[WebAssembly] Fix getSymbolValue() for data symbols

This is mostly a fix for the output of `llvm-nm`

See Bug 34392: https://bugs.llvm.org//show_bug.cgi?id=34392

Differential Revision: https://reviews.llvm.org/D37359

llvm-svn: 312294

1 files changed, 6 insertions, 1 deletions

diff --git a/llvm/lib/Object/WasmObjectFile.cpp b/llvm/lib/Object/WasmObjectFile.cpp
index 8a2fb38..ad8c2b7 100644
--- a/llvm/lib/Object/WasmObjectFile.cpp
+++ b/llvm/lib/Object/WasmObjectFile.cpp
@@ -786,8 +786,13 @@ uint64_t WasmObjectFile::getSymbolValueImpl(DataRefImpl Symb) const {
   case WasmSymbol::SymbolType::GLOBAL_IMPORT:
     return 0;
   case WasmSymbol::SymbolType::FUNCTION_EXPORT:
-  case WasmSymbol::SymbolType::GLOBAL_EXPORT:
     return Exports[Sym.ElementIndex].Index;
+  case WasmSymbol::SymbolType::GLOBAL_EXPORT: {
+    uint32_t GlobalIndex = Exports[Sym.ElementIndex].Index;
+    assert(GlobalIndex < Globals.size());
+    const wasm::WasmGlobal& Global = Globals[GlobalIndex];
+    return Global.InitExpr.Value.Int32;
+  }
   case WasmSymbol::SymbolType::DEBUG_FUNCTION_NAME:
     return Sym.ElementIndex;
   }