Nicolas Borla
BBR 1 Ebene
Diff: mbed-os/platform/mbed_retarget.h
- Revision:
- 0:fbdae7e6d805
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/platform/mbed_retarget.h Mon May 14 11:29:06 2018 +0000
@@ -0,0 +1,559 @@
+/*
+ * mbed Microcontroller Library
+ * Copyright (c) 2006-2016 ARM Limited
+ *
+ * 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.
+ *
+ */
+
+#ifndef RETARGET_H
+#define RETARGET_H
+
+#if __cplusplus
+#include <cstdio>
+#else
+#include <stdio.h>
+#endif //__cplusplus
+#include <stdint.h>
+#include <stddef.h>
+
+/* We can get the following standard types from sys/types for gcc, but we
+ * need to define the types ourselves for the other compilers that normally
+ * target embedded systems */
+typedef signed int ssize_t; ///< Signed size type, usually encodes negative errors
+typedef signed long off_t; ///< Offset in a data stream
+typedef unsigned int nfds_t; ///< Number of file descriptors
+typedef unsigned long long fsblkcnt_t; ///< Count of file system blocks
+#if defined(__ARMCC_VERSION) || !defined(__GNUC__)
+typedef unsigned int mode_t; ///< Mode for opening files
+typedef unsigned int dev_t; ///< Device ID type
+typedef unsigned long ino_t; ///< File serial number
+typedef unsigned int nlink_t; ///< Number of links to a file
+typedef unsigned int uid_t; ///< User ID
+typedef unsigned int gid_t; ///< Group ID
+#endif
+
+#define O_RDONLY 0 ///< Open for reading
+#define O_WRONLY 1 ///< Open for writing
+#define O_RDWR 2 ///< Open for reading and writing
+#define O_CREAT 0x0200 ///< Create file if it does not exist
+#define O_TRUNC 0x0400 ///< Truncate file to zero length
+#define O_EXCL 0x0800 ///< Fail if file exists
+#define O_APPEND 0x0008 ///< Set file offset to end of file prior to each write
+#define O_BINARY 0x8000 ///< Open file in binary mode
+
+#define NAME_MAX 255 ///< Maximum size of a name in a file path
+
+#define STDIN_FILENO 0
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+
+#include <time.h>
+
+/** \addtogroup platform */
+/** @{*/
+/**
+ * \defgroup platform_retarget Retarget functions
+ * @{
+ */
+
+/* DIR declarations must also be here */
+#if __cplusplus
+namespace mbed {
+
+class FileHandle;
+class DirHandle;
+
+/** Targets may implement this to change stdin, stdout, stderr.
+ *
+ * If the application hasn't provided mbed_override_console, this is called
+ * to give the target a chance to specify a FileHandle for the console.
+ *
+ * If this is not provided or returns NULL, the console will be:
+ * - UARTSerial if configuration option "platform.stdio-buffered-serial" is
+ * true and the target has DEVICE_SERIAL;
+ * - Raw HAL serial via serial_getc and serial_putc if
+ * "platform.stdio-buffered-serial" is false and the target has DEVICE_SERIAL;
+ * - stdout/stderr will be a sink and stdin will input a stream of 0s if the
+ * target does not have DEVICE_SERIAL.
+ *
+ * @param fd file descriptor - STDIN_FILENO, STDOUT_FILENO or STDERR_FILENO
+ * @return pointer to FileHandle to override normal stream otherwise NULL
+ */
+FileHandle* mbed_target_override_console(int fd);
+
+/** Applications may implement this to change stdin, stdout, stderr.
+ *
+ * This hook gives the application a chance to specify a custom FileHandle
+ * for the console.
+ *
+ * If this is not provided or returns NULL, the console will be specified
+ * by mbed_target_override_console, else will default to serial - see
+ * mbed_target_override_console for more details.
+ *
+ * Example:
+ * @code
+ * FileHandle* mbed::mbed_override_console(int) {
+ * static UARTSerial my_serial(D0, D1);
+ * return &my_serial;
+ * }
+ * @endcode
+
+ * @param fd file descriptor - STDIN_FILENO, STDOUT_FILENO or STDERR_FILENO
+ * @return pointer to FileHandle to override normal stream otherwise NULL
+ */
+FileHandle* mbed_override_console(int fd);
+
+}
+
+typedef mbed::DirHandle DIR;
+#else
+typedef struct Dir DIR;
+#endif
+
+/* The intent of this section is to unify the errno error values to match
+ * the POSIX definitions for the GCC_ARM, ARMCC and IAR compilers. This is
+ * necessary because the ARMCC/IAR errno.h, or sys/stat.h are missing some
+ * symbol definitions used by the POSIX filesystem API to return errno codes.
+ * Note also that ARMCC errno.h defines some symbol values differently from
+ * the GCC_ARM/IAR/standard POSIX definitions. The definitions guard against
+ * this and future changes by changing the symbol definition as shown below.
+ */
+#undef EPERM
+#define EPERM 1 /* Operation not permitted */
+#undef ENOENT
+#define ENOENT 2 /* No such file or directory */
+#undef ESRCH
+#define ESRCH 3 /* No such process */
+#undef EINTR
+#define EINTR 4 /* Interrupted system call */
+#undef EIO
+#define EIO 5 /* I/O error */
+#undef ENXIO
+#define ENXIO 6 /* No such device or address */
+#undef E2BIG
+#define E2BIG 7 /* Argument list too long */
+#undef ENOEXEC
+#define ENOEXEC 8 /* Exec format error */
+#undef EBADF
+#define EBADF 9 /* Bad file number */
+#undef ECHILD
+#define ECHILD 10 /* No child processes */
+#undef EAGAIN
+#define EAGAIN 11 /* Try again */
+#undef ENOMEM
+#define ENOMEM 12 /* Out of memory */
+#undef EACCES
+#define EACCES 13 /* Permission denied */
+#undef EFAULT
+#define EFAULT 14 /* Bad address */
+#undef ENOTBLK
+#define ENOTBLK 15 /* Block device required */
+#undef EBUSY
+#define EBUSY 16 /* Device or resource busy */
+#undef EEXIST
+#define EEXIST 17 /* File exists */
+#undef EXDEV
+#define EXDEV 18 /* Cross-device link */
+#undef ENODEV
+#define ENODEV 19 /* No such device */
+#undef ENOTDIR
+#define ENOTDIR 20 /* Not a directory */
+#undef EISDIR
+#define EISDIR 21 /* Is a directory */
+#undef EINVAL
+#define EINVAL 22 /* Invalid argument */
+#undef ENFILE
+#define ENFILE 23 /* File table overflow */
+#undef EMFILE
+#define EMFILE 24 /* Too many open files */
+#undef ENOTTY
+#define ENOTTY 25 /* Not a typewriter */
+#undef ETXTBSY
+#define ETXTBSY 26 /* Text file busy */
+#undef EFBIG
+#define EFBIG 27 /* File too large */
+#undef ENOSPC
+#define ENOSPC 28 /* No space left on device */
+#undef ESPIPE
+#define ESPIPE 29 /* Illegal seek */
+#undef EROFS
+#define EROFS 30 /* Read-only file system */
+#undef EMLINK
+#define EMLINK 31 /* Too many links */
+#undef EPIPE
+#define EPIPE 32 /* Broken pipe */
+#undef EDOM
+#define EDOM 33 /* Math argument out of domain of func */
+#undef ERANGE
+#define ERANGE 34 /* Math result not representable */
+#undef EDEADLK
+#define EDEADLK 35 /* Resource deadlock would occur */
+#undef ENAMETOOLONG
+#define ENAMETOOLONG 36 /* File name too long */
+#undef ENOLCK
+#define ENOLCK 37 /* No record locks available */
+#undef ENOSYS
+#define ENOSYS 38 /* Function not implemented */
+#undef ENOTEMPTY
+#define ENOTEMPTY 39 /* Directory not empty */
+#undef ELOOP
+#define ELOOP 40 /* Too many symbolic links encountered */
+#undef EWOULDBLOCK
+#define EWOULDBLOCK EAGAIN /* Operation would block */
+#undef ENOMSG
+#define ENOMSG 42 /* No message of desired type */
+#undef EIDRM
+#define EIDRM 43 /* Identifier removed */
+#undef ECHRNG
+#define ECHRNG 44 /* Channel number out of range */
+#undef EL2NSYNC
+#define EL2NSYNC 45 /* Level 2 not synchronized */
+#undef EL3HLT
+#define EL3HLT 46 /* Level 3 halted */
+#undef EL3RST
+#define EL3RST 47 /* Level 3 reset */
+#undef ELNRNG
+#define ELNRNG 48 /* Link number out of range */
+#undef EUNATCH
+#define EUNATCH 49 /* Protocol driver not attached */
+#undef ENOCSI
+#define ENOCSI 50 /* No CSI structure available */
+#undef EL2HLT
+#define EL2HLT 51 /* Level 2 halted */
+#undef EBADE
+#define EBADE 52 /* Invalid exchange */
+#undef EBADR
+#define EBADR 53 /* Invalid request descriptor */
+#undef EXFULL
+#define EXFULL 54 /* Exchange full */
+#undef ENOANO
+#define ENOANO 55 /* No anode */
+#undef EBADRQC
+#define EBADRQC 56 /* Invalid request code */
+#undef EBADSLT
+#define EBADSLT 57 /* Invalid slot */
+#undef EDEADLOCK
+#define EDEADLOCK EDEADLK /* Resource deadlock would occur */
+#undef EBFONT
+#define EBFONT 59 /* Bad font file format */
+#undef ENOSTR
+#define ENOSTR 60 /* Device not a stream */
+#undef ENODATA
+#define ENODATA 61 /* No data available */
+#undef ETIME
+#define ETIME 62 /* Timer expired */
+#undef ENOSR
+#define ENOSR 63 /* Out of streams resources */
+#undef ENONET
+#define ENONET 64 /* Machine is not on the network */
+#undef ENOPKG
+#define ENOPKG 65 /* Package not installed */
+#undef EREMOTE
+#define EREMOTE 66 /* Object is remote */
+#undef ENOLINK
+#define ENOLINK 67 /* Link has been severed */
+#undef EADV
+#define EADV 68 /* Advertise error */
+#undef ESRMNT
+#define ESRMNT 69 /* Srmount error */
+#undef ECOMM
+#define ECOMM 70 /* Communication error on send */
+#undef EPROTO
+#define EPROTO 71 /* Protocol error */
+#undef EMULTIHOP
+#define EMULTIHOP 72 /* Multihop attempted */
+#undef EDOTDOT
+#define EDOTDOT 73 /* RFS specific error */
+#undef EBADMSG
+#define EBADMSG 74 /* Not a data message */
+#undef EOVERFLOW
+#define EOVERFLOW 75 /* Value too large for defined data type */
+#undef ENOTUNIQ
+#define ENOTUNIQ 76 /* Name not unique on network */
+#undef EBADFD
+#define EBADFD 77 /* File descriptor in bad state */
+#undef EREMCHG
+#define EREMCHG 78 /* Remote address changed */
+#undef ELIBACC
+#define ELIBACC 79 /* Can not access a needed shared library */
+#undef ELIBBAD
+#define ELIBBAD 80 /* Accessing a corrupted shared library */
+#undef ELIBSCN
+#define ELIBSCN 81 /* .lib section in a.out corrupted */
+#undef ELIBMAX
+#define ELIBMAX 82 /* Attempting to link in too many shared libraries */
+#undef ELIBEXEC
+#define ELIBEXEC 83 /* Cannot exec a shared library directly */
+#undef EILSEQ
+#define EILSEQ 84 /* Illegal byte sequence */
+#undef ERESTART
+#define ERESTART 85 /* Interrupted system call should be restarted */
+#undef ESTRPIPE
+#define ESTRPIPE 86 /* Streams pipe error */
+#undef EUSERS
+#define EUSERS 87 /* Too many users */
+#undef ENOTSOCK
+#define ENOTSOCK 88 /* Socket operation on non-socket */
+#undef EDESTADDRREQ
+#define EDESTADDRREQ 89 /* Destination address required */
+#undef EMSGSIZE
+#define EMSGSIZE 90 /* Message too long */
+#undef EPROTOTYPE
+#define EPROTOTYPE 91 /* Protocol wrong type for socket */
+#undef ENOPROTOOPT
+#define ENOPROTOOPT 92 /* Protocol not available */
+#undef EPROTONOSUPPORT
+#define EPROTONOSUPPORT 93 /* Protocol not supported */
+#undef ESOCKTNOSUPPORT
+#define ESOCKTNOSUPPORT 94 /* Socket type not supported */
+#undef EOPNOTSUPP
+#define EOPNOTSUPP 95 /* Operation not supported on transport endpoint */
+#undef EPFNOSUPPORT
+#define EPFNOSUPPORT 96 /* Protocol family not supported */
+#undef EAFNOSUPPORT
+#define EAFNOSUPPORT 97 /* Address family not supported by protocol */
+#undef EADDRINUSE
+#define EADDRINUSE 98 /* Address already in use */
+#undef EADDRNOTAVAIL
+#define EADDRNOTAVAIL 99 /* Cannot assign requested address */
+#undef ENETDOWN
+#define ENETDOWN 100 /* Network is down */
+#undef ENETUNREACH
+#define ENETUNREACH 101 /* Network is unreachable */
+#undef ENETRESET
+#define ENETRESET 102 /* Network dropped connection because of reset */
+#undef ECONNABORTED
+#define ECONNABORTED 103 /* Software caused connection abort */
+#undef ECONNRESET
+#define ECONNRESET 104 /* Connection reset by peer */
+#undef ENOBUFS
+#define ENOBUFS 105 /* No buffer space available */
+#undef EISCONN
+#define EISCONN 106 /* Transport endpoint is already connected */
+#undef ENOTCONN
+#define ENOTCONN 107 /* Transport endpoint is not connected */
+#undef ESHUTDOWN
+#define ESHUTDOWN 108 /* Cannot send after transport endpoint shutdown */
+#undef ETOOMANYREFS
+#define ETOOMANYREFS 109 /* Too many references: cannot splice */
+#undef ETIMEDOUT
+#define ETIMEDOUT 110 /* Connection timed out */
+#undef ECONNREFUSED
+#define ECONNREFUSED 111 /* Connection refused */
+#undef EHOSTDOWN
+#define EHOSTDOWN 112 /* Host is down */
+#undef EHOSTUNREACH
+#define EHOSTUNREACH 113 /* No route to host */
+#undef EALREADY
+#define EALREADY 114 /* Operation already in progress */
+#undef EINPROGRESS
+#define EINPROGRESS 115 /* Operation now in progress */
+#undef ESTALE
+#define ESTALE 116 /* Stale NFS file handle */
+#undef EUCLEAN
+#define EUCLEAN 117 /* Structure needs cleaning */
+#undef ENOTNAM
+#define ENOTNAM 118 /* Not a XENIX named type file */
+#undef ENAVAIL
+#define ENAVAIL 119 /* No XENIX semaphores available */
+#undef EISNAM
+#define EISNAM 120 /* Is a named type file */
+#undef EREMOTEIO
+#define EREMOTEIO 121 /* Remote I/O error */
+#undef EDQUOT
+#define EDQUOT 122 /* Quota exceeded */
+#undef ENOMEDIUM
+#define ENOMEDIUM 123 /* No medium found */
+#undef EMEDIUMTYPE
+#define EMEDIUMTYPE 124 /* Wrong medium type */
+#undef ECANCELED
+#define ECANCELED 125 /* Operation Canceled */
+#undef ENOKEY
+#define ENOKEY 126 /* Required key not available */
+#undef EKEYEXPIRED
+#define EKEYEXPIRED 127 /* Key has expired */
+#undef EKEYREVOKED
+#define EKEYREVOKED 128 /* Key has been revoked */
+#undef EKEYREJECTED
+#define EKEYREJECTED 129 /* Key was rejected by service */
+#undef EOWNERDEAD
+#define EOWNERDEAD 130 /* Owner died */
+#undef ENOTRECOVERABLE
+#define ENOTRECOVERABLE 131 /* State not recoverable */
+
+/* Missing stat.h defines.
+ * The following are sys/stat.h definitions not currently present in the ARMCC
+ * errno.h. Note, ARMCC errno.h defines some symbol values differing from
+ * GCC_ARM/IAR/standard POSIX definitions. Guard against this and future
+ * changes by changing the symbol definition for filesystem use.
+ */
+#define _IFMT 0170000 //< type of file
+#define _IFSOCK 0140000 //< socket
+#define _IFLNK 0120000 //< symbolic link
+#define _IFREG 0100000 //< regular
+#define _IFBLK 0060000 //< block special
+#define _IFDIR 0040000 //< directory
+#define _IFCHR 0020000 //< character special
+#define _IFIFO 0010000 //< fifo special
+
+#define S_IFMT _IFMT //< type of file
+#define S_IFSOCK _IFSOCK //< socket
+#define S_IFLNK _IFLNK //< symbolic link
+#define S_IFREG _IFREG //< regular
+#define S_IFBLK _IFBLK //< block special
+#define S_IFDIR _IFDIR //< directory
+#define S_IFCHR _IFCHR //< character special
+#define S_IFIFO _IFIFO //< fifo special
+
+#define S_IRWXU (S_IRUSR | S_IWUSR | S_IXUSR)
+#define S_IRUSR 0000400 ///< read permission, owner
+#define S_IWUSR 0000200 ///< write permission, owner
+#define S_IXUSR 0000100 ///< execute/search permission, owner
+#define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
+#define S_IRGRP 0000040 ///< read permission, group
+#define S_IWGRP 0000020 ///< write permission, group
+#define S_IXGRP 0000010 ///< execute/search permission, group
+#define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
+#define S_IROTH 0000004 ///< read permission, other
+#define S_IWOTH 0000002 ///< write permission, other
+#define S_IXOTH 0000001 ///< execute/search permission, other
+
+/* Refer to sys/stat standard
+ * Note: Not all fields may be supported by the underlying filesystem
+ */
+struct stat {
+ dev_t st_dev; ///< Device ID containing file
+ ino_t st_ino; ///< File serial number
+ mode_t st_mode; ///< Mode of file
+ nlink_t st_nlink; ///< Number of links to file
+
+ uid_t st_uid; ///< User ID
+ gid_t st_gid; ///< Group ID
+
+ off_t st_size; ///< Size of file in bytes
+
+ time_t st_atime; ///< Time of last access
+ time_t st_mtime; ///< Time of last data modification
+ time_t st_ctime; ///< Time of last status change
+};
+
+struct statvfs {
+ unsigned long f_bsize; ///< Filesystem block size
+ unsigned long f_frsize; ///< Fragment size (block size)
+
+ fsblkcnt_t f_blocks; ///< Number of blocks
+ fsblkcnt_t f_bfree; ///< Number of free blocks
+ fsblkcnt_t f_bavail; ///< Number of free blocks for unprivileged users
+
+ unsigned long f_fsid; ///< Filesystem ID
+
+ unsigned long f_namemax; ///< Maximum filename length
+};
+
+/* The following are dirent.h definitions are declared here to guarantee
+ * consistency where structure may be different with different toolchains
+ */
+struct dirent {
+ char d_name[NAME_MAX+1]; ///< Name of file
+ uint8_t d_type; ///< Type of file
+};
+
+enum {
+ DT_UNKNOWN, ///< The file type could not be determined.
+ DT_FIFO, ///< This is a named pipe (FIFO).
+ DT_CHR, ///< This is a character device.
+ DT_DIR, ///< This is a directory.
+ DT_BLK, ///< This is a block device.
+ DT_REG, ///< This is a regular file.
+ DT_LNK, ///< This is a symbolic link.
+ DT_SOCK, ///< This is a UNIX domain socket.
+};
+
+struct pollfd {
+ int fd;
+ short events;
+ short revents;
+};
+
+/* POSIX-compatible I/O functions */
+#if __cplusplus
+extern "C" {
+#endif
+ int open(const char *path, int oflag, ...);
+#ifndef __IAR_SYSTEMS_ICC__ /* IAR provides fdopen itself */
+#if __cplusplus
+ std::FILE* fdopen(int fildes, const char *mode);
+#else
+ FILE* fdopen(int fildes, const char *mode);
+#endif
+#endif
+ ssize_t write(int fildes, const void *buf, size_t nbyte);
+ ssize_t read(int fildes, void *buf, size_t nbyte);
+ off_t lseek(int fildes, off_t offset, int whence);
+ int isatty(int fildes);
+ int fsync(int fildes);
+ int fstat(int fh, struct stat *st);
+ int poll(struct pollfd fds[], nfds_t nfds, int timeout);
+ int close(int fildes);
+ int stat(const char *path, struct stat *st);
+ int statvfs(const char *path, struct statvfs *buf);
+ DIR *opendir(const char*);
+ struct dirent *readdir(DIR *);
+ int closedir(DIR*);
+ void rewinddir(DIR*);
+ long telldir(DIR*);
+ void seekdir(DIR*, long);
+ int mkdir(const char *name, mode_t n);
+#if __cplusplus
+}; // extern "C"
+
+namespace mbed {
+
+/** This call is an analogue to POSIX fdopen().
+ *
+ * It associates a C stream to an already-opened FileHandle, to allow you to
+ * use C printf/scanf/fwrite etc. The provided FileHandle must remain open -
+ * it will be closed by the C library when fclose(FILE) is called.
+ *
+ * The net effect is fdopen(bind_to_fd(fh), mode), with error handling.
+ *
+ * @param fh a pointer to an opened FileHandle
+ * @param mode operation upon the file descriptor, e.g., "w+"
+ *
+ * @returns a pointer to FILE
+ */
+std::FILE* fdopen(mbed::FileHandle *fh, const char *mode);
+
+/** Bind an mbed FileHandle to a POSIX file descriptor
+ *
+ * This is similar to fdopen, but only operating at the POSIX layer - it
+ * associates a POSIX integer file descriptor with a FileHandle, to allow you
+ * to use POSIX read/write calls etc. The provided FileHandle must remain open -
+ * it will be closed when close(int) is called.
+ *
+ * @param fh a pointer to an opened FileHandle
+ *
+ * @return an integer file descriptor, or negative if no descriptors available
+ */
+int bind_to_fd(mbed::FileHandle *fh);
+
+} // namespace mbed
+
+#endif // __cplusplus
+
+/**@}*/
+
+/**@}*/
+
+#endif /* RETARGET_H */