Function mem_span

host/sysenv/sysenv.cpp:75–83

}

std::span<byte_t> mem_span(Stack& stack, i64_t ptr, i64_t len) {
    MemInst& mem = get_mem(stack, ptr);
    size_t off = (size_t)((uint64_t)ptr & PTR_OFF_MASK);
    size_t end = off + (size_t)len;
    if(end > mem.data.size()) {
        throw std::out_of_range("sysenv: memory access out of bounds");
    }
    return std::span<byte_t>(mem.data.data() + off, (size_t)len);
}

std::string mem_string(Stack& stack, i64_t ptr, i64_t len) {
    auto sp = mem_span(stack, ptr, len);