lr_register.
(rs6000_in_function_epilogue_p): Check for bctr.
(skip_prologue): Initialize lr_register. Set lr_reg to a register
number. Set gpr_mask and used_bl. Continue scanning while some
expected registers are not saved. Set lr_register if LR is not
stored.
(rs6000_frame_cache): Handle gpr_mask and lr_register.
* gdb.arch/powerpc-prologue.exp: Correct saved registers.
(rs6000_in_function_epilogue_p): Use extract_unsigned_integer.
(refine_prologue_limit): Delete.
(skip_prologue): Don't call it. Use extract_unsigned_integer.
Assume lim_pc is set. Correct check for incomplete prologues.
Do not skip clobbers of the frame pointer.
* symtab.c (skip_prologue_using_sal): Fail if there is only one
sal.
* gdb.arch/powerpc-prologue.c (optimized_1_marker, gdb2029_marker)
(optimized_1): New.
(main): Call optimized_1.
(gdb2029): Correct typos. Call gdb2029_marker.
* gdb.arch/powerpc-prologue.exp: Run new test. Use a breakpoint
for gdb2029.
