Philippe Mathieu-Daudé 07d46408cb target/sh4: Fix SUBV opcode ...

The documentation says:

  SUBV Rm, Rn        Rn - Rm -> Rn, underflow -> T

The overflow / underflow can be calculated as:

  T = ((Rn ^ Rm) & (Result ^ Rn)) >> 31

However we were using the incorrect:

  T = ((Rn ^ Rm) & (Result ^ Rm)) >> 31

Fix by using the Rn register instead of Rm.

Add tests provided by Paul Cercueil.

Cc: qemu-stable@nongnu.org
Fixes: ad8d25a11f ("target-sh4: implement addv and subv using TCG")
Reported-by: Paul Cercueil <paul@crapouillou.net>
Suggested-by: Paul Cercueil <paul@crapouillou.net>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2318
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <20240430163125.77430-3-philmd@linaro.org>
(cherry picked from commit e88a856efd)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

2024-05-04 09:37:20 +03:00

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avocado

tests/avocado: update sunxi kernel from armbian to 6.6.16

2024-05-01 09:01:23 +03:00

bench

migration/xbzrle: Use i386 host/cpuinfo.h

2023-05-23 16:51:18 -07:00

data

tests/acpi: Update DSDT.cxl to reflect change _STA return value.

2024-02-15 11:29:04 +03:00

decode

tests/: spelling fixes

2023-09-08 13:08:52 +03:00

docker

tests/docker: Add sqlite3 module to openSUSE Leap container

2024-02-13 08:48:56 +03:00

fp

tests: fp: remove unused submodules

2023-06-07 11:05:09 +02:00

guest-debug

tests/tcg: clean-up gdb confirm/pagination settings

2023-08-30 14:57:50 +01:00

image-fuzzer

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include

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keys

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lcitool

tests/docker: Add sqlite3 module to openSUSE Leap container

2024-02-13 08:48:56 +03:00

migration

tests/migration: Introduce dirty-limit into guestperf

2023-11-03 07:48:25 +01:00

multiboot

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perf/block/qcow2

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plugin

plugins: fix win plugin tests on cross compile

2023-11-23 14:10:04 +00:00

qapi-schema

tests/qapi-schema: Tidy up pylint warnings and advice

2023-11-13 10:36:51 +01:00

qemu-iotests

iotests: add test for stream job with an unaligned prefetch read

2024-03-27 09:43:09 +03:00

qtest

tests/qtest: Depend on dbus_display1_dep

2024-02-20 19:01:51 +03:00

rocker

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tcg

target/sh4: Fix SUBV opcode

2024-05-04 09:37:20 +03:00

tsan

tests/tsan: Rename the file with the entries that should be ignored

2023-11-13 11:35:47 +01:00

uefi-test-tools

tests/: spelling fixes

2023-09-08 13:08:52 +03:00

unit

tests/unit: Bump test-replication timeout to 60 seconds

2024-03-20 17:33:40 +03:00

vm

tests/vm: avoid re-building the VM images all the time

2024-02-28 21:21:04 +03:00

vmstate-static-checker-data

hw: Replace anti-social QOM type names

2021-03-19 15:18:43 +01:00

dbus-vmstate-daemon.sh

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Makefile.include

tests: respect --enable/--disable-download for Avocado

2023-11-24 12:07:47 +01:00

meson.build

Makefile: build plugins before running TCG tests

2023-10-02 18:04:39 +02:00

test-qht-par.c

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vhost-user-bridge.c

error handling: Use RETRY_ON_EINTR() macro where applicable

2023-01-09 13:50:47 +01:00