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Code Issues Releases Activity

Fixed floating point comparison handlers for FCOM ST(i) and FCOMP ST(i) instructions

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bird_egop
2025-04-18 01:25:34 +03:00
parent 84d5652a62
commit 2a8cf9534e
6 changed files with 47 additions and 57 deletions
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16
X86DisassemblerTests/TestData/fcom_tests.csv
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@ -15,16 +15,16 @@ D8D7;[{ "Type": "Fcom", "Operands": ["ST(7)"] }]
# Memory operands
D8142510000000;[{ "Type": "Fcom", "Operands": ["dword ptr [0x10]"] }]
DC142510000000;[{ "Type": "Fcom", "Operands": ["qword ptr [0x10]"] }]
D81425;[{ "Type": "Fcom", "Operands": ["dword ptr [eax]"] }]
DC1425;[{ "Type": "Fcom", "Operands": ["qword ptr [eax]"] }]
D810;[{ "Type": "Fcom", "Operands": ["dword ptr [eax]"] }]
DC10;[{ "Type": "Fcom", "Operands": ["qword ptr [eax]"] }]
# With segment override prefixes
26D81425;[{ "Type": "Fcom", "Operands": ["dword ptr es:[eax]"] }]
2ED81425;[{ "Type": "Fcom", "Operands": ["dword ptr cs:[eax]"] }]
36D81425;[{ "Type": "Fcom", "Operands": ["dword ptr ss:[eax]"] }]
3ED81425;[{ "Type": "Fcom", "Operands": ["dword ptr ds:[eax]"] }]
64D81425;[{ "Type": "Fcom", "Operands": ["dword ptr fs:[eax]"] }]
65D81425;[{ "Type": "Fcom", "Operands": ["dword ptr gs:[eax]"] }]
26D810;[{ "Type": "Fcom", "Operands": ["dword ptr es:[eax]"] }]
2ED810;[{ "Type": "Fcom", "Operands": ["dword ptr cs:[eax]"] }]
36D810;[{ "Type": "Fcom", "Operands": ["dword ptr ss:[eax]"] }]
3ED810;[{ "Type": "Fcom", "Operands": ["dword ptr ds:[eax]"] }]
64D810;[{ "Type": "Fcom", "Operands": ["dword ptr fs:[eax]"] }]
65D810;[{ "Type": "Fcom", "Operands": ["dword ptr gs:[eax]"] }]
# FCOMP - Compare floating point values and pop
D8D8;[{ "Type": "Fcomp", "Operands": ["ST(0)"] }]

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