73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
/*
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* \brief Generic page flags
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* \author Stefan Kalkowski
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* \date 2014-02-24
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*/
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/*
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* Copyright (C) 2014-2017 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 _SRC__LIB__HW__PAGE_FLAGS_H_
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#define _SRC__LIB__HW__PAGE_FLAGS_H_
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#include <base/cache.h>
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#include <base/output.h>
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namespace Hw {
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enum Writeable { RO, RW };
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enum Executeable { NO_EXEC, EXEC };
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enum Privileged { USER, KERN };
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enum Global { NO_GLOBAL, GLOBAL };
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enum Type { RAM, DEVICE };
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struct Page_flags;
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}
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struct Hw::Page_flags
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{
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Writeable writeable;
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Executeable executable;
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Privileged privileged;
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Global global;
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Type type;
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Genode::Cache_attribute cacheable;
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void print(Genode::Output & out) const
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{
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using Genode::print;
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using namespace Genode;
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print(out, (writeable == RW) ? "writeable, " : "readonly, ",
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(executable ==EXEC) ? "exec, " : "noexec, ");
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if (privileged == KERN) print(out, "privileged, ");
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if (global == GLOBAL) print(out, "global, ");
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if (type == DEVICE) print(out, "iomem, ");
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switch (cacheable) {
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case UNCACHED: print(out, "uncached"); break;
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case CACHED: print(out, "cached"); break;
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case WRITE_COMBINED: print(out, "write-combined"); break;
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};
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}
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};
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namespace Hw {
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static constexpr Page_flags PAGE_FLAGS_KERN_IO
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{ RW, NO_EXEC, KERN, GLOBAL, DEVICE, Genode::UNCACHED };
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static constexpr Page_flags PAGE_FLAGS_KERN_DATA
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{ RW, EXEC, KERN, GLOBAL, RAM, Genode::CACHED };
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static constexpr Page_flags PAGE_FLAGS_KERN_TEXT
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{ RW, EXEC, KERN, GLOBAL, RAM, Genode::CACHED };
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static constexpr Page_flags PAGE_FLAGS_KERN_EXCEP
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{ RW, EXEC, KERN, GLOBAL, RAM, Genode::CACHED };
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static constexpr Page_flags PAGE_FLAGS_UTCB
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{ RW, NO_EXEC, USER, NO_GLOBAL, RAM, Genode::CACHED };
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}
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#endif /* _SRC__LIB__HW__PAGE_FLAGS_H_ */
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