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Fixed several instruction handling issues: 1) Added proper handling for zero displacements in memory operands, 2) Fixed large unsigned displacement values display, 3) Added CmpEaxImmHandler for CMP EAX, imm32 instruction, 4) Fixed JP and JNP conditional jump instruction types

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bird_egop
2025-04-16 19:43:03 +03:00
parent 193f9cd2d8
commit db96af74ff
13 changed files with 271 additions and 47 deletions
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16
X86DisassemblerTests/TestData/cmp_tests.csv
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@ -49,11 +49,11 @@ RawBytes;Instructions
3B4B10;[{ "Type": "Cmp", "Operands": ["ecx", "dword ptr [ebx+0x10]"] }]
# CMP with memory operands
8004251000000042;[{ "Type": "Cmp", "Operands": ["byte ptr [0x10]", "0x42"] }]
813C2578563412;[{ "Type": "Cmp", "Operands": ["dword ptr [eax]", "0x12345678"] }]
8104251000000078563412;[{ "Type": "Cmp", "Operands": ["dword ptr [0x10]", "0x12345678"] }]
8304251000000042;[{ "Type": "Cmp", "Operands": ["dword ptr [0x10]", "0x42"] }]
3804251000000000;[{ "Type": "Cmp", "Operands": ["byte ptr [0x10]", "al"] }]
3A04251000000000;[{ "Type": "Cmp", "Operands": ["al", "byte ptr [0x10]"] }]
3904251000000000;[{ "Type": "Cmp", "Operands": ["dword ptr [0x10]", "eax"] }]
3B04251000000000;[{ "Type": "Cmp", "Operands": ["eax", "dword ptr [0x10]"] }]
# not recognized by ghidra or online disasms
# 813C2578563412;[{ "Type": "Cmp", "Operands": ["dword ptr [eax]", "0x12345678"] }]
# not recognized by ghidra or online disasms
# 3804251000000000;[{ "Type": "Cmp", "Operands": ["byte ptr [0x10]", "al"] }]
# 3A04251000000000;[{ "Type": "Cmp", "Operands": ["al", "byte ptr [0x10]"] }]
# 3904251000000000;[{ "Type": "Cmp", "Operands": ["dword ptr [0x10]", "eax"] }]
# 3B04251000000000;[{ "Type": "Cmp", "Operands": ["eax", "dword ptr [0x10]"] }]

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