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#ifndef EXEC_EXECBASE_H
#define EXEC_EXECBASE_H
/*
** $VER: execbase.h 39.6 (18.1.1993)
** Includes Release 44.1
**
** Definition of the exec.library base structure.
**
** (C) Copyright 1985-1999 Amiga, Inc.
** All Rights Reserved
*/
#ifndef EXEC_LISTS_H
#include <exec/lists.h>
#endif /* EXEC_LISTS_H */
#ifndef EXEC_INTERRUPTS_H
#include <exec/interrupts.h>
#endif /* EXEC_INTERRUPTS_H */
#ifndef EXEC_LIBRARIES_H
#include <exec/libraries.h>
#endif /* EXEC_LIBRARIES_H */
#ifndef EXEC_TASKS_H
#include <exec/tasks.h>
#endif /* EXEC_TASKS_H */
/* Definition of the Exec library base structure (pointed to by location 4).
** Most fields are not to be viewed or modified by user programs. Use
** extreme caution.
*/
struct ExecBase {
struct Library LibNode; /* Standard library node */
/******** Static System Variables ********/
UWORD SoftVer; /* kickstart release number (obs.) */
WORD LowMemChkSum; /* checksum of 68000 trap vectors */
ULONG ChkBase; /* system base pointer complement */
APTR ColdCapture; /* coldstart soft capture vector */
APTR CoolCapture; /* coolstart soft capture vector */
APTR WarmCapture; /* warmstart soft capture vector */
APTR SysStkUpper; /* system stack base (upper bound) */
APTR SysStkLower; /* top of system stack (lower bound) */
ULONG MaxLocMem; /* top of chip memory */
APTR DebugEntry; /* global debugger entry point */
APTR DebugData; /* global debugger data segment */
APTR AlertData; /* alert data segment */
APTR MaxExtMem; /* top of extended mem, or null if none */
UWORD ChkSum; /* for all of the above (minus 2) */
/****** Interrupt Related ***************************************/
struct IntVector IntVects[16];
/****** Dynamic System Variables *************************************/
struct Task *ThisTask; /* pointer to current task (readable) */
ULONG IdleCount; /* idle counter */
ULONG DispCount; /* dispatch counter */
UWORD Quantum; /* time slice quantum */
UWORD Elapsed; /* current quantum ticks */
UWORD SysFlags; /* misc internal system flags */
BYTE IDNestCnt; /* interrupt disable nesting count */
BYTE TDNestCnt; /* task disable nesting count */
UWORD AttnFlags; /* special attention flags (readable) */
UWORD AttnResched; /* rescheduling attention */
APTR ResModules; /* resident module array pointer */
APTR TaskTrapCode;
APTR TaskExceptCode;
APTR TaskExitCode;
ULONG TaskSigAlloc;
UWORD TaskTrapAlloc;
/****** System Lists (private!) ********************************/
struct List MemList;
struct List ResourceList;
struct List DeviceList;
struct List IntrList;
struct List LibList;
struct List PortList;
struct List TaskReady;
struct List TaskWait;
struct SoftIntList SoftInts[5];
/****** Other Globals *******************************************/
LONG LastAlert[4];
/* these next two variables are provided to allow
** system developers to have a rough idea of the
** period of two externally controlled signals --
** the time between vertical blank interrupts and the
** external line rate (which is counted by CIA A's
** "time of day" clock). In general these values
** will be 50 or 60, and may or may not track each
** other. These values replace the obsolete AFB_PAL
** and AFB_50HZ flags.
*/
UBYTE VBlankFrequency; /* (readable) */
UBYTE PowerSupplyFrequency; /* (readable) */
struct List SemaphoreList;
/* these next two are to be able to kickstart into user ram.
** KickMemPtr holds a singly linked list of MemLists which
** will be removed from the memory list via AllocAbs. If
** all the AllocAbs's succeeded, then the KickTagPtr will
** be added to the rom tag list.
*/
APTR KickMemPtr; /* ptr to queue of mem lists */
APTR KickTagPtr; /* ptr to rom tag queue */
APTR KickCheckSum; /* checksum for mem and tags */
/****** V36 Exec additions start here **************************************/
UWORD ex_Pad0; /* Private internal use */
ULONG ex_LaunchPoint; /* Private to Launch/Switch */
APTR ex_RamLibPrivate;
/* The next ULONG contains the system "E" clock frequency,
** expressed in Hertz. The E clock is used as a timebase for
** the Amiga's 8520 I/O chips. (E is connected to "02").
** Typical values are 715909 for NTSC, or 709379 for PAL.
*/
ULONG ex_EClockFrequency; /* (readable) */
ULONG ex_CacheControl; /* Private to CacheControl calls */
ULONG ex_TaskID; /* Next available task ID */
ULONG ex_Reserved1[5];
APTR ex_MMULock; /* private */
ULONG ex_Reserved2[3];
/****** V39 Exec additions start here **************************************/
/* The following list and data element are used
* for V39 exec's low memory handler...
*/
struct MinList ex_MemHandlers; /* The handler list */
APTR ex_MemHandler; /* Private! handler pointer */
};
/****** Bit defines for AttnFlags (see above) ******************************/
/* Processors and Co-processors: */
#define AFB_68010 0 /* also set for 68020 */
#define AFB_68020 1 /* also set for 68030 */
#define AFB_68030 2 /* also set for 68040 */
#define AFB_68040 3
#define AFB_68881 4 /* also set for 68882 */
#define AFB_68882 5
#define AFB_FPU40 6 /* Set if 68040 FPU */
/*
* The AFB_FPU40 bit is set when a working 68040 FPU
* is in the system. If this bit is set and both the
* AFB_68881 and AFB_68882 bits are not set, then the 68040
* math emulation code has not been loaded and only 68040
* FPU instructions are available. This bit is valid *ONLY*
* if the AFB_68040 bit is set.
*/
#define AFB_PRIVATE 15 /* Just what it says */
#define AFF_68010 (1L<<0)
#define AFF_68020 (1L<<1)
#define AFF_68030 (1L<<2)
#define AFF_68040 (1L<<3)
#define AFF_68881 (1L<<4)
#define AFF_68882 (1L<<5)
#define AFF_FPU40 (1L<<6)
#define AFF_PRIVATE (1L<<15)
/* #define AFB_RESERVED8 8 */
/* #define AFB_RESERVED9 9 */
/****** Selected flag definitions for Cache manipulation calls **********/
#define CACRF_EnableI (1L<<0) /* Enable instruction cache */
#define CACRF_FreezeI (1L<<1) /* Freeze instruction cache */
#define CACRF_ClearI (1L<<3) /* Clear instruction cache */
#define CACRF_IBE (1L<<4) /* Instruction burst enable */
#define CACRF_EnableD (1L<<8) /* 68030 Enable data cache */
#define CACRF_FreezeD (1L<<9) /* 68030 Freeze data cache */
#define CACRF_ClearD (1L<<11) /* 68030 Clear data cache */
#define CACRF_DBE (1L<<12) /* 68030 Data burst enable */
#define CACRF_WriteAllocate (1L<<13) /* 68030 Write-Allocate mode
(must always be set!) */
#define CACRF_EnableE (1L<<30) /* Master enable for external caches */
/* External caches should track the */
/* state of the internal caches */
/* such that they do not cache anything */
/* that the internal cache turned off */
/* for. */
#define CACRF_CopyBack (1L<<31) /* Master enable for copyback caches */
#define DMA_Continue (1L<<1) /* Continuation flag for CachePreDMA */
#define DMA_NoModify (1L<<2) /* Set if DMA does not update memory */
#define DMA_ReadFromRAM (1L<<3) /* Set if DMA goes *FROM* RAM to device */
#endif /* EXEC_EXECBASE_H */