aboutsummaryrefslogtreecommitdiff
path: root/stm32f091/esp/Src/sysmem.c
diff options
context:
space:
mode:
Diffstat (limited to 'stm32f091/esp/Src/sysmem.c')
-rw-r--r--stm32f091/esp/Src/sysmem.c79
1 files changed, 0 insertions, 79 deletions
diff --git a/stm32f091/esp/Src/sysmem.c b/stm32f091/esp/Src/sysmem.c
deleted file mode 100644
index 54081ac..0000000
--- a/stm32f091/esp/Src/sysmem.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/**
- ******************************************************************************
- * @file sysmem.c
- * @author Generated by STM32CubeIDE
- * @brief STM32CubeIDE System Memory calls file
- *
- * For more information about which C functions
- * need which of these lowlevel functions
- * please consult the newlib libc manual
- ******************************************************************************
- * @attention
- *
- * Copyright (c) 2022 STMicroelectronics.
- * All rights reserved.
- *
- * This software is licensed under terms that can be found in the LICENSE file
- * in the root directory of this software component.
- * If no LICENSE file comes with this software, it is provided AS-IS.
- *
- ******************************************************************************
- */
-
-/* Includes */
-#include <errno.h>
-#include <stdint.h>
-
-/**
- * Pointer to the current high watermark of the heap usage
- */
-static uint8_t *__sbrk_heap_end = NULL;
-
-/**
- * @brief _sbrk() allocates memory to the newlib heap and is used by malloc
- * and others from the C library
- *
- * @verbatim
- * ############################################################################
- * # .data # .bss # newlib heap # MSP stack #
- * # # # # Reserved by _Min_Stack_Size #
- * ############################################################################
- * ^-- RAM start ^-- _end _estack, RAM end --^
- * @endverbatim
- *
- * This implementation starts allocating at the '_end' linker symbol
- * The '_Min_Stack_Size' linker symbol reserves a memory for the MSP stack
- * The implementation considers '_estack' linker symbol to be RAM end
- * NOTE: If the MSP stack, at any point during execution, grows larger than the
- * reserved size, please increase the '_Min_Stack_Size'.
- *
- * @param incr Memory size
- * @return Pointer to allocated memory
- */
-void *_sbrk(ptrdiff_t incr)
-{
- extern uint8_t _end; /* Symbol defined in the linker script */
- extern uint8_t _estack; /* Symbol defined in the linker script */
- extern uint32_t _Min_Stack_Size; /* Symbol defined in the linker script */
- const uint32_t stack_limit = (uint32_t)&_estack - (uint32_t)&_Min_Stack_Size;
- const uint8_t *max_heap = (uint8_t *)stack_limit;
- uint8_t *prev_heap_end;
-
- /* Initialize heap end at first call */
- if (NULL == __sbrk_heap_end)
- {
- __sbrk_heap_end = &_end;
- }
-
- /* Protect heap from growing into the reserved MSP stack */
- if (__sbrk_heap_end + incr > max_heap)
- {
- errno = ENOMEM;
- return (void *)-1;
- }
-
- prev_heap_end = __sbrk_heap_end;
- __sbrk_heap_end += incr;
-
- return (void *)prev_heap_end;
-}