AVX includes an additional set of comparison predicates, some of which
our softfloat implementation does not expose as separate functions.
Rewrite the helpers in terms of floatN_compare for future extensibility.
Signed-off-by: Paul Brook <paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220424220204.2493824-24-paul@nowt.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Prepare the "easy" floating point vector helpers for AVX
No functional changes to existing helpers.
Signed-off-by: Paul Brook <paul@nowt.org>
Message-Id: <20220424220204.2493824-16-paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
These helpers need to take special care to avoid overwriting source values
before the wole result has been calculated. Currently they use a dummy
Reg typed variable to store the result then assign the whole register.
This will cause 128 bit operations to corrupt the upper half of the register,
so replace it with explicit temporaries and element assignments.
Signed-off-by: Paul Brook <paul@nowt.org>
Message-Id: <20220424220204.2493824-14-paul@nowt.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
More preparatory work for AVX support in various integer vector helpers
No functional changes to existing helpers.
Signed-off-by: Paul Brook <paul@nowt.org>
Message-Id: <20220424220204.2493824-13-paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Rewrite the "simple" vector integer helpers in preperation for AVX support.
While the current code is able to use the same prototype for unary
(a = F(b)) and binary (a = F(b, c)) operations, future changes will cause
them to diverge.
No functional changes to existing helpers
Signed-off-by: Paul Brook <paul@nowt.org>
Message-Id: <20220424220204.2493824-12-paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Rewrite the vector shift helpers in preperation for AVX support (3 operand
form and 256 bit vectors).
For now keep the existing two operand interface.
No functional changes to existing helpers.
Signed-off-by: Paul Brook <paul@nowt.org>
Message-Id: <20220424220204.2493824-11-paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use a union to store the various possible kinds of function pointers, and
access the correct one based on the flags.
SSEOpHelper_table6 and SSEOpHelper_table7 right now only have one case,
but this would change with AVX's 3- and 4-argument operations. Use
unions there too, to keep the code more similar for the three tables.
Extracted from a patch by Paul Brook <paul@nowt.org>.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
For AVX we're going to need both 128 bit (xmm) and 256 bit (ymm) variants of
floating point helpers. Add the register type suffix to the existing
*PS and *PD helpers (SS and SD variants are only valid on 128 bit vectors)
No functional changes.
Signed-off-by: Paul Brook <paul@nowt.org>
Message-Id: <20220424220204.2493824-15-paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Extracted from a patch by Paul Brook <paul@nowt.org>.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Put more flags to work to avoid hardcoding lists of opcodes. The op7 case
for SSE_OPF_CMP is included for homogeneity and because AVX needs it, but
it is never used by SSE or MMX.
Extracted from a patch by Paul Brook <paul@nowt.org>.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Handle 3DNOW instructions early to avoid complicating the MMX/SSE logic.
Signed-off-by: Paul Brook <paul@nowt.org>
Message-Id: <20220424220204.2493824-25-paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a flags field each row in sse_op_table6 and sse_op_table7.
Initially this is only used as a replacement for the magic SSE41_SPECIAL
pointer. The other flags are mostly relevant for the AVX implementation
but can be applied to SSE as well.
Signed-off-by: Paul Brook <paul@nowt.org>
Message-Id: <20220424220204.2493824-6-paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a flags field to each row in sse_op_table1.
Initially this is only used as a replacement for the magic
SSE_SPECIAL and SSE_DUMMY pointers, the other flags are mostly
relevant for the AVX implementation but can be applied to SSE as well.
Signed-off-by: Paul Brook <paul@nowt.org>
Message-Id: <20220424220204.2493824-5-paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a convenience macro to get the address of an xmm_regs element within
CPUX86State.
This was originally going to be the basis of an implementation that broke
operations into 128 bit chunks. I scrapped that idea, so this is now a purely
cosmetic change. But I think a worthwhile one - it reduces the number of
function calls that need to be split over multiple lines.
No functional changes.
Signed-off-by: Paul Brook <paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220424220204.2493824-9-paul@nowt.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Extracted from a patch by Paul Brook <paul@nowt.org>.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Write down explicitly the load/store sequence.
Extracted from a patch by Paul Brook <paul@nowt.org>.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tests for correct operation of most x86-64 SSE instructions.
It should cover all combinations of overlapping register and memory
operands on a set of random-ish data.
Results are bit-identical to an Intel i5-8500, with the exception of
the RCPSS and RSQRT approximations where the real CPU gives less accurate
results (the Intel spec allows relative errors up to 1.5 * 2^-12)
Signed-off-by: Paul Brook <paul@nowt.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220424220204.2493824-42-paul@nowt.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In the first 7.2 queue we have changes in the powernv pnv-phb handling,
the start of the QOMification of the ppc405 model, the removal of the
taihu machine, a new SLOF image and others.
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Merge tag 'pull-ppc-20220831' of https://gitlab.com/danielhb/qemu into staging
ppc patch queue for 2022-08-31:
In the first 7.2 queue we have changes in the powernv pnv-phb handling,
the start of the QOMification of the ppc405 model, the removal of the
taihu machine, a new SLOF image and others.
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# gpg: Signature made Wed 31 Aug 2022 16:09:58 EDT
# gpg: using EDDSA key 17EBFF9923D01800AF2838193CD9CA96DE033164
# gpg: Good signature from "Daniel Henrique Barboza <danielhb413@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 17EB FF99 23D0 1800 AF28 3819 3CD9 CA96 DE03 3164
* tag 'pull-ppc-20220831' of https://gitlab.com/danielhb/qemu: (60 commits)
ppc4xx: Fix code style problems reported by checkpatch
ppc/ppc4xx: Fix sdram trace events
hw/ppc/Kconfig: Move imply before select
hw/ppc/sam460ex: Remove PPC405 dependency from sam460ex
ppc405: Move machine specific code to ppc405_boards.c
ppc/ppc405: QOM'ify FPGA
ppc/ppc405: Use an explicit I2C object
hw/intc/ppc-uic: Convert ppc-uic to a PPC4xx DCR device
ppc/ppc405: Use an embedded PPCUIC model in SoC state
ppc4xx: Rename ppc405-ebc to ppc4xx-ebc
ppc4xx: Move EBC model to ppc4xx_devs.c
ppc4xx: Rename ppc405-plb to ppc4xx-plb
ppc4xx: Move PLB model to ppc4xx_devs.c
ppc/ppc405: QOM'ify MAL
ppc/ppc405: QOM'ify PLB
ppc/ppc405: QOM'ify POB
ppc/ppc405: QOM'ify OPBA
ppc/ppc405: QOM'ify EBC
ppc/ppc405: QOM'ify DMA
ppc/ppc405: QOM'ify GPIO
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The DPPS (Dot Product) instruction is defined to first sum pairs of
intermediate results, then sum those values to get the final result.
i.e. (A+B)+(C+D)
We incrementally sum the results, i.e. ((A+B)+C)+D, which can result
in incorrect rouding.
For consistency, also change the variable names to the ones used
in the Intel SDM and implement DPPD following the manual.
Based on a patch by Paul Brook <paul@nowt.org>.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The computation must not overwrite neither the destination
nor the source before the last element has been computed.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cover all BMI1 and BMI2 instructions, both 32- and 64-bit.
Due to the use of inlines, the test now has to be compiled with -O2.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Include test-i386-bmi2, and specify manually the tests (only one for now)
that need -cpu max.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The KVM_DIRTY_GFN_F_DIRTY flag ensures that the entry is valid. If
the read of the fields are not ordered after the read of the flag,
QEMU might see stale values.
Cc: Gavin Shan <gshan@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
While Meson buildsystem accepts the 'false' as a value
for boolean options, it's not covered by the specification
and in general invalid. Some alternative Meson implementations,
like Muon, do not accept 'false' or 'true' as a valid value
for the boolean options.
See https://mesonbuild.com/Build-options.html
Signed-off-by: Anton Kochkov <anton.kochkov@proton.me>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220817143538.2107779-1-anton.kochkov@proton.me>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Instead of using feature_not_found(), which is not a good match because
there is no "remedy" to fix the lack of makecontext(), just print a
custom error.
This happens to remove the last use of feature_not_found(), so remove
the definition and the documentation.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
kvm_put_sregs2() fails to reset 'locked' CR4/CR0 bits upon vCPU reset when
it is in VMX root operation. Do kvm_put_msr_feature_control() before
kvm_put_sregs2() to (possibly) kick vCPU out of VMX root operation. It also
seems logical to do kvm_put_msr_feature_control() before
kvm_put_nested_state() and not after it, especially when 'real' nested
state is set.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220818150113.479917-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Make sure env->nested_state is cleaned up when a vCPU is reset, it may
be stale after an incoming migration, kvm_arch_put_registers() may
end up failing or putting vCPU in a weird state.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220818150113.479917-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In scsi_req_parse_cdb(), if the CDB length implied by the command type
exceeds the initialized portion of the command buffer, reject the request.
Rejected requests are recorded by the `scsi_req_parse_bad` trace event.
On example of a bug detected by this check is SunOS's use of interleaved
DMA and non-DMA commands. This guest behavior currently causes QEMU to
parse uninitialized memory as a SCSI command, with unpredictable
outcomes.
With the new check in place:
* QEMU consistently creates a trace event and rejects the request.
* SunOS retries the request(s) and is able to successfully boot from
disk.
Signed-off-by: John Millikin <john@john-millikin.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1127
Message-Id: <20220817053458.698416-2-john@john-millikin.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When a SCSI command is received from the guest, the CDB length implied
by the first byte might exceed the number of bytes the guest sent. In
this case scsi_req_new() will read uninitialized data, causing
unpredictable behavior.
Adds the buf_len parameter to scsi_req_new() and plumbs it through the
call stack.
Signed-off-by: John Millikin <john@john-millikin.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1127
Message-Id: <20220817053458.698416-1-john@john-millikin.com>
[Fill in correct length for adapters other than ESP. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Per investigation on the linked ticket, SunOS issues a SCSI bus reset
to the ESP as part of its boot sequence. If this ESP command doesn't
cause devices to assert sense flag UNIT ATTENTION, SunOS will consider
the CD-ROM device to be non-compliant with Common Command Set (CCS).
In this condition, the SunOS installer's early userspace doesn't set
the installation source location to sr0 and the miniroot copy fails.
Signed-off-by: John Millikin <john@john-millikin.com>
Suggested-by: Bill Paul <noisetube@gmail.com>
Buglink: https://gitlab.com/qemu-project/qemu/-/issues/1127
Message-Id: <20220817053846.699310-1-john@john-millikin.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This bit is not saved across interrupts, so we must
delay delivering the interrupt until the skip has
been processed.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1118
Reviewed-by: Michael Rolnik <mrolnik@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We cannot deliver two interrupts simultaneously;
the first interrupt handler must execute first.
Reviewed-by: Michael Rolnik <mrolnik@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
There is no need to go through cc->tcg_ops when
we know what value that must have.
Reviewed-by: Michael Rolnik <mrolnik@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
While there are no target-specific nonfaulting probes,
generic code may grow some uses at some point.
Note that the attrs argument was incorrect -- it should have
been MEMTXATTRS_UNSPECIFIED. Just use the simpler interface.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* Two preparation patches for the upcoming removal of the slirp submodule
* Some other small test fixes (typos, etc.)
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Merge tag 'testing-pull-request-2022-08-30' of https://gitlab.com/thuth/qemu into staging
* First batch of patches to get qtests adapted for Windows
* Two preparation patches for the upcoming removal of the slirp submodule
* Some other small test fixes (typos, etc.)
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# gpg: Signature made Tue 30 Aug 2022 14:29:11 EDT
# gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg: issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg: aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5
* tag 'testing-pull-request-2022-08-30' of https://gitlab.com/thuth/qemu: (23 commits)
tests/avocado/migration: Get find_free_port() from the ports
tests/qtest/ac97-test: Correct reference to driver
gitlab-ci: Only use one process in Windows jobs for compilation
docs/devel/testing: fix minor typo
tests/avocado: Fix trivial typo
tests/avocado: Do not run tests that require libslirp if it is not available
tests/vm: Add libslirp to the VM tests
tests/qtest: prom-env-test: Use double quotes to pass the prom-env option
tests/qtest: npcm7xx_emc-test: Skip running test_{tx, rx} on win32
tests/qtest: machine-none-test: Use double quotes to pass the cpu option
tests/qtest: device-plug-test: Reverse the usage of double/single quotes
tests/qtest: libqos: Rename malloc.h to libqos-malloc.h
tests/qtest: libqos: Drop inclusion of <sys/wait.h>
tests/qtest: migration-test: Skip running test_migrate_fd_proto on win32
tests/qtest: i440fx-test: Skip running request_{bios, pflash} for win32
tests/qtest: Build cases that use memory-backend-file for posix only
tests/qtest: Build e1000e-test for posix only
tests/qtest: Adapt {m48t59,rtc}-test cases for win32
backends/tpm: Exclude headers and macros that don't exist on win32
tests/qtest: migration-test: Handle link() for win32
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
In pegasos2 section move imply before select to match other sections.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <4d46dde64c2e5df6db3f92426fb3ae885939c2b0.1660746880.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Now that shared PPC4xx devices are separated from PPC405 ones we can
drop this depencency.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <cf6c1d280f830beeea41128595c8c026d5126d2b.1660762465.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
These are only used by the board code so move out from the shared SoC
model and put it in the boards file.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <2b23bcaaf191f96b217cbd06a6038694024862c3.1660746880.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Having an explicit I2C model object will help if one day we want to
add I2C devices on the bus from the machine init routine.
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
[balaton: Symplify sysbus device casts for readibility]
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <68eb8b5ac408ca8cc981ebf53a3e154c0d34c7f6.1660746880.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Make ppc-uic a subclass of ppc4xx-dcr-device which will handle the cpu
link and make it uniform with the other PPC4xx devices.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <eb548130cf60aea8a6ea4dba4dee1686b3cabc3d.1660746880.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This device is shared between different 4xx socs.
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <63d9b14c8ff5f73e35bffca1036394b5235735ee.1660746880.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
