include/asm-generic/ptrace.h

   1 /*
   2  * Common low level (register) ptrace helpers
   3  *
   4  * Copyright 2004-2011 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #ifndef __ASM_GENERIC_PTRACE_H__
  10 #define __ASM_GENERIC_PTRACE_H__
  11
  12 #ifndef __ASSEMBLY__
  13
  14 /* Helpers for working with the instruction pointer */
  15 #ifndef GET_IP
  16 #define GET_IP(regs) ((regs)->pc)
  17 #endif
  18 #ifndef SET_IP
  19 #define SET_IP(regs, val) (GET_IP(regs) = (val))
  20 #endif
  21
  22 static inline unsigned long instruction_pointer(struct pt_regs *regs)
  23 {
  24         return GET_IP(regs);
  25 }
  26 static inline void instruction_pointer_set(struct pt_regs *regs,
  27                                            unsigned long val)
  28 {
  29         SET_IP(regs, val);
  30 }
  31
  32 #ifndef profile_pc
  33 #define profile_pc(regs) instruction_pointer(regs)
  34 #endif
  35
  36 /* Helpers for working with the user stack pointer */
  37 #ifndef GET_USP
  38 #define GET_USP(regs) ((regs)->usp)
  39 #endif
  40 #ifndef SET_USP
  41 #define SET_USP(regs, val) (GET_USP(regs) = (val))
  42 #endif
  43
  44 static inline unsigned long user_stack_pointer(struct pt_regs *regs)
  45 {
  46         return GET_USP(regs);
  47 }
  48 static inline void user_stack_pointer_set(struct pt_regs *regs,
  49                                           unsigned long val)
  50 {
  51         SET_USP(regs, val);
  52 }
  53
  54 /* Helpers for working with the frame pointer */
  55 #ifndef GET_FP
  56 #define GET_FP(regs) ((regs)->fp)
  57 #endif
  58 #ifndef SET_FP
  59 #define SET_FP(regs, val) (GET_FP(regs) = (val))
  60 #endif
  61
  62 static inline unsigned long frame_pointer(struct pt_regs *regs)
  63 {
  64         return GET_FP(regs);
  65 }
  66 static inline void frame_pointer_set(struct pt_regs *regs,
  67                                      unsigned long val)
  68 {
  69         SET_FP(regs, val);
  70 }
  71
  72 #endif /* __ASSEMBLY__ */
  73
  74 #endif