From 66289aa8ecfa07b20bad424eb9860b196641ef52 Mon Sep 17 00:00:00 2001
From: Brett Weiland <brett_weiland@bpcspace.com>
Date: Fri, 19 Mar 2021 10:54:25 -0500
Subject: first commit

---
 tools/page/page.py | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100755 tools/page/page.py

(limited to 'tools/page/page.py')

diff --git a/tools/page/page.py b/tools/page/page.py
new file mode 100755
index 0000000..03d8e32
--- /dev/null
+++ b/tools/page/page.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+from math import ceil as c
+def get_offsets(addr):
+    if addr % 4096:
+        print("You must align to 4096!")
+        return 0
+    if addr > 2 ** 47:
+        print("Address too big!")
+        return 0
+
+
+    pte = (addr >> 12) & 0x1ff 
+    pde = (addr >> 21) & 0x1ff 
+    pdpe =(addr >> 30) & 0x1ff 
+    pml4 =(addr >> 39) & 0x1ff 
+    print("pte:\t{}\npde:\t{}\npdpe:\t{}\npml4:\t{}".format(pte, pde, pdpe, pml4))
+
+def get_table_size(addr):
+    pte_cnt = c(c(addr / (1 << 12)) / 512) * 512
+    pde_cnt = c(c(addr / (1 << 21)) / 512) * 512
+    pdpe_cnt = c(c(addr / (1 << 30)) / 512) * 512
+    pml4_cnt = c(c(addr / (1 << 39)) / 512) * 512
+
+
+    return((pte_cnt + pde_cnt + pdpe_cnt + pml4_cnt) * 8)
+
+ts = get_table_size(68719476736) 
+print(hex(ts))
+
-- 
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