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Code Issues Releases Activity

Fixed PushImm16Handler registration order to correctly handle PUSH imm16 with operand size prefix

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bird_egop 2025-04-16 21:46:08 +03:00
parent fa1a7f582c
commit 8c9b34ef09
1 changed files with 3 additions and 1 deletions
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4
X86Disassembler/X86/Handlers/InstructionHandlerFactory.cs
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@ -378,8 +378,10 @@ public class InstructionHandlerFactory
_handlers.Add(new PushRm32Handler(_decoder)); // PUSH r/m32 (opcode FF /6)
// Add PUSH immediate handlers
_handlers.Add(new PushImm32Handler(_decoder)); // PUSH imm32 (opcode 68)
// Note: Order matters! PushImm16Handler must be registered before PushImm32Handler
// since both check for opcode 68h but PushImm16Handler also checks for operand size prefix
_handlers.Add(new PushImm16Handler(_decoder)); // PUSH imm16 with operand size prefix (0x66 0x68)
_handlers.Add(new PushImm32Handler(_decoder)); // PUSH imm32 (opcode 68)
_handlers.Add(new PushImm8Handler(_decoder)); // PUSH imm8 (opcode 6A)
}