88 lines
1.8 KiB
ObjectPascal
88 lines
1.8 KiB
ObjectPascal
{ ************************************************
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* Asuro
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* Unit: Drivers/ISR13
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* Description: General Protection Fault
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************************************************
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* Author: K Morris
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* Contributors:
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************************************************ }
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unit isr13;
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interface
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uses
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util,
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console,
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isr_types,
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IDT;
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procedure register();
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procedure hook(hook_method : uint32);
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procedure unhook(hook_method : uint32);
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implementation
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var
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Hooks : Array[1..MAX_HOOKS] of pp_hook_method;
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procedure Main(); interrupt;
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var
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i : uint32;
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Regs : PRegisters;
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begin
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CLI;
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asm
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MOV EAX, EBP
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MOV Regs, EAX
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end;
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for i:=0 to MAX_HOOKS-1 do begin
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if uint32(Hooks[i]) <> 0 then Hooks[i](void(13));
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end;
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console.writestringln('General Protection Fault.');
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console.writestring('Flags: ');
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console.writehexln(Regs^.EFlags);
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console.writestring('EIP: ');
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console.writehexln(Regs^.EIP);
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console.writestring('CS: ');
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console.writehexln(Regs^.CS);
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console.writestring('Error Code: ');
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console.writehexln(Regs^.ErrorCode);
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Regs^.EIP:= Regs^.EIP - 2;
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//util.halt_and_catch_fire;
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end;
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procedure register();
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begin
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memset(uint32(@Hooks[0]), 0, sizeof(pp_hook_method)*MAX_HOOKS);
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IDT.set_gate(13, uint32(@Main), $08, ISR_RING_0);
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end;
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procedure hook(hook_method : uint32);
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var
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i : uint32;
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begin
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for i:=0 to MAX_HOOKS-1 do begin
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if uint32(Hooks[i]) = hook_method then exit;
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end;
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for i:=0 to MAX_HOOKS-1 do begin
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if uint32(Hooks[i]) = 0 then begin
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Hooks[i]:= pp_hook_method(hook_method);
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exit;
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end;
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end;
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end;
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procedure unhook(hook_method : uint32);
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var
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i : uint32;
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begin
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for i:=0 to MAX_HOOKS-1 do begin
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If uint32(Hooks[i]) = hook_method then Hooks[i]:= nil;
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exit;
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end;
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end;
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end. |