IFND EXEC_TASKS_I
EXEC_TASKS_I SET 1
**********************************************************************
*
*   Commodore Amiga -- ROM Operating System Executive Include File
*
**********************************************************************
*
*   Source Control:
*
*   $Header: tasks.i,v 1.0 85/08/28 15:14:32 carl Exp $
*
*   $Locker:  $
*
**********************************************************************

    IFND EXEC_NODES_I
    INCLUDE "exec/nodes.i"
    ENDC

    IFND EXEC_LISTS_I
    INCLUDE "exec/lists.i"
    ENDC


*----------------------------------------------------------------
*
*   Task Control Structure
*
*----------------------------------------------------------------

 STRUCTURE  TC,LN_SIZE
    UBYTE   TC_FLAGS
    UBYTE   TC_STATE
    BYTE    TC_IDNESTCNT            * intr disabled nesting
    BYTE    TC_TDNESTCNT            * task disabled nesting
    ULONG   TC_SIGALLOC             * sigs allocated
    ULONG   TC_SIGWAIT              * sigs we are waiting for
    ULONG   TC_SIGRECVD             * sigs we have received
    ULONG   TC_SIGEXCEPT            * sigs we take as exceptions
    UWORD   TC_TRAPALLOC       * traps allocated
    UWORD   TC_TRAPABLE             * traps enabled
    APTR    TC_EXCEPTDATA           * data for except proc
    APTR    TC_EXCEPTCODE           * exception procedure
    APTR    TC_TRAPDATA             * data for proc trap proc
    APTR    TC_TRAPCODE             * proc trap procedure
    APTR    TC_SPREG                * stack pointer
    APTR    TC_SPLOWER              * stack lower bound
    APTR    TC_SPUPPER              * stack upper bound + 2
    APTR    TC_SWITCH               * task losing CPU
    APTR    TC_LAUNCH               * task getting CPU
    STRUCT  TC_MEMENTRY,LH_SIZE     * allocated memory
    APTR    TC_Userdata
    LABEL   TC_SIZE


*------ Flag Bits:

    BITDEF  T,PROCTIME,0
    BITDEF  T,STACKCHK,4
    BITDEF  T,EXCEPT,5
    BITDEF  T,SWITCH,6
    BITDEF  T,LAUNCH,7


*------ Task States:
TS_INVALID  EQU     0
TS_ADDED    EQU     TS_INVALID+1
TS_RUN      EQU     TS_ADDED+1
TS_READY    EQU     TS_RUN+1
TS_WAIT     EQU     TS_READY+1
TS_EXCEPT   EQU     TS_WAIT+1
TS_REMOVED  EQU     TS_EXCEPT+1


*------ System Task Signals:

SIGF_ABORT   EQU   $0001
SIGF_CHILD   EQU   $0002
SIGF_BLIT   EQU   $0010
SIGF_DOS   EQU   $0100

SIGB_ABORT   EQU   0
SIGB_CHILD   EQU   1
SIGB_BLIT   EQU   4
SIGB_DOS   EQU   8


SYS_SIGALLOC   EQU   $0FFFF      ; pre-allocated signals
SYS_TRAPALLOC   EQU   $08000      ; pre-allocated traps

    ENDC