| 1 | /*
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| 2 | * mbed Microcontroller Library
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| 3 | * Copyright (c) 2006-2016 ARM Limited
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| 4 | * SPDX-License-Identifier: Apache-2.0
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| 5 | *
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| 6 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 7 | * you may not use this file except in compliance with the License.
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| 8 | * You may obtain a copy of the License at
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| 9 | *
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0
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| 11 | *
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| 12 | * Unless required by applicable law or agreed to in writing, software
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 15 | * See the License for the specific language governing permissions and
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| 16 | * limitations under the License.
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| 17 | *
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| 18 | */
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| 19 |
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| 20 | #ifndef RETARGET_H
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| 21 | #define RETARGET_H
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| 22 |
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| 23 | #ifdef __cplusplus
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| 24 | #include <cstdio>
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| 25 | #else
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| 26 | #include <stdio.h>
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| 27 | #endif //__cplusplus
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| 28 | #include <stdint.h>
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| 29 | #include <stddef.h>
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| 30 | #include <sys/types.h>
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| 31 | #include <sys/stat.h>
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| 32 |
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| 33 | /* Include logic for errno so we can get errno defined but not bring in error_t,
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| 34 | * including errno here prevents an include later, which would redefine our
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| 35 | * error codes
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| 36 | */
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| 37 | #ifndef __error_t_defined
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| 38 | #define __error_t_defined 1
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| 39 | #include <errno.h>
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| 40 | #undef __error_t_defined
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| 41 | #else
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| 42 | #include <errno.h>
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| 43 | #endif
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| 44 |
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| 45 | /* We can get the following standard types from sys/types for gcc, but we
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| 46 | * need to define the types ourselves for the other compilers that normally
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| 47 | * target embedded systems */
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| 48 | typedef signed int ssize_t; ///< Signed size type, usually encodes negative errors
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| 49 | typedef unsigned int nfds_t; ///< Number of file descriptors
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| 50 | typedef unsigned long long fsblkcnt_t; ///< Count of file system blocks
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| 51 | #if defined(__ARMCC_VERSION) || !defined(__GNUC__)
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| 52 | typedef unsigned int mode_t; ///< Mode for opening files
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| 53 | typedef unsigned int dev_t; ///< Device ID type
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| 54 | typedef unsigned long ino_t; ///< File serial number
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| 55 | typedef unsigned int nlink_t; ///< Number of links to a file
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| 56 | typedef unsigned int uid_t; ///< User ID
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| 57 | typedef unsigned int gid_t; ///< Group ID
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| 58 | #endif
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| 59 |
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| 60 | /* Flags for open() and fcntl(GETFL/SETFL)
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| 61 | * At present, fcntl only supports reading and writing O_NONBLOCK
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| 62 | */
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| 63 | #define O_RDONLY 0 ///< Open for reading
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| 64 | #define O_WRONLY 1 ///< Open for writing
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| 65 | #define O_RDWR 2 ///< Open for reading and writing
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| 66 | #define O_NONBLOCK 04000 ///< Non-blocking mode
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| 67 | #define O_APPEND 02000 ///< Set file offset to end of file prior to each write
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| 68 | #define O_CREAT 0100 ///< Create file if it does not exist
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| 69 | #define O_TRUNC 01000 ///< Truncate file to zero length
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| 70 | #define O_EXCL 0200 ///< Fail if file exists
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| 71 | #define O_BINARY 0 ///< Open file in binary mode
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| 72 |
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| 73 | #define O_ASYNC 020000
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| 74 |
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| 75 | #define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
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| 76 |
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| 77 | #define NAME_MAX 255 ///< Maximum size of a name in a file path
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| 78 |
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| 79 | #define STDIN_FILENO 0
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| 80 | #define STDOUT_FILENO 1
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| 81 | #define STDERR_FILENO 2
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| 82 |
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| 83 | #include <time.h>
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| 84 |
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| 85 | /** \addtogroup platform */
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| 86 | /** @{*/
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| 87 | /**
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| 88 | * \defgroup platform_retarget Retarget functions
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| 89 | * @{
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| 90 | */
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| 91 | typedef struct Dir DIR;
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| 92 |
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| 93 |
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| 94 | /* The intent of this section is to unify the errno error values to match
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| 95 | * the POSIX definitions for the GCC_ARM, ARMCC and IAR compilers. This is
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| 96 | * necessary because the ARMCC/IAR errno.h, or sys/stat.h are missing some
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| 97 | * symbol definitions used by the POSIX filesystem API to return errno codes.
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| 98 | * Note also that ARMCC errno.h defines some symbol values differently from
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| 99 | * the GCC_ARM/IAR/standard POSIX definitions. The definitions guard against
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| 100 | * this and future changes by changing the symbol definition as shown below.
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| 101 | */
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| 102 | #undef EPERM
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| 103 | #define EPERM 1 /* Operation not permitted */
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| 104 | #undef ENOENT
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| 105 | #define ENOENT 2 /* No such file or directory */
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| 106 | #undef ESRCH
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| 107 | #define ESRCH 3 /* No such process */
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| 108 | #undef EINTR
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| 109 | #define EINTR 4 /* Interrupted system call */
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| 110 | #undef EIO
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| 111 | #define EIO 5 /* I/O error */
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| 112 | #undef ENXIO
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| 113 | #define ENXIO 6 /* No such device or address */
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| 114 | #undef E2BIG
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| 115 | #define E2BIG 7 /* Argument list too long */
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| 116 | #undef ENOEXEC
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| 117 | #define ENOEXEC 8 /* Exec format error */
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| 118 | #undef EBADF
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| 119 | #define EBADF 9 /* Bad file number */
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| 120 | #undef ECHILD
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| 121 | #define ECHILD 10 /* No child processes */
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| 122 | #undef EAGAIN
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| 123 | #define EAGAIN 11 /* Try again */
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| 124 | #undef ENOMEM
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| 125 | #define ENOMEM 12 /* Out of memory */
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| 126 | #undef EACCES
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| 127 | #define EACCES 13 /* Permission denied */
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| 128 | #undef EFAULT
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| 129 | #define EFAULT 14 /* Bad address */
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| 130 | #undef ENOTBLK
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| 131 | #define ENOTBLK 15 /* Block device required */
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| 132 | #undef EBUSY
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| 133 | #define EBUSY 16 /* Device or resource busy */
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| 134 | #undef EEXIST
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| 135 | #define EEXIST 17 /* File exists */
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| 136 | #undef EXDEV
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| 137 | #define EXDEV 18 /* Cross-device link */
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| 138 | #undef ENODEV
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| 139 | #define ENODEV 19 /* No such device */
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| 140 | #undef ENOTDIR
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| 141 | #define ENOTDIR 20 /* Not a directory */
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| 142 | #undef EISDIR
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| 143 | #define EISDIR 21 /* Is a directory */
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| 144 | #undef EINVAL
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| 145 | #define EINVAL 22 /* Invalid argument */
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| 146 | #undef ENFILE
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| 147 | #define ENFILE 23 /* File table overflow */
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| 148 | #undef EMFILE
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| 149 | #define EMFILE 24 /* Too many open files */
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| 150 | #undef ENOTTY
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| 151 | #define ENOTTY 25 /* Not a typewriter */
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| 152 | #undef ETXTBSY
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| 153 | #define ETXTBSY 26 /* Text file busy */
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| 154 | #undef EFBIG
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| 155 | #define EFBIG 27 /* File too large */
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| 156 | #undef ENOSPC
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| 157 | #define ENOSPC 28 /* No space left on device */
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| 158 | #undef ESPIPE
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| 159 | #define ESPIPE 29 /* Illegal seek */
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| 160 | #undef EROFS
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| 161 | #define EROFS 30 /* Read-only file system */
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| 162 | #undef EMLINK
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| 163 | #define EMLINK 31 /* Too many links */
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| 164 | #undef EPIPE
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| 165 | #define EPIPE 32 /* Broken pipe */
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| 166 | #undef EDOM
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| 167 | #define EDOM 33 /* Math argument out of domain of func */
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| 168 | #undef ERANGE
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| 169 | #define ERANGE 34 /* Math result not representable */
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| 170 | #undef EDEADLK
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| 171 | #define EDEADLK 35 /* Resource deadlock would occur */
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| 172 | #undef ENAMETOOLONG
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| 173 | #define ENAMETOOLONG 36 /* File name too long */
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| 174 | #undef ENOLCK
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| 175 | #define ENOLCK 37 /* No record locks available */
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| 176 | #undef ENOSYS
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| 177 | #define ENOSYS 38 /* Function not implemented */
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| 178 | #undef ENOTEMPTY
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| 179 | #define ENOTEMPTY 39 /* Directory not empty */
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| 180 | #undef ELOOP
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| 181 | #define ELOOP 40 /* Too many symbolic links encountered */
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| 182 | #undef EWOULDBLOCK
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| 183 | #define EWOULDBLOCK EAGAIN /* Operation would block */
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| 184 | #undef ENOMSG
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| 185 | #define ENOMSG 42 /* No message of desired type */
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| 186 | #undef EIDRM
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| 187 | #define EIDRM 43 /* Identifier removed */
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| 188 | #undef ECHRNG
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| 189 | #define ECHRNG 44 /* Channel number out of range */
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| 190 | #undef EL2NSYNC
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| 191 | #define EL2NSYNC 45 /* Level 2 not synchronized */
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| 192 | #undef EL3HLT
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| 193 | #define EL3HLT 46 /* Level 3 halted */
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| 194 | #undef EL3RST
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| 195 | #define EL3RST 47 /* Level 3 reset */
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| 196 | #undef ELNRNG
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| 197 | #define ELNRNG 48 /* Link number out of range */
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| 198 | #undef EUNATCH
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| 199 | #define EUNATCH 49 /* Protocol driver not attached */
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| 200 | #undef ENOCSI
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| 201 | #define ENOCSI 50 /* No CSI structure available */
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| 202 | #undef EL2HLT
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| 203 | #define EL2HLT 51 /* Level 2 halted */
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| 204 | #undef EBADE
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| 205 | #define EBADE 52 /* Invalid exchange */
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| 206 | #undef EBADR
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| 207 | #define EBADR 53 /* Invalid request descriptor */
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| 208 | #undef EXFULL
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| 209 | #define EXFULL 54 /* Exchange full */
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| 210 | #undef ENOANO
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| 211 | #define ENOANO 55 /* No anode */
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| 212 | #undef EBADRQC
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| 213 | #define EBADRQC 56 /* Invalid request code */
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| 214 | #undef EBADSLT
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| 215 | #define EBADSLT 57 /* Invalid slot */
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| 216 | #undef EDEADLOCK
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| 217 | #define EDEADLOCK EDEADLK /* Resource deadlock would occur */
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| 218 | #undef EBFONT
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| 219 | #define EBFONT 59 /* Bad font file format */
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| 220 | #undef ENOSTR
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| 221 | #define ENOSTR 60 /* Device not a stream */
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| 222 | #undef ENODATA
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| 223 | #define ENODATA 61 /* No data available */
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| 224 | #undef ETIME
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| 225 | #define ETIME 62 /* Timer expired */
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| 226 | #undef ENOSR
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| 227 | #define ENOSR 63 /* Out of streams resources */
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| 228 | #undef ENONET
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| 229 | #define ENONET 64 /* Machine is not on the network */
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| 230 | #undef ENOPKG
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| 231 | #define ENOPKG 65 /* Package not installed */
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| 232 | #undef EREMOTE
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| 233 | #define EREMOTE 66 /* Object is remote */
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| 234 | #undef ENOLINK
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| 235 | #define ENOLINK 67 /* Link has been severed */
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| 236 | #undef EADV
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| 237 | #define EADV 68 /* Advertise error */
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| 238 | #undef ESRMNT
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| 239 | #define ESRMNT 69 /* Srmount error */
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| 240 | #undef ECOMM
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| 241 | #define ECOMM 70 /* Communication error on send */
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| 242 | #undef EPROTO
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| 243 | #define EPROTO 71 /* Protocol error */
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| 244 | #undef EMULTIHOP
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| 245 | #define EMULTIHOP 72 /* Multihop attempted */
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| 246 | #undef EDOTDOT
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| 247 | #define EDOTDOT 73 /* RFS specific error */
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| 248 | #undef EBADMSG
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| 249 | #define EBADMSG 74 /* Not a data message */
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| 250 | #undef EOVERFLOW
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| 251 | #define EOVERFLOW 75 /* Value too large for defined data type */
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| 252 | #undef ENOTUNIQ
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| 253 | #define ENOTUNIQ 76 /* Name not unique on network */
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| 254 | #undef EBADFD
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| 255 | #define EBADFD 77 /* File descriptor in bad state */
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| 256 | #undef EREMCHG
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| 257 | #define EREMCHG 78 /* Remote address changed */
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| 258 | #undef ELIBACC
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| 259 | #define ELIBACC 79 /* Can not access a needed shared library */
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| 260 | #undef ELIBBAD
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| 261 | #define ELIBBAD 80 /* Accessing a corrupted shared library */
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| 262 | #undef ELIBSCN
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| 263 | #define ELIBSCN 81 /* .lib section in a.out corrupted */
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| 264 | #undef ELIBMAX
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| 265 | #define ELIBMAX 82 /* Attempting to link in too many shared libraries */
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| 266 | #undef ELIBEXEC
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| 267 | #define ELIBEXEC 83 /* Cannot exec a shared library directly */
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| 268 | #undef EILSEQ
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| 269 | #define EILSEQ 84 /* Illegal byte sequence */
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| 270 | #undef ERESTART
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| 271 | #define ERESTART 85 /* Interrupted system call should be restarted */
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| 272 | #undef ESTRPIPE
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| 273 | #define ESTRPIPE 86 /* Streams pipe error */
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| 274 | #undef EUSERS
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| 275 | #define EUSERS 87 /* Too many users */
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| 276 | #undef ENOTSOCK
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| 277 | #define ENOTSOCK 88 /* Socket operation on non-socket */
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| 278 | #undef EDESTADDRREQ
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| 279 | #define EDESTADDRREQ 89 /* Destination address required */
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| 280 | #undef EMSGSIZE
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| 281 | #define EMSGSIZE 90 /* Message too long */
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| 282 | #undef EPROTOTYPE
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| 283 | #define EPROTOTYPE 91 /* Protocol wrong type for socket */
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| 284 | #undef ENOPROTOOPT
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| 285 | #define ENOPROTOOPT 92 /* Protocol not available */
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| 286 | #undef EPROTONOSUPPORT
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| 287 | #define EPROTONOSUPPORT 93 /* Protocol not supported */
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| 288 | #undef ESOCKTNOSUPPORT
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| 289 | #define ESOCKTNOSUPPORT 94 /* Socket type not supported */
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| 290 | #undef EOPNOTSUPP
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| 291 | #define EOPNOTSUPP 95 /* Operation not supported on transport endpoint */
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| 292 | #undef EPFNOSUPPORT
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| 293 | #define EPFNOSUPPORT 96 /* Protocol family not supported */
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| 294 | #undef EAFNOSUPPORT
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| 295 | #define EAFNOSUPPORT 97 /* Address family not supported by protocol */
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| 296 | #undef EADDRINUSE
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| 297 | #define EADDRINUSE 98 /* Address already in use */
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| 298 | #undef EADDRNOTAVAIL
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| 299 | #define EADDRNOTAVAIL 99 /* Cannot assign requested address */
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| 300 | #undef ENETDOWN
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| 301 | #define ENETDOWN 100 /* Network is down */
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| 302 | #undef ENETUNREACH
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| 303 | #define ENETUNREACH 101 /* Network is unreachable */
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| 304 | #undef ENETRESET
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| 305 | #define ENETRESET 102 /* Network dropped connection because of reset */
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| 306 | #undef ECONNABORTED
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| 307 | #define ECONNABORTED 103 /* Software caused connection abort */
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| 308 | #undef ECONNRESET
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| 309 | #define ECONNRESET 104 /* Connection reset by peer */
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| 310 | #undef ENOBUFS
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| 311 | #define ENOBUFS 105 /* No buffer space available */
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| 312 | #undef EISCONN
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| 313 | #define EISCONN 106 /* Transport endpoint is already connected */
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| 314 | #undef ENOTCONN
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| 315 | #define ENOTCONN 107 /* Transport endpoint is not connected */
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| 316 | #undef ESHUTDOWN
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| 317 | #define ESHUTDOWN 108 /* Cannot send after transport endpoint shutdown */
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| 318 | #undef ETOOMANYREFS
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| 319 | #define ETOOMANYREFS 109 /* Too many references: cannot splice */
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| 320 | #undef ETIMEDOUT
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| 321 | #define ETIMEDOUT 110 /* Connection timed out */
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| 322 | #undef ECONNREFUSED
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| 323 | #define ECONNREFUSED 111 /* Connection refused */
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| 324 | #undef EHOSTDOWN
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| 325 | #define EHOSTDOWN 112 /* Host is down */
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| 326 | #undef EHOSTUNREACH
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| 327 | #define EHOSTUNREACH 113 /* No route to host */
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| 328 | #undef EALREADY
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| 329 | #define EALREADY 114 /* Operation already in progress */
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| 330 | #undef EINPROGRESS
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| 331 | #define EINPROGRESS 115 /* Operation now in progress */
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| 332 | #undef ESTALE
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| 333 | #define ESTALE 116 /* Stale NFS file handle */
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| 334 | #undef EUCLEAN
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| 335 | #define EUCLEAN 117 /* Structure needs cleaning */
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| 336 | #undef ENOTNAM
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| 337 | #define ENOTNAM 118 /* Not a XENIX named type file */
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| 338 | #undef ENAVAIL
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| 339 | #define ENAVAIL 119 /* No XENIX semaphores available */
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| 340 | #undef EISNAM
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| 341 | #define EISNAM 120 /* Is a named type file */
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| 342 | #undef EREMOTEIO
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| 343 | #define EREMOTEIO 121 /* Remote I/O error */
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| 344 | #undef EDQUOT
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| 345 | #define EDQUOT 122 /* Quota exceeded */
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| 346 | #undef ENOMEDIUM
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| 347 | #define ENOMEDIUM 123 /* No medium found */
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| 348 | #undef EMEDIUMTYPE
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| 349 | #define EMEDIUMTYPE 124 /* Wrong medium type */
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| 350 | #undef ECANCELED
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| 351 | #define ECANCELED 125 /* Operation Canceled */
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| 352 | #undef ENOKEY
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| 353 | #define ENOKEY 126 /* Required key not available */
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| 354 | #undef EKEYEXPIRED
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| 355 | #define EKEYEXPIRED 127 /* Key has expired */
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| 356 | #undef EKEYREVOKED
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| 357 | #define EKEYREVOKED 128 /* Key has been revoked */
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| 358 | #undef EKEYREJECTED
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| 359 | #define EKEYREJECTED 129 /* Key was rejected by service */
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| 360 | #undef EOWNERDEAD
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| 361 | #define EOWNERDEAD 130 /* Owner died */
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| 362 | #undef ENOTRECOVERABLE
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| 363 | #define ENOTRECOVERABLE 131 /* State not recoverable */
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| 364 |
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| 365 | struct statvfs {
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| 366 | unsigned long f_bsize; ///< Filesystem block size
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| 367 | unsigned long f_frsize; ///< Fragment size (block size)
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| 368 |
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| 369 | fsblkcnt_t f_blocks; ///< Number of blocks
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| 370 | fsblkcnt_t f_bfree; ///< Number of free blocks
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| 371 | fsblkcnt_t f_bavail; ///< Number of free blocks for unprivileged users
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| 372 |
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| 373 | unsigned long f_fsid; ///< Filesystem ID
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| 374 |
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| 375 | unsigned long f_namemax; ///< Maximum filename length
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| 376 | };
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| 377 |
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| 378 | /* The following are dirent.h definitions are declared here to guarantee
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| 379 | * consistency where structure may be different with different toolchains
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| 380 | */
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| 381 | struct dirent {
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| 382 | ino_t d_ino;
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| 383 | off_t d_off;
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| 384 | unsigned short d_reclen;
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| 385 | unsigned char d_type;
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| 386 | char d_name[256];
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| 387 | };
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| 388 |
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| 389 | enum {
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| 390 | DT_UNKNOWN = 0, ///< The file type could not be determined.
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| 391 | DT_FIFO = 1, ///< This is a named pipe (FIFO).
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| 392 | DT_CHR = 2, ///< This is a character device.
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| 393 | DT_DIR = 4, ///< This is a directory.
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| 394 | DT_BLK = 6, ///< This is a block device.
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|---|
| 395 | DT_REG = 8, ///< This is a regular file.
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|---|
| 396 | DT_LNK = 10, ///< This is a symbolic link.
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|---|
| 397 | DT_SOCK = 12, ///< This is a UNIX domain socket.
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|---|
| 398 | };
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|---|
| 399 |
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|---|
| 400 | /* fcntl.h defines */
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|---|
| 401 | #define F_GETFL 3
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|---|
| 402 | #define F_SETFL 4
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|---|
| 403 | #define F_SETOWN 8
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|---|
| 404 |
|
|---|
| 405 | struct pollfd {
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| 406 | int fd;
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|---|
| 407 | short events;
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|---|
| 408 | short revents;
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|---|
| 409 | };
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|---|
| 410 |
|
|---|
| 411 | /* termios.h */
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|---|
| 412 | typedef unsigned char cc_t;
|
|---|
| 413 | typedef unsigned int speed_t;
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|---|
| 414 | typedef unsigned int tcflag_t;
|
|---|
| 415 |
|
|---|
| 416 | #define NCCS 32
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|---|
| 417 |
|
|---|
| 418 | struct termios {
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|---|
| 419 | tcflag_t c_iflag;
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|---|
| 420 | tcflag_t c_oflag;
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|---|
| 421 | tcflag_t c_cflag;
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|---|
| 422 | tcflag_t c_lflag;
|
|---|
| 423 | cc_t c_line;
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|---|
| 424 | cc_t c_cc[NCCS];
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|---|
| 425 | speed_t __c_ispeed;
|
|---|
| 426 | speed_t __c_ospeed;
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|---|
| 427 | };
|
|---|
| 428 |
|
|---|
| 429 | #define ICANON 0000002
|
|---|
| 430 | #define ECHO 0000010
|
|---|
| 431 |
|
|---|
| 432 | #define TCSAFLUSH 2
|
|---|
| 433 |
|
|---|
| 434 | #define DebugBreak() asm("bkpt #0")
|
|---|
| 435 |
|
|---|
| 436 | /* POSIX-compatible I/O functions */
|
|---|
| 437 | #if __cplusplus
|
|---|
| 438 | extern "C" {
|
|---|
| 439 | #endif
|
|---|
| 440 | int open(const char *path, int oflag, ...);
|
|---|
| 441 | #ifndef __IAR_SYSTEMS_ICC__ /* IAR provides fdopen itself */
|
|---|
| 442 | #if __cplusplus
|
|---|
| 443 | std::FILE *fdopen(int fildes, const char *mode);
|
|---|
| 444 | #else
|
|---|
| 445 | FILE *fdopen(int fildes, const char *mode);
|
|---|
| 446 | #endif
|
|---|
| 447 | #endif
|
|---|
| 448 | ssize_t write(int fildes, const void *buf, size_t nbyte);
|
|---|
| 449 | ssize_t read(int fildes, void *buf, size_t nbyte);
|
|---|
| 450 | off_t lseek(int fildes, off_t offset, int whence);
|
|---|
| 451 | int isatty(int fildes);
|
|---|
| 452 | int fsync(int fildes);
|
|---|
| 453 | int fstat(int fildes, struct stat *st);
|
|---|
| 454 | int fcntl(int fildes, int cmd, ...);
|
|---|
| 455 | int poll(struct pollfd fds[], nfds_t nfds, int timeout);
|
|---|
| 456 | int close(int fildes);
|
|---|
| 457 | int stat(const char *path, struct stat *st);
|
|---|
| 458 | int statvfs(const char *path, struct statvfs *buf);
|
|---|
| 459 | DIR *opendir(const char *);
|
|---|
| 460 | struct dirent *readdir(DIR *);
|
|---|
| 461 | int closedir(DIR *);
|
|---|
| 462 | void rewinddir(DIR *);
|
|---|
| 463 | long telldir(DIR *);
|
|---|
| 464 | void seekdir(DIR *, long);
|
|---|
| 465 | int mkdir(const char *name, mode_t n);
|
|---|
| 466 |
|
|---|
| 467 | #if __cplusplus
|
|---|
| 468 | }; // extern "C"
|
|---|
| 469 | #endif // __cplusplus
|
|---|
| 470 |
|
|---|
| 471 | #endif //RETARGET_H
|
|---|
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