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Fix correct releasing of paging links

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new phys_read/write functions


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1474
This commit is contained in:
Sjoerd van der Berg 2003-12-03 14:01:11 +00:00
parent 3655cc0cc6
commit f90b1c310d
1 changed files with 16 additions and 1 deletions
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17
src/hardware/memory.cpp
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@ -40,7 +40,7 @@ struct AllocBlock {
};
struct LinkBlock {
Bit8u used;
Bitu used;
Bit32u pages[MAX_LINKS];
};
@ -156,6 +156,7 @@ void MEM_SetPageHandler(Bitu phys_page,Bitu pages,PageHandler * handler) {
void MEM_UnlinkPages(void) {
PAGING_ClearTLBEntries(memory.links.used,memory.links.pages);
memory.links.used=0;
}
Bitu mem_strlen(PhysPt pt) {
@ -495,6 +496,8 @@ void phys_writed(PhysPt addr,Bit32u val) {
Bit32u MEM_PhysReadD(Bitu addr) {
Bitu page=addr >> 12;
Bitu index=(addr & 4095);
if (page>memory.pages)
E_Exit("Reading from illegal page");
HostPt block=memory.hostpts[page];
if (!block) {
E_Exit("Reading from empty page");
@ -502,6 +505,18 @@ Bit32u MEM_PhysReadD(Bitu addr) {
return host_readd(block+index);
}
void MEM_PhysWriteD(Bitu addr,Bit32u val) {
Bitu page=addr >> 12;
Bitu index=(addr & 4095);
if (page>memory.pages)
E_Exit("Writing from illegal page");
HostPt block=memory.hostpts[page];
if (!block) {
E_Exit("Writing to empty page");
}
host_writed(block+index,val);
}
static void write_p92(Bit32u port,Bit8u val) {
// Bit 0 = system reset (switch back to real mode)