diff options
Diffstat (limited to 'lld/wasm/Driver.cpp')
| -rw-r--r-- | lld/wasm/Driver.cpp | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lld/wasm/Driver.cpp b/lld/wasm/Driver.cpp index 3de69954e0a..900cd051dcf 100644 --- a/lld/wasm/Driver.cpp +++ b/lld/wasm/Driver.cpp @@ -454,6 +454,7 @@ createUndefinedGlobal(StringRef name, llvm::wasm::WasmGlobalType *type) { // Create ABI-defined synthetic symbols static void createSyntheticSymbols() { static WasmSignature nullSignature = {{}, {}}; + static WasmSignature i32ArgSignature = {{}, {ValType::I32}}; static llvm::wasm::WasmGlobalType globalTypeI32 = {WASM_TYPE_I32, false}; static llvm::wasm::WasmGlobalType mutableGlobalTypeI32 = {WASM_TYPE_I32, true}; @@ -516,6 +517,30 @@ static void createSyntheticSymbols() { WasmSym::heapBase = symtab->addOptionalDataSymbol("__heap_base"); } + if (config->sharedMemory && !config->shared) { + llvm::wasm::WasmGlobal tlsBaseGlobal; + tlsBaseGlobal.Type = {WASM_TYPE_I32, true}; + tlsBaseGlobal.InitExpr.Value.Int32 = 0; + tlsBaseGlobal.InitExpr.Opcode = WASM_OPCODE_I32_CONST; + tlsBaseGlobal.SymbolName = "__tls_base"; + WasmSym::tlsBase = + symtab->addSyntheticGlobal("__tls_base", WASM_SYMBOL_VISIBILITY_HIDDEN, + make<InputGlobal>(tlsBaseGlobal, nullptr)); + + llvm::wasm::WasmGlobal tlsSizeGlobal; + tlsSizeGlobal.Type = {WASM_TYPE_I32, false}; + tlsSizeGlobal.InitExpr.Value.Int32 = 0; + tlsSizeGlobal.InitExpr.Opcode = WASM_OPCODE_I32_CONST; + tlsSizeGlobal.SymbolName = "__tls_size"; + WasmSym::tlsSize = + symtab->addSyntheticGlobal("__tls_size", WASM_SYMBOL_VISIBILITY_HIDDEN, + make<InputGlobal>(tlsSizeGlobal, nullptr)); + + WasmSym::initTLS = symtab->addSyntheticFunction( + "__wasm_init_tls", WASM_SYMBOL_VISIBILITY_HIDDEN, + make<SyntheticFunction>(i32ArgSignature, "__wasm_init_tls")); + } + WasmSym::dsoHandle = symtab->addSyntheticDataSymbol( "__dso_handle", WASM_SYMBOL_VISIBILITY_HIDDEN); } |
