diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 0f7d7695c0eb9b2eb5431ca314c54edfed9b633e..c7837195e667a03d3f8f6d16b62c01ac875ee5fd 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -4929,6 +4929,22 @@ s_arm_unwind_pad (int ignored ATTRIBUTE_UNUSED)
   demand_empty_rest_of_line ();
 }
 
+/* Parse an unwind_pacspval directive.  */
+
+static void
+s_arm_unwind_pacspval (int ignored ATTRIBUTE_UNUSED)
+{
+  valueT op;
+
+  if (!unwind.proc_start)
+    as_bad (MISSING_FNSTART);
+
+  demand_empty_rest_of_line ();
+
+  op = 0xb5;
+  add_unwind_opcode (op, 1);
+}
+
 /* Parse an unwind_setfp directive.  */
 
 static void
@@ -5205,6 +5221,7 @@ const pseudo_typeS md_pseudo_table[] =
   { "vsave",		s_arm_unwind_save,	1 },
   { "movsp",		s_arm_unwind_movsp,	0 },
   { "pad",		s_arm_unwind_pad,	0 },
+  { "pacspval",		s_arm_unwind_pacspval,	0 },
   { "setfp",		s_arm_unwind_setfp,	0 },
   { "unwind_raw",	s_arm_unwind_raw,	0 },
   { "eabi_attribute",	s_arm_eabi_attribute,	0 },
diff --git a/gas/doc/c-arm.texi b/gas/doc/c-arm.texi
index 4016d3a76957e545ad8d3f1fad2067b94bb9b83e..8e00ccf55a5c86443e2977c3b8c6f4e6d7ef39d9 100644
--- a/gas/doc/c-arm.texi
+++ b/gas/doc/c-arm.texi
@@ -1085,6 +1085,12 @@ This directive writes 12-byte packed floating-point values to the
 output section.  These are not compatible with current ARM processors
 or ABIs.
 
+@anchor{arm_pacspval}
+@cindex @code{.pacspval} directive, ARM
+@item .pacspval
+Generate unwinder annotations to use effective vsp as modifier in PAC
+validation.
+
 @anchor{arm_pad}
 @cindex @code{.pad} directive, ARM
 @item .pad #@var{count}
diff --git a/gas/testsuite/gas/arm/ehabi-pacbti-m.d b/gas/testsuite/gas/arm/ehabi-pacbti-m.d
new file mode 100644
index 0000000000000000000000000000000000000000..6039945f931a2975ae4752a5f711e62a00b6ce69
--- /dev/null
+++ b/gas/testsuite/gas/arm/ehabi-pacbti-m.d
@@ -0,0 +1,15 @@
+# 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
+
+Unwind section '.ARM.exidx' at offset 0x5c contains 1 entry:
+
+0x0: @0x0
+  Compact model index: 1
+  0xb1 0x08 pop {r3}
+  0x80 0x08 pop {r7}
+  0xb4      pop {ra_auth_code}
+  0x84 0x00 pop {r14}
+  0xb1 0x0f pop {r0, r1, r2, r3}
+  0xb5      vsp as modifier for PAC validation
diff --git a/gas/testsuite/gas/arm/ehabi-pacbti-m.s b/gas/testsuite/gas/arm/ehabi-pacbti-m.s
new file mode 100644
index 0000000000000000000000000000000000000000..10185484c8c9716c394ab0cbe171c626b9847bfc
--- /dev/null
+++ b/gas/testsuite/gas/arm/ehabi-pacbti-m.s
@@ -0,0 +1,38 @@
+        .syntax unified
+        .thumb
+        .thumb_func
+	.fnstart
+	.cfi_startproc
+	.pacspval
+	pac	ip, lr, sp
+	.cfi_register 143, 12
+	push	{r0, r1, r2, r3}
+	.save {r0, r1, r2, r3}
+	.cfi_def_cfa_offset 16
+	.cfi_offset 0, -16
+	.cfi_offset 1, -12
+	.cfi_offset 2, -8
+	.cfi_offset 3, -4
+	push	{r3, r7, ip, lr}
+	.save {r3, r7, ra_auth_code, lr}
+	.cfi_def_cfa_offset 32
+	.cfi_offset 3, -32
+	.cfi_offset 7, -28
+	.cfi_offset 143, -24
+	.cfi_offset 14, -20
+	pop	{r3, r7, ip, lr}
+	.cfi_restore 14
+	.cfi_restore 143
+	.cfi_restore 7
+	.cfi_restore 3
+	.cfi_def_cfa_offset 0
+	add	sp, sp, #16
+	.cfi_restore 3
+	.cfi_restore 2
+	.cfi_restore 1
+	.cfi_restore 0
+	.cfi_def_cfa_offset -16
+	aut	ip, lr, sp
+	bx	lr
+	.cfi_endproc
+	.fnend