[PATCH 1/2] aarch64: Add FEAT_MPAMv2_VID system registers
richard.ball@arm.com
richard.ball@arm.com
Thu Jan 15 18:42:19 GMT 2026
From: Richard Ball <Richard.Ball@arm.com>
This patch adds the system registers defined by
FEAT_MPAMv2_VID. These registers are:
*mpamvidcr_el2
*mpamvidsr_el2
*mpamvidsr_el3
---
gas/testsuite/gas/aarch64/sysreg/mpamv2_vid-bad.d | 3 +++
gas/testsuite/gas/aarch64/sysreg/mpamv2_vid-bad.l | 13 +++++++++++++
gas/testsuite/gas/aarch64/sysreg/mpamv2_vid.d | 14 ++++++++++++++
gas/testsuite/gas/aarch64/sysreg/mpamv2_vid.s | 5 +++++
opcodes/aarch64-sys-regs.def | 3 +++
5 files changed, 38 insertions(+)
create mode 100644 gas/testsuite/gas/aarch64/sysreg/mpamv2_vid-bad.d
create mode 100644 gas/testsuite/gas/aarch64/sysreg/mpamv2_vid-bad.l
create mode 100644 gas/testsuite/gas/aarch64/sysreg/mpamv2_vid.d
create mode 100644 gas/testsuite/gas/aarch64/sysreg/mpamv2_vid.s
diff --git a/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid-bad.d b/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid-bad.d
new file mode 100644
index 00000000000..5d00da59694
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid-bad.d
@@ -0,0 +1,3 @@
+#as: -march=armv9.4-a -menable-sysreg-checking -I$srcdir/$subdir
+#source: mpamv2_vid.s
+#error_output: mpamv2_vid-bad.l
diff --git a/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid-bad.l b/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid-bad.l
new file mode 100644
index 00000000000..6ab3d16fba0
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid-bad.l
@@ -0,0 +1,13 @@
+.*: Assembler messages:
+.*: Error: selected processor does not support system register name 'mpamvidcr_el2'
+.*: Info: macro invoked from here
+.*: Error: selected processor does not support system register name 'mpamvidcr_el2'
+.*: Info: macro invoked from here
+.*: Error: selected processor does not support system register name 'mpamvidsr_el2'
+.*: Info: macro invoked from here
+.*: Error: selected processor does not support system register name 'mpamvidsr_el2'
+.*: Info: macro invoked from here
+.*: Error: selected processor does not support system register name 'mpamvidsr_el3'
+.*: Info: macro invoked from here
+.*: Error: selected processor does not support system register name 'mpamvidsr_el3'
+.*: Info: macro invoked from here
diff --git a/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid.d b/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid.d
new file mode 100644
index 00000000000..88c0c1883d8
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid.d
@@ -0,0 +1,14 @@
+#as: -menable-sysreg-checking -march=armv8-a+mpamv2 -I$srcdir/$subdir
+#objdump: -dr
+
+.*: file format .*
+
+Disassembly of section \.text:
+
+0+ <.*>:
+.*: d51ca700 msr mpamvidcr_el2, x0
+.*: d53ca700 mrs x0, mpamvidcr_el2
+.*: d51ca720 msr mpamvidsr_el2, x0
+.*: d53ca720 mrs x0, mpamvidsr_el2
+.*: d51ea720 msr mpamvidsr_el3, x0
+.*: d53ea720 mrs x0, mpamvidsr_el3
diff --git a/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid.s b/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid.s
new file mode 100644
index 00000000000..132d48f0781
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/sysreg/mpamv2_vid.s
@@ -0,0 +1,5 @@
+.include "sysreg-test-utils.inc"
+
+ rw_sys_reg mpamvidcr_el2
+ rw_sys_reg mpamvidsr_el2
+ rw_sys_reg mpamvidsr_el3
diff --git a/opcodes/aarch64-sys-regs.def b/opcodes/aarch64-sys-regs.def
index 1c57598d52d..f4761438716 100644
--- a/opcodes/aarch64-sys-regs.def
+++ b/opcodes/aarch64-sys-regs.def
@@ -929,6 +929,9 @@
SYSREG ("mpamhcr_el2", CPENC (3,4,10,4,0), 0, AARCH64_FEATURE (V8_2A)) /* MPAM */
SYSREG ("mpamidr_el1", CPENC (3,0,10,4,4), F_REG_READ, AARCH64_FEATURE (V8_2A)) /* MPAM */
SYSREG ("mpamsm_el1", CPENC (3,0,10,5,3), 0, AARCH64_FEATURES (2, SME, V8_2A)) /* SME && MPAM */
+ SYSREG ("mpamvidcr_el2", CPENC (3,4,10,7,0), 0, AARCH64_FEATURE (MPAMv2))
+ SYSREG ("mpamvidsr_el2", CPENC (3,4,10,7,1), 0, AARCH64_FEATURE (MPAMv2))
+ SYSREG ("mpamvidsr_el3", CPENC (3,6,10,7,1), 0, AARCH64_FEATURE (MPAMv2))
SYSREG ("mpamvpm0_el2", CPENC (3,4,10,6,0), 0, AARCH64_FEATURE (V8_2A)) /* MPAM */
SYSREG ("mpamvpm1_el2", CPENC (3,4,10,6,1), 0, AARCH64_FEATURE (V8_2A)) /* MPAM */
SYSREG ("mpamvpm2_el2", CPENC (3,4,10,6,2), 0, AARCH64_FEATURE (V8_2A)) /* MPAM */
--
2.34.1
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