diff options
Diffstat (limited to 'gdb/infrun.c')
| -rw-r--r-- | gdb/infrun.c | 38 |
1 files changed, 35 insertions, 3 deletions
diff --git a/gdb/infrun.c b/gdb/infrun.c index 9f6cfc9..72ef8ee 100644 --- a/gdb/infrun.c +++ b/gdb/infrun.c @@ -3776,9 +3776,8 @@ infrun: not switching back to stepped thread, it has vanished\n"); previous frame must have valid frame IDs. */ if (!frame_id_eq (get_stack_frame_id (frame), ecs->event_thread->step_stack_frame_id) - && (frame_id_eq (frame_unwind_caller_id (frame), - ecs->event_thread->step_stack_frame_id) - || execution_direction == EXEC_REVERSE)) + && frame_id_eq (frame_unwind_caller_id (frame), + ecs->event_thread->step_stack_frame_id)) { CORE_ADDR real_stop_pc; @@ -3806,6 +3805,7 @@ infrun: not switching back to stepped thread, it has vanished\n"); /* Reverse stepping through solib trampolines. */ if (execution_direction == EXEC_REVERSE + && ecs->event_thread->step_over_calls != STEP_OVER_NONE && (gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc) || (ecs->stop_func_start == 0 && in_solib_dynsym_resolve_code (stop_pc)))) @@ -3923,6 +3923,38 @@ infrun: not switching back to stepped thread, it has vanished\n"); return; } + /* Reverse stepping through solib trampolines. */ + + if (execution_direction == EXEC_REVERSE + && ecs->event_thread->step_over_calls != STEP_OVER_NONE) + { + if (gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc) + || (ecs->stop_func_start == 0 + && in_solib_dynsym_resolve_code (stop_pc))) + { + /* Any solib trampoline code can be handled in reverse + by simply continuing to single-step. We have already + executed the solib function (backwards), and a few + steps will take us back through the trampoline to the + caller. */ + keep_going (ecs); + return; + } + else if (in_solib_dynsym_resolve_code (stop_pc)) + { + /* Stepped backward into the solib dynsym resolver. + Set a breakpoint at its start and continue, then + one more step will take us out. */ + struct symtab_and_line sr_sal; + init_sal (&sr_sal); + sr_sal.pc = ecs->stop_func_start; + insert_step_resume_breakpoint_at_sal (gdbarch, + sr_sal, null_frame_id); + keep_going (ecs); + return; + } + } + /* If we're in the return path from a shared library trampoline, we want to proceed through the trampoline when stepping. */ if (gdbarch_in_solib_return_trampoline (gdbarch, |