diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/preamble.js | 13 | ||||
| -rw-r--r-- | src/runtime.js | 13 |
2 files changed, 17 insertions, 9 deletions
diff --git a/src/preamble.js b/src/preamble.js index 833e64e4..83dac618 100644 --- a/src/preamble.js +++ b/src/preamble.js @@ -178,26 +178,27 @@ var STATICTOP; // Mangled |new| and |free| (various manglings, for int, long params; new and new[], etc. var _malloc, _free, __Znwj, __Znaj, __Znam, __Znwm, __ZdlPv, __ZdaPv; +var HAS_TYPED_ARRAYS = false; +var TOTAL_MEMORY = 50*1024*1024; + function __initializeRuntime__() { // If we don't have malloc/free implemented, use a simple implementation. Module['_malloc'] = _malloc = __Znwj = __Znaj = __Znam = __Znwm = Module['_malloc'] ? Module['_malloc'] : Runtime.staticAlloc; Module['_free'] = _free = __ZdlPv = __ZdaPv = Module['_free'] ? Module['_free'] : function() { }; + // TODO: Remove one of the 3 heaps! HEAP = intArrayFromString('(null)'); // So printing %s of NULL gives '(null)' // Also this ensures we leave 0 as an invalid address, 'NULL' #if USE_TYPED_ARRAYS - if (!this['TOTAL_MEMORY']) TOTAL_MEMORY = 50*1024*1024; - if (this['Int32Array']) { // check for engine support + HAS_TYPED_ARRAYS = this['Int32Array'] && this['Float64Array']; // check for engine support + if (HAS_TYPED_ARRAYS) { IHEAP = new Int32Array(TOTAL_MEMORY); for (var i = 0; i < HEAP.length; i++) { IHEAP[i] = HEAP[i]; } - } else { - IHEAP = HEAP; // fallback - } - if (this['Float64Array']) { // check for engine support FHEAP = new Float64Array(TOTAL_MEMORY); } else { + IHEAP = HEAP; // fallback FHEAP = HEAP; // fallback } #else diff --git a/src/runtime.js b/src/runtime.js index 2e76af39..cb79b68d 100644 --- a/src/runtime.js +++ b/src/runtime.js @@ -6,11 +6,13 @@ RuntimeGenerator = { alloc: function(size, type) { var ret = type + 'TOP'; if (GUARD_MEMORY) { - //if (!USE_TYPED_ARRAYS) { // No need for typed arrays - per the spec, initialized to 0 anyhow - // ret += '; for (var i = 0; i < ' + size + '; i++) HEAP[' + type + 'TOP+i] = 0'; - //} ret += '; assert(' + size + ' > 0)'; } + var initMemory = 'for (var i = 0; i < ' + size + '; i++) HEAP[' + type + 'TOP+i] = 0'; + if (USE_TYPED_ARRAYS) { // No need for typed arrays - per the spec, initialized to 0 anyhow + initMemory = 'if (!HAS_TYPED_ARRAYS) { ' + initMemory + '}'; + } + ret += '; ' + initMemory; ret += '; ' + type + 'TOP += ' + size; if (QUANTUM_SIZE > 1) { ret += ';' + RuntimeGenerator.alignMemory(type + 'TOP', QUANTUM_SIZE); @@ -36,6 +38,11 @@ RuntimeGenerator = { if (GUARD_MEMORY) { ret += '; assert(STACKTOP < STACK_MAX)'; } + var initMemory = 'for (var i = __stackBase__; i < STACKTOP; i++) HEAP[i] = 0'; + if (USE_TYPED_ARRAYS) { // No need for typed arrays - per the spec, initialized to 0 anyhow + initMemory = 'if (!HAS_TYPED_ARRAYS) { ' + initMemory + '}'; + } + ret += '; ' + initMemory; return ret; }, |