77 bool xtensa_backtrace_get_next_frame(struct xtensa_backtrace_frame_t *frame)  in xtensa_backtrace_get_next_frame()  argument
80 	 * frame pointer.  in xtensa_backtrace_get_next_frame()
82 	if (xtensa_is_outside_stack_bounds((uintptr_t)frame->sp, 0, UINT32_MAX)) {  in xtensa_backtrace_get_next_frame()
86 	/* Use frame(i-1)'s BS area located below frame(i)'s  in xtensa_backtrace_get_next_frame()
87 	 * sp to get frame(i-1)'s sp and frame(i-2)'s pc  in xtensa_backtrace_get_next_frame()
91 	char *base_save = (char *)frame->sp;  in xtensa_backtrace_get_next_frame()
93 	frame->pc = frame->next_pc;  in xtensa_backtrace_get_next_frame()
94 	/* If next_pc = 0, indicates frame(i-1) is the last  in xtensa_backtrace_get_next_frame()
95 	 * frame on the stack  in xtensa_backtrace_get_next_frame()
97 	frame->next_pc = *((uint32_t *)(base_save - 16));  in xtensa_backtrace_get_next_frame()
98 	frame->sp =  *((uint32_t *)(base_save - 12));  in xtensa_backtrace_get_next_frame()
100 	/* Return true if both sp and pc of frame(i-1) are sane,  in xtensa_backtrace_get_next_frame()
103 	return (xtensa_stack_ptr_is_sane(frame->sp) &&  in xtensa_backtrace_get_next_frame()
105 				xtensa_cpu_process_stack_pc(frame->pc)));  in xtensa_backtrace_get_next_frame()
115 	_xtensa_irq_stack_frame_raw_t *frame = (void *)interrupted_stack;  in xtensa_backtrace_print()  local
119 	 * any frame elements obtained via de-referencing the  in xtensa_backtrace_print()
120 	 * frame pointer are probably also invalid. Or worse,  in xtensa_backtrace_print()
123 	if (!xtensa_is_frame_pointer_valid(frame)) {  in xtensa_backtrace_print()
127 	bsa = frame->ptr_to_bsa;  in xtensa_backtrace_print()
130 	/* Initialize stk_frame with first frame of stack */  in xtensa_backtrace_print()
144 	/* Check if first frame is valid */  in xtensa_backtrace_print()
152 		/* Get previous stack frame */  in xtensa_backtrace_print()