arch/c6x/include/asm/ptrace.h

   1 /*
   2  *  Copyright (C) 2004, 2006, 2009, 2010 Texas Instruments Incorporated
   3  *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
   4  *
   5  *  Updated for 2.6.34: Mark Salter <msalter@redhat.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  */
  11 #ifndef _ASM_C6X_PTRACE_H
  12 #define _ASM_C6X_PTRACE_H
  13
  14 #define BKPT_OPCODE     0x56454314      /* illegal opcode */
  15
  16 #ifdef _BIG_ENDIAN
  17 #define PT_LO(odd, even)  odd
  18 #define PT_HI(odd, even)  even
  19 #else
  20 #define PT_LO(odd, even)  even
  21 #define PT_HI(odd, even)  odd
  22 #endif
  23
  24 #define PT_A4_ORG  PT_LO(1, 0)
  25 #define PT_TSR     PT_HI(1, 0)
  26 #define PT_ILC     PT_LO(3, 2)
  27 #define PT_RILC    PT_HI(3, 2)
  28 #define PT_CSR     PT_LO(5, 4)
  29 #define PT_PC      PT_HI(5, 4)
  30 #define PT_B16     PT_LO(7, 6)
  31 #define PT_B17     PT_HI(7, 6)
  32 #define PT_B18     PT_LO(9, 8)
  33 #define PT_B19     PT_HI(9, 8)
  34 #define PT_B20     PT_LO(11, 10)
  35 #define PT_B21     PT_HI(11, 10)
  36 #define PT_B22     PT_LO(13, 12)
  37 #define PT_B23     PT_HI(13, 12)
  38 #define PT_B24     PT_LO(15, 14)
  39 #define PT_B25     PT_HI(15, 14)
  40 #define PT_B26     PT_LO(17, 16)
  41 #define PT_B27     PT_HI(17, 16)
  42 #define PT_B28     PT_LO(19, 18)
  43 #define PT_B29     PT_HI(19, 18)
  44 #define PT_B30     PT_LO(21, 20)
  45 #define PT_B31     PT_HI(21, 20)
  46 #define PT_B0      PT_LO(23, 22)
  47 #define PT_B1      PT_HI(23, 22)
  48 #define PT_B2      PT_LO(25, 24)
  49 #define PT_B3      PT_HI(25, 24)
  50 #define PT_B4      PT_LO(27, 26)
  51 #define PT_B5      PT_HI(27, 26)
  52 #define PT_B6      PT_LO(29, 28)
  53 #define PT_B7      PT_HI(29, 28)
  54 #define PT_B8      PT_LO(31, 30)
  55 #define PT_B9      PT_HI(31, 30)
  56 #define PT_B10     PT_LO(33, 32)
  57 #define PT_B11     PT_HI(33, 32)
  58 #define PT_B12     PT_LO(35, 34)
  59 #define PT_B13     PT_HI(35, 34)
  60 #define PT_A16     PT_LO(37, 36)
  61 #define PT_A17     PT_HI(37, 36)
  62 #define PT_A18     PT_LO(39, 38)
  63 #define PT_A19     PT_HI(39, 38)
  64 #define PT_A20     PT_LO(41, 40)
  65 #define PT_A21     PT_HI(41, 40)
  66 #define PT_A22     PT_LO(43, 42)
  67 #define PT_A23     PT_HI(43, 42)
  68 #define PT_A24     PT_LO(45, 44)
  69 #define PT_A25     PT_HI(45, 44)
  70 #define PT_A26     PT_LO(47, 46)
  71 #define PT_A27     PT_HI(47, 46)
  72 #define PT_A28     PT_LO(49, 48)
  73 #define PT_A29     PT_HI(49, 48)
  74 #define PT_A30     PT_LO(51, 50)
  75 #define PT_A31     PT_HI(51, 50)
  76 #define PT_A0      PT_LO(53, 52)
  77 #define PT_A1      PT_HI(53, 52)
  78 #define PT_A2      PT_LO(55, 54)
  79 #define PT_A3      PT_HI(55, 54)
  80 #define PT_A4      PT_LO(57, 56)
  81 #define PT_A5      PT_HI(57, 56)
  82 #define PT_A6      PT_LO(59, 58)
  83 #define PT_A7      PT_HI(59, 58)
  84 #define PT_A8      PT_LO(61, 60)
  85 #define PT_A9      PT_HI(61, 60)
  86 #define PT_A10     PT_LO(63, 62)
  87 #define PT_A11     PT_HI(63, 62)
  88 #define PT_A12     PT_LO(65, 64)
  89 #define PT_A13     PT_HI(65, 64)
  90 #define PT_A14     PT_LO(67, 66)
  91 #define PT_A15     PT_HI(67, 66)
  92 #define PT_B14     PT_LO(69, 68)
  93 #define PT_B15     PT_HI(69, 68)
  94
  95 #define NR_PTREGS  70
  96
  97 #define PT_DP      PT_B14  /* Data Segment Pointer (B14) */
  98 #define PT_SP      PT_B15  /* Stack Pointer (B15)  */
  99
 100 #ifndef __ASSEMBLY__
 101
 102 #ifdef _BIG_ENDIAN
 103 #define REG_PAIR(odd, even) unsigned long odd; unsigned long even
 104 #else
 105 #define REG_PAIR(odd, even) unsigned long even; unsigned long odd
 106 #endif
 107
 108 /*
 109  * this struct defines the way the registers are stored on the
 110  * stack during a system call. fields defined with REG_PAIR
 111  * are saved and restored using double-word memory operations
 112  * which means the word ordering of the pair depends on endianess.
 113  */
 114 struct pt_regs {
 115         REG_PAIR(tsr, orig_a4);
 116         REG_PAIR(rilc, ilc);
 117         REG_PAIR(pc, csr);
 118
 119         REG_PAIR(b17, b16);
 120         REG_PAIR(b19, b18);
 121         REG_PAIR(b21, b20);
 122         REG_PAIR(b23, b22);
 123         REG_PAIR(b25, b24);
 124         REG_PAIR(b27, b26);
 125         REG_PAIR(b29, b28);
 126         REG_PAIR(b31, b30);
 127
 128         REG_PAIR(b1, b0);
 129         REG_PAIR(b3, b2);
 130         REG_PAIR(b5, b4);
 131         REG_PAIR(b7, b6);
 132         REG_PAIR(b9, b8);
 133         REG_PAIR(b11, b10);
 134         REG_PAIR(b13, b12);
 135
 136         REG_PAIR(a17, a16);
 137         REG_PAIR(a19, a18);
 138         REG_PAIR(a21, a20);
 139         REG_PAIR(a23, a22);
 140         REG_PAIR(a25, a24);
 141         REG_PAIR(a27, a26);
 142         REG_PAIR(a29, a28);
 143         REG_PAIR(a31, a30);
 144
 145         REG_PAIR(a1, a0);
 146         REG_PAIR(a3, a2);
 147         REG_PAIR(a5, a4);
 148         REG_PAIR(a7, a6);
 149         REG_PAIR(a9, a8);
 150         REG_PAIR(a11, a10);
 151         REG_PAIR(a13, a12);
 152
 153         REG_PAIR(a15, a14);
 154         REG_PAIR(sp, dp);
 155 };
 156
 157 #ifdef __KERNEL__
 158
 159 #include <linux/linkage.h>
 160
 161 #define user_mode(regs) ((((regs)->tsr) & 0x40) != 0)
 162
 163 #define instruction_pointer(regs) ((regs)->pc)
 164 #define profile_pc(regs) instruction_pointer(regs)
 165 #define user_stack_pointer(regs) ((regs)->sp)
 166
 167 extern void show_regs(struct pt_regs *);
 168
 169 extern asmlinkage unsigned long syscall_trace_entry(struct pt_regs *regs);
 170 extern asmlinkage void syscall_trace_exit(struct pt_regs *regs);
 171
 172 #endif /* __KERNEL__ */
 173 #endif /* __ASSEMBLY__ */
 174 #endif /* _ASM_C6X_PTRACE_H */