On 07/03/2018 14:37, Radim Krčmář wrote:
>>> x86/Makefile.x86_64 | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/x86/Makefile.x86_64 b/x86/Makefile.x86_64
>>> index 623fc5b37726..6caa3a8863f1 100644
>>> --- a/x86/Makefile.x86_64
>>> +++ b/x86/Makefile.x86_64
>>> @@ -1,7 +1,7 @@
>>> cstart.o = $(TEST_DIR)/cstart64.o
>>> bits = 64
>>> ldarch = elf64-x86-64
>>> -COMMON_CFLAGS += -mno-red-zone
>>> +COMMON_CFLAGS += -mno-red-zone -mno-sse2
>>
>> Why not -mno-sse?
>
> We have asm some code with the "x" constraint and it wouldn't compile
> without -msse. Should I rewrite that to be explicit?
You can wrap that code in x86/emulator.c with
#pragma GCC push_options
#pragma GCC target("sse")
...
#pragma GCC pop_options
Paolo
