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unicorn/qemu
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Joseph Myers 59df0bae12
target/i386: fix packusdw in-place operation 
The SSE4.1 packusdw instruction combines source and destination
vectors of signed 32-bit integers into a single vector of unsigned
16-bit integers, with unsigned saturation. When the source and
destination are the same register, this means each 32-bit element of
that register is used twice as an input, to produce two of the 16-bit
output elements, and so if the operation is carried out
element-by-element in-place, no matter what the order in which it is
applied to the elements, the first element's operation will overwrite
some future input. The helper for packssdw avoids this issue by
computing the result in a local temporary and copying it to the
destination at the end; this patch fixes the packusdw helper to do
likewise. This fixes three gcc test failures in my GCC 6-based
testing.

Backports commit 80e19606215d4df370dfe8fe21c558a129f00f0b from qemu
2018-03-04 23:57:54 -05:00
..
accel target/arm: [tcg] Port to generic translation framework 2018-03-04 20:28:06 -05:00
crypto crypto: Clean up includes 2018-02-19 00:47:40 -05:00
default-configs arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
docs docs: clarify memory region lifecycle 2018-02-12 15:11:21 -05:00
fpu softfloat: define floatx80_round() 2018-03-03 20:57:27 -05:00
hw i386: Remove AMD feature flag aliases from Opteron models 2018-03-01 23:49:04 -05:00
include tcg/s390: Use constant pool for movi 2018-03-04 22:32:04 -05:00
qapi qapi: add explicit null to string input and output visitors 2018-03-03 20:32:50 -05:00
qobject qnum: add uint type 2018-03-03 18:37:56 -05:00
qom boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
scripts scripts: use build_ prefix for string not piped through cgen() 2018-03-03 22:11:28 -05:00
target target/i386: fix packusdw in-place operation 2018-03-04 23:57:54 -05:00
tcg tcg/mips: Fully convert tcg_target_op_def 2018-03-04 23:54:26 -05:00
util configure: Drop AIX host support 2018-03-04 21:32:40 -05:00
aarch64.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
aarch64eb.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
armeb.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
atomic_template.h tcg: Add atomic128 helpers 2018-02-27 21:43:48 -05:00
CODING_STYLE import 2015-08-21 15:04:50 +08:00
configure configure: Drop AIX host support 2018-03-04 21:32:40 -05:00
COPYING import 2015-08-21 15:04:50 +08:00
COPYING.LIB import 2015-08-21 15:04:50 +08:00
cpu-exec-common.c tcg: Add EXCP_ATOMIC 2018-02-27 11:57:58 -05:00
cpu-exec.c tcg: Move USE_DIRECT_JUMP discriminator to tcg/cpu/tcg-target.h 2018-03-04 21:52:35 -05:00
cpus.c tcg: handle EXCP_ATOMIC exception for system emulation 2018-03-02 09:56:43 -05:00
cputlb.c cputlb: Support generating CPU exceptions on memory transaction failures 2018-03-04 13:14:50 -05:00
exec.c memory: Open code FlatView rendering 2018-03-04 02:06:48 -05:00
gen_all_header.sh arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
glib_compat.c qapi: Improve qobject input visitor error reporting 2018-03-02 12:05:53 -05:00
HACKING import 2015-08-21 15:04:50 +08:00
header_gen.py tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
ioport.c hw: remove pio_addr_t 2018-02-24 02:43:16 -05:00
LICENSE import 2015-08-21 15:04:50 +08:00
m68k.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
Makefile Makefile: Add a FORCE target 2018-02-24 17:03:51 -05:00
Makefile.objs tcg: Add atomic helpers 2018-02-27 15:57:47 -05:00
Makefile.target tcg: Add generic translation framework 2018-03-04 14:31:16 -05:00
memory.c memory: Move FlatView allocation to a helper 2018-03-04 02:08:37 -05:00
memory_ldst.inc.c exec: introduce memory_ldst.inc.c 2018-03-01 09:59:34 -05:00
memory_mapping.c include/qemu/osdep.h: Don't include qapi/error.h 2018-02-21 23:08:18 -05:00
mips.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
mips64.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
mips64el.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
mipsel.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
powerpc.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
qapi-schema.json qapi: Update scripts to commit 01b2ffcedd94ad7b42bc870e4c6936c87ad03429 2018-03-03 18:32:12 -05:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
rules.mak rules.mak: Don't extract libs from .mo-libs in link command 2018-02-26 02:08:03 -05:00
softmmu_template.h cputlb: Support generating CPU exceptions on memory transaction failures 2018-03-04 13:14:50 -05:00
sparc.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
sparc64.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00
tcg-runtime.c tcg: Increase hit rate of lookup_tb_ptr 2018-03-03 17:16:23 -05:00
translate-all.c tcg: Infrastructure for managing constant pools 2018-03-04 22:17:33 -05:00
translate-all.h translate-all.c: Compute L1 page table properties at runtime 2018-02-26 11:46:58 -05:00
translate-common.c exec: Clean up includes 2018-02-19 00:49:55 -05:00
unicorn_common.h qom/cpu: Add MemoryRegion property 2018-02-18 21:54:50 -05:00
VERSION import 2015-08-21 15:04:50 +08:00
vl.c util: add cacheinfo 2018-03-03 16:58:28 -05:00
vl.h import 2015-08-21 15:04:50 +08:00
x86_64.h tcg: Add tcg_op_supported 2018-03-04 23:20:28 -05:00