/* $Id: shared_defs.h,v 3.8 95/12/16 18:37:08 Martin_Apel Exp $ */ /* IOPacket can either be a DosPacket (if PageDev == PD_FILE) or a * ExtIOReq structure (if PageDev == PD_PART or PD_PSEUDOPART). * It would have better been a union, but H2I doesn't support unions */ #include #include #include #include #define TMP_STACKSIZE 700 struct TrapStruct { struct MinNode TS_Node; struct Task *FaultTask; /* If FaultAddress == NULL, this is used for removing a frame. */ ULONG FaultAddress; union { UWORD *u_TopOfStackFrame; ULONG u_RemFrameSize; } u_struct; UBYTE TmpStack[TMP_STACKSIZE]; struct StackSwapStruct TmpStackSwap; void *IOPacket; void *SeekPacket; /* Only used for * paging to file */ struct FrameDescr *FD; /* contains the address of the page descriptor If this is NULL, * the table for this page is missing */ ULONG *PageDescrAddr; /* contains the address of the table descriptor. */ ULONG *TableDescrAddr; ULONG PhysAddr; UWORD WakeupSignal; UWORD FramesRemoved; ULONG RemFrameFlags; }; #define RemFrameSize u_struct.u_RemFrameSize #define TopOfStackFrame u_struct.u_TopOfStackFrame /* Following are the only constants which should be changed for another * configuration: */ #ifdef PAGE4K #define PAGESIZE 4096 #else #ifdef PAGE8K #define PAGESIZE 8192 #else #define PAGESIZE 4096 /* default */ #endif #endif #ifndef NUM_PTR_TABLES #define NUM_PTR_TABLES 16 /* This gives 512 MB maximum */ #endif #ifndef MAX_FAULTS #define MAX_FAULTS 20 #endif /*************************** Up to here ************************/ #define POINTERS_PER_TABLE 128 #if PAGESIZE==4096 #define PAGESIZESHIFT 12 #define PAGES_PER_TABLE 64 #else #define PAGESIZESHIFT 13 #define PAGES_PER_TABLE 32 #endif #define MAX_TABLES (POINTERS_PER_TABLE*NUM_PTR_TABLES) #define MAX_TABLE_PAGES (PAGES_PER_TABLE*MAX_TABLES/PAGESIZE) /* These are the codes set by VMM when building (parts of) an MMU table */ #define TABLE_RESIDENT 2 #define PAGE_RESIDENT 1 #define INVALID 0 #define WRITEPROTECT 0x04 #define USED 0x08 #define MODIFIED 0x10 /* Bits for page descriptor */ #define CM_MASK 0x60 #define ROOTINDEX(addr) ((addr) >> 25) #define POINTERINDEX(addr) (((addr) >> 18) & 0x7f) #define PAGEINDEX(addr) (((addr) >> PAGESIZESHIFT) & (PAGES_PER_TABLE-1)) #define PAGEADDR(descr) ((descr) & ~(PAGESIZE-1)) #define PAGEOFFS(descr) ((descr) & (PAGESIZE-1)) /* This structure is also used for the 68060. */ struct MMUState40 { ULONG URP, SRP, ITT0, ITT1, DTT0, DTT1; ULONG TC; }; /* This structure is also used for the 68851. The TT registers are * not used in this case. */ struct MMUState30 { ULONG TC, CRP_Hi, CRP_Lo, SRP_Hi, SRP_Lo, TT0, TT1; }; /* Structures for tasks allocating memory */ struct HashEntry { ULONG *Name; struct HashEntry *NextEntry; ULONG MinPublic; ULONG MinNonPublic; UBYTE Referenced; UBYTE HashIndex; UWORD NumLongsM1; }; #define HASHBITS 6 #define HASHTABSIZE (1L << HASHBITS) #define HASH_VAL(x) (((x)&0x1f8)>>3) struct ExtPort { struct MsgPort CxPort; struct Task *PrefsTask; LONG ShowSignal; }; struct CxParams { struct ExtPort *ExtCxPort; CxObj *Broker; CxObj *GUIFilter, *EnableFilter, *DisableFilter; char *PrefsPath; char *ConfigPath; /* name of the initial config file */ BOOL VMEnable; BOOL ForceOverwrite; }; #define APPEAR_ID 0 #define ENABLE_ID 1 #define DISABLE_ID 2 struct VMMsg { struct Message VMMessage; struct Task *VMSender; UWORD VMCommand; /* If the reply signal is zero, it means the receiver should free this * message. */ UWORD ReplySignal; /* The following params are for asking statistics */ union { struct { ULONG st_VMSize; ULONG st_VMFree; ULONG st_Faults; ULONG st_PagesWritten; ULONG st_PagesRead; ULONG st_Frames; ULONG st_PagesUsed; ULONG st_PageSize; ULONG st_TrapStructsFree; } stat_params; struct { struct MemHeader *ip_VMHeader; struct SignalSemaphore *ip_VMSema; /* A pointer to the memlist name */ char *ip_MLName; } init_params; struct { ULONG fp_Address; ULONG fp_Size; } free_params; struct { char *bp_NewWriteBuffer; ULONG bp_NewWriteBufferSize; } buffer_params; struct List *up_TaskList; ULONG lp_PageAddress; struct CxParams *cp_StartupParams; struct VMMConfig *vc_CurrentConfig; } spec_params; }; /* Some shortcuts for the above union definitions */ #define st_VMSize spec_params.stat_params.st_VMSize #define st_VMFree spec_params.stat_params.st_VMFree #define st_Faults spec_params.stat_params.st_Faults #define st_PagesWritten spec_params.stat_params.st_PagesWritten #define st_PagesRead spec_params.stat_params.st_PagesRead #define st_Frames spec_params.stat_params.st_Frames #define st_PagesUsed spec_params.stat_params.st_PagesUsed #define st_PageSize spec_params.stat_params.st_PageSize #define st_TrapStructsFree spec_params.stat_params.st_TrapStructsFree #define VMHeader spec_params.init_params.ip_VMHeader #define VMSema spec_params.init_params.ip_VMSema #define MLName spec_params.init_params.ip_MLName #define FreeAddress spec_params.free_params.fp_Address #define FreeSize spec_params.free_params.fp_Size #define PageAddress spec_params.lp_PageAddress #define StartupParams spec_params.cp_StartupParams #define UsageList spec_params.up_TaskList #define Config spec_params.vc_CurrentConfig #define NewWriteBuffer spec_params.buffer_params.bp_NewWriteBuffer #define NewWriteBufferSize spec_params.buffer_params.bp_NewWriteBufferSize #define VMCMD_FirstCommand 1468 #define VMCMD_AskAllocMem (VMCMD_FirstCommand+0) #define VMCMD_QuitAll (VMCMD_FirstCommand+1) #define VMCMD_InitReady (VMCMD_FirstCommand+2) #define VMCMD_InitFailed (VMCMD_FirstCommand+3) #define VMCMD_AskStat (VMCMD_FirstCommand+4) #define VMCMD_ReqMemHeader (VMCMD_FirstCommand+5) #define VMCMD_FreePages (VMCMD_FirstCommand+6) #define VMCMD_LockPage (VMCMD_FirstCommand+7) #define VMCMD_UnlockAllPages (VMCMD_FirstCommand+8) #define VMCMD_NewConfig (VMCMD_FirstCommand+9) #define VMCMD_Startup (VMCMD_FirstCommand+10) /* Used by the preferences program to work around a bug in the * RAM filesystem. When opening a file it allocates memory in VM * it doesn't free, when the file is closed. */ #define VMCMD_EnableVM (VMCMD_FirstCommand+11) #define VMCMD_DisableVM (VMCMD_FirstCommand+12) #define VMCMD_AskVMUsage (VMCMD_FirstCommand+13) #define VMCMD_AskConfig (VMCMD_FirstCommand+14) #define VMCMD_NewWriteBuffer (VMCMD_FirstCommand+15) #define VMCMD_LastCommand (VMCMD_FirstCommand+15) /******************************************************************* * The following alert will occur, if there are no more TrapStructs* * during either a page-fault or a context-switch. * *******************************************************************/ #define NoTrapStructsAlertNum (AT_DeadEnd|AO_Unknown|AN_Unknown) /* Error levels */ #define ERR_NOERROR 0 /* Simple message */ #define ERR_CONTINUE 1 /* VM can be continued */ #define ERR_FATAL 2 /* Have to reboot */ /* The following structure is used for VM, which is freed during a * forbidden section. It's parameters are put into the structure, the struct * is chained in a list and the prepager is signalled to really free outside * the forbidden section. * In order not to allocate such a small structure each time a FreeMem is * called in the forbidden state, they are put into a recycling chain * after use. */ struct ForbiddenFreeStruct { struct ForbiddenFreeStruct *NextFree; void *address; ULONG size; }; /*** Memory tracking ***/ #define TRACK_MAGIC (('V'<<24)|('M'<<16)|('T'<<8)|'R') /* For use with the MinPublic and MinNonPublic variables */ #define USE_ALWAYS 0L #define USE_NEVER 0xffffffff /* Defines for code paging */ #define CSWAP TRUE #define CNOSWAP FALSE /* Defines for data paging */ #define DP_FALSE 0 #define DP_TRUE 1 #define DP_ADVANCED 2 #define PD_FILE 0 #define PD_PART 1 #define PD_PSEUDOPART 2 #define DYN_MIN 0 #define DYN_MAX 0x40000000 #define CFG_MAGIC 0x342ac93a struct VMMConfig { ULONG CfgMagic; UWORD Version, Revision; ULONG MinMem, MaxMem, WriteBuffer; LONG VMPriority; ULONG MemFlags, FileSize, MinVMAlloc, ZLeftEdge, ZTopEdge, UnZLeftEdge, UnZTopEdge; LONG DefaultMinPublic, DefaultMinNonPublic; ULONG NumTaskEntries; UWORD PageDev; char EnableHotkey [80], DisableHotkey [80], PartOrFileName [80]; /* If it's a partition name it includes * a trailing colon */ BOOL StatEnabled, StatZoomed, MemTracking, PatchWB, CacheZ2RAM, DefaultCodePaging; UWORD DefaultDataPaging; BOOL FastROM; UWORD Reserved [9]; }; struct OldTaskEntryInFile { struct MinNode te_Node; char TaskName [40]; ULONG MinPublic, MinNonPublic; UWORD DataPaging; BOOL CodePaging; BOOL IsDefault; }; struct TaskEntryInFile { ULONG MinPublic, MinNonPublic; UWORD DataPaging; BOOL CodePaging; BOOL IsDefault; UWORD NameLen; /* Including trailing zero */ }; struct LoadingTaskStruct { struct MinNode lt_Node; struct Task *LoadingTask; char *LoadfileName; }; #ifdef DEBUG /* Debugging information is held in the following structure. */ #define DEBUG_SIZE (512L * 1024L) #define DEBUG_MAGIC1 ((ULONG)(('V' << 16) | ('M' << 8) | 'M')) #define DEBUG_MAGIC2 ((ULONG)(('D' << 16) | ('B' << 8) | 'G')) struct DebugBuffer { ULONG Dummy [2]; /* The first two longwords of an AllocAbs cannot be * trusted anyway */ ULONG Magic1; struct DebugBuffer *ThisBuffer; char *NextFree; char DbgInfo [DEBUG_SIZE - 4 * sizeof (ULONG) - sizeof (struct DebugBuffer*) - sizeof (char*) ]; ULONG Magic2; }; #endif #define PAGEHANDLER_NAME "VMM_PageHandler" #define PREPAGER_NAME "VMM_PrePager" #define VM_MANAGER_NAME "VMM_Manager" #define STAT_NAME "VMM_Statistics" #define ERR_NAME "VMM_ErrorHandler" #define WBUF_ALLOC_NAME "VMM_WriteBufAllocator" #define GARBAGE_COLL_NAME "VMM_EmptyPageCollector" #define VMPORTNAME "VMM_Port" #define CXPORTNAME "VMM CX Port" #define STARTER_PORT_STD "VMM_Starter_Std" #define STARTER_PORT_LIB "VMM_Starter_Lib" #define PROGNAME "VMM" #define PROGPATH "L:VMM-Handler" #define LIBNAME "vmm.library" #define MEMLISTNAME "VMM Mem (paged)" #define CFG_FILEBASE "VMM.prefs" #define CFG_FILENAME "ENV:" CFG_FILEBASE #define MMUCFG_FILENAME "ENV:VMM_MMU.config" #define DEFAULT_ENABLE_KEY "ralt rshift y" #define DEFAULT_DISABLE_KEY "ralt rshift n" #define DEFAULT_MINVMSIZE 200L #define AUTHOR "Martin Apel" #define COPYRIGHT "Copyright 1993-95 Martin Apel" #define DESCRIPTION "Virtual memory manager" #define VER_STRING "VMM V3.3" #define EMERGENCY_SIGNAL SIGB_SINGLE