os/kernelhwsrv/kernel/eka/compsupp/rvct2_2/ucppfini.cpp
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib.
     1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
     2 // All rights reserved.
     3 // This component and the accompanying materials are made available
     4 // under the terms of the License "ARM EABI LICENCE.txt"
     5 // which accompanies this distribution, and is available
     6 // in kernel/eka/compsupp.
     7 //
     8 // Initial Contributors:
     9 // Nokia Corporation - initial contribution.
    10 //
    11 // Contributors:
    12 //
    13 // Description:
    14 // toplevel destruction routines for 'user side' code compiled 
    15 // with the ARMEDG compiler.
    16 // 
    17 //
    18 
    19 #include "cppinit.h"
    20 
    21 extern "C" {
    22 
    23 #define MAX_DTOR_RECORDS 256
    24 static dtd dtor_rec[MAX_DTOR_RECORDS];
    25 
    26 typedef dtd **dso_handle;
    27 dtd * __dso_handle = &dtor_rec[MAX_DTOR_RECORDS];
    28 
    29 void __cxa_finalize ( dso_handle d );
    30 
    31 // Need to decide what this should do we run out of dtor space.
    32 // Probably need to run __cxa_finalize then do some kind of panic.
    33 void CppBSSInitializationError()
    34     {
    35 //  __cxa_finalize(&dtor_rec[0]);
    36     };
    37 
    38 // This is called by compiler generated code to record needed destructions of
    39 // dynamically initialized (ctor) top level (BSS) data. 
    40 // I guess this is more efficient for the compiler than __cxa_atexit, since 
    41 // it takes the object that needs dtoring as its first arg, which means its in
    42 // the right register when the ctor returns.
    43 void __aeabi_atexit(void *aObject, void (*aDtor)(void *), dso_handle aHandle)
    44     {
    45     dtd * drec = *aHandle;
    46     drec--;
    47 
    48     if (drec < &dtor_rec[0])
    49       // Need to decide what to do here
    50       return CppBSSInitializationError();
    51 
    52     drec->dtor = aDtor;
    53     drec->obj = aObject;
    54     *aHandle = drec;
    55     }
    56 
    57 int __cxa_atexit ( void (*aDtor)(void *), void *aObject, dso_handle aHandle )
    58     {
    59       __aeabi_atexit(aObject, aDtor, aHandle);
    60 
    61     // This is what the C++ GABI spec says to do!!
    62     if (*aHandle < &dtor_rec[0]) 
    63       return -1;
    64     return 0;
    65     }
    66 
    67 void __cxa_finalize ( dso_handle d )
    68     {
    69     dtd * drec = * d;
    70     dtd * lim = &dtor_rec[MAX_DTOR_RECORDS];
    71     while (drec < lim) 
    72         {
    73 	drec->dtor(drec->obj);
    74 	drec++;
    75         }
    76     *d = drec;
    77     }
    78 
    79 void run_static_dtors (void)
    80     {
    81     __cxa_finalize(&__dso_handle);
    82     }
    83 }
    84