From 1f59b65d8befc8512ff9045bb371ea5ec379a78c Mon Sep 17 00:00:00 2001 From: Yuri Iozzelli Date: Fri, 25 Feb 2022 16:36:35 +0100 Subject: Add initial support for code metadata (#1840) See https://github.com/WebAssembly/tool-conventions/blob/main/CodeMetadata.md for the specification. In particular this pr implements the following: - Parsing code metadata sections in BinaryReader, providing appropriate callbacks that a BinaryReaderDelegate can implement: - BinaryReaderObjdump: show the sections in a human-readable form - BinaryReaderIr: add code metadata in the IR as expressions - Parsing code metadata annotations in text format, adding them in the IR like the BinaryReaderIR does - Writing the code metadata present in the IR in the proper sections when converting IR to binary - Support in wasm-decompiler for showing code metadata as comments in the pseudo-code All the features have corresponding tests. Support for code metadata is gated through the --enable-code-metadata feature. For reading/writing in the text format, --enable-annotations is also required. Missing features: Support for function-level code metadata (offset 0) Extensive validation in validator.cc (like making sure that all metadata instances are at the same code offset of an instruction) --- test/help/wast2json.txt | 1 + 1 file changed, 1 insertion(+) (limited to 'test/help/wast2json.txt') diff --git a/test/help/wast2json.txt b/test/help/wast2json.txt index 90278883..95fa3a3e 100644 --- a/test/help/wast2json.txt +++ b/test/help/wast2json.txt @@ -28,6 +28,7 @@ options: --disable-bulk-memory Disable Bulk-memory operations --disable-reference-types Disable Reference types (externref) --enable-annotations Enable Custom annotation syntax + --enable-code-metadata Enable Code metadata --enable-gc Enable Garbage collection --enable-memory64 Enable 64-bit memory --enable-multi-memory Enable Multi-memory -- cgit v1.2.3