diff packages/hal/powerpc/arch/current/src/hal_misc.c @ 0:3111d98ba7b3 ecos-v1_1-release

Initial commit of eCos version 1.1
author jlarmour
date Tue, 11 May 1999 11:16:07 +0000
parents
children 443894e2e912
line wrap: on
line diff
new file mode 100644
--- /dev/null
+++ b/packages/hal/powerpc/arch/current/src/hal_misc.c
@@ -0,0 +1,130 @@
+//=============================================================================
+//
+//      hal_misc.c
+//
+//      HAL miscellaneous functions
+//
+//=============================================================================
+//####COPYRIGHTBEGIN####
+//
+// -------------------------------------------
+// The contents of this file are subject to the Cygnus eCos Public License
+// Version 1.0 (the "License"); you may not use this file except in
+// compliance with the License.  You may obtain a copy of the License at
+// http://sourceware.cygnus.com/ecos
+// 
+// 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 Cygnus Operating System, released
+// September 30, 1998.
+// 
+// The Initial Developer of the Original Code is Cygnus.  Portions created
+// by Cygnus are Copyright (C) 1998 Cygnus Solutions.  All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+//=============================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):   nickg
+// Contributors:        nickg
+// Date:        1997-11-12
+// Purpose:     HAL miscellaneous functions
+// Description: This file contains miscellaneous functions provided by the
+//              HAL.
+//
+//####DESCRIPTIONEND####
+//
+//=============================================================================
+
+#include <pkgconf/hal.h>
+
+#include <cyg/infra/cyg_type.h>
+#include <cyg/infra/cyg_trac.h>         // tracing macros
+#include <cyg/infra/cyg_ass.h>          // assertion macros
+
+#include <cyg/hal/hal_arch.h>           // HAL header
+
+//---------------------------------------------------------------------------
+
+void cyg_hal_invoke_constructors (void)
+{
+    static int initialized = 0;
+
+    if (! initialized)
+    {
+        typedef void (*pfunc) (void);
+        extern pfunc __CTOR_LIST__[];
+        extern pfunc __CTOR_END__[];
+        pfunc *p;
+
+        initialized = 1;
+
+        for (p = &__CTOR_END__[0]-1; p >= __CTOR_LIST__; p--){
+            (*p) ();
+        }
+    }
+}
+
+// Override any __eabi the compiler might generate. We don't want
+// constructors to be called twice.
+void __eabi (void) {}
+
+//---------------------------------------------------------------------------
+// First level C exception handler.
+
+externC void __handle_exception (void);
+
+externC HAL_SavedRegisters *_hal_registers;
+
+void exception_handler(HAL_SavedRegisters *regs)
+{
+#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
+
+    // Set the pointer to the registers of the current exception
+    // context. At entry the GDB stub will expand the
+    // HAL_SavedRegisters structure into a (bigger) register array.
+    _hal_registers = regs;
+
+    __handle_exception();
+
+#elif defined(CYGFUN_HAL_COMMON_KERNEL_SUPPORT) && defined(CYGPKG_HAL_EXCEPTIONS)
+
+    // We should decode the vector and pass a more appropriate
+    // value as the second argument. For now we simply pass a
+    // pointer to the saved registers. We should also divert
+    // breakpoint and other debug vectors into the debug stubs.
+
+    deliver_exception( regs->vector>>8, (CYG_ADDRWORD)regs );
+
+#else
+
+    CYG_FAIL("Exception!!!");
+    
+#endif    
+    
+    return;
+}
+
+//---------------------------------------------------------------------------
+// Default ISR
+
+externC cyg_uint32 hal_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data)
+{
+    CYG_TRACE1(true, "Interrupt: %d", vector);
+    CYG_FAIL("Spurious Interrupt!!!");
+    return 0;
+}
+
+//---------------------------------------------------------------------------
+// Idle thread action
+
+void hal_idle_thread_action( cyg_uint32 count )
+{
+}
+
+//---------------------------------------------------------------------------
+// End of hal_misc.c