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/*
* FreeRTOS Kernel <DEVELOPMENT BRANCH>
* Copyright (C) 2015-2019 Cadence Design Systems, Inc.
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
*/
#include "FreeRTOS.h"
#if XT_USE_THREAD_SAFE_CLIB
#if XSHAL_CLIB == XTHAL_CLIB_XCLIB
#include <errno.h>
#include <sys/reent.h>
#include "semphr.h"
typedef SemaphoreHandle_t _Rmtx;
//-----------------------------------------------------------------------------
// Override this and set to nonzero to enable locking.
//-----------------------------------------------------------------------------
int32_t _xclib_use_mt = 1;
//-----------------------------------------------------------------------------
// Init lock.
//-----------------------------------------------------------------------------
void
_Mtxinit(_Rmtx * mtx)
{
*mtx = xSemaphoreCreateRecursiveMutex();
}
//-----------------------------------------------------------------------------
// Destroy lock.
//-----------------------------------------------------------------------------
void
_Mtxdst(_Rmtx * mtx)
{
if ((mtx != NULL) && (*mtx != NULL)) {
vSemaphoreDelete(*mtx);
}
}
//-----------------------------------------------------------------------------
// Lock.
//-----------------------------------------------------------------------------
void
_Mtxlock(_Rmtx * mtx)
{
if ((mtx != NULL) && (*mtx != NULL)) {
xSemaphoreTakeRecursive(*mtx, portMAX_DELAY);
}
}
//-----------------------------------------------------------------------------
// Unlock.
//-----------------------------------------------------------------------------
void
_Mtxunlock(_Rmtx * mtx)
{
if ((mtx != NULL) && (*mtx != NULL)) {
xSemaphoreGiveRecursive(*mtx);
}
}
//-----------------------------------------------------------------------------
// Called by malloc() to allocate blocks of memory from the heap.
//-----------------------------------------------------------------------------
void *
_sbrk_r (struct _reent * reent, int32_t incr)
{
extern char _end;
extern char _heap_sentry;
static char * _heap_sentry_ptr = &_heap_sentry;
static char * heap_ptr;
char * base;
if (!heap_ptr)
heap_ptr = (char *) &_end;
base = heap_ptr;
if (heap_ptr + incr >= _heap_sentry_ptr) {
reent->_errno = ENOMEM;
return (char *) -1;
}
heap_ptr += incr;
return base;
}
//-----------------------------------------------------------------------------
// Global initialization for C library.
//-----------------------------------------------------------------------------
void
vPortClibInit(void)
{
}
//-----------------------------------------------------------------------------
// Per-thread cleanup stub provided for linking, does nothing.
//-----------------------------------------------------------------------------
void
_reclaim_reent(void * ptr)
{
}
#endif /* XSHAL_CLIB == XTHAL_CLIB_XCLIB */
#if XSHAL_CLIB == XTHAL_CLIB_NEWLIB
#include <errno.h>
#include <malloc.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "semphr.h"
static SemaphoreHandle_t xClibMutex;
static uint32_t ulClibInitDone = 0;
//-----------------------------------------------------------------------------
// Get C library lock.
//-----------------------------------------------------------------------------
void
__malloc_lock(struct _reent * ptr)
{
if (!ulClibInitDone)
return;
xSemaphoreTakeRecursive(xClibMutex, portMAX_DELAY);
}
//-----------------------------------------------------------------------------
// Release C library lock.
//-----------------------------------------------------------------------------
void
__malloc_unlock(struct _reent * ptr)
{
if (!ulClibInitDone)
return;
xSemaphoreGiveRecursive(xClibMutex);
}
//-----------------------------------------------------------------------------
// Lock for environment. Since we have only one global lock we can just call
// the malloc() lock function.
//-----------------------------------------------------------------------------
void
__env_lock(struct _reent * ptr)
{
__malloc_lock(ptr);
}
//-----------------------------------------------------------------------------
// Unlock environment.
//-----------------------------------------------------------------------------
void
__env_unlock(struct _reent * ptr)
{
__malloc_unlock(ptr);
}
//-----------------------------------------------------------------------------
// Called by malloc() to allocate blocks of memory from the heap.
//-----------------------------------------------------------------------------
void *
_sbrk_r (struct _reent * reent, int32_t incr)
{
extern char _end;
extern char _heap_sentry;
static char * _heap_sentry_ptr = &_heap_sentry;
static char * heap_ptr;
char * base;
if (!heap_ptr)
heap_ptr = (char *) &_end;
base = heap_ptr;
if (heap_ptr + incr >= _heap_sentry_ptr) {
reent->_errno = ENOMEM;
return (char *) -1;
}
heap_ptr += incr;
return base;
}
//-----------------------------------------------------------------------------
// Global initialization for C library.
//-----------------------------------------------------------------------------
void
vPortClibInit(void)
{
configASSERT(!ulClibInitDone);
xClibMutex = xSemaphoreCreateRecursiveMutex();
ulClibInitDone = 1;
}
#endif /* XSHAL_CLIB == XTHAL_CLIB_NEWLIB */
#endif /* XT_USE_THREAD_SAFE_CLIB */
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