sysdeps/unix/sysv/linux/mips/register-dump.h

   1 /* Dump registers.
   2    Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Andreas Jaeger <aj@suse.de>, 2000.
   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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <sys/uio.h>
  22 #include <stdio-common/_itoa.h>
  23
  24 /* We will print the register dump in this format:
  25
  26  R0   XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  27  R8   XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  28  R16  XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  29  R24  XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  30            pc    cause  status   badvaddr       lo       hi
  31       XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  32  The FPU registers will not be printed.
  33 */
  34
  35 static void
  36 hexvalue (unsigned long int value, char *buf, size_t len)
  37 {
  38   char *cp = _itoa_word (value, buf + len, 16, 0);
  39   while (cp > buf)
  40     *--cp = '0';
  41 }
  42
  43 static void
  44 register_dump (int fd, struct sigcontext *ctx)
  45 {
  46   char regs[38][8];
  47   struct iovec iov[38 * 2 + 10];
  48   size_t nr = 0;
  49   int i;
  50
  51 #define ADD_STRING(str) \
  52   iov[nr].iov_base = (char *) str;                                            \
  53   iov[nr].iov_len = strlen (str);                                             \
  54   ++nr
  55 #define ADD_MEM(str, len) \
  56   iov[nr].iov_base = str;                                                     \
  57   iov[nr].iov_len = len;                                                      \
  58   ++nr
  59
  60   /* Generate strings of register contents.  */
  61   for (i = 0; i < 32; i++)
  62     hexvalue (ctx->sc_regs[i], regs[i], 8);
  63   hexvalue (ctx->sc_pc, regs[32], 8);
  64   hexvalue (ctx->sc_cause, regs[33], 8);
  65   hexvalue (ctx->sc_status, regs[34], 8);
  66   hexvalue (ctx->sc_badvaddr, regs[35], 8);
  67   hexvalue (ctx->sc_mdhi, regs[36], 8);
  68   hexvalue (ctx->sc_mdlo, regs[37], 8);
  69
  70   /* Generate the output.  */
  71   ADD_STRING ("Register dump:\n\n R0   ");
  72   for (i = 0; i < 8; i++)
  73     {
  74       ADD_MEM (regs[i], 8);
  75       ADD_STRING (" ");
  76     }
  77   ADD_STRING ("\n R8   ");
  78   for (i = 8; i < 16; i++)
  79     {
  80       ADD_MEM (regs[i], 8);
  81       ADD_STRING (" ");
  82     }
  83   ADD_STRING ("\n R16  ");
  84   for (i = 16; i < 24; i++)
  85     {
  86       ADD_MEM (regs[i], 8);
  87       ADD_STRING (" ");
  88     }
  89   ADD_STRING ("\n R24  ");
  90   for (i = 24; i < 32; i++)
  91     {
  92       ADD_MEM (regs[i], 8);
  93       ADD_STRING (" ");
  94     }
  95   ADD_STRING ("\n           pc    cause  status   badvaddr       lo       hi\n      ");
  96   for (i = 32; i < 38; i++)
  97     {
  98       ADD_MEM (regs[i], 8);
  99       ADD_STRING (" ");
 100     }
 101   ADD_STRING ("\n");
 102
 103   /* Write the stuff out.  */
 104   writev (fd, iov, nr);
 105 }
 106
 107
 108 #define REGISTER_DUMP register_dump (fd, ctx)