LXR linux/arch/riscv/include/asm/ptrace.h

   1/*
   2 * Copyright (C) 2012 Regents of the University of California
   3 *
   4 *   This program is free software; you can redistribute it and/or
   5 *   modify it under the terms of the GNU General Public License
   6 *   as published by the Free Software Foundation, version 2.
   7 *
   8 *   This program is distributed in the hope that it will be useful,
   9 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 *   GNU General Public License for more details.
  12 */
  13
  14#ifndef _ASM_RISCV_PTRACE_H
  15#define _ASM_RISCV_PTRACE_H
  16
  17#include <uapi/asm/ptrace.h>
  18#include <asm/csr.h>
  19
  20#ifndef __ASSEMBLY__
  21
  22struct pt_regs {
  23        unsigned long sepc;
  24        unsigned long ra;
  25        unsigned long sp;
  26        unsigned long gp;
  27        unsigned long tp;
  28        unsigned long t0;
  29        unsigned long t1;
  30        unsigned long t2;
  31        unsigned long s0;
  32        unsigned long s1;
  33        unsigned long a0;
  34        unsigned long a1;
  35        unsigned long a2;
  36        unsigned long a3;
  37        unsigned long a4;
  38        unsigned long a5;
  39        unsigned long a6;
  40        unsigned long a7;
  41        unsigned long s2;
  42        unsigned long s3;
  43        unsigned long s4;
  44        unsigned long s5;
  45        unsigned long s6;
  46        unsigned long s7;
  47        unsigned long s8;
  48        unsigned long s9;
  49        unsigned long s10;
  50        unsigned long s11;
  51        unsigned long t3;
  52        unsigned long t4;
  53        unsigned long t5;
  54        unsigned long t6;
  55        /* Supervisor CSRs */
  56        unsigned long sstatus;
  57        unsigned long sbadaddr;
  58        unsigned long scause;
  59        /* a0 value before the syscall */
  60        unsigned long orig_a0;
  61};
  62
  63#ifdef CONFIG_64BIT
  64#define REG_FMT "%016lx"
  65#else
  66#define REG_FMT "%08lx"
  67#endif
  68
  69#define user_mode(regs) (((regs)->sstatus & SR_SPP) == 0)
  70
  71
  72/* Helpers for working with the instruction pointer */
  73#define GET_IP(regs) ((regs)->sepc)
  74#define SET_IP(regs, val) (GET_IP(regs) = (val))
  75
  76static inline unsigned long instruction_pointer(struct pt_regs *regs)
  77{
  78        return GET_IP(regs);
  79}
  80static inline void instruction_pointer_set(struct pt_regs *regs,
  81                                           unsigned long val)
  82{
  83        SET_IP(regs, val);
  84}
  85
  86#define profile_pc(regs) instruction_pointer(regs)
  87
  88/* Helpers for working with the user stack pointer */
  89#define GET_USP(regs) ((regs)->sp)
  90#define SET_USP(regs, val) (GET_USP(regs) = (val))
  91
  92static inline unsigned long user_stack_pointer(struct pt_regs *regs)
  93{
  94        return GET_USP(regs);
  95}
  96static inline void user_stack_pointer_set(struct pt_regs *regs,
  97                                          unsigned long val)
  98{
  99        SET_USP(regs, val);
 100}
 101
 102/* Helpers for working with the frame pointer */
 103#define GET_FP(regs) ((regs)->s0)
 104#define SET_FP(regs, val) (GET_FP(regs) = (val))
 105
 106static inline unsigned long frame_pointer(struct pt_regs *regs)
 107{
 108        return GET_FP(regs);
 109}
 110static inline void frame_pointer_set(struct pt_regs *regs,
 111                                     unsigned long val)
 112{
 113        SET_FP(regs, val);
 114}
 115
 116#endif /* __ASSEMBLY__ */
 117
 118#endif /* _ASM_RISCV_PTRACE_H */
 119