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Generate distinct handlers for CPU traps and hardware interrupts
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This commit is contained in:
Aiken Harris
2026-03-27 20:42:41 +01:00
parent 0c17337388
commit 32d3672a51
8 changed files with 150 additions and 343 deletions
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55
xtoskrnl/ar/i686/procsup.cc
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@@ -242,34 +242,35 @@ 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)ArTrapEntry[Vector], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_INTERRUPT_GATE);
SetIdtGate(ProcessorBlock->IdtBase, Vector, (PVOID)ArInterruptEntry[Vector],
KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_INTERRUPT_GATE);
}
/* Setup IDT handlers for known interrupts and traps */
SetIdtGate(ProcessorBlock->IdtBase, 0x00, (PVOID)ArTrap0x00, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x01, (PVOID)ArTrap0x01, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x02, (PVOID)ArTrap0x02, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_INTERRUPT_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x03, (PVOID)ArTrap0x03, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x04, (PVOID)ArTrap0x04, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x05, (PVOID)ArTrap0x05, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x06, (PVOID)ArTrap0x06, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x07, (PVOID)ArTrap0x07, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x08, (PVOID)ArTrap0x08, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x09, (PVOID)ArTrap0x09, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x0A, (PVOID)ArTrap0x0A, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x0B, (PVOID)ArTrap0x0B, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x0C, (PVOID)ArTrap0x0C, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x0D, (PVOID)ArTrap0x0D, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x0E, (PVOID)ArTrap0x0E, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x10, (PVOID)ArTrap0x10, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x11, (PVOID)ArTrap0x11, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x12, (PVOID)ArTrap0x12, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x13, (PVOID)ArTrap0x13, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x2A, (PVOID)ArTrap0x2A, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x2B, (PVOID)ArTrap0x2B, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x2C, (PVOID)ArTrap0x2C, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x2D, (PVOID)ArTrap0x2D, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x2E, (PVOID)ArTrap0x2E, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x00, (PVOID)ArTrapEntry[0x00], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x01, (PVOID)ArTrapEntry[0x01], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x02, (PVOID)ArTrapEntry[0x02], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_INTERRUPT_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x03, (PVOID)ArTrapEntry[0x03], KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x04, (PVOID)ArTrapEntry[0x04], KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x05, (PVOID)ArTrapEntry[0x05], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x06, (PVOID)ArTrapEntry[0x06], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x07, (PVOID)ArTrapEntry[0x07], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x08, (PVOID)ArTrapEntry[0x08], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x09, (PVOID)ArTrapEntry[0x09], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x0A, (PVOID)ArTrapEntry[0x0A], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x0B, (PVOID)ArTrapEntry[0x0B], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x0C, (PVOID)ArTrapEntry[0x0C], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x0D, (PVOID)ArTrapEntry[0x0D], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x0E, (PVOID)ArTrapEntry[0x0E], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x10, (PVOID)ArTrapEntry[0x10], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x11, (PVOID)ArTrapEntry[0x11], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x12, (PVOID)ArTrapEntry[0x12], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x13, (PVOID)ArTrapEntry[0x13], KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x2A, (PVOID)ArTrapEntry[0x2A], KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x2B, (PVOID)ArTrapEntry[0x2B], KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x2C, (PVOID)ArTrapEntry[0x2C], KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x2D, (PVOID)ArTrapEntry[0x2D], KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
SetIdtGate(ProcessorBlock->IdtBase, 0x2E, (PVOID)ArTrapEntry[0x2E], KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
}
/**
@@ -506,7 +507,7 @@ AR::ProcSup::SetDoubleFaultTssEntry(IN PKPROCESSOR_BLOCK ProcessorBlock,
Tss->CR3 = CpuFunc::ReadControlRegister(3);
Tss->Esp = (ULONG_PTR)KernelFaultStack;
Tss->Esp0 = (ULONG_PTR)KernelFaultStack;
Tss->Eip = PtrToUlong(ArTrap0x08);
Tss->Eip = PtrToUlong(ArTrapEntry[0x08]);
Tss->Cs = KGDT_R0_CODE;
Tss->Ds = KGDT_R3_DATA | RPL_MASK;
Tss->Es = KGDT_R3_DATA | RPL_MASK;
@@ -720,7 +721,7 @@ AR::ProcSup::SetNonMaskableInterruptTssEntry(IN PKPROCESSOR_BLOCK ProcessorBlock
Tss->CR3 = CpuFunc::ReadControlRegister(3);
Tss->Esp = (ULONG_PTR)KernelFaultStack;
Tss->Esp0 = (ULONG_PTR)KernelFaultStack;
Tss->Eip = PtrToUlong(ArTrap0x02);
Tss->Eip = PtrToUlong(ArTrapEntry[0x02]);
Tss->Cs = KGDT_R0_CODE;
Tss->Ds = KGDT_R3_DATA | RPL_MASK;
Tss->Es = KGDT_R3_DATA | RPL_MASK;