1 files changed, 35 insertions, 0 deletions
diff --git a/hikari/paging/constants.zig b/hikari/paging/constants.zig
new file mode 100644
index 0000000..73a4b53
--- /dev/null
+++ b/hikari/paging/constants.zig
@@ -0,0 +1,35 @@
+//! Hikari Paging Constants
+
+pub const page_size: u64 = 4096;
+pub const page_shift: u6 = 12;
+
+pub const entries_per_table: u64 = 512;
+pub const entry_shift: u6 = 9;
+
+pub const pml4_shift: u6 = 39;
+pub const pdpt_shift: u6 = 30;
+pub const pd_shift: u6 = 21;
+pub const pt_shift: u6 = 12;
+
+pub const huge_page_size_1g: u64 = 1 << 30;
+pub const huge_page_size_2m: u64 = 1 << 21;
+
+pub const flag_present: u64 = 1 << 0;
+pub const flag_writable: u64 = 1 << 1;
+pub const flag_user: u64 = 1 << 2;
+pub const flag_write_through: u64 = 1 << 3;
+pub const flag_cache_disable: u64 = 1 << 4;
+pub const flag_accessed: u64 = 1 << 5;
+pub const flag_dirty: u64 = 1 << 6;
+pub const flag_huge_page: u64 = 1 << 7;
+pub const flag_global: u64 = 1 << 8;
+pub const flag_no_execute: u64 = 1 << 63;
+
+pub const address_mask: u64 = 0x000FFFFFFFFFF000;
+
+pub const kernel_base: u64 = 0xFFFFFFFF80000000;
+pub const physmap_base: u64 = 0xFFFF800000000000;
+pub const physmap_size: u64 = 512 * huge_page_size_1g;
+
+pub const pml4_index_kernel: u64 = 511;
+pub const pml4_index_physmap: u64 = 256;