include/asm-mips/ptrace.h

   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
  13 /* 0 - 31 are integer registers, 32 - 63 are fp registers.  */
  14 #define FPR_BASE        32
  15 #define PC              64
  16 #define CAUSE           65
  17 #define BADVADDR        66
  18 #define MMHI            67
  19 #define MMLO            68
  20 #define FPC_CSR         69
  21 #define FPC_EIR         70
  22 #define DSP_BASE        71              /* 3 more hi / lo register pairs */
  23 #define DSP_CONTROL     77
  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  */
  29 struct 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         unsigned long cp0_badvaddr;
  43         unsigned long cp0_cause;
  44         unsigned long cp0_epc;
  45 #ifdef CONFIG_MIPS_MT_SMTC
  46         unsigned long cp0_tcstatus;
  47 #endif /* CONFIG_MIPS_MT_SMTC */
  48 } __attribute__ ((aligned (8)));
  49
  50 /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
  51 #define PTRACE_GETREGS          12
  52 #define PTRACE_SETREGS          13
  53 #define PTRACE_GETFPREGS                14
  54 #define PTRACE_SETFPREGS                15
  55 /* #define PTRACE_GETFPXREGS            18 */
  56 /* #define PTRACE_SETFPXREGS            19 */
  57
  58 #define PTRACE_OLDSETOPTIONS    21
  59
  60 #define PTRACE_GET_THREAD_AREA  25
  61 #define PTRACE_SET_THREAD_AREA  26
  62
  63 /* Calls to trace a 64bit program from a 32bit program.  */
  64 #define PTRACE_PEEKTEXT_3264    0xc0
  65 #define PTRACE_PEEKDATA_3264    0xc1
  66 #define PTRACE_POKETEXT_3264    0xc2
  67 #define PTRACE_POKEDATA_3264    0xc3
  68 #define PTRACE_GET_THREAD_AREA_3264     0xc4
  69
  70 #ifdef __KERNEL__
  71
  72 #include <linux/linkage.h>
  73 #include <asm/isadep.h>
  74
  75 /*
  76  * Does the process account for user or for system time?
  77  */
  78 #define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
  79
  80 #define instruction_pointer(regs) ((regs)->cp0_epc)
  81 #define profile_pc(regs) instruction_pointer(regs)
  82
  83 extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
  84
  85 extern NORET_TYPE void die(const char *, struct pt_regs *);
  86
  87 static inline void die_if_kernel(const char *str, struct pt_regs *regs)
  88 {
  89         if (unlikely(!user_mode(regs)))
  90                 die(str, regs);
  91 }
  92
  93 #endif
  94
  95 #endif /* _ASM_PTRACE_H */