This test exercises the gdbstub while runing the sve-iotcl test. I
haven't plubmed it into make system as we need a way of verifying if
gdb has the right support for SVE.
Signed-off-by: Alex Bennée <alex.ben...@linaro.org>
---
v4
- interrogate ZCR_EL1 directly as no longer have vg
v5
- plumb in
- skip if fails to connect
v6
- fix for vg
v7
- change to vg size, also better trap failure in zreg access
---
tests/tcg/aarch64/Makefile.target | 11 ++-
tests/tcg/aarch64/gdbstub/test-sve-ioctl.py | 82 +++++++++++++++++++++
2 files changed, 91 insertions(+), 2 deletions(-)
create mode 100644 tests/tcg/aarch64/gdbstub/test-sve-ioctl.py
diff --git a/tests/tcg/aarch64/Makefile.target
b/tests/tcg/aarch64/Makefile.target
index c879932ff6c..d99b2a9eced 100644
--- a/tests/tcg/aarch64/Makefile.target
+++ b/tests/tcg/aarch64/Makefile.target
@@ -54,15 +54,22 @@ sve-ioctls: CFLAGS+=-march=armv8.1-a+sve
ifneq ($(HAVE_GDB_BIN),)
GDB_SCRIPT=$(SRC_PATH)/tests/guest-debug/run-test.py
-AARCH64_TESTS += gdbstub-sysregs
+AARCH64_TESTS += gdbstub-sysregs gdbstub-sve-ioctls
-.PHONY: gdbstub-sysregs
+.PHONY: gdbstub-sysregs gdbstub-sve-ioctls
run-gdbstub-sysregs: sysregs
$(call run-test, $@, $(GDB_SCRIPT) \
--gdb $(HAVE_GDB_BIN) \
--qemu $(QEMU) --qargs "$(QEMU_OPTS)" \
--bin $< --test $(AARCH64_SRC)/gdbstub/test-sve.py, \
"basic gdbstub SVE support")
+
+run-gdbstub-sve-ioctls: sve-ioctls
+ $(call run-test, $@, $(GDB_SCRIPT) \
+ --gdb $(HAVE_GDB_BIN) \
+ --qemu $(QEMU) --qargs "$(QEMU_OPTS)" \
+ --bin $< --test $(AARCH64_SRC)/gdbstub/test-sve-ioctl.py, \
+ "basic gdbstub SVE ZLEN support")
endif
endif
diff --git a/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py
b/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py
new file mode 100644
index 00000000000..5824abe09ac
--- /dev/null
+++ b/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py
@@ -0,0 +1,82 @@
+from __future__ import print_function
+#
+# Test the SVE ZReg reports the right amount of data. It uses the
+# sve-ioctl test and examines the register data each time the
+# __sve_ld_done breakpoint is hit.
+#
+# This is launched via tests/guest-debug/run-test.py
+#
+
+import gdb
+import sys
+
+initial_vlen = 0
+failcount = 0
+
+def report(cond, msg):
+ "Report success/fail of test"
+ if cond:
+ print ("PASS: %s" % (msg))
+ else:
+ print ("FAIL: %s" % (msg))
+ global failcount
+ failcount += 1
+
+class TestBreakpoint(gdb.Breakpoint):
+ def __init__(self, sym_name="__sve_ld_done"):
+ super(TestBreakpoint, self).__init__(sym_name)
+ # self.sym, ok = gdb.lookup_symbol(sym_name)
+
+ def stop(self):
+ val_i = gdb.parse_and_eval('i')
+ global initial_vlen
+ try:
+ for i in range(0, int(val_i)):
+ val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
+ report(int(val_z) == i, "z0.b.u[%d] == %d" % (i, i))
+ for i in range(i + 1, initial_vlen):
+ val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
+ report(int(val_z) == 0, "z0.b.u[%d] == 0" % (i))
+ except gdb.error:
+ report(False, "checking zregs (out of range)")
+
+
+def run_test():
+ "Run through the tests one by one"
+
+ print ("Setup breakpoint")
+ bp = TestBreakpoint()
+
+ global initial_vlen
+ vg = gdb.parse_and_eval("$vg")
+ initial_vlen = int(vg) * 8
+
+ gdb.execute("c")
+
+#
+# This runs as the script it sourced (via -x, via run-test.py)
+#
+try:
+ inferior = gdb.selected_inferior()
+ arch = inferior.architecture()
+ report(arch.name() == "aarch64", "connected to aarch64")
+except (gdb.error, AttributeError):
+ print("SKIPPING (not connected)", file=sys.stderr)
+ exit(0)
+
+try:
+ # These are not very useful in scripts
+ gdb.execute("set pagination off")
+ gdb.execute("set confirm off")
+
+ # Run the actual tests
+ run_test()
+except:
+ print ("GDB Exception: %s" % (sys.exc_info()[0]))
+ failcount += 1
+ import code
+ code.InteractiveConsole(locals=globals()).interact()
+ raise
+
+print("All tests complete: %d failures" % failcount)
+exit(failcount)
--
2.20.1
