816 lines
31 KiB
Python
816 lines
31 KiB
Python
#!/usr/bin/env python3
|
||
# -*- coding: utf-8 -*-
|
||
|
||
"""
|
||
Первый проход КВС (однопроходная версия с заглушками)
|
||
Генерирует CSV-таблицу напрямую из AST
|
||
- Неизвестные метки заменяются заглушками (0xCC) с пометкой в колонке 'уводящий_адрес'
|
||
- В колонке 'приводящая_метка' записываются имена меток, находящихся по данному адресу (через запятую)
|
||
- Колонка 'команда_со_значениями' оставлена пустой (для второго прохода)
|
||
- Колонки 'рассчитанный_уводящий_адрес' и 'рассчитанный_байт' оставлены для второго прохода
|
||
- Колонка 'виртуальный_адрес' содержит виртуальный адрес байта (для pass4)
|
||
"""
|
||
|
||
import sys
|
||
import csv
|
||
|
||
sys.path.insert(0, '.')
|
||
from kvs_data import PAGE_SIZE,ALWAYS_STUB_INSTRUCTIONS, text_vaddr_base, align_up
|
||
from kvs_encoder import encode_instruction
|
||
|
||
# ========== ГЛОБАЛЬНОЕ СОСТОЯНИЕ ==========
|
||
entries = [] # (segment, address, virt_addr, byte, target, source, label, cmd_with_values, calc_target, calc_byte)
|
||
current_address = 0
|
||
current_segment = '.header'
|
||
last_segment = None
|
||
|
||
vaddr_text = text_vaddr_base
|
||
vaddr_data = None
|
||
vaddr_bnd = None
|
||
|
||
text_buffer = bytearray()
|
||
data_buffer = bytearray()
|
||
bnd_size = 0
|
||
|
||
labels = {}
|
||
label_sections = {}
|
||
symbols = {}
|
||
|
||
pending_labels = []
|
||
|
||
text_pos = 0
|
||
data_pos = 0
|
||
|
||
entry_point = "_start"
|
||
relocations = []
|
||
|
||
|
||
|
||
def reset_state():
|
||
global entries, current_address, current_segment, last_segment
|
||
global text_buffer, data_buffer, bnd_size, vaddr_data, vaddr_bnd
|
||
global labels, label_sections, symbols, text_pos, data_pos, entry_point, relocations
|
||
global pending_labels
|
||
|
||
entries = []
|
||
current_address = 0
|
||
current_segment = '.header'
|
||
last_segment = None
|
||
text_buffer = bytearray()
|
||
data_buffer = bytearray()
|
||
bnd_size = 0
|
||
vaddr_data = None
|
||
vaddr_bnd = None
|
||
labels = {}
|
||
label_sections = {}
|
||
symbols = {}
|
||
text_pos = 0
|
||
data_pos = 0
|
||
entry_point = "_start"
|
||
relocations = []
|
||
pending_labels = []
|
||
|
||
|
||
def set_segment(segment: str):
|
||
global current_segment
|
||
current_segment = segment
|
||
|
||
|
||
def get_virtual_address():
|
||
"""Возвращает виртуальный адрес для текущей позиции"""
|
||
if current_segment == '.text':
|
||
return vaddr_text + (current_address - 0x1000)
|
||
elif current_segment == '.data':
|
||
if vaddr_data is None:
|
||
return current_address
|
||
return vaddr_data + (current_address - 0x2000)
|
||
else:
|
||
return current_address
|
||
|
||
|
||
def add_byte(value: int, source: str = "", target=None, labels_list=None):
|
||
global current_address, last_segment, pending_labels
|
||
|
||
effective_labels = ""
|
||
if labels_list is not None and labels_list:
|
||
effective_labels = ','.join(labels_list)
|
||
elif pending_labels:
|
||
effective_labels = ','.join(pending_labels)
|
||
|
||
show_segment = current_segment if current_segment != last_segment else None
|
||
if show_segment:
|
||
last_segment = current_segment
|
||
|
||
virt_addr = get_virtual_address()
|
||
byte_val = value & 0xFF
|
||
|
||
entries.append((
|
||
show_segment if show_segment else "",
|
||
current_address,
|
||
f"0x{virt_addr:08x}", # виртуальный_адрес
|
||
f"0x{byte_val:02x}", # байт (в виде hex-строки)
|
||
target if target else "",
|
||
source,
|
||
effective_labels,
|
||
"", # команда_со_значениями (заполняется во втором проходе)
|
||
"", # рассчитанный_уводящий_адрес
|
||
f"0x{byte_val:02x}" # рассчитанный_байт (изначально = байт)
|
||
))
|
||
current_address += 1
|
||
|
||
if pending_labels:
|
||
pending_labels = []
|
||
|
||
|
||
def add_bytes(values, source: str = "", target=None):
|
||
for i, v in enumerate(values):
|
||
add_byte(v, source if i == 0 else "", target if i == 0 else None)
|
||
|
||
|
||
def add_word16(value: int, source: str = "", target=None):
|
||
add_bytes([
|
||
(value >> 0) & 0xFF,
|
||
(value >> 8) & 0xFF,
|
||
], source, target)
|
||
|
||
|
||
def add_word32(value: int, source: str = "", target=None):
|
||
add_bytes([
|
||
(value >> 0) & 0xFF,
|
||
(value >> 8) & 0xFF,
|
||
(value >> 16) & 0xFF,
|
||
(value >> 24) & 0xFF,
|
||
], source, target)
|
||
|
||
|
||
def add_word64(value: int, source: str = "", target=None):
|
||
add_bytes([
|
||
(value >> 0) & 0xFF,
|
||
(value >> 8) & 0xFF,
|
||
(value >> 16) & 0xFF,
|
||
(value >> 24) & 0xFF,
|
||
(value >> 32) & 0xFF,
|
||
(value >> 40) & 0xFF,
|
||
(value >> 48) & 0xFF,
|
||
(value >> 56) & 0xFF,
|
||
], source, target)
|
||
|
||
|
||
def align_to(alignment: int):
|
||
global current_address, pending_labels
|
||
padding = (alignment - (current_address % alignment)) % alignment
|
||
if padding > 0:
|
||
pending_labels = []
|
||
current_address += padding
|
||
|
||
|
||
def unescape_string(s):
|
||
result = []
|
||
i = 0
|
||
while i < len(s):
|
||
if s[i] == '\\' and i + 1 < len(s):
|
||
if s[i + 1] == 'n':
|
||
result.append('\n')
|
||
elif s[i + 1] == 't':
|
||
result.append('\t')
|
||
elif s[i + 1] == 'r':
|
||
result.append('\r')
|
||
else:
|
||
result.append(s[i + 1])
|
||
i += 2
|
||
else:
|
||
result.append(s[i])
|
||
i += 1
|
||
return ''.join(result)
|
||
|
||
|
||
def generate_elf_header():
|
||
add_bytes([0x7F, 0x45, 0x4C, 0x46], "ELF magic")
|
||
add_byte(2, "ELFCLASS64")
|
||
add_byte(1, "ELFDATA2LSB")
|
||
add_byte(1, "ELF version")
|
||
add_byte(0, "OS ABI")
|
||
add_byte(0, "ABI version")
|
||
add_bytes([0] * 7, "Padding")
|
||
add_word16(2, "e_type = ET_EXEC")
|
||
add_word16(62, "e_machine = EM_X86_64")
|
||
add_word32(1, "e_version")
|
||
add_word64(0, "e_entry (stub)")
|
||
add_word64(64, "e_phoff")
|
||
add_word64(0, "e_shoff = 0")
|
||
add_word32(0, "e_flags")
|
||
add_word16(64, "e_ehsize")
|
||
add_word16(56, "e_phentsize")
|
||
add_word16(2, "e_phnum = 2")
|
||
add_word16(0, "e_shentsize = 0")
|
||
add_word16(0, "e_shnum = 0")
|
||
add_word16(0, "e_shstrndx")
|
||
|
||
|
||
def generate_program_headers():
|
||
add_word32(1, "p_type = PT_LOAD")
|
||
add_word32(5, "p_flags = RX")
|
||
add_word64(0, "p_offset (text stub)")
|
||
add_word64(vaddr_text, "p_vaddr (text)")
|
||
add_word64(vaddr_text, "p_paddr (text)")
|
||
add_word64(0, "p_filesz (text stub)")
|
||
add_word64(0, "p_memsz (text stub)")
|
||
add_word64(PAGE_SIZE, "p_align")
|
||
|
||
add_word32(1, "p_type = PT_LOAD")
|
||
add_word32(6, "p_flags = RW")
|
||
add_word64(0, "p_offset (data stub)")
|
||
add_word64(0, "p_vaddr (data stub)")
|
||
add_word64(0, "p_paddr (data stub)")
|
||
add_word64(0, "p_filesz (data stub)")
|
||
add_word64(0, "p_memsz (data stub)")
|
||
add_word64(PAGE_SIZE, "p_align")
|
||
|
||
|
||
def read_ast(input_file):
|
||
with open(input_file, 'r', encoding='utf-8') as f:
|
||
return [line.strip() for line in f]
|
||
|
||
|
||
def parse_ast_line(line):
|
||
if not line:
|
||
return None, {}
|
||
|
||
line_type = line.split(':')[0]
|
||
|
||
if line_type == "INSTR":
|
||
first = line.find(':')
|
||
second = line.find(':', first + 1)
|
||
third = line.find(':', second + 1)
|
||
|
||
if first == -1 or second == -1 or third == -1:
|
||
return "INSTR", {}
|
||
|
||
mnemonic = line[first + 1:second]
|
||
section = line[second + 1:third]
|
||
operands_str = line[third + 1:]
|
||
operands = operands_str.split(',') if operands_str else []
|
||
|
||
return "INSTR", {
|
||
'mnemonic': mnemonic,
|
||
'section': section,
|
||
'operands': operands
|
||
}
|
||
|
||
elif line_type == "DIRECTIVE":
|
||
parts = line.split(':')
|
||
directive = parts[1] if len(parts) > 1 else ""
|
||
|
||
if directive in ('.текст', '.данные', '.бнд'):
|
||
return "DIRECTIVE", {'directive': directive}
|
||
elif directive == '.глобал':
|
||
return "DIRECTIVE", {'directive': directive, 'label': parts[2] if len(parts) > 2 else ""}
|
||
elif directive in ('.строка', '.строка_нуль'):
|
||
return "DIRECTIVE", {
|
||
'directive': directive,
|
||
'section': parts[2] if len(parts) > 2 else "",
|
||
'string': parts[3] if len(parts) > 3 else ""
|
||
}
|
||
elif directive == '.константа':
|
||
return "DIRECTIVE", {
|
||
'directive': directive,
|
||
'name': parts[2] if len(parts) > 2 else "",
|
||
'value': parts[3] if len(parts) > 3 else ""
|
||
}
|
||
elif directive == '.байт':
|
||
return "DIRECTIVE", {
|
||
'directive': directive,
|
||
'section': parts[2] if len(parts) > 2 else "",
|
||
'bytes': parts[3] if len(parts) > 3 else ""
|
||
}
|
||
elif directive in ('.резб', '.резс', '.рездс', '.резкс'):
|
||
return "DIRECTIVE", {
|
||
'directive': directive,
|
||
'section': parts[2] if len(parts) > 2 else "",
|
||
'count': parts[3] if len(parts) > 3 else "0"
|
||
}
|
||
else:
|
||
return "DIRECTIVE", {'directive': directive}
|
||
|
||
elif line_type == "LABEL":
|
||
parts = line.split(':')
|
||
return "LABEL", {
|
||
'name': parts[1] if len(parts) > 1 else "",
|
||
'section': parts[2] if len(parts) > 2 else ""
|
||
}
|
||
|
||
return line_type, {}
|
||
|
||
|
||
def get_stub_size(mnemonic, operands):
|
||
if mnemonic in ("переход", "вызвать"):
|
||
return 5
|
||
elif mnemonic == "короткий_переход":
|
||
return 2
|
||
elif mnemonic.startswith("переход_если") and not mnemonic.startswith("короткий"):
|
||
return 6
|
||
elif mnemonic.startswith("короткий_переход_если"):
|
||
return 2
|
||
elif mnemonic == "цикл":
|
||
return 2
|
||
elif mnemonic == "переместить_имм" and len(operands) >= 2:
|
||
reg = operands[0]
|
||
if reg in ('раикс', 'рбикс', 'рсикс', 'рдикс', 'рсипи', 'рбипи', 'рсиай', 'рдиай',
|
||
'р8', 'р9', 'р10', 'р11', 'р12', 'р13', 'р14', 'р15'):
|
||
return 10
|
||
elif reg in ('еаикс', 'ебикс', 'есикс', 'едикс'):
|
||
return 7
|
||
else:
|
||
return 2
|
||
elif mnemonic in ("загрузить", "сохранить", "загрузить_адрес"):
|
||
return 7
|
||
elif mnemonic == "сравнить_с":
|
||
return 7
|
||
elif mnemonic in ("прибавить_непосредственно", "вычесть_непосредственно"):
|
||
return 7
|
||
elif mnemonic in ("переместить_с_нулями", "переместить_со_знаком"):
|
||
return 7
|
||
return 1
|
||
|
||
|
||
def extract_label_from_operands(operands):
|
||
"""Извлекает первую метку из операндов инструкции"""
|
||
for op in operands:
|
||
if not op:
|
||
continue
|
||
# Пропускаем регистры
|
||
if op in ('раикс', 'рбикс', 'рсикс', 'рдикс', 'рсипи', 'рбипи', 'рсиай', 'рдиай',
|
||
'еаикс', 'ебикс', 'есикс', 'едикс',
|
||
'аикс', 'бикс', 'сикс', 'дикс',
|
||
'ал', 'бл', 'кл', 'дл',
|
||
'р8', 'р9', 'р10', 'р11', 'р12', 'р13', 'р14', 'р15'):
|
||
continue
|
||
# Пропускаем числа
|
||
if op.isdigit() or (op.startswith('0x') and len(op) > 2):
|
||
continue
|
||
# Пропускаем косвенную адресацию через регистр
|
||
if op.startswith('MEM:reg_indirect:'):
|
||
continue
|
||
# Извлекаем метку из [метка]
|
||
if op.startswith('[') and op.endswith(']'):
|
||
inner = op[1:-1]
|
||
if inner not in ('раикс', 'рбикс', 'рсикс', 'рдикс', 'рсипи', 'рбипи', 'рсиай', 'рдиай'):
|
||
if not inner.isdigit() and not inner.startswith('0x'):
|
||
return inner
|
||
# Обычная метка
|
||
elif op not in symbols:
|
||
return op
|
||
return None
|
||
|
||
|
||
def has_unresolved_labels(operands, mnemonic=""):
|
||
if mnemonic in ALWAYS_STUB_INSTRUCTIONS:
|
||
for op in operands:
|
||
if op and not op.isdigit() and not op.startswith('0x'):
|
||
if op not in ('раикс', 'рбикс', 'рсикс', 'рдикс', 'рсипи', 'рбипи', 'рсиай', 'рдиай',
|
||
'еаикс', 'ебикс', 'есикс', 'едикс',
|
||
'аикс', 'бикс', 'сикс', 'дикс',
|
||
'ал', 'бл', 'кл', 'дл'):
|
||
return True
|
||
|
||
for op in operands:
|
||
if not op:
|
||
continue
|
||
if op in ('раикс', 'рбикс', 'рсикс', 'рдикс', 'рсипи', 'рбипи', 'рсиай', 'рдиай',
|
||
'еаикс', 'ебикс', 'есикс', 'едикс',
|
||
'аикс', 'бикс', 'сикс', 'дикс',
|
||
'ал', 'бл', 'кл', 'дл',
|
||
'р8', 'р9', 'р10', 'р11', 'р12', 'р13', 'р14', 'р15',
|
||
'р8д', 'р9д', 'р10д', 'р11д', 'р12д', 'р13д', 'р14д', 'р15д',
|
||
'р8в', 'р9в', 'р10в', 'р11в', 'р12в', 'р13в', 'р14в', 'р15в',
|
||
'р8б', 'р9б', 'р10б', 'р11б', 'р12б', 'р13б', 'р14б', 'р15б',
|
||
'спл', 'бпл', 'сил', 'дил'):
|
||
continue
|
||
if op.startswith('MEM:reg_indirect:'):
|
||
continue
|
||
if op.startswith('[') and op.endswith(']'):
|
||
inner = op[1:-1]
|
||
if inner in ('раикс', 'рбикс', 'рсикс', 'рдикс', 'рсипи', 'рбипи', 'рсиай', 'рдиай'):
|
||
continue
|
||
if inner.isdigit() or (inner.startswith('0x') and len(inner) > 2):
|
||
continue
|
||
if inner not in labels:
|
||
return True
|
||
continue
|
||
if op.isdigit() or (op.startswith('0x') and len(op) > 2):
|
||
continue
|
||
if op in symbols:
|
||
continue
|
||
if op not in labels:
|
||
return True
|
||
|
||
return False
|
||
|
||
|
||
def get_unresolved_labels(operands):
|
||
unresolved = []
|
||
for op in operands:
|
||
if not op:
|
||
continue
|
||
if op.startswith('[') and op.endswith(']'):
|
||
inner = op[1:-1]
|
||
if inner not in labels and not inner.isdigit() and not (inner.startswith('0x')):
|
||
if inner not in ('раикс', 'рбикс', 'рсикс', 'рдикс', 'рсипи', 'рбипи', 'рсиай', 'рдиай'):
|
||
if inner not in symbols:
|
||
unresolved.append(inner)
|
||
elif op not in labels and not op.isdigit() and not (op.startswith('0x')):
|
||
if op not in ('раикс', 'рбикс', 'рсикс', 'рдикс', 'рсипи', 'рбипи', 'рсиай', 'рдиай',
|
||
'еаикс', 'ебикс', 'есикс', 'едикс',
|
||
'аикс', 'бикс', 'сикс', 'дикс',
|
||
'ал', 'бл', 'кл', 'дл',
|
||
'р8', 'р9', 'р10', 'р11', 'р12', 'р13', 'р14', 'р15'):
|
||
if op not in symbols:
|
||
unresolved.append(op)
|
||
return unresolved
|
||
|
||
|
||
def process_ast_line(line):
|
||
global text_pos, data_pos, vaddr_data, vaddr_bnd, bnd_size
|
||
global text_buffer, data_buffer, entry_point, symbols, pending_labels
|
||
|
||
line_type, fields = parse_ast_line(line)
|
||
|
||
if line_type == "DIRECTIVE":
|
||
directive = fields.get('directive', '')
|
||
|
||
if directive == '.текст':
|
||
set_segment('.text')
|
||
|
||
elif directive == '.данные':
|
||
set_segment('.data')
|
||
align_to(PAGE_SIZE)
|
||
|
||
elif directive == '.бнд':
|
||
set_segment('.bss')
|
||
|
||
elif directive == '.глобал':
|
||
entry_point = fields.get('label', '_start')
|
||
|
||
elif directive == '.константа':
|
||
name = fields.get('name', '')
|
||
value_str = fields.get('value', '')
|
||
if value_str.startswith('0x') or value_str.startswith('0X'):
|
||
value = int(value_str, 16)
|
||
else:
|
||
value = int(value_str)
|
||
symbols[name] = value
|
||
print(f" константа: {name} = {value}")
|
||
|
||
elif directive in ('.строка', '.строка_нуль'):
|
||
s = fields.get('string', '')
|
||
real_s = unescape_string(s)
|
||
bstring = real_s.encode('utf-8')
|
||
if directive == '.строка_нуль':
|
||
bstring += b'\x00'
|
||
|
||
source = f'{directive} "{s}"'
|
||
|
||
for i, byte in enumerate(bstring):
|
||
labels_list = pending_labels if i == 0 else None
|
||
add_byte(byte, source if i == 0 else "", None, labels_list)
|
||
data_buffer.append(byte)
|
||
if labels_list:
|
||
pending_labels = []
|
||
data_pos += len(bstring)
|
||
|
||
elif directive == '.байт':
|
||
bytes_str = fields.get('bytes', '')
|
||
if bytes_str:
|
||
byte_values = bytes_str.split(',')
|
||
source = f'.байт {bytes_str}'
|
||
bstring = bytearray()
|
||
for byte_str in byte_values:
|
||
byte_str = byte_str.strip()
|
||
if byte_str.startswith('0x'):
|
||
val = int(byte_str, 16)
|
||
else:
|
||
val = int(byte_str)
|
||
bstring.append(val & 0xFF)
|
||
|
||
for i, byte in enumerate(bstring):
|
||
labels_list = pending_labels if i == 0 else None
|
||
add_byte(byte, source if i == 0 else "", None, labels_list)
|
||
data_buffer.append(byte)
|
||
if labels_list:
|
||
pending_labels = []
|
||
data_pos += len(bstring)
|
||
|
||
elif directive in ('.резб', '.резс', '.рездс', '.резкс'):
|
||
count = int(fields.get('count', '0'))
|
||
multiplier = {'резб': 1, 'резс': 2, 'рездс': 4, 'резкс': 8}
|
||
bnd_size += count * multiplier.get(directive, 1)
|
||
|
||
elif line_type == "LABEL":
|
||
label_name = fields.get('name', '')
|
||
sec = fields.get('section', '')
|
||
|
||
if sec == '.text':
|
||
addr = vaddr_text + text_pos
|
||
labels[label_name] = addr
|
||
label_sections[label_name] = sec
|
||
if label_name not in pending_labels:
|
||
pending_labels.append(label_name)
|
||
|
||
elif sec == '.data':
|
||
if vaddr_data is None:
|
||
vaddr_data = align_up(vaddr_text + text_pos, PAGE_SIZE)
|
||
addr = vaddr_data + data_pos
|
||
labels[label_name] = addr
|
||
label_sections[label_name] = sec
|
||
if label_name not in pending_labels:
|
||
pending_labels.append(label_name)
|
||
|
||
elif sec == '.бнд':
|
||
if vaddr_bnd is None:
|
||
vaddr_bnd = align_up(vaddr_data + data_pos, PAGE_SIZE)
|
||
addr = vaddr_bnd + bnd_size
|
||
labels[label_name] = addr
|
||
label_sections[label_name] = sec
|
||
if label_name not in pending_labels:
|
||
pending_labels.append(label_name)
|
||
|
||
else:
|
||
addr = current_address
|
||
labels[label_name] = addr
|
||
label_sections[label_name] = sec
|
||
if label_name not in pending_labels:
|
||
pending_labels.append(label_name)
|
||
|
||
elif line_type == "INSTR":
|
||
mnemonic = fields.get('mnemonic', '')
|
||
sec = fields.get('section', '')
|
||
operands = fields.get('operands', [])
|
||
|
||
source = f"{mnemonic} {', '.join(operands)}" if operands else mnemonic
|
||
|
||
need_stub = has_unresolved_labels(operands, mnemonic)
|
||
|
||
if need_stub:
|
||
stub_size = get_stub_size(mnemonic, operands)
|
||
unresolved = get_unresolved_labels(operands)
|
||
|
||
if unresolved:
|
||
reloc_text = f"ЗАГЛУШКА {', '.join(unresolved)}"
|
||
else:
|
||
label_from_op = extract_label_from_operands(operands)
|
||
if label_from_op:
|
||
reloc_text = f"ЗАГЛУШКА {label_from_op}"
|
||
else:
|
||
reloc_text = "ЗАГЛУШКА (неизвестная метка)"
|
||
|
||
relocations.append({
|
||
'address': current_address,
|
||
'size': stub_size,
|
||
'labels': unresolved if unresolved else [label_from_op] if label_from_op else [],
|
||
'source': source,
|
||
'mnemonic': mnemonic
|
||
})
|
||
|
||
for i in range(stub_size):
|
||
labels_list = pending_labels if i == 0 else None
|
||
add_byte(0xCC, source if i == 0 else "", reloc_text if i == 0 else None, labels_list)
|
||
if labels_list:
|
||
pending_labels = []
|
||
|
||
if sec == '.text':
|
||
text_buffer.extend([0xCC] * stub_size)
|
||
text_pos += stub_size
|
||
else:
|
||
data_buffer.extend([0xCC] * stub_size)
|
||
data_pos += stub_size
|
||
else:
|
||
try:
|
||
if sec == '.text':
|
||
current_pos = text_pos
|
||
else:
|
||
current_pos = data_pos
|
||
|
||
encoded = encode_instruction(
|
||
mnemonic, operands, labels, label_sections, symbols,
|
||
vaddr_text, vaddr_data if vaddr_data else 0,
|
||
current_pos, vaddr_bnd if vaddr_bnd else 0
|
||
)
|
||
|
||
for i, byte in enumerate(encoded):
|
||
labels_list = pending_labels if i == 0 else None
|
||
add_byte(byte, source if i == 0 else "", None, labels_list)
|
||
if labels_list:
|
||
pending_labels = []
|
||
|
||
if sec == '.text':
|
||
text_buffer.extend(encoded)
|
||
text_pos += len(encoded)
|
||
else:
|
||
data_buffer.extend(encoded)
|
||
data_pos += len(encoded)
|
||
|
||
except Exception as e:
|
||
print(f"Ошибка кодирования {source}: {e}", file=sys.stderr)
|
||
labels_to_attach = pending_labels.copy()
|
||
add_byte(0xCC, source, f"ОШИБКА: {e}", labels_to_attach)
|
||
pending_labels.clear()
|
||
|
||
if sec == '.text':
|
||
text_buffer.append(0xCC)
|
||
text_pos += 1
|
||
else:
|
||
data_buffer.append(0xCC)
|
||
data_pos += 1
|
||
|
||
|
||
def finalize_headers():
|
||
global entries
|
||
|
||
text_offset = 0x1000
|
||
data_offset = 0x2000
|
||
|
||
text_filesz = len(text_buffer)
|
||
text_memsz = len(text_buffer)
|
||
|
||
data_filesz = len(data_buffer)
|
||
data_memsz = len(data_buffer) + bnd_size
|
||
|
||
vaddr_data_final = align_up(vaddr_text + text_filesz, PAGE_SIZE)
|
||
entry_point_addr = labels.get(entry_point, vaddr_text)
|
||
|
||
i = 0
|
||
while i < len(entries):
|
||
segment, addr, virt_addr, byte_str, target, source, label, cmd_with_values, calc_target, calc_byte = entries[i]
|
||
|
||
if 'e_entry (stub)' in source:
|
||
new_bytes = [(entry_point_addr >> j*8) & 0xFF for j in range(8)]
|
||
for j, nb in enumerate(new_bytes):
|
||
virt = f"0x{entry_point_addr + j:08x}"
|
||
byte_hex = f"0x{nb:02x}"
|
||
entries[i + j] = (segment, addr + j, virt, byte_hex, target,
|
||
f"e_entry = 0x{entry_point_addr:x}",
|
||
label if j == 0 else "",
|
||
"", "", byte_hex)
|
||
i += 8
|
||
continue
|
||
|
||
elif 'p_offset (text stub)' in source:
|
||
new_bytes = [(text_offset >> j*8) & 0xFF for j in range(8)]
|
||
for j, nb in enumerate(new_bytes):
|
||
virt = f"0x{addr + j:08x}"
|
||
byte_hex = f"0x{nb:02x}"
|
||
entries[i + j] = (segment, addr + j, virt, byte_hex, target,
|
||
f"p_offset (text) = 0x{text_offset:x}",
|
||
label if j == 0 else "",
|
||
"", "", byte_hex)
|
||
i += 8
|
||
continue
|
||
|
||
elif 'p_filesz (text stub)' in source:
|
||
new_bytes = [(text_filesz >> j*8) & 0xFF for j in range(8)]
|
||
for j, nb in enumerate(new_bytes):
|
||
virt = f"0x{addr + j:08x}"
|
||
byte_hex = f"0x{nb:02x}"
|
||
entries[i + j] = (segment, addr + j, virt, byte_hex, target,
|
||
f"p_filesz (text) = {text_filesz}",
|
||
label if j == 0 else "",
|
||
"", "", byte_hex)
|
||
i += 8
|
||
continue
|
||
|
||
elif 'p_memsz (text stub)' in source:
|
||
new_bytes = [(text_memsz >> j*8) & 0xFF for j in range(8)]
|
||
for j, nb in enumerate(new_bytes):
|
||
virt = f"0x{addr + j:08x}"
|
||
byte_hex = f"0x{nb:02x}"
|
||
entries[i + j] = (segment, addr + j, virt, byte_hex, target,
|
||
f"p_memsz (text) = {text_memsz}",
|
||
label if j == 0 else "",
|
||
"", "", byte_hex)
|
||
i += 8
|
||
continue
|
||
|
||
elif 'p_offset (data stub)' in source:
|
||
new_bytes = [(data_offset >> j*8) & 0xFF for j in range(8)]
|
||
for j, nb in enumerate(new_bytes):
|
||
virt = f"0x{addr + j:08x}"
|
||
byte_hex = f"0x{nb:02x}"
|
||
entries[i + j] = (segment, addr + j, virt, byte_hex, target,
|
||
f"p_offset (data) = 0x{data_offset:x}",
|
||
label if j == 0 else "",
|
||
"", "", byte_hex)
|
||
i += 8
|
||
continue
|
||
|
||
elif 'p_vaddr (data stub)' in source:
|
||
new_bytes = [(vaddr_data_final >> j*8) & 0xFF for j in range(8)]
|
||
for j, nb in enumerate(new_bytes):
|
||
virt = f"0x{vaddr_data_final + j:08x}"
|
||
byte_hex = f"0x{nb:02x}"
|
||
entries[i + j] = (segment, addr + j, virt, byte_hex, target,
|
||
f"p_vaddr (data) = 0x{vaddr_data_final:x}",
|
||
label if j == 0 else "",
|
||
"", "", byte_hex)
|
||
i += 8
|
||
continue
|
||
|
||
elif 'p_paddr (data stub)' in source:
|
||
new_bytes = [(vaddr_data_final >> j*8) & 0xFF for j in range(8)]
|
||
for j, nb in enumerate(new_bytes):
|
||
virt = f"0x{vaddr_data_final + j:08x}"
|
||
byte_hex = f"0x{nb:02x}"
|
||
entries[i + j] = (segment, addr + j, virt, byte_hex, target,
|
||
f"p_paddr (data) = 0x{vaddr_data_final:x}",
|
||
label if j == 0 else "",
|
||
"", "", byte_hex)
|
||
i += 8
|
||
continue
|
||
|
||
elif 'p_filesz (data stub)' in source:
|
||
new_bytes = [(data_filesz >> j*8) & 0xFF for j in range(8)]
|
||
for j, nb in enumerate(new_bytes):
|
||
virt = f"0x{addr + j:08x}"
|
||
byte_hex = f"0x{nb:02x}"
|
||
entries[i + j] = (segment, addr + j, virt, byte_hex, target,
|
||
f"p_filesz (data) = {data_filesz}",
|
||
label if j == 0 else "",
|
||
"", "", byte_hex)
|
||
i += 8
|
||
continue
|
||
|
||
elif 'p_memsz (data stub)' in source:
|
||
new_bytes = [(data_memsz >> j*8) & 0xFF for j in range(8)]
|
||
for j, nb in enumerate(new_bytes):
|
||
virt = f"0x{addr + j:08x}"
|
||
byte_hex = f"0x{nb:02x}"
|
||
entries[i + j] = (segment, addr + j, virt, byte_hex, target,
|
||
f"p_memsz (data) = {data_memsz}",
|
||
label if j == 0 else "",
|
||
"", "", byte_hex)
|
||
i += 8
|
||
continue
|
||
|
||
i += 1
|
||
|
||
|
||
def save_to_csv(filename: str):
|
||
with open(filename, 'w', newline='', encoding='utf-8') as f:
|
||
writer = csv.writer(f, delimiter=';')
|
||
writer.writerow(['сегмент', 'адрес', 'виртуальный_адрес', 'байт', 'приводящая_метка',
|
||
'уводящий_адрес', 'исходная_команда', 'команда_со_значениями',
|
||
'рассчитанный_уводящий_адрес', 'рассчитанный_байт'])
|
||
|
||
for segment, addr, virt_addr, byte_str, target, source, label, cmd_with_values, calc_target, calc_byte in entries:
|
||
writer.writerow([
|
||
segment,
|
||
f"0x{addr:08x}",
|
||
virt_addr,
|
||
byte_str,
|
||
label,
|
||
target,
|
||
source,
|
||
cmd_with_values,
|
||
calc_target,
|
||
calc_byte
|
||
])
|
||
|
||
|
||
def main():
|
||
if len(sys.argv) != 3:
|
||
print("Использование: python kvs_pass1.py <вход.аст> <выход.csv>")
|
||
sys.exit(1)
|
||
|
||
ast_file = sys.argv[1]
|
||
csv_file = sys.argv[2]
|
||
|
||
reset_state()
|
||
|
||
set_segment('.header')
|
||
generate_elf_header()
|
||
generate_program_headers()
|
||
align_to(PAGE_SIZE)
|
||
|
||
ast_lines = read_ast(ast_file)
|
||
for line in ast_lines:
|
||
process_ast_line(line)
|
||
|
||
finalize_headers()
|
||
save_to_csv(csv_file)
|
||
|
||
vaddr_data_final = align_up(vaddr_text + len(text_buffer), PAGE_SIZE)
|
||
vaddr_bnd_final = align_up(vaddr_data_final + len(data_buffer), PAGE_SIZE)
|
||
|
||
print(f"\n=== Первый проход ===")
|
||
print(f" .text: {len(text_buffer)} байт, vaddr=0x{vaddr_text:x}")
|
||
print(f" .data: {len(data_buffer)} байт, vaddr=0x{vaddr_data_final:x}")
|
||
print(f" .bnd: {bnd_size} байт, vaddr=0x{vaddr_bnd_final:x}")
|
||
print(f" точка входа: {entry_point} = 0x{labels.get(entry_point, vaddr_text):x}")
|
||
print(f" меток: {len(labels)}")
|
||
print(f" констант: {len(symbols)}")
|
||
print(f" релокаций: {len(relocations)}")
|
||
print(f" записей: {len(entries)}")
|
||
print(f" CSV: {csv_file}")
|
||
|
||
|
||
if __name__ == "__main__":
|
||
main() |