Open-source multiplayer game server compatible with the RuneScape client
https://www.openrs2.org/
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55 lines
1.5 KiB
55 lines
1.5 KiB
package dev.openrs2.deob.transform
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import com.github.michaelbull.logging.InlineLogger
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import dev.openrs2.asm.classpath.ClassPath
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import dev.openrs2.asm.classpath.Library
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import dev.openrs2.asm.removeDeadCode
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import dev.openrs2.asm.transform.Transformer
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import dev.openrs2.deob.OriginalPcTable
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import org.objectweb.asm.tree.ClassNode
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import org.objectweb.asm.tree.LabelNode
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import org.objectweb.asm.tree.MethodNode
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class OriginalPcRestoreTransformer : Transformer() {
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private var originalPcsRestored = 0
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override fun preTransform(classPath: ClassPath) {
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originalPcsRestored = 0
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}
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override fun transformCode(classPath: ClassPath, library: Library, clazz: ClassNode, method: MethodNode): Boolean {
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method.removeDeadCode(clazz.name)
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val pcs = mutableMapOf<LabelNode, Int>()
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for (insn in method.instructions) {
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if (insn.opcode == -1) {
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continue
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}
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val originalPc = classPath.originalPcs[insn] ?: continue
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val label = LabelNode()
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method.instructions.insertBefore(insn, label)
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pcs[label] = originalPc
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originalPcsRestored++
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}
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if (method.attrs == null) {
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method.attrs = mutableListOf()
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}
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method.attrs.add(OriginalPcTable(pcs))
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return false
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}
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override fun postTransform(classPath: ClassPath) {
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logger.info { "Restored $originalPcsRestored original instruction indexes" }
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}
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companion object {
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private val logger = InlineLogger()
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}
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}
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