From c8edd8b484eaa59ae60a2b3c89f5772b98aefad1 Mon Sep 17 00:00:00 2001 From: Joel Brobecker Date: Sat, 17 Aug 2002 06:12:52 +0000 Subject: * alpha-osf1-tdep.c (alpha_osf1_init_abi): Unfortunately, procfs appears to be broken when debugging on multi-processor machines. So enable software single stepping in order to avoid using the procfs interface to do next/step operations, using internal breakpoints instead. * infrun.c (handle_inferior_event): Readjust the stop_pc by DECR_PC_AFTER_BREAK when hitting a single step breakpoint, to make this pc address equal to the value it would have if the system stepping capability was used. Also set a new flag used to ensure that we don't readjust the PC one more time later. * breakpoint.c (bpstat_stop_status): Do not adjust the PC address by DECR_PC_AFTER_BREAK when software single step is in use for this architecture, as this has already been taken care of in handle_inferior_event(). --- gdb/alpha-osf1-tdep.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'gdb/alpha-osf1-tdep.c') diff --git a/gdb/alpha-osf1-tdep.c b/gdb/alpha-osf1-tdep.c index 1232051..ece5e26 100644 --- a/gdb/alpha-osf1-tdep.c +++ b/gdb/alpha-osf1-tdep.c @@ -58,6 +58,10 @@ alpha_osf1_init_abi (struct gdbarch_info info, struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); set_gdbarch_pc_in_sigtramp (gdbarch, alpha_osf1_pc_in_sigtramp); + /* The next/step support via procfs on OSF1 is broken when running + on multi-processor machines. We need to use software single stepping + instead. */ + set_gdbarch_software_single_step (gdbarch, alpha_software_single_step); tdep->skip_sigtramp_frame = alpha_osf1_skip_sigtramp_frame; tdep->sigcontext_addr = alpha_osf1_sigcontext_addr; -- cgit v1.1