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New pagehandler option for different read and write pointers

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2439
This commit is contained in:
Sjoerd van der Berg 2006-01-30 09:47:04 +00:00
parent 5a601f5b35
commit c739745151
2 changed files with 15 additions and 8 deletions
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7
src/cpu/core_dyn_x86/cache.h
View file

@ -216,10 +216,13 @@ public:
}
return 0;
}
HostPt GetHostPt(Bitu phys_page) {
hostmem=old_pagehandler->GetHostPt(phys_page);
HostPt GetHostReadPt(Bitu phys_page) {
hostmem=old_pagehandler->GetHostReadPt(phys_page);
return hostmem;
}
HostPt GetHostWritePt(Bitu phys_page) {
return GetHostReadPt( phys_page );
}
public:
Bit8u write_map[4096];
CodePageHandler * next, * prev;

16
src/cpu/paging.cpp
View file

@ -67,6 +67,14 @@ void PageHandler::writed(PhysPt addr,Bitu val) {
writeb(addr+3,(Bit8u) (val >> 24));
};
HostPt PageHandler::GetHostReadPt(Bitu phys_page) {
return 0;
}
HostPt PageHandler::GetHostWritePt(Bitu phys_page) {
return 0;
}
bool PageHandler::readb_checked(PhysPt addr, Bitu * val) {
*val=readb(addr); return false;
}
@ -86,9 +94,6 @@ bool PageHandler::writed_checked(PhysPt addr,Bitu val) {
writed(addr,val); return false;
}
HostPt PageHandler::GetHostPt(Bitu phys_page) {
return 0;
}
struct PF_Entry {
@ -350,11 +355,10 @@ void PAGING_LinkPage(Bitu lin_page,Bitu phys_page) {
PAGING_ClearTLB();
}
HostPt host_mem=handler->GetHostPt(phys_page);
paging.tlb.phys_page[lin_page]=phys_page;
if (handler->flags & PFLAG_READABLE) paging.tlb.read[lin_page]=host_mem-lin_base;
if (handler->flags & PFLAG_READABLE) paging.tlb.read[lin_page]=handler->GetHostReadPt(phys_page)-lin_base;
else paging.tlb.read[lin_page]=0;
if (handler->flags & PFLAG_WRITEABLE) paging.tlb.write[lin_page]=host_mem-lin_base;
if (handler->flags & PFLAG_WRITEABLE) paging.tlb.write[lin_page]=handler->GetHostWritePt(phys_page)-lin_base;
else paging.tlb.write[lin_page]=0;
paging.links.entries[paging.links.used++]=lin_page;