 | size_t frame_size = method->GetFrameSizeInBytes(); |
| 530 | CHECK_NE(frame_size, 0u); |
Andreas Gampe | 5b417b9 | 2014-03-10 14:18:35 -0700 | [diff] [blame] | 531 | // A rough guess at an upper size we expect to see for a frame. |
| 532 | // 256 registers |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 533 | // 2 words HandleScope overhead |
Andreas Gampe | 5b417b9 | 2014-03-10 14:18:35 -0700 | [diff] [blame] | 534 | // 3+3 register spills |
| 535 | // TODO: this seems architecture specific for the case of JNI frames. |
Brian Carlstrom | ed08bd4 | 2014-03-19 18:34:17 -0700 | [diff] [blame] | 536 | // TODO: 083-compiler-regressions ManyFloatArgs shows this estimate is wrong. |
| 537 | // const size_t kMaxExpectedFrameSize = (256 + 2 + 3 + 3) * sizeof(word); |
| 538 | const size_t kMaxExpectedFrameSize = 2 * KB; |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 539 | CHECK_LE(frame_size, kMaxExpectedFrameSize); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 540 | size_t return_pc_offset = method->GetReturnPcOffset().SizeValue(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 541 | CHECK_LT(return_pc_offset, frame_size); |
| 542 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 543 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 544 | } |
| 545 | |
| 546 | void StackVisitor::WalkStack(bool include_transitions) { |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 547 | DCHECK(thread_ == Thread::Current() || thread_->IsSuspended()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 548 | CHECK_EQ(cur_depth_, 0U); |
| 549 | bool exit_stubs_installed = Runtime::Current()->GetInstrumentation()->AreExitStubsInstalled(); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 550 | uint32_t instrumentation_stack_depth = 0; |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 551 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 552 | for (const ManagedStack* current_fragment = thread_->GetManagedStack(); current_fragment != NULL; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 553 | current_fragment = current_fragment->GetLink()) { |
| 554 | cur_shadow_frame_ = current_fragment->GetTopShadowFrame(); |
| 555 | cur_quick_frame_ = current_fragment->GetTopQuickFrame(); |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 556 | cur_quick_frame_pc_ = 0; |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 557 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 558 | if (cur_quick_frame_ != NULL) { // Handle quick stack frames. |
| 559 | // Can't be both a shadow and a quick fragment. |
| 560 | DCHECK(current_fragment->GetTopShadowFrame() == NULL); |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 561 | mirror::ArtMethod* method = cur_quick_frame_->AsMirrorPtr(); |
jeffhao | 6641ea1 | 2013-01-02 18:13:42 -0800 | [diff] [blame] | 562 | while (method != NULL) { |
Dave Allison | 5cd3375 | 2014-04-15 15:57:58 -0700 | [diff] [blame] | 563 | SanityCheckFrame(); |
| 564 | bool should_continue = VisitFrame(); |
| 565 | if (UNLIKELY(!should_continue)) { |
| 566 | return; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 567 | } |
Dave Allison | 5cd3375 | 2014-04-15 15:57:58 -0700 | [diff] [blame] | 568 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 569 | if (context_ != NULL) { |
| 570 | context_->FillCalleeSaves(*this); |
| 571 | } |
| 572 | size_t frame_size = method->GetFrameSizeInBytes(); |
| 573 | // Compute PC for next stack frame from return PC. |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 574 | size_t return_pc_offset = method->GetReturnPcOffset(frame_size).SizeValue(); |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 575 | uint8_t* return_pc_addr = reinterpret_cast<uint8_t*>(cur_quick_frame_) + return_pc_offset; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 576 | uintptr_t return_pc = *reinterpret_cast<uintptr_t*>(return_pc_addr); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 577 | if (UNLIKELY(exit_stubs_installed)) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 578 | // While profiling, the return pc is restored from the side stack, except when walking |
| 579 | // the stack for an exception where the side stack will be unwound in VisitFrame. |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 580 | if (reinterpret_cast<uintptr_t>(GetQuickInstrumentationExitPc()) == return_pc) { |
Sebastien Hertz | 74e256b | 2013-10-04 10:40:37 +0200 | [diff] [blame] | 581 | const instrumentation::InstrumentationStackFrame& instrumentation_frame = |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 582 | GetInstrumentationStackFrame(thread_, instrumentation_stack_depth); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 583 | instrumentation_stack_depth++; |
Jeff Hao | fb2802d | 2013-07-24 13:53:05 -0700 | [diff] [blame] | 584 | if (GetMethod() == Runtime::Current()->GetCalleeSaveMethod(Runtime::kSaveAll)) { |
| 585 | // Skip runtime save all callee frames which are used to deliver exceptions. |
| 586 | } else if (instrumentation_frame.interpreter_entry_) { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 587 | mirror::ArtMethod* callee = Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsAndArgs); |
Jeff Hao | fb2802d | 2013-07-24 13:53:05 -0700 | [diff] [blame] | 588 | CHECK_EQ(GetMethod(), callee) << "Expected: " << PrettyMethod(callee) << " Found: " |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 589 | << PrettyMethod(GetMethod()); |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 590 | } else if (instrumentation_frame.method_ != GetMethod()) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 591 | LOG(FATAL) << "Expected: " << PrettyMethod(instrumentation_frame.method_) |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 592 | << " Found: " << PrettyMethod(GetMethod()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 593 | } |
| 594 | if (num_frames_ != 0) { |
| 595 | // Check agreement of frame Ids only if num_frames_ is computed to avoid infinite |
| 596 | // recursion. |
| 597 | CHECK(instrumentation_frame.frame_id_ == GetFrameId()) |
| 598 | << "Expected: " << instrumentation_frame.frame_id_ |
| 599 | << " Found: " << GetFrameId(); |
| 600 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 601 | return_pc = instrumentation_frame.return_pc_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 602 | } |
| 603 | } |
| 604 | cur_quick_frame_pc_ = return_pc; |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 605 | uint8_t* next_frame = reinterpret_cast<uint8_t*>(cur_quick_frame_) + frame_size; |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 606 | cur_quick_frame_ = reinterpret_cast<StackReference<mirror::ArtMethod>*>(next_frame); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 607 | cur_depth_++; |
Andreas Gampe | cf4035a | 2014-05-28 22:43:01 -0700 | [diff] [blame] | 608 | method = cur_quick_frame_->AsMirrorPtr(); |
jeffhao | 6641ea1 | 2013-01-02 18:13:42 -0800 | [diff] [blame] | 609 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 610 | } else if (cur_shadow_frame_ != NULL) { |
| 611 | do { |
| 612 | SanityCheckFrame(); |
| 613 | bool should_continue = VisitFrame(); |
| 614 | if (UNLIKELY(!should_continue)) { |
| 615 | return; |
| 616 | } |
| 617 | cur_depth_++; |
| 618 | cur_shadow_frame_ = cur_shadow_frame_->GetLink(); |
Brian Carlstrom | df62950 | 2013-07-17 22:39:56 -0700 | [diff] [blame] | 619 | } while (cur_shadow_frame_ != NULL); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 620 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 621 | if (include_transitions) { |
| 622 | bool should_continue = VisitFrame(); |
| 623 | if (!should_continue) { |
| 624 | return; |
| 625 | } |
| 626 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 627 | cur_depth_++; |
| 628 | } |
| 629 | if (num_frames_ != 0) { |
| 630 | CHECK_EQ(cur_depth_, num_frames_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 631 | } |
| 632 | } |
| 633 | |
Mathieu Chartier | e34fa1d | 2015-01-14 14:55:47 -0800 | [diff] [blame] | 634 | void JavaFrameRootInfo::Describe(std::ostream& os) const { |
| 635 | const StackVisitor* visitor = stack_visitor_; |
| 636 | CHECK(visitor != nullptr); |
| 637 | os << "Type=" << GetType() << " thread_id=" << GetThreadId() << " location=" << |
| 638 | visitor->DescribeLocation() << " vreg=" << vreg_; |
| 639 | } |
| 640 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 641 | } // namespace art |