118 lines
2.8 KiB
C++
118 lines
2.8 KiB
C++
/*
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* \brief Pistachio utilities
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* \author Christian Helmuth
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* \date 2006-04-11
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*/
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/*
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* Copyright (C) 2006-2017 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 Affero General Public License version 3.
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*/
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#ifndef _CORE__INCLUDE__UTIL_H_
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#define _CORE__INCLUDE__UTIL_H_
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/* Genode includes */
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#include <base/stdint.h>
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#include <base/log.h>
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#include <rm_session/rm_session.h>
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#include <util/touch.h>
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/* base-internal includes */
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#include <base/internal/page_size.h>
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/* core-local includes */
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#include <kip.h>
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#include <print_l4_thread_id.h>
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/* Pistachio includes */
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namespace Pistachio {
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#include <l4/types.h>
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#include <l4/ipc.h>
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#include <l4/kdebug.h>
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}
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namespace Genode {
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inline void log_event(const char *) { }
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inline void log_event(const char *, unsigned, unsigned, unsigned) { }
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inline void panic(const char *s)
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{
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using namespace Pistachio;
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raw("Panic: ", s);
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L4_KDB_Enter("> panic <");
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}
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inline void assert(const char *s, bool val)
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{
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using namespace Pistachio;
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if (!val) {
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error("Assertion failed: ", s);
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L4_KDB_Enter("Assertion failed.");
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}
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}
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inline void touch_ro(const void *addr, unsigned size)
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{
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using namespace Pistachio;
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unsigned char const volatile *bptr;
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unsigned char const *eptr;
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L4_Word_t mask = get_page_mask();
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L4_Word_t psize = get_page_size();
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bptr = (unsigned char const volatile *)(((unsigned)addr) & mask);
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eptr = (unsigned char const *)(((unsigned)addr + size - 1) & mask);
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for ( ; bptr <= eptr; bptr += psize)
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touch_read(bptr);
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}
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inline void touch_rw(const void *addr, unsigned size)
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{
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using namespace Pistachio;
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unsigned char volatile *bptr;
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unsigned char const *eptr;
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L4_Word_t mask = get_page_mask();
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L4_Word_t psize = get_page_size();
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bptr = (unsigned char volatile *)(((unsigned)addr) & mask);
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eptr = (unsigned char const *)(((unsigned)addr + size - 1) & mask);
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for(; bptr <= eptr; bptr += psize)
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touch_read_write(bptr);
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}
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constexpr addr_t get_page_mask() { return ~(get_page_size() - 1); }
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inline size_t get_super_page_size_log2()
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{
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enum { SUPER_PAGE_SIZE_LOG2 = 22 };
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if (get_page_mask() & (1 << SUPER_PAGE_SIZE_LOG2))
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return SUPER_PAGE_SIZE_LOG2;
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/* if super pages are not supported, return default page size */
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return get_page_size();
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}
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inline size_t get_super_page_size() { return 1 << get_super_page_size_log2(); }
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inline addr_t trunc_page(addr_t addr)
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{
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return addr & get_page_mask();
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}
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inline addr_t round_page(addr_t addr)
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{
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return trunc_page(addr + get_page_size() - 1);
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}
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inline addr_t map_src_addr(addr_t core_local_addr, addr_t) {
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return core_local_addr; }
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inline size_t constrain_map_size_log2(size_t size_log2) {
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return size_log2; }
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}
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#endif /* _CORE__INCLUDE__UTIL_H_ */
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