include/linux/ftrace_regs.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_FTRACE_REGS_H
   3 #define _LINUX_FTRACE_REGS_H
   4
   5 /*
   6  * For archs that just copy pt_regs in ftrace regs, it can use this default.
   7  * If an architecture does not use pt_regs, it must define all the below
   8  * accessor functions.
   9  */
  10 #ifndef HAVE_ARCH_FTRACE_REGS
  11 struct __arch_ftrace_regs {
  12         struct pt_regs          regs;
  13 };
  14
  15 #define arch_ftrace_regs(fregs) ((struct __arch_ftrace_regs *)(fregs))
  16
  17 struct ftrace_regs;
  18
  19 #define ftrace_regs_get_instruction_pointer(fregs) \
  20         instruction_pointer(&arch_ftrace_regs(fregs)->regs)
  21 #define ftrace_regs_get_argument(fregs, n) \
  22         regs_get_kernel_argument(&arch_ftrace_regs(fregs)->regs, n)
  23 #define ftrace_regs_get_stack_pointer(fregs) \
  24         kernel_stack_pointer(&arch_ftrace_regs(fregs)->regs)
  25 #define ftrace_regs_get_return_value(fregs) \
  26         regs_return_value(&arch_ftrace_regs(fregs)->regs)
  27 #define ftrace_regs_set_return_value(fregs, ret) \
  28         regs_set_return_value(&arch_ftrace_regs(fregs)->regs, ret)
  29 #define ftrace_override_function_with_return(fregs) \
  30         override_function_with_return(&arch_ftrace_regs(fregs)->regs)
  31 #define ftrace_regs_query_register_offset(name) \
  32         regs_query_register_offset(name)
  33
  34 #endif /* HAVE_ARCH_FTRACE_REGS */
  35
  36 #endif /* _LINUX_FTRACE_REGS_H */