Introduced very lightweight pfs implementation based on Apple ProDOS.
ProDOS requires for each opened file a user-supplied page-aligned 1024 byte i/o buffer. This makes the generic POSIX file i/o library contained in the cc65 C-library quite heavyweight. In contrast the lightweight pfs implementation uses the uIP packet buffer as ProDOS i/o buffer. Therefore: - Only one file may be open at any time. - That file may not be open while the uIP packet buffer is used by uIP. The open()/read()/close() sequence should be completed before Contiki event scheduling or inside handling a single Contiki event. - The uIP packet buffer must be large enough to hold the ProDOS I/O buffer. Depending on the position of the uIP buffer in memory this means between 1024 and 1024 + 256 bytes. Therefore in an Ethernet environment setting the MTU_SIZE to at least 1266 is safe (So the default of 1500 is just fine).
This commit is contained in:
oliverschmidt
parent
216d20dabb
commit
852d2c0283
4 changed files with 201 additions and 2 deletions
|
|
@ -1,4 +1,4 @@
|
|||
CONTIKI_SOURCEFILES += log-asm.S
|
||||
CONTIKI_SOURCEFILES += log-asm.S pfs.S
|
||||
|
||||
CONTIKI_CPU = $(CONTIKI)/cpu/6502
|
||||
include $(CONTIKI_CPU)/Makefile.6502
|
||||
|
|
|
|||
|
|
@ -30,7 +30,7 @@
|
|||
*
|
||||
* Author: Oliver Schmidt <ol.sc@web.de>
|
||||
*
|
||||
* $Id: contiki-conf.h,v 1.11 2007/12/23 13:57:08 oliverschmidt Exp $
|
||||
* $Id: contiki-conf.h,v 1.12 2008/01/01 18:49:50 oliverschmidt Exp $
|
||||
*/
|
||||
|
||||
#ifndef __CONTIKI_CONF_H__
|
||||
|
|
@ -38,6 +38,8 @@
|
|||
|
||||
#include "6502def.h"
|
||||
|
||||
#include "pfs.h"
|
||||
|
||||
#define LOG_CONF_ENABLED 1
|
||||
|
||||
#define UIP_CONF_LOGGING 0
|
||||
|
|
|
|||
154
platform/apple2enh/lib/pfs.S
Normal file
154
platform/apple2enh/lib/pfs.S
Normal file
|
|
@ -0,0 +1,154 @@
|
|||
;
|
||||
; Copyright (c) 2008, Swedish Institute of Computer Science.
|
||||
; All rights reserved.
|
||||
;
|
||||
; Redistribution and use in source and binary forms, with or without
|
||||
; modification, are permitted provided that the following conditions
|
||||
; are met:
|
||||
; 1. Redistributions of source code must retain the above copyright
|
||||
; notice, this list of conditions and the following disclaimer.
|
||||
; 2. Redistributions in binary form must reproduce the above copyright
|
||||
; notice, this list of conditions and the following disclaimer in the
|
||||
; documentation and/or other materials provided with the distribution.
|
||||
; 3. Neither the name of the Institute nor the names of its contributors
|
||||
; may be used to endorse or promote products derived from this software
|
||||
; without specific prior written permission.
|
||||
;
|
||||
; THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
; ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
; OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
; HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
; LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
; OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
; SUCH DAMAGE.
|
||||
;
|
||||
; This file is part of the Contiki operating system.
|
||||
;
|
||||
; Author: Oliver Schmidt <ol.sc@web.de>
|
||||
;
|
||||
; $Id: pfs.S,v 1.1 2008/01/01 18:49:51 oliverschmidt Exp $
|
||||
;
|
||||
;---------------------------------------------------------------------
|
||||
.constructor init_pfs
|
||||
.destructor done_pfs
|
||||
.importzp ptr1
|
||||
.import popax, _uip_buf
|
||||
.export _pfs_open, _pfs_read, _pfs_close
|
||||
;---------------------------------------------------------------------
|
||||
pathname := $0280
|
||||
mli := $BF00
|
||||
|
||||
OPEN_CALL = $C8
|
||||
READ_CALL = $CA
|
||||
CLOSE_CALL = $CC
|
||||
;---------------------------------------------------------------------
|
||||
.bss
|
||||
|
||||
prefix: .res 1
|
||||
;---------------------------------------------------------------------
|
||||
.data
|
||||
|
||||
open_param: .byte $03 ;PARAM_COUNT
|
||||
.addr pathname ;PATHNAME
|
||||
.byte $00 ;IO_BUFFER (Lo)
|
||||
.byte >_uip_buf+1 ;IO_BUFFER (Hi)
|
||||
open_fd: .byte $00 ;REF_NUM
|
||||
|
||||
read_param: .byte $04 ;PARAM_COUNT
|
||||
read_fd: .byte $00 ;REF_NUM
|
||||
read_buffer: .addr $0000 ;DATA_BUFFER
|
||||
read_count_in: .word $0000 ;REQUEST_COUNT
|
||||
read_count_out: .word $0000 ;TRANS_COUNT
|
||||
|
||||
close_param: .byte $01 ;PARAM_COUNT
|
||||
close_fd: .byte $00 ;REF_NUM
|
||||
;---------------------------------------------------------------------
|
||||
.segment "INIT"
|
||||
|
||||
init_pfs:
|
||||
; Get prefix len of path used to load binary
|
||||
ldx pathname
|
||||
: lda pathname,x
|
||||
cmp #'/'
|
||||
beq :+
|
||||
dex
|
||||
bne :-
|
||||
: stx prefix
|
||||
rts
|
||||
;---------------------------------------------------------------------
|
||||
.code
|
||||
|
||||
_pfs_open:
|
||||
; Pop and store name
|
||||
jsr popax
|
||||
sta ptr1
|
||||
stx ptr1+1
|
||||
|
||||
; Append name to prefix
|
||||
ldy #$00
|
||||
ldx prefix
|
||||
: lda (ptr1),y
|
||||
beq :+
|
||||
sta pathname+1,x
|
||||
iny
|
||||
inx
|
||||
bne :-
|
||||
: stx pathname
|
||||
|
||||
jsr mli
|
||||
.byte OPEN_CALL
|
||||
.addr open_param
|
||||
bcs error
|
||||
|
||||
; Return fd
|
||||
lda open_fd
|
||||
ldx #$00
|
||||
rts
|
||||
|
||||
_pfs_read:
|
||||
; Store len requested
|
||||
sta read_count_in
|
||||
stx read_count_in+1
|
||||
|
||||
; Pop and store buf
|
||||
jsr popax
|
||||
sta read_buffer
|
||||
stx read_buffer+1
|
||||
|
||||
; Pop and store fd
|
||||
jsr popax
|
||||
sta read_fd
|
||||
|
||||
jsr mli
|
||||
.byte READ_CALL
|
||||
.addr read_param
|
||||
bcs error
|
||||
|
||||
; Return len read
|
||||
lda read_count_out
|
||||
ldx read_count_out+1
|
||||
rts
|
||||
|
||||
done_pfs:
|
||||
lda #$00
|
||||
|
||||
_pfs_close:
|
||||
; Store fd
|
||||
sta close_fd
|
||||
|
||||
jsr mli
|
||||
.byte CLOSE_CALL
|
||||
.addr close_param
|
||||
bcs error
|
||||
rts
|
||||
|
||||
error:
|
||||
; Return -1
|
||||
lda #$FF
|
||||
tax
|
||||
rts
|
||||
;---------------------------------------------------------------------
|
||||
43
platform/apple2enh/lib/pfs.h
Normal file
43
platform/apple2enh/lib/pfs.h
Normal file
|
|
@ -0,0 +1,43 @@
|
|||
/*
|
||||
* Copyright (c) 2008, Swedish Institute of Computer Science.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* Author: Oliver Schmidt <ol.sc@web.de>
|
||||
*
|
||||
* $Id: pfs.h,v 1.1 2008/01/01 18:49:51 oliverschmidt Exp $
|
||||
*/
|
||||
|
||||
#ifndef __PFS_H__
|
||||
#define __PFS_H__
|
||||
|
||||
int __fastcall__ pfs_open(const char* name, int flags);
|
||||
void __fastcall__ pfs_close(int fd);
|
||||
int __fastcall__ pfs_read(int fd, void* buf, unsigned int len);
|
||||
|
||||
#endif /* __PFS_H__ */
|
||||
Loading…
Reference in a new issue