2025-04-15 22:20:46 +03:00
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# NEG instruction tests
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# Format: RawBytes;Instructions
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RawBytes;Instructions
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# NEG r/m8 (opcode F6 /3)
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F6D8;[{ "Type": "Neg", "Operands": ["al"] }]
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F6DB;[{ "Type": "Neg", "Operands": ["bl"] }]
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F6D9;[{ "Type": "Neg", "Operands": ["cl"] }]
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F6DA;[{ "Type": "Neg", "Operands": ["dl"] }]
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# NEG r/m32 (opcode F7 /3)
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F7D8;[{ "Type": "Neg", "Operands": ["eax"] }]
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F7DB;[{ "Type": "Neg", "Operands": ["ebx"] }]
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F7D9;[{ "Type": "Neg", "Operands": ["ecx"] }]
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F7DA;[{ "Type": "Neg", "Operands": ["edx"] }]
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F7DC;[{ "Type": "Neg", "Operands": ["esp"] }]
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F7DD;[{ "Type": "Neg", "Operands": ["ebp"] }]
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F7DE;[{ "Type": "Neg", "Operands": ["esi"] }]
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F7DF;[{ "Type": "Neg", "Operands": ["edi"] }]
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# NEG with memory operands
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2025-04-16 20:37:46 +03:00
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# SPECIAL CASE: When using SIB byte with Base=101 (EBP) and Mod=00, it requires a 32-bit displacement
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# The correct encoding for "NEG byte ptr [eax]" would be F618 (with Mod=00, R/M=0 for EAX)
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# F61C25;[{ "Type": "Neg", "Operands": ["byte ptr [eax]"] }]
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F618;[{ "Type": "Neg", "Operands": ["byte ptr [eax]"] }]
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# The correct encoding for "NEG dword ptr [eax]" would be F718 (with Mod=00, R/M=0 for EAX)
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# F71C25;[{ "Type": "Neg", "Operands": ["dword ptr [eax]"] }]
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F718;[{ "Type": "Neg", "Operands": ["dword ptr [eax]"] }]
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# This test case is correct, as it includes the required displacement
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2025-04-16 20:54:08 +03:00
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F71C2510000000;[{ "Type": "Neg", "Operands": ["dword ptr [0x10]"] }]
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