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Let kernel initialize stack on it's own without relying on boot loader

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This commit is contained in:
Rafal Kupiec
2023-02-05 09:55:59 +01:00
parent 0b743a5f26
commit d6aac59199
10 changed files with 38 additions and 60 deletions
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12
xtoskrnl/ar/i686/procsup.c
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@@ -22,6 +22,7 @@ ArInitializeProcessor(VOID)
{
KDESCRIPTOR GdtDescriptor, IdtDescriptor;
PKPROCESSOR_BLOCK ProcessorBlock;
PVOID KernelFaultStack;
PKGDTENTRY Gdt;
PKIDTENTRY Idt;
PKTSS Tss;
@@ -30,12 +31,13 @@ ArInitializeProcessor(VOID)
Gdt = ArInitialGdt;
Idt = ArInitialIdt;
Tss = &ArInitialTss;
KernelFaultStack = &ArKernelFaultStack;
/* Load processor block */
ProcessorBlock = CONTAIN_RECORD(&ArInitialProcessorBlock.Prcb, KPROCESSOR_BLOCK, Prcb);
/* Initialize processor block */
ArpInitializeProcessorBlock(ProcessorBlock, Gdt, Idt, Tss, (PVOID)KeInitializationBlock->KernelFaultStack);
ArpInitializeProcessorBlock(ProcessorBlock, Gdt, Idt, Tss, KernelFaultStack);
/* Initialize GDT, IDT and TSS */
ArpInitializeGdt(ProcessorBlock);
@@ -275,8 +277,8 @@ ArpSetDoubleFaultTssEntry(IN PKPROCESSOR_BLOCK ProcessorBlock)
Tss->Flags = 0;
Tss->LDT = KGDT_R0_LDT;
Tss->CR3 = ArReadControlRegister(3);
Tss->Esp = KeInitializationBlock->KernelFaultStack;
Tss->Esp0 = KeInitializationBlock->KernelFaultStack;
Tss->Esp = (ULONG_PTR)&ArKernelFaultStack;
Tss->Esp0 = (ULONG_PTR)&ArKernelFaultStack;
Tss->Eip = PtrToUlong(ArpHandleTrap08);
Tss->Cs = KGDT_R0_CODE;
Tss->Ds = KGDT_R3_DATA | RPL_MASK;
@@ -444,8 +446,8 @@ ArpSetNonMaskableInterruptTssEntry(IN PKPROCESSOR_BLOCK ProcessorBlock)
Tss->Flags = 0;
Tss->LDT = KGDT_R0_LDT;
Tss->CR3 = ArReadControlRegister(3);
Tss->Esp = KeInitializationBlock->KernelFaultStack;
Tss->Esp0 = KeInitializationBlock->KernelFaultStack;
Tss->Esp = (ULONG_PTR)&ArKernelFaultStack;
Tss->Esp0 = (ULONG_PTR)&ArKernelFaultStack;
Tss->Eip = PtrToUlong(ArpHandleTrap02);
Tss->Cs = KGDT_R0_CODE;
Tss->Ds = KGDT_R3_DATA | RPL_MASK;