This revision was automatically updated to reflect the committed changes.
Closed by commit rL305780: [linux] Change the way we load vdso pseudo-module
(authored by labath).
Changed prior to commit:
https://reviews.llvm.org/D34352?vs=103045&id=103170#toc
Repository:
rL LLVM
https://reviews.llvm.org/D34352
Files:
lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.h
lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
Index: lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.h
===================================================================
--- lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.h
+++ lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.h
@@ -17,11 +17,11 @@
// Other libraries and framework includes
// Project includes
+#include "DYLDRendezvous.h"
#include "lldb/Breakpoint/StoppointCallbackContext.h"
+#include "lldb/Core/ModuleList.h"
#include "lldb/Target/DynamicLoader.h"
-#include "DYLDRendezvous.h"
-
class AuxVector;
class DynamicLoaderPOSIXDYLD : public lldb_private::DynamicLoader {
@@ -138,6 +138,8 @@
/// of all dependent modules.
virtual void LoadAllCurrentModules();
+ void LoadVDSO(lldb_private::ModuleList &modules);
+
/// Computes a value for m_load_offset returning the computed address on
/// success and LLDB_INVALID_ADDRESS on failure.
lldb::addr_t ComputeLoadOffset();
Index: lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
===================================================================
--- lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
+++ lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
@@ -21,6 +21,7 @@
#include "lldb/Core/Section.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/ObjectFile.h"
+#include "lldb/Target/MemoryRegionInfo.h"
#include "lldb/Target/Platform.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
@@ -484,6 +485,27 @@
return thread_plan_sp;
}
+void DynamicLoaderPOSIXDYLD::LoadVDSO(ModuleList &modules) {
+ if (m_vdso_base == LLDB_INVALID_ADDRESS)
+ return;
+
+ FileSpec file("[vdso]", false);
+
+ MemoryRegionInfo info;
+ Status status = m_process->GetMemoryRegionInfo(m_vdso_base, info);
+ if (status.Fail()) {
+ Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
+ LLDB_LOG(log, "Failed to get vdso region info: {0}", status);
+ return;
+ }
+
+ if (ModuleSP module_sp = m_process->ReadModuleFromMemory(
+ file, m_vdso_base, info.GetRange().GetByteSize())) {
+ UpdateLoadedSections(module_sp, LLDB_INVALID_ADDRESS, m_vdso_base, false);
+ m_process->GetTarget().GetImages().AppendIfNeeded(module_sp);
+ }
+}
+
void DynamicLoaderPOSIXDYLD::LoadAllCurrentModules() {
DYLDRendezvous::iterator I;
DYLDRendezvous::iterator E;
@@ -502,14 +524,7 @@
// that ourselves here.
ModuleSP executable = GetTargetExecutable();
m_loaded_modules[executable] = m_rendezvous.GetLinkMapAddress();
- if (m_vdso_base != LLDB_INVALID_ADDRESS) {
- FileSpec file_spec("[vdso]", false);
- ModuleSP module_sp = LoadModuleAtAddress(file_spec, LLDB_INVALID_ADDRESS,
- m_vdso_base, false);
- if (module_sp.get()) {
- module_list.Append(module_sp);
- }
- }
+ LoadVDSO(module_list);
std::vector<FileSpec> module_names;
for (I = m_rendezvous.begin(), E = m_rendezvous.end(); I != E; ++I)
Index: lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
===================================================================
--- lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
+++ lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
@@ -14,7 +14,6 @@
#include <stdint.h>
// C++ Includes
-#include <functional>
#include <vector>
// Other libraries and framework includes
@@ -182,9 +181,6 @@
typedef std::map<lldb::addr_t, lldb::AddressClass>
FileAddressToAddressClassMap;
- typedef std::function<lldb::offset_t(lldb_private::DataExtractor &,
- lldb::offset_t, lldb::offset_t)>
- SetDataFunction;
/// Version of this reader common to all plugins based on this class.
static const uint32_t m_plugin_version = 1;
@@ -230,7 +226,7 @@
// Parses the ELF program headers.
static size_t GetProgramHeaderInfo(ProgramHeaderColl &program_headers,
- const SetDataFunction &set_data,
+ lldb_private::DataExtractor &object_data,
const elf::ELFHeader &header);
// Finds PT_NOTE segments and calculates their crc sum.
@@ -255,7 +251,7 @@
/// Parses the elf section headers and returns the uuid, debug link name, crc,
/// archspec.
static size_t GetSectionHeaderInfo(SectionHeaderColl §ion_headers,
- const SetDataFunction &set_data,
+ lldb_private::DataExtractor &object_data,
const elf::ELFHeader &header,
lldb_private::UUID &uuid,
std::string &gnu_debuglink_file,
@@ -379,14 +375,6 @@
RefineModuleDetailsFromNote(lldb_private::DataExtractor &data,
lldb_private::ArchSpec &arch_spec,
lldb_private::UUID &uuid);
-
- static lldb::offset_t SetData(const lldb_private::DataExtractor &src,
- lldb_private::DataExtractor &dst,
- lldb::offset_t offset, lldb::offset_t length);
-
- lldb::offset_t SetDataWithReadMemoryFallback(lldb_private::DataExtractor &dst,
- lldb::offset_t offset,
- lldb::offset_t length);
};
#endif // liblldb_ObjectFileELF_h_
Index: lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
===================================================================
--- lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -707,10 +707,7 @@
SectionHeaderColl section_headers;
lldb_private::UUID &uuid = spec.GetUUID();
- using namespace std::placeholders;
- const SetDataFunction set_data =
- std::bind(&ObjectFileELF::SetData, std::cref(data), _1, _2, _3);
- GetSectionHeaderInfo(section_headers, set_data, header, uuid,
+ GetSectionHeaderInfo(section_headers, data, header, uuid,
gnu_debuglink_file, gnu_debuglink_crc,
spec.GetArchitecture());
@@ -748,7 +745,7 @@
data.SetData(data_sp);
}
ProgramHeaderColl program_headers;
- GetProgramHeaderInfo(program_headers, set_data, header);
+ GetProgramHeaderInfo(program_headers, data, header);
size_t segment_data_end = 0;
for (ProgramHeaderCollConstIter I = program_headers.begin();
@@ -950,29 +947,7 @@
bool ObjectFileELF::ParseHeader() {
lldb::offset_t offset = 0;
- if (!m_header.Parse(m_data, &offset))
- return false;
-
- if (!IsInMemory())
- return true;
-
- // For in memory object files m_data might not contain the full object file.
- // Try to load it
- // until the end of the "Section header table" what is at the end of the ELF
- // file.
- addr_t file_size = m_header.e_shoff + m_header.e_shnum * m_header.e_shentsize;
- if (m_data.GetByteSize() < file_size) {
- ProcessSP process_sp(m_process_wp.lock());
- if (!process_sp)
- return false;
-
- DataBufferSP data_sp = ReadMemory(process_sp, m_memory_addr, file_size);
- if (!data_sp)
- return false;
- m_data.SetData(data_sp, 0, file_size);
- }
-
- return true;
+ return m_header.Parse(m_data, &offset);
}
bool ObjectFileELF::GetUUID(lldb_private::UUID *uuid) {
@@ -1188,7 +1163,7 @@
// GetProgramHeaderInfo
//----------------------------------------------------------------------
size_t ObjectFileELF::GetProgramHeaderInfo(ProgramHeaderColl &program_headers,
- const SetDataFunction &set_data,
+ DataExtractor &object_data,
const ELFHeader &header) {
// We have already parsed the program headers
if (!program_headers.empty())
@@ -1205,7 +1180,7 @@
const size_t ph_size = header.e_phnum * header.e_phentsize;
const elf_off ph_offset = header.e_phoff;
DataExtractor data;
- if (set_data(data, ph_offset, ph_size) != ph_size)
+ if (data.SetData(object_data, ph_offset, ph_size) != ph_size)
return 0;
uint32_t idx;
@@ -1225,12 +1200,7 @@
// ParseProgramHeaders
//----------------------------------------------------------------------
size_t ObjectFileELF::ParseProgramHeaders() {
- using namespace std::placeholders;
- return GetProgramHeaderInfo(
- m_program_headers,
- std::bind(&ObjectFileELF::SetDataWithReadMemoryFallback, this, _1, _2,
- _3),
- m_header);
+ return GetProgramHeaderInfo(m_program_headers, m_data, m_header);
}
lldb_private::Status
@@ -1562,7 +1532,7 @@
// GetSectionHeaderInfo
//----------------------------------------------------------------------
size_t ObjectFileELF::GetSectionHeaderInfo(SectionHeaderColl §ion_headers,
- const SetDataFunction &set_data,
+ DataExtractor &object_data,
const elf::ELFHeader &header,
lldb_private::UUID &uuid,
std::string &gnu_debuglink_file,
@@ -1634,7 +1604,7 @@
const size_t sh_size = header.e_shnum * header.e_shentsize;
const elf_off sh_offset = header.e_shoff;
DataExtractor sh_data;
- if (set_data(sh_data, sh_offset, sh_size) != sh_size)
+ if (sh_data.SetData(object_data, sh_offset, sh_size) != sh_size)
return 0;
uint32_t idx;
@@ -1653,7 +1623,7 @@
const Elf64_Off offset = sheader.sh_offset;
lldb_private::DataExtractor shstr_data;
- if (set_data(shstr_data, offset, byte_size) == byte_size) {
+ if (shstr_data.SetData(object_data, offset, byte_size) == byte_size) {
for (SectionHeaderCollIter I = section_headers.begin();
I != section_headers.end(); ++I) {
static ConstString g_sect_name_gnu_debuglink(".gnu_debuglink");
@@ -1669,8 +1639,8 @@
DataExtractor data;
if (sheader.sh_type == SHT_MIPS_ABIFLAGS) {
- if (section_size && (set_data(data, sheader.sh_offset,
- section_size) == section_size)) {
+ if (section_size && (data.SetData(object_data, sheader.sh_offset,
+ section_size) == section_size)) {
// MIPS ASE Mask is at offset 12 in MIPS.abiflags section
lldb::offset_t offset = 12; // MIPS ABI Flags Version: 0
arch_flags |= data.GetU32(&offset);
@@ -1735,14 +1705,14 @@
DataExtractor data;
if (sheader.sh_type == SHT_ARM_ATTRIBUTES && section_size != 0 &&
- set_data(data, sheader.sh_offset, section_size) == section_size)
+ data.SetData(object_data, sheader.sh_offset, section_size) == section_size)
ParseARMAttributes(data, section_size, arch_spec);
}
if (name == g_sect_name_gnu_debuglink) {
DataExtractor data;
- if (section_size && (set_data(data, sheader.sh_offset,
- section_size) == section_size)) {
+ if (section_size && (data.SetData(object_data, sheader.sh_offset,
+ section_size) == section_size)) {
lldb::offset_t gnu_debuglink_offset = 0;
gnu_debuglink_file = data.GetCStr(&gnu_debuglink_offset);
gnu_debuglink_offset = llvm::alignTo(gnu_debuglink_offset, 4);
@@ -1762,8 +1732,8 @@
if (is_note_header) {
// Allow notes to refine module info.
DataExtractor data;
- if (section_size && (set_data(data, sheader.sh_offset,
- section_size) == section_size)) {
+ if (section_size && (data.SetData(object_data, sheader.sh_offset,
+ section_size) == section_size)) {
Status error = RefineModuleDetailsFromNote(data, arch_spec, uuid);
if (error.Fail()) {
if (log)
@@ -1819,40 +1789,9 @@
// ParseSectionHeaders
//----------------------------------------------------------------------
size_t ObjectFileELF::ParseSectionHeaders() {
- using namespace std::placeholders;
-
- return GetSectionHeaderInfo(
- m_section_headers,
- std::bind(&ObjectFileELF::SetDataWithReadMemoryFallback, this, _1, _2,
- _3),
- m_header, m_uuid, m_gnu_debuglink_file, m_gnu_debuglink_crc, m_arch_spec);
-}
-
-lldb::offset_t ObjectFileELF::SetData(const lldb_private::DataExtractor &src,
- lldb_private::DataExtractor &dst,
- lldb::offset_t offset,
- lldb::offset_t length) {
- return dst.SetData(src, offset, length);
-}
-
-lldb::offset_t
-ObjectFileELF::SetDataWithReadMemoryFallback(lldb_private::DataExtractor &dst,
- lldb::offset_t offset,
- lldb::offset_t length) {
- if (offset + length <= m_data.GetByteSize())
- return dst.SetData(m_data, offset, length);
-
- const auto process_sp = m_process_wp.lock();
- if (process_sp != nullptr) {
- addr_t file_size = offset + length;
-
- DataBufferSP data_sp = ReadMemory(process_sp, m_memory_addr, file_size);
- if (!data_sp)
- return false;
- m_data.SetData(data_sp, 0, file_size);
- }
-
- return dst.SetData(m_data, offset, length);
+ return GetSectionHeaderInfo(m_section_headers, m_data, m_header, m_uuid,
+ m_gnu_debuglink_file, m_gnu_debuglink_crc,
+ m_arch_spec);
}
const ObjectFileELF::ELFSectionHeaderInfo *
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