1//===-- ObjectFilePlaceholder.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 "ObjectFilePlaceholder.h"
10
11#include "lldb/Core/Module.h"
12#include "lldb/Core/ModuleSpec.h"
13#include "lldb/Core/PluginManager.h"
14#include "lldb/Core/Section.h"
15#include "lldb/Target/SectionLoadList.h"
16#include "lldb/Target/Target.h"
17
18#include <memory>
19
20using namespace lldb;
21using namespace lldb_private;
22
23LLDB_PLUGIN_DEFINE(ObjectFilePlaceholder)
24
25ObjectFilePlaceholder::ObjectFilePlaceholder(
26 const lldb::ModuleSP &module_sp,
27 const lldb_private::ModuleSpec &module_spec, lldb::addr_t base,
28 lldb::addr_t size)
29 : ObjectFile(module_sp, &module_spec.GetFileSpec(), /*file_offset*/ 0,
30 /*length*/ 0, /*data_sp*/ nullptr, /*data_offset*/ 0),
31 m_arch(module_spec.GetArchitecture()), m_uuid(module_spec.GetUUID()),
32 m_base(base), m_size(size) {
33 m_symtab_up = std::make_unique<lldb_private::Symtab>(args: this);
34}
35
36void ObjectFilePlaceholder::CreateSections(
37 lldb_private::SectionList &unified_section_list) {
38 m_sections_up = std::make_unique<lldb_private::SectionList>();
39 auto section_sp = std::make_shared<lldb_private::Section>(
40 args: GetModule(), args: this, /*sect_id*/ args: 0,
41 args: lldb_private::ConstString(".module_image"), args: eSectionTypeOther, args&: m_base,
42 args&: m_size, /*file_offset*/ args: 0, /*file_size*/ args: 0,
43 /*log2align*/ args: 0, /*flags*/ args: 0);
44 section_sp->SetPermissions(ePermissionsReadable | ePermissionsExecutable);
45 m_sections_up->AddSection(section_sp);
46 unified_section_list.AddSection(section_sp: std::move(section_sp));
47}
48
49lldb_private::Address ObjectFilePlaceholder::GetBaseAddress() {
50 return lldb_private::Address(m_sections_up->GetSectionAtIndex(idx: 0), 0);
51}
52
53bool ObjectFilePlaceholder::SetLoadAddress(Target &target, addr_t value,
54 bool value_is_offset) {
55 assert(!value_is_offset);
56 assert(value == m_base);
57
58 // Create sections if they haven't been created already.
59 GetModule()->GetSectionList();
60 assert(m_sections_up->GetNumSections(0) == 1);
61
62 target.SetSectionLoadAddress(section: m_sections_up->GetSectionAtIndex(idx: 0), load_addr: m_base);
63 return true;
64}
65
66void ObjectFilePlaceholder::Dump(lldb_private::Stream *s) {
67 s->Format(format: "Placeholder object file for {0} loaded at [{1:x}-{2:x})\n",
68 args&: GetFileSpec(), args&: m_base, args: m_base + m_size);
69}
70

source code of lldb/source/Plugins/ObjectFile/Placeholder/ObjectFilePlaceholder.cpp