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

   1 /* Dump registers.
   2    Copyright (C) 2000-2022 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <unistd.h>
  20 #include <string.h>
  21 #include <_itoa.h>
  22
  23 static void
  24 hexvalue (unsigned long int value, char *buf, size_t len)
  25 {
  26   char *cp = _itoa_word (value, buf + len, 16, 0);
  27   while (cp > buf)
  28     *--cp = '0';
  29 }
  30
  31 #define REGDUMP_NREGS 32
  32 #define REGDUMP_PER_LINE (80 / (__WORDSIZE / 4 + 4))
  33
  34 static void
  35 register_dump (int fd, ucontext_t *ctx)
  36 {
  37   int i;
  38   char regvalue[__WORDSIZE / 4 + 1];
  39   char str[82 * ((REGDUMP_NREGS + REGDUMP_PER_LINE - 1) / REGDUMP_PER_LINE)];
  40
  41   static const char names[REGDUMP_NREGS][4] = {
  42     "pc", "ra", "sp", "gp", "tp", "t0", "t1", "t2",
  43     "s0", "s1", "a0", "a1", "a2", "a3", "a4", "a5",
  44     "a6", "a7", "s2", "s3", "s4", "s5", "s6", "s7",
  45     "s8", "s9", "sA", "sB", "t3", "t4", "t5", "t6"
  46   };
  47
  48   str[0] = 0;
  49   for (i = 0; i < REGDUMP_NREGS; i++)
  50     {
  51       strcat (str, names[i]);
  52       strcat (str, " ");
  53       hexvalue (ctx->uc_mcontext.__gregs[i], regvalue, __WORDSIZE / 4);
  54       strcat (str, regvalue);
  55
  56       if ((i + 1) % REGDUMP_PER_LINE == 0)
  57         strcat (str, "\n");
  58     }
  59
  60   write (fd, str, strlen (str));
  61 }
  62
  63 #define REGISTER_DUMP register_dump (fd, ctx)