• Clemens Backes's avatar
    [wasm][memory64] Start implementing the memory64 proposal · 18da0875
    Clemens Backes authored
    This is a first small step for implementing the memory64 proposal:
    1. Add a feature flag.
    2. Add the 0x04 and 0x05 limits flag for memory64.
    3. Read memory limits as LEB-encoded u64 (instead of u32) if a memory64
       limit flag was read.
    4. Unify {MaximumFlag} and {MemoryFlag}, which was used inconsistently
       before.
    5. Add test for memory limits encoded with >5 bytes.
    6. Move some macros from module-decoder-unittest.cc to wasm-macro-gen.h.
    
    Note that still the same limits for the maximum number of pages applies
    as before, i.e. you cannot specify a memory >4GB yet. But you can encode
    that small number in >5 bytes.
    
    R=manoskouk@chromium.org
    
    Bug: v8:10949
    Change-Id: I90a4f08426ae714a67440281785eb00cfc24a349
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2423712
    Commit-Queue: Clemens Backes <clemensb@chromium.org>
    Reviewed-by: 's avatarManos Koukoutos <manoskouk@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#70110}
    18da0875
decoder.h 16.7 KB