rom/exec/exec_intern.h

   1 /*
   2     Copyright © 1995-2017, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Private data belonging to exec.library
   6     Lang:
   7 */
   8 #ifndef __EXEC_INTERN_H__
   9 #define __EXEC_INTERN_H__
  10
  11 /* This is a short file that contains a few things every Exec function needs */
  12
  13 #include <aros/debug.h> /* Needed for aros_print_not_implemented macro */
  14 #include <aros/system.h>
  15 #include <aros/libcall.h>
  16 #include <exec/execbase.h>
  17 #include <proto/exec.h>
  18
  19 #include <exec_platform.h>
  20
  21 #if defined(__AROSEXEC_SMP__)
  22 #include <aros/types/spinlock_s.h>
  23 #endif
  24
  25 #define __KERNEL_NOLIBBASE__
  26 #include <proto/kernel.h>
  27
  28 #define ALERT_BUFFER_SIZE 2048
  29
  30 /*
  31    Internals of this structure are host-specific, we don't know them here
  32  */
  33 struct HostInterface;
  34
  35 struct SupervisorAlertTask
  36 {
  37     struct Task                 *sat_Task;                      /* Task that tries to display supervisor-level alerts           */
  38     BOOL                        sat_IsAvailable;
  39     IPTR                        sat_Params[2];
  40 };
  41
  42 /*
  43    AROS specific private portion of ExecBase
  44  */
  45 struct IntExecBase
  46 {
  47     struct ExecBase             pub;
  48     struct List                 ResetHandlers;                  /* Reset handlers list                                          */
  49     struct Interrupt            ColdResetHandler;               /* Reset handler that causes cold reboot                        */
  50     struct Interrupt            WarmResetHandler;               /* Reset handler that causes warm reboot                        */
  51     struct Interrupt            ShutdownHandler;                /* Reset handler that halts CPU                                 */
  52     struct MinList              AllocMemList;                   /* Mungwall allocations list                                    */
  53     struct SignalSemaphore      LowMemSem;                      /* Lock for single-threading low memory handlers                */
  54     APTR                        KernelBase;                     /* kernel.resource base                                         */
  55     struct Library              *DebugBase;                     /* debug.library base                                           */
  56     ULONG                       PageSize;                       /* Memory page size                                             */
  57     ULONG                       IntFlags;                       /* Internal flags, see below                                    */
  58     struct MsgPort              *ServicePort;                   /* Message port for service task                                */
  59     struct MinList              TaskStorageSlots;               /* List of free slots, always one element with next slot        */
  60     struct List                 AllocatorCtxList;               /* List of allocator contexts for system mem headers            */
  61     struct Exec_PlatformData    PlatformData;                   /* Platform-specific stuff                                      */
  62     struct SupervisorAlertTask  SAT;
  63     char                        AlertBuffer[ALERT_BUFFER_SIZE]; /* Buffer for alert text                                        */
  64 #if defined(__AROSEXEC_BROKENMEMLOCK__)
  65     struct SignalSemaphore      MemListSem;                     /* Memory list protection semaphore                             */
  66 #elif defined(__AROSEXEC_SMP__)
  67     spinlock_t                  MemListSpinLock;
  68     /* First the locks for arbitration of public resources ... */
  69     spinlock_t                  ResourceListSpinLock;
  70     spinlock_t                  DeviceListSpinLock;
  71     spinlock_t                  IntrListSpinLock;
  72     spinlock_t                  LibListSpinLock;
  73     spinlock_t                  PortListSpinLock;
  74     spinlock_t                  SemListSpinLock;
  75
  76     /* .. and then scheduling related locks ... */
  77     spinlock_t                  TaskRunningSpinLock;
  78     struct List                 TaskRunning;                    /* Tasks that are currently running on available CPUs           */
  79     spinlock_t                  TaskSpinningLock;
  80     struct List                 TaskSpinning;                   /* Tasks that are spinning waiting for a lock                   */
  81     spinlock_t                  TaskReadySpinLock;
  82     spinlock_t                  TaskWaitSpinLock;
  83 #endif
  84 };
  85
  86 #define PrivExecBase(base)      ((struct IntExecBase *)(base))
  87 #define PD(base)                PrivExecBase(base)->PlatformData
  88 #ifndef __AROS_KERNEL__
  89 #define KernelBase              PrivExecBase(SysBase)->KernelBase
  90 #else
  91 #define __kernelBase              PrivExecBase(SysBase)->KernelBase
  92 #endif
  93 #define DebugBase               PrivExecBase(SysBase)->DebugBase
  94
  95 /* IntFlags */
  96 #define EXECF_MungWall          0x0001                          /* This flag can't be changed at runtime                        */
  97 #define EXECF_StackSnoop        0x0002
  98
  99 /* Additional private task states */
 100 #define TS_SERVICE              128
 101
 102 /* Puddle size, in slots. Must be at least 1 */
 103 #define TASKSTORAGEPUDDLE       16
 104
 105 #if UseLVOs
 106 extern void __AROS_InitExecBase (void);
 107 #endif
 108
 109 struct ExecBase *PrepareExecBase(struct MemHeader *mh, struct TagItem *tags);
 110 void InitExecBase(struct ExecBase *SysBase, ULONG negsize, struct TagItem *msg);
 111 struct ExecBase *PrepareExecBaseMove(struct ExecBase *oldSysBase);
 112 BOOL Exec_PreparePlatform(struct Exec_PlatformData *pdata, struct TagItem *tags);
 113
 114 void InitKickTags(struct ExecBase *SysBase);
 115 UWORD GetSysBaseChkSum(struct ExecBase *sysbase);
 116 void SetSysBaseChkSum(void);
 117 BOOL IsSysBaseValid(struct ExecBase *sysbase);
 118
 119 IPTR cpu_SuperState();
 120
 121 void ServiceTask(struct ExecBase *SysBase);
 122
 123 #endif /* __EXEC_INTERN_H__ */