44 static inline bool IsValidFrame(uptr frame, uptr stack_top, uptr stack_bottom) {  in IsValidFrame()  argument
45   return frame > stack_bottom && frame < stack_top - 2 * sizeof (uhwptr);  in IsValidFrame()
52                                       uptr stack_top,  in GetCanonicFrame()  argument
55   if (!IsValidFrame(bp, stack_top, stack_bottom)) return 0;  in GetCanonicFrame()
57   if (IsValidFrame((uptr)bp_prev[0], stack_top, stack_bottom)) return bp_prev;  in GetCanonicFrame()
60   if (IsValidFrame((uptr)bp_prev[-1], stack_top, stack_bottom))  in GetCanonicFrame()
72 void BufferedStackTrace::FastUnwindStack(uptr pc, uptr bp, uptr stack_top,  in FastUnwindStack()  argument
77   if (stack_top < 4096) return;  // Sanity check for stack top.  in FastUnwindStack()
78   uhwptr *frame = GetCanonicFrame(bp, stack_top, stack_bottom);  in FastUnwindStack()
83   while (IsValidFrame((uptr)frame, stack_top, bottom) &&  in FastUnwindStack()
91     if (!IsValidFrame((uptr)caller_frame, stack_top, bottom) ||  in FastUnwindStack()
102     frame = GetCanonicFrame((uptr)frame[0], stack_top, bottom);  in FastUnwindStack()