GDB_REG_LR
case GDB_REG_LR:
case GDB_REG_LR: return (&kdb_frame->tf_lr);
case GDB_REG_LR: return (&kdb_thrctx->pcb_x[PCB_LR]);
case GDB_REG_LR: kdb_thrctx->pcb_x[PCB_LR] = regval; break;