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* alpha-osf1-tdep.c (alpha_osf1_init_abi): Unfortunately,

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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().
This commit is contained in:
Joel Brobecker
2002-08-17 06:12:52 +00:00
parent 238617f678
commit c8edd8b484
4 changed files with 43 additions and 6 deletions
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4
gdb/alpha-osf1-tdep.c
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@@ -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;