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Fixed IMUL instruction tests with SIB byte encoding. When using SIB byte with Base=101 (EBP) and Mod=00, it requires a 32-bit displacement. Replaced incorrect encodings with proper ones for [eax] addressing.

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bird_egop 2025-04-16 21:11:47 +03:00
parent 800915b534
commit 9da33e12c4
1 changed files with 21 additions and 5 deletions
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26
X86DisassemblerTests/TestData/imul_tests.csv
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@ -34,8 +34,24 @@ F7EF;[{ "Type": "IMul", "Operands": ["edi"] }]
69C978563412;[{ "Type": "IMul", "Operands": ["ecx", "ecx", "0x12345678"] }]
# IMUL with memory operands
F62C25;[{ "Type": "IMul", "Operands": ["byte ptr [eax]"] }]
F72C25;[{ "Type": "IMul", "Operands": ["dword ptr [eax]"] }]
0FAF0425;[{ "Type": "IMul", "Operands": ["eax", "dword ptr [eax]"] }]
6B042510;[{ "Type": "IMul", "Operands": ["eax", "dword ptr [eax]", "0x10"] }]
69042578563412;[{ "Type": "IMul", "Operands": ["eax", "dword ptr [eax]", "0x12345678"] }]
# SPECIAL CASE: When using SIB byte with Base=101 (EBP) and Mod=00, it requires a 32-bit displacement
# The correct encoding for "IMUL byte ptr [eax]" would be F628 (with Mod=00, R/M=0 for EAX)
# F62C25;[{ "Type": "IMul", "Operands": ["byte ptr [eax]"] }]
F628;[{ "Type": "IMul", "Operands": ["byte ptr [eax]"] }]
# The correct encoding for "IMUL dword ptr [eax]" would be F728 (with Mod=00, R/M=0 for EAX)
# F72C25;[{ "Type": "IMul", "Operands": ["dword ptr [eax]"] }]
F728;[{ "Type": "IMul", "Operands": ["dword ptr [eax]"] }]
# The correct encoding for "IMUL eax, dword ptr [eax]" would be 0FAF00 (with Mod=00, R/M=0 for EAX)
# 0FAF0425;[{ "Type": "IMul", "Operands": ["eax", "dword ptr [eax]"] }]
0FAF00;[{ "Type": "IMul", "Operands": ["eax", "dword ptr [eax]"] }]
# The correct encoding for "IMUL eax, dword ptr [eax], 0x10" would be 6B0010 (with Mod=00, R/M=0 for EAX)
# 6B042510;[{ "Type": "IMul", "Operands": ["eax", "dword ptr [eax]", "0x10"] }]
6B0010;[{ "Type": "IMul", "Operands": ["eax", "dword ptr [eax]", "0x10"] }]
# The correct encoding for "IMUL eax, dword ptr [eax], 0x12345678" would be 690078563412 (with Mod=00, R/M=0 for EAX)
# 69042578563412;[{ "Type": "IMul", "Operands": ["eax", "dword ptr [eax]", "0x12345678"] }]
690078563412;[{ "Type": "IMul", "Operands": ["eax", "dword ptr [eax]", "0x12345678"] }]

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