[WebAssembly] Add skeleton MC support for the Wasm container format

This just adds the basic skeleton for supporting a new object file format.
All of the actual encoding will be implemented in followup patches.

Differential Revision: https://reviews.llvm.org/D26722

llvm-svn: 295803

1 files changed, 27 insertions, 0 deletions

diff --git a/llvm/lib/MC/MCAsmInfoWasm.cpp b/llvm/lib/MC/MCAsmInfoWasm.cpp
new file mode 100644
index 00000000000..aa26616dda3
--- /dev/null
+++ b/llvm/lib/MC/MCAsmInfoWasm.cpp
@@ -0,0 +1,27 @@
+//===-- MCAsmInfoWasm.cpp - Wasm asm properties -----------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines target asm properties related what form asm statements
+// should take in general on Wasm-based targets
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/MC/MCAsmInfoWasm.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCSectionWasm.h"
+using namespace llvm;
+
+void MCAsmInfoWasm::anchor() { }
+
+MCAsmInfoWasm::MCAsmInfoWasm() {
+  HasIdentDirective = true;
+  WeakRefDirective = "\t.weak\t";
+  PrivateGlobalPrefix = ".L";
+  PrivateLabelPrefix = ".L";
+}