mips/kernel/ftrace.c

40 #define JAL 0x0c000000		/* jump & link: ip --> ra, jump to target */
41 #define ADDR_MASK 0x03ffffff	/*  op_code|addr : 31...26|25 ....0 */
44 #define INSN_NOP 0x00000000	/* nop */
59 	buf = (u32 *)&insn_la_mcount[0];  in ftrace_dyn_arch_init_insns()
85 	return 0;  in ftrace_modify_code()
106 	return 0;  in ftrace_modify_code_2()
126 	return 0;  in ftrace_modify_code_2r()
143  * lui v1, hi_16bit_of_mcount	     --> b 1f (0x10000005)
152  * lui v1, hi_16bit_of_mcount	     --> b 1f (0x10000004)
160 #define INSN_B_1F (0x10000000 | MCOUNT_OFFSET_INSNS)
192 	new = core_kernel_text(ip) ? insn_jal_ftrace_caller : insn_la_mcount[0];  in ftrace_make_call()
221 	return 0;  in ftrace_dyn_arch_init()
247 #define S_RA_SP (0xafbf << 16)	/* s{d,w} ra, offset(sp) */
248 #define S_R_SP	(0xafb0 << 16)	/* s{d,w} R, offset(sp) */
249 #define OFFSET_MASK	0xffff	/* stack offset range: 0 ~ PT_SIZE */
274 			return 0;  in ftrace_get_parent_ra_addr()
292 		return 0;  in ftrace_get_parent_ra_addr()
296 	return 0;  in ftrace_get_parent_ra_addr()