Diff: platform/retarget.cpp

Revision:

160:d5399cc887bb

Parent:

159:612c381a210f

Child:

161:2cc1468da177

--- a/platform/retarget.cpp	Tue Feb 28 17:13:35 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,853 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2015 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "platform/platform.h"
-#include "drivers/FileHandle.h"
-#include "drivers/FileSystemLike.h"
-#include "drivers/FilePath.h"
-#include "hal/serial_api.h"
-#include "platform/toolchain.h"
-#include "platform/semihost_api.h"
-#include "platform/mbed_interface.h"
-#include "platform/SingletonPtr.h"
-#include "platform/PlatformMutex.h"
-#include "platform/mbed_error.h"
-#include "platform/mbed_stats.h"
-#include <stdlib.h>
-#include <string.h>
-#if DEVICE_STDIO_MESSAGES
-#include <stdio.h>
-#endif
-#include <errno.h>
-
-#if defined(__ARMCC_VERSION)
-#   include <rt_sys.h>
-#   define PREFIX(x)    _sys##x
-#   define OPEN_MAX     _SYS_OPEN
-#   ifdef __MICROLIB
-#       pragma import(__use_full_stdio)
-#   endif
-
-#elif defined(__ICCARM__)
-#   include <yfuns.h>
-#   define PREFIX(x)        _##x
-#   define OPEN_MAX         16
-
-#   define STDIN_FILENO     0
-#   define STDOUT_FILENO    1
-#   define STDERR_FILENO    2
-
-#else
-#   include <sys/stat.h>
-#   include <sys/unistd.h>
-#   include <sys/syslimits.h>
-#   define PREFIX(x)    x
-#endif
-
-#define FILE_HANDLE_RESERVED    0xFFFFFFFF
-
-using namespace mbed;
-
-#if defined(__MICROLIB) && (__ARMCC_VERSION>5030000)
-// Before version 5.03, we were using a patched version of microlib with proper names
-extern const char __stdin_name[]  = ":tt";
-extern const char __stdout_name[] = ":tt";
-extern const char __stderr_name[] = ":tt";
-
-#else
-extern const char __stdin_name[]  = "/stdin";
-extern const char __stdout_name[] = "/stdout";
-extern const char __stderr_name[] = "/stderr";
-#endif
-
-// Heap limits - only used if set
-unsigned char *mbed_heap_start = 0;
-uint32_t mbed_heap_size = 0;
-
-/* newlib has the filehandle field in the FILE struct as a short, so
- * we can't just return a Filehandle* from _open and instead have to
- * put it in a filehandles array and return the index into that array
- * (or rather index+3, as filehandles 0-2 are stdin/out/err).
- */
-static FileHandle *filehandles[OPEN_MAX];
-static SingletonPtr<PlatformMutex> filehandle_mutex;
-
-FileHandle::~FileHandle() {
-    filehandle_mutex->lock();
-    /* Remove all open filehandles for this */
-    for (unsigned int fh_i = 0; fh_i < sizeof(filehandles)/sizeof(*filehandles); fh_i++) {
-        if (filehandles[fh_i] == this) {
-            filehandles[fh_i] = NULL;
-        }
-    }
-    filehandle_mutex->unlock();
-}
-
-#if DEVICE_SERIAL
-extern int stdio_uart_inited;
-extern serial_t stdio_uart;
-#if MBED_CONF_PLATFORM_STDIO_CONVERT_NEWLINES
-static char stdio_in_prev;
-static char stdio_out_prev;
-#endif
-#endif
-
-static void init_serial() {
-#if DEVICE_SERIAL
-    if (stdio_uart_inited) return;
-    serial_init(&stdio_uart, STDIO_UART_TX, STDIO_UART_RX);
-#if MBED_CONF_PLATFORM_STDIO_BAUD_RATE
-    serial_baud(&stdio_uart, MBED_CONF_PLATFORM_STDIO_BAUD_RATE);
-#endif
-#endif
-}
-
-static inline int openmode_to_posix(int openmode) {
-    int posix = openmode;
-#ifdef __ARMCC_VERSION
-    if (openmode & OPEN_PLUS) {
-        posix = O_RDWR;
-    } else if(openmode & OPEN_W) {
-        posix = O_WRONLY;
-    } else if(openmode & OPEN_A) {
-        posix = O_WRONLY|O_APPEND;
-    } else {
-        posix = O_RDONLY;
-    }
-    /* a, w, a+, w+ all create if file does not already exist */
-    if (openmode & (OPEN_A|OPEN_W)) {
-        posix |= O_CREAT;
-    }
-    /* w and w+ truncate */
-    if (openmode & OPEN_W) {
-        posix |= O_TRUNC;
-    }
-#elif defined(__ICCARM__)
-    switch (openmode & _LLIO_RDWRMASK) {
-        case _LLIO_RDONLY: posix = O_RDONLY; break;
-        case _LLIO_WRONLY: posix = O_WRONLY; break;
-        case _LLIO_RDWR  : posix = O_RDWR  ; break;
-    }
-    if (openmode & _LLIO_CREAT ) posix |= O_CREAT;
-    if (openmode & _LLIO_APPEND) posix |= O_APPEND;
-    if (openmode & _LLIO_TRUNC ) posix |= O_TRUNC;
-#elif defined(TOOLCHAIN_GCC)
-    posix &= ~O_BINARY;
-#endif
-    return posix;
-}
-
-extern "C" WEAK void mbed_sdk_init(void);
-extern "C" WEAK void mbed_sdk_init(void) {
-}
-
-extern "C" FILEHANDLE PREFIX(_open)(const char* name, int openmode) {
-    #if defined(__MICROLIB) && (__ARMCC_VERSION>5030000)
-    // Before version 5.03, we were using a patched version of microlib with proper names
-    // This is the workaround that the microlib author suggested us
-    static int n = 0;
-    static int mbed_sdk_inited = 0;
-    if (!mbed_sdk_inited) {
-        mbed_sdk_inited = 1;
-        mbed_sdk_init();
-    }
-    if (!std::strcmp(name, ":tt")) return n++;
-    #else
-    /* Use the posix convention that stdin,out,err are filehandles 0,1,2.
-     */
-    if (std::strcmp(name, __stdin_name) == 0) {
-        init_serial();
-        return 0;
-    } else if (std::strcmp(name, __stdout_name) == 0) {
-        init_serial();
-        return 1;
-    } else if (std::strcmp(name, __stderr_name) == 0) {
-        init_serial();
-        return 2;
-    }
-    #endif
-
-    // find the first empty slot in filehandles
-    filehandle_mutex->lock();
-    unsigned int fh_i;
-    for (fh_i = 0; fh_i < sizeof(filehandles)/sizeof(*filehandles); fh_i++) {
-        if (filehandles[fh_i] == NULL) break;
-    }
-    if (fh_i >= sizeof(filehandles)/sizeof(*filehandles)) {
-        filehandle_mutex->unlock();
-        return -1;
-    }
-    filehandles[fh_i] = (FileHandle*)FILE_HANDLE_RESERVED;
-    filehandle_mutex->unlock();
-
-    FileHandle *res;
-
-    /* FILENAME: ":0x12345678" describes a FileLike* */
-    if (name[0] == ':') {
-        void *p;
-        sscanf(name, ":%p", &p);
-        res = (FileHandle*)p;
-
-    /* FILENAME: "/file_system/file_name" */
-    } else {
-        FilePath path(name);
-
-        if (!path.exists()) {
-            // Free file handle
-            filehandles[fh_i] = NULL;
-            return -1;
-        } else if (path.isFile()) {
-            res = path.file();
-        } else {
-            FileSystemLike *fs = path.fileSystem();
-            if (fs == NULL) {
-                // Free file handle
-                filehandles[fh_i] = NULL;
-                return -1;
-            }
-            int posix_mode = openmode_to_posix(openmode);
-            res = fs->open(path.fileName(), posix_mode); /* NULL if fails */
-        }
-    }
-
-    if (res == NULL) {
-        // Free file handle
-        filehandles[fh_i] = NULL;
-        return -1;
-    }
-    filehandles[fh_i] = res;
-
-    return fh_i + 3; // +3 as filehandles 0-2 are stdin/out/err
-}
-
-extern "C" int PREFIX(_close)(FILEHANDLE fh) {
-    if (fh < 3) return 0;
-
-    FileHandle* fhc = filehandles[fh-3];
-    filehandles[fh-3] = NULL;
-    if (fhc == NULL) return -1;
-
-    return fhc->close();
-}
-
-#if defined(__ICCARM__)
-extern "C" size_t    __write (int        fh, const unsigned char *buffer, size_t length) {
-#else
-extern "C" int PREFIX(_write)(FILEHANDLE fh, const unsigned char *buffer, unsigned int length, int mode) {
-#endif
-    int n; // n is the number of bytes written
-    if (fh < 3) {
-#if DEVICE_SERIAL
-        if (!stdio_uart_inited) init_serial();
-#if MBED_CONF_PLATFORM_STDIO_CONVERT_NEWLINES
-        for (unsigned int i = 0; i < length; i++) {
-            if (buffer[i] == '\n' && stdio_out_prev != '\r') {
-                 serial_putc(&stdio_uart, '\r');
-            }
-            serial_putc(&stdio_uart, buffer[i]);
-            stdio_out_prev = buffer[i];
-        }
-#else
-        for (unsigned int i = 0; i < length; i++) {
-            serial_putc(&stdio_uart, buffer[i]);
-        }
-#endif
-#endif
-        n = length;
-    } else {
-        FileHandle* fhc = filehandles[fh-3];
-        if (fhc == NULL) return -1;
-
-        n = fhc->write(buffer, length);
-    }
-#ifdef __ARMCC_VERSION
-    return length-n;
-#else
-    return n;
-#endif
-}
-
-#if defined(__ICCARM__)
-extern "C" size_t    __read (int        fh, unsigned char *buffer, size_t       length) {
-#else
-extern "C" int PREFIX(_read)(FILEHANDLE fh, unsigned char *buffer, unsigned int length, int mode) {
-#endif
-    int n; // n is the number of bytes read
-    if (fh < 3) {
-        // only read a character at a time from stdin
-#if DEVICE_SERIAL
-        if (!stdio_uart_inited) init_serial();
-#if MBED_CONF_PLATFORM_STDIO_CONVERT_NEWLINES
-        while (true) {
-            char c = serial_getc(&stdio_uart);
-            if ((c == '\r' && stdio_in_prev != '\n') ||
-                (c == '\n' && stdio_in_prev != '\r')) {
-                stdio_in_prev = c;
-                *buffer = '\n';
-                break;
-            } else if ((c == '\r' && stdio_in_prev == '\n') ||
-                       (c == '\n' && stdio_in_prev == '\r')) {
-                stdio_in_prev = c;
-                // onto next character
-                continue;
-            } else {
-                stdio_in_prev = c;
-                *buffer = c;
-                break;
-            }
-        }
-#else
-        *buffer = serial_getc(&stdio_uart);
-#endif
-#endif
-        n = 1;
-    } else {
-        FileHandle* fhc = filehandles[fh-3];
-        if (fhc == NULL) return -1;
-
-        n = fhc->read(buffer, length);
-    }
-#ifdef __ARMCC_VERSION
-    return length-n;
-#else
-    return n;
-#endif
-}
-
-#ifdef __ARMCC_VERSION
-extern "C" int PREFIX(_istty)(FILEHANDLE fh)
-#else
-extern "C" int _isatty(FILEHANDLE fh)
-#endif
-{
-    /* stdin, stdout and stderr should be tty */
-    if (fh < 3) return 1;
-
-    FileHandle* fhc = filehandles[fh-3];
-    if (fhc == NULL) return -1;
-
-    return fhc->isatty();
-}
-
-extern "C"
-#if defined(__ARMCC_VERSION)
-int _sys_seek(FILEHANDLE fh, long position)
-#elif defined(__ICCARM__)
-long __lseek(int fh, long offset, int whence)
-#else
-int _lseek(FILEHANDLE fh, int offset, int whence)
-#endif
-{
-    if (fh < 3) return 0;
-
-    FileHandle* fhc = filehandles[fh-3];
-    if (fhc == NULL) return -1;
-
-#if defined(__ARMCC_VERSION)
-    return fhc->lseek(position, SEEK_SET);
-#else
-    return fhc->lseek(offset, whence);
-#endif
-}
-
-#ifdef __ARMCC_VERSION
-extern "C" int PREFIX(_ensure)(FILEHANDLE fh) {
-    if (fh < 3) return 0;
-
-    FileHandle* fhc = filehandles[fh-3];
-    if (fhc == NULL) return -1;
-
-    return fhc->fsync();
-}
-
-extern "C" long PREFIX(_flen)(FILEHANDLE fh) {
-    if (fh < 3) return 0;
-
-    FileHandle* fhc = filehandles[fh-3];
-    if (fhc == NULL) return -1;
-
-    return fhc->flen();
-}
-#endif
-
-
-#if !defined(__ARMCC_VERSION) && !defined(__ICCARM__)
-extern "C" int _fstat(int fd, struct stat *st) {
-    if ((STDOUT_FILENO == fd) || (STDERR_FILENO == fd) || (STDIN_FILENO == fd)) {
-        st->st_mode = S_IFCHR;
-        return  0;
-    }
-
-    errno = EBADF;
-    return -1;
-}
-#endif
-
-namespace std {
-extern "C" int remove(const char *path) {
-    FilePath fp(path);
-    FileSystemLike *fs = fp.fileSystem();
-    if (fs == NULL) return -1;
-
-    return fs->remove(fp.fileName());
-}
-
-extern "C" int rename(const char *oldname, const char *newname) {
-    FilePath fpOld(oldname);
-    FilePath fpNew(newname);
-    FileSystemLike *fsOld = fpOld.fileSystem();
-    FileSystemLike *fsNew = fpNew.fileSystem();
-
-    /* rename only if both files are on the same FS */
-    if (fsOld != fsNew || fsOld == NULL) return -1;
-
-    return fsOld->rename(fpOld.fileName(), fpNew.fileName());
-}
-
-extern "C" char *tmpnam(char *s) {
-    return NULL;
-}
-
-extern "C" FILE *tmpfile() {
-    return NULL;
-}
-} // namespace std
-
-#ifdef __ARMCC_VERSION
-extern "C" char *_sys_command_string(char *cmd, int len) {
-    return NULL;
-}
-#endif
-
-extern "C" DIR *opendir(const char *path) {
-    /* root dir is FileSystemLike */
-    if (path[0] == '/' && path[1] == 0) {
-        return FileSystemLike::opendir();
-    }
-
-    FilePath fp(path);
-    FileSystemLike* fs = fp.fileSystem();
-    if (fs == NULL) return NULL;
-
-    return fs->opendir(fp.fileName());
-}
-
-extern "C" struct dirent *readdir(DIR *dir) {
-    return dir->readdir();
-}
-
-extern "C" int closedir(DIR *dir) {
-    return dir->closedir();
-}
-
-extern "C" void rewinddir(DIR *dir) {
-    dir->rewinddir();
-}
-
-extern "C" off_t telldir(DIR *dir) {
-    return dir->telldir();
-}
-
-extern "C" void seekdir(DIR *dir, off_t off) {
-    dir->seekdir(off);
-}
-
-extern "C" int mkdir(const char *path, mode_t mode) {
-    FilePath fp(path);
-    FileSystemLike *fs = fp.fileSystem();
-    if (fs == NULL) return -1;
-
-    return fs->mkdir(fp.fileName(), mode);
-}
-
-#if defined(TOOLCHAIN_GCC)
-/* prevents the exception handling name demangling code getting pulled in */
-#include "mbed_error.h"
-namespace __gnu_cxx {
-    void __verbose_terminate_handler() {
-        error("Exception");
-    }
-}
-extern "C" WEAK void __cxa_pure_virtual(void);
-extern "C" WEAK void __cxa_pure_virtual(void) {
-    exit(1);
-}
-
-#endif
-
-#if defined(TOOLCHAIN_GCC)
-
-#ifdef  FEATURE_UVISOR
-#include "uvisor-lib/uvisor-lib.h"
-#endif/* FEATURE_UVISOR */
-
-
-extern "C" WEAK void software_init_hook_rtos(void)
-{
-    // Do nothing by default.
-}
-
-extern "C" void software_init_hook(void)
-{
-#ifdef   FEATURE_UVISOR
-    int return_code;
-
-    return_code = uvisor_lib_init();
-    if (return_code) {
-        mbed_die();
-    }
-#endif/* FEATURE_UVISOR */
-    mbed_sdk_init();
-    software_init_hook_rtos();
-}
-#endif
-
-// ****************************************************************************
-// mbed_main is a function that is called before main()
-// mbed_sdk_init() is also a function that is called before main(), but unlike
-// mbed_main(), it is not meant for user code, but for the SDK itself to perform
-// initializations before main() is called.
-
-extern "C" WEAK void mbed_main(void);
-extern "C" WEAK void mbed_main(void) {
-}
-
-#if defined(TOOLCHAIN_ARM)
-extern "C" int $Super$$main(void);
-
-extern "C" int $Sub$$main(void) {
-    mbed_main();
-    return $Super$$main();
-}
-
-extern "C" void _platform_post_stackheap_init (void) {
-    mbed_sdk_init();
-}
-
-#elif defined(TOOLCHAIN_GCC)
-extern "C" int __real_main(void);
-
-extern "C" int __wrap_main(void) {
-    mbed_main();
-    return __real_main();
-}
-#elif defined(TOOLCHAIN_IAR)
-// IAR doesn't have the $Super/$Sub mechanism of armcc, nor something equivalent
-// to ld's --wrap. It does have a --redirect, but that doesn't help, since redirecting
-// 'main' to another symbol looses the original 'main' symbol. However, its startup
-// code will call a function to setup argc and argv (__iar_argc_argv) if it is defined.
-// Since mbed doesn't use argc/argv, we use this function to call our mbed_main.
-extern "C" void __iar_argc_argv() {
-    mbed_main();
-}
-#endif
-
-// Provide implementation of _sbrk (low-level dynamic memory allocation
-// routine) for GCC_ARM which compares new heap pointer with MSP instead of
-// SP.  This make it compatible with RTX RTOS thread stacks.
-#if defined(TOOLCHAIN_GCC_ARM) || defined(TOOLCHAIN_GCC_CR)
-// Linker defined symbol used by _sbrk to indicate where heap should start.
-extern "C" int __end__;
-
-#if defined(TARGET_CORTEX_A)
-extern "C" uint32_t  __HeapLimit;
-#endif
-
-// Turn off the errno macro and use actual global variable instead.
-#undef errno
-extern "C" int errno;
-
-// For ARM7 only
-register unsigned char * stack_ptr __asm ("sp");
-
-// Dynamic memory allocation related syscall.
-#if defined(TARGET_NUMAKER_PFM_NUC472) || defined(TARGET_NUMAKER_PFM_M453)
-// Overwrite _sbrk() to support two region model (heap and stack are two distinct regions).
-// __wrap__sbrk() is implemented in:
-// TARGET_NUMAKER_PFM_NUC472    hal/targets/cmsis/TARGET_NUVOTON/TARGET_NUC472/TARGET_NUMAKER_PFM_NUC472/TOOLCHAIN_GCC_ARM/retarget.c
-// TARGET_NUMAKER_PFM_M453      hal/targets/cmsis/TARGET_NUVOTON/TARGET_M451/TARGET_NUMAKER_PFM_M453/TOOLCHAIN_GCC_ARM/retarget.c
-extern "C" void *__wrap__sbrk(int incr);
-extern "C" caddr_t _sbrk(int incr) {
-    return (caddr_t) __wrap__sbrk(incr);
-}
-#else
-extern "C" caddr_t _sbrk(int incr) {
-    static unsigned char* heap = (unsigned char*)&__end__;
-    unsigned char*        prev_heap = heap;
-    unsigned char*        new_heap = heap + incr;
-
-#if defined(TARGET_ARM7)
-    if (new_heap >= stack_ptr) {
-#elif defined(TARGET_CORTEX_A)
-    if (new_heap >= (unsigned char*)&__HeapLimit) {     /* __HeapLimit is end of heap section */
-#else
-    if (new_heap >= (unsigned char*)__get_MSP()) {
-#endif
-        errno = ENOMEM;
-        return (caddr_t)-1;
-    }
-
-    // Additional heap checking if set
-    if (mbed_heap_size && (new_heap >= mbed_heap_start + mbed_heap_size)) {
-        errno = ENOMEM;
-        return (caddr_t)-1;
-    }
-
-    heap = new_heap;
-    return (caddr_t) prev_heap;
-}
-#endif
-#endif
-
-#if defined(TOOLCHAIN_GCC_ARM) || defined(TOOLCHAIN_GCC_CR)
-extern "C" void _exit(int return_code) {
-#else
-namespace std {
-extern "C" void exit(int return_code) {
-#endif
-
-#if DEVICE_STDIO_MESSAGES
-#if MBED_CONF_PLATFORM_STDIO_FLUSH_AT_EXIT
-    fflush(stdout);
-    fflush(stderr);
-#endif
-#endif
-
-#if DEVICE_SEMIHOST
-    if (mbed_interface_connected()) {
-        semihost_exit();
-    }
-#endif
-    if (return_code) {
-        mbed_die();
-    }
-
-    while (1);
-}
-
-#if !defined(TOOLCHAIN_GCC_ARM) && !defined(TOOLCHAIN_GCC_CR)
-} //namespace std
-#endif
-
-#if defined(TOOLCHAIN_ARM) || defined(TOOLCHAIN_GCC)
-
-// This series of function disable the registration of global destructors
-// in a dynamic table which will be called when the application exit.
-// In mbed, program never exit properly, it dies.
-// More informations about this topic for ARMCC here:
-// http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/6449.html
-extern "C" {
-int __aeabi_atexit(void *object, void (*dtor)(void* /*this*/), void *handle) {
-    return 1;
-}
-
-int __cxa_atexit(void (*dtor)(void* /*this*/), void *object, void *handle) {
-    return 1;
-}
-
-void __cxa_finalize(void *handle) {
-}
-
-} // end of extern "C"
-
-#endif
-
-
-#if defined(TOOLCHAIN_GCC)
-
-/*
- * Depending on how newlib is  configured, it is often not enough to define
- * __aeabi_atexit, __cxa_atexit and __cxa_finalize in order to override the
- * behavior regarding the registration of handlers with atexit.
- *
- * To overcome this limitation, exit and atexit are overriden here.
- */
-extern "C"{
-
-/**
- * @brief Retarget of exit for GCC.
- * @details Unlike the standard version, this function doesn't call any function
- * registered with atexit before calling _exit.
- */
-void __wrap_exit(int return_code) {
-    _exit(return_code);
-}
-
-/**
- * @brief Retarget atexit from GCC.
- * @details This function will always fail and never register any handler to be
- * called at exit.
- */
-int __wrap_atexit(void (*func)()) {
-    return 1;
-}
-
-}
-
-#endif
-
-
-
-namespace mbed {
-
-void mbed_set_unbuffered_stream(FILE *_file) {
-#if defined (__ICCARM__)
-    char buf[2];
-    std::setvbuf(_file,buf,_IONBF,NULL);    
-#else
-    setbuf(_file, NULL);
-#endif
-}
-
-int mbed_getc(FILE *_file){
-#if defined (__ICCARM__)
-    /*This is only valid for unbuffered streams*/
-    int res = std::fgetc(_file);
-    if (res>=0){
-        _file->_Mode = (unsigned short)(_file->_Mode & ~ 0x1000);/* Unset read mode */
-        _file->_Rend = _file->_Wend;
-        _file->_Next = _file->_Wend;
-    }    
-    return res;
-#else    
-    return std::fgetc(_file);
-#endif   
-}
-
-char* mbed_gets(char*s, int size, FILE *_file){
-#if defined (__ICCARM__)
-    /*This is only valid for unbuffered streams*/
-    char *str = fgets(s,size,_file);
-    if (str!=NULL){
-        _file->_Mode = (unsigned short)(_file->_Mode & ~ 0x1000);/* Unset read mode */
-        _file->_Rend = _file->_Wend;
-        _file->_Next = _file->_Wend;
-    }
-    return str;
-#else    
-    return std::fgets(s,size,_file);
-#endif
-}
-
-} // namespace mbed
-
-#if defined (__ICCARM__)
-// Stub out locks when an rtos is not present
-extern "C" WEAK void __iar_system_Mtxinit(__iar_Rmtx *mutex) {}
-extern "C" WEAK void __iar_system_Mtxdst(__iar_Rmtx *mutex) {}
-extern "C" WEAK void __iar_system_Mtxlock(__iar_Rmtx *mutex) {}
-extern "C" WEAK void __iar_system_Mtxunlock(__iar_Rmtx *mutex) {}
-extern "C" WEAK void __iar_file_Mtxinit(__iar_Rmtx *mutex) {}
-extern "C" WEAK void __iar_file_Mtxdst(__iar_Rmtx *mutex) {}
-extern "C" WEAK void __iar_file_Mtxlock(__iar_Rmtx *mutex) {}
-extern "C" WEAK void __iar_file_Mtxunlock(__iar_Rmtx *mutex) {}
-#elif defined(__CC_ARM)
-// Do nothing
-#elif defined (__GNUC__)
-struct _reent;
-// Stub out locks when an rtos is not present
-extern "C" WEAK void __rtos_malloc_lock( struct _reent *_r ) {}
-extern "C" WEAK void __rtos_malloc_unlock( struct _reent *_r ) {}
-extern "C" WEAK void __rtos_env_lock( struct _reent *_r ) {}
-extern "C" WEAK void __rtos_env_unlock( struct _reent *_r ) {}
-
-extern "C" void __malloc_lock( struct _reent *_r )
-{
-    __rtos_malloc_lock(_r);
-}
-
-extern "C" void __malloc_unlock( struct _reent *_r )
-{
-    __rtos_malloc_unlock(_r);
-}
-
-extern "C" void __env_lock( struct _reent *_r )
-{
-    __rtos_env_lock(_r);
-}
-
-extern "C" void __env_unlock( struct _reent *_r )
-{
-    __rtos_env_unlock(_r);
-}
-
-#define CXA_GUARD_INIT_DONE             (1 << 0)
-#define CXA_GUARD_INIT_IN_PROGRESS      (1 << 1)
-#define CXA_GUARD_MASK                  (CXA_GUARD_INIT_DONE | CXA_GUARD_INIT_IN_PROGRESS)
-
-extern "C" int __cxa_guard_acquire(int *guard_object_p)
-{
-    uint8_t *guard_object = (uint8_t *)guard_object_p;
-    if (CXA_GUARD_INIT_DONE == (*guard_object & CXA_GUARD_MASK)) {
-        return 0;
-    }
-    singleton_lock();
-    if (CXA_GUARD_INIT_DONE == (*guard_object & CXA_GUARD_MASK)) {
-        singleton_unlock();
-        return 0;
-    }
-    MBED_ASSERT(0 == (*guard_object & CXA_GUARD_MASK));
-    *guard_object = *guard_object | CXA_GUARD_INIT_IN_PROGRESS;
-    return 1;
-}
-
-extern "C" void __cxa_guard_release(int *guard_object_p)
-{
-    uint8_t *guard_object = (uint8_t *)guard_object_p;
-    MBED_ASSERT(CXA_GUARD_INIT_IN_PROGRESS == (*guard_object & CXA_GUARD_MASK));
-    *guard_object = (*guard_object & ~CXA_GUARD_MASK) | CXA_GUARD_INIT_DONE;
-    singleton_unlock();
-}
-
-extern "C" void __cxa_guard_abort(int *guard_object_p)
-{
-    uint8_t *guard_object = (uint8_t *)guard_object_p;
-    MBED_ASSERT(CXA_GUARD_INIT_IN_PROGRESS == (*guard_object & CXA_GUARD_MASK));
-    *guard_object = *guard_object & ~CXA_GUARD_INIT_IN_PROGRESS;
-    singleton_unlock();
-}
-
-#endif
-
-void *operator new(std::size_t count)
-{
-    void *buffer = malloc(count);
-    if (NULL == buffer) {
-        error("Operator new out of memory\r\n");
-    }
-    return buffer;
-}
-
-void *operator new[](std::size_t count)
-{
-    void *buffer = malloc(count);
-    if (NULL == buffer) {
-        error("Operator new[] out of memory\r\n");
-    }
-    return buffer;
-}
-
-void operator delete(void *ptr)
-{
-    if (ptr != NULL) {
-        free(ptr);
-    }
-}
-void operator delete[](void *ptr)
-{
-    if (ptr != NULL) {
-        free(ptr);
-    }
-}