Software watchpoint problems

[Ulrich Weigand]

Several testcases related to GDB software watchpoint handling currently fail:
FAIL: gdb.base/pr11022.exp: set watchpoint
FAIL: gdb.base/pr11022.exp: watchpoint hit
FAIL: gdb.base/pr11022.exp: watchpoint hit 2
FAIL: gdb.base/recurse.exp: continue to second instance watchpoint, second time
FAIL: gdb.base/recurse.exp: second instance watchpoint deleted when leaving scope (the program exited)
FAIL: gdb.base/recurse.exp: continue to first instance watchpoint, second time (the program is no longer running)
FAIL: gdb.base/recurse.exp: first instance watchpoint deleted when leaving scope (the program is no longer running)
FAIL: gdb.base/watch-cond.exp: watchpoint with local expression, local condition evaluates in correct frame
FAIL: gdb.mi/mi-watch.exp: hw: watchpoint trigger (stopped at wrong place)
FAIL: gdb.mi/mi2-watch.exp: hw: watchpoint trigger (stopped at wrong place)

This seems related to problems properly detecting function epilogues.

[Ulrich Weigand (uweigand)]

Mainline patch posted here:
http://sourceware.org/ml/gdb-patches/2010-09/msg00376.html

[Ulrich Weigand (uweigand)]

Updated patch posted here:
http://sourceware.org/ml/gdb-patches/2010-10/msg00123.html
and committed to mainline