The function had only one caller. Canonicalize the cpu_cond
test to TCG_COND_NE, the "natural" sense of its value.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Do this here instead of in each caller.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This will allow the condition to live across changes to
the global cc variables.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We don't require c2 to be variable, so emphasize that.
We don't currently require c2 to be non-zero, but that will change.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Since we're going to feed cpu_cond to another comparison, we don't
reqire a boolean value -- anything non-zero is sufficient.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
All instructions have been converted to generate
full condition codes explicitly.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These are all related and implementable with common code.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These are all related and implementable with common code.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Return both result and overflow from helper_[us]div.
Compute all flags explicitly in gen_op_[us]divcc.
Marginally improve the INT64_MIN special case in helper_sdiv.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Step in removing CC_OP: change the representation of CC_OP_FLAGS.
The 8 bits are distributed between 6 variables, which should make
it easy to keep up to date.
The code within cc_helper.c is quite ugly but is only temporary.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Isolate linux-user from changes to icc representation.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
In a two-stage translation, the result of the BTI guarded bit should
be the guarded bit from the first stage of translation, as there is
no BTI guard information in stage two. Our code tried to do this,
but got it wrong, because we currently have two fields where the GP
bit information might live (ARMCacheAttrs::guarded and
CPUTLBEntryFull::extra::arm::guarded), and we were storing the GP bit
in the latter during the stage 1 walk but trying to copy the former
in combine_cacheattrs().
Remove the duplicated storage, and always use the field in
CPUTLBEntryFull; correctly propagate the stage 1 value to the output
in get_phys_addr_twostage().
Note for stable backports: in v8.0 and earlier the field is named
result->f.guarded, not result->f.extra.arm.guarded.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1950
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231031173723.26582-1-peter.maydell@linaro.org
The previous change missed updating one of the increments and
one of the MemOps. Add a test case for all vector lengths.
Cc: qemu-stable@nongnu.org
Fixes: e6dd5e782b ("target/arm: Use tcg_gen_qemu_{ld, st}_i128 in gen_sve_{ld, st}r")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20231031143215.29764-1-richard.henderson@linaro.org
[PMM: fixed checkpatch nit]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Most of the registers used by the FEAT_MOPS instructions cannot use
31 as a register field value; this is CONSTRAINED UNPREDICTABLE to
NOP or UNDEF (we UNDEF). However, it is permitted for the "source
value" register for the memset insns SET* to be 31, which (as usual
for most data-processing insns) means it should be the zero register
XZR. We forgot to handle this case, with the effect that trying to
set memory to zero with a "SET* Xd, Xn, XZR" sets the memory to
the value that happens to be in the low byte of SP.
Handle XZR when getting the SET* data value from the register file.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20231030174000.3792225-4-peter.maydell@linaro.org
In user-mode emulation, we need to set the SCTLR_EL1.MSCEn
bit to avoid all the FEAT_MOPS insns UNDEFing.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231030174000.3792225-2-peter.maydell@linaro.org
Specifically DIT, LSE2, and MTE3.
We already expose detection of these via the CPUID interface, but
missed these from ELF hwcaps.
Signed-off-by: Marielle Novastrider <marielle@novastrider.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20231029210058.38986-1-marielle@novastrider.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: fixed conflict with feature tests moving to cpu-features.h]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* Correct minor errors in Cortex-A710 definition
* Implement Neoverse N2 CPU model
* Refactor feature test functions out into separate header
* Fix syndrome for FGT traps on ERET
* Remove 'hw/arm/boot.h' includes from various header files
* pxa2xx: Refactoring/cleanup
* Avoid using 'first_cpu' when first ARM CPU is reachable
* misc/led: LED state is set opposite of what is expected
* hw/net/cadence_gen: clean up to use FIELD macros
* hw/net/cadence_gem: perform PHY access on write only
* hw/net/cadence_gem: enforce 32 bits variable size for CRC
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Merge tag 'pull-target-arm-20231027' of https://git-us.linaro.org/people/pmaydell/qemu-arm into staging
target-arm queue:
* Correct minor errors in Cortex-A710 definition
* Implement Neoverse N2 CPU model
* Refactor feature test functions out into separate header
* Fix syndrome for FGT traps on ERET
* Remove 'hw/arm/boot.h' includes from various header files
* pxa2xx: Refactoring/cleanup
* Avoid using 'first_cpu' when first ARM CPU is reachable
* misc/led: LED state is set opposite of what is expected
* hw/net/cadence_gen: clean up to use FIELD macros
* hw/net/cadence_gem: perform PHY access on write only
* hw/net/cadence_gem: enforce 32 bits variable size for CRC
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# gpg: Signature made Fri 27 Oct 2023 23:37:49 JST
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [full]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [full]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [full]
# gpg: aka "Peter Maydell <peter@archaic.org.uk>" [unknown]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* tag 'pull-target-arm-20231027' of https://git-us.linaro.org/people/pmaydell/qemu-arm: (41 commits)
hw/net/cadence_gem: enforce 32 bits variable size for CRC
hw/net/cadence_gem: perform PHY access on write only
hw/net/cadence_gem: use FIELD to describe PHYMNTNC register fields
hw/net/cadence_gem: use FIELD to describe DESCONF6 register fields
hw/net/cadence_gem: use FIELD to describe IRQ register fields
hw/net/cadence_gem: use FIELD to describe [TX|RX]STATUS register fields
hw/net/cadence_gem: use FIELD to describe DMACFG register fields
hw/net/cadence_gem: use FIELD to describe NWCFG register fields
hw/net/cadence_gem: use FIELD to describe NWCTRL register fields
hw/net/cadence_gem: use FIELD for screening registers
hw/net/cadence_gem: use REG32 macro for register definitions
misc/led: LED state is set opposite of what is expected
hw/arm: Avoid using 'first_cpu' when first ARM CPU is reachable
hw/arm/pxa2xx: Realize PXA2XX_I2C device before accessing it
hw/intc/pxa2xx: Factor pxa2xx_pic_realize() out of pxa2xx_pic_init()
hw/intc/pxa2xx: Pass CPU reference using QOM link property
hw/intc/pxa2xx: Convert to Resettable interface
hw/pcmcia/pxa2xx: Inline pxa2xx_pcmcia_init()
hw/pcmcia/pxa2xx: Do not open-code sysbus_create_simple()
hw/pcmcia/pxa2xx: Realize sysbus device before accessing it
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
In commit 442c9d682c when we converted the ERET, ERETAA, ERETAB
instructions to decodetree, the conversion accidentally lost the
correct setting of the syndrome register when taking a trap because
of the FEAT_FGT HFGITR_EL1.ERET bit. Instead of reporting a correct
full syndrome value with the EC and IL bits, we only reported the low
two bits of the syndrome, because the call to syn_erettrap() got
dropped.
Fix the syndrome values for these traps by reinstating the
syn_erettrap() calls.
Fixes: 442c9d682c ("target/arm: Convert ERET, ERETAA, ERETAB to decodetree")
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231024172438.2990945-1-peter.maydell@linaro.org
Move all the ID_AA64DFR* feature test functions together.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231024163510.2972081-7-peter.maydell@linaro.org
Move all the ID_AA64PFR* feature test functions together.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231024163510.2972081-6-peter.maydell@linaro.org
Move the feature test functions that test ID_AA64ISAR* fields
together.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231024163510.2972081-5-peter.maydell@linaro.org
Move the ID_AA64MMFR0 feature test functions up so they are
before the ones for ID_AA64MMFR1 and ID_AA64MMFR2.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231024163510.2972081-4-peter.maydell@linaro.org
Our list of isar_feature functions is not in any particular order,
but tests on fields of the same ID register tend to be grouped
together. A few functions that are tests of fields in ID_AA64MMFR1
and ID_AA64MMFR2 are not in the same place as the rest; move them
into their groups.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231024163510.2972081-3-peter.maydell@linaro.org
The feature test functions isar_feature_*() now take up nearly
a thousand lines in target/arm/cpu.h. This header file is included
by a lot of source files, most of which don't need these functions.
Move the feature test functions to their own header file.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231024163510.2972081-2-peter.maydell@linaro.org
Implement a model of the Neoverse N2 CPU. This is an Armv9.0-A
processor very similar to the Cortex-A710. The differences are:
* no FEAT_EVT
* FEAT_DGH (data gathering hint)
* FEAT_NV (not yet implemented in QEMU)
* Statistical Profiling Extension (not implemented in QEMU)
* 48 bit physical address range, not 40
* CTR_EL0.DIC = 1 (no explicit icache cleaning needed)
* PMCR_EL0.N = 6 (always 6 PMU counters, not 20)
Because it has 48-bit physical address support, we can use
this CPU in the sbsa-ref board as well as the virt board.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20230915185453.1871167-3-peter.maydell@linaro.org
Correct a couple of minor errors in the Cortex-A710 definition:
* ID_AA64DFR0_EL1.DebugVer is 9 (indicating Armv8.4 debug architecture)
* ID_AA64ISAR1_EL1.APA is 5 (indicating more PAuth support)
* there is an IMPDEF CPUCFR_EL1, like that on the Neoverse-N1
Fixes: e3d45c0a89 ("target/arm: Implement cortex-a710")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20230915185453.1871167-2-peter.maydell@linaro.org
This was introduced in KVM in Linux 2.6.33, we can require it
unconditionally. KVM_CLOCK_TSC_STABLE was only added in Linux 4.9,
for now do not require it (though it would allow the removal of some
pretty yucky code).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This was introduced in KVM in Linux 2.6.36, and could already be used at
the time to save/restore FPU data even on older processor. We can require
it unconditionally and stop using KVM_GET/SET_FPU.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM_IRQFD was introduced in Linux 2.6.32, and since then it has always been
available on architectures that support an in-kernel interrupt controller.
We can require it unconditionally.
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This was introduced in KVM in Linux 3.5, we can require it unconditionally
in kvm_irqchip_send_msi(). However, not all architectures have to implement
it so check it only in x86, the only architecture that ever had MSI injection
but not KVM_CAP_SIGNAL_MSI.
ARM uses it to detect the presence of the ITS emulation in the kernel,
introduced in Linux 4.8. Assume that it's there and possibly fail when
realizing the arm-its-kvm device.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
PAE mode in x86 supports 36 bit address space. Check the PAE CPUID on the
guest processor and set phys_bits to 36 if PAE feature is set. This is in
addition to checking the presence of PSE36 CPUID feature for setting 36 bit
phys_bits.
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-ID: <20230912120650.371781-1-anisinha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Instructions in VEX exception class 6 generally look at the value of
VEX.W. Note that the manual places some instructions incorrectly in
class 4, for example VPERMQ which has no non-VEX encoding and no legacy
SSE analogue. AMD does a mess of its own, as documented in the comment
that this patch adds.
Most of them are checked for VEX.W=0, and are listed in the manual
(though with an omission) in table 2-16; VPERMQ and VPERMPD check for
VEX.W=1, which is only listed in the instruction description. Others,
such as VPSRLV, VPSLLV and the FMA3 instructions, use VEX.W to switch
between a 32-bit and 64-bit operation.
Fix more of the class 4/class 6 mismatches, and implement the check for
VEX.W in TCG.
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In preparation for adding more similar checks, move the VEX.L=0 check
and several X86_SPECIAL_* checks to a new field, where each bit represent
a common check on unused bits, or a restriction on the processor mode.
Likewise, many SVM intercepts can be checked during the decoding phase,
the main exception being the selective CR0 write, MSR and IOIO intercepts.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The implementation was validated with OpenSSL and with the test vectors in
https://github.com/rust-lang/stdarch/blob/master/crates/core_arch/src/x86/sha.rs.
The instructions provide a ~25% improvement on hashing a 64 MiB file:
runtime goes down from 1.8 seconds to 1.4 seconds; instruction count on
the host goes down from 5.8 billion to 4.8 billion with slightly better
IPC too. Good job Intel. ;)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
All instructions are now converted.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
