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Added mode "load" in dos_execute

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@489
This commit is contained in:
Ulf Wohlers 2002-11-08 14:13:31 +00:00
parent cc838f907e
commit 5a4c1e320a
1 changed files with 15 additions and 1 deletions
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16
src/dos/dos_execute.cpp
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@ -208,7 +208,7 @@ bool DOS_Execute(char * name,PhysPt block_pt,Bit8u flags) {
Bitu headersize,imagesize;
DOS_ParamBlock block(block_pt);
block.LoadData();
if (flags!=LOADNGO && flags!=OVERLAY) {
if (flags!=LOADNGO && flags!=OVERLAY && flags!=LOAD) {
E_Exit("DOS:Not supported execute mode %d for file %s",flags,name);
}
/* Check for EXE or COM File */
@ -302,6 +302,20 @@ bool DOS_Execute(char * name,PhysPt block_pt,Bit8u flags) {
csip=RealMake(loadseg+head.initCS,head.initIP);
sssp=RealMake(loadseg+head.initSS,head.initSP);
}
if (flags==LOAD) {
DOS_PSP callpsp(dos.psp);
/* Save the SS:SP on the PSP of calling program */
callpsp.SetStack(RealMakeSeg(ss,reg_sp));
/* Switch the psp's */
dos.psp=pspseg;
block.exec.initsssp = sssp;
block.exec.initcsip = csip;
block.SaveData();
return true;
}
if (flags==LOADNGO) {
/* Get Caller's program CS:IP of the stack and set termination address to that */
RealSetVec(0x22,RealMake(mem_readw(SegPhys(ss)+reg_sp+2),mem_readw(SegPhys(ss)+reg_sp)));