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 #include "error.h"
  44
  45 void *nasm_malloc(size_t size)
  46 {
  47     void *p = malloc(size);
  48     if (!p)
  49         nasm_fatal(ERR_NOFILE, "out of memory");
  50     return p;
  51 }
  52
  53 void *nasm_calloc(size_t size, size_t nelem)
  54 {
  55     void *p = calloc(size, nelem);
  56     if (!p)
  57         nasm_fatal(ERR_NOFILE, "out of memory");
  58     return p;
  59 }
  60
  61 void *nasm_zalloc(size_t size)
  62 {
  63     return nasm_calloc(size, 1);
  64 }
  65
  66 void *nasm_realloc(void *q, size_t size)
  67 {
  68     void *p = q ? realloc(q, size) : malloc(size);
  69     if (!p)
  70         nasm_fatal(ERR_NOFILE, "out of memory");
  71     return p;
  72 }
  73
  74 void nasm_free(void *q)
  75 {
  76     if (q)
  77         free(q);
  78 }
  79
  80 char *nasm_strdup(const char *s)
  81 {
  82     char *p;
  83     size_t size = strlen(s) + 1;
  84
  85     p = nasm_malloc(size);
  86     return memcpy(p, s, size);
  87 }
  88
  89 char *nasm_strndup(const char *s, size_t len)
  90 {
  91     char *p;
  92
  93     len = strnlen(s, len);
  94     p = nasm_malloc(len+1);
  95     p[len] = '\0';
  96     return memcpy(p, s, len);
  97 }
  98
  99 char *nasm_strcat(const char *one, const char *two)
 100 {
 101     char *rslt;
 102     size_t l1 = strlen(one);
 103     size_t l2 = strlen(two);
 104     rslt = nasm_malloc(l1 + l2 + 1);
 105     memcpy(rslt, one, l1);
 106     memcpy(rslt + l1, two, l2+1);
 107     return rslt;
 108 }