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, 1995, 1996, 1997, 1998, 1999, 2000 by Ralf Baechle
   7  *
   8  * Machine dependent structs and defines to help the user use
   9  * the ptrace system call.
  10  */
  11 #ifndef _ASM_PTRACE_H
  12 #define _ASM_PTRACE_H
  13
  14 #include <asm/isadep.h>
  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
  26 #ifndef __ASSEMBLY__
  27 /*
  28  * This struct defines the way the registers are stored on the stack during a
  29  * system call/exception. As usual the registers k0/k1 aren't being saved.
  30  */
  31 struct pt_regs {
  32         /* Pad bytes for argument save space on the stack. */
  33         unsigned long pad0[6];
  34
  35         /* Saved main processor registers. */
  36         unsigned long regs[32];
  37
  38         /* Saved special registers. */
  39         unsigned long cp0_status;
  40         unsigned long lo;
  41         unsigned long hi;
  42         unsigned long cp0_badvaddr;
  43         unsigned long cp0_cause;
  44         unsigned long cp0_epc;
  45 };
  46
  47 #define __str2(x) #x
  48 #define __str(x) __str2(x)
  49
  50 #define save_static_function(symbol)                                    \
  51 __asm__ (                                                               \
  52         ".globl\t" #symbol "\n\t"                                       \
  53         ".align\t2\n\t"                                                 \
  54         ".type\t" #symbol ", @function\n\t"                             \
  55         ".ent\t" #symbol ", 0\n"                                        \
  56         #symbol":\n\t"                                                  \
  57         ".frame\t$29, 0, $31\n\t"                                       \
  58         "sw\t$16,"__str(PT_R16)"($29)\t\t\t# save_static_function\n\t"  \
  59         "sw\t$17,"__str(PT_R17)"($29)\n\t"                              \
  60         "sw\t$18,"__str(PT_R18)"($29)\n\t"                              \
  61         "sw\t$19,"__str(PT_R19)"($29)\n\t"                              \
  62         "sw\t$20,"__str(PT_R20)"($29)\n\t"                              \
  63         "sw\t$21,"__str(PT_R21)"($29)\n\t"                              \
  64         "sw\t$22,"__str(PT_R22)"($29)\n\t"                              \
  65         "sw\t$23,"__str(PT_R23)"($29)\n\t"                              \
  66         "sw\t$30,"__str(PT_R30)"($29)\n\t"                              \
  67         ".end\t" #symbol "\n\t"                                         \
  68         ".size\t" #symbol",. - " #symbol)
  69
  70 /* Used in declaration of save_static functions.  */
  71 #define static_unused static __attribute__((unused))
  72
  73 #endif /* !__ASSEMBLY__ */
  74
  75 /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
  76 /* #define PTRACE_GETREGS               12 */
  77 /* #define PTRACE_SETREGS               13 */
  78 /* #define PTRACE_GETFPREGS             14 */
  79 /* #define PTRACE_SETFPREGS             15 */
  80 /* #define PTRACE_GETFPXREGS            18 */
  81 /* #define PTRACE_SETFPXREGS            19 */
  82
  83 #define PTRACE_SETOPTIONS       21
  84
  85 /* options set using PTRACE_SETOPTIONS */
  86 #define PTRACE_O_TRACESYSGOOD   0x00000001
  87
  88 #ifdef __ASSEMBLY__
  89 #include <asm/offset.h>
  90 #endif
  91
  92 #ifdef __KERNEL__
  93
  94 #ifndef __ASSEMBLY__
  95 /*
  96  * Does the process account for user or for system time?
  97  */
  98 #define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
  99
 100 #define instruction_pointer(regs) ((regs)->cp0_epc)
 101
 102 extern void show_regs(struct pt_regs *);
 103 #endif /* !__ASSEMBLY__ */
 104
 105 #endif
 106
 107 #endif /* _ASM_PTRACE_H */