shithub: mc

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Turn off fancy stuff when we have an old assembler.

--- a/mbld/syssel.myr

+++ b/mbld/syssel.myr

@@ -162,13 +162,13 @@

 		match opt_arch

 		| "x64":	

 			tag(b, "x64")

-			if opt_cpufeatures & CpuidSSE2 == CpuidSSE2

+			if supports(CpuidSSE2)

 				tag(b, "sse2")

 			;;

-			if opt_cpufeatures & CpuidSSE4 == CpuidSSE4

+			if supports(CpuidSSE4)

 				tag(b, "sse4")

 			;;

-			if opt_cpufeatures & CpuidFMA == CpuidFMA

+			if supports(CpuidFMA)

 				tag(b, "fma")

 			;;

 		| unknown:

@@ -179,6 +179,15 @@

 			tag(b, t)

 		;;

 		loadtagfile(b, "bld.tag")

+	;;

+}

+

+const supports = {feat

+	match (opt_sys, opt_cpufeatures & feat)

+	/* The version of gas that's shipped with openbsd is too old. */

+	| ("openbsd", CpuidSSE4):	-> false

+	| ("openbsd", CpuidFMA):	-> false

+	| (_, f):			-> f == feat

 	;;

 }