[WebAssembly] Add a EM_WEBASSEMBLY value, and several bits of code that use it.

A request has been made to the official registry, but an official value is
not yet available. This patch uses a temporary value in order to support
development. When an official value is recieved, the value of EM_WEBASSEMBLY
will be updated.

llvm-svn: 257517

3 files changed, 10 insertions, 5 deletions

diff --git a/llvm/lib/Object/ELF.cpp b/llvm/lib/Object/ELF.cpp
index 62c27cc427a..12b772d930b 100644
--- a/llvm/lib/Object/ELF.cpp
+++ b/llvm/lib/Object/ELF.cpp
@@ -91,6 +91,13 @@ StringRef getELFRelocationTypeName(uint32_t Machine, uint32_t Type) {
       break;
     }
     break;
+  case ELF::EM_WEBASSEMBLY:
+    switch (Type) {
+#include "llvm/Support/ELFRelocs/WebAssembly.def"
+    default:
+      break;
+    }
+    break;
   default:
     break;
   }
diff --git a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyELFObjectWriter.cpp b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyELFObjectWriter.cpp
index f9012d8fb77..2bb58b33934 100644
--- a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyELFObjectWriter.cpp
+++ b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyELFObjectWriter.cpp
@@ -30,13 +30,10 @@ protected:
 };
 } // end anonymous namespace
 
-// FIXME: Use EM_NONE as a temporary hack. Should we decide to pursue ELF
-// writing seriously, we should email generic-abi@googlegroups.com and ask
-// for our own ELF code.
 WebAssemblyELFObjectWriter::WebAssemblyELFObjectWriter(bool Is64Bit,
                                                        uint8_t OSABI)
-    : MCELFObjectTargetWriter(Is64Bit, OSABI, ELF::EM_NONE,
-                              /*HasRelocationAddend=*/true) {}
+    : MCELFObjectTargetWriter(Is64Bit, OSABI, ELF::EM_WEBASSEMBLY,
+                              /*HasRelocationAddend=*/false) {}
 
 unsigned WebAssemblyELFObjectWriter::GetRelocType(const MCValue &Target,
                                                   const MCFixup &Fixup,
diff --git a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyTargetStreamer.h b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyTargetStreamer.h
index 64334b45189..c66a51574ef 100644
--- a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyTargetStreamer.h
+++ b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyTargetStreamer.h
@@ -16,6 +16,7 @@
 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
 #define LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
 
+#include "llvm/CodeGen/MachineValueType.h"
 #include "llvm/MC/MCStreamer.h"
 
 namespace llvm {