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/irq_regs.h>
  15 #include <uapi/asm/ptrace.h>
  16
  17 #define in_syscall(regs) (((regs)->tbr & TBR_TT) == TBR_TT_TRAP0)
  18 #ifndef __ASSEMBLY__
  19
  20 struct task_struct;
  21
  22 /*
  23  * we dedicate GR28 to keeping a pointer to the current exception frame
  24  * - gr28 is destroyed on entry to the kernel from userspace
  25  */
  26 register struct pt_regs *__frame asm("gr28");
  27
  28 #define user_mode(regs)                 (!((regs)->psr & PSR_S))
  29 #define instruction_pointer(regs)       ((regs)->pc)
  30 #define user_stack_pointer(regs)        ((regs)->sp)
  31 #define current_pt_regs()               (__frame)
  32
  33 extern unsigned long user_stack(const struct pt_regs *);
  34 #define profile_pc(regs) ((regs)->pc)
  35
  36 #define task_pt_regs(task) ((task)->thread.frame0)
  37
  38 #define arch_has_single_step()  (1)
  39
  40 #endif /* !__ASSEMBLY__ */
  41 #endif /* _ASM_PTRACE_H */