feat[OS/win4]: сделал эту еб**ую лабу

OSs/lab-virt-win/simasm.py

@@ -0,0 +1,101 @@
+#/usr/bin/python3
+
+"""
+Маленький скрипт для сборки бинарных файликов для потока-симулятора из +- человекочитаемого текста
+"""
+
+import argparse
+import sys
+import struct
+import re
+
+time_suffixes = {
+        "": 1,
+        "ms": 1,
+        "s":  1000,
+        }
+size_suffiexes = {
+        "": 1,
+        "kb": 2 ** 10,
+        "Mb": 2 ** 20,
+        "Gb": 2 ** 30
+        }
+
+operations = {
+        "exit":             0x00,
+        "reserve_region":   0x01,
+        "pass_block":       0x02,
+        "non_save_block":   0x03,
+        "free_region":      0x04,
+        "return_block":     0x05,
+        "lock_block":       0x06,
+        "unlock_block":     0x07,
+        "mess_region":      0x08
+        }
+
+access = {
+        "page_noaccess":          0x01,
+        "page_readonly":          0x02,
+        "r":                      0x02,
+        "page_readwrite":         0x04,
+        "rw":                     0x04,
+        "page_execute":           0x10,
+        "e":                      0x10,
+        "page_execute_read":      0x20,
+        "re":                     0x20,
+        "page_execute_readwrite": 0x40,
+        "rwe":                    0x40
+        }
+
+def main():
+    parser = argparse.ArgumentParser(prog="simasm")
+    parser.add_argument("--file", "-f", type=str, help="file with program")
+    parser.add_argument("--output", "-o", type=str, help="file to store program")
+    args = parser.parse_args()
+
+    program = ""
+    if args.file:
+        with open(args.file, "r", encoding="utf-8") as f:
+            program = f.read()
+    else:
+        program = sys.stdin.read()
+
+    program = re.sub("#.*$", "", program, flags=re.M)
+    program = " ".join(program.split())
+    lines = list(filter(lambda s: s!="", program.split(";")))
+    binary = bytearray()
+    for line in lines:
+        words = line.split()
+        if len(words) != 5:
+            print("wrong line")
+            sys.exit(1)
+        # timestamp
+        m = re.match(r"(\d+)(\w*)", words[0])
+        assert m
+        time_offset = int(m.group(1)) * time_suffixes[m.group(2)]
+
+        region_in = words[1]
+        region = 0
+        if region_in.startswith("0x"):
+            region = int(region_in, 16)
+        else:
+            region = int(region_in)
+
+        operation = operations[words[2]]
+        
+        m = re.match(r"(\d+)(\w*)", words[3])
+        assert m
+        size = int(m.group(1)) * size_suffiexes[m.group(2)]
+
+        pg_access = access[words[4]]
+
+        binary += struct.pack("QQQQQ", time_offset, operation, region, size, pg_access)
+        
+    if args.output:
+        with open(args.output, "wb") as f:
+            f.write(binary)
+    else:
+        print(binary.hex())
+
+if __name__ == "__main__":
+    main()