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 */ 67