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system/x86_64: Add PAGE_SIZE to the vm file to be used by everyone

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This commit is contained in:
Gabriel 2025-03-07 17:54:35 +01:00
parent 02762336a0
commit 0bd80c93a2
1 changed files with 4 additions and 2 deletions
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6
system/lib/arch/x86_64/vm.zig
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@ -7,6 +7,8 @@ const MapError = error{
OutOfMemory, OutOfMemory,
}; };
pub const PAGE_SIZE = 4096;
pub const PhysFrame = struct { pub const PhysFrame = struct {
address: u64, address: u64,
@ -157,7 +159,7 @@ pub fn unmap(mapper: *const MemoryMapper, virt_address: u64) !PhysFrame {
return frame; return frame;
} }
pub fn getEntry(mapper: MemoryMapper, virt_address: u64) ?*PageTableEntry { pub fn getEntry(mapper: *const MemoryMapper, virt_address: u64) ?*PageTableEntry {
const indexes = calculatePageTableIndexes(virt_address); const indexes = calculatePageTableIndexes(virt_address);
const l4 = &mapper.directory.entries[indexes.level4]; const l4 = &mapper.directory.entries[indexes.level4];
if (l4.present == 0) return null; if (l4.present == 0) return null;
@ -176,7 +178,7 @@ pub fn getEntry(mapper: MemoryMapper, virt_address: u64) ?*PageTableEntry {
return l1; return l1;
} }
pub fn getPhysical(mapper: MemoryMapper, virt_address: u64) ?PhysFrame { pub fn getPhysical(mapper: *const MemoryMapper, virt_address: u64) ?PhysFrame {
const entry = getEntry(mapper, virt_address) orelse return null; const entry = getEntry(mapper, virt_address) orelse return null;
return PhysFrame{ .address = entry.getAddress() }; return PhysFrame{ .address = entry.getAddress() };