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Iglesias" , Richard Henderson , Alexandre Iooss , qemu-arm@nongnu.org, =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Cleber Rosa , kvm@vger.kernel.org, Beraldo Leal , Thomas Huth , =?UTF-8?q?Alex=20Benn=C3=A9e?= Subject: [PATCH v3 13/18] tests/tcg: enable basic testing for aarch64_be-linux-user Date: Wed, 23 Oct 2024 12:34:01 +0100 Message-Id: <20241023113406.1284676-14-alex.bennee@linaro.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241023113406.1284676-1-alex.bennee@linaro.org> References: <20241023113406.1284676-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::533; envelope-from=alex.bennee@linaro.org; helo=mail-ed1-x533.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1729683417087116600 We didn't notice breakage of aarch64_be because we don't have any TCG tests for it. However while the existing aarch64 compiler can target big-endian builds no one packages a BE libc. Instead we bang some rocks together to do the most basic of hello world with a nostdlib syscall test. Message-Id: <20241022105614.839199-14-alex.bennee@linaro.org> Reviewed-by: Pierrick Bouvier Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson Signed-off-by: Alex Benn=C3=A9e --- v2 - fix checkpatch complaints v3 - fix libc typo --- configure | 5 ++++ tests/tcg/aarch64_be/hello.c | 35 ++++++++++++++++++++++++++++ tests/tcg/Makefile.target | 7 +++++- tests/tcg/aarch64_be/Makefile.target | 17 ++++++++++++++ 4 files changed, 63 insertions(+), 1 deletion(-) create mode 100644 tests/tcg/aarch64_be/hello.c create mode 100644 tests/tcg/aarch64_be/Makefile.target diff --git a/configure b/configure index 72d1a94225..7dd3400ccb 100755 --- a/configure +++ b/configure @@ -1418,6 +1418,7 @@ probe_target_compiler() { target_arch=3D${1%%-*} case $target_arch in aarch64) container_hosts=3D"x86_64 aarch64" ;; + aarch64_be) container_hosts=3D"x86_64 aarch64" ;; alpha) container_hosts=3Dx86_64 ;; arm) container_hosts=3D"x86_64 aarch64" ;; hexagon) container_hosts=3Dx86_64 ;; @@ -1447,6 +1448,10 @@ probe_target_compiler() { case $target_arch in # debian-all-test-cross architectures =20 + aarch64_be) + container_image=3Ddebian-all-test-cross + container_cross_prefix=3Daarch64-linux-gnu- + ;; hppa|m68k|mips|riscv64|sparc64) container_image=3Ddebian-all-test-cross ;; diff --git a/tests/tcg/aarch64_be/hello.c b/tests/tcg/aarch64_be/hello.c new file mode 100644 index 0000000000..a9b2ab45de --- /dev/null +++ b/tests/tcg/aarch64_be/hello.c @@ -0,0 +1,35 @@ +/* + * Non-libc syscall hello world for Aarch64 BE + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#define __NR_write 64 +#define __NR_exit 93 + +int write(int fd, char *buf, int len) +{ + register int x0 __asm__("x0") =3D fd; + register char *x1 __asm__("x1") =3D buf; + register int x2 __asm__("x2") =3D len; + register int x8 __asm__("x8") =3D __NR_write; + + asm volatile("svc #0" : : "r"(x0), "r"(x1), "r"(x2), "r"(x8)); + + return len; +} + +void exit(int ret) +{ + register int x0 __asm__("x0") =3D ret; + register int x8 __asm__("x8") =3D __NR_exit; + + asm volatile("svc #0" : : "r"(x0), "r"(x8)); + __builtin_unreachable(); +} + +void _start(void) +{ + write(1, "Hello World\n", 12); + exit(0); +} diff --git a/tests/tcg/Makefile.target b/tests/tcg/Makefile.target index 2da70b2fcf..9722145b97 100644 --- a/tests/tcg/Makefile.target +++ b/tests/tcg/Makefile.target @@ -103,9 +103,14 @@ ifeq ($(filter %-softmmu, $(TARGET)),) # then the target. If there are common tests shared between # sub-targets (e.g. ARM & AArch64) then it is up to # $(TARGET_NAME)/Makefile.target to include the common parent -# architecture in its VPATH. +# architecture in its VPATH. However some targets are so minimal we +# can't even build the multiarch tests. +ifneq ($(filter $(TARGET_NAME),aarch64_be),) +-include $(SRC_PATH)/tests/tcg/$(TARGET_NAME)/Makefile.target +else -include $(SRC_PATH)/tests/tcg/multiarch/Makefile.target -include $(SRC_PATH)/tests/tcg/$(TARGET_NAME)/Makefile.target +endif =20 # Add the common build options CFLAGS+=3D-Wall -Werror -O0 -g -fno-strict-aliasing diff --git a/tests/tcg/aarch64_be/Makefile.target b/tests/tcg/aarch64_be/Ma= kefile.target new file mode 100644 index 0000000000..cbe5fa0b2d --- /dev/null +++ b/tests/tcg/aarch64_be/Makefile.target @@ -0,0 +1,17 @@ +# -*- Mode: makefile -*- +# +# A super basic AArch64 BE makefile. As we don't have any big-endian +# libc available the best we can do is a basic Hello World. + +AARCH64BE_SRC=3D$(SRC_PATH)/tests/tcg/aarch64_be +VPATH +=3D $(AARCH64BE_SRC) + +AARCH64BE_TEST_SRCS=3D$(notdir $(wildcard $(AARCH64BE_SRC)/*.c)) +AARCH64BE_TESTS=3D$(AARCH64BE_TEST_SRCS:.c=3D) +#MULTIARCH_TESTS =3D $(MULTIARCH_SRCS:.c=3D) + +# We need to specify big-endian cflags +CFLAGS +=3D-mbig-endian -ffreestanding +LDFLAGS +=3D-nostdlib + +TESTS +=3D $(AARCH64BE_TESTS) --=20 2.39.5