diff --git a/gas/testsuite/gas/aarch64/illegal-sysreg-7.d b/gas/testsuite/gas/aarch64/illegal-sysreg-7.d
new file mode 100644
index 0000000000000000000000000000000000000000..d7a11ed3720fdca8e2c3b8c965dc2cebe3ddac24
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/illegal-sysreg-7.d
@@ -0,0 +1,2 @@
+#source: illegal-sysreg-7.s
+#warning_output: illegal-sysreg-7.l
diff --git a/gas/testsuite/gas/aarch64/illegal-sysreg-7.l b/gas/testsuite/gas/aarch64/illegal-sysreg-7.l
new file mode 100644
index 0000000000000000000000000000000000000000..1db54b345309a4fd3df641f985741ee7abac0fbb
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/illegal-sysreg-7.l
@@ -0,0 +1,2 @@
+.*: Assembler messages:
+.*: Warning: specified register cannot be written to at operand 1 -- `msr ich_vtr_el2,x0'
diff --git a/gas/testsuite/gas/aarch64/illegal-sysreg-7.s b/gas/testsuite/gas/aarch64/illegal-sysreg-7.s
new file mode 100644
index 0000000000000000000000000000000000000000..311e18227b28673746c29c16cbbf325a1467ede4
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/illegal-sysreg-7.s
@@ -0,0 +1,2 @@
+/* Write to R/O system registers.  */
+msr ich_vtr_el2, x0
diff --git a/gas/testsuite/gas/aarch64/sysreg-7.d b/gas/testsuite/gas/aarch64/sysreg-7.d
new file mode 100644
index 0000000000000000000000000000000000000000..1564f530c673bb696066d8180d470d25d903ac4f
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/sysreg-7.d
@@ -0,0 +1,25 @@
+#objdump: -dr
+
+.*:     file format .*
+
+Disassembly of section \.text:
+
+0+ <.*>:
+
+.*:	d538a460 	mrs	x0, lorc_el1
+.*:	d538a420 	mrs	x0, lorea_el1
+.*:	d538a440 	mrs	x0, lorn_el1
+.*:	d538a400 	mrs	x0, lorsa_el1
+.*:	d53ecc80 	mrs	x0, icc_ctlr_el3
+.*:	d538cca0 	mrs	x0, icc_sre_el1
+.*:	d53cc9a0 	mrs	x0, icc_sre_el2
+.*:	d53ecca0 	mrs	x0, icc_sre_el3
+.*:	d53ccb20 	mrs	x0, ich_vtr_el2
+.*:	d518a460 	msr	lorc_el1, x0
+.*:	d518a420 	msr	lorea_el1, x0
+.*:	d518a440 	msr	lorn_el1, x0
+.*:	d518a400 	msr	lorsa_el1, x0
+.*:	d51ecc80 	msr	icc_ctlr_el3, x0
+.*:	d518cca0 	msr	icc_sre_el1, x0
+.*:	d51cc9a0 	msr	icc_sre_el2, x0
+.*:	d51ecca0 	msr	icc_sre_el3, x0
diff --git a/gas/testsuite/gas/aarch64/sysreg-7.s b/gas/testsuite/gas/aarch64/sysreg-7.s
new file mode 100644
index 0000000000000000000000000000000000000000..3d438d1c74ad65e4b9b5120e22d70765a42eb7ac
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/sysreg-7.s
@@ -0,0 +1,20 @@
+/* Read from system registers.  */
+mrs x0, lorc_el1
+mrs x0, lorea_el1
+mrs x0, lorn_el1
+mrs x0, lorsa_el1
+mrs x0, icc_ctlr_el3
+mrs x0, icc_sre_el1
+mrs x0, icc_sre_el2
+mrs x0, icc_sre_el3
+mrs x0, ich_vtr_el2
+
+/* Write to system registers.  */
+msr lorc_el1, x0
+msr lorea_el1, x0
+msr lorn_el1, x0
+msr lorsa_el1, x0
+msr icc_ctlr_el3, x0
+msr icc_sre_el1, x0
+msr icc_sre_el2, x0
+msr icc_sre_el3, x0
diff --git a/opcodes/aarch64-opc.c b/opcodes/aarch64-opc.c
index 1acca6c1a3dabac6b940be06c1be96eed1be6300..cafd7db755f3ced9881cd920e77bdf9eea077ec4 100644
--- a/opcodes/aarch64-opc.c
+++ b/opcodes/aarch64-opc.c
@@ -4570,6 +4570,16 @@ const aarch64_sys_reg aarch64_sys_regs [] =
   SR_CORE ("csrptr_el2",    CPENC (2,4,C8,C0,1),  0),
   SR_CORE ("csrptridx_el2", CPENC (2,4,C8,C0,3),  F_REG_READ),
 
+  SR_CORE ("lorc_el1",      CPENC (3,0,C10,C4,3),  0),
+  SR_CORE ("lorea_el1",     CPENC (3,0,C10,C4,1),  0),
+  SR_CORE ("lorn_el1",      CPENC (3,0,C10,C4,2),  0),
+  SR_CORE ("lorsa_el1",     CPENC (3,0,C10,C4,0),  0),
+  SR_CORE ("icc_ctlr_el3",  CPENC (3,6,C12,C12,4), 0),
+  SR_CORE ("icc_sre_el1",   CPENC (3,0,C12,C12,5), 0),
+  SR_CORE ("icc_sre_el2",   CPENC (3,4,C12,C9,5),  0),
+  SR_CORE ("icc_sre_el3",   CPENC (3,6,C12,C12,5), 0),
+  SR_CORE ("ich_vtr_el2",   CPENC (3,4,C12,C11,1), F_REG_READ),
+
   SR_CORE ("brbcr_el1",     CPENC (2,1,C9,C0,0),  0),
   SR_CORE ("brbcr_el12",    CPENC (2,5,C9,C0,0),  0),
   SR_CORE ("brbfcr_el1",    CPENC (2,1,C9,C0,1),  0),