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
  14 struct pt_regs {
  15         unsigned long epc;
  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/Machine CSRs */
  48         unsigned long status;
  49         unsigned long badaddr;
  50         unsigned long cause;
  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)->status & SR_PP) == 0)
  62
  63
  64 /* Helpers for working with the instruction pointer */
  65 static inline unsigned long instruction_pointer(struct pt_regs *regs)
  66 {
  67         return regs->epc;
  68 }
  69 static inline void instruction_pointer_set(struct pt_regs *regs,
  70                                            unsigned long val)
  71 {
  72         regs->epc = val;
  73 }
  74
  75 #define profile_pc(regs) instruction_pointer(regs)
  76
  77 /* Helpers for working with the user stack pointer */
  78 static inline unsigned long user_stack_pointer(struct pt_regs *regs)
  79 {
  80         return regs->sp;
  81 }
  82 static 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 */
  89 static inline unsigned long frame_pointer(struct pt_regs *regs)
  90 {
  91         return regs->s0;
  92 }
  93 static inline void frame_pointer_set(struct pt_regs *regs,
  94                                      unsigned long val)
  95 {
  96         regs->s0 = val;
  97 }
  98
  99 static 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 */