From 63ebb81386393c84d990e5e1bd52938eeb596f47 Mon Sep 17 00:00:00 2001 From: Sam Clegg Date: Fri, 29 Sep 2017 16:50:08 +0000 Subject: [WebAssembly] Allow each data segment to specify its own alignment Also, add a flags field as we will almost certainly be needing that soon too. Differential Revision: https://reviews.llvm.org/D38296 llvm-svn: 314534 --- llvm/lib/Object/WasmObjectFile.cpp | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'llvm/lib/Object/WasmObjectFile.cpp') diff --git a/llvm/lib/Object/WasmObjectFile.cpp b/llvm/lib/Object/WasmObjectFile.cpp index 1954335..15a78df 100644 --- a/llvm/lib/Object/WasmObjectFile.cpp +++ b/llvm/lib/Object/WasmObjectFile.cpp @@ -193,7 +193,6 @@ static Error readSection(WasmSection &Section, const uint8_t *&Ptr, WasmObjectFile::WasmObjectFile(MemoryBufferRef Buffer, Error &Err) : ObjectFile(Binary::ID_Wasm, Buffer) { - LinkingData.DataAlignment = 0; LinkingData.DataSize = 0; ErrorAsOutParameter ErrAsOutParam(&Err); @@ -385,16 +384,16 @@ Error WasmObjectFile::parseLinkingSection(const uint8_t *Ptr, case wasm::WASM_DATA_SIZE: LinkingData.DataSize = readVaruint32(Ptr); break; - case wasm::WASM_DATA_ALIGNMENT: - LinkingData.DataAlignment = readVaruint32(Ptr); - break; - case wasm::WASM_SEGMENT_NAMES: { + case wasm::WASM_SEGMENT_INFO: { uint32_t Count = readVaruint32(Ptr); if (Count > DataSegments.size()) return make_error("Too many segment names", object_error::parse_failed); - for (uint32_t i = 0; i < Count; i++) + for (uint32_t i = 0; i < Count; i++) { DataSegments[i].Data.Name = readString(Ptr); + DataSegments[i].Data.Alignment = readVaruint32(Ptr); + DataSegments[i].Data.Flags = readVaruint32(Ptr); + } break; } case wasm::WASM_STACK_POINTER: @@ -734,6 +733,8 @@ Error WasmObjectFile::parseDataSection(const uint8_t *Ptr, const uint8_t *End) { return Err; uint32_t Size = readVaruint32(Ptr); Segment.Data.Content = ArrayRef(Ptr, Size); + Segment.Data.Alignment = 0; + Segment.Data.Flags = 0; Segment.SectionOffset = Ptr - Start; Ptr += Size; DataSegments.push_back(Segment); -- cgit v1.1