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2021-03-10target/ppc: Fix bcdsub. emulation when result overflowsFabiano Rosas
The commit d03b174a83 (target/ppc: simplify bcdadd/sub functions) meant to simplify some of the code but it inadvertently altered the way the CR6 field is set after the operation has overflowed. The CR6 bits are set based on the *unbounded* result of the operation, so we need to look at the result before returning from bcd_add_mag, otherwise we will look at 0 when it overflows. Consider the following subtraction: v0 = 0x9999999999999999999999999999999c (maximum positive BCD value) v1 = 0x0000000000000000000000000000001d (negative one BCD value) bcdsub. v0,v0,v1,0 The Power ISA 2.07B says: If the unbounded result is greater than zero, do the following. If PS=0, the sign code of the result is set to 0b1100. If PS=1, the sign code of the result is set to 0b1111. If the operation overflows, CR field 6 is set to 0b0101. Otherwise, CR field 6 is set to 0b0100. POWER9 hardware: vr0 = 0x0000000000000000000000000000000c (positive zero BCD value) cr6 = 0b0101 (0x5) (positive, overflow) QEMU: vr0 = 0x0000000000000000000000000000000c (positive zero BCD value) cr6 = 0b0011 (0x3) (zero, overflow) <--- wrong This patch reverts the part of d03b174a83 that introduced the problem and adds a test-case to avoid further regressions: before: $ make run-tcg-tests-ppc64le-linux-user (...) TEST bcdsub on ppc64le bcdsub: qemu/tests/tcg/ppc64le/bcdsub.c:58: test_bcdsub_gt: Assertion `(cr >> 4) == ((1 << 2) | (1 << 0))' failed. Fixes: d03b174a83 (target/ppc: simplify bcdadd/sub functions) Reported-by: Paul Clarke <pc@us.ibm.com> Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com> Message-Id: <20210222194035.2723056-1-farosas@linux.ibm.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-02-24meson.build: expose TCG cross compiler information in summaryAlex Bennée
Blink and you miss the cross TCG compiler stuff so lets display it with the rest of the compiler information. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20210222101455.12640-2-alex.bennee@linaro.org>
2021-02-18Hexagon (tests/tcg/hexagon) TCG tests - multiarchTaylor Simpson
Enable multiarch tests for Hexagon Modify tests/tcg/configure.sh Add reference files to tests/tcg/hexagon Signed-off-by: Taylor Simpson <tsimpson@quicinc.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <1612763186-18161-32-git-send-email-tsimpson@quicinc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-02-16tests/tcg/aarch64: Add mte smoke testsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210212184902.1251044-32-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-27tests/tcg/aarch64: Add bti smoke testsRichard Henderson
The note test requires gcc 10 for -mbranch-protection=standard. The mmap test uses PROT_BTI and does not require special compiler support. Acked-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201021173749.111103-13-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-09-30tests/tcg: reinstate or replace desired parts of rules.makPaolo Bonzini
Commit 660f79309303d696531ffb394719dfab3e0c42c0 was a bit overzealous with respect to tests/tcg, which needed quiet-command and $(BUILD_DIR). Reinstate quiet-command, and replace $(BUILD_DIR) with just the current directory. Reported-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-09-01tests/tcg: Add microblaze to arches filterRichard Henderson
Not attempting to use a single cross-compiler for both big-endian and little-endian at this time. Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-08-21meson: link emulators without Makefile.targetPaolo Bonzini
The binaries move to the root directory, e.g. qemu-system-i386 or qemu-arm. This requires changes to qtests, CI, etc. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-07-11tests/docker: update toolchain set in debian-xtensa-crossMax Filippov
Switch to the prebuilt xtensa toolchains release 2020.07. Drop csp toolchain as the csp core is not a part of QEMU. Add de233_fpu and dsp3400 toolchains to enable DFPU and FPU2000 tests. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> [AJB: fix path in configure.sh] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200708082347.27318-1-jcmvbkbc@gmail.com> Message-Id: <20200709141327.14631-13-alex.bennee@linaro.org>
2020-07-11tests/tcg: add more default compilers to configure.shAlex Bennée
We were missing a bunch of compilers which we could use if they were locally installed. The defaults are based on Debian as they seem to be the best distro for well distributed cross-build compilers. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200701135652.1366-32-alex.bennee@linaro.org>
2020-05-27tests/docker: use a gcc-10 based image for arm64 testsAlex Bennée
As we enable newer features that we want to test on arm64 targets we need newer compilers. Split off a new debian-arm64-test-cross image which we can use to build these new tests. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200520140541.30256-11-alex.bennee@linaro.org>
2020-02-25tests/tcg: fix typo in configure.sh test for v8.3Alex Bennée
Although most people use the docker images this can trip up on developer systems with actual valid cross-compilers! Fixes: bb516dfc5b3 Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200225124710.14152-19-alex.bennee@linaro.org>
2020-02-04tests/tcg: gate pauth-% tests on having compiler supportAlex Bennée
Otherwise we end up failing to build our tests on CI which may have older compilers that the user expects. We can get rid of this once we can fallback to multiarch containers. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200203090932.19147-14-alex.bennee@linaro.org>
2020-02-04tests/tcg: add a configure compiler check for ARMv8.1 and SVEAlex Bennée
We will need this for some tests later. The docker images already support it by default. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200203090932.19147-13-alex.bennee@linaro.org>
2019-12-18configure: allow disable of cross compilation containersAlex Bennée
Our docker infrastructure isn't quite as multiarch as we would wish so lets allow the user to disable it if they want. This will allow us to use still run check-tcg on non-x86 CI setups. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Cleber Rosa <crosa@redhat.com> Tested-by: Cleber Rosa <crosa@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Richard Henderson <richard.henderson@linaro.org>
2019-09-10tests/docker: move our arm64 cross compile to BusterAlex Bennée
Now Buster is released we can unify our cross build images for both QEMU and tests. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-09-10tests/tcg: move configuration to a sub-shell scriptPaolo Bonzini
Avoid the repeated inclusions of config-target.mak, which have risks of namespace pollution, and instead build minimal configuration files in a configuration script. The same configuration files can also be included in Makefile and Makefile.qemu [AJB 10/09/19] In the original PR this had inadvertently enabled tests for ppc64abi32. However as the rest of the multiarch tests work rather than disabling the otherwise correctly functioning build I've just skipped the failing linux-test test. For some reason I can't debug it with TCG so I'm leaving that to the PPC maintainers to look at. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20190807143523.15917-4-pbonzini@redhat.com> [AJB: s/docker/container/, rm last bits from configure, ppc6432abi hack] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Cc: Richard Henderson <rth@twiddle.net>