78 lines
2.3 KiB
PHP
78 lines
2.3 KiB
PHP
<?php
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namespace Targets\TargetDescriptionFiles;
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require_once __DIR__ . "/AddressRange.php";
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require_once __DIR__ . "/MemorySegment.php";
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class AddressSpace
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{
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public ?string $key = null;
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public ?AddressRange $addressRange = null;
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public ?int $unitSize = null;
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public ?string $endianness = null;
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/** @var MemorySegment[] */
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public array $memorySegments = [];
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public function __construct(?string $key, ?int $startAddress, ?int $size, ?int $unitSize, ?string $endianness)
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{
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$this->key = $key;
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$this->addressRange = is_numeric($startAddress) && is_numeric($size)
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? new AddressRange(
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$startAddress,
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$startAddress + ($size / ($unitSize ?? 1)) - 1
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)
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: null;
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$this->unitSize = $unitSize;
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$this->endianness = $endianness;
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}
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public function size(): ?int
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{
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return $this->addressRange instanceof AddressRange
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? $this->addressRange->size() * ($this->unitSize ?? 1)
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: null;
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}
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public function getMemorySegment(string $key): ?MemorySegment
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{
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foreach ($this->memorySegments as $segment) {
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if ($segment->key === $key) {
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return $segment;
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}
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}
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return null;
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}
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public function totalSegmentSize(): int
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{
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return array_sum(
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array_map(
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fn (MemorySegment $segment): int => (int) $segment->size(),
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$this->memorySegments
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)
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);
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}
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/**
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* Returns all memory segments that intercept with the given address range.
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*
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* @param int $startAddress
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* @param int $endAddress
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*
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* @return MemorySegment[]
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*/
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public function findIntersectingMemorySegments(int $startAddress, int $endAddress): array
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{
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return array_filter(
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$this->memorySegments,
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function (MemorySegment $segment) use ($startAddress, $endAddress) : bool {
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$segmentEndAddress = $segment->addressRange->startAddress + $segment->size() - 1;
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return ($startAddress <= $segment->addressRange->startAddress && $endAddress >= $segment->addressRange->startAddress)
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|| ($startAddress >= $segment->addressRange->startAddress && $startAddress <= $segmentEndAddress);
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}
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);
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}
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}
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