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