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//=======================================================================
//
// mainthread.cxx
//
// Support for startup of ISO C environment
//
//========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): jlarmour
// Contributors:
// Date: 2000-04-30
// Purpose: Provides a thread object to call into a user-supplied
// main()
// Description: Here we define the thread object that calls
// cyg_libc_invoke_main() which in turn will invoke
// the user-supplied main() entry point function (or
// alternatively the dummy empty one supplied by eCos)
// Usage: Both the stack (cyg_libc_main_stack) and the thread
// (cyg_libc_main_thread) can be overriden if you provide
// your own symbols with those names. In the case of the
// stack obviously you need to ensure
// CYGNUM_LIBC_MAIN_STACK_SIZE corresponds to your own
// stack.
// The thread object is also available externally if you
// want to control it (suspend/resume/etc.) either by
// extern Cyg_Thread cyg_libc_main_thread; from C++, using
// the kernel C++ API, or
// extern cyg_handle_t cyg_libc_main_thread; from C using
// the kernel C API.
//
//####DESCRIPTIONEND####
//
//========================================================================
// CONFIGURATION
#include <pkgconf/libc_startup.h> // C library configuration
#ifdef CYGSEM_LIBC_STARTUP_MAIN_THREAD
// INCLUDES
#include <cyg/infra/cyg_type.h> // Common type definitions and support
#include <pkgconf/kernel.h> // eCos kernel configuration
#include <cyg/kernel/thread.hxx> // eCos thread support
#include <cyg/kernel/thread.inl>
#include <cyg/hal/hal_arch.h> // for CYGNUM_HAL_STACK_SIZE_TYPICAL
// EXTERNS
#ifdef CYGSEM_LIBC_INVOKE_DEFAULT_STATIC_CONSTRUCTORS
extern cyg_bool cyg_hal_stop_constructors;
#endif
// FUNCTION PROTOTYPES
externC void
cyg_libc_invoke_main( CYG_ADDRWORD );
// STATICS
#ifdef CYGSEM_LIBC_MAIN_STACK_FROM_SYSTEM
// override stack size on some platforms
#ifdef CYGNUM_HAL_STACK_SIZE_TYPICAL
# if CYGNUM_LIBC_MAIN_DEFAULT_STACK_SIZE < CYGNUM_HAL_STACK_SIZE_TYPICAL
# undef CYGNUM_LIBC_MAIN_DEFAULT_STACK_SIZE
# define CYGNUM_LIBC_MAIN_DEFAULT_STACK_SIZE CYGNUM_HAL_STACK_SIZE_TYPICAL
# endif
#endif
static cyg_uint8 cyg_libc_main_stack[ CYGNUM_LIBC_MAIN_DEFAULT_STACK_SIZE ]
CYGBLD_ATTRIB_ALIGN(CYGARC_ALIGNMENT);
#else // !ifdef CYGSEM_LIBC_MAIN_STACK_FROM_SYSTEM
extern char *cyg_libc_main_stack;
extern int cyg_libc_main_stack_size;
#endif // !ifdef CYGSEM_LIBC_MAIN_STACK_FROM_SYSTEM
// GLOBALS
// let the main thread be global so people can play with it (e.g. suspend
// or resume etc.) if that's what they want to do
Cyg_Thread cyg_libc_main_thread CYGBLD_ATTRIB_INIT_PRI(CYG_INIT_LIBC) =
Cyg_Thread(CYGNUM_LIBC_MAIN_THREAD_PRIORITY,
&cyg_libc_invoke_main, (CYG_ADDRWORD) 0,
"main",
(CYG_ADDRESS) &cyg_libc_main_stack[0],
#ifdef CYGSEM_LIBC_MAIN_STACK_FROM_SYSTEM
CYGNUM_LIBC_MAIN_DEFAULT_STACK_SIZE
#else
cyg_libc_main_stack_size
#endif
);
#endif // ifdef CYGSEM_LIBC_STARTUP_MAIN_THREAD
// EOF mainthread.cxx
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