4f28289df2
- "Normalized" some Assembly code. - Implemented CFS_APPEND in pfs_open(). - Made CFS_WRITE work in VICE's virtual disk/file system.
47 lines
2 KiB
ArmAsm
47 lines
2 KiB
ArmAsm
;
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; Copyright (c) 2016, Greg King
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; All rights reserved.
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;
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; Redistribution and use in source and binary forms, with or without
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; modification, are permitted provided that the following conditions
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; are met:
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; 1. Redistributions of source code must retain the above copyright
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; notice, this list of conditions, and the following disclaimer.
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; 2. Redistributions in binary form must reproduce the above copyright
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; notice, this list of conditions, and the following disclaimer in the
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; documentation and/or other materials provided with the distribution.
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; 3. Neither the name of the author nor the names of contributors
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; may be used to endorse or promote products derived from this software
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; without specific prior written permission.
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;
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; THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"; AND,
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; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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; ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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; OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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; HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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; LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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; OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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; SUCH DAMAGE.
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;
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; This file is part of the Contiki operating system.
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;
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; Author: Greg King <gregdk@users.sf.net>
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;
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;---------------------------------------------------------------------
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.importzp sp, sreg, ptr1, ptr2, ptr3
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.import popax, incsp6
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.import cmdc, flags
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.export _pfs_seek
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;---------------------------------------------------------------------
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.proc _pfs_seek
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lda #<-1 ; seek not implemented
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tax
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stx sreg ; return long data type
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stx sreg+1
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jmp incsp6 ; drop int and long arguments from stack
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.endproc
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