31 static inline int is_ra_save_ins(union mips_instruction *ip)  in is_ra_save_ins()  argument
34 	return (ip->i_format.opcode == sw_op || ip->i_format.opcode == sd_op)  in is_ra_save_ins()
35 		&& ip->i_format.rs == 29 && ip->i_format.rt == 31;  in is_ra_save_ins()
38 static inline int is_sp_move_ins(union mips_instruction *ip)  in is_sp_move_ins()  argument
41 	if (ip->i_format.rs != 29 || ip->i_format.rt != 29)  in is_sp_move_ins()
43 	if (ip->i_format.opcode == addiu_op || ip->i_format.opcode == daddiu_op)  in is_sp_move_ins()
52 static inline int is_end_of_function_marker(union mips_instruction *ip)  in is_end_of_function_marker()  argument
55 	if (ip->r_format.func == jr_op && ip->r_format.rs == 31)  in is_end_of_function_marker()
58 	if (ip->i_format.opcode == lui_op && ip->i_format.rt == 28)  in is_end_of_function_marker()
84 		union mips_instruction ip;  in unwind_user_frame()  local
86 		if (get_mem(addr, (unsigned long *) &ip))  in unwind_user_frame()
89 		if (is_sp_move_ins(&ip)) {  in unwind_user_frame()
90 			int stack_adjustment = ip.i_format.simmediate;  in unwind_user_frame()
96 		} else if (is_ra_save_ins(&ip)) {  in unwind_user_frame()
97 			int ra_slot = ip.i_format.simmediate;  in unwind_user_frame()
102 		} else if (is_end_of_function_marker(&ip))  in unwind_user_frame()