@ GNU AS assembler header file for CDFS
@ Written by DefMod (Dec  9 2012) on Sun Dec  9 15:44:51 2012
@ Jonathan Coxhead, jonathan@doves.demon.co.uk, 22 June 1995

@ OSLib---efficient, type-safe, transparent, extensible,
@ register-safe API coverage of RISC OS
@ 
@ Copyright (c) 1994-2012 Jonathan Coxhead and OSLib maintainers
@ 
@ Licence:
@ 
@    OSLib is free software; you can redistribute it and/or modify
@ it under the terms of the GNU General Public License as published by
@ the Free Software Foundation; either version 1, or (at your option)
@ any later version - and this with the following clarification and
@ special exception:
@ 
@    Linking this library statically or dynamically with other modules
@ is making a combined work based on this library. Thus, the terms
@ and conditions of the GNU General Public License cover the whole
@ combination.
@ 
@    As a special exception, the copyright holders of this library
@ give you permission to link this library with independent modules
@ to produce an executable, regardless of the license terms of these
@ independent modules, and to copy and distribute the resulting
@ executable under terms of your choice, provided that you also meet,
@ for each linked independent module, the terms and conditions of the
@ license of that module. An independent module is a module which is
@ not derived from or based on this library. If you modify this
@ library, you may extend this exception to your version of the library,
@ but you are not obliged to do so. If you do not wish to do so, delete
@ this exception statement from your version.
@ 
@    OSLib is distributed in the hope that it will be useful,
@ but WITHOUT ANY WARRANTY; without even the implied warranty of
@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
@ GNU General Public License for more details.
@ 
@    You should have received a copy of the GNU General Public License
@ along with this programme; if not, write to the Free Software
@ Foundation, Inc, 675 Mass Ave, Cambridge, MA 02139, USA.

#ifndef CDFS_Hdr
#  define CDFS_Hdr

#  ifndef Get_Types
#    define Get_Types
#    include "oslib/Types.Hdr"
#  endif

#  ifndef Get_OS
#    define Get_OS
#    include "oslib/OS.Hdr"
#  endif

#  ifndef Get_FileCore
#    define Get_FileCore
#    include "oslib/FileCore.Hdr"
#  endif

@Symbols for constants
#  define CDFS_TruncationFromRight 0x0
#  define CDFS_TruncationFromLeft 0x1
#  define CDFS_TruncationNone 0x2
#  define CDFS_TruncationDefault 0xffffffff

@Symbols for structure offsets and sizes
        .struct 0
        .skip   Int
CDFS_TruncationType            : 


@Symbols for SWI's and SWI reason codes
.set XCDFS_ConvertDriveToDevice,0x61e80
.set CDFS_ConvertDriveToDevice,0x41e80
   @Entry
   @  R0 = log_no (Int)
   @Exit
   @  R1 = phys_no (Int)

.set XCDFS_SetBufferSize,0x61e81
.set CDFS_SetBufferSize,0x41e81
   @Entry
   @  R0 = buffer_size_exp (Int)

.set XCDFS_GetBufferSize,0x61e82
.set CDFS_GetBufferSize,0x41e82
   @Exit
   @  R0 = buffer_size_exp (Int)

.set XCDFS_SetNumberOfDrives,0x61e83
.set CDFS_SetNumberOfDrives,0x41e83
   @Entry
   @  R0 = drive_count (Int)

.set XCDFS_GetNumberOfDrives,0x61e84
.set CDFS_GetNumberOfDrives,0x41e84
   @Exit
   @  R0 = drive_count (Int)

.set XCDFS_GiveFileType,0x61e85
.set CDFS_GiveFileType,0x41e85
   @Entry
   @  R0 -> file_name (String)
   @Exit
   @  R1 = file_type (Bits)

.set XCDFS_DescribeDisc,0x61e86
.set CDFS_DescribeDisc,0x41e86
   @Entry
   @  R0 = log_no (Int)
   @  R1 = disc (pointer to FileCore_Disc)

.set XCDFS_WhereIsFile,0x61e87
.set CDFS_WhereIsFile,0x41e87
   @Entry
   @  R0 -> file_name (String)
   @Exit
   @  R1 = block_no (Int)
   @  R2 = size (Int)

.set XCDFS_Truncation,0x61e88
.set CDFS_Truncation,0x41e88

#  define CDFSTruncation_Read 0x0
   @Entry
   @  R0 = &0
   @Exit
   @  R1 = type (CDFS_TruncationType)

#  define CDFSTruncation_Write 0x1
   @Entry
   @  R0 = &1
   @  R1 = type (CDFS_TruncationType)

#endif
