Commit f4a23e17 authored by Alex Bennée's avatar Alex Bennée
Browse files

tests/tcg/aarch64: add test-sve-ioctl guest-debug test 



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: default avatarAlex Bennée <alex.bennee@linaro.org>
Message-Id: <20200316172155.971-26-alex.bennee@linaro.org>
parent 2b6d6371

tests/tcg/aarch64/Makefile.target

+9 −2
Original line number Diff line number Diff line
@@ -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

tests/tcg/aarch64/gdbstub/test-sve-ioctl.py

0 → 100644
+85 −0
Original line number Diff line number Diff line 
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()

    if inferior.was_attached == False:

        print("SKIPPING (failed to attach)", file=sys.stderr)

        exit(0)

    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)