1 files changed, 0 insertions, 346 deletions
diff --git a/source/Target/CPPLanguageRuntime.cpp b/source/Target/CPPLanguageRuntime.cpp
deleted file mode 100644
index f0bd1758461cb..0000000000000
--- a/source/Target/CPPLanguageRuntime.cpp
+++ /dev/null
@@ -1,346 +0,0 @@
-//===-- CPPLanguageRuntime.cpp
-//-------------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "lldb/Target/CPPLanguageRuntime.h"
-
-#include <string.h>
-
-#include "llvm/ADT/StringRef.h"
-
-#include "lldb/Symbol/Block.h"
-#include "lldb/Symbol/VariableList.h"
-
-#include "lldb/Core/PluginManager.h"
-#include "lldb/Core/UniqueCStringMap.h"
-#include "lldb/Symbol/ClangASTContext.h"
-#include "lldb/Target/ABI.h"
-#include "lldb/Target/ExecutionContext.h"
-#include "lldb/Target/RegisterContext.h"
-#include "lldb/Target/SectionLoadList.h"
-#include "lldb/Target/StackFrame.h"
-#include "lldb/Target/ThreadPlanRunToAddress.h"
-#include "lldb/Target/ThreadPlanStepInRange.h"
-
-using namespace lldb;
-using namespace lldb_private;
-
-//----------------------------------------------------------------------
-// Destructor
-//----------------------------------------------------------------------
-CPPLanguageRuntime::~CPPLanguageRuntime() {}
-
-CPPLanguageRuntime::CPPLanguageRuntime(Process *process)
-    : LanguageRuntime(process) {}
-
-bool CPPLanguageRuntime::GetObjectDescription(Stream &str,
-                                              ValueObject &object) {
-  // C++ has no generic way to do this.
-  return false;
-}
-
-bool CPPLanguageRuntime::GetObjectDescription(
-    Stream &str, Value &value, ExecutionContextScope *exe_scope) {
-  // C++ has no generic way to do this.
-  return false;
-}
-
-CPPLanguageRuntime::LibCppStdFunctionCallableInfo
-CPPLanguageRuntime::FindLibCppStdFunctionCallableInfo(
-    lldb::ValueObjectSP &valobj_sp) {
-  LibCppStdFunctionCallableInfo optional_info;
-
-  if (!valobj_sp)
-    return optional_info;
-
-  // Member __f_ has type __base*, the contents of which will hold:
-  // 1) a vtable entry which may hold type information needed to discover the
-  //    lambda being called
-  // 2) possibly hold a pointer to the callable object
-  // e.g.
-  //
-  // (lldb) frame var -R  f_display
-  // (std::__1::function<void (int)>) f_display = {
-  //  __buf_ = {
-  //  …
-  // }
-  //  __f_ = 0x00007ffeefbffa00
-  // }
-  // (lldb) memory read -fA 0x00007ffeefbffa00
-  // 0x7ffeefbffa00: ... `vtable for std::__1::__function::__func<void (*) ...
-  // 0x7ffeefbffa08: ... `print_num(int) at std_function_cppreference_exam ...
-  //
-  // We will be handling five cases below, std::function is wrapping:
-  //
-  // 1) a lambda we know at compile time. We will obtain the name of the lambda
-  //    from the first template pameter from __func's vtable. We will look up
-  //    the lambda's operator()() and obtain the line table entry.
-  // 2) a lambda we know at runtime. A pointer to the lambdas __invoke method
-  //    will be stored after the vtable. We will obtain the lambdas name from
-  //    this entry and lookup operator()() and obtain the line table entry.
-  // 3) a callable object via operator()(). We will obtain the name of the
-  //    object from the first template parameter from __func's vtable. We will
-  //    look up the objectc operator()() and obtain the line table entry.
-  // 4) a member function. A pointer to the function will stored after the
-  //    we will obtain the name from this pointer.
-  // 5) a free function. A pointer to the function will stored after the vtable
-  //    we will obtain the name from this pointer.
-  ValueObjectSP member__f_(
-      valobj_sp->GetChildMemberWithName(ConstString("__f_"), true));
-
-  if (member__f_) {
-    ValueObjectSP sub_member__f_(
-       member__f_->GetChildMemberWithName(ConstString("__f_"), true));
-
-    if (sub_member__f_)
-        member__f_ = sub_member__f_;
-  }
-
-  lldb::addr_t member__f_pointer_value = member__f_->GetValueAsUnsigned(0);
-
-  optional_info.member__f_pointer_value = member__f_pointer_value;
-
-  ExecutionContext exe_ctx(valobj_sp->GetExecutionContextRef());
-  Process *process = exe_ctx.GetProcessPtr();
-
-  if (process == nullptr)
-    return optional_info;
-
-  uint32_t address_size = process->GetAddressByteSize();
-  Status status;
-
-  // First item pointed to by __f_ should be the pointer to the vtable for
-  // a __base object.
-  lldb::addr_t vtable_address =
-      process->ReadPointerFromMemory(member__f_pointer_value, status);
-
-  if (status.Fail())
-    return optional_info;
-
-  lldb::addr_t address_after_vtable = member__f_pointer_value + address_size;
-  // As commened above we may not have a function pointer but if we do we will
-  // need it.
-  lldb::addr_t possible_function_address =
-      process->ReadPointerFromMemory(address_after_vtable, status);
-
-  if (status.Fail())
-    return optional_info;
-
-  Target &target = process->GetTarget();
-
-  if (target.GetSectionLoadList().IsEmpty())
-    return optional_info;
-
-  Address vtable_addr_resolved;
-  SymbolContext sc;
-  Symbol *symbol;
-
-  if (!target.GetSectionLoadList().ResolveLoadAddress(vtable_address,
-                                                      vtable_addr_resolved))
-    return optional_info;
-
-  target.GetImages().ResolveSymbolContextForAddress(
-      vtable_addr_resolved, eSymbolContextEverything, sc);
-  symbol = sc.symbol;
-
-  if (symbol == nullptr)
-    return optional_info;
-
-  llvm::StringRef vtable_name(symbol->GetName().GetCString());
-  bool found_expected_start_string =
-      vtable_name.startswith("vtable for std::__1::__function::__func<");
-
-  if (!found_expected_start_string)
-    return optional_info;
-
-  // Given case 1 or 3 we have a vtable name, we are want to extract the first
-  // template parameter
-  //
-  //  ... __func<main::$_0, std::__1::allocator<main::$_0> ...
-  //             ^^^^^^^^^
-  //
-  // We do this by find the first < and , and extracting in between.
-  //
-  // This covers the case of the lambda known at compile time.
-  size_t first_open_angle_bracket = vtable_name.find('<') + 1;
-  size_t first_comma = vtable_name.find_first_of(',');
-
-  llvm::StringRef first_template_parameter =
-      vtable_name.slice(first_open_angle_bracket, first_comma);
-
-  Address function_address_resolved;
-
-  // Setup for cases 2, 4 and 5 we have a pointer to a function after the
-  // vtable. We will use a process of elimination to drop through each case
-  // and obtain the data we need.
-  if (target.GetSectionLoadList().ResolveLoadAddress(
-          possible_function_address, function_address_resolved)) {
-    target.GetImages().ResolveSymbolContextForAddress(
-        function_address_resolved, eSymbolContextEverything, sc);
-    symbol = sc.symbol;
-  }
-
-  auto get_name = [&first_template_parameter, &symbol]() {
-    // Given case 1:
-    //
-    //    main::$_0
-    //
-    // we want to append ::operator()()
-    if (first_template_parameter.contains("$_"))
-      return llvm::Regex::escape(first_template_parameter.str()) +
-             R"(::operator\(\)\(.*\))";
-
-    if (symbol != NULL &&
-        symbol->GetName().GetStringRef().contains("__invoke")) {
-
-      llvm::StringRef symbol_name = symbol->GetName().GetStringRef();
-      size_t pos2 = symbol_name.find_last_of(':');
-
-      // Given case 2:
-      //
-      //    main::$_1::__invoke(...)
-      //
-      // We want to slice off __invoke(...) and append operator()()
-      std::string lambda_operator =
-          llvm::Regex::escape(symbol_name.slice(0, pos2 + 1).str()) +
-          R"(operator\(\)\(.*\))";
-
-      return lambda_operator;
-    }
-
-    // Case 3
-    return first_template_parameter.str() + R"(::operator\(\)\(.*\))";
-    ;
-  };
-
-  std::string func_to_match = get_name();
-
-  SymbolContextList scl;
-
-  target.GetImages().FindFunctions(RegularExpression{func_to_match}, true, true,
-                                   true, scl);
-
-  // Case 1,2 or 3
-  if (scl.GetSize() >= 1) {
-    SymbolContext sc2 = scl[0];
-
-    AddressRange range;
-    sc2.GetAddressRange(eSymbolContextEverything, 0, false, range);
-
-    Address address = range.GetBaseAddress();
-
-    Address addr;
-    if (target.ResolveLoadAddress(address.GetCallableLoadAddress(&target),
-                                  addr)) {
-      LineEntry line_entry;
-      addr.CalculateSymbolContextLineEntry(line_entry);
-
-      if (first_template_parameter.contains("$_") ||
-          (symbol != nullptr &&
-           symbol->GetName().GetStringRef().contains("__invoke"))) {
-        // Case 1 and 2
-        optional_info.callable_case = LibCppStdFunctionCallableCase::Lambda;
-      } else {
-        // Case 3
-        optional_info.callable_case =
-            LibCppStdFunctionCallableCase::CallableObject;
-      }
-
-      optional_info.callable_symbol = *symbol;
-      optional_info.callable_line_entry = line_entry;
-      optional_info.callable_address = addr;
-      return optional_info;
-    }
-  }
-
-  // Case 4 or 5
-  if (!symbol->GetName().GetStringRef().startswith("vtable for")) {
-    optional_info.callable_case =
-        LibCppStdFunctionCallableCase::FreeOrMemberFunction;
-    optional_info.callable_address = function_address_resolved;
-    optional_info.callable_symbol = *symbol;
-
-    return optional_info;
-  }
-
-  return optional_info;
-}
-
-lldb::ThreadPlanSP
-CPPLanguageRuntime::GetStepThroughTrampolinePlan(Thread &thread,
-                                                 bool stop_others) {
-  ThreadPlanSP ret_plan_sp;
-
-  lldb::addr_t curr_pc = thread.GetRegisterContext()->GetPC();
-
-  TargetSP target_sp(thread.CalculateTarget());
-
-  if (target_sp->GetSectionLoadList().IsEmpty())
-    return ret_plan_sp;
-
-  Address pc_addr_resolved;
-  SymbolContext sc;
-  Symbol *symbol;
-
-  if (!target_sp->GetSectionLoadList().ResolveLoadAddress(curr_pc,
-                                                          pc_addr_resolved))
-    return ret_plan_sp;
-
-  target_sp->GetImages().ResolveSymbolContextForAddress(
-      pc_addr_resolved, eSymbolContextEverything, sc);
-  symbol = sc.symbol;
-
-  if (symbol == nullptr)
-    return ret_plan_sp;
-
-  llvm::StringRef function_name(symbol->GetName().GetCString());
-
-  // Handling the case where we are attempting to step into std::function.
-  // The behavior will be that we will attempt to obtain the wrapped
-  // callable via FindLibCppStdFunctionCallableInfo() and if we find it we
-  // will return a ThreadPlanRunToAddress to the callable. Therefore we will
-  // step into the wrapped callable.
-  //
-  bool found_expected_start_string =
-      function_name.startswith("std::__1::function<");
-
-  if (!found_expected_start_string)
-    return ret_plan_sp;
-
-  AddressRange range_of_curr_func;
-  sc.GetAddressRange(eSymbolContextEverything, 0, false, range_of_curr_func);
-
-  StackFrameSP frame = thread.GetStackFrameAtIndex(0);
-
-  if (frame) {
-    ValueObjectSP value_sp = frame->FindVariable(ConstString("this"));
-
-    CPPLanguageRuntime::LibCppStdFunctionCallableInfo callable_info =
-        FindLibCppStdFunctionCallableInfo(value_sp);
-
-    if (callable_info.callable_case != LibCppStdFunctionCallableCase::Invalid &&
-        value_sp->GetValueIsValid()) {
-      // We found the std::function wrapped callable and we have its address.
-      // We now create a ThreadPlan to run to the callable.
-      ret_plan_sp.reset(new ThreadPlanRunToAddress(
-          thread, callable_info.callable_address, stop_others));
-      return ret_plan_sp;
-    } else {
-      // We are in std::function but we could not obtain the callable.
-      // We create a ThreadPlan to keep stepping through using the address range
-      // of the current function.
-      ret_plan_sp.reset(new ThreadPlanStepInRange(thread, range_of_curr_func,
-                                                  sc, eOnlyThisThread,
-                                                  eLazyBoolYes, eLazyBoolYes));
-      return ret_plan_sp;
-    }
-  }
-
-  return ret_plan_sp;
-}