30 Sep 2006

Author: ion
Date: Sat Sep 30 09:42:22 2006
New Revision: 24306

URL: http://svn.reactos.org/svn/reactos?rev=24306&view=rev
Log:
- Fix some bugs in intrin.h (missing __inline__ statments in some locations, which were
causing warnings due to "static").
- Remove intrinsics in winddk.h since they're now properly done in intrin.h (thanks
KJK!!!)
- Make freeldr.c setup the boot KTSS like NTLDR does, so that the GDT entry for it is
valid (and remove the code that was doing this from Ki386InitializeTss)
- Refactor KiSystemStartup to use 100% dynamic pointers and machine data queried from the
Loader Block or actual GDT/IDT/Selectors in memory, isntead of hard-coded ntoskrnl
offsets. This makes it possible to be loaded by NTLDR, which sets these system structures
up by itself. (we do it in freeldr.c, as hacks).

Modified:
    trunk/reactos/include/ddk/winddk.h
    trunk/reactos/include/psdk/intrin.h
    trunk/reactos/ntoskrnl/include/internal/i386/ke.h
    trunk/reactos/ntoskrnl/include/internal/ke.h
    trunk/reactos/ntoskrnl/ke/freeldr.c
    trunk/reactos/ntoskrnl/ke/i386/cpu.c
    trunk/reactos/ntoskrnl/ke/i386/kiinit.c

Modified: trunk/reactos/include/ddk/winddk.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/include/ddk/winddk.h?rev=2…
==============================================================================

--- trunk/reactos/include/ddk/winddk.h (original)
+++ trunk/reactos/include/ddk/winddk.h Sat Sep 30 09:42:22 2006
@@ -10568,30 +10568,6 @@
 
 #endif
 
-#ifdef __GNUC__
-
-/* Available as intrinsics on MSVC */
-static __inline void _disable(void) {__asm__ __volatile__("cli\n");}
-static __inline void _enable(void)  {__asm__ __volatile__("sti\n");}
-
-static __inline ULONG64 __readcr3(void)
-{
-    ULONG_PTR Ret;
-    __asm__ __volatile__("movl %%cr3, %0;\n"
-        :"=r"(Ret));
-    return (ULONG64)Ret;
-}
-
-static __inline ULONG64 __readcr4(void)
-{
-    ULONG_PTR Ret;
-    __asm__ __volatile__("movl %%cr4, %0; \n"
-        :"=r"(Ret));
-    return (ULONG64)Ret;
-}
-
-#endif
-
 #ifdef __cplusplus
 }
 #endif

Modified: trunk/reactos/include/psdk/intrin.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/include/psdk/intrin.h?rev=…
==============================================================================
--- trunk/reactos/include/psdk/intrin.h (original)
+++ trunk/reactos/include/psdk/intrin.h Sat Sep 30 09:42:22 2006
@@ -609,20 +609,20 @@
 
 
 /*** Bit manipulation ***/
-static  __attribute__((always_inline)) unsigned char _BitScanForward(unsigned long *
const Index, const unsigned long Mask)
+static  __inline__ __attribute__((always_inline)) unsigned char _BitScanForward(unsigned
long * const Index, const unsigned long Mask)
 {
 	__asm__("bsfl %[Mask], %[Index]" : [Index] "=r" (*Index) : [Mask]
"mr" (Mask));
 	return Mask ? 1 : 0;
 }
 
-static  __attribute__((always_inline)) unsigned char _BitScanReverse(unsigned long *
const Index, const unsigned long Mask)
+static  __inline__ __attribute__((always_inline)) unsigned char _BitScanReverse(unsigned
long * const Index, const unsigned long Mask)
 {
 	__asm__("bsrl %[Mask], %[Index]" : [Index] "=r" (*Index) : [Mask]
"mr" (Mask));
 	return Mask ? 1 : 0;
 }
 
 /* NOTE: again, the bizarre implementation follows Visual C++ */
-static  __attribute__((always_inline)) unsigned char _bittest(const long * const a, const
long b)
+static  __inline__ __attribute__((always_inline)) unsigned char _bittest(const long *
const a, const long b)
 {
 	unsigned char retval;
 

Modified: trunk/reactos/ntoskrnl/include/internal/i386/ke.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/include/internal/…
==============================================================================
--- trunk/reactos/ntoskrnl/include/internal/i386/ke.h (original)
+++ trunk/reactos/ntoskrnl/include/internal/i386/ke.h Sat Sep 30 09:42:22 2006
@@ -56,9 +56,14 @@
 KiInitializeGdt(struct _KPCR* Pcr);
 VOID
 Ki386ApplicationProcessorInitializeTSS(VOID);
-VOID
-NTAPI
-Ki386InitializeTss(VOID);
+
+VOID
+FASTCALL
+Ki386InitializeTss(
+    IN PKTSS Tss,
+    IN PKIDTENTRY Idt
+);
+
 VOID
 KiGdtPrepareForApplicationProcessorInit(ULONG Id);
 VOID
@@ -203,6 +208,7 @@
 #define Ke386GetCr4()            _Ke386GetCr(4)
 #define Ke386SetCr4(X)           _Ke386SetCr(4,X)
 #define Ke386GetSs()             _Ke386GetSeg(ss)
+#define Ke386GetFs()             _Ke386GetSeg(fs)
 #define Ke386SetFs(X)            _Ke386SetSeg(fs, X)
 #define Ke386SetDs(X)            _Ke386SetSeg(ds, X)
 #define Ke386SetEs(X)            _Ke386SetSeg(es, X)

Modified: trunk/reactos/ntoskrnl/include/internal/ke.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/include/internal/…
==============================================================================
--- trunk/reactos/ntoskrnl/include/internal/ke.h (original)
+++ trunk/reactos/ntoskrnl/include/internal/ke.h Sat Sep 30 09:42:22 2006
@@ -807,6 +807,13 @@
     VOID
 );
 
+
+VOID
+NTAPI
+KiInitializeMachineType(
+    VOID
+);
+
 VOID
 NTAPI
 KiFlushNPXState(

Modified: trunk/reactos/ntoskrnl/ke/freeldr.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/freeldr.c?rev=…
==============================================================================
--- trunk/reactos/ntoskrnl/ke/freeldr.c (original)
+++ trunk/reactos/ntoskrnl/ke/freeldr.c Sat Sep 30 09:42:22 2006
@@ -87,10 +87,22 @@
     PIMAGE_OPTIONAL_HEADER OptHead;
     PLOADER_PARAMETER_BLOCK NtLoaderBlock;
     CHAR* s;
+    PKTSS Tss;
+    PKGDTENTRY TssEntry;
 
     /* Load the GDT and IDT */
     Ke386SetGlobalDescriptorTable(KiGdtDescriptor);
     Ke386SetInterruptDescriptorTable(KiIdtDescriptor);
+
+    /* Initialize the boot TSS */
+    Tss = &KiBootTss;
+    TssEntry = &KiBootGdt[KGDT_TSS / sizeof(KGDTENTRY)];
+    TssEntry->HighWord.Bits.Type = I386_TSS;
+    TssEntry->HighWord.Bits.Pres = 1;
+    TssEntry->HighWord.Bits.Dpl = 0;
+    TssEntry->BaseLow = (USHORT)((ULONG_PTR)Tss & 0xFFFF);
+    TssEntry->HighWord.Bytes.BaseMid = (UCHAR)((ULONG_PTR)Tss >> 16);
+    TssEntry->HighWord.Bytes.BaseHi = (UCHAR)((ULONG_PTR)Tss >> 24);
 
     /* Copy the Loader Block Data locally since Low-Memory will be wiped */
     memcpy(&KeRosLoaderBlock, LoaderBlock, sizeof(ROS_LOADER_PARAMETER_BLOCK));

Modified: trunk/reactos/ntoskrnl/ke/i386/cpu.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/i386/cpu.c?rev…
==============================================================================
--- trunk/reactos/ntoskrnl/ke/i386/cpu.c (original)
+++ trunk/reactos/ntoskrnl/ke/i386/cpu.c Sat Sep 30 09:42:22 2006
@@ -61,6 +61,7 @@
 ULONG MxcsrFeatureMask = 0;
 ULONG KeI386XMMIPresent = 0;
 ULONG KeI386FxsrPresent = 0;
+ULONG KeI386MachineType;
 ULONG Ke386Pae = FALSE;
 ULONG Ke386GlobalPagesEnabled = FALSE;
 ULONG Ke386NoExecute = FALSE;
@@ -549,33 +550,24 @@
 }
 
 VOID
-NTAPI
-Ki386InitializeTss(VOID)
-{
-    PKTSS Tss;
+FASTCALL
+Ki386InitializeTss(IN PKTSS Tss,
+                   IN PKIDTENTRY Idt)
+{
     PKGDTENTRY TssEntry;
     PKIDTENTRY TaskGateEntry;
     PKIDT_ACCESS TaskGateAccess;
 
     /* Initialize the boot TSS. */
-    Tss = &KiBootTss;
     TssEntry = &KiBootGdt[KGDT_TSS / sizeof(KGDTENTRY)];
     KiInitializeTSS2(Tss, TssEntry);
     KiInitializeTSS(Tss);
 
-    /* Initialize a descriptor for the TSS */
-    TssEntry->HighWord.Bits.Type = I386_TSS;
-    TssEntry->HighWord.Bits.Pres = 1;
-    TssEntry->HighWord.Bits.Dpl = 0;
-    TssEntry->BaseLow = (USHORT)((ULONG_PTR)Tss & 0xFFFF);
-    TssEntry->HighWord.Bytes.BaseMid = (UCHAR)((ULONG_PTR)Tss >> 16);
-    TssEntry->HighWord.Bytes.BaseHi = (UCHAR)((ULONG_PTR)Tss >> 24);
-
     /* Load the task register */
     Ke386SetTr(KGDT_TSS);
 
     /* Setup the Task Gate for Double Fault Traps */
-    TaskGateEntry = &KiIdt[8];
+    TaskGateEntry = &Idt[8];
     TaskGateAccess = (PKIDT_ACCESS)&TaskGateEntry->Access;
 #if 0
     TaskGateAccess->SegmentType = I386_TASK_GATE;
@@ -607,7 +599,7 @@
     TssEntry->LimitLow = KTSS_IO_MAPS;
 
     /* Now setup the NMI Task Gate */
-    TaskGateEntry = &KiIdt[2];
+    TaskGateEntry = &Idt[2];
     TaskGateAccess = (PKIDT_ACCESS)&TaskGateEntry->Access;
 #if 0
     TaskGateAccess->SegmentType = I386_TASK_GATE;
@@ -763,6 +755,14 @@
     Ke386GetLocalDescriptorTable(ProcessorState->SpecialRegisters.Ldtr);
 }
 
+VOID
+NTAPI
+KiInitializeMachineType(VOID)
+{
+    /* Set the Machine Type we got from NTLDR */
+    KeI386MachineType = KeLoaderBlock->u.I386.MachineType & 0x000FF;
+}
+
 /* PUBLIC FUNCTIONS **********************************************************/
 
 /*

Modified: trunk/reactos/ntoskrnl/ke/i386/kiinit.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/i386/kiinit.c?…
==============================================================================
--- trunk/reactos/ntoskrnl/ke/i386/kiinit.c (original)
+++ trunk/reactos/ntoskrnl/ke/i386/kiinit.c Sat Sep 30 09:42:22 2006
@@ -11,6 +11,7 @@
 #include <ntoskrnl.h>
 #define NDEBUG
 #include <debug.h>
+#include <intrin.h>
 
 /* GLOBALS *******************************************************************/
 
@@ -229,11 +230,56 @@
 
 VOID
 NTAPI
+KiGetMachineBootPointers(IN PKGDTENTRY *Gdt,
+                         IN PKIDTENTRY *Idt,
+                         IN PKIPCR *Pcr,
+                         IN PKTSS *Tss)
+{
+    KDESCRIPTOR GdtDescriptor, IdtDescriptor;
+    KGDTENTRY TssSelector, PcrSelector;
+    ULONG Tr, Fs;
+
+    /* Get GDT and IDT descriptors */
+    Ke386GetGlobalDescriptorTable(GdtDescriptor);
+    Ke386GetInterruptDescriptorTable(IdtDescriptor);
+
+    /* Save IDT and GDT */
+    *Gdt = (PKGDTENTRY)GdtDescriptor.Base;
+    *Idt = (PKIDTENTRY)IdtDescriptor.Base;
+
+    /* Get TSS and FS Selectors */
+    Ke386GetTr(&Tr);
+    if (Tr != KGDT_TSS) Tr = KGDT_TSS; // FIXME: HACKHACK
+    Fs = Ke386GetFs();
+
+    /* Get PCR Selector, mask it and get its GDT Entry */
+    PcrSelector = *(PKGDTENTRY)((ULONG_PTR)*Gdt + (Fs & ~RPL_MASK));
+
+    /* Get the KPCR itself */
+    *Pcr = (PKIPCR)(ULONG_PTR)(PcrSelector.BaseLow |
+                               PcrSelector.HighWord.Bytes.BaseMid << 16 |
+                               PcrSelector.HighWord.Bytes.BaseHi << 24);
+
+    /* Get TSS Selector, mask it and get its GDT Entry */
+    TssSelector = *(PKGDTENTRY)((ULONG_PTR)*Gdt + (Tr & ~RPL_MASK));
+
+    /* Get the KTSS itself */
+    *Tss = (PKTSS)(ULONG_PTR)(TssSelector.BaseLow |
+                              TssSelector.HighWord.Bytes.BaseMid << 16 |
+                              TssSelector.HighWord.Bytes.BaseHi << 24);
+}
+
+VOID
+NTAPI
 KiSystemStartup(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
 {
     ULONG Cpu;
-    PKIPCR Pcr = (PKIPCR)KPCR_BASE;
-    PKPRCB Prcb;
+    PKTHREAD InitialThread;
+    PVOID InitialStack;
+    PKGDTENTRY Gdt;
+    PKIDTENTRY Idt;
+    PKTSS Tss;
+    PKIPCR Pcr;
 
     /* Save the loader block and get the current CPU */
     KeLoaderBlock = LoaderBlock;
@@ -243,30 +289,47 @@
         /* If this is the boot CPU, set FS and the CPU Number*/
         Ke386SetFs(KGDT_R0_PCR);
         KeGetPcr()->Number = Cpu;
+
+        /* Set the initial stack and idle thread as well */
+        LoaderBlock->KernelStack = (ULONG_PTR)P0BootStack;
+        LoaderBlock->Thread = (ULONG_PTR)&KiInitialThread;
     }
+
+    /* Save the initial thread and stack */
+    InitialStack = (PVOID)LoaderBlock->KernelStack;
+    InitialThread = (PKTHREAD)LoaderBlock->Thread;
+
+    /* Clean the APC List Head */
+    InitializeListHead(&InitialThread->ApcState.ApcListHead[KernelMode]);
+
+    /* Initialize the machine type */
+    KiInitializeMachineType();
 
     /* Skip initial setup if this isn't the Boot CPU */
     if (Cpu) goto AppCpuInit;
 
-    /* Setup the boot (Freeldr should've done), double fault and NMI TSS */
-    Ki386InitializeTss();
+    /* Get GDT, IDT, PCR and TSS pointers */
+    KiGetMachineBootPointers(&Gdt, &Idt, &Pcr, &Tss);
+
+    /* Setup the TSS descriptors and entries */
+    Ki386InitializeTss(Tss, Idt);
 
     /* Initialize the PCR */
     RtlZeroMemory(Pcr, PAGE_SIZE);
     KiInitializePcr(Cpu,
                     Pcr,
-                    KiIdt,
-                    KiBootGdt,
-                    &KiBootTss,
-                    &KiInitialThread.Tcb,
+                    Idt,
+                    Gdt,
+                    Tss,
+                    InitialThread,
                     KiDoubleFaultStack);
 
     /* Set us as the current process */
-    KiInitialThread.Tcb.ApcState.Process = &KiInitialProcess.Pcb;
+    InitialThread->ApcState.Process = &KiInitialProcess.Pcb;
 
     /* Clear DR6/7 to cleanup bootloader debugging */
-    Pcr->PrcbData.ProcessorState.SpecialRegisters.KernelDr6 = 0;
-    Pcr->PrcbData.ProcessorState.SpecialRegisters.KernelDr7 = 0;
+    __writefsdword(KPCR_DR6, 0);
+    __writefsdword(KPCR_DR7, 0);
 
     /* Load Ring 3 selectors for DS/ES */
     Ke386SetDs(KGDT_R3_DATA | RPL_MASK);
@@ -274,11 +337,10 @@
 
     /* Setup CPU-related fields */
 AppCpuInit:
-    Prcb = Pcr->Prcb;
-    Pcr->Number = Cpu;
-    Pcr->SetMember = 1 << Cpu;
-    Pcr->SetMemberCopy = 1 << Cpu;
-    Prcb->SetMember = 1 << Cpu;
+    __writefsdword(KPCR_NUMBER, Cpu);
+    __writefsdword(KPCR_SET_MEMBER, 1 << Cpu);
+    __writefsdword(KPCR_SET_MEMBER_COPY, 1 << Cpu);
+    __writefsdword(KPCR_PRCB_SET_MEMBER, 1 << Cpu);
 
     /* Initialize the Processor with HAL */
     HalInitializeProcessor(Cpu, KeLoaderBlock);
@@ -296,11 +358,11 @@
     /* Raise to HIGH_LEVEL */
     KfRaiseIrql(HIGH_LEVEL);
 
-    /* Call main kernel intialization */
+    /* Call main kernel initialization */
     KiInitializeKernel(&KiInitialProcess.Pcb,
-                       &KiInitialThread.Tcb,
-                       P0BootStack,
-                       Prcb,
+                       InitialThread,
+                       InitialStack,
+                       &Pcr->PrcbData, //(PKPRCB)__readfsdword(KPCR_PRCB),
                        Cpu,
                        LoaderBlock);
 
@@ -314,4 +376,3 @@
     KiIdleLoop();
 }
 
-



    