include/asm-sh/ptrace.h

   1 #ifndef __ASM_SH_PTRACE_H
   2 #define __ASM_SH_PTRACE_H
   3
   4 #include <asm/ubc.h>
   5
   6 /*
   7  * Copyright (C) 1999, 2000  Niibe Yutaka
   8  *
   9  */
  10
  11 /*
  12  * GCC defines register number like this:
  13  * -----------------------------
  14  *       0 - 15 are integer registers
  15  *      17 - 22 are control/special registers
  16  *      24 - 39 fp registers
  17  *      40 - 47 xd registers
  18  *      48 -    fpscr register
  19  * -----------------------------
  20  *
  21  * We follows above, except:
  22  *      16 --- program counter (PC)
  23  *      22 --- syscall #
  24  *      23 --- floating point communication register
  25  */
  26 #define REG_REG0         0
  27 #define REG_REG15       15
  28
  29 #define REG_PC          16
  30
  31 #define REG_PR          17
  32 #define REG_SR          18
  33 #define REG_GBR         19
  34 #define REG_MACH        20
  35 #define REG_MACL        21
  36
  37 #define REG_SYSCALL     22
  38
  39 #define REG_FPREG0      23
  40 #define REG_FPREG15     38
  41 #define REG_XFREG0      39
  42 #define REG_XFREG15     54
  43
  44 #define REG_FPSCR       55
  45 #define REG_FPUL        56
  46
  47 /* options set using PTRACE_SETOPTIONS */
  48 #define PTRACE_O_TRACESYSGOOD     0x00000001
  49
  50 /*
  51  * This struct defines the way the registers are stored on the
  52  * kernel stack during a system call or other kernel entry.
  53  */
  54 struct pt_regs {
  55         unsigned long regs[16];
  56         unsigned long pc;
  57         unsigned long pr;
  58         unsigned long sr;
  59         unsigned long gbr;
  60         unsigned long mach;
  61         unsigned long macl;
  62         long tra;
  63 };
  64
  65 /*
  66  * This struct defines the way the DSP registers are stored on the
  67  * kernel stack during a system call or other kernel entry.
  68  */
  69 struct pt_dspregs {
  70         unsigned long   a1;
  71         unsigned long   a0g;
  72         unsigned long   a1g;
  73         unsigned long   m0;
  74         unsigned long   m1;
  75         unsigned long   a0;
  76         unsigned long   x0;
  77         unsigned long   x1;
  78         unsigned long   y0;
  79         unsigned long   y1;
  80         unsigned long   dsr;
  81         unsigned long   rs;
  82         unsigned long   re;
  83         unsigned long   mod;
  84 };
  85
  86 #define PTRACE_GETDSPREGS       55
  87 #define PTRACE_SETDSPREGS       56
  88
  89 #ifdef __KERNEL__
  90 #define user_mode(regs) (((regs)->sr & 0x40000000)==0)
  91 #define instruction_pointer(regs) ((regs)->pc)
  92 extern void show_regs(struct pt_regs *);
  93
  94 #ifdef CONFIG_SH_DSP
  95 #define task_pt_regs(task) \
  96         ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
  97                  - sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1)
  98 #else
  99 #define task_pt_regs(task) \
 100         ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
 101                  - sizeof(unsigned long)) - 1)
 102 #endif
 103
 104 static inline unsigned long profile_pc(struct pt_regs *regs)
 105 {
 106         unsigned long pc = instruction_pointer(regs);
 107
 108         if (pc >= 0xa0000000UL && pc < 0xc0000000UL)
 109                 pc -= 0x20000000;
 110         return pc;
 111 }
 112 #endif
 113
 114 #endif /* __ASM_SH_PTRACE_H */