ARM: 6318/1: ftrace: fix and update dynamic ftrace
[linux-2.6.git] / arch / arm / include / asm / ftrace.h
1 #ifndef _ASM_ARM_FTRACE
2 #define _ASM_ARM_FTRACE
3
4 #ifdef CONFIG_FUNCTION_TRACER
5 #define MCOUNT_ADDR             ((unsigned long)(__gnu_mcount_nc))
6 #define MCOUNT_INSN_SIZE        4 /* sizeof mcount call */
7
8 #ifndef __ASSEMBLY__
9 extern void mcount(void);
10 extern void __gnu_mcount_nc(void);
11
12 #ifdef CONFIG_DYNAMIC_FTRACE
13 struct dyn_arch_ftrace {
14 #ifdef CONFIG_OLD_MCOUNT
15         bool    old_mcount;
16 #endif
17 };
18
19 static inline unsigned long ftrace_call_adjust(unsigned long addr)
20 {
21         return addr;
22 }
23
24 extern void ftrace_caller_old(void);
25 extern void ftrace_call_old(void);
26 #endif
27
28 #endif
29
30 #endif
31
32 #ifndef __ASSEMBLY__
33
34 #if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND)
35 /*
36  * return_address uses walk_stackframe to do it's work.  If both
37  * CONFIG_FRAME_POINTER=y and CONFIG_ARM_UNWIND=y walk_stackframe uses unwind
38  * information.  For this to work in the function tracer many functions would
39  * have to be marked with __notrace.  So for now just depend on
40  * !CONFIG_ARM_UNWIND.
41  */
42
43 void *return_address(unsigned int);
44
45 #else
46
47 extern inline void *return_address(unsigned int level)
48 {
49         return NULL;
50 }
51
52 #endif
53
54 #define HAVE_ARCH_CALLER_ADDR
55
56 #define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
57 #define CALLER_ADDR1 ((unsigned long)return_address(1))
58 #define CALLER_ADDR2 ((unsigned long)return_address(2))
59 #define CALLER_ADDR3 ((unsigned long)return_address(3))
60 #define CALLER_ADDR4 ((unsigned long)return_address(4))
61 #define CALLER_ADDR5 ((unsigned long)return_address(5))
62 #define CALLER_ADDR6 ((unsigned long)return_address(6))
63
64 #endif /* ifndef __ASSEMBLY__ */
65
66 #endif /* _ASM_ARM_FTRACE */