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qemu-patch-raspberry4/tests
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Joseph Myers 975af797f1 target/i386: fix IEEE x87 floating-point exception raising 
Most x87 instruction implementations fail to raise the expected IEEE
floating-point exceptions because they do nothing to convert the
exception state from the softfloat machinery into the exception flags
in the x87 status word.  There is special-case handling of division to
raise the divide-by-zero exception, but that handling is itself buggy:
it raises the exception in inappropriate cases (inf / 0 and nan / 0,
which should not raise any exceptions, and 0 / 0, which should raise
"invalid" instead).

Fix this by converting the floating-point exceptions raised during an
operation by the softfloat machinery into exceptions in the x87 status
word (passing through the existing fpu_set_exception function for
handling related to trapping exceptions).  There are special cases
where some functions convert to integer internally but exceptions from
that conversion are not always correct exceptions for the instruction
to raise.

There might be scope for some simplification if the softfloat
exception state either could always be assumed to be in sync with the
state in the status word, or could always be ignored at the start of
each instruction and just set to 0 then; I haven't looked into that in
detail, and it might run into interactions with the various ways the
emulation does not yet handle trapping exceptions properly.  I think
the approach taken here, of saving the softfloat state, setting
exceptions there to 0 and then merging the old exceptions back in
after carrying out the operation, is conservatively safe.

Signed-off-by: Joseph Myers <joseph@codesourcery.com>
Message-Id: <alpine.DEB.2.21.2005152120280.3469@digraph.polyomino.org.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-10 12:10:51 -04:00
..
acceptance raspi2 acceptance test: add test for dwc-hsotg (dwc2) USB host 2020-06-05 17:23:09 +01:00
data acpi: unit-test: Update WAET ACPI Table expected binaries 2020-05-04 10:25:03 -04:00
decode decodetree: Allow !function with no input bits 2019-08-19 08:03:41 -07:00
docker docker.py/build: support binary files in --extra-files 2020-06-10 12:09:31 -04:00
fp softfloat: Change tininess_before_rounding to bool 2020-05-19 08:41:16 -07:00
guest-debug tests/guest-debug: catch hanging guests 2020-05-15 15:25:07 +01:00
image-fuzzer image-fuzzer: Use OSerror.strerror instead of tuple subscript 2019-11-05 16:36:11 +01:00
keys
migration tests/migration/guestperf: Use Python 3 interpreter 2020-05-31 18:25:31 +02:00
multiboot tests/multiboot: Fix load address of test kernels 2019-07-30 12:25:43 +02:00
perf/block/qcow2 tests/perf: Test lseek influence on qcow2 block-status 2019-06-04 15:20:41 +02:00
plugin tests/plugins: make howvec clean-up after itself. 2020-02-25 20:20:23 +00:00
qapi-schema qapi: New special feature flag "deprecated" 2020-03-17 21:42:47 +01:00
qemu-iotests Python queue: 2020-05-31 21:49:07 +01:00
qtest tests: machine-none-test: Enable MicroBlaze testing 2020-06-10 12:10:45 -04:00
rocker
tcg target/i386: fix IEEE x87 floating-point exception raising 2020-06-10 12:10:51 -04:00
uefi-test-tools edk2 build scripts: work around TianoCore#1607 without forcing Python 2 2019-10-07 15:14:15 +02:00
vm tests/vm: allow wait_ssh() to specify command 2020-05-31 18:25:31 +02:00
vmstate-static-checker-data
.gitignore tests/tcg/aarch64: add a gdbstub testcase for SVE registers 2020-03-17 17:38:47 +00:00
atomic64-bench.c
atomic_add-bench.c
benchmark-crypto-cipher.c tests: benchmark crypto with fixed data size, not time period 2019-10-28 13:32:21 +01:00
benchmark-crypto-hash.c crypto: extend hash benchmark to cover more algorithms 2020-05-07 12:52:51 +01:00
benchmark-crypto-hmac.c
check-block-qdict.c
check-block.sh build: move TARGET_GPROF to config-host.mak 2020-02-12 16:29:27 +01:00
check-qdict.c tests: Move qdict-test-data.txt to tests/data/qobject/ 2019-03-07 22:05:54 +01:00
check-qjson.c test: Use g_strndup instead of plain strndup 2019-08-21 10:27:13 +02:00
check-qlist.c qobject: Eliminate qlist_iter(), use QLIST_FOREACH_ENTRY() instead 2020-04-30 06:51:15 +02:00
check-qlit.c
check-qnull.c
check-qnum.c
check-qobject.c
check-qom-interface.c
check-qom-proplist.c qom: Drop @errp parameter of object_property_del() 2020-05-15 07:08:14 +02:00
check-qstring.c
crypto-tls-psk-helpers.c
crypto-tls-psk-helpers.h Supply missing header guards 2019-06-12 13:20:21 +02:00
crypto-tls-x509-helpers.c
crypto-tls-x509-helpers.h Supply missing header guards 2019-06-12 13:20:21 +02:00
dbus-vmstate-daemon.sh tests: add dbus-vmstate-test 2020-01-06 18:41:32 +04:00
io-channel-helpers.c
io-channel-helpers.h Normalize position of header guard 2019-06-12 13:20:20 +02:00
iothread.c tests/iothread: Always connect iothread GSource to a GMainContext 2020-01-07 14:32:57 +00:00
iothread.h
Makefile.include linux-user pull request 20200605-v2 2020-06-08 11:04:57 +01:00
pkix_asn1_tab.c
ptimer-test-stubs.c util/qemu-timer: refactor deadline calculation for external timers 2019-08-20 17:26:21 +02:00
ptimer-test.c tests/ptimer: Remove unnecessary inclusion of libqtest.h 2020-01-12 11:42:40 +01:00
ptimer-test.h
qht-bench.c
rcutorture.c tests/rcutorture: mild documenting refactor of update thread 2020-02-25 17:42:59 +00:00
requirements.txt Acceptance test: add "boot_linux" tests 2020-03-17 18:55:52 -04:00
socket-helpers.c tests: specify the address family when checking bind 2019-08-22 17:30:25 +04:00
socket-helpers.h tests: specify the address family when checking bind 2019-08-22 17:30:25 +04:00
test-aio-multithread.c tests: Do not use "\n" in g_test_message() strings 2019-03-07 22:16:22 +01:00
test-aio.c util/async: make bh_aio_poll() O(1) 2020-02-22 08:26:47 +00:00
test-authz-list.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
test-authz-listfile.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
test-authz-pam.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
test-authz-simple.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
test-base64.c
test-bdrv-drain.c block: Drop @child_class from bdrv_child_perm() 2020-05-18 19:05:25 +02:00
test-bdrv-graph-mod.c block: Drop @child_class from bdrv_child_perm() 2020-05-18 19:05:25 +02:00
test-bitcnt.c
test-bitmap.c tests: use g_test_rand_int 2019-12-17 09:05:23 +01:00
test-bitops.c
test-block-backend.c Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
test-block-iothread.c block: Use bdrv_default_perms() 2020-05-18 19:05:25 +02:00
test-blockjob-txn.c job: drop job_drain 2019-09-10 08:58:43 +02:00
test-blockjob.c job: take each job's lock individually in job_txn_apply 2020-04-07 14:34:47 +02:00
test-bufferiszero.c
test-char.c chardev: Use QEMUChrEvent enum in IOEventHandler typedef 2020-01-08 11:15:35 +01:00
test-clone-visitor.c tests: Rename UserDefNativeListUnion to UserDefListUnion 2019-03-05 14:43:11 +01:00
test-coroutine.c tests: Do not use "\n" in g_test_message() strings 2019-03-07 22:16:22 +01:00
test-crypto-afsplit.c
test-crypto-block.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
test-crypto-cipher.c
test-crypto-hash.c
test-crypto-hmac.c
test-crypto-ivgen.c
test-crypto-pbkdf.c
test-crypto-secret.c
test-crypto-tlscredsx509.c glib: use portable g_setenv() 2019-12-17 09:05:23 +01:00
test-crypto-tlssession.c glib: use portable g_setenv() 2019-12-17 09:05:23 +01:00
test-crypto-xts.c
test-cutils.c
test-hbitmap.c block/dirty-bitmap: improve _next_dirty_area API 2020-03-18 14:03:46 -04:00
test-image-locking.c Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
test-int128.c
test-io-channel-buffer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
test-io-channel-command.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
test-io-channel-file.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
test-io-channel-socket.c socket: Add num connections to qio_channel_socket_async() 2019-09-03 23:24:42 +02:00
test-io-channel-tls.c glib: use portable g_setenv() 2019-12-17 09:05:23 +01:00
test-io-task.c io/task: Move 'qom/object.h' header to source 2020-06-10 12:09:37 -04:00
test-iov.c
test-keyval.c test-keyval: Tighten test of trailing crap after size 2019-12-18 12:28:44 +01:00
test-logging.c tests/test-logging: Fix test for -dfilter 0..0xffffffffffffffff 2020-04-29 08:01:52 +02:00
test-mul64.c
test-opts-visitor.c
test-qapi-util.c
test-qdev-global-props.c qom: Drop parameter @errp of object_property_add() & friends 2020-05-15 07:07:58 +02:00
test-qdist.c
test-qemu-opts.c test-qemu-opts: Simplify test_has_help_option() after bug fix 2020-04-29 08:01:51 +02:00
test-qga.c tests: use g_test_rand_int 2019-12-17 09:05:23 +01:00
test-qgraph.c tests: test-qgraph: fix a memory leak 2019-03-11 16:33:49 +01:00
test-qht-par.c
test-qht.c
test-qmp-cmds.c qapi: Add feature flags to remaining definitions 2020-03-17 19:58:34 +01:00
test-qmp-event.c tests/test-qmp-event: Check event is actually emitted 2020-03-17 19:58:34 +01:00
test-qobject-input-visitor.c tests: Rename UserDefNativeListUnion to UserDefListUnion 2019-03-05 14:43:11 +01:00
test-qobject-output-visitor.c qapi: Assert output visitors see only valid enum values 2020-04-30 07:26:09 +02:00
test-rcu-list.c tests: Fix a bug with count variables 2020-03-06 10:35:15 +00:00
test-rcu-simpleq.c
test-rcu-slist.c rcu_queue: add QSLIST functions 2020-02-22 08:26:47 +00:00
test-rcu-tailq.c
test-replication.c tests/test-replication.c: Add test for for secondary node continuing replication 2020-03-03 18:04:47 +08:00
test-shift128.c
test-string-input-visitor.c tests: Fix uninitialized byte in test_visitor_in_fuzz 2019-08-20 17:26:19 +02:00
test-string-output-visitor.c qapi: Assert output visitors see only valid enum values 2020-04-30 07:26:09 +02:00
test-thread-pool.c test-thread-pool: be more reliable 2019-06-03 14:03:00 +02:00
test-throttle.c test-throttle: Fix uninitialized use of burst_length 2019-08-20 17:26:19 +02:00
test-timed-average.c
test-util-filemonitor.c tests/test-util-filemonitor: Skip test on non-x86 Travis containers 2019-12-18 20:17:45 +00:00
test-util-sockets.c tests/util-sockets: add abstract unix socket cases 2020-05-20 10:34:45 +01:00
test-uuid.c
test-visitor-serialization.c
test-vmstate.c test-vmstate: Fix memleaks in test_load_qlist 2020-02-28 09:25:49 +01:00
test-write-threshold.c
test-x86-cpuid.c hw/i386: Update structures to save the number of nodes per package 2020-03-17 19:48:10 -04:00
test-xbzrle.c
vhost-user-bridge.c core: replace getpagesize() with qemu_real_host_page_size 2019-10-26 15:38:06 +02:00