| #!/usr/bin/env python2 |
| |
| ''' |
| You should normally never use this! Use emcc instead. |
| |
| This is a small wrapper script around the core JS compiler. This calls that |
| compiler with the settings given to it. It can also read data from C/C++ |
| header files (so that the JS compiler can see the constants in those |
| headers, for the libc implementation in JS). |
| ''' |
| |
| import os, sys, json, optparse, subprocess, re, time, multiprocessing, string, logging |
| |
| from tools import shared |
| from tools import jsrun, cache as cache_module, tempfiles |
| from tools.response_file import read_response_file |
| from tools.shared import WINDOWS |
| |
| __rootpath__ = os.path.abspath(os.path.dirname(__file__)) |
| def path_from_root(*pathelems): |
| """Returns the absolute path for which the given path elements are |
| relative to the emscripten root. |
| """ |
| return os.path.join(__rootpath__, *pathelems) |
| |
| def get_configuration(): |
| if hasattr(get_configuration, 'configuration'): |
| return get_configuration.configuration |
| |
| configuration = shared.Configuration(environ=os.environ) |
| get_configuration.configuration = configuration |
| return configuration |
| |
| def scan(ll, settings): |
| # blockaddress(@main, %23) |
| blockaddrs = [] |
| for blockaddr in re.findall('blockaddress\([^)]*\)', ll): |
| b = blockaddr.split('(')[1][:-1].split(', ') |
| blockaddrs.append(b) |
| if len(blockaddrs) > 0: |
| settings['NECESSARY_BLOCKADDRS'] = blockaddrs |
| |
| NUM_CHUNKS_PER_CORE = 1.0 |
| MIN_CHUNK_SIZE = 1024*1024 |
| MAX_CHUNK_SIZE = float(os.environ.get('EMSCRIPT_MAX_CHUNK_SIZE') or 'inf') # configuring this is just for debugging purposes |
| |
| STDERR_FILE = os.environ.get('EMCC_STDERR_FILE') |
| if STDERR_FILE: |
| STDERR_FILE = os.path.abspath(STDERR_FILE) |
| logging.info('logging stderr in js compiler phase into %s' % STDERR_FILE) |
| STDERR_FILE = open(STDERR_FILE, 'w') |
| |
| def process_funcs((i, funcs_file, meta, settings_file, compiler, forwarded_file, libraries, compiler_engine, DEBUG)): |
| try: |
| #print >> sys.stderr, 'running', str([settings_file, funcs_file, 'funcs', forwarded_file] + libraries).replace("'/", "'") # can use this in src/compiler_funcs.html arguments, |
| # # just copy temp dir to under this one |
| out = jsrun.run_js( |
| compiler, |
| engine=compiler_engine, |
| args=[settings_file, funcs_file, 'funcs', forwarded_file] + libraries, |
| stdout=subprocess.PIPE, |
| stderr=STDERR_FILE, |
| cwd=path_from_root('src')) |
| except KeyboardInterrupt: |
| # Python 2.7 seems to lock up when a child process throws KeyboardInterrupt |
| raise Exception() |
| if DEBUG: logging.debug('.') |
| return out |
| |
| def emscript(infile, settings, outfile, libraries=[], compiler_engine=None, |
| temp_files=None, DEBUG=None, DEBUG_CACHE=None): |
| """Runs the emscripten LLVM-to-JS compiler. We parallelize as much as possible |
| |
| Args: |
| infile: The path to the input LLVM assembly file. |
| settings: JSON-formatted settings that override the values |
| defined in src/settings.js. |
| outfile: The file where the output is written. |
| """ |
| |
| compiler = path_from_root('src', 'compiler.js') |
| |
| # Parallelization: We run 3 phases: |
| # 1 aka 'pre' : Process types and metadata and so forth, and generate the preamble. |
| # 2 aka 'funcs': Process functions. We can parallelize this, working on each function independently. |
| # 3 aka 'post' : Process globals, generate postamble and finishing touches. |
| |
| if DEBUG: logging.debug('emscript: ll=>js') |
| |
| # Pre-scan ll and alter settings as necessary |
| if DEBUG: t = time.time() |
| ll = open(infile).read() |
| scan(ll, settings) |
| total_ll_size = len(ll) |
| if DEBUG: logging.debug(' emscript: scan took %s seconds' % (time.time() - t)) |
| |
| # Split input into the relevant parts for each phase |
| |
| if DEBUG: t = time.time() |
| |
| pre = [] |
| funcs = [] # split up functions here, for parallelism later |
| |
| meta_start = ll.find('\n!') |
| if meta_start > 0: |
| meta = ll[meta_start:] |
| else: |
| meta = '' |
| meta_start = -1 |
| |
| start = ll.find('\n') if ll[0] == ';' else 0 # ignore first line, which contains ; ModuleID = '/dir name' |
| |
| func_start = start |
| last = func_start |
| while 1: |
| last = func_start |
| func_start = ll.find('\ndefine ', func_start) |
| if func_start > last: |
| pre.append(ll[last:min(func_start+1, meta_start) if meta_start > 0 else func_start+1] + '\n') |
| if func_start < 0: |
| pre.append(ll[last:meta_start] + '\n') |
| break |
| header = ll[func_start+1:ll.find('\n', func_start+1)+1] |
| end = ll.find('\n}', func_start) |
| last = end+3 |
| funcs.append((header, ll[func_start+1:last])) |
| pre.append(header + '}\n') |
| func_start = last |
| ll = None |
| |
| if DEBUG and len(meta) > 1024*1024: logging.debug('emscript warning: large amounts of metadata, will slow things down') |
| if DEBUG: logging.debug(' emscript: split took %s seconds' % (time.time() - t)) |
| |
| if len(funcs) == 0: |
| logging.error('No functions to process. Make sure you prevented LLVM from eliminating them as dead (use EXPORTED_FUNCTIONS if necessary, see the FAQ)') |
| |
| #if DEBUG: |
| # logging.debug('========= pre ================\n') |
| # logging.debug(''.join(pre)) |
| # logging.debug('========== funcs ===============\n') |
| # for func in funcs: |
| # logging.debug('\n// ===\n\n', ''.join(func)) |
| # logging.debug('=========================\n') |
| |
| # Save settings to a file to work around v8 issue 1579 |
| settings_file = temp_files.get('.txt').name |
| def save_settings(): |
| global settings_text |
| settings_text = json.dumps(settings, sort_keys=True) |
| s = open(settings_file, 'w') |
| s.write(settings_text) |
| s.close() |
| save_settings() |
| |
| # Phase 1 - pre |
| if DEBUG: t = time.time() |
| pre_file = temp_files.get('.pre.ll').name |
| pre_input = ''.join(pre) + '\n' + meta |
| out = None |
| if not out: |
| open(pre_file, 'w').write(pre_input) |
| #print >> sys.stderr, 'running', str([settings_file, pre_file, 'pre'] + libraries).replace("'/", "'") # see funcs |
| out = jsrun.run_js(compiler, compiler_engine, [settings_file, pre_file, 'pre'] + libraries, stdout=subprocess.PIPE, stderr=STDERR_FILE, |
| cwd=path_from_root('src')) |
| assert '//FORWARDED_DATA:' in out, 'Did not receive forwarded data in pre output - process failed?' |
| pre, forwarded_data = out.split('//FORWARDED_DATA:') |
| forwarded_file = temp_files.get('.json').name |
| pre_input = None |
| open(forwarded_file, 'w').write(forwarded_data) |
| if DEBUG: logging.debug(' emscript: phase 1 took %s seconds' % (time.time() - t)) |
| |
| indexed_functions = set() |
| forwarded_json = json.loads(forwarded_data) |
| for key in forwarded_json['Functions']['indexedFunctions'].iterkeys(): |
| indexed_functions.add(key) |
| |
| # Phase 2 - func |
| |
| cores = int(os.environ.get('EMCC_CORES') or multiprocessing.cpu_count()) |
| assert cores >= 1 |
| if cores > 1: |
| intended_num_chunks = int(round(cores * NUM_CHUNKS_PER_CORE)) |
| chunk_size = max(MIN_CHUNK_SIZE, total_ll_size / intended_num_chunks) |
| chunk_size += 3*len(meta) # keep ratio of lots of function code to meta (expensive to process, and done in each parallel task) |
| chunk_size = min(MAX_CHUNK_SIZE, chunk_size) |
| else: |
| chunk_size = MAX_CHUNK_SIZE # if 1 core, just use the max chunk size |
| |
| if DEBUG: t = time.time() |
| if settings.get('ASM_JS'): |
| settings['EXPORTED_FUNCTIONS'] = forwarded_json['EXPORTED_FUNCTIONS'] |
| save_settings() |
| |
| chunks = cache_module.chunkify(funcs, chunk_size) |
| |
| #sys.exit(1) |
| #chunks = [chunks[0]] # pick specific chunks for debugging/profiling |
| |
| funcs = None |
| |
| # TODO: minimize size of forwarded data from funcs to what we actually need |
| |
| if len(chunks) > 0: |
| if cores == 1 and total_ll_size < MAX_CHUNK_SIZE: |
| assert len(chunks) == 1, 'no point in splitting up without multiple cores' |
| |
| if DEBUG: logging.debug(' emscript: phase 2 working on %d chunks %s (intended chunk size: %.2f MB, meta: %.2f MB, forwarded: %.2f MB, total: %.2f MB)' % (len(chunks), ('using %d cores' % cores) if len(chunks) > 1 else '', chunk_size/(1024*1024.), len(meta)/(1024*1024.), len(forwarded_data)/(1024*1024.), total_ll_size/(1024*1024.))) |
| |
| commands = [] |
| for i in range(len(chunks)): |
| funcs_file = temp_files.get('.func_%d.ll' % i).name |
| f = open(funcs_file, 'w') |
| f.write(chunks[i]) |
| chunks[i] = None # leave chunks array alive (need its length later) |
| f.write('\n') |
| f.write(meta) |
| f.close() |
| commands.append( |
| (i, funcs_file, meta, settings_file, compiler, forwarded_file, libraries, compiler_engine,# + ['--prof'], |
| DEBUG) |
| ) |
| |
| if len(chunks) > 1: |
| pool = multiprocessing.Pool(processes=cores) |
| outputs = pool.map(process_funcs, commands, chunksize=1) |
| elif len(chunks) == 1: |
| outputs = [process_funcs(commands[0])] |
| |
| commands = None |
| |
| else: |
| outputs = [] |
| |
| chunks = None |
| |
| outputs = [output.split('//FORWARDED_DATA:') for output in outputs] |
| for output in outputs: |
| assert len(output) == 2, 'Did not receive forwarded data in an output - process failed? We only got: ' + output[0][-3000:] |
| |
| if DEBUG: logging.debug(' emscript: phase 2 took %s seconds' % (time.time() - t)) |
| if DEBUG: t = time.time() |
| |
| # merge forwarded data |
| if settings.get('ASM_JS'): |
| all_exported_functions = set(settings['EXPORTED_FUNCTIONS']) # both asm.js and otherwise |
| for additional_export in settings['DEFAULT_LIBRARY_FUNCS_TO_INCLUDE']: # additional functions to export from asm, if they are implemented |
| all_exported_functions.add('_' + additional_export) |
| exported_implemented_functions = set() |
| for func_js, curr_forwarded_data in outputs: |
| curr_forwarded_json = json.loads(curr_forwarded_data) |
| forwarded_json['Types']['hasInlineJS'] = forwarded_json['Types']['hasInlineJS'] or curr_forwarded_json['Types']['hasInlineJS'] |
| forwarded_json['Types']['usesSIMD'] = forwarded_json['Types']['usesSIMD'] or curr_forwarded_json['Types']['usesSIMD'] |
| forwarded_json['Types']['preciseI64MathUsed'] = forwarded_json['Types']['preciseI64MathUsed'] or curr_forwarded_json['Types']['preciseI64MathUsed'] |
| for key, value in curr_forwarded_json['Functions']['blockAddresses'].iteritems(): |
| forwarded_json['Functions']['blockAddresses'][key] = value |
| for key in curr_forwarded_json['Functions']['indexedFunctions'].iterkeys(): |
| indexed_functions.add(key) |
| if settings.get('ASM_JS'): |
| export_bindings = settings['EXPORT_BINDINGS'] |
| export_all = settings['EXPORT_ALL'] |
| for key in curr_forwarded_json['Functions']['implementedFunctions'].iterkeys(): |
| if key in all_exported_functions or export_all or (export_bindings and key.startswith('_emscripten_bind')): |
| exported_implemented_functions.add(key) |
| for key, value in curr_forwarded_json['Functions']['unimplementedFunctions'].iteritems(): |
| forwarded_json['Functions']['unimplementedFunctions'][key] = value |
| for key, value in curr_forwarded_json['Functions']['neededTables'].iteritems(): |
| forwarded_json['Functions']['neededTables'][key] = value |
| |
| if settings.get('ASM_JS'): |
| parts = pre.split('// ASM_LIBRARY FUNCTIONS\n') |
| if len(parts) > 1: |
| pre = parts[0] |
| outputs.append([parts[1]]) |
| funcs_js = [output[0] for output in outputs] |
| |
| outputs = None |
| if DEBUG: logging.debug(' emscript: phase 2b took %s seconds' % (time.time() - t)) |
| if DEBUG: t = time.time() |
| |
| # calculations on merged forwarded data |
| forwarded_json['Functions']['indexedFunctions'] = {} |
| i = settings['FUNCTION_POINTER_ALIGNMENT'] # universal counter |
| if settings['ASM_JS']: i += settings['RESERVED_FUNCTION_POINTERS']*settings['FUNCTION_POINTER_ALIGNMENT'] |
| base_fp = i |
| table_counters = {} # table-specific counters |
| alias = settings['ASM_JS'] and settings['ALIASING_FUNCTION_POINTERS'] |
| sig = None |
| for indexed in indexed_functions: |
| if alias: |
| sig = forwarded_json['Functions']['implementedFunctions'].get(indexed) or forwarded_json['Functions']['unimplementedFunctions'].get(indexed) |
| assert sig, indexed |
| if sig not in table_counters: |
| table_counters[sig] = base_fp |
| curr = table_counters[sig] |
| table_counters[sig] += settings['FUNCTION_POINTER_ALIGNMENT'] |
| else: |
| curr = i |
| i += settings['FUNCTION_POINTER_ALIGNMENT'] |
| #logging.debug('function indexing ' + str([indexed, curr, sig])) |
| forwarded_json['Functions']['indexedFunctions'][indexed] = curr # make sure not to modify this python object later - we use it in indexize |
| |
| def split_32(x): |
| x = int(x) |
| return '%d,%d,%d,%d' % (x&255, (x >> 8)&255, (x >> 16)&255, (x >> 24)&255) |
| |
| indexing = forwarded_json['Functions']['indexedFunctions'] |
| def indexize_mem(js): |
| return re.sub(r"\"?'?{{ FI_([\w\d_$]+) }}'?\"?,0,0,0", lambda m: split_32(indexing.get(m.groups(0)[0]) or 0), js) |
| def indexize(js): |
| return re.sub(r"'{{ FI_([\w\d_$]+) }}'", lambda m: str(indexing.get(m.groups(0)[0]) or 0), js) |
| |
| blockaddrs = forwarded_json['Functions']['blockAddresses'] |
| def blockaddrsize_mem(js): |
| return re.sub(r'"?{{{ BA_([\w\d_$]+)\|([\w\d_$]+) }}}"?,0,0,0', lambda m: split_32(blockaddrs[m.groups(0)[0]][m.groups(0)[1]]), js) |
| def blockaddrsize(js): |
| return re.sub(r'"?{{{ BA_([\w\d_$]+)\|([\w\d_$]+) }}}"?', lambda m: str(blockaddrs[m.groups(0)[0]][m.groups(0)[1]]), js) |
| |
| pre = blockaddrsize(blockaddrsize_mem(indexize(indexize_mem(pre)))) |
| |
| if settings.get('ASM_JS'): |
| # move postsets into the asm module |
| class PostSets: js = '' |
| def handle_post_sets(m): |
| PostSets.js = m.group(0) |
| return '\n' |
| pre = re.sub(r'function runPostSets[^}]+}', handle_post_sets, pre) |
| |
| #if DEBUG: outfile.write('// pre\n') |
| outfile.write(pre) |
| pre = None |
| |
| #if DEBUG: outfile.write('// funcs\n') |
| |
| # forward |
| forwarded_data = json.dumps(forwarded_json) |
| forwarded_file = temp_files.get('.2.json').name |
| open(forwarded_file, 'w').write(indexize(forwarded_data)) |
| if DEBUG: logging.debug(' emscript: phase 2c took %s seconds' % (time.time() - t)) |
| |
| # Phase 3 - post |
| if DEBUG: t = time.time() |
| post_file = temp_files.get('.post.ll').name |
| open(post_file, 'w').write('\n') # no input, just processing of forwarded data |
| out = jsrun.run_js(compiler, compiler_engine, [settings_file, post_file, 'post', forwarded_file] + libraries, stdout=subprocess.PIPE, stderr=STDERR_FILE, |
| cwd=path_from_root('src')) |
| post, last_forwarded_data = out.split('//FORWARDED_DATA:') # if this fails, perhaps the process failed prior to printing forwarded data? |
| last_forwarded_json = json.loads(last_forwarded_data) |
| |
| if settings.get('ASM_JS'): |
| post_funcs, post_rest = post.split('// EMSCRIPTEN_END_FUNCS\n') |
| post = post_rest |
| |
| # Move preAsms to their right place |
| def move_preasm(m): |
| contents = m.groups(0)[0] |
| outfile.write(contents + '\n') |
| return '' |
| post_funcs = re.sub(r'/\* PRE_ASM \*/(.*)\n', lambda m: move_preasm(m), post_funcs) |
| |
| funcs_js += ['\n' + post_funcs + '// EMSCRIPTEN_END_FUNCS\n'] |
| |
| simple = os.environ.get('EMCC_SIMPLE_ASM') |
| class Counter: |
| i = 0 |
| j = 0 |
| pre_tables = last_forwarded_json['Functions']['tables']['pre'] |
| del last_forwarded_json['Functions']['tables']['pre'] |
| |
| def make_table(sig, raw): |
| i = Counter.i |
| Counter.i += 1 |
| bad = 'b' + str(i) |
| params = ','.join(['p%d' % p for p in range(len(sig)-1)]) |
| coercions = ';'.join(['p%d = %s' % (p, shared.JS.make_coercion('p%d' % p, sig[p+1], settings)) for p in range(len(sig)-1)]) + ';' |
| ret = '' if sig[0] == 'v' else ('return %s' % shared.JS.make_initializer(sig[0], settings)) |
| start = raw.index('[') |
| end = raw.rindex(']') |
| body = raw[start+1:end].split(',') |
| for j in range(settings['RESERVED_FUNCTION_POINTERS']): |
| body[settings['FUNCTION_POINTER_ALIGNMENT'] * (1 + j)] = 'jsCall_%s_%s' % (sig, j) |
| Counter.j = 0 |
| def fix_item(item): |
| Counter.j += 1 |
| newline = Counter.j % 30 == 29 |
| if item == '0': return bad if not newline else (bad + '\n') |
| return item if not newline else (item + '\n') |
| body = ','.join(map(fix_item, body)) |
| return ('function %s(%s) { %s %s(%d); %s }' % (bad, params, coercions, 'abort' if not settings['ASSERTIONS'] else 'nullFunc', i, ret), ''.join([raw[:start+1], body, raw[end:]])) |
| |
| infos = [make_table(sig, raw) for sig, raw in last_forwarded_json['Functions']['tables'].iteritems()] |
| |
| function_tables_defs = '\n'.join([info[0] for info in infos]) + '\n// EMSCRIPTEN_END_FUNCS\n' + '\n'.join([info[1] for info in infos]) |
| |
| asm_setup = '' |
| maths = ['Math.' + func for func in ['floor', 'abs', 'sqrt', 'pow', 'cos', 'sin', 'tan', 'acos', 'asin', 'atan', 'atan2', 'exp', 'log', 'ceil', 'imul']] |
| fundamentals = ['Math', 'Int8Array', 'Int16Array', 'Int32Array', 'Uint8Array', 'Uint16Array', 'Uint32Array', 'Float32Array', 'Float64Array'] |
| if settings['ALLOW_MEMORY_GROWTH']: fundamentals.append('byteLength') |
| math_envs = ['Math.min'] # TODO: move min to maths |
| asm_setup += '\n'.join(['var %s = %s;' % (f.replace('.', '_'), f) for f in math_envs]) |
| |
| if settings['PRECISE_F32']: maths += ['Math.fround'] |
| |
| basic_funcs = ['abort', 'assert', 'asmPrintInt', 'asmPrintFloat'] + [m.replace('.', '_') for m in math_envs] |
| if settings['SAFE_HEAP']: basic_funcs += ['SAFE_HEAP_LOAD', 'SAFE_HEAP_STORE', 'SAFE_FT_MASK'] |
| if settings['CHECK_HEAP_ALIGN']: basic_funcs += ['CHECK_ALIGN_2', 'CHECK_ALIGN_4', 'CHECK_ALIGN_8'] |
| if settings['ASSERTIONS']: |
| basic_funcs += ['nullFunc'] |
| asm_setup += 'function nullFunc(x) { Module["printErr"]("Invalid function pointer called. Perhaps a miscast function pointer (check compilation warnings) or bad vtable lookup (maybe due to derefing a bad pointer, like NULL)?"); abort(x) }\n' |
| |
| basic_vars = ['STACKTOP', 'STACK_MAX', 'tempDoublePtr', 'ABORT'] |
| basic_float_vars = ['NaN', 'Infinity'] |
| |
| if forwarded_json['Types']['preciseI64MathUsed'] or \ |
| forwarded_json['Functions']['libraryFunctions'].get('_llvm_cttz_i32') or \ |
| forwarded_json['Functions']['libraryFunctions'].get('_llvm_ctlz_i32'): |
| basic_vars += ['cttz_i8', 'ctlz_i8'] |
| |
| if settings.get('DLOPEN_SUPPORT'): |
| for sig in last_forwarded_json['Functions']['tables'].iterkeys(): |
| basic_vars.append('F_BASE_%s' % sig) |
| asm_setup += ' var F_BASE_%s = %s;\n' % (sig, 'FUNCTION_TABLE_OFFSET' if settings.get('SIDE_MODULE') else '0') + '\n' |
| |
| asm_runtime_funcs = ['stackAlloc', 'stackSave', 'stackRestore', 'setThrew'] + ['setTempRet%d' % i for i in range(10)] + ['getTempRet%d' % i for i in range(10)] |
| # function tables |
| function_tables = ['dynCall_' + table for table in last_forwarded_json['Functions']['tables']] |
| function_tables_impls = [] |
| |
| for sig in last_forwarded_json['Functions']['tables'].iterkeys(): |
| args = ','.join(['a' + str(i) for i in range(1, len(sig))]) |
| arg_coercions = ' '.join(['a' + str(i) + '=' + shared.JS.make_coercion('a' + str(i), sig[i], settings) + ';' for i in range(1, len(sig))]) |
| coerced_args = ','.join([shared.JS.make_coercion('a' + str(i), sig[i], settings) for i in range(1, len(sig))]) |
| ret = ('return ' if sig[0] != 'v' else '') + shared.JS.make_coercion('FUNCTION_TABLE_%s[index&{{{ FTM_%s }}}](%s)' % (sig, sig, coerced_args), sig[0], settings) |
| function_tables_impls.append(''' |
| function dynCall_%s(index%s%s) { |
| index = index|0; |
| %s |
| %s; |
| } |
| ''' % (sig, ',' if len(sig) > 1 else '', args, arg_coercions, ret)) |
| |
| for i in range(settings['RESERVED_FUNCTION_POINTERS']): |
| jsret = ('return ' if sig[0] != 'v' else '') + shared.JS.make_coercion('jsCall_%s(%d%s%s)' % (sig, i, ',' if coerced_args else '', coerced_args), sig[0], settings) |
| function_tables_impls.append(''' |
| function jsCall_%s_%s(%s) { |
| %s |
| %s; |
| } |
| |
| ''' % (sig, i, args, arg_coercions, jsret)) |
| shared.Settings.copy(settings) |
| asm_setup += '\n' + shared.JS.make_invoke(sig) + '\n' |
| basic_funcs.append('invoke_%s' % sig) |
| if settings.get('RESERVED_FUNCTION_POINTERS'): |
| asm_setup += '\n' + shared.JS.make_jscall(sig) + '\n' |
| basic_funcs.append('jsCall_%s' % sig) |
| if settings.get('DLOPEN_SUPPORT'): |
| asm_setup += '\n' + shared.JS.make_extcall(sig) + '\n' |
| basic_funcs.append('extCall_%s' % sig) |
| |
| # calculate exports |
| exported_implemented_functions = list(exported_implemented_functions) |
| exported_implemented_functions.append('runPostSets') |
| exports = [] |
| if not simple: |
| for export in exported_implemented_functions + asm_runtime_funcs + function_tables: |
| exports.append("%s: %s" % (export, export)) |
| exports = '{ ' + ', '.join(exports) + ' }' |
| else: |
| exports = '_main' |
| |
| # calculate globals |
| try: |
| del forwarded_json['Variables']['globals']['_llvm_global_ctors'] # not a true variable |
| except: |
| pass |
| # If no named globals, only need externals |
| global_vars = map(lambda g: g['name'], filter(lambda g: settings['NAMED_GLOBALS'] or g.get('external') or g.get('unIndexable'), forwarded_json['Variables']['globals'].values())) |
| global_funcs = [key for key, value in forwarded_json['Functions']['libraryFunctions'].iteritems() if value != 2] |
| def math_fix(g): |
| return g if not g.startswith('Math_') else g.split('_')[1] |
| asm_global_funcs = ''.join([' var ' + g.replace('.', '_') + '=global.' + g + ';\n' for g in maths]) + \ |
| ''.join([' var ' + g + '=env.' + math_fix(g) + ';\n' for g in basic_funcs + global_funcs]) |
| asm_global_vars = ''.join([' var ' + g + '=env.' + g + '|0;\n' for g in basic_vars + global_vars]) + \ |
| ''.join([' var ' + g + '=+env.' + g + ';\n' for g in basic_float_vars]) |
| # In linkable modules, we need to add some explicit globals for global variables that can be linked and used across modules |
| if settings.get('MAIN_MODULE') or settings.get('SIDE_MODULE'): |
| assert settings.get('TARGET_ASMJS_UNKNOWN_EMSCRIPTEN'), 'TODO: support x86 target when linking modules (needs offset of 4 and not 8 here)' |
| for key, value in forwarded_json['Variables']['globals'].iteritems(): |
| if value.get('linkable'): |
| init = forwarded_json['Variables']['indexedGlobals'][key] + 8 # 8 is Runtime.GLOBAL_BASE / STATIC_BASE |
| if settings.get('SIDE_MODULE'): init = '(H_BASE+' + str(init) + ')|0' |
| asm_global_vars += ' var %s=%s;\n' % (key, str(init)) |
| |
| # sent data |
| the_global = '{ ' + ', '.join(['"' + math_fix(s) + '": ' + s for s in fundamentals]) + ' }' |
| sending = '{ ' + ', '.join(['"' + math_fix(s) + '": ' + s for s in basic_funcs + global_funcs + basic_vars + basic_float_vars + global_vars]) + ' }' |
| # received |
| if not simple: |
| receiving = ';\n'.join(['var ' + s + ' = Module["' + s + '"] = asm["' + s + '"]' for s in exported_implemented_functions + function_tables]) |
| else: |
| receiving = 'var _main = Module["_main"] = asm;' |
| |
| # finalize |
| |
| if DEBUG: logging.debug('asm text sizes' + str([map(len, funcs_js), len(asm_setup), len(asm_global_vars), len(asm_global_funcs), len(pre_tables), len('\n'.join(function_tables_impls)), len(function_tables_defs.replace('\n', '\n ')), len(exports), len(the_global), len(sending), len(receiving)])) |
| |
| funcs_js = [''' |
| %s |
| function asmPrintInt(x, y) { |
| Module.print('int ' + x + ',' + y);// + ' ' + new Error().stack); |
| } |
| function asmPrintFloat(x, y) { |
| Module.print('float ' + x + ',' + y);// + ' ' + new Error().stack); |
| } |
| // EMSCRIPTEN_START_ASM |
| var asm = (function(global, env, buffer) { |
| %s |
| %s |
| ''' % (asm_setup, "'use asm';" if not forwarded_json['Types']['hasInlineJS'] and not settings['SIDE_MODULE'] and settings['ASM_JS'] == 1 else "'almost asm';", |
| ''' |
| var HEAP8 = new global.Int8Array(buffer); |
| var HEAP16 = new global.Int16Array(buffer); |
| var HEAP32 = new global.Int32Array(buffer); |
| var HEAPU8 = new global.Uint8Array(buffer); |
| var HEAPU16 = new global.Uint16Array(buffer); |
| var HEAPU32 = new global.Uint32Array(buffer); |
| var HEAPF32 = new global.Float32Array(buffer); |
| var HEAPF64 = new global.Float64Array(buffer); |
| ''' if not settings['ALLOW_MEMORY_GROWTH'] else ''' |
| var Int8View = global.Int8Array; |
| var Int16View = global.Int16Array; |
| var Int32View = global.Int32Array; |
| var Uint8View = global.Uint8Array; |
| var Uint16View = global.Uint16Array; |
| var Uint32View = global.Uint32Array; |
| var Float32View = global.Float32Array; |
| var Float64View = global.Float64Array; |
| var HEAP8 = new Int8View(buffer); |
| var HEAP16 = new Int16View(buffer); |
| var HEAP32 = new Int32View(buffer); |
| var HEAPU8 = new Uint8View(buffer); |
| var HEAPU16 = new Uint16View(buffer); |
| var HEAPU32 = new Uint32View(buffer); |
| var HEAPF32 = new Float32View(buffer); |
| var HEAPF64 = new Float64View(buffer); |
| var byteLength = global.byteLength; |
| ''') + '\n' + asm_global_vars + ''' |
| var __THREW__ = 0; |
| var threwValue = 0; |
| var setjmpId = 0; |
| var undef = 0; |
| var tempInt = 0, tempBigInt = 0, tempBigIntP = 0, tempBigIntS = 0, tempBigIntR = 0.0, tempBigIntI = 0, tempBigIntD = 0, tempValue = 0, tempDouble = 0.0; |
| ''' + ''.join([''' |
| var tempRet%d = 0;''' % i for i in range(10)]) + '\n' + asm_global_funcs] + [' var tempFloat = %s;\n' % ('Math_fround(0)' if settings.get('PRECISE_F32') else '0.0')] + ([' const f0 = Math_fround(0);\n'] if settings.get('PRECISE_F32') else []) + [''' |
| // EMSCRIPTEN_START_FUNCS |
| function stackAlloc(size) { |
| size = size|0; |
| var ret = 0; |
| ret = STACKTOP; |
| STACKTOP = (STACKTOP + size)|0; |
| STACKTOP = (STACKTOP + 7)&-8; |
| return ret|0; |
| } |
| function stackSave() { |
| return STACKTOP|0; |
| } |
| function stackRestore(top) { |
| top = top|0; |
| STACKTOP = top; |
| } |
| function setThrew(threw, value) { |
| threw = threw|0; |
| value = value|0; |
| if ((__THREW__|0) == 0) { |
| __THREW__ = threw; |
| threwValue = value; |
| } |
| } |
| function copyTempFloat(ptr) { |
| ptr = ptr|0; |
| HEAP8[tempDoublePtr>>0] = HEAP8[ptr>>0]; |
| HEAP8[tempDoublePtr+1>>0] = HEAP8[ptr+1>>0]; |
| HEAP8[tempDoublePtr+2>>0] = HEAP8[ptr+2>>0]; |
| HEAP8[tempDoublePtr+3>>0] = HEAP8[ptr+3>>0]; |
| } |
| function copyTempDouble(ptr) { |
| ptr = ptr|0; |
| HEAP8[tempDoublePtr>>0] = HEAP8[ptr>>0]; |
| HEAP8[tempDoublePtr+1>>0] = HEAP8[ptr+1>>0]; |
| HEAP8[tempDoublePtr+2>>0] = HEAP8[ptr+2>>0]; |
| HEAP8[tempDoublePtr+3>>0] = HEAP8[ptr+3>>0]; |
| HEAP8[tempDoublePtr+4>>0] = HEAP8[ptr+4>>0]; |
| HEAP8[tempDoublePtr+5>>0] = HEAP8[ptr+5>>0]; |
| HEAP8[tempDoublePtr+6>>0] = HEAP8[ptr+6>>0]; |
| HEAP8[tempDoublePtr+7>>0] = HEAP8[ptr+7>>0]; |
| } |
| ''' + ''.join([''' |
| function setTempRet%d(value) { |
| value = value|0; |
| tempRet%d = value; |
| } |
| ''' % (i, i) for i in range(10)]) + ''.join([''' |
| function getTempRet%d() { |
| return tempRet%d|0; |
| } |
| ''' % (i, i) for i in range(10)])] + [PostSets.js + '\n'] + funcs_js + [''' |
| %s |
| |
| return %s; |
| }) |
| // EMSCRIPTEN_END_ASM |
| (%s, %s, buffer); |
| %s; |
| ''' % (pre_tables + '\n'.join(function_tables_impls) + '\n' + function_tables_defs.replace('\n', '\n '), exports, the_global, sending, receiving)] |
| |
| if not settings.get('SIDE_MODULE'): |
| funcs_js.append(''' |
| Runtime.stackAlloc = asm['stackAlloc']; |
| Runtime.stackSave = asm['stackSave']; |
| Runtime.stackRestore = asm['stackRestore']; |
| Runtime.setTempRet0 = asm['setTempRet0']; |
| Runtime.getTempRet0 = asm['getTempRet0']; |
| ''') |
| |
| # Set function table masks |
| masks = {} |
| max_mask = 0 |
| for sig, table in last_forwarded_json['Functions']['tables'].iteritems(): |
| mask = table.count(',') |
| masks[sig] = str(mask) |
| max_mask = max(mask, max_mask) |
| def function_table_maskize(js, masks): |
| def fix(m): |
| sig = m.groups(0)[0] |
| return masks[sig] |
| return re.sub(r'{{{ FTM_([\w\d_$]+) }}}', lambda m: fix(m), js) # masks[m.groups(0)[0]] |
| funcs_js = map(lambda js: function_table_maskize(js, masks), funcs_js) |
| |
| if settings.get('DLOPEN_SUPPORT'): |
| funcs_js.append(''' |
| asm.maxFunctionIndex = %(max_mask)d; |
| DLFCN.registerFunctions(asm, %(max_mask)d+1, %(sigs)s, Module); |
| Module.SYMBOL_TABLE = SYMBOL_TABLE; |
| ''' % { 'max_mask': max_mask, 'sigs': str(map(str, last_forwarded_json['Functions']['tables'].keys())) }) |
| |
| else: |
| function_tables_defs = '\n'.join([table for table in last_forwarded_json['Functions']['tables'].itervalues()]) |
| outfile.write(function_tables_defs) |
| funcs_js = [''' |
| // EMSCRIPTEN_START_FUNCS |
| '''] + funcs_js + [''' |
| // EMSCRIPTEN_END_FUNCS |
| '''] |
| |
| # Create symbol table for self-dlopen |
| if settings.get('DLOPEN_SUPPORT'): |
| symbol_table = {} |
| for k, v in forwarded_json['Variables']['indexedGlobals'].iteritems(): |
| if forwarded_json['Variables']['globals'][k]['named']: |
| symbol_table[k] = str(v + forwarded_json['Runtime']['GLOBAL_BASE']) |
| for raw in last_forwarded_json['Functions']['tables'].itervalues(): |
| if raw == '': continue |
| table = map(string.strip, raw[raw.find('[')+1:raw.find(']')].split(",")) |
| for i in range(len(table)): |
| value = table[i] |
| if value != '0': |
| if settings.get('SIDE_MODULE'): |
| symbol_table[value] = 'FUNCTION_TABLE_OFFSET+' + str(i) |
| else: |
| symbol_table[value] = str(i) |
| outfile.write("var SYMBOL_TABLE = %s;" % json.dumps(symbol_table).replace('"', '')) |
| |
| for i in range(len(funcs_js)): # do this loop carefully to save memory |
| funcs_js_item = funcs_js[i] |
| funcs_js[i] = None |
| funcs_js_item = indexize(funcs_js_item) |
| funcs_js_item = blockaddrsize(funcs_js_item) |
| if WINDOWS: funcs_js_item = funcs_js_item.replace('\r\n', '\n') # Normalize to UNIX line endings, otherwise writing to text file will duplicate \r\n to \r\r\n! |
| outfile.write(funcs_js_item) |
| funcs_js = None |
| |
| indexized = indexize(post) |
| if WINDOWS: indexized = indexized.replace('\r\n', '\n') # Normalize to UNIX line endings, otherwise writing to text file will duplicate \r\n to \r\r\n! |
| outfile.write(indexized) |
| outfile.close() |
| if DEBUG: logging.debug(' emscript: phase 3 took %s seconds' % (time.time() - t)) |
| |
| # emscript_fast: emscript'en code using the 'fast' compilation path, using |
| # an LLVM backend |
| # FIXME: this is just a copy-paste of normal emscript(), and we trample it |
| # if the proper env var is set (see below). we should refactor to |
| # share code between the two, once emscript_fast stabilizes (or, |
| # leaving it separate like it is will make it trivial to rip out |
| # if the experiment fails) |
| |
| def emscript_fast(infile, settings, outfile, libraries=[], compiler_engine=None, |
| temp_files=None, DEBUG=None, DEBUG_CACHE=None): |
| """Runs the emscripten LLVM-to-JS compiler. |
| |
| Args: |
| infile: The path to the input LLVM assembly file. |
| settings: JSON-formatted settings that override the values |
| defined in src/settings.js. |
| outfile: The file where the output is written. |
| """ |
| |
| assert settings['ASM_JS'], 'fastcomp is asm.js-only (mode 1 or 2)' |
| |
| success = False |
| |
| try: |
| |
| # Overview: |
| # * Run LLVM backend to emit JS. JS includes function bodies, memory initializer, |
| # and various metadata |
| # * Run compiler.js on the metadata to emit the shell js code, pre/post-ambles, |
| # JS library dependencies, etc. |
| |
| temp_js = temp_files.get('.4.js').name |
| backend_compiler = os.path.join(shared.LLVM_ROOT, 'llc') |
| backend_args = [backend_compiler, infile, '-march=js', '-filetype=asm', '-o', temp_js] |
| if settings['PRECISE_F32']: |
| backend_args += ['-emscripten-precise-f32'] |
| if settings['WARN_UNALIGNED']: |
| backend_args += ['-emscripten-warn-unaligned'] |
| if settings['RESERVED_FUNCTION_POINTERS'] > 0: |
| backend_args += ['-emscripten-reserved-function-pointers=%d' % settings['RESERVED_FUNCTION_POINTERS']] |
| if settings['ASSERTIONS'] > 0: |
| backend_args += ['-emscripten-assertions=%d' % settings['ASSERTIONS']] |
| if settings['ALIASING_FUNCTION_POINTERS'] == 0: |
| backend_args += ['-emscripten-no-aliasing-function-pointers'] |
| if settings['GLOBAL_BASE'] >= 0: |
| backend_args += ['-emscripten-global-base=%d' % settings['GLOBAL_BASE']] |
| backend_args += ['-O' + str(settings['OPT_LEVEL'])] |
| if DEBUG: |
| logging.debug('emscript: llvm backend: ' + ' '.join(backend_args)) |
| t = time.time() |
| shared.jsrun.timeout_run(subprocess.Popen(backend_args, stdout=subprocess.PIPE)) |
| if DEBUG: |
| logging.debug(' emscript: llvm backend took %s seconds' % (time.time() - t)) |
| t = time.time() |
| |
| # Split up output |
| backend_output = open(temp_js).read() |
| #if DEBUG: print >> sys.stderr, backend_output |
| |
| start_funcs_marker = '// EMSCRIPTEN_START_FUNCTIONS' |
| end_funcs_marker = '// EMSCRIPTEN_END_FUNCTIONS' |
| metadata_split_marker = '// EMSCRIPTEN_METADATA' |
| |
| start_funcs = backend_output.index(start_funcs_marker) |
| end_funcs = backend_output.rindex(end_funcs_marker) |
| metadata_split = backend_output.rindex(metadata_split_marker) |
| |
| funcs = backend_output[start_funcs+len(start_funcs_marker):end_funcs] |
| metadata_raw = backend_output[metadata_split+len(metadata_split_marker):] |
| #if DEBUG: print >> sys.stderr, "METAraw", metadata_raw |
| metadata = json.loads(metadata_raw) |
| mem_init = backend_output[end_funcs+len(end_funcs_marker):metadata_split] |
| #if DEBUG: print >> sys.stderr, "FUNCS", funcs |
| #if DEBUG: print >> sys.stderr, "META", metadata |
| #if DEBUG: print >> sys.stderr, "meminit", mem_init |
| |
| # if emulating pointer casts, force all tables to the size of the largest |
| if settings['EMULATE_FUNCTION_POINTER_CASTS']: |
| max_size = 0 |
| for k, v in metadata['tables'].iteritems(): |
| max_size = max(max_size, v.count(',')+1) |
| for k, v in metadata['tables'].iteritems(): |
| curr = v.count(',')+1 |
| if curr < max_size: |
| metadata['tables'][k] = v.replace(']', (',0'*(max_size - curr)) + ']') |
| |
| # function table masks |
| |
| table_sizes = {} |
| for k, v in metadata['tables'].iteritems(): |
| table_sizes[k] = str(v.count(',')) # undercounts by one, but that is what we want |
| #if settings['ASSERTIONS'] >= 2 and table_sizes[k] == 0: |
| # print >> sys.stderr, 'warning: no function pointers with signature ' + k + ', but there is a call, which will abort if it occurs (this can result from undefined behavior, check for compiler warnings on your source files and consider -Werror)' |
| funcs = re.sub(r"#FM_(\w+)#", lambda m: table_sizes[m.groups(0)[0]], funcs) |
| |
| # fix +float into float.0, if not running js opts |
| if not settings['RUNNING_JS_OPTS']: |
| def fix_dot_zero(m): |
| num = m.group(3) |
| # TODO: handle 0x floats? |
| if num.find('.') < 0: |
| e = num.find('e'); |
| if e < 0: |
| num += '.0' |
| else: |
| num = num[:e] + '.0' + num[e:] |
| return m.group(1) + m.group(2) + num |
| funcs = re.sub(r'([(=,+\-*/%<>:?] *)\+(-?)((0x)?[0-9a-f]*\.?[0-9]+([eE][-+]?[0-9]+)?)', lambda m: fix_dot_zero(m), funcs) |
| |
| # js compiler |
| |
| if DEBUG: logging.debug('emscript: js compiler glue') |
| |
| # Settings changes |
| assert settings['TARGET_ASMJS_UNKNOWN_EMSCRIPTEN'] == 1 |
| settings['TARGET_ASMJS_UNKNOWN_EMSCRIPTEN'] = 2 |
| i64_funcs = ['i64Add', 'i64Subtract', '__muldi3', '__divdi3', '__udivdi3', '__remdi3', '__uremdi3'] |
| for i64_func in i64_funcs: |
| if i64_func in metadata['declares']: |
| settings['PRECISE_I64_MATH'] = 2 |
| break |
| |
| metadata['declares'] = filter(lambda i64_func: i64_func not in ['getHigh32', 'setHigh32', '__muldi3', '__divdi3', '__remdi3', '__udivdi3', '__uremdi3'], metadata['declares']) # FIXME: do these one by one as normal js lib funcs |
| |
| # Integrate info from backend |
| settings['DEFAULT_LIBRARY_FUNCS_TO_INCLUDE'] = list( |
| set(settings['DEFAULT_LIBRARY_FUNCS_TO_INCLUDE'] + map(shared.JS.to_nice_ident, metadata['declares'])).difference( |
| map(lambda x: x[1:], metadata['implementedFunctions']) |
| ) |
| ) + map(lambda x: x[1:], metadata['externs']) |
| if metadata['simd']: |
| settings['SIMD'] = 1 |
| if metadata['cantValidate'] and settings['ASM_JS'] != 2: |
| logging.warning('disabling asm.js validation due to use of non-supported features: ' + metadata['cantValidate']) |
| settings['ASM_JS'] = 2 |
| |
| # Save settings to a file to work around v8 issue 1579 |
| settings_file = temp_files.get('.txt').name |
| def save_settings(): |
| global settings_text |
| settings_text = json.dumps(settings, sort_keys=True) |
| s = open(settings_file, 'w') |
| s.write(settings_text) |
| s.close() |
| save_settings() |
| |
| # Call js compiler |
| if DEBUG: t = time.time() |
| out = jsrun.run_js(path_from_root('src', 'compiler.js'), compiler_engine, |
| [settings_file, ';', 'glue'] + libraries, stdout=subprocess.PIPE, stderr=STDERR_FILE, |
| cwd=path_from_root('src'), error_limit=300) |
| assert '//FORWARDED_DATA:' in out, 'Did not receive forwarded data in pre output - process failed?' |
| glue, forwarded_data = out.split('//FORWARDED_DATA:') |
| |
| if DEBUG: |
| logging.debug(' emscript: glue took %s seconds' % (time.time() - t)) |
| t = time.time() |
| |
| last_forwarded_json = forwarded_json = json.loads(forwarded_data) |
| |
| # merge in information from llvm backend |
| |
| last_forwarded_json['Functions']['tables'] = metadata['tables'] |
| |
| '''indexed_functions = set() |
| for key in forwarded_json['Functions']['indexedFunctions'].iterkeys(): |
| indexed_functions.add(key)''' |
| |
| pre, post = glue.split('// EMSCRIPTEN_END_FUNCS') |
| |
| #print >> sys.stderr, 'glue:', pre, '\n\n||||||||||||||||\n\n', post, '...............' |
| |
| # memory and global initializers |
| |
| global_initializers = ', '.join(map(lambda i: '{ func: function() { %s() } }' % i, metadata['initializers'])) |
| |
| if settings['SIMD'] == 1: |
| pre = open(path_from_root(os.path.join('src', 'ecmascript_simd.js'))).read() + '\n\n' + pre |
| |
| staticbump = mem_init.count(',')+1 |
| while staticbump % 16 != 0: staticbump += 1 |
| pre = pre.replace('STATICTOP = STATIC_BASE + 0;', '''STATICTOP = STATIC_BASE + %d; |
| /* global initializers */ __ATINIT__.push(%s); |
| %s''' % (staticbump, global_initializers, mem_init)) # XXX wrong size calculation! |
| |
| funcs_js = [funcs] |
| parts = pre.split('// ASM_LIBRARY FUNCTIONS\n') |
| if len(parts) > 1: |
| pre = parts[0] |
| funcs_js.append(parts[1]) |
| |
| # merge forwarded data |
| settings['EXPORTED_FUNCTIONS'] = forwarded_json['EXPORTED_FUNCTIONS'] |
| all_exported_functions = set(settings['EXPORTED_FUNCTIONS']) # both asm.js and otherwise |
| for additional_export in settings['DEFAULT_LIBRARY_FUNCS_TO_INCLUDE']: # additional functions to export from asm, if they are implemented |
| all_exported_functions.add('_' + additional_export) |
| if settings['EXPORT_FUNCTION_TABLES']: |
| for table in last_forwarded_json['Functions']['tables'].values(): |
| for func in table.split('[')[1].split(']')[0].split(','): |
| if func[0] == '_': |
| all_exported_functions.add(func) |
| exported_implemented_functions = set(metadata['exports']) |
| export_bindings = settings['EXPORT_BINDINGS'] |
| export_all = settings['EXPORT_ALL'] |
| all_implemented = metadata['implementedFunctions'] + forwarded_json['Functions']['implementedFunctions'].keys() # XXX perf? |
| for key in all_implemented: |
| if key in all_exported_functions or export_all or (export_bindings and key.startswith('_emscripten_bind')): |
| exported_implemented_functions.add(key) |
| implemented_functions = set(metadata['implementedFunctions']) |
| if settings['ASSERTIONS'] and settings.get('ORIGINAL_EXPORTED_FUNCTIONS'): |
| original_exports = settings['ORIGINAL_EXPORTED_FUNCTIONS'] |
| if original_exports[0] == '@': original_exports = json.loads(open(original_exports[1:]).read()) |
| for requested in original_exports: |
| if requested not in all_implemented and \ |
| requested != '_malloc': # special-case malloc, EXPORTED by default for internal use, but we bake in a trivial allocator and warn at runtime if used in ASSERTIONS |
| logging.warning('function requested to be exported, but not implemented: "%s"', requested) |
| |
| # Add named globals |
| named_globals = '\n'.join(['var %s = %s;' % (k, v) for k, v in metadata['namedGlobals'].iteritems()]) |
| |
| asm_consts = [0]*len(metadata['asmConsts']) |
| for k, v in metadata['asmConsts'].iteritems(): |
| const = str(v) |
| if const[0] == '"' and const[-1] == '"': |
| const = const[1:-1] |
| const = '{ ' + const + ' }' |
| i = 0 |
| args = [] |
| while ('$' + str(i)) in const: |
| args.append('$' + str(i)) |
| i += 1 |
| const = 'function(' + ', '.join(args ) + ') ' + const |
| asm_consts[int(k)] = const |
| |
| asm_const_funcs = [] |
| for arity in metadata['asmConstArities']: |
| forwarded_json['Functions']['libraryFunctions']['_emscripten_asm_const_%d' % arity] = 1 |
| args = ['a%d' % i for i in range(arity)] |
| all_args = ['code'] + args |
| asm_const_funcs.append(r''' |
| function _emscripten_asm_const_%d(%s) { |
| return Runtime.asmConsts[code](%s) | 0; |
| }''' % (arity, ', '.join(all_args), ', '.join(args))) |
| |
| pre = pre.replace('// === Body ===', '// === Body ===\n' + named_globals + '\nRuntime.asmConsts = [' + ', '.join(asm_consts) + '];\n' + '\n'.join(asm_const_funcs) + '\n') |
| |
| #if DEBUG: outfile.write('// pre\n') |
| outfile.write(pre) |
| pre = None |
| |
| #if DEBUG: outfile.write('// funcs\n') |
| |
| # when emulating function pointer casts, we need to know what is the target of each pointer |
| if settings['EMULATE_FUNCTION_POINTER_CASTS']: |
| function_pointer_targets = {} |
| for sig, table in last_forwarded_json['Functions']['tables'].iteritems(): |
| start = table.index('[') |
| end = table.rindex(']') |
| body = table[start+1:end].split(',') |
| parsed = map(lambda x: x.strip(), body) |
| for i in range(len(parsed)): |
| if parsed[i] != '0': |
| assert i not in function_pointer_targets |
| function_pointer_targets[i] = [sig, str(parsed[i])] |
| |
| # Move preAsms to their right place |
| def move_preasm(m): |
| contents = m.groups(0)[0] |
| outfile.write(contents + '\n') |
| return '' |
| if not settings['BOOTSTRAPPING_STRUCT_INFO']: |
| funcs_js[1] = re.sub(r'/\* PRE_ASM \*/(.*)\n', lambda m: move_preasm(m), funcs_js[1]) |
| |
| class Counter: |
| i = 0 |
| j = 0 |
| if 'pre' in last_forwarded_json['Functions']['tables']: |
| pre_tables = last_forwarded_json['Functions']['tables']['pre'] |
| del last_forwarded_json['Functions']['tables']['pre'] |
| else: |
| pre_tables = '' |
| |
| def unfloat(s): |
| return 'd' if s == 'f' else s # lower float to double for ffis |
| |
| if settings['ASSERTIONS'] >= 2: |
| debug_tables = {} |
| |
| def make_params(sig): return ','.join(['p%d' % p for p in range(len(sig)-1)]) |
| def make_coerced_params(sig): return ','.join([shared.JS.make_coercion('p%d', unfloat(sig[p+1]), settings) % p for p in range(len(sig)-1)]) |
| def make_coercions(sig): return ';'.join(['p%d = %s' % (p, shared.JS.make_coercion('p%d' % p, sig[p+1], settings)) for p in range(len(sig)-1)]) + ';' |
| def make_func(name, code, params, coercions): return 'function %s(%s) { %s %s }' % (name, params, coercions, code) |
| |
| def make_table(sig, raw): |
| params = make_params(sig) |
| coerced_params = make_coerced_params(sig) |
| coercions = make_coercions(sig) |
| def make_bad(target=None): |
| i = Counter.i |
| Counter.i += 1 |
| if target is None: target = i |
| name = 'b' + str(i) |
| if not settings['ASSERTIONS']: |
| code = 'abort(%s);' % target |
| else: |
| code = 'nullFunc_' + sig + '(%d);' % target |
| if sig[0] != 'v': |
| code += 'return %s' % shared.JS.make_initializer(sig[0], settings) + ';' |
| return name, make_func(name, code, params, coercions) |
| bad, bad_func = make_bad() # the default bad func |
| if settings['ASSERTIONS'] <= 1: |
| Counter.pre = [bad_func] |
| else: |
| Counter.pre = [] |
| start = raw.index('[') |
| end = raw.rindex(']') |
| body = raw[start+1:end].split(',') |
| for j in range(settings['RESERVED_FUNCTION_POINTERS']): |
| curr = 'jsCall_%s_%s' % (sig, j) |
| body[settings['FUNCTION_POINTER_ALIGNMENT'] * (1 + j)] = curr |
| implemented_functions.add(curr) |
| Counter.j = 0 |
| def fix_item(item): |
| j = Counter.j |
| Counter.j += 1 |
| newline = Counter.j % 30 == 29 |
| if item == '0': |
| if j > 0 and settings['EMULATE_FUNCTION_POINTER_CASTS'] and j in function_pointer_targets: # emulate all non-null pointer calls, if asked to |
| proper_sig, proper_target = function_pointer_targets[j] |
| def make_emulated_param(i): |
| if i >= len(sig): return shared.JS.make_initializer(proper_sig[i], settings) # extra param, just send a zero |
| return shared.JS.make_coercion('p%d' % (i-1), proper_sig[i], settings, convert_from=sig[i]) |
| proper_code = proper_target + '(' + ','.join(map(lambda i: make_emulated_param(i+1), range(len(proper_sig)-1))) + ')' |
| if proper_sig[0] != 'v': |
| # proper sig has a return, which the wrapper may or may not use |
| proper_code = shared.JS.make_coercion(proper_code, proper_sig[0], settings) |
| if proper_sig[0] != sig[0]: |
| # first coercion ensured we call the target ok; this one ensures we return the right type in the wrapper |
| proper_code = shared.JS.make_coercion(proper_code, sig[0], settings, convert_from=proper_sig[0]) |
| if sig[0] != 'v': |
| proper_code = 'return ' + proper_code |
| else: |
| # proper sig has no return, we may need a fake return |
| if sig[0] != 'v': |
| proper_code = 'return ' + shared.JS.make_initializer(sig[0], settings) |
| name = 'fpemu_%s_%d' % (sig, j) |
| wrapper = make_func(name, proper_code, params, coercions) |
| Counter.pre.append(wrapper) |
| return name if not newline else (name + '\n') |
| if settings['ASSERTIONS'] <= 1: |
| return bad if not newline else (bad + '\n') |
| else: |
| specific_bad, specific_bad_func = make_bad(j) |
| Counter.pre.append(specific_bad_func) |
| return specific_bad if not newline else (specific_bad + '\n') |
| if item not in implemented_functions: |
| # this is imported into asm, we must wrap it |
| call_ident = item |
| if call_ident in metadata['redirects']: call_ident = metadata['redirects'][call_ident] |
| if not call_ident.startswith('_') and not call_ident.startswith('Math_'): call_ident = '_' + call_ident |
| code = call_ident + '(' + coerced_params + ')' |
| if sig[0] != 'v': |
| # ffis cannot return float |
| if sig[0] == 'f': code = '+' + code |
| code = 'return ' + shared.JS.make_coercion(code, sig[0], settings) |
| code += ';' |
| Counter.pre.append(make_func(item + '__wrapper', code, params, coercions)) |
| return item + '__wrapper' |
| return item if not newline else (item + '\n') |
| if settings['ASSERTIONS'] >= 2: |
| debug_tables[sig] = body |
| body = ','.join(map(fix_item, body)) |
| return ('\n'.join(Counter.pre), ''.join([raw[:start+1], body, raw[end:]])) |
| |
| infos = [make_table(sig, raw) for sig, raw in last_forwarded_json['Functions']['tables'].iteritems()] |
| Counter.pre = [] |
| |
| function_tables_defs = '\n'.join([info[0] for info in infos]) + '\n\n// EMSCRIPTEN_END_FUNCS\n' + '\n'.join([info[1] for info in infos]) |
| |
| asm_setup = '' |
| maths = ['Math.' + func for func in ['floor', 'abs', 'sqrt', 'pow', 'cos', 'sin', 'tan', 'acos', 'asin', 'atan', 'atan2', 'exp', 'log', 'ceil', 'imul', 'min', 'clz32']] |
| simdfloattypes = ['float32x4'] |
| simdinttypes = ['int32x4'] |
| simdtypes = simdfloattypes + simdinttypes |
| simdfuncs = ['check', 'add', 'sub', 'neg', 'mul', |
| 'equal', 'lessThan', 'greaterThan', |
| 'notEqual', 'lessThanOrEqual', 'greaterThanOrEqual', |
| 'select', 'and', 'or', 'xor', 'not', |
| 'splat', 'swizzle', 'shuffle', |
| 'withX', 'withY', 'withZ', 'withW', |
| 'load', 'store', 'loadX', 'storeX', 'loadXY', 'storeXY', 'loadXYZ', 'storeXYZ'] |
| simdfloatfuncs = simdfuncs + ['div', 'min', 'max', 'minNum', 'maxNum', 'sqrt', |
| 'abs', 'fromInt32x4', 'fromInt32x4Bits', |
| 'reciprocalApproximation', 'reciprocalSqrtApproximation']; |
| simdintfuncs = simdfuncs + ['fromFloat32x4', 'fromFloat32x4Bits', |
| 'shiftRightArithmeticByScalar', |
| 'shiftRightLogicalByScalar', |
| 'shiftLeftByScalar']; |
| fundamentals = ['Math', 'Int8Array', 'Int16Array', 'Int32Array', 'Uint8Array', 'Uint16Array', 'Uint32Array', 'Float32Array', 'Float64Array', 'NaN', 'Infinity'] |
| if metadata['simd']: |
| fundamentals += ['SIMD'] |
| if settings['ALLOW_MEMORY_GROWTH']: fundamentals.append('byteLength') |
| math_envs = [] |
| |
| provide_fround = settings['PRECISE_F32'] or settings['SIMD'] |
| |
| if provide_fround: maths += ['Math.fround'] |
| |
| basic_funcs = ['abort', 'assert'] + [m.replace('.', '_') for m in math_envs] |
| if settings['SAFE_HEAP']: basic_funcs += ['SAFE_HEAP_LOAD', 'SAFE_HEAP_STORE', 'SAFE_FT_MASK'] |
| if settings['CHECK_HEAP_ALIGN']: basic_funcs += ['CHECK_ALIGN_2', 'CHECK_ALIGN_4', 'CHECK_ALIGN_8'] |
| if settings['ASSERTIONS']: |
| if settings['ASSERTIONS'] >= 2: import difflib |
| for sig in last_forwarded_json['Functions']['tables'].iterkeys(): |
| basic_funcs += ['nullFunc_' + sig] |
| if settings['ASSERTIONS'] <= 1: |
| extra = ' Module["printErr"]("Build with ASSERTIONS=2 for more info.");' |
| pointer = ' ' |
| else: |
| pointer = ' \'" + x + "\' ' |
| asm_setup += '\nvar debug_table_' + sig + ' = ' + json.dumps(debug_tables[sig]) + ';' |
| extra = ' Module["printErr"]("This pointer might make sense in another type signature: ' |
| # sort signatures, attempting to show most likely related ones first |
| sigs = last_forwarded_json['Functions']['tables'].keys() |
| def keyfunc(other): |
| ret = 0 |
| minlen = min(len(other), len(sig)) |
| maxlen = min(len(other), len(sig)) |
| if other.startswith(sig) or sig.startswith(other): ret -= 1000 # prioritize prefixes, could be dropped params |
| ret -= 133*difflib.SequenceMatcher(a=other, b=sig).ratio() # prioritize on diff similarity |
| ret += 15*abs(len(other) - len(sig))/float(maxlen) # deprioritize the bigger the length difference is |
| for i in range(minlen): |
| if other[i] == sig[i]: ret -= 5/float(maxlen) # prioritize on identically-placed params |
| ret += 20*len(other) # deprioritize on length |
| return ret |
| sigs.sort(key=keyfunc) |
| for other in sigs: |
| if other != sig: |
| extra += other + ': " + debug_table_' + other + '[x] + " ' |
| extra += '"); ' |
| asm_setup += '\nfunction nullFunc_' + sig + '(x) { Module["printErr"]("Invalid function pointer' + pointer + 'called with signature \'' + sig + '\'. ' + \ |
| 'Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? ' + \ |
| 'Or calling a function with an incorrect type, which will fail? ' + \ |
| '(it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)' + \ |
| '"); ' + extra + ' abort(x) }\n' |
| |
| basic_vars = ['STACKTOP', 'STACK_MAX', 'tempDoublePtr', 'ABORT'] |
| basic_float_vars = [] |
| |
| if metadata.get('preciseI64MathUsed'): |
| basic_vars += ['cttz_i8'] |
| else: |
| if forwarded_json['Functions']['libraryFunctions'].get('_llvm_cttz_i32'): |
| basic_vars += ['cttz_i8'] |
| |
| if settings.get('DLOPEN_SUPPORT'): |
| for sig in last_forwarded_json['Functions']['tables'].iterkeys(): |
| basic_vars.append('F_BASE_%s' % sig) |
| asm_setup += ' var F_BASE_%s = %s;\n' % (sig, 'FUNCTION_TABLE_OFFSET' if settings.get('SIDE_MODULE') else '0') + '\n' |
| |
| asm_runtime_funcs = ['stackAlloc', 'stackSave', 'stackRestore', 'setThrew', 'setTempRet0', 'getTempRet0'] |
| |
| # See if we need ASYNCIFY functions |
| # We might not need them even if ASYNCIFY is enabled |
| need_asyncify = '_emscripten_alloc_async_context' in exported_implemented_functions |
| if need_asyncify: |
| basic_vars += ['___async', '___async_unwind', '___async_retval', '___async_cur_frame'] |
| asm_runtime_funcs += ['setAsync'] |
| |
| if settings.get('EMTERPRETIFY'): |
| asm_runtime_funcs += ['emterpret'] |
| if settings.get('EMTERPRETIFY_ASYNC'): |
| asm_runtime_funcs += ['setAsyncState', 'emtStackSave'] |
| |
| # function tables |
| function_tables = ['dynCall_' + table for table in last_forwarded_json['Functions']['tables']] |
| function_tables_impls = [] |
| |
| for sig in last_forwarded_json['Functions']['tables'].iterkeys(): |
| args = ','.join(['a' + str(i) for i in range(1, len(sig))]) |
| arg_coercions = ' '.join(['a' + str(i) + '=' + shared.JS.make_coercion('a' + str(i), sig[i], settings) + ';' for i in range(1, len(sig))]) |
| coerced_args = ','.join([shared.JS.make_coercion('a' + str(i), sig[i], settings) for i in range(1, len(sig))]) |
| ret = ('return ' if sig[0] != 'v' else '') + shared.JS.make_coercion('FUNCTION_TABLE_%s[index&{{{ FTM_%s }}}](%s)' % (sig, sig, coerced_args), sig[0], settings) |
| function_tables_impls.append(''' |
| function dynCall_%s(index%s%s) { |
| index = index|0; |
| %s |
| %s; |
| } |
| ''' % (sig, ',' if len(sig) > 1 else '', args, arg_coercions, ret)) |
| |
| ffi_args = ','.join([shared.JS.make_coercion('a' + str(i), sig[i], settings, ffi_arg=True) for i in range(1, len(sig))]) |
| for i in range(settings['RESERVED_FUNCTION_POINTERS']): |
| jsret = ('return ' if sig[0] != 'v' else '') + shared.JS.make_coercion('jsCall_%s(%d%s%s)' % (sig, i, ',' if ffi_args else '', ffi_args), sig[0], settings, ffi_result=True) |
| function_tables_impls.append(''' |
| function jsCall_%s_%s(%s) { |
| %s |
| %s; |
| } |
| |
| ''' % (sig, i, args, arg_coercions, jsret)) |
| shared.Settings.copy(settings) |
| asm_setup += '\n' + shared.JS.make_invoke(sig) + '\n' |
| basic_funcs.append('invoke_%s' % sig) |
| if settings.get('RESERVED_FUNCTION_POINTERS'): |
| asm_setup += '\n' + shared.JS.make_jscall(sig) + '\n' |
| basic_funcs.append('jsCall_%s' % sig) |
| if settings.get('DLOPEN_SUPPORT'): |
| asm_setup += '\n' + shared.JS.make_extcall(sig) + '\n' |
| basic_funcs.append('extCall_%s' % sig) |
| |
| def quote(prop): |
| if settings['CLOSURE_COMPILER'] == 2: |
| return "'" + prop + "'" |
| else: |
| return prop |
| |
| def access_quote(prop): |
| if settings['CLOSURE_COMPILER'] == 2: |
| return "['" + prop + "']" |
| else: |
| return '.' + prop |
| |
| # calculate exports |
| exported_implemented_functions = list(exported_implemented_functions) + metadata['initializers'] |
| exported_implemented_functions.append('runPostSets') |
| if settings['ALLOW_MEMORY_GROWTH']: |
| exported_implemented_functions.append('_emscripten_replace_memory') |
| exports = [] |
| for export in exported_implemented_functions + asm_runtime_funcs + function_tables: |
| exports.append(quote(export) + ": " + export) |
| exports = '{ ' + ', '.join(exports) + ' }' |
| # calculate globals |
| try: |
| del forwarded_json['Variables']['globals']['_llvm_global_ctors'] # not a true variable |
| except: |
| pass |
| # If no named globals, only need externals |
| global_vars = metadata['externs'] #+ forwarded_json['Variables']['globals'] |
| global_funcs = list(set([key for key, value in forwarded_json['Functions']['libraryFunctions'].iteritems() if value != 2]).difference(set(global_vars)).difference(implemented_functions)) |
| def math_fix(g): |
| return g if not g.startswith('Math_') else g.split('_')[1] |
| asm_global_funcs = ''.join([' var ' + g.replace('.', '_') + '=global' + access_quote(g) + ';\n' for g in maths]); |
| asm_global_funcs += ''.join([' var ' + g + '=env' + access_quote(math_fix(g)) + ';\n' for g in basic_funcs + global_funcs]) |
| if metadata['simd']: |
| asm_global_funcs += ''.join([' var SIMD_' + ty + '=global' + access_quote('SIMD') + access_quote(ty) + ';\n' for ty in simdtypes]) |
| asm_global_funcs += ''.join([' var SIMD_' + ty + '_' + g + '=SIMD_' + ty + access_quote(g) + ';\n' for ty in simdinttypes for g in simdintfuncs]) |
| asm_global_funcs += ''.join([' var SIMD_' + ty + '_' + g + '=SIMD_' + ty + access_quote(g) + ';\n' for ty in simdfloattypes for g in simdfloatfuncs]) |
| asm_global_vars = ''.join([' var ' + g + '=env' + access_quote(g) + '|0;\n' for g in basic_vars + global_vars]) |
| # In linkable modules, we need to add some explicit globals for global variables that can be linked and used across modules |
| if settings.get('MAIN_MODULE') or settings.get('SIDE_MODULE'): |
| assert settings.get('TARGET_ASMJS_UNKNOWN_EMSCRIPTEN'), 'TODO: support x86 target when linking modules (needs offset of 4 and not 8 here)' |
| for key, value in forwarded_json['Variables']['globals'].iteritems(): |
| if value.get('linkable'): |
| init = forwarded_json['Variables']['indexedGlobals'][key] + 8 # 8 is Runtime.GLOBAL_BASE / STATIC_BASE |
| if settings.get('SIDE_MODULE'): init = '(H_BASE+' + str(init) + ')|0' |
| asm_global_vars += ' var %s=%s;\n' % (key, str(init)) |
| |
| if settings['POINTER_MASKING']: |
| for i in [0, 1, 2, 3]: |
| if settings['POINTER_MASKING_DYNAMIC']: |
| asm_global_vars += ' const MASK%d=env' % i + access_quote('MASK%d' % i) + '|0;\n'; |
| basic_vars += ['MASK%d' %i] |
| else: |
| asm_global_vars += ' const MASK%d=%d;\n' % (i, (settings['TOTAL_MEMORY']-1) & (~((2**i)-1))); |
| |
| # sent data |
| the_global = '{ ' + ', '.join(['"' + math_fix(s) + '": ' + s for s in fundamentals]) + ' }' |
| sending = '{ ' + ', '.join(['"' + math_fix(s) + '": ' + s for s in basic_funcs + global_funcs + basic_vars + basic_float_vars + global_vars]) + ' }' |
| # received |
| receiving = '' |
| if settings['ASSERTIONS']: |
| # assert on the runtime being in a valid state when calling into compiled code. The only exceptions are |
| # some support code like malloc TODO: verify that malloc is actually safe to use that way |
| receiving = '\n'.join(['var real_' + s + ' = asm["' + s + '"]; asm["' + s + '''"] = function() { |
| assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)'); |
| assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)'); |
| return real_''' + s + '''.apply(null, arguments); |
| }; |
| ''' for s in exported_implemented_functions if s not in ['_malloc', '_free', '_memcpy', '_memset']]) |
| |
| if not settings['SWAPPABLE_ASM_MODULE']: |
| receiving += ';\n'.join(['var ' + s + ' = Module["' + s + '"] = asm["' + s + '"]' for s in exported_implemented_functions + function_tables]) |
| else: |
| receiving += 'Module["asm"] = asm;\n' + ';\n'.join(['var ' + s + ' = Module["' + s + '"] = function() { return Module["asm"]["' + s + '"].apply(null, arguments) }' for s in exported_implemented_functions + function_tables]) |
| |
| if settings['EXPORT_FUNCTION_TABLES']: |
| receiving += '\n' |
| for table in last_forwarded_json['Functions']['tables'].values(): |
| tableName = table.split()[1] |
| table = table.replace('var ' + tableName, 'var ' + tableName + ' = Module["' + tableName + '"]') |
| receiving += table + '\n' |
| |
| # finalize |
| |
| if DEBUG: logging.debug('asm text sizes' + str([map(len, funcs_js), len(asm_setup), len(asm_global_vars), len(asm_global_funcs), len(pre_tables), len('\n'.join(function_tables_impls)), len(function_tables_defs.replace('\n', '\n ')), len(exports), len(the_global), len(sending), len(receiving)])) |
| |
| funcs_js = [''' |
| %s |
| Module%s = %s; |
| Module%s = %s; |
| // EMSCRIPTEN_START_ASM |
| var asm = (function(global, env, buffer) { |
| %s |
| %s |
| ''' % (asm_setup, |
| access_quote('asmGlobalArg'), the_global, |
| access_quote('asmLibraryArg'), sending, |
| "'use asm';" if not metadata.get('hasInlineJS') and not settings['SIDE_MODULE'] and settings['ASM_JS'] == 1 else "'almost asm';", ''' |
| var HEAP8 = new global%s(buffer); |
| var HEAP16 = new global%s(buffer); |
| var HEAP32 = new global%s(buffer); |
| var HEAPU8 = new global%s(buffer); |
| var HEAPU16 = new global%s(buffer); |
| var HEAPU32 = new global%s(buffer); |
| var HEAPF32 = new global%s(buffer); |
| var HEAPF64 = new global%s(buffer); |
| ''' % (access_quote('Int8Array'), |
| access_quote('Int16Array'), |
| access_quote('Int32Array'), |
| access_quote('Uint8Array'), |
| access_quote('Uint16Array'), |
| access_quote('Uint32Array'), |
| access_quote('Float32Array'), |
| access_quote('Float64Array')) if not settings['ALLOW_MEMORY_GROWTH'] else ''' |
| var Int8View = global%s; |
| var Int16View = global%s; |
| var Int32View = global%s; |
| var Uint8View = global%s; |
| var Uint16View = global%s; |
| var Uint32View = global%s; |
| var Float32View = global%s; |
| var Float64View = global%s; |
| var HEAP8 = new Int8View(buffer); |
| var HEAP16 = new Int16View(buffer); |
| var HEAP32 = new Int32View(buffer); |
| var HEAPU8 = new Uint8View(buffer); |
| var HEAPU16 = new Uint16View(buffer); |
| var HEAPU32 = new Uint32View(buffer); |
| var HEAPF32 = new Float32View(buffer); |
| var HEAPF64 = new Float64View(buffer); |
| var byteLength = global.byteLength; |
| ''' % (access_quote('Int8Array'), |
| access_quote('Int16Array'), |
| access_quote('Int32Array'), |
| access_quote('Uint8Array'), |
| access_quote('Uint16Array'), |
| access_quote('Uint32Array'), |
| access_quote('Float32Array'), |
| access_quote('Float64Array'))) + '\n' + asm_global_vars + (''' |
| var __THREW__ = 0; |
| var threwValue = 0; |
| var setjmpId = 0; |
| var undef = 0; |
| var nan = global%s, inf = global%s; |
| var tempInt = 0, tempBigInt = 0, tempBigIntP = 0, tempBigIntS = 0, tempBigIntR = 0.0, tempBigIntI = 0, tempBigIntD = 0, tempValue = 0, tempDouble = 0.0; |
| ''' % (access_quote('NaN'), access_quote('Infinity'))) + ''.join([''' |
| var tempRet%d = 0;''' % i for i in range(10)]) + '\n' + asm_global_funcs] + \ |
| [' var tempFloat = %s;\n' % ('Math_fround(0)' if provide_fround else '0.0')] + \ |
| [' var asyncState = 0;\n' if settings.get('EMTERPRETIFY_ASYNC') else ''] + \ |
| ([' const f0 = Math_fround(0);\n'] if provide_fround else []) + \ |
| ['' if not settings['ALLOW_MEMORY_GROWTH'] else ''' |
| function _emscripten_replace_memory(newBuffer) { |
| if ((byteLength(newBuffer) & 0xffffff || byteLength(newBuffer) <= 0xffffff) || byteLength(newBuffer) > 0x80000000) return false; |
| HEAP8 = new Int8View(newBuffer); |
| HEAP16 = new Int16View(newBuffer); |
| HEAP32 = new Int32View(newBuffer); |
| HEAPU8 = new Uint8View(newBuffer); |
| HEAPU16 = new Uint16View(newBuffer); |
| HEAPU32 = new Uint32View(newBuffer); |
| HEAPF32 = new Float32View(newBuffer); |
| HEAPF64 = new Float64View(newBuffer); |
| buffer = newBuffer; |
| return true; |
| } |
| '''] + \ |
| ['' if not settings['POINTER_MASKING'] or settings['POINTER_MASKING_DYNAMIC'] else ''' |
| function _declare_heap_length() { |
| return HEAP8[%s] | 0; |
| } |
| ''' % (settings['TOTAL_MEMORY'] + settings['POINTER_MASKING_OVERFLOW'] - 1)] + [''' |
| // EMSCRIPTEN_START_FUNCS |
| function stackAlloc(size) { |
| size = size|0; |
| var ret = 0; |
| ret = STACKTOP; |
| STACKTOP = (STACKTOP + size)|0; |
| STACKTOP = (STACKTOP + 15)&-16; |
| ''' + ('if ((STACKTOP|0) >= (STACK_MAX|0)) abort();\n' if settings['ASSERTIONS'] else '') + ''' |
| return ret|0; |
| } |
| function stackSave() { |
| return STACKTOP|0; |
| } |
| function stackRestore(top) { |
| top = top|0; |
| STACKTOP = top; |
| } |
| ''' + (''' |
| function setAsync() { |
| ___async = 1; |
| }''' if need_asyncify else '') + (''' |
| function emterpret(pc) { // this will be replaced when the emterpreter code is generated; adding it here allows validation until then |
| pc = pc | 0; |
| assert(0); |
| } |
| ''' if settings['EMTERPRETIFY'] else '') + (''' |
| function setAsyncState(x) { |
| x = x | 0; |
| asyncState = x; |
| } |
| function emtStackSave() { |
| return EMTSTACKTOP|0; |
| } |
| ''' if settings['EMTERPRETIFY_ASYNC'] else '') + ''' |
| function setThrew(threw, value) { |
| threw = threw|0; |
| value = value|0; |
| if ((__THREW__|0) == 0) { |
| __THREW__ = threw; |
| threwValue = value; |
| } |
| } |
| function copyTempFloat(ptr) { |
| ptr = ptr|0; |
| HEAP8[tempDoublePtr>>0] = HEAP8[ptr>>0]; |
| HEAP8[tempDoublePtr+1>>0] = HEAP8[ptr+1>>0]; |
| HEAP8[tempDoublePtr+2>>0] = HEAP8[ptr+2>>0]; |
| HEAP8[tempDoublePtr+3>>0] = HEAP8[ptr+3>>0]; |
| } |
| function copyTempDouble(ptr) { |
| ptr = ptr|0; |
| HEAP8[tempDoublePtr>>0] = HEAP8[ptr>>0]; |
| HEAP8[tempDoublePtr+1>>0] = HEAP8[ptr+1>>0]; |
| HEAP8[tempDoublePtr+2>>0] = HEAP8[ptr+2>>0]; |
| HEAP8[tempDoublePtr+3>>0] = HEAP8[ptr+3>>0]; |
| HEAP8[tempDoublePtr+4>>0] = HEAP8[ptr+4>>0]; |
| HEAP8[tempDoublePtr+5>>0] = HEAP8[ptr+5>>0]; |
| HEAP8[tempDoublePtr+6>>0] = HEAP8[ptr+6>>0]; |
| HEAP8[tempDoublePtr+7>>0] = HEAP8[ptr+7>>0]; |
| } |
| function setTempRet0(value) { |
| value = value|0; |
| tempRet0 = value; |
| } |
| function getTempRet0() { |
| return tempRet0|0; |
| } |
| '''] + funcs_js + [''' |
| %s |
| |
| return %s; |
| }) |
| // EMSCRIPTEN_END_ASM |
| (%s, %s, buffer); |
| %s; |
| ''' % (pre_tables + '\n'.join(function_tables_impls) + '\n' + function_tables_defs, exports, |
| 'Module' + access_quote('asmGlobalArg'), |
| 'Module' + access_quote('asmLibraryArg'), |
| receiving)] |
| |
| if not settings.get('SIDE_MODULE'): |
| funcs_js.append(''' |
| Runtime.stackAlloc = asm['stackAlloc']; |
| Runtime.stackSave = asm['stackSave']; |
| Runtime.stackRestore = asm['stackRestore']; |
| Runtime.setTempRet0 = asm['setTempRet0']; |
| Runtime.getTempRet0 = asm['getTempRet0']; |
| ''') |
| |
| # Set function table masks |
| masks = {} |
| max_mask = 0 |
| for sig, table in last_forwarded_json['Functions']['tables'].iteritems(): |
| mask = table.count(',') |
| masks[sig] = str(mask) |
| max_mask = max(mask, max_mask) |
| def function_table_maskize(js, masks): |
| def fix(m): |
| sig = m.groups(0)[0] |
| return masks[sig] |
| return re.sub(r'{{{ FTM_([\w\d_$]+) }}}', lambda m: fix(m), js) # masks[m.groups(0)[0]] |
| funcs_js = map(lambda js: function_table_maskize(js, masks), funcs_js) |
| |
| if settings.get('DLOPEN_SUPPORT'): |
| funcs_js.append(''' |
| asm.maxFunctionIndex = %(max_mask)d; |
| DLFCN.registerFunctions(asm, %(max_mask)d+1, %(sigs)s, Module); |
| Module.SYMBOL_TABLE = SYMBOL_TABLE; |
| ''' % { 'max_mask': max_mask, 'sigs': str(map(str, last_forwarded_json['Functions']['tables'].keys())) }) |
| |
| # Create symbol table for self-dlopen |
| if settings.get('DLOPEN_SUPPORT'): |
| symbol_table = {} |
| for k, v in forwarded_json['Variables']['indexedGlobals'].iteritems(): |
| if forwarded_json['Variables']['globals'][k]['named']: |
| symbol_table[k] = str(v + forwarded_json['Runtime']['GLOBAL_BASE']) |
| for raw in last_forwarded_json['Functions']['tables'].itervalues(): |
| if raw == '': continue |
| table = map(string.strip, raw[raw.find('[')+1:raw.find(']')].split(",")) |
| for i in range(len(table)): |
| value = table[i] |
| if value != '0': |
| if settings.get('SIDE_MODULE'): |
| symbol_table[value] = 'FUNCTION_TABLE_OFFSET+' + str(i) |
| else: |
| symbol_table[value] = str(i) |
| outfile.write("var SYMBOL_TABLE = %s;" % json.dumps(symbol_table).replace('"', '')) |
| |
| for i in range(len(funcs_js)): # do this loop carefully to save memory |
| if WINDOWS: funcs_js[i] = funcs_js[i].replace('\r\n', '\n') # Normalize to UNIX line endings, otherwise writing to text file will duplicate \r\n to \r\r\n! |
| outfile.write(funcs_js[i]) |
| funcs_js = None |
| |
| if WINDOWS: post = post.replace('\r\n', '\n') # Normalize to UNIX line endings, otherwise writing to text file will duplicate \r\n to \r\r\n! |
| outfile.write(post) |
| |
| outfile.close() |
| |
| if DEBUG: logging.debug(' emscript: final python processing took %s seconds' % (time.time() - t)) |
| |
| success = True |
| |
| finally: |
| if not success: |
| outfile.close() |
| shared.try_delete(outfile.name) # remove partial output |
| |
| if os.environ.get('EMCC_FAST_COMPILER') != '0': |
| emscript = emscript_fast |
| else: |
| logging.critical('Non-fastcomp compiler is no longer available, please use fastcomp or an older version of emscripten') |
| sys.exit(1) |
| |
| def main(args, compiler_engine, cache, relooper, temp_files, DEBUG, DEBUG_CACHE): |
| # Prepare settings for serialization to JSON. |
| settings = {} |
| for setting in args.settings: |
| name, value = setting.strip().split('=', 1) |
| settings[name] = json.loads(value) |
| |
| # libraries |
| libraries = args.libraries[0].split(',') if len(args.libraries) > 0 else [] |
| |
| # Compile the assembly to Javascript. |
| if settings.get('RELOOP'): |
| if not relooper: |
| relooper = settings.get('RELOOPER') |
| if not relooper: |
| relooper = cache.get_path('relooper.js') |
| settings.setdefault('RELOOPER', relooper) |
| if not os.path.exists(relooper): |
| shared.Building.ensure_relooper(relooper) |
| |
| settings.setdefault('STRUCT_INFO', cache.get_path('struct_info.compiled.json')) |
| struct_info = settings.get('STRUCT_INFO') |
| |
| if not os.path.exists(struct_info) and not settings.get('BOOTSTRAPPING_STRUCT_INFO'): |
| if DEBUG: logging.debug(' emscript: bootstrapping struct info...') |
| shared.Building.ensure_struct_info(struct_info) |
| if DEBUG: logging.debug(' emscript: bootstrapping struct info complete') |
| |
| emscript(args.infile, settings, args.outfile, libraries, compiler_engine=compiler_engine, |
| temp_files=temp_files, DEBUG=DEBUG, DEBUG_CACHE=DEBUG_CACHE) |
| |
| def _main(environ): |
| response_file = True |
| while response_file: |
| response_file = None |
| for index in range(1, len(sys.argv)): |
| if sys.argv[index][0] == '@': |
| # found one, loop again next time |
| response_file = True |
| response_file_args = read_response_file(sys.argv[index]) |
| # slice in extra_args in place of the response file arg |
| sys.argv[index:index+1] = response_file_args |
| break |
| |
| parser = optparse.OptionParser( |
| usage='usage: %prog [-h] [-H HEADERS] [-o OUTFILE] [-c COMPILER_ENGINE] [-s FOO=BAR]* infile', |
| description=('You should normally never use this! Use emcc instead. ' |
| 'This is a wrapper around the JS compiler, converting .ll to .js.'), |
| epilog='') |
| parser.add_option('-H', '--headers', |
| default=[], |
| action='append', |
| help='System headers (comma separated) whose #defines should be exposed to the compiled code.') |
| parser.add_option('-L', '--libraries', |
| default=[], |
| action='append', |
| help='Library files (comma separated) to use in addition to those in emscripten src/library_*.') |
| parser.add_option('-o', '--outfile', |
| default=sys.stdout, |
| help='Where to write the output; defaults to stdout.') |
| parser.add_option('-c', '--compiler', |
| default=None, |
| help='Which JS engine to use to run the compiler; defaults to the one in ~/.emscripten.') |
| parser.add_option('--relooper', |
| default=None, |
| help='Which relooper file to use if RELOOP is enabled.') |
| parser.add_option('-s', '--setting', |
| dest='settings', |
| default=[], |
| action='append', |
| metavar='FOO=BAR', |
| help=('Overrides for settings defined in settings.js. ' |
| 'May occur multiple times.')) |
| parser.add_option('-T', '--temp-dir', |
| default=None, |
| help=('Where to create temporary files.')) |
| parser.add_option('-v', '--verbose', |
| action='store_true', |
| dest='verbose', |
| help='Displays debug output') |
| parser.add_option('-q', '--quiet', |
| action='store_false', |
| dest='verbose', |
| help='Hides debug output') |
| parser.add_option('--suppressUsageWarning', |
| action='store_true', |
| default=environ.get('EMSCRIPTEN_SUPPRESS_USAGE_WARNING'), |
| help=('Suppress usage warning')) |
| |
| # Convert to the same format that argparse would have produced. |
| keywords, positional = parser.parse_args() |
| |
| if not keywords.suppressUsageWarning: |
| logging.warning(''' |
| ============================================================== |
| WARNING: You should normally never use this! Use emcc instead. |
| ============================================================== |
| ''') |
| |
| if len(positional) != 1: |
| raise RuntimeError('Must provide exactly one positional argument. Got ' + str(len(positional)) + ': "' + '", "'.join(positional) + '"') |
| keywords.infile = os.path.abspath(positional[0]) |
| if isinstance(keywords.outfile, basestring): |
| keywords.outfile = open(keywords.outfile, 'w') |
| |
| if keywords.relooper: |
| relooper = os.path.abspath(keywords.relooper) |
| else: |
| relooper = None # use the cache |
| |
| if keywords.temp_dir is None: |
| temp_files = get_configuration().get_temp_files() |
| temp_dir = get_configuration().TEMP_DIR |
| else: |
| temp_dir = os.path.abspath(keywords.temp_dir) |
| if not os.path.exists(temp_dir): |
| os.makedirs(temp_dir) |
| temp_files = tempfiles.TempFiles(temp_dir) |
| |
| if keywords.compiler is None: |
| keywords.compiler = shared.COMPILER_ENGINE |
| |
| if keywords.verbose is None: |
| DEBUG = get_configuration().DEBUG |
| DEBUG_CACHE = get_configuration().DEBUG_CACHE |
| else: |
| DEBUG = keywords.verbose |
| DEBUG_CACHE = keywords.verbose |
| |
| cache = cache_module.Cache() |
| temp_files.run_and_clean(lambda: main( |
| keywords, |
| compiler_engine=keywords.compiler, |
| cache=cache, |
| relooper=relooper, |
| temp_files=temp_files, |
| DEBUG=DEBUG, |
| DEBUG_CACHE=DEBUG_CACHE, |
| )) |
| |
| if __name__ == '__main__': |
| _main(environ=os.environ) |