37 lines
1.4 KiB
Kotlin
37 lines
1.4 KiB
Kotlin
package com.smallhacker.disbrowser.asm
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import com.fasterxml.jackson.annotation.JsonIgnore
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import com.fasterxml.jackson.annotation.JsonValue
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import com.smallhacker.disbrowser.util.UInt24
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import com.smallhacker.disbrowser.util.toUInt24
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data class Address(@JsonValue val value: UInt24): Comparable<Address> {
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@JsonIgnore
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val rom = (value and 0x8000u).toUInt() == 0u
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@JsonIgnore
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val pc = snesToPc(value)
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operator fun plus(offset: Int) = Address(value + offset)
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operator fun minus(offset: Int) = Address(value - offset)
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operator fun inc() = plus(1)
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operator fun dec() = minus(1)
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override fun toString(): String = toFormattedString()
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fun toFormattedString(): String = String.format("$%02x:%04x", (value shr 16).toInt(), (value and 0xFFFFu).toInt())
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fun toSimpleString(): String = String.format("%06x", value.toInt())
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fun withinBank(value: UShort): Address = Address((this.value and 0xFF_0000u) or value.toUInt24())
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override fun compareTo(other: Address) = value.toUInt().compareTo(other.value.toUInt())
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infix fun distanceTo(other: Address)= Math.abs(value.toInt() - other.value.toInt()).toUInt()
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}
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fun address(snesAddress: Int) = Address(snesAddress.toUInt24())
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private fun snesToPc(value: UInt24): UInt {
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// TODO: This is incredibly oversimplified. Anything that isn't a small LoROM will crash and burn
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val intVal = value.toUInt()
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return (intVal and 0x7FFFu) or ((intVal and 0x7F_0000u) shr 1)
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}
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