Alessandro Angelino / mbed-hal

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Dependencies:   target-freescale

Fork of mbed-hal by Morpheus

common/retarget.cpp@4:473d4af53300, 2016-04-04 (annotated)

Committer:
Alessandro Angelino
Date:
Mon Apr 04 14:24:07 2016 +0100
Revision:
4:473d4af53300
Parent:
0:9c59db1fbc9e 
Fix function to get sp when in unprivileged mode

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:9c59db1fbc9e 1 /* mbed Microcontroller Library
screamer 0:9c59db1fbc9e 2 * Copyright (c) 2006-2015 ARM Limited
screamer 0:9c59db1fbc9e 3 *
screamer 0:9c59db1fbc9e 4 * Licensed under the Apache License, Version 2.0 (the "License");
screamer 0:9c59db1fbc9e 5 * you may not use this file except in compliance with the License.
screamer 0:9c59db1fbc9e 6 * You may obtain a copy of the License at
screamer 0:9c59db1fbc9e 7 *
screamer 0:9c59db1fbc9e 8 * http://www.apache.org/licenses/LICENSE-2.0
screamer 0:9c59db1fbc9e 9 *
screamer 0:9c59db1fbc9e 10 * Unless required by applicable law or agreed to in writing, software
screamer 0:9c59db1fbc9e 11 * distributed under the License is distributed on an "AS IS" BASIS,
screamer 0:9c59db1fbc9e 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
screamer 0:9c59db1fbc9e 13 * See the License for the specific language governing permissions and
screamer 0:9c59db1fbc9e 14 * limitations under the License.
screamer 0:9c59db1fbc9e 15 */
screamer 0:9c59db1fbc9e 16 #include "platform.h"
screamer 0:9c59db1fbc9e 17 #include "FileHandle.h"
screamer 0:9c59db1fbc9e 18 #include "FileSystemLike.h"
screamer 0:9c59db1fbc9e 19 #include "FilePath.h"
screamer 0:9c59db1fbc9e 20 #include "serial_api.h"
screamer 0:9c59db1fbc9e 21 #include "toolchain.h"
screamer 0:9c59db1fbc9e 22 #include "semihost_api.h"
screamer 0:9c59db1fbc9e 23 #include "mbed_interface.h"
screamer 0:9c59db1fbc9e 24 #if DEVICE_STDIO_MESSAGES
screamer 0:9c59db1fbc9e 25 #include <stdio.h>
screamer 0:9c59db1fbc9e 26 #endif
screamer 0:9c59db1fbc9e 27 #include <errno.h>
screamer 0:9c59db1fbc9e 28
screamer 0:9c59db1fbc9e 29 #if defined(__ARMCC_VERSION)
screamer 0:9c59db1fbc9e 30 # include <rt_sys.h>
screamer 0:9c59db1fbc9e 31 # define PREFIX(x) _sys##x
screamer 0:9c59db1fbc9e 32 # define OPEN_MAX _SYS_OPEN
screamer 0:9c59db1fbc9e 33 # ifdef __MICROLIB
screamer 0:9c59db1fbc9e 34 # pragma import(__use_full_stdio)
screamer 0:9c59db1fbc9e 35 # endif
screamer 0:9c59db1fbc9e 36
screamer 0:9c59db1fbc9e 37 #elif defined(__ICCARM__)
screamer 0:9c59db1fbc9e 38 # include <yfuns.h>
screamer 0:9c59db1fbc9e 39 # define PREFIX(x) _##x
screamer 0:9c59db1fbc9e 40 # define OPEN_MAX 16
screamer 0:9c59db1fbc9e 41
screamer 0:9c59db1fbc9e 42 # define STDIN_FILENO 0
screamer 0:9c59db1fbc9e 43 # define STDOUT_FILENO 1
screamer 0:9c59db1fbc9e 44 # define STDERR_FILENO 2
screamer 0:9c59db1fbc9e 45
screamer 0:9c59db1fbc9e 46 #else
screamer 0:9c59db1fbc9e 47 # include <sys/stat.h>
screamer 0:9c59db1fbc9e 48 # include <sys/unistd.h>
screamer 0:9c59db1fbc9e 49 # include <sys/syslimits.h>
screamer 0:9c59db1fbc9e 50 # define PREFIX(x) x
screamer 0:9c59db1fbc9e 51 #endif
screamer 0:9c59db1fbc9e 52
screamer 0:9c59db1fbc9e 53 using namespace mbed;
screamer 0:9c59db1fbc9e 54
screamer 0:9c59db1fbc9e 55 #if defined(__MICROLIB) && (__ARMCC_VERSION>5030000)
screamer 0:9c59db1fbc9e 56 // Before version 5.03, we were using a patched version of microlib with proper names
screamer 0:9c59db1fbc9e 57 extern const char __stdin_name[] = ":tt";
screamer 0:9c59db1fbc9e 58 extern const char __stdout_name[] = ":tt";
screamer 0:9c59db1fbc9e 59 extern const char __stderr_name[] = ":tt";
screamer 0:9c59db1fbc9e 60
screamer 0:9c59db1fbc9e 61 #else
screamer 0:9c59db1fbc9e 62 extern const char __stdin_name[] = "/stdin";
screamer 0:9c59db1fbc9e 63 extern const char __stdout_name[] = "/stdout";
screamer 0:9c59db1fbc9e 64 extern const char __stderr_name[] = "/stderr";
screamer 0:9c59db1fbc9e 65 #endif
screamer 0:9c59db1fbc9e 66
screamer 0:9c59db1fbc9e 67 /* newlib has the filehandle field in the FILE struct as a short, so
screamer 0:9c59db1fbc9e 68 * we can't just return a Filehandle* from _open and instead have to
screamer 0:9c59db1fbc9e 69 * put it in a filehandles array and return the index into that array
screamer 0:9c59db1fbc9e 70 * (or rather index+3, as filehandles 0-2 are stdin/out/err).
screamer 0:9c59db1fbc9e 71 */
screamer 0:9c59db1fbc9e 72 static FileHandle *filehandles[OPEN_MAX];
screamer 0:9c59db1fbc9e 73
screamer 0:9c59db1fbc9e 74 FileHandle::~FileHandle() {
screamer 0:9c59db1fbc9e 75 /* Remove all open filehandles for this */
screamer 0:9c59db1fbc9e 76 for (unsigned int fh_i = 0; fh_i < sizeof(filehandles)/sizeof(*filehandles); fh_i++) {
screamer 0:9c59db1fbc9e 77 if (filehandles[fh_i] == this) {
screamer 0:9c59db1fbc9e 78 filehandles[fh_i] = NULL;
screamer 0:9c59db1fbc9e 79 }
screamer 0:9c59db1fbc9e 80 }
screamer 0:9c59db1fbc9e 81 }
screamer 0:9c59db1fbc9e 82
screamer 0:9c59db1fbc9e 83 #if DEVICE_SERIAL
screamer 0:9c59db1fbc9e 84 extern int stdio_uart_inited;
screamer 0:9c59db1fbc9e 85 extern serial_t stdio_uart;
screamer 0:9c59db1fbc9e 86 #endif
screamer 0:9c59db1fbc9e 87
screamer 0:9c59db1fbc9e 88 static void init_serial() {
screamer 0:9c59db1fbc9e 89 #if DEVICE_SERIAL
screamer 0:9c59db1fbc9e 90 if (stdio_uart_inited) return;
screamer 0:9c59db1fbc9e 91 serial_init(&stdio_uart, STDIO_UART_TX, STDIO_UART_RX);
screamer 0:9c59db1fbc9e 92 #endif
screamer 0:9c59db1fbc9e 93 }
screamer 0:9c59db1fbc9e 94
screamer 0:9c59db1fbc9e 95 static inline int openmode_to_posix(int openmode) {
screamer 0:9c59db1fbc9e 96 int posix = openmode;
screamer 0:9c59db1fbc9e 97 #ifdef __ARMCC_VERSION
screamer 0:9c59db1fbc9e 98 if (openmode & OPEN_PLUS) {
screamer 0:9c59db1fbc9e 99 posix = O_RDWR;
screamer 0:9c59db1fbc9e 100 } else if(openmode & OPEN_W) {
screamer 0:9c59db1fbc9e 101 posix = O_WRONLY;
screamer 0:9c59db1fbc9e 102 } else if(openmode & OPEN_A) {
screamer 0:9c59db1fbc9e 103 posix = O_WRONLY|O_APPEND;
screamer 0:9c59db1fbc9e 104 } else {
screamer 0:9c59db1fbc9e 105 posix = O_RDONLY;
screamer 0:9c59db1fbc9e 106 }
screamer 0:9c59db1fbc9e 107 /* a, w, a+, w+ all create if file does not already exist */
screamer 0:9c59db1fbc9e 108 if (openmode & (OPEN_A|OPEN_W)) {
screamer 0:9c59db1fbc9e 109 posix |= O_CREAT;
screamer 0:9c59db1fbc9e 110 }
screamer 0:9c59db1fbc9e 111 /* w and w+ truncate */
screamer 0:9c59db1fbc9e 112 if (openmode & OPEN_W) {
screamer 0:9c59db1fbc9e 113 posix |= O_TRUNC;
screamer 0:9c59db1fbc9e 114 }
screamer 0:9c59db1fbc9e 115 #elif defined(__ICCARM__)
screamer 0:9c59db1fbc9e 116 switch (openmode & _LLIO_RDWRMASK) {
screamer 0:9c59db1fbc9e 117 case _LLIO_RDONLY: posix = O_RDONLY; break;
screamer 0:9c59db1fbc9e 118 case _LLIO_WRONLY: posix = O_WRONLY; break;
screamer 0:9c59db1fbc9e 119 case _LLIO_RDWR : posix = O_RDWR ; break;
screamer 0:9c59db1fbc9e 120 }
screamer 0:9c59db1fbc9e 121 if (openmode & _LLIO_CREAT ) posix |= O_CREAT;
screamer 0:9c59db1fbc9e 122 if (openmode & _LLIO_APPEND) posix |= O_APPEND;
screamer 0:9c59db1fbc9e 123 if (openmode & _LLIO_TRUNC ) posix |= O_TRUNC;
screamer 0:9c59db1fbc9e 124 #elif defined(TOOLCHAIN_GCC)
screamer 0:9c59db1fbc9e 125 posix &= ~O_BINARY;
screamer 0:9c59db1fbc9e 126 #endif
screamer 0:9c59db1fbc9e 127 return posix;
screamer 0:9c59db1fbc9e 128 }
screamer 0:9c59db1fbc9e 129
screamer 0:9c59db1fbc9e 130 extern "C" FILEHANDLE PREFIX(_open)(const char* name, int openmode) {
screamer 0:9c59db1fbc9e 131 #if defined(__MICROLIB) && (__ARMCC_VERSION>5030000)
screamer 0:9c59db1fbc9e 132 // Before version 5.03, we were using a patched version of microlib with proper names
screamer 0:9c59db1fbc9e 133 // This is the workaround that the microlib author suggested us
screamer 0:9c59db1fbc9e 134 static int n = 0;
screamer 0:9c59db1fbc9e 135 if (!std::strcmp(name, ":tt")) return n++;
screamer 0:9c59db1fbc9e 136
screamer 0:9c59db1fbc9e 137 #else
screamer 0:9c59db1fbc9e 138 /* Use the posix convention that stdin,out,err are filehandles 0,1,2.
screamer 0:9c59db1fbc9e 139 */
screamer 0:9c59db1fbc9e 140 if (std::strcmp(name, __stdin_name) == 0) {
screamer 0:9c59db1fbc9e 141 init_serial();
screamer 0:9c59db1fbc9e 142 return 0;
screamer 0:9c59db1fbc9e 143 } else if (std::strcmp(name, __stdout_name) == 0) {
screamer 0:9c59db1fbc9e 144 init_serial();
screamer 0:9c59db1fbc9e 145 return 1;
screamer 0:9c59db1fbc9e 146 } else if (std::strcmp(name, __stderr_name) == 0) {
screamer 0:9c59db1fbc9e 147 init_serial();
screamer 0:9c59db1fbc9e 148 return 2;
screamer 0:9c59db1fbc9e 149 }
screamer 0:9c59db1fbc9e 150 #endif
screamer 0:9c59db1fbc9e 151
screamer 0:9c59db1fbc9e 152 // find the first empty slot in filehandles
screamer 0:9c59db1fbc9e 153 unsigned int fh_i;
screamer 0:9c59db1fbc9e 154 for (fh_i = 0; fh_i < sizeof(filehandles)/sizeof(*filehandles); fh_i++) {
screamer 0:9c59db1fbc9e 155 if (filehandles[fh_i] == NULL) break;
screamer 0:9c59db1fbc9e 156 }
screamer 0:9c59db1fbc9e 157 if (fh_i >= sizeof(filehandles)/sizeof(*filehandles)) {
screamer 0:9c59db1fbc9e 158 return -1;
screamer 0:9c59db1fbc9e 159 }
screamer 0:9c59db1fbc9e 160
screamer 0:9c59db1fbc9e 161 FileHandle *res;
screamer 0:9c59db1fbc9e 162
screamer 0:9c59db1fbc9e 163 /* FILENAME: ":0x12345678" describes a FileLike* */
screamer 0:9c59db1fbc9e 164 if (name[0] == ':') {
screamer 0:9c59db1fbc9e 165 void *p;
screamer 0:9c59db1fbc9e 166 sscanf(name, ":%p", &p);
screamer 0:9c59db1fbc9e 167 res = (FileHandle*)p;
screamer 0:9c59db1fbc9e 168
screamer 0:9c59db1fbc9e 169 /* FILENAME: "/file_system/file_name" */
screamer 0:9c59db1fbc9e 170 } else {
screamer 0:9c59db1fbc9e 171 FilePath path(name);
screamer 0:9c59db1fbc9e 172
screamer 0:9c59db1fbc9e 173 if (!path.exists())
screamer 0:9c59db1fbc9e 174 return -1;
screamer 0:9c59db1fbc9e 175 else if (path.isFile()) {
screamer 0:9c59db1fbc9e 176 res = path.file();
screamer 0:9c59db1fbc9e 177 } else {
screamer 0:9c59db1fbc9e 178 FileSystemLike *fs = path.fileSystem();
screamer 0:9c59db1fbc9e 179 if (fs == NULL) return -1;
screamer 0:9c59db1fbc9e 180 int posix_mode = openmode_to_posix(openmode);
screamer 0:9c59db1fbc9e 181 res = fs->open(path.fileName(), posix_mode); /* NULL if fails */
screamer 0:9c59db1fbc9e 182 }
screamer 0:9c59db1fbc9e 183 }
screamer 0:9c59db1fbc9e 184
screamer 0:9c59db1fbc9e 185 if (res == NULL) return -1;
screamer 0:9c59db1fbc9e 186 filehandles[fh_i] = res;
screamer 0:9c59db1fbc9e 187
screamer 0:9c59db1fbc9e 188 return fh_i + 3; // +3 as filehandles 0-2 are stdin/out/err
screamer 0:9c59db1fbc9e 189 }
screamer 0:9c59db1fbc9e 190
screamer 0:9c59db1fbc9e 191 extern "C" int PREFIX(_close)(FILEHANDLE fh) {
screamer 0:9c59db1fbc9e 192 if (fh < 3) return 0;
screamer 0:9c59db1fbc9e 193
screamer 0:9c59db1fbc9e 194 FileHandle* fhc = filehandles[fh-3];
screamer 0:9c59db1fbc9e 195 filehandles[fh-3] = NULL;
screamer 0:9c59db1fbc9e 196 if (fhc == NULL) return -1;
screamer 0:9c59db1fbc9e 197
screamer 0:9c59db1fbc9e 198 return fhc->close();
screamer 0:9c59db1fbc9e 199 }
screamer 0:9c59db1fbc9e 200
screamer 0:9c59db1fbc9e 201 #if defined(__ICCARM__)
screamer 0:9c59db1fbc9e 202 extern "C" size_t __write (int fh, const unsigned char *buffer, size_t length) {
screamer 0:9c59db1fbc9e 203 #else
screamer 0:9c59db1fbc9e 204 extern "C" int PREFIX(_write)(FILEHANDLE fh, const unsigned char *buffer, unsigned int length, int mode) {
screamer 0:9c59db1fbc9e 205 #endif
screamer 0:9c59db1fbc9e 206 int n; // n is the number of bytes written
screamer 0:9c59db1fbc9e 207 if (fh < 3) {
screamer 0:9c59db1fbc9e 208 #if DEVICE_SERIAL
screamer 0:9c59db1fbc9e 209 if (!stdio_uart_inited) init_serial();
screamer 0:9c59db1fbc9e 210 for (unsigned int i = 0; i < length; i++) {
screamer 0:9c59db1fbc9e 211 serial_putc(&stdio_uart, buffer[i]);
screamer 0:9c59db1fbc9e 212 }
screamer 0:9c59db1fbc9e 213 #endif
screamer 0:9c59db1fbc9e 214 n = length;
screamer 0:9c59db1fbc9e 215 } else {
screamer 0:9c59db1fbc9e 216 FileHandle* fhc = filehandles[fh-3];
screamer 0:9c59db1fbc9e 217 if (fhc == NULL) return -1;
screamer 0:9c59db1fbc9e 218
screamer 0:9c59db1fbc9e 219 n = fhc->write(buffer, length);
screamer 0:9c59db1fbc9e 220 }
screamer 0:9c59db1fbc9e 221 #ifdef __ARMCC_VERSION
screamer 0:9c59db1fbc9e 222 return length-n;
screamer 0:9c59db1fbc9e 223 #else
screamer 0:9c59db1fbc9e 224 return n;
screamer 0:9c59db1fbc9e 225 #endif
screamer 0:9c59db1fbc9e 226 }
screamer 0:9c59db1fbc9e 227
screamer 0:9c59db1fbc9e 228 #if defined(__ICCARM__)
screamer 0:9c59db1fbc9e 229 extern "C" size_t __read (int fh, unsigned char *buffer, size_t length) {
screamer 0:9c59db1fbc9e 230 #else
screamer 0:9c59db1fbc9e 231 extern "C" int PREFIX(_read)(FILEHANDLE fh, unsigned char *buffer, unsigned int length, int mode) {
screamer 0:9c59db1fbc9e 232 #endif
screamer 0:9c59db1fbc9e 233 int n; // n is the number of bytes read
screamer 0:9c59db1fbc9e 234 if (fh < 3) {
screamer 0:9c59db1fbc9e 235 // only read a character at a time from stdin
screamer 0:9c59db1fbc9e 236 #if DEVICE_SERIAL
screamer 0:9c59db1fbc9e 237 if (!stdio_uart_inited) init_serial();
screamer 0:9c59db1fbc9e 238 *buffer = serial_getc(&stdio_uart);
screamer 0:9c59db1fbc9e 239 #endif
screamer 0:9c59db1fbc9e 240 n = 1;
screamer 0:9c59db1fbc9e 241 } else {
screamer 0:9c59db1fbc9e 242 FileHandle* fhc = filehandles[fh-3];
screamer 0:9c59db1fbc9e 243 if (fhc == NULL) return -1;
screamer 0:9c59db1fbc9e 244
screamer 0:9c59db1fbc9e 245 n = fhc->read(buffer, length);
screamer 0:9c59db1fbc9e 246 }
screamer 0:9c59db1fbc9e 247 #ifdef __ARMCC_VERSION
screamer 0:9c59db1fbc9e 248 return length-n;
screamer 0:9c59db1fbc9e 249 #else
screamer 0:9c59db1fbc9e 250 return n;
screamer 0:9c59db1fbc9e 251 #endif
screamer 0:9c59db1fbc9e 252 }
screamer 0:9c59db1fbc9e 253
screamer 0:9c59db1fbc9e 254 #ifdef __ARMCC_VERSION
screamer 0:9c59db1fbc9e 255 extern "C" int PREFIX(_istty)(FILEHANDLE fh)
screamer 0:9c59db1fbc9e 256 #else
screamer 0:9c59db1fbc9e 257 extern "C" int _isatty(FILEHANDLE fh)
screamer 0:9c59db1fbc9e 258 #endif
screamer 0:9c59db1fbc9e 259 {
screamer 0:9c59db1fbc9e 260 /* stdin, stdout and stderr should be tty */
screamer 0:9c59db1fbc9e 261 if (fh < 3) return 1;
screamer 0:9c59db1fbc9e 262
screamer 0:9c59db1fbc9e 263 FileHandle* fhc = filehandles[fh-3];
screamer 0:9c59db1fbc9e 264 if (fhc == NULL) return -1;
screamer 0:9c59db1fbc9e 265
screamer 0:9c59db1fbc9e 266 return fhc->isatty();
screamer 0:9c59db1fbc9e 267 }
screamer 0:9c59db1fbc9e 268
screamer 0:9c59db1fbc9e 269 extern "C"
screamer 0:9c59db1fbc9e 270 #if defined(__ARMCC_VERSION)
screamer 0:9c59db1fbc9e 271 int _sys_seek(FILEHANDLE fh, long position)
screamer 0:9c59db1fbc9e 272 #elif defined(__ICCARM__)
screamer 0:9c59db1fbc9e 273 long __lseek(int fh, long offset, int whence)
screamer 0:9c59db1fbc9e 274 #else
screamer 0:9c59db1fbc9e 275 int _lseek(FILEHANDLE fh, int offset, int whence)
screamer 0:9c59db1fbc9e 276 #endif
screamer 0:9c59db1fbc9e 277 {
screamer 0:9c59db1fbc9e 278 if (fh < 3) return 0;
screamer 0:9c59db1fbc9e 279
screamer 0:9c59db1fbc9e 280 FileHandle* fhc = filehandles[fh-3];
screamer 0:9c59db1fbc9e 281 if (fhc == NULL) return -1;
screamer 0:9c59db1fbc9e 282
screamer 0:9c59db1fbc9e 283 #if defined(__ARMCC_VERSION)
screamer 0:9c59db1fbc9e 284 return fhc->lseek(position, SEEK_SET);
screamer 0:9c59db1fbc9e 285 #else
screamer 0:9c59db1fbc9e 286 return fhc->lseek(offset, whence);
screamer 0:9c59db1fbc9e 287 #endif
screamer 0:9c59db1fbc9e 288 }
screamer 0:9c59db1fbc9e 289
screamer 0:9c59db1fbc9e 290 #ifdef __ARMCC_VERSION
screamer 0:9c59db1fbc9e 291 extern "C" int PREFIX(_ensure)(FILEHANDLE fh) {
screamer 0:9c59db1fbc9e 292 if (fh < 3) return 0;
screamer 0:9c59db1fbc9e 293
screamer 0:9c59db1fbc9e 294 FileHandle* fhc = filehandles[fh-3];
screamer 0:9c59db1fbc9e 295 if (fhc == NULL) return -1;
screamer 0:9c59db1fbc9e 296
screamer 0:9c59db1fbc9e 297 return fhc->fsync();
screamer 0:9c59db1fbc9e 298 }
screamer 0:9c59db1fbc9e 299
screamer 0:9c59db1fbc9e 300 extern "C" long PREFIX(_flen)(FILEHANDLE fh) {
screamer 0:9c59db1fbc9e 301 if (fh < 3) return 0;
screamer 0:9c59db1fbc9e 302
screamer 0:9c59db1fbc9e 303 FileHandle* fhc = filehandles[fh-3];
screamer 0:9c59db1fbc9e 304 if (fhc == NULL) return -1;
screamer 0:9c59db1fbc9e 305
screamer 0:9c59db1fbc9e 306 return fhc->flen();
screamer 0:9c59db1fbc9e 307 }
screamer 0:9c59db1fbc9e 308 #endif
screamer 0:9c59db1fbc9e 309
screamer 0:9c59db1fbc9e 310
screamer 0:9c59db1fbc9e 311 #if !defined(__ARMCC_VERSION) && !defined(__ICCARM__)
screamer 0:9c59db1fbc9e 312 extern "C" int _fstat(int fd, struct stat *st) {
screamer 0:9c59db1fbc9e 313 if ((STDOUT_FILENO == fd) || (STDERR_FILENO == fd) || (STDIN_FILENO == fd)) {
screamer 0:9c59db1fbc9e 314 st->st_mode = S_IFCHR;
screamer 0:9c59db1fbc9e 315 return 0;
screamer 0:9c59db1fbc9e 316 }
screamer 0:9c59db1fbc9e 317
screamer 0:9c59db1fbc9e 318 errno = EBADF;
screamer 0:9c59db1fbc9e 319 return -1;
screamer 0:9c59db1fbc9e 320 }
screamer 0:9c59db1fbc9e 321 #endif
screamer 0:9c59db1fbc9e 322
screamer 0:9c59db1fbc9e 323 namespace std {
screamer 0:9c59db1fbc9e 324 extern "C" int remove(const char *path) {
screamer 0:9c59db1fbc9e 325 FilePath fp(path);
screamer 0:9c59db1fbc9e 326 FileSystemLike *fs = fp.fileSystem();
screamer 0:9c59db1fbc9e 327 if (fs == NULL) return -1;
screamer 0:9c59db1fbc9e 328
screamer 0:9c59db1fbc9e 329 return fs->remove(fp.fileName());
screamer 0:9c59db1fbc9e 330 }
screamer 0:9c59db1fbc9e 331
screamer 0:9c59db1fbc9e 332 extern "C" int rename(const char *oldname, const char *newname) {
screamer 0:9c59db1fbc9e 333 FilePath fpOld(oldname);
screamer 0:9c59db1fbc9e 334 FilePath fpNew(newname);
screamer 0:9c59db1fbc9e 335 FileSystemLike *fsOld = fpOld.fileSystem();
screamer 0:9c59db1fbc9e 336 FileSystemLike *fsNew = fpNew.fileSystem();
screamer 0:9c59db1fbc9e 337
screamer 0:9c59db1fbc9e 338 /* rename only if both files are on the same FS */
screamer 0:9c59db1fbc9e 339 if (fsOld != fsNew || fsOld == NULL) return -1;
screamer 0:9c59db1fbc9e 340
screamer 0:9c59db1fbc9e 341 return fsOld->rename(fpOld.fileName(), fpNew.fileName());
screamer 0:9c59db1fbc9e 342 }
screamer 0:9c59db1fbc9e 343
screamer 0:9c59db1fbc9e 344 extern "C" char *tmpnam(char *s) {
screamer 0:9c59db1fbc9e 345 return NULL;
screamer 0:9c59db1fbc9e 346 }
screamer 0:9c59db1fbc9e 347
screamer 0:9c59db1fbc9e 348 extern "C" FILE *tmpfile() {
screamer 0:9c59db1fbc9e 349 return NULL;
screamer 0:9c59db1fbc9e 350 }
screamer 0:9c59db1fbc9e 351 } // namespace std
screamer 0:9c59db1fbc9e 352
screamer 0:9c59db1fbc9e 353 #ifdef __ARMCC_VERSION
screamer 0:9c59db1fbc9e 354 extern "C" char *_sys_command_string(char *cmd, int len) {
screamer 0:9c59db1fbc9e 355 return NULL;
screamer 0:9c59db1fbc9e 356 }
screamer 0:9c59db1fbc9e 357 #endif
screamer 0:9c59db1fbc9e 358
screamer 0:9c59db1fbc9e 359 extern "C" DIR *opendir(const char *path) {
screamer 0:9c59db1fbc9e 360 /* root dir is FileSystemLike */
screamer 0:9c59db1fbc9e 361 if (path[0] == '/' && path[1] == 0) {
screamer 0:9c59db1fbc9e 362 return FileSystemLike::opendir();
screamer 0:9c59db1fbc9e 363 }
screamer 0:9c59db1fbc9e 364
screamer 0:9c59db1fbc9e 365 FilePath fp(path);
screamer 0:9c59db1fbc9e 366 FileSystemLike* fs = fp.fileSystem();
screamer 0:9c59db1fbc9e 367 if (fs == NULL) return NULL;
screamer 0:9c59db1fbc9e 368
screamer 0:9c59db1fbc9e 369 return fs->opendir(fp.fileName());
screamer 0:9c59db1fbc9e 370 }
screamer 0:9c59db1fbc9e 371
screamer 0:9c59db1fbc9e 372 extern "C" struct dirent *readdir(DIR *dir) {
screamer 0:9c59db1fbc9e 373 return dir->readdir();
screamer 0:9c59db1fbc9e 374 }
screamer 0:9c59db1fbc9e 375
screamer 0:9c59db1fbc9e 376 extern "C" int closedir(DIR *dir) {
screamer 0:9c59db1fbc9e 377 return dir->closedir();
screamer 0:9c59db1fbc9e 378 }
screamer 0:9c59db1fbc9e 379
screamer 0:9c59db1fbc9e 380 extern "C" void rewinddir(DIR *dir) {
screamer 0:9c59db1fbc9e 381 dir->rewinddir();
screamer 0:9c59db1fbc9e 382 }
screamer 0:9c59db1fbc9e 383
screamer 0:9c59db1fbc9e 384 extern "C" off_t telldir(DIR *dir) {
screamer 0:9c59db1fbc9e 385 return dir->telldir();
screamer 0:9c59db1fbc9e 386 }
screamer 0:9c59db1fbc9e 387
screamer 0:9c59db1fbc9e 388 extern "C" void seekdir(DIR *dir, off_t off) {
screamer 0:9c59db1fbc9e 389 dir->seekdir(off);
screamer 0:9c59db1fbc9e 390 }
screamer 0:9c59db1fbc9e 391
screamer 0:9c59db1fbc9e 392 extern "C" int mkdir(const char *path, mode_t mode) {
screamer 0:9c59db1fbc9e 393 FilePath fp(path);
screamer 0:9c59db1fbc9e 394 FileSystemLike *fs = fp.fileSystem();
screamer 0:9c59db1fbc9e 395 if (fs == NULL) return -1;
screamer 0:9c59db1fbc9e 396
screamer 0:9c59db1fbc9e 397 return fs->mkdir(fp.fileName(), mode);
screamer 0:9c59db1fbc9e 398 }
screamer 0:9c59db1fbc9e 399
screamer 0:9c59db1fbc9e 400 #if defined(TOOLCHAIN_GCC)
screamer 0:9c59db1fbc9e 401 /* prevents the exception handling name demangling code getting pulled in */
screamer 0:9c59db1fbc9e 402 #include "mbed_error.h"
screamer 0:9c59db1fbc9e 403 namespace __gnu_cxx {
screamer 0:9c59db1fbc9e 404 void __verbose_terminate_handler() {
screamer 0:9c59db1fbc9e 405 error("Exception");
screamer 0:9c59db1fbc9e 406 }
screamer 0:9c59db1fbc9e 407 }
screamer 0:9c59db1fbc9e 408 extern "C" WEAK void __cxa_pure_virtual(void);
screamer 0:9c59db1fbc9e 409 extern "C" WEAK void __cxa_pure_virtual(void) {
screamer 0:9c59db1fbc9e 410 exit(1);
screamer 0:9c59db1fbc9e 411 }
screamer 0:9c59db1fbc9e 412
screamer 0:9c59db1fbc9e 413 #endif
screamer 0:9c59db1fbc9e 414
screamer 0:9c59db1fbc9e 415 // ****************************************************************************
screamer 0:9c59db1fbc9e 416 // mbed_main is a function that is called before main()
screamer 0:9c59db1fbc9e 417 // mbed_sdk_init() is also a function that is called before main(), but unlike
screamer 0:9c59db1fbc9e 418 // mbed_main(), it is not meant for user code, but for the SDK itself to perform
screamer 0:9c59db1fbc9e 419 // initializations before main() is called.
screamer 0:9c59db1fbc9e 420
screamer 0:9c59db1fbc9e 421 extern "C" WEAK void mbed_main(void);
screamer 0:9c59db1fbc9e 422 extern "C" WEAK void mbed_main(void) {
screamer 0:9c59db1fbc9e 423 }
screamer 0:9c59db1fbc9e 424
screamer 0:9c59db1fbc9e 425 extern "C" WEAK void mbed_sdk_init(void);
screamer 0:9c59db1fbc9e 426 extern "C" WEAK void mbed_sdk_init(void) {
screamer 0:9c59db1fbc9e 427 }
screamer 0:9c59db1fbc9e 428
screamer 0:9c59db1fbc9e 429 #if defined(TOOLCHAIN_ARM)
screamer 0:9c59db1fbc9e 430 extern "C" int $Super$$main(void);
screamer 0:9c59db1fbc9e 431
screamer 0:9c59db1fbc9e 432 extern "C" int $Sub$$main(void) {
screamer 0:9c59db1fbc9e 433 mbed_sdk_init();
screamer 0:9c59db1fbc9e 434 mbed_main();
screamer 0:9c59db1fbc9e 435 return $Super$$main();
screamer 0:9c59db1fbc9e 436 }
screamer 0:9c59db1fbc9e 437 #elif defined(TOOLCHAIN_GCC)
screamer 0:9c59db1fbc9e 438 extern "C" int __real_main(void);
screamer 0:9c59db1fbc9e 439
screamer 0:9c59db1fbc9e 440 extern "C" int __wrap_main(void) {
screamer 0:9c59db1fbc9e 441 mbed_sdk_init();
screamer 0:9c59db1fbc9e 442 mbed_main();
screamer 0:9c59db1fbc9e 443 return __real_main();
screamer 0:9c59db1fbc9e 444 }
screamer 0:9c59db1fbc9e 445 #elif defined(TOOLCHAIN_IAR)
screamer 0:9c59db1fbc9e 446 // IAR doesn't have the $Super/$Sub mechanism of armcc, nor something equivalent
screamer 0:9c59db1fbc9e 447 // to ld's --wrap. It does have a --redirect, but that doesn't help, since redirecting
screamer 0:9c59db1fbc9e 448 // 'main' to another symbol looses the original 'main' symbol. However, its startup
screamer 0:9c59db1fbc9e 449 // code will call a function to setup argc and argv (__iar_argc_argv) if it is defined.
screamer 0:9c59db1fbc9e 450 // Since mbed doesn't use argc/argv, we use this function to call our mbed_main.
screamer 0:9c59db1fbc9e 451 extern "C" void __iar_argc_argv() {
screamer 0:9c59db1fbc9e 452 mbed_sdk_init();
screamer 0:9c59db1fbc9e 453 mbed_main();
screamer 0:9c59db1fbc9e 454 }
screamer 0:9c59db1fbc9e 455 #endif
screamer 0:9c59db1fbc9e 456
screamer 0:9c59db1fbc9e 457 // Provide implementation of _sbrk (low-level dynamic memory allocation
screamer 0:9c59db1fbc9e 458 // routine) for GCC_ARM which compares new heap pointer with MSP instead of
screamer 0:9c59db1fbc9e 459 // SP. This make it compatible with RTX RTOS thread stacks.
screamer 0:9c59db1fbc9e 460 #if defined(TOOLCHAIN_GCC_ARM)
screamer 0:9c59db1fbc9e 461 // Linker defined symbol used by _sbrk to indicate where heap should start.
screamer 0:9c59db1fbc9e 462 extern "C" int __end__;
screamer 0:9c59db1fbc9e 463
screamer 0:9c59db1fbc9e 464 #if defined(TARGET_CORTEX_A)
screamer 0:9c59db1fbc9e 465 extern "C" uint32_t __HeapLimit;
screamer 0:9c59db1fbc9e 466 #endif
screamer 0:9c59db1fbc9e 467
screamer 0:9c59db1fbc9e 468 // Turn off the errno macro and use actual global variable instead.
screamer 0:9c59db1fbc9e 469 #undef errno
screamer 0:9c59db1fbc9e 470 extern "C" int errno;
screamer 0:9c59db1fbc9e 471
Alessandro Angelino 4:473d4af53300 472 // Stack pointer handling
Alessandro Angelino 4:473d4af53300 473 #ifdef __ICCARM__
Alessandro Angelino 4:473d4af53300 474 #define __current_sp() __get_SP()
Alessandro Angelino 4:473d4af53300 475 #else
Alessandro Angelino 4:473d4af53300 476 static inline unsigned int __current_sp(void)
Alessandro Angelino 4:473d4af53300 477 {
Alessandro Angelino 4:473d4af53300 478 register unsigned sp asm("sp");
Alessandro Angelino 4:473d4af53300 479 return sp;
Alessandro Angelino 4:473d4af53300 480 }
Alessandro Angelino 4:473d4af53300 481 #endif /* __ICCARM__ */
screamer 0:9c59db1fbc9e 482
screamer 0:9c59db1fbc9e 483 // Dynamic memory allocation related syscall.
screamer 0:9c59db1fbc9e 484 extern "C" caddr_t _sbrk(int incr) {
screamer 0:9c59db1fbc9e 485 static unsigned char* heap = (unsigned char*)&__end__;
screamer 0:9c59db1fbc9e 486 unsigned char* prev_heap = heap;
screamer 0:9c59db1fbc9e 487 unsigned char* new_heap = heap + incr;
screamer 0:9c59db1fbc9e 488
Alessandro Angelino 4:473d4af53300 489 #if defined(TARGET_CORTEX_A)
screamer 0:9c59db1fbc9e 490 if (new_heap >= (unsigned char*)&__HeapLimit) { /* __HeapLimit is end of heap section */
screamer 0:9c59db1fbc9e 491 #else
Alessandro Angelino 4:473d4af53300 492 if (new_heap >= (unsigned char*)__current_sp()) {
screamer 0:9c59db1fbc9e 493 #endif
screamer 0:9c59db1fbc9e 494 errno = ENOMEM;
screamer 0:9c59db1fbc9e 495 return (caddr_t)-1;
screamer 0:9c59db1fbc9e 496 }
screamer 0:9c59db1fbc9e 497
screamer 0:9c59db1fbc9e 498 heap = new_heap;
screamer 0:9c59db1fbc9e 499 return (caddr_t) prev_heap;
screamer 0:9c59db1fbc9e 500 }
screamer 0:9c59db1fbc9e 501 #endif
screamer 0:9c59db1fbc9e 502
screamer 0:9c59db1fbc9e 503
screamer 0:9c59db1fbc9e 504 #if defined TOOLCHAIN_GCC_ARM
screamer 0:9c59db1fbc9e 505 extern "C" void _exit(int return_code) {
screamer 0:9c59db1fbc9e 506 #else
screamer 0:9c59db1fbc9e 507 namespace std {
screamer 0:9c59db1fbc9e 508 extern "C" void exit(int return_code) {
screamer 0:9c59db1fbc9e 509 #endif
screamer 0:9c59db1fbc9e 510
screamer 0:9c59db1fbc9e 511 #if DEVICE_STDIO_MESSAGES
screamer 0:9c59db1fbc9e 512 fflush(stdout);
screamer 0:9c59db1fbc9e 513 fflush(stderr);
screamer 0:9c59db1fbc9e 514 #endif
screamer 0:9c59db1fbc9e 515
screamer 0:9c59db1fbc9e 516 #if DEVICE_SEMIHOST
screamer 0:9c59db1fbc9e 517 if (mbed_interface_connected()) {
screamer 0:9c59db1fbc9e 518 semihost_exit();
screamer 0:9c59db1fbc9e 519 }
screamer 0:9c59db1fbc9e 520 #endif
screamer 0:9c59db1fbc9e 521 if (return_code) {
screamer 0:9c59db1fbc9e 522 mbed_die();
screamer 0:9c59db1fbc9e 523 }
screamer 0:9c59db1fbc9e 524
screamer 0:9c59db1fbc9e 525 while (1);
screamer 0:9c59db1fbc9e 526 }
screamer 0:9c59db1fbc9e 527
screamer 0:9c59db1fbc9e 528 #if !defined(TOOLCHAIN_GCC_ARM)
screamer 0:9c59db1fbc9e 529 } //namespace std
screamer 0:9c59db1fbc9e 530 #endif
screamer 0:9c59db1fbc9e 531
screamer 0:9c59db1fbc9e 532
screamer 0:9c59db1fbc9e 533 namespace mbed {
screamer 0:9c59db1fbc9e 534
screamer 0:9c59db1fbc9e 535 void mbed_set_unbuffered_stream(FILE *_file) {
screamer 0:9c59db1fbc9e 536 #if defined (__ICCARM__)
screamer 0:9c59db1fbc9e 537 char buf[2];
screamer 0:9c59db1fbc9e 538 std::setvbuf(_file,buf,_IONBF,NULL);
screamer 0:9c59db1fbc9e 539 #else
screamer 0:9c59db1fbc9e 540 setbuf(_file, NULL);
screamer 0:9c59db1fbc9e 541 #endif
screamer 0:9c59db1fbc9e 542 }
screamer 0:9c59db1fbc9e 543
screamer 0:9c59db1fbc9e 544 int mbed_getc(FILE *_file){
screamer 0:9c59db1fbc9e 545 #if defined (__ICCARM__)
screamer 0:9c59db1fbc9e 546 /*This is only valid for unbuffered streams*/
screamer 0:9c59db1fbc9e 547 int res = std::fgetc(_file);
screamer 0:9c59db1fbc9e 548 if (res>=0){
screamer 0:9c59db1fbc9e 549 _file->_Mode = (unsigned short)(_file->_Mode & ~ 0x1000);/* Unset read mode */
screamer 0:9c59db1fbc9e 550 _file->_Rend = _file->_Wend;
screamer 0:9c59db1fbc9e 551 _file->_Next = _file->_Wend;
screamer 0:9c59db1fbc9e 552 }
screamer 0:9c59db1fbc9e 553 return res;
screamer 0:9c59db1fbc9e 554 #else
screamer 0:9c59db1fbc9e 555 return std::fgetc(_file);
screamer 0:9c59db1fbc9e 556 #endif
screamer 0:9c59db1fbc9e 557 }
screamer 0:9c59db1fbc9e 558
screamer 0:9c59db1fbc9e 559 char* mbed_gets(char*s, int size, FILE *_file){
screamer 0:9c59db1fbc9e 560 #if defined (__ICCARM__)
screamer 0:9c59db1fbc9e 561 /*This is only valid for unbuffered streams*/
screamer 0:9c59db1fbc9e 562 char *str = fgets(s,size,_file);
screamer 0:9c59db1fbc9e 563 if (str!=NULL){
screamer 0:9c59db1fbc9e 564 _file->_Mode = (unsigned short)(_file->_Mode & ~ 0x1000);/* Unset read mode */
screamer 0:9c59db1fbc9e 565 _file->_Rend = _file->_Wend;
screamer 0:9c59db1fbc9e 566 _file->_Next = _file->_Wend;
screamer 0:9c59db1fbc9e 567 }
screamer 0:9c59db1fbc9e 568 return str;
screamer 0:9c59db1fbc9e 569 #else
screamer 0:9c59db1fbc9e 570 return std::fgets(s,size,_file);
screamer 0:9c59db1fbc9e 571 #endif
screamer 0:9c59db1fbc9e 572 }
screamer 0:9c59db1fbc9e 573
screamer 0:9c59db1fbc9e 574 } // namespace mbed