return &mips_mdebug_frame_unwind;
CORE_ADDR pc = frame_pc_unwind (next_frame); CORE_ADDR startaddr = 0; mips_extra_func_info_t proc_desc; int kernel_trap;    proc_desc = non_heuristic_proc_desc (pc, &startaddr); if (proc_desc == NULL) return NULL;   kernel_trap = PROC_REG_MASK (proc_desc) & 1; if (kernel_trap) return &mips_mdebug_frame_unwind;   if (!in_prologue (pc, PROC_LOW_ADDR (proc_desc))) return &mips_mdebug_frame_unwind;  return NULL;
mips_mdebug_frame_sniffer (struct frame_info *next_frame){  return &mips_mdebug_frame_unwind;}