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/* This file is part of test microkernel for OpenRISC 1000. */

/* (C) 2000 Damjan Lampret, lampret@opencores.org */

#include "support.h"

#include "uos.h"

#include "ipc.h"

#include "int.h"

extern struct tcb tasks[MAX_TASKS+1];

int task(int id)

{

        int rc;

        struct _msg {

                char            id;

                unsigned long   count;

        } msg;

        printf("Task %d started\n", id);

        if(id == 1) {

                msg.id = 1;

                msg.count = 0;

                uos_msgsnd(2, (char *)&msg, sizeof(msg));

        }

        for(;;) {

                rc = uos_msgrcv(0, (char *)&msg, sizeof(msg));

                if(rc != 0) {

                        printf("Task %d: Waiting for massage\n", id);

                } else {

                        printf("Task %d: Got massage from task %d: 0x%.8x. Sending message to task %d: 0x%.8x \n", id, msg.id, (int)msg.count, (id == 3 ? 1 : (id + 1)), (int)(msg.count  + 1));

                        msg.id = id;

                        if((id == 1) && (msg.count > 15)) {

                                report(msg.count + 0xdeadde9c);

                                exit(0);

                        }

                        msg.count += 1;

                        uos_msgsnd((id == 3 ? 1 : (id + 1)), (char *)&msg, sizeof(msg));

                }

        }

}

/* Called by kernel_init to collect all tasks entries. */

void tasks_entries()

{

        tasks[1].regs.pc = (unsigned long)task;

        tasks[2].regs.pc = (unsigned long)task;

        tasks[3].regs.pc = (unsigned long)task;

}