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 */ 42