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Code Issues Releases Activity

Fixed floating point handlers for qword operands and added missing FCOM ST(0), ST(i) handler

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This commit is contained in:
bird_egop
2025-04-18 00:44:57 +03:00
parent e6e3e886c8
commit 66f9e838ad
12 changed files with 156 additions and 38 deletions
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4
X86Disassembler/X86/Handlers/FloatingPoint/Arithmetic/FaddFloat64Handler.cs
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@ -51,8 +51,8 @@ public class FaddFloat64Handler : InstructionHandler
return false;
}
// Read the ModR/M byte using the specialized FPU method
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu();
// Read the ModR/M byte using the specialized FPU method for 64-bit operands
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu64();
// Verify reg field is 0 (FADD)
if (reg != 0)

2
X86Disassembler/X86/Handlers/FloatingPoint/Arithmetic/FdivFloat64Handler.cs
View File

@ -52,7 +52,7 @@ public class FdivFloat64Handler : InstructionHandler
}
// Read the ModR/M byte using the specialized FPU method
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu();
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu64();
// Set the instruction type
instruction.Type = InstructionType.Fdiv;

2
X86Disassembler/X86/Handlers/FloatingPoint/Arithmetic/FdivrFloat64Handler.cs
View File

@ -52,7 +52,7 @@ public class FdivrFloat64Handler : InstructionHandler
}
// Read the ModR/M byte using the specialized FPU method
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu();
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu64();
// Set the instruction type
instruction.Type = InstructionType.Fdivr;

4
X86Disassembler/X86/Handlers/FloatingPoint/Arithmetic/FmulFloat64Handler.cs
View File

@ -51,8 +51,8 @@ public class FmulFloat64Handler : InstructionHandler
return false;
}
// Read the ModR/M byte using the specialized FPU method
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu();
// Read the ModR/M byte using the specialized FPU method for 64-bit operands
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu64();
// Set the instruction type
instruction.Type = InstructionType.Fmul;

2
X86Disassembler/X86/Handlers/FloatingPoint/Arithmetic/FsubFloat64Handler.cs
View File

@ -52,7 +52,7 @@ public class FsubFloat64Handler : InstructionHandler
}
// Read the ModR/M byte using the specialized FPU method
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu();
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu64();
// Set the instruction type
instruction.Type = InstructionType.Fsub;

2
X86Disassembler/X86/Handlers/FloatingPoint/Arithmetic/FsubrFloat64Handler.cs
View File

@ -52,7 +52,7 @@ public class FsubrFloat64Handler : InstructionHandler
}
// Read the ModR/M byte using the specialized FPU method
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu();
var (mod, reg, fpuRm, rawOperand) = ModRMDecoder.ReadModRMFpu64();
// Set the instruction type
instruction.Type = InstructionType.Fsubr;