Fix for the crash on big endian machine. (#197)

knm3000 · knm3000 · commit cd9916155a90 · 2021-11-19T13:05:07.000+01:00
Signed-off-by: Konstantin Maksimov &lt;konstantin.maksimov@ibm.com&gt;
diff --git a/src/v8/v8.cc b/src/v8/v8.cc
@@ -441,7 +441,11 @@ bool V8::setWord(uint64_t pointer, Word word) {
   if (pointer + size > memory_->data_size()) {
     return false;
   }
+#if defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+  uint32_t word32 = __builtin_bswap32(word.u32());
+#else
   uint32_t word32 = word.u32();
+#endif
   ::memcpy(memory_->data() + pointer, &word32, size);
   return true;
 }

Original file line number	Diff line number	Diff line change
`@@ -441,7 +441,11 @@ bool V8::setWord(uint64_t pointer, Word word) {`
`441`	`441`	`if (pointer + size > memory_->data_size()) {`
`442`	`442`	`return false;`
`443`	`443`	`}`
	`444`	`+#if defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__`
	`445`	`+ uint32_t word32 = __builtin_bswap32(word.u32());`
	`446`	`+#else`
`444`	`447`	`uint32_t word32 = word.u32();`
	`448`	`+#endif`
`445`	`449`	`::memcpy(memory_->data() + pointer, &word32, size);`
`446`	`450`	`return true;`
`447`	`451`	`}`