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/*********************************************************************************************************//**
* @file syscalls.c
* @version $Rev:: 6830 $
* @date $Date:: 2023-03-27 #$
* @brief Implementation of system call related functions.
*************************************************************************************************************
* @attention
*
* Firmware Disclaimer Information
*
* 1. The customer hereby acknowledges and agrees that the program technical documentation, including the
* code, which is supplied by Holtek Semiconductor Inc., (hereinafter referred to as "HOLTEK") is the
* proprietary and confidential intellectual property of HOLTEK, and is protected by copyright law and
* other intellectual property laws.
*
* 2. The customer hereby acknowledges and agrees that the program technical documentation, including the
* code, is confidential information belonging to HOLTEK, and must not be disclosed to any third parties
* other than HOLTEK and the customer.
*
* 3. The program technical documentation, including the code, is provided "as is" and for customer reference
* only. After delivery by HOLTEK, the customer shall use the program technical documentation, including
* the code, at their own risk. HOLTEK disclaims any expressed, implied or statutory warranties, including
* the warranties of merchantability, satisfactory quality and fitness for a particular purpose.
*
* <h2><center>Copyright (C) Holtek Semiconductor Inc. All rights reserved</center></h2>
************************************************************************************************************/
/* Includes ------------------------------------------------------------------------------------------------*/
#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
/** @addtogroup HT32_Peripheral_Driver HT32 Peripheral Driver
* @{
*/
/** @defgroup SYSCALLS System call functions
* @brief System call functions for GNU toolchain
* @{
*/
/* Global variables ----------------------------------------------------------------------------------------*/
/** @defgroup SYSCALLS_Global_Variable System call global variables
* @{
*/
#undef errno
extern int errno;
extern int _end;
/**
* @}
*/
/* Global functions ----------------------------------------------------------------------------------------*/
/** @defgroup SYSCALLS_Exported_Functions System call exported functions
* @{
*/
caddr_t _sbrk(int incr)
{
static unsigned char *heap = NULL;
unsigned char *prev_heap;
if (heap == NULL)
{
heap = (unsigned char *)&_end;
}
prev_heap = heap;
heap += incr;
return (caddr_t) prev_heap;
}
int link(char *old, char *new) {
return -1;
}
int _close(int fd)
{
return -1;
}
int _fstat(int fd, struct stat *st)
{
st->st_mode = S_IFCHR;
return 0;
}
int _isatty(int fd)
{
return 1;
}
int _lseek(int fd, int ptr, int dir)
{
return 0;
}
int _read(int fd, char *ptr, int len)
{
return 0;
}
int _write(int fd, char *ptr, int len)
{
return len;
}
void abort(void)
{
/* Abort called */
while (1);
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
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