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   uint32_t sc_list_size = sc_list.GetSize();
49   for (uint32_t i = 0; i < sc_list_size; i++) {
50     SymbolContext sc;
51     if (sc_list.GetContextAtIndex(i, sc)) {
52       Address line_start = sc.line_entry.range.GetBaseAddress();
53       addr_t byte_size = sc.line_entry.range.GetByteSize();
54       if (line_start.IsValid()) {
55         AddressRange new_range(line_start, byte_size);
56         m_address_ranges.push_back(new_range);
57       } else {
58         LLDB_LOGF(log,
59                   "error: Unable to resolve address at file address 0x%" PRIx64
60                   " for %s:%d\n",
61                   line_start.GetFileAddress(),
62                   m_src_location_spec.GetFileSpec().GetFilename().AsCString(
63                       "<Unknown>"),
64                   m_src_location_spec.GetLine().value_or(0));
65       }
66     }
67   }
68   return Searcher::eCallbackReturnContinue;
69 }
70 
71 lldb::SearchDepth AddressResolverFileLine::GetDepth() {
72   return lldb::eSearchDepthCompUnit;
73 }
74 
75 void AddressResolverFileLine::GetDescription(Stream *s) {
76   s->Printf(
77       "File and line address - file: \"%s\" line: %u",
78       m_src_location_spec.GetFileSpec().GetFilename().AsCString("<Unknown>"),
79       m_src_location_spec.GetLine().value_or(0));
80 }
81