[llvm-objcopy] Initial support for wasm in llvm-objcopy

Currently only supports simple copying, other operations to follow.

Reviewers: sbc100, alexshap, jhenderson

Differential Revision: https://reviews.llvm.org/D70930

This is a reland of a928d127a with a one-line fix to ensure that
the wasm version number is written as little-endian (it's the only
field in all of the binary format that's not a single byte or an
LEB, but we may have to watch out more when we start handling the
linking section).

1 files changed, 5 insertions, 1 deletions

diff --git a/llvm/tools/llvm-objcopy/llvm-objcopy.cpp b/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
index e662f35..61efc74 100644
--- a/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
+++ b/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
@@ -8,10 +8,11 @@
 
 #include "llvm-objcopy.h"
 #include "Buffer.h"
+#include "COFF/COFFObjcopy.h"
 #include "CopyConfig.h"
 #include "ELF/ELFObjcopy.h"
-#include "COFF/COFFObjcopy.h"
 #include "MachO/MachOObjcopy.h"
+#include "wasm/WasmObjcopy.h"
 
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallVector.h"
@@ -25,6 +26,7 @@
 #include "llvm/Object/ELFTypes.h"
 #include "llvm/Object/Error.h"
 #include "llvm/Object/MachO.h"
+#include "llvm/Object/Wasm.h"
 #include "llvm/Option/Arg.h"
 #include "llvm/Option/ArgList.h"
 #include "llvm/Option/Option.h"
@@ -172,6 +174,8 @@ static Error executeObjcopyOnBinary(CopyConfig &Config, object::Binary &In,
     return coff::executeObjcopyOnBinary(Config, *COFFBinary, Out);
   else if (auto *MachOBinary = dyn_cast<object::MachOObjectFile>(&In))
     return macho::executeObjcopyOnBinary(Config, *MachOBinary, Out);
+  else if (auto *WasmBinary = dyn_cast<object::WasmObjectFile>(&In))
+    return objcopy::wasm::executeObjcopyOnBinary(Config, *WasmBinary, Out);
   else
     return createStringError(object_error::invalid_file_type,
                              "unsupported object file format");