Revert "DWARF and unwind support for AOT assembly output."

runtime/vm/dwarf.h

Index: runtime/vm/dwarf.h
diff --git a/runtime/vm/dwarf.h b/runtime/vm/dwarf.h
deleted file mode 100644
index d51dc40a5f1c57b873c6dcb085cbbc0cabcbe7f6..0000000000000000000000000000000000000000
--- a/runtime/vm/dwarf.h
+++ /dev/null
@@ -1,207 +0,0 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#ifndef RUNTIME_VM_DWARF_H_
-#define RUNTIME_VM_DWARF_H_
-
-#include "vm/allocation.h"
-#include "vm/hash_map.h"
-#include "vm/object.h"
-#include "vm/zone.h"
-
-namespace dart {
-
-#ifdef DART_PRECOMPILER
-
-class InliningNode;
-
-struct ScriptIndexPair {
-  // Typedefs needed for the DirectChainedHashMap template.
-  typedef const Script* Key;
-  typedef intptr_t Value;
-  typedef ScriptIndexPair Pair;
-
-  static Key KeyOf(Pair kv) { return kv.script_; }
-
-  static Value ValueOf(Pair kv) { return kv.index_; }
-
-  static inline intptr_t Hashcode(Key key) {
-    return String::Handle(key->url()).Hash();
-  }
-
-  static inline bool IsKeyEqual(Pair pair, Key key) {
-    return pair.script_->raw() == key->raw();
-  }
-
-  ScriptIndexPair(const Script* s, intptr_t index)
-      : script_(s), index_(index) {}
-
-  ScriptIndexPair() : script_(NULL), index_(-1) {}
-
-  void Print() const;
-
-  const Script* script_;
-  intptr_t index_;
-};
-
-typedef DirectChainedHashMap<ScriptIndexPair> ScriptIndexMap;
-
-struct FunctionIndexPair {
-  // Typedefs needed for the DirectChainedHashMap template.
-  typedef const Function* Key;
-  typedef intptr_t Value;
-  typedef FunctionIndexPair Pair;
-
-  static Key KeyOf(Pair kv) { return kv.function_; }
-
-  static Value ValueOf(Pair kv) { return kv.index_; }
-
-  static inline intptr_t Hashcode(Key key) { return key->token_pos().value(); }
-
-  static inline bool IsKeyEqual(Pair pair, Key key) {
-    return pair.function_->raw() == key->raw();
-  }
-
-  FunctionIndexPair(const Function* f, intptr_t index)
-      : function_(f), index_(index) {}
-
-  FunctionIndexPair() : function_(NULL), index_(-1) {}
-
-  void Print() const;
-
-  const Function* function_;
-  intptr_t index_;
-};
-
-typedef DirectChainedHashMap<FunctionIndexPair> FunctionIndexMap;
-
-struct CodeIndexPair {
-  // Typedefs needed for the DirectChainedHashMap template.
-  typedef const Code* Key;
-  typedef intptr_t Value;
-  typedef CodeIndexPair Pair;
-
-  static Key KeyOf(Pair kv) { return kv.code_; }
-
-  static Value ValueOf(Pair kv) { return kv.index_; }
-
-  static inline intptr_t Hashcode(Key key) {
-    // Code objects are always allocated in old space, so they don't move.
-    return key->PayloadStart();
-  }
-
-  static inline bool IsKeyEqual(Pair pair, Key key) {
-    return pair.code_->raw() == key->raw();
-  }
-
-  CodeIndexPair(const Code* c, intptr_t index) : code_(c), index_(index) {}
-
-  CodeIndexPair() : code_(NULL), index_(-1) {}
-
-  void Print() const;
-
-  const Code* code_;
-  intptr_t index_;
-};
-
-typedef DirectChainedHashMap<CodeIndexPair> CodeIndexMap;
-
-class Dwarf : public ZoneAllocated {
- public:
-  Dwarf(Zone* zone, WriteStream* stream);
-
-  intptr_t AddCode(const Code& code);
-  intptr_t AddFunction(const Function& function);
-  intptr_t AddScript(const Script& script);
-  intptr_t LookupFunction(const Function& function);
-  intptr_t LookupScript(const Script& script);
-
-  void Write() {
-    WriteAbbreviations();
-    WriteCompilationUnit();
-    WriteLines();
-  }
-
- private:
-  static const intptr_t DW_TAG_compile_unit = 0x11;
-  static const intptr_t DW_TAG_inlined_subroutine = 0x1d;
-  static const intptr_t DW_TAG_subprogram = 0x2e;
-
-  static const intptr_t DW_CHILDREN_no = 0x0;
-  static const intptr_t DW_CHILDREN_yes = 0x1;
-
-  static const intptr_t DW_AT_sibling = 0x1;
-  static const intptr_t DW_AT_name = 0x3;
-  static const intptr_t DW_AT_stmt_list = 0x10;
-  static const intptr_t DW_AT_low_pc = 0x11;
-  static const intptr_t DW_AT_high_pc = 0x12;
-  static const intptr_t DW_AT_comp_dir = 0x1b;
-  static const intptr_t DW_AT_inline = 0x20;
-  static const intptr_t DW_AT_producer = 0x25;
-  static const intptr_t DW_AT_abstract_origin = 0x31;
-  static const intptr_t DW_AT_decl_column = 0x39;
-  static const intptr_t DW_AT_decl_file = 0x3a;
-  static const intptr_t DW_AT_decl_line = 0x3b;
-  static const intptr_t DW_AT_call_column = 0x57;
-  static const intptr_t DW_AT_call_file = 0x58;
-  static const intptr_t DW_AT_call_line = 0x59;
-
-  static const intptr_t DW_FORM_addr = 0x01;
-  static const intptr_t DW_FORM_string = 0x08;
-  static const intptr_t DW_FORM_udata = 0x0f;
-  static const intptr_t DW_FORM_ref4 = 0x13;
-  static const intptr_t DW_FORM_ref_udata = 0x15;
-  static const intptr_t DW_FORM_sec_offset = 0x17;
-
-  static const intptr_t DW_INL_not_inlined = 0x0;
-  static const intptr_t DW_INL_inlined = 0x1;
-
-  static const intptr_t DW_LNS_copy = 0x1;
-  static const intptr_t DW_LNS_advance_pc = 0x2;
-  static const intptr_t DW_LNS_advance_line = 0x3;
-  static const intptr_t DW_LNS_set_file = 0x4;
-
-  static const intptr_t DW_LNE_end_sequence = 0x01;
-  static const intptr_t DW_LNE_set_address = 0x02;
-
-  enum {
-    kCompilationUnit = 1,
-    kAbstractFunction,
-    kConcreteFunction,
-    kInlinedFunction,
-  };
-
-  void Print(const char* format, ...);
-  void sleb128(intptr_t value) { Print(".sleb128 %" Pd "\n", value); }
-  void uleb128(uintptr_t value) { Print(".uleb128 %" Pd "\n", value); }
-  void u1(uint8_t value) { Print(".byte %" Pd "\n", value); }
-  void u2(uint16_t value) { Print(".2byte %" Pd "\n", value); }
-  void u4(uint32_t value) { Print(".4byte %" Pd "\n", value); }
-
-  void WriteAbbreviations();
-  void WriteCompilationUnit();
-  void WriteAbstractFunctions();
-  void WriteConcreteFunctions();
-  InliningNode* ExpandInliningTree(const Code& code);
-  void WriteInliningNode(InliningNode* node,
-                         intptr_t root_code_index,
-                         const Script& parent_script);
-  void WriteLines();
-
-  Zone* const zone_;
-  WriteStream* stream_;
-  ZoneGrowableArray<const Code*> codes_;
-  CodeIndexMap code_to_index_;
-  ZoneGrowableArray<const Function*> functions_;
-  FunctionIndexMap function_to_index_;
-  ZoneGrowableArray<const Script*> scripts_;
-  ScriptIndexMap script_to_index_;
-  intptr_t temp_;
-};
-
-#endif  // DART_PRECOMPILER
-
-}  // namespace dart
-
-#endif  // RUNTIME_VM_DWARF_H_