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 static inline unsigned long regs_return_value(struct pt_regs *regs) 117 { 118 return regs->a0; 119 } 120 121 #endif /* __ASSEMBLY__ */ 122 123 #endif /* _ASM_RISCV_PTRACE_H */ 124