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harbour-core/include/hbinit.h
Viktor Szakats 5a2a287752 2017-09-08 16:00 UTC Viktor Szakats (vszakats users.noreply.github.com) 
* *
    * partial sync with the 3.4 fork codebase. These are the things
      synces for the most part:
      - copyright headers
      - grammar/typos in comments and some readmes
      - comment/whitespace/decorations
      - variable scoping in C files
      - DO CASE/SWITCH and some other alternate syntax usage
      - minimal amount of human readable text in strings
      - minor code updates
      - HB_TRACE() void * casts for pointers and few other changes to
        avoid C compiler warnings
      - various other, minor code cleanups
      - only Harbour/C code/headers were touched in src, utils, contrib,
        include. No 3rd party code, no make files, and with just a few
        exceptions, no 'tests' code was touched.
      - certain components were not touched were 3.4 diverged too much
        already, like f.e. hbmk2, hbssl, hbcurl, hbexpat
      - the goal was that no actual program logic should be altered by
        these changes. Except some possible minor exceptions, any such
        change is probably a bug in this patch.
      It's a massive patch, if you find anything broken after it, please
      open an Issue with the details. Build test was done on macOS.
      The goal is make it easier to see what actual code/logic was changed
      in 3.4 compared to 3.2 and to make patches easier to apply in both
      ways.
2017-09-08 16:25:13 +00:00

324 lines
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C
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/*
* Header file for automatic static initialization
*
* Copyright 1999 Antonio Linares <alinares@fivetech.com>
*
* This program 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.
*
* This program 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 this program; see the file LICENSE.txt. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA (or visit https://www.gnu.org/licenses/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
#ifndef HB_INIT_H_
#define HB_INIT_H_
#include "hbsetup.h"
HB_EXTERN_BEGIN
extern HB_EXPORT PHB_SYMB hb_vmProcessSymbols( PHB_SYMB pSymbols, HB_USHORT uiSymbols, const char * szModuleName, HB_ULONG ulID, HB_USHORT uiPcodeVer ); /* module symbols initialization with extended information */
#define HB_INIT_SYMBOLS_END( func ) HB_INIT_SYMBOLS_EX_END( func, "", 0L, 0x0000 )
/* By default in all C++ builds use static variable initialization as startup
code with the exception for GCC which new versions show warning about
defined but not used static variable initialized with this method. */
#if defined( __cplusplus ) && ! defined( HB_STATIC_STARTUP ) && \
! defined( HB_PRAGMA_STARTUP ) && ! defined( HB_GNUC_STARTUP ) && \
! defined( HB_INITSEG_STARTUP ) && ! defined( HB_DATASEG_STARTUP ) && \
! defined( __GNUC__ )
#define HB_STATIC_STARTUP
#endif
#define HB_INIT_SYMBOLS_COUNT ( sizeof( symbols_table ) / sizeof( HB_SYMB ) )
#if defined( HB_STRICT_ANSI_C )
#define HB_INIT_SYMBOLS_BEGIN( func ) \
static HB_SYMB symbols_table[] = {
#define HB_INIT_SYMBOLS_EX_END( func, module, id, vpcode ) \
}; \
static PHB_SYMB symbols = symbols_table; \
void func( void ) \
{ \
symbols = hb_vmProcessSymbols( symbols_table, ( HB_USHORT ) HB_INIT_SYMBOLS_COUNT, (module), (id), (vpcode) ); \
}
#define HB_CALL_ON_STARTUP_BEGIN( func ) \
void func( void ) \
{
#define HB_CALL_ON_STARTUP_END( func ) \
}
#elif defined( HB_STATIC_STARTUP )
#if defined( HB_PRAGMA_STARTUP ) || defined( HB_DATASEG_STARTUP )
#error Wrong macros set for startup code - clean your make/env settings.
#endif
#define HB_INIT_SYMBOLS_BEGIN( func ) \
static HB_SYMB symbols_table[] = {
#define HB_INIT_SYMBOLS_EX_END( func, module, id, vpcode ) \
}; \
static PHB_SYMB symbols = hb_vmProcessSymbols( symbols_table, ( HB_USHORT ) HB_INIT_SYMBOLS_COUNT, (module), (id), (vpcode) ); \
#define HB_CALL_ON_STARTUP_BEGIN( func ) \
static int func( void ) \
{
/* this allows any macros to be preprocessed first
so that token pasting is handled correctly */
#define HB_CALL_ON_STARTUP_END( func ) \
_HB_CALL_ON_STARTUP_END( func )
#define _HB_CALL_ON_STARTUP_END( func ) \
return 0; \
} \
static int static_int_##func = func();
#elif defined( HB_INITSEG_STARTUP )
#if defined( HB_PRAGMA_STARTUP ) || defined( HB_DATASEG_STARTUP )
#error Wrong macros set for startup code - clean your make/env settings.
#endif
#if defined( _M_COFF )
#define HB_STARTUP_INITSEGMENT ".init, \"x\""
#else
#define HB_STARTUP_INITSEGMENT ".init"
#endif
#define HB_INIT_SYMBOLS_BEGIN( func ) \
static HB_SYMB symbols_table[] = {
#define HB_INIT_SYMBOLS_EX_END( func, module, id, vpcode ) \
}; \
static PHB_SYMB symbols = symbols_table; \
HB_CALL_ON_STARTUP_BEGIN( func ) \
symbols = hb_vmProcessSymbols( symbols_table, ( HB_USHORT ) HB_INIT_SYMBOLS_COUNT, (module), (id), (vpcode) ); \
HB_CALL_ON_STARTUP_END( func )
#define HB_CALL_ON_STARTUP_BEGIN( func ) \
HB_EXTERN_BEGIN \
static void func( void ) \
{
#define HB_CALL_ON_STARTUP_END( func ) \
} \
HB_INIT_FUNCTION_REF( func ) \
HB_EXTERN_END \
asm ( ".section " HB_STARTUP_INITSEGMENT \
"\n\tcall " HB_MACRO2STRING( func ) \
"\n\t.section .text\n\t" );
/* TODO: if possible use other way without public symbols to mark function
* as used so it's not removed by C compiler optimization logic
*/
#define HB_INIT_FUNCTION_REF( func ) \
extern void * func##_ref_( void ); \
void * func##_ref_( void ) \
{ \
return ( void * ) func; \
}
#elif defined( HB_GNUC_STARTUP ) || \
defined( __GNUC__ ) || \
defined( __SUNPRO_C ) || defined( __SUNPRO_CC ) || \
defined( __DCC__ ) || \
defined( __TINYC__ ) /* FIXME: __TINYC__ */ || \
defined( __clang__ )
#if defined( HB_PRAGMA_STARTUP ) || defined( HB_DATASEG_STARTUP )
#error Wrong macros set for startup code - clean your make/env settings.
#endif
#define HB_INIT_SYMBOLS_BEGIN( func ) \
static HB_SYMB symbols_table[] = {
#if defined( __DCC__ )
#define HB_INIT_SYMBOLS_EX_END( func, module, id, vpcode ) \
}; \
static PHB_SYMB symbols = symbols_table; \
void __attribute__ ((constructor)) func( void ) \
{ \
symbols = hb_vmProcessSymbols( symbols_table, ( HB_USHORT ) HB_INIT_SYMBOLS_COUNT, (module), (id), (vpcode) ); \
}
#define HB_CALL_ON_STARTUP_BEGIN( func ) \
void __attribute__ ((constructor)) func( void ) \
{
#else
#define HB_INIT_SYMBOLS_EX_END( func, module, id, vpcode ) \
}; \
static PHB_SYMB symbols = symbols_table; \
static void __attribute__ ((constructor)) func( void ) \
{ \
symbols = hb_vmProcessSymbols( symbols_table, ( HB_USHORT ) HB_INIT_SYMBOLS_COUNT, (module), (id), (vpcode) ); \
}
#define HB_CALL_ON_STARTUP_BEGIN( func ) \
static void __attribute__ ((constructor)) func( void ) \
{
#endif
#define HB_CALL_ON_STARTUP_END( func ) \
}
#elif defined( HB_PRAGMA_STARTUP ) || \
defined( __BORLANDC__ ) || defined( __LCC__ ) || \
defined( __POCC__ ) || defined( __XCC__ )
#if ! defined( HB_PRAGMA_STARTUP )
#define HB_PRAGMA_STARTUP
#endif
#define HB_INIT_SYMBOLS_BEGIN( func ) \
static HB_SYMB symbols_table[] = {
#define HB_INIT_SYMBOLS_EX_END( func, module, id, vpcode ) \
}; \
static PHB_SYMB symbols = symbols_table; \
static void func( void ) \
{ \
symbols = hb_vmProcessSymbols( symbols_table, ( HB_USHORT ) HB_INIT_SYMBOLS_COUNT, (module), (id), (vpcode) ); \
}
#define HB_CALL_ON_STARTUP_BEGIN( func ) \
static void func( void ) \
{
#define HB_CALL_ON_STARTUP_END( func ) \
}
#elif defined( _MSC_VER )
#define HB_DATASEG_STARTUP
#if _MSC_VER >= 1010
#define HB_STARTUP_SEGMENT ".CRT$XIY"
#else
#define HB_STARTUP_SEGMENT "XIY"
#endif
#define HB_INIT_SYMBOLS_BEGIN( func ) \
static HB_SYMB symbols_table[] = {
#define HB_INIT_SYMBOLS_EX_END( func, module, id, vpcode ) \
}; \
static PHB_SYMB symbols = symbols_table; \
static int func( void ) \
{ \
symbols = hb_vmProcessSymbols( symbols_table, ( HB_USHORT ) HB_INIT_SYMBOLS_COUNT, (module), (id), (vpcode) ); \
return 0; \
}
#define HB_CALL_ON_STARTUP_BEGIN( func ) \
static int func( void ) \
{
#define HB_CALL_ON_STARTUP_END( func ) \
return 0; \
}
typedef int (* HB_$INITSYM)( void );
#define HB_DATASEG_FUNC( func ) HB_DATASEG_FUNC_( func )
#define HB_DATASEG_FUNC_( func ) \
static HB_$INITSYM _s_init_func_##func = func;
/* After each '*_END' symbol, additional 'hooks' are required
* See the C output of a generated .prg for example
*/
#elif defined( __WATCOMC__ )
#if defined( HB_PRAGMA_STARTUP )
#error Wrong macros set for startup code - clean your make/env settings.
#endif
#define HB_INIT_SYMBOLS_BEGIN( func ) \
static HB_SYMB symbols_table[] = {
#define HB_INIT_SYMBOLS_EX_END( func, module, id, vpcode ) \
}; \
static PHB_SYMB symbols = symbols_table; \
static void func( void ) \
{ \
symbols = hb_vmProcessSymbols( symbols_table, ( HB_USHORT ) HB_INIT_SYMBOLS_COUNT, (module), (id), (vpcode) ); \
}
#define HB_CALL_ON_STARTUP_BEGIN( func ) \
static void func( void ) \
{
#define HB_CALL_ON_STARTUP_END( func ) \
}
#define HB_DATASEG_STARTUP
#define HB_STARTUP_SEGMENT "XI"
#define HB_WATCOM_STARTUP_ID 0x00
#define HB_WATCOM_STARTUP_PRIORITY 0x40 /* default "program" priority */
#pragma pack( __push, 1 )
struct _s_init_info_
{
unsigned char id;
unsigned char priority;
void ( * func ) ( void );
};
#pragma pack( __pop )
#define HB_DATASEG_FUNC( func ) HB_DATASEG_FUNC_( func )
#define HB_DATASEG_FUNC_( func ) \
static struct _s_init_info_ _s_init_info_##func = \
{ HB_WATCOM_STARTUP_ID, HB_WATCOM_STARTUP_PRIORITY, func };
#else
#error Unknown initialization method.
#endif
HB_EXTERN_END
#endif /* HB_INIT_H_ */
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