diff options
Diffstat (limited to 'src/include/emscripten.h')
| -rw-r--r-- | src/include/emscripten.h | 38 |
1 files changed, 2 insertions, 36 deletions
diff --git a/src/include/emscripten.h b/src/include/emscripten.h index 958bef98..b06f3781 100644 --- a/src/include/emscripten.h +++ b/src/include/emscripten.h @@ -7,42 +7,8 @@ * http://emscripten.org */ -// ES_SIZEOF -// -// NOTE: As of now, ES_SIZEOF is not needed when using QUANTUM_SIZE -// of 4. We will use the same offsets as C/C++ does in that case. -// ES_SIZEOF is useful if QUANTUM_SIZE is 1. -// -// A 'safe' sizeof operator. Sadly llvm-gcc calculates sizeof's -// and stores them hardcoded as raw values, unlike say offsets -// within a structure which it nicely details using getelementptr. -// -// You should always use ES_SIZEOF|V instead of sizeof when using -// Emscripten. Use ES_SIZEOF for types, ES_SIZEOV for values. -// -// Note that there is no way for Emscripten to know if you used -// ES_SIZEOF properly, or if you did and and you used sizeof. -// No warning will be shown if you do not use it. -// -// Sadly -// #define ES_SIZEOF(x) int(&((x*)(NULL))[1]) -// does not work, since the compiler parses and hard-codes the -// value. So we need to trick it with a function call. -#ifdef EMSCRIPTEN - template<class T> - int es_sizeof(T* x) { return int(&x[1]); } - #define ES_SIZEOF(T) es_sizeof((T*)0) - template<class T> - int es_sizeov(T* x) { return es_sizeof((T*)0); } - #define ES_SIZEOV(V) es_sizeof(V) - - // Undefine normal archs, so asm is not attempted - #define __EMSCRIPTEN__ - #undef __i386__ - #undef __x86_64__ -#else - #define ES_SIZEOF(T) sizeof(T) -#endif +#undef __i386__ +#undef __x86_64__ // Interface to the underlying JS engine. This function will // eval() the given script. |