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author | Brett Weiland <brett_weiland@bpcspace.com> | 2021-03-19 10:54:25 -0500 |
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committer | Brett Weiland <brett_weiland@bpcspace.com> | 2021-03-19 10:54:25 -0500 |
commit | 66289aa8ecfa07b20bad424eb9860b196641ef52 (patch) | |
tree | 9fb3915b5cb18d9f2c1f4648d3bf3fb56396509f /tools/page/page.py |
first commit
Diffstat (limited to 'tools/page/page.py')
-rwxr-xr-x | tools/page/page.py | 29 |
1 files changed, 29 insertions, 0 deletions
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)) + |