ports/sysdeps/unix/sysv/linux/alpha/register-dump.h

   1 /* Dump registers.
   2    Copyright (C) 2004-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <stddef.h>
  20 #include <string.h>
  21
  22 /* We will print the register dump in this format:
  23
  24     V0: XXXXXXXXXXXXXXXX    T0: XXXXXXXXXXXXXXXX    T1: XXXXXXXXXXXXXXXX
  25     T2: XXXXXXXXXXXXXXXX    T3: XXXXXXXXXXXXXXXX    T4: XXXXXXXXXXXXXXXX
  26     T5: XXXXXXXXXXXXXXXX    T6: XXXXXXXXXXXXXXXX    T7: XXXXXXXXXXXXXXXX
  27     S0: XXXXXXXXXXXXXXXX    S1: XXXXXXXXXXXXXXXX    S2: XXXXXXXXXXXXXXXX
  28     S3: XXXXXXXXXXXXXXXX    S4: XXXXXXXXXXXXXXXX    S5: XXXXXXXXXXXXXXXX
  29     S6: XXXXXXXXXXXXXXXX    A0: XXXXXXXXXXXXXXXX    A1: XXXXXXXXXXXXXXXX
  30     A2: XXXXXXXXXXXXXXXX    A3: XXXXXXXXXXXXXXXX    A4: XXXXXXXXXXXXXXXX
  31     A5: XXXXXXXXXXXXXXXX    T8: XXXXXXXXXXXXXXXX    T9: XXXXXXXXXXXXXXXX
  32    T10: XXXXXXXXXXXXXXXX   T11: XXXXXXXXXXXXXXXX    RA: XXXXXXXXXXXXXXXX
  33    T12: XXXXXXXXXXXXXXXX    AT: XXXXXXXXXXXXXXXX    GP: XXXXXXXXXXXXXXXX
  34     SP: XXXXXXXXXXXXXXXX    PC: XXXXXXXXXXXXXXXX
  35
  36    FP0: XXXXXXXXXXXXXXXX   FP1: XXXXXXXXXXXXXXXX   FP2: XXXXXXXXXXXXXXXX
  37    FP3: XXXXXXXXXXXXXXXX   FP4: XXXXXXXXXXXXXXXX   FP5: XXXXXXXXXXXXXXXX
  38    FP6: XXXXXXXXXXXXXXXX   FP7: XXXXXXXXXXXXXXXX   FP8: XXXXXXXXXXXXXXXX
  39    FP9: XXXXXXXXXXXXXXXX  FP10: XXXXXXXXXXXXXXXX  FP11: XXXXXXXXXXXXXXXX
  40   FP12: XXXXXXXXXXXXXXXX  FP13: XXXXXXXXXXXXXXXX  FP14: XXXXXXXXXXXXXXXX
  41   FP15: XXXXXXXXXXXXXXXX  FP16: XXXXXXXXXXXXXXXX  FP17: XXXXXXXXXXXXXXXX
  42   FP18: XXXXXXXXXXXXXXXX  FP19: XXXXXXXXXXXXXXXX  FP20: XXXXXXXXXXXXXXXX
  43   FP21: XXXXXXXXXXXXXXXX  FP22: XXXXXXXXXXXXXXXX  FP23: XXXXXXXXXXXXXXXX
  44   FP24: XXXXXXXXXXXXXXXX  FP25: XXXXXXXXXXXXXXXX  FP26: XXXXXXXXXXXXXXXX
  45   FP27: XXXXXXXXXXXXXXXX  FP28: XXXXXXXXXXXXXXXX  FP29: XXXXXXXXXXXXXXXX
  46   FP30: XXXXXXXXXXXXXXXX  FPCR: XXXXXXXXXXXXXXXX
  47
  48    TA0: XXXXXXXXXXXXXXXX   TA1: XXXXXXXXXXXXXXXX   TA2: XXXXXXXXXXXXXXXX
  49 */
  50
  51 #define NREGS (32+32+3)
  52
  53 static const char __attribute__((aligned(8))) regnames[NREGS][8] =
  54 {
  55   "    V0: ", "    T0: ", "    T1: ",
  56   "    T2: ", "    T3: ", "    T4: ",
  57   "    T5: ", "    T6: ", "    T7: ",
  58   "    S0: ", "    S1: ", "    S2: ",
  59   "    S3: ", "    S4: ", "    S5: ",
  60   "    S6: ", "    A0: ", "    A1: ",
  61   "    A2: ", "    A3: ", "    A4: ",
  62   "    A5: ", "    T8: ", "    T9: ",
  63   "   T10: ", "   T11: ", "    RA: ",
  64   "   T12: ", "    AT: ", "    GP: ",
  65   "    SP: ", "    PC: ",
  66
  67   "   FP0: ", "   FP1: ", "   FP2: ",
  68   "   FP3: ", "   FP4: ", "   FP5: ",
  69   "   FP6: ", "   FP7: ", "   FP8: ",
  70   "   FP9: ", "  FP10: ", "  FP11: ",
  71   "  FP12: ", "  FP13: ", "  FP14: ",
  72   "  FP15: ", "  FP16: ", "  FP17: ",
  73   "  FP18: ", "  FP19: ", "  FP20: ",
  74   "  FP21: ", "  FP22: ", "  FP23: ",
  75   "  FP24: ", "  FP25: ", "  FP26: ",
  76   "  FP27: ", "  FP28: ", "  FP29: ",
  77   "  FP30: ", "  FPCR: ",
  78
  79   "   TA0: ", "   TA1: ", "   TA2: "
  80 };
  81
  82 #define O(FIELD, LF)  offsetof(struct sigcontext, FIELD) + LF
  83
  84 static const int offsets[NREGS] =
  85 {
  86   O(sc_regs[0], 0),  O(sc_regs[1], 0),  O(sc_regs[2], 1),
  87   O(sc_regs[3], 0),  O(sc_regs[4], 0),  O(sc_regs[5], 1),
  88   O(sc_regs[6], 0),  O(sc_regs[7], 0),  O(sc_regs[8], 1),
  89   O(sc_regs[9], 0),  O(sc_regs[10], 0), O(sc_regs[11], 1),
  90   O(sc_regs[12], 0), O(sc_regs[13], 0), O(sc_regs[14], 1),
  91   O(sc_regs[15], 0), O(sc_regs[16], 0), O(sc_regs[17], 1),
  92   O(sc_regs[18], 0), O(sc_regs[19], 0), O(sc_regs[20], 1),
  93   O(sc_regs[21], 0), O(sc_regs[22], 0), O(sc_regs[23], 1),
  94   O(sc_regs[24], 0), O(sc_regs[25], 0), O(sc_regs[26], 1),
  95   O(sc_regs[27], 0), O(sc_regs[28], 0), O(sc_regs[29], 1),
  96   O(sc_regs[30], 0), O(sc_pc, 2),
  97
  98   O(sc_fpregs[0], 0),  O(sc_fpregs[1], 0),  O(sc_fpregs[2], 1),
  99   O(sc_fpregs[3], 0),  O(sc_fpregs[4], 0),  O(sc_fpregs[5], 1),
 100   O(sc_fpregs[6], 0),  O(sc_fpregs[7], 0),  O(sc_fpregs[8], 1),
 101   O(sc_fpregs[9], 0),  O(sc_fpregs[10], 0), O(sc_fpregs[11], 1),
 102   O(sc_fpregs[12], 0), O(sc_fpregs[13], 0), O(sc_fpregs[14], 1),
 103   O(sc_fpregs[15], 0), O(sc_fpregs[16], 0), O(sc_fpregs[17], 1),
 104   O(sc_fpregs[18], 0), O(sc_fpregs[19], 0), O(sc_fpregs[20], 1),
 105   O(sc_fpregs[21], 0), O(sc_fpregs[22], 0), O(sc_fpregs[23], 1),
 106   O(sc_fpregs[24], 0), O(sc_fpregs[25], 0), O(sc_fpregs[26], 1),
 107   O(sc_fpregs[27], 0), O(sc_fpregs[28], 0), O(sc_fpregs[29], 1),
 108   O(sc_fpregs[30], 0), O(sc_fpcr, 2),
 109
 110   O(sc_traparg_a0, 0),  O(sc_traparg_a1, 0),  O(sc_traparg_a2, 1)
 111 };
 112
 113 #undef O
 114
 115 static void
 116 register_dump (int fd, struct sigcontext *ctx)
 117 {
 118   char buf[NREGS*(8+16) + 25 + 80];
 119   char *p = buf;
 120   size_t i;
 121
 122   p = stpcpy (p, "Register dump:\n\n");
 123
 124   for (i = 0; i < NREGS; ++i)
 125     {
 126       int this_offset, this_lf;
 127       unsigned long val;
 128       signed long j;
 129
 130       this_offset = offsets[i];
 131       this_lf = this_offset & 7;
 132
 133       val = *(unsigned long *)(((size_t)ctx + this_offset) & -8);
 134
 135       memcpy (p, regnames[i], 8);
 136       p += 8;
 137
 138       for (j = 60; j >= 0; j -= 4)
 139         {
 140           unsigned long x = (val >> j) & 15;
 141           x += x < 10 ? '0' : 'a' - 10;
 142           *p++ = x;
 143         }
 144
 145       if (this_lf > 0)
 146         {
 147           if (this_lf > 1)
 148             *p++ = '\n';
 149           *p++ = '\n';
 150         }
 151     }
 152
 153   write (fd, buf, p - buf);
 154 }
 155
 156 #define REGISTER_DUMP register_dump (fd, ctx)