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 | |
Andreas Gampe | 46ee31b | 2016-12-14 10:11:49 -0800 | [diff] [blame] | 19 | #include "android-base/stringprintf.h" |
| 20 | |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 21 | #include "arch/context.h" |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 22 | #include "art_method-inl.h" |
Andreas Gampe | 8228cdf | 2017-05-30 15:03:54 -0700 | [diff] [blame] | 23 | #include "base/callee_save_type.h" |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 24 | #include "base/enums.h" |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 25 | #include "base/hex_dump.h" |
David Sehr | 9e734c7 | 2018-01-04 17:56:19 -0800 | [diff] [blame] | 26 | #include "dex/dex_file_types.h" |
Nicolas Geoffray | d23eeef | 2015-05-18 22:31:29 +0100 | [diff] [blame] | 27 | #include "entrypoints/entrypoint_utils-inl.h" |
Vladimir Marko | d3083dd | 2018-05-17 08:43:47 +0100 | [diff] [blame] | 28 | #include "entrypoints/quick/callee_save_frame.h" |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 29 | #include "entrypoints/runtime_asm_entrypoints.h" |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 30 | #include "gc/space/image_space.h" |
| 31 | #include "gc/space/space-inl.h" |
Vladimir Marko | 6ec2a1b | 2018-05-22 15:33:48 +0100 | [diff] [blame] | 32 | #include "interpreter/shadow_frame-inl.h" |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 33 | #include "jit/jit.h" |
| 34 | #include "jit/jit_code_cache.h" |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 35 | #include "linear_alloc.h" |
Andreas Gampe | 513061a | 2017-06-01 09:17:34 -0700 | [diff] [blame] | 36 | #include "managed_stack.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 37 | #include "mirror/class-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 38 | #include "mirror/object-inl.h" |
| 39 | #include "mirror/object_array-inl.h" |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 40 | #include "oat_quick_method_header.h" |
Vladimir Marko | 439d126 | 2019-04-12 14:45:07 +0100 | [diff] [blame] | 41 | #include "obj_ptr-inl.h" |
Vladimir Marko | 7624d25 | 2014-05-02 14:40:15 +0100 | [diff] [blame] | 42 | #include "quick/quick_method_frame_info.h" |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 43 | #include "runtime.h" |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 44 | #include "thread.h" |
Elliott Hughes | bfe487b | 2011-10-26 15:48:55 -0700 | [diff] [blame] | 45 | #include "thread_list.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 46 | |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame] | 47 | namespace art { |
| 48 | |
Andreas Gampe | 46ee31b | 2016-12-14 10:11:49 -0800 | [diff] [blame] | 49 | using android::base::StringPrintf; |
| 50 | |
Mathieu Chartier | 8405bfd | 2016-02-05 12:00:49 -0800 | [diff] [blame] | 51 | static constexpr bool kDebugStackWalk = false; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 52 | |
Hiroshi Yamauchi | 02f365f | 2017-02-03 15:06:00 -0800 | [diff] [blame] | 53 | StackVisitor::StackVisitor(Thread* thread, |
| 54 | Context* context, |
| 55 | StackWalkKind walk_kind, |
| 56 | bool check_suspended) |
| 57 | : StackVisitor(thread, context, walk_kind, 0, check_suspended) {} |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 58 | |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 59 | StackVisitor::StackVisitor(Thread* thread, |
| 60 | Context* context, |
| 61 | StackWalkKind walk_kind, |
Hiroshi Yamauchi | 02f365f | 2017-02-03 15:06:00 -0800 | [diff] [blame] | 62 | size_t num_frames, |
| 63 | bool check_suspended) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 64 | : thread_(thread), |
| 65 | walk_kind_(walk_kind), |
| 66 | cur_shadow_frame_(nullptr), |
| 67 | cur_quick_frame_(nullptr), |
| 68 | cur_quick_frame_pc_(0), |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 69 | cur_oat_quick_method_header_(nullptr), |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 70 | num_frames_(num_frames), |
| 71 | cur_depth_(0), |
Hiroshi Yamauchi | 02f365f | 2017-02-03 15:06:00 -0800 | [diff] [blame] | 72 | context_(context), |
| 73 | check_suspended_(check_suspended) { |
| 74 | if (check_suspended_) { |
| 75 | DCHECK(thread == Thread::Current() || thread->IsSuspended()) << *thread; |
| 76 | } |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 77 | } |
| 78 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 79 | ArtMethod* StackVisitor::GetMethod() const { |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 80 | if (cur_shadow_frame_ != nullptr) { |
| 81 | return cur_shadow_frame_->GetMethod(); |
| 82 | } else if (cur_quick_frame_ != nullptr) { |
| 83 | if (IsInInlinedFrame()) { |
David Srbecky | 61b28a1 | 2016-02-25 21:55:03 +0000 | [diff] [blame] | 84 | const OatQuickMethodHeader* method_header = GetCurrentOatQuickMethodHeader(); |
David Srbecky | 8cd5454 | 2018-07-15 23:58:44 +0100 | [diff] [blame] | 85 | CodeInfo code_info(method_header); |
Mathieu Chartier | 45bf250 | 2016-03-31 11:07:09 -0700 | [diff] [blame] | 86 | DCHECK(walk_kind_ != StackWalkKind::kSkipInlinedFrames); |
David Srbecky | 8cd5454 | 2018-07-15 23:58:44 +0100 | [diff] [blame] | 87 | return GetResolvedMethod(*GetCurrentQuickFrame(), code_info, current_inline_frames_); |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 88 | } else { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 89 | return *cur_quick_frame_; |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 90 | } |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 91 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 92 | return nullptr; |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 93 | } |
| 94 | |
Dave Allison | b373e09 | 2014-02-20 16:06:36 -0800 | [diff] [blame] | 95 | uint32_t StackVisitor::GetDexPc(bool abort_on_failure) const { |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 96 | if (cur_shadow_frame_ != nullptr) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 97 | return cur_shadow_frame_->GetDexPC(); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 98 | } else if (cur_quick_frame_ != nullptr) { |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 99 | if (IsInInlinedFrame()) { |
David Srbecky | 93bd361 | 2018-07-02 19:30:18 +0100 | [diff] [blame] | 100 | return current_inline_frames_.back().GetDexPc(); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 101 | } else if (cur_oat_quick_method_header_ == nullptr) { |
Andreas Gampe | e2abbc6 | 2017-09-15 11:59:26 -0700 | [diff] [blame] | 102 | return dex::kDexNoIndex; |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 103 | } else { |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 104 | return cur_oat_quick_method_header_->ToDexPc( |
| 105 | GetMethod(), cur_quick_frame_pc_, abort_on_failure); |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 106 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 107 | } else { |
| 108 | return 0; |
| 109 | } |
| 110 | } |
| 111 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 112 | extern "C" mirror::Object* artQuickGetProxyThisObject(ArtMethod** sp) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 113 | REQUIRES_SHARED(Locks::mutator_lock_); |
Sebastien Hertz | a836bc9 | 2014-11-25 16:30:53 +0100 | [diff] [blame] | 114 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 115 | mirror::Object* StackVisitor::GetThisObject() const { |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 116 | DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), kRuntimePointerSize); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 117 | ArtMethod* m = GetMethod(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 118 | if (m->IsStatic()) { |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 119 | return nullptr; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 120 | } else if (m->IsNative()) { |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 121 | if (cur_quick_frame_ != nullptr) { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 122 | HandleScope* hs = reinterpret_cast<HandleScope*>( |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 123 | reinterpret_cast<char*>(cur_quick_frame_) + sizeof(ArtMethod*)); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 124 | return hs->GetReference(0); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 125 | } else { |
| 126 | return cur_shadow_frame_->GetVRegReference(0); |
| 127 | } |
Nicolas Geoffray | 3a09092 | 2015-11-24 09:17:30 +0000 | [diff] [blame] | 128 | } else if (m->IsProxyMethod()) { |
Sebastien Hertz | a836bc9 | 2014-11-25 16:30:53 +0100 | [diff] [blame] | 129 | if (cur_quick_frame_ != nullptr) { |
| 130 | return artQuickGetProxyThisObject(cur_quick_frame_); |
| 131 | } else { |
| 132 | return cur_shadow_frame_->GetVRegReference(0); |
| 133 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 134 | } else { |
David Sehr | 0225f8e | 2018-01-31 08:52:24 +0000 | [diff] [blame] | 135 | CodeItemDataAccessor accessor(m->DexInstructionData()); |
Mathieu Chartier | 808c7a5 | 2017-12-15 11:19:33 -0800 | [diff] [blame] | 136 | if (!accessor.HasCodeItem()) { |
Ian Rogers | e0dcd46 | 2014-03-08 15:21:04 -0800 | [diff] [blame] | 137 | UNIMPLEMENTED(ERROR) << "Failed to determine this object of abstract or proxy method: " |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 138 | << ArtMethod::PrettyMethod(m); |
Ian Rogers | e0dcd46 | 2014-03-08 15:21:04 -0800 | [diff] [blame] | 139 | return nullptr; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 140 | } else { |
Mathieu Chartier | 808c7a5 | 2017-12-15 11:19:33 -0800 | [diff] [blame] | 141 | uint16_t reg = accessor.RegistersSize() - accessor.InsSize(); |
Nicolas Geoffray | 15b9d52 | 2015-03-12 15:05:13 +0000 | [diff] [blame] | 142 | uint32_t value = 0; |
Nicolas Geoffray | 4cbfadc | 2018-10-10 16:09:43 +0100 | [diff] [blame] | 143 | if (!GetVReg(m, reg, kReferenceVReg, &value)) { |
| 144 | return nullptr; |
| 145 | } |
Nicolas Geoffray | 15b9d52 | 2015-03-12 15:05:13 +0000 | [diff] [blame] | 146 | return reinterpret_cast<mirror::Object*>(value); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 147 | } |
| 148 | } |
| 149 | } |
| 150 | |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 151 | size_t StackVisitor::GetNativePcOffset() const { |
| 152 | DCHECK(!IsShadowFrame()); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 153 | return GetCurrentOatQuickMethodHeader()->NativeQuickPcOffset(cur_quick_frame_pc_); |
Ian Rogers | 0c7abda | 2012-09-19 13:33:42 -0700 | [diff] [blame] | 154 | } |
| 155 | |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 156 | bool StackVisitor::GetVRegFromDebuggerShadowFrame(uint16_t vreg, |
| 157 | VRegKind kind, |
| 158 | uint32_t* val) const { |
| 159 | size_t frame_id = const_cast<StackVisitor*>(this)->GetFrameId(); |
| 160 | ShadowFrame* shadow_frame = thread_->FindDebuggerShadowFrame(frame_id); |
| 161 | if (shadow_frame != nullptr) { |
| 162 | bool* updated_vreg_flags = thread_->GetUpdatedVRegFlags(frame_id); |
| 163 | DCHECK(updated_vreg_flags != nullptr); |
| 164 | if (updated_vreg_flags[vreg]) { |
| 165 | // Value is set by the debugger. |
| 166 | if (kind == kReferenceVReg) { |
| 167 | *val = static_cast<uint32_t>(reinterpret_cast<uintptr_t>( |
| 168 | shadow_frame->GetVRegReference(vreg))); |
| 169 | } else { |
| 170 | *val = shadow_frame->GetVReg(vreg); |
| 171 | } |
| 172 | return true; |
| 173 | } |
| 174 | } |
| 175 | // No value is set by the debugger. |
| 176 | return false; |
| 177 | } |
| 178 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 179 | bool StackVisitor::GetVReg(ArtMethod* m, uint16_t vreg, VRegKind kind, uint32_t* val) const { |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 180 | if (cur_quick_frame_ != nullptr) { |
| 181 | DCHECK(context_ != nullptr); // You can't reliably read registers without a context. |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 182 | DCHECK(m == GetMethod()); |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 183 | // Check if there is value set by the debugger. |
| 184 | if (GetVRegFromDebuggerShadowFrame(vreg, kind, val)) { |
| 185 | return true; |
| 186 | } |
Vladimir Marko | 9d07e3d | 2016-03-31 12:02:28 +0100 | [diff] [blame] | 187 | DCHECK(cur_oat_quick_method_header_->IsOptimized()); |
| 188 | return GetVRegFromOptimizedCode(m, vreg, kind, val); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 189 | } else { |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame] | 190 | DCHECK(cur_shadow_frame_ != nullptr); |
Sebastien Hertz | 0968744 | 2015-11-17 10:35:39 +0100 | [diff] [blame] | 191 | if (kind == kReferenceVReg) { |
| 192 | *val = static_cast<uint32_t>(reinterpret_cast<uintptr_t>( |
| 193 | cur_shadow_frame_->GetVRegReference(vreg))); |
| 194 | } else { |
| 195 | *val = cur_shadow_frame_->GetVReg(vreg); |
| 196 | } |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 197 | return true; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 198 | } |
| 199 | } |
| 200 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 201 | bool StackVisitor::GetVRegFromOptimizedCode(ArtMethod* m, uint16_t vreg, VRegKind kind, |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 202 | uint32_t* val) const { |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 203 | DCHECK_EQ(m, GetMethod()); |
Mathieu Chartier | 808c7a5 | 2017-12-15 11:19:33 -0800 | [diff] [blame] | 204 | // Can't be null or how would we compile its instructions? |
| 205 | DCHECK(m->GetCodeItem() != nullptr) << m->PrettyMethod(); |
David Sehr | 0225f8e | 2018-01-31 08:52:24 +0000 | [diff] [blame] | 206 | CodeItemDataAccessor accessor(m->DexInstructionData()); |
Mathieu Chartier | 808c7a5 | 2017-12-15 11:19:33 -0800 | [diff] [blame] | 207 | uint16_t number_of_dex_registers = accessor.RegistersSize(); |
| 208 | DCHECK_LT(vreg, number_of_dex_registers); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 209 | const OatQuickMethodHeader* method_header = GetCurrentOatQuickMethodHeader(); |
David Srbecky | 052f8ca | 2018-04-26 15:42:54 +0100 | [diff] [blame] | 210 | CodeInfo code_info(method_header); |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 211 | |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 212 | uint32_t native_pc_offset = method_header->NativeQuickPcOffset(cur_quick_frame_pc_); |
David Srbecky | 052f8ca | 2018-04-26 15:42:54 +0100 | [diff] [blame] | 213 | StackMap stack_map = code_info.GetStackMapForNativePcOffset(native_pc_offset); |
Nicolas Geoffray | e12997f | 2015-05-22 14:01:33 +0100 | [diff] [blame] | 214 | DCHECK(stack_map.IsValid()); |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 215 | |
| 216 | DexRegisterMap dex_register_map = IsInInlinedFrame() |
David Srbecky | 93bd361 | 2018-07-02 19:30:18 +0100 | [diff] [blame] | 217 | ? code_info.GetInlineDexRegisterMapOf(stack_map, current_inline_frames_.back()) |
David Srbecky | fd89b07 | 2018-06-03 12:00:22 +0100 | [diff] [blame] | 218 | : code_info.GetDexRegisterMapOf(stack_map); |
| 219 | if (dex_register_map.empty()) { |
Nicolas Geoffray | 012fc4e | 2016-01-08 15:58:19 +0000 | [diff] [blame] | 220 | return false; |
| 221 | } |
David Srbecky | fd89b07 | 2018-06-03 12:00:22 +0100 | [diff] [blame] | 222 | DCHECK_EQ(dex_register_map.size(), number_of_dex_registers); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 223 | DexRegisterLocation::Kind location_kind = dex_register_map[vreg].GetKind(); |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 224 | switch (location_kind) { |
Roland Levillain | a2d8ec6 | 2015-03-12 15:25:29 +0000 | [diff] [blame] | 225 | case DexRegisterLocation::Kind::kInStack: { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 226 | const int32_t offset = dex_register_map[vreg].GetStackOffsetInBytes(); |
Nicolas Geoffray | 4cbfadc | 2018-10-10 16:09:43 +0100 | [diff] [blame] | 227 | BitMemoryRegion stack_mask = code_info.GetStackMaskOf(stack_map); |
| 228 | if (kind == kReferenceVReg && !stack_mask.LoadBit(offset / kFrameSlotSize)) { |
| 229 | return false; |
| 230 | } |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 231 | const uint8_t* addr = reinterpret_cast<const uint8_t*>(cur_quick_frame_) + offset; |
| 232 | *val = *reinterpret_cast<const uint32_t*>(addr); |
| 233 | return true; |
| 234 | } |
Nicolas Geoffray | 4cbfadc | 2018-10-10 16:09:43 +0100 | [diff] [blame] | 235 | case DexRegisterLocation::Kind::kInRegister: { |
| 236 | uint32_t register_mask = code_info.GetRegisterMaskOf(stack_map); |
| 237 | uint32_t reg = dex_register_map[vreg].GetMachineRegister(); |
| 238 | if (kind == kReferenceVReg && !(register_mask & (1 << reg))) { |
| 239 | return false; |
| 240 | } |
| 241 | return GetRegisterIfAccessible(reg, kind, val); |
| 242 | } |
David Brazdil | d9cb68e | 2015-08-25 13:52:43 +0100 | [diff] [blame] | 243 | case DexRegisterLocation::Kind::kInRegisterHigh: |
| 244 | case DexRegisterLocation::Kind::kInFpuRegister: |
| 245 | case DexRegisterLocation::Kind::kInFpuRegisterHigh: { |
Nicolas Geoffray | 4cbfadc | 2018-10-10 16:09:43 +0100 | [diff] [blame] | 246 | if (kind == kReferenceVReg) { |
| 247 | return false; |
| 248 | } |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 249 | uint32_t reg = dex_register_map[vreg].GetMachineRegister(); |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 250 | return GetRegisterIfAccessible(reg, kind, val); |
| 251 | } |
Nicolas Geoffray | 4cbfadc | 2018-10-10 16:09:43 +0100 | [diff] [blame] | 252 | case DexRegisterLocation::Kind::kConstant: { |
| 253 | uint32_t result = dex_register_map[vreg].GetConstant(); |
| 254 | if (kind == kReferenceVReg && result != 0) { |
| 255 | return false; |
| 256 | } |
| 257 | *val = result; |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 258 | return true; |
Nicolas Geoffray | 4cbfadc | 2018-10-10 16:09:43 +0100 | [diff] [blame] | 259 | } |
Roland Levillain | a2d8ec6 | 2015-03-12 15:25:29 +0000 | [diff] [blame] | 260 | case DexRegisterLocation::Kind::kNone: |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 261 | return false; |
Roland Levillain | a2d8ec6 | 2015-03-12 15:25:29 +0000 | [diff] [blame] | 262 | default: |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 263 | LOG(FATAL) << "Unexpected location kind " << dex_register_map[vreg].GetKind(); |
Roland Levillain | a2d8ec6 | 2015-03-12 15:25:29 +0000 | [diff] [blame] | 264 | UNREACHABLE(); |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 265 | } |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | bool StackVisitor::GetRegisterIfAccessible(uint32_t reg, VRegKind kind, uint32_t* val) const { |
| 269 | const bool is_float = (kind == kFloatVReg) || (kind == kDoubleLoVReg) || (kind == kDoubleHiVReg); |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 270 | |
Vladimir Marko | 239d6ea | 2016-09-05 10:44:04 +0100 | [diff] [blame] | 271 | if (kRuntimeISA == InstructionSet::kX86 && is_float) { |
| 272 | // X86 float registers are 64-bit and each XMM register is provided as two separate |
| 273 | // 32-bit registers by the context. |
| 274 | reg = (kind == kDoubleHiVReg) ? (2 * reg + 1) : (2 * reg); |
| 275 | } |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 276 | |
Goran Jakovljevic | 986660c | 2015-12-10 11:44:50 +0100 | [diff] [blame] | 277 | // MIPS32 float registers are used as 64-bit (for MIPS32r2 it is pair |
| 278 | // F(2n)-F(2n+1), and for MIPS32r6 it is 64-bit register F(2n)). When |
| 279 | // accessing upper 32-bits from double, reg + 1 should be used. |
| 280 | if ((kRuntimeISA == InstructionSet::kMips) && (kind == kDoubleHiVReg)) { |
| 281 | DCHECK_ALIGNED(reg, 2); |
| 282 | reg++; |
| 283 | } |
| 284 | |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 285 | if (!IsAccessibleRegister(reg, is_float)) { |
| 286 | return false; |
| 287 | } |
| 288 | uintptr_t ptr_val = GetRegister(reg, is_float); |
| 289 | const bool target64 = Is64BitInstructionSet(kRuntimeISA); |
| 290 | if (target64) { |
| 291 | const bool wide_lo = (kind == kLongLoVReg) || (kind == kDoubleLoVReg); |
| 292 | const bool wide_hi = (kind == kLongHiVReg) || (kind == kDoubleHiVReg); |
| 293 | int64_t value_long = static_cast<int64_t>(ptr_val); |
| 294 | if (wide_lo) { |
| 295 | ptr_val = static_cast<uintptr_t>(Low32Bits(value_long)); |
| 296 | } else if (wide_hi) { |
| 297 | ptr_val = static_cast<uintptr_t>(High32Bits(value_long)); |
| 298 | } |
| 299 | } |
| 300 | *val = ptr_val; |
| 301 | return true; |
| 302 | } |
| 303 | |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 304 | bool StackVisitor::GetVRegPairFromDebuggerShadowFrame(uint16_t vreg, |
| 305 | VRegKind kind_lo, |
| 306 | VRegKind kind_hi, |
| 307 | uint64_t* val) const { |
| 308 | uint32_t low_32bits; |
| 309 | uint32_t high_32bits; |
| 310 | bool success = GetVRegFromDebuggerShadowFrame(vreg, kind_lo, &low_32bits); |
| 311 | success &= GetVRegFromDebuggerShadowFrame(vreg + 1, kind_hi, &high_32bits); |
| 312 | if (success) { |
| 313 | *val = (static_cast<uint64_t>(high_32bits) << 32) | static_cast<uint64_t>(low_32bits); |
| 314 | } |
| 315 | return success; |
| 316 | } |
| 317 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 318 | bool StackVisitor::GetVRegPair(ArtMethod* m, uint16_t vreg, VRegKind kind_lo, |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 319 | VRegKind kind_hi, uint64_t* val) const { |
| 320 | if (kind_lo == kLongLoVReg) { |
| 321 | DCHECK_EQ(kind_hi, kLongHiVReg); |
| 322 | } else if (kind_lo == kDoubleLoVReg) { |
| 323 | DCHECK_EQ(kind_hi, kDoubleHiVReg); |
| 324 | } else { |
| 325 | LOG(FATAL) << "Expected long or double: kind_lo=" << kind_lo << ", kind_hi=" << kind_hi; |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 326 | UNREACHABLE(); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 327 | } |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 328 | // Check if there is value set by the debugger. |
| 329 | if (GetVRegPairFromDebuggerShadowFrame(vreg, kind_lo, kind_hi, val)) { |
| 330 | return true; |
| 331 | } |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 332 | if (cur_quick_frame_ != nullptr) { |
| 333 | DCHECK(context_ != nullptr); // You can't reliably read registers without a context. |
| 334 | DCHECK(m == GetMethod()); |
Vladimir Marko | 9d07e3d | 2016-03-31 12:02:28 +0100 | [diff] [blame] | 335 | DCHECK(cur_oat_quick_method_header_->IsOptimized()); |
| 336 | return GetVRegPairFromOptimizedCode(m, vreg, kind_lo, kind_hi, val); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 337 | } else { |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame] | 338 | DCHECK(cur_shadow_frame_ != nullptr); |
Sebastien Hertz | c901dd7 | 2014-07-16 11:56:07 +0200 | [diff] [blame] | 339 | *val = cur_shadow_frame_->GetVRegLong(vreg); |
| 340 | return true; |
| 341 | } |
| 342 | } |
| 343 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 344 | bool StackVisitor::GetVRegPairFromOptimizedCode(ArtMethod* m, uint16_t vreg, |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 345 | VRegKind kind_lo, VRegKind kind_hi, |
| 346 | uint64_t* val) const { |
| 347 | uint32_t low_32bits; |
| 348 | uint32_t high_32bits; |
Igor Murashkin | b1d8c31 | 2015-08-04 11:18:43 -0700 | [diff] [blame] | 349 | bool success = GetVRegFromOptimizedCode(m, vreg, kind_lo, &low_32bits); |
| 350 | success &= GetVRegFromOptimizedCode(m, vreg + 1, kind_hi, &high_32bits); |
Sebastien Hertz | 7cde48c | 2015-01-20 16:06:43 +0100 | [diff] [blame] | 351 | if (success) { |
| 352 | *val = (static_cast<uint64_t>(high_32bits) << 32) | static_cast<uint64_t>(low_32bits); |
| 353 | } |
| 354 | return success; |
| 355 | } |
| 356 | |
| 357 | bool StackVisitor::GetRegisterPairIfAccessible(uint32_t reg_lo, uint32_t reg_hi, |
| 358 | VRegKind kind_lo, uint64_t* val) const { |
| 359 | const bool is_float = (kind_lo == kDoubleLoVReg); |
| 360 | if (!IsAccessibleRegister(reg_lo, is_float) || !IsAccessibleRegister(reg_hi, is_float)) { |
| 361 | return false; |
| 362 | } |
| 363 | uintptr_t ptr_val_lo = GetRegister(reg_lo, is_float); |
| 364 | uintptr_t ptr_val_hi = GetRegister(reg_hi, is_float); |
| 365 | bool target64 = Is64BitInstructionSet(kRuntimeISA); |
| 366 | if (target64) { |
| 367 | int64_t value_long_lo = static_cast<int64_t>(ptr_val_lo); |
| 368 | int64_t value_long_hi = static_cast<int64_t>(ptr_val_hi); |
| 369 | ptr_val_lo = static_cast<uintptr_t>(Low32Bits(value_long_lo)); |
| 370 | ptr_val_hi = static_cast<uintptr_t>(High32Bits(value_long_hi)); |
| 371 | } |
| 372 | *val = (static_cast<uint64_t>(ptr_val_hi) << 32) | static_cast<uint32_t>(ptr_val_lo); |
| 373 | return true; |
| 374 | } |
| 375 | |
Vladimir Marko | 439d126 | 2019-04-12 14:45:07 +0100 | [diff] [blame] | 376 | ShadowFrame* StackVisitor::PrepareSetVReg(ArtMethod* m, uint16_t vreg, bool wide) { |
David Sehr | 0225f8e | 2018-01-31 08:52:24 +0000 | [diff] [blame] | 377 | CodeItemDataAccessor accessor(m->DexInstructionData()); |
Mathieu Chartier | 808c7a5 | 2017-12-15 11:19:33 -0800 | [diff] [blame] | 378 | if (!accessor.HasCodeItem()) { |
Vladimir Marko | 439d126 | 2019-04-12 14:45:07 +0100 | [diff] [blame] | 379 | return nullptr; |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 380 | } |
| 381 | ShadowFrame* shadow_frame = GetCurrentShadowFrame(); |
| 382 | if (shadow_frame == nullptr) { |
| 383 | // This is a compiled frame: we must prepare and update a shadow frame that will |
| 384 | // be executed by the interpreter after deoptimization of the stack. |
| 385 | const size_t frame_id = GetFrameId(); |
Mathieu Chartier | 808c7a5 | 2017-12-15 11:19:33 -0800 | [diff] [blame] | 386 | const uint16_t num_regs = accessor.RegistersSize(); |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 387 | shadow_frame = thread_->FindOrCreateDebuggerShadowFrame(frame_id, num_regs, m, GetDexPc()); |
| 388 | CHECK(shadow_frame != nullptr); |
Vladimir Marko | 439d126 | 2019-04-12 14:45:07 +0100 | [diff] [blame] | 389 | // Remember the vreg(s) has been set for debugging and must not be overwritten by the |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 390 | // original value during deoptimization of the stack. |
| 391 | thread_->GetUpdatedVRegFlags(frame_id)[vreg] = true; |
Vladimir Marko | 439d126 | 2019-04-12 14:45:07 +0100 | [diff] [blame] | 392 | if (wide) { |
| 393 | thread_->GetUpdatedVRegFlags(frame_id)[vreg + 1] = true; |
| 394 | } |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 395 | } |
Vladimir Marko | 439d126 | 2019-04-12 14:45:07 +0100 | [diff] [blame] | 396 | return shadow_frame; |
| 397 | } |
| 398 | |
| 399 | bool StackVisitor::SetVReg(ArtMethod* m, uint16_t vreg, uint32_t new_value, VRegKind kind) { |
| 400 | DCHECK(kind == kIntVReg || kind == kFloatVReg); |
| 401 | ShadowFrame* shadow_frame = PrepareSetVReg(m, vreg, /* wide= */ false); |
| 402 | if (shadow_frame == nullptr) { |
| 403 | return false; |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 404 | } |
Vladimir Marko | 439d126 | 2019-04-12 14:45:07 +0100 | [diff] [blame] | 405 | shadow_frame->SetVReg(vreg, new_value); |
| 406 | return true; |
| 407 | } |
| 408 | |
| 409 | bool StackVisitor::SetVRegReference(ArtMethod* m, uint16_t vreg, ObjPtr<mirror::Object> new_value) { |
| 410 | ShadowFrame* shadow_frame = PrepareSetVReg(m, vreg, /* wide= */ false); |
| 411 | if (shadow_frame == nullptr) { |
| 412 | return false; |
| 413 | } |
| 414 | shadow_frame->SetVRegReference(vreg, new_value); |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 415 | return true; |
| 416 | } |
| 417 | |
Mingyao Yang | 636b925 | 2015-07-31 16:40:24 -0700 | [diff] [blame] | 418 | bool StackVisitor::SetVRegPair(ArtMethod* m, |
| 419 | uint16_t vreg, |
| 420 | uint64_t new_value, |
| 421 | VRegKind kind_lo, |
| 422 | VRegKind kind_hi) { |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 423 | if (kind_lo == kLongLoVReg) { |
| 424 | DCHECK_EQ(kind_hi, kLongHiVReg); |
| 425 | } else if (kind_lo == kDoubleLoVReg) { |
| 426 | DCHECK_EQ(kind_hi, kDoubleHiVReg); |
| 427 | } else { |
| 428 | LOG(FATAL) << "Expected long or double: kind_lo=" << kind_lo << ", kind_hi=" << kind_hi; |
| 429 | UNREACHABLE(); |
| 430 | } |
Vladimir Marko | 439d126 | 2019-04-12 14:45:07 +0100 | [diff] [blame] | 431 | ShadowFrame* shadow_frame = PrepareSetVReg(m, vreg, /* wide= */ true); |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 432 | if (shadow_frame == nullptr) { |
Vladimir Marko | 439d126 | 2019-04-12 14:45:07 +0100 | [diff] [blame] | 433 | return false; |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 434 | } |
| 435 | shadow_frame->SetVRegLong(vreg, new_value); |
| 436 | return true; |
| 437 | } |
| 438 | |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame] | 439 | bool StackVisitor::IsAccessibleGPR(uint32_t reg) const { |
| 440 | DCHECK(context_ != nullptr); |
| 441 | return context_->IsAccessibleGPR(reg); |
| 442 | } |
| 443 | |
Mathieu Chartier | 815873e | 2014-02-13 18:02:13 -0800 | [diff] [blame] | 444 | uintptr_t* StackVisitor::GetGPRAddress(uint32_t reg) const { |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame] | 445 | DCHECK(cur_quick_frame_ != nullptr) << "This is a quick frame routine"; |
| 446 | DCHECK(context_ != nullptr); |
Mathieu Chartier | 815873e | 2014-02-13 18:02:13 -0800 | [diff] [blame] | 447 | return context_->GetGPRAddress(reg); |
| 448 | } |
| 449 | |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame] | 450 | uintptr_t StackVisitor::GetGPR(uint32_t reg) const { |
| 451 | DCHECK(cur_quick_frame_ != nullptr) << "This is a quick frame routine"; |
| 452 | DCHECK(context_ != nullptr); |
| 453 | return context_->GetGPR(reg); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 454 | } |
| 455 | |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame] | 456 | bool StackVisitor::IsAccessibleFPR(uint32_t reg) const { |
| 457 | DCHECK(context_ != nullptr); |
| 458 | return context_->IsAccessibleFPR(reg); |
Sebastien Hertz | 0bcb290 | 2014-06-17 15:52:45 +0200 | [diff] [blame] | 459 | } |
| 460 | |
Sebastien Hertz | 96ba8dc | 2015-01-22 18:57:14 +0100 | [diff] [blame] | 461 | uintptr_t StackVisitor::GetFPR(uint32_t reg) const { |
| 462 | DCHECK(cur_quick_frame_ != nullptr) << "This is a quick frame routine"; |
| 463 | DCHECK(context_ != nullptr); |
| 464 | return context_->GetFPR(reg); |
| 465 | } |
| 466 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 467 | uintptr_t StackVisitor::GetReturnPc() const { |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 468 | uint8_t* sp = reinterpret_cast<uint8_t*>(GetCurrentQuickFrame()); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 469 | DCHECK(sp != nullptr); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 470 | uint8_t* pc_addr = sp + GetCurrentQuickFrameInfo().GetReturnPcOffset(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 471 | return *reinterpret_cast<uintptr_t*>(pc_addr); |
| 472 | } |
| 473 | |
| 474 | void StackVisitor::SetReturnPc(uintptr_t new_ret_pc) { |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 475 | uint8_t* sp = reinterpret_cast<uint8_t*>(GetCurrentQuickFrame()); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 476 | CHECK(sp != nullptr); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 477 | uint8_t* pc_addr = sp + GetCurrentQuickFrameInfo().GetReturnPcOffset(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 478 | *reinterpret_cast<uintptr_t*>(pc_addr) = new_ret_pc; |
| 479 | } |
| 480 | |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 481 | size_t StackVisitor::ComputeNumFrames(Thread* thread, StackWalkKind walk_kind) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 482 | struct NumFramesVisitor : public StackVisitor { |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 483 | NumFramesVisitor(Thread* thread_in, StackWalkKind walk_kind_in) |
| 484 | : StackVisitor(thread_in, nullptr, walk_kind_in), frames(0) {} |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 485 | |
Roland Levillain | bbc6e7e | 2018-08-24 16:58:47 +0100 | [diff] [blame] | 486 | bool VisitFrame() override { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 487 | frames++; |
| 488 | return true; |
| 489 | } |
Elliott Hughes | 08fc03a | 2012-06-26 17:34:00 -0700 | [diff] [blame] | 490 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 491 | size_t frames; |
| 492 | }; |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 493 | NumFramesVisitor visitor(thread, walk_kind); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 494 | visitor.WalkStack(true); |
| 495 | return visitor.frames; |
| 496 | } |
| 497 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 498 | bool StackVisitor::GetNextMethodAndDexPc(ArtMethod** next_method, uint32_t* next_dex_pc) { |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 499 | struct HasMoreFramesVisitor : public StackVisitor { |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 500 | HasMoreFramesVisitor(Thread* thread, |
| 501 | StackWalkKind walk_kind, |
| 502 | size_t num_frames, |
| 503 | size_t frame_height) |
| 504 | : StackVisitor(thread, nullptr, walk_kind, num_frames), |
| 505 | frame_height_(frame_height), |
| 506 | found_frame_(false), |
| 507 | has_more_frames_(false), |
| 508 | next_method_(nullptr), |
| 509 | next_dex_pc_(0) { |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 510 | } |
| 511 | |
Roland Levillain | bbc6e7e | 2018-08-24 16:58:47 +0100 | [diff] [blame] | 512 | bool VisitFrame() override REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 513 | if (found_frame_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 514 | ArtMethod* method = GetMethod(); |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 515 | if (method != nullptr && !method->IsRuntimeMethod()) { |
| 516 | has_more_frames_ = true; |
| 517 | next_method_ = method; |
| 518 | next_dex_pc_ = GetDexPc(); |
| 519 | return false; // End stack walk once next method is found. |
| 520 | } |
| 521 | } else if (GetFrameHeight() == frame_height_) { |
| 522 | found_frame_ = true; |
| 523 | } |
| 524 | return true; |
| 525 | } |
| 526 | |
| 527 | size_t frame_height_; |
| 528 | bool found_frame_; |
| 529 | bool has_more_frames_; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 530 | ArtMethod* next_method_; |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 531 | uint32_t next_dex_pc_; |
| 532 | }; |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 533 | HasMoreFramesVisitor visitor(thread_, walk_kind_, GetNumFrames(), GetFrameHeight()); |
Ian Rogers | 5cf9819 | 2014-05-29 21:31:50 -0700 | [diff] [blame] | 534 | visitor.WalkStack(true); |
| 535 | *next_method = visitor.next_method_; |
| 536 | *next_dex_pc = visitor.next_dex_pc_; |
| 537 | return visitor.has_more_frames_; |
| 538 | } |
| 539 | |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 540 | void StackVisitor::DescribeStack(Thread* thread) { |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 541 | struct DescribeStackVisitor : public StackVisitor { |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 542 | explicit DescribeStackVisitor(Thread* thread_in) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 543 | : StackVisitor(thread_in, nullptr, StackVisitor::StackWalkKind::kIncludeInlinedFrames) {} |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 544 | |
Roland Levillain | bbc6e7e | 2018-08-24 16:58:47 +0100 | [diff] [blame] | 545 | bool VisitFrame() override REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 546 | LOG(INFO) << "Frame Id=" << GetFrameId() << " " << DescribeLocation(); |
| 547 | return true; |
| 548 | } |
| 549 | }; |
Ian Rogers | 7a22fa6 | 2013-01-23 12:16:16 -0800 | [diff] [blame] | 550 | DescribeStackVisitor visitor(thread); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 551 | visitor.WalkStack(true); |
| 552 | } |
| 553 | |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 554 | std::string StackVisitor::DescribeLocation() const { |
| 555 | std::string result("Visiting method '"); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 556 | ArtMethod* m = GetMethod(); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 557 | if (m == nullptr) { |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 558 | return "upcall"; |
| 559 | } |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 560 | result += m->PrettyMethod(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 561 | result += StringPrintf("' at dex PC 0x%04x", GetDexPc()); |
Ian Rogers | 40e3bac | 2012-11-20 00:09:14 -0800 | [diff] [blame] | 562 | if (!IsShadowFrame()) { |
| 563 | result += StringPrintf(" (native PC %p)", reinterpret_cast<void*>(GetCurrentQuickFramePc())); |
| 564 | } |
| 565 | return result; |
| 566 | } |
| 567 | |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 568 | void StackVisitor::SetMethod(ArtMethod* method) { |
| 569 | DCHECK(GetMethod() != nullptr); |
| 570 | if (cur_shadow_frame_ != nullptr) { |
| 571 | cur_shadow_frame_->SetMethod(method); |
| 572 | } else { |
| 573 | DCHECK(cur_quick_frame_ != nullptr); |
Nicolas Geoffray | 226805d | 2018-12-14 10:59:02 +0000 | [diff] [blame] | 574 | CHECK(!IsInInlinedFrame()) << "We do not support setting inlined method's ArtMethod: " |
| 575 | << GetMethod()->PrettyMethod() << " is inlined into " |
| 576 | << GetOuterMethod()->PrettyMethod(); |
Alex Light | 1ebe4fe | 2017-01-30 14:57:11 -0800 | [diff] [blame] | 577 | *cur_quick_frame_ = method; |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 578 | } |
| 579 | } |
| 580 | |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 581 | static void AssertPcIsWithinQuickCode(ArtMethod* method, uintptr_t pc) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 582 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 583 | if (method->IsNative() || method->IsRuntimeMethod() || method->IsProxyMethod()) { |
| 584 | return; |
| 585 | } |
| 586 | |
| 587 | if (pc == reinterpret_cast<uintptr_t>(GetQuickInstrumentationExitPc())) { |
| 588 | return; |
| 589 | } |
| 590 | |
Mingyao Yang | 88ca8ba | 2017-05-23 14:21:07 -0700 | [diff] [blame] | 591 | Runtime* runtime = Runtime::Current(); |
| 592 | if (runtime->UseJitCompilation() && |
| 593 | runtime->GetJit()->GetCodeCache()->ContainsPc(reinterpret_cast<const void*>(pc))) { |
| 594 | return; |
| 595 | } |
| 596 | |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 597 | const void* code = method->GetEntryPointFromQuickCompiledCode(); |
Alex Light | db01a09 | 2017-04-03 15:39:55 -0700 | [diff] [blame] | 598 | if (code == GetQuickInstrumentationEntryPoint() || code == GetInvokeObsoleteMethodStub()) { |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 599 | return; |
| 600 | } |
| 601 | |
| 602 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 603 | if (class_linker->IsQuickToInterpreterBridge(code) || |
| 604 | class_linker->IsQuickResolutionStub(code)) { |
| 605 | return; |
| 606 | } |
| 607 | |
Calin Juravle | ffc8707 | 2016-04-20 14:22:09 +0100 | [diff] [blame] | 608 | if (runtime->UseJitCompilation() && runtime->GetJit()->GetCodeCache()->ContainsPc(code)) { |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 609 | return; |
| 610 | } |
| 611 | |
Mingyao Yang | 063fc77 | 2016-08-02 11:02:54 -0700 | [diff] [blame] | 612 | uint32_t code_size = OatQuickMethodHeader::FromEntryPoint(code)->GetCodeSize(); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 613 | uintptr_t code_start = reinterpret_cast<uintptr_t>(code); |
| 614 | CHECK(code_start <= pc && pc <= (code_start + code_size)) |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 615 | << method->PrettyMethod() |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 616 | << " pc=" << std::hex << pc |
Roland Levillain | 0d5a281 | 2015-11-13 10:07:31 +0000 | [diff] [blame] | 617 | << " code_start=" << code_start |
| 618 | << " code_size=" << code_size; |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 619 | } |
| 620 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 621 | void StackVisitor::SanityCheckFrame() const { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 622 | if (kIsDebugBuild) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 623 | ArtMethod* method = GetMethod(); |
Vladimir Marko | d93e374 | 2018-07-18 10:58:13 +0100 | [diff] [blame] | 624 | ObjPtr<mirror::Class> declaring_class = method->GetDeclaringClass(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 625 | // Runtime methods have null declaring class. |
| 626 | if (!method->IsRuntimeMethod()) { |
| 627 | CHECK(declaring_class != nullptr); |
| 628 | CHECK_EQ(declaring_class->GetClass(), declaring_class->GetClass()->GetClass()) |
| 629 | << declaring_class; |
| 630 | } else { |
| 631 | CHECK(declaring_class == nullptr); |
| 632 | } |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 633 | Runtime* const runtime = Runtime::Current(); |
| 634 | LinearAlloc* const linear_alloc = runtime->GetLinearAlloc(); |
| 635 | if (!linear_alloc->Contains(method)) { |
| 636 | // Check class linker linear allocs. |
Nicolas Geoffray | 48b40cc | 2017-08-07 16:52:40 +0100 | [diff] [blame] | 637 | // We get the canonical method as copied methods may have their declaring |
| 638 | // class from another class loader. |
| 639 | ArtMethod* canonical = method->GetCanonicalMethod(); |
Vladimir Marko | d93e374 | 2018-07-18 10:58:13 +0100 | [diff] [blame] | 640 | ObjPtr<mirror::Class> klass = canonical->GetDeclaringClass(); |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 641 | LinearAlloc* const class_linear_alloc = (klass != nullptr) |
Mathieu Chartier | 5b83050 | 2016-03-02 10:30:23 -0800 | [diff] [blame] | 642 | ? runtime->GetClassLinker()->GetAllocatorForClassLoader(klass->GetClassLoader()) |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 643 | : linear_alloc; |
Nicolas Geoffray | 48b40cc | 2017-08-07 16:52:40 +0100 | [diff] [blame] | 644 | if (!class_linear_alloc->Contains(canonical)) { |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 645 | // Check image space. |
| 646 | bool in_image = false; |
| 647 | for (auto& space : runtime->GetHeap()->GetContinuousSpaces()) { |
| 648 | if (space->IsImageSpace()) { |
| 649 | auto* image_space = space->AsImageSpace(); |
| 650 | const auto& header = image_space->GetImageHeader(); |
Mathieu Chartier | e42888f | 2016-04-14 10:49:19 -0700 | [diff] [blame] | 651 | const ImageSection& methods = header.GetMethodsSection(); |
| 652 | const ImageSection& runtime_methods = header.GetRuntimeMethodsSection(); |
Nicolas Geoffray | 48b40cc | 2017-08-07 16:52:40 +0100 | [diff] [blame] | 653 | const size_t offset = reinterpret_cast<const uint8_t*>(canonical) - image_space->Begin(); |
Mathieu Chartier | e42888f | 2016-04-14 10:49:19 -0700 | [diff] [blame] | 654 | if (methods.Contains(offset) || runtime_methods.Contains(offset)) { |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 655 | in_image = true; |
| 656 | break; |
| 657 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 658 | } |
| 659 | } |
Nicolas Geoffray | 48b40cc | 2017-08-07 16:52:40 +0100 | [diff] [blame] | 660 | CHECK(in_image) << canonical->PrettyMethod() << " not in linear alloc or image"; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 661 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 662 | } |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 663 | if (cur_quick_frame_ != nullptr) { |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 664 | AssertPcIsWithinQuickCode(method, cur_quick_frame_pc_); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 665 | // Frame sanity. |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 666 | size_t frame_size = GetCurrentQuickFrameInfo().FrameSizeInBytes(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 667 | CHECK_NE(frame_size, 0u); |
Andreas Gampe | 5b417b9 | 2014-03-10 14:18:35 -0700 | [diff] [blame] | 668 | // A rough guess at an upper size we expect to see for a frame. |
| 669 | // 256 registers |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 670 | // 2 words HandleScope overhead |
Andreas Gampe | 5b417b9 | 2014-03-10 14:18:35 -0700 | [diff] [blame] | 671 | // 3+3 register spills |
| 672 | // TODO: this seems architecture specific for the case of JNI frames. |
Brian Carlstrom | ed08bd4 | 2014-03-19 18:34:17 -0700 | [diff] [blame] | 673 | // TODO: 083-compiler-regressions ManyFloatArgs shows this estimate is wrong. |
| 674 | // const size_t kMaxExpectedFrameSize = (256 + 2 + 3 + 3) * sizeof(word); |
| 675 | const size_t kMaxExpectedFrameSize = 2 * KB; |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 676 | CHECK_LE(frame_size, kMaxExpectedFrameSize) << method->PrettyMethod(); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 677 | size_t return_pc_offset = GetCurrentQuickFrameInfo().GetReturnPcOffset(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 678 | CHECK_LT(return_pc_offset, frame_size); |
| 679 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 680 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 681 | } |
| 682 | |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 683 | // Counts the number of references in the parameter list of the corresponding method. |
| 684 | // Note: Thus does _not_ include "this" for non-static methods. |
| 685 | static uint32_t GetNumberOfReferenceArgsWithoutReceiver(ArtMethod* method) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 686 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 687 | uint32_t shorty_len; |
| 688 | const char* shorty = method->GetShorty(&shorty_len); |
| 689 | uint32_t refs = 0; |
| 690 | for (uint32_t i = 1; i < shorty_len ; ++i) { |
| 691 | if (shorty[i] == 'L') { |
| 692 | refs++; |
| 693 | } |
| 694 | } |
| 695 | return refs; |
| 696 | } |
| 697 | |
| 698 | QuickMethodFrameInfo StackVisitor::GetCurrentQuickFrameInfo() const { |
| 699 | if (cur_oat_quick_method_header_ != nullptr) { |
| 700 | return cur_oat_quick_method_header_->GetFrameInfo(); |
| 701 | } |
| 702 | |
| 703 | ArtMethod* method = GetMethod(); |
| 704 | Runtime* runtime = Runtime::Current(); |
| 705 | |
| 706 | if (method->IsAbstract()) { |
Vladimir Marko | d3083dd | 2018-05-17 08:43:47 +0100 | [diff] [blame] | 707 | return RuntimeCalleeSaveFrame::GetMethodFrameInfo(CalleeSaveType::kSaveRefsAndArgs); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 708 | } |
| 709 | |
| 710 | // This goes before IsProxyMethod since runtime methods have a null declaring class. |
| 711 | if (method->IsRuntimeMethod()) { |
| 712 | return runtime->GetRuntimeMethodFrameInfo(method); |
| 713 | } |
| 714 | |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 715 | if (method->IsProxyMethod()) { |
Nicolas Geoffray | 22cf3d3 | 2015-11-02 11:57:11 +0000 | [diff] [blame] | 716 | // There is only one direct method of a proxy class: the constructor. A direct method is |
| 717 | // cloned from the original java.lang.reflect.Proxy and is executed as usual quick |
| 718 | // compiled method without any stubs. Therefore the method must have a OatQuickMethodHeader. |
| 719 | DCHECK(!method->IsDirect() && !method->IsConstructor()) |
| 720 | << "Constructors of proxy classes must have a OatQuickMethodHeader"; |
Vladimir Marko | d3083dd | 2018-05-17 08:43:47 +0100 | [diff] [blame] | 721 | return RuntimeCalleeSaveFrame::GetMethodFrameInfo(CalleeSaveType::kSaveRefsAndArgs); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 722 | } |
| 723 | |
Vladimir Marko | 2196c65 | 2017-11-30 16:16:07 +0000 | [diff] [blame] | 724 | // The only remaining case is if the method is native and uses the generic JNI stub, |
| 725 | // called either directly or through some (resolution, instrumentation) trampoline. |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 726 | DCHECK(method->IsNative()); |
Vladimir Marko | 2196c65 | 2017-11-30 16:16:07 +0000 | [diff] [blame] | 727 | if (kIsDebugBuild) { |
| 728 | ClassLinker* class_linker = runtime->GetClassLinker(); |
| 729 | const void* entry_point = runtime->GetInstrumentation()->GetQuickCodeFor(method, |
| 730 | kRuntimePointerSize); |
| 731 | CHECK(class_linker->IsQuickGenericJniStub(entry_point) || |
| 732 | // The current entrypoint (after filtering out trampolines) may have changed |
| 733 | // from GenericJNI to JIT-compiled stub since we have entered this frame. |
| 734 | (runtime->GetJit() != nullptr && |
| 735 | runtime->GetJit()->GetCodeCache()->ContainsPc(entry_point))) << method->PrettyMethod(); |
| 736 | } |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 737 | // Generic JNI frame. |
| 738 | uint32_t handle_refs = GetNumberOfReferenceArgsWithoutReceiver(method) + 1; |
| 739 | size_t scope_size = HandleScope::SizeOf(handle_refs); |
Vladimir Marko | d3083dd | 2018-05-17 08:43:47 +0100 | [diff] [blame] | 740 | constexpr QuickMethodFrameInfo callee_info = |
| 741 | RuntimeCalleeSaveFrame::GetMethodFrameInfo(CalleeSaveType::kSaveRefsAndArgs); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 742 | |
| 743 | // Callee saves + handle scope + method ref + alignment |
| 744 | // Note: -sizeof(void*) since callee-save frame stores a whole method pointer. |
| 745 | size_t frame_size = RoundUp( |
| 746 | callee_info.FrameSizeInBytes() - sizeof(void*) + sizeof(ArtMethod*) + scope_size, |
| 747 | kStackAlignment); |
| 748 | return QuickMethodFrameInfo(frame_size, callee_info.CoreSpillMask(), callee_info.FpSpillMask()); |
| 749 | } |
| 750 | |
Andreas Gampe | 585da95 | 2016-12-02 14:52:29 -0800 | [diff] [blame] | 751 | template <StackVisitor::CountTransitions kCount> |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 752 | void StackVisitor::WalkStack(bool include_transitions) { |
Hiroshi Yamauchi | 02f365f | 2017-02-03 15:06:00 -0800 | [diff] [blame] | 753 | if (check_suspended_) { |
| 754 | DCHECK(thread_ == Thread::Current() || thread_->IsSuspended()); |
| 755 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 756 | CHECK_EQ(cur_depth_, 0U); |
| 757 | bool exit_stubs_installed = Runtime::Current()->GetInstrumentation()->AreExitStubsInstalled(); |
Alex Light | b81a984 | 2016-12-15 00:59:05 +0000 | [diff] [blame] | 758 | uint32_t instrumentation_stack_depth = 0; |
Sebastien Hertz | b2feaaf | 2015-10-12 13:40:10 +0000 | [diff] [blame] | 759 | size_t inlined_frames_count = 0; |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 760 | |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 761 | for (const ManagedStack* current_fragment = thread_->GetManagedStack(); |
| 762 | current_fragment != nullptr; current_fragment = current_fragment->GetLink()) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 763 | cur_shadow_frame_ = current_fragment->GetTopShadowFrame(); |
| 764 | cur_quick_frame_ = current_fragment->GetTopQuickFrame(); |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 765 | cur_quick_frame_pc_ = 0; |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 766 | cur_oat_quick_method_header_ = nullptr; |
Dave Allison | f943914 | 2014-03-27 15:10:22 -0700 | [diff] [blame] | 767 | |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 768 | if (cur_quick_frame_ != nullptr) { // Handle quick stack frames. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 769 | // Can't be both a shadow and a quick fragment. |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 770 | DCHECK(current_fragment->GetTopShadowFrame() == nullptr); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 771 | ArtMethod* method = *cur_quick_frame_; |
Vladimir Marko | 2196c65 | 2017-11-30 16:16:07 +0000 | [diff] [blame] | 772 | DCHECK(method != nullptr); |
| 773 | bool header_retrieved = false; |
| 774 | if (method->IsNative()) { |
| 775 | // We do not have a PC for the first frame, so we cannot simply use |
| 776 | // ArtMethod::GetOatQuickMethodHeader() as we're unable to distinguish there |
| 777 | // between GenericJNI frame and JIT-compiled JNI stub; the entrypoint may have |
| 778 | // changed since the frame was entered. The top quick frame tag indicates |
| 779 | // GenericJNI here, otherwise it's either AOT-compiled or JNI-compiled JNI stub. |
| 780 | if (UNLIKELY(current_fragment->GetTopQuickFrameTag())) { |
| 781 | // The generic JNI does not have any method header. |
| 782 | cur_oat_quick_method_header_ = nullptr; |
| 783 | } else { |
| 784 | const void* existing_entry_point = method->GetEntryPointFromQuickCompiledCode(); |
| 785 | CHECK(existing_entry_point != nullptr); |
| 786 | Runtime* runtime = Runtime::Current(); |
| 787 | ClassLinker* class_linker = runtime->GetClassLinker(); |
| 788 | // Check whether we can quickly get the header from the current entrypoint. |
| 789 | if (!class_linker->IsQuickGenericJniStub(existing_entry_point) && |
| 790 | !class_linker->IsQuickResolutionStub(existing_entry_point) && |
| 791 | existing_entry_point != GetQuickInstrumentationEntryPoint()) { |
| 792 | cur_oat_quick_method_header_ = |
| 793 | OatQuickMethodHeader::FromEntryPoint(existing_entry_point); |
| 794 | } else { |
| 795 | const void* code = method->GetOatMethodQuickCode(class_linker->GetImagePointerSize()); |
| 796 | if (code != nullptr) { |
| 797 | cur_oat_quick_method_header_ = OatQuickMethodHeader::FromEntryPoint(code); |
| 798 | } else { |
| 799 | // This must be a JITted JNI stub frame. |
| 800 | CHECK(runtime->GetJit() != nullptr); |
| 801 | code = runtime->GetJit()->GetCodeCache()->GetJniStubCode(method); |
| 802 | CHECK(code != nullptr) << method->PrettyMethod(); |
| 803 | cur_oat_quick_method_header_ = OatQuickMethodHeader::FromCodePointer(code); |
| 804 | } |
| 805 | } |
| 806 | } |
| 807 | header_retrieved = true; |
| 808 | } |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 809 | while (method != nullptr) { |
Vladimir Marko | 2196c65 | 2017-11-30 16:16:07 +0000 | [diff] [blame] | 810 | if (!header_retrieved) { |
| 811 | cur_oat_quick_method_header_ = method->GetOatQuickMethodHeader(cur_quick_frame_pc_); |
| 812 | } |
| 813 | header_retrieved = false; // Force header retrieval in next iteration. |
Dave Allison | 5cd3375 | 2014-04-15 15:57:58 -0700 | [diff] [blame] | 814 | SanityCheckFrame(); |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 815 | |
Nicolas Geoffray | c6df1e3 | 2016-07-04 10:15:47 +0100 | [diff] [blame] | 816 | if ((walk_kind_ == StackWalkKind::kIncludeInlinedFrames) |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 817 | && (cur_oat_quick_method_header_ != nullptr) |
David Srbecky | afc97bc | 2018-07-05 08:14:35 +0000 | [diff] [blame] | 818 | && cur_oat_quick_method_header_->IsOptimized() |
| 819 | // JNI methods cannot have any inlined frames. |
| 820 | && !method->IsNative()) { |
| 821 | DCHECK_NE(cur_quick_frame_pc_, 0u); |
David Srbecky | 2259f1c | 2019-01-16 23:18:30 +0000 | [diff] [blame] | 822 | current_code_info_ = CodeInfo(cur_oat_quick_method_header_, |
| 823 | CodeInfo::DecodeFlags::InlineInfoOnly); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 824 | uint32_t native_pc_offset = |
| 825 | cur_oat_quick_method_header_->NativeQuickPcOffset(cur_quick_frame_pc_); |
David Srbecky | 2259f1c | 2019-01-16 23:18:30 +0000 | [diff] [blame] | 826 | StackMap stack_map = current_code_info_.GetStackMapForNativePcOffset(native_pc_offset); |
David Srbecky | 052f8ca | 2018-04-26 15:42:54 +0100 | [diff] [blame] | 827 | if (stack_map.IsValid() && stack_map.HasInlineInfo()) { |
David Srbecky | 93bd361 | 2018-07-02 19:30:18 +0100 | [diff] [blame] | 828 | DCHECK_EQ(current_inline_frames_.size(), 0u); |
David Srbecky | 2259f1c | 2019-01-16 23:18:30 +0000 | [diff] [blame] | 829 | for (current_inline_frames_ = current_code_info_.GetInlineInfosOf(stack_map); |
David Srbecky | 93bd361 | 2018-07-02 19:30:18 +0100 | [diff] [blame] | 830 | !current_inline_frames_.empty(); |
| 831 | current_inline_frames_.pop_back()) { |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 832 | bool should_continue = VisitFrame(); |
| 833 | if (UNLIKELY(!should_continue)) { |
| 834 | return; |
| 835 | } |
Nicolas Geoffray | d23eeef | 2015-05-18 22:31:29 +0100 | [diff] [blame] | 836 | cur_depth_++; |
Sebastien Hertz | b2feaaf | 2015-10-12 13:40:10 +0000 | [diff] [blame] | 837 | inlined_frames_count++; |
Nicolas Geoffray | 57f6161 | 2015-05-15 13:20:41 +0100 | [diff] [blame] | 838 | } |
| 839 | } |
| 840 | } |
| 841 | |
Dave Allison | 5cd3375 | 2014-04-15 15:57:58 -0700 | [diff] [blame] | 842 | bool should_continue = VisitFrame(); |
| 843 | if (UNLIKELY(!should_continue)) { |
| 844 | return; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 845 | } |
Dave Allison | 5cd3375 | 2014-04-15 15:57:58 -0700 | [diff] [blame] | 846 | |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 847 | QuickMethodFrameInfo frame_info = GetCurrentQuickFrameInfo(); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 848 | if (context_ != nullptr) { |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 849 | context_->FillCalleeSaves(reinterpret_cast<uint8_t*>(cur_quick_frame_), frame_info); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 850 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 851 | // Compute PC for next stack frame from return PC. |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 852 | size_t frame_size = frame_info.FrameSizeInBytes(); |
| 853 | size_t return_pc_offset = frame_size - sizeof(void*); |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 854 | 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] | 855 | uintptr_t return_pc = *reinterpret_cast<uintptr_t*>(return_pc_addr); |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 856 | |
Alex Light | b32c6a9 | 2018-06-07 16:48:04 -0700 | [diff] [blame] | 857 | if (UNLIKELY(exit_stubs_installed || |
| 858 | reinterpret_cast<uintptr_t>(GetQuickInstrumentationExitPc()) == return_pc)) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 859 | // While profiling, the return pc is restored from the side stack, except when walking |
| 860 | // 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] | 861 | if (reinterpret_cast<uintptr_t>(GetQuickInstrumentationExitPc()) == return_pc) { |
Andreas Gampe | 585da95 | 2016-12-02 14:52:29 -0800 | [diff] [blame] | 862 | CHECK_LT(instrumentation_stack_depth, thread_->GetInstrumentationStack()->size()); |
Sebastien Hertz | 74e256b | 2013-10-04 10:40:37 +0200 | [diff] [blame] | 863 | const instrumentation::InstrumentationStackFrame& instrumentation_frame = |
Vladimir Marko | 35d5b8a | 2018-07-03 09:18:32 +0100 | [diff] [blame] | 864 | (*thread_->GetInstrumentationStack())[instrumentation_stack_depth]; |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 865 | instrumentation_stack_depth++; |
Vladimir Marko | fd36f1f | 2016-08-03 18:49:58 +0100 | [diff] [blame] | 866 | if (GetMethod() == |
Andreas Gampe | 8228cdf | 2017-05-30 15:03:54 -0700 | [diff] [blame] | 867 | Runtime::Current()->GetCalleeSaveMethod(CalleeSaveType::kSaveAllCalleeSaves)) { |
Jeff Hao | fb2802d | 2013-07-24 13:53:05 -0700 | [diff] [blame] | 868 | // Skip runtime save all callee frames which are used to deliver exceptions. |
| 869 | } else if (instrumentation_frame.interpreter_entry_) { |
Vladimir Marko | fd36f1f | 2016-08-03 18:49:58 +0100 | [diff] [blame] | 870 | ArtMethod* callee = |
Andreas Gampe | 8228cdf | 2017-05-30 15:03:54 -0700 | [diff] [blame] | 871 | Runtime::Current()->GetCalleeSaveMethod(CalleeSaveType::kSaveRefsAndArgs); |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 872 | CHECK_EQ(GetMethod(), callee) << "Expected: " << ArtMethod::PrettyMethod(callee) |
| 873 | << " Found: " << ArtMethod::PrettyMethod(GetMethod()); |
Sebastien Hertz | b2feaaf | 2015-10-12 13:40:10 +0000 | [diff] [blame] | 874 | } else { |
Alex Light | eee0bd4 | 2017-02-14 15:31:45 +0000 | [diff] [blame] | 875 | // Instrumentation generally doesn't distinguish between a method's obsolete and |
| 876 | // non-obsolete version. |
| 877 | CHECK_EQ(instrumentation_frame.method_->GetNonObsoleteMethod(), |
| 878 | GetMethod()->GetNonObsoleteMethod()) |
| 879 | << "Expected: " |
| 880 | << ArtMethod::PrettyMethod(instrumentation_frame.method_->GetNonObsoleteMethod()) |
| 881 | << " Found: " << ArtMethod::PrettyMethod(GetMethod()->GetNonObsoleteMethod()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 882 | } |
| 883 | if (num_frames_ != 0) { |
| 884 | // Check agreement of frame Ids only if num_frames_ is computed to avoid infinite |
| 885 | // recursion. |
Sebastien Hertz | b2feaaf | 2015-10-12 13:40:10 +0000 | [diff] [blame] | 886 | size_t frame_id = instrumentation::Instrumentation::ComputeFrameId( |
| 887 | thread_, |
| 888 | cur_depth_, |
| 889 | inlined_frames_count); |
| 890 | CHECK_EQ(instrumentation_frame.frame_id_, frame_id); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 891 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 892 | return_pc = instrumentation_frame.return_pc_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 893 | } |
| 894 | } |
Nicolas Geoffray | 6bc4374 | 2015-10-12 18:11:10 +0100 | [diff] [blame] | 895 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 896 | cur_quick_frame_pc_ = return_pc; |
Ian Rogers | 1373595 | 2014-10-08 12:43:28 -0700 | [diff] [blame] | 897 | uint8_t* next_frame = reinterpret_cast<uint8_t*>(cur_quick_frame_) + frame_size; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 898 | cur_quick_frame_ = reinterpret_cast<ArtMethod**>(next_frame); |
| 899 | |
| 900 | if (kDebugStackWalk) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 901 | LOG(INFO) << ArtMethod::PrettyMethod(method) << "@" << method << " size=" << frame_size |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 902 | << std::boolalpha |
| 903 | << " optimized=" << (cur_oat_quick_method_header_ != nullptr && |
| 904 | cur_oat_quick_method_header_->IsOptimized()) |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 905 | << " native=" << method->IsNative() |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 906 | << std::noboolalpha |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 907 | << " entrypoints=" << method->GetEntryPointFromQuickCompiledCode() |
Alex Light | eee0bd4 | 2017-02-14 15:31:45 +0000 | [diff] [blame] | 908 | << "," << (method->IsNative() ? method->GetEntryPointFromJni() : nullptr) |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 909 | << " next=" << *cur_quick_frame_; |
| 910 | } |
| 911 | |
Andreas Gampe | f040be6 | 2017-04-14 21:49:33 -0700 | [diff] [blame] | 912 | if (kCount == CountTransitions::kYes || !method->IsRuntimeMethod()) { |
| 913 | cur_depth_++; |
| 914 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 915 | method = *cur_quick_frame_; |
jeffhao | 6641ea1 | 2013-01-02 18:13:42 -0800 | [diff] [blame] | 916 | } |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 917 | } else if (cur_shadow_frame_ != nullptr) { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 918 | do { |
| 919 | SanityCheckFrame(); |
| 920 | bool should_continue = VisitFrame(); |
| 921 | if (UNLIKELY(!should_continue)) { |
| 922 | return; |
| 923 | } |
| 924 | cur_depth_++; |
| 925 | cur_shadow_frame_ = cur_shadow_frame_->GetLink(); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 926 | } while (cur_shadow_frame_ != nullptr); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 927 | } |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 928 | if (include_transitions) { |
| 929 | bool should_continue = VisitFrame(); |
| 930 | if (!should_continue) { |
| 931 | return; |
| 932 | } |
| 933 | } |
Andreas Gampe | 585da95 | 2016-12-02 14:52:29 -0800 | [diff] [blame] | 934 | if (kCount == CountTransitions::kYes) { |
| 935 | cur_depth_++; |
| 936 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 937 | } |
| 938 | if (num_frames_ != 0) { |
| 939 | CHECK_EQ(cur_depth_, num_frames_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 940 | } |
| 941 | } |
| 942 | |
Andreas Gampe | 585da95 | 2016-12-02 14:52:29 -0800 | [diff] [blame] | 943 | template void StackVisitor::WalkStack<StackVisitor::CountTransitions::kYes>(bool); |
| 944 | template void StackVisitor::WalkStack<StackVisitor::CountTransitions::kNo>(bool); |
| 945 | |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 946 | } // namespace art |