Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5 | #include "src/frames.h" |
| 6 | |
| 7 | #include <sstream> |
| 8 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 9 | #include "src/ast/ast.h" |
| 10 | #include "src/ast/scopeinfo.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 11 | #include "src/base/bits.h" |
| 12 | #include "src/deoptimizer.h" |
| 13 | #include "src/frames-inl.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 14 | #include "src/full-codegen/full-codegen.h" |
| 15 | #include "src/register-configuration.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 16 | #include "src/safepoint-table.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 17 | #include "src/string-stream.h" |
| 18 | #include "src/vm-state-inl.h" |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 19 | #include "src/wasm/wasm-module.h" |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 20 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 21 | namespace v8 { |
| 22 | namespace internal { |
| 23 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 24 | ReturnAddressLocationResolver |
| 25 | StackFrame::return_address_location_resolver_ = NULL; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 26 | |
| 27 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 28 | // Iterator that supports traversing the stack handlers of a |
| 29 | // particular frame. Needs to know the top of the handler chain. |
| 30 | class StackHandlerIterator BASE_EMBEDDED { |
| 31 | public: |
| 32 | StackHandlerIterator(const StackFrame* frame, StackHandler* handler) |
| 33 | : limit_(frame->fp()), handler_(handler) { |
| 34 | // Make sure the handler has already been unwound to this frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 35 | DCHECK(frame->sp() <= handler->address()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 36 | } |
| 37 | |
| 38 | StackHandler* handler() const { return handler_; } |
| 39 | |
| 40 | bool done() { |
| 41 | return handler_ == NULL || handler_->address() > limit_; |
| 42 | } |
| 43 | void Advance() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 44 | DCHECK(!done()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 45 | handler_ = handler_->next(); |
| 46 | } |
| 47 | |
| 48 | private: |
| 49 | const Address limit_; |
| 50 | StackHandler* handler_; |
| 51 | }; |
| 52 | |
| 53 | |
| 54 | // ------------------------------------------------------------------------- |
| 55 | |
| 56 | |
| 57 | #define INITIALIZE_SINGLETON(type, field) field##_(this), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 58 | StackFrameIteratorBase::StackFrameIteratorBase(Isolate* isolate, |
| 59 | bool can_access_heap_objects) |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 60 | : isolate_(isolate), |
| 61 | STACK_FRAME_TYPE_LIST(INITIALIZE_SINGLETON) |
| 62 | frame_(NULL), handler_(NULL), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 63 | can_access_heap_objects_(can_access_heap_objects) { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 64 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 65 | #undef INITIALIZE_SINGLETON |
| 66 | |
| 67 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 68 | StackFrameIterator::StackFrameIterator(Isolate* isolate) |
| 69 | : StackFrameIteratorBase(isolate, true) { |
| 70 | Reset(isolate->thread_local_top()); |
| 71 | } |
| 72 | |
| 73 | |
| 74 | StackFrameIterator::StackFrameIterator(Isolate* isolate, ThreadLocalTop* t) |
| 75 | : StackFrameIteratorBase(isolate, true) { |
| 76 | Reset(t); |
| 77 | } |
| 78 | |
| 79 | |
| 80 | void StackFrameIterator::Advance() { |
| 81 | DCHECK(!done()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 82 | // Compute the state of the calling frame before restoring |
| 83 | // callee-saved registers and unwinding handlers. This allows the |
| 84 | // frame code that computes the caller state to access the top |
| 85 | // handler and the value of any callee-saved register if needed. |
| 86 | StackFrame::State state; |
| 87 | StackFrame::Type type = frame_->GetCallerState(&state); |
| 88 | |
| 89 | // Unwind handlers corresponding to the current frame. |
| 90 | StackHandlerIterator it(frame_, handler_); |
| 91 | while (!it.done()) it.Advance(); |
| 92 | handler_ = it.handler(); |
| 93 | |
| 94 | // Advance to the calling frame. |
| 95 | frame_ = SingletonFor(type, &state); |
| 96 | |
| 97 | // When we're done iterating over the stack frames, the handler |
| 98 | // chain must have been completely unwound. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 99 | DCHECK(!done() || handler_ == NULL); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 103 | void StackFrameIterator::Reset(ThreadLocalTop* top) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 104 | StackFrame::State state; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 105 | StackFrame::Type type = ExitFrame::GetStateForFramePointer( |
| 106 | Isolate::c_entry_fp(top), &state); |
| 107 | handler_ = StackHandler::FromAddress(Isolate::handler(top)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 108 | frame_ = SingletonFor(type, &state); |
| 109 | } |
| 110 | |
| 111 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 112 | StackFrame* StackFrameIteratorBase::SingletonFor(StackFrame::Type type, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 113 | StackFrame::State* state) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 114 | StackFrame* result = SingletonFor(type); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 115 | DCHECK((!result) == (type == StackFrame::NONE)); |
| 116 | if (result) result->state_ = *state; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 117 | return result; |
| 118 | } |
| 119 | |
| 120 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 121 | StackFrame* StackFrameIteratorBase::SingletonFor(StackFrame::Type type) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 122 | #define FRAME_TYPE_CASE(type, field) \ |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 123 | case StackFrame::type: \ |
| 124 | return &field##_; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 125 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 126 | switch (type) { |
| 127 | case StackFrame::NONE: return NULL; |
| 128 | STACK_FRAME_TYPE_LIST(FRAME_TYPE_CASE) |
| 129 | default: break; |
| 130 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 131 | return NULL; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 132 | |
| 133 | #undef FRAME_TYPE_CASE |
| 134 | } |
| 135 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 136 | // ------------------------------------------------------------------------- |
| 137 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 138 | JavaScriptFrameIterator::JavaScriptFrameIterator(Isolate* isolate, |
| 139 | StackFrame::Id id) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 140 | : iterator_(isolate) { |
| 141 | while (!done()) { |
| 142 | Advance(); |
| 143 | if (frame()->id() == id) return; |
| 144 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 148 | void JavaScriptFrameIterator::Advance() { |
| 149 | do { |
| 150 | iterator_.Advance(); |
| 151 | } while (!iterator_.done() && !iterator_.frame()->is_java_script()); |
| 152 | } |
| 153 | |
| 154 | |
| 155 | void JavaScriptFrameIterator::AdvanceToArgumentsFrame() { |
| 156 | if (!frame()->has_adapted_arguments()) return; |
| 157 | iterator_.Advance(); |
| 158 | DCHECK(iterator_.frame()->is_arguments_adaptor()); |
| 159 | } |
| 160 | |
| 161 | |
| 162 | // ------------------------------------------------------------------------- |
| 163 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 164 | StackTraceFrameIterator::StackTraceFrameIterator(Isolate* isolate) |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 165 | : iterator_(isolate) { |
| 166 | if (!done() && !IsValidFrame(iterator_.frame())) Advance(); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 170 | void StackTraceFrameIterator::Advance() { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 171 | do { |
| 172 | iterator_.Advance(); |
| 173 | } while (!done() && !IsValidFrame(iterator_.frame())); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 174 | } |
| 175 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 176 | bool StackTraceFrameIterator::IsValidFrame(StackFrame* frame) const { |
| 177 | if (frame->is_java_script()) { |
| 178 | JavaScriptFrame* jsFrame = static_cast<JavaScriptFrame*>(frame); |
| 179 | if (!jsFrame->function()->IsJSFunction()) return false; |
| 180 | Object* script = jsFrame->function()->shared()->script(); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 181 | // Don't show functions from native scripts to user. |
| 182 | return (script->IsScript() && |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 183 | Script::TYPE_NATIVE != Script::cast(script)->type()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 184 | } |
| 185 | // apart from javascript, only wasm is valid |
| 186 | return frame->is_wasm(); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 187 | } |
| 188 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 189 | |
| 190 | // ------------------------------------------------------------------------- |
| 191 | |
| 192 | |
| 193 | SafeStackFrameIterator::SafeStackFrameIterator( |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 194 | Isolate* isolate, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 195 | Address fp, Address sp, Address js_entry_sp) |
| 196 | : StackFrameIteratorBase(isolate, false), |
| 197 | low_bound_(sp), |
| 198 | high_bound_(js_entry_sp), |
| 199 | top_frame_type_(StackFrame::NONE), |
| 200 | external_callback_scope_(isolate->external_callback_scope()) { |
| 201 | StackFrame::State state; |
| 202 | StackFrame::Type type; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 203 | ThreadLocalTop* top = isolate->thread_local_top(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 204 | if (IsValidTop(top)) { |
| 205 | type = ExitFrame::GetStateForFramePointer(Isolate::c_entry_fp(top), &state); |
| 206 | top_frame_type_ = type; |
| 207 | } else if (IsValidStackAddress(fp)) { |
| 208 | DCHECK(fp != NULL); |
| 209 | state.fp = fp; |
| 210 | state.sp = sp; |
| 211 | state.pc_address = StackFrame::ResolveReturnAddressLocation( |
| 212 | reinterpret_cast<Address*>(StandardFrame::ComputePCAddress(fp))); |
| 213 | // StackFrame::ComputeType will read both kContextOffset and kMarkerOffset, |
| 214 | // we check only that kMarkerOffset is within the stack bounds and do |
| 215 | // compile time check that kContextOffset slot is pushed on the stack before |
| 216 | // kMarkerOffset. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 217 | STATIC_ASSERT(StandardFrameConstants::kFunctionOffset < |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 218 | StandardFrameConstants::kContextOffset); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 219 | Address frame_marker = fp + StandardFrameConstants::kFunctionOffset; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 220 | if (IsValidStackAddress(frame_marker)) { |
| 221 | type = StackFrame::ComputeType(this, &state); |
| 222 | top_frame_type_ = type; |
| 223 | } else { |
| 224 | // Mark the frame as JAVA_SCRIPT if we cannot determine its type. |
| 225 | // The frame anyways will be skipped. |
| 226 | type = StackFrame::JAVA_SCRIPT; |
| 227 | // Top frame is incomplete so we cannot reliably determine its type. |
| 228 | top_frame_type_ = StackFrame::NONE; |
| 229 | } |
| 230 | } else { |
| 231 | return; |
| 232 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 233 | frame_ = SingletonFor(type, &state); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 234 | if (frame_) Advance(); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 238 | bool SafeStackFrameIterator::IsValidTop(ThreadLocalTop* top) const { |
| 239 | Address c_entry_fp = Isolate::c_entry_fp(top); |
| 240 | if (!IsValidExitFrame(c_entry_fp)) return false; |
| 241 | // There should be at least one JS_ENTRY stack handler. |
| 242 | Address handler = Isolate::handler(top); |
| 243 | if (handler == NULL) return false; |
| 244 | // Check that there are no js frames on top of the native frames. |
| 245 | return c_entry_fp < handler; |
| 246 | } |
| 247 | |
| 248 | |
| 249 | void SafeStackFrameIterator::AdvanceOneFrame() { |
| 250 | DCHECK(!done()); |
| 251 | StackFrame* last_frame = frame_; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 252 | Address last_sp = last_frame->sp(), last_fp = last_frame->fp(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 253 | // Before advancing to the next stack frame, perform pointer validity tests. |
| 254 | if (!IsValidFrame(last_frame) || !IsValidCaller(last_frame)) { |
| 255 | frame_ = NULL; |
| 256 | return; |
| 257 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 258 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 259 | // Advance to the previous frame. |
| 260 | StackFrame::State state; |
| 261 | StackFrame::Type type = frame_->GetCallerState(&state); |
| 262 | frame_ = SingletonFor(type, &state); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 263 | if (!frame_) return; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 264 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 265 | // Check that we have actually moved to the previous frame in the stack. |
| 266 | if (frame_->sp() < last_sp || frame_->fp() < last_fp) { |
| 267 | frame_ = NULL; |
| 268 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | |
| 272 | bool SafeStackFrameIterator::IsValidFrame(StackFrame* frame) const { |
| 273 | return IsValidStackAddress(frame->sp()) && IsValidStackAddress(frame->fp()); |
| 274 | } |
| 275 | |
| 276 | |
| 277 | bool SafeStackFrameIterator::IsValidCaller(StackFrame* frame) { |
| 278 | StackFrame::State state; |
| 279 | if (frame->is_entry() || frame->is_entry_construct()) { |
| 280 | // See EntryFrame::GetCallerState. It computes the caller FP address |
| 281 | // and calls ExitFrame::GetStateForFramePointer on it. We need to be |
| 282 | // sure that caller FP address is valid. |
| 283 | Address caller_fp = Memory::Address_at( |
| 284 | frame->fp() + EntryFrameConstants::kCallerFPOffset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 285 | if (!IsValidExitFrame(caller_fp)) return false; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 286 | } else if (frame->is_arguments_adaptor()) { |
| 287 | // See ArgumentsAdaptorFrame::GetCallerStackPointer. It assumes that |
| 288 | // the number of arguments is stored on stack as Smi. We need to check |
| 289 | // that it really an Smi. |
| 290 | Object* number_of_args = reinterpret_cast<ArgumentsAdaptorFrame*>(frame)-> |
| 291 | GetExpression(0); |
| 292 | if (!number_of_args->IsSmi()) { |
| 293 | return false; |
| 294 | } |
| 295 | } |
| 296 | frame->ComputeCallerState(&state); |
| 297 | return IsValidStackAddress(state.sp) && IsValidStackAddress(state.fp) && |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 298 | SingletonFor(frame->GetCallerState(&state)) != NULL; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 299 | } |
| 300 | |
| 301 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 302 | bool SafeStackFrameIterator::IsValidExitFrame(Address fp) const { |
| 303 | if (!IsValidStackAddress(fp)) return false; |
| 304 | Address sp = ExitFrame::ComputeStackPointer(fp); |
| 305 | if (!IsValidStackAddress(sp)) return false; |
| 306 | StackFrame::State state; |
| 307 | ExitFrame::FillState(fp, sp, &state); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 308 | return *state.pc_address != NULL; |
| 309 | } |
| 310 | |
| 311 | |
| 312 | void SafeStackFrameIterator::Advance() { |
| 313 | while (true) { |
| 314 | AdvanceOneFrame(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 315 | if (done()) break; |
| 316 | ExternalCallbackScope* last_callback_scope = NULL; |
| 317 | while (external_callback_scope_ != NULL && |
| 318 | external_callback_scope_->scope_address() < frame_->fp()) { |
| 319 | // As long as the setup of a frame is not atomic, we may happen to be |
| 320 | // in an interval where an ExternalCallbackScope is already created, |
| 321 | // but the frame is not yet entered. So we are actually observing |
| 322 | // the previous frame. |
| 323 | // Skip all the ExternalCallbackScope's that are below the current fp. |
| 324 | last_callback_scope = external_callback_scope_; |
| 325 | external_callback_scope_ = external_callback_scope_->previous(); |
| 326 | } |
| 327 | if (frame_->is_java_script()) break; |
| 328 | if (frame_->is_exit()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 329 | // Some of the EXIT frames may have ExternalCallbackScope allocated on |
| 330 | // top of them. In that case the scope corresponds to the first EXIT |
| 331 | // frame beneath it. There may be other EXIT frames on top of the |
| 332 | // ExternalCallbackScope, just skip them as we cannot collect any useful |
| 333 | // information about them. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 334 | if (last_callback_scope) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 335 | frame_->state_.pc_address = |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 336 | last_callback_scope->callback_entrypoint_address(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 337 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 338 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 339 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 340 | } |
| 341 | } |
| 342 | |
| 343 | |
| 344 | // ------------------------------------------------------------------------- |
| 345 | |
| 346 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 347 | Code* StackFrame::GetSafepointData(Isolate* isolate, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 348 | Address inner_pointer, |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 349 | SafepointEntry* safepoint_entry, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 350 | unsigned* stack_slots) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 351 | InnerPointerToCodeCache::InnerPointerToCodeCacheEntry* entry = |
| 352 | isolate->inner_pointer_to_code_cache()->GetCacheEntry(inner_pointer); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 353 | if (!entry->safepoint_entry.is_valid()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 354 | entry->safepoint_entry = entry->code->GetSafepointEntry(inner_pointer); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 355 | DCHECK(entry->safepoint_entry.is_valid()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 356 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 357 | DCHECK(entry->safepoint_entry.Equals( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 358 | entry->code->GetSafepointEntry(inner_pointer))); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | // Fill in the results and return the code. |
| 362 | Code* code = entry->code; |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 363 | *safepoint_entry = entry->safepoint_entry; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 364 | *stack_slots = code->stack_slots(); |
| 365 | return code; |
| 366 | } |
| 367 | |
| 368 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 369 | #ifdef DEBUG |
| 370 | static bool GcSafeCodeContains(HeapObject* object, Address addr); |
| 371 | #endif |
| 372 | |
| 373 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 374 | void StackFrame::IteratePc(ObjectVisitor* v, Address* pc_address, |
| 375 | Address* constant_pool_address, Code* holder) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 376 | Address pc = *pc_address; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 377 | DCHECK(GcSafeCodeContains(holder, pc)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 378 | unsigned pc_offset = static_cast<unsigned>(pc - holder->instruction_start()); |
| 379 | Object* code = holder; |
| 380 | v->VisitPointer(&code); |
| 381 | if (code != holder) { |
| 382 | holder = reinterpret_cast<Code*>(code); |
| 383 | pc = holder->instruction_start() + pc_offset; |
| 384 | *pc_address = pc; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 385 | if (FLAG_enable_embedded_constant_pool && constant_pool_address) { |
| 386 | *constant_pool_address = holder->constant_pool(); |
| 387 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 388 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 389 | } |
| 390 | |
| 391 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 392 | void StackFrame::SetReturnAddressLocationResolver( |
| 393 | ReturnAddressLocationResolver resolver) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 394 | DCHECK(return_address_location_resolver_ == NULL); |
| 395 | return_address_location_resolver_ = resolver; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 396 | } |
| 397 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 398 | static bool IsInterpreterFramePc(Isolate* isolate, Address pc) { |
| 399 | Code* interpreter_entry_trampoline = |
| 400 | isolate->builtins()->builtin(Builtins::kInterpreterEntryTrampoline); |
| 401 | Code* interpreter_bytecode_dispatch = |
| 402 | isolate->builtins()->builtin(Builtins::kInterpreterEnterBytecodeDispatch); |
| 403 | |
| 404 | return (pc >= interpreter_entry_trampoline->instruction_start() && |
| 405 | pc < interpreter_entry_trampoline->instruction_end()) || |
| 406 | (pc >= interpreter_bytecode_dispatch->instruction_start() && |
| 407 | pc < interpreter_bytecode_dispatch->instruction_end()); |
| 408 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 409 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 410 | StackFrame::Type StackFrame::ComputeType(const StackFrameIteratorBase* iterator, |
| 411 | State* state) { |
| 412 | DCHECK(state->fp != NULL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 413 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 414 | #if defined(USE_SIMULATOR) |
| 415 | MSAN_MEMORY_IS_INITIALIZED( |
| 416 | state->fp + CommonFrameConstants::kContextOrFrameTypeOffset, |
| 417 | kPointerSize); |
| 418 | #endif |
| 419 | Object* marker = Memory::Object_at( |
| 420 | state->fp + CommonFrameConstants::kContextOrFrameTypeOffset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 421 | if (!iterator->can_access_heap_objects_) { |
| 422 | // TODO(titzer): "can_access_heap_objects" is kind of bogus. It really |
| 423 | // means that we are being called from the profiler, which can interrupt |
| 424 | // the VM with a signal at any arbitrary instruction, with essentially |
| 425 | // anything on the stack. So basically none of these checks are 100% |
| 426 | // reliable. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 427 | #if defined(USE_SIMULATOR) |
| 428 | MSAN_MEMORY_IS_INITIALIZED( |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 429 | state->fp + StandardFrameConstants::kFunctionOffset, kPointerSize); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 430 | #endif |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 431 | Object* maybe_function = |
| 432 | Memory::Object_at(state->fp + StandardFrameConstants::kFunctionOffset); |
| 433 | if (!marker->IsSmi()) { |
| 434 | if (maybe_function->IsSmi()) { |
| 435 | return NONE; |
| 436 | } else if (FLAG_ignition && IsInterpreterFramePc(iterator->isolate(), |
| 437 | *(state->pc_address))) { |
| 438 | return INTERPRETED; |
| 439 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 440 | return JAVA_SCRIPT; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 441 | } |
| 442 | } |
| 443 | } else { |
| 444 | // Look up the code object to figure out the type of the stack frame. |
| 445 | Code* code_obj = |
| 446 | GetContainingCode(iterator->isolate(), *(state->pc_address)); |
| 447 | if (code_obj != nullptr) { |
| 448 | if (code_obj->is_interpreter_entry_trampoline() || |
| 449 | code_obj->is_interpreter_enter_bytecode_dispatch()) { |
| 450 | return INTERPRETED; |
| 451 | } |
| 452 | switch (code_obj->kind()) { |
| 453 | case Code::BUILTIN: |
| 454 | if (marker->IsSmi()) break; |
| 455 | // We treat frames for BUILTIN Code objects as OptimizedFrame for now |
| 456 | // (all the builtins with JavaScript linkage are actually generated |
| 457 | // with TurboFan currently, so this is sound). |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 458 | return OPTIMIZED; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 459 | case Code::FUNCTION: |
| 460 | return JAVA_SCRIPT; |
| 461 | case Code::OPTIMIZED_FUNCTION: |
| 462 | return OPTIMIZED; |
| 463 | case Code::WASM_FUNCTION: |
| 464 | return WASM; |
| 465 | case Code::WASM_TO_JS_FUNCTION: |
| 466 | return WASM_TO_JS; |
| 467 | case Code::JS_TO_WASM_FUNCTION: |
| 468 | return JS_TO_WASM; |
| 469 | default: |
| 470 | // All other types should have an explicit marker |
| 471 | break; |
| 472 | } |
| 473 | } else { |
| 474 | return NONE; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 475 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 476 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 477 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 478 | DCHECK(marker->IsSmi()); |
| 479 | StackFrame::Type candidate = |
| 480 | static_cast<StackFrame::Type>(Smi::cast(marker)->value()); |
| 481 | switch (candidate) { |
| 482 | case ENTRY: |
| 483 | case ENTRY_CONSTRUCT: |
| 484 | case EXIT: |
| 485 | case STUB: |
| 486 | case STUB_FAILURE_TRAMPOLINE: |
| 487 | case INTERNAL: |
| 488 | case CONSTRUCT: |
| 489 | case ARGUMENTS_ADAPTOR: |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 490 | case WASM_TO_JS: |
| 491 | case WASM: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 492 | return candidate; |
| 493 | case JS_TO_WASM: |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 494 | case JAVA_SCRIPT: |
| 495 | case OPTIMIZED: |
| 496 | case INTERPRETED: |
| 497 | default: |
| 498 | // Unoptimized and optimized JavaScript frames, including |
| 499 | // interpreted frames, should never have a StackFrame::Type |
| 500 | // marker. If we find one, we're likely being called from the |
| 501 | // profiler in a bogus stack frame. |
| 502 | return NONE; |
| 503 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 507 | #ifdef DEBUG |
| 508 | bool StackFrame::can_access_heap_objects() const { |
| 509 | return iterator_->can_access_heap_objects_; |
| 510 | } |
| 511 | #endif |
| 512 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 513 | |
| 514 | StackFrame::Type StackFrame::GetCallerState(State* state) const { |
| 515 | ComputeCallerState(state); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 516 | return ComputeType(iterator_, state); |
| 517 | } |
| 518 | |
| 519 | |
| 520 | Address StackFrame::UnpaddedFP() const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 521 | return fp(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 522 | } |
| 523 | |
| 524 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 525 | Code* EntryFrame::unchecked_code() const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 526 | return isolate()->heap()->js_entry_code(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | |
| 530 | void EntryFrame::ComputeCallerState(State* state) const { |
| 531 | GetCallerState(state); |
| 532 | } |
| 533 | |
| 534 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 535 | void EntryFrame::SetCallerFp(Address caller_fp) { |
| 536 | const int offset = EntryFrameConstants::kCallerFPOffset; |
| 537 | Memory::Address_at(this->fp() + offset) = caller_fp; |
| 538 | } |
| 539 | |
| 540 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 541 | StackFrame::Type EntryFrame::GetCallerState(State* state) const { |
| 542 | const int offset = EntryFrameConstants::kCallerFPOffset; |
| 543 | Address fp = Memory::Address_at(this->fp() + offset); |
| 544 | return ExitFrame::GetStateForFramePointer(fp, state); |
| 545 | } |
| 546 | |
| 547 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 548 | Code* EntryConstructFrame::unchecked_code() const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 549 | return isolate()->heap()->js_construct_entry_code(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 550 | } |
| 551 | |
| 552 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 553 | Object*& ExitFrame::code_slot() const { |
| 554 | const int offset = ExitFrameConstants::kCodeOffset; |
| 555 | return Memory::Object_at(fp() + offset); |
| 556 | } |
| 557 | |
| 558 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 559 | Code* ExitFrame::unchecked_code() const { |
| 560 | return reinterpret_cast<Code*>(code_slot()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | |
| 564 | void ExitFrame::ComputeCallerState(State* state) const { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 565 | // Set up the caller state. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 566 | state->sp = caller_sp(); |
| 567 | state->fp = Memory::Address_at(fp() + ExitFrameConstants::kCallerFPOffset); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 568 | state->pc_address = ResolveReturnAddressLocation( |
| 569 | reinterpret_cast<Address*>(fp() + ExitFrameConstants::kCallerPCOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 570 | if (FLAG_enable_embedded_constant_pool) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 571 | state->constant_pool_address = reinterpret_cast<Address*>( |
| 572 | fp() + ExitFrameConstants::kConstantPoolOffset); |
| 573 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 574 | } |
| 575 | |
| 576 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 577 | void ExitFrame::SetCallerFp(Address caller_fp) { |
| 578 | Memory::Address_at(fp() + ExitFrameConstants::kCallerFPOffset) = caller_fp; |
| 579 | } |
| 580 | |
| 581 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 582 | void ExitFrame::Iterate(ObjectVisitor* v) const { |
| 583 | // The arguments are traversed as part of the expression stack of |
| 584 | // the calling frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 585 | IteratePc(v, pc_address(), constant_pool_address(), LookupCode()); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 586 | v->VisitPointer(&code_slot()); |
| 587 | } |
| 588 | |
| 589 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 590 | Address ExitFrame::GetCallerStackPointer() const { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 591 | return fp() + ExitFrameConstants::kCallerSPOffset; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 592 | } |
| 593 | |
| 594 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 595 | StackFrame::Type ExitFrame::GetStateForFramePointer(Address fp, State* state) { |
| 596 | if (fp == 0) return NONE; |
| 597 | Address sp = ComputeStackPointer(fp); |
| 598 | FillState(fp, sp, state); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 599 | DCHECK(*state->pc_address != NULL); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 600 | return EXIT; |
| 601 | } |
| 602 | |
| 603 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 604 | Address ExitFrame::ComputeStackPointer(Address fp) { |
| 605 | return Memory::Address_at(fp + ExitFrameConstants::kSPOffset); |
| 606 | } |
| 607 | |
| 608 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 609 | void ExitFrame::FillState(Address fp, Address sp, State* state) { |
| 610 | state->sp = sp; |
| 611 | state->fp = fp; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 612 | state->pc_address = ResolveReturnAddressLocation( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 613 | reinterpret_cast<Address*>(sp - 1 * kPCOnStackSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 614 | // The constant pool recorded in the exit frame is not associated |
| 615 | // with the pc in this state (the return address into a C entry |
| 616 | // stub). ComputeCallerState will retrieve the constant pool |
| 617 | // together with the associated caller pc. |
| 618 | state->constant_pool_address = NULL; |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 619 | } |
| 620 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 621 | Address StandardFrame::GetExpressionAddress(int n) const { |
| 622 | const int offset = StandardFrameConstants::kExpressionsOffset; |
| 623 | return fp() + offset - n * kPointerSize; |
| 624 | } |
| 625 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 626 | Address InterpretedFrame::GetExpressionAddress(int n) const { |
| 627 | const int offset = InterpreterFrameConstants::kExpressionsOffset; |
| 628 | return fp() + offset - n * kPointerSize; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 629 | } |
| 630 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 631 | int StandardFrame::ComputeExpressionsCount() const { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 632 | Address base = GetExpressionAddress(0); |
| 633 | Address limit = sp() - kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 634 | DCHECK(base >= limit); // stack grows downwards |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 635 | // Include register-allocated locals in number of expressions. |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 636 | return static_cast<int>((base - limit) / kPointerSize); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 637 | } |
| 638 | |
| 639 | |
| 640 | void StandardFrame::ComputeCallerState(State* state) const { |
| 641 | state->sp = caller_sp(); |
| 642 | state->fp = caller_fp(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 643 | state->pc_address = ResolveReturnAddressLocation( |
| 644 | reinterpret_cast<Address*>(ComputePCAddress(fp()))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 645 | state->constant_pool_address = |
| 646 | reinterpret_cast<Address*>(ComputeConstantPoolAddress(fp())); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 647 | } |
| 648 | |
| 649 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 650 | void StandardFrame::SetCallerFp(Address caller_fp) { |
| 651 | Memory::Address_at(fp() + StandardFrameConstants::kCallerFPOffset) = |
| 652 | caller_fp; |
| 653 | } |
| 654 | |
| 655 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 656 | void StandardFrame::IterateCompiledFrame(ObjectVisitor* v) const { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 657 | // Make sure that we're not doing "safe" stack frame iteration. We cannot |
| 658 | // possibly find pointers in optimized frames in that state. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 659 | DCHECK(can_access_heap_objects()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 660 | |
| 661 | // Compute the safepoint information. |
| 662 | unsigned stack_slots = 0; |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 663 | SafepointEntry safepoint_entry; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 664 | Code* code = StackFrame::GetSafepointData( |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 665 | isolate(), pc(), &safepoint_entry, &stack_slots); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 666 | unsigned slot_space = stack_slots * kPointerSize; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 667 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 668 | // Determine the fixed header and spill slot area size. |
| 669 | int frame_header_size = StandardFrameConstants::kFixedFrameSizeFromFp; |
| 670 | Object* marker = |
| 671 | Memory::Object_at(fp() + CommonFrameConstants::kContextOrFrameTypeOffset); |
| 672 | if (marker->IsSmi()) { |
| 673 | StackFrame::Type candidate = |
| 674 | static_cast<StackFrame::Type>(Smi::cast(marker)->value()); |
| 675 | switch (candidate) { |
| 676 | case ENTRY: |
| 677 | case ENTRY_CONSTRUCT: |
| 678 | case EXIT: |
| 679 | case STUB_FAILURE_TRAMPOLINE: |
| 680 | case ARGUMENTS_ADAPTOR: |
| 681 | case STUB: |
| 682 | case INTERNAL: |
| 683 | case CONSTRUCT: |
| 684 | case JS_TO_WASM: |
| 685 | case WASM_TO_JS: |
| 686 | case WASM: |
| 687 | frame_header_size = TypedFrameConstants::kFixedFrameSizeFromFp; |
| 688 | break; |
| 689 | case JAVA_SCRIPT: |
| 690 | case OPTIMIZED: |
| 691 | case INTERPRETED: |
| 692 | // These frame types have a context, but they are actually stored |
| 693 | // in the place on the stack that one finds the frame type. |
| 694 | UNREACHABLE(); |
| 695 | break; |
| 696 | case NONE: |
| 697 | case NUMBER_OF_TYPES: |
| 698 | case MANUAL: |
| 699 | UNREACHABLE(); |
| 700 | break; |
| 701 | } |
| 702 | } |
| 703 | slot_space -= |
| 704 | (frame_header_size + StandardFrameConstants::kFixedFrameSizeAboveFp); |
| 705 | |
| 706 | Object** frame_header_base = &Memory::Object_at(fp() - frame_header_size); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 707 | Object** frame_header_limit = |
| 708 | &Memory::Object_at(fp() - StandardFrameConstants::kCPSlotSize); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 709 | Object** parameters_base = &Memory::Object_at(sp()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 710 | Object** parameters_limit = frame_header_base - slot_space / kPointerSize; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 711 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 712 | // Visit the parameters that may be on top of the saved registers. |
| 713 | if (safepoint_entry.argument_count() > 0) { |
| 714 | v->VisitPointers(parameters_base, |
| 715 | parameters_base + safepoint_entry.argument_count()); |
| 716 | parameters_base += safepoint_entry.argument_count(); |
| 717 | } |
| 718 | |
| 719 | // Skip saved double registers. |
| 720 | if (safepoint_entry.has_doubles()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 721 | // Number of doubles not known at snapshot time. |
| 722 | DCHECK(!isolate()->serializer_enabled()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 723 | parameters_base += |
| 724 | RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT) |
| 725 | ->num_allocatable_double_registers() * |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 726 | kDoubleSize / kPointerSize; |
| 727 | } |
| 728 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 729 | // Visit the registers that contain pointers if any. |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 730 | if (safepoint_entry.HasRegisters()) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 731 | for (int i = kNumSafepointRegisters - 1; i >=0; i--) { |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 732 | if (safepoint_entry.HasRegisterAt(i)) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 733 | int reg_stack_index = MacroAssembler::SafepointRegisterStackIndex(i); |
| 734 | v->VisitPointer(parameters_base + reg_stack_index); |
| 735 | } |
| 736 | } |
| 737 | // Skip the words containing the register values. |
| 738 | parameters_base += kNumSafepointRegisters; |
| 739 | } |
| 740 | |
| 741 | // We're done dealing with the register bits. |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 742 | uint8_t* safepoint_bits = safepoint_entry.bits(); |
| 743 | safepoint_bits += kNumSafepointRegisters >> kBitsPerByteLog2; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 744 | |
| 745 | // Visit the rest of the parameters. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 746 | if (!is_js_to_wasm() && !is_wasm()) { |
| 747 | // Non-WASM frames have tagged values as parameters. |
| 748 | v->VisitPointers(parameters_base, parameters_limit); |
| 749 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 750 | |
| 751 | // Visit pointer spill slots and locals. |
| 752 | for (unsigned index = 0; index < stack_slots; index++) { |
| 753 | int byte_index = index >> kBitsPerByteLog2; |
| 754 | int bit_index = index & (kBitsPerByte - 1); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 755 | if ((safepoint_bits[byte_index] & (1U << bit_index)) != 0) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 756 | v->VisitPointer(parameters_limit + index); |
| 757 | } |
| 758 | } |
| 759 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 760 | // Visit the return address in the callee and incoming arguments. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 761 | IteratePc(v, pc_address(), constant_pool_address(), code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 762 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 763 | if (!is_wasm() && !is_wasm_to_js()) { |
| 764 | // Visit the context in stub frame and JavaScript frame. |
| 765 | // Visit the function in JavaScript frame. |
| 766 | v->VisitPointers(frame_header_base, frame_header_limit); |
| 767 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 768 | } |
| 769 | |
| 770 | |
| 771 | void StubFrame::Iterate(ObjectVisitor* v) const { |
| 772 | IterateCompiledFrame(v); |
| 773 | } |
| 774 | |
| 775 | |
| 776 | Code* StubFrame::unchecked_code() const { |
| 777 | return static_cast<Code*>(isolate()->FindCodeObject(pc())); |
| 778 | } |
| 779 | |
| 780 | |
| 781 | Address StubFrame::GetCallerStackPointer() const { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 782 | return fp() + ExitFrameConstants::kCallerSPOffset; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | |
| 786 | int StubFrame::GetNumberOfIncomingArguments() const { |
| 787 | return 0; |
| 788 | } |
| 789 | |
| 790 | |
| 791 | void OptimizedFrame::Iterate(ObjectVisitor* v) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 792 | IterateCompiledFrame(v); |
| 793 | } |
| 794 | |
| 795 | |
| 796 | void JavaScriptFrame::SetParameterValue(int index, Object* value) const { |
| 797 | Memory::Object_at(GetParameterSlot(index)) = value; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | |
| 801 | bool JavaScriptFrame::IsConstructor() const { |
| 802 | Address fp = caller_fp(); |
| 803 | if (has_adapted_arguments()) { |
| 804 | // Skip the arguments adaptor frame and look at the real caller. |
| 805 | fp = Memory::Address_at(fp + StandardFrameConstants::kCallerFPOffset); |
| 806 | } |
| 807 | return IsConstructFrame(fp); |
| 808 | } |
| 809 | |
| 810 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 811 | bool JavaScriptFrame::HasInlinedFrames() const { |
| 812 | List<JSFunction*> functions(1); |
| 813 | GetFunctions(&functions); |
| 814 | return functions.length() > 1; |
| 815 | } |
| 816 | |
| 817 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 818 | int JavaScriptFrame::GetArgumentsLength() const { |
| 819 | // If there is an arguments adaptor frame get the arguments length from it. |
| 820 | if (has_adapted_arguments()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 821 | return ArgumentsAdaptorFrame::GetLength(caller_fp()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 822 | } else { |
| 823 | return GetNumberOfIncomingArguments(); |
| 824 | } |
| 825 | } |
| 826 | |
| 827 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 828 | Code* JavaScriptFrame::unchecked_code() const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 829 | return function()->code(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 833 | int JavaScriptFrame::GetNumberOfIncomingArguments() const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 834 | DCHECK(can_access_heap_objects() && |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 835 | isolate()->heap()->gc_state() == Heap::NOT_IN_GC); |
| 836 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 837 | return function()->shared()->internal_formal_parameter_count(); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 838 | } |
| 839 | |
| 840 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 841 | Address JavaScriptFrame::GetCallerStackPointer() const { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 842 | return fp() + StandardFrameConstants::kCallerSPOffset; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 843 | } |
| 844 | |
| 845 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 846 | void JavaScriptFrame::GetFunctions(List<JSFunction*>* functions) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 847 | DCHECK(functions->length() == 0); |
| 848 | functions->Add(function()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 849 | } |
| 850 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 851 | void JavaScriptFrame::Summarize(List<FrameSummary>* functions, |
| 852 | FrameSummary::Mode mode) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 853 | DCHECK(functions->length() == 0); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 854 | Code* code = LookupCode(); |
| 855 | int offset = static_cast<int>(pc() - code->instruction_start()); |
| 856 | AbstractCode* abstract_code = AbstractCode::cast(code); |
| 857 | FrameSummary summary(receiver(), function(), abstract_code, offset, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 858 | IsConstructor(), mode); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 859 | functions->Add(summary); |
| 860 | } |
| 861 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 862 | JSFunction* JavaScriptFrame::function() const { |
| 863 | return JSFunction::cast(function_slot_object()); |
| 864 | } |
| 865 | |
| 866 | Object* JavaScriptFrame::receiver() const { return GetParameter(-1); } |
| 867 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 868 | int JavaScriptFrame::LookupExceptionHandlerInTable( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 869 | int* stack_depth, HandlerTable::CatchPrediction* prediction) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 870 | Code* code = LookupCode(); |
| 871 | DCHECK(!code->is_optimized_code()); |
| 872 | HandlerTable* table = HandlerTable::cast(code->handler_table()); |
| 873 | int pc_offset = static_cast<int>(pc() - code->entry()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 874 | return table->LookupRange(pc_offset, stack_depth, prediction); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 875 | } |
| 876 | |
| 877 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 878 | void JavaScriptFrame::PrintFunctionAndOffset(JSFunction* function, Code* code, |
| 879 | Address pc, FILE* file, |
| 880 | bool print_line_number) { |
| 881 | PrintF(file, "%s", function->IsOptimized() ? "*" : "~"); |
| 882 | function->PrintName(file); |
| 883 | int code_offset = static_cast<int>(pc - code->instruction_start()); |
| 884 | PrintF(file, "+%d", code_offset); |
| 885 | if (print_line_number) { |
| 886 | SharedFunctionInfo* shared = function->shared(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 887 | int source_pos = code->SourcePosition(code_offset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 888 | Object* maybe_script = shared->script(); |
| 889 | if (maybe_script->IsScript()) { |
| 890 | Script* script = Script::cast(maybe_script); |
| 891 | int line = script->GetLineNumber(source_pos) + 1; |
| 892 | Object* script_name_raw = script->name(); |
| 893 | if (script_name_raw->IsString()) { |
| 894 | String* script_name = String::cast(script->name()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 895 | base::SmartArrayPointer<char> c_script_name = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 896 | script_name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 897 | PrintF(file, " at %s:%d", c_script_name.get(), line); |
| 898 | } else { |
| 899 | PrintF(file, " at <unknown>:%d", line); |
| 900 | } |
| 901 | } else { |
| 902 | PrintF(file, " at <unknown>:<unknown>"); |
| 903 | } |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | |
| 908 | void JavaScriptFrame::PrintTop(Isolate* isolate, FILE* file, bool print_args, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 909 | bool print_line_number) { |
| 910 | // constructor calls |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 911 | DisallowHeapAllocation no_allocation; |
| 912 | JavaScriptFrameIterator it(isolate); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 913 | while (!it.done()) { |
| 914 | if (it.frame()->is_java_script()) { |
| 915 | JavaScriptFrame* frame = it.frame(); |
| 916 | if (frame->IsConstructor()) PrintF(file, "new "); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 917 | PrintFunctionAndOffset(frame->function(), frame->unchecked_code(), |
| 918 | frame->pc(), file, print_line_number); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 919 | if (print_args) { |
| 920 | // function arguments |
| 921 | // (we are intentionally only printing the actually |
| 922 | // supplied parameters, not all parameters required) |
| 923 | PrintF(file, "(this="); |
| 924 | frame->receiver()->ShortPrint(file); |
| 925 | const int length = frame->ComputeParametersCount(); |
| 926 | for (int i = 0; i < length; i++) { |
| 927 | PrintF(file, ", "); |
| 928 | frame->GetParameter(i)->ShortPrint(file); |
| 929 | } |
| 930 | PrintF(file, ")"); |
| 931 | } |
| 932 | break; |
| 933 | } |
| 934 | it.Advance(); |
| 935 | } |
| 936 | } |
| 937 | |
| 938 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 939 | void JavaScriptFrame::SaveOperandStack(FixedArray* store) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 940 | int operands_count = store->length(); |
| 941 | DCHECK_LE(operands_count, ComputeOperandsCount()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 942 | for (int i = 0; i < operands_count; i++) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 943 | store->set(i, GetOperand(i)); |
| 944 | } |
| 945 | } |
| 946 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 947 | namespace { |
| 948 | |
| 949 | bool CannotDeoptFromAsmCode(Code* code, JSFunction* function) { |
| 950 | return code->is_turbofanned() && function->shared()->asm_function() && |
| 951 | !FLAG_turbo_asm_deoptimization; |
| 952 | } |
| 953 | |
| 954 | } // namespace |
| 955 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 956 | FrameSummary::FrameSummary(Object* receiver, JSFunction* function, |
| 957 | AbstractCode* abstract_code, int code_offset, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 958 | bool is_constructor, Mode mode) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 959 | : receiver_(receiver, function->GetIsolate()), |
| 960 | function_(function), |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 961 | abstract_code_(abstract_code), |
| 962 | code_offset_(code_offset), |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 963 | is_constructor_(is_constructor) { |
| 964 | DCHECK(abstract_code->IsBytecodeArray() || |
| 965 | Code::cast(abstract_code)->kind() != Code::OPTIMIZED_FUNCTION || |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 966 | CannotDeoptFromAsmCode(Code::cast(abstract_code), function) || |
| 967 | mode == kApproximateSummary); |
| 968 | } |
| 969 | |
| 970 | FrameSummary FrameSummary::GetFirst(JavaScriptFrame* frame) { |
| 971 | List<FrameSummary> frames(FLAG_max_inlining_levels + 1); |
| 972 | frame->Summarize(&frames); |
| 973 | return frames.first(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 974 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 975 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 976 | void FrameSummary::Print() { |
| 977 | PrintF("receiver: "); |
| 978 | receiver_->ShortPrint(); |
| 979 | PrintF("\nfunction: "); |
| 980 | function_->shared()->DebugName()->ShortPrint(); |
| 981 | PrintF("\ncode: "); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 982 | abstract_code_->ShortPrint(); |
| 983 | if (abstract_code_->IsCode()) { |
| 984 | Code* code = abstract_code_->GetCode(); |
| 985 | if (code->kind() == Code::FUNCTION) PrintF(" UNOPT "); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 986 | if (code->kind() == Code::OPTIMIZED_FUNCTION) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 987 | if (function()->shared()->asm_function()) { |
| 988 | DCHECK(CannotDeoptFromAsmCode(code, *function())); |
| 989 | PrintF(" ASM "); |
| 990 | } else { |
| 991 | PrintF(" OPT (approximate)"); |
| 992 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 993 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 994 | } else { |
| 995 | PrintF(" BYTECODE "); |
| 996 | } |
| 997 | PrintF("\npc: %d\n", code_offset_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 998 | } |
| 999 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1000 | void OptimizedFrame::Summarize(List<FrameSummary>* frames, |
| 1001 | FrameSummary::Mode mode) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1002 | DCHECK(frames->length() == 0); |
| 1003 | DCHECK(is_optimized()); |
| 1004 | |
| 1005 | // Delegate to JS frame in absence of turbofan deoptimization. |
| 1006 | // TODO(turbofan): Revisit once we support deoptimization across the board. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1007 | Code* code = LookupCode(); |
| 1008 | if (code->kind() == Code::BUILTIN || |
| 1009 | CannotDeoptFromAsmCode(code, function())) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1010 | return JavaScriptFrame::Summarize(frames); |
| 1011 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1012 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1013 | DisallowHeapAllocation no_gc; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1014 | int deopt_index = Safepoint::kNoDeoptimizationIndex; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1015 | DeoptimizationInputData* const data = GetDeoptimizationData(&deopt_index); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1016 | if (deopt_index == Safepoint::kNoDeoptimizationIndex) { |
| 1017 | DCHECK(data == nullptr); |
| 1018 | if (mode == FrameSummary::kApproximateSummary) { |
| 1019 | return JavaScriptFrame::Summarize(frames, mode); |
| 1020 | } |
| 1021 | FATAL("Missing deoptimization information for OptimizedFrame::Summarize."); |
| 1022 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1023 | FixedArray* const literal_array = data->LiteralArray(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1024 | |
| 1025 | TranslationIterator it(data->TranslationByteArray(), |
| 1026 | data->TranslationIndex(deopt_index)->value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1027 | Translation::Opcode frame_opcode = |
| 1028 | static_cast<Translation::Opcode>(it.Next()); |
| 1029 | DCHECK_EQ(Translation::BEGIN, frame_opcode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1030 | it.Next(); // Drop frame count. |
| 1031 | int jsframe_count = it.Next(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1032 | |
| 1033 | // We create the summary in reverse order because the frames |
| 1034 | // in the deoptimization translation are ordered bottom-to-top. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1035 | bool is_constructor = IsConstructor(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1036 | while (jsframe_count != 0) { |
| 1037 | frame_opcode = static_cast<Translation::Opcode>(it.Next()); |
| 1038 | if (frame_opcode == Translation::JS_FRAME || |
| 1039 | frame_opcode == Translation::INTERPRETED_FRAME) { |
| 1040 | jsframe_count--; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1041 | BailoutId const bailout_id = BailoutId(it.Next()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1042 | SharedFunctionInfo* const shared_info = |
| 1043 | SharedFunctionInfo::cast(literal_array->get(it.Next())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1044 | it.Next(); // Skip height. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1045 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1046 | // The translation commands are ordered and the function is always |
| 1047 | // at the first position, and the receiver is next. |
| 1048 | Translation::Opcode opcode = static_cast<Translation::Opcode>(it.Next()); |
| 1049 | |
| 1050 | // Get the correct function in the optimized frame. |
| 1051 | JSFunction* function; |
| 1052 | if (opcode == Translation::LITERAL) { |
| 1053 | function = JSFunction::cast(literal_array->get(it.Next())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1054 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1055 | CHECK_EQ(opcode, Translation::STACK_SLOT); |
| 1056 | function = JSFunction::cast(StackSlotAt(it.Next())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1057 | } |
| 1058 | DCHECK_EQ(shared_info, function->shared()); |
| 1059 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1060 | // If we are at a call, the receiver is always in a stack slot. |
| 1061 | // Otherwise we are not guaranteed to get the receiver value. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1062 | opcode = static_cast<Translation::Opcode>(it.Next()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1063 | |
| 1064 | // Get the correct receiver in the optimized frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1065 | Object* receiver; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1066 | if (opcode == Translation::LITERAL) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1067 | receiver = literal_array->get(it.Next()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1068 | } else if (opcode == Translation::STACK_SLOT) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1069 | receiver = StackSlotAt(it.Next()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1070 | } else { |
| 1071 | // The receiver is not in a stack slot nor in a literal. We give up. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1072 | it.Skip(Translation::NumberOfOperandsFor(opcode)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1073 | // TODO(3029): Materializing a captured object (or duplicated |
| 1074 | // object) is hard, we return undefined for now. This breaks the |
| 1075 | // produced stack trace, as constructor frames aren't marked as |
| 1076 | // such anymore. |
| 1077 | receiver = isolate()->heap()->undefined_value(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1078 | } |
| 1079 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1080 | AbstractCode* abstract_code; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1081 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1082 | unsigned code_offset; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1083 | if (frame_opcode == Translation::JS_FRAME) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1084 | Code* code = shared_info->code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1085 | DeoptimizationOutputData* const output_data = |
| 1086 | DeoptimizationOutputData::cast(code->deoptimization_data()); |
| 1087 | unsigned const entry = |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1088 | Deoptimizer::GetOutputInfo(output_data, bailout_id, shared_info); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1089 | code_offset = FullCodeGenerator::PcField::decode(entry); |
| 1090 | abstract_code = AbstractCode::cast(code); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1091 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1092 | DCHECK_EQ(frame_opcode, Translation::INTERPRETED_FRAME); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1093 | // BailoutId points to the next bytecode in the bytecode aray. Subtract |
| 1094 | // 1 to get the end of current bytecode. |
| 1095 | code_offset = bailout_id.ToInt() - 1; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1096 | abstract_code = AbstractCode::cast(shared_info->bytecode_array()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1097 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1098 | FrameSummary summary(receiver, function, abstract_code, code_offset, |
| 1099 | is_constructor); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1100 | frames->Add(summary); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1101 | is_constructor = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1102 | } else if (frame_opcode == Translation::CONSTRUCT_STUB_FRAME) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1103 | // The next encountered JS_FRAME will be marked as a constructor call. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1104 | it.Skip(Translation::NumberOfOperandsFor(frame_opcode)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1105 | DCHECK(!is_constructor); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1106 | is_constructor = true; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1107 | } else { |
| 1108 | // Skip over operands to advance to the next opcode. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1109 | it.Skip(Translation::NumberOfOperandsFor(frame_opcode)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1110 | } |
| 1111 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1112 | DCHECK(!is_constructor); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1113 | } |
| 1114 | |
| 1115 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1116 | int OptimizedFrame::LookupExceptionHandlerInTable( |
| 1117 | int* stack_slots, HandlerTable::CatchPrediction* prediction) { |
| 1118 | Code* code = LookupCode(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1119 | HandlerTable* table = HandlerTable::cast(code->handler_table()); |
| 1120 | int pc_offset = static_cast<int>(pc() - code->entry()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1121 | if (stack_slots) *stack_slots = code->stack_slots(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1122 | return table->LookupReturn(pc_offset, prediction); |
| 1123 | } |
| 1124 | |
| 1125 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1126 | DeoptimizationInputData* OptimizedFrame::GetDeoptimizationData( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1127 | int* deopt_index) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1128 | DCHECK(is_optimized()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1129 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1130 | JSFunction* opt_function = function(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1131 | Code* code = opt_function->code(); |
| 1132 | |
| 1133 | // The code object may have been replaced by lazy deoptimization. Fall |
| 1134 | // back to a slow search in this case to find the original optimized |
| 1135 | // code object. |
| 1136 | if (!code->contains(pc())) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1137 | code = isolate()->inner_pointer_to_code_cache()-> |
| 1138 | GcSafeFindCodeForInnerPointer(pc()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1139 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1140 | DCHECK(code != NULL); |
| 1141 | DCHECK(code->kind() == Code::OPTIMIZED_FUNCTION); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1142 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1143 | SafepointEntry safepoint_entry = code->GetSafepointEntry(pc()); |
| 1144 | *deopt_index = safepoint_entry.deoptimization_index(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1145 | if (*deopt_index != Safepoint::kNoDeoptimizationIndex) { |
| 1146 | return DeoptimizationInputData::cast(code->deoptimization_data()); |
| 1147 | } |
| 1148 | return nullptr; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1149 | } |
| 1150 | |
| 1151 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1152 | void OptimizedFrame::GetFunctions(List<JSFunction*>* functions) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1153 | DCHECK(functions->length() == 0); |
| 1154 | DCHECK(is_optimized()); |
| 1155 | |
| 1156 | // Delegate to JS frame in absence of turbofan deoptimization. |
| 1157 | // TODO(turbofan): Revisit once we support deoptimization across the board. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1158 | Code* code = LookupCode(); |
| 1159 | if (code->kind() == Code::BUILTIN || |
| 1160 | CannotDeoptFromAsmCode(code, function())) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1161 | return JavaScriptFrame::GetFunctions(functions); |
| 1162 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1163 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1164 | DisallowHeapAllocation no_gc; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1165 | int deopt_index = Safepoint::kNoDeoptimizationIndex; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1166 | DeoptimizationInputData* const data = GetDeoptimizationData(&deopt_index); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1167 | DCHECK_NOT_NULL(data); |
| 1168 | DCHECK_NE(Safepoint::kNoDeoptimizationIndex, deopt_index); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1169 | FixedArray* const literal_array = data->LiteralArray(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1170 | |
| 1171 | TranslationIterator it(data->TranslationByteArray(), |
| 1172 | data->TranslationIndex(deopt_index)->value()); |
| 1173 | Translation::Opcode opcode = static_cast<Translation::Opcode>(it.Next()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1174 | DCHECK_EQ(Translation::BEGIN, opcode); |
| 1175 | it.Next(); // Skip frame count. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1176 | int jsframe_count = it.Next(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1177 | |
| 1178 | // We insert the frames in reverse order because the frames |
| 1179 | // in the deoptimization translation are ordered bottom-to-top. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1180 | while (jsframe_count != 0) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1181 | opcode = static_cast<Translation::Opcode>(it.Next()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1182 | // Skip over operands to advance to the next opcode. |
| 1183 | it.Skip(Translation::NumberOfOperandsFor(opcode)); |
| 1184 | if (opcode == Translation::JS_FRAME || |
| 1185 | opcode == Translation::INTERPRETED_FRAME) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1186 | jsframe_count--; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1187 | |
| 1188 | // The translation commands are ordered and the function is always at the |
| 1189 | // first position. |
| 1190 | opcode = static_cast<Translation::Opcode>(it.Next()); |
| 1191 | |
| 1192 | // Get the correct function in the optimized frame. |
| 1193 | Object* function; |
| 1194 | if (opcode == Translation::LITERAL) { |
| 1195 | function = literal_array->get(it.Next()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1196 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1197 | CHECK_EQ(Translation::STACK_SLOT, opcode); |
| 1198 | function = StackSlotAt(it.Next()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1199 | } |
| 1200 | functions->Add(JSFunction::cast(function)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1201 | } |
| 1202 | } |
| 1203 | } |
| 1204 | |
| 1205 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1206 | int OptimizedFrame::StackSlotOffsetRelativeToFp(int slot_index) { |
| 1207 | return StandardFrameConstants::kCallerSPOffset - |
| 1208 | ((slot_index + 1) * kPointerSize); |
| 1209 | } |
| 1210 | |
| 1211 | |
| 1212 | Object* OptimizedFrame::StackSlotAt(int index) const { |
| 1213 | return Memory::Object_at(fp() + StackSlotOffsetRelativeToFp(index)); |
| 1214 | } |
| 1215 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1216 | int InterpretedFrame::LookupExceptionHandlerInTable( |
| 1217 | int* context_register, HandlerTable::CatchPrediction* prediction) { |
| 1218 | BytecodeArray* bytecode = function()->shared()->bytecode_array(); |
| 1219 | HandlerTable* table = HandlerTable::cast(bytecode->handler_table()); |
| 1220 | int pc_offset = GetBytecodeOffset() + 1; // Point after current bytecode. |
| 1221 | return table->LookupRange(pc_offset, context_register, prediction); |
| 1222 | } |
| 1223 | |
| 1224 | int InterpretedFrame::GetBytecodeOffset() const { |
| 1225 | const int index = InterpreterFrameConstants::kBytecodeOffsetExpressionIndex; |
| 1226 | DCHECK_EQ( |
| 1227 | InterpreterFrameConstants::kBytecodeOffsetFromFp, |
| 1228 | InterpreterFrameConstants::kExpressionsOffset - index * kPointerSize); |
| 1229 | int raw_offset = Smi::cast(GetExpression(index))->value(); |
| 1230 | return raw_offset - BytecodeArray::kHeaderSize + kHeapObjectTag; |
| 1231 | } |
| 1232 | |
| 1233 | void InterpretedFrame::PatchBytecodeOffset(int new_offset) { |
| 1234 | const int index = InterpreterFrameConstants::kBytecodeOffsetExpressionIndex; |
| 1235 | DCHECK_EQ( |
| 1236 | InterpreterFrameConstants::kBytecodeOffsetFromFp, |
| 1237 | InterpreterFrameConstants::kExpressionsOffset - index * kPointerSize); |
| 1238 | int raw_offset = new_offset + BytecodeArray::kHeaderSize - kHeapObjectTag; |
| 1239 | SetExpression(index, Smi::FromInt(raw_offset)); |
| 1240 | } |
| 1241 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1242 | BytecodeArray* InterpretedFrame::GetBytecodeArray() const { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1243 | const int index = InterpreterFrameConstants::kBytecodeArrayExpressionIndex; |
| 1244 | DCHECK_EQ( |
| 1245 | InterpreterFrameConstants::kBytecodeArrayFromFp, |
| 1246 | InterpreterFrameConstants::kExpressionsOffset - index * kPointerSize); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1247 | return BytecodeArray::cast(GetExpression(index)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1248 | } |
| 1249 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1250 | void InterpretedFrame::PatchBytecodeArray(BytecodeArray* bytecode_array) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1251 | const int index = InterpreterFrameConstants::kBytecodeArrayExpressionIndex; |
| 1252 | DCHECK_EQ( |
| 1253 | InterpreterFrameConstants::kBytecodeArrayFromFp, |
| 1254 | InterpreterFrameConstants::kExpressionsOffset - index * kPointerSize); |
| 1255 | SetExpression(index, bytecode_array); |
| 1256 | } |
| 1257 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1258 | Object* InterpretedFrame::ReadInterpreterRegister(int register_index) const { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1259 | const int index = InterpreterFrameConstants::kRegisterFileExpressionIndex; |
| 1260 | DCHECK_EQ( |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1261 | InterpreterFrameConstants::kRegisterFileFromFp, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1262 | InterpreterFrameConstants::kExpressionsOffset - index * kPointerSize); |
| 1263 | return GetExpression(index + register_index); |
| 1264 | } |
| 1265 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1266 | void InterpretedFrame::WriteInterpreterRegister(int register_index, |
| 1267 | Object* value) { |
| 1268 | const int index = InterpreterFrameConstants::kRegisterFileExpressionIndex; |
| 1269 | DCHECK_EQ( |
| 1270 | InterpreterFrameConstants::kRegisterFileFromFp, |
| 1271 | InterpreterFrameConstants::kExpressionsOffset - index * kPointerSize); |
| 1272 | return SetExpression(index + register_index, value); |
| 1273 | } |
| 1274 | |
| 1275 | void InterpretedFrame::Summarize(List<FrameSummary>* functions, |
| 1276 | FrameSummary::Mode mode) const { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1277 | DCHECK(functions->length() == 0); |
| 1278 | AbstractCode* abstract_code = |
| 1279 | AbstractCode::cast(function()->shared()->bytecode_array()); |
| 1280 | FrameSummary summary(receiver(), function(), abstract_code, |
| 1281 | GetBytecodeOffset(), IsConstructor()); |
| 1282 | functions->Add(summary); |
| 1283 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1284 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1285 | int ArgumentsAdaptorFrame::GetNumberOfIncomingArguments() const { |
| 1286 | return Smi::cast(GetExpression(0))->value(); |
| 1287 | } |
| 1288 | |
| 1289 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1290 | Address ArgumentsAdaptorFrame::GetCallerStackPointer() const { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1291 | return fp() + StandardFrameConstants::kCallerSPOffset; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1292 | } |
| 1293 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1294 | int ArgumentsAdaptorFrame::GetLength(Address fp) { |
| 1295 | const int offset = ArgumentsAdaptorFrameConstants::kLengthOffset; |
| 1296 | return Smi::cast(Memory::Object_at(fp + offset))->value(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1297 | } |
| 1298 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 1299 | Code* ArgumentsAdaptorFrame::unchecked_code() const { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1300 | return isolate()->builtins()->builtin( |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1301 | Builtins::kArgumentsAdaptorTrampoline); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1302 | } |
| 1303 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1304 | Address InternalFrame::GetCallerStackPointer() const { |
| 1305 | // Internal frames have no arguments. The stack pointer of the |
| 1306 | // caller is at a fixed offset from the frame pointer. |
| 1307 | return fp() + StandardFrameConstants::kCallerSPOffset; |
| 1308 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1309 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 1310 | Code* InternalFrame::unchecked_code() const { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1311 | const int offset = InternalFrameConstants::kCodeOffset; |
| 1312 | Object* code = Memory::Object_at(fp() + offset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1313 | DCHECK(code != NULL); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 1314 | return reinterpret_cast<Code*>(code); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1315 | } |
| 1316 | |
| 1317 | |
| 1318 | void StackFrame::PrintIndex(StringStream* accumulator, |
| 1319 | PrintMode mode, |
| 1320 | int index) { |
| 1321 | accumulator->Add((mode == OVERVIEW) ? "%5d: " : "[%d]: ", index); |
| 1322 | } |
| 1323 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1324 | void WasmFrame::Print(StringStream* accumulator, PrintMode mode, |
| 1325 | int index) const { |
| 1326 | accumulator->Add("wasm frame"); |
| 1327 | } |
| 1328 | |
| 1329 | Code* WasmFrame::unchecked_code() const { |
| 1330 | return static_cast<Code*>(isolate()->FindCodeObject(pc())); |
| 1331 | } |
| 1332 | |
| 1333 | void WasmFrame::Iterate(ObjectVisitor* v) const { IterateCompiledFrame(v); } |
| 1334 | |
| 1335 | Address WasmFrame::GetCallerStackPointer() const { |
| 1336 | return fp() + ExitFrameConstants::kCallerSPOffset; |
| 1337 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1338 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1339 | Object* WasmFrame::wasm_obj() { |
| 1340 | FixedArray* deopt_data = LookupCode()->deoptimization_data(); |
| 1341 | DCHECK(deopt_data->length() == 2); |
| 1342 | return deopt_data->get(0); |
| 1343 | } |
| 1344 | |
| 1345 | uint32_t WasmFrame::function_index() { |
| 1346 | FixedArray* deopt_data = LookupCode()->deoptimization_data(); |
| 1347 | DCHECK(deopt_data->length() == 2); |
| 1348 | Object* func_index_obj = deopt_data->get(1); |
| 1349 | if (func_index_obj->IsUndefined()) return static_cast<uint32_t>(-1); |
| 1350 | if (func_index_obj->IsSmi()) return Smi::cast(func_index_obj)->value(); |
| 1351 | DCHECK(func_index_obj->IsHeapNumber()); |
| 1352 | uint32_t val = static_cast<uint32_t>(-1); |
| 1353 | func_index_obj->ToUint32(&val); |
| 1354 | DCHECK(val != static_cast<uint32_t>(-1)); |
| 1355 | return val; |
| 1356 | } |
| 1357 | |
| 1358 | Object* WasmFrame::function_name() { |
| 1359 | Object* wasm_object = wasm_obj(); |
| 1360 | if (wasm_object->IsUndefined()) return wasm_object; |
| 1361 | Handle<JSObject> wasm = handle(JSObject::cast(wasm_object)); |
| 1362 | return *wasm::GetWasmFunctionName(wasm, function_index()); |
| 1363 | } |
| 1364 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1365 | namespace { |
| 1366 | |
| 1367 | |
| 1368 | void PrintFunctionSource(StringStream* accumulator, SharedFunctionInfo* shared, |
| 1369 | Code* code) { |
| 1370 | if (FLAG_max_stack_trace_source_length != 0 && code != NULL) { |
| 1371 | std::ostringstream os; |
| 1372 | os << "--------- s o u r c e c o d e ---------\n" |
| 1373 | << SourceCodeOf(shared, FLAG_max_stack_trace_source_length) |
| 1374 | << "\n-----------------------------------------\n"; |
| 1375 | accumulator->Add(os.str().c_str()); |
| 1376 | } |
| 1377 | } |
| 1378 | |
| 1379 | |
| 1380 | } // namespace |
| 1381 | |
| 1382 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1383 | void JavaScriptFrame::Print(StringStream* accumulator, |
| 1384 | PrintMode mode, |
| 1385 | int index) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1386 | DisallowHeapAllocation no_gc; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1387 | Object* receiver = this->receiver(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1388 | JSFunction* function = this->function(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1389 | |
| 1390 | accumulator->PrintSecurityTokenIfChanged(function); |
| 1391 | PrintIndex(accumulator, mode, index); |
| 1392 | Code* code = NULL; |
| 1393 | if (IsConstructor()) accumulator->Add("new "); |
| 1394 | accumulator->PrintFunction(function, receiver, &code); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1395 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1396 | // Get scope information for nicer output, if possible. If code is NULL, or |
| 1397 | // doesn't contain scope info, scope_info will return 0 for the number of |
| 1398 | // parameters, stack local variables, context local variables, stack slots, |
| 1399 | // or context slots. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1400 | SharedFunctionInfo* shared = function->shared(); |
| 1401 | ScopeInfo* scope_info = shared->scope_info(); |
| 1402 | Object* script_obj = shared->script(); |
| 1403 | if (script_obj->IsScript()) { |
| 1404 | Script* script = Script::cast(script_obj); |
| 1405 | accumulator->Add(" ["); |
| 1406 | accumulator->PrintName(script->name()); |
Ben Murdoch | 3bec4d2 | 2010-07-22 14:51:16 +0100 | [diff] [blame] | 1407 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1408 | Address pc = this->pc(); |
| 1409 | if (code != NULL && code->kind() == Code::FUNCTION && |
| 1410 | pc >= code->instruction_start() && pc < code->instruction_end()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1411 | int offset = static_cast<int>(pc - code->instruction_start()); |
| 1412 | int source_pos = code->SourcePosition(offset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1413 | int line = script->GetLineNumber(source_pos) + 1; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1414 | accumulator->Add(":%d] [pc=%p]", line, pc); |
| 1415 | } else if (is_interpreted()) { |
| 1416 | const InterpretedFrame* iframe = |
| 1417 | reinterpret_cast<const InterpretedFrame*>(this); |
| 1418 | BytecodeArray* bytecodes = iframe->GetBytecodeArray(); |
| 1419 | int offset = iframe->GetBytecodeOffset(); |
| 1420 | int source_pos = bytecodes->SourcePosition(offset); |
| 1421 | int line = script->GetLineNumber(source_pos) + 1; |
| 1422 | accumulator->Add(":%d] [bytecode=%p offset=%d]", line, bytecodes, offset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1423 | } else { |
| 1424 | int function_start_pos = shared->start_position(); |
| 1425 | int line = script->GetLineNumber(function_start_pos) + 1; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1426 | accumulator->Add(":~%d] [pc=%p]", line, pc); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1427 | } |
| 1428 | } |
| 1429 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1430 | accumulator->Add("(this=%o", receiver); |
| 1431 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1432 | // Print the parameters. |
| 1433 | int parameters_count = ComputeParametersCount(); |
| 1434 | for (int i = 0; i < parameters_count; i++) { |
| 1435 | accumulator->Add(","); |
| 1436 | // If we have a name for the parameter we print it. Nameless |
| 1437 | // parameters are either because we have more actual parameters |
| 1438 | // than formal parameters or because we have no scope information. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1439 | if (i < scope_info->ParameterCount()) { |
| 1440 | accumulator->PrintName(scope_info->ParameterName(i)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1441 | accumulator->Add("="); |
| 1442 | } |
| 1443 | accumulator->Add("%o", GetParameter(i)); |
| 1444 | } |
| 1445 | |
| 1446 | accumulator->Add(")"); |
| 1447 | if (mode == OVERVIEW) { |
| 1448 | accumulator->Add("\n"); |
| 1449 | return; |
| 1450 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1451 | if (is_optimized()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1452 | accumulator->Add(" {\n// optimized frame\n"); |
| 1453 | PrintFunctionSource(accumulator, shared, code); |
| 1454 | accumulator->Add("}\n"); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1455 | return; |
| 1456 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1457 | accumulator->Add(" {\n"); |
| 1458 | |
| 1459 | // Compute the number of locals and expression stack elements. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1460 | int stack_locals_count = scope_info->StackLocalCount(); |
| 1461 | int heap_locals_count = scope_info->ContextLocalCount(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1462 | int expressions_count = ComputeExpressionsCount(); |
| 1463 | |
| 1464 | // Print stack-allocated local variables. |
| 1465 | if (stack_locals_count > 0) { |
| 1466 | accumulator->Add(" // stack-allocated locals\n"); |
| 1467 | } |
| 1468 | for (int i = 0; i < stack_locals_count; i++) { |
| 1469 | accumulator->Add(" var "); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1470 | accumulator->PrintName(scope_info->StackLocalName(i)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1471 | accumulator->Add(" = "); |
| 1472 | if (i < expressions_count) { |
| 1473 | accumulator->Add("%o", GetExpression(i)); |
| 1474 | } else { |
| 1475 | accumulator->Add("// no expression found - inconsistent frame?"); |
| 1476 | } |
| 1477 | accumulator->Add("\n"); |
| 1478 | } |
| 1479 | |
| 1480 | // Try to get hold of the context of this frame. |
| 1481 | Context* context = NULL; |
| 1482 | if (this->context() != NULL && this->context()->IsContext()) { |
| 1483 | context = Context::cast(this->context()); |
| 1484 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1485 | while (context->IsWithContext()) { |
| 1486 | context = context->previous(); |
| 1487 | DCHECK(context != NULL); |
| 1488 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1489 | |
| 1490 | // Print heap-allocated local variables. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1491 | if (heap_locals_count > 0) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1492 | accumulator->Add(" // heap-allocated locals\n"); |
| 1493 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1494 | for (int i = 0; i < heap_locals_count; i++) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1495 | accumulator->Add(" var "); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1496 | accumulator->PrintName(scope_info->ContextLocalName(i)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1497 | accumulator->Add(" = "); |
| 1498 | if (context != NULL) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1499 | int index = Context::MIN_CONTEXT_SLOTS + i; |
| 1500 | if (index < context->length()) { |
| 1501 | accumulator->Add("%o", context->get(index)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1502 | } else { |
| 1503 | accumulator->Add( |
| 1504 | "// warning: missing context slot - inconsistent frame?"); |
| 1505 | } |
| 1506 | } else { |
| 1507 | accumulator->Add("// warning: no context found - inconsistent frame?"); |
| 1508 | } |
| 1509 | accumulator->Add("\n"); |
| 1510 | } |
| 1511 | |
| 1512 | // Print the expression stack. |
| 1513 | int expressions_start = stack_locals_count; |
| 1514 | if (expressions_start < expressions_count) { |
| 1515 | accumulator->Add(" // expression stack (top to bottom)\n"); |
| 1516 | } |
| 1517 | for (int i = expressions_count - 1; i >= expressions_start; i--) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1518 | accumulator->Add(" [%02d] : %o\n", i, GetExpression(i)); |
| 1519 | } |
| 1520 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1521 | PrintFunctionSource(accumulator, shared, code); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1522 | |
| 1523 | accumulator->Add("}\n\n"); |
| 1524 | } |
| 1525 | |
| 1526 | |
| 1527 | void ArgumentsAdaptorFrame::Print(StringStream* accumulator, |
| 1528 | PrintMode mode, |
| 1529 | int index) const { |
| 1530 | int actual = ComputeParametersCount(); |
| 1531 | int expected = -1; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1532 | JSFunction* function = this->function(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1533 | expected = function->shared()->internal_formal_parameter_count(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1534 | |
| 1535 | PrintIndex(accumulator, mode, index); |
| 1536 | accumulator->Add("arguments adaptor frame: %d->%d", actual, expected); |
| 1537 | if (mode == OVERVIEW) { |
| 1538 | accumulator->Add("\n"); |
| 1539 | return; |
| 1540 | } |
| 1541 | accumulator->Add(" {\n"); |
| 1542 | |
| 1543 | // Print actual arguments. |
| 1544 | if (actual > 0) accumulator->Add(" // actual arguments\n"); |
| 1545 | for (int i = 0; i < actual; i++) { |
| 1546 | accumulator->Add(" [%02d] : %o", i, GetParameter(i)); |
| 1547 | if (expected != -1 && i >= expected) { |
| 1548 | accumulator->Add(" // not passed to callee"); |
| 1549 | } |
| 1550 | accumulator->Add("\n"); |
| 1551 | } |
| 1552 | |
| 1553 | accumulator->Add("}\n\n"); |
| 1554 | } |
| 1555 | |
| 1556 | |
| 1557 | void EntryFrame::Iterate(ObjectVisitor* v) const { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1558 | IteratePc(v, pc_address(), constant_pool_address(), LookupCode()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1559 | } |
| 1560 | |
| 1561 | |
| 1562 | void StandardFrame::IterateExpressions(ObjectVisitor* v) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1563 | const int offset = StandardFrameConstants::kLastObjectOffset; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1564 | Object** base = &Memory::Object_at(sp()); |
| 1565 | Object** limit = &Memory::Object_at(fp() + offset) + 1; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1566 | v->VisitPointers(base, limit); |
| 1567 | } |
| 1568 | |
| 1569 | |
| 1570 | void JavaScriptFrame::Iterate(ObjectVisitor* v) const { |
| 1571 | IterateExpressions(v); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1572 | IteratePc(v, pc_address(), constant_pool_address(), LookupCode()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1573 | } |
| 1574 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1575 | void InternalFrame::Iterate(ObjectVisitor* v) const { |
| 1576 | // Internal frames only have object pointers on the expression stack |
| 1577 | // as they never have any arguments. |
| 1578 | IterateExpressions(v); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1579 | IteratePc(v, pc_address(), constant_pool_address(), LookupCode()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1580 | } |
| 1581 | |
| 1582 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1583 | void StubFailureTrampolineFrame::Iterate(ObjectVisitor* v) const { |
| 1584 | Object** base = &Memory::Object_at(sp()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1585 | Object** limit = &Memory::Object_at( |
| 1586 | fp() + StubFailureTrampolineFrameConstants::kFixedHeaderBottomOffset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1587 | v->VisitPointers(base, limit); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1588 | base = &Memory::Object_at(fp() + StandardFrameConstants::kFunctionOffset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1589 | const int offset = StandardFrameConstants::kLastObjectOffset; |
| 1590 | limit = &Memory::Object_at(fp() + offset) + 1; |
| 1591 | v->VisitPointers(base, limit); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1592 | IteratePc(v, pc_address(), constant_pool_address(), LookupCode()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1593 | } |
| 1594 | |
| 1595 | |
| 1596 | Address StubFailureTrampolineFrame::GetCallerStackPointer() const { |
| 1597 | return fp() + StandardFrameConstants::kCallerSPOffset; |
| 1598 | } |
| 1599 | |
| 1600 | |
| 1601 | Code* StubFailureTrampolineFrame::unchecked_code() const { |
| 1602 | Code* trampoline; |
| 1603 | StubFailureTrampolineStub(isolate(), NOT_JS_FUNCTION_STUB_MODE). |
| 1604 | FindCodeInCache(&trampoline); |
| 1605 | if (trampoline->contains(pc())) { |
| 1606 | return trampoline; |
| 1607 | } |
| 1608 | |
| 1609 | StubFailureTrampolineStub(isolate(), JS_FUNCTION_STUB_MODE). |
| 1610 | FindCodeInCache(&trampoline); |
| 1611 | if (trampoline->contains(pc())) { |
| 1612 | return trampoline; |
| 1613 | } |
| 1614 | |
| 1615 | UNREACHABLE(); |
| 1616 | return NULL; |
| 1617 | } |
| 1618 | |
| 1619 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1620 | // ------------------------------------------------------------------------- |
| 1621 | |
| 1622 | |
| 1623 | JavaScriptFrame* StackFrameLocator::FindJavaScriptFrame(int n) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1624 | DCHECK(n >= 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1625 | for (int i = 0; i <= n; i++) { |
| 1626 | while (!iterator_.frame()->is_java_script()) iterator_.Advance(); |
| 1627 | if (i == n) return JavaScriptFrame::cast(iterator_.frame()); |
| 1628 | iterator_.Advance(); |
| 1629 | } |
| 1630 | UNREACHABLE(); |
| 1631 | return NULL; |
| 1632 | } |
| 1633 | |
| 1634 | |
| 1635 | // ------------------------------------------------------------------------- |
| 1636 | |
| 1637 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1638 | static Map* GcSafeMapOfCodeSpaceObject(HeapObject* object) { |
| 1639 | MapWord map_word = object->map_word(); |
| 1640 | return map_word.IsForwardingAddress() ? |
| 1641 | map_word.ToForwardingAddress()->map() : map_word.ToMap(); |
| 1642 | } |
| 1643 | |
| 1644 | |
| 1645 | static int GcSafeSizeOfCodeSpaceObject(HeapObject* object) { |
| 1646 | return object->SizeFromMap(GcSafeMapOfCodeSpaceObject(object)); |
| 1647 | } |
| 1648 | |
| 1649 | |
| 1650 | #ifdef DEBUG |
| 1651 | static bool GcSafeCodeContains(HeapObject* code, Address addr) { |
| 1652 | Map* map = GcSafeMapOfCodeSpaceObject(code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1653 | DCHECK(map == code->GetHeap()->code_map()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1654 | Address start = code->address(); |
| 1655 | Address end = code->address() + code->SizeFromMap(map); |
| 1656 | return start <= addr && addr < end; |
| 1657 | } |
| 1658 | #endif |
| 1659 | |
| 1660 | |
| 1661 | Code* InnerPointerToCodeCache::GcSafeCastToCode(HeapObject* object, |
| 1662 | Address inner_pointer) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1663 | Code* code = reinterpret_cast<Code*>(object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1664 | DCHECK(code != NULL && GcSafeCodeContains(code, inner_pointer)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1665 | return code; |
| 1666 | } |
| 1667 | |
| 1668 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1669 | Code* InnerPointerToCodeCache::GcSafeFindCodeForInnerPointer( |
| 1670 | Address inner_pointer) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1671 | Heap* heap = isolate_->heap(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1672 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1673 | // Check if the inner pointer points into a large object chunk. |
| 1674 | LargePage* large_page = heap->lo_space()->FindPage(inner_pointer); |
| 1675 | if (large_page != NULL) { |
| 1676 | return GcSafeCastToCode(large_page->GetObject(), inner_pointer); |
| 1677 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1678 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1679 | if (!heap->code_space()->Contains(inner_pointer)) { |
| 1680 | return nullptr; |
| 1681 | } |
| 1682 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1683 | // Iterate through the page until we reach the end or find an object starting |
| 1684 | // after the inner pointer. |
| 1685 | Page* page = Page::FromAddress(inner_pointer); |
| 1686 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1687 | DCHECK_EQ(page->owner(), heap->code_space()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1688 | heap->mark_compact_collector()->sweeper().SweepOrWaitUntilSweepingCompleted( |
| 1689 | page); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1690 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1691 | Address addr = page->skip_list()->StartFor(inner_pointer); |
| 1692 | |
| 1693 | Address top = heap->code_space()->top(); |
| 1694 | Address limit = heap->code_space()->limit(); |
| 1695 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1696 | while (true) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1697 | if (addr == top && addr != limit) { |
| 1698 | addr = limit; |
| 1699 | continue; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1700 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1701 | |
| 1702 | HeapObject* obj = HeapObject::FromAddress(addr); |
| 1703 | int obj_size = GcSafeSizeOfCodeSpaceObject(obj); |
| 1704 | Address next_addr = addr + obj_size; |
| 1705 | if (next_addr > inner_pointer) return GcSafeCastToCode(obj, inner_pointer); |
| 1706 | addr = next_addr; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1707 | } |
| 1708 | } |
| 1709 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1710 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1711 | InnerPointerToCodeCache::InnerPointerToCodeCacheEntry* |
| 1712 | InnerPointerToCodeCache::GetCacheEntry(Address inner_pointer) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1713 | isolate_->counters()->pc_to_code()->Increment(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1714 | DCHECK(base::bits::IsPowerOfTwo32(kInnerPointerToCodeCacheSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1715 | uint32_t hash = ComputeIntegerHash(ObjectAddressForHashing(inner_pointer), |
| 1716 | v8::internal::kZeroHashSeed); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1717 | uint32_t index = hash & (kInnerPointerToCodeCacheSize - 1); |
| 1718 | InnerPointerToCodeCacheEntry* entry = cache(index); |
| 1719 | if (entry->inner_pointer == inner_pointer) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1720 | isolate_->counters()->pc_to_code_cached()->Increment(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1721 | DCHECK(entry->code == GcSafeFindCodeForInnerPointer(inner_pointer)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1722 | } else { |
| 1723 | // Because this code may be interrupted by a profiling signal that |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1724 | // also queries the cache, we cannot update inner_pointer before the code |
| 1725 | // has been set. Otherwise, we risk trying to use a cache entry before |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1726 | // the code has been computed. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1727 | entry->code = GcSafeFindCodeForInnerPointer(inner_pointer); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1728 | entry->safepoint_entry.Reset(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1729 | entry->inner_pointer = inner_pointer; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1730 | } |
| 1731 | return entry; |
| 1732 | } |
| 1733 | |
| 1734 | |
| 1735 | // ------------------------------------------------------------------------- |
| 1736 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1737 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1738 | int NumRegs(RegList reglist) { return base::bits::CountPopulation(reglist); } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1739 | |
| 1740 | |
| 1741 | struct JSCallerSavedCodeData { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1742 | int reg_code[kNumJSCallerSaved]; |
| 1743 | }; |
| 1744 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1745 | JSCallerSavedCodeData caller_saved_code_data; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1746 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1747 | void SetUpJSCallerSavedCodeData() { |
| 1748 | int i = 0; |
| 1749 | for (int r = 0; r < kNumRegs; r++) |
| 1750 | if ((kJSCallerSaved & (1 << r)) != 0) |
| 1751 | caller_saved_code_data.reg_code[i++] = r; |
| 1752 | |
| 1753 | DCHECK(i == kNumJSCallerSaved); |
| 1754 | } |
| 1755 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1756 | |
| 1757 | int JSCallerSavedCode(int n) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1758 | DCHECK(0 <= n && n < kNumJSCallerSaved); |
| 1759 | return caller_saved_code_data.reg_code[n]; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1760 | } |
| 1761 | |
| 1762 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1763 | #define DEFINE_WRAPPER(type, field) \ |
| 1764 | class field##_Wrapper : public ZoneObject { \ |
| 1765 | public: /* NOLINT */ \ |
| 1766 | field##_Wrapper(const field& original) : frame_(original) { \ |
| 1767 | } \ |
| 1768 | field frame_; \ |
| 1769 | }; |
| 1770 | STACK_FRAME_TYPE_LIST(DEFINE_WRAPPER) |
| 1771 | #undef DEFINE_WRAPPER |
| 1772 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1773 | static StackFrame* AllocateFrameCopy(StackFrame* frame, Zone* zone) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1774 | #define FRAME_TYPE_CASE(type, field) \ |
| 1775 | case StackFrame::type: { \ |
| 1776 | field##_Wrapper* wrapper = \ |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1777 | new(zone) field##_Wrapper(*(reinterpret_cast<field*>(frame))); \ |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1778 | return &wrapper->frame_; \ |
| 1779 | } |
| 1780 | |
| 1781 | switch (frame->type()) { |
| 1782 | STACK_FRAME_TYPE_LIST(FRAME_TYPE_CASE) |
| 1783 | default: UNREACHABLE(); |
| 1784 | } |
| 1785 | #undef FRAME_TYPE_CASE |
| 1786 | return NULL; |
| 1787 | } |
| 1788 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1789 | |
| 1790 | Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone) { |
| 1791 | ZoneList<StackFrame*> list(10, zone); |
| 1792 | for (StackFrameIterator it(isolate); !it.done(); it.Advance()) { |
| 1793 | StackFrame* frame = AllocateFrameCopy(it.frame(), zone); |
| 1794 | list.Add(frame, zone); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1795 | } |
| 1796 | return list.ToVector(); |
| 1797 | } |
| 1798 | |
| 1799 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1800 | } // namespace internal |
| 1801 | } // namespace v8 |