Implement HlClearInterruptFlag() and HlSetInterruptFlag() intrinsic routines

sdk/xtdk/amd64/hlfuncs.h

@@ -18,6 +18,10 @@
 extern ULONG ComPortAddress[];
 
 /* HAL library routines forward references */
+XTCDECL
+VOID
+HlClearInterruptFlag();
+
 XTCDECL
 BOOLEAN
 HlCpuId(IN OUT PCPUID_REGISTERS Registers);
@@ -39,6 +43,10 @@ XTCDECL
 ULONG_PTR
 HlReadControlRegister(IN USHORT ControlRegister);
 
+XTCDECL
+VOID
+HlSetInterruptFlag();
+
 XTCDECL
 VOID
 HlWriteControlRegister(IN USHORT ControlRegister,

sdk/xtdk/i686/hlfuncs.h

@@ -18,6 +18,10 @@
 extern ULONG ComPortAddress[];
 
 /* HAL library routines forward references */
+XTCDECL
+VOID
+HlClearInterruptFlag();
+
 XTCDECL
 BOOLEAN
 HlCpuId(IN OUT PCPUID_REGISTERS Registers);
@@ -39,6 +43,10 @@ XTCDECL
 ULONG_PTR
 HlReadControlRegister(IN USHORT ControlRegister);
 
+XTCDECL
+VOID
+HlSetInterruptFlag();
+
 XTCDECL
 VOID
 HlWriteControlRegister(IN USHORT ControlRegister,

xtldr/xtldr.c

@@ -380,6 +380,7 @@ BlStartNewStack()
 
     /* Infinite bootloader loop */
     BlEfiPrint(L"System halted!");
+    HlClearInterruptFlag();
     HlHalt();
 
     /* Return success */
@@ -461,6 +462,7 @@ BlStartXtLoader(IN EFI_HANDLE ImageHandle,
     /* Infinite bootloader loop */
     BlDbgPrint(L"ERROR: Unexpected exception occurred, probably did not create a new stack\n");
     BlEfiPrint(L"System halted!");
+    HlClearInterruptFlag();
     HlHalt();
 
     /* Return success */

xtoskrnl/hl/amd64/cpufunc.c

@@ -9,6 +9,20 @@
 #include "xtkmapi.h"
 
 
+/**
+ * Instructs the processor to clear the interrupt flag.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+HlClearInterruptFlag()
+{
+    asm volatile("cli");
+}
+
 /**
  * Retrieves a various amount of information about the CPU.
  *
@@ -176,6 +190,20 @@ HlReadControlRegister(IN USHORT ControlRegister)
     return Value;
 }
 
+/**
+ * Instructs the processor to set the interrupt flag.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+HlSetInterruptFlag()
+{
+    asm volatile("sti");
+}
+
 /**
  * Writes a value to the specified CPU control register.
  *

xtoskrnl/hl/i686/cpufunc.c

@@ -9,6 +9,20 @@
 #include "xtkmapi.h"
 
 
+/**
+ * Instructs the processor to clear the interrupt flag.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+HlClearInterruptFlag()
+{
+    asm volatile("cli");
+}
+
 /**
  * Retrieves a various amount of information about the CPU.
  *
@@ -170,6 +184,20 @@ HlReadControlRegister(IN USHORT ControlRegister)
     return Value;
 }
 
+/**
+ * Instructs the processor to set the interrupt flag.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+HlSetInterruptFlag()
+{
+    asm volatile("sti");
+}
+
 /**
  * Writes a value to the specified CPU control register.
  *