Diff: mbed-rtos/rtx/rt_MemBox.c

Revision:

9:58eb378727d9

Parent:

8:80d49dd91542

Child:

10:0b5e0dfee08e

--- a/mbed-rtos/rtx/rt_MemBox.c	Wed Oct 01 13:27:35 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,166 +0,0 @@
-/*----------------------------------------------------------------------------
- *      RL-ARM - RTX
- *----------------------------------------------------------------------------
- *      Name:    RT_MEMBOX.C
- *      Purpose: Interface functions for fixed memory block management system
- *      Rev.:    V4.60
- *----------------------------------------------------------------------------
- *
- * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
- * All rights reserved.
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *  - Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  - Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *  - Neither the name of ARM  nor the names of its contributors may be used 
- *    to endorse or promote products derived from this software without 
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *---------------------------------------------------------------------------*/
-
-#include "rt_TypeDef.h"
-#include "RTX_Conf.h"
-#include "rt_System.h"
-#include "rt_MemBox.h"
-#include "rt_HAL_CM.h"
-
-/*----------------------------------------------------------------------------
- *      Global Functions
- *---------------------------------------------------------------------------*/
-
-
-/*--------------------------- _init_box -------------------------------------*/
-
-int _init_box  (void *box_mem, U32 box_size, U32 blk_size) {
-  /* Initialize memory block system, returns 0 if OK, 1 if fails. */
-  void *end;
-  void *blk;
-  void *next;
-  U32  sizeof_bm;
-
-  /* Create memory structure. */
-  if (blk_size & BOX_ALIGN_8) {
-    /* Memory blocks 8-byte aligned. */ 
-    blk_size = ((blk_size & ~BOX_ALIGN_8) + 7) & ~7;
-    sizeof_bm = (sizeof (struct OS_BM) + 7) & ~7;
-  }
-  else {
-    /* Memory blocks 4-byte aligned. */
-    blk_size = (blk_size + 3) & ~3;
-    sizeof_bm = sizeof (struct OS_BM);
-  }
-  if (blk_size == 0) {
-    return (1);
-  }
-  if ((blk_size + sizeof_bm) > box_size) {
-    return (1);
-  }
-  /* Create a Memory structure. */
-  blk = ((U8 *) box_mem) + sizeof_bm;
-  ((P_BM) box_mem)->free = blk;
-  end = ((U8 *) box_mem) + box_size;
-  ((P_BM) box_mem)->end      = end;
-  ((P_BM) box_mem)->blk_size = blk_size;
-
-  /* Link all free blocks using offsets. */
-  end = ((U8 *) end) - blk_size;
-  while (1)  {
-    next = ((U8 *) blk) + blk_size;
-    if (next > end)  break;
-    *((void **)blk) = next;
-    blk = next;
-  }
-  /* end marker */
-  *((void **)blk) = 0;
-  return (0);
-}
-
-/*--------------------------- rt_alloc_box ----------------------------------*/
-
-void *rt_alloc_box (void *box_mem) {
-  /* Allocate a memory block and return start address. */
-  void **free;
-#ifndef __USE_EXCLUSIVE_ACCESS
-  int  irq_dis;
-
-  irq_dis = __disable_irq ();
-  free = ((P_BM) box_mem)->free;
-  if (free) {
-    ((P_BM) box_mem)->free = *free;
-  }
-  if (!irq_dis) __enable_irq ();
-#else
-  do {
-    if ((free = (void **)__ldrex(&((P_BM) box_mem)->free)) == 0) {
-      __clrex();
-      break;
-    }
-  } while (__strex((U32)*free, &((P_BM) box_mem)->free));
-#endif
-  return (free);
-}
-
-
-/*--------------------------- _calloc_box -----------------------------------*/
-
-void *_calloc_box (void *box_mem)  {
-  /* Allocate a 0-initialized memory block and return start address. */
-  void *free;
-  U32 *p;
-  U32 i;
-
-  free = _alloc_box (box_mem);
-  if (free)  {
-    p = free;
-    for (i = ((P_BM) box_mem)->blk_size; i; i -= 4)  {
-      *p = 0;
-      p++;
-    }
-  }
-  return (free);
-}
-
-
-/*--------------------------- rt_free_box -----------------------------------*/
-
-int rt_free_box (void *box_mem, void *box) {
-  /* Free a memory block, returns 0 if OK, 1 if box does not belong to box_mem */
-#ifndef __USE_EXCLUSIVE_ACCESS
-  int irq_dis;
-#endif
-
-  if (box < box_mem || box >= ((P_BM) box_mem)->end) {
-    return (1);
-  }
-
-#ifndef __USE_EXCLUSIVE_ACCESS
-  irq_dis = __disable_irq ();
-  *((void **)box) = ((P_BM) box_mem)->free;
-  ((P_BM) box_mem)->free = box;
-  if (!irq_dis) __enable_irq ();
-#else
-  do {
-    *((void **)box) = (void *)__ldrex(&((P_BM) box_mem)->free);
-  } while (__strex ((U32)box, &((P_BM) box_mem)->free));
-#endif
-  return (0);
-}
-
-/*----------------------------------------------------------------------------
- * end of file
- *---------------------------------------------------------------------------*/
-