Function wasm2c_marshal_and_writeback_prestat

src/writeback.rs:43–60

(
    ctx: &mut VmCtx,
    addr: usize,
    res: RuntimeResult<u32>,
)

#[ensures(ctx_safe(ctx))]
#[ensures(trace_safe(trace, ctx))]
pub fn wasm2c_marshal_and_writeback_prestat(
    ctx: &mut VmCtx,
    addr: usize,
    res: RuntimeResult<u32>,
) -> u32 {
    if !ctx.fits_in_lin_mem_usize(addr, 12) {
        return RuntimeError::Eoverflow.into();
    }
    //log::debug!("wasm2c_marshal_and_writeback_prestat: {:?}", result);
    match res {
        Ok(r) => {
            ctx.write_u32(addr, 0);
            ctx.write_u64(addr + 4, r as u64); // writeback result
            0
        }
        Err(err) => err.into(),
    }
}

#[with_ghost_var(trace: &mut Trace)]
#[requires(ctx_safe(ctx))]