http://reviews.llvm.org/D4006
Files:
include/lldb/Core/Section.h
lib/Makefile
source/Core/Section.cpp
source/Expression/IRExecutionUnit.cpp
source/Plugins/JITLoader/GDB/JITLoaderGDB.cpp
source/Plugins/Makefile
source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
Index: include/lldb/Core/Section.h
===================================================================
--- include/lldb/Core/Section.h
+++ include/lldb/Core/Section.h
@@ -119,6 +119,7 @@
lldb::addr_t vm_size,
lldb::offset_t file_offset,
lldb::offset_t file_size,
+ uint32_t log2align,
uint32_t flags);
// Create a section that is a child of parent_section_sp
@@ -132,6 +133,7 @@
lldb::addr_t vm_size,
lldb::offset_t file_offset,
lldb::offset_t file_size,
+ uint32_t log2align,
uint32_t flags);
~Section ();
@@ -284,6 +286,17 @@
return m_obj_file;
}
+ uint32_t GetLog2Align()
+ {
+ return m_log2align;
+ }
+
+ void
+ SetLog2Align(uint32_t align)
+ {
+ m_log2align = align;
+ }
+
protected:
@@ -296,6 +309,7 @@
lldb::addr_t m_byte_size; // Size in bytes that this section will occupy in memory at runtime
lldb::offset_t m_file_offset; // Object file offset (if any)
lldb::offset_t m_file_size; // Object file size (can be smaller than m_byte_size for zero filled sections...)
+ uint32_t m_log2align; // log_2(align) of the section (i.e. section has to be aligned to 2^m_log2align)
SectionList m_children; // Child sections
bool m_fake:1, // If true, then this section only can contain the address if one of its
// children contains an address. This allows for gaps between the children
Index: lib/Makefile
===================================================================
--- lib/Makefile
+++ lib/Makefile
@@ -101,7 +101,9 @@
lldbPluginSymbolVendorMacOSX.a \
lldbPluginProcessDarwin.a \
lldbPluginProcessMachCore.a \
- lldbPluginSystemRuntimeMacOSX.a
+ lldbPluginSystemRuntimeMacOSX.a \
+ lldbPluginProcessElfCore.a \
+ lldbPluginJITLoaderGDB.a
endif
ifeq ($(HOST_OS),Linux)
Index: source/Core/Section.cpp
===================================================================
--- source/Core/Section.cpp
+++ source/Core/Section.cpp
@@ -27,6 +27,7 @@
addr_t byte_size,
lldb::offset_t file_offset,
lldb::offset_t file_size,
+ uint32_t log2align,
uint32_t flags) :
ModuleChild (module_sp),
UserID (sect_id),
@@ -39,6 +40,7 @@
m_byte_size (byte_size),
m_file_offset (file_offset),
m_file_size (file_size),
+ m_log2align (log2align),
m_children (),
m_fake (false),
m_encrypted (false),
@@ -58,6 +60,7 @@
addr_t byte_size,
lldb::offset_t file_offset,
lldb::offset_t file_size,
+ uint32_t log2align,
uint32_t flags) :
ModuleChild (module_sp),
UserID (sect_id),
@@ -70,6 +73,7 @@
m_byte_size (byte_size),
m_file_offset (file_offset),
m_file_size (file_size),
+ m_log2align (log2align),
m_children (),
m_fake (false),
m_encrypted (false),
@@ -142,7 +146,7 @@
if (load_base_addr != LLDB_INVALID_ADDRESS)
load_base_addr += GetOffset();
}
- else
+ if (load_base_addr == LLDB_INVALID_ADDRESS)
{
load_base_addr = target->GetSectionLoadList().GetSectionLoadAddress (const_cast<Section *>(this)->shared_from_this());
}
Index: source/Expression/IRExecutionUnit.cpp
===================================================================
--- source/Expression/IRExecutionUnit.cpp
+++ source/Expression/IRExecutionUnit.cpp
@@ -917,6 +917,7 @@
record.m_size,
record.m_host_address, // file_offset (which is the host address for the data)
record.m_size, // file_size
+ 0,
record.m_permissions)); // flags
section_list.AddSection (section_sp);
}
Index: source/Plugins/JITLoader/GDB/JITLoaderGDB.cpp
===================================================================
--- source/Plugins/JITLoader/GDB/JITLoaderGDB.cpp
+++ source/Plugins/JITLoader/GDB/JITLoaderGDB.cpp
@@ -144,6 +144,29 @@
return instance->ReadJITDescriptor(false);
}
+static void updateSectionLoadAddress(const SectionList §ion_list, Target &target, uint64_t symbolfile_addr, uint64_t symbolfile_size, uint64_t &vmaddrheuristic)
+{
+ const uint32_t num_sections = section_list.GetSize();
+ for (uint32_t i = 0; i<num_sections; ++i)
+ {
+ SectionSP section_sp(section_list.GetSectionAtIndex(i));
+ if (section_sp)
+ {
+ if(section_sp->IsFake()) {
+ updateSectionLoadAddress(section_sp->GetChildren(), target, symbolfile_addr, symbolfile_size, vmaddrheuristic);
+ }
+ else if (section_sp->GetFileAddress() > vmaddrheuristic)
+ target.SetSectionLoadAddress(section_sp, section_sp->GetFileAddress(), true);
+ else {
+ section_sp->SetFileAddress(symbolfile_addr+section_sp->GetFileOffset());
+ target.SetSectionLoadAddress(section_sp, symbolfile_addr+section_sp->GetFileOffset(), true);
+ }
+ // This is an upper bound, but a good enough heuristic
+ vmaddrheuristic += section_sp->GetByteSize() + (2<<section_sp->GetLog2Align());
+ }
+ }
+}
+
bool
JITLoaderGDB::ReadJITDescriptor(bool all_entries)
{
@@ -212,7 +235,23 @@
m_jit_objects.insert(
std::pair<lldb::addr_t, const lldb::ModuleSP>(
symbolfile_addr, module_sp));
- module_sp->SetLoadAddress(target, 0, true, changed);
+ if (module_sp->GetObjectFile()->GetPluginName() == ConstString("mach-o"))
+ {
+ ObjectFile *image_object_file = module_sp->GetObjectFile();
+ if (image_object_file)
+ {
+ const SectionList *section_list = image_object_file->GetSectionList ();
+ if (section_list)
+ {
+ uint64_t vmaddrheuristic = 0;
+ updateSectionLoadAddress(*section_list, target, symbolfile_addr, symbolfile_size, vmaddrheuristic);
+ }
+ }
+ }
+ else
+ {
+ module_sp->SetLoadAddress(target, 0, true, changed);
+ }
// load the symbol table right away
module_sp->GetObjectFile()->GetSymtab();
@@ -295,9 +334,7 @@
JITLoaderGDB::CreateInstance(Process *process, bool force)
{
JITLoaderSP jit_loader_sp;
- ArchSpec arch (process->GetTarget().GetArchitecture());
- if (arch.GetTriple().getVendor() != llvm::Triple::Apple)
- jit_loader_sp.reset(new JITLoaderGDB(process));
+ jit_loader_sp.reset(new JITLoaderGDB(process));
return jit_loader_sp;
}
Index: source/Plugins/Makefile
===================================================================
--- source/Plugins/Makefile
+++ source/Plugins/Makefile
@@ -33,6 +33,8 @@
#DIRS += Process/MacOSX-User
DIRS += Process/mach-core
DIRS += SystemRuntime/MacOSX
+DIRS += Process/elf-core
+DIRS += JITLoader/GDB
endif
ifeq ($(HOST_OS),Linux)
Index: source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
===================================================================
--- source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -1236,6 +1236,7 @@
vm_size, // VM size in bytes of this section.
header.sh_offset, // Offset of this section in the file.
file_size, // Size of the section as found in the file.
+ __builtin_ffs(header.sh_addralign), // Alignment of the section
header.sh_flags)); // Flags for this section.
if (is_thread_specific)
Index: source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
===================================================================
--- source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
+++ source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
@@ -1220,6 +1220,7 @@
load_cmd.vmsize, // VM size in bytes of this section
load_cmd.fileoff, // Offset to the data for this section in the file
load_cmd.filesize, // Size in bytes of this section as found in the the file
+ 0, // Segments have no alignment information
load_cmd.flags)); // Flags for this section
segment_sp->SetIsEncrypted (segment_is_encrypted);
@@ -1348,6 +1349,7 @@
sect64.size, // VM size in bytes of this section
sect64.offset, // Offset to the data for this section in the file
sect64.offset ? sect64.size : 0, // Size in bytes of this section as found in the the file
+ sect64.align,
load_cmd.flags)); // Flags for this section
segment_sp->SetIsFake(true);
@@ -1480,6 +1482,7 @@
sect64.size,
sect64.offset,
sect64.offset == 0 ? 0 : sect64.size,
+ sect64.align,
sect64.flags));
// Set the section to be encrypted to match the segment
@@ -1890,7 +1893,7 @@
uint32_t memory_module_load_level = eMemoryModuleLoadLevelComplete;
- if (process)
+ if (process && m_header.filetype != llvm::MachO::MH_OBJECT)
{
Target &target = process->GetTarget();
Index: source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
===================================================================
--- source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
+++ source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
@@ -753,6 +753,7 @@
m_sect_headers[idx].vmsize, // VM size in bytes of this section
m_sect_headers[idx].offset, // Offset to the data for this section in the file
m_sect_headers[idx].size, // Size in bytes of this section as found in the the file
+ m_coff_header_opt.sect_alignment, // Section alignment
m_sect_headers[idx].flags)); // Flags for this section
//section_sp->SetIsEncrypted (segment_is_encrypted);
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