forked from Imagelibrary/rtems
a8b2523f58
* hared/bootcard.c: Now process C++ global constructors (_init) as part of the first task execution not in BSP space. This depends on the toolset defining USE_INIT_FINI so you have to have the right toolset version.
138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
/*
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* A simple main which can be used on any embedded target.
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*
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* This style of initialization insures that the C++ global
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* constructors are executed after RTEMS is initialized.
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*
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* Thanks to Chris Johns <cjohns@plessey.com.au> for this idea.
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.OARcorp.com/rtems/license.html.
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*
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* $Id$
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*/
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#include <bsp.h>
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#ifdef USE_INIT_FINI
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#include <stdlib.h> /* for atexit() */
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#endif
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extern void bsp_start( void );
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extern void bsp_cleanup( void );
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extern rtems_configuration_table Configuration;
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extern rtems_configuration_table BSP_Configuration;
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extern rtems_cpu_table Cpu_table;
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rtems_api_configuration_table BSP_RTEMS_Configuration;
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#ifdef RTEMS_POSIX_API
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posix_api_configuration_table BSP_POSIX_Configuration;
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#endif
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/* Initialize C++ global Ctor/Dtor and initializes exception handling. */
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#if defined(USE_INIT_FINI)
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extern void _fini( void );
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#endif
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rtems_interrupt_level bsp_isr_level;
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/*
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* Since there is a forward reference
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*/
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int main(int argc, char **argv, char **envp);
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int boot_card(int argc, char **argv, char **envp)
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{
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int status;
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static char *argv_pointer = NULL;
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static char *envp_pointer = NULL;
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char **argv_p = &argv_pointer;
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char **envp_p = &envp_pointer;
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/*
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* Set things up so main is called with real pointers for argv and envp.
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* If the BSP has passed us something useful, then pass it on.
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*/
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if ( argv )
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argv_p = argv;
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if ( envp )
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envp_p = envp;
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/*
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* Set default values for the CPU Table fields all ports must have.
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* These values can be overridden in bsp_start() but they are
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* right most of the time.
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*/
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Cpu_table.pretasking_hook = NULL;
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Cpu_table.predriver_hook = NULL;
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Cpu_table.postdriver_hook = NULL;
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Cpu_table.idle_task = NULL;
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Cpu_table.do_zero_of_workspace = TRUE;
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Cpu_table.interrupt_stack_size = RTEMS_MINIMUM_STACK_SIZE;
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Cpu_table.extra_mpci_receive_server_stack = 0;
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Cpu_table.stack_allocate_hook = NULL;
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Cpu_table.stack_free_hook = NULL;
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/*
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* Copy the configuration table so we and the BSP wants to change it.
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*/
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BSP_Configuration = Configuration;
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BSP_RTEMS_Configuration = *Configuration.RTEMS_api_configuration;
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BSP_Configuration.RTEMS_api_configuration = &BSP_RTEMS_Configuration;
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#ifdef RTEMS_POSIX_API
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BSP_POSIX_Configuration = *Configuration.POSIX_api_configuration;
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BSP_Configuration.POSIX_api_configuration = &BSP_POSIX_Configuration;
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#endif
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/*
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* The atexit hook will be before the static destructor list's entry
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* point.
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*/
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bsp_start();
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/*
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* Initialize RTEMS but do NOT start multitasking.
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*/
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bsp_isr_level =
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rtems_initialize_executive_early( &BSP_Configuration, &Cpu_table );
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/*
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* Call main() and get the global constructors invoked if there
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* are any.
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*/
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#ifdef USE_INIT_FINI
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atexit( _fini );
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#endif
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status = main( argc, argv_p, envp_p );
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/*
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* Perform any BSP specific shutdown actions.
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*/
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bsp_cleanup();
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/*
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* Now return to the start code.
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*/
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return status;
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}
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