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Replace manual IDT manipulation with SetIdtGate function call

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This commit is contained in:
Aiken Harris
2026-03-26 23:10:00 +01:00
parent 9479f3d364
commit 9b19bc94b3
4 changed files with 28 additions and 19 deletions
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14
xtoskrnl/includes/ar/amd64/procsup.hh
View File

@@ -31,6 +31,13 @@ namespace AR
OUT PVOID *TrampolineCode, OUT PVOID *TrampolineCode,
OUT PULONG_PTR TrampolineSize); OUT PULONG_PTR TrampolineSize);
STATIC XTAPI VOID InitializeProcessor(IN PVOID ProcessorStructures); STATIC XTAPI VOID InitializeProcessor(IN PVOID ProcessorStructures);
STATIC XTAPI VOID SetIdtGate(IN PKIDTENTRY Idt,
IN USHORT Vector,
IN PVOID Handler,
IN USHORT Selector,
IN USHORT Ist,
IN USHORT Dpl,
IN USHORT Type);
private: private:
STATIC XTAPI VOID IdentifyProcessor(VOID); STATIC XTAPI VOID IdentifyProcessor(VOID);
@@ -62,13 +69,6 @@ namespace AR
STATIC XTAPI VOID SetGdtEntryBase(IN PKGDTENTRY Gdt, STATIC XTAPI VOID SetGdtEntryBase(IN PKGDTENTRY Gdt,
IN USHORT Selector, IN USHORT Selector,
IN ULONG_PTR Base); IN ULONG_PTR Base);
STATIC XTAPI VOID SetIdtGate(IN PKIDTENTRY Idt,
IN USHORT Vector,
IN PVOID Handler,
IN USHORT Selector,
IN USHORT Ist,
IN USHORT Dpl,
IN USHORT Type);
}; };
} }

14
xtoskrnl/includes/ar/i686/procsup.hh
View File

@@ -34,6 +34,13 @@ namespace AR
OUT PVOID *TrampolineCode, OUT PVOID *TrampolineCode,
OUT PULONG_PTR TrampolineSize); OUT PULONG_PTR TrampolineSize);
STATIC XTAPI VOID InitializeProcessor(IN PVOID ProcessorStructures); STATIC XTAPI VOID InitializeProcessor(IN PVOID ProcessorStructures);
STATIC XTAPI VOID SetIdtGate(IN PKIDTENTRY Idt,
IN USHORT Vector,
IN PVOID Handler,
IN USHORT Selector,
IN USHORT Ist,
IN USHORT Dpl,
IN USHORT Type);
private: private:
STATIC XTAPI VOID IdentifyProcessor(VOID); STATIC XTAPI VOID IdentifyProcessor(VOID);
@@ -67,13 +74,6 @@ namespace AR
STATIC XTAPI VOID SetGdtEntryBase(IN PKGDTENTRY Gdt, STATIC XTAPI VOID SetGdtEntryBase(IN PKGDTENTRY Gdt,
IN USHORT Selector, IN USHORT Selector,
IN ULONG_PTR Base); IN ULONG_PTR Base);
STATIC XTAPI VOID SetIdtGate(IN PKIDTENTRY Idt,
IN USHORT Vector,
IN PVOID Handler,
IN USHORT Selector,
IN USHORT Ist,
IN USHORT Dpl,
IN USHORT Type);
STATIC XTAPI VOID SetNonMaskableInterruptTssEntry(IN PKPROCESSOR_BLOCK ProcessorBlock, STATIC XTAPI VOID SetNonMaskableInterruptTssEntry(IN PKPROCESSOR_BLOCK ProcessorBlock,
IN PVOID KernelFaultStack); IN PVOID KernelFaultStack);

10
xtoskrnl/ke/amd64/irq.cc
View File

@@ -33,7 +33,11 @@ KE::Irq::SetInterruptHandler(IN ULONG Vector,
ProcessorBlock = KE::Processor::GetCurrentProcessorBlock(); ProcessorBlock = KE::Processor::GetCurrentProcessorBlock();
/* Update interrupt handler */ /* Update interrupt handler */
ProcessorBlock->IdtBase[(UCHAR) Vector].OffsetLow = ((ULONG_PTR)Handler & 0xFFFF); AR::ProcSup::SetIdtGate(ProcessorBlock->IdtBase,
ProcessorBlock->IdtBase[(UCHAR) Vector].OffsetMiddle = (((ULONG_PTR)Handler >> 16) & 0xFFFF); Vector,
ProcessorBlock->IdtBase[(UCHAR) Vector].OffsetHigh = (ULONG_PTR)Handler >> 32; Handler,
KGDT_R0_CODE,
0,
KIDT_ACCESS_RING0,
AMD64_INTERRUPT_GATE);
} }

9
xtoskrnl/ke/i686/irq.cc
View File

@@ -33,6 +33,11 @@ KE::Irq::SetInterruptHandler(IN ULONG Vector,
ProcessorBlock = KE::Processor::GetCurrentProcessorBlock(); ProcessorBlock = KE::Processor::GetCurrentProcessorBlock();
/* Update interrupt handler */ /* Update interrupt handler */
ProcessorBlock->IdtBase[(UCHAR) Vector].Offset = (USHORT)((ULONG)Handler & 0xFFFF); AR::ProcSup::SetIdtGate(ProcessorBlock->IdtBase,
ProcessorBlock->IdtBase[(UCHAR) Vector].ExtendedOffset = (USHORT)((ULONG)Handler >> 16); Vector,
Handler,
KGDT_R0_CODE,
0,
KIDT_ACCESS_RING0,
I686_INTERRUPT_GATE);
} }