mono/dis/util.c

   1 /*
   2  * util.c: Assorted utilities for the disassembler
   3  *
   4  * Author:
   5  *   Miguel de Icaza (miguel@ximian.com)
   6  *
   7  * (C) 2001 Ximian, Inc (http://www.ximian.com)
   8  */
   9 #include <config.h>
  10 #include <glib.h>
  11 #include <string.h>
  12 #include <stdio.h>
  13 #include "util.h"
  14
  15 /**
  16  * map:
  17  * @code: code to lookup in table
  18  * @table: table to decode code
  19  *
  20  * Warning: returns static buffer.
  21  */
  22 const char *
  23 map (guint32 code, dis_map_t *table)
  24 {
  25         int i;
  26
  27         for (i = 0; table [i].str != NULL; i++)
  28                 if (table [i].code == code)
  29                         return table [i].str;
  30         return "invalid-flags";
  31 }
  32
  33 /**
  34  * flags:
  35  * @code: bitfield
  36  * @table: table to decode bitfield
  37  *
  38  * Warning: returns static buffer.
  39  */
  40 const char *
  41 flags (guint32 code, dis_map_t *table)
  42 {
  43         static char buffer [1024];
  44         int i;
  45
  46         buffer [0] = 0;
  47
  48         for (i = 0; table [i].str != NULL; i++)
  49                 if (table [i].code & code) {
  50                         if (buffer [0])
  51                                 strcat (buffer, " ");
  52                         strcat (buffer, table [i].str);
  53                 }
  54
  55         return buffer;
  56 }
  57
  58 /**
  59  * hex_dump:
  60  * @buffer: pointer to buffer to dump
  61  * @base: numbering base to use
  62  * @count: number of bytes to dump
  63  */
  64 void
  65 hex_dump (const char *buffer, int base, int count)
  66 {
  67         int show_header = 1;
  68         int i;
  69
  70         if (count < 0){
  71                 count = -count;
  72                 show_header = 0;
  73         }
  74
  75         for (i = 0; i < count; i++){
  76                 if (show_header)
  77                         if ((i % 16) == 0)
  78                                 printf ("\n0x%08X: ", (unsigned char) base + i);
  79
  80                 printf ("%02X ", (unsigned char) (buffer [i]));
  81         }
  82         fflush (stdout);
  83 }
  84
  85 char*
  86 data_dump (const char *data, int len, const char* prefix) {
  87         int i, j;
  88         GString *str;
  89         if (!len)
  90                 return g_strdup (" ()\n");
  91         str = g_string_new (" (");
  92         for (i = 0; i + 15 < len; i += 16) {
  93                 if (i == 0)
  94                         g_string_append_printf (str, "\n");
  95                 g_string_append_printf (str, "%s", prefix);
  96                 for (j = 0; j < 16; ++j)
  97                         g_string_append_printf (str, "%02X ", (unsigned char) (data [i + j]));
  98                 g_string_append_printf (str, i == len - 16? ") // ": "  // ");
  99                 for (j = 0; j < 16; ++j)
 100                         g_string_append_printf (str, "%c", data [i + j] >= 32 && data [i + j] <= 126? data [i + j]: '.');
 101                 g_string_append_printf (str, "\n");
 102         }
 103         if (i == len)
 104                 return g_string_free (str, FALSE);
 105         if (len > 16)
 106                 g_string_append_printf (str, "%s", prefix);
 107         j = i;
 108         for (; i < len; ++i)
 109                 g_string_append_printf (str, "%02X ", (unsigned char) (data [i]));
 110         if (len > 16) {
 111                 /* align */
 112                 int count = 16 - (len % 16);
 113                 for (i = 0; i < count; ++i)
 114                         g_string_append_printf (str, "   ");
 115         }
 116         g_string_append_printf (str, ") // ");
 117         for (i = j; i < len; ++i)
 118                 g_string_append_printf (str, "%c", data [i] >= 32 && data [i] <= 126? data [i]: '.');
 119         g_string_append_printf (str, "\n");
 120         return g_string_free (str, FALSE);
 121 }
 122