valter/dosbox-staging
1
0
Fork 0
Code Releases Activity

New segments and no more default interrupt handles.

Browse source 
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@158
This commit is contained in:
Sjoerd van der Berg 2002-08-19 12:33:51 +00:00
parent 81b2a872fb
commit 2ae43c7636
1 changed files with 18 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
src/cpu/callback.cpp
View file

@ -52,13 +52,13 @@ Bitu CALLBACK_Allocate(void) {
void CALLBACK_Idle(void) {
/* this makes the cpu execute instructions to handle irq's and then come back */
Bit16u oldcs=Segs[cs].value;
Bit16u oldcs=SegValue(cs);
Bit32u oldeip=reg_eip;
SetSegment_16(cs,CB_SEG);
SegSet16(cs,CB_SEG);
reg_eip=call_idle<<4;
DOSBOX_RunMachine();
reg_eip=oldeip;
SetSegment_16(cs,oldcs);
SegSet16(cs,oldcs);
}
static Bitu default_handler(void) {
@ -74,40 +74,40 @@ static Bitu stop_handler(void) {
void CALLBACK_RunRealFar(Bit16u seg,Bit16u off) {
reg_sp-=4;
real_writew(Segs[es].value,reg_sp,call_stop<<4);
real_writew(Segs[es].value,reg_sp+2,CB_SEG);
mem_writew(SegPhys(ss)+reg_sp,call_stop<<4);
mem_writew(SegPhys(ss)+reg_sp+2,CB_SEG);
Bit32u oldeip=reg_eip;
Bit16u oldcs=Segs[cs].value;
Bit16u oldcs=SegValue(cs);
reg_eip=off;
SetSegment_16(cs,seg);
SegSet16(cs,seg);
DOSBOX_RunMachine();
reg_eip=oldeip;
SetSegment_16(cs,oldcs);
SegSet16(cs,oldcs);
}
void CALLBACK_RunRealInt(Bit8u intnum) {
Bit32u oldeip=reg_eip;
Bit16u oldcs=Segs[cs].value;
Bit16u oldcs=SegValue(cs);
reg_eip=call_stop<<4;
SetSegment_16(cs,CB_SEG);
SegSet16(cs,CB_SEG);
Interrupt(intnum);
DOSBOX_RunMachine();
reg_eip=oldeip;
SetSegment_16(cs,oldcs);
SegSet16(cs,oldcs);
}
void CALLBACK_SZF(bool val) {
Bit16u tempf=real_readw(Segs[ss].value,reg_sp+4) & 0xFFBF;
Bit16u tempf=mem_readw(SegPhys(ss)+reg_sp+4) & 0xFFBF;
Bit16u newZF=(val==true) << 6;
real_writew(Segs[ss].value,reg_sp+4,(tempf | newZF));
mem_writew(SegPhys(ss)+reg_sp+4,(tempf | newZF));
};
void CALLBACK_SCF(bool val) {
Bit16u tempf=real_readw(Segs[ss].value,reg_sp+4) & 0xFFFE;
Bit16u tempf=mem_readw(SegPhys(ss)+reg_sp+4) & 0xFFFE;
Bit16u newCF=(val==true);
real_writew(Segs[ss].value,reg_sp+4,(tempf | newCF));
mem_writew(SegPhys(ss)+reg_sp+4,(tempf | newCF));
};
@ -153,12 +153,15 @@ void CALLBACK_Init(void) {
real_writeb((Bit16u)CB_SEG,(call_idle<<4)+12,0xFE);
real_writeb((Bit16u)CB_SEG,(call_idle<<4)+13,0x38);
real_writew((Bit16u)CB_SEG,(call_idle<<4)+14,call_idle);
#if C_DEBUG
/* Setup all Interrupt to point to the default handler */
call_default=CALLBACK_Allocate();
CALLBACK_Setup(call_default,&default_handler,CB_IRET);
for (i=0;i<256;i++) {
real_writed(0,i*4,CALLBACK_RealPointer(call_default));
}
#endif
}