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

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (C) 2012 Regents of the University of California
   4 */
   5
   6#ifndef _ASM_RISCV_PTRACE_H
   7#define _ASM_RISCV_PTRACE_H
   8
   9#include <uapi/asm/ptrace.h>
  10#include <asm/csr.h>
  11
  12#ifndef __ASSEMBLY__
  13
  14struct pt_regs {
  15        unsigned long sepc;
  16        unsigned long ra;
  17        unsigned long sp;
  18        unsigned long gp;
  19        unsigned long tp;
  20        unsigned long t0;
  21        unsigned long t1;
  22        unsigned long t2;
  23        unsigned long s0;
  24        unsigned long s1;
  25        unsigned long a0;
  26        unsigned long a1;
  27        unsigned long a2;
  28        unsigned long a3;
  29        unsigned long a4;
  30        unsigned long a5;
  31        unsigned long a6;
  32        unsigned long a7;
  33        unsigned long s2;
  34        unsigned long s3;
  35        unsigned long s4;
  36        unsigned long s5;
  37        unsigned long s6;
  38        unsigned long s7;
  39        unsigned long s8;
  40        unsigned long s9;
  41        unsigned long s10;
  42        unsigned long s11;
  43        unsigned long t3;
  44        unsigned long t4;
  45        unsigned long t5;
  46        unsigned long t6;
  47        /* Supervisor CSRs */
  48        unsigned long sstatus;
  49        unsigned long sbadaddr;
  50        unsigned long scause;
  51        /* a0 value before the syscall */
  52        unsigned long orig_a0;
  53};
  54
  55#ifdef CONFIG_64BIT
  56#define REG_FMT "%016lx"
  57#else
  58#define REG_FMT "%08lx"
  59#endif
  60
  61#define user_mode(regs) (((regs)->sstatus & SR_SPP) == 0)
  62
  63
  64/* Helpers for working with the instruction pointer */
  65static inline unsigned long instruction_pointer(struct pt_regs *regs)
  66{
  67        return regs->sepc;
  68}
  69static inline void instruction_pointer_set(struct pt_regs *regs,
  70                                           unsigned long val)
  71{
  72        regs->sepc = val;
  73}
  74
  75#define profile_pc(regs) instruction_pointer(regs)
  76
  77/* Helpers for working with the user stack pointer */
  78static inline unsigned long user_stack_pointer(struct pt_regs *regs)
  79{
  80        return regs->sp;
  81}
  82static inline void user_stack_pointer_set(struct pt_regs *regs,
  83                                          unsigned long val)
  84{
  85        regs->sp =  val;
  86}
  87
  88/* Helpers for working with the frame pointer */
  89static inline unsigned long frame_pointer(struct pt_regs *regs)
  90{
  91        return regs->s0;
  92}
  93static inline void frame_pointer_set(struct pt_regs *regs,
  94                                     unsigned long val)
  95{
  96        regs->s0 = val;
  97}
  98
  99static inline unsigned long regs_return_value(struct pt_regs *regs)
 100{
 101        return regs->a0;
 102}
 103
 104#endif /* __ASSEMBLY__ */
 105
 106#endif /* _ASM_RISCV_PTRACE_H */
 107