diff options
Diffstat (limited to 'gdb/ppc-linux-nat.c')
| -rw-r--r-- | gdb/ppc-linux-nat.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gdb/ppc-linux-nat.c b/gdb/ppc-linux-nat.c index edb16c0..280dcbe 100644 --- a/gdb/ppc-linux-nat.c +++ b/gdb/ppc-linux-nat.c @@ -2178,7 +2178,18 @@ ppc_linux_new_thread (struct lwp_info *lp) /* Copy that thread's breakpoints and watchpoints to the new thread. */ for (i = 0; i < max_slots_number; i++) if (hw_breaks[i].hw_break) - booke_insert_point (hw_breaks[i].hw_break, tid); + { + /* Older kernels did not make new threads inherit their parent + thread's debug state, so we always clear the slot and replicate + the debug state ourselves, ensuring compatibility with all + kernels. */ + + /* The ppc debug resource accounting is done through "slots". + Ask the kernel the deallocate this specific *point's slot. */ + ptrace (PPC_PTRACE_DELHWDEBUG, tid, 0, hw_breaks[i].slot); + + booke_insert_point (hw_breaks[i].hw_break, tid); + } } else ptrace (PTRACE_SET_DEBUGREG, tid, 0, saved_dabr_value); |