Make finishing touches before UEFI addition

As legacy BIOS isn't as straightforward to develop using a modern
system, modern emulators/VMs and virtual machine firmware, it was
decided to start work on an UEFI version of the Nightloader.

This commit leaves the not-yet boot-capable, but as far as it's
there already assembling and working legacy BIOS code behind for
later work on this edition.

i386/loader/src-asm/drivers/manager.asm

@@ -73,4 +73,3 @@ setup_drivers:
     ret
 
 %include "drivers/pci/driver.asm"
-%include "drivers/acpi/driver.asm"

i386/loader/src-asm/entry.asm

@@ -18,7 +18,7 @@ stage_2_setup_entry:
     cli
 
     mov ah, 0x00
-    mov al, 0x03 ;0x13
+    mov al, 0x03 ; 0x13 for graphics, 0x03 for text.
     int 0x10
 
 .check_a20:
@@ -51,19 +51,15 @@ stage_2_setup_entry:
 %include "memory/a20.asm"
 %include "memory/gdt.asm"
 
-
-
 bits 32
-stage2_true_entry:
-    push ebp
-    mov ebp, esp
-    call setup_drivers
-    mov esp, ebp
-    pop ebp
+stage2_protected_entry:
 
     cli
     hlt
 
+.buffer:
+    dd 0
+
 %include "utility/math.asm"
 %include "utility/memory.asm"
 %include "utility/display.asm"

i386/loader/src-asm/memory/gdt.asm

@@ -286,7 +286,7 @@ bits 32
     mov ebx, [esi + (64 - 8)]
     mov eax, [esi + (64 - 4)]
 
-    jmp dword stage2_true_entry
+    jmp dword stage2_protected_entry
 
 align 16
 .gdtr:

i386/loader/src-asm/utility/memory.asm

@@ -65,32 +65,31 @@ mem_equal:
     mov [esi + (32 - 16)], edi
 
 .body:
-    mov edx, [ebp - 4]      ; Block 1
-    mov edi, [ebp - 8]      ; Block 2
     xor eax, eax            ; Current Byte Offset
 
-.body.compare_loop:
-
+.comparison_loop:
+    mov edx, [ebp - 4]      ; Block 1
     mov ebx, edx
     add ebx, eax
     mov dl, [ebx]
 
+    mov edi, [ebp - 8]      ; Block 2
     mov ebx, edi
     add ebx, eax
     mov dh, [ebx]
 
     inc eax
     cmp dl, dh
-    je .body.compare_loop.condition
+    je .length_condition
 
     ; On NOT equal
     xor eax, eax
     jmp .epilog
 
-.body.compare_loop.condition:
+.length_condition:
     inc eax
     cmp eax, [ebp - 12]
-    jb .body.compare_loop
+    jb .comparison_loop
     mov eax, 1
 
 .epilog:

i386/run.bash

@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
 
-qemu-system-i386 nightloader.bin -qmp unix:qmp.socket,server,nowait
+qemu-system-x86_64 -m 512M -enable-kvm -d guest_errors nightloader.bin -qmp unix:qmp.socket,server,nowait