From 44f7d1e90427b2e2cdd69cd9a9cc094a02c5ea56 Mon Sep 17 00:00:00 2001 From: Dominik Sliwa Date: Mon, 27 Jun 2016 13:46:01 +0200 Subject: k20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commitk20_tester: Initial commit --- utilities/fsl_sbrk.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 utilities/fsl_sbrk.c (limited to 'utilities/fsl_sbrk.c') diff --git a/utilities/fsl_sbrk.c b/utilities/fsl_sbrk.c new file mode 100644 index 0000000..aae6b1e --- /dev/null +++ b/utilities/fsl_sbrk.c @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2015, Freescale Semiconductor, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * o Redistributions of source code must retain the above copyright notice, this list + * of conditions and the following disclaimer. + * + * o 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. + * + * o Neither the name of Freescale Semiconductor, Inc. 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 THE COPYRIGHT HOLDER OR 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. + */ +#if defined(__GNUC__) +#include +#include +#endif + +#if defined(__GNUC__) +/*! + * @brief Function to override ARMGCC default function _sbrk + * + * _sbrk is called by malloc. ARMGCC default _sbrk compares "SP" register and + * heap end, if heap end is larger than "SP", then _sbrk returns error and + * memory allocation failed. This function changes to compare __HeapLimit with + * heap end. + */ +caddr_t _sbrk(int incr) +{ + extern char end __asm("end"); + extern char heap_limit __asm("__HeapLimit"); + static char *heap_end; + char *prev_heap_end; + + if (heap_end == NULL) + heap_end = &end; + + prev_heap_end = heap_end; + + if (heap_end + incr > &heap_limit) + { + errno = ENOMEM; + return (caddr_t)-1; + } + + heap_end += incr; + + return (caddr_t)prev_heap_end; +} +#endif -- cgit v1.2.3