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move callbacks into read-only memory (Pinball/Adventure construction kit booters)

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2612
This commit is contained in:
Sebastian Strohhäcker 2006-04-22 15:25:45 +00:00
parent 1d11c37e23
commit 1d89346c16
8 changed files with 131 additions and 140 deletions
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15
include/callback.h
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: callback.h,v 1.16 2006-02-09 11:47:47 qbix79 Exp $ */
/* $Id: callback.h,v 1.17 2006-04-22 15:25:44 c2woody Exp $ */
#ifndef DOSBOX_CALLBACK_H
#define DOSBOX_CALLBACK_H
@ -28,10 +28,10 @@
typedef Bitu (*CallBack_Handler)(void);
extern CallBack_Handler CallBack_Handlers[];
enum { CB_RETN, CB_RETF,CB_IRET,CB_IRET_STI };
enum { CB_RETN,CB_RETF,CB_IRET,CB_IRETD,CB_IRET_STI,CB_IRET_EOI_PIC1,CB_HOOKABLE };
#define CB_MAX 144
#define CB_SEG 0xC800
#define CB_SEG 0xF100
#define CB_BASE (CB_SEG << 4)
enum {
@ -42,6 +42,9 @@ extern Bit8u lastint;
INLINE RealPt CALLBACK_RealPointer(Bitu callback) {
return RealMake(CB_SEG,callback << 4);
}
INLINE PhysPt CALLBACK_PhysPointer(Bitu callback) {
return PhysMake(CB_SEG,callback << 4);
}
Bitu CALLBACK_Allocate();
@ -52,8 +55,7 @@ void CALLBACK_RunRealInt(Bit8u intnum);
void CALLBACK_RunRealFar(Bit16u seg,Bit16u off);
bool CALLBACK_Setup(Bitu callback,CallBack_Handler handler,Bitu type,const char* description=0);
/* Returns with the size of the extra callback */
Bitu CALLBACK_SetupExtra(Bitu callback, Bitu type, PhysPt physAddress);
Bitu CALLBACK_Setup(Bitu callback,CallBack_Handler handler,Bitu type,PhysPt addr,const char* descr);
const char* CALLBACK_GetDescription(Bitu callback);
bool CALLBACK_Free(Bitu callback);
@ -78,7 +80,8 @@ public:
CALLBACK_HandlerObject():installed(false),m_type(NONE){vectorhandler.installed=false;}
~CALLBACK_HandlerObject();
//Install and allocate a callback.
void Install(CallBack_Handler handler,Bitu type,const char* description=0);
void Install(CallBack_Handler handler,Bitu type,const char* description);
void Install(CallBack_Handler handler,Bitu type,PhysPt addr,const char* description);
//Only allocate a callback number
void Allocate(CallBack_Handler handler,const char* description=0);
Bit16u Get_callback(){return m_callback;}