X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=libiberty%2Fhex.c;h=f2b57e3b817a9b042175c746f734e9588be79e24;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=3a2eef03d4c07c74d463185169d27b86245ffaaa;hpb=dc9e099fc0eced486ae2b49455c9da113c11f4ff;p=deliverable%2Fbinutils-gdb.git

diff --git a/libiberty/hex.c b/libiberty/hex.c
index 3a2eef03d4..f2b57e3b81 100644
--- a/libiberty/hex.c
+++ b/libiberty/hex.c
@@ -1,5 +1,5 @@
 /* Hex character manipulation support.
-   Copyright (C) 1995 Free Software Foundation, Inc.
+   Copyright (C) 1995-2020 Free Software Foundation, Inc.
 
 This file is part of the libiberty library.
 Libiberty is free software; you can redistribute it and/or
@@ -14,20 +14,179 @@ Library General Public License for more details.
 
 You should have received a copy of the GNU Library General Public
 License along with libiberty; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+Boston, MA 02110-1301, USA.  */
 
+#include <stdio.h>  /* for EOF */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "libiberty.h"
+#include "safe-ctype.h" /* for HOST_CHARSET_ASCII */
 
-char _hex_value[_hex_array_size];
+#if EOF != -1
+ #error "hex.c requires EOF == -1"
+#endif
 
-void hex_init ()
+/*
+
+@deftypefn Extension void hex_init (void)
+
+Initializes the array mapping the current character set to
+corresponding hex values.  This function must be called before any
+call to @code{hex_p} or @code{hex_value}.  If you fail to call it, a
+default ASCII-based table will normally be used on ASCII systems.
+
+@end deftypefn
+
+@deftypefn Extension int hex_p (int @var{c})
+
+Evaluates to non-zero if the given character is a valid hex character,
+or zero if it is not.  Note that the value you pass will be cast to
+@code{unsigned char} within the macro.
+
+@end deftypefn
+
+@deftypefn Extension {unsigned int} hex_value (int @var{c})
+
+Returns the numeric equivalent of the given character when interpreted
+as a hexadecimal digit.  The result is undefined if you pass an
+invalid hex digit.  Note that the value you pass will be cast to
+@code{unsigned char} within the macro.
+
+The @code{hex_value} macro returns @code{unsigned int}, rather than
+signed @code{int}, to make it easier to use in parsing addresses from
+hex dump files: a signed @code{int} would be sign-extended when
+converted to a wider unsigned type --- like @code{bfd_vma}, on some
+systems.
+
+@end deftypefn
+
+@undocumented _hex_array_size
+@undocumented _hex_bad
+@undocumented _hex_value
+
+*/
+
+
+/* Are we ASCII? */
+#if HOST_CHARSET == HOST_CHARSET_ASCII
+
+const unsigned char _hex_value[_hex_array_size] =
 {
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* NUL SOH STX ETX */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* EOT ENQ ACK BEL */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* BS  HT  LF  VT  */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* FF  CR  SO  SI  */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* DLE DC1 DC2 DC3 */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* DC4 NAK SYN ETB */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* CAN EM  SUB ESC */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* FS  GS  RS  US  */
+
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* SP  !   "   #   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* $   %   &   '   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* (   )   *   +   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* ,   -   .   /   */
+  0,        1,        2,        3,          /* 0   1   2   3   */
+  4,        5,        6,        7,          /* 4   5   6   7   */
+  8,        9,        _hex_bad, _hex_bad,   /* 8   9   :   ;   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* <   =   >   ?   */
+
+  _hex_bad, 10,       11,       12,         /* @   A   B   C   */
+  13,       14,       15,       _hex_bad,   /* D   E   F   G   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* H   I   J   K   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* L   M   N   O   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* P   Q   R   S   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* T   U   V   W   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* X   Y   Z   [   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* \   ]   ^   _   */
+
+  _hex_bad, 10,       11,       12,         /* `   a   b   c   */
+  13,       14,       15,       _hex_bad,   /* d   e   f   g   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* h   i   j   k   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* l   m   n   o   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* p   q   r   s   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* t   u   v   w   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* x   y   z   {   */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,   /* |   }   ~   DEL */
+
+  /* The high half of unsigned char, all values are _hex_bad.  */
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+  _hex_bad, _hex_bad, _hex_bad, _hex_bad,
+};
+#define HEX_TABLE_INITIALIZED
+
+#else
+
+unsigned char _hex_value[_hex_array_size];
+
+#endif /* not ASCII */
+
+void
+hex_init (void)
+{
+#ifndef HEX_TABLE_INITIALIZED
   int i;
-  for (i = 0; i < _hex_array_size; i++)
-    _hex_value[i] = _hex_bad;
-  for (i = 0; i < 10; i++)
-    _hex_value['0' + i] = i;
-  for (i = 0; i < 6; i++)
-    _hex_value['a' + i] = _hex_value['A' + i] = 10 + i;
+
+  for (i=0; i<_hex_array_size; i++)
+    {
+      switch (i)
+	{
+	case '0': _hex_value[i] = 0; break;
+	case '1': _hex_value[i] = 1; break;
+	case '2': _hex_value[i] = 2; break;
+	case '3': _hex_value[i] = 3; break;
+	case '4': _hex_value[i] = 4; break;
+	case '5': _hex_value[i] = 5; break;
+	case '6': _hex_value[i] = 6; break;
+	case '7': _hex_value[i] = 7; break;
+	case '8': _hex_value[i] = 8; break;
+	case '9': _hex_value[i] = 9; break;
+
+	case 'a': case 'A': _hex_value[i] = 10; break;
+	case 'b': case 'B': _hex_value[i] = 11; break;
+	case 'c': case 'C': _hex_value[i] = 12; break;
+	case 'd': case 'D': _hex_value[i] = 13; break;
+	case 'e': case 'E': _hex_value[i] = 14; break;
+	case 'f': case 'F': _hex_value[i] = 15; break;
+
+	default:
+	  _hex_value[i] = _hex_bad;
+	  break;
+	}
+    }
+#endif
 }