Files
clang-p2996/lldb/source/API/SBMemoryRegionInfo.cpp
Jason Molenda 9ea6dd5cfa Add a corefile style option to process save-core; skinny corefiles
Add a new feature to process save-core on Darwin systems -- for
lldb to create a user process corefile with only the dirty (modified
memory) pages included.  All of the binaries that were used in the
corefile are assumed to still exist on the system for the duration
of the use of the corefile.  A new --style option to process save-core
is added, so a full corefile can be requested if portability across
systems, or across time, is needed for this corefile.

debugserver can now identify the dirty pages in a memory region
when queried with qMemoryRegionInfo, and the size of vm pages is
given in qHostInfo.

Create a new "all image infos" LC_NOTE for Mach-O which allows us
to describe all of the binaries that were loaded in the process --
load address, UUID, file path, segment load addresses, and optionally
whether code from the binary was executing on any thread.  The old
"read dyld_all_image_infos and then the in-memory Mach-O load
commands to get segment load addresses" no longer works when we
only have dirty memory.

rdar://69670807
Differential Revision: https://reviews.llvm.org/D88387
2021-06-20 12:26:54 -07:00

203 lines
6.6 KiB
C++

//===-- SBMemoryRegionInfo.cpp --------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/API/SBMemoryRegionInfo.h"
#include "SBReproducerPrivate.h"
#include "Utils.h"
#include "lldb/API/SBDefines.h"
#include "lldb/API/SBError.h"
#include "lldb/API/SBStream.h"
#include "lldb/Target/MemoryRegionInfo.h"
#include "lldb/Utility/StreamString.h"
using namespace lldb;
using namespace lldb_private;
SBMemoryRegionInfo::SBMemoryRegionInfo() : m_opaque_up(new MemoryRegionInfo()) {
LLDB_RECORD_CONSTRUCTOR_NO_ARGS(SBMemoryRegionInfo);
}
SBMemoryRegionInfo::SBMemoryRegionInfo(const MemoryRegionInfo *lldb_object_ptr)
: m_opaque_up(new MemoryRegionInfo()) {
if (lldb_object_ptr)
ref() = *lldb_object_ptr;
}
SBMemoryRegionInfo::SBMemoryRegionInfo(const SBMemoryRegionInfo &rhs)
: m_opaque_up() {
LLDB_RECORD_CONSTRUCTOR(SBMemoryRegionInfo,
(const lldb::SBMemoryRegionInfo &), rhs);
m_opaque_up = clone(rhs.m_opaque_up);
}
const SBMemoryRegionInfo &SBMemoryRegionInfo::
operator=(const SBMemoryRegionInfo &rhs) {
LLDB_RECORD_METHOD(
const lldb::SBMemoryRegionInfo &,
SBMemoryRegionInfo, operator=,(const lldb::SBMemoryRegionInfo &), rhs);
if (this != &rhs)
m_opaque_up = clone(rhs.m_opaque_up);
return LLDB_RECORD_RESULT(*this);
}
SBMemoryRegionInfo::~SBMemoryRegionInfo() = default;
void SBMemoryRegionInfo::Clear() {
LLDB_RECORD_METHOD_NO_ARGS(void, SBMemoryRegionInfo, Clear);
m_opaque_up->Clear();
}
bool SBMemoryRegionInfo::operator==(const SBMemoryRegionInfo &rhs) const {
LLDB_RECORD_METHOD_CONST(
bool, SBMemoryRegionInfo, operator==,(const lldb::SBMemoryRegionInfo &),
rhs);
return ref() == rhs.ref();
}
bool SBMemoryRegionInfo::operator!=(const SBMemoryRegionInfo &rhs) const {
LLDB_RECORD_METHOD_CONST(
bool, SBMemoryRegionInfo, operator!=,(const lldb::SBMemoryRegionInfo &),
rhs);
return ref() != rhs.ref();
}
MemoryRegionInfo &SBMemoryRegionInfo::ref() { return *m_opaque_up; }
const MemoryRegionInfo &SBMemoryRegionInfo::ref() const { return *m_opaque_up; }
lldb::addr_t SBMemoryRegionInfo::GetRegionBase() {
LLDB_RECORD_METHOD_NO_ARGS(lldb::addr_t, SBMemoryRegionInfo, GetRegionBase);
return m_opaque_up->GetRange().GetRangeBase();
}
lldb::addr_t SBMemoryRegionInfo::GetRegionEnd() {
LLDB_RECORD_METHOD_NO_ARGS(lldb::addr_t, SBMemoryRegionInfo, GetRegionEnd);
return m_opaque_up->GetRange().GetRangeEnd();
}
bool SBMemoryRegionInfo::IsReadable() {
LLDB_RECORD_METHOD_NO_ARGS(bool, SBMemoryRegionInfo, IsReadable);
return m_opaque_up->GetReadable() == MemoryRegionInfo::eYes;
}
bool SBMemoryRegionInfo::IsWritable() {
LLDB_RECORD_METHOD_NO_ARGS(bool, SBMemoryRegionInfo, IsWritable);
return m_opaque_up->GetWritable() == MemoryRegionInfo::eYes;
}
bool SBMemoryRegionInfo::IsExecutable() {
LLDB_RECORD_METHOD_NO_ARGS(bool, SBMemoryRegionInfo, IsExecutable);
return m_opaque_up->GetExecutable() == MemoryRegionInfo::eYes;
}
bool SBMemoryRegionInfo::IsMapped() {
LLDB_RECORD_METHOD_NO_ARGS(bool, SBMemoryRegionInfo, IsMapped);
return m_opaque_up->GetMapped() == MemoryRegionInfo::eYes;
}
const char *SBMemoryRegionInfo::GetName() {
LLDB_RECORD_METHOD_NO_ARGS(const char *, SBMemoryRegionInfo, GetName);
return m_opaque_up->GetName().AsCString();
}
bool SBMemoryRegionInfo::HasDirtyMemoryPageList() {
LLDB_RECORD_METHOD_NO_ARGS(bool, SBMemoryRegionInfo, HasDirtyMemoryPageList);
return m_opaque_up->GetDirtyPageList().hasValue();
}
uint32_t SBMemoryRegionInfo::GetNumDirtyPages() {
LLDB_RECORD_METHOD_NO_ARGS(uint32_t, SBMemoryRegionInfo, GetNumDirtyPages);
uint32_t num_dirty_pages = 0;
llvm::Optional<std::vector<addr_t>> dirty_page_list =
m_opaque_up->GetDirtyPageList();
if (dirty_page_list.hasValue())
num_dirty_pages = dirty_page_list.getValue().size();
return num_dirty_pages;
}
addr_t SBMemoryRegionInfo::GetDirtyPageAddressAtIndex(uint32_t idx) {
LLDB_RECORD_METHOD(addr_t, SBMemoryRegionInfo, GetDirtyPageAddressAtIndex,
(uint32_t), idx);
addr_t dirty_page_addr = LLDB_INVALID_ADDRESS;
const llvm::Optional<std::vector<addr_t>> &dirty_page_list =
m_opaque_up->GetDirtyPageList();
if (dirty_page_list.hasValue() && idx < dirty_page_list.getValue().size())
dirty_page_addr = dirty_page_list.getValue()[idx];
return dirty_page_addr;
}
int SBMemoryRegionInfo::GetPageSize() {
LLDB_RECORD_METHOD_NO_ARGS(int, SBMemoryRegionInfo, GetPageSize);
return m_opaque_up->GetPageSize();
}
bool SBMemoryRegionInfo::GetDescription(SBStream &description) {
LLDB_RECORD_METHOD(bool, SBMemoryRegionInfo, GetDescription,
(lldb::SBStream &), description);
Stream &strm = description.ref();
const addr_t load_addr = m_opaque_up->GetRange().base;
strm.Printf("[0x%16.16" PRIx64 "-0x%16.16" PRIx64 " ", load_addr,
load_addr + m_opaque_up->GetRange().size);
strm.Printf(m_opaque_up->GetReadable() ? "R" : "-");
strm.Printf(m_opaque_up->GetWritable() ? "W" : "-");
strm.Printf(m_opaque_up->GetExecutable() ? "X" : "-");
strm.Printf("]");
return true;
}
namespace lldb_private {
namespace repro {
template <>
void RegisterMethods<SBMemoryRegionInfo>(Registry &R) {
LLDB_REGISTER_CONSTRUCTOR(SBMemoryRegionInfo, ());
LLDB_REGISTER_CONSTRUCTOR(SBMemoryRegionInfo,
(const lldb::SBMemoryRegionInfo &));
LLDB_REGISTER_METHOD(
const lldb::SBMemoryRegionInfo &,
SBMemoryRegionInfo, operator=,(const lldb::SBMemoryRegionInfo &));
LLDB_REGISTER_METHOD(void, SBMemoryRegionInfo, Clear, ());
LLDB_REGISTER_METHOD_CONST(
bool,
SBMemoryRegionInfo, operator==,(const lldb::SBMemoryRegionInfo &));
LLDB_REGISTER_METHOD_CONST(
bool,
SBMemoryRegionInfo, operator!=,(const lldb::SBMemoryRegionInfo &));
LLDB_REGISTER_METHOD(lldb::addr_t, SBMemoryRegionInfo, GetRegionBase, ());
LLDB_REGISTER_METHOD(lldb::addr_t, SBMemoryRegionInfo, GetRegionEnd, ());
LLDB_REGISTER_METHOD(bool, SBMemoryRegionInfo, IsReadable, ());
LLDB_REGISTER_METHOD(bool, SBMemoryRegionInfo, IsWritable, ());
LLDB_REGISTER_METHOD(bool, SBMemoryRegionInfo, IsExecutable, ());
LLDB_REGISTER_METHOD(bool, SBMemoryRegionInfo, IsMapped, ());
LLDB_REGISTER_METHOD(const char *, SBMemoryRegionInfo, GetName, ());
LLDB_REGISTER_METHOD(bool, SBMemoryRegionInfo, GetDescription,
(lldb::SBStream &));
}
}
}