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[NTOS:KE][HALX86] Implement AP startup code (#5879)

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Co-authored-by: Victor Perevertkin <victor.perevertkin@reactos.org>

Introduce the initial changes needed to get other processors up and into kernel mode. 
This only supports x86 as of now but is the first real step towards using other system processors.
This commit is contained in:
Justin Miller 2023-11-19 15:51:33 -08:00 • committed by GitHub
parent 9e42809fc1
commit 516ccad340
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30 changed files with 799 additions and 135 deletions
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75
boot/freeldr/freeldr/ntldr/arch/i386/winldr.c
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@ -64,81 +64,6 @@ typedef struct
#define TYPE_CODE (0x10 | DESCRIPTOR_CODE | DESCRIPTOR_EXECUTE_READ)
#define TYPE_DATA (0x10 | DESCRIPTOR_READ_WRITE)
FORCEINLINE
PKGDTENTRY
KiGetGdtEntry(
IN PVOID pGdt,
IN USHORT Selector)
{
return (PKGDTENTRY)((ULONG_PTR)pGdt + (Selector & ~RPL_MASK));
}
FORCEINLINE
VOID
KiSetGdtDescriptorBase(
IN OUT PKGDTENTRY Entry,
IN ULONG32 Base)
{
Entry->BaseLow = (USHORT)(Base & 0xffff);
Entry->HighWord.Bytes.BaseMid = (UCHAR)((Base >> 16) & 0xff);
Entry->HighWord.Bytes.BaseHi = (UCHAR)((Base >> 24) & 0xff);
// Entry->BaseUpper = (ULONG)(Base >> 32);
}
FORCEINLINE
VOID
KiSetGdtDescriptorLimit(
IN OUT PKGDTENTRY Entry,
IN ULONG Limit)
{
if (Limit < 0x100000)
{
Entry->HighWord.Bits.Granularity = 0;
}
else
{
Limit >>= 12;
Entry->HighWord.Bits.Granularity = 1;
}
Entry->LimitLow = (USHORT)(Limit & 0xffff);
Entry->HighWord.Bits.LimitHi = ((Limit >> 16) & 0x0f);
}
VOID
KiSetGdtEntryEx(
IN OUT PKGDTENTRY Entry,
IN ULONG32 Base,
IN ULONG Limit,
IN UCHAR Type,
IN UCHAR Dpl,
IN BOOLEAN Granularity,
IN UCHAR SegMode) // 0: 16-bit, 1: 32-bit, 2: 64-bit
{
KiSetGdtDescriptorBase(Entry, Base);
KiSetGdtDescriptorLimit(Entry, Limit);
Entry->HighWord.Bits.Type = (Type & 0x1f);
Entry->HighWord.Bits.Dpl = (Dpl & 0x3);
Entry->HighWord.Bits.Pres = (Type != 0); // Present, must be 1 when the GDT entry is valid.
Entry->HighWord.Bits.Sys = 0; // System
Entry->HighWord.Bits.Reserved_0 = 0; // LongMode = !!(SegMode & 1);
Entry->HighWord.Bits.Default_Big = !!(SegMode & 2);
Entry->HighWord.Bits.Granularity |= !!Granularity; // The flag may have been already set by KiSetGdtDescriptorLimit().
// Entry->MustBeZero = 0;
}
FORCEINLINE
VOID
KiSetGdtEntry(
IN OUT PKGDTENTRY Entry,
IN ULONG32 Base,
IN ULONG Limit,
IN UCHAR Type,
IN UCHAR Dpl,
IN UCHAR SegMode) // 0: 16-bit, 1: 32-bit, 2: 64-bit
{
KiSetGdtEntryEx(Entry, Base, Limit, Type, Dpl, FALSE, SegMode);
}
#if 0
VOID
DumpGDTEntry(ULONG_PTR Base, ULONG Selector)