diff mbox series

[v2,2/2] tests/tcg/aarch64: userspace system register test

Message ID 20180518114424.18054-3-alex.bennee@linaro.org
State New
Headers show
Series support reading of CNT[VCT|FRQ]_EL0 from user-space | expand

Commit Message

Alex Bennée May 18, 2018, 11:44 a.m. UTC 
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

---
 tests/tcg/aarch64/Makefile.target |  2 +-
 tests/tcg/aarch64/sysregs.c       | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 tests/tcg/aarch64/sysregs.c

-- 
2.17.0
diff mbox series

Patch

diff --git a/tests/tcg/aarch64/Makefile.target b/tests/tcg/aarch64/Makefile.target
index ac177d9747..595927f027 100644
--- a/tests/tcg/aarch64/Makefile.target
+++ b/tests/tcg/aarch64/Makefile.target
@@ -7,7 +7,7 @@  VPATH 		+= $(AARCH64_SRC)
 
 # we don't build any of the ARM tests
 AARCH64_TESTS=$(filter-out $(ARM_TESTS), $(TESTS))
-AARCH64_TESTS+=fcvt
+AARCH64_TESTS+=fcvt sysregs
 TESTS:=$(AARCH64_TESTS)
 
 fcvt: LDFLAGS+=-lm
diff --git a/tests/tcg/aarch64/sysregs.c b/tests/tcg/aarch64/sysregs.c
new file mode 100644
index 0000000000..0cd0c42d8c
--- /dev/null
+++ b/tests/tcg/aarch64/sysregs.c
@@ -0,0 +1,14 @@ 
+#include <stdio.h>
+
+#define get_cpu_reg(id) ({                                      \
+                unsigned long __val;                            \
+                asm("mrs %0, "#id : "=r" (__val));              \
+                printf("%-20s: 0x%016lx\n", #id, __val);        \
+        })
+
+int main(void)
+{
+    get_cpu_reg(cntvct_el0);
+    get_cpu_reg(cntfrq_el0);
+    return 0;
+}