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/* Capstone Disassembler Engine */
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/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013> */
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#include <stdlib.h>
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#include <string.h>
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#include "utils.h"
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// return the position of a string in a list of strings
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// or -1 if given string is not in the list
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int str_in_list(char **list, char *s)
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{
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char **l;
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int c = 0;
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for(l = list; *l; c++, l++) {
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if (!strcasecmp(*l, s))
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return c;
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}
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return -1;
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}
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// create a cache for fast id lookup
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static unsigned short *make_id2insn(insn_map *insns, unsigned int size)
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{
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// NOTE: assume that the max id is always put at the end of insns array
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unsigned short max_id = insns[size - 1].id;
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unsigned short i;
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unsigned short *cache = (unsigned short *)cs_mem_calloc(sizeof(*cache), max_id + 1);
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for (i = 1; i < size; i++)
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cache[insns[i].id] = i;
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return cache;
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}
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// look for @id in @insns, given its size in @max. first time call will update @cache.
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// return 0 if not found
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unsigned short insn_find(insn_map *insns, unsigned int max, unsigned int id, unsigned short **cache)
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{
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if (id > insns[max - 1].id)
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return 0;
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if (*cache == NULL)
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*cache = make_id2insn(insns, max);
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return (*cache)[id];
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}
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int name2id(name_map* map, int max, const char *name)
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{
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int i;
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for (i = 0; i < max; i++) {
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if (!strcasecmp(map[i].name, name)) {
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return map[i].id;
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}
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}
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// nothing match
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return -1;
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}
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// count number of positive members in a list.
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// NOTE: list must be guaranteed to end in 0
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unsigned int count_positive(unsigned char *list)
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{
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unsigned int c;
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for (c = 0; list[c] > 0; c++);
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return c;
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}
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char *cs_strdup(const char *str)
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{
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size_t len = strlen(str)+ 1;
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void *new = cs_mem_malloc(len);
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if (new == NULL)
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return NULL;
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return (char *)memmove(new, str, len);
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}
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