contrib/llvm-project/lldb/source/DataFormatters/CXXFunctionPointer.cpp

   1 //===-- CXXFunctionPointer.cpp-----------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "lldb/DataFormatters/CXXFunctionPointer.h"
  10
  11 #include "lldb/Core/ValueObject.h"
  12 #include "lldb/Target/SectionLoadList.h"
  13 #include "lldb/Target/Target.h"
  14 #include "lldb/Utility/Stream.h"
  15
  16 #include <string>
  17
  18 using namespace lldb;
  19 using namespace lldb_private;
  20 using namespace lldb_private::formatters;
  21
  22 bool lldb_private::formatters::CXXFunctionPointerSummaryProvider(
  23     ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
  24   std::string destination;
  25   StreamString sstr;
  26   AddressType func_ptr_address_type = eAddressTypeInvalid;
  27   addr_t func_ptr_address = valobj.GetPointerValue(&func_ptr_address_type);
  28   if (func_ptr_address != 0 && func_ptr_address != LLDB_INVALID_ADDRESS) {
  29     switch (func_ptr_address_type) {
  30     case eAddressTypeInvalid:
  31     case eAddressTypeFile:
  32     case eAddressTypeHost:
  33       break;
  34
  35     case eAddressTypeLoad: {
  36       ExecutionContext exe_ctx(valobj.GetExecutionContextRef());
  37
  38       Address so_addr;
  39       Target *target = exe_ctx.GetTargetPtr();
  40       if (target && !target->GetSectionLoadList().IsEmpty()) {
  41         if (target->GetSectionLoadList().ResolveLoadAddress(func_ptr_address,
  42                                                             so_addr)) {
  43           so_addr.Dump(&sstr, exe_ctx.GetBestExecutionContextScope(),
  44                        Address::DumpStyleResolvedDescription,
  45                        Address::DumpStyleSectionNameOffset);
  46         }
  47       }
  48     } break;
  49     }
  50   }
  51   if (sstr.GetSize() > 0) {
  52     stream.Printf("(%s)", sstr.GetData());
  53     return true;
  54   } else
  55     return false;
  56 }