LXR linux/arch/sh/include/asm/ftrace.h

   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__
  11extern 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
  24struct dyn_arch_ftrace {
  25        /* No extra data needed on sh */
  26};
  27
  28#endif /* CONFIG_DYNAMIC_FTRACE */
  29
  30static inline unsigned long ftrace_call_adjust(unsigned long addr)
  31{
  32        /* 'addr' is the memory table address. */
  33        return addr;
  34}
  35
  36#endif /* __ASSEMBLY__ */
  37#endif /* CONFIG_FUNCTION_TRACER */
  38
  39#ifndef __ASSEMBLY__
  40
  41/* arch/sh/kernel/return_address.c */
  42extern void *return_address(unsigned int);
  43
  44#define ftrace_return_address(n) return_address(n)
  45
  46#endif /* __ASSEMBLY__ */
  47
  48#endif /* __ASM_SH_FTRACE_H */
  49