;Assembler header file for Squash
;written by DefMod (Dec 31 2005) on Sat Dec 31 14:03:54 2005
;Jonathan Coxhead, jonathan@doves.demon.co.uk, 29 Jun 1995

        [       :LNOT: :DEF: Squash_Hdr
        GBLS    Squash_Hdr

        [       :LNOT: :DEF: Get_Types
        GBLS    Get_Types
        ]
        [       :LNOT: :DEF: Types_Hdr
Get_Types                       SETS    "GET oslib/Types.Hdr"
        |
Get_Types                       SETS    ""
        ]
        $Get_Types

        [       :LNOT: :DEF: Get_OS
        GBLS    Get_OS
        ]
        [       :LNOT: :DEF: OS_Hdr
Get_OS                          SETS    "GET oslib/OS.Hdr"
        |
Get_OS                          SETS    ""
        ]
        $Get_OS

;Symbols for constants
Error_SquashBadAddress          *       &921
Error_SquashBadInput            *       &922
Error_SquashBadWorkspace        *       &923
Error_SquashBadParameters       *       &924
Squash_FileType                 *       &FCA
Squash_InputNotStart            *       &1
Squash_InputNotEnd              *       &2
Squash_InputAllPresent          *       &4
Squash_OutputEnd                *       &1
Squash_OutputMore               *       &2
Squash_OutputNoMem              *       &4

;Symbols for structure offsets and sizes
                                ^       0
                                #       Bits
Squash_InputStatus              *       @

                                ^       0
                                #       Bits
Squash_OutputStatus             *       @

                                ^       0
Squash_File_id                  #       Bits
Squash_File_size                #       Int
Squash_File_load_addr           #       Bits
Squash_File_exec_addr           #       Bits
Squash_File_reserved            #       Int
Squash_File_data                #       Byte
Squash_File                     *       @
        
        MACRO
$label                          Squash_File_MEMBERS
$label._id                      #       Bits
$label._size                    #       Int
$label._load_addr               #       Bits
$label._exec_addr               #       Bits
$label._reserved                #       Int
        MEND
        
                                ^       0
Squash_FileBase                 Squash_File_MEMBERS
Squash_FileBase                 *       @


;Symbols for SWI's and SWI reason codes
XSquash_CompressReturnSizes     *       &62700
Squash_CompressReturnSizes      *       &42700
   ;Entry
   ;  R0 = &8
   ;  R1 = input_size (Int)
   ;Exit
   ;  R0 = workspace_size (Int)
   ;  R1 = output_size (Int)

XSquash_Compress                *       &62700
Squash_Compress                 *       &42700
   ;Entry
   ;  R0 = input_status (Squash_InputStatus)
   ;  R1 = workspace (pointer to Void)
   ;  R2 -> input (data)
   ;  R3 = input_size (Int)
   ;  R4 = output (pointer to data)
   ;  R5 = output_size (Int)
   ;Exit
   ;  R0 = output_status (Squash_OutputStatus)
   ;  R2 -> input_out (data)
   ;  R3 = input_spare (Int)
   ;  R4 -> output_out (data)
   ;  R5 = output_spare (Int)

XSquash_DecompressReturnSizes   *       &62701
Squash_DecompressReturnSizes    *       &42701
   ;Entry
   ;  R0 = &8
   ;  R1 = input_size (Int)
   ;Exit
   ;  R0 = workspace_size (Int)
   ;  R1 = output_size (Int)

XSquash_Decompress              *       &62701
Squash_Decompress               *       &42701
   ;Entry
   ;  R0 = input_status (Squash_InputStatus)
   ;  R1 = workspace (pointer to Void)
   ;  R2 -> input (data)
   ;  R3 = input_size (Int)
   ;  R4 = output (pointer to data)
   ;  R5 = output_size (Int)
   ;Exit
   ;  R0 = output_status (Squash_OutputStatus)
   ;  R2 -> input_out (data)
   ;  R3 = input_spare (Int)
   ;  R4 -> output_out (data)
   ;  R5 = output_spare (Int)

        ]
        END
