Added Multithreading support to the cc65 targets based on the Contiki 1.x C64 implementation with the following changes:
- Added support for the function parameter. - Removed support for preemption because: - No other current implementation does so. - Preemption support would make the code at least target-dependent or it wouldn't work at all (as on plain Apple2 machines without timer interrupt).
This commit is contained in:
oliverschmidt
parent
f023e03976
commit
8d3496194f
|
|
@ -1,3 +1,4 @@
|
|||
#
|
||||
# Copyright (c) 2007, Adam Dunkels.
|
||||
# All rights reserved.
|
||||
#
|
||||
|
|
@ -29,7 +30,7 @@
|
|||
#
|
||||
# Author: Oliver Schmidt <ol.sc@web.de>
|
||||
#
|
||||
# $Id: Makefile.6502,v 1.6 2007/04/21 15:04:23 oliverschmidt Exp $
|
||||
# $Id: Makefile.6502,v 1.7 2007/04/21 22:15:45 oliverschmidt Exp $
|
||||
#
|
||||
|
||||
ifndef CONTIKI
|
||||
|
|
@ -53,7 +54,7 @@ CONTIKI_CPU_DIRS = . net sys
|
|||
CONTIKI_TARGET_MAIN = ${addprefix $(OBJECTDIR)/,contiki-main.o}
|
||||
|
||||
CONTIKI_TARGET_SOURCEFILES = contiki-main.c
|
||||
CONTIKI_CPU_SOURCEFILES = lc-asm.S uip_arch.c
|
||||
CONTIKI_CPU_SOURCEFILES = mtarch.c mtarch-asm.S lc-asm.S uip_arch.c
|
||||
|
||||
CONTIKI_SOURCEFILES += $(CONTIKI_CPU_SOURCEFILES) $(CONTIKI_TARGET_SOURCEFILES)
|
||||
|
||||
|
|
|
|||
214
cpu/6502/mtarch-asm.S
Normal file
214
cpu/6502/mtarch-asm.S
Normal file
|
|
@ -0,0 +1,214 @@
|
|||
;
|
||||
; Copyright (c) 2004, Adam Dunkels.
|
||||
; 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: Adam Dunkels <adam@sics.se>
|
||||
;
|
||||
; $Id: mtarch-asm.S,v 1.1 2007/04/21 22:15:45 oliverschmidt Exp $
|
||||
;
|
||||
;---------------------------------------------------------------------
|
||||
.importzp ptr1
|
||||
.importzp sp
|
||||
.import __ZP_START__
|
||||
|
||||
.import _mtarch_asm_threadspreg
|
||||
.import _mtarch_asm_threadsp
|
||||
.import _mtarch_asm_threadzp
|
||||
.import _mtarch_asm_threadstack
|
||||
|
||||
.export _mtarch_asm_start
|
||||
.export _mtarch_asm_yield
|
||||
.export _mtarch_asm_exec
|
||||
|
||||
;---------------------------------------------------------------------
|
||||
.bss
|
||||
kernelsp: .res 2
|
||||
kernelspreg: .res 1
|
||||
|
||||
zpsize = 32
|
||||
|
||||
;---------------------------------------------------------------------
|
||||
.code
|
||||
; Switch to thread defined by threadsp, threadstack and threadspreg.
|
||||
; The kernel stack is swapped onto the threadstack, and the
|
||||
; sp and spreg are saved to the local variables "kernelsp" and
|
||||
; "kernelspreg". Also, the zeropage variables are saved.
|
||||
_mtarch_asm_exec:
|
||||
sei
|
||||
; Save current stack pointer
|
||||
lda sp
|
||||
sta kernelsp
|
||||
lda sp+1
|
||||
sta kernelsp+1
|
||||
|
||||
tsx
|
||||
stx kernelspreg
|
||||
|
||||
lda _mtarch_asm_threadzp
|
||||
sta ptr1
|
||||
lda _mtarch_asm_threadzp+1
|
||||
sta ptr1+1
|
||||
|
||||
ldy #0
|
||||
: lda <__ZP_START__,y
|
||||
tax
|
||||
lda (ptr1),y
|
||||
sta <__ZP_START__,y
|
||||
txa
|
||||
sta (ptr1),y
|
||||
iny
|
||||
cpy #zpsize
|
||||
bne :-
|
||||
|
||||
lda _mtarch_asm_threadstack
|
||||
sta ptr1
|
||||
lda _mtarch_asm_threadstack+1
|
||||
sta ptr1+1
|
||||
|
||||
ldy kernelspreg ; Determine the smallest of the two stack pointers,
|
||||
cpy _mtarch_asm_threadspreg ; as we only need to swap the used part of the stack.
|
||||
bcc :+
|
||||
ldy _mtarch_asm_threadspreg
|
||||
|
||||
: lda $0100,y
|
||||
tax
|
||||
lda (ptr1),y
|
||||
sta $0100,y
|
||||
txa
|
||||
sta (ptr1),y
|
||||
iny
|
||||
bne :-
|
||||
|
||||
lda _mtarch_asm_threadsp
|
||||
sta sp
|
||||
lda _mtarch_asm_threadsp+1
|
||||
sta sp+1
|
||||
|
||||
ldx _mtarch_asm_threadspreg
|
||||
txs
|
||||
|
||||
pla
|
||||
tay
|
||||
pla
|
||||
tax
|
||||
pla
|
||||
rti
|
||||
|
||||
;---------------------------------------------------------------------
|
||||
; Switch from thread defined by threadsp, threadstack and threadspreg.
|
||||
; The kernel stack is swapped back from the threadstack, and the
|
||||
; sp and spreg are restored from the local variables "kernelsp" and
|
||||
; "kernelspreg".
|
||||
_mtarch_asm_yield:
|
||||
php
|
||||
pha
|
||||
txa
|
||||
pha
|
||||
tya
|
||||
pha
|
||||
|
||||
sei
|
||||
tsx ; The rts adds 1 to the PC
|
||||
; saved on the stack. We want
|
||||
lda $0105,x ; the stack to look like is would
|
||||
clc ; do inside of an interrupt
|
||||
adc #1 ; (this is what the 'rts' does,
|
||||
sta $0105,x ; but not the 'rti').
|
||||
lda $0106,x
|
||||
adc #0
|
||||
sta $0106,x
|
||||
|
||||
lda sp
|
||||
sta _mtarch_asm_threadsp
|
||||
lda sp+1
|
||||
sta _mtarch_asm_threadsp+1
|
||||
|
||||
tsx
|
||||
stx _mtarch_asm_threadspreg
|
||||
|
||||
lda _mtarch_asm_threadzp
|
||||
sta ptr1
|
||||
lda _mtarch_asm_threadzp+1
|
||||
sta ptr1+1
|
||||
|
||||
ldy kernelspreg ; Determine the smallest of the two stack pointers,
|
||||
cpy _mtarch_asm_threadspreg ; as we only need to swap the used part of the stack.
|
||||
bcc :+
|
||||
ldy _mtarch_asm_threadspreg
|
||||
|
||||
: lda <__ZP_START__,y
|
||||
tax
|
||||
lda (ptr1),y
|
||||
sta <__ZP_START__,y
|
||||
txa
|
||||
sta (ptr1),y
|
||||
iny
|
||||
cpy #zpsize
|
||||
bne :-
|
||||
|
||||
lda _mtarch_asm_threadstack
|
||||
sta ptr1
|
||||
lda _mtarch_asm_threadstack+1
|
||||
sta ptr1+1
|
||||
|
||||
ldy #0
|
||||
: lda $0100,y
|
||||
tax
|
||||
lda (ptr1),y
|
||||
sta $0100,y
|
||||
txa
|
||||
sta (ptr1),y
|
||||
iny
|
||||
bne :-
|
||||
|
||||
lda kernelsp
|
||||
sta sp
|
||||
lda kernelsp+1
|
||||
sta sp+1
|
||||
|
||||
ldx kernelspreg
|
||||
txs
|
||||
|
||||
cli
|
||||
rts
|
||||
;---------------------------------------------------------------------
|
||||
_mtarch_asm_start:
|
||||
lda _mtarch_asm_threadzp
|
||||
sta ptr1
|
||||
lda _mtarch_asm_threadzp+1
|
||||
sta ptr1+1
|
||||
|
||||
ldy #0
|
||||
: lda <__ZP_START__,y
|
||||
sta (ptr1),y
|
||||
iny
|
||||
cpy #zpsize
|
||||
bne :-
|
||||
rts
|
||||
;---------------------------------------------------------------------
|
||||
123
cpu/6502/mtarch.c
Normal file
123
cpu/6502/mtarch.c
Normal file
|
|
@ -0,0 +1,123 @@
|
|||
/*
|
||||
* Copyright (c) 2004, Adam Dunkels.
|
||||
* 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: Adam Dunkels <adam@sics.se>
|
||||
*
|
||||
* $Id: mtarch.c,v 1.1 2007/04/21 22:15:45 oliverschmidt Exp $
|
||||
*/
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include "mtarch.h"
|
||||
|
||||
unsigned char mtarch_asm_threadspreg;
|
||||
unsigned char *mtarch_asm_threadsp;
|
||||
unsigned char *mtarch_asm_threadzp;
|
||||
unsigned char *mtarch_asm_threadstack;
|
||||
|
||||
void mtarch_asm_start(void);
|
||||
void mtarch_asm_yield(void);
|
||||
void mtarch_asm_exec(void);
|
||||
|
||||
/*--------------------------------------------------------------------------*/
|
||||
void
|
||||
mtarch_init(void)
|
||||
{
|
||||
}
|
||||
/*--------------------------------------------------------------------------*/
|
||||
void
|
||||
mtarch_remove(void)
|
||||
{
|
||||
}
|
||||
/*--------------------------------------------------------------------------*/
|
||||
void
|
||||
mtarch_start(struct mtarch_thread *thread,
|
||||
void (* function)(void *data),
|
||||
void *data)
|
||||
{
|
||||
memset(thread->cpustack, 0, sizeof(thread->cpustack));
|
||||
memset(thread->cstack, 0, sizeof(thread->cstack));
|
||||
|
||||
/* Create a CPU stack frame with the appropriate values. */
|
||||
thread->cpustack[MTARCH_CPUSTACKSIZE - 2] = ((unsigned short)function) / 0x100; /* high byte of return address */
|
||||
thread->cpustack[MTARCH_CPUSTACKSIZE - 3] = ((unsigned short)function) % 0x100; /* low byte of return address */
|
||||
thread->cpustack[MTARCH_CPUSTACKSIZE - 4] = 0x21; /* processor flags */
|
||||
thread->cpustack[MTARCH_CPUSTACKSIZE - 5] = /* a register */
|
||||
thread->cpustack[MTARCH_CPUSTACKSIZE - 6] = /* x register */
|
||||
thread->cpustack[MTARCH_CPUSTACKSIZE - 7] = 0x00; /* y register */
|
||||
thread->spreg = MTARCH_CPUSTACKSIZE - 8;
|
||||
|
||||
/* Setup the C stack with the data pointer. */
|
||||
thread->cstack[MTARCH_CPUSTACKSIZE - 2] = ((unsigned short)data) / 0x100; /* high byte of data pointer */
|
||||
thread->cstack[MTARCH_CPUSTACKSIZE - 3] = ((unsigned short)data) % 0x100; /* low byte of data pointer */
|
||||
thread->sp = &thread->cstack[MTARCH_CSTACKSIZE - 3];
|
||||
|
||||
mtarch_asm_threadzp = &(thread->zp);
|
||||
mtarch_asm_start();
|
||||
}
|
||||
/*--------------------------------------------------------------------------*/
|
||||
void
|
||||
mtarch_yield(void)
|
||||
{
|
||||
mtarch_asm_yield();
|
||||
}
|
||||
/*--------------------------------------------------------------------------*/
|
||||
void
|
||||
mtarch_exec(struct mtarch_thread *thread)
|
||||
{
|
||||
/* Switch processor stack. The call to mtarch_asm_switch() will not
|
||||
return until the process that we switch to calls yield(). */
|
||||
mtarch_asm_threadspreg = thread->spreg;
|
||||
mtarch_asm_threadsp = thread->sp;
|
||||
|
||||
mtarch_asm_threadstack = &(thread->cpustack[0]);
|
||||
mtarch_asm_threadzp = &(thread->zp[0]);
|
||||
|
||||
mtarch_asm_exec();
|
||||
|
||||
thread->sp = mtarch_asm_threadsp;
|
||||
thread->spreg = mtarch_asm_threadspreg;
|
||||
}
|
||||
/*--------------------------------------------------------------------------*/
|
||||
void
|
||||
mtarch_stop(struct mtarch_thread *thread)
|
||||
{
|
||||
}
|
||||
/*--------------------------------------------------------------------------*/
|
||||
void
|
||||
mtarch_pstart(void)
|
||||
{
|
||||
}
|
||||
/*--------------------------------------------------------------------------*/
|
||||
void
|
||||
mtarch_pstop(void)
|
||||
{
|
||||
}
|
||||
/*--------------------------------------------------------------------------*/
|
||||
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* Copyright (c) 2007, Swedish Institute of Computer Science.
|
||||
* Copyright (c) 2004, Adam Dunkels.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
|
|
@ -28,14 +28,24 @@
|
|||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* $Id: mtarch.h,v 1.1 2007/04/18 21:38:55 oliverschmidt Exp $
|
||||
* Author: Adam Dunkels <adam@sics.se>
|
||||
*
|
||||
* $Id: mtarch.h,v 1.2 2007/04/21 22:15:45 oliverschmidt Exp $
|
||||
*/
|
||||
|
||||
#ifndef __MTARCH_H__
|
||||
#define __MTARCH_H__
|
||||
|
||||
#define MTARCH_CPUSTACKSIZE 256
|
||||
#define MTARCH_CSTACKSIZE 256
|
||||
#define MTARCH_ZPSIZE 32
|
||||
|
||||
struct mtarch_thread {
|
||||
unsigned char dummy;
|
||||
unsigned char spreg;
|
||||
unsigned char *sp;
|
||||
unsigned char cpustack[MTARCH_CPUSTACKSIZE];
|
||||
unsigned char cstack [MTARCH_CSTACKSIZE];
|
||||
unsigned char zp [MTARCH_ZPSIZE];
|
||||
};
|
||||
|
||||
#endif /* __MTARCH_H__ */
|
||||
|
|
|
|||
Loading…
Reference in a new issue