Subversion Repositories openrisc

//===========================================================================

//

//      uit_func.cxx

//

//      uITRON compatibility functions

//

//===========================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

// -------------------------------------------

// This file is part of eCos, the Embedded Configurable Operating System.

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under

// the terms of the GNU General Public License as published by the Free

// Software Foundation; either version 2 or (at your option) any later version.

//

// eCos is distributed in the hope that it will be useful, but WITHOUT ANY

// WARRANTY; without even the implied warranty of MERCHANTABILITY or

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for more details.

//

// You should have received a copy of the GNU General Public License along

// with eCos; if not, write to the Free Software Foundation, Inc.,

// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

//

// As a special exception, if other files instantiate templates or use macros

// or inline functions from this file, or you compile this file and link it

// with other works to produce a work based on this file, this file does not

// by itself cause the resulting work to be covered by the GNU General Public

// License. However the source code for this file must still be made available

// in accordance with section (3) of the GNU General Public License.

//

// This exception does not invalidate any other reasons why a work based on

// this file might be covered by the GNU General Public License.

//

// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.

// at http://sources.redhat.com/ecos/ecos-license/

// -------------------------------------------

//####ECOSGPLCOPYRIGHTEND####

//===========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):   hmt

// Contributors:        hmt

// Date:        1998-03-13

// Purpose:     uITRON compatibility functions

// Description: 

//

//####DESCRIPTIONEND####

//

//===========================================================================

#include <pkgconf/uitron.h>             // uITRON setup CYGNUM_UITRON_SEMAS

                                        // CYGPKG_UITRON et al

#ifdef CYGPKG_UITRON

// invoke the inline function definition to create static C linkage

// functions here:

#define CYGPRI_UITRON_FUNCS_HERE_AND_NOW

#include <cyg/compat/uitron/uit_func.h>

cyg_uint32 cyg_uitron_dis_dsp_old_priority = 0;

// ------------------------------------------------------------------------

//                  STARTUP

// this routine is outside the uITRON specification; call it from

// cyg_start(), cyg_package_start(), cyg_prestart() or cyg_user_start()

// to start the uITRON tasks and scheduler.

#if CYGNUM_UITRON_START_TASKS < 0

#error CYGNUM_UITRON_START_TASKS should be >= 0

#endif

#if CYGNUM_UITRON_START_TASKS == 0

#define START_TASKS CYGNUM_UITRON_TASKS

#else

#define START_TASKS CYGNUM_UITRON_START_TASKS

#endif

#ifdef CYGPKG_UITRON_TASKS_CREATE_DELETE

#if START_TASKS > CYGNUM_UITRON_TASKS_INITIALLY

#undef START_TASKS

#define START_TASKS CYGNUM_UITRON_TASKS_INITIALLY

#endif

#endif

#if START_TASKS > CYGNUM_UITRON_TASKS

#undef START_TASKS

#define START_TASKS CYGNUM_UITRON_TASKS

#endif

#if START_TASKS <= 0

#error Number of uITRON tasks to start initially must be >= 0

#endif

#define SET_UP_PTRS( _which_ ) CYG_MACRO_START                            \

    for ( i = 0;                                                          \

          (i < CYGNUM_UITRON_ ## _which_ ## _INITIALLY) &&                \

          (i < CYGNUM_UITRON_ ## _which_              )    ;              \

          i++ ) {                                                         \

        CYG_UITRON_PTRS( _which_ )[ i ] = CYG_UITRON_OBJS( _which_ ) + i; \

    }                                                                     \

    if ( (CYGNUM_UITRON_ ## _which_ ## _INITIALLY)                        \

          < (CYGNUM_UITRON_ ## _which_) )                                 \

        for ( /* i as is */; i < CYGNUM_UITRON_ ## _which_ ; i++ ) {      \

            CYG_UITRON_PTRS( _which_ )[ i ] = NULL;                       \

        }                                                                 \

CYG_MACRO_END

#ifdef CYGVAR_KERNEL_COUNTERS_CLOCK

#ifdef CYGSEM_UITRON_TIME_IS_MILLISECONDS

Cyg_Clock::converter uit_clock_to_system;

Cyg_Clock::converter uit_clock_from_system;

#endif

#endif

void cyg_uitron_start( void )

{

    cyg_int32 i;

#ifdef CYGVAR_KERNEL_COUNTERS_CLOCK

#ifdef CYGSEM_UITRON_TIME_IS_MILLISECONDS

    // initialize the clock converters

    Cyg_Clock::real_time_clock->

        get_other_to_clock_converter( 1000000, &uit_clock_to_system );

    Cyg_Clock::real_time_clock->

        get_clock_to_other_converter( 1000000, &uit_clock_from_system );

#endif

#endif

    for ( i = 0; i < START_TASKS; i++ ) {

#ifdef CYGIMP_THREAD_PRIORITY

        // save the initial priority in our private array

        cyg_uitron_task_initial_priorities[ i ] =

            cyg_uitron_TASKS[ i ].get_priority();

#endif

        // and awaken the task:

        cyg_uitron_TASKS[ i ].resume();

    }

    for ( /* i as is */; i < CYGNUM_UITRON_TASKS; i++ ) {

#ifdef CYGIMP_THREAD_PRIORITY

        // save the initial priority in our private array

        cyg_uitron_task_initial_priorities[ i ] =

            cyg_uitron_TASKS[ i ].get_priority();

#endif

        // but ensure the task state is dormant.

        cyg_uitron_TASKS[ i ].kill();

    }

#ifdef CYGPKG_UITRON_TASKS_CREATE_DELETE

    SET_UP_PTRS( TASKS );

#endif

#ifdef CYGPKG_UITRON_SEMAS_CREATE_DELETE

    SET_UP_PTRS( SEMAS );

#endif

#ifdef CYGPKG_UITRON_MBOXES_CREATE_DELETE

    SET_UP_PTRS( MBOXES );

#endif

#ifdef CYGPKG_UITRON_FLAGS_CREATE_DELETE

    SET_UP_PTRS( FLAGS );

#endif

#ifdef CYGPKG_UITRON_MEMPOOLFIXED_CREATE_DELETE

    SET_UP_PTRS( MEMPOOLFIXED );

#endif

#ifdef CYGPKG_UITRON_MEMPOOLVAR_CREATE_DELETE

    SET_UP_PTRS( MEMPOOLVAR );

#endif

}

// These allow programs to link when cyg_uitron_start() is called

// (often because of CYGSEM_START_UITRON_COMPATIBILITY from infra,

//  though we define these regardless just in case)

// even when there is no interest in uITRON and so the tasks are

// not externally defined; the reference to cyg_uitron_start()

// ensures the tasks array et al are still included...

extern "C" {

    void task1( unsigned int arg ) CYGBLD_ATTRIB_WEAK;

    void task2( unsigned int arg ) CYGBLD_ATTRIB_WEAK;

    void task3( unsigned int arg ) CYGBLD_ATTRIB_WEAK;

    void task4( unsigned int arg ) CYGBLD_ATTRIB_WEAK;

}

void task1( unsigned int arg ) {}

void task2( unsigned int arg ) {}

void task3( unsigned int arg ) {}

void task4( unsigned int arg ) {}

#endif // CYGPKG_UITRON

// EOF uit_func.cxx