Link against newlib from esp-open-sdk's libcirom, replace FreeRTOS heap management.
Compiles and runs, expects xtensa lock.c patch in newlib (will still run otherwise but malloc/free and other functions will be non-memory-safe...)
This commit is contained in:
parent
1b0124cf05
commit
49268a33e1
5 changed files with 89 additions and 453 deletions
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@ -1,387 +0,0 @@
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|||
/*
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||||
FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.
|
||||
|
||||
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
|
||||
|
||||
***************************************************************************
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||||
* *
|
||||
* FreeRTOS provides completely free yet professionally developed, *
|
||||
* robust, strictly quality controlled, supported, and cross *
|
||||
* platform software that has become a de facto standard. *
|
||||
* *
|
||||
* Help yourself get started quickly and support the FreeRTOS *
|
||||
* project by purchasing a FreeRTOS tutorial book, reference *
|
||||
* manual, or both from: http://www.FreeRTOS.org/Documentation *
|
||||
* *
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||||
* Thank you! *
|
||||
* *
|
||||
***************************************************************************
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||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
|
||||
|
||||
>>! NOTE: The modification to the GPL is included to allow you to distribute
|
||||
>>! a combined work that includes FreeRTOS without being obliged to provide
|
||||
>>! the source code for proprietary components outside of the FreeRTOS
|
||||
>>! kernel.
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||||
|
||||
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
|
||||
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||||
FOR A PARTICULAR PURPOSE. Full license text is available from the following
|
||||
link: http://www.freertos.org/a00114.html
|
||||
|
||||
1 tab == 4 spaces!
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||||
|
||||
***************************************************************************
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||||
* *
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||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong?" *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
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||||
***************************************************************************
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
|
||||
license and Real Time Engineers Ltd. contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
|
||||
compatible FAT file system, and our tiny thread aware UDP/IP stack.
|
||||
|
||||
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
|
||||
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
|
||||
licenses offer ticketed support, indemnification and middleware.
|
||||
|
||||
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
|
||||
engineered and independently SIL3 certified version for use in safety and
|
||||
mission critical applications that require provable dependability.
|
||||
|
||||
1 tab == 4 spaces!
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||||
*/
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||||
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/*
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* A sample implementation of pvPortMalloc() and vPortFree() that combines
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* (coalescences) adjacent memory blocks as they are freed, and in so doing
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* limits memory fragmentation.
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*
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* See heap_1.c, heap_2.c and heap_3.c for alternative implementations, and the
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* memory management pages of http://www.FreeRTOS.org for more information.
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*/
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#include <stdlib.h>
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/* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining
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all the API functions to use the MPU wrappers. That should only be done when
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task.h is included from an application file. */
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#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE
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#include "FreeRTOS.h"
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#include "task.h"
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#undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE
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/* Block sizes must not get too small. */
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#define heapMINIMUM_BLOCK_SIZE ( ( size_t ) ( heapSTRUCT_SIZE * 2 ) )
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/* Assumes 8bit bytes! */
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#define heapBITS_PER_BYTE ( ( size_t ) 8 )
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/* A few bytes might be lost to byte aligning the heap start address. */
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#define heapADJUSTED_HEAP_SIZE ( configTOTAL_HEAP_SIZE - portBYTE_ALIGNMENT )
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/* Allocate the memory for the heap. */
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static unsigned char ucHeap[ configTOTAL_HEAP_SIZE ];
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/* Define the linked list structure. This is used to link free blocks in order
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of their memory address. */
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typedef struct A_BLOCK_LINK
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{
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struct A_BLOCK_LINK *pxNextFreeBlock; /*<< The next free block in the list. */
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size_t xBlockSize; /*<< The size of the free block. */
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} xBlockLink;
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/*-----------------------------------------------------------*/
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/*
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* Inserts a block of memory that is being freed into the correct position in
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* the list of free memory blocks. The block being freed will be merged with
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* the block in front it and/or the block behind it if the memory blocks are
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* adjacent to each other.
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*/
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static void prvInsertBlockIntoFreeList( xBlockLink *pxBlockToInsert );
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/*
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* Called automatically to setup the required heap structures the first time
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* pvPortMalloc() is called.
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*/
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static void prvHeapInit( void );
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/*-----------------------------------------------------------*/
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/* The size of the structure placed at the beginning of each allocated memory
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block must by correctly byte aligned. */
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static const unsigned short heapSTRUCT_SIZE = ( ( sizeof ( xBlockLink ) + ( portBYTE_ALIGNMENT - 1 ) ) & ~portBYTE_ALIGNMENT_MASK );
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/* Ensure the pxEnd pointer will end up on the correct byte alignment. */
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static const size_t xTotalHeapSize = ( ( size_t ) heapADJUSTED_HEAP_SIZE ) & ( ( size_t ) ~portBYTE_ALIGNMENT_MASK );
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/* Create a couple of list links to mark the start and end of the list. */
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static xBlockLink xStart, *pxEnd = NULL;
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/* Keeps track of the number of free bytes remaining, but says nothing about
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fragmentation. */
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static size_t xFreeBytesRemaining = ( ( size_t ) heapADJUSTED_HEAP_SIZE ) & ( ( size_t ) ~portBYTE_ALIGNMENT_MASK );
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/* Gets set to the top bit of an size_t type. When this bit in the xBlockSize
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member of an xBlockLink structure is set then the block belongs to the
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application. When the bit is free the block is still part of the free heap
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space. */
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static size_t xBlockAllocatedBit = 0;
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/*-----------------------------------------------------------*/
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void *pvPortMalloc( size_t xWantedSize )
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{
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xBlockLink *pxBlock, *pxPreviousBlock, *pxNewBlockLink;
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void *pvReturn = NULL;
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vTaskSuspendAll();
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{
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/* If this is the first call to malloc then the heap will require
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initialisation to setup the list of free blocks. */
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if( pxEnd == NULL )
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{
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prvHeapInit();
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}
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/* Check the requested block size is not so large that the top bit is
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set. The top bit of the block size member of the xBlockLink structure
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is used to determine who owns the block - the application or the
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kernel, so it must be free. */
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if( ( xWantedSize & xBlockAllocatedBit ) == 0 )
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{
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/* The wanted size is increased so it can contain a xBlockLink
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structure in addition to the requested amount of bytes. */
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if( xWantedSize > 0 )
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{
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xWantedSize += heapSTRUCT_SIZE;
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/* Ensure that blocks are always aligned to the required number
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of bytes. */
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if( ( xWantedSize & portBYTE_ALIGNMENT_MASK ) != 0x00 )
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{
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/* Byte alignment required. */
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xWantedSize += ( portBYTE_ALIGNMENT - ( xWantedSize & portBYTE_ALIGNMENT_MASK ) );
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}
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}
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if( ( xWantedSize > 0 ) && ( xWantedSize <= xFreeBytesRemaining ) )
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{
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/* Traverse the list from the start (lowest address) block until
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one of adequate size is found. */
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pxPreviousBlock = &xStart;
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pxBlock = xStart.pxNextFreeBlock;
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while( ( pxBlock->xBlockSize < xWantedSize ) && ( pxBlock->pxNextFreeBlock != NULL ) )
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{
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pxPreviousBlock = pxBlock;
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pxBlock = pxBlock->pxNextFreeBlock;
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}
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/* If the end marker was reached then a block of adequate size
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was not found. */
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if( pxBlock != pxEnd )
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{
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/* Return the memory space pointed to - jumping over the
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xBlockLink structure at its start. */
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pvReturn = ( void * ) ( ( ( unsigned char * ) pxPreviousBlock->pxNextFreeBlock ) + heapSTRUCT_SIZE );
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/* This block is being returned for use so must be taken out
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of the list of free blocks. */
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pxPreviousBlock->pxNextFreeBlock = pxBlock->pxNextFreeBlock;
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/* If the block is larger than required it can be split into
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two. */
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if( ( pxBlock->xBlockSize - xWantedSize ) > heapMINIMUM_BLOCK_SIZE )
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{
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/* This block is to be split into two. Create a new
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block following the number of bytes requested. The void
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cast is used to prevent byte alignment warnings from the
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compiler. */
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pxNewBlockLink = ( void * ) ( ( ( unsigned char * ) pxBlock ) + xWantedSize );
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/* Calculate the sizes of two blocks split from the
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single block. */
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pxNewBlockLink->xBlockSize = pxBlock->xBlockSize - xWantedSize;
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pxBlock->xBlockSize = xWantedSize;
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/* Insert the new block into the list of free blocks. */
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prvInsertBlockIntoFreeList( ( pxNewBlockLink ) );
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}
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xFreeBytesRemaining -= pxBlock->xBlockSize;
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/* The block is being returned - it is allocated and owned
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by the application and has no "next" block. */
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pxBlock->xBlockSize |= xBlockAllocatedBit;
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pxBlock->pxNextFreeBlock = NULL;
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}
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}
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}
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}
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xTaskResumeAll();
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#if( configUSE_MALLOC_FAILED_HOOK == 1 )
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{
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if( pvReturn == NULL )
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{
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extern void vApplicationMallocFailedHook( void );
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vApplicationMallocFailedHook();
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}
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}
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#endif
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return pvReturn;
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}
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/*-----------------------------------------------------------*/
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void vPortFree( void *pv )
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{
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unsigned char *puc = ( unsigned char * ) pv;
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xBlockLink *pxLink;
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if( pv != NULL )
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{
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/* The memory being freed will have an xBlockLink structure immediately
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before it. */
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puc -= heapSTRUCT_SIZE;
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/* This casting is to keep the compiler from issuing warnings. */
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pxLink = ( void * ) puc;
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/* Check the block is actually allocated. */
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configASSERT( ( pxLink->xBlockSize & xBlockAllocatedBit ) != 0 );
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configASSERT( pxLink->pxNextFreeBlock == NULL );
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if( ( pxLink->xBlockSize & xBlockAllocatedBit ) != 0 )
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{
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if( pxLink->pxNextFreeBlock == NULL )
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{
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/* The block is being returned to the heap - it is no longer
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allocated. */
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pxLink->xBlockSize &= ~xBlockAllocatedBit;
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vTaskSuspendAll();
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{
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/* Add this block to the list of free blocks. */
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xFreeBytesRemaining += pxLink->xBlockSize;
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prvInsertBlockIntoFreeList( ( ( xBlockLink * ) pxLink ) );
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}
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xTaskResumeAll();
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}
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}
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}
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}
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/*-----------------------------------------------------------*/
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size_t xPortGetFreeHeapSize( void )
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{
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return xFreeBytesRemaining;
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}
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/*-----------------------------------------------------------*/
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void vPortInitialiseBlocks( void )
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{
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/* This just exists to keep the linker quiet. */
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}
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/*-----------------------------------------------------------*/
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static void prvHeapInit( void )
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{
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xBlockLink *pxFirstFreeBlock;
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unsigned char *pucHeapEnd, *pucAlignedHeap;
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/* Ensure the heap starts on a correctly aligned boundary. */
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pucAlignedHeap = ( unsigned char * ) ( ( ( portPOINTER_SIZE_TYPE ) &ucHeap[ portBYTE_ALIGNMENT ] ) & ( ( portPOINTER_SIZE_TYPE ) ~portBYTE_ALIGNMENT_MASK ) );
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/* xStart is used to hold a pointer to the first item in the list of free
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blocks. The void cast is used to prevent compiler warnings. */
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xStart.pxNextFreeBlock = ( void * ) pucAlignedHeap;
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xStart.xBlockSize = ( size_t ) 0;
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/* pxEnd is used to mark the end of the list of free blocks and is inserted
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at the end of the heap space. */
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pucHeapEnd = pucAlignedHeap + xTotalHeapSize;
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pucHeapEnd -= heapSTRUCT_SIZE;
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pxEnd = ( void * ) pucHeapEnd;
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configASSERT( ( ( ( unsigned long ) pxEnd ) & ( ( unsigned long ) portBYTE_ALIGNMENT_MASK ) ) == 0UL );
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pxEnd->xBlockSize = 0;
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pxEnd->pxNextFreeBlock = NULL;
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/* To start with there is a single free block that is sized to take up the
|
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entire heap space, minus the space taken by pxEnd. */
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pxFirstFreeBlock = ( void * ) pucAlignedHeap;
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pxFirstFreeBlock->xBlockSize = xTotalHeapSize - heapSTRUCT_SIZE;
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pxFirstFreeBlock->pxNextFreeBlock = pxEnd;
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/* The heap now contains pxEnd. */
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xFreeBytesRemaining -= heapSTRUCT_SIZE;
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/* Work out the position of the top bit in a size_t variable. */
|
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xBlockAllocatedBit = ( ( size_t ) 1 ) << ( ( sizeof( size_t ) * heapBITS_PER_BYTE ) - 1 );
|
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}
|
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/*-----------------------------------------------------------*/
|
||||
|
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static void prvInsertBlockIntoFreeList( xBlockLink *pxBlockToInsert )
|
||||
{
|
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xBlockLink *pxIterator;
|
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unsigned char *puc;
|
||||
|
||||
/* Iterate through the list until a block is found that has a higher address
|
||||
than the block being inserted. */
|
||||
for( pxIterator = &xStart; pxIterator->pxNextFreeBlock < pxBlockToInsert; pxIterator = pxIterator->pxNextFreeBlock )
|
||||
{
|
||||
/* Nothing to do here, just iterate to the right position. */
|
||||
}
|
||||
|
||||
/* Do the block being inserted, and the block it is being inserted after
|
||||
make a contiguous block of memory? */
|
||||
puc = ( unsigned char * ) pxIterator;
|
||||
if( ( puc + pxIterator->xBlockSize ) == ( unsigned char * ) pxBlockToInsert )
|
||||
{
|
||||
pxIterator->xBlockSize += pxBlockToInsert->xBlockSize;
|
||||
pxBlockToInsert = pxIterator;
|
||||
}
|
||||
|
||||
/* Do the block being inserted, and the block it is being inserted before
|
||||
make a contiguous block of memory? */
|
||||
puc = ( unsigned char * ) pxBlockToInsert;
|
||||
if( ( puc + pxBlockToInsert->xBlockSize ) == ( unsigned char * ) pxIterator->pxNextFreeBlock )
|
||||
{
|
||||
if( pxIterator->pxNextFreeBlock != pxEnd )
|
||||
{
|
||||
/* Form one big block from the two blocks. */
|
||||
pxBlockToInsert->xBlockSize += pxIterator->pxNextFreeBlock->xBlockSize;
|
||||
pxBlockToInsert->pxNextFreeBlock = pxIterator->pxNextFreeBlock->pxNextFreeBlock;
|
||||
}
|
||||
else
|
||||
{
|
||||
pxBlockToInsert->pxNextFreeBlock = pxEnd;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
pxBlockToInsert->pxNextFreeBlock = pxIterator->pxNextFreeBlock;
|
||||
}
|
||||
|
||||
/* If the block being inserted plugged a gab, so was merged with the block
|
||||
before and the block after, then it's pxNextFreeBlock pointer will have
|
||||
already been set, and should not be set here as that would make it point
|
||||
to itself. */
|
||||
if( pxIterator != pxBlockToInsert )
|
||||
{
|
||||
pxIterator->pxNextFreeBlock = pxBlockToInsert;
|
||||
}
|
||||
}
|
||||
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* Stub functions called by binary espressif libraries
|
||||
* Wrappers for functions called by binary espressif libraries
|
||||
*
|
||||
* Part of esp-open-rtos
|
||||
* Copyright (C) 2015 Superhouse Automation Pty Ltd
|
||||
|
@ -9,69 +9,6 @@
|
|||
#include <string.h>
|
||||
#include "FreeRTOS.h"
|
||||
|
||||
/* SDK uses errno. errno was defined in libudhcp.a
|
||||
but that library has been removed. */
|
||||
int errno;
|
||||
|
||||
/* newlib uses __errno in some contexts */
|
||||
int *__errno(void) {
|
||||
return &errno;
|
||||
}
|
||||
|
||||
/* libc memory management functions.
|
||||
|
||||
Many of these are linked from the RTOS SDK blob libraries.
|
||||
|
||||
In esp_iot_rtos_sdk these are aliased to exception-safe versions of
|
||||
the FreeRTOS functions. I think the rationale is that they're
|
||||
sometimes called in exception contexts (ESPTODO: Verify this).
|
||||
|
||||
For now these are exception-safe wrappers to the FreeRTOS versions.
|
||||
*/
|
||||
|
||||
void *malloc(size_t nbytes) {
|
||||
void *res;
|
||||
portENTER_CRITICAL();
|
||||
res = pvPortMalloc(nbytes);
|
||||
portEXIT_CRITICAL();
|
||||
return res;
|
||||
}
|
||||
|
||||
void *calloc(size_t count, size_t size) {
|
||||
void *res;
|
||||
size_t nbytes = count * size;
|
||||
portENTER_CRITICAL();
|
||||
res = pvPortMalloc(nbytes);
|
||||
portEXIT_CRITICAL();
|
||||
if(res) {
|
||||
memset(res, 0, nbytes);
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
void *zalloc(size_t nbytes) {
|
||||
return calloc(1, nbytes);
|
||||
}
|
||||
|
||||
void *realloc(void *old, size_t newsize) {
|
||||
void *new;
|
||||
portENTER_CRITICAL();
|
||||
if(newsize == 0) {
|
||||
vPortFree(old);
|
||||
return 0;
|
||||
}
|
||||
/* realloc implementation borrowed from esp_iot_rtos_sdk, could be better I think */
|
||||
new = pvPortMalloc(newsize);
|
||||
if (new) {
|
||||
memcpy(new, old, newsize);
|
||||
vPortFree(old);
|
||||
}
|
||||
portEXIT_CRITICAL();
|
||||
return new;
|
||||
}
|
||||
|
||||
void free(void *ptr) {
|
||||
portENTER_CRITICAL();
|
||||
vPortFree(ptr);
|
||||
portEXIT_CRITICAL();
|
||||
}
|
||||
|
|
|
@ -5,5 +5,5 @@ INC_DIRS += $(freertos_MAIN)/include $(freertos_MAIN)/portable/esp8266
|
|||
freertos_ROOT = $(ROOT)FreeRTOS/
|
||||
freertos_MAIN = $(freertos_ROOT)Source/
|
||||
freertos_INC_DIR = $(freertos_MAIN)include $(freertos_MAIN)portable/esp8266
|
||||
freertos_SRC_DIR = $(freertos_MAIN) $(freertos_MAIN)portable/MemMang $(freertos_MAIN)portable/esp8266
|
||||
freertos_SRC_DIR = $(freertos_MAIN) $(freertos_MAIN)portable/esp8266
|
||||
$(eval $(call component_compile_rules,freertos))
|
||||
|
|
71
core/newlib_syscalls.c
Normal file
71
core/newlib_syscalls.c
Normal file
|
@ -0,0 +1,71 @@
|
|||
/* newlib_syscalls.c - newlib syscalls for ESP8266
|
||||
*
|
||||
* Part of esp-open-rtos
|
||||
* Copyright (C) 2105 Superhouse Automation Pty Ltd
|
||||
* BSD Licensed as described in the file LICENSE
|
||||
*/
|
||||
#include <sys/reent.h>
|
||||
#include <sys/types.h>
|
||||
#include <espressif/sdk_private.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
caddr_t _sbrk_r (struct _reent *r, int incr)
|
||||
{
|
||||
extern char _heap_start; /* linker script defined */
|
||||
static char * heap_end;
|
||||
char * prev_heap_end;
|
||||
|
||||
if (heap_end == NULL)
|
||||
heap_end = &_heap_start;
|
||||
prev_heap_end = heap_end;
|
||||
/* TODO: Check stack collision
|
||||
if (heap_end + incr > stack_ptr)
|
||||
{
|
||||
_write (1, "_sbrk: Heap collided with stack\n", 32);
|
||||
while(1) {}
|
||||
}
|
||||
*/
|
||||
heap_end += incr;
|
||||
|
||||
return (caddr_t) prev_heap_end;
|
||||
}
|
||||
|
||||
/* syscall implementation for stdio write to UART
|
||||
|
||||
at the moment UART functionality is all still in the binary SDK
|
||||
*/
|
||||
long _write_r(struct _reent *r, int fd, const char *ptr, int len )
|
||||
{
|
||||
for(int i = 0; i < len; i++)
|
||||
sdk_os_putc(ptr[i]);
|
||||
return len;
|
||||
}
|
||||
|
||||
/* syscall implementation for stdio read from UART
|
||||
|
||||
at the moment UART functionality is all still in the binary SDK
|
||||
*/
|
||||
long _read_r( struct _reent *r, int fd, char *ptr, int len )
|
||||
{
|
||||
for(int i = 0; i < len; i++)
|
||||
ptr[i] = sdk_uart_rx_one_char();
|
||||
return len;
|
||||
}
|
||||
|
||||
/* These are stub implementations for the reentrant syscalls that
|
||||
* newlib is configured to expect */
|
||||
int _fstat_r(struct _reent *r, int fd, void *buf)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
int _close_r(struct _reent *r, int fd)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
off_t _lseek_r(struct _reent *r, int fd, off_t offset, int whence)
|
||||
{
|
||||
return (off_t)-1;
|
||||
}
|
||||
|
|
@ -3,6 +3,21 @@
|
|||
Modified for esp open RTOS, this linker script is no longer the same as the esp_iot_rtos_sdk one.
|
||||
*/
|
||||
|
||||
/* FreeRTOS memory management functions
|
||||
|
||||
We link these directly to newlib functions (have to do it at link
|
||||
time as binary libraries use these symbols too.)
|
||||
*/
|
||||
pvPortMalloc = malloc;
|
||||
vPortFree = free;
|
||||
|
||||
_lock_acquire = vPortEnterCritical;
|
||||
_lock_acquire_recursive = vPortEnterCritical;
|
||||
_lock_try_acquire = vPortEnterCritical;
|
||||
_lock_try_acquire_recursive = vPortEnterCritical;
|
||||
_lock_release = vPortExitCritical;
|
||||
_lock_release_recursive = vPortExitCritical;
|
||||
|
||||
/* Linker Script for ld -N */
|
||||
MEMORY
|
||||
{
|
||||
|
@ -156,7 +171,7 @@ SECTIONS
|
|||
*(COMMON)
|
||||
. = ALIGN (8);
|
||||
_bss_end = ABSOLUTE(.);
|
||||
_heap_start = ABSOLUTE(.); /* ESPTODO: Remove this symbol */
|
||||
_heap_start = ABSOLUTE(.);
|
||||
/* _stack_sentry = ALIGN(0x8); */
|
||||
} >dram0_0_seg :dram0_0_bss_phdr
|
||||
/* __stack = 0x3ffc8000; */
|
||||
|
|
Loading…
Reference in a new issue