Yihui Xiong / mbed-src-nrf51822

customized mbed library sources for nrf51822

Dependents:   Grove_Node Potentiometer BLE_Beacon I2C_Scanner

common/retarget.cpp@0:700cadd8b708, 2014-11-04 (annotated)

Committer:
yihui
Date:
Tue Nov 04 07:38:53 2014 +0000
Revision:
0:700cadd8b708
customized mbed-src library for nrf51822

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 0:700cadd8b708 1 /* mbed Microcontroller Library
yihui 0:700cadd8b708 2 * Copyright (c) 2006-2013 ARM Limited
yihui 0:700cadd8b708 3 *
yihui 0:700cadd8b708 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 0:700cadd8b708 5 * you may not use this file except in compliance with the License.
yihui 0:700cadd8b708 6 * You may obtain a copy of the License at
yihui 0:700cadd8b708 7 *
yihui 0:700cadd8b708 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 0:700cadd8b708 9 *
yihui 0:700cadd8b708 10 * Unless required by applicable law or agreed to in writing, software
yihui 0:700cadd8b708 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 0:700cadd8b708 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 0:700cadd8b708 13 * See the License for the specific language governing permissions and
yihui 0:700cadd8b708 14 * limitations under the License.
yihui 0:700cadd8b708 15 */
yihui 0:700cadd8b708 16 #include "platform.h"
yihui 0:700cadd8b708 17 #include "FileHandle.h"
yihui 0:700cadd8b708 18 #include "FileSystemLike.h"
yihui 0:700cadd8b708 19 #include "FilePath.h"
yihui 0:700cadd8b708 20 #include "serial_api.h"
yihui 0:700cadd8b708 21 #include "toolchain.h"
yihui 0:700cadd8b708 22 #include <errno.h>
yihui 0:700cadd8b708 23
yihui 0:700cadd8b708 24 #if defined(__ARMCC_VERSION)
yihui 0:700cadd8b708 25 # include <rt_sys.h>
yihui 0:700cadd8b708 26 # define PREFIX(x) _sys##x
yihui 0:700cadd8b708 27 # define OPEN_MAX _SYS_OPEN
yihui 0:700cadd8b708 28 # ifdef __MICROLIB
yihui 0:700cadd8b708 29 # pragma import(__use_full_stdio)
yihui 0:700cadd8b708 30 # endif
yihui 0:700cadd8b708 31
yihui 0:700cadd8b708 32 #elif defined(__ICCARM__)
yihui 0:700cadd8b708 33 # include <yfuns.h>
yihui 0:700cadd8b708 34 # define PREFIX(x) _##x
yihui 0:700cadd8b708 35 # define OPEN_MAX 16
yihui 0:700cadd8b708 36
yihui 0:700cadd8b708 37 # define STDIN_FILENO 0
yihui 0:700cadd8b708 38 # define STDOUT_FILENO 1
yihui 0:700cadd8b708 39 # define STDERR_FILENO 2
yihui 0:700cadd8b708 40
yihui 0:700cadd8b708 41 #else
yihui 0:700cadd8b708 42 # include <sys/stat.h>
yihui 0:700cadd8b708 43 # include <sys/unistd.h>
yihui 0:700cadd8b708 44 # include <sys/syslimits.h>
yihui 0:700cadd8b708 45 # define PREFIX(x) x
yihui 0:700cadd8b708 46 #endif
yihui 0:700cadd8b708 47
yihui 0:700cadd8b708 48 using namespace mbed;
yihui 0:700cadd8b708 49
yihui 0:700cadd8b708 50 #if defined(__MICROLIB) && (__ARMCC_VERSION>5030000)
yihui 0:700cadd8b708 51 // Before version 5.03, we were using a patched version of microlib with proper names
yihui 0:700cadd8b708 52 extern const char __stdin_name[] = ":tt";
yihui 0:700cadd8b708 53 extern const char __stdout_name[] = ":tt";
yihui 0:700cadd8b708 54 extern const char __stderr_name[] = ":tt";
yihui 0:700cadd8b708 55
yihui 0:700cadd8b708 56 #else
yihui 0:700cadd8b708 57 extern const char __stdin_name[] = "/stdin";
yihui 0:700cadd8b708 58 extern const char __stdout_name[] = "/stdout";
yihui 0:700cadd8b708 59 extern const char __stderr_name[] = "/stderr";
yihui 0:700cadd8b708 60 #endif
yihui 0:700cadd8b708 61
yihui 0:700cadd8b708 62 /* newlib has the filehandle field in the FILE struct as a short, so
yihui 0:700cadd8b708 63 * we can't just return a Filehandle* from _open and instead have to
yihui 0:700cadd8b708 64 * put it in a filehandles array and return the index into that array
yihui 0:700cadd8b708 65 * (or rather index+3, as filehandles 0-2 are stdin/out/err).
yihui 0:700cadd8b708 66 */
yihui 0:700cadd8b708 67 static FileHandle *filehandles[OPEN_MAX];
yihui 0:700cadd8b708 68
yihui 0:700cadd8b708 69 FileHandle::~FileHandle() {
yihui 0:700cadd8b708 70 /* Remove all open filehandles for this */
yihui 0:700cadd8b708 71 for (unsigned int fh_i = 0; fh_i < sizeof(filehandles)/sizeof(*filehandles); fh_i++) {
yihui 0:700cadd8b708 72 if (filehandles[fh_i] == this) {
yihui 0:700cadd8b708 73 filehandles[fh_i] = NULL;
yihui 0:700cadd8b708 74 }
yihui 0:700cadd8b708 75 }
yihui 0:700cadd8b708 76 }
yihui 0:700cadd8b708 77
yihui 0:700cadd8b708 78 #if DEVICE_SERIAL
yihui 0:700cadd8b708 79 extern int stdio_uart_inited;
yihui 0:700cadd8b708 80 extern serial_t stdio_uart;
yihui 0:700cadd8b708 81 #endif
yihui 0:700cadd8b708 82
yihui 0:700cadd8b708 83 static void init_serial() {
yihui 0:700cadd8b708 84 #if DEVICE_SERIAL
yihui 0:700cadd8b708 85 if (stdio_uart_inited) return;
yihui 0:700cadd8b708 86 serial_init(&stdio_uart, STDIO_UART_TX, STDIO_UART_RX);
yihui 0:700cadd8b708 87 #endif
yihui 0:700cadd8b708 88 }
yihui 0:700cadd8b708 89
yihui 0:700cadd8b708 90 static inline int openmode_to_posix(int openmode) {
yihui 0:700cadd8b708 91 int posix = openmode;
yihui 0:700cadd8b708 92 #ifdef __ARMCC_VERSION
yihui 0:700cadd8b708 93 if (openmode & OPEN_PLUS) {
yihui 0:700cadd8b708 94 posix = O_RDWR;
yihui 0:700cadd8b708 95 } else if(openmode & OPEN_W) {
yihui 0:700cadd8b708 96 posix = O_WRONLY;
yihui 0:700cadd8b708 97 } else if(openmode & OPEN_A) {
yihui 0:700cadd8b708 98 posix = O_WRONLY|O_APPEND;
yihui 0:700cadd8b708 99 } else {
yihui 0:700cadd8b708 100 posix = O_RDONLY;
yihui 0:700cadd8b708 101 }
yihui 0:700cadd8b708 102 /* a, w, a+, w+ all create if file does not already exist */
yihui 0:700cadd8b708 103 if (openmode & (OPEN_A|OPEN_W)) {
yihui 0:700cadd8b708 104 posix |= O_CREAT;
yihui 0:700cadd8b708 105 }
yihui 0:700cadd8b708 106 /* w and w+ truncate */
yihui 0:700cadd8b708 107 if (openmode & OPEN_W) {
yihui 0:700cadd8b708 108 posix |= O_TRUNC;
yihui 0:700cadd8b708 109 }
yihui 0:700cadd8b708 110 #elif defined(__ICCARM__)
yihui 0:700cadd8b708 111 switch (openmode & _LLIO_RDWRMASK) {
yihui 0:700cadd8b708 112 case _LLIO_RDONLY: posix = O_RDONLY; break;
yihui 0:700cadd8b708 113 case _LLIO_WRONLY: posix = O_WRONLY; break;
yihui 0:700cadd8b708 114 case _LLIO_RDWR : posix = O_RDWR ; break;
yihui 0:700cadd8b708 115 }
yihui 0:700cadd8b708 116 if (openmode & _LLIO_CREAT ) posix |= O_CREAT;
yihui 0:700cadd8b708 117 if (openmode & _LLIO_APPEND) posix |= O_APPEND;
yihui 0:700cadd8b708 118 if (openmode & _LLIO_TRUNC ) posix |= O_TRUNC;
yihui 0:700cadd8b708 119 #endif
yihui 0:700cadd8b708 120 return posix;
yihui 0:700cadd8b708 121 }
yihui 0:700cadd8b708 122
yihui 0:700cadd8b708 123 extern "C" FILEHANDLE PREFIX(_open)(const char* name, int openmode) {
yihui 0:700cadd8b708 124 #if defined(__MICROLIB) && (__ARMCC_VERSION>5030000)
yihui 0:700cadd8b708 125 // Before version 5.03, we were using a patched version of microlib with proper names
yihui 0:700cadd8b708 126 // This is the workaround that the microlib author suggested us
yihui 0:700cadd8b708 127 static int n = 0;
yihui 0:700cadd8b708 128 if (!std::strcmp(name, ":tt")) return n++;
yihui 0:700cadd8b708 129
yihui 0:700cadd8b708 130 #else
yihui 0:700cadd8b708 131 /* Use the posix convention that stdin,out,err are filehandles 0,1,2.
yihui 0:700cadd8b708 132 */
yihui 0:700cadd8b708 133 if (std::strcmp(name, __stdin_name) == 0) {
yihui 0:700cadd8b708 134 init_serial();
yihui 0:700cadd8b708 135 return 0;
yihui 0:700cadd8b708 136 } else if (std::strcmp(name, __stdout_name) == 0) {
yihui 0:700cadd8b708 137 init_serial();
yihui 0:700cadd8b708 138 return 1;
yihui 0:700cadd8b708 139 } else if (std::strcmp(name, __stderr_name) == 0) {
yihui 0:700cadd8b708 140 init_serial();
yihui 0:700cadd8b708 141 return 2;
yihui 0:700cadd8b708 142 }
yihui 0:700cadd8b708 143 #endif
yihui 0:700cadd8b708 144
yihui 0:700cadd8b708 145 // find the first empty slot in filehandles
yihui 0:700cadd8b708 146 unsigned int fh_i;
yihui 0:700cadd8b708 147 for (fh_i = 0; fh_i < sizeof(filehandles)/sizeof(*filehandles); fh_i++) {
yihui 0:700cadd8b708 148 if (filehandles[fh_i] == NULL) break;
yihui 0:700cadd8b708 149 }
yihui 0:700cadd8b708 150 if (fh_i >= sizeof(filehandles)/sizeof(*filehandles)) {
yihui 0:700cadd8b708 151 return -1;
yihui 0:700cadd8b708 152 }
yihui 0:700cadd8b708 153
yihui 0:700cadd8b708 154 FileHandle *res;
yihui 0:700cadd8b708 155
yihui 0:700cadd8b708 156 /* FILENAME: ":0x12345678" describes a FileLike* */
yihui 0:700cadd8b708 157 if (name[0] == ':') {
yihui 0:700cadd8b708 158 void *p;
yihui 0:700cadd8b708 159 sscanf(name, ":%p", &p);
yihui 0:700cadd8b708 160 res = (FileHandle*)p;
yihui 0:700cadd8b708 161
yihui 0:700cadd8b708 162 /* FILENAME: "/file_system/file_name" */
yihui 0:700cadd8b708 163 } else {
yihui 0:700cadd8b708 164 FilePath path(name);
yihui 0:700cadd8b708 165
yihui 0:700cadd8b708 166 if (!path.exists())
yihui 0:700cadd8b708 167 return -1;
yihui 0:700cadd8b708 168 else if (path.isFile()) {
yihui 0:700cadd8b708 169 res = path.file();
yihui 0:700cadd8b708 170 } else {
yihui 0:700cadd8b708 171 FileSystemLike *fs = path.fileSystem();
yihui 0:700cadd8b708 172 if (fs == NULL) return -1;
yihui 0:700cadd8b708 173 int posix_mode = openmode_to_posix(openmode);
yihui 0:700cadd8b708 174 res = fs->open(path.fileName(), posix_mode); /* NULL if fails */
yihui 0:700cadd8b708 175 }
yihui 0:700cadd8b708 176 }
yihui 0:700cadd8b708 177
yihui 0:700cadd8b708 178 if (res == NULL) return -1;
yihui 0:700cadd8b708 179 filehandles[fh_i] = res;
yihui 0:700cadd8b708 180
yihui 0:700cadd8b708 181 return fh_i + 3; // +3 as filehandles 0-2 are stdin/out/err
yihui 0:700cadd8b708 182 }
yihui 0:700cadd8b708 183
yihui 0:700cadd8b708 184 extern "C" int PREFIX(_close)(FILEHANDLE fh) {
yihui 0:700cadd8b708 185 if (fh < 3) return 0;
yihui 0:700cadd8b708 186
yihui 0:700cadd8b708 187 FileHandle* fhc = filehandles[fh-3];
yihui 0:700cadd8b708 188 filehandles[fh-3] = NULL;
yihui 0:700cadd8b708 189 if (fhc == NULL) return -1;
yihui 0:700cadd8b708 190
yihui 0:700cadd8b708 191 return fhc->close();
yihui 0:700cadd8b708 192 }
yihui 0:700cadd8b708 193
yihui 0:700cadd8b708 194 #if defined(__ICCARM__)
yihui 0:700cadd8b708 195 extern "C" size_t __write (int fh, const unsigned char *buffer, size_t length) {
yihui 0:700cadd8b708 196 #else
yihui 0:700cadd8b708 197 extern "C" int PREFIX(_write)(FILEHANDLE fh, const unsigned char *buffer, unsigned int length, int mode) {
yihui 0:700cadd8b708 198 #endif
yihui 0:700cadd8b708 199 int n; // n is the number of bytes written
yihui 0:700cadd8b708 200 if (fh < 3) {
yihui 0:700cadd8b708 201 #if DEVICE_SERIAL
yihui 0:700cadd8b708 202 if (!stdio_uart_inited) init_serial();
yihui 0:700cadd8b708 203 for (unsigned int i = 0; i < length; i++) {
yihui 0:700cadd8b708 204 serial_putc(&stdio_uart, buffer[i]);
yihui 0:700cadd8b708 205 }
yihui 0:700cadd8b708 206 #endif
yihui 0:700cadd8b708 207 n = length;
yihui 0:700cadd8b708 208 } else {
yihui 0:700cadd8b708 209 FileHandle* fhc = filehandles[fh-3];
yihui 0:700cadd8b708 210 if (fhc == NULL) return -1;
yihui 0:700cadd8b708 211
yihui 0:700cadd8b708 212 n = fhc->write(buffer, length);
yihui 0:700cadd8b708 213 }
yihui 0:700cadd8b708 214 #ifdef __ARMCC_VERSION
yihui 0:700cadd8b708 215 return length-n;
yihui 0:700cadd8b708 216 #else
yihui 0:700cadd8b708 217 return n;
yihui 0:700cadd8b708 218 #endif
yihui 0:700cadd8b708 219 }
yihui 0:700cadd8b708 220
yihui 0:700cadd8b708 221 #if defined(__ICCARM__)
yihui 0:700cadd8b708 222 extern "C" size_t __read (int fh, unsigned char *buffer, size_t length) {
yihui 0:700cadd8b708 223 #else
yihui 0:700cadd8b708 224 extern "C" int PREFIX(_read)(FILEHANDLE fh, unsigned char *buffer, unsigned int length, int mode) {
yihui 0:700cadd8b708 225 #endif
yihui 0:700cadd8b708 226 int n; // n is the number of bytes read
yihui 0:700cadd8b708 227 if (fh < 3) {
yihui 0:700cadd8b708 228 // only read a character at a time from stdin
yihui 0:700cadd8b708 229 #if DEVICE_SERIAL
yihui 0:700cadd8b708 230 if (!stdio_uart_inited) init_serial();
yihui 0:700cadd8b708 231 *buffer = serial_getc(&stdio_uart);
yihui 0:700cadd8b708 232 #endif
yihui 0:700cadd8b708 233 n = 1;
yihui 0:700cadd8b708 234 } else {
yihui 0:700cadd8b708 235 FileHandle* fhc = filehandles[fh-3];
yihui 0:700cadd8b708 236 if (fhc == NULL) return -1;
yihui 0:700cadd8b708 237
yihui 0:700cadd8b708 238 n = fhc->read(buffer, length);
yihui 0:700cadd8b708 239 }
yihui 0:700cadd8b708 240 #ifdef __ARMCC_VERSION
yihui 0:700cadd8b708 241 return length-n;
yihui 0:700cadd8b708 242 #else
yihui 0:700cadd8b708 243 return n;
yihui 0:700cadd8b708 244 #endif
yihui 0:700cadd8b708 245 }
yihui 0:700cadd8b708 246
yihui 0:700cadd8b708 247 #ifdef __ARMCC_VERSION
yihui 0:700cadd8b708 248 extern "C" int PREFIX(_istty)(FILEHANDLE fh)
yihui 0:700cadd8b708 249 #else
yihui 0:700cadd8b708 250 extern "C" int _isatty(FILEHANDLE fh)
yihui 0:700cadd8b708 251 #endif
yihui 0:700cadd8b708 252 {
yihui 0:700cadd8b708 253 /* stdin, stdout and stderr should be tty */
yihui 0:700cadd8b708 254 if (fh < 3) return 1;
yihui 0:700cadd8b708 255
yihui 0:700cadd8b708 256 FileHandle* fhc = filehandles[fh-3];
yihui 0:700cadd8b708 257 if (fhc == NULL) return -1;
yihui 0:700cadd8b708 258
yihui 0:700cadd8b708 259 return fhc->isatty();
yihui 0:700cadd8b708 260 }
yihui 0:700cadd8b708 261
yihui 0:700cadd8b708 262 extern "C"
yihui 0:700cadd8b708 263 #if defined(__ARMCC_VERSION)
yihui 0:700cadd8b708 264 int _sys_seek(FILEHANDLE fh, long position)
yihui 0:700cadd8b708 265 #elif defined(__ICCARM__)
yihui 0:700cadd8b708 266 long __lseek(int fh, long offset, int whence)
yihui 0:700cadd8b708 267 #else
yihui 0:700cadd8b708 268 int _lseek(FILEHANDLE fh, int offset, int whence)
yihui 0:700cadd8b708 269 #endif
yihui 0:700cadd8b708 270 {
yihui 0:700cadd8b708 271 if (fh < 3) return 0;
yihui 0:700cadd8b708 272
yihui 0:700cadd8b708 273 FileHandle* fhc = filehandles[fh-3];
yihui 0:700cadd8b708 274 if (fhc == NULL) return -1;
yihui 0:700cadd8b708 275
yihui 0:700cadd8b708 276 #if defined(__ARMCC_VERSION)
yihui 0:700cadd8b708 277 return fhc->lseek(position, SEEK_SET);
yihui 0:700cadd8b708 278 #else
yihui 0:700cadd8b708 279 return fhc->lseek(offset, whence);
yihui 0:700cadd8b708 280 #endif
yihui 0:700cadd8b708 281 }
yihui 0:700cadd8b708 282
yihui 0:700cadd8b708 283 #ifdef __ARMCC_VERSION
yihui 0:700cadd8b708 284 extern "C" int PREFIX(_ensure)(FILEHANDLE fh) {
yihui 0:700cadd8b708 285 if (fh < 3) return 0;
yihui 0:700cadd8b708 286
yihui 0:700cadd8b708 287 FileHandle* fhc = filehandles[fh-3];
yihui 0:700cadd8b708 288 if (fhc == NULL) return -1;
yihui 0:700cadd8b708 289
yihui 0:700cadd8b708 290 return fhc->fsync();
yihui 0:700cadd8b708 291 }
yihui 0:700cadd8b708 292
yihui 0:700cadd8b708 293 extern "C" long PREFIX(_flen)(FILEHANDLE fh) {
yihui 0:700cadd8b708 294 if (fh < 3) return 0;
yihui 0:700cadd8b708 295
yihui 0:700cadd8b708 296 FileHandle* fhc = filehandles[fh-3];
yihui 0:700cadd8b708 297 if (fhc == NULL) return -1;
yihui 0:700cadd8b708 298
yihui 0:700cadd8b708 299 return fhc->flen();
yihui 0:700cadd8b708 300 }
yihui 0:700cadd8b708 301 #endif
yihui 0:700cadd8b708 302
yihui 0:700cadd8b708 303
yihui 0:700cadd8b708 304 #if !defined(__ARMCC_VERSION) && !defined(__ICCARM__)
yihui 0:700cadd8b708 305 extern "C" int _fstat(int fd, struct stat *st) {
yihui 0:700cadd8b708 306 if ((STDOUT_FILENO == fd) || (STDERR_FILENO == fd) || (STDIN_FILENO == fd)) {
yihui 0:700cadd8b708 307 st->st_mode = S_IFCHR;
yihui 0:700cadd8b708 308 return 0;
yihui 0:700cadd8b708 309 }
yihui 0:700cadd8b708 310
yihui 0:700cadd8b708 311 errno = EBADF;
yihui 0:700cadd8b708 312 return -1;
yihui 0:700cadd8b708 313 }
yihui 0:700cadd8b708 314 #endif
yihui 0:700cadd8b708 315
yihui 0:700cadd8b708 316 namespace std {
yihui 0:700cadd8b708 317 extern "C" int remove(const char *path) {
yihui 0:700cadd8b708 318 FilePath fp(path);
yihui 0:700cadd8b708 319 FileSystemLike *fs = fp.fileSystem();
yihui 0:700cadd8b708 320 if (fs == NULL) return -1;
yihui 0:700cadd8b708 321
yihui 0:700cadd8b708 322 return fs->remove(fp.fileName());
yihui 0:700cadd8b708 323 }
yihui 0:700cadd8b708 324
yihui 0:700cadd8b708 325 extern "C" int rename(const char *oldname, const char *newname) {
yihui 0:700cadd8b708 326 FilePath fpOld(oldname);
yihui 0:700cadd8b708 327 FilePath fpNew(newname);
yihui 0:700cadd8b708 328 FileSystemLike *fsOld = fpOld.fileSystem();
yihui 0:700cadd8b708 329 FileSystemLike *fsNew = fpNew.fileSystem();
yihui 0:700cadd8b708 330
yihui 0:700cadd8b708 331 /* rename only if both files are on the same FS */
yihui 0:700cadd8b708 332 if (fsOld != fsNew || fsOld == NULL) return -1;
yihui 0:700cadd8b708 333
yihui 0:700cadd8b708 334 return fsOld->rename(fpOld.fileName(), fpNew.fileName());
yihui 0:700cadd8b708 335 }
yihui 0:700cadd8b708 336
yihui 0:700cadd8b708 337 extern "C" char *tmpnam(char *s) {
yihui 0:700cadd8b708 338 return NULL;
yihui 0:700cadd8b708 339 }
yihui 0:700cadd8b708 340
yihui 0:700cadd8b708 341 extern "C" FILE *tmpfile() {
yihui 0:700cadd8b708 342 return NULL;
yihui 0:700cadd8b708 343 }
yihui 0:700cadd8b708 344 } // namespace std
yihui 0:700cadd8b708 345
yihui 0:700cadd8b708 346 #ifdef __ARMCC_VERSION
yihui 0:700cadd8b708 347 extern "C" char *_sys_command_string(char *cmd, int len) {
yihui 0:700cadd8b708 348 return NULL;
yihui 0:700cadd8b708 349 }
yihui 0:700cadd8b708 350 #endif
yihui 0:700cadd8b708 351
yihui 0:700cadd8b708 352 extern "C" DIR *opendir(const char *path) {
yihui 0:700cadd8b708 353 /* root dir is FileSystemLike */
yihui 0:700cadd8b708 354 if (path[0] == '/' && path[1] == 0) {
yihui 0:700cadd8b708 355 return FileSystemLike::opendir();
yihui 0:700cadd8b708 356 }
yihui 0:700cadd8b708 357
yihui 0:700cadd8b708 358 FilePath fp(path);
yihui 0:700cadd8b708 359 FileSystemLike* fs = fp.fileSystem();
yihui 0:700cadd8b708 360 if (fs == NULL) return NULL;
yihui 0:700cadd8b708 361
yihui 0:700cadd8b708 362 return fs->opendir(fp.fileName());
yihui 0:700cadd8b708 363 }
yihui 0:700cadd8b708 364
yihui 0:700cadd8b708 365 extern "C" struct dirent *readdir(DIR *dir) {
yihui 0:700cadd8b708 366 return dir->readdir();
yihui 0:700cadd8b708 367 }
yihui 0:700cadd8b708 368
yihui 0:700cadd8b708 369 extern "C" int closedir(DIR *dir) {
yihui 0:700cadd8b708 370 return dir->closedir();
yihui 0:700cadd8b708 371 }
yihui 0:700cadd8b708 372
yihui 0:700cadd8b708 373 extern "C" void rewinddir(DIR *dir) {
yihui 0:700cadd8b708 374 dir->rewinddir();
yihui 0:700cadd8b708 375 }
yihui 0:700cadd8b708 376
yihui 0:700cadd8b708 377 extern "C" off_t telldir(DIR *dir) {
yihui 0:700cadd8b708 378 return dir->telldir();
yihui 0:700cadd8b708 379 }
yihui 0:700cadd8b708 380
yihui 0:700cadd8b708 381 extern "C" void seekdir(DIR *dir, off_t off) {
yihui 0:700cadd8b708 382 dir->seekdir(off);
yihui 0:700cadd8b708 383 }
yihui 0:700cadd8b708 384
yihui 0:700cadd8b708 385 extern "C" int mkdir(const char *path, mode_t mode) {
yihui 0:700cadd8b708 386 FilePath fp(path);
yihui 0:700cadd8b708 387 FileSystemLike *fs = fp.fileSystem();
yihui 0:700cadd8b708 388 if (fs == NULL) return -1;
yihui 0:700cadd8b708 389
yihui 0:700cadd8b708 390 return fs->mkdir(fp.fileName(), mode);
yihui 0:700cadd8b708 391 }
yihui 0:700cadd8b708 392
yihui 0:700cadd8b708 393 #if defined(TOOLCHAIN_GCC)
yihui 0:700cadd8b708 394 /* prevents the exception handling name demangling code getting pulled in */
yihui 0:700cadd8b708 395 #include "mbed_error.h"
yihui 0:700cadd8b708 396 namespace __gnu_cxx {
yihui 0:700cadd8b708 397 void __verbose_terminate_handler() {
yihui 0:700cadd8b708 398 error("Exception");
yihui 0:700cadd8b708 399 }
yihui 0:700cadd8b708 400 }
yihui 0:700cadd8b708 401 extern "C" WEAK void __cxa_pure_virtual(void);
yihui 0:700cadd8b708 402 extern "C" WEAK void __cxa_pure_virtual(void) {
yihui 0:700cadd8b708 403 exit(1);
yihui 0:700cadd8b708 404 }
yihui 0:700cadd8b708 405
yihui 0:700cadd8b708 406 #endif
yihui 0:700cadd8b708 407
yihui 0:700cadd8b708 408 // ****************************************************************************
yihui 0:700cadd8b708 409 // mbed_main is a function that is called before main()
yihui 0:700cadd8b708 410 // mbed_sdk_init() is also a function that is called before main(), but unlike
yihui 0:700cadd8b708 411 // mbed_main(), it is not meant for user code, but for the SDK itself to perform
yihui 0:700cadd8b708 412 // initializations before main() is called.
yihui 0:700cadd8b708 413
yihui 0:700cadd8b708 414 extern "C" WEAK void mbed_main(void);
yihui 0:700cadd8b708 415 extern "C" WEAK void mbed_main(void) {
yihui 0:700cadd8b708 416 }
yihui 0:700cadd8b708 417
yihui 0:700cadd8b708 418 extern "C" WEAK void mbed_sdk_init(void);
yihui 0:700cadd8b708 419 extern "C" WEAK void mbed_sdk_init(void) {
yihui 0:700cadd8b708 420 }
yihui 0:700cadd8b708 421
yihui 0:700cadd8b708 422 #if defined(TOOLCHAIN_ARM)
yihui 0:700cadd8b708 423 extern "C" int $Super$$main(void);
yihui 0:700cadd8b708 424
yihui 0:700cadd8b708 425 extern "C" int $Sub$$main(void) {
yihui 0:700cadd8b708 426 mbed_sdk_init();
yihui 0:700cadd8b708 427 mbed_main();
yihui 0:700cadd8b708 428 return $Super$$main();
yihui 0:700cadd8b708 429 }
yihui 0:700cadd8b708 430 #elif defined(TOOLCHAIN_GCC)
yihui 0:700cadd8b708 431 extern "C" int __real_main(void);
yihui 0:700cadd8b708 432
yihui 0:700cadd8b708 433 extern "C" int __wrap_main(void) {
yihui 0:700cadd8b708 434 mbed_sdk_init();
yihui 0:700cadd8b708 435 mbed_main();
yihui 0:700cadd8b708 436 return __real_main();
yihui 0:700cadd8b708 437 }
yihui 0:700cadd8b708 438 #elif defined(TOOLCHAIN_IAR)
yihui 0:700cadd8b708 439 // IAR doesn't have the $Super/$Sub mechanism of armcc, nor something equivalent
yihui 0:700cadd8b708 440 // to ld's --wrap. It does have a --redirect, but that doesn't help, since redirecting
yihui 0:700cadd8b708 441 // 'main' to another symbol looses the original 'main' symbol. However, its startup
yihui 0:700cadd8b708 442 // code will call a function to setup argc and argv (__iar_argc_argv) if it is defined.
yihui 0:700cadd8b708 443 // Since mbed doesn't use argc/argv, we use this function to call our mbed_main.
yihui 0:700cadd8b708 444 extern "C" void __iar_argc_argv() {
yihui 0:700cadd8b708 445 mbed_sdk_init();
yihui 0:700cadd8b708 446 mbed_main();
yihui 0:700cadd8b708 447 }
yihui 0:700cadd8b708 448 #endif
yihui 0:700cadd8b708 449
yihui 0:700cadd8b708 450 // Provide implementation of _sbrk (low-level dynamic memory allocation
yihui 0:700cadd8b708 451 // routine) for GCC_ARM which compares new heap pointer with MSP instead of
yihui 0:700cadd8b708 452 // SP. This make it compatible with RTX RTOS thread stacks.
yihui 0:700cadd8b708 453 #if defined(TOOLCHAIN_GCC_ARM)
yihui 0:700cadd8b708 454 // Linker defined symbol used by _sbrk to indicate where heap should start.
yihui 0:700cadd8b708 455 extern "C" int __end__;
yihui 0:700cadd8b708 456
yihui 0:700cadd8b708 457 // Turn off the errno macro and use actual global variable instead.
yihui 0:700cadd8b708 458 #undef errno
yihui 0:700cadd8b708 459 extern "C" int errno;
yihui 0:700cadd8b708 460
yihui 0:700cadd8b708 461 // For ARM7 only
yihui 0:700cadd8b708 462 register unsigned char * stack_ptr __asm ("sp");
yihui 0:700cadd8b708 463
yihui 0:700cadd8b708 464 // Dynamic memory allocation related syscall.
yihui 0:700cadd8b708 465 extern "C" caddr_t _sbrk(int incr) {
yihui 0:700cadd8b708 466 static unsigned char* heap = (unsigned char*)&__end__;
yihui 0:700cadd8b708 467 unsigned char* prev_heap = heap;
yihui 0:700cadd8b708 468 unsigned char* new_heap = heap + incr;
yihui 0:700cadd8b708 469
yihui 0:700cadd8b708 470 #if defined(TARGET_ARM7)
yihui 0:700cadd8b708 471 if (new_heap >= stack_ptr) {
yihui 0:700cadd8b708 472 #else
yihui 0:700cadd8b708 473 if (new_heap >= (unsigned char*)__get_MSP()) {
yihui 0:700cadd8b708 474 #endif
yihui 0:700cadd8b708 475 errno = ENOMEM;
yihui 0:700cadd8b708 476 return (caddr_t)-1;
yihui 0:700cadd8b708 477 }
yihui 0:700cadd8b708 478
yihui 0:700cadd8b708 479 heap = new_heap;
yihui 0:700cadd8b708 480 return (caddr_t) prev_heap;
yihui 0:700cadd8b708 481 }
yihui 0:700cadd8b708 482 #endif