ports/sysdeps/unix/sysv/linux/ia64/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    Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <string.h>
  21 #include <sys/uio.h>
  22 #include <_itoa.h>
  23
  24 /* We will print the register dump in this format:
  25
  26  GP:   XXXXXXXXXXXXXXXX R2:   XXXXXXXXXXXXXXXX R3:   XXXXXXXXXXXXXXXX
  27  R8:   XXXXXXXXXXXXXXXX R9:   XXXXXXXXXXXXXXXX R10:  XXXXXXXXXXXXXXXX
  28  R11:  XXXXXXXXXXXXXXXX SP:   XXXXXXXXXXXXXXXX TP:   XXXXXXXXXXXXXXXX
  29  R14:  XXXXXXXXXXXXXXXX R15:  XXXXXXXXXXXXXXXX R16:  XXXXXXXXXXXXXXXX
  30  R17:  XXXXXXXXXXXXXXXX R18:  XXXXXXXXXXXXXXXX R19:  XXXXXXXXXXXXXXXX
  31  R20:  XXXXXXXXXXXXXXXX R21:  XXXXXXXXXXXXXXXX R22:  XXXXXXXXXXXXXXXX
  32  R23:  XXXXXXXXXXXXXXXX R24:  XXXXXXXXXXXXXXXX R25:  XXXXXXXXXXXXXXXX
  33  R26:  XXXXXXXXXXXXXXXX R27:  XXXXXXXXXXXXXXXX R28:  XXXXXXXXXXXXXXXX
  34  R29:  XXXXXXXXXXXXXXXX R30:  XXXXXXXXXXXXXXXX R31:  XXXXXXXXXXXXXXXX
  35
  36  RP:   XXXXXXXXXXXXXXXX B6:   XXXXXXXXXXXXXXXX B7:   XXXXXXXXXXXXXXXX
  37
  38  IP:   XXXXXXXXXXXXXXXX RSC:  XXXXXXXXXXXXXXXX PR:   XXXXXXXXXXXXXXXX
  39  PFS:  XXXXXXXXXXXXXXXX UNAT: XXXXXXXXXXXXXXXX CFM:  XXXXXXXXXXXXXXXX
  40  CCV:  XXXXXXXXXXXXXXXX FPSR: XXXXXXXXXXXXXXXX
  41
  42  F32:  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX F33:  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  43  F34:  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX F35:  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  44 ...
  45  F124: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX F125: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  46  F126: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX F127: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  47  */
  48
  49 static void
  50 hexvalue (unsigned long int value, char *buf, size_t len)
  51 {
  52   char *cp = _itoa_word (value, buf + len, 16, 0);
  53   while (cp > buf)
  54     *--cp = '0';
  55 }
  56
  57 static void
  58 regvalue (unsigned long int *value, char letter, int regno, char *buf)
  59 {
  60   int n = regno >= 100 ? 3 : regno >= 10 ? 2 : 1;
  61   buf[0] = ' ';
  62   buf[1] = letter;
  63   _itoa_word (regno, buf + 2 + n, 10, 0);
  64   buf[2 + n] = ':';
  65   for (++n; n <= 4; ++n)
  66     buf[2 + n] = ' ';
  67   hexvalue (value[0], buf + 7, 16);
  68   if (letter == 'F')
  69     {
  70       hexvalue (value[1], buf + 7 + 16, 16);
  71       buf[7 + 32] = '\n';
  72     }
  73   else
  74     buf[7 + 16] = '\n';
  75 }
  76
  77 static void
  78 register_dump (int fd, struct sigcontext *ctx)
  79 {
  80   char gpregs[32 - 5][8 + 16];
  81   char fpregs[128 - 32][8 + 32];
  82   char bpregs[3][8 + 16];
  83   char spregs[8][16];
  84   struct iovec iov[146];
  85   size_t nr = 0;
  86   int i;
  87
  88 #define ADD_STRING(str) \
  89   do                                                                          \
  90     {                                                                         \
  91       iov[nr].iov_base = (char *) str;                                        \
  92       iov[nr].iov_len = strlen (str);                                         \
  93       ++nr;                                                                   \
  94     }                                                                         \
  95   while (0)
  96 #define ADD_MEM(str, len) \
  97   do                                                                          \
  98     {                                                                         \
  99       iov[nr].iov_base = str;                                                 \
 100       iov[nr].iov_len = len;                                                  \
 101       ++nr;                                                                   \
 102     }                                                                         \
 103   while (0)
 104
 105   /* Generate strings of register contents.  */
 106   for (i = 1; i < 4; ++i)
 107     {
 108       regvalue (&ctx->sc_gr[i], 'R', i, gpregs[i - 1]);
 109       if (ctx->sc_nat & (1L << i))
 110         memcpy (gpregs[i - 1] + 7, "NaT             ", 16);
 111     }
 112   for (i = 8; i < 32; ++i)
 113     {
 114       regvalue (&ctx->sc_gr[i], 'R', i, gpregs[i - 5]);
 115       if (ctx->sc_nat & (1L << i))
 116         memcpy (gpregs[i - 1] + 7, "NaT             ", 16);
 117     }
 118   memcpy (gpregs[0] + 1, "GP:", 3);
 119   memcpy (gpregs[7] + 1, "SP: ", 4);
 120   memcpy (gpregs[8] + 1, "TP: ", 4);
 121
 122   regvalue (&ctx->sc_br[0], 'B', 0, bpregs[0]);
 123   regvalue (&ctx->sc_br[6], 'B', 6, bpregs[1]);
 124   regvalue (&ctx->sc_br[7], 'B', 7, bpregs[2]);
 125   memcpy (bpregs[0] + 1, "RP:", 3);
 126
 127   if (ctx->sc_flags & IA64_SC_FLAG_FPH_VALID)
 128     for (i = 32; i < 128; ++i)
 129       regvalue (&ctx->sc_fr[i].u.bits[0], 'F', i, fpregs[i - 32]);
 130
 131   hexvalue (ctx->sc_ip, spregs[0], sizeof (spregs[0]));
 132   hexvalue (ctx->sc_ar_rsc, spregs[1], sizeof (spregs[1]));
 133   hexvalue (ctx->sc_pr, spregs[2], sizeof (spregs[2]));
 134   hexvalue (ctx->sc_ar_pfs, spregs[3], sizeof (spregs[3]));
 135   hexvalue (ctx->sc_ar_unat, spregs[4], sizeof (spregs[4]));
 136   hexvalue (ctx->sc_cfm, spregs[5], sizeof (spregs[5]));
 137   hexvalue (ctx->sc_ar_ccv, spregs[6], sizeof (spregs[6]));
 138   hexvalue (ctx->sc_ar_fpsr, spregs[7], sizeof (spregs[7]));
 139
 140   /* Generate the output.  */
 141   ADD_STRING ("Register dump:\n\n");
 142
 143   for (i = 0; i < 32 - 5; ++i)
 144     ADD_MEM (gpregs[i], sizeof (gpregs[0]) - 1 + ((i % 3) == 2));
 145   ADD_STRING ("\n");
 146
 147   for (i = 0; i < 3; ++i)
 148     ADD_MEM (bpregs[i], sizeof (bpregs[0]) - 1);
 149
 150   ADD_STRING ("\n\n IP:   ");
 151   ADD_MEM (spregs[0], sizeof (spregs[0]));
 152   ADD_STRING (" RSC:  ");
 153   ADD_MEM (spregs[1], sizeof (spregs[0]));
 154   ADD_STRING (" PR:   ");
 155   ADD_MEM (spregs[2], sizeof (spregs[0]));
 156   ADD_STRING ("\n PFS:  ");
 157   ADD_MEM (spregs[3], sizeof (spregs[0]));
 158   ADD_STRING (" UNAT: ");
 159   ADD_MEM (spregs[4], sizeof (spregs[0]));
 160   ADD_STRING (" CFM:  ");
 161   ADD_MEM (spregs[5], sizeof (spregs[0]));
 162   ADD_STRING ("\n CCV:  ");
 163   ADD_MEM (spregs[6], sizeof (spregs[0]));
 164   ADD_STRING (" FPSR: ");
 165   ADD_MEM (spregs[7], sizeof (spregs[0]));
 166   ADD_STRING ("\n");
 167
 168   if (ctx->sc_flags & IA64_SC_FLAG_FPH_VALID)
 169     {
 170       ADD_STRING ("\n");
 171
 172       for (i = 0; i < 128 - 32; ++i)
 173         ADD_MEM (fpregs[i], sizeof (fpregs[0]) - 1 + (i & 1));
 174     }
 175
 176   /* Write the stuff out.  */
 177   writev (fd, iov, nr);
 178 }
 179
 180
 181 #define REGISTER_DUMP register_dump (fd, ctx)