Implement HlHalt() intrinsic routine and add basic definitions for kernel services

xtldr/amd64/memory.c

@@ -91,7 +91,7 @@ BlEnablePaging(IN PLIST_ENTRY MemoryMappings,
 
     /* Map the stack */
     BlGetStackPointer(&Stack);
-    Status = BlAddVirtualMemoryMapping(MemoryMappings, Stack, Stack, XTOS_KERNEL_STACK_SIZE,
+    Status = BlAddVirtualMemoryMapping(MemoryMappings, Stack, Stack, KERNEL_STACK_SIZE,
                                                     LoaderOsloaderStack);
     if(Status != STATUS_EFI_SUCCESS)
     {

xtldr/i686/memory.c

@@ -101,7 +101,7 @@ BlEnablePaging(IN PLIST_ENTRY MemoryMappings,
         BlDbgPrint(L"Physical Address Extension (PAE) available\n");
 
         /* Calculate physical address based on KSEG0 base */
-        PhysicalAddress = (UINT_PTR)VirtualAddress - XTOS_VIRTUAL_MEMORY_AREA;
+        PhysicalAddress = (UINT_PTR)VirtualAddress - KSEG0_BASE;
 
         /* Iterate over all descriptors from memory map to find satisfying address for PDPT */
         for(Index = 0; Index < DescriptorCount; Index++)
@@ -142,7 +142,7 @@ BlEnablePaging(IN PLIST_ENTRY MemoryMappings,
         }
 
         /* Set virtual address based on new PDPT address mapped to KSEG0 base */
-        VirtualAddress = (void*)(UINT_PTR)(PDPTAddress + EFI_PAGE_SIZE + XTOS_VIRTUAL_MEMORY_AREA);
+        VirtualAddress = (void*)(UINT_PTR)(PDPTAddress + EFI_PAGE_SIZE + KSEG0_BASE);
 
         /* Set base page frame number */
         Address = 0x100000; // MEM_TOP_DOWN ?
@@ -191,7 +191,7 @@ BlEnablePaging(IN PLIST_ENTRY MemoryMappings,
 
     /* Map the stack */
     BlGetStackPointer(&Stack);
-    Status = BlAddVirtualMemoryMapping(MemoryMappings, Stack, Stack, XTOS_KERNEL_STACK_SIZE,
+    Status = BlAddVirtualMemoryMapping(MemoryMappings, Stack, Stack, KERNEL_STACK_SIZE,
                                                     LoaderOsloaderStack);
     if(Status != STATUS_EFI_SUCCESS)
     {

xtldr/xtldr.c

@@ -361,7 +361,7 @@ BlStartNewStack()
 
     /* Infinite bootloader loop */
     BlEfiPrint(L"System halted!");
-    for(;;);
+    HlHalt();
 
     /* Return success */
     return STATUS_EFI_SUCCESS;
@@ -437,12 +437,12 @@ BlStartXtLoader(IN EFI_HANDLE ImageHandle,
     BlEnumerateEfiBlockDevices();
 
     /* Create new bootloader stack */
-    BlCreateStack(&EfiLoaderStack, XTOS_KERNEL_STACK_SIZE, &BlStartNewStack);
+    BlCreateStack(&EfiLoaderStack, KERNEL_STACK_SIZE, &BlStartNewStack);
 
     /* Infinite bootloader loop */
     BlDbgPrint(L"ERROR: Unexpected exception occurred, probably did not create a new stack\n");
     BlEfiPrint(L"System halted!");
-    for(;;);
+    HlHalt();
 
     /* Return success */
     return STATUS_EFI_SUCCESS;