[gas] arm: Add support for new unwinder directive ".pacspval".

[Alan Modra]

On Mon, Nov 14, 2022 at 02:20:43PM +0000, Nick Clifton via Binutils wrote:
> >          * testsuite/gas/arm/ehabi-pacbti-m.d: New test.
> >          * testsuite/gas/arm/ehabi-pacbti-m.s: Likewise.

New tests should be widely tested.  This on fails on arm-pe and other
non-ELF targets with complaints that .cfi directives are unknown.

	* testsuite/gas/arm/ehabi-pacbti-m.d: Limit test to ELF.

diff --git a/gas/testsuite/gas/arm/ehabi-pacbti-m.d b/gas/testsuite/gas/arm/ehabi-pacbti-m.d
index 6039945f931..1b13020835c 100644
--- a/gas/testsuite/gas/arm/ehabi-pacbti-m.d
+++ b/gas/testsuite/gas/arm/ehabi-pacbti-m.d
@@ -1,7 +1,8 @@
-# name: Unwind Stack Frame information for Armv8.1-M.Mainline PAC extension
-# source: ehabi-pacbti-m.s
-# as: -march=armv8.1-m.main+mve+pacbti
-# readelf: -u
+#name: Unwind Stack Frame information for Armv8.1-M.Mainline PAC extension
+#source: ehabi-pacbti-m.s
+#as: -march=armv8.1-m.main+mve+pacbti
+#readelf: -u
+#target: [is_elf_format]
 
 Unwind section '.ARM.exidx' at offset 0x5c contains 1 entry:
 

-- 
Alan Modra
Australia Development Lab, IBM