crypto_25519_donna: don't use sse2 on foreign architectures

Steven Noonan · Steven Noonan · commit 0bec7735dedc · 2020-01-21T02:55:20.000-08:00
Signed-off-by: Steven Noonan &lt;steven@valvesoftware.com&gt;
diff --git a/src/common/crypto_25519_donna.cpp b/src/common/crypto_25519_donna.cpp
@@ -102,14 +102,16 @@ static bool CheckSSE2Technology()
 	return false;
 #elif defined( _M_X64 ) || defined (__x86_64__)
 	return true;
-#else
+#elif defined( _M_IX86 ) || defined( __i386__ )
 	static int result = -1;
 	if ( result < 0 )
 	{
 		uint32 eax,ebx,edx,unused;
 		result = cpuid(1,eax,ebx,unused,edx) && ( ( edx & 0x04000000 ) != 0 ) ? 1 : 0;
 	}
 	return result > 0;
+#else
+	return false;
 #endif
 }
 

Original file line number	Diff line number	Diff line change
`@@ -102,14 +102,16 @@ static bool CheckSSE2Technology()`
`102`	`102`	`return false;`
`103`	`103`	`#elif defined( _M_X64 ) \|\| defined (__x86_64__)`
`104`	`104`	`return true;`
`105`		`-#else`
	`105`	`+#elif defined( _M_IX86 ) \|\| defined( __i386__ )`
`106`	`106`	`static int result = -1;`
`107`	`107`	`if ( result < 0 )`
`108`	`108`	`{`
`109`	`109`	`uint32 eax,ebx,edx,unused;`
`110`	`110`	`result = cpuid(1,eax,ebx,unused,edx) && ( ( edx & 0x04000000 ) != 0 ) ? 1 : 0;`
`111`	`111`	`}`
`112`	`112`	`return result > 0;`
	`113`	`+#else`
	`114`	`+ return false;`
`113`	`115`	`#endif`
`114`	`116`	`}`
`115`	`117`