| /** |
| * @license |
| * Copyright 2010 The Emscripten Authors |
| * SPDX-License-Identifier: MIT |
| */ |
| |
| //"use strict"; |
| |
| // Convert analyzed data to javascript. Everything has already been calculated |
| // before this stage, which just does the final conversion to JavaScript. |
| |
| // Handy sets |
| |
| var STRUCT_LIST = set('struct', 'list'); |
| |
| var addedLibraryItems = {}; |
| var asmLibraryFunctions = []; |
| |
| var allExternPrimitives = ['Math_floor', 'Math_abs', 'Math_sqrt', 'Math_pow', |
| 'Math_cos', 'Math_sin', 'Math_tan', 'Math_acos', 'Math_asin', 'Math_atan', |
| 'Math_atan2', 'Math_exp', 'Math_log', 'Math_ceil', 'Math_imul', 'Math_min', |
| 'Math_max', 'Math_clz32', 'Math_fround', |
| 'Int8Array', 'Uint8Array', 'Int16Array', 'Uint16Array', 'Int32Array', |
| 'Uint32Array', 'Float32Array', 'Float64Array']; |
| |
| // Specifies the set of referenced built-in primitives such as Math.max etc. |
| var usedExternPrimitives = {}; |
| |
| var SETJMP_LABEL = -1; |
| |
| var INDENTATION = ' '; |
| |
| var functionStubSigs = {}; |
| |
| // Some JS-implemented library functions are proxied to be called on the main browser thread, if the Emscripten runtime is executing in a Web Worker. |
| // Each such proxied function is identified via an ordinal number (this is not the same namespace as function pointers in general). |
| var proxiedFunctionTable = ["null" /* Reserve index 0 for an undefined function*/]; |
| |
| // proxiedFunctionInvokers contains bodies of the functions that will perform the proxying. These |
| // are generated in a map to keep track which ones have already been emitted, to avoid outputting duplicates. |
| // map: pair(sig, syncOrAsync) -> function body |
| var proxiedFunctionInvokers = {}; |
| |
| // We include asm2wasm imports if the trap mode is 'js' (to call out to JS to do some math stuff). |
| // However, we always need some of them (like the frem import because % is in asm.js but not in wasm). |
| // But we can avoid emitting all the others in many cases. |
| var NEED_ALL_ASM2WASM_IMPORTS = BINARYEN_TRAP_MODE == 'js'; |
| |
| // Used internally. set when there is a main() function. |
| // Also set when in a linkable module, as the main() function might |
| // arrive from a dynamically-linked library, and not necessarily |
| // the current compilation unit. |
| // Also set for STANDALONE_WASM since the _start function is needed to call |
| // static ctors, even if there is no user main. |
| var HAS_MAIN = ('_main' in IMPLEMENTED_FUNCTIONS) || MAIN_MODULE || SIDE_MODULE || STANDALONE_WASM; |
| |
| // Mangles the given C/JS side function name to assembly level function name (adds an underscore) |
| function mangleCSymbolName(f) { |
| return f[0] == '$' ? f.substr(1) : '_' + f; |
| } |
| |
| // Reverses C/JS name mangling: _foo -> foo, and foo -> $foo. |
| function demangleCSymbolName(f) { |
| return f[0] == '_' ? f.substr(1) : '$' + f; |
| } |
| |
| function isJsLibraryConfigIdentifier(ident) { |
| return ident.endsWith('__sig') || ident.endsWith('__proxy') || ident.endsWith('__asm') || ident.endsWith('__inline') |
| || ident.endsWith('__deps') || ident.endsWith('__postset') || ident.endsWith('__docs') || ident.endsWith('__import'); |
| } |
| |
| // JSifier |
| function JSify(data, functionsOnly) { |
| var mainPass = !functionsOnly; |
| |
| var itemsDict = { type: [], GlobalVariableStub: [], functionStub: [], function: [], GlobalVariable: [], GlobalVariablePostSet: [] }; |
| |
| if (mainPass) { |
| // Add additional necessary items for the main pass. We can now do this since types are parsed (types can be used through |
| // generateStructInfo in library.js) |
| |
| LibraryManager.load(); |
| |
| var libFuncsToInclude; |
| if (INCLUDE_FULL_LIBRARY) { |
| assert(!SIDE_MODULE, 'Cannot have both INCLUDE_FULL_LIBRARY and SIDE_MODULE set.') |
| libFuncsToInclude = (MAIN_MODULE || SIDE_MODULE) ? DEFAULT_LIBRARY_FUNCS_TO_INCLUDE.slice(0) : []; |
| for (var key in LibraryManager.library) { |
| if (!isJsLibraryConfigIdentifier(key)) { |
| libFuncsToInclude.push(key); |
| } |
| } |
| } else { |
| libFuncsToInclude = DEFAULT_LIBRARY_FUNCS_TO_INCLUDE; |
| } |
| libFuncsToInclude.forEach(function(ident) { |
| data.functionStubs.push({ |
| ident: mangleCSymbolName(ident) |
| }); |
| }); |
| } |
| |
| function processLibraryFunction(snippet, ident, finalName) { |
| // It is possible that when printing the function as a string on Windows, the js interpreter we are in returns the string with Windows |
| // line endings \r\n. This is undesirable, since line endings are managed in the form \n in the output for binary file writes, so |
| // make sure the endings are uniform. |
| snippet = snippet.toString().replace(/\r\n/gm,"\n"); |
| assert(snippet.indexOf('XXX missing C define') == -1, |
| 'Trying to include a library function with missing C defines: ' + finalName + ' | ' + snippet); |
| |
| // name the function; overwrite if it's already named |
| snippet = snippet.replace(/function(?:\s+([^(]+))?\s*\(/, 'function ' + finalName + '('); |
| // Apply special js library debug modes |
| if (!LibraryManager.library[ident + '__asm']) { |
| // apply LIBRARY_DEBUG if relevant |
| if (LIBRARY_DEBUG) { |
| snippet = modifyFunction(snippet, function(name, args, body) { |
| return 'function ' + name + '(' + args + ') {\n' + |
| 'var ret = (function() { if (runtimeDebug) err("[library call:' + finalName + ': " + Array.prototype.slice.call(arguments).map(prettyPrint) + "]");\n' + |
| body + |
| '}).apply(this, arguments); if (runtimeDebug && typeof ret !== "undefined") err(" [ return:" + prettyPrint(ret)); return ret; \n}\n'; |
| }); |
| } |
| } |
| return snippet; |
| } |
| |
| // functionStub |
| function functionStubHandler(item) { |
| // In LLVM, exceptions generate a set of functions of form __cxa_find_matching_catch_1(), __cxa_find_matching_catch_2(), etc. |
| // where the number specifies the number of arguments. In Emscripten, route all these to a single function '__cxa_find_matching_catch' |
| // that variadically processes all of these functions using JS 'arguments' object. |
| if (item.ident.startsWith('___cxa_find_matching_catch_')) { |
| if (DISABLE_EXCEPTION_THROWING) { |
| error('DISABLE_EXCEPTION_THROWING was set (likely due to -fno-exceptions), which means no C++ exception throwing support code is linked in, but exception catching code appears. Either do not set DISABLE_EXCEPTION_THROWING (if you do want exception throwing) or compile all source files with -fno-except (so that no exceptions support code is required); also make sure DISABLE_EXCEPTION_CATCHING is set to the right value - if you want exceptions, it should be off, and vice versa.'); |
| return; |
| } |
| var num = +item.ident.split('_').slice(-1)[0]; |
| addCxaCatch(num); |
| // Continue, with the code below emitting the proper JavaScript based on |
| // what we just added to the library. |
| } |
| |
| function addFromLibrary(ident) { |
| if (ident in addedLibraryItems) return ''; |
| addedLibraryItems[ident] = true; |
| |
| // dependencies can be JS functions, which we just run |
| if (typeof ident == 'function') return ident(); |
| |
| // don't process any special identifiers. These are looked up when processing the base name of the identifier. |
| if (isJsLibraryConfigIdentifier(ident)) { |
| return ''; |
| } |
| |
| var finalName = mangleCSymbolName(ident); |
| |
| // if the function was implemented in compiled code, we just need to export it so we can reach it from JS |
| if (finalName in IMPLEMENTED_FUNCTIONS) { |
| EXPORTED_FUNCTIONS[finalName] = 1; |
| // stop here: we don't need to add anything from our js libraries, not even deps, compiled code is on it |
| return ''; |
| } |
| |
| // Don't replace implemented functions with library ones (which can happen when we add dependencies). |
| // Note: We don't return the dependencies here. Be careful not to end up where this matters |
| if (finalName in Functions.implementedFunctions) return ''; |
| |
| var noExport = false; |
| |
| if (allExternPrimitives.indexOf(ident) != -1) { |
| usedExternPrimitives[ident] = 1; |
| return; |
| } else if ((!LibraryManager.library.hasOwnProperty(ident) && !LibraryManager.library.hasOwnProperty(ident + '__inline')) || SIDE_MODULE) { |
| if (!(finalName in IMPLEMENTED_FUNCTIONS) && !LINKABLE) { |
| var msg = 'undefined symbol: ' + ident; |
| if (ERROR_ON_UNDEFINED_SYMBOLS) { |
| error(msg); |
| if (WASM_BACKEND && !LLD_REPORT_UNDEFINED) { |
| warnOnce('Link with `-s LLD_REPORT_UNDEFINED` to get more information on undefined symbols'); |
| } |
| warnOnce('To disable errors for undefined symbols use `-s ERROR_ON_UNDEFINED_SYMBOLS=0`') |
| warnOnce(finalName + ' may need to be added to EXPORTED_FUNCTIONS if it arrives from a system library') |
| } else if (VERBOSE || WARN_ON_UNDEFINED_SYMBOLS) { |
| warn(msg); |
| } |
| } |
| if (!RELOCATABLE) { |
| // emit a stub that will fail at runtime |
| LibraryManager.library[ident] = new Function("err('missing function: " + ident + "'); abort(-1);"); |
| // We have already warned/errored about this function, so for the purposes of Closure use, mute all type checks |
| // regarding this function, marking ot a variadic function that can take in anything and return anything. |
| // (not useful to warn/error multiple times) |
| LibraryManager.library[ident + '__docs'] = '/** @type {function(...*):?} */'; |
| } else { |
| var isGlobalAccessor = ident.startsWith('g$'); |
| var realIdent = ident; |
| if (isGlobalAccessor) { |
| realIdent = realIdent.substr(2); |
| } |
| |
| var target = (SIDE_MODULE ? 'parent' : '') + "Module['" + mangleCSymbolName(realIdent) + "']"; |
| var assertion = ''; |
| if (ASSERTIONS) { |
| var what = 'function'; |
| if (isGlobalAccessor) { |
| what = 'global'; |
| } |
| assertion += 'if (!' + target + ') abort("external ' + what + ' \'' + realIdent + '\' is missing. perhaps a side module was not linked in? if this function was expected to arrive from a system library, try to build the MAIN_MODULE with EMCC_FORCE_STDLIBS=1 in the environment");\n'; |
| |
| } |
| var functionBody; |
| if (isGlobalAccessor) { |
| functionBody = assertion + "return " + target + ";" |
| } else { |
| functionBody = assertion + "return " + target + ".apply(null, arguments);"; |
| } |
| LibraryManager.library[ident] = new Function(functionBody); |
| if (SIDE_MODULE) { |
| // no dependencies, just emit the thunk |
| Functions.libraryFunctions[finalName] = 1; |
| return processLibraryFunction(LibraryManager.library[ident], ident, finalName); |
| } |
| noExport = true; |
| } |
| } |
| |
| var original = LibraryManager.library[ident]; |
| var snippet = original; |
| var redirectedIdent = null; |
| var deps = LibraryManager.library[ident + '__deps'] || []; |
| deps.forEach(function(dep) { |
| if (typeof snippet === 'string' && !(dep in LibraryManager.library)) warn('missing library dependency ' + dep + ', make sure you are compiling with the right options (see #ifdefs in src/library*.js)'); |
| }); |
| var isFunction = false; |
| |
| if (typeof snippet === 'string') { |
| if (snippet[0] != '=') { |
| var target = LibraryManager.library[snippet]; |
| if (target) { |
| // Redirection for aliases. We include the parent, and at runtime make ourselves equal to it. |
| // This avoid having duplicate functions with identical content. |
| redirectedIdent = snippet; |
| deps.push(snippet); |
| snippet = mangleCSymbolName(snippet); |
| } |
| // In asm, we need to know about library functions. If there is a target, though, then no |
| // need to consider this a library function - we will call directly to it anyhow |
| if (!redirectedIdent && (typeof target == 'function' || /Math_\w+/.exec(snippet))) { |
| Functions.libraryFunctions[finalName] = 1; |
| } |
| } |
| } else if (typeof snippet === 'object') { |
| snippet = stringifyWithFunctions(snippet); |
| } else if (typeof snippet === 'function') { |
| isFunction = true; |
| snippet = processLibraryFunction(snippet, ident, finalName); |
| if (!isJsOnlyIdentifier(ident[0])) { |
| Functions.libraryFunctions[finalName] = 1; |
| } |
| } |
| |
| // If a JS library item specifies xxx_import: true, then explicitly mark that symbol to be imported |
| // to asm.js/wasm module. |
| if (LibraryManager.library[ident + '__import']) { |
| Functions.libraryFunctions[finalName] = 1; |
| } |
| |
| if (ONLY_CALC_JS_SYMBOLS) |
| return ''; |
| |
| var postsetId = ident + '__postset'; |
| var postset = LibraryManager.library[postsetId]; |
| if (postset) { |
| // A postset is either code to run right now, or some text we should emit. |
| // If it's code, it may return some text to emit as well. |
| if (typeof postset === 'function') { |
| postset = postset(); |
| } |
| if (postset && !addedLibraryItems[postsetId] && !SIDE_MODULE) { |
| addedLibraryItems[postsetId] = true; |
| itemsDict.GlobalVariablePostSet.push({ |
| JS: postset + ';' |
| }); |
| } |
| } |
| |
| if (redirectedIdent) { |
| deps = deps.concat(LibraryManager.library[redirectedIdent + '__deps'] || []); |
| } |
| // In asm, dependencies implemented in C might be needed by JS library functions. |
| // We don't know yet if they are implemented in C or not. To be safe, export such |
| // special cases. |
| [LIBRARY_DEPS_TO_AUTOEXPORT].forEach(function(special) { |
| deps.forEach(function(dep) { |
| if (dep == special && !EXPORTED_FUNCTIONS[dep]) { |
| EXPORTED_FUNCTIONS[dep] = 1; |
| } |
| }); |
| }); |
| if (VERBOSE) printErr('adding ' + finalName + ' and deps ' + deps + ' : ' + (snippet + '').substr(0, 40)); |
| var depsText = (deps ? '\n' + deps.map(addFromLibrary).filter(function(x) { return x != '' }).join('\n') : ''); |
| var contentText; |
| if (isFunction) { |
| // Emit the body of a JS library function. |
| var proxyingMode = LibraryManager.library[ident + '__proxy']; |
| if (USE_PTHREADS && proxyingMode) { |
| if (proxyingMode !== 'sync' && proxyingMode !== 'async') { |
| throw 'Invalid proxyingMode ' + ident + '__proxy: \'' + proxyingMode + '\' specified!'; |
| } |
| var sync = proxyingMode === 'sync'; |
| assert(typeof original === 'function'); |
| contentText = modifyFunction(snippet, function(name, args, body) { |
| return 'function ' + name + '(' + args + ') {\n' + |
| 'if (ENVIRONMENT_IS_PTHREAD) return _emscripten_proxy_to_main_thread_js(' + proxiedFunctionTable.length + ', ' + (+sync) + (args ? ', ' : '') + args + ');\n' + body + '}\n'; |
| }); |
| proxiedFunctionTable.push(finalName); |
| } else { |
| contentText = snippet; // Regular JS function that will be executed in the context of the calling thread. |
| } |
| } else if (typeof snippet === 'string' && snippet.indexOf(';') == 0) { |
| // In JS libraries |
| // foo: ';[code here verbatim]' |
| // emits |
| // 'var foo;[code here verbatim];' |
| contentText = 'var ' + finalName + snippet; |
| if (snippet[snippet.length-1] != ';' && snippet[snippet.length-1] != '}') contentText += ';'; |
| } else { |
| // In JS libraries |
| // foo: '=[value]' |
| // emits |
| // 'var foo = [value];' |
| if (typeof snippet === 'string' && snippet[0] == '=') snippet = snippet.substr(1); |
| contentText = 'var ' + finalName + '=' + snippet + ';'; |
| } |
| var sig = LibraryManager.library[ident + '__sig']; |
| if (isFunction && sig && LibraryManager.library[ident + '__asm']) { |
| // asm library function, add it as generated code alongside the generated code |
| Functions.implementedFunctions[finalName] = sig; |
| asmLibraryFunctions.push(contentText); |
| contentText = ' '; |
| Functions.libraryFunctions[finalName] = 2; |
| noExport = true; // if it needs to be exported, that will happen in emscripten.py |
| } |
| // asm module exports are done in emscripten.py, after the asm module is ready. Here |
| // we also export library methods as necessary. |
| if ((EXPORT_ALL || (finalName in EXPORTED_FUNCTIONS)) && !noExport) { |
| contentText += '\nModule["' + finalName + '"] = ' + finalName + ';'; |
| } |
| if (!LibraryManager.library[ident + '__asm']) { |
| // If we are not an asm library func, and we have a dep that is, then we need to call |
| // into the asm module to reach that dep. so it must be exported from the asm module. |
| // We set EXPORTED_FUNCTIONS here to tell emscripten.py to do that. |
| deps.forEach(function(dep) { |
| if (LibraryManager.library[dep + '__asm']) { |
| EXPORTED_FUNCTIONS[mangleCSymbolName(dep)] = 0; |
| } |
| }); |
| } |
| |
| var commentText = ''; |
| if (LibraryManager.library[ident + '__docs']) { |
| commentText = LibraryManager.library[ident + '__docs'] + '\n'; |
| } |
| |
| return depsText + commentText + contentText; |
| } |
| |
| itemsDict.functionStub.push(item); |
| var shortident = demangleCSymbolName(item.ident); |
| // If this is not linkable, anything not in the library is definitely missing |
| if (item.ident in DEAD_FUNCTIONS) { |
| if (LibraryManager.library[shortident + '__asm']) { |
| warn('cannot kill asm library function ' + item.ident); |
| } else { |
| LibraryManager.library[shortident] = new Function("err('dead function: " + shortident + "'); abort(-1);"); |
| delete LibraryManager.library[shortident + '__inline']; |
| delete LibraryManager.library[shortident + '__deps']; |
| } |
| } |
| item.JS = addFromLibrary(shortident); |
| } |
| |
| // Final combiner |
| |
| function finalCombiner() { |
| var splitPostSets = splitter(itemsDict.GlobalVariablePostSet, function(x) { return x.ident && x.dependencies }); |
| itemsDict.GlobalVariablePostSet = splitPostSets.leftIn; |
| var orderedPostSets = splitPostSets.splitOut; |
| |
| var limit = orderedPostSets.length * orderedPostSets.length; |
| for (var i = 0; i < orderedPostSets.length; i++) { |
| for (var j = i+1; j < orderedPostSets.length; j++) { |
| if (orderedPostSets[j].ident in orderedPostSets[i].dependencies) { |
| var temp = orderedPostSets[i]; |
| orderedPostSets[i] = orderedPostSets[j]; |
| orderedPostSets[j] = temp; |
| i--; |
| limit--; |
| assert(limit > 0, 'Could not sort postsets!'); |
| break; |
| } |
| } |
| } |
| |
| itemsDict.GlobalVariablePostSet = itemsDict.GlobalVariablePostSet.concat(orderedPostSets); |
| |
| // |
| |
| if (!mainPass) { |
| if (!Variables.generatedGlobalBase) { |
| Variables.generatedGlobalBase = true; |
| // Globals are done, here is the rest of static memory |
| if (SIDE_MODULE) { |
| print('gb = alignMemory(getMemory({{{ STATIC_BUMP }}} + ' + MAX_GLOBAL_ALIGN + '), ' + MAX_GLOBAL_ALIGN + ' || 1);\n'); |
| // The static area consists of explicitly initialized data, followed by zero-initialized data. |
| // The latter may need zeroing out if the MAIN_MODULE has already used this memory area before |
| // dlopen'ing the SIDE_MODULE. Since we don't know the size of the explicitly initialized data |
| // here, we just zero the whole thing, which is suboptimal, but should at least resolve bugs |
| // from uninitialized memory. |
| print('for (var i = gb; i < gb + {{{ STATIC_BUMP }}}; ++i) HEAP8[i] = 0;\n'); |
| } |
| // emit "metadata" in a comment. FIXME make this nicer |
| print('// STATICTOP = STATIC_BASE + ' + alignMemory(Variables.nextIndexedOffset) + ';\n'); |
| } |
| var generated = itemsDict.function.concat(itemsDict.type).concat(itemsDict.GlobalVariableStub).concat(itemsDict.GlobalVariable); |
| print(generated.map(function(item) { return item.JS; }).join('\n')); |
| |
| if (memoryInitialization.length > 0) { |
| // apply postsets directly into the big memory initialization |
| itemsDict.GlobalVariablePostSet = itemsDict.GlobalVariablePostSet.filter(function(item) { |
| var m; |
| if (m = /^HEAP([\dFU]+)\[([()>\d]+)\] *= *([()|\d{}\w_' ]+);?$/.exec(item.JS)) { |
| var type = getTypeFromHeap(m[1]); |
| var bytes = Runtime.getNativeTypeSize(type); |
| var target = eval(m[2]) << log2(bytes); |
| var value = m[3]; |
| try { |
| value = eval(value); |
| } catch(e) { |
| // possibly function table {{{ FT_* }}} etc. |
| if (value.indexOf('{{ ') < 0) return true; |
| } |
| writeInt8s(memoryInitialization, target - Runtime.GLOBAL_BASE, value, type); |
| return false; |
| } |
| return true; |
| }); |
| // write out the singleton big memory initialization value |
| if (USE_PTHREADS) { |
| print('if (!ENVIRONMENT_IS_PTHREAD) {') // Pthreads should not initialize memory again, since it's shared with the main thread. |
| } |
| print('/* memory initializer */ ' + makePointer(memoryInitialization, null, 'ALLOC_NONE', 'i8', 'GLOBAL_BASE' + (SIDE_MODULE ? '+H_BASE' : ''), true)); |
| if (USE_PTHREADS) { |
| print('}') |
| } |
| } else { |
| print('/* no memory initializer */'); // test purposes |
| } |
| |
| if (!SIDE_MODULE && !WASM_BACKEND) { |
| if (USE_PTHREADS) { |
| print('// Pthreads fill their tempDoublePtr memory area into the pthread stack when the thread is run.') |
| // Main thread still statically allocate tempDoublePtr - although it could theorerically also use its stack |
| // (that might allow removing the whole tempDoublePtr variable altogether from the codebase? but would need |
| // more refactoring) |
| print('var tempDoublePtr = ENVIRONMENT_IS_PTHREAD ? 0 : ' + makeStaticAlloc(8) + ';'); |
| } else { |
| print('var tempDoublePtr = ' + makeStaticAlloc(8) + ';'); |
| } |
| print('\nfunction copyTempFloat(ptr) { // functions, because inlining this code increases code size too much'); |
| print(' HEAP8[tempDoublePtr] = HEAP8[ptr];'); |
| print(' HEAP8[tempDoublePtr+1] = HEAP8[ptr+1];'); |
| print(' HEAP8[tempDoublePtr+2] = HEAP8[ptr+2];'); |
| print(' HEAP8[tempDoublePtr+3] = HEAP8[ptr+3];'); |
| print('}\n'); |
| print('function copyTempDouble(ptr) {'); |
| print(' HEAP8[tempDoublePtr] = HEAP8[ptr];'); |
| print(' HEAP8[tempDoublePtr+1] = HEAP8[ptr+1];'); |
| print(' HEAP8[tempDoublePtr+2] = HEAP8[ptr+2];'); |
| print(' HEAP8[tempDoublePtr+3] = HEAP8[ptr+3];'); |
| print(' HEAP8[tempDoublePtr+4] = HEAP8[ptr+4];'); |
| print(' HEAP8[tempDoublePtr+5] = HEAP8[ptr+5];'); |
| print(' HEAP8[tempDoublePtr+6] = HEAP8[ptr+6];'); |
| print(' HEAP8[tempDoublePtr+7] = HEAP8[ptr+7];'); |
| print('}\n'); |
| } |
| print('// {{PRE_LIBRARY}}\n'); // safe to put stuff here that statically allocates |
| |
| return; |
| } |
| |
| var shellFile = SHELL_FILE ? SHELL_FILE : (SIDE_MODULE ? 'shell_sharedlib.js' : (MINIMAL_RUNTIME ? 'shell_minimal.js' : 'shell.js')); |
| |
| var shellParts = read(shellFile).split('{{BODY}}'); |
| print(processMacros(preprocess(shellParts[0], shellFile))); |
| var pre; |
| if (SIDE_MODULE) { |
| pre = processMacros(preprocess(read('preamble_sharedlib.js'), 'preamble_sharedlib.js')); |
| } else if (MINIMAL_RUNTIME) { |
| pre = processMacros(preprocess(read('preamble_minimal.js'), 'preamble_minimal.js')); |
| } else { |
| pre = processMacros(preprocess(read('support.js'), 'support.js')) + |
| processMacros(preprocess(read('preamble.js'), 'preamble.js')); |
| } |
| print(pre); |
| |
| // Print out global variables and postsets TODO: batching |
| var legalizedI64sDefault = legalizedI64s; |
| legalizedI64s = false; |
| |
| var globalsData = {functionStubs: []} |
| JSify(globalsData, true); |
| globalsData = null; |
| |
| var generated = itemsDict.functionStub.concat(itemsDict.GlobalVariablePostSet); |
| generated.forEach(function(item) { print(indentify(item.JS || '', 2)); }); |
| |
| legalizedI64s = legalizedI64sDefault; |
| |
| if (!SIDE_MODULE) { |
| if (USE_PTHREADS) { |
| print('\n // proxiedFunctionTable specifies the list of functions that can be called either synchronously or asynchronously from other threads in postMessage()d or internally queued events. This way a pthread in a Worker can synchronously access e.g. the DOM on the main thread.') |
| print('\nvar proxiedFunctionTable = [' + proxiedFunctionTable.join() + '];\n'); |
| } |
| } |
| |
| if (!MINIMAL_RUNTIME) { |
| print('var ASSERTIONS = ' + !!ASSERTIONS + ';\n'); |
| |
| print(preprocess(read('arrayUtils.js'))); |
| } |
| |
| if (SUPPORT_BASE64_EMBEDDING && !MINIMAL_RUNTIME) { |
| print(preprocess(read('base64Utils.js'))); |
| } |
| |
| var usedExternPrimitiveNames = Object.keys(usedExternPrimitives); |
| if (usedExternPrimitiveNames.length > 0) { |
| print('// ASM_LIBRARY EXTERN PRIMITIVES: ' + usedExternPrimitiveNames.join(',') + '\n'); |
| } |
| |
| if (asmLibraryFunctions.length > 0) { |
| print('// ASM_LIBRARY FUNCTIONS'); |
| function fix(f) { // fix indenting to not confuse js optimizer |
| f = f.substr(f.indexOf('f')); // remove initial spaces before 'function' |
| f = f.substr(0, f.lastIndexOf('\n')+1); // remove spaces and last } XXX assumes function has multiple lines |
| return f + '}'; // add unindented } to match function |
| } |
| print(asmLibraryFunctions.map(fix).join('\n')); |
| } |
| |
| if (abortExecution) throw Error('Aborting compilation due to previous errors'); |
| |
| // This is the main 'post' pass. Print out the generated code that we have here, together with the |
| // rest of the output that we started to print out earlier (see comment on the |
| // "Final shape that will be created"). |
| print('// EMSCRIPTEN_END_FUNCS\n'); |
| |
| if (HEADLESS) { |
| print('if (!ENVIRONMENT_IS_WEB) {'); |
| print(read('headlessCanvas.js')); |
| print('\n'); |
| print(read('headless.js').replace("'%s'", "'http://emscripten.org'").replace("'?%s'", "''").replace("'?%s'", "'/'").replace('%s,', 'null,').replace('%d', '0')); |
| print('}'); |
| } |
| if (PROXY_TO_WORKER) { |
| print('if (ENVIRONMENT_IS_WORKER) {\n'); |
| print(read('webGLWorker.js')); |
| print(processMacros(preprocess(read('proxyWorker.js'), 'proxyWorker.js'))); |
| print('}'); |
| } |
| if (DETERMINISTIC) { |
| print(read('deterministic.js')); |
| } |
| |
| var postFile = SIDE_MODULE ? 'postamble_sharedlib.js' : (MINIMAL_RUNTIME ? 'postamble_minimal.js' : 'postamble.js'); |
| var postParts = processMacros(preprocess(read(postFile), postFile)).split('{{GLOBAL_VARS}}'); |
| print(postParts[0]); |
| |
| print(postParts[1]); |
| |
| var shellParts = read(shellFile).split('{{BODY}}'); |
| print(processMacros(preprocess(shellParts[1], shellFile))); |
| // Print out some useful metadata |
| if (RUNNING_JS_OPTS) { |
| var generatedFunctions = JSON.stringify(keys(Functions.implementedFunctions)); |
| if (RUNNING_JS_OPTS) { |
| print('// EMSCRIPTEN_GENERATED_FUNCTIONS: ' + generatedFunctions + '\n'); |
| } |
| } |
| |
| PassManager.serialize(); |
| } |
| |
| // Data |
| |
| if (mainPass) { |
| data.functionStubs.forEach(functionStubHandler); |
| } |
| |
| finalCombiner(); |
| } |
