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Initialize IDT with specific trap handlers for each vector

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This commit is contained in:
Aiken Harris
2026-03-27 19:16:16 +01:00
parent a64aa83eb8
commit 9c449bed43
6 changed files with 27 additions and 3 deletions
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9
xtoskrnl/ar/amd64/archsup.S
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@@ -187,3 +187,12 @@ KernelModeReturn$\Vector:
ArCreateTrapHandler 0x\i\j
.endr
.endr
/* Define array of pointers to the trap handlers */
.global ArTrapEntry
ArTrapEntry:
.irp i,0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F
.irp j,0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F
.quad ArTrap0x\i\j
.endr
.endr

2
xtoskrnl/ar/amd64/procsup.cc
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@@ -249,7 +249,7 @@ AR::ProcSup::InitializeIdt(IN PKPROCESSOR_BLOCK ProcessorBlock)
for(Vector = 0; Vector < IDT_ENTRIES; Vector++)
{
/* Set the IDT to handle unexpected interrupts */
SetIdtGate(ProcessorBlock->IdtBase, Vector, (PVOID)ArTrap0xFF, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_INTERRUPT_GATE);
SetIdtGate(ProcessorBlock->IdtBase, Vector, (PVOID)ArTrapEntry[Vector], KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_INTERRUPT_GATE);
}
/* Setup IDT handlers for known interrupts and traps */