Commit Graph

50310 Commits

Author SHA1 Message Date
Richard Henderson
ac815f46a3 target-m68k: Implement bitfield ops for registers
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1478699171-10637-5-git-send-email-rth@twiddle.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-01-14 10:06:21 +01:00
Peter Maydell
b6af8ea602 x86 and machine queue, 2017-01-17
Includes i386, CPU, NUMA, and memory backends changes.
 
 i386:
  target/i386: Fix bad patch application to translate.c
 
 CPU:
  qmp: Report QOM type name on query-cpu-definitions
 
 NUMA:
  numa: make -numa parser dynamically allocate CPUs masks
 
 Memory backends:
  qom: remove unused header
  monitor: reuse user_creatable_add_opts() instead of user_creatable_add()
  monitor: fix qmp/hmp query-memdev not reporting IDs of memory backends
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Merge remote-tracking branch 'remotes/ehabkost/tags/x86-and-machine-pull-request' into staging

x86 and machine queue, 2017-01-17

Includes i386, CPU, NUMA, and memory backends changes.

i386:
 target/i386: Fix bad patch application to translate.c

CPU:
 qmp: Report QOM type name on query-cpu-definitions

NUMA:
 numa: make -numa parser dynamically allocate CPUs masks

Memory backends:
 qom: remove unused header
 monitor: reuse user_creatable_add_opts() instead of user_creatable_add()
 monitor: fix qmp/hmp query-memdev not reporting IDs of memory backends

# gpg: Signature made Thu 12 Jan 2017 17:53:11 GMT
# gpg:                using RSA key 0x2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/x86-and-machine-pull-request:
  qmp: Report QOM type name on query-cpu-definitions
  numa: make -numa parser dynamically allocate CPUs masks
  target/i386: Fix bad patch application to translate.c
  monitor: fix qmp/hmp query-memdev not reporting IDs of memory backends
  monitor: reuse user_creatable_add_opts() instead of user_creatable_add()
  qom: remove unused header

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-13 14:38:21 +00:00
Peter Maydell
fdbd92f738 A couple of fixes to reduce the matrix some more that just missed the
last iteration.
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-travis-20170112-1' into staging

A couple of fixes to reduce the matrix some more that just missed the
last iteration.

# gpg: Signature made Thu 12 Jan 2017 13:01:49 GMT
# gpg:                using RSA key 0xFBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>"
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-travis-20170112-1:
  travis: add Trusty with clang stable build
  travis: trim out most clang builds

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-13 14:02:30 +00:00
Gerd Hoffmann
8417cd0029 sdl2: fix build failure on windows
Cc: Stefan Weil <sw@weilnetz.de>
Cc: Samuel Thibault <samuel.thibault@gnu.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Message-id: 1484295285-8809-1-git-send-email-kraxel@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-13 10:56:17 +00:00
Peter Maydell
b6c08970bc TriCore FPU patches
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Merge remote-tracking branch 'remotes/bkoppelmann/tags/pull-tricore-2017-01-11-2' into staging

TriCore FPU patches

# gpg: Signature made Wed 11 Jan 2017 13:40:11 GMT
# gpg:                using RSA key 0x0AD2C6396B69CA14
# gpg: Good signature from "Bastian Koppelmann <kbastian@mail.uni-paderborn.de>"
# Primary key fingerprint: 6E63 6A7E 83F2 DD0C FA6E  6E37 0AD2 C639 6B69 CA14

* remotes/bkoppelmann/tags/pull-tricore-2017-01-11-2:
  target-tricore: Add updfl instruction
  target-tricore: Added new JNE instruction variant
  target-tricore: Added new MOV instruction variant
  target-tricore: Added MADD.F and MSUB.F instructions
  target-tricore: Added FTOUZ instruction

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-12 18:29:49 +00:00
Peter Maydell
80fbc689e0 vga: fixes for virtio-gpu and cirrus.
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Merge remote-tracking branch 'remotes/kraxel/tags/pull-vga-20170111-1' into staging

vga: fixes for virtio-gpu and cirrus.

# gpg: Signature made Wed 11 Jan 2017 10:24:24 GMT
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/pull-vga-20170111-1:
  virtio-gpu: tag as not hotpluggable
  virtio-gpu: Fix memory leak in virtio_gpu_load()
  virtio-gpu: Recalculate VirtIOGPU::hostmem on VM load
  display: cirrus: ignore source pitch value as needed in blit_is_unsafe
  virtio-gpu: fix information leak in capset get dispatch

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-12 17:51:41 +00:00
Eduardo Habkost
8ed877b784 qmp: Report QOM type name on query-cpu-definitions
The new typename attribute on query-cpu-definitions will be used
to help management software use device-list-properties to check
which properties can be set using -cpu or -global for the CPU
model.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <1479320499-29818-1-git-send-email-ehabkost@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-12 15:51:36 -02:00
Igor Mammedov
cdda2018e3 numa: make -numa parser dynamically allocate CPUs masks
so it won't impose an additional limits on max_cpus limits
supported by different targets.

It removes global MAX_CPUMASK_BITS constant and need to
bump it up whenever max_cpus is being increased for
a target above MAX_CPUMASK_BITS value.

Use runtime max_cpus value instead to allocate sufficiently
sized node_cpu bitmasks in numa parser.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1479466974-249781-1-git-send-email-imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
[ehabkost: Added asserts to ensure cpu_index < max_cpus]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-12 15:51:36 -02:00
Doug Evans
410e98146f target/i386: Fix bad patch application to translate.c
In commit c52ab08aee,
the patch snippet for the "syscall" insn got applied to "iret".

Signed-off-by: Doug Evans <dje@google.com>
Message-Id: <f403045cde4049058c05446d5c04@google.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-12 15:51:35 -02:00
Igor Mammedov
e1ff3c67e8 monitor: fix qmp/hmp query-memdev not reporting IDs of memory backends
Considering 'id' is mandatory for user_creatable objects/backends
and user_creatable_add_type() always has it as an argument
regardless of where from it is called CLI/monitor or QMP,
Fix issue by adding 'id' property to hostmem backends and
set it in user_creatable_add_type() for every object that
implements 'id' property. Then later at query-memdev time
get 'id' from object directly.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1484052795-158195-4-git-send-email-imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-12 15:35:06 -02:00
Igor Mammedov
3a4641054e monitor: reuse user_creatable_add_opts() instead of user_creatable_add()
Simplify code by dropping ~57LOC by merging user_creatable_add()
into user_creatable_add_opts() and using the later from monitor.
Along with it allocate opts_visitor_new() once in user_creatable_add_opts().

As result we have one less API func and a more readable/simple
user_creatable_add_opts() vs user_creatable_add().

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1484052795-158195-3-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-12 15:34:47 -02:00
Peter Maydell
4201e616c0 audio: qomify drivers, hotplug fixes.
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Merge remote-tracking branch 'remotes/kraxel/tags/pull-audio-20170111-1' into staging

audio: qomify drivers, hotplug fixes.

# gpg: Signature made Wed 11 Jan 2017 09:32:09 GMT
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/pull-audio-20170111-1:
  es1370: wire up reset via DeviceClass
  audio: ac97: add exit function
  audio: es1370: add exit function
  hw/audio: QOM'ify pl041.c
  hw/audio: QOM'ify marvell_88w8618.c

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-12 15:57:18 +00:00
Igor Mammedov
8a000250f1 qom: remove unused header
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1484052795-158195-2-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-12 11:32:58 -02:00
Peter Maydell
0f2d17c1a5 TCG opcodes for extract, clz, ctz, ctpop
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Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20170110' into staging

TCG opcodes for extract, clz, ctz, ctpop

# gpg: Signature made Wed 11 Jan 2017 02:12:41 GMT
# gpg:                using RSA key 0xAD1270CC4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg:                 aka "Richard Henderson <rth@redhat.com>"
# gpg:                 aka "Richard Henderson <rth@twiddle.net>"
# Primary key fingerprint: 9CB1 8DDA F8E8 49AD 2AFC  16A4 AD12 70CC 4DD0 279B

* remotes/rth/tags/pull-tcg-20170110: (65 commits)
  tcg/i386: Handle ctpop opcode
  tcg/ppc: Handle ctpop opcode
  tcg: Use ctpop to generate ctz if needed
  tests: New test-bitcnt
  qemu/host-utils.h: Reduce the operation count in the fallback ctpop
  target-i386: Use ctpop helper
  target-tilegx: Use ctpop helper
  target-sparc: Use ctpop helper
  target-s390x: Avoid a loop for popcnt
  target-ppc: Use ctpop helper
  target-alpha: Use ctpop helper
  tcg: Add opcode for ctpop
  target-xtensa: Use clrsb helper
  target-tricore: Use clrsb helper
  target-arm: Use clrsb helper
  tcg: Add helpers for clrsb
  tcg/i386: Rely on undefined/undocumented behaviour of BSF/BSR
  tcg/i386: Handle ctz and clz opcodes
  tcg/i386: Allow bmi2 shiftx to have non-matching operands
  tcg/i386: Hoist common arguments in tcg_out_op
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-12 13:21:32 +00:00
Greg Kurz
204febd17f libqtest: handle zero length memwrite/memread
Some recently added tests pass a zero length to qtest_memwrite().
Unfortunately, the qtest protocol doesn't implement an on-the-wire
syntax for zero-length writes and the current code happily sends
garbage to QEMU. This causes intermittent failures.

It isn't worth the pain to enhance the protocol, so this patch
simply fixes the issue by "just return, doing nothing". The same
fix is applied to qtest_memread() since the issue also exists in
the QEMU part of the "memread" command.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 148412457273.22750.983275587432075569.stgit@bahia
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-12 10:45:59 +00:00
Alex Bennée
ae1a772c56 travis: add Trusty with clang stable build
Although we've reduced the matrix to avoid repeating clang builds we can
still add an additional clang build to use the latest stable version of
clang which will typically be available on current distros.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2017-01-12 10:04:17 +00:00
Daniel P. Berrange
d9a6b01311 travis: trim out most clang builds
We test with both gcc and clang in order to detect cases
where clang issues warnings that gcc misses. To achieve
this though we don't need to build QEMU in multiple
different configurations. Just a single clang-on-linux
build will be sufficient, if we have an "all enabled"
config.

This cuts the number of build jobs from 21 to 16,
reducing the load imposed on shared Travis CI infra.
This will make it practical to enable jobs for other
interesting & useful configurations without DOS'ing
Travis to much.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2017-01-12 10:04:17 +00:00
Bastian Koppelmann
50788a3fdb target-tricore: Add updfl instruction
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2017-01-11 14:37:37 +01:00
Peer Adelt
dedd8c9c32 target-tricore: Added new JNE instruction variant
If D[15] is != sign_ext(const4) then PC will be set to (PC +
zero_ext(disp4 + 16)).

[BK: fixed style errors]
Signed-off-by: Peer Adelt <peer.adelt@c-lab.de>
Message-Id: <1465314555-11501-5-git-send-email-peer.adelt@c-lab.de>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
2017-01-11 14:37:28 +01:00
Peer Adelt
550929dd46 target-tricore: Added new MOV instruction variant
Puts the content of data register D[a] into E[c][63:32] and the
content of data register D[b] into E[c][31:0].

[BK: fix style error]
[BK: Allocate temporaries only when needed]
Signed-off-by: Peer Adelt <peer.adelt@c-lab.de>
Message-Id: <1465314555-11501-4-git-send-email-peer.adelt@c-lab.de>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
2017-01-11 14:37:15 +01:00
Bastian Koppelmann
ddd7fead8c target-tricore: Added MADD.F and MSUB.F instructions
Multiplies D[a] and D[b] and adds/subtracts the result to/from D[d].
The result is put in D[c]. All operands are floating-point numbers.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2017-01-11 14:37:07 +01:00
Bastian Koppelmann
8f75983db8 target-tricore: Added FTOUZ instruction
Converts a 32-bit floating point number to an unsigned int. The
result is rounded towards zero.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2017-01-11 14:36:51 +01:00
Gerd Hoffmann
a2056e09b0 virtio-gpu: tag as not hotpluggable
qemu can't hotplug display devices.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 1483970138-20360-1-git-send-email-kraxel@redhat.com
2017-01-11 09:19:05 +01:00
Peter Maydell
c84f0f25db virtio-gpu: Fix memory leak in virtio_gpu_load()
Coverity points out that if we fail in the "creating resources"
loop in virtio_gpu_load() we will leak various resources (CID 1356431).
Failing a VM load is going to leave the simulation in a complete mess,
but we can tidy up to the point that a full system reset should
get us back to sanity.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1483969123-14839-3-git-send-email-peter.maydell@linaro.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-01-11 09:19:05 +01:00
Peter Maydell
039aa5db0e virtio-gpu: Recalculate VirtIOGPU::hostmem on VM load
The 'hostmem' field in VirtIOGPU is used to track the total memory
used in pixmaps so that we can impose a maximum limit on it.
However this field is neither migrated nor recalculated on
VM load, which means that after a migration it will be incorrectly
too low, which can allow the guest to use more pixmap memory
than it should. The per-resource hostmem fields are not filled
in either as we reallocate them in the load function.

Recalculate the memory used for each pixmap and the total memory
used as we reallocate the pixmaps in virtio_gpu_load().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1483969123-14839-2-git-send-email-peter.maydell@linaro.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-01-11 09:19:05 +01:00
Bruce Rogers
913a87885f display: cirrus: ignore source pitch value as needed in blit_is_unsafe
Commit 4299b90 added a check which is too broad, given that the source
pitch value is not required to be initialized for solid fill operations.
This patch refines the blit_is_unsafe() check to ignore source pitch in
that case. After applying the above commit as a security patch, we
noticed the SLES 11 SP4 guest gui failed to initialize properly.

Signed-off-by: Bruce Rogers <brogers@suse.com>
Message-id: 20170109203520.5619-1-brogers@suse.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-01-11 09:19:05 +01:00
Li Qiang
85d9d04447 virtio-gpu: fix information leak in capset get dispatch
In virgl_cmd_get_capset function, it uses g_malloc to allocate
a response struct to the guest. As the 'resp'struct hasn't been full
initialized it will lead the 'resp->padding' field to the guest.
Use g_malloc0 to avoid this.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 58188cae.4a6ec20a.3d2d1.aff2@mx.google.com

[ kraxel: resolved conflict ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-01-11 09:19:05 +01:00
Gerd Hoffmann
11f547e58a es1370: wire up reset via DeviceClass
Instead of using qemu_register_reset().
That way we get proper cleanup for free.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1484054281-26139-1-git-send-email-kraxel@redhat.com
2017-01-11 09:19:03 +01:00
Li Qiang
12351a91da audio: ac97: add exit function
Currently the ac97 device emulation doesn't have a exit function,
hot unplug this device will leak some memory. Add a exit function to
avoid this.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 58520052.4825ed0a.27a71.6cae@mx.google.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-01-11 09:19:03 +01:00
Li Qiang
069eb7b2b8 audio: es1370: add exit function
Currently the es1370 device emulation doesn't have a exit function,
hot unplug this device will leak some memory. Add a exit function to
avoid this.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 585200c9.a968ca0a.1ab80.4c98@mx.google.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-01-11 09:19:03 +01:00
xiaoqiang zhao
8becab9523 hw/audio: QOM'ify pl041.c
split the old SysBus init function into an instance_init
and Device realize function

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 20161231011720.3965-3-zxq_yx_007@163.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-01-11 09:19:03 +01:00
xiaoqiang zhao
c025d0abce hw/audio: QOM'ify marvell_88w8618.c
split the old SysBus init function into an instance_init
and Device realize function

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 20161231011720.3965-2-zxq_yx_007@163.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-01-11 09:19:03 +01:00
Richard Henderson
993508e43e tcg/i386: Handle ctpop opcode
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:49:59 -08:00
Richard Henderson
33e75fb9c8 tcg/ppc: Handle ctpop opcode
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:49:59 -08:00
Richard Henderson
14e99210f6 tcg: Use ctpop to generate ctz if needed
Particularly when andc is also available, this is two insns
shorter than using clz to compute ctz.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:49:59 -08:00
Alex Bennée
c3f8962f32 tests: New test-bitcnt
Add some unit tests for bit count functions (currently only ctpop). As
the routines are based on the Hackers Delight optimisations I based
the test patterns on their tests.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:49:59 -08:00
Richard Henderson
7bdcecb7b2 qemu/host-utils.h: Reduce the operation count in the fallback ctpop
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:49:59 -08:00
Richard Henderson
4885c3c495 target-i386: Use ctpop helper
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:49:59 -08:00
Richard Henderson
3253cddd21 target-tilegx: Use ctpop helper
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:49:59 -08:00
Richard Henderson
08da3180dc target-sparc: Use ctpop helper
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:49:55 -08:00
Richard Henderson
250a87d556 target-s390x: Avoid a loop for popcnt
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:48:57 -08:00
Richard Henderson
7977000220 target-ppc: Use ctpop helper
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:48:57 -08:00
Richard Henderson
de26a584d2 target-alpha: Use ctpop helper
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:48:56 -08:00
Richard Henderson
a768e4e992 tcg: Add opcode for ctpop
The number of actual invocations of ctpop itself does not warrent
an opcode, but it is very helpful for POWER7 to use in generating
an expansion for ctz.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:48:56 -08:00
Richard Henderson
3946c6aa3d target-xtensa: Use clrsb helper
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:47:48 -08:00
Richard Henderson
16256947eb target-tricore: Use clrsb helper
Tested-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:47:48 -08:00
Richard Henderson
bc21dbcc12 target-arm: Use clrsb helper
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:47:48 -08:00
Richard Henderson
086920c2c8 tcg: Add helpers for clrsb
The number of actual invocations does not warrent an opcode,
and the backends generating it.  But at least we can eliminate
redundant helpers.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:47:48 -08:00
Richard Henderson
4ac7691073 tcg/i386: Rely on undefined/undocumented behaviour of BSF/BSR
The ISA manual documents the output is undefined if the input was zero.

However, we document in target-i386 that the behavior of real silicon
is to preserve the contents of the output register.  We also mention
that there are real applications that depend on this.  That this is
baked into silicon is mentioned as a potential cause for some false
sharing behaviour wrt lzcnt/tzcnt.

Taking advantage of this allows us to save 2 insns in the normal case,
and 4 insns for i686 emulating a 64-bit clz.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:47:48 -08:00
Richard Henderson
bbf25f90ba tcg/i386: Handle ctz and clz opcodes
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10 08:47:48 -08:00