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 |
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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 |
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411 | /* termios.h */
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412 | typedef unsigned char cc_t;
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413 | typedef unsigned int speed_t;
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414 | typedef unsigned int tcflag_t;
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415 |
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416 | #define NCCS 32
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417 |
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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;
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423 | cc_t c_line;
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424 | cc_t c_cc[NCCS];
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425 | speed_t __c_ispeed;
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426 | speed_t __c_ospeed;
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427 | };
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428 |
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429 | #define ICANON 0000002
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430 | #define ECHO 0000010
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431 |
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432 | #define TCSAFLUSH 2
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433 |
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434 | #define DebugBreak() asm("bkpt #0")
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435 |
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436 | /* POSIX-compatible I/O functions */
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437 | #if __cplusplus
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438 | extern "C" {
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439 | #endif
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440 | int open(const char *path, int oflag, ...);
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441 | #ifndef __IAR_SYSTEMS_ICC__ /* IAR provides fdopen itself */
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442 | #if __cplusplus
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443 | std::FILE *fdopen(int fildes, const char *mode);
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444 | #else
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445 | FILE *fdopen(int fildes, const char *mode);
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446 | #endif
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447 | #endif
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448 | ssize_t write(int fildes, const void *buf, size_t nbyte);
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449 | ssize_t read(int fildes, void *buf, size_t nbyte);
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450 | off_t lseek(int fildes, off_t offset, int whence);
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451 | int isatty(int fildes);
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452 | int fsync(int fildes);
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453 | int fstat(int fildes, struct stat *st);
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454 | int fcntl(int fildes, int cmd, ...);
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455 | int poll(struct pollfd fds[], nfds_t nfds, int timeout);
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456 | int close(int fildes);
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457 | int stat(const char *path, struct stat *st);
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458 | int statvfs(const char *path, struct statvfs *buf);
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459 | DIR *opendir(const char *);
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460 | struct dirent *readdir(DIR *);
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461 | int closedir(DIR *);
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462 | void rewinddir(DIR *);
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463 | long telldir(DIR *);
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464 | void seekdir(DIR *, long);
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465 | int mkdir(const char *name, mode_t n);
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466 |
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467 | #if __cplusplus
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468 | }; // extern "C"
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469 | #endif // __cplusplus
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470 |
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471 | #endif //RETARGET_H
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