feat: DTB now populates VMBootMemoryMap structure.

2026-04-26 13:32:44 +04:00
parent a05b51fca3
commit 785a61b451
8 changed files with 109 additions and 14 deletions
@@ -0,0 +1,22 @@
+#include <VM/PMM.h>
+
+static inline Size BitmapGetByteIndex(Address address) {
+    return (address / kVMPageSize) / kVMBlocksPerByte;
+}
+
+static inline UInt8 BitmapGetBitOffset(Address address) {
+    return (UInt8)((address / kVMPageSize) % kVMBlocksPerByte);
+}
+
+static inline Boolean BitmapTest(const MemoryPointer bitmap, Address address) {
+    return (bitmap[BitmapGetByteIndex(address)] & (1U << BitmapGetBitOffset(address))) != 0;
+}
+
+static inline void BitmapSet(MemoryPointer bitmap, Address address) {
+    bitmap[BitmapGetByteIndex(address)] |= (1U << BitmapGetBitOffset(address));
+}
+
+static inline void BitmapUnset(MemoryPointer bitmap, Address address) {
+    bitmap[BitmapGetByteIndex(address)] &= ~(1U << BitmapGetBitOffset(address));
+}
+