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  1. /*
  2.  * Copyright (C) 2005 Ondrej Palkovsky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29.  
  30. #include <symtab.h>
  31. #include <typedefs.h>
  32. #include <arch/byteorder.h>
  33. #include <func.h>
  34. #include <print.h>
  35.  
  36. /** Return entry that seems most likely to correspond to address
  37.  *
  38.  * Return entry that seems most likely to correspond
  39.  * to address passed in the argument.
  40.  *
  41.  * @param addr Address.
  42.  *
  43.  * @return Pointer to respective symbol string on success, NULL otherwise.
  44.  */
  45. char * get_symtab_entry(__native addr)
  46. {
  47.     count_t i;
  48.  
  49.     for (i=1;symbol_table[i].address_le;++i) {
  50.         if (addr < __u64_le2host(symbol_table[i].address_le))
  51.             break;
  52.     }
  53.     if (addr >= __u64_le2host(symbol_table[i-1].address_le))
  54.         return symbol_table[i-1].symbol_name;
  55.     return NULL;
  56. }
  57.  
  58. /** Find symbols that match the parameter forward and print them
  59.  *
  60.  * @param name - search string
  61.  * @param startpos - starting position, changes to found position
  62.  * @return Pointer to the part of string that should be completed or NULL
  63.  */
  64. static char * symtab_search_one(const char *name, int *startpos)
  65. {
  66.     int namelen = strlen(name);
  67.     char *curname;
  68.     int i,j;
  69.     char *foundsym = NULL;
  70.     int foundpos = 0;
  71.     int colonoffset = -1;
  72.  
  73.     for (i=0;name[i];i++)
  74.         if (name[i] == ':') {
  75.             colonoffset = i;
  76.             break;
  77.         }
  78.  
  79.     for (i=*startpos;symbol_table[i].address_le;++i) {
  80.         /* Find a ':' in name */
  81.         curname = symbol_table[i].symbol_name;
  82.         for (j=0; curname[j] && curname[j] != ':'; j++)
  83.             ;
  84.         if (!curname[j])
  85.             continue;
  86.         j -= colonoffset;
  87.         curname += j;
  88.         if (strlen(curname) < namelen)
  89.             continue;
  90.         if (strncmp(curname, name, namelen) == 0) {
  91.             *startpos = i;
  92.             return curname+namelen;
  93.         }
  94.     }
  95.     return NULL;
  96. }
  97.  
  98. /** Return address that corresponds to the entry
  99.  *
  100.  * Search symbol table, and if there is one match, return it
  101.  *
  102.  * @param name Name of the symbol
  103.  * @return 0 - Not found, -1 - Duplicate symbol, other - address of symbol
  104.  */
  105. __address get_symbol_addr(const char *name)
  106. {
  107.     count_t found = 0;
  108.     __address addr = NULL;
  109.     char *hint;
  110.     int i;
  111.  
  112.     i = 0;
  113.     while ((hint=symtab_search_one(name, &i))) {
  114.         if (!strlen(hint)) {
  115.             addr =  __u64_le2host(symbol_table[i].address_le);
  116.             found++;
  117.         }
  118.         i++;
  119.     }
  120.     if (found > 1)
  121.         return ((__address) -1);
  122.     return addr;
  123. }
  124.  
  125. /** Find symbols that match parameter and prints them */
  126. void symtab_print_search(const char *name)
  127. {
  128.     int i;
  129.     __address addr;
  130.     char *realname;
  131.  
  132.  
  133.     i = 0;
  134.     while (symtab_search_one(name, &i)) {
  135.         addr =  __u64_le2host(symbol_table[i].address_le);
  136.         realname = symbol_table[i].symbol_name;
  137.         printf("0x%p: %s\n", addr, realname);
  138.         i++;
  139.     }
  140. }
  141.  
  142. /** Symtab completion
  143.  *
  144.  * @param name - Search string, completes to symbol name
  145.  * @returns - 0 - nothing found, 1 - success, >1 print duplicates
  146.  */
  147. int symtab_compl(char *input)
  148. {
  149.     char output[MAX_SYMBOL_NAME+1];
  150.     int startpos = 0;
  151.     char *foundtxt;
  152.     int found = 0;
  153.     int i;
  154.     char *name = input;
  155.  
  156.     /* Allow completion of pointers  */
  157.     if (name[0] == '*' || name[0] == '&')
  158.         name++;
  159.  
  160.     /* Do not print everything */
  161.     if (!strlen(name))
  162.         return 0;
  163.    
  164.  
  165.     output[0] = '\0';
  166.  
  167.     while ((foundtxt = symtab_search_one(name, &startpos))) {
  168.         startpos++;
  169.         if (!found)
  170.             strncpy(output, foundtxt, strlen(foundtxt)+1);
  171.         else {
  172.             for (i=0; output[i] && foundtxt[i] && output[i]==foundtxt[i]; i++)
  173.                 ;
  174.             output[i] = '\0';
  175.         }
  176.         found++;
  177.     }
  178.     if (!found)
  179.         return 0;
  180.  
  181.     if (found > 1 && !strlen(output)) {
  182.         printf("\n");
  183.         startpos = 0;
  184.         while ((foundtxt = symtab_search_one(name, &startpos))) {
  185.             printf("%s\n", symbol_table[startpos].symbol_name);
  186.             startpos++;
  187.         }
  188.     }
  189.     strncpy(input, output, MAX_SYMBOL_NAME);
  190.     return found;
  191.    
  192. }
  193.