Check that reserved SCS registers return 0 at read, and writes are ignored.
Based-on: <20180627143815.1829-1-j...@jms.id.au> Based-on: <20180630091343.14391-1-stefa...@redhat.com> Signed-off-by: Julia Suvorova <jus...@mail.ru> --- Test will work if Joel's patches will use ARMv6-M. tests/Makefile.include | 2 ++ tests/tcg/arm/test-reserved-reg.c | 60 +++++++++++++++++++++++++++++++ 2 files changed, 62 insertions(+) create mode 100644 tests/tcg/arm/test-reserved-reg.c diff --git a/tests/Makefile.include b/tests/Makefile.include index d323c42682..8ab0b0d15f 100644 --- a/tests/Makefile.include +++ b/tests/Makefile.include @@ -387,6 +387,7 @@ gcov-files-arm-y += hw/timer/arm_mptimer.c check-qtest-arm-y += tests/boot-serial-test$(EXESUF) check-qtest-arm-y += tests/sdhci-test$(EXESUF) check-qtest-arm-y += tests/hexloader-test$(EXESUF) +check-qtest-arm-y += tests/tcg/arm/test-reserved-reg$(EXESUF) check-qtest-aarch64-y = tests/numa-test$(EXESUF) check-qtest-aarch64-y += tests/sdhci-test$(EXESUF) @@ -771,6 +772,7 @@ tests/device-introspect-test$(EXESUF): tests/device-introspect-test.o tests/rtc-test$(EXESUF): tests/rtc-test.o tests/m48t59-test$(EXESUF): tests/m48t59-test.o tests/hexloader-test$(EXESUF): tests/hexloader-test.o +tests/test-reserved-reg$(EXESUF): tests/tcg/arm/test-reserved-reg.o tests/endianness-test$(EXESUF): tests/endianness-test.o tests/spapr-phb-test$(EXESUF): tests/spapr-phb-test.o $(libqos-obj-y) tests/prom-env-test$(EXESUF): tests/prom-env-test.o $(libqos-obj-y) diff --git a/tests/tcg/arm/test-reserved-reg.c b/tests/tcg/arm/test-reserved-reg.c new file mode 100644 index 0000000000..97273ff24d --- /dev/null +++ b/tests/tcg/arm/test-reserved-reg.c @@ -0,0 +1,60 @@ +/* + * Test ARMv6-M SCS reserved registers + * + * Copyright (c) 2018 Julia Suvorova <jus...@mail.ru> + * + * This work is licensed under the terms of the GNU GPL, version 2 + * or later. See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "libqtest.h" + +static void test_reserved_reg(void) +{ + QTestState *s; + int i; + static const uint64_t reserved_reg[] = { 0xe000ed10, /* SCR */ + 0xe000ed18, /* SHPR1 */ + 0xe000ed28, /* CFSR */ + 0xe000ed2c, /* HFSR */ + 0xe000ed34, /* MMFAR */ + 0xe000ed38, /* BFAR */ + 0xe000ed3c, /* AFSR */ + 0xe000ed40, /* CPUID */ + 0xe000ed88, /* CPACR */ + 0xe000ef00 /* STIR */ }; + static const uint8_t mini_kernel[] = { 0x00, 0x00, 0x00, 0x00, + 0x09, 0x00, 0x00, 0x00 }; + ssize_t wlen, kernel_size = sizeof(mini_kernel); + int code_fd; + char codetmp[] = "/tmp/reserved-reg-test-XXXXXX"; + + code_fd = mkstemp(codetmp); + wlen = write(code_fd, mini_kernel, sizeof(mini_kernel)); + g_assert(wlen == kernel_size); + close(code_fd); + + s = qtest_startf("-kernel %s -M microbit -nographic", codetmp); + + for (i = 0; i < ARRAY_SIZE(reserved_reg); i++) { + int res; + qtest_writel(s, reserved_reg[i], 1); + res = qtest_readl(s, reserved_reg[i]); + g_assert(!res); + } + + qtest_quit(s); +} + +int main(int argc, char **argv) +{ + int ret; + + g_test_init(&argc, &argv, NULL); + + qtest_add_func("tcg/arm/test-reserved-reg", test_reserved_reg); + ret = g_test_run(); + + return ret; +} -- 2.17.1