X-Git-Url: https://git.wirehaze.ovh/BOS.git/blobdiff_plain/9eee6999d9d27301b73f604c9978677c9794d717..359bb65a0ed9dbb75a208db4675db689877a85b9:/kernel/init/bios.asm

diff --git a/kernel/init/bios.asm b/kernel/init/bios.asm
index ed5716d..8ecad9f 100755
--- a/kernel/init/bios.asm
+++ b/kernel/init/bios.asm
@@ -8,100 +8,99 @@
 
 
 rmode_int:
-	  pushad
-	  push	  eax
-	  shr	  eax, 16			      ; move high bits to ax
-	  mov	  word [realmode_ax], ax	      ; save new ax value
-	  pop	  eax				      ; restore
-
-	  push	  ebx
-	  shr	  ebx, 16			      ; move high bits to bx
-	  mov	  byte [int_number], bl 	      ; save int number to call
-	  pop	  ebx
-
-	  mov	  byte [realmode_error], 0	      ; all variables is in the
-	  mov	  word [realmode_bx], bx	      ; realmode/variables.inc file
-	  mov	  word [realmode_cx], cx
-	  mov	  word [realmode_dx], dx
-	  call	  disable_irqs
-	  jmp	  pword 0x18:do_16pmode       ; must substract 0x10000 from
-						      ; data addresses becasue of
-						      ; fasm strict "org" behavior
+        pushad
+        push   eax
+        shr    eax, 16                                ; move high bits to ax
+        mov    word [realmode_ax], ax                 ; save new ax value
+        pop    eax                                    ; restore
+
+        push   ebx
+        shr    ebx, 16                                ; move high bits to bx
+        mov    byte [int_number], bl                  ; save int number to call
+        pop    ebx
+
+        mov    byte [realmode_error], 0               ; all variables is in the
+        mov    word [realmode_bx], bx                 ; realmode/variables.inc file
+        mov    word [realmode_cx], cx
+        mov    word [realmode_dx], dx
+        call   disable_irqs
+        jmp    pword 0x18:do_16pmode                  ; begin our dark journey into 16bit-land
+
 use16
 do_16pmode:
-	  mov	  ax, 0x20
-	  mov	  ds, ax
-	  mov	  es, ax
-	  mov	  fs, ax
-	  mov	  gs, ax
-	  mov	  ss, ax
+        mov    ax, 0x20
+        mov    ds, ax
+        mov    es, ax
+        mov    fs, ax
+        mov    gs, ax
+        mov    ss, ax
 
-	  cli
-	  mov	  eax, cr0
-	  and	  al, 0xFE
-	  mov	  cr0, eax
+        cli
+        mov    eax, cr0
+        and    al, 0xFE
+        mov    cr0, eax
 
-	  jmp	  0x1000:(do_realm)
+        jmp    0x0000:(do_realm)                      ; this should be triple checked!
 
 do_realm:
-	  mov	  ax, cs
-	  mov	  ds, ax
+        mov    ax, cs
+        mov    ds, ax
 
-	  xor	  ax, ax
-	  mov	  es, ax
-	  mov	  fs, ax
-	  mov	  gs, ax
-	  mov	  ss, ax
+        xor    ax, ax
+        mov    es, ax
+        mov    fs, ax
+        mov    gs, ax
+        mov    ss, ax
 
-	  lidt	  [ridtr]		      ; realmode/variables.inc
-	  sti
+        lidt   [ridtr]                                ; realmode/variables.inc
+        sti
 
-	  mov	  ax, word [realmode_ax]
-	  mov	  bx, word [realmode_bx]
-	  mov	  cx, word [realmode_cx]
-	  mov	  dx, word [realmode_dx]
+        mov    ax, word [realmode_ax]
+        mov    bx, word [realmode_bx]
+        mov    cx, word [realmode_cx]
+        mov    dx, word [realmode_dx]
 
-	  push	  ax				      ; this is some cool shit.. ;)
-	  mov	  al, [int_number]	      ; interrupt to preform
-	  mov	  [$+5], al		      ; move it to right pos.
-	  pop	  ax
-	  db	  0xCD				      ; opcode for int.
-	  db	  0x00				      ; move int_number here
+        push   ax                                     ; this is some cool shit.. ;)
+        mov    al, [int_number]                       ; interrupt to preform
+        mov    [$+5], al                              ; move it to right pos.
+        pop    ax
+        db     0xCD                                   ; opcode for int.
+        db     0x00                                   ; move int_number here
 
-	  jnc	  .no_error
-	  mov	  byte [realmode_error], 1
+        jnc    .no_error
+        mov    byte [realmode_error], 1
 
-     .no_error:
-	  mov	  word [realmode_ax], ax
-	  mov	  word [realmode_bx], bx
-	  mov	  word [realmode_cx], cx
-	  mov	  word [realmode_dx], dx
+    .no_error:
+        mov    word [realmode_ax], ax
+        mov    word [realmode_bx], bx
+        mov    word [realmode_cx], cx
+        mov    word [realmode_dx], dx
 
-	  cli
+        cli
 
-	  lgdt	  [gdtr]
-	  lidt	  [idtr]
-	  mov	  eax, cr0
-	  or	  al, 1
-	  mov	  cr0, eax
+        lgdt   [gdtr]
+        lidt   [idtr]
+        mov    eax, cr0
+        or     al, 1
+        mov    cr0, eax
 
-	  jmp	  pword 0x08:gobackto_pm
+        jmp    pword 0x08:gobackto_pm
 
 
 use32
 gobackto_pm:
-	  mov	  ax, 0x10			      ; refresh all segment registers
-	  mov	  ds, ax
-	  mov	  es, ax
-	  mov	  fs, ax
-	  mov	  gs, ax
-	  mov	  ss, ax
-	  call	  enable_irqs
-	  sti
-	  popad
-	  clc					      ; clear carry.
-	  cmp	  [realmode_error], 1		      ; if error, then
-	  jne	  .end
-	  stc					      ; set carry.
-     .end:
-	  ret
\ No newline at end of file
+        mov    ax, 0x10                               ; refresh all segment registers
+        mov    ds, ax
+        mov    es, ax
+        mov    fs, ax
+        mov    gs, ax
+        mov    ss, ax
+        call   enable_irqs
+        sti
+        popad
+        clc                                           ; clear carry.
+        cmp    [realmode_error], 1                    ; if error, then
+        jne    .end
+        stc                                           ; set carry.
+    .end:
+        ret
\ No newline at end of file