[refactor] replace system libc with local libc

bsp/bsp_common/platform/syscalls.c

@@ -0,0 +1,290 @@
+#include <reent.h>
+#include <errno.h>
+#include <unistd.h>
+#include "drv_mmheap.h"
+#include "drv_device.h"
+
+#ifdef CONF_VFS_ENABLE
+#include <vfs.h>
+#endif
+
+/* Reentrant versions of system calls.  */
+
+/* global errno in RT-Thread */
+static volatile int _sys_errno = 0;
+
+#ifndef _REENT_ONLY
+int *__errno()
+{
+    // #if (configUSE_POSIX_ERRNO == 1)
+    //     {
+    //         extern int FreeRTOS_errno;
+
+    //         return &FreeRTOS_errno;
+    //     }
+    // #endif
+    return (int *)&_sys_errno;
+}
+#endif
+
+int _getpid_r(struct _reent *ptr)
+{
+    return 0;
+}
+
+int _execve_r(struct _reent *ptr, const char *name, char *const *argv, char *const *env)
+{
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+}
+
+int _fcntl_r(struct _reent *ptr, int fd, int cmd, int arg)
+{
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+}
+
+int _fork_r(struct _reent *ptr)
+{
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+}
+
+int _fstat_r(struct _reent *ptr, int fd, struct stat *pstat)
+{
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+}
+
+int _isatty_r(struct _reent *ptr, int fd)
+{
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+}
+
+int _kill_r(struct _reent *ptr, int pid, int sig)
+{
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+}
+
+int _link_r(struct _reent *ptr, const char *old, const char *new)
+{
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+}
+
+_off_t _lseek_r(struct _reent *ptr, int fd, _off_t pos, int whence)
+{
+#ifndef CONF_VFS_ENABLE
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+#else
+    _off_t rc;
+
+    rc = aos_lseek(fd, pos, whence);
+    return rc;
+#endif
+}
+
+int _mkdir_r(struct _reent *ptr, const char *name, int mode)
+{
+#ifndef CONF_VFS_ENABLE
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+#else
+    int rc;
+
+    rc = aos_mkdir(name);
+    return rc;
+#endif
+}
+
+int _open_r(struct _reent *ptr, const char *file, int flags, int mode)
+{
+#ifndef CONF_VFS_ENABLE
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+#else
+    int rc;
+
+    rc = aos_open(file, flags);
+    return rc;
+#endif
+}
+
+int _close_r(struct _reent *ptr, int fd)
+{
+#ifndef CONF_VFS_ENABLE
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+#else
+    return aos_close(fd);
+#endif
+}
+
+_ssize_t _read_r(struct _reent *ptr, int fd, void *buf, size_t nbytes)
+{
+#ifndef CONF_VFS_ENABLE
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+#else
+    _ssize_t rc;
+
+    rc = aos_read(fd, buf, nbytes);
+    return rc;
+#endif
+}
+
+int _rename_r(struct _reent *ptr, const char *old, const char *new)
+{
+#ifndef CONF_VFS_ENABLE
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+#else
+    int rc;
+
+    rc = aos_rename(old, new);
+    return rc;
+#endif
+}
+
+int _stat_r(struct _reent *ptr, const char *file, struct stat *pstat)
+{
+#ifndef CONF_VFS_ENABLE
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+#else
+    int rc;
+
+    rc = aos_stat(file, pstat);
+    return rc;
+#endif
+}
+
+int _unlink_r(struct _reent *ptr, const char *file)
+{
+#ifndef CONF_VFS_ENABLE
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+#else
+    return aos_unlink(file);
+#endif
+}
+
+int _wait_r(struct _reent *ptr, int *status)
+{
+    /* return "not supported" */
+    ptr->_errno = -ENOSYS;
+    return -1;
+}
+
+_ssize_t _write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes)
+{
+#ifndef CONF_VFS_ENABLE
+    struct device *uart = device_find("debug_log");
+    if ((STDOUT_FILENO == fd) || (STDERR_FILENO == fd)) {
+        device_write(uart, 0, (uint8_t *)buf, nbytes);
+    }
+    return 0;
+#else
+    _ssize_t rc;
+
+    rc = aos_write(fd, buf, nbytes);
+    return rc;
+#endif
+}
+
+void *_malloc_r(struct _reent *ptr, size_t size)
+{
+    void *result;
+
+    result = (void *)mmheap_alloc(size);
+    if (result == NULL) {
+        ptr->_errno = -ENOMEM;
+    }
+
+    return result;
+}
+
+void *_realloc_r(struct _reent *ptr, void *old, size_t newlen)
+{
+    void *result;
+
+    result = (void *)mmheap_realloc(old, newlen);
+    if (result == NULL) {
+        ptr->_errno = -ENOMEM;
+    }
+
+    return result;
+}
+
+void *_calloc_r(struct _reent *ptr, size_t size, size_t len)
+{
+    void *result;
+
+    result = (void *)mmheap_calloc(size, len);
+    if (result == NULL) {
+        ptr->_errno = -ENOMEM;
+    }
+
+    return result;
+}
+
+void _free_r(struct _reent *ptr, void *addr)
+{
+    mmheap_free(addr);
+}
+
+void *_sbrk_r(struct _reent *ptr, ptrdiff_t incr)
+{
+    return 0;
+}
+
+/* for exit() and abort() */
+void __attribute__((noreturn))
+_exit(int status)
+{
+    while (1) {
+    }
+}
+
+void _system(const char *s)
+{
+}
+
+void __libc_init_array(void)
+{
+    /* we not use __libc init_aray to initialize C++ objects */
+}
+
+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);
+*/