lldb/source/Core/AddressResolverFileLine.cpp

   1 //===-- AddressResolverFileLine.cpp ---------------------------------------===//
   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/Core/AddressResolverFileLine.h"
  10
  11 #include "lldb/Core/Address.h"
  12 #include "lldb/Core/AddressRange.h"
  13 #include "lldb/Symbol/CompileUnit.h"
  14 #include "lldb/Symbol/LineEntry.h"
  15 #include "lldb/Symbol/SymbolContext.h"
  16 #include "lldb/Utility/ConstString.h"
  17 #include "lldb/Utility/LLDBLog.h"
  18 #include "lldb/Utility/Log.h"
  19 #include "lldb/Utility/Stream.h"
  20 #include "lldb/Utility/StreamString.h"
  21 #include "lldb/lldb-enumerations.h"
  22 #include "lldb/lldb-types.h"
  23
  24 #include <cinttypes>
  25 #include <vector>
  26
  27 using namespace lldb;
  28 using namespace lldb_private;
  29
  30 // AddressResolverFileLine:
  31 AddressResolverFileLine::AddressResolverFileLine(
  32     SourceLocationSpec location_spec)
  33     : AddressResolver(), m_src_location_spec(location_spec) {}
  34
  35 AddressResolverFileLine::~AddressResolverFileLine() = default;
  36
  37 Searcher::CallbackReturn
  38 AddressResolverFileLine::SearchCallback(SearchFilter &filter,
  39                                         SymbolContext &context, Address *addr) {
  40   SymbolContextList sc_list;
  41   CompileUnit *cu = context.comp_unit;
  42
  43   Log *log = GetLog(LLDBLog::Breakpoints);
  44
  45   // TODO: Handle SourceLocationSpec column information
  46   cu->ResolveSymbolContext(m_src_location_spec, eSymbolContextEverything,
  47                            sc_list);
  48   for (const SymbolContext &sc : sc_list) {
  49     Address line_start = sc.line_entry.range.GetBaseAddress();
  50     addr_t byte_size = sc.line_entry.range.GetByteSize();
  51     if (line_start.IsValid()) {
  52       AddressRange new_range(line_start, byte_size);
  53       m_address_ranges.push_back(new_range);
  54     } else {
  55       LLDB_LOGF(log,
  56                 "error: Unable to resolve address at file address 0x%" PRIx64
  57                 " for %s:%d\n",
  58                 line_start.GetFileAddress(),
  59                 m_src_location_spec.GetFileSpec().GetFilename().AsCString(
  60                     "<Unknown>"),
  61                 m_src_location_spec.GetLine().value_or(0));
  62     }
  63   }
  64   return Searcher::eCallbackReturnContinue;
  65 }
  66
  67 lldb::SearchDepth AddressResolverFileLine::GetDepth() {
  68   return lldb::eSearchDepthCompUnit;
  69 }
  70
  71 void AddressResolverFileLine::GetDescription(Stream *s) {
  72   s->Printf(
  73       "File and line address - file: \"%s\" line: %u",
  74       m_src_location_spec.GetFileSpec().GetFilename().AsCString("<Unknown>"),
  75       m_src_location_spec.GetLine().value_or(0));
  76 }