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* Copyright (c) 2006 Ondrej Palkovsky
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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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* - 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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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/** @addtogroup klog KLog
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#include <ipc/services.h>
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/* Pointer to klog area */
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static size_t klog_length;
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static void interrupt_received(ipc_callid_t callid, ipc_call_t *call)
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size_t klog_start = (size_t) IPC_GET_ARG1(*call);
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size_t klog_len = (size_t) IPC_GET_ARG2(*call);
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size_t klog_stored = (size_t) IPC_GET_ARG3(*call);
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for (i = klog_len - klog_stored; i < klog_len; i++)
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putchar(klog[(klog_start + i) % klog_length]);
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int main(int argc, char *argv[])
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size_t klog_pages = sysinfo_value("klog.pages");
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size_t klog_size = klog_pages * PAGE_SIZE;
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klog_length = klog_size / sizeof(wchar_t);
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klog = (wchar_t *) as_get_mappable_page(klog_size);
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printf(NAME ": Error allocating memory area\n");
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int res = ipc_share_in_start_1_0(PHONE_NS, (void *) klog,
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klog_size, SERVICE_MEM_KLOG);
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printf(NAME ": Error initializing memory area\n");
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if (event_subscribe(EVENT_KLOG, 0) != EOK) {
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printf(NAME ": Error registering klog notifications\n");
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async_set_interrupt_received(interrupt_received);