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authorJim Grosbach <grosbach@apple.com>2012-05-18 19:12:01 +0000
committerJim Grosbach <grosbach@apple.com>2012-05-18 19:12:01 +0000
commit3e96531186ba574b0c25a4be62d24b8b7d752c9f (patch)
tree7d7125c9e62b05642d228d02100138e98c3da272 /tools
parent18e2f6e94cf9dc48bfc6dfa3848971aa88e334da (diff)
Refactor data-in-code annotations.
Use a dedicated MachO load command to annotate data-in-code regions. This is the same format the linker produces for final executable images, allowing consistency of representation and use of introspection tools for both object and executable files. Data-in-code regions are annotated via ".data_region"/".end_data_region" directive pairs, with an optional region type. data_region_directive := ".data_region" { region_type } region_type := "jt8" | "jt16" | "jt32" | "jta32" end_data_region_directive := ".end_data_region" The previous handling of ARM-style "$d.*" labels was broken and has been removed. Specifically, it didn't handle ARM vs. Thumb mode when marking the end of the section. rdar://11459456 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157062 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools')
-rw-r--r--tools/macho-dump/macho-dump.cpp32
1 files changed, 32 insertions, 0 deletions
diff --git a/tools/macho-dump/macho-dump.cpp b/tools/macho-dump/macho-dump.cpp
index f65c79595a9..20deda9a0cb 100644
--- a/tools/macho-dump/macho-dump.cpp
+++ b/tools/macho-dump/macho-dump.cpp
@@ -332,6 +332,35 @@ static int DumpLinkeditDataCommand(MachOObject &Obj,
return 0;
}
+static int DumpDataInCodeDataCommand(MachOObject &Obj,
+ const MachOObject::LoadCommandInfo &LCI) {
+ InMemoryStruct<macho::LinkeditDataLoadCommand> LLC;
+ Obj.ReadLinkeditDataLoadCommand(LCI, LLC);
+ if (!LLC)
+ return Error("unable to read segment load command");
+
+ outs() << " ('dataoff', " << LLC->DataOffset << ")\n"
+ << " ('datasize', " << LLC->DataSize << ")\n"
+ << " ('_data_regions', [\n";
+
+
+ unsigned NumRegions = LLC->DataSize / 8;
+ for (unsigned i = 0; i < NumRegions; ++i) {
+ InMemoryStruct<macho::DataInCodeTableEntry> DICE;
+ Obj.ReadDataInCodeTableEntry(LLC->DataOffset, i, DICE);
+ if (!DICE)
+ return Error("unable to read DataInCodeTableEntry");
+ outs() << " # DICE " << i << "\n"
+ << " ('offset', " << DICE->Offset << ")\n"
+ << " ('length', " << DICE->Length << ")\n"
+ << " ('kind', " << DICE->Kind << ")\n";
+ }
+
+ outs() <<" ])\n";
+
+ return 0;
+}
+
static int DumpLoadCommand(MachOObject &Obj, unsigned Index) {
const MachOObject::LoadCommandInfo &LCI = Obj.getLoadCommandInfo(Index);
@@ -358,6 +387,9 @@ static int DumpLoadCommand(MachOObject &Obj, unsigned Index) {
case macho::LCT_FunctionStarts:
Res = DumpLinkeditDataCommand(Obj, LCI);
break;
+ case macho::LCT_DataInCode:
+ Res = DumpDataInCodeDataCommand(Obj, LCI);
+ break;
default:
Warning("unknown load command: " + Twine(LCI.Command.Type));
break;