diff --git a/src/cmd/asm/internal/asm/testdata/arm64.s b/src/cmd/asm/internal/asm/testdata/arm64.s
index f12cdaf921fc44..14a1c9141df1ec 100644
--- a/src/cmd/asm/internal/asm/testdata/arm64.s
+++ b/src/cmd/asm/internal/asm/testdata/arm64.s
@@ -1777,6 +1777,7 @@ next:
 	MSR	R17, ZCR_EL1                       // 111218d5
 	SYS	$32768, R1                         // 018008d5
 	SYS	$32768                             // 1f8008d5
+	MSR	$1, DIT                            // 5f4103d5
 
 // TLBI instruction
 	TLBI	VMALLE1IS                          // 1f8308d5
diff --git a/src/cmd/internal/obj/arm64/asm7.go b/src/cmd/internal/obj/arm64/asm7.go
index c6601cb49e51d3..178c83c0bc6938 100644
--- a/src/cmd/internal/obj/arm64/asm7.go
+++ b/src/cmd/internal/obj/arm64/asm7.go
@@ -4229,6 +4229,9 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
 		// PSTATEfield can be special registers and special operands.
 		if p.To.Type == obj.TYPE_REG && p.To.Reg == REG_SPSel {
 			v = 0<<16 | 4<<12 | 5<<5
+		} else if p.To.Type == obj.TYPE_REG && p.To.Reg == REG_DIT {
+			// op1 = 011 (3) op2 = 010 (2)
+			v = 3<<16 | 2<<5
 		} else if p.To.Type == obj.TYPE_SPECIAL {
 			opd := SpecialOperand(p.To.Offset)
 			for _, pf := range pstatefield {