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 68struct 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 */ 74register 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 80extern unsigned long user_stack(const struct pt_regs *); 81extern void show_regs(struct pt_regs *); 82#define profile_pc(regs) ((regs)->pc) 83 84#define task_pt_regs(task) ((task)->thread.frame0) 85 86#define arch_has_single_step() (1) 87extern void user_enable_single_step(struct task_struct *); 88extern void user_disable_single_step(struct task_struct *); 89 90#endif /* !__ASSEMBLY__ */ 91#endif /* __KERNEL__ */ 92#endif /* _ASM_PTRACE_H */ 93