9d4fc0a1a8
In order to support, some core modules are modified as follows: core/sys/dsc.h - If CTK_CONF_ICONS is diabled, the whole icon-related code is disabled. - DSC_HEADER is changed to remove extra semicolon. core/sys/process.h - process_data_t is expressed by void* in signatures (known bug on sdcc). core/sys/autostart.h - autostart_processes is changed to remove extra semicolon. core/sys/cc.h - CC_CONF_ASSIGN_AGGREGATE is introduced. - CC_CONF_INC_CAST_POINTER is introduced, a workaround of a kind of sdcc bug for an increment. core/net/hc.c core/net/uip_arp.c core/net/uaodv.c - Aggregation assignments are changed to uip_ipaddr_copy. core/net/psock.c core/net/uipbuf.c core/net/dhcpc.c apps/shell/shell.c core/ctk/vnc-server.c core/ctk/vnc-out.c - "register" keyword in a signature cannot be used in sdcc, CC_REGISTER_ARG is used instead. core/net/uip-over-mesh.c - An extra semicolon is removed. apps/dhcp/dhcp-dsc.c apps/shell/shell-dsc. apps/ftp/ftp-dsc.c apps/process-list/process-list-dsc.c apps/email/email-dsc.c apps/webserver/webserver-dsc.c apps/vnc/vnc-dsc.c apps/vnc/vnc-viewer.h apps/webbrowser/www-dsc.c apps/about/about-dsc.c apps/irc/irc-dsc.c apps/telnet/telnet-dsc.c apps/telnetd/telnetd-dsc.c apps/netconf/netconf-dsc.c apps/directory/directory-dsc.c pps/calc/calc-dsc.c - Modify an extern type to a real declaration, which is static to prevent a compile error. core/net/mac/xmac.c - Variables cannot be defined in a head of block on sdcc. core/ctk/ctk.h core/ctk/ctk.c apps/program-handler/program-handler.c - If CTK_CONF_ICONS is diabled, the whole icon-related code is disabled. Makefile.include - Add a set of configuration for an assembler. - $(CLEAN) variable is introduced for customized cleanup. apps/process-list/process-list.c - PROCESSLIST_CONF_HEIGHT is introduced to address smaller screen size. core/lib/ctk-filedialog.c - FILES_CONF_HEIGHT is introduced to address smaller screen size. - "register" keyword in a signature cannot be used in sdcc, CC_REGISTER_ARG is used instead. apps/vnc/vnc-viewer.c - A cast is added to prevent a compile error. - "register" keyword in a signature cannot be used in sdcc, CC_REGISTER_ARG is used instead. apps/webbrowser/webclient.c - CC_CONF_INC_CAST_POINTER is introduced, a workaround of a kind of sdcc bug for an increment. core/loader/elfloader.c - A cast is added to prevent a compile error. core/net/rime/rimeaddr.c - An initialization is added to prevent a compile error. core/net/rime/rudolph0.c - NULL is changed to 0, because NULL causes a compile error. core/net/rime/route-discovery.c - Add an argument to match the definition of nf_callbacks. cpu/z80/strcasecmp.h cpu/z80/strcasecmp.c cpu/z80/contiki-sdcc-conf.h cpu/z80/mtarch.c cpu/z80/mtarch.h cpu/z80/Makefile.z80 - New files to make compilation availble on sdcc. - Added support for multithreading.
192 lines
4.7 KiB
C
192 lines
4.7 KiB
C
/*
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* Copyright (c) 2007, Takahide Matsutsuka.
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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
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* \file
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* Z80 machine-specific implementation for supporting multithread.
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* \author
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* Takahide Matsutsuka <markn@markn.org>
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*/
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#include "sys/mt.h"
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#include "mtarch.h"
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/*--------------------------------------------------------------------------*/
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void
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mtarch_init(void)
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{
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}
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/*--------------------------------------------------------------------------*/
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void
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mtarch_start(struct mtarch_thread *t,
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void (*function)(void *), void *data)
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{
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u16_t i;
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for(i = 0; i < MTARCH_STACKSIZE; i++) {
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t->stack[i] = i;
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}
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t->sp = &t->stack[MTARCH_STACKSIZE - 1];
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/* A parameter for method for thread function. */
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*t->sp = (u16_t) data;
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--t->sp;
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/* This will be a return address of thread function. */
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*t->sp = (u16_t) mt_exit;
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--t->sp;
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/* The thread function, is used as a return address of mtarch_switch. */
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*t->sp = (u16_t) function;
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--t->sp;
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/*
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* Space for registers.
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* af, bc, de, hl, ix, iy, af', bc', de', hl'
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*/
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/*
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* Z80 stack basis:
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* push stores the data AFTER decrementing sp.
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* pop reads the data BEFORE incrementing sp.
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*/
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t->sp = t->sp - 9;
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}
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/*--------------------------------------------------------------------------*/
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static struct mtarch_thread *running_thread;
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static u16_t *sptmp;
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static void
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mtarch_switch()
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{
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__asm
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di ; disable interrupt
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; normal registers
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push af
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push bc
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push de
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push hl
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push ix
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push iy
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; back registers
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ex af,af'
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push af
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exx
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push bc
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push de
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push hl
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; swap between running_thread->sp and SP reg
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; _running_thread in asembler below points running_thread->sp
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; sptmp = sp;
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ld (_sptmp),sp
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; sp = *(running_thread->sp);
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ld ix,(_running_thread)
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ld l,0(ix)
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ld h,1(ix)
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ld sp,hl
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; running_thread->sp = sptmp;
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ld hl,(_sptmp)
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ld 0(ix),l
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ld 1(ix),h
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; back registers
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pop hl
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pop de
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pop bc
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exx
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pop af
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ex af,af'
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; normal registers
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pop iy
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pop ix
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pop hl
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pop de
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pop bc
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pop af
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ei ; enable interrupt
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__endasm;
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// here sp indicates the address that point the function
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}
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/*--------------------------------------------------------------------------*/
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void
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mtarch_exec(struct mtarch_thread *t)
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{
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running_thread = t;
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mtarch_switch();
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running_thread = NULL;
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}
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/*--------------------------------------------------------------------------*/
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void
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mtarch_remove()
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{
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}
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/*--------------------------------------------------------------------------*/
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void
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mtarch_yield()
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{
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if (running_thread == NULL) {
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/* ERROR! we have no runnning thread. */
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return;
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}
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mtarch_switch();
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}
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/*--------------------------------------------------------------------------*/
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void mtarch_stop(struct mtarch_thread *thread)
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{
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}
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/*--------------------------------------------------------------------------*/
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void
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mtarch_pstop()
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{
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}
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/*--------------------------------------------------------------------------*/
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void
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mtarch_pstart()
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{
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}
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/*--------------------------------------------------------------------------*/
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int
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mtarch_stack_usage(struct mtarch_thread *t)
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{
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u16_t i;
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for (i = 0; i < MTARCH_STACKSIZE; i++) {
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if (t->stack[i] != i) {
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return MTARCH_STACKSIZE - i;
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}
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}
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return 0;
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}
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/*--------------------------------------------------------------------------*/
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