diff packages/language/c/libc/startup/current/src/invokemain.cxx @ 115:6ed91473a1cd ecos-sw-2000-08-21

Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
parents
children 678094f34118
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+++ b/packages/language/c/libc/startup/current/src/invokemain.cxx
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+//=======================================================================
+//
+//      invokemain.cxx
+//
+//      Support for startup of ISO C environment
+//
+//========================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (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.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):     jlarmour
+// Contributors:  
+// Date:          2000-04-30
+// Purpose:       Provide entry point for thread which then calls main()
+// Description:   cyg_libc_invoke_main() is used as the entry point for
+//                the thread object that is created to call the
+//                user-supplied main() function. It sets up the arguments
+//                (if any) and invokes exit() if main() returns
+// Usage:       
+//
+//####DESCRIPTIONEND####
+//
+//========================================================================
+
+// CONFIGURATION
+
+#include <pkgconf/libc_startup.h>  // Configuration header
+#include <pkgconf/isoinfra.h>
+
+// INCLUDES
+
+#include <cyg/infra/cyg_type.h>    // Common type definitions and support
+#include <cyg/infra/cyg_trac.h>    // Common tracing support
+#include <cyg/infra/cyg_ass.h>     // Common assertion support
+#include <stdlib.h>                // exit()
+
+// EXTERNS
+
+externC cyg_bool cyg_hal_stop_constructors;
+
+// FUNCTION PROTOTYPES
+
+externC int
+main( int argc, char *argv[] );
+
+externC void
+cyg_hal_invoke_constructors(void);
+
+externC void
+pthread_exit( void *value_ptr );
+
+// STATICS
+
+#ifdef CYGSEM_LIBC_INVOKE_DEFAULT_STATIC_CONSTRUCTORS
+class cyg_libc_dummy_constructor_class {
+public:
+    cyg_libc_dummy_constructor_class(void) { ++cyg_hal_stop_constructors; }
+};
+
+static cyg_libc_dummy_constructor_class cyg_libc_dummy_constructor_obj
+                                  CYGBLD_ATTRIB_INIT_PRI(CYG_INIT_PREDEFAULT);
+#endif
+
+// FUNCTIONS
+
+externC void
+cyg_libc_invoke_main( CYG_ADDRWORD )
+{
+    CYG_REPORT_FUNCNAME( "cyg_libc_invoke_main" );
+    CYG_REPORT_FUNCARG1( "argument is %s", "ignored" );
+
+#ifdef CYGSEM_LIBC_INVOKE_DEFAULT_STATIC_CONSTRUCTORS
+    // finish invoking constructors that weren't called by default
+    cyg_hal_invoke_constructors();
+#endif
+
+    // argv[argc] must be NULL according to the ISO C standard 5.1.2.2.1
+    char *temp_argv[] = CYGDAT_LIBC_ARGUMENTS ; 
+    int rc;
+    
+    rc = main( (sizeof(temp_argv)/sizeof(char *)) - 1, &temp_argv[0] );
+
+    CYG_TRACE1( true, "main() has returned with code %d. Calling exit()",
+                rc );
+
+#if CYGINT_ISO_PTHREAD_IMPL > 0
+    // It is up to pthread_exit() to call exit() if needed
+    pthread_exit( (void *)rc );
+    CYG_FAIL( "pthread_exit() returned!!!" );
+#else
+    exit(rc);
+    CYG_FAIL( "exit() returned!!!" );
+#endif
+
+    CYG_REPORT_RETURN();
+    
+} // cyg_libc_invoke_main()
+
+// EOF invokemain.cxx