ent = (tMBoot_MMapEnt *)( (Uint)ent + ent->Size );
}
- // Get used page count
+ // Get used page count (Kernel)
kernelPages = (Uint)&gKernelEnd - KERNEL_BASE - 0x100000;
kernelPages += 0xFFF; // Page Align
kernelPages >>= 12;
int i, idx, sidx;
tPAddr ret;
+ ENTER("iPages iMaxBits", Pages, MaxBits);
+
// Sanity Checks
- if(MaxBits < 0) return 0;
+ if(MaxBits < 0) {
+ LEAVE('i', 0);
+ return 0;
+ }
if(MaxBits > PHYS_BITS) MaxBits = PHYS_BITS;
// Lock
b = idx % 32;
a = idx / 32;
+ #if 0
+ LOG("a=%i, b=%i, idx=%i, sidx=%i", a, b, idx, sidx);
+
// Find free page
- for( ; gaSuperBitmap[a] == -1 && a --; );
+ for( ; gaSuperBitmap[a] == -1 && a --; ) b = 31;
if(a < 0) {
RELEASE( &giPhysAlloc );
Warning("MM_AllocPhysRange - OUT OF MEMORY (Called by %p)", __builtin_return_address(0));
+ LEAVE('i', 0);
return 0;
}
- for( ; gaSuperBitmap[a] & (1 << b); b-- );
+ LOG("a = %i", a);
+ for( ; gaSuperBitmap[a] & (1 << b); b-- ) sidx = 31;
+ LOG("b = %i", b);
idx = a * 32 + b;
- for( ; gaPageBitmap[idx] & (1 << sidx); sidx-- );
+ for( ; gaPageBitmap[idx] & (1 << sidx); sidx-- )
+ LOG("gaPageBitmap[%i] = 0x%08x", idx, gaPageBitmap[idx]);
+
+ LOG("idx = %i, sidx = %i", idx, sidx);
+ #else
+
+ #endif
// Check if the gap is large enough
while( idx >= 0 )
if( idx < 0 ) {
RELEASE( &giPhysAlloc );
Warning("MM_AllocPhysRange - OUT OF MEMORY (Called by %p)", __builtin_return_address(0));
+ LEAVE('i', 0);
+ return 0;
}
// Mark pages used
gaPageReferences[idx*32+sidx] = 1;
gaPageBitmap[ idx ] |= 1 << sidx;
sidx ++;
- if(sidx == 32) { sidx = 0; idx ++; }
+ if(sidx == 32) { sidx = 0; idx ++; }
}
// Get address
// Release Spinlock
RELEASE( &giPhysAlloc );
+ LEAVE('X', ret);
return ret;
}