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-rw-r--r--llvm/tools/llvm-objcopy/ObjcopyOpts.td3
-rw-r--r--llvm/tools/llvm-objcopy/llvm-objcopy.cpp17
2 files changed, 20 insertions, 0 deletions
diff --git a/llvm/tools/llvm-objcopy/ObjcopyOpts.td b/llvm/tools/llvm-objcopy/ObjcopyOpts.td
index 4e337e6db9e..2af2108d98d 100644
--- a/llvm/tools/llvm-objcopy/ObjcopyOpts.td
+++ b/llvm/tools/llvm-objcopy/ObjcopyOpts.td
@@ -27,6 +27,9 @@ defm add_gnu_debuglink : Eq<"add-gnu-debuglink">,
defm remove_section : Eq<"remove-section">,
MetaVarName<"section">,
HelpText<"Remove <section>">;
+defm rename_section : Eq<"rename-section">,
+ MetaVarName<"old=new">,
+ HelpText<"Renames a section from old to new">;
defm redefine_symbol : Eq<"redefine-sym">,
MetaVarName<"old=new">,
HelpText<"Change the name of a symbol old to new">;
diff --git a/llvm/tools/llvm-objcopy/llvm-objcopy.cpp b/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
index 12e9ca17e19..3a25e3f690b 100644
--- a/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
+++ b/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
@@ -133,6 +133,7 @@ struct CopyConfig {
std::vector<StringRef> SymbolsToWeaken;
std::vector<StringRef> SymbolsToRemove;
std::vector<StringRef> SymbolsToKeep;
+ StringMap<StringRef> SectionsToRename;
StringMap<StringRef> SymbolsToRename;
bool StripAll = false;
bool StripAllGNU = false;
@@ -430,6 +431,14 @@ static void HandleArgs(const CopyConfig &Config, Object &Obj,
Obj.removeSections(RemovePred);
+ if (!Config.SectionsToRename.empty()) {
+ for (auto &Sec : Obj.sections()) {
+ const auto Iter = Config.SectionsToRename.find(Sec.Name);
+ if (Iter != Config.SectionsToRename.end())
+ Sec.Name = Iter->second;
+ }
+ }
+
if (!Config.AddSection.empty()) {
for (const auto &Flag : Config.AddSection) {
auto SecPair = Flag.split("=");
@@ -587,6 +596,14 @@ static CopyConfig ParseObjcopyOptions(ArrayRef<const char *> ArgsArr) {
error("Multiple redefinition of symbol " + Old2New.first);
}
+ for (auto Arg : InputArgs.filtered(OBJCOPY_rename_section)) {
+ if (!StringRef(Arg->getValue()).contains('='))
+ error("Bad format for --rename-section");
+ auto Old2New = StringRef(Arg->getValue()).split('=');
+ if (!Config.SectionsToRename.insert(Old2New).second)
+ error("Already have a section rename for " + Old2New.first);
+ }
+
for (auto Arg : InputArgs.filtered(OBJCOPY_remove_section))
Config.ToRemove.push_back(Arg->getValue());
for (auto Arg : InputArgs.filtered(OBJCOPY_keep))
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