[llvm-objcopy] [COFF] Implement --only-keep-debug
Differential Revision: https://reviews.llvm.org/D56840
llvm-svn: 351662
diff --git a/llvm/tools/llvm-objcopy/COFF/COFFObjcopy.cpp b/llvm/tools/llvm-objcopy/COFF/COFFObjcopy.cpp
index 13d8efd..60afbf7 100644
--- a/llvm/tools/llvm-objcopy/COFF/COFFObjcopy.cpp
+++ b/llvm/tools/llvm-objcopy/COFF/COFFObjcopy.cpp
@@ -46,6 +46,16 @@
return false;
});
+ if (Config.OnlyKeepDebug) {
+ // For --only-keep-debug, we keep all other sections, but remove their
+ // content. The VirtualSize field in the section header is kept intact.
+ Obj.truncateSections([](const Section &Sec) {
+ return !isDebugSection(Sec) && Sec.Name != ".buildid" &&
+ ((Sec.Header.Characteristics &
+ (IMAGE_SCN_CNT_CODE | IMAGE_SCN_CNT_INITIALIZED_DATA)) != 0);
+ });
+ }
+
// StripAll removes all symbols and thus also removes all relocations.
if (Config.StripAll || Config.StripAllGNU)
for (Section &Sec : Obj.getMutableSections())