diff options
Diffstat (limited to 'libraries/mbed/rtos/rtx/TARGET_CORTEX_M/rt_MemBox.c')
| -rw-r--r-- | libraries/mbed/rtos/rtx/TARGET_CORTEX_M/rt_MemBox.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/libraries/mbed/rtos/rtx/TARGET_CORTEX_M/rt_MemBox.c b/libraries/mbed/rtos/rtx/TARGET_CORTEX_M/rt_MemBox.c deleted file mode 100644 index 5b96ae0..0000000 --- a/libraries/mbed/rtos/rtx/TARGET_CORTEX_M/rt_MemBox.c +++ /dev/null @@ -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 - *---------------------------------------------------------------------------*/ - |