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
  22 struct 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
  76 static inline unsigned long instruction_pointer(struct pt_regs *regs)
  77 {
  78         return GET_IP(regs);
  79 }
  80 static 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
  92 static inline unsigned long user_stack_pointer(struct pt_regs *regs)
  93 {
  94         return GET_USP(regs);
  95 }
  96 static 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
 106 static inline unsigned long frame_pointer(struct pt_regs *regs)
 107 {
 108         return GET_FP(regs);
 109 }
 110 static 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 */