61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/*
|
|
* \brief Core-internal utilities
|
|
* \author Norman Feske
|
|
* \date 2009-10-02
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2009-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _CORE__INCLUDE__UTIL_H_
|
|
#define _CORE__INCLUDE__UTIL_H_
|
|
|
|
/* Genode includes */
|
|
#include <rm_session/rm_session.h>
|
|
#include <base/printf.h>
|
|
|
|
namespace Genode {
|
|
|
|
constexpr size_t get_page_size_log2() { return 12; }
|
|
constexpr size_t get_page_size() { return 1 << get_page_size_log2(); }
|
|
constexpr addr_t get_page_mask() { return ~(get_page_size() - 1); }
|
|
inline addr_t trunc_page(addr_t addr) { return addr & get_page_mask(); }
|
|
inline addr_t round_page(addr_t addr) { return trunc_page(addr + get_page_size() - 1); }
|
|
|
|
/**
|
|
* Select source used for map operations
|
|
*/
|
|
inline addr_t map_src_addr(addr_t core_local, addr_t phys) { return phys; }
|
|
|
|
/**
|
|
* Return highest supported flexpage size for the given mapping size
|
|
*
|
|
* This function is called by the page-fault handler to determine the
|
|
* mapping granularity to be used for a page-fault answer. If a kernel
|
|
* supports flexible page sizes, this function can just return the
|
|
* argument. If a kernel only supports a certain set of map sizes such
|
|
* as 4K and 4M, this function should select one of those smaller or
|
|
* equal to the argument.
|
|
*/
|
|
inline size_t constrain_map_size_log2(size_t size_log2)
|
|
{
|
|
return get_page_size_log2();
|
|
}
|
|
|
|
inline void print_page_fault(const char *msg, addr_t pf_addr, addr_t pf_ip,
|
|
Rm_session::Fault_type pf_type,
|
|
unsigned long faulter_badge)
|
|
{
|
|
printf("%s (%s pf_addr=%p pf_ip=%p from %02lx)", msg,
|
|
pf_type == Rm_session::WRITE_FAULT ? "WRITE" : "READ",
|
|
(void *)pf_addr, (void *)pf_ip,
|
|
faulter_badge);
|
|
}
|
|
}
|
|
|
|
#endif /* _CORE__INCLUDE__UTIL_H_ */
|