120 lines
1.9 KiB
C
120 lines
1.9 KiB
C
/*
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* syscalls.c
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*
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* Created on: 15 θών 2015 γ.
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* Author: Sergey
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*/
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "hal_library.h"
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#include "board.h"
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extern UART_HandleTypeDef CONSOLE_UART;
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extern int errno;
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register char * stack_ptr asm("sp");
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caddr_t _sbrk(int incr) {
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extern char end asm("end");
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static char *heap_end;
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char *prev_heap_end;
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if (heap_end == 0)
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heap_end = &end;
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prev_heap_end = heap_end;
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if (heap_end + incr > stack_ptr) {
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errno = ENOMEM;
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return (caddr_t) -1;
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}
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heap_end += incr;
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return (caddr_t) prev_heap_end;
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}
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#ifndef __errno_r
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#include <sys/reent.h>
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#define __errno_r(reent) reent->_errno
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#endif
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int _write_r(struct _reent *r, int file, char * ptr, int len){
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(void)r;
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(void)file;
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(void)ptr;
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while (HAL_UART_GetState(&CONSOLE_UART) == HAL_UART_STATE_BUSY_TX ||
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HAL_UART_GetState(&CONSOLE_UART) == HAL_UART_STATE_BUSY_TX_RX)
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{
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}
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//HAL_UART_Transmit_IT(&CONSOLE_UART, (uint8_t*)ptr, len);
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HAL_UART_Transmit(&CONSOLE_UART, (uint8_t*)ptr, len, HAL_MAX_DELAY);
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return len;
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}
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int _read_r(struct _reent *r, int file, char * ptr, int len)
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{
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(void)r;
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(void)file;
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(void)ptr;
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(void)len;
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__errno_r(r) = EINVAL;
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return -1;
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}
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int _lseek_r(struct _reent *r, int file, int ptr, int dir){
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(void)r;
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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 _close_r(struct _reent *r, int file){
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(void)r;
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(void)file;
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return 0;
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}
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int _open_r ( struct _reent *ptr, const char *file, int flags, int mode ){
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int fd = -1;
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return fd;
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}
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int _fstat_r(struct _reent *r, int file, struct stat * st){
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(void)r;
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(void)file;
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memset(st, 0, sizeof(*st));
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st->st_mode = S_IFCHR;
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return 0;
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}
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int _isatty_r(struct _reent *r, int fd){
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(void)r;
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(void)fd;
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return 1;
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}
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int _kill (int a, int b){
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(void)a;
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(void)b;
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return 0;
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}
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int _getpid(int a){
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(void)a;
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return 0;
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}
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void _exit(int status){
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for(;;);
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}
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