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 #ifdef CONFIG_64BIT 13 #define __ARCH_WANT_COMPAT_SYS_PTRACE 14 #endif 15 16 /* 0 - 31 are integer registers, 32 - 63 are fp registers. */ 17 #define FPR_BASE 32 18 #define PC 64 19 #define CAUSE 65 20 #define BADVADDR 66 21 #define MMHI 67 22 #define MMLO 68 23 #define FPC_CSR 69 24 #define FPC_EIR 70 25 #define DSP_BASE 71 /* 3 more hi / lo register pairs */ 26 #define DSP_CONTROL 77 27 #define ACX 78 28 29 /* 30 * This struct defines the way the registers are stored on the stack during a 31 * system call/exception. As usual the registers k0/k1 aren't being saved. 32 */ 33 struct pt_regs { 34 #ifdef CONFIG_32BIT 35 /* Pad bytes for argument save space on the stack. */ 36 unsigned long pad0[6]; 37 #endif 38 39 /* Saved main processor registers. */ 40 unsigned long regs[32]; 41 42 /* Saved special registers. */ 43 unsigned long cp0_status; 44 unsigned long hi; 45 unsigned long lo; 46 #ifdef CONFIG_CPU_HAS_SMARTMIPS 47 unsigned long acx; 48 #endif 49 unsigned long cp0_badvaddr; 50 unsigned long cp0_cause; 51 unsigned long cp0_epc; 52 #ifdef CONFIG_MIPS_MT_SMTC 53 unsigned long cp0_tcstatus; 54 #endif /* CONFIG_MIPS_MT_SMTC */ 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. */ 78 enum pt_watch_style { 79 pt_watch_style_mips32, 80 pt_watch_style_mips64 81 }; 82 struct 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 97 struct 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))); 103 104 struct pt_watch_regs { 105 enum pt_watch_style style; 106 union { 107 struct mips32_watch_regs mips32; 108 struct mips32_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> 121 122 struct task_struct; 123 124 extern int ptrace_getregs(struct task_struct *child, __s64 __user *data); 125 extern int ptrace_setregs(struct task_struct *child, __s64 __user *data); 126 127 extern int ptrace_getfpregs(struct task_struct *child, __u32 __user *data); 128 extern int ptrace_setfpregs(struct task_struct *child, __u32 __user *data); 129 130 extern int ptrace_get_watch_regs(struct task_struct *child, 131 struct pt_watch_regs __user *addr); 132 extern 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 instruction_pointer(regs) ((regs)->cp0_epc) 141 #define profile_pc(regs) instruction_pointer(regs) 142 143 extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit); 144 145 extern NORET_TYPE void die(const char *, const struct pt_regs *) ATTRIB_NORET; 146 147 static inline void die_if_kernel(const char *str, const struct pt_regs *regs) 148 { 149 if (unlikely(!user_mode(regs))) 150 die(str, regs); 151 } 152 153 #endif 154 155 #endif /* _ASM_PTRACE_H */ 156