diff options
| author | Brendan Dahl <brendan.dahl@gmail.com> | 2023-07-11 15:12:26 -0700 |
|---|---|---|
| committer | Derek Schuff <dschuff@chromium.org> | 2023-07-11 15:17:26 -0700 |
| commit | 220fe00a7c0f73164711f0d6cdefacef264b85dc (patch) | |
| tree | a570739a4f329a3363274f3c3a99456c694df424 /llvm/lib/Object/WasmObjectFile.cpp | |
| parent | 78af051ff0e16db73201b1370e34206a6a4c1b93 (diff) | |
[WebAssembly] Support `annotate` clang attributes for marking functions.
Annotation attributes may be attached to a function to mark it with
custom data that will be contained in the final Wasm file. The
annotation causes a custom section named
"func_attr.annotate.<name>.<arg0>.<arg1>..." to be created that will
contain each function's index value that was marked with the annotation.
A new patchable relocation type for function indexes had to be created so
the custom section could be updated during linking.
Reviewed By: sbc100
Differential Revision: https://reviews.llvm.org/D150803
Diffstat (limited to 'llvm/lib/Object/WasmObjectFile.cpp')
| -rw-r--r-- | llvm/lib/Object/WasmObjectFile.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Object/WasmObjectFile.cpp b/llvm/lib/Object/WasmObjectFile.cpp index 5dbe685a140b..a72242bc4ac2 100644 --- a/llvm/lib/Object/WasmObjectFile.cpp +++ b/llvm/lib/Object/WasmObjectFile.cpp @@ -948,6 +948,7 @@ Error WasmObjectFile::parseRelocSection(StringRef Name, ReadContext &Ctx) { Reloc.Index = readVaruint32(Ctx); switch (type) { case wasm::R_WASM_FUNCTION_INDEX_LEB: + case wasm::R_WASM_FUNCTION_INDEX_I32: case wasm::R_WASM_TABLE_INDEX_SLEB: case wasm::R_WASM_TABLE_INDEX_SLEB64: case wasm::R_WASM_TABLE_INDEX_I32: @@ -1045,6 +1046,7 @@ Error WasmObjectFile::parseRelocSection(StringRef Name, ReadContext &Ctx) { Reloc.Type == wasm::R_WASM_MEMORY_ADDR_LOCREL_I32 || Reloc.Type == wasm::R_WASM_SECTION_OFFSET_I32 || Reloc.Type == wasm::R_WASM_FUNCTION_OFFSET_I32 || + Reloc.Type == wasm::R_WASM_FUNCTION_INDEX_I32 || Reloc.Type == wasm::R_WASM_GLOBAL_INDEX_I32) Size = 4; if (Reloc.Type == wasm::R_WASM_TABLE_INDEX_I64 || |