ISR0 added

git-svn-id: https://spexeah.com:8443/svn/Asuro@39 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c

src/idt.pas

@@ -5,6 +5,12 @@ interface
 uses
     util;
 
+const
+     ISR_RING_0 = $8E;
+     ISR_RING_1 = $AE;
+     ISR_RING_2 = $CE;
+     ISR_RING_3 = $EE;
+
 type
     TIDT_Entry = bitpacked record
         base_low  : uint16;

src/isr.pas

@@ -3,29 +3,15 @@ unit isr;
 interface
 
 uses
-    idt,
-    console,
-    util;
+    ISR0;
 
 procedure init();
 
 implementation
 
-procedure CLI(); assembler; nostackframe;
-asm
-    CLI
-end;
-
-procedure isr0(); interrupt;
-begin
-    CLI;
-    console.writestringln('Divide by Zero Exception.');
-    util.halt_and_catch_fire;
-end;
-
 procedure init();
 begin
-    idt.set_gate(0, uint32(@isr0), $08, ISR_RING_0);
+    ISR0.register();
 end;
 
 end.

src/system.pas

@@ -2,12 +2,6 @@ unit system;
 
 interface
 
-const
-     ISR_RING_0 = $8E;
-     ISR_RING_1 = $AE;
-     ISR_RING_2 = $CE;
-     ISR_RING_3 = $EE;
-
 type
     //internal types
     cardinal = 0..$FFFFFFFF;

src/util.pas

@@ -4,6 +4,7 @@ unit util;
 
 interface
 
+procedure CLI();
 function hi(b : uint8) : uint8;
 function lo(b : uint8) : uint8;
 function switchendian(b : uint8) : uint8;
@@ -28,6 +29,11 @@ begin
      lo:= b AND $0F;
 end;
 
+procedure CLI(); assembler; nostackframe;
+asm
+    CLI
+end;
+
 function switchendian(b : uint8) : uint8; [public, alias: 'util_switchendian'];
 begin
      switchendian:= (lo(b) SHL 4) OR hi(b);