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 #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 #ifdef __KERNEL__
  78
  79 #include <linux/linkage.h>
  80 #include <asm/isadep.h>
  81
  82 /*
  83  * Does the process account for user or for system time?
  84  */
  85 #define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
  86
  87 #define instruction_pointer(regs) ((regs)->cp0_epc)
  88 #define profile_pc(regs) instruction_pointer(regs)
  89
  90 extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
  91
  92 extern NORET_TYPE void die(const char *, const struct pt_regs *) ATTRIB_NORET;
  93
  94 static inline void die_if_kernel(const char *str, const struct pt_regs *regs)
  95 {
  96         if (unlikely(!user_mode(regs)))
  97                 die(str, regs);
  98 }
  99
 100 #endif
 101
 102 #endif /* _ASM_PTRACE_H */