tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_ARM_FTRACE
2#define _ASM_ARM_FTRACE
3
4#ifdef CONFIG_FUNCTION_TRACER
5#define MCOUNT_ADDR ((long)(mcount))
6#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
7
8#ifndef __ASSEMBLY__
9extern void mcount(void);
10extern void __gnu_mcount_nc(void);
11#endif
12
13#endif
14
15#ifndef __ASSEMBLY__
16
17#if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND)
18/*
19 * return_address uses walk_stackframe to do it's work. If both
20 * CONFIG_FRAME_POINTER=y and CONFIG_ARM_UNWIND=y walk_stackframe uses unwind
21 * information. For this to work in the function tracer many functions would
22 * have to be marked with __notrace. So for now just depend on
23 * !CONFIG_ARM_UNWIND.
24 */
25
26void *return_address(unsigned int);
27
28#else
29
30extern inline void *return_address(unsigned int level)
31{
32 return NULL;
33}
34
35#endif
36
37#define HAVE_ARCH_CALLER_ADDR
38
39#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
40#define CALLER_ADDR1 ((unsigned long)return_address(1))
41#define CALLER_ADDR2 ((unsigned long)return_address(2))
42#define CALLER_ADDR3 ((unsigned long)return_address(3))
43#define CALLER_ADDR4 ((unsigned long)return_address(4))
44#define CALLER_ADDR5 ((unsigned long)return_address(5))
45#define CALLER_ADDR6 ((unsigned long)return_address(6))
46
47#endif /* ifndef __ASSEMBLY__ */
48
49#endif /* _ASM_ARM_FTRACE */