diff --git a/gas/config/tc-riscv.c b/gas/config/tc-riscv.c
index 5759d3a5fc4..b84be9f0bf1 100644
--- a/gas/config/tc-riscv.c
+++ b/gas/config/tc-riscv.c
@@ -869,7 +869,7 @@ static const struct opcode_name_t opcode_name_list[] =
   /*reserved    0x5b.  */
   {"JAL",       0x6f},
   {"SYSTEM",    0x73},
-  /*reserved    0x77.  */
+  {"OP_P",      0x77},
   {"CUSTOM_3",  0x7b},
   /* >80b       0x7f.  */
 
diff --git a/gas/testsuite/gas/riscv/insn-dwarf.d b/gas/testsuite/gas/riscv/insn-dwarf.d
index b8bd42dff18..53fb85eb462 100644
--- a/gas/testsuite/gas/riscv/insn-dwarf.d
+++ b/gas/testsuite/gas/riscv/insn-dwarf.d
@@ -60,27 +60,28 @@ insn.s +53 +0x9a.*
 insn.s +54 +0x9e.*
 insn.s +55 +0xa2.*
 insn.s +57 +0xa6.*
-insn.s +59 +0xaa.*
-insn.s +60 +0xac.*
+insn.s +58 +0xaa.*
+insn.s +60 +0xae.*
 insn.s +61 +0xb0.*
-insn.s +62 +0xb6.*
-insn.s +63 +0xbe.*
-insn.s +64 +0xc8.*
-insn.s +65 +0xd4.*
-insn.s +66 +0xea.*
-insn.s +67 +0xec.*
+insn.s +62 +0xb4.*
+insn.s +63 +0xba.*
+insn.s +64 +0xc2.*
+insn.s +65 +0xcc.*
+insn.s +66 +0xd8.*
+insn.s +67 +0xee.*
 insn.s +68 +0xf0.*
-insn.s +69 +0xf6.*
-insn.s +70 +0xfe.*
-insn.s +71 +0x108.*
-insn.s +72 +0x114.*
-insn.s +74 +0x12a.*
-insn.s +75 +0x134.*
-insn.s +76 +0x13e.*
-insn.s +77 +0x154.*
-insn.s +78 +0x16a.*
-insn.s +79 +0x180.*
-insn.s +80 +0x196.*
-insn.s +81 +0x1ac.*
-insn.s +- +0x1c2
+insn.s +69 +0xf4.*
+insn.s +70 +0xfa.*
+insn.s +71 +0x102.*
+insn.s +72 +0x10c.*
+insn.s +73 +0x118.*
+insn.s +75 +0x12e.*
+insn.s +76 +0x138.*
+insn.s +77 +0x142.*
+insn.s +78 +0x158.*
+insn.s +79 +0x16e.*
+insn.s +80 +0x184.*
+insn.s +81 +0x19a.*
+insn.s +82 +0x1b0.*
+insn.s +- +0x1c6
 #pass
diff --git a/gas/testsuite/gas/riscv/insn-na.d b/gas/testsuite/gas/riscv/insn-na.d
index 55bf301656b..d43f07906fe 100644
--- a/gas/testsuite/gas/riscv/insn-na.d
+++ b/gas/testsuite/gas/riscv/insn-na.d
@@ -1,4 +1,4 @@
-#as: -march=rv32ifcv
+#as: -march=rv32ifcv_zvkned
 #source: insn.s
 #objdump: -dw -Mno-aliases
 
@@ -59,6 +59,7 @@ Disassembly of section .text:
 [^:]+:[ 	]+00c58533[ 	]+add[ 	]+a0,a1,a2
 [^:]+:[ 	]+00c58533[ 	]+add[ 	]+a0,a1,a2
 [^:]+:[ 	]+022180d7[ 	]+vadd\.vv[ 	]+v1,v2,v3
+[^:]+:[ 	]+a2402177[ 	]+vaesdm\.vv[ 	]+v2,v4
 [^:]+:[ 	]+0001[ 	]+c\.addi[ 	]+zero,0
 [^:]+:[ 	]+00000013[ 	]+addi[ 	]+zero,zero,0
 [^:]+:[ 	]+001f 0000 0000[ 	].*
diff --git a/gas/testsuite/gas/riscv/insn.d b/gas/testsuite/gas/riscv/insn.d
index 9411a6b1e19..4e84bce3ddf 100644
--- a/gas/testsuite/gas/riscv/insn.d
+++ b/gas/testsuite/gas/riscv/insn.d
@@ -1,4 +1,4 @@
-#as: -march=rv32ifcv
+#as: -march=rv32ifcv_zvkned
 #objdump: -dr
 
 .*:[ 	]+file format .*
@@ -70,6 +70,7 @@ Disassembly of section .text:
 [^:]+:[ 	]+00c58533[ 	]+add[ 	]+a0,a1,a2
 [^:]+:[ 	]+00c58533[ 	]+add[ 	]+a0,a1,a2
 [^:]+:[ 	]+022180d7[ 	]+vadd\.vv[ 	]+v1,v2,v3
+[^:]+:[ 	]+a2402177[ 	]+vaesdm\.vv[ 	]+v2,v4
 [^:]+:[ 	]+0001[ 	]+nop
 [^:]+:[ 	]+00000013[ 	]+nop
 [^:]+:[ 	]+001f 0000 0000[ 	].*
diff --git a/gas/testsuite/gas/riscv/insn.s b/gas/testsuite/gas/riscv/insn.s
index 48db59b14e8..915b7ecc963 100644
--- a/gas/testsuite/gas/riscv/insn.s
+++ b/gas/testsuite/gas/riscv/insn.s
@@ -55,6 +55,7 @@ target:
 	.insn r  0x33,  0,  0, fa0, fa1, fa2
 
 	.insn r  OP_V, 0, 1, x1, x3, x2
+	.insn r  OP_P, 2, 0x51, x2, x0, x4
 
 	.insn 0x0001
 	.insn 0x00000013