diff packages/language/c/libc/startup/current/src/cstartup.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 e0c0827131d1
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+++ b/packages/language/c/libc/startup/current/src/cstartup.cxx
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+//=======================================================================
+//
+//      cstartup.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:     
+// Description: 
+// Usage:       
+//
+//####DESCRIPTIONEND####
+//
+//========================================================================
+
+// CONFIGURATION
+
+#include <pkgconf/system.h>         // CYGPKG_KERNEL
+#include <pkgconf/libc_startup.h>   // Configuration header
+
+// INCLUDES
+
+#include <cyg/infra/cyg_type.h>     // Common type definitions and support
+#include <cyg/infra/cyg_trac.h>     // Common tracing support
+
+#ifdef CYGPKG_KERNEL
+# include <pkgconf/kernel.h>        // eCos kernel configuration
+# include <cyg/kernel/thread.hxx>   // eCos thread support
+# include <cyg/kernel/thread.inl>
+#endif
+
+
+// FUNCTION PROTOTYPES
+
+externC void
+cyg_libc_invoke_main( CYG_ADDRWORD );
+
+// EXTERNS
+
+#ifdef CYGSEM_LIBC_STARTUP_MAIN_THREAD
+extern Cyg_Thread cyg_libc_main_thread;
+
+// FUNCTIONS
+
+externC void
+cyg_iso_c_start( void )
+{
+    static int initialized=0;
+
+    CYG_REPORT_FUNCNAME( "cyg_iso_c_start" );
+    CYG_REPORT_FUNCARGVOID();
+
+    if (initialized++ == 0) {
+        CYG_TRACE0( true, "Resuming cyg_libc_main_thread" );
+        cyg_libc_main_thread.resume();
+    }
+    CYG_REPORT_RETURN();
+
+} // cyg_iso_c_start()
+
+// define an object that will automatically call cyg_iso_c_start()
+
+class cyg_libc_startup_dummy_constructor_class {
+public:
+    cyg_libc_startup_dummy_constructor_class() { cyg_iso_c_start(); }
+};
+
+static cyg_libc_startup_dummy_constructor_class cyg_libc_startup_obj
+                                  CYGBLD_ATTRIB_INIT_PRI(CYG_INIT_LIBC);
+
+#elif defined( CYGSEM_LIBC_STARTUP_MAIN_INITCONTEXT )
+
+// otherwise replace the default cyg_user_start(), but of course keep
+// it a weak symbol in case the user wants to override
+
+externC void
+cyg_user_start(void) CYGBLD_ATTRIB_WEAK;
+
+externC void
+cyg_user_start(void)
+{
+    cyg_libc_invoke_main(0);
+}
+
+externC void
+cyg_iso_c_start( void )
+{
+    static int initialized=0;
+
+    CYG_REPORT_FUNCNAME( "cyg_iso_c_start" );
+    CYG_REPORT_FUNCARGVOID();
+
+    // In case they want to explicitly invoke the C library from
+    // cyg_user_start() themselves
+    if (initialized++ == 0) {
+        cyg_libc_invoke_main(0);
+    }
+    CYG_REPORT_RETURN();
+}
+#else
+
+externC void
+cyg_iso_c_start( void ) {}
+
+#endif
+
+// EOF cstartup.cxx