nasmlib/malloc.c

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 1996-2016 The NASM Authors - All Rights Reserved
   4  *   See the file AUTHORS included with the NASM distribution for
   5  *   the specific copyright holders.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following
   9  *   conditions are met:
  10  *
  11  *   * Redistributions of source code must retain the above copyright
  12  *     notice, this list of conditions and the following disclaimer.
  13  *   * Redistributions in binary form must reproduce the above
  14  *     copyright notice, this list of conditions and the following
  15  *     disclaimer in the documentation and/or other materials provided
  16  *     with the distribution.
  17  *
  18  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  19  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  20  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  21  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  23  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  29  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  30  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * ----------------------------------------------------------------------- */
  33
  34 /*
  35  * nasmlib.c    library routines for the Netwide Assembler
  36  */
  37
  38 #include "compiler.h"
  39
  40 #include <stdlib.h>
  41
  42 #include "nasmlib.h"
  43
  44 void *nasm_malloc(size_t size)
  45 {
  46     void *p = malloc(size);
  47     if (!p)
  48         nasm_fatal(ERR_NOFILE, "out of memory");
  49     return p;
  50 }
  51
  52 void *nasm_calloc(size_t size, size_t nelem)
  53 {
  54     void *p = calloc(size, nelem);
  55     if (!p)
  56         nasm_fatal(ERR_NOFILE, "out of memory");
  57     return p;
  58 }
  59
  60 void *nasm_zalloc(size_t size)
  61 {
  62     return nasm_calloc(size, 1);
  63 }
  64
  65 void *nasm_realloc(void *q, size_t size)
  66 {
  67     void *p = q ? realloc(q, size) : malloc(size);
  68     if (!p)
  69         nasm_fatal(ERR_NOFILE, "out of memory");
  70     return p;
  71 }
  72
  73 void nasm_free(void *q)
  74 {
  75     if (q)
  76         free(q);
  77 }
  78
  79 char *nasm_strdup(const char *s)
  80 {
  81     char *p;
  82     size_t size = strlen(s) + 1;
  83
  84     p = nasm_malloc(size);
  85     return memcpy(p, s, size);
  86 }
  87
  88 char *nasm_strndup(const char *s, size_t len)
  89 {
  90     char *p;
  91
  92     len = strnlen(s, len);
  93     p = nasm_malloc(len+1);
  94     p[len] = '\0';
  95     return memcpy(p, s, len);
  96 }
  97
  98 char *nasm_strcat(const char *one, const char *two)
  99 {
 100     char *rslt;
 101     size_t l1 = strlen(one);
 102     size_t l2 = strlen(two);
 103     rslt = nasm_malloc(l1 + l2 + 1);
 104     memcpy(rslt, one, l1);
 105     memcpy(rslt + l1, two, l2+1);
 106     return rslt;
 107 }