Hi,

This patch fixes bug #5907. The SteppingEngine didn't make a difference
between instruction stepping and line stepping and always tried to skip
plt entries and the dynamic loader. That is really annoying if you are
investigating issues with plt entries or the dynamic loader like I was
for the last couple of weeks :)

The InstructionStepState now keeps track of whether it is instruction or
line stepping. Only with line stepping does it try to do any magic. I
adjusted one test that assumed stepping would always end inside the plt
entry, this is now never true, except if you explicitly do step
--instruction of course.

frysk-core/frysk/stepping/ChangeLog
2008-03-19  Mark Wielaard  <mwielaard@redhat.com>

   * InstructionStepState.java (InstructionStepState): Take and set
   isLine argument.
   (handleUpdate): Only try skipping plt when line stepping.
   * LineStepState.java (handleUpdate): When no line info found act
   like an InstructionStepState.
   * SteppingEngine.java (stepInstruction): Create InstructionStepState
   for instruction stepping.
   (stepInstruction): Likewise.
   (stepLine): Create InstructionStepState for line stepping.
   (setUp): Create InstructionStepState using isLine.
   * TestStepping.java (testInstructionStepThroughSection): Just do one
   line step.

No regressions (fedora 8 - x86/x86_64).

Committed and pushed,

Mark