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:
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
|
CONTIKI_CPU = $(CONTIKI)/cpu/6502
|
||||||
include $(CONTIKI_CPU)/Makefile.6502
|
include $(CONTIKI_CPU)/Makefile.6502
|
||||||
|
|
|
@ -30,7 +30,7 @@
|
||||||
*
|
*
|
||||||
* Author: Oliver Schmidt <ol.sc@web.de>
|
* 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__
|
#ifndef __CONTIKI_CONF_H__
|
||||||
|
@ -38,6 +38,8 @@
|
||||||
|
|
||||||
#include "6502def.h"
|
#include "6502def.h"
|
||||||
|
|
||||||
|
#include "pfs.h"
|
||||||
|
|
||||||
#define LOG_CONF_ENABLED 1
|
#define LOG_CONF_ENABLED 1
|
||||||
|
|
||||||
#define UIP_CONF_LOGGING 0
|
#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