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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.     int colonoffset = -1;
  70.  
  71.     for (i=0;name[i];i++)
  72.         if (name[i] == ':') {
  73.             colonoffset = i;
  74.             break;
  75.         }
  76.  
  77.     for (i=*startpos;symbol_table[i].address_le;++i) {
  78.         /* Find a ':' in name */
  79.         curname = symbol_table[i].symbol_name;
  80.         for (j=0; curname[j] && curname[j] != ':'; j++)
  81.             ;
  82.         if (!curname[j])
  83.             continue;
  84.         j -= colonoffset;
  85.         curname += j;
  86.         if (strlen(curname) < namelen)
  87.             continue;
  88.         if (strncmp(curname, name, namelen) == 0) {
  89.             *startpos = i;
  90.             return curname+namelen;
  91.         }
  92.     }
  93.     return NULL;
  94. }
  95.  
  96. /** Return address that corresponds to the entry
  97.  *
  98.  * Search symbol table, and if there is one match, return it
  99.  *
  100.  * @param name Name of the symbol
  101.  * @return 0 - Not found, -1 - Duplicate symbol, other - address of symbol
  102.  */
  103. __address get_symbol_addr(const char *name)
  104. {
  105.     count_t found = 0;
  106.     __address addr = NULL;
  107.     char *hint;
  108.     int i;
  109.  
  110.     i = 0;
  111.     while ((hint=symtab_search_one(name, &i))) {
  112.         if (!strlen(hint)) {
  113.             addr =  __u64_le2host(symbol_table[i].address_le);
  114.             found++;
  115.         }
  116.         i++;
  117.     }
  118.     if (found > 1)
  119.         return ((__address) -1);
  120.     return addr;
  121. }
  122.  
  123. /** Find symbols that match parameter and prints them */
  124. void symtab_print_search(const char *name)
  125. {
  126.     int i;
  127.     __address addr;
  128.     char *realname;
  129.  
  130.  
  131.     i = 0;
  132.     while (symtab_search_one(name, &i)) {
  133.         addr =  __u64_le2host(symbol_table[i].address_le);
  134.         realname = symbol_table[i].symbol_name;
  135.         printf("%.*p: %s\n", sizeof(__address) * 2, addr, realname);
  136.         i++;
  137.     }
  138. }
  139.  
  140. /** Symtab completion
  141.  *
  142.  * @param name - Search string, completes to symbol name
  143.  * @returns - 0 - nothing found, 1 - success, >1 print duplicates
  144.  */
  145. int symtab_compl(char *input)
  146. {
  147.     char output[MAX_SYMBOL_NAME+1];
  148.     int startpos = 0;
  149.     char *foundtxt;
  150.     int found = 0;
  151.     int i;
  152.     char *name = input;
  153.  
  154.     /* Allow completion of pointers  */
  155.     if (name[0] == '*' || name[0] == '&')
  156.         name++;
  157.  
  158.     /* Do not print everything */
  159.     if (!strlen(name))
  160.         return 0;
  161.    
  162.  
  163.     output[0] = '\0';
  164.  
  165.     while ((foundtxt = symtab_search_one(name, &startpos))) {
  166.         startpos++;
  167.         if (!found)
  168.             strncpy(output, foundtxt, strlen(foundtxt)+1);
  169.         else {
  170.             for (i=0; output[i] && foundtxt[i] && output[i]==foundtxt[i]; i++)
  171.                 ;
  172.             output[i] = '\0';
  173.         }
  174.         found++;
  175.     }
  176.     if (!found)
  177.         return 0;
  178.  
  179.     if (found > 1 && !strlen(output)) {
  180.         printf("\n");
  181.         startpos = 0;
  182.         while ((foundtxt = symtab_search_one(name, &startpos))) {
  183.             printf("%s\n", symbol_table[startpos].symbol_name);
  184.             startpos++;
  185.         }
  186.     }
  187.     strncpy(input, output, MAX_SYMBOL_NAME);
  188.     return found;
  189.    
  190. }
  191.