esp-idf/components/newlib/syscalls.c

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <string.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdarg.h>
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include <reent.h>
#include <sys/fcntl.h>
int system(const char* str)
{
errno = ENOSYS;
return -1;
}
int _system_r(struct _reent *r, const char *str)
{
__errno_r(r) = ENOSYS;
return -1;
}
int raise(int sig)
{
abort();
}
int _raise_r(struct _reent *r, int sig)
{
abort();
}
void* _sbrk_r(struct _reent *r, ptrdiff_t sz)
{
abort();
}
int _getpid_r(struct _reent *r)
{
__errno_r(r) = ENOSYS;
return -1;
}
int _kill_r(struct _reent *r, int pid, int sig)
{
__errno_r(r) = ENOSYS;
return -1;
}
void _exit(int __status)
{
abort();
}
/* Replaces newlib fcntl, which has been compiled without HAVE_FCNTL */
int fcntl(int fd, int cmd, ...)
{
va_list args;
va_start(args, cmd);
int arg = va_arg(args, int);
va_end(args);
struct _reent* r = __getreent();
return _fcntl_r(r, fd, cmd, arg);
}
/* No-op function, used to force linking this file,
instead of the syscalls implementation from libgloss.
*/
void newlib_include_syscalls_impl(void)
{
}