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// IBM_PROLOG_BEGIN_TAG
// This is an automatically generated prolog.
//
// $Source: src/kernel/console.C $
//
// IBM CONFIDENTIAL
//
// COPYRIGHT International Business Machines Corp. 2010 - 2011
//
// p1
//
// Object Code Only (OCO) source materials
// Licensed Internal Code Source Materials
// IBM HostBoot Licensed Internal Code
//
// The source code for this program is not published or other-
// wise divested of its trade secrets, irrespective of what has
// been deposited with the U.S. Copyright Office.
//
// Origin: 30
//
// IBM_PROLOG_END
#include <util/singleton.H>
#include <kernel/console.H>
#include <util/sprintf.H>
#include <util/functor.H>
#include <stdarg.h>
char kernel_printk_buffer[Console::BUFFER_SIZE];
Console::Console() : iv_pos(0), iv_buffer(kernel_printk_buffer)
{
memset(iv_buffer, '\0', Console::BUFFER_SIZE);
}
int Console::putc(int c)
{
if ('\b' == c)
{
__sync_sub_and_fetch(&iv_pos, 1);
}
else if (BUFFER_SIZE > iv_pos)
{
iv_buffer[__sync_fetch_and_add(&iv_pos, 1)] = c;
}
return c;
}
void printk(const char* str, ...)
{
using Util::mem_ptr_fun;
using Util::vasprintf;
va_list args;
va_start(args, str);
Console& console = Singleton<Console>::instance();
vasprintf(mem_ptr_fun(console, &Console::putc),
str, args);
va_end(args);
}
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