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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: solar.c,v $
+ * $Revision: 1.6 $
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+/* POSIX defines that a program is undefined after a SIG_SEGV. The
+ * code stopped working on Linux Kernel 2.6 so I have moved this back to
+ * use FORK.
+ * If at a later time the signals work correctly with the Linux Kernel 2.6
+ * then this change may be reverted although not strictly posix safe. */
+#define USE_FORK_TO_CHECK 1
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+#include <unistd.h>
+#include <sys/types.h>
+
+#define I_STDARG
+#ifdef I_STDARG
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#define NO_USE_FORK_TO_CHECK
+#ifdef USE_FORK_TO_CHECK
+#include <sys/wait.h>
+#else
+#include <signal.h>
+#include <setjmp.h>
+#endif
+
+#define printTypeSize(Type,Name) printf( "sizeof(%s)\t= %d\n", Name, sizeof (Type) )
+
+#define isSignedType(Type) (((Type)-1) < 0)
+#define printTypeSign(Type,Name) printf( "%s\t= %s %s\n", Name, ( isSignedType(Type) ? "signed" : "unsigned" ), Name )
+
+
+/*************************************************************************
+|*
+|* IsBigEndian()
+|*
+|* Beschreibung True, wenn CPU BigEndian ist
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+int IsBigEndian()
+{
+ long l = 1;
+ return ! *(char*)&l;
+}
+
+/*************************************************************************
+|*
+|* IsStackGrowingDown()
+|*
+|* Beschreibung True, wenn der Stack nach unten waechst
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+int IsStackGrowingDown_2( int * pI )
+{
+ int i = 1;
+ return ((unsigned long)&i) < (unsigned long)pI;
+}
+
+int IsStackGrowingDown()
+{
+ int i = 1;
+ return IsStackGrowingDown_2(&i);
+}
+
+/*************************************************************************
+|*
+|* GetStackAlignment()
+|*
+|* Beschreibung Alignment von char Parametern, die (hoffentlich)
+|* ueber den Stack uebergeben werden
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+int GetStackAlignment_3( char*p, long l, int i, short s, char b, char c, ... )
+{
+ if ( IsStackGrowingDown() )
+ return &c - &b;
+ else
+ return &b - &c;
+}
+
+int GetStackAlignment_2( char*p, long l, int i, short s, char b, char c )
+{
+ if ( IsStackGrowingDown() )
+ return &c - &b;
+ else
+ return &b - &c;
+}
+
+int GetStackAlignment()
+{
+ int nStackAlignment = GetStackAlignment_3(0,1,2,3,4,5);
+ if ( nStackAlignment != GetStackAlignment_2(0,1,2,3,4,5) )
+ printf( "Pascal calling convention\n" );
+ return nStackAlignment;
+}
+
+
+/*************************************************************************
+|*
+|* Typdeclarations for memory access test functions
+|*
+*************************************************************************/
+typedef enum { t_char, t_short, t_int, t_long, t_double } Type;
+typedef int (*TestFunc)( Type, void* );
+
+
+/*************************************************************************
+|*
+|* PrintArgs()
+|*
+|* Beschreibung Testfunktion fuer variable Parameter
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+#ifdef I_STDARG
+void PrintArgs( int p, ... )
+#else
+void PrintArgs( p, va_alist )
+int p;
+va_dcl
+#endif
+{
+ int value;
+ va_list ap;
+
+#ifdef I_STDARG
+ va_start( ap, p );
+#else
+ va_start( ap );
+#endif
+
+ printf( "value = %d", p );
+
+ while ( ( value = va_arg(ap, int) ) != 0 )
+ printf( " %d", value );
+
+ printf( "\n" );
+ va_end(ap);
+}
+
+#ifndef USE_FORK_TO_CHECK
+/*************************************************************************
+|*
+|* SignalHdl()
+|*
+|* Beschreibung faengt SIGBUS und SIGSEGV in check() ab
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+static jmp_buf check_env;
+static int bSignal;
+void SignalHdl( int sig )
+{
+ bSignal = 1;
+
+ fprintf( stderr, "Signal %d caught\n", sig );
+ signal( SIGSEGV, SIG_DFL );
+ signal( SIGBUS, SIG_DFL );
+ siglongjmp( check_env, sig );
+}
+#endif
+
+/*************************************************************************
+|*
+|* check()
+|*
+|* Beschreibung Testet MemoryZugriff (read/write)
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+int check( TestFunc func, Type eT, void* p )
+{
+#ifdef USE_FORK_TO_CHECK
+ pid_t nChild = fork();
+ if ( nChild )
+ {
+ int exitVal;
+ wait( &exitVal );
+ if ( exitVal & 0xff )
+ return -1;
+ else
+ return exitVal >> 8;
+ }
+ else
+ {
+ exit( func( eT, p ) );
+ }
+#else
+ int result;
+
+ bSignal = 0;
+
+ if ( !sigsetjmp( check_env, 1 ) )
+ {
+ signal( SIGSEGV, SignalHdl );
+ signal( SIGBUS, SignalHdl );
+ result = func( eT, p );
+ signal( SIGSEGV, SIG_DFL );
+ signal( SIGBUS, SIG_DFL );
+ }
+
+ if ( bSignal )
+ return -1;
+ else
+ return 0;
+#endif
+}
+
+/*************************************************************************
+|*
+|* GetAtAddress()
+|*
+|* Beschreibung memory read access
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+int GetAtAddress( Type eT, void* p )
+{
+ switch ( eT )
+ {
+ case t_char: return *((char*)p);
+ case t_short: return *((short*)p);
+ case t_int: return *((int*)p);
+ case t_long: return *((long*)p);
+ case t_double: return *((double*)p);
+ }
+ abort();
+}
+
+/*************************************************************************
+|*
+|* SetAtAddress()
+|*
+|* Beschreibung memory write access
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+int SetAtAddress( Type eT, void* p )
+{
+ switch ( eT )
+ {
+ case t_char: return *((char*)p) = 0;
+ case t_short: return *((short*)p) = 0;
+ case t_int: return *((int*)p) = 0;
+ case t_long: return *((long*)p) = 0;
+ case t_double: return *((double*)p)= 0;
+ }
+ abort();
+}
+
+char* TypeName( Type eT )
+{
+ switch ( eT )
+ {
+ case t_char: return "char";
+ case t_short: return "short";
+ case t_int: return "int";
+ case t_long: return "long";
+ case t_double: return "double";
+ }
+ abort();
+}
+
+/*************************************************************************
+|*
+|* Check(Get|Set)Access()
+|*
+|* Beschreibung Testet MemoryZugriff (read/write)
+|* Zugriffsverletzungen werden abgefangen
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+int CheckGetAccess( Type eT, void* p )
+{
+ int b;
+ b = -1 != check( (TestFunc)GetAtAddress, eT, p );
+#if OSL_DEBUG_LEVEL > 1
+ fprintf( stderr,
+ "%s read %s at %p\n",
+ (b? "can" : "can not" ), TypeName(eT), p );
+#endif
+ return b;
+}
+int CheckSetAccess( Type eT, void* p )
+{
+ int b;
+
+ b = -1 != check( (TestFunc)SetAtAddress, eT, p );
+#if OSL_DEBUG_LEVEL > 1
+ fprintf( stderr,
+ "%s write %s at %p\n",
+ (b? "can" : "can not" ), TypeName(eT), p );
+#endif
+ return b;
+}
+
+/*************************************************************************
+|*
+|* GetAlignment()
+|*
+|* Beschreibung Bestimmt das Alignment verschiedener Typen
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+int GetAlignment( Type eT )
+{
+ char a[ 16*8 ];
+ long p = (long)(void*)a;
+ int i;
+
+ /* clear a[...] to set legal value for double access */
+ for ( i = 0; i < 16*8; i++ )
+ a[i] = 0;
+
+ p = ( p + 0xF ) & ~0xF;
+ for ( i = 1; i < 16; i++ )
+ if ( CheckGetAccess( eT, (void*)(p+i) ) )
+ return i;
+ return 0;
+}
+
+/*************************************************************************
+|*
+|* struct Description
+|*
+|* Beschreibung Beschreibt die Parameter der Architektur
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+struct Description
+{
+ int bBigEndian;
+ int bStackGrowsDown;
+ int nStackAlignment;
+ int nAlignment[3]; /* 2,4,8 */
+};
+
+/*************************************************************************
+|*
+|* Description_Ctor()
+|*
+|* Beschreibung Bestimmt die Parameter der Architektur
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+void Description_Ctor( struct Description* pThis )
+{
+ pThis->bBigEndian = IsBigEndian();
+ pThis->bStackGrowsDown = IsStackGrowingDown();
+ pThis->nStackAlignment = GetStackAlignment();
+
+ if ( sizeof(short) != 2 )
+ abort();
+ pThis->nAlignment[0] = GetAlignment( t_short );
+ if ( sizeof(int) != 4 )
+ abort();
+ pThis->nAlignment[1] = GetAlignment( t_int );
+
+ if ( sizeof(long) == 8 )
+ pThis->nAlignment[2] = GetAlignment( t_long );
+ else if ( sizeof(double) == 8 )
+ pThis->nAlignment[2] = GetAlignment( t_double );
+ else
+ abort();
+}
+
+/*************************************************************************
+|*
+|* Description_Print()
+|*
+|* Beschreibung Schreibt die Parameter der Architektur als Header
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+void Description_Print( struct Description* pThis, char* name )
+{
+ int i;
+ FILE* f = fopen( name, "w" );
+ if( ! f ) {
+ fprintf( stderr, "Unable to open file %s: %s\n", name, strerror( errno ) );
+ exit( 99 );
+ }
+ fprintf( f, "#define __%s\n",
+ pThis->bBigEndian ? "BIGENDIAN" : "LITTLEENDIAN" );
+ for ( i = 0; i < 3; i++ )
+ fprintf( f, "#define __ALIGNMENT%d\t%d\n",
+ 1 << (i+1), pThis->nAlignment[i] );
+ fprintf( f, "/* Stack alignment is not used... */\n" );
+ fprintf( f, "#define __STACKALIGNMENT\t%d\n", pThis->nStackAlignment );
+ fprintf( f, "#define __STACKDIRECTION\t%d\n",
+ pThis->bStackGrowsDown ? -1 : 1 );
+ fprintf( f, "#define __SIZEOFCHAR\t%d\n", sizeof( char ) );
+ fprintf( f, "#define __SIZEOFSHORT\t%d\n", sizeof( short ) );
+ fprintf( f, "#define __SIZEOFINT\t%d\n", sizeof( int ) );
+ fprintf( f, "#define __SIZEOFLONG\t%d\n", sizeof( long ) );
+ fprintf( f, "#define __SIZEOFPOINTER\t%d\n", sizeof( void* ) );
+ fprintf( f, "#define __SIZEOFDOUBLE\t%d\n", sizeof( double ) );
+ fprintf( f, "#define __IEEEDOUBLE\n" );
+ fclose( f );
+}
+
+/*************************************************************************
+|*
+|* InfoMemoryAccess()
+|*
+|* Beschreibung Informeller Bytezugriffstest
+|*
+|* Ersterstellung EG 26.06.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+void InfoMemoryAccess( char* p )
+{
+ if ( CheckGetAccess( t_char, p ) )
+ printf( "can read address %p\n", p );
+ else
+ printf( "can not read address %p\n", p );
+
+ if ( CheckSetAccess( t_char, p ) )
+ printf( "can write address %p\n", p );
+ else
+ printf( "can not write address %p\n", p );
+}
+
+/*************************************************************************
+|*
+|* InfoMemoryTypeAccess()
+|*
+|* Beschreibung Informeller Zugriffstest verschiedener Typen
+|*
+|* Ersterstellung EG 15.08.96
+|* Letzte Aenderung
+|*
+*************************************************************************/
+void InfoMemoryTypeAccess( Type eT )
+{
+ char a[64];
+ int i;
+
+ /* clear a[...] to set legal value for double access */
+ for ( i = 0; i < 64; i++ )
+ a[i] = 0;
+
+ for ( i = 56; i >= 7; i >>= 1 )
+ {
+ printf( "Zugriff %s auf %i-Aligned Adresse : ", TypeName( eT ), i / 7 );
+ printf( ( CheckGetAccess( eT, (long*)&a[i] ) ? "OK\n" : "ERROR\n" ) );
+ }
+}
+/************************************************************************
+ *
+ * Use C code to determine the characteristics of the building platform.
+ *
+ ************************************************************************/
+int main( int argc, char* argv[] )
+{
+ printTypeSign( char, "char" );
+ printTypeSign( short, "short" );
+ printTypeSign( int, "int" );
+ printTypeSign( long, "long" );
+
+ printTypeSize( char, "char" );
+ printTypeSize( short, "short" );
+ printTypeSize( int, "int" );
+ printTypeSize( long, "long" );
+ printTypeSize( float, "float" );
+ printTypeSize( double, "double" );
+ printTypeSize( void *, "void *" );
+
+ if ( IsBigEndian() )
+ printf( "BIGENDIAN (Sparc, MC680x0, RS6000, IP22, IP32, g3)\n" );
+ else
+ printf( "LITTLEENDIAN (Intel, VAX, PowerPC)\n" );
+
+ if( IsStackGrowingDown() )
+ printf( "Stack waechst nach unten\n" );
+ else
+ printf( "Stack waechst nach oben\n" );
+
+ printf( "STACKALIGNMENT : %d\n", GetStackAlignment() );
+
+ /* PrintArgs( 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 ); */
+
+ if ( argc > 1 )
+ {
+ struct Description description;
+ Description_Ctor( &description );
+ Description_Print( &description, argv[1] );
+ }
+ {
+ char* p = NULL;
+ InfoMemoryAccess( p );
+ p = (char*)&p;
+ InfoMemoryAccess( p );
+ InfoMemoryTypeAccess( t_short );
+ InfoMemoryTypeAccess( t_int );
+ InfoMemoryTypeAccess( t_long );
+ InfoMemoryTypeAccess( t_double );
+ }
+
+ exit( 0 );
+}
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