1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_SH_FTRACE_H
3 #define __ASM_SH_FTRACE_H
4
5 #ifdef CONFIG_FUNCTION_TRACER
6
7 #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
8 #define FTRACE_SYSCALL_MAX NR_syscalls
9
10 #ifndef __ASSEMBLY__
11 extern void mcount(void);
12
13 #define MCOUNT_ADDR ((unsigned long)(mcount))
14
15 #ifdef CONFIG_DYNAMIC_FTRACE
16 #define CALL_ADDR ((long)(ftrace_call))
17 #define STUB_ADDR ((long)(ftrace_stub))
18 #define GRAPH_ADDR ((long)(ftrace_graph_call))
19 #define CALLER_ADDR ((long)(ftrace_caller))
20
21 #define MCOUNT_INSN_OFFSET ((STUB_ADDR - CALL_ADDR) - 4)
22 #define GRAPH_INSN_OFFSET ((CALLER_ADDR - GRAPH_ADDR) - 4)
23
24 struct dyn_arch_ftrace {
25 /* No extra data needed on sh */
26 };
27
28 #endif /* CONFIG_DYNAMIC_FTRACE */
29
30 static inline unsigned long ftrace_call_adjust(unsigned long addr)
31 {
32 /* 'addr' is the memory table address. */
33 return addr;
34 }
35
36 void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr);
37
38 #endif /* __ASSEMBLY__ */
39 #endif /* CONFIG_FUNCTION_TRACER */
40
41 #ifndef __ASSEMBLY__
42
43 /* arch/sh/kernel/return_address.c */
44 extern void *return_address(unsigned int);
45
46 #define ftrace_return_address(n) return_address(n)
47
48 #ifdef CONFIG_DYNAMIC_FTRACE
49 extern void arch_ftrace_nmi_enter(void);
50 extern void arch_ftrace_nmi_exit(void);
51 #else
52 static inline void arch_ftrace_nmi_enter(void) { }
53 static inline void arch_ftrace_nmi_exit(void) { }
54 #endif
55
56 #endif /* __ASSEMBLY__ */
57
58 #endif /* __ASM_SH_FTRACE_H */
59
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