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IFND REXX_STORAGE_I
REXX_STORAGE_I SET 1
**
** $Filename: rexx/storage.i $
** $Release: 2.04 Includes, V37.4 $
** $Revision: 1.8 $
** $Date: 91/11/08 $
**
** Include file for REXX data structures and memory/storage management.
**
** (C) Copyright 1986,1987,1988,1989,1990 William S. Hawes.
** (C) Copyright 1990-1999 Amiga, Inc.
** All Rights Reserved
**
IFND EXEC_TYPES_I
INCLUDE "exec/types.i"
ENDC
IFND EXEC_NODES_I
INCLUDE "exec/nodes.i"
ENDC
IFND EXEC_LISTS_I
INCLUDE "exec/lists.i"
ENDC
IFND EXEC_PORTS_I
INCLUDE "exec/ports.i"
ENDC
IFND EXEC_LIBRARIES_I
INCLUDE "exec/libraries.i"
ENDC
* The NexxStr structure is used to maintain the internal strings in REXX.
* It includes the buffer area for the string and associated attributes.
* This is actually a variable-length structure; it is allocated for a
* specific length string, and the length is never modified thereafter
* (since it's used for recycling).
STRUCTURE NexxStr,0
LONG ns_Ivalue ; integer value
UWORD ns_Length ; length in bytes (excl null byte)
UBYTE ns_Flags ; attribute flags
UBYTE ns_Hash ; sum-of-characters hash code
STRUCT ns_Buff,8 ; buffer area for strings
LABEL NSMINSIZE ; 16 bytes (minimum)
NXADDLEN EQU ns_Buff+1 ; structure offset plus null byte
IVALUE EQU ns_Ivalue ; integer value
* String attribute flag bit definitions
NSB_KEEP EQU 0 ; permanent string? (in Symbol Table)
NSB_STRING EQU 1 ; string form valid?
NSB_NOTNUM EQU 2 ; non-numeric?
NSB_NUMBER EQU 3 ; a valid number?
NSB_BINARY EQU 4 ; integer value saved?
NSB_FLOAT EQU 5 ; floating point format?
NSB_EXT EQU 6 ; an external string?
NSB_SOURCE EQU 7 ; part of the program source?
* The flag form of the string attributes
NSF_KEEP EQU 1<<NSB_KEEP
NSF_STRING EQU 1<<NSB_STRING
NSF_NOTNUM EQU 1<<NSB_NOTNUM
NSF_NUMBER EQU 1<<NSB_NUMBER
NSF_BINARY EQU 1<<NSB_BINARY
NSF_FLOAT EQU 1<<NSB_FLOAT
NSF_EXT EQU 1<<NSB_EXT
NSF_SOURCE EQU 1<<NSB_SOURCE
* Combinations of flags
NSF_INTNUM EQU (NSF_NUMBER!NSF_BINARY!NSF_STRING)
NSF_DPNUM EQU (NSF_NUMBER!NSF_FLOAT)
NSF_ALPHA EQU (NSF_NOTNUM!NSF_STRING)
NSF_OWNED EQU (NSF_SOURCE!NSF_EXT!NSF_KEEP)
KEEPSTR EQU (NSF_STRING!NSF_SOURCE!NSF_NOTNUM)
KEEPNUM EQU (NSF_STRING!NSF_SOURCE!NSF_NUMBER!NSF_BINARY)
* The RexxArg structure is identical to the NexxStr structure, but
* is allocated from system memory rather than from internal storage.
* This structure is used for passing arguments to external programs.
* It is usually passed as an "argstring", a pointer to the string buffer.
STRUCTURE RexxArg,0
LONG ra_Size ; total allocated length
UWORD ra_Length ; length of string
UBYTE ra_Flags ; attribute flags
UBYTE ra_Hash ; hash code
STRUCT ra_Buff,8 ; buffer area
LABEL RexxArg_SIZEOF ; size: 16 bytes
; Changed to RexxArg_SIZEOF from ra_SIZEOF
* The RexxMsg structure is used for all communications with Rexx programs.
* It is an EXEC message with a parameter block appended.
STRUCTURE RexxMsg,MN_SIZE
APTR rm_TaskBlock ; pointer to RexxTask structure
APTR rm_LibBase ; library pointer
LONG rm_Action ; command (action) code
LONG rm_Result1 ; return code
LONG rm_Result2 ; secondary result
STRUCT rm_Args,16*4 ; argument block (ARG0-ARG15)
APTR rm_PassPort ; forwarding port
APTR rm_CommAddr ; host address (port name)
APTR rm_FileExt ; file extension
LONG rm_Stdin ; input stream
LONG rm_Stdout ; output stream
LONG rm_avail ; future expansion
LABEL RMSIZEOF ; size: 128 bytes
; Ranamed from rm_SIZEOF
* Field definitions
ACTION EQU rm_Action ; action code
RESULT1 EQU rm_Result1 ; primary return/error level
RESULT2 EQU rm_Result2 ; secondary return/result string
ARG0 EQU rm_Args ; start of argblock
ARG1 EQU rm_Args+4 ; first argument
ARG2 EQU rm_Args+8 ; second argument
MAXRMARG EQU 15 ; maximum arguments
* Command (action) codes for message packets
RXCOMM EQU $01000000 ; a command-level invocation
RXFUNC EQU $02000000 ; a function call
RXCLOSE EQU $03000000 ; close the port
RXQUERY EQU $04000000 ; query for information
RXADDFH EQU $07000000 ; add a function host
RXADDLIB EQU $08000000 ; add a function library
RXREMLIB EQU $09000000 ; remove a function library
RXADDCON EQU $0A000000 ; add/update a ClipList string
RXREMCON EQU $0B000000 ; remove a ClipList string
RXTCOPN EQU $0C000000 ; open the trace console
RXTCCLS EQU $0D000000 ; close the trace console
* Command modifier flag bits
RXFB_NOIO EQU 16 ; suppress I/O inheritance?
RXFB_RESULT EQU 17 ; result string expected?
RXFB_STRING EQU 18 ; program is a "string file"?
RXFB_TOKEN EQU 19 ; tokenize the command line?
RXFB_NONRET EQU 20 ; a "no-return" message?
* Modifier flags
RXFF_RESULT EQU 1<<RXFB_RESULT
RXFF_STRING EQU 1<<RXFB_STRING
RXFF_TOKEN EQU 1<<RXFB_TOKEN
RXFF_NONRET EQU 1<<RXFB_NONRET
RXCODEMASK EQU $FF000000
RXARGMASK EQU $0000000F
* The RexxRsrc structure is used to manage global resources.
* The name string for each node is created as a RexxArg structure,
* and the total size of the node is saved in the "rr_Size" field.
* Functions are provided to allocate and release resource nodes.
* If special deletion operations are required, an offset and base can
* be provided in "rr_Func" and "rr_Base", respectively. This function
* will be called with the base in register A6 and the node in A0.
STRUCTURE RexxRsrc,LN_SIZE
WORD rr_Func ; "auto-delete" offset
APTR rr_Base ; "auto-delete" base
LONG rr_Size ; total size of node
LONG rr_Arg1 ; available ...
LONG rr_Arg2 ; available ...
LABEL RRSIZEOF ; size: 32 bytes
; Changed from rr_SIZEOF to RRSIZEOF
* Field definitions
RRTYPE EQU LN_TYPE ; node type
RRNAME EQU LN_NAME ; node name (argstring)
RRSIZE EQU rr_Size ; total size of node
* Resource node types
RRT_ANY EQU 0 ; any node type ...
RRT_LIB EQU 1 ; a function library
RRT_PORT EQU 2 ; a public port
RRT_FILE EQU 3 ; a file IoBuff
RRT_HOST EQU 4 ; a function host
RRT_CLIP EQU 5 ; a Clip List node
* The RexxTask structure holds the fields used by REXX to communicate with
* external processes, including the client task. It includes the global
* data structure (and the base environment). The structure is passed to
* the newly-created task in its "wake-up" message.
GLOBALSZ EQU 200 ; space for the Global Data structure
STRUCTURE RexxTask,GLOBALSZ ; global data structure
STRUCT rt_MsgPort,MP_SIZE ; message port
UBYTE rt_Flags ; task flag bits
BYTE rt_SigBit ; signal bit
APTR rt_ClientID ; the client's task ID
APTR rt_MsgPkt ; the packet being processed
APTR rt_TaskID ; our task ID
APTR rt_RexxPort ; the REXX public port
APTR rt_ErrTrap ; Error trap address
APTR rt_StackPtr ; stack pointer for traps
STRUCT rt_Header1,LH_SIZE
STRUCT rt_Header2,LH_SIZE
STRUCT rt_Header3,LH_SIZE
STRUCT rt_Header4,LH_SIZE
STRUCT rt_Header5,LH_SIZE
LABEL rt_SIZEOF
ENVLIST EQU rt_Header1 ; environment list (internal)
FREELIST EQU rt_Header2 ; freelist (internal)
MEMLIST EQU rt_Header3 ; allocation list (external)
FILELIST EQU rt_Header4 ; I/O files list (external)
PORTLIST EQU rt_Header5 ; message ports list (external)
NUMLISTS EQU 5
* Definitions for RexxTask flag bits
RTFB_TRACE EQU 0 ; external trace flag
RTFB_HALT EQU 1 ; external halt flag
RTFB_SUSP EQU 2 ; suspend task?
RTFB_TCUSE EQU 3 ; trace console in use?
RTFB_WAIT EQU 6 ; waiting for reply?
RTFB_CLOSE EQU 7 ; task completed?
* Definitions for memory allocation constants
MEMQUANT EQU 16 ; quantum of memory space
MEMMASK EQU $FFFFFFF0 ; mask for rounding the size
MEMQUICK EQU (1<<0) ; EXEC flags: MEMF_PUBLIC
MEMCLEAR EQU (1<<16) ; EXEC flags: MEMF_CLEAR
* The SrcNode is a temporary structure used to hold values destined for a
* segment array. It is also used to maintain the memory freelist.
STRUCTURE SrcNode,0 ; temporary source data structure
APTR sn_Succ
APTR sn_Pred
APTR sn_Ptr ; pointer value
LONG sn_Size ; size of object
LABEL sn_SIZEOF ; size: 16 bytes
ENDC