MM_int_SetPageInfo(VAddr, &pi);
}
+int MM_IsValidBuffer(tVAddr Addr, size_t Size)
+{
+ tMM_PageInfo pi;
+ int bUser = 0;
+
+ Size += Addr & (PAGE_SIZE-1);
+ Addr &= ~(PAGE_SIZE-1);
+
+ if( MM_int_GetPageInfo(Addr, &pi) ) return 0;
+ Addr += PAGE_SIZE;
+
+ if(pi.AP != AP_KRW_ONLY && pi.AP != AP_KRO_ONLY)
+ bUser = 1;
+
+ while( Size >= PAGE_SIZE )
+ {
+ if( MM_int_GetPageInfo(Addr, &pi) )
+ return 0;
+ if(bUser && (pi.AP == AP_KRW_ONLY || pi.AP == AP_KRO_ONLY))
+ return 0;
+ Addr += PAGE_SIZE;
+ Size -= PAGE_SIZE;
+ }
+
+ return 1;
+}
+
int MM_Map(tVAddr VAddr, tPAddr PAddr)
{
tMM_PageInfo pi = {0};
if( MM_int_GetPageInfo(ret, &pi) == 0 )
continue;
- Log("MapTemp %P at %p by %p", PAddr, ret, __builtin_return_address(0));
+// Log("MapTemp %P at %p by %p", PAddr, ret, __builtin_return_address(0));
MM_RefPhys(PAddr); // Counter the MM_Deallocate in FreeTemp
MM_Map(ret, PAddr);
int i = 0, inRange=0;
pi_old.Size = 0;
+ pi_old.AP = 0;
+ pi_old.PhysAddr = 0;
Debug("Page Table Dump (%p to %p):", Start, End);
range_start = Start;
Debug("Done");
}
-// NOTE: Runs in abort context, not much differe, just a smaller stack
+// NOTE: Runs in abort context, not much difference, just a smaller stack
void MM_PageFault(Uint32 PC, Uint32 Addr, Uint32 DFSR, int bPrefetch)
{
int rv;
for(;;);
}
+ #if TRACE_COW
Log_Notice("MMVirt", "COW %p caused by %p, ZERO duped to %P (RefCnt(%i)--)", Addr, PC,
newpage, MM_GetRefCount(pi.PhysAddr));
+ #endif
MM_DerefPhys(pi.PhysAddr);
pi.PhysAddr = newpage;
memcpy( dst, src, PAGE_SIZE );
MM_FreeTemp( (tVAddr)dst );
+ #if TRACE_COW
Log_Notice("MMVirt", "COW %p caused by %p, %P duped to %P (RefCnt(%i)--)", Addr, PC,
pi.PhysAddr, newpage, MM_GetRefCount(pi.PhysAddr));
+ #endif
MM_DerefPhys(pi.PhysAddr);
pi.PhysAddr = newpage;
}
+ #if TRACE_COW
else {
Log_Notice("MMVirt", "COW %p caused by %p, took last reference to %P",
Addr, PC, pi.PhysAddr);
}
+ #endif
// Unset COW
pi.AP = AP_RW_BOTH;
MM_int_SetPageInfo(Addr, &pi);