arch/parisc/include/asm/ptrace.h

   1 #ifndef _PARISC_PTRACE_H
   2 #define _PARISC_PTRACE_H
   3
   4 /* written by Philipp Rumpf, Copyright (C) 1999 SuSE GmbH Nuernberg
   5 ** Copyright (C) 2000 Grant Grundler, Hewlett-Packard
   6 */
   7
   8 #include <linux/types.h>
   9
  10 /* This struct defines the way the registers are stored on the
  11  * stack during a system call.
  12  *
  13  * N.B. gdb/strace care about the size and offsets within this
  14  * structure. If you change things, you may break object compatibility
  15  * for those applications.
  16  */
  17
  18 struct pt_regs {
  19         unsigned long gr[32];   /* PSW is in gr[0] */
  20         __u64 fr[32];
  21         unsigned long sr[ 8];
  22         unsigned long iasq[2];
  23         unsigned long iaoq[2];
  24         unsigned long cr27;
  25         unsigned long pad0;     /* available for other uses */
  26         unsigned long orig_r28;
  27         unsigned long ksp;
  28         unsigned long kpc;
  29         unsigned long sar;      /* CR11 */
  30         unsigned long iir;      /* CR19 */
  31         unsigned long isr;      /* CR20 */
  32         unsigned long ior;      /* CR21 */
  33         unsigned long ipsw;     /* CR22 */
  34 };
  35
  36 /*
  37  * The numbers chosen here are somewhat arbitrary but absolutely MUST
  38  * not overlap with any of the number assigned in <linux/ptrace.h>.
  39  *
  40  * These ones are taken from IA-64 on the assumption that theirs are
  41  * the most correct (and we also want to support PTRACE_SINGLEBLOCK
  42  * since we have taken branch traps too)
  43  */
  44 #define PTRACE_SINGLEBLOCK      12      /* resume execution until next branch */
  45
  46 #ifdef __KERNEL__
  47
  48 #define task_regs(task) ((struct pt_regs *) ((char *)(task) + TASK_REGS))
  49
  50 struct task_struct;
  51 #define arch_has_single_step()  1
  52 void user_disable_single_step(struct task_struct *task);
  53 void user_enable_single_step(struct task_struct *task);
  54
  55 #define arch_has_block_step()   1
  56 void user_enable_block_step(struct task_struct *task);
  57
  58 /* XXX should we use iaoq[1] or iaoq[0] ? */
  59 #define user_mode(regs)                 (((regs)->iaoq[0] & 3) ? 1 : 0)
  60 #define user_space(regs)                (((regs)->iasq[1] != 0) ? 1 : 0)
  61 #define instruction_pointer(regs)       ((regs)->iaoq[0] & ~3)
  62 #define user_stack_pointer(regs)        ((regs)->gr[30])
  63 unsigned long profile_pc(struct pt_regs *);
  64 extern void show_regs(struct pt_regs *);
  65
  66
  67 #endif /* __KERNEL__ */
  68
  69 #endif