move keyboard and mouse out of HAL into a standalone ps2.sys driver, implement usb stack with xhci controller discovery, hid keyboard/mouse, and bulk-only mass storage, add pci msi support with capability chain walking and software irq vector allocation (slots 16-23), rewrite user virtual memory as a USER_VA_REGION descriptor arena with per-process ownership tracking and guard page support, replacing the old bump allocator and top-down image region, add MmCreateUserRegion/MmDestroyAllUserRegions so process teardown reclaims all user va in one pass, allocate a pool-backed shadow framebuffer in hal_screen to fix cursor tearing and scroll corruption, reserve ap trampoline page below 1mb in uefi bootloader before boot services exit, rewrite memset/memcpy/memmove/memcmp with __stosq/__movsq intrinsics, promote driver flag literals to macros and add multi-tu STANDALONE_DRIVERS table to build.c, split rtl8139/rtl816x into header+source, rename KbReadScancode to KbReadKey, improve page fault output with MmDebugDescribeAddress and user region dump, fix %p to %016llX throughout.

code/user/apps/doom/PureDOOM.h

@@ -48439,7 +48439,7 @@ void Z_DumpHeap(int lowtag, int hightag)
 {
     memblock_t* block;
 
-    //doom_print("zone size: %i  location: %p\n",
+    //doom_print("zone size: %i  location: 0x%016llX\n",
     //       mainzone->size, mainzone);
     doom_print("zone size: ");
     doom_print(doom_itoa(mainzone->size, 10));
@@ -48459,7 +48459,7 @@ void Z_DumpHeap(int lowtag, int hightag)
     {
         if (block->tag >= lowtag && block->tag <= hightag)
         {
-            //doom_print("block:%p    size:%7i    user:%p    tag:%3i\n", block, block->size, block->user, block->tag);
+            //doom_print("block:0x%016llX    size:%7i    user:0x%016llX    tag:%3i\n", block, block->size, block->user, block->tag);
             doom_print("block");
             doom_print(doom_ptoa(block));
             doom_print("    size:");
@@ -48496,7 +48496,7 @@ void Z_FileDumpHeap(void* f)
 {
     memblock_t* block;
 
-    //fprintf(f, "zone size: %i  location: %p\n", mainzone->size, mainzone);
+    //fprintf(f, "zone size: %i  location: 0x%016llX\n", mainzone->size, mainzone);
     doom_fprint(f, "zone size: ");
     doom_fprint(f, doom_itoa(mainzone->size, 10));
     doom_fprint(f, "  location: ");
@@ -48505,7 +48505,7 @@ void Z_FileDumpHeap(void* f)
 
     for (block = mainzone->blocklist.next; ; block = block->next)
     {
-        //fprintf(f, "block:%p    size:%7i    user:%p    tag:%3i\n",
+        //fprintf(f, "block:0x%016llX    size:%7i    user:0x%016llX    tag:%3i\n",
         //        block, block->size, block->user, block->tag);
         doom_fprint(f, "block:");
         doom_fprint(f, doom_ptoa(block));