2011-12-22 16:19:25 +01:00
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/*
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* \brief OKL4 utilities
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* \author Norman Feske
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* \date 2009-03-31
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*/
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/*
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2017-02-20 13:23:52 +01:00
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* Copyright (C) 2009-2017 Genode Labs GmbH
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2011-12-22 16:19:25 +01:00
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*
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* This file is part of the Genode OS framework, which is distributed
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2017-02-20 13:23:52 +01:00
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* under the terms of the GNU Affero General Public License version 3.
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2011-12-22 16:19:25 +01:00
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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 <rm_session/rm_session.h>
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#include <base/stdint.h>
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base: avoid use of deprecated base/printf.h
Besides adapting the components to the use of base/log.h, the patch
cleans up a few base headers, i.e., it removes unused includes from
root/component.h, specifically base/heap.h and
ram_session/ram_session.h. Hence, components that relied on the implicit
inclusion of those headers have to manually include those headers now.
While adjusting the log messages, I repeatedly stumbled over the problem
that printing char * arguments is ambiguous. It is unclear whether to
print the argument as pointer or null-terminated string. To overcome
this problem, the patch introduces a new type 'Cstring' that allows the
caller to express that the argument should be handled as null-terminated
string. As a nice side effect, with this type in place, the optional len
argument of the 'String' class could be removed. Instead of supplying a
pair of (char const *, size_t), the constructor accepts a 'Cstring'.
This, in turn, clears the way let the 'String' constructor use the new
output mechanism to assemble a string from multiple arguments (and
thereby getting rid of snprintf within Genode in the near future).
To enforce the explicit resolution of the char * ambiguity, the 'char *'
overload of the 'print' function is marked as deleted.
Issue #1987
2016-07-13 19:07:09 +02:00
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#include <base/log.h>
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2011-12-22 16:19:25 +01:00
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#include <util/touch.h>
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2016-04-20 21:12:57 +02:00
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/* base-internal includes */
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#include <base/internal/page_size.h>
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2011-12-22 16:19:25 +01:00
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/* OKL4 includes */
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namespace Okl4 { extern "C" {
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#include <l4/types.h>
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#include <l4/kdebug.h>
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} }
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/*
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* The binding for 'L4_KDB_Enter' on ARM takes a 'char *' as argument, which
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* prevents us from passing a plain const "string". However, on x86, the
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* binding is a preprocessor macro accepting only a "string" as argument.
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* Unless the OKL4 bindings get fixed, we have to handle both cases separately.
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*/
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#ifdef __L4__X86__KDEBUG_H__
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#define ENTER_KDB(msg) L4_KDB_Enter(msg);
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#else
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#define ENTER_KDB(msg) L4_KDB_Enter((char *)msg);
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#endif
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namespace Genode {
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inline void log_event(const char *s) { }
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inline void log_event(const char *s, unsigned v1, unsigned v2, unsigned v3) { }
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inline void panic(const char *s)
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{
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using namespace Okl4;
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base: avoid use of deprecated base/printf.h
Besides adapting the components to the use of base/log.h, the patch
cleans up a few base headers, i.e., it removes unused includes from
root/component.h, specifically base/heap.h and
ram_session/ram_session.h. Hence, components that relied on the implicit
inclusion of those headers have to manually include those headers now.
While adjusting the log messages, I repeatedly stumbled over the problem
that printing char * arguments is ambiguous. It is unclear whether to
print the argument as pointer or null-terminated string. To overcome
this problem, the patch introduces a new type 'Cstring' that allows the
caller to express that the argument should be handled as null-terminated
string. As a nice side effect, with this type in place, the optional len
argument of the 'String' class could be removed. Instead of supplying a
pair of (char const *, size_t), the constructor accepts a 'Cstring'.
This, in turn, clears the way let the 'String' constructor use the new
output mechanism to assemble a string from multiple arguments (and
thereby getting rid of snprintf within Genode in the near future).
To enforce the explicit resolution of the char * ambiguity, the 'char *'
overload of the 'print' function is marked as deleted.
Issue #1987
2016-07-13 19:07:09 +02:00
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error("Panic: ", s);
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2011-12-22 16:19:25 +01:00
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ENTER_KDB("> 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 Okl4;
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if (!val) {
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base: avoid use of deprecated base/printf.h
Besides adapting the components to the use of base/log.h, the patch
cleans up a few base headers, i.e., it removes unused includes from
root/component.h, specifically base/heap.h and
ram_session/ram_session.h. Hence, components that relied on the implicit
inclusion of those headers have to manually include those headers now.
While adjusting the log messages, I repeatedly stumbled over the problem
that printing char * arguments is ambiguous. It is unclear whether to
print the argument as pointer or null-terminated string. To overcome
this problem, the patch introduces a new type 'Cstring' that allows the
caller to express that the argument should be handled as null-terminated
string. As a nice side effect, with this type in place, the optional len
argument of the 'String' class could be removed. Instead of supplying a
pair of (char const *, size_t), the constructor accepts a 'Cstring'.
This, in turn, clears the way let the 'String' constructor use the new
output mechanism to assemble a string from multiple arguments (and
thereby getting rid of snprintf within Genode in the near future).
To enforce the explicit resolution of the char * ambiguity, the 'char *'
overload of the 'print' function is marked as deleted.
Issue #1987
2016-07-13 19:07:09 +02:00
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error("assertion failed: ", s);
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2011-12-22 16:19:25 +01:00
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ENTER_KDB("Assertion failed");
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}
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}
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2014-03-10 15:24:53 +01:00
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constexpr addr_t get_page_mask() { return ~(get_page_size() - 1); }
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2011-12-22 16:19:25 +01:00
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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 void touch_ro(const void *addr, unsigned size)
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{
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using namespace Okl4;
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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 Okl4;
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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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inline addr_t trunc_page(addr_t page)
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{
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return page & get_page_mask();
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}
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inline addr_t round_page(addr_t page)
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{
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return trunc_page(page + get_page_size() - 1);
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}
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inline addr_t map_src_addr(addr_t core_local, addr_t phys) { return phys; }
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inline size_t constrain_map_size_log2(size_t size_log2) { return size_log2; }
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}
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#endif /* _CORE__INCLUDE__UTIL_H_ */
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