Control register bit flags added

src/Doc/Tips.DD

@@ -69,7 +69,7 @@ $FG,2$Merge(\"C:/*\",\"D:/*\",\"+r+d\");$FG$ to check my changes.
 
 * Use $FG,2$<CTRL-ALT-a>$FG$ to enter an extended ASCII char.
 
-* Use $FG,2$<CTRL-ALT-f>$FG$ to toggle between $LK,"VGA ROM Font",A="MN:SYS_FONT_PTR"$ and $LK,"Std Font",A="FI:::/Kernel/FontStd.CC"$
+* Use $FG,2$<CTRL-ALT-f>$FG$ to toggle between $LK,"VGA ROM Font",A="MN:SYS_FONT_PTR"$ and $LK,"Std Font",A="FI:::/Kernel/FontStd.CC"$.
 
 * Use $FG,2$<CTRL-ALT-s>$FG$ will capture the screen as a sprite on the clip.  You can save the cmd line doc as text with $FG,2$<CTRL-a>$FG$.
 

src/Kernel/KStart64.CC

@@ -2,6 +2,16 @@ asm {
 USE64
 	BTS	U32 [SYS_RUN_LEVEL],RLf_64BIT
 
+//Set required bits for SSE instruction execution
+	MOV_RAX_CR4
+	BTS	RAX,CR4f_OSFXSR
+	MOV_CR4_RAX
+
+	MOV_EAX_CR0
+	BTR	RAX,CR0f_EM
+	BTR	RAX,CR0f_MP
+	BTS	RAX,CR0f_NE
+	MOV_CR0_EAX
 	FNINIT
 	MOV	RAX,SYS_FIXED_AREA+CSysFixedArea.init_fpu_mmx
 	FXSAVE	U64 [RAX]
@@ -43,8 +53,8 @@ USE64
 USE32
 SYS_ENTER_LONG_MODE:: //Switch to long 64-bit mode
 	MOV_EAX_CR4
-	OR	EAX,0xB0
-	MOV_CR4_EAX
+	OR	EAX, CR4F_PAE | CR4F_PGE
+	MOV_CR4_EAX
 
 	MOV	EAX,[MEM_PML4]
 	MOV_CR3_EAX

src/Kernel/KernelA.HH

@@ -495,6 +495,29 @@ class CKernel
 #define RLF_ONCE_USER		(1<<RLf_ONCE_USER)
 
 #help_index "Processor"
+//Control register flag bits
+#define CR0f_MP		1 //Monitor coprocessor
+#define CR0f_EM		2 //Emulation of coprocessor
+#define CR0f_TS		3 //Task switched, some irrelevant x87 task management stuff
+#define CR0f_NE		5 //Numeric error
+#define CR0f_PG		31//Enable paging
+
+#define CR4f_PAE	5 //Physical Address Extension, required by long mode
+#define CR4f_PGE	7 //Page-Global Enable
+#define CR4f_OSFXSR	9 //FXSAVE/FXRSTOR support enabled
+
+#define CR4F_PAE	(1<<CR4f_PAE)
+#define CR4F_PGE	(1<<CR4f_PGE)
+#define CR4F_OSFXSR	(1<<CR4f_OSFXSR)
+
+//Model specific regs.
+#define IA32F_SCE	0x001
+#define IA32F_LME	0x100
+#define IA32_LAPIC_BASE	0x01B
+#define IA32_EFER	0xC0000080
+#define IA32_FS_BASE	0xC0000100
+#define IA32_GS_BASE	0xC0000101
+
 //Programmable Interrupt Controller
 #define PIC1		0x20
 #define PIC1_DATA	0x21
@@ -542,14 +565,6 @@ class CKernel
 #define IOAPICARB		0x02
 #define IOREDTAB		0x10
 
-//Model specific regs.
-#define IA32F_SCE	0x001
-#define IA32F_LME	0x100
-#define IA32_LAPIC_BASE	0x01B
-#define IA32_EFER	0xC0000080
-#define IA32_FS_BASE	0xC0000100
-#define IA32_GS_BASE	0xC0000101
-
 class CAP16BitInit
 {//AP Multicore
   U32	jmp;

src/Kernel/PCIBIOS.CC

@@ -97,7 +97,7 @@ USE32
 	WBINVD
 //disable paging
 	MOV_EAX_CR0
-	BTR	EAX,31
+	BTR	EAX,CR0f_PG
 	MOV_CR0_EAX
 
 	MOV	ECX,IA32_EFER
@@ -138,7 +138,7 @@ C32_ADD:: DU32	0;
 USE64	MOV	RSP,U64 [C32_RSP]
 	POP	RAX
 	CALL	SET_GS_BASE
-	POP	RAX
+	POP	RAX
 	CALL	SET_FS_BASE
 
 	POPFD