From ed369cd57e5bbe621e3c9f17a2531ca6ffacc874 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ciro=20Santilli=20=E5=85=AD=E5=9B=9B=E4=BA=8B=E4=BB=B6=20?=
 =?UTF-8?q?=E6=B3=95=E8=BD=AE=E5=8A=9F?= <ciro.santilli@gmail.com>
Date: Wed, 3 Jun 2020 01:00:00 +0000
Subject: [PATCH] userland/arch/aarch64/dump_regs.c

---
 README.adoc                       |  4 +++-
 path_properties.py                |  4 ++++
 userland/arch/aarch64/dump_regs.c | 13 +++++++++++++
 3 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 userland/arch/aarch64/dump_regs.c

diff --git a/README.adoc b/README.adoc
index edd841e..295995c 100644
--- a/README.adoc
+++ b/README.adoc
@@ -9300,8 +9300,10 @@ Converting `arch/*` images to `vmlinux` is possible in theory x86 with https://g
 The following kernel modules and <<baremetal>> executables dump and disassemble various registers which cannot be observed from userland (usually "system registers", "control registers"):
 
 * link:kernel_modules/dump_regs.c[]
-* link:baremetal/arch/aarch64/dump_regs.c[]
+* link:userland/arch/arm/dump_regs.c[]
+* link:userland/arch/aarch64/dump_regs.c[]
 * link:baremetal/arch/arm/dump_regs.c[]
+* link:baremetal/arch/aarch64/dump_regs.c[]
 
 Some of those programs are using:
 
diff --git a/path_properties.py b/path_properties.py
index 7316296..f51b13d 100644
--- a/path_properties.py
+++ b/path_properties.py
@@ -544,6 +544,10 @@ path_properties_tuples = (
                                         },
                                     },
                                 ),
+                                'dump_regs.c': {
+                                    # https://gem5.atlassian.net/browse/GEM5-619
+                                    'allowed_emulators': {'qemu'},
+                                },
                                 'freestanding': (
                                     freestanding_properties,
                                     {
diff --git a/userland/arch/aarch64/dump_regs.c b/userland/arch/aarch64/dump_regs.c
new file mode 100644
index 0000000..947dc76
--- /dev/null
+++ b/userland/arch/aarch64/dump_regs.c
@@ -0,0 +1,13 @@
+/* https://cirosantilli.com/linux-kernel-module-cheat#dump-regs */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <lkmc.h>
+#include <lkmc/aarch64.h>
+
+int main(void) {
+    lkmc_sysreg_print_cntvct_el0();
+    lkmc_sysreg_print_cntfrq_el0();
+    return EXIT_SUCCESS;
+}