mirror of
https://github.com/justinian/jsix.git
synced 2025-12-10 00:14:32 -08:00
ff64d1989f
Updated documentation: Added documentation on the kernel address space layout, process initialization, and rebuilt the syscall docs.
45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
|
|
def unit(size):
|
|
units = ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB']
|
|
|
|
o = 0
|
|
while size >= 1024 and o < len(units):
|
|
o += 1
|
|
size = size >> 10
|
|
|
|
return f"{size} {units[o]}"
|
|
|
|
|
|
class Layout:
|
|
from collections import namedtuple
|
|
Region = namedtuple("Region", ("name", "desc", "start", "size", "shared"))
|
|
|
|
sizes = {'G': 1024 ** 3, 'T': 1024 ** 4}
|
|
|
|
@staticmethod
|
|
def get_size(desc):
|
|
size, mag = int(desc[:-1]), desc[-1]
|
|
|
|
try:
|
|
mult = Layout.sizes[mag]
|
|
except KeyError:
|
|
raise RuntimeError(f"No magnitude named '{mag}'.")
|
|
|
|
return size * mult
|
|
|
|
def __init__(self, path):
|
|
from yaml import safe_load
|
|
|
|
regions = []
|
|
addr = 1 << 64
|
|
|
|
with open(path, 'r') as infile:
|
|
data = safe_load(infile.read())
|
|
for r in data:
|
|
size = Layout.get_size(r["size"])
|
|
addr -= size
|
|
regions.append(Layout.Region(r["name"], r["desc"], addr, size,
|
|
r.get("shared", False)))
|
|
|
|
self.regions = tuple(regions)
|