Plugin query - Link to last page of paginations from anywhere?

I’m seeking a functionality that creates a link to the last page of weblog:entries paginations for the following scenario:

{if page_next}
pagination link
{if:else}
go onto another section entirely, page 1
{/if}

But in going backwards, we don’t have the luxury of having such a smooth transition - as we page back from the “another section entirely” we have

{if page_previous}
pagination link
{if:else}
a link that goes back to page 1 of the last section, but we don't want that. we want a link that goes pack to the last paginated page of that section
{/if}

Anyone know any secrets to this? Plugins? Thanks in advance!

CCB