1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28 
  29 #include <libdisasm.h>
  30 #include <stdlib.h>
  31 #ifdef DIS_STANDALONE
  32 #include <mdb/mdb_modapi.h>
  33 #endif
  34 
  35 static int _dis_errno;
  36 
  37 /*
  38  * For the standalone library, we need to link against mdb's malloc/free.
  39  * Otherwise, use the standard malloc/free.
  40  */
  41 #ifdef DIS_STANDALONE
  42 void *
  43 dis_zalloc(size_t bytes)
  44 {
  45         return (mdb_zalloc(bytes, UM_SLEEP));
  46 }
  47 
  48 void
  49 dis_free(void *ptr, size_t bytes)
  50 {
  51         mdb_free(ptr, bytes);
  52 }
  53 #else
  54 void *
  55 dis_zalloc(size_t bytes)
  56 {
  57         return (calloc(1, bytes));
  58 }
  59 
  60 /*ARGSUSED*/
  61 void
  62 dis_free(void *ptr, size_t bytes)
  63 {
  64         free(ptr);
  65 }
  66 #endif
  67 
  68 int
  69 dis_seterrno(int error)
  70 {
  71         _dis_errno = error;
  72         return (-1);
  73 }
  74 
  75 int
  76 dis_errno(void)
  77 {
  78         return (_dis_errno);
  79 }
  80 
  81 const char *
  82 dis_strerror(int error)
  83 {
  84         switch (error) {
  85         case E_DIS_NOMEM:
  86                 return ("out of memory");
  87         case E_DIS_INVALFLAG:
  88                 return ("invalid flags for this architecture");
  89         default:
  90                 return ("unknown error");
  91         }
  92 }