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Igor-MisicIgor-Misic
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Add files syscall.c and sysmem.c
This files solve building warnings for newer compilers, for example, arm-none-eabi-gcc v13.3.1 or newer Warnings: warning: _close is not implemented and will always fail warning: _lseek is not implemented and will always fail warning: _read is not implemented and will always fail warning: _write is not implemented and will always fail
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‎Bootloader/STM32/Src/syscalls.c‎

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/**
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******************************************************************************
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* @file syscalls.c
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* @author Auto-generated by STM32CubeMX
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* @brief Minimal System calls file
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*
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* For more information about which c-functions
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* need which of these lowlevel functions
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* please consult the Newlib libc-manual
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2020-2024 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes */
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <stdio.h>
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#include <signal.h>
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#include <time.h>
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#include <sys/time.h>
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#include <sys/times.h>
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/* Variables */
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extern int __io_putchar(int ch) __attribute__((weak));
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extern int __io_getchar(void) __attribute__((weak));
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char* __env[1] = { 0 };
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char** environ = __env;
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/* Functions */
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void
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initialise_monitor_handles() {
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}
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int
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_getpid(void) {
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return 1;
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}
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int
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_kill(int pid, int sig) {
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(void)pid;
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(void)sig;
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errno = EINVAL;
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return -1;
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}
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void
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_exit (int status) {
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_kill(status, -1);
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while (1) {} /* Make sure we hang here */
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}
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__attribute__((weak)) int _read(int file, char* ptr, int len) {
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(void)file;
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int DataIdx;
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for (DataIdx = 0; DataIdx < len; DataIdx++) {
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*ptr++ = __io_getchar();
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}
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return len;
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}
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__attribute__((weak)) int _write(int file, char* ptr, int len) {
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(void)file;
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int DataIdx;
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for (DataIdx = 0; DataIdx < len; DataIdx++) {
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__io_putchar(*ptr++);
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}
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return len;
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}
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int
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_close(int file) {
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(void)file;
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return -1;
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}
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int
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_fstat(int file, struct stat* st) {
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(void)file;
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st->st_mode = S_IFCHR;
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return 0;
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}
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int
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_isatty(int file) {
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(void)file;
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return 1;
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}
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int
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_lseek(int file, int ptr, int dir) {
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(void)file;
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(void)ptr;
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(void)dir;
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return 0;
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}
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int
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_open(char* path, int flags, ...) {
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(void)path;
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(void)flags;
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/* Pretend like we always fail */
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return -1;
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}
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int
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_wait(int* status) {
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(void)status;
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errno = ECHILD;
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return -1;
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}
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int
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_unlink(char* name) {
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(void)name;
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errno = ENOENT;
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return -1;
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}
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int
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_times(struct tms* buf) {
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(void)buf;
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return -1;
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}
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int
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_stat(char* file, struct stat* st) {
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(void)file;
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st->st_mode = S_IFCHR;
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return 0;
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}
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int
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_link(char* old, char* new) {
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(void)old;
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(void)new;
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errno = EMLINK;
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return -1;
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}
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int
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_fork(void) {
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errno = EAGAIN;
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return -1;
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}
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int
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_execve(char* name, char** argv, char** env) {
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(void)name;
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(void)argv;
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(void)env;
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errno = ENOMEM;
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return -1;
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}

‎Bootloader/STM32/Src/sysmem.c‎

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/**
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******************************************************************************
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* @file sysmem.c
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* @author Generated by STM32CubeMX
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* @brief System Memory calls file
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*
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* For more information about which C functions
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* need which of these lowlevel functions
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* please consult the newlib libc manual
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2024 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes */
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#include <errno.h>
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#include <stdint.h>
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/**
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* Pointer to the current high watermark of the heap usage
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*/
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static uint8_t* __sbrk_heap_end = NULL;
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/**
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* @brief _sbrk() allocates memory to the newlib heap and is used by malloc
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* and others from the C library
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*
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* @verbatim
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* ############################################################################
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* # .data # .bss # newlib heap # MSP stack #
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* # # # # Reserved by _Min_Stack_Size #
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* ############################################################################
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* ^-- RAM start ^-- _end _estack, RAM end --^
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* @endverbatim
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*
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* This implementation starts allocating at the '_end' linker symbol
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* The '_Min_Stack_Size' linker symbol reserves a memory for the MSP stack
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* The implementation considers '_estack' linker symbol to be RAM end
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* NOTE: If the MSP stack, at any point during execution, grows larger than the
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* reserved size, please increase the '_Min_Stack_Size'.
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*
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* @param incr Memory size
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* @return Pointer to allocated memory
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*/
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void*
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_sbrk(ptrdiff_t incr) {
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extern uint8_t _end; /* Symbol defined in the linker script */
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extern uint8_t _estack; /* Symbol defined in the linker script */
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extern uint32_t _Min_Stack_Size; /* Symbol defined in the linker script */
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const uint32_t stack_limit = (uint32_t)&_estack - (uint32_t)&_Min_Stack_Size;
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const uint8_t* max_heap = (uint8_t*)stack_limit;
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uint8_t* prev_heap_end;
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/* Initialize heap end at first call */
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if (NULL == __sbrk_heap_end) {
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__sbrk_heap_end = &_end;
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}
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/* Protect heap from growing into the reserved MSP stack */
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if (__sbrk_heap_end + incr > max_heap) {
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errno = ENOMEM;
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return (void*) -1;
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}
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prev_heap_end = __sbrk_heap_end;
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__sbrk_heap_end += incr;
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return (void*)prev_heap_end;
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}

‎Makefile‎

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@@ -36,6 +36,8 @@ Bootloader/Adapters/Src/security_adapter.c \
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Bootloader/Adapters/Src/system_adapter.c \
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Bootloader/Adapters/Src/system_clock_adapter.c \
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Bootloader/Library/Src/software_info.c \
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Bootloader/STM32/Src/syscalls.c \
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Bootloader/STM32/Src/sysmem.c \
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Bootloader/Utility/Src/base64.c \
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Bootloader/Utility/Src/crc/crc32_base.c \
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Bootloader/Utility/Src/crc/crc32_variants/crc32_bzip2.c \

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