c4fb7180cb
Lots of code around LLDB was directly accessing the target's section load list. This NFC patch makes the section load list private so the Target class can access it, but everyone else now uses accessor functions. This allows us to control the resolving of addresses and will allow for functionality in LLDB which can lazily resolve addresses in JIT plug-ins with a future patch.
70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
//===-- ObjectFilePlaceholder.cpp----------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "ObjectFilePlaceholder.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/ModuleSpec.h"
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#include "lldb/Core/PluginManager.h"
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#include "lldb/Core/Section.h"
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#include "lldb/Target/SectionLoadList.h"
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#include "lldb/Target/Target.h"
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#include <memory>
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using namespace lldb;
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using namespace lldb_private;
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LLDB_PLUGIN_DEFINE(ObjectFilePlaceholder)
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ObjectFilePlaceholder::ObjectFilePlaceholder(
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const lldb::ModuleSP &module_sp,
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const lldb_private::ModuleSpec &module_spec, lldb::addr_t base,
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lldb::addr_t size)
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: ObjectFile(module_sp, &module_spec.GetFileSpec(), /*file_offset*/ 0,
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/*length*/ 0, /*data_sp*/ nullptr, /*data_offset*/ 0),
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m_arch(module_spec.GetArchitecture()), m_uuid(module_spec.GetUUID()),
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m_base(base), m_size(size) {
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m_symtab_up = std::make_unique<lldb_private::Symtab>(this);
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}
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void ObjectFilePlaceholder::CreateSections(
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lldb_private::SectionList &unified_section_list) {
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m_sections_up = std::make_unique<lldb_private::SectionList>();
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auto section_sp = std::make_shared<lldb_private::Section>(
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GetModule(), this, /*sect_id*/ 0,
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lldb_private::ConstString(".module_image"), eSectionTypeOther, m_base,
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m_size, /*file_offset*/ 0, /*file_size*/ 0,
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/*log2align*/ 0, /*flags*/ 0);
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section_sp->SetPermissions(ePermissionsReadable | ePermissionsExecutable);
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m_sections_up->AddSection(section_sp);
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unified_section_list.AddSection(std::move(section_sp));
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}
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lldb_private::Address ObjectFilePlaceholder::GetBaseAddress() {
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return lldb_private::Address(m_sections_up->GetSectionAtIndex(0), 0);
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}
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bool ObjectFilePlaceholder::SetLoadAddress(Target &target, addr_t value,
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bool value_is_offset) {
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assert(!value_is_offset);
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assert(value == m_base);
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// Create sections if they haven't been created already.
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GetModule()->GetSectionList();
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assert(m_sections_up->GetNumSections(0) == 1);
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target.SetSectionLoadAddress(m_sections_up->GetSectionAtIndex(0), m_base);
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return true;
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}
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void ObjectFilePlaceholder::Dump(lldb_private::Stream *s) {
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s->Format("Placeholder object file for {0} loaded at [{1:x}-{2:x})\n",
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GetFileSpec(), m_base, m_base + m_size);
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}
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