usr/src/boot/lib/libstand/zalloc_defs.h

   1 /*
   2  * This module derived from code donated to the FreeBSD Project by
   3  * Matthew Dillon <dillon@backplane.com>
   4  *
   5  * Copyright (c) 1998 The FreeBSD Project
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * $FreeBSD$
  30  */
  31
  32 /*
  33  * DEFS.H
  34  */
  35
  36 #define USEGUARD                /* use stard/end guard bytes */
  37 #define USEENDGUARD
  38 #define DMALLOCDEBUG            /* add debugging code to gather stats */
  39 #define ZALLOCDEBUG
  40
  41 #include <sys/stdint.h>
  42 #include "stand.h"
  43 #include "zalloc_mem.h"
  44
  45 #define Library extern
  46
  47 /*
  48  * block extension for sbrk()
  49  */
  50
  51 #define BLKEXTEND       (4 * 1024)
  52 #define BLKEXTENDMASK   (BLKEXTEND - 1)
  53
  54 /*
  55  * Required malloc alignment.
  56  *
  57  * Embedded platforms using the u-boot API drivers require that all I/O buffers
  58  * be on a cache line sized boundary.  The worst case size for that is 64 bytes.
  59  * For other platforms, 16 bytes works fine.  The alignment also must be at
  60  * least sizeof(struct MemNode); this is asserted in zalloc.c.
  61  */
  62
  63 #if defined(__arm__) || defined(__mips__) || defined(__powerpc__)
  64 #define MALLOCALIGN             64
  65 #else
  66 #define MALLOCALIGN             16
  67 #endif
  68 #define MALLOCALIGN_MASK        (MALLOCALIGN - 1)
  69
  70 typedef struct Guard {
  71     size_t      ga_Bytes;
  72     size_t      ga_Magic;       /* must be at least 32 bits */
  73 } Guard;
  74
  75 #define GAMAGIC         0x55FF44FD
  76 #define GAFREE          0x5F54F4DF
  77
  78 #include "zalloc_protos.h"