;************************************************************************* ;** mmu.library ** ;** ** ;** a system library for arbitration and control of the MC68K MMUs ** ;** ** ;** © 1998 THOR-Software, Thomas Richter ** ;** No commercial use, reassembly, modification without prior, written ** ;** permission of the authors. ** ;** Including this library in any commercial software REQUIRES a ** ;** written permission and the payment of a small fee. ** ;** ** ;** This is an internal header file, do not depend on anything here. ** ;** Use the official include files. ** ;** Distributed only for the mmu.library development group for private ** ;** use. ** ;** ** ;**---------------------------------------------------------------------** ;** Block: The library base ** ;** Definition of the library base ** ;************************************************************************* ;FOLD Library base ;************************************************* ;** Library base ** ;** this is the MMU library base ** ;************************************************* rsreset ;first the node structure mulib_succ: rs.l 1 ;pointer to next library mulib_pred: rs.l 1 ;to previous mulib_type: rs.b 1 ;NT_LIBRARY mulib_pri: rs.b 1 ;priority, left blank mulib_name: rs.l 1 ;name of the game ;the exec library header mulib_flags: rs.b 1 ;exec library flags mulib_pad: rs.b 1 mulib_negsize: rs.w 1 ;jump vectors mulib_possize: rs.w 1 ;positive size, i.e. size of this structure mulib_version: rs.w 1 mulib_revision: rs.w 1 mulib_idstring: rs.l 1 ;ASCII vendor identification mulib_sum: rs.l 1 ;checksum mulib_opencnt: rs.w 1 ;open count ;private mmu library header follows here mulib_MMUType: rs.b 1 ;type of mmu detected, see below mulib_cludgefill0: rs.b 1 mulib_Flags1: rs.l 1 ;private flags, see below mulib_Segment: rs.l 1 ;Library segment for unloading ;vectors to other libraries mulib_SysBase: rs.l 1 ;ExecBase. Important! mulib_UtilityBase: rs.l 1 ;utility.library ;system lists mulib_ContextList: rs.l 3 ;minlist of known contexts. ;other important pointers mulib_CurrentContext: rs.l 1 ;currently active context mulib_DefaultContext: rs.l 1 ;context for standard applications, NULL context ;Processor specific data follows here mulib_TableAlign: rs.l 1 ;Alignment required for the MMU tables mulib_PageSize: rs.l 1 ;Page size choosen. Should be 4K mulib_InitialShift: rs.b 1 ;Initial shift bits, only used for MC68851/MC68030 mulib_LevelABits: rs.b 1 ;Bits for the Root Index level of the tree mulib_LevelBBits: rs.b 1 ;Bits for the Pointer Index level of the tree mulib_LevelCBits: rs.b 1 ;Bits for the Page Index level of the tree mulib_LevelDBits: rs.b 1 ;Bits for the Level D pointer, used only in MC68851/68030 mulib_PageBits: rs.b 1 ;Bits for the Page Offset level of the tree mulib_reserved1: rs.b 2 mulib_SuperTree: rs.l 2 ;Supervisor Root Pointer, if any ;at this point, we start with ;the internal jump vectors for ;processor specific routines. ;These are filled in at startup ;This is CODE, and the CPU jumps ;directly in here. mulib_CopyVBR: rs.w 3 ;Copy the vector base to the address ;below and set VBR mulib_EnterContext: rs.w 3 ;Set the MMU root pointer mulib_GetMMUData: rs.w 3 ;Fill in processor specific data mulib_reserved2: rs.w 3 ;the vector base starts here mulib_VectorBase: rs.b $100 ;to be filled in mulib_len: rs.b 0 ;ENDFOLD ;FOLD Standard library flags definitions we care about lib_changed = 1 lib_sumused = 2 lib_delexp = 3 ;marked for expunge lib_exp0cnt = 4 ;special system expunge flag ;ENDFOLD ;FOLD Standard node types we care about NT_UNKNOWN EQU 0 NT_TASK EQU 1 ; Exec task NT_INTERRUPT EQU 2 NT_DEVICE EQU 3 NT_MSGPORT EQU 4 NT_MESSAGE EQU 5 ; Indicates message currently pending NT_FREEMSG EQU 6 NT_REPLYMSG EQU 7 ; Message has been replied NT_RESOURCE EQU 8 NT_LIBRARY EQU 9 NT_MEMORY EQU 10 NT_SOFTINT EQU 11 ; Internal flag used by SoftInts NT_PROCESS EQU 13 ; AmigaDOS Process NT_SIGNALSEM EQU 15 ; signal semaphores NT_CONTEXT EQU 32 ;A context node, private. ;ENDFOLD ;FOLD MMU types known mutype_none = 0 ;no mmu detected mutype_68851 = '2' ;68020 mmu mutype_68030 = '3' ;68030 mmu mutype_68040 = '4' ;68040 mmu mutype=68060 = '6' ;68060 mmu ;ENDFOLD ;FOLD Private flags in the library base mmuf1_contextopen = 0 ;a context is in use ;ENDFOLD