Prologue analysis interface

[Jim Blandy]

On 1/27/06, Daniel Jacobowitz <drow@false.org> wrote:
> I'm assuming you haven't had any time for this since we last talked
> about it.  If that's true, how do you feel about reposting the current
> version of the code for review anyway?

Yes, I haven't had time for it.  I'll re-post.

> I just needed to fix a prologue analysis bug for Thumb.  It took me
> about six hours to rewrite the prologue analyzer from scratch based
> on prologue-value.[ch], and it has equivalent testsuite results to
> the DWARF-2 unwinder; one more pass than the existing unwinder with
> DWARF-2 disabled; and handles the somewhat odd case that I was trying
> to fix without impairing anything else.  It's an obvious step forwards.

Yay! :)