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修复FieldEncryption处理浮点类型时未插入castFloatAsInt指令，在il2cpp生成的代码为直接强转`(int)f`，运行结果错误的bug

before-split
walon 2025-05-25 10:06:15 +08:00
parent c84d4bae5b
commit 702f20c6b0
1 changed files with 27 additions and 0 deletions
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27
com.code-philosophy.obfuz/Editor/ObfusPasses/FieldEncrypt/DefaultFieldEncryptor.cs
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@ -108,6 +108,10 @@ namespace Obfuz.ObfusPasses.FieldEncrypt
{
// value has been put on stack
if (fei.fieldType == ElementType.R4)
{
outputInstructions.Add(Instruction.Create(OpCodes.Call, importer.CastFloatAsInt));
}
// encrypt
outputInstructions.Add(Instruction.CreateLdcI4(fei.encryptOps));
outputInstructions.Add(Instruction.CreateLdcI4(fei.salt));
@ -115,10 +119,19 @@ namespace Obfuz.ObfusPasses.FieldEncrypt
// xor
outputInstructions.Add(Instruction.CreateLdcI4((int)fei.xorValueForZero));
outputInstructions.Add(Instruction.Create(OpCodes.Xor));
if (fei.fieldType == ElementType.R4)
{
outputInstructions.Add(Instruction.Create(OpCodes.Call, importer.CastIntAsFloat));
}
}
else if (fei.fieldType == ElementType.I8 || fei.fieldType == ElementType.U8 || fei.fieldType == ElementType.R8)
{
// value has been put on stack
if (fei.fieldType == ElementType.R8)
{
outputInstructions.Add(Instruction.Create(OpCodes.Call, importer.CastDoubleAsLong));
}
// encrypt
outputInstructions.Add(Instruction.CreateLdcI4(fei.encryptOps));
@ -127,6 +140,10 @@ namespace Obfuz.ObfusPasses.FieldEncrypt
// xor
outputInstructions.Add(Instruction.Create(OpCodes.Ldc_I8, fei.xorValueForZero));
outputInstructions.Add(Instruction.Create(OpCodes.Xor));
if (fei.fieldType == ElementType.R8)
{
outputInstructions.Add(Instruction.Create(OpCodes.Call, importer.CastLongAsDouble));
}
}
else
{
@ -157,6 +174,11 @@ namespace Obfuz.ObfusPasses.FieldEncrypt
outputInstructions.Add(Instruction.CreateLdcI4(fei.encryptOps));
outputInstructions.Add(Instruction.CreateLdcI4(fei.salt));
outputInstructions.Add(Instruction.Create(OpCodes.Call, encryptionServiceMetadataImporter.DecryptInt));
if (fei.fieldType == ElementType.R4)
{
outputInstructions.Add(Instruction.Create(OpCodes.Call, importer.CastIntAsFloat));
}
}
else if (fei.fieldType == ElementType.I8 || fei.fieldType == ElementType.U8 || fei.fieldType == ElementType.R8)
{
@ -173,6 +195,11 @@ namespace Obfuz.ObfusPasses.FieldEncrypt
outputInstructions.Add(Instruction.CreateLdcI4(fei.encryptOps));
outputInstructions.Add(Instruction.CreateLdcI4(fei.salt));
outputInstructions.Add(Instruction.Create(OpCodes.Call, encryptionServiceMetadataImporter.DecryptLong));
if (fei.fieldType == ElementType.R8)
{
outputInstructions.Add(Instruction.Create(OpCodes.Call, importer.CastLongAsDouble));
}
}
else
{