/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-02-11 Meco Man remove _gettimeofday_r() and _times_r() * 2020-02-13 Meco Man re-implement exit() and abort() * 2020-02-21 Meco Man improve and beautify syscalls * 2020-02-24 Meco Man fix bug of _isatty_r() */ #include #include #include #include #include #ifdef RT_USING_DFS #include #endif #ifdef RT_USING_MODULE #include #endif /* Reentrant versions of system calls. */ #ifndef _REENT_ONLY int *__errno () { return _rt_errno(); } #endif int _getpid_r(struct _reent *ptr) { return 0; } int _close_r(struct _reent *ptr, int fd) { #ifndef RT_USING_DFS /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; #else return close(fd); #endif } int _execve_r(struct _reent *ptr, const char * name, char *const *argv, char *const *env) { /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; } int _fcntl_r(struct _reent *ptr, int fd, int cmd, int arg) { /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; } int _fork_r(struct _reent *ptr) { /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; } int _fstat_r(struct _reent *ptr, int fd, struct stat *pstat) { /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; } int _isatty_r(struct _reent *ptr, int fd) { if (fd >=0 && fd < 3) { return 1; } else { return 0; } } int _kill_r(struct _reent *ptr, int pid, int sig) { /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; } int _link_r(struct _reent *ptr, const char *old, const char *new) { /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; } _off_t _lseek_r(struct _reent *ptr, int fd, _off_t pos, int whence) { #ifndef RT_USING_DFS /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; #else _off_t rc; rc = lseek(fd, pos, whence); return rc; #endif } int _mkdir_r(struct _reent *ptr, const char *name, int mode) { #ifndef RT_USING_DFS /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; #else int rc; rc = mkdir(name, mode); return rc; #endif } int _open_r(struct _reent *ptr, const char *file, int flags, int mode) { #ifndef RT_USING_DFS /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; #else int rc; rc = open(file, flags, mode); return rc; #endif } _ssize_t _read_r(struct _reent *ptr, int fd, void *buf, size_t nbytes) { #ifndef RT_USING_DFS /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; #else _ssize_t rc; rc = read(fd, buf, nbytes); return rc; #endif } int _rename_r(struct _reent *ptr, const char *old, const char *new) { #ifndef RT_USING_DFS /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; #else int rc; rc = rename(old, new); return rc; #endif } int _stat_r(struct _reent *ptr, const char *file, struct stat *pstat) { #ifndef RT_USING_DFS /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; #else int rc; rc = stat(file, pstat); return rc; #endif } int _unlink_r(struct _reent *ptr, const char *file) { #ifndef RT_USING_DFS /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; #else return unlink(file); #endif } int _wait_r(struct _reent *ptr, int *status) { /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; } _ssize_t _write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes) { #ifndef RT_USING_DFS #if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE) if (fileno(stdout) == fd) { rt_device_t console; console = rt_console_get_device(); if (console) return rt_device_write(console, -1, buf, nbytes); } return 0; #else /* return "not supported" */ ptr->_errno = ENOTSUP; return -1; #endif /*RT_USING_DEVICE*/ #else _ssize_t rc; rc = write(fd, buf, nbytes); return rc; #endif } #ifdef RT_USING_HEAP /* Memory routine */ void *_malloc_r (struct _reent *ptr, size_t size) { void* result; result = (void*)rt_malloc (size); if (result == RT_NULL) { ptr->_errno = ENOMEM; } return result; } void *_realloc_r (struct _reent *ptr, void *old, size_t newlen) { void* result; result = (void*)rt_realloc (old, newlen); if (result == RT_NULL) { ptr->_errno = ENOMEM; } return result; } void *_calloc_r (struct _reent *ptr, size_t size, size_t len) { void* result; result = (void*)rt_calloc (size, len); if (result == RT_NULL) { ptr->_errno = ENOMEM; } return result; } void _free_r (struct _reent *ptr, void *addr) { rt_free (addr); } #else void * _sbrk_r(struct _reent *ptr, ptrdiff_t incr) { return RT_NULL; } #endif /*RT_USING_HEAP*/ /* for exit() and abort() */ __attribute__ ((noreturn)) void _exit (int status) { extern void __rt_libc_exit(int status); __rt_libc_exit(status); while(1); } void _system(const char *s) { extern int __rt_libc_system(const char *string); __rt_libc_system(s); } void __libc_init_array(void) { /* we not use __libc init_aray to initialize C++ objects */ /* __libc_init_array is ARM code, not Thumb; it will cause hardfault. */ } mode_t umask(mode_t mask) { return 022; } int flock(int fd, int operation) { return 0; } /* These functions are implemented and replaced by the 'common/time.c' file int _gettimeofday_r(struct _reent *ptr, struct timeval *__tp, void *__tzp); _CLOCK_T_ _times_r(struct _reent *ptr, struct tms *ptms); */