Method load_memory_length

winch/codegen/src/codegen/mod.rs:1509–1522

Retrieves the size of the memory, pushing the result to the value stack.

(&mut self, heap_data: &HeapData, size_reg: Reg)

    /// Retrieves the size of the memory, pushing the result to the value stack.
    fn load_memory_length(&mut self, heap_data: &HeapData, size_reg: Reg) -> Result<()> {
        self.masm.with_scratch::<IntScratch, _>(|masm, scratch| {
            let base = if let Some(offset) = heap_data.import_from {
                masm.load_ptr(masm.address_at_vmctx(offset)?, scratch.writable())?;
                scratch.inner()
            } else {
                vmctx!(M)
            };

            let size_addr = masm.address_at_reg(base, heap_data.current_length_offset)?;
            masm.load_ptr(size_addr, writable!(size_reg))
        })?;
        Ok(())
    }

    /// Retrieves the size of the memory, pushing the result to the value stack.
    pub fn emit_compute_memory_size(&mut self, heap_data: &HeapData) -> Result<()> {