72dc43a9eb
Handle the different nop and call instructions for Thumb-2. Also, we need to adjust the recorded mcount_loc addresses because they have the lsb set. Cc: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> [recordmcount.pl change] Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
#ifndef _ASM_ARM_FTRACE
|
|
#define _ASM_ARM_FTRACE
|
|
|
|
#ifdef CONFIG_FUNCTION_TRACER
|
|
#define MCOUNT_ADDR ((unsigned long)(__gnu_mcount_nc))
|
|
#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
|
|
|
|
#ifndef __ASSEMBLY__
|
|
extern void mcount(void);
|
|
extern void __gnu_mcount_nc(void);
|
|
|
|
#ifdef CONFIG_DYNAMIC_FTRACE
|
|
struct dyn_arch_ftrace {
|
|
#ifdef CONFIG_OLD_MCOUNT
|
|
bool old_mcount;
|
|
#endif
|
|
};
|
|
|
|
static inline unsigned long ftrace_call_adjust(unsigned long addr)
|
|
{
|
|
/* With Thumb-2, the recorded addresses have the lsb set */
|
|
return addr & ~1;
|
|
}
|
|
|
|
extern void ftrace_caller_old(void);
|
|
extern void ftrace_call_old(void);
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND)
|
|
/*
|
|
* return_address uses walk_stackframe to do it's work. If both
|
|
* CONFIG_FRAME_POINTER=y and CONFIG_ARM_UNWIND=y walk_stackframe uses unwind
|
|
* information. For this to work in the function tracer many functions would
|
|
* have to be marked with __notrace. So for now just depend on
|
|
* !CONFIG_ARM_UNWIND.
|
|
*/
|
|
|
|
void *return_address(unsigned int);
|
|
|
|
#else
|
|
|
|
extern inline void *return_address(unsigned int level)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
#endif
|
|
|
|
#define HAVE_ARCH_CALLER_ADDR
|
|
|
|
#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
|
|
#define CALLER_ADDR1 ((unsigned long)return_address(1))
|
|
#define CALLER_ADDR2 ((unsigned long)return_address(2))
|
|
#define CALLER_ADDR3 ((unsigned long)return_address(3))
|
|
#define CALLER_ADDR4 ((unsigned long)return_address(4))
|
|
#define CALLER_ADDR5 ((unsigned long)return_address(5))
|
|
#define CALLER_ADDR6 ((unsigned long)return_address(6))
|
|
|
|
#endif /* ifndef __ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_ARM_FTRACE */
|