sim/igen/misc.c

   1 /* The IGEN simulator generator for GDB, the GNU Debugger.
   2
   3    Copyright 2002-2024 Free Software Foundation, Inc.
   4
   5    Contributed by Andrew Cagney.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22
  23
  24 #include <stdio.h>
  25 #include <stdarg.h>
  26 #include <ctype.h>
  27
  28 #include "misc.h"
  29
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 /* NB: Because warning and error can be interchanged, neither append a
  34    trailing '\n' */
  35
  36 void
  37 error (const line_ref *line, const char *msg, ...)
  38 {
  39   va_list ap;
  40   if (line != NULL)
  41     fprintf (stderr, "%s:%d: ", line->file_name, line->line_nr);
  42   va_start (ap, msg);
  43   vfprintf (stderr, msg, ap);
  44   va_end (ap);
  45   exit (1);
  46 }
  47
  48 void
  49 warning (const line_ref *line, const char *msg, ...)
  50 {
  51   va_list ap;
  52   if (line != NULL)
  53     fprintf (stderr, "%s:%d: warning: ", line->file_name, line->line_nr);
  54   va_start (ap, msg);
  55   vfprintf (stderr, msg, ap);
  56   va_end (ap);
  57 }
  58
  59 void
  60 notify (const line_ref *line, const char *msg, ...)
  61 {
  62   va_list ap;
  63   if (line != NULL)
  64     fprintf (stdout, "%s %d: info: ", line->file_name, line->line_nr);
  65   va_start (ap, msg);
  66   vfprintf (stdout, msg, ap);
  67   va_end (ap);
  68 }
  69
  70 void *
  71 zalloc (long size)
  72 {
  73   void *memory = malloc (size);
  74   if (memory == NULL)
  75     ERROR ("zalloc failed");
  76   memset (memory, 0, size);
  77   return memory;
  78 }
  79
  80
  81 unsigned long long
  82 a2i (const char *a)
  83 {
  84   int neg = 0;
  85   int base = 10;
  86   unsigned long long num = 0;
  87   int looping;
  88
  89   while (isspace (*a))
  90     a++;
  91
  92   if (strcmp (a, "true") == 0 || strcmp (a, "TRUE") == 0)
  93     return 1;
  94
  95   if (strcmp (a, "false") == 0 || strcmp (a, "FALSE") == 0)
  96     return 0;
  97
  98   if (*a == '-')
  99     {
 100       neg = 1;
 101       a++;
 102     }
 103
 104   if (*a == '0')
 105     {
 106       if (a[1] == 'x' || a[1] == 'X')
 107         {
 108           a += 2;
 109           base = 16;
 110         }
 111       else if (a[1] == 'b' || a[1] == 'B')
 112         {
 113           a += 2;
 114           base = 2;
 115         }
 116       else
 117         base = 8;
 118     }
 119
 120   looping = 1;
 121   while (looping)
 122     {
 123       int ch = *a++;
 124
 125       switch (base)
 126         {
 127         default:
 128           looping = 0;
 129           break;
 130
 131         case 2:
 132           if (ch >= '0' && ch <= '1')
 133             {
 134               num = (num * 2) + (ch - '0');
 135             }
 136           else
 137             {
 138               looping = 0;
 139             }
 140           break;
 141
 142         case 10:
 143           if (ch >= '0' && ch <= '9')
 144             {
 145               num = (num * 10) + (ch - '0');
 146             }
 147           else
 148             {
 149               looping = 0;
 150             }
 151           break;
 152
 153         case 8:
 154           if (ch >= '0' && ch <= '7')
 155             {
 156               num = (num * 8) + (ch - '0');
 157             }
 158           else
 159             {
 160               looping = 0;
 161             }
 162           break;
 163
 164         case 16:
 165           if (ch >= '0' && ch <= '9')
 166             {
 167               num = (num * 16) + (ch - '0');
 168             }
 169           else if (ch >= 'a' && ch <= 'f')
 170             {
 171               num = (num * 16) + (ch - 'a' + 10);
 172             }
 173           else if (ch >= 'A' && ch <= 'F')
 174             {
 175               num = (num * 16) + (ch - 'A' + 10);
 176             }
 177           else
 178             {
 179               looping = 0;
 180             }
 181           break;
 182         }
 183     }
 184
 185   if (neg)
 186     num = -num;
 187
 188   return num;
 189 }
 190
 191 unsigned
 192 target_a2i (int ms_bit_nr, const char *a)
 193 {
 194   if (ms_bit_nr)
 195     return (ms_bit_nr - a2i (a));
 196   else
 197     return a2i (a);
 198 }
 199
 200 unsigned
 201 i2target (int ms_bit_nr, unsigned bit)
 202 {
 203   if (ms_bit_nr)
 204     return ms_bit_nr - bit;
 205   else
 206     return bit;
 207 }
 208
 209
 210 int
 211 name2i (const char *names, const name_map * map)
 212 {
 213   const name_map *curr;
 214   const char *name = names;
 215   while (*name != '\0')
 216     {
 217       /* find our name */
 218       const char *end = strchr (name, ',');
 219       const char *next;
 220       unsigned len;
 221       if (end == NULL)
 222         {
 223           end = strchr (name, '\0');
 224           next = end;
 225         }
 226       else
 227         {
 228           next = end + 1;
 229         }
 230       len = end - name;
 231       /* look it up */
 232       curr = map;
 233       while (curr->name != NULL)
 234         {
 235           if (strncmp (curr->name, name, len) == 0
 236               && strlen (curr->name) == len)
 237             return curr->i;
 238           curr++;
 239         }
 240       name = next;
 241     }
 242   /* nothing found, possibly return a default */
 243   curr = map;
 244   while (curr->name != NULL)
 245     curr++;
 246   if (curr->i >= 0)
 247     return curr->i;
 248   else
 249     error (NULL, "%s contains no valid names\n", names);
 250   return 0;
 251 }
 252
 253 const char *
 254 i2name (const int i, const name_map * map)
 255 {
 256   while (map->name != NULL)
 257     {
 258       if (map->i == i)
 259         return map->name;
 260       map++;
 261     }
 262   error (NULL, "map lookup failed for %d\n", i);
 263   return NULL;
 264 }