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- /*
- ** $VER: LibInit.c 1.00 (9.8.1999)
- **
- ** Library initializers and functions to be called by StartUp.c
- **
- ** (C) Copyright 1999 Felix Schwarz
- ** All Rights Reserved.
- */
-
- #define __USE_SYSBASE // perhaps only recognized by SAS/C
-
- #include <exec/types.h>
- #include <exec/memory.h>
- #include <exec/libraries.h>
- #include <exec/execbase.h>
- #include <exec/resident.h>
- #include <exec/initializers.h>
-
- #include <proto/exec.h>
-
- #include "compiler.h"
- #include "base.h"
-
- ULONG __saveds __stdargs L_OpenLibs(void);
- void __saveds __stdargs L_CloseLibs(void);
-
- extern struct ExampleBase *ExampleBase;
-
- struct ExecBase *SysBase = NULL;
- struct IntuitionBase *IntuitionBase = NULL;
- struct GfxBase *GfxBase = NULL;
- struct GadToolsBase *GadToolsBase = NULL;
- struct DOSLibrary *DOSBase = NULL;
-
- #define VERSION 1
- #define REVISION 00
-
- char __aligned ExLibName [] = "example.plugin";
- char __aligned ExLibID [] = "example 1.00 "__AMIGADATE__"";
- char __aligned Copyright [] = "(C)opyright 1999 by Felix Schwarz. All rights reserved.";
-
- extern ULONG InitTab[];
- extern APTR EndResident;
-
- struct Resident __aligned ROMTag =
- {
- RTC_MATCHWORD,
- &ROMTag,
- &EndResident,
- RTF_AUTOINIT,
- VERSION,
- NT_LIBRARY,
- 0,
- &ExLibName[0],
- &ExLibID[0],
- &InitTab[0]
- };
-
- APTR EndResident;
-
- struct MyDataInit
- {
- UWORD ln_Type_Init; UWORD ln_Type_Offset; UWORD ln_Type_Content;
- UBYTE ln_Name_Init; UBYTE ln_Name_Offset; ULONG ln_Name_Content;
- UWORD lib_Flags_Init; UWORD lib_Flags_Offset; UWORD lib_Flags_Content;
- UWORD lib_Version_Init; UWORD lib_Version_Offset; UWORD lib_Version_Content;
- UWORD lib_Revision_Init; UWORD lib_Revision_Offset; UWORD lib_Revision_Content;
- UBYTE lib_IdString_Init; UBYTE lib_IdString_Offset; ULONG lib_IdString_Content;
- ULONG ENDMARK;
- } DataTab =
- #ifdef VBCC
- {
- 0xe000,8,NT_LIBRARY,
- 0x0080,10,(ULONG) &ExLibName[0],
- 0xe000,LIBF_SUMUSED|LIBF_CHANGED,
- 0xd000,20,VERSION,
- 0xd000,22,REVISION,
- 0x80,24,(ULONG) &ExLibID[0],
- (ULONG) 0
- };
- #else
- {
- INITBYTE(OFFSET(Node, ln_Type), NT_LIBRARY),
- 0x80, (UBYTE) OFFSET(Node, ln_Name), (ULONG) &ExLibName[0],
- INITBYTE(OFFSET(Library, lib_Flags), LIBF_SUMUSED|LIBF_CHANGED),
- INITWORD(OFFSET(Library, lib_Version), VERSION),
- INITWORD(OFFSET(Library, lib_Revision), REVISION),
- 0x80, (UBYTE) OFFSET(Library, lib_IdString), (ULONG) &ExLibID[0],
- (ULONG) 0
- };
- #endif
-
- /* ----------------------------------------------------------------------------------------
- ! L_OpenLibs:
- !
- ! Since this one is called by InitLib, libraries not shareable between Processes or
- ! libraries messing with RamLib (deadlock and crash) may not be opened here.
- !
- ! You may bypass this by calling this function fromout LibOpen, but then you will
- ! have to a) protect it by a semaphore and b) make sure, that libraries are only
- ! opened once (when using globa library bases).
- ---------------------------------------------------------------------------------------- */
-
- ULONG __saveds __stdargs L_OpenLibs(void)
- {
- SysBase = (*((struct ExecBase **) 4));
-
- IntuitionBase = (struct IntuitionBase *) OpenLibrary("intuition.library", 37);
- if(!IntuitionBase) return(FALSE);
-
- GfxBase = (struct GfxBase *) OpenLibrary("graphics.library", 37);
- if(!GfxBase) return(FALSE);
-
- GadToolsBase = (struct GadToolsBase *) OpenLibrary("gadtools.library", 36);
- if(!GadToolsBase) return(FALSE);
-
- DOSBase = (struct DOSBase *) OpenLibrary("dos.library", 0L);
- if(!DOSBase) return(FALSE);
-
- ExampleBase->exb_SysBase = SysBase;
- ExampleBase->exb_IntuitionBase = IntuitionBase;
- ExampleBase->exb_GfxBase = GfxBase;
- ExampleBase->exb_GadToolsBase = GadToolsBase;
- ExampleBase->exb_DOSBase = DOSBase;
-
- return(TRUE);
- }
-
- /* ----------------------------------------------------------------------------------------
- ! L_CloseLibs:
- !
- ! This one by default is called by ExpungeLib, which only can take place once
- ! and thus per definition is single-threaded.
- !
- ! When calling this fromout LibClose instead, you will have to protect it by a
- ! semaphore, since you don't know whether a given CloseLibrary(foobase) may cause a Wait().
- ! Additionally, there should be protection, that a library won't be closed twice.
- ---------------------------------------------------------------------------------------- */
-
- void __saveds __stdargs L_CloseLibs(void)
- {
- if (GfxBase)
- {
- CloseLibrary((struct Library *) GfxBase);
- }
-
- if (IntuitionBase)
- {
- CloseLibrary((struct Library *) IntuitionBase);
- }
-
- if (GadToolsBase)
- {
- CloseLibrary((struct Library *) GadToolsBase);
- }
-
- if (DOSBase)
- {
- CloseLibrary((struct Library *) DOSBase);
- }
- }
-