mirror of
https://github.com/RGBCube/serenity
synced 2025-07-26 07:37:35 +00:00
Kernel: Rename Kernel/VM/ to Kernel/Memory/
This directory isn't just about virtual memory, it's about all kinds of memory management.
This commit is contained in:
parent
4e8e1b7b3a
commit
a1d7ebf85a
117 changed files with 207 additions and 204 deletions
36
Kernel/Memory/MappedROM.h
Normal file
36
Kernel/Memory/MappedROM.h
Normal file
|
@ -0,0 +1,36 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/OwnPtr.h>
|
||||
#include <Kernel/Memory/Region.h>
|
||||
#include <Kernel/PhysicalAddress.h>
|
||||
|
||||
namespace Kernel {
|
||||
|
||||
class MappedROM {
|
||||
public:
|
||||
const u8* base() const { return region->vaddr().offset(offset).as_ptr(); }
|
||||
const u8* end() const { return base() + size; }
|
||||
OwnPtr<Region> region;
|
||||
size_t size { 0 };
|
||||
size_t offset { 0 };
|
||||
PhysicalAddress paddr;
|
||||
|
||||
Optional<PhysicalAddress> find_chunk_starting_with(StringView prefix, size_t chunk_size) const
|
||||
{
|
||||
for (auto* candidate = base(); candidate < end(); candidate += chunk_size) {
|
||||
if (!__builtin_memcmp(prefix.characters_without_null_termination(), candidate, prefix.length()))
|
||||
return paddr_of(candidate);
|
||||
}
|
||||
return {};
|
||||
}
|
||||
|
||||
PhysicalAddress paddr_of(const u8* ptr) const { return paddr.offset(ptr - this->base()); }
|
||||
};
|
||||
|
||||
}
|
Loading…
Add table
Add a link
Reference in a new issue