arch/frv/include/asm/ptrace.h

   1 /* ptrace.h: ptrace() relevant definitions
   2  *
   3  * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11 #ifndef _ASM_PTRACE_H
  12 #define _ASM_PTRACE_H
  13
  14 #include <asm/registers.h>
  15 #ifdef __KERNEL__
  16 #include <asm/irq_regs.h>
  17
  18 #define in_syscall(regs) (((regs)->tbr & TBR_TT) == TBR_TT_TRAP0)
  19 #endif
  20
  21
  22 #define PT_PSR          0
  23 #define PT_ISR          1
  24 #define PT_CCR          2
  25 #define PT_CCCR         3
  26 #define PT_LR           4
  27 #define PT_LCR          5
  28 #define PT_PC           6
  29
  30 #define PT__STATUS      7       /* exception status */
  31 #define PT_SYSCALLNO    8       /* syscall number or -1 */
  32 #define PT_ORIG_GR8     9       /* saved GR8 for signal handling */
  33 #define PT_GNER0        10
  34 #define PT_GNER1        11
  35 #define PT_IACC0H       12
  36 #define PT_IACC0L       13
  37
  38 #define PT_GR(j)        ( 14 + (j))     /* GRj for 0<=j<=63 */
  39 #define PT_FR(j)        ( 78 + (j))     /* FRj for 0<=j<=63 */
  40 #define PT_FNER(j)      (142 + (j))     /* FNERj for 0<=j<=1 */
  41 #define PT_MSR(j)       (144 + (j))     /* MSRj for 0<=j<=2 */
  42 #define PT_ACC(j)       (146 + (j))     /* ACCj for 0<=j<=7 */
  43 #define PT_ACCG(jklm)   (154 + (jklm))  /* ACCGjklm for 0<=jklm<=1 (reads four regs per slot) */
  44 #define PT_FSR(j)       (156 + (j))     /* FSRj for 0<=j<=0 */
  45 #define PT__GPEND       78
  46 #define PT__END         157
  47
  48 #define PT_TBR          PT_GR(0)
  49 #define PT_SP           PT_GR(1)
  50 #define PT_FP           PT_GR(2)
  51 #define PT_PREV_FRAME   PT_GR(28)       /* previous exception frame pointer (old gr28 value) */
  52 #define PT_CURR_TASK    PT_GR(29)       /* current task */
  53
  54
  55 /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
  56 #define PTRACE_GETREGS          12
  57 #define PTRACE_SETREGS          13
  58 #define PTRACE_GETFPREGS        14
  59 #define PTRACE_SETFPREGS        15
  60 #define PTRACE_GETFDPIC         31      /* get the ELF fdpic loadmap address */
  61
  62 #define PTRACE_GETFDPIC_EXEC    0       /* [addr] request the executable loadmap */
  63 #define PTRACE_GETFDPIC_INTERP  1       /* [addr] request the interpreter loadmap */
  64
  65 #ifdef __KERNEL__
  66 #ifndef __ASSEMBLY__
  67
  68 struct task_struct;
  69
  70 /*
  71  * we dedicate GR28 to keeping a pointer to the current exception frame
  72  * - gr28 is destroyed on entry to the kernel from userspace
  73  */
  74 register struct pt_regs *__frame asm("gr28");
  75
  76 #define user_mode(regs)                 (!((regs)->psr & PSR_S))
  77 #define instruction_pointer(regs)       ((regs)->pc)
  78 #define user_stack_pointer(regs)        ((regs)->sp)
  79
  80 extern unsigned long user_stack(const struct pt_regs *);
  81 #define profile_pc(regs) ((regs)->pc)
  82
  83 #define task_pt_regs(task) ((task)->thread.frame0)
  84
  85 #define arch_has_single_step()  (1)
  86
  87 #endif /* !__ASSEMBLY__ */
  88 #endif /* __KERNEL__ */
  89 #endif /* _ASM_PTRACE_H */