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//===========================================================================

//

//      longjmp.cxx

//

//      ISO C standard longjmp() function

//

//===========================================================================

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// -------------------------------------------

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//===========================================================================

//#####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