[llvm-objcopy][MachO] Rebuild the symbol/string table in the writer
Summary: Build the string table using StringTableBuilder, reassign symbol indices, and update symbol indices in relocations to allow adding/modifying/removing symbols from the object.
Reviewers: alexshap, rupprecht, jhenderson
Reviewed By: alexshap
Subscribers: mgorny, jakehehrlich, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D63309
llvm-svn: 364000
diff --git a/llvm/tools/llvm-objcopy/MachO/Object.cpp b/llvm/tools/llvm-objcopy/MachO/Object.cpp
new file mode 100644
index 0000000..264f39c
--- /dev/null
+++ b/llvm/tools/llvm-objcopy/MachO/Object.cpp
@@ -0,0 +1,15 @@
+#include "Object.h"
+#include "../llvm-objcopy.h"
+
+namespace llvm {
+namespace objcopy {
+namespace macho {
+
+const SymbolEntry *SymbolTable::getSymbolByIndex(uint32_t Index) const {
+ assert(Index < Symbols.size() && "invalid symbol index");
+ return Symbols[Index].get();
+}
+
+} // end namespace macho
+} // end namespace objcopy
+} // end namespace llvm