diff --git a/lld/test/wasm/tls-non-shared-memory-basic.s b/lld/test/wasm/tls-non-shared-memory-basic.s new file mode 100644 --- /dev/null +++ b/lld/test/wasm/tls-non-shared-memory-basic.s @@ -0,0 +1,63 @@ +# Simplified version of tls-non-shared-memory.s that does not reference +# __tls_base + +# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s + +.section .tdata.tls1,"",@ +.globl tls1 +.p2align 2 +tls1: + .int32 43 + .size tls1, 2 + +.section .custom_section.target_features,"",@ + .int8 2 + .int8 43 + .int8 7 + .ascii "atomics" + .int8 43 + .int8 11 + .ascii "bulk-memory" + +# RUN: wasm-ld --no-gc-sections --no-entry -o %t.wasm %t.o +# RUN: obj2yaml %t.wasm | FileCheck %s + +# RUN: wasm-ld --experimental-pic -shared -o %t.so %t.o +# RUN: obj2yaml %t.so | FileCheck %s --check-prefix=PIC + +# CHECK: - Type: DATA +# CHECK-NEXT: Segments: +# CHECK-NEXT: - SectionOffset: 7 +# CHECK-NEXT: InitFlags: 0 +# CHECK-NEXT: Offset: +# CHECK-NEXT: Opcode: I32_CONST +# CHECK-NEXT: Value: 1024 +# CHECK-NEXT: Content: 2B000000 +# CHECK-NEXT: - Type: CUSTOM +# CHECK-NOT: - Type: IMPORT + + +# In PIC mode we expect TLS data and non-TLS data to be merged into +# a single segment which is initialized via the __memory_base import + +# PIC: - Type: IMPORT +# PIC-NEXT: Imports: +# PIC-NEXT: - Module: env +# PIC-NEXT: Field: memory +# PIC-NEXT: Kind: MEMORY +# PIC-NEXT: Memory: +# PIC-NEXT: Minimum: 0x1 +# PIC-NEXT: - Module: env +# PIC-NEXT: Field: __memory_base +# PIC-NEXT: Kind: GLOBAL +# PIC-NEXT: GlobalType: I32 + +# PIC: - Type: DATA +# PIC-NEXT: Segments: +# PIC-NEXT: - SectionOffset: 6 +# PIC-NEXT: InitFlags: 0 +# PIC-NEXT: Offset: +# PIC-NEXT: Opcode: GLOBAL_GET +# PIC-NEXT: Index: 0 +# PIC-NEXT: Content: 2B000000 +# PIC-NEXT: - Type: CUSTOM diff --git a/lld/wasm/Driver.cpp b/lld/wasm/Driver.cpp --- a/lld/wasm/Driver.cpp +++ b/lld/wasm/Driver.cpp @@ -651,7 +651,7 @@ WasmSym::stackPointer->markLive(); } - if (config->sharedMemory && !config->relocatable) { + if (config->sharedMemory) { WasmSym::tlsBase = createGlobalVariable("__tls_base", true); WasmSym::tlsSize = createGlobalVariable("__tls_size", false); WasmSym::tlsAlign = createGlobalVariable("__tls_align", false); diff --git a/lld/wasm/Writer.cpp b/lld/wasm/Writer.cpp --- a/lld/wasm/Writer.cpp +++ b/lld/wasm/Writer.cpp @@ -278,7 +278,7 @@ auto *tlsAlign = cast(WasmSym::tlsAlign); setGlobalPtr(tlsAlign, int64_t{1} << seg->alignment); - } else { + } else if (WasmSym::tlsBase) { auto *tlsBase = cast(WasmSym::tlsBase); setGlobalPtr(tlsBase, memoryPtr); }