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mbed_src_STM32F7/common/retarget.cpp@0:aa3fc5ad02f7, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 09:08:29 2019 +0000
Revision:
0:aa3fc5ad02f7
SPKT

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phungductung 0:aa3fc5ad02f7 1 /* mbed Microcontroller Library
phungductung 0:aa3fc5ad02f7 2 * Copyright (c) 2006-2015 ARM Limited
phungductung 0:aa3fc5ad02f7 3 *
phungductung 0:aa3fc5ad02f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
phungductung 0:aa3fc5ad02f7 5 * you may not use this file except in compliance with the License.
phungductung 0:aa3fc5ad02f7 6 * You may obtain a copy of the License at
phungductung 0:aa3fc5ad02f7 7 *
phungductung 0:aa3fc5ad02f7 8 * http://www.apache.org/licenses/LICENSE-2.0
phungductung 0:aa3fc5ad02f7 9 *
phungductung 0:aa3fc5ad02f7 10 * Unless required by applicable law or agreed to in writing, software
phungductung 0:aa3fc5ad02f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
phungductung 0:aa3fc5ad02f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
phungductung 0:aa3fc5ad02f7 13 * See the License for the specific language governing permissions and
phungductung 0:aa3fc5ad02f7 14 * limitations under the License.
phungductung 0:aa3fc5ad02f7 15 */
phungductung 0:aa3fc5ad02f7 16 #include "platform.h"
phungductung 0:aa3fc5ad02f7 17 #include "FileHandle.h"
phungductung 0:aa3fc5ad02f7 18 #include "FileSystemLike.h"
phungductung 0:aa3fc5ad02f7 19 #include "FilePath.h"
phungductung 0:aa3fc5ad02f7 20 #include "serial_api.h"
phungductung 0:aa3fc5ad02f7 21 #include "toolchain.h"
phungductung 0:aa3fc5ad02f7 22 #include "semihost_api.h"
phungductung 0:aa3fc5ad02f7 23 #include "mbed_interface.h"
phungductung 0:aa3fc5ad02f7 24 #if DEVICE_STDIO_MESSAGES
phungductung 0:aa3fc5ad02f7 25 #include <stdio.h>
phungductung 0:aa3fc5ad02f7 26 #endif
phungductung 0:aa3fc5ad02f7 27 #include <errno.h>
phungductung 0:aa3fc5ad02f7 28
phungductung 0:aa3fc5ad02f7 29 #if defined(__ARMCC_VERSION)
phungductung 0:aa3fc5ad02f7 30 # include <rt_sys.h>
phungductung 0:aa3fc5ad02f7 31 # define PREFIX(x) _sys##x
phungductung 0:aa3fc5ad02f7 32 # define OPEN_MAX _SYS_OPEN
phungductung 0:aa3fc5ad02f7 33 # ifdef __MICROLIB
phungductung 0:aa3fc5ad02f7 34 # pragma import(__use_full_stdio)
phungductung 0:aa3fc5ad02f7 35 # endif
phungductung 0:aa3fc5ad02f7 36
phungductung 0:aa3fc5ad02f7 37 #elif defined(__ICCARM__)
phungductung 0:aa3fc5ad02f7 38 # include <yfuns.h>
phungductung 0:aa3fc5ad02f7 39 # define PREFIX(x) _##x
phungductung 0:aa3fc5ad02f7 40 # define OPEN_MAX 16
phungductung 0:aa3fc5ad02f7 41
phungductung 0:aa3fc5ad02f7 42 # define STDIN_FILENO 0
phungductung 0:aa3fc5ad02f7 43 # define STDOUT_FILENO 1
phungductung 0:aa3fc5ad02f7 44 # define STDERR_FILENO 2
phungductung 0:aa3fc5ad02f7 45
phungductung 0:aa3fc5ad02f7 46 #else
phungductung 0:aa3fc5ad02f7 47 # include <sys/stat.h>
phungductung 0:aa3fc5ad02f7 48 # include <sys/unistd.h>
phungductung 0:aa3fc5ad02f7 49 # include <sys/syslimits.h>
phungductung 0:aa3fc5ad02f7 50 # define PREFIX(x) x
phungductung 0:aa3fc5ad02f7 51 #endif
phungductung 0:aa3fc5ad02f7 52
phungductung 0:aa3fc5ad02f7 53 using namespace mbed;
phungductung 0:aa3fc5ad02f7 54
phungductung 0:aa3fc5ad02f7 55 #if defined(__MICROLIB) && (__ARMCC_VERSION>5030000)
phungductung 0:aa3fc5ad02f7 56 // Before version 5.03, we were using a patched version of microlib with proper names
phungductung 0:aa3fc5ad02f7 57 extern const char __stdin_name[] = ":tt";
phungductung 0:aa3fc5ad02f7 58 extern const char __stdout_name[] = ":tt";
phungductung 0:aa3fc5ad02f7 59 extern const char __stderr_name[] = ":tt";
phungductung 0:aa3fc5ad02f7 60
phungductung 0:aa3fc5ad02f7 61 #else
phungductung 0:aa3fc5ad02f7 62 extern const char __stdin_name[] = "/stdin";
phungductung 0:aa3fc5ad02f7 63 extern const char __stdout_name[] = "/stdout";
phungductung 0:aa3fc5ad02f7 64 extern const char __stderr_name[] = "/stderr";
phungductung 0:aa3fc5ad02f7 65 #endif
phungductung 0:aa3fc5ad02f7 66
phungductung 0:aa3fc5ad02f7 67 /* newlib has the filehandle field in the FILE struct as a short, so
phungductung 0:aa3fc5ad02f7 68 * we can't just return a Filehandle* from _open and instead have to
phungductung 0:aa3fc5ad02f7 69 * put it in a filehandles array and return the index into that array
phungductung 0:aa3fc5ad02f7 70 * (or rather index+3, as filehandles 0-2 are stdin/out/err).
phungductung 0:aa3fc5ad02f7 71 */
phungductung 0:aa3fc5ad02f7 72 static FileHandle *filehandles[OPEN_MAX];
phungductung 0:aa3fc5ad02f7 73
phungductung 0:aa3fc5ad02f7 74 FileHandle::~FileHandle() {
phungductung 0:aa3fc5ad02f7 75 /* Remove all open filehandles for this */
phungductung 0:aa3fc5ad02f7 76 for (unsigned int fh_i = 0; fh_i < sizeof(filehandles)/sizeof(*filehandles); fh_i++) {
phungductung 0:aa3fc5ad02f7 77 if (filehandles[fh_i] == this) {
phungductung 0:aa3fc5ad02f7 78 filehandles[fh_i] = NULL;
phungductung 0:aa3fc5ad02f7 79 }
phungductung 0:aa3fc5ad02f7 80 }
phungductung 0:aa3fc5ad02f7 81 }
phungductung 0:aa3fc5ad02f7 82
phungductung 0:aa3fc5ad02f7 83 #if DEVICE_SERIAL
phungductung 0:aa3fc5ad02f7 84 extern int stdio_uart_inited;
phungductung 0:aa3fc5ad02f7 85 extern serial_t stdio_uart;
phungductung 0:aa3fc5ad02f7 86 #endif
phungductung 0:aa3fc5ad02f7 87
phungductung 0:aa3fc5ad02f7 88 static void init_serial() {
phungductung 0:aa3fc5ad02f7 89 #if DEVICE_SERIAL
phungductung 0:aa3fc5ad02f7 90 if (stdio_uart_inited) return;
phungductung 0:aa3fc5ad02f7 91 serial_init(&stdio_uart, STDIO_UART_TX, STDIO_UART_RX);
phungductung 0:aa3fc5ad02f7 92 #endif
phungductung 0:aa3fc5ad02f7 93 }
phungductung 0:aa3fc5ad02f7 94
phungductung 0:aa3fc5ad02f7 95 static inline int openmode_to_posix(int openmode) {
phungductung 0:aa3fc5ad02f7 96 int posix = openmode;
phungductung 0:aa3fc5ad02f7 97 #ifdef __ARMCC_VERSION
phungductung 0:aa3fc5ad02f7 98 if (openmode & OPEN_PLUS) {
phungductung 0:aa3fc5ad02f7 99 posix = O_RDWR;
phungductung 0:aa3fc5ad02f7 100 } else if(openmode & OPEN_W) {
phungductung 0:aa3fc5ad02f7 101 posix = O_WRONLY;
phungductung 0:aa3fc5ad02f7 102 } else if(openmode & OPEN_A) {
phungductung 0:aa3fc5ad02f7 103 posix = O_WRONLY|O_APPEND;
phungductung 0:aa3fc5ad02f7 104 } else {
phungductung 0:aa3fc5ad02f7 105 posix = O_RDONLY;
phungductung 0:aa3fc5ad02f7 106 }
phungductung 0:aa3fc5ad02f7 107 /* a, w, a+, w+ all create if file does not already exist */
phungductung 0:aa3fc5ad02f7 108 if (openmode & (OPEN_A|OPEN_W)) {
phungductung 0:aa3fc5ad02f7 109 posix |= O_CREAT;
phungductung 0:aa3fc5ad02f7 110 }
phungductung 0:aa3fc5ad02f7 111 /* w and w+ truncate */
phungductung 0:aa3fc5ad02f7 112 if (openmode & OPEN_W) {
phungductung 0:aa3fc5ad02f7 113 posix |= O_TRUNC;
phungductung 0:aa3fc5ad02f7 114 }
phungductung 0:aa3fc5ad02f7 115 #elif defined(__ICCARM__)
phungductung 0:aa3fc5ad02f7 116 switch (openmode & _LLIO_RDWRMASK) {
phungductung 0:aa3fc5ad02f7 117 case _LLIO_RDONLY: posix = O_RDONLY; break;
phungductung 0:aa3fc5ad02f7 118 case _LLIO_WRONLY: posix = O_WRONLY; break;
phungductung 0:aa3fc5ad02f7 119 case _LLIO_RDWR : posix = O_RDWR ; break;
phungductung 0:aa3fc5ad02f7 120 }
phungductung 0:aa3fc5ad02f7 121 if (openmode & _LLIO_CREAT ) posix |= O_CREAT;
phungductung 0:aa3fc5ad02f7 122 if (openmode & _LLIO_APPEND) posix |= O_APPEND;
phungductung 0:aa3fc5ad02f7 123 if (openmode & _LLIO_TRUNC ) posix |= O_TRUNC;
phungductung 0:aa3fc5ad02f7 124 #elif defined(TOOLCHAIN_GCC)
phungductung 0:aa3fc5ad02f7 125 posix &= ~O_BINARY;
phungductung 0:aa3fc5ad02f7 126 #endif
phungductung 0:aa3fc5ad02f7 127 return posix;
phungductung 0:aa3fc5ad02f7 128 }
phungductung 0:aa3fc5ad02f7 129
phungductung 0:aa3fc5ad02f7 130 extern "C" FILEHANDLE PREFIX(_open)(const char* name, int openmode) {
phungductung 0:aa3fc5ad02f7 131 #if defined(__MICROLIB) && (__ARMCC_VERSION>5030000)
phungductung 0:aa3fc5ad02f7 132 // Before version 5.03, we were using a patched version of microlib with proper names
phungductung 0:aa3fc5ad02f7 133 // This is the workaround that the microlib author suggested us
phungductung 0:aa3fc5ad02f7 134 static int n = 0;
phungductung 0:aa3fc5ad02f7 135 if (!std::strcmp(name, ":tt")) return n++;
phungductung 0:aa3fc5ad02f7 136
phungductung 0:aa3fc5ad02f7 137 #else
phungductung 0:aa3fc5ad02f7 138 /* Use the posix convention that stdin,out,err are filehandles 0,1,2.
phungductung 0:aa3fc5ad02f7 139 */
phungductung 0:aa3fc5ad02f7 140 if (std::strcmp(name, __stdin_name) == 0) {
phungductung 0:aa3fc5ad02f7 141 init_serial();
phungductung 0:aa3fc5ad02f7 142 return 0;
phungductung 0:aa3fc5ad02f7 143 } else if (std::strcmp(name, __stdout_name) == 0) {
phungductung 0:aa3fc5ad02f7 144 init_serial();
phungductung 0:aa3fc5ad02f7 145 return 1;
phungductung 0:aa3fc5ad02f7 146 } else if (std::strcmp(name, __stderr_name) == 0) {
phungductung 0:aa3fc5ad02f7 147 init_serial();
phungductung 0:aa3fc5ad02f7 148 return 2;
phungductung 0:aa3fc5ad02f7 149 }
phungductung 0:aa3fc5ad02f7 150 #endif
phungductung 0:aa3fc5ad02f7 151
phungductung 0:aa3fc5ad02f7 152 // find the first empty slot in filehandles
phungductung 0:aa3fc5ad02f7 153 unsigned int fh_i;
phungductung 0:aa3fc5ad02f7 154 for (fh_i = 0; fh_i < sizeof(filehandles)/sizeof(*filehandles); fh_i++) {
phungductung 0:aa3fc5ad02f7 155 if (filehandles[fh_i] == NULL) break;
phungductung 0:aa3fc5ad02f7 156 }
phungductung 0:aa3fc5ad02f7 157 if (fh_i >= sizeof(filehandles)/sizeof(*filehandles)) {
phungductung 0:aa3fc5ad02f7 158 return -1;
phungductung 0:aa3fc5ad02f7 159 }
phungductung 0:aa3fc5ad02f7 160
phungductung 0:aa3fc5ad02f7 161 FileHandle *res;
phungductung 0:aa3fc5ad02f7 162
phungductung 0:aa3fc5ad02f7 163 /* FILENAME: ":0x12345678" describes a FileLike* */
phungductung 0:aa3fc5ad02f7 164 if (name[0] == ':') {
phungductung 0:aa3fc5ad02f7 165 void *p;
phungductung 0:aa3fc5ad02f7 166 sscanf(name, ":%p", &p);
phungductung 0:aa3fc5ad02f7 167 res = (FileHandle*)p;
phungductung 0:aa3fc5ad02f7 168
phungductung 0:aa3fc5ad02f7 169 /* FILENAME: "/file_system/file_name" */
phungductung 0:aa3fc5ad02f7 170 } else {
phungductung 0:aa3fc5ad02f7 171 FilePath path(name);
phungductung 0:aa3fc5ad02f7 172
phungductung 0:aa3fc5ad02f7 173 if (!path.exists())
phungductung 0:aa3fc5ad02f7 174 return -1;
phungductung 0:aa3fc5ad02f7 175 else if (path.isFile()) {
phungductung 0:aa3fc5ad02f7 176 res = path.file();
phungductung 0:aa3fc5ad02f7 177 } else {
phungductung 0:aa3fc5ad02f7 178 FileSystemLike *fs = path.fileSystem();
phungductung 0:aa3fc5ad02f7 179 if (fs == NULL) return -1;
phungductung 0:aa3fc5ad02f7 180 int posix_mode = openmode_to_posix(openmode);
phungductung 0:aa3fc5ad02f7 181 res = fs->open(path.fileName(), posix_mode); /* NULL if fails */
phungductung 0:aa3fc5ad02f7 182 }
phungductung 0:aa3fc5ad02f7 183 }
phungductung 0:aa3fc5ad02f7 184
phungductung 0:aa3fc5ad02f7 185 if (res == NULL) return -1;
phungductung 0:aa3fc5ad02f7 186 filehandles[fh_i] = res;
phungductung 0:aa3fc5ad02f7 187
phungductung 0:aa3fc5ad02f7 188 return fh_i + 3; // +3 as filehandles 0-2 are stdin/out/err
phungductung 0:aa3fc5ad02f7 189 }
phungductung 0:aa3fc5ad02f7 190
phungductung 0:aa3fc5ad02f7 191 extern "C" int PREFIX(_close)(FILEHANDLE fh) {
phungductung 0:aa3fc5ad02f7 192 if (fh < 3) return 0;
phungductung 0:aa3fc5ad02f7 193
phungductung 0:aa3fc5ad02f7 194 FileHandle* fhc = filehandles[fh-3];
phungductung 0:aa3fc5ad02f7 195 filehandles[fh-3] = NULL;
phungductung 0:aa3fc5ad02f7 196 if (fhc == NULL) return -1;
phungductung 0:aa3fc5ad02f7 197
phungductung 0:aa3fc5ad02f7 198 return fhc->close();
phungductung 0:aa3fc5ad02f7 199 }
phungductung 0:aa3fc5ad02f7 200
phungductung 0:aa3fc5ad02f7 201 #if defined(__ICCARM__)
phungductung 0:aa3fc5ad02f7 202 extern "C" size_t __write (int fh, const unsigned char *buffer, size_t length) {
phungductung 0:aa3fc5ad02f7 203 #else
phungductung 0:aa3fc5ad02f7 204 extern "C" int PREFIX(_write)(FILEHANDLE fh, const unsigned char *buffer, unsigned int length, int mode) {
phungductung 0:aa3fc5ad02f7 205 #endif
phungductung 0:aa3fc5ad02f7 206 int n; // n is the number of bytes written
phungductung 0:aa3fc5ad02f7 207 if (fh < 3) {
phungductung 0:aa3fc5ad02f7 208 #if DEVICE_SERIAL
phungductung 0:aa3fc5ad02f7 209 if (!stdio_uart_inited) init_serial();
phungductung 0:aa3fc5ad02f7 210 for (unsigned int i = 0; i < length; i++) {
phungductung 0:aa3fc5ad02f7 211 serial_putc(&stdio_uart, buffer[i]);
phungductung 0:aa3fc5ad02f7 212 }
phungductung 0:aa3fc5ad02f7 213 #endif
phungductung 0:aa3fc5ad02f7 214 n = length;
phungductung 0:aa3fc5ad02f7 215 } else {
phungductung 0:aa3fc5ad02f7 216 FileHandle* fhc = filehandles[fh-3];
phungductung 0:aa3fc5ad02f7 217 if (fhc == NULL) return -1;
phungductung 0:aa3fc5ad02f7 218
phungductung 0:aa3fc5ad02f7 219 n = fhc->write(buffer, length);
phungductung 0:aa3fc5ad02f7 220 }
phungductung 0:aa3fc5ad02f7 221 #ifdef __ARMCC_VERSION
phungductung 0:aa3fc5ad02f7 222 return length-n;
phungductung 0:aa3fc5ad02f7 223 #else
phungductung 0:aa3fc5ad02f7 224 return n;
phungductung 0:aa3fc5ad02f7 225 #endif
phungductung 0:aa3fc5ad02f7 226 }
phungductung 0:aa3fc5ad02f7 227
phungductung 0:aa3fc5ad02f7 228 #if defined(__ICCARM__)
phungductung 0:aa3fc5ad02f7 229 extern "C" size_t __read (int fh, unsigned char *buffer, size_t length) {
phungductung 0:aa3fc5ad02f7 230 #else
phungductung 0:aa3fc5ad02f7 231 extern "C" int PREFIX(_read)(FILEHANDLE fh, unsigned char *buffer, unsigned int length, int mode) {
phungductung 0:aa3fc5ad02f7 232 #endif
phungductung 0:aa3fc5ad02f7 233 int n; // n is the number of bytes read
phungductung 0:aa3fc5ad02f7 234 if (fh < 3) {
phungductung 0:aa3fc5ad02f7 235 // only read a character at a time from stdin
phungductung 0:aa3fc5ad02f7 236 #if DEVICE_SERIAL
phungductung 0:aa3fc5ad02f7 237 if (!stdio_uart_inited) init_serial();
phungductung 0:aa3fc5ad02f7 238 *buffer = serial_getc(&stdio_uart);
phungductung 0:aa3fc5ad02f7 239 #endif
phungductung 0:aa3fc5ad02f7 240 n = 1;
phungductung 0:aa3fc5ad02f7 241 } else {
phungductung 0:aa3fc5ad02f7 242 FileHandle* fhc = filehandles[fh-3];
phungductung 0:aa3fc5ad02f7 243 if (fhc == NULL) return -1;
phungductung 0:aa3fc5ad02f7 244
phungductung 0:aa3fc5ad02f7 245 n = fhc->read(buffer, length);
phungductung 0:aa3fc5ad02f7 246 }
phungductung 0:aa3fc5ad02f7 247 #ifdef __ARMCC_VERSION
phungductung 0:aa3fc5ad02f7 248 return length-n;
phungductung 0:aa3fc5ad02f7 249 #else
phungductung 0:aa3fc5ad02f7 250 return n;
phungductung 0:aa3fc5ad02f7 251 #endif
phungductung 0:aa3fc5ad02f7 252 }
phungductung 0:aa3fc5ad02f7 253
phungductung 0:aa3fc5ad02f7 254 #ifdef __ARMCC_VERSION
phungductung 0:aa3fc5ad02f7 255 extern "C" int PREFIX(_istty)(FILEHANDLE fh)
phungductung 0:aa3fc5ad02f7 256 #else
phungductung 0:aa3fc5ad02f7 257 extern "C" int _isatty(FILEHANDLE fh)
phungductung 0:aa3fc5ad02f7 258 #endif
phungductung 0:aa3fc5ad02f7 259 {
phungductung 0:aa3fc5ad02f7 260 /* stdin, stdout and stderr should be tty */
phungductung 0:aa3fc5ad02f7 261 if (fh < 3) return 1;
phungductung 0:aa3fc5ad02f7 262
phungductung 0:aa3fc5ad02f7 263 FileHandle* fhc = filehandles[fh-3];
phungductung 0:aa3fc5ad02f7 264 if (fhc == NULL) return -1;
phungductung 0:aa3fc5ad02f7 265
phungductung 0:aa3fc5ad02f7 266 return fhc->isatty();
phungductung 0:aa3fc5ad02f7 267 }
phungductung 0:aa3fc5ad02f7 268
phungductung 0:aa3fc5ad02f7 269 extern "C"
phungductung 0:aa3fc5ad02f7 270 #if defined(__ARMCC_VERSION)
phungductung 0:aa3fc5ad02f7 271 int _sys_seek(FILEHANDLE fh, long position)
phungductung 0:aa3fc5ad02f7 272 #elif defined(__ICCARM__)
phungductung 0:aa3fc5ad02f7 273 long __lseek(int fh, long offset, int whence)
phungductung 0:aa3fc5ad02f7 274 #else
phungductung 0:aa3fc5ad02f7 275 int _lseek(FILEHANDLE fh, int offset, int whence)
phungductung 0:aa3fc5ad02f7 276 #endif
phungductung 0:aa3fc5ad02f7 277 {
phungductung 0:aa3fc5ad02f7 278 if (fh < 3) return 0;
phungductung 0:aa3fc5ad02f7 279
phungductung 0:aa3fc5ad02f7 280 FileHandle* fhc = filehandles[fh-3];
phungductung 0:aa3fc5ad02f7 281 if (fhc == NULL) return -1;
phungductung 0:aa3fc5ad02f7 282
phungductung 0:aa3fc5ad02f7 283 #if defined(__ARMCC_VERSION)
phungductung 0:aa3fc5ad02f7 284 return fhc->lseek(position, SEEK_SET);
phungductung 0:aa3fc5ad02f7 285 #else
phungductung 0:aa3fc5ad02f7 286 return fhc->lseek(offset, whence);
phungductung 0:aa3fc5ad02f7 287 #endif
phungductung 0:aa3fc5ad02f7 288 }
phungductung 0:aa3fc5ad02f7 289
phungductung 0:aa3fc5ad02f7 290 #ifdef __ARMCC_VERSION
phungductung 0:aa3fc5ad02f7 291 extern "C" int PREFIX(_ensure)(FILEHANDLE fh) {
phungductung 0:aa3fc5ad02f7 292 if (fh < 3) return 0;
phungductung 0:aa3fc5ad02f7 293
phungductung 0:aa3fc5ad02f7 294 FileHandle* fhc = filehandles[fh-3];
phungductung 0:aa3fc5ad02f7 295 if (fhc == NULL) return -1;
phungductung 0:aa3fc5ad02f7 296
phungductung 0:aa3fc5ad02f7 297 return fhc->fsync();
phungductung 0:aa3fc5ad02f7 298 }
phungductung 0:aa3fc5ad02f7 299
phungductung 0:aa3fc5ad02f7 300 extern "C" long PREFIX(_flen)(FILEHANDLE fh) {
phungductung 0:aa3fc5ad02f7 301 if (fh < 3) return 0;
phungductung 0:aa3fc5ad02f7 302
phungductung 0:aa3fc5ad02f7 303 FileHandle* fhc = filehandles[fh-3];
phungductung 0:aa3fc5ad02f7 304 if (fhc == NULL) return -1;
phungductung 0:aa3fc5ad02f7 305
phungductung 0:aa3fc5ad02f7 306 return fhc->flen();
phungductung 0:aa3fc5ad02f7 307 }
phungductung 0:aa3fc5ad02f7 308 #endif
phungductung 0:aa3fc5ad02f7 309
phungductung 0:aa3fc5ad02f7 310
phungductung 0:aa3fc5ad02f7 311 #if !defined(__ARMCC_VERSION) && !defined(__ICCARM__)
phungductung 0:aa3fc5ad02f7 312 extern "C" int _fstat(int fd, struct stat *st) {
phungductung 0:aa3fc5ad02f7 313 if ((STDOUT_FILENO == fd) || (STDERR_FILENO == fd) || (STDIN_FILENO == fd)) {
phungductung 0:aa3fc5ad02f7 314 st->st_mode = S_IFCHR;
phungductung 0:aa3fc5ad02f7 315 return 0;
phungductung 0:aa3fc5ad02f7 316 }
phungductung 0:aa3fc5ad02f7 317
phungductung 0:aa3fc5ad02f7 318 errno = EBADF;
phungductung 0:aa3fc5ad02f7 319 return -1;
phungductung 0:aa3fc5ad02f7 320 }
phungductung 0:aa3fc5ad02f7 321 #endif
phungductung 0:aa3fc5ad02f7 322
phungductung 0:aa3fc5ad02f7 323 namespace std {
phungductung 0:aa3fc5ad02f7 324 extern "C" int remove(const char *path) {
phungductung 0:aa3fc5ad02f7 325 FilePath fp(path);
phungductung 0:aa3fc5ad02f7 326 FileSystemLike *fs = fp.fileSystem();
phungductung 0:aa3fc5ad02f7 327 if (fs == NULL) return -1;
phungductung 0:aa3fc5ad02f7 328
phungductung 0:aa3fc5ad02f7 329 return fs->remove(fp.fileName());
phungductung 0:aa3fc5ad02f7 330 }
phungductung 0:aa3fc5ad02f7 331
phungductung 0:aa3fc5ad02f7 332 extern "C" int rename(const char *oldname, const char *newname) {
phungductung 0:aa3fc5ad02f7 333 FilePath fpOld(oldname);
phungductung 0:aa3fc5ad02f7 334 FilePath fpNew(newname);
phungductung 0:aa3fc5ad02f7 335 FileSystemLike *fsOld = fpOld.fileSystem();
phungductung 0:aa3fc5ad02f7 336 FileSystemLike *fsNew = fpNew.fileSystem();
phungductung 0:aa3fc5ad02f7 337
phungductung 0:aa3fc5ad02f7 338 /* rename only if both files are on the same FS */
phungductung 0:aa3fc5ad02f7 339 if (fsOld != fsNew || fsOld == NULL) return -1;
phungductung 0:aa3fc5ad02f7 340
phungductung 0:aa3fc5ad02f7 341 return fsOld->rename(fpOld.fileName(), fpNew.fileName());
phungductung 0:aa3fc5ad02f7 342 }
phungductung 0:aa3fc5ad02f7 343
phungductung 0:aa3fc5ad02f7 344 extern "C" char *tmpnam(char *s) {
phungductung 0:aa3fc5ad02f7 345 return NULL;
phungductung 0:aa3fc5ad02f7 346 }
phungductung 0:aa3fc5ad02f7 347
phungductung 0:aa3fc5ad02f7 348 extern "C" FILE *tmpfile() {
phungductung 0:aa3fc5ad02f7 349 return NULL;
phungductung 0:aa3fc5ad02f7 350 }
phungductung 0:aa3fc5ad02f7 351 } // namespace std
phungductung 0:aa3fc5ad02f7 352
phungductung 0:aa3fc5ad02f7 353 #ifdef __ARMCC_VERSION
phungductung 0:aa3fc5ad02f7 354 extern "C" char *_sys_command_string(char *cmd, int len) {
phungductung 0:aa3fc5ad02f7 355 return NULL;
phungductung 0:aa3fc5ad02f7 356 }
phungductung 0:aa3fc5ad02f7 357 #endif
phungductung 0:aa3fc5ad02f7 358
phungductung 0:aa3fc5ad02f7 359 extern "C" DIR *opendir(const char *path) {
phungductung 0:aa3fc5ad02f7 360 /* root dir is FileSystemLike */
phungductung 0:aa3fc5ad02f7 361 if (path[0] == '/' && path[1] == 0) {
phungductung 0:aa3fc5ad02f7 362 return FileSystemLike::opendir();
phungductung 0:aa3fc5ad02f7 363 }
phungductung 0:aa3fc5ad02f7 364
phungductung 0:aa3fc5ad02f7 365 FilePath fp(path);
phungductung 0:aa3fc5ad02f7 366 FileSystemLike* fs = fp.fileSystem();
phungductung 0:aa3fc5ad02f7 367 if (fs == NULL) return NULL;
phungductung 0:aa3fc5ad02f7 368
phungductung 0:aa3fc5ad02f7 369 return fs->opendir(fp.fileName());
phungductung 0:aa3fc5ad02f7 370 }
phungductung 0:aa3fc5ad02f7 371
phungductung 0:aa3fc5ad02f7 372 extern "C" struct dirent *readdir(DIR *dir) {
phungductung 0:aa3fc5ad02f7 373 return dir->readdir();
phungductung 0:aa3fc5ad02f7 374 }
phungductung 0:aa3fc5ad02f7 375
phungductung 0:aa3fc5ad02f7 376 extern "C" int closedir(DIR *dir) {
phungductung 0:aa3fc5ad02f7 377 return dir->closedir();
phungductung 0:aa3fc5ad02f7 378 }
phungductung 0:aa3fc5ad02f7 379
phungductung 0:aa3fc5ad02f7 380 extern "C" void rewinddir(DIR *dir) {
phungductung 0:aa3fc5ad02f7 381 dir->rewinddir();
phungductung 0:aa3fc5ad02f7 382 }
phungductung 0:aa3fc5ad02f7 383
phungductung 0:aa3fc5ad02f7 384 extern "C" off_t telldir(DIR *dir) {
phungductung 0:aa3fc5ad02f7 385 return dir->telldir();
phungductung 0:aa3fc5ad02f7 386 }
phungductung 0:aa3fc5ad02f7 387
phungductung 0:aa3fc5ad02f7 388 extern "C" void seekdir(DIR *dir, off_t off) {
phungductung 0:aa3fc5ad02f7 389 dir->seekdir(off);
phungductung 0:aa3fc5ad02f7 390 }
phungductung 0:aa3fc5ad02f7 391
phungductung 0:aa3fc5ad02f7 392 extern "C" int mkdir(const char *path, mode_t mode) {
phungductung 0:aa3fc5ad02f7 393 FilePath fp(path);
phungductung 0:aa3fc5ad02f7 394 FileSystemLike *fs = fp.fileSystem();
phungductung 0:aa3fc5ad02f7 395 if (fs == NULL) return -1;
phungductung 0:aa3fc5ad02f7 396
phungductung 0:aa3fc5ad02f7 397 return fs->mkdir(fp.fileName(), mode);
phungductung 0:aa3fc5ad02f7 398 }
phungductung 0:aa3fc5ad02f7 399
phungductung 0:aa3fc5ad02f7 400 #if defined(TOOLCHAIN_GCC)
phungductung 0:aa3fc5ad02f7 401 /* prevents the exception handling name demangling code getting pulled in */
phungductung 0:aa3fc5ad02f7 402 #include "mbed_error.h"
phungductung 0:aa3fc5ad02f7 403 namespace __gnu_cxx {
phungductung 0:aa3fc5ad02f7 404 void __verbose_terminate_handler() {
phungductung 0:aa3fc5ad02f7 405 error("Exception");
phungductung 0:aa3fc5ad02f7 406 }
phungductung 0:aa3fc5ad02f7 407 }
phungductung 0:aa3fc5ad02f7 408 extern "C" WEAK void __cxa_pure_virtual(void);
phungductung 0:aa3fc5ad02f7 409 extern "C" WEAK void __cxa_pure_virtual(void) {
phungductung 0:aa3fc5ad02f7 410 exit(1);
phungductung 0:aa3fc5ad02f7 411 }
phungductung 0:aa3fc5ad02f7 412
phungductung 0:aa3fc5ad02f7 413 #endif
phungductung 0:aa3fc5ad02f7 414
phungductung 0:aa3fc5ad02f7 415 // ****************************************************************************
phungductung 0:aa3fc5ad02f7 416 // mbed_main is a function that is called before main()
phungductung 0:aa3fc5ad02f7 417 // mbed_sdk_init() is also a function that is called before main(), but unlike
phungductung 0:aa3fc5ad02f7 418 // mbed_main(), it is not meant for user code, but for the SDK itself to perform
phungductung 0:aa3fc5ad02f7 419 // initializations before main() is called.
phungductung 0:aa3fc5ad02f7 420
phungductung 0:aa3fc5ad02f7 421 extern "C" WEAK void mbed_main(void);
phungductung 0:aa3fc5ad02f7 422 extern "C" WEAK void mbed_main(void) {
phungductung 0:aa3fc5ad02f7 423 }
phungductung 0:aa3fc5ad02f7 424
phungductung 0:aa3fc5ad02f7 425 extern "C" WEAK void mbed_sdk_init(void);
phungductung 0:aa3fc5ad02f7 426 extern "C" WEAK void mbed_sdk_init(void) {
phungductung 0:aa3fc5ad02f7 427 }
phungductung 0:aa3fc5ad02f7 428
phungductung 0:aa3fc5ad02f7 429 #if defined(TOOLCHAIN_ARM)
phungductung 0:aa3fc5ad02f7 430 extern "C" int $Super$$main(void);
phungductung 0:aa3fc5ad02f7 431
phungductung 0:aa3fc5ad02f7 432 extern "C" int $Sub$$main(void) {
phungductung 0:aa3fc5ad02f7 433 mbed_sdk_init();
phungductung 0:aa3fc5ad02f7 434 mbed_main();
phungductung 0:aa3fc5ad02f7 435 return $Super$$main();
phungductung 0:aa3fc5ad02f7 436 }
phungductung 0:aa3fc5ad02f7 437 #elif defined(TOOLCHAIN_GCC)
phungductung 0:aa3fc5ad02f7 438 extern "C" int __real_main(void);
phungductung 0:aa3fc5ad02f7 439
phungductung 0:aa3fc5ad02f7 440 extern "C" int __wrap_main(void) {
phungductung 0:aa3fc5ad02f7 441 mbed_sdk_init();
phungductung 0:aa3fc5ad02f7 442 mbed_main();
phungductung 0:aa3fc5ad02f7 443 return __real_main();
phungductung 0:aa3fc5ad02f7 444 }
phungductung 0:aa3fc5ad02f7 445 #elif defined(TOOLCHAIN_IAR)
phungductung 0:aa3fc5ad02f7 446 // IAR doesn't have the $Super/$Sub mechanism of armcc, nor something equivalent
phungductung 0:aa3fc5ad02f7 447 // to ld's --wrap. It does have a --redirect, but that doesn't help, since redirecting
phungductung 0:aa3fc5ad02f7 448 // 'main' to another symbol looses the original 'main' symbol. However, its startup
phungductung 0:aa3fc5ad02f7 449 // code will call a function to setup argc and argv (__iar_argc_argv) if it is defined.
phungductung 0:aa3fc5ad02f7 450 // Since mbed doesn't use argc/argv, we use this function to call our mbed_main.
phungductung 0:aa3fc5ad02f7 451 extern "C" void __iar_argc_argv() {
phungductung 0:aa3fc5ad02f7 452 mbed_sdk_init();
phungductung 0:aa3fc5ad02f7 453 mbed_main();
phungductung 0:aa3fc5ad02f7 454 }
phungductung 0:aa3fc5ad02f7 455 #endif
phungductung 0:aa3fc5ad02f7 456
phungductung 0:aa3fc5ad02f7 457 // Provide implementation of _sbrk (low-level dynamic memory allocation
phungductung 0:aa3fc5ad02f7 458 // routine) for GCC_ARM which compares new heap pointer with MSP instead of
phungductung 0:aa3fc5ad02f7 459 // SP. This make it compatible with RTX RTOS thread stacks.
phungductung 0:aa3fc5ad02f7 460 #if defined(TOOLCHAIN_GCC_ARM)
phungductung 0:aa3fc5ad02f7 461 // Linker defined symbol used by _sbrk to indicate where heap should start.
phungductung 0:aa3fc5ad02f7 462 extern "C" int __end__;
phungductung 0:aa3fc5ad02f7 463
phungductung 0:aa3fc5ad02f7 464 #if defined(TARGET_CORTEX_A)
phungductung 0:aa3fc5ad02f7 465 extern "C" uint32_t __HeapLimit;
phungductung 0:aa3fc5ad02f7 466 #endif
phungductung 0:aa3fc5ad02f7 467
phungductung 0:aa3fc5ad02f7 468 // Turn off the errno macro and use actual global variable instead.
phungductung 0:aa3fc5ad02f7 469 #undef errno
phungductung 0:aa3fc5ad02f7 470 extern "C" int errno;
phungductung 0:aa3fc5ad02f7 471
phungductung 0:aa3fc5ad02f7 472 // For ARM7 only
phungductung 0:aa3fc5ad02f7 473 register unsigned char * stack_ptr __asm ("sp");
phungductung 0:aa3fc5ad02f7 474
phungductung 0:aa3fc5ad02f7 475 // Dynamic memory allocation related syscall.
phungductung 0:aa3fc5ad02f7 476 extern "C" caddr_t _sbrk(int incr) {
phungductung 0:aa3fc5ad02f7 477 static unsigned char* heap = (unsigned char*)&__end__;
phungductung 0:aa3fc5ad02f7 478 unsigned char* prev_heap = heap;
phungductung 0:aa3fc5ad02f7 479 unsigned char* new_heap = heap + incr;
phungductung 0:aa3fc5ad02f7 480
phungductung 0:aa3fc5ad02f7 481 #if defined(TARGET_ARM7)
phungductung 0:aa3fc5ad02f7 482 if (new_heap >= stack_ptr) {
phungductung 0:aa3fc5ad02f7 483 #elif defined(TARGET_CORTEX_A)
phungductung 0:aa3fc5ad02f7 484 if (new_heap >= (unsigned char*)&__HeapLimit) { /* __HeapLimit is end of heap section */
phungductung 0:aa3fc5ad02f7 485 #else
phungductung 0:aa3fc5ad02f7 486 if (new_heap >= (unsigned char*)__get_MSP()) {
phungductung 0:aa3fc5ad02f7 487 #endif
phungductung 0:aa3fc5ad02f7 488 errno = ENOMEM;
phungductung 0:aa3fc5ad02f7 489 return (caddr_t)-1;
phungductung 0:aa3fc5ad02f7 490 }
phungductung 0:aa3fc5ad02f7 491
phungductung 0:aa3fc5ad02f7 492 heap = new_heap;
phungductung 0:aa3fc5ad02f7 493 return (caddr_t) prev_heap;
phungductung 0:aa3fc5ad02f7 494 }
phungductung 0:aa3fc5ad02f7 495 #endif
phungductung 0:aa3fc5ad02f7 496
phungductung 0:aa3fc5ad02f7 497
phungductung 0:aa3fc5ad02f7 498 #if defined TOOLCHAIN_GCC_ARM
phungductung 0:aa3fc5ad02f7 499 extern "C" void _exit(int return_code) {
phungductung 0:aa3fc5ad02f7 500 #else
phungductung 0:aa3fc5ad02f7 501 namespace std {
phungductung 0:aa3fc5ad02f7 502 extern "C" void exit(int return_code) {
phungductung 0:aa3fc5ad02f7 503 #endif
phungductung 0:aa3fc5ad02f7 504
phungductung 0:aa3fc5ad02f7 505 #if DEVICE_STDIO_MESSAGES
phungductung 0:aa3fc5ad02f7 506 fflush(stdout);
phungductung 0:aa3fc5ad02f7 507 fflush(stderr);
phungductung 0:aa3fc5ad02f7 508 #endif
phungductung 0:aa3fc5ad02f7 509
phungductung 0:aa3fc5ad02f7 510 #if DEVICE_SEMIHOST
phungductung 0:aa3fc5ad02f7 511 if (mbed_interface_connected()) {
phungductung 0:aa3fc5ad02f7 512 semihost_exit();
phungductung 0:aa3fc5ad02f7 513 }
phungductung 0:aa3fc5ad02f7 514 #endif
phungductung 0:aa3fc5ad02f7 515 if (return_code) {
phungductung 0:aa3fc5ad02f7 516 mbed_die();
phungductung 0:aa3fc5ad02f7 517 }
phungductung 0:aa3fc5ad02f7 518
phungductung 0:aa3fc5ad02f7 519 while (1);
phungductung 0:aa3fc5ad02f7 520 }
phungductung 0:aa3fc5ad02f7 521
phungductung 0:aa3fc5ad02f7 522 #if !defined(TOOLCHAIN_GCC_ARM)
phungductung 0:aa3fc5ad02f7 523 } //namespace std
phungductung 0:aa3fc5ad02f7 524 #endif
phungductung 0:aa3fc5ad02f7 525
phungductung 0:aa3fc5ad02f7 526
phungductung 0:aa3fc5ad02f7 527 namespace mbed {
phungductung 0:aa3fc5ad02f7 528
phungductung 0:aa3fc5ad02f7 529 void mbed_set_unbuffered_stream(FILE *_file) {
phungductung 0:aa3fc5ad02f7 530 #if defined (__ICCARM__)
phungductung 0:aa3fc5ad02f7 531 char buf[2];
phungductung 0:aa3fc5ad02f7 532 std::setvbuf(_file,buf,_IONBF,NULL);
phungductung 0:aa3fc5ad02f7 533 #else
phungductung 0:aa3fc5ad02f7 534 setbuf(_file, NULL);
phungductung 0:aa3fc5ad02f7 535 #endif
phungductung 0:aa3fc5ad02f7 536 }
phungductung 0:aa3fc5ad02f7 537
phungductung 0:aa3fc5ad02f7 538 int mbed_getc(FILE *_file){
phungductung 0:aa3fc5ad02f7 539 #if defined (__ICCARM__)
phungductung 0:aa3fc5ad02f7 540 /*This is only valid for unbuffered streams*/
phungductung 0:aa3fc5ad02f7 541 int res = std::fgetc(_file);
phungductung 0:aa3fc5ad02f7 542 if (res>=0){
phungductung 0:aa3fc5ad02f7 543 _file->_Mode = (unsigned short)(_file->_Mode & ~ 0x1000);/* Unset read mode */
phungductung 0:aa3fc5ad02f7 544 _file->_Rend = _file->_Wend;
phungductung 0:aa3fc5ad02f7 545 _file->_Next = _file->_Wend;
phungductung 0:aa3fc5ad02f7 546 }
phungductung 0:aa3fc5ad02f7 547 return res;
phungductung 0:aa3fc5ad02f7 548 #else
phungductung 0:aa3fc5ad02f7 549 return std::fgetc(_file);
phungductung 0:aa3fc5ad02f7 550 #endif
phungductung 0:aa3fc5ad02f7 551 }
phungductung 0:aa3fc5ad02f7 552
phungductung 0:aa3fc5ad02f7 553 char* mbed_gets(char*s, int size, FILE *_file){
phungductung 0:aa3fc5ad02f7 554 #if defined (__ICCARM__)
phungductung 0:aa3fc5ad02f7 555 /*This is only valid for unbuffered streams*/
phungductung 0:aa3fc5ad02f7 556 char *str = fgets(s,size,_file);
phungductung 0:aa3fc5ad02f7 557 if (str!=NULL){
phungductung 0:aa3fc5ad02f7 558 _file->_Mode = (unsigned short)(_file->_Mode & ~ 0x1000);/* Unset read mode */
phungductung 0:aa3fc5ad02f7 559 _file->_Rend = _file->_Wend;
phungductung 0:aa3fc5ad02f7 560 _file->_Next = _file->_Wend;
phungductung 0:aa3fc5ad02f7 561 }
phungductung 0:aa3fc5ad02f7 562 return str;
phungductung 0:aa3fc5ad02f7 563 #else
phungductung 0:aa3fc5ad02f7 564 return std::fgets(s,size,_file);
phungductung 0:aa3fc5ad02f7 565 #endif
phungductung 0:aa3fc5ad02f7 566 }
phungductung 0:aa3fc5ad02f7 567
phungductung 0:aa3fc5ad02f7 568 } // namespace mbed