32 	if (unlikely(atomic_read(&current->tracing_graph_pause)))  in prepare_ftrace_return()
45 			"4:	brid	3b;"			\  in prepare_ftrace_return()
49 			"	.word	1b,4b;"			\  in prepare_ftrace_return()
50 			"	.word	2b,4b;"			\  in prepare_ftrace_return()
71 /* save value to addr - it is save to do it in asm */
80 				"3:	brid	2b;"			\  in ftrace_modify_code()
84 				"	.word	1b,3b;"			\  in ftrace_modify_code()
91 		return -EFAULT;  in ftrace_modify_code()
105 /* There are two approaches howto solve ftrace_make nop function - look below */
112 int ftrace_make_nop(struct module *mod,  in ftrace_make_nop()  argument
116 	 * b000c000        imm     -16384  in ftrace_make_nop()
117 	 * b9fc8e30        bralid  r15, -29136     // c0008e30 <_mcount>  in ftrace_make_nop()
120 	 * The first solution (!USE_FTRACE_NOP-could be called branch solution)  in ftrace_make_nop()
121 	 * b000c000        bri	12 (0xC - jump to any other instruction)  in ftrace_make_nop()
122 	 * b9fc8e30        bralid  r15, -29136     // c0008e30 <_mcount>  in ftrace_make_nop()
126 	 * The second solution (USE_FTRACE_NOP) - no jump just nops  in ftrace_make_nop()
135 		imm = *(unsigned int *)rec->ip;  in ftrace_make_nop()
138 		bralid = *(unsigned int *)(rec->ip + 4);  in ftrace_make_nop()
144 	ret = ftrace_modify_code(rec->ip, MICROBLAZE_NOP);  in ftrace_make_nop()
145 	ret += ftrace_modify_code(rec->ip + 4, MICROBLAZE_NOP);  in ftrace_make_nop()
147 	ret = ftrace_modify_code(rec->ip, MICROBLAZE_BRI);  in ftrace_make_nop()
156 	pr_debug("%s: addr:0x%x, rec->ip: 0x%x, imm:0x%x\n",  in ftrace_make_call()
157 		__func__, (unsigned int)addr, (unsigned int)rec->ip, imm);  in ftrace_make_call()
158 	ret = ftrace_modify_code(rec->ip, imm);  in ftrace_make_call()
161 	ret += ftrace_modify_code(rec->ip + 4, bralid);  in ftrace_make_call()