[ARM]: Add support for vldmia/vldmdb/vstmia/vstmdb instructions in MVE.

This patch adds support for assembly instructions vldmia, vldmdb, vstmia
and vstmdb in MVE.  This instructions are already supported for Armv8-M
Floating-point Extension.

gas/ChangeLog:

2020-01-31  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

	* config/tc-arm.c (fldmias): Moved inside "THUMB_VARIANT & arm_ext_v6t2"
	to support VLDMIA instruction for MVE.
	(fldmdbs): Moved inside "THUMB_VARIANT & arm_ext_v6t2" to support VLDMDB
	instruction for MVE.
	(fstmias): Moved inside "THUMB_VARIANT & arm_ext_v6t2" to support VSTMIA
	instruction for MVE.
	(fstmdbs): Moved inside "THUMB_VARIANT & arm_ext_v6t2" to support VSTMDB
	instruction for MVE.
	* testsuite/gas/arm/mve-ldst.d: New test.
	* testsuite/gas/arm/mve-ldst.s: Likewise.

4 files changed, 75 insertions, 4 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index e79a452a5f6..6eb9cb3c96a 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,16 @@
+2020-01-31  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>
+
+	* config/tc-arm.c (fldmias): Moved inside "THUMB_VARIANT & arm_ext_v6t2"
+	to support VLDMIA instruction for MVE.
+	(fldmdbs): Moved inside "THUMB_VARIANT & arm_ext_v6t2" to support VLDMDB
+	instruction for MVE.
+	(fstmias): Moved inside "THUMB_VARIANT & arm_ext_v6t2" to support VSTMIA
+	instruction for MVE.
+	(fstmdbs): Moved inside "THUMB_VARIANT & arm_ext_v6t2" to support VSTMDB
+	instruction for MVE.
+	* testsuite/gas/arm/mve-ldst.d: New test.
+	* testsuite/gas/arm/mve-ldst.s: Likewise.
+
 2020-01-31  Nick Clifton  <nickc@redhat.com>
 
 	* po/fr.po: Updated French translation.
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 16cbac4279e..3adc5707684 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -24989,6 +24989,12 @@ static const struct asm_opcode insns[] =
  mcCE(fstd,	d000b00, 2, (RVD, ADDRGLDC),  vfp_dp_ldst),
  mcCE(flds,	d100a00, 2, (RVS, ADDRGLDC),  vfp_sp_ldst),
  mcCE(fsts,	d000a00, 2, (RVS, ADDRGLDC),  vfp_sp_ldst),
+
+  /* Memory operations.	 */
+ mcCE(fldmias,	c900a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmia),
+ mcCE(fldmdbs,	d300a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmdb),
+ mcCE(fstmias,	c800a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmia),
+ mcCE(fstmdbs,	d200a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmdb),
 #undef THUMB_VARIANT
 
   /* Moves and type conversions.  */
@@ -25003,17 +25009,13 @@ static const struct asm_opcode insns[] =
  cCE("fmxr",	ee00a10, 2, (RVC, RR),	      rn_rd),
 
   /* Memory operations.	 */
- cCE("fldmias",	c900a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmia),
  cCE("fldmfds",	c900a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmia),
- cCE("fldmdbs",	d300a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmdb),
  cCE("fldmeas",	d300a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmdb),
  cCE("fldmiax",	c900b00, 2, (RRnpctw, VRDLST),    vfp_xp_ldstmia),
  cCE("fldmfdx",	c900b00, 2, (RRnpctw, VRDLST),    vfp_xp_ldstmia),
  cCE("fldmdbx",	d300b00, 2, (RRnpctw, VRDLST),    vfp_xp_ldstmdb),
  cCE("fldmeax",	d300b00, 2, (RRnpctw, VRDLST),    vfp_xp_ldstmdb),
- cCE("fstmias",	c800a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmia),
  cCE("fstmeas",	c800a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmia),
- cCE("fstmdbs",	d200a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmdb),
  cCE("fstmfds",	d200a00, 2, (RRnpctw, VRSLST),    vfp_sp_ldstmdb),
  cCE("fstmiax",	c800b00, 2, (RRnpctw, VRDLST),    vfp_xp_ldstmia),
  cCE("fstmeax",	c800b00, 2, (RRnpctw, VRDLST),    vfp_xp_ldstmia),
diff --git a/gas/testsuite/gas/arm/mve-ldst.d b/gas/testsuite/gas/arm/mve-ldst.d
new file mode 100644
index 00000000000..b676b5c5148
--- /dev/null
+++ b/gas/testsuite/gas/arm/mve-ldst.d
@@ -0,0 +1,43 @@
+# name: MVE Floating point load multiple and store multiple instructions.
+# as: -march=armv8.1-m.main+mve
+# objdump: -dr --prefix-addresses --show-raw-insn -marmv8.1-m.main
+
+.*: +file format .*arm.*
+
+Disassembly of section .text:
+[^>]*> ecb0 8a01 	vldmia	r0!, {s16}
+[^>]*> ed30 8a01 	vldmdb	r0!, {s16}
+[^>]*> eca0 8a01 	vstmia	r0!, {s16}
+[^>]*> ed20 8a01 	vstmdb	r0!, {s16}
+[^>]*> ecb1 8a01 	vldmia	r1!, {s16}
+[^>]*> ed31 8a01 	vldmdb	r1!, {s16}
+[^>]*> eca1 8a01 	vstmia	r1!, {s16}
+[^>]*> ed21 8a01 	vstmdb	r1!, {s16}
+[^>]*> ecb2 8a01 	vldmia	r2!, {s16}
+[^>]*> ed32 8a01 	vldmdb	r2!, {s16}
+[^>]*> eca2 8a01 	vstmia	r2!, {s16}
+[^>]*> ed22 8a01 	vstmdb	r2!, {s16}
+[^>]*> ecb4 8a01 	vldmia	r4!, {s16}
+[^>]*> ed34 8a01 	vldmdb	r4!, {s16}
+[^>]*> eca4 8a01 	vstmia	r4!, {s16}
+[^>]*> ed24 8a01 	vstmdb	r4!, {s16}
+[^>]*> ecb7 8a01 	vldmia	r7!, {s16}
+[^>]*> ed37 8a01 	vldmdb	r7!, {s16}
+[^>]*> eca7 8a01 	vstmia	r7!, {s16}
+[^>]*> ed27 8a01 	vstmdb	r7!, {s16}
+[^>]*> ecb8 8a01 	vldmia	r8!, {s16}
+[^>]*> ed38 8a01 	vldmdb	r8!, {s16}
+[^>]*> eca8 8a01 	vstmia	r8!, {s16}
+[^>]*> ed28 8a01 	vstmdb	r8!, {s16}
+[^>]*> ecba 8a01 	vldmia	sl!, {s16}
+[^>]*> ed3a 8a01 	vldmdb	sl!, {s16}
+[^>]*> ecaa 8a01 	vstmia	sl!, {s16}
+[^>]*> ed2a 8a01 	vstmdb	sl!, {s16}
+[^>]*> ecbc 8a01 	vldmia	ip!, {s16}
+[^>]*> ed3c 8a01 	vldmdb	ip!, {s16}
+[^>]*> ecac 8a01 	vstmia	ip!, {s16}
+[^>]*> ed2c 8a01 	vstmdb	ip!, {s16}
+[^>]*> ecbe 8a01 	vldmia	lr!, {s16}
+[^>]*> ed3e 8a01 	vldmdb	lr!, {s16}
+[^>]*> ecae 8a01 	vstmia	lr!, {s16}
+[^>]*> ed2e 8a01 	vstmdb	lr!, {s16}
diff --git a/gas/testsuite/gas/arm/mve-ldst.s b/gas/testsuite/gas/arm/mve-ldst.s
new file mode 100644
index 00000000000..c8bbebe88bc
--- /dev/null
+++ b/gas/testsuite/gas/arm/mve-ldst.s
@@ -0,0 +1,13 @@
+.arch armv8.1-m.main
+.arch_extension dsp
+.arch_extension mve
+.syntax unified
+.thumb
+.text
+
+.irp op0, r0, r1, r2, r4, r7, r8, r10, r12, r14
+vldmia.32 \op0!,{s16}
+vldmdb.32 \op0!,{s16}
+vstmia.32 \op0!,{s16}
+vstmdb.32 \op0!,{s16}
+.endr