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__
  11 extern 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
  24 struct dyn_arch_ftrace {
  25         /* No extra data needed on sh */
  26 };
  27
  28 #endif /* CONFIG_DYNAMIC_FTRACE */
  29
  30 static inline unsigned long ftrace_call_adjust(unsigned long addr)
  31 {
  32         /* 'addr' is the memory table address. */
  33         return addr;
  34 }
  35
  36 void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr);
  37
  38 #endif /* __ASSEMBLY__ */
  39 #endif /* CONFIG_FUNCTION_TRACER */
  40
  41 #ifndef __ASSEMBLY__
  42
  43 /* arch/sh/kernel/return_address.c */
  44 extern void *return_address(unsigned int);
  45
  46 #define ftrace_return_address(n) return_address(n)
  47
  48 #ifdef CONFIG_DYNAMIC_FTRACE
  49 extern void arch_ftrace_nmi_enter(void);
  50 extern void arch_ftrace_nmi_exit(void);
  51 #else
  52 static inline void arch_ftrace_nmi_enter(void) { }
  53 static inline void arch_ftrace_nmi_exit(void) { }
  54 #endif
  55
  56 #endif /* __ASSEMBLY__ */
  57
  58 #endif /* __ASM_SH_FTRACE_H */