| 1 | /*
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| 2 | * Copyright (C) 2006 Ondrej Palkovsky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup klog KLog
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| 30 | * @brief HelenOS KLog
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| 31 | * @{
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| 32 | */
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| 33 | /**
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| 34 | * @file
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| 35 | */
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| 36 |
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| 37 | #include <stdio.h>
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| 38 | #include <ipc/ipc.h>
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| 39 | #include <async.h>
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| 40 | #include <ipc/services.h>
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| 41 | #include <as.h>
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| 42 | #include <kernel/ipc/irq.h>
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| 43 |
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| 44 | /* Pointer to klog area */
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| 45 | static char *klog;
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| 46 |
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| 47 | void interrupt_received(ipc_callid_t callid, ipc_call_t *call)
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| 48 | {
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| 49 | int i;
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| 50 |
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| 51 | async_serialize_start();
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| 52 | for (i=0; klog[i + IPC_GET_ARG1(*call)] && i < IPC_GET_ARG2(*call); i++)
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| 53 | putchar(klog[i + IPC_GET_ARG1(*call)]);
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| 54 | putchar('\n');
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| 55 | async_serialize_end();
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| 56 | }
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| 57 |
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| 58 | int main(int argc, char *argv[])
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| 59 | {
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| 60 | int res;
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| 61 | void *mapping;
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| 62 |
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| 63 | printf("Kernel console output.\n");
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| 64 |
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| 65 | mapping = as_get_mappable_page(PAGE_SIZE);
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| 66 | res = ipc_call_sync_3(PHONE_NS, IPC_M_AS_AREA_RECV,
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| 67 | (sysarg_t)mapping, PAGE_SIZE, SERVICE_MEM_KLOG,
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| 68 | NULL,NULL,NULL);
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| 69 | if (res) {
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| 70 | printf("Failed to initialize klog memarea\n");
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| 71 | _exit(1);
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| 72 | }
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| 73 | klog = mapping;
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| 74 |
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| 75 | if (ipc_register_irq(IPC_IRQ_KLOG, NULL)) {
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| 76 | printf("Error registering for klog service.\n");
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| 77 | return 0;
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| 78 | }
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| 79 |
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| 80 | async_set_interrupt_received(interrupt_received);
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| 81 |
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| 82 | async_manager();
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| 83 |
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| 84 | return 0;
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| 85 | }
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| 86 |
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| 87 | /** @}
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| 88 | */
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