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54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
/*
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* \brief L4Re functions needed by L4Linux
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* \author Stefan Kalkowski
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* \date 2011-03-17
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*/
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/*
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* Copyright (C) 2011-2012 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _L4__UTIL__UTIL_H_
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#define _L4__UTIL__UTIL_H_
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#include <l4/sys/types.h>
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#include <l4/sys/compiler.h>
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#include <l4/sys/ipc.h>
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L4_CV void l4_sleep(int ms);
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L4_CV void l4_sleep_forever(void) __attribute__((noreturn));
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static inline void
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l4_touch_ro(const void*addr, unsigned size)
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{
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volatile const char *bptr, *eptr;
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bptr = (const char*)(((unsigned)addr) & L4_PAGEMASK);
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eptr = (const char*)(((unsigned)addr+size-1) & L4_PAGEMASK);
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for(;bptr<=eptr;bptr+=L4_PAGESIZE) {
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(void)(*bptr);
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}
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}
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static inline void
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l4_touch_rw(const void*addr, unsigned size)
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{
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volatile char *bptr;
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volatile const char *eptr;
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bptr = (char*)(((unsigned)addr) & L4_PAGEMASK);
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eptr = (const char*)(((unsigned)addr+size-1) & L4_PAGEMASK);
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for(;bptr<=eptr;bptr+=L4_PAGESIZE) {
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char x = *bptr;
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*bptr = x;
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}
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}
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#endif /* _L4__UTIL__UTIL_H_ */
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