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//===========================================================================
//
// longjmp.cxx
//
// ISO C standard longjmp() function
//
//===========================================================================
// ####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:
// Description: Implements ISO standard non-local jump function longjmp()
// per ISO C para 7.6.2.1. This is the "real" alternative to
// the inline version of longjmp()
//
// Usage:
//
//####DESCRIPTIONEND####
//
//===========================================================================
// CONFIGURATION
#include <pkgconf/libc_setjmp.h> // Configuration header
// INCLUDES
#include <cyg/infra/cyg_type.h> // Common type definitions and support
#include <cyg/infra/cyg_trac.h> // Common tracing code
#include <cyg/infra/cyg_ass.h> // Common assertion code
#include <cyg/hal/hal_arch.h> // HAL architecture specific implementation
// We don't want the inline version of longjmp() defined here
#ifdef CYGIMP_LIBC_SETJMP_INLINES
# undef CYGIMP_LIBC_SETJMP_INLINES
#endif
#include <setjmp.h> // Header for setjmp/longjmp
// FUNCTIONS
void
longjmp( jmp_buf cyg_buf, int cyg_val)
{
CYG_REPORT_FUNCNAME( "longjmp" );
CYG_REPORT_FUNCARG2( "&cyg_buf=%08x, cyg_val=%d", &cyg_buf, cyg_val );
// ANSI says that if we are passed cyg_val==0, then we change it to 1
if (cyg_val == 0)
++cyg_val;
// we let the HAL do the work
HAL_REORDER_BARRIER(); // prevent any chance of optimisation re-ordering
hal_longjmp( cyg_buf, cyg_val );
HAL_REORDER_BARRIER(); // prevent any chance of optimisation re-ordering
#ifdef CYGDBG_USE_ASSERTS
CYG_ASSERT( 0, "longjmp should not have reached this point!" );
#else
for (;;)
CYG_EMPTY_STATEMENT;
#endif
} // longjmp()
// EOF longjmp.cxx
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