91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
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// Copyright 2019 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <cstddef>
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#include <memory>
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#include <vector>
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#include "common/common_types.h"
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namespace Kernel {
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/**
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* Represents executable data that may be loaded into a kernel process.
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*
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* A code set consists of three basic segments:
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* - A code (AKA text) segment,
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* - A read-only data segment (rodata)
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* - A data segment
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*
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* The code segment is the portion of the object file that contains
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* executable instructions.
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*
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* The read-only data segment in the portion of the object file that
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* contains (as one would expect) read-only data, such as fixed constant
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* values and data structures.
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*
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* The data segment is similar to the read-only data segment -- it contains
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* variables and data structures that have predefined values, however,
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* entities within this segment can be modified.
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*/
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struct CodeSet final {
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/// A single segment within a code set.
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struct Segment final {
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/// The byte offset that this segment is located at.
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std::size_t offset = 0;
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/// The address to map this segment to.
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VAddr addr = 0;
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/// The size of this segment in bytes.
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u32 size = 0;
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};
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explicit CodeSet();
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~CodeSet();
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CodeSet(const CodeSet&) = delete;
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CodeSet& operator=(const CodeSet&) = delete;
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CodeSet(CodeSet&&) = default;
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CodeSet& operator=(CodeSet&&) = default;
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Segment& CodeSegment() {
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return segments[0];
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}
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const Segment& CodeSegment() const {
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return segments[0];
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}
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Segment& RODataSegment() {
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return segments[1];
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}
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const Segment& RODataSegment() const {
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return segments[1];
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}
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Segment& DataSegment() {
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return segments[2];
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}
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const Segment& DataSegment() const {
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return segments[2];
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}
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/// The overall data that backs this code set.
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std::shared_ptr<std::vector<u8>> memory;
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/// The segments that comprise this code set.
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std::array<Segment, 3> segments;
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/// The entry point address for this code set.
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VAddr entrypoint = 0;
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};
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} // namespace Kernel
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