Function getVirtualBounds

src/e9patch/e9mapping.cpp:723–750

    bounds.push_back({lb, ub});
}
void getVirtualBounds(const Mapping *mapping, size_t granularity,
    std::vector<Bounds> &bounds)
{
    intptr_t lb = INTPTR_MAX, ub = INTPTR_MIN;
    const size_t   SIZE = mapping->size;
    const intptr_t BASE = mapping->base;
    const intptr_t END  = BASE + SIZE;
    auto iend = Allocator::end();
    for (auto i = mapping->i; i != iend; ++i)
    {
        const Alloc *a = *i;
        if (a->lb >= END)
            break;
        if (a->bytes == nullptr)
        {
            // Reserved memory.  We must split into two separate mappings.
            pushBounds(lb, ub, granularity, bounds);
            lb = INTPTR_MAX;
            ub = INTPTR_MIN;
            continue;
        }
        intptr_t lb1 = (a->lb < BASE? 0: a->lb - BASE);
        intptr_t ub1 = (a->ub > END ? END - BASE: a->ub - BASE);
        lb = std::min(lb, lb1);
        ub = std::max(ub, ub1);
    }
    pushBounds(lb, ub, granularity, bounds);
}