Subversion Repositories Kolibri OS

/*

 * crt1.c

 * This file has no copyright assigned and is placed in the Public Domain.

 * This file is a part of the mingw-runtime package.

 * No warranty is given; refer to the file DISCLAIMER within the package.

 *

 * Source code for the startup proceedures used by all programs. This code

 * is compiled to make crt1.o, which should be located in the library path.

 *

 */

/* Hide the declaration of _fmode with dllimport attribute in stdlib.h to

   avoid problems with older GCC. */

#include 

#include 

#include 

#include 

#include 

#include 

#include "cpu_features.h"

/* NOTE: The code for initializing the _argv, _argc, and environ variables

 *       has been moved to a separate .c file which is included in both

 *       crt1.c and dllcrt1.c. This means changes in the code don't have to

 *       be manually synchronized, but it does lead to this not-generally-

 *       a-good-idea use of include. */

extern char __cmdline;

extern char __pgmname;

extern int main (int, char **, char **);

int   _errno;

int   _fmode;

char  __appcwd[1024];

int   __appcwdlen;

int    _argc;

char **_argv;

static char *arg[2];

void   _exit(int __status) __attribute__((noreturn));

char * __libc_getenv(const char *name)

{

    return NULL;

}

void __main (){};

void init_reent();

void  __attribute__((noreturn))

__thread_startup (int (*entry)(void*), void *param,

                  void *stacklow, void *stackhigh)

{

    int retval;

    __asm__ __volatile__(               // save stack limits

    "movl %0, %%fs:4    \n\t"           // use TLS

    "movl %1, %%fs:8    \n\t"

    ::"r"(stacklow), "r"(stackhigh));

    init_reent();                       // initialize thread reentry structure

    retval = entry(param);              // call user thread function

    _exit(retval);

};

struct app_hdr

{

    char  banner[8];

    int   version;

    int   start;

    int   iend;

    int   memsize;

    int   stacktop;

    char  *cmdline;

    char  *path;

};

void  __attribute__((noreturn))

__crt_startup (void)

{

    int nRet;

    struct   app_hdr *header;

    init_reent();

  /*

   * Initialize floating point unit.

   */

    __cpu_features_init ();   /* Do we have SSE, etc.*/

//  _fpreset ();              /* Supplied by the runtime library. */

    __initPOSIXHandles();

    __appcwdlen = strrchr(&__pgmname, '/') - &__pgmname + 1;

    __appcwdlen = __appcwdlen > 1023 ? 1023 : __appcwdlen;

    memcpy(__appcwd, &__pgmname, __appcwdlen);

    __appcwd[__appcwdlen] = 0;

    set_cwd(__appcwd);

    arg[0] = &__pgmname;

    if( __cmdline != 0)

    {

        _argc = 2;

        arg[1] = &__cmdline;

    } else _argc = 1;

    _argv = arg;

  /*

   * Sets the default file mode.

   * If _CRT_fmode is set, also set mode for stdin, stdout

   * and stderr, as well

   * NOTE: DLLs don't do this because that would be rude!

   */

//  _mingw32_init_fmode ();

    nRet = main (_argc, _argv, NULL);

  /*

   * Perform exit processing for the C library. This means

   * flushing output and calling 'atexit' registered functions.

   */

    exit (nRet);

}