;************************************************************************* ;** 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 MMUConfig ;************************************************* ;** MMUConfig ** ;** this keeps all MMU registers ** ;************************************************* rsreset mcf_userrootpointer: rs.l 2 ;depends on MMU whether 32 or 64 bit mcf_superrootpointer: rs.l 2 ;ditto mcf_translationctrl: rs.l 1 ;translation control register mcf_dtt0: rs.l 1 ;transparent data translation 0 mcf_dtt1: rs.l 1 ;transparent data translation 1 mcf_itt0: rs.l 1 ;transparent instruction translation 0 mcf_itt1: rs.l 1 ;transparent instruction translation 1 mcf_len: rs.b 0 ;ENDFOLD ;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_AttnFlags: rs.b 1 ;copy of ExecBase->AttnFlags mulib_Flags1: rs.l 1 ;private flags, see below mulib_Segment: rs.l 1 ;Library segment for unloading ;Processor specific data follows here ;Masks containing the valid bits of ;the MMU table pointers ;the root mask applies to the root level, i.e. ;to the bits in the hardware MMU register mulib_LevelAMask: rs.l 1 ;alignment of the LevelA pointer table pointed to by the MMU URP mulib_LevelBMask: rs.l 1 mulib_LevelCMask: rs.l 1 mulib_LevelDMask: rs.l 1 mulib_IndirectMask: rs.l 1 ;Alignment for indirect mulib_PageMask: rs.l 1 ;Alignment at page level ;the mask +1 is called alignment ;it is therefore the alignment of ;the object ONE LEVEL BELOW ;since at the level above only the ;bits mentioned in the mask are ;used. mulib_LevelAAlign: rs.l 1 ;alignment of the LevelA pointer table pointed to by the MMU URP mulib_LevelBAlign: rs.l 1 mulib_LevelCAlign: rs.l 1 mulib_LevelDAlign: rs.l 1 mulib_IndirectAlign: rs.l 1 ;Alignment for indirect: Unused (must be four anyways) mulib_PageSize: rs.l 0 ;Page size choosen. Should be 4K mulib_PageAlign: rs.l 1 ;Alignment at page level: This is identical to the page size 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_UpperEnd: rs.l 1 ;Total upper end of the address space (0 for 2^32) mulib_MMUConfig: rs.b mcf_len ;the initial MMU configuration ;vectors to other libraries mulib_SysBase: rs.l 1 ;ExecBase. Important! mulib_UtilityBase: rs.l 1 ;utility.library mulib_ExpansionBase: rs.l 1 ;expansion.library mulib_040Base: rs.l 1 ;68040.library mulib_060Base: rs.l 1 ;68060.library ;system lists mulib_ContextList: rs.l 3 ;minlist of known contexts. mulib_ContextPool: rs.l 1 ;memory pool ;no, this is NOT exec compatible. mulib_ContextSemaphore: rs.b $2e ;access for the List mulib_PoolSemaphore: rs.b $2e ;access for the Pool ;other important pointers mulib_CurrentContext: rs.l 1 ;currently active context mulib_DefaultContext: rs.l 1 ;context for standard applications, NULL context ;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_InternalVecs = 7 ;four vectors have to be initialized mulib_Internals: rs.w 0 mulib_ReadConfig: rs.w 3 ;Read MMU Configuration data mulib_WriteConfig: rs.w 3 ;Write back MMU configuration mulib_SetLibrary: rs.w 3 ;set the variables of the library base from the config mulib_ParseMMU: rs.w 3 ;build a context from the MMU table mulib_ParseTT: rs.w 3 ;add the transparent translation registers mulib_EnterContext: rs.w 3 ;Set the MMU root pointer mulib_GetMMUData: rs.w 3 ;Fill in processor specific data 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 ;FOLD CPU types ;I'm again too lazy to include the complete exec/execbase.i. ;Here just what I need: AF_68010 = 0 AF_68020 = 1 AF_68030 = 2 AF_68040 = 3 AF_68060 = 7 ;ENDFOLD