OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libiberty/] [hex.c] - Blame information for rev 801

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 736 jeremybenn 
/* Hex character manipulation support.
2 
   Copyright (C) 1995, 2001 Free Software Foundation, Inc.
3 
 
4 
This file is part of the libiberty library.
5 
Libiberty is free software; you can redistribute it and/or
6 
modify it under the terms of the GNU Library General Public
7 
License as published by the Free Software Foundation; either
8 
version 2 of the License, or (at your option) any later version.
9 
 
10 
Libiberty 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 
Library General Public License for more details.
14 
 
15 
You should have received a copy of the GNU Library General Public
16 
License along with libiberty; see the file COPYING.LIB.  If
17 
not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
18 
Boston, MA 02110-1301, USA.  */
19 
 
20 
#include <stdio.h>  /* for EOF */
21 
#ifdef HAVE_CONFIG_H
22 
#include "config.h"
23 
#endif
24 
#include "libiberty.h"
25 
#include "safe-ctype.h" /* for HOST_CHARSET_ASCII */
26 
 
27 
#if EOF != -1
28 
 #error "hex.c requires EOF == -1"
29 
#endif
30 
 
31 
/*
32 
 
33 
@deftypefn Extension void hex_init (void)
34 
 
35 
Initializes the array mapping the current character set to
36 
corresponding hex values.  This function must be called before any
37 
call to @code{hex_p} or @code{hex_value}.  If you fail to call it, a
38 
default ASCII-based table will normally be used on ASCII systems.
39 
 
40 
@end deftypefn
41 
 
42 
@deftypefn Extension int hex_p (int @var{c})
43 
 
44 
Evaluates to non-zero if the given character is a valid hex character,
45 
or zero if it is not.  Note that the value you pass will be cast to
46 
@code{unsigned char} within the macro.
47 
 
48 
@end deftypefn
49 
 
50 
@deftypefn Extension {unsigned int} hex_value (int @var{c})
51 
 
52 
Returns the numeric equivalent of the given character when interpreted
53 
as a hexadecimal digit.  The result is undefined if you pass an
54 
invalid hex digit.  Note that the value you pass will be cast to
55 
@code{unsigned char} within the macro.
56 
 
57 
The @code{hex_value} macro returns @code{unsigned int}, rather than
58 
signed @code{int}, to make it easier to use in parsing addresses from
59 
hex dump files: a signed @code{int} would be sign-extended when
60 
converted to a wider unsigned type --- like @code{bfd_vma}, on some
61 
systems.
62 
 
63 
@end deftypefn
64 
 
65 
@undocumented _hex_array_size
66 
@undocumented _hex_bad
67 
@undocumented _hex_value
68 
 
69 
*/
70 
 
71 
 
72 
/* Are we ASCII? */
73 
#if HOST_CHARSET == HOST_CHARSET_ASCII
74 
 
75 
const unsigned char _hex_value[_hex_array_size] =
76 
{
77 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* NUL SOH STX ETX */
78 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* EOT ENQ ACK BEL */
79 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* BS  HT  LF  VT  */
80 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* FF  CR  SO  SI  */
81 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* DLE DC1 DC2 DC3 */
82 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* DC4 NAK SYN ETB */
83 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* CAN EM  SUB ESC */
84 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* FS  GS  RS  US  */
85 
 
86 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* SP  !   "   #   */
87 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* $   %   &   '   */
88 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* (   )   *   +   */
89 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* ,   -   .   /   */
90 
  0,        1,        2,        3,          /* 0   1   2   3   */
91 
  4,        5,        6,        7,          /* 4   5   6   7   */
92 
  8,        9,        _hex_bad, _hex_bad,   /* 8   9   :   ;   */
93 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* <   =   >   ?   */
94 
 
95 
  _hex_bad, 10,       11,       12,         /* @   A   B   C   */
96 
  13,       14,       15,       _hex_bad,   /* D   E   F   G   */
97 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* H   I   J   K   */
98 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* L   M   N   O   */
99 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* P   Q   R   S   */
100 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* T   U   V   W   */
101 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* X   Y   Z   [   */
102 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* \   ]   ^   _   */
103 
 
104 
  _hex_bad, 10,       11,       12,         /* `   a   b   c   */
105 
  13,       14,       15,       _hex_bad,   /* d   e   f   g   */
106 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* h   i   j   k   */
107 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* l   m   n   o   */
108 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* p   q   r   s   */
109 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* t   u   v   w   */
110 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* x   y   z   {   */
111 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* |   }   ~   DEL */
112 
 
113 
  /* The high half of unsigned char, all values are _hex_bad.  */
114 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
115 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
116 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
117 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
118 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
119 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
120 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
121 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
122 
 
123 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
124 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
125 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
126 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
127 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
128 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
129 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
130 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
131 
 
132 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
133 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
134 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
135 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
136 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
137 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
138 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
139 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
140 
 
141 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
142 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
143 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
144 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
145 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
146 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
147 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
148 
  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
149 
};
150 
#define HEX_TABLE_INITIALIZED
151 
 
152 
#else
153 
 
154 
unsigned char _hex_value[_hex_array_size];
155 
 
156 
#endif /* not ASCII */
157 
 
158 
void
159 
hex_init (void)
160 
{
161 
#ifndef HEX_TABLE_INITIALIZED
162 
  int i;
163 
 
164 
  for (i=0; i<_hex_array_size; i++)
165 
    {
166 
      switch (i)
167 
        {
168 
        case '0': _hex_value[i] = 0; break;
169 
        case '1': _hex_value[i] = 1; break;
170 
        case '2': _hex_value[i] = 2; break;
171 
        case '3': _hex_value[i] = 3; break;
172 
        case '4': _hex_value[i] = 4; break;
173 
        case '5': _hex_value[i] = 5; break;
174 
        case '6': _hex_value[i] = 6; break;
175 
        case '7': _hex_value[i] = 7; break;
176 
        case '8': _hex_value[i] = 8; break;
177 
        case '9': _hex_value[i] = 9; break;
178 
 
179 
        case 'a': case 'A': _hex_value[i] = 10; break;
180 
        case 'b': case 'B': _hex_value[i] = 11; break;
181 
        case 'c': case 'C': _hex_value[i] = 12; break;
182 
        case 'd': case 'D': _hex_value[i] = 13; break;
183 
        case 'e': case 'E': _hex_value[i] = 14; break;
184 
        case 'f': case 'F': _hex_value[i] = 15; break;
185 
 
186 
        default:
187 
          _hex_value[i] = _hex_bad;
188 
          break;
189 
        }
190 
    }
191 
#endif
192 
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.