1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle 7 * Copyright (C) 1999, 2000 Silicon Graphics, Inc. 8 */ 9#ifndef _ASM_PTRACE_H 10#define _ASM_PTRACE_H 11 12/* 0 - 31 are integer registers, 32 - 63 are fp registers. */ 13#define FPR_BASE 32 14#define PC 64 15#define CAUSE 65 16#define BADVADDR 66 17#define MMHI 67 18#define MMLO 68 19#define FPC_CSR 69 20#define FPC_EIR 70 21#define DSP_BASE 71 /* 3 more hi / lo register pairs */ 22#define DSP_CONTROL 77 23#define ACX 78 24 25/* 26 * This struct defines the way the registers are stored on the stack during a 27 * system call/exception. As usual the registers k0/k1 aren't being saved. 28 */ 29struct pt_regs { 30#ifdef CONFIG_32BIT 31 /* Pad bytes for argument save space on the stack. */ 32 unsigned long pad0[6]; 33#endif 34 35 /* Saved main processor registers. */ 36 unsigned long regs[32]; 37 38 /* Saved special registers. */ 39 unsigned long cp0_status; 40 unsigned long hi; 41 unsigned long lo; 42#ifdef CONFIG_CPU_HAS_SMARTMIPS 43 unsigned long acx; 44#endif 45 unsigned long cp0_badvaddr; 46 unsigned long cp0_cause; 47 unsigned long cp0_epc; 48#ifdef CONFIG_MIPS_MT_SMTC 49 unsigned long cp0_tcstatus; 50#endif /* CONFIG_MIPS_MT_SMTC */ 51#ifdef CONFIG_CPU_CAVIUM_OCTEON 52 unsigned long long mpl[3]; /* MTM{0,1,2} */ 53 unsigned long long mtp[3]; /* MTP{0,1,2} */ 54#endif 55} __attribute__ ((aligned (8))); 56 57/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */ 58#define PTRACE_GETREGS 12 59#define PTRACE_SETREGS 13 60#define PTRACE_GETFPREGS 14 61#define PTRACE_SETFPREGS 15 62/* #define PTRACE_GETFPXREGS 18 */ 63/* #define PTRACE_SETFPXREGS 19 */ 64 65#define PTRACE_OLDSETOPTIONS 21 66 67#define PTRACE_GET_THREAD_AREA 25 68#define PTRACE_SET_THREAD_AREA 26 69 70/* Calls to trace a 64bit program from a 32bit program. */ 71#define PTRACE_PEEKTEXT_3264 0xc0 72#define PTRACE_PEEKDATA_3264 0xc1 73#define PTRACE_POKETEXT_3264 0xc2 74#define PTRACE_POKEDATA_3264 0xc3 75#define PTRACE_GET_THREAD_AREA_3264 0xc4 76 77/* Read and write watchpoint registers. */ 78enum pt_watch_style { 79 pt_watch_style_mips32, 80 pt_watch_style_mips64 81}; 82struct mips32_watch_regs { 83 unsigned int watchlo[8]; 84 /* Lower 16 bits of watchhi. */ 85 unsigned short watchhi[8]; 86 /* Valid mask and I R W bits. 87 * bit 0 -- 1 if W bit is usable. 88 * bit 1 -- 1 if R bit is usable. 89 * bit 2 -- 1 if I bit is usable. 90 * bits 3 - 11 -- Valid watchhi mask bits. 91 */ 92 unsigned short watch_masks[8]; 93 /* The number of valid watch register pairs. */ 94 unsigned int num_valid; 95} __attribute__((aligned(8))); 96 97struct mips64_watch_regs { 98 unsigned long long watchlo[8]; 99 unsigned short watchhi[8]; 100 unsigned short watch_masks[8]; 101 unsigned int num_valid; 102} __attribute__((aligned(8))); 103 104struct pt_watch_regs { 105 enum pt_watch_style style; 106 union { 107 struct mips32_watch_regs mips32; 108 struct mips64_watch_regs mips64; 109 }; 110}; 111 112#define PTRACE_GET_WATCH_REGS 0xd0 113#define PTRACE_SET_WATCH_REGS 0xd1 114 115#ifdef __KERNEL__ 116 117#include <linux/compiler.h> 118#include <linux/linkage.h> 119#include <linux/types.h> 120#include <asm/isadep.h> 121 122struct task_struct; 123 124extern int ptrace_getregs(struct task_struct *child, __s64 __user *data); 125extern int ptrace_setregs(struct task_struct *child, __s64 __user *data); 126 127extern int ptrace_getfpregs(struct task_struct *child, __u32 __user *data); 128extern int ptrace_setfpregs(struct task_struct *child, __u32 __user *data); 129 130extern int ptrace_get_watch_regs(struct task_struct *child, 131 struct pt_watch_regs __user *addr); 132extern int ptrace_set_watch_regs(struct task_struct *child, 133 struct pt_watch_regs __user *addr); 134 135/* 136 * Does the process account for user or for system time? 137 */ 138#define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER) 139 140#define regs_return_value(_regs) ((_regs)->regs[2]) 141#define instruction_pointer(regs) ((regs)->cp0_epc) 142#define profile_pc(regs) instruction_pointer(regs) 143 144extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit); 145 146extern NORET_TYPE void die(const char *, struct pt_regs *) ATTRIB_NORET; 147 148static inline void die_if_kernel(const char *str, struct pt_regs *regs) 149{ 150 if (unlikely(!user_mode(regs))) 151 die(str, regs); 152} 153 154#endif 155 156#endif /* _ASM_PTRACE_H */ 157