| #! /usr/bin/env python2 |
| # -*- coding: utf-8 -*- |
| import argparse |
| import json |
| import os |
| import re |
| import sys |
| import tarfile |
| import urllib |
| from urlparse import urljoin |
| |
| try: |
| from bs4 import BeautifulSoup |
| except ImportError: |
| raise ImportError("Please install BeautifulSoup (apt-get install python-bs4 should do it)") |
| |
| parser = argparse.ArgumentParser(description='Docenizes HTML version of the official Intel Asm PDFs') |
| parser.add_argument('-i', '--inputfolder', type=str, |
| help='Folder where the input files reside as .html. Default is ./asm-docs/', |
| default='asm-docs') |
| parser.add_argument('-o', '--outputpath', type=str, help='Final path of the .js file. Default is ./asm-docs.js', |
| default='./asm-docs.js') |
| parser.add_argument('-d', '--downloadfolder', type=str, |
| help='Folder where the archive will be downloaded and extracted', default='asm-docs') |
| |
| # The maximum number of paragraphs from the description to copy. |
| MAX_DESC_PARAS = 5 |
| STRIP_PREFIX = re.compile(r'^(([0-9a-fA-F]{2}|m64|NP|(REX|E?VEX\.)[.0-9A-Z]*|/[0-9a-z]+|[a-z]+)\b\s*)*') |
| INSTRUCTION_RE = re.compile(r'^([A-Z][A-Z0-9]+)\*?(\s+|$)') |
| # Some instructions are so broken we just take their names from the filename |
| UNPARSEABLE_INSTR_NAMES = ['PSRLW:PSRLD:PSRLQ', 'PSLLW:PSLLD:PSLLQ'] |
| # Some files contain instructions which cannot be parsed and which compilers are unlikely to emit |
| IGNORED_FILE_NAMES = [ |
| # SGX pseudo-instructions |
| "EADD", |
| "EACCEPT", |
| "EAUG", |
| "EACCEPTCOPY", |
| "EDECVIRTCHILD", |
| "EINCVIRTCHILD", |
| "EINIT", |
| "ELDB:ELDU:ELDBC:ELBUC", |
| "EMODPE", |
| "EMODPR", |
| "EMODT", |
| "ERDINFO", |
| "ESETCONTEXT", |
| "ETRACKC", |
| "EBLOCK", |
| "ECREATE", |
| "EDBGRD", |
| "EDBGWR", |
| "EENTER", |
| "EEXIT", |
| "EEXTEND", |
| "EGETKEY", |
| "ELDB", |
| "ELDU", |
| "ENCLS", |
| "ENCLU", |
| "EPA", |
| "EREMOVE", |
| "EREPORT", |
| "ERESUME", |
| "ETRACK", |
| "EWB", |
| # VMX instructions |
| "INVEPT", |
| "INVVPID", |
| "VMCALL", |
| "VMCLEAR", |
| "VMFUNC", |
| "VMLAUNCH", |
| "VMLAUNCH:VMRESUME", |
| "VMPTRLD", |
| "VMPTRST", |
| "VMREAD", |
| "VMRESUME", |
| "VMWRITE", |
| "VMXOFF", |
| "VMXON", |
| # Other instructions |
| "INVLPG", |
| "LAHF", |
| "RDMSR", |
| "SGDT", |
| # Unparsable instructions |
| # These instructions should be supported in the future |
| "MONITOR", |
| "MOVDQ2Q", |
| "MOVBE", |
| "MFENCE", |
| ] |
| # Some instructions are defined in multiple files. We ignore a specific set of the |
| # duplicates here. |
| IGNORED_DUPLICATES = [ |
| 'MOV-1', # move to control reg |
| 'MOV-2', # move to debug reg |
| 'CMPSD', # compare doubleword (defined in CMPS:CMPSB:CMPSW:CMPSD:CMPSQ) |
| 'MOVQ', # defined in MOVD:MOVQ |
| 'MOVSD', # defined in MOVS:MOVSB:MOVSW:MOVSD:MOVSQ |
| 'VPBROADCASTB:VPBROADCASTW:VPBROADCASTD:VPBROADCASTQ', # defined in VPBROADCAST |
| "VGATHERDPS:VGATHERDPD", |
| "VGATHERQPS:VGATHERQPD", |
| "VPGATHERDD:VPGATHERQD", |
| "VPGATHERDQ:VPGATHERQQ", |
| ] |
| # Where to extract the asmdoc archive. |
| ASMDOC_DIR = "asm-docs" |
| ARCHIVE_URL = "http://www.felixcloutier.com/x86/x86.tbz2" |
| ARCHIVE_NAME = "x86.tbz2" |
| |
| |
| class Instruction(object): |
| def __init__(self, name, names, tooltip, body): |
| self.name = name |
| self.names = names |
| self.tooltip = tooltip.rstrip(': ,') |
| self.body = body |
| |
| def __str__(self): |
| return "{} = {}\n{}".format(self.names, self.tooltip, self.body) |
| |
| |
| def get_url_for_instruction(instr): |
| return "http://www.felixcloutier.com/x86/{}.html".format(urllib.quote(instr.name)) |
| |
| |
| def download_asm_doc_archive(downloadfolder): |
| if not os.path.exists(downloadfolder): |
| print "Creating {} as download folder".format(downloadfolder) |
| os.makedirs(downloadfolder) |
| elif not os.path.isdir(downloadfolder): |
| print "Error: download folder {} is not a directory".format(downloadfolder) |
| sys.exit(1) |
| archive_name = os.path.join(downloadfolder, ARCHIVE_NAME) |
| print("Downloading archive...") |
| urllib.urlretrieve(ARCHIVE_URL, archive_name) |
| |
| |
| def extract_asm_doc_archive(downloadfolder, inputfolder): |
| print "Extracting file..." |
| if os.path.isdir(os.path.join(inputfolder, "html")): |
| for root, dirs, files in os.walk(os.path.join(inputfolder, "html")): |
| for file in files: |
| if os.path.splitext(file)[1] == ".html": |
| os.remove(os.path.join(root, file)) |
| tar = tarfile.open(os.path.join(downloadfolder, ARCHIVE_NAME)) |
| tar.extractall(path=inputfolder) |
| |
| |
| def strip_non_instr(i): |
| # removes junk from encodings where the opcode is in the middle |
| # of prefix stuff. e.g. |
| # 66 0f 38 30 /r PMOVZXBW xmm1, xmm2/m64 |
| return STRIP_PREFIX.sub('', i) |
| |
| |
| def instr_name(i): |
| match = INSTRUCTION_RE.match(strip_non_instr(i)) |
| if match: |
| return match.group(1) |
| |
| |
| def get_description_paragraphs(document_soup): |
| description_header_node = document_soup.find(id="description") |
| i = 0 |
| description_paragraph_node = description_header_node.next_sibling.next_sibling |
| description_paragraphs = [] |
| while i < MAX_DESC_PARAS and len(description_paragraph_node.text) > 20: |
| if description_paragraph_node.name == "p": |
| description_paragraphs.append(description_paragraph_node) |
| i = i + 1 |
| # Move two siblings forward. Next sibling is the line feed. |
| description_paragraph_node = description_paragraph_node.next_sibling.next_sibling |
| return description_paragraphs |
| |
| |
| def parse(filename, f): |
| doc = BeautifulSoup(f, 'html.parser') |
| if doc.table is None: |
| print filename + ": Failed to find table" |
| return None |
| table = read_table(doc.table) |
| names = set() |
| |
| def add_all(instrs): |
| for i in instrs: |
| instruction_name = instr_name(i) |
| if instruction_name: |
| names.add(instruction_name) |
| |
| for inst in table: |
| if 'Opcode/Instruction' in inst: |
| add_all(inst['Opcode/Instruction'].split("\n")) |
| elif 'OpcodeInstruction' in inst: |
| add_all(inst['OpcodeInstruction'].split("\n")) |
| elif 'Opcode Instruction' in inst: |
| add_all(inst['Opcode Instruction'].split("\n")) |
| elif 'Opcode*/Instruction' in inst: |
| add_all(inst['Opcode*/Instruction'].split("\n")) |
| elif 'Opcode / Instruction' in inst: |
| add_all(inst['Opcode / Instruction'].split("\n")) |
| elif 'Instruction' in inst: |
| instruction_name = instr_name(inst['Instruction']) |
| if not instruction_name: |
| print "Unable to get instruction from:", inst['Instruction'] |
| else: |
| names.add(instruction_name) |
| # else, skip the line |
| if not names: |
| if filename in UNPARSEABLE_INSTR_NAMES: |
| for inst in filename.split(":"): |
| names.add(inst) |
| else: |
| print filename + ": Failed to read instruction table" |
| return None |
| sections = {} |
| for section_header in doc.find_all("h2"): |
| children = [] |
| first = section_header.next_sibling |
| while first and first.name != 'h2': |
| if str(first).strip(): |
| children.append(first) |
| first = first.next_sibling |
| sections[section_header.text] = children |
| |
| description_paragraphs = get_description_paragraphs(doc) |
| |
| for para in description_paragraphs: |
| for link in para.find_all('a'): |
| # this urljoin will only ensure relative urls are prefixed |
| # if a url is already absolute it does nothing |
| link['href'] = urljoin('http://www.felixcloutier.com/x86/', link['href']) |
| link['target'] = '_blank' |
| link['rel'] = 'noreferrer noopener' |
| |
| |
| return Instruction( |
| filename, |
| names, |
| description_paragraphs[0].text.strip(), |
| ''.join(map(lambda x: str(x), description_paragraphs)).strip()) |
| |
| |
| def read_table(table): |
| # Finding all 'th' is not enough, since some headers are 'td'. |
| # Instead, walk through all children of the first 'tr', filter out those |
| # that are only whitespace, keep `get_text()` on the others. |
| headers = list( |
| map(lambda th: th.get_text(), |
| filter(lambda th: unicode(th).strip(), table.tr.children))) |
| |
| result = [] |
| if headers: |
| # common case |
| for row in table.find_all('tr'): |
| obj = {} |
| for column, name in zip(row.find_all('td'), headers): |
| # Remove '\n's in names that contain it. |
| obj[name.replace('\n', '')] = column.get_text() |
| if obj: |
| result.append(obj) |
| else: |
| # Cases like BEXTR and BZHI |
| rows = table.find_all('tr') |
| if len(rows) != 1: |
| return [] |
| obj = {} |
| for td in rows[0].find_all('td'): |
| header = td.p.strong.get_text() |
| td.p.strong.decompose() |
| obj[header] = td.get_text() |
| result.append(obj) |
| |
| return result |
| |
| |
| def parse_html(directory): |
| print "Parsing instructions..." |
| instructions = [] |
| for root, dirs, files in os.walk(directory): |
| for file in files: |
| if file.endswith(".html") and file != 'index.html': |
| with open(os.path.join(root, file)) as f2: |
| name = os.path.splitext(file)[0] |
| if name in IGNORED_DUPLICATES or name in IGNORED_FILE_NAMES: |
| continue |
| instruction = parse(name, f2) |
| if not instruction: |
| continue |
| instructions.append(instruction) |
| return instructions |
| |
| |
| def self_test(instructions, directory): |
| # For each generated instruction, check that there is a path to a file in |
| # the documentation. |
| directory = os.path.join(directory, "html") |
| ok = True |
| for inst in instructions: |
| if not os.path.isfile(os.path.join(directory, inst.name + ".html")): |
| print("Warning: {} has not file associated".format(inst.name)) |
| ok = False |
| return ok |
| |
| |
| def docenizer(): |
| args = parser.parse_args() |
| print "Called with: {}".format(args) |
| # If we don't have the html folder already... |
| if not os.path.isdir(os.path.join(args.inputfolder, 'html')): |
| # We don't, try with the compressed file |
| if not os.path.isfile(os.path.join(args.downloadfolder, "x86.tbz2")): |
| # We can't find that either. Download it |
| try: |
| download_asm_doc_archive(args.downloadfolder) |
| extract_asm_doc_archive(args.downloadfolder, args.inputfolder) |
| except IOError as e: |
| print("Error when downloading archive:") |
| print(e) |
| sys.exit(1) |
| else: |
| # We have a file already downloaded |
| extract_asm_doc_archive(args.downloadfolder, args.inputfolder) |
| instructions = parse_html(args.inputfolder) |
| instructions.sort(lambda x, y: cmp(x.name, y.name)) |
| self_test(instructions, args.inputfolder) |
| all_inst = set() |
| for inst in instructions: |
| if not all_inst.isdisjoint(inst.names): |
| print "Overlap in instruction names: {} for {}".format( |
| inst.names.intersection(all_inst), inst.name) |
| all_inst = all_inst.union(inst.names) |
| if not self_test(instructions, args.inputfolder): |
| print("Tests do not pass. Not writing output file. Aborting.") |
| sys.exit(3) |
| print "Writing {} instructions".format(len(instructions)) |
| with open(args.outputpath, 'w') as f: |
| f.write(""" |
| function getAsmOpcode(opcode) { |
| if (!opcode) return; |
| switch (opcode.toUpperCase()) { |
| """) |
| for inst in instructions: |
| for name in inst.names: |
| f.write(' case "{}":\n'.format(name)) |
| f.write(' return {}'.format(json.dumps({ |
| "tooltip": inst.tooltip, |
| "html": inst.body, |
| "url": get_url_for_instruction(inst) |
| }, indent=16, separators=(',', ': ')))[:-1] + ' };\n\n') |
| f.write(""" |
| } |
| } |
| |
| module.exports = { |
| getAsmOpcode: getAsmOpcode |
| }; |
| """) |
| |
| |
| if __name__ == '__main__': |
| docenizer() |