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This isn't used by anything any more. The func field is left in place
to ensure compatability, but there's no reason to decode a value
nobody is going to use.
Jira Issue: https://gem5.atlassian.net/browse/GEM5-187
Change-Id: I85fcd0e4a362551c29af6bff350d99af86050415
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23179
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Right now, there are only two places which call the pseudoInst function
directly, the ARM KVM CPU and the generic mmapped IPR. These two
callers currently use the generic "PseudoInstABI" which is just a
wrapper around the existing getArgument function.
In the future, this getArgument function will be disolved, and the
PseudoInstABI will be defined for each ABI. Since it currently mimics
the Linux ABI since gem5 can only handle one ABI at a time right now,
this implementation will probably be shared by linux system calls,
except that the pseudo inst implementation will eat return values since
those are returned through other means when the pseudo inst is based on
magic address ranges.
Jira Issue: https://gem5.atlassian.net/browse/GEM5-187
Change-Id: Ied97e4a968795158873e492289a1058c8e4e411b
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23178
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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This patch adds an option to "ArmSemihosting" which allows for
specifying an optional search path for host files.
Previously, behaviour was fixed to search in the directory from where
the gem5 binary was run from.
Change-Id: I57b932b38d022f132af78857104633d7bfdd1442
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23903
Reviewed-by: Ciro Santilli <ciro.santilli@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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This changes fixes two compilation errors when compiling with
FastModels. One is that CurrentMsn should be Iris::CurrentMsn and the
other is that currEL() function needs arch/arm/utility.hh header file.
Test by compiling GEM5 with FastModels:
scons -j64 build/ARM/gem5.opt \
USE_ARM_FASTMODEL=1 \
PVLIB_HOME=... \
MAXCORE_HOME=... \
ARMLMD_LICENSE_FILE=... \
Change-Id: Iabe0a5f25246591f99b57219428b8f87ecd3363c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23924
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
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Now that the IRIS thread context can be specific to ARM, some things
which had been pushed to a different level of abstraction can be mvoed
back. This will hopefully allow more code sharing in the future when
other types of CPUs are supported.
Change-Id: Ic3a5f0db53ebe93e18f7507ed71812bce27b6d01
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23788
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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This specialization will correspond specifically with the CortexA76,
instead of specializing the ThreadContext for ARM in general. Some
aspects of this class may need to move into the base IRIS thread
context class, but I'll leave that for a later change.
Change-Id: I9cbe527d36e6fda78601dc39c1963370cfa28b16
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23787
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Fast models are in practice only ARM, so it's not that helpful to have
the ARM-ness factored out. It is, however, helpful to have aspects
which control how gem5 concepts like registers are mapped to fast model
concepts like resources, especially since these mappings may vary from
fast model to fast model.
For instance, it looks like the CortexA76 does not have predicate
vector registers. Rather than make all fast models support or not
support those registers, that can be done on a model by model basis.
Change-Id: I195da4a2f4d2f8593032d0d63e9fd3d20a240d01
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23786
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
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The generic thread context checkpointing code can be used which calls
into the ThreadContext methods to read the required state.
Change-Id: Ib5c318ff4d2e756274b4c90b56533b2689a837f2
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23785
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
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These registers don't have an architectural equivalent, but they may
need to be accessed by generic code, for instance the code that
checkpoints a thread context.
Change-Id: I4a18f44f2c09e379a4629c8e3eb8070b5c01918e
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23784
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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This just calls readVecReg after constructing a RegId.
Change-Id: Ia26b9bb874fec62f98bd5e4d3c6aa1059766c2f6
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23783
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
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This was hardcoded as 5, but should be determined based on the memory
space IDs the fast model returns. What we do now is have a specific
override for ARM (perhaps conceptually the A76) which looks for an
address space called "Current" which seems to work well.
It's possible that the appropriate address space for a different model
might have a different number, or even a different name. This may need
to be further specialized/parameterized in those cases.
Change-Id: Ie1ef99675fd9bccab50b7fc7add16b82a93bd60b
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22143
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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These use the IRIS breakpoint API to stop the models at the appropriate
points. There seems to be a slightly wonky interaction between
breakpoints and stepping, where if you stop at a breakpoint and then
step, you might end up moving forward more than the number of requested
instructions.
Change-Id: I31f13a120cfc1ad2ec3669ee8befd6d21b328bb2
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22122
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Fix some warnings reported by clang.
* missing override in {freebsd,linux}/process.hh
Change-Id: I67c36a0785ac90614211d640fd58d3ffe187c17e
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23863
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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First-faulting loads do allow Rm == 0x1f.
Change-Id: Ib9bcb55e126653813fdbb7c29970af23a2471ebb
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23803
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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SYS_FLEN was incorrectly handled as SYS_ISTTY. This patch fixes this
behaviour.
Change-Id: I66e0b97d8b44d2cb78e0b1bb940fd6f4b52c658f
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23752
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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This patch adds Armv8.4-SecEL2 checking. Helpers implementing
EL2Enabled, IsSecureEL2Enabled and HaveSecureEL2Ext following
the architecture pseudocode are provided. These are intended
to be used for checking register access permissions.
Change-Id: I3d06d0127cf165c1eeaf3302830742d610cef719
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23766
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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This patch generalises trap checking when accessing system registers
in AArch64. Depending on the accessed register, a different Exception
Class (EC) and immediate value may be set.
Previously this only took SIMD traps into account.
Change-Id: I30717676a210c770531e39e4c6a6e1fbfdfdc583
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23765
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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The granularity bit should be set since the segment limit should be
interpreted as a number of pages, not bytes.
A comment indicates that NX support is enabled, but the bit wasn't
being set. That's now set to be consistent with FS mode.
The SVME bit is now turned off, since Intel CPUs don't have SVME, and
enabling it apparently makes them upset.
Also disable CR4 bits which enable features neither gem5 nor apparently
my workstation support.
Change-Id: I72d5a07871dede8763b0dd188a52fe5eb6bde6ea
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23361
Reviewed-by: Ayaz Akram <yazakram@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Change-Id: I000e7809a2c8850eb31e5615caf1d88b537fea8d
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22121
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Chun-Chen TK Hsu <chunchenhsu@google.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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This plumbing is simple and largely copied from other implementations
within gem5. This mechanism should be refactored so that the
duplication is unnecessary.
Change-Id: Ibcdf759b7fba1d574e8e2ba04249afdd92c6560c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22120
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Chun-Chen TK Hsu <chunchenhsu@google.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Change-Id: I806dc8cdacce57e6ec31d2421b9e6b9733c7da02
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22119
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
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This will be used by the TLB to do the actual translation.
Unfortunately there isn't a great way to tell what translation type to
use, so we just go through all of them for now. The ARM subclass might
specialize and figure out which address spaces to use based on control
register state.
Change-Id: Id1fcad66554acf9d69af683917b3c2834f825da0
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22118
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Change-Id: I06a7d7db95ec1ce65945c9e09f812f0b69aaa8e6
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23643
Reviewed-by: Gabe Black <gabeblack@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Gabe Black <gabeblack@google.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Some compilers will produce a warning when using an uninitialized
memData.
JIRA: https://gem5.atlassian.net/browse/GEM5-196
Change-Id: I19e197b15729a03da546a0188917a9b3e7bf31b7
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23525
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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This behaviour will be forbidden in following patches.
Instead, create an all true vector.
JIRA: https://gem5.atlassian.net/browse/GEM5-196
Change-Id: I61d2852610281f2d7c7a669dcb4d2728be194f52
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23524
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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The x86 version doesn't do anything x86 specific, and so can be used
generically in sim/pseudo_inst.(hh|cc)
Jira Issue: https://gem5.atlassian.net/browse/GEM5-187
Change-Id: I46c2a7d326bd7a95daa8611888051c180e92e446
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23177
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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The logic that determines which syscall to call was built into the
implementation of faults/exceptions or even into the instruction
decoder, but that logic can depend on what OS is being used, and
sometimes even what version, for example 32bit vs. 64bit.
This change pushes that logic up into the Process objects since those
already handle a lot of the aspects of emulating the guest OS. Instead,
the ISA or fault implementations just notify the rest of the system
that a nebulous syscall has happened, and that gets propogated upward
until the process does something with it. That's very analogous to how
a system call would work on a real machine.
When a system call happens, the low level component which detects that
should call tc->syscall(&fault), where tc is the relevant thread (or
execution) context, and fault is a Fault which can ultimately be set
by the system call implementation.
The TC implementor (probably a CPU) will then have a chance to do
whatever it needs to to handle a system call. Currently only O3 does
anything special here. That implementor will end up calling the
Process's syscall() method.
Once in Process::syscall, the process object will use it's contextual
knowledge to determine what system call is being requested. It then
calls Process::doSyscall with the right syscall number, where doSyscall
centralizes the common mechanism for actually retrieving and calling
into the system call implementation.
Jira Issue: https://gem5.atlassian.net/browse/GEM5-187
Change-Id: I937ec1ef0576142c2a182ff33ca508d77ad0e7a1
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23176
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Brandon Potter <Brandon.Potter@amd.com>
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The system call stub KVM uses in SE mode to call the system call
pseudo instruction which ultimately calls m5Syscall already uses
sysret, and the implementation of sysret clears both the RF and VM bits
itself. There's no reason to do that again explicitly here.
Jira Issue: https://gem5.atlassian.net/browse/GEM5-187
Change-Id: Id7b5417564e3f3492ba6efb8ed36fab2f4c38e09
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23175
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Setting syscall args isn't really something we need to do in gem5,
since that will be taken care of by the code actually calling the
syscall. We just need to be able to retrieve the value it put there.
Jira Issue: https://gem5.atlassian.net/browse/GEM5-187
Change-Id: I0bb6d5d0207a7892414a722b3788cb70ee509582
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23174
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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In Alpha and MIPS, the argc and argv values should be in what happens
to be the first and second syscall argument registers, but that's not
by definition. The process objects of both those ISAs know what
registers to use intrinsically, so there's also no reason to call out
to a helper method which acts as a part of the Process's interface to
the rest of gem5.
Jira Issue: https://gem5.atlassian.net/browse/GEM5-187
Change-Id: Id8fa38ab1fc2ac6436e94ad41303439973fded10
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23173
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Jira Issue: https://gem5.atlassian.net/browse/GEM5-187
Change-Id: I9bbffcc74ec4f3df4effa5c50f0a4a688c5b6016
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23169
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Sometimes NumFloatV7ArchRegs is used to specify the maximum number of
AArch32 floating point registers. Sometimes it is just used for indexing
a free register storage to be used by microcode. In that scenario,
VecSpecialElem should be used, which is a index to the first available
non architectural register for floating point.
Change-Id: I4e84740701f0e7041cf1acad2afed471361c423a
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23107
Tested-by: kokoro <noreply+kokoro@google.com>
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The generic VLdmStm class (modelling A32 VLDM/VSTM) is handling a wrong
register list in a inconsistent way. Some instructions are opting
for being decoded as Unknown, while others handle it inside the
macro instruction constructor by manually adjusting the reglist.
Those are two valid implementation of the CONSTRAINT UNPREDICTABLE
behaviour (1 and 3):
"If regs > 16 || (d+regs) > 32 , then one of the following behaviors must
occur:
1) The instruction is UNDEFINED .
2) The instruction executes as NOP .
3) One or more of the SIMD and floating-point registers are UNKNOWN . If
the instruction specifies writeback, the base register becomes UNKNOWN .
This behavior does not affect any general-purpose registers."
This patch unfies the behaviour by always opting for option 1) over 3)
Change-Id: I4f98409243d5a2ec64113fe9c87e961a391abe94
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Ciro Santilli <ciro.santilli@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23106
Tested-by: kokoro <noreply+kokoro@google.com>
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In armv7 there are 16 only quadword (vector) registers which are usable
by SIMD instructions (Q0-Q15). Those completely overlap with the 32
double word registers (D0-D31).
NumVecV7ArchRegs = 16; // Q0-Q15
Change-Id: Id8fee1064d60dcfa54f273fa7d579a20c0087835
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23105
Tested-by: kokoro <noreply+kokoro@google.com>
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This is putting some order in the constants definition, respecting
the description which divides:
* Constants Related to the number of registers
(example: const int NumFloatRegs = 0)
from:
* Semantically meaningful register indices (to indicate special
registers)
(example: const int INTRLVREG0 = NumVecV8ArchRegs + NumVecSpecialRegs)
Change-Id: I1760b7f786b6f6becbe8ab445e65fc3fa17206cb
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23104
Tested-by: kokoro <noreply+kokoro@google.com>
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gem5-ARM is not using floatRegs anymore and moved towards the
vecRegs register file (which is used for SIMD&FP + SVE instructions)
Change-Id: I41cfbe10565e4e0db838f98626310a5b14edadb9
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23103
Tested-by: kokoro <noreply+kokoro@google.com>
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In an earlier patch, the FCSR was split into its two components, FRM and
FFLAGS, causing explicit writes to FCSR to incur two CSR writes. With
the O3 CPU model, which defers them both to later, this creates a bug
where an assertion that the number of CSR writes must be less than
MaxMiscDestRegs fails because that constant is 1. This patch sets it to
2 so the O3 CPU is compatible with this scheme.
Change-Id: Ic3413738c4eebe9f127980d0d0af5033d18468e7
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23220
Reviewed-by: Alec Roelke <alec.roelke@gmail.com>
Maintainer: Alec Roelke <alec.roelke@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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The exact mapping of the KVM registers and the gem5 registers is direct and
may not actually be correct.
Change-Id: Idb0981105c002e65755f8dfc315dbb95ea9370df
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23402
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Change-Id: I5a6db4632ec5b670cbfeb7d52190a7545c0b985f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23380
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Tested with simple c binaries.
Signed-off-by: marjanfariborz <mfariborz@ucdavis.edu>
Change-Id: I2f0852b136f966381d29af523e8ffdbca795afcd
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23262
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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When the syscall signature was changed to not take a Process pointer,
the prototype for getresuidFunc was not updated.
Change-Id: I887cc3e3aa8483fc608df9963876a0ac6fa2251d
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23320
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Endianness transformation was moved from the CPU into this method,
making the "inst" parameter guest endian instead of host endian. The
emi member of the decoder was set using the betoh method, ensuring that
it was still stored in host order. Unfortunately, the "inst" parameter
was used in some places when setting up the rest of emi.
This change replaces those uses of inst with emi.
Change-Id: I0c7f9a1833db4b64fc1a5015cf10f6ba3f7c26a0
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23163
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Clang can handle both, and GCC throws a fit if it sees pragmas for
clang.
Change-Id: Ie9f2789f45706223b11ed5acdf8b371de6e7ee24
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23321
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Use them in place of messing with termcap directly.
Change-Id: I093efa95e6b6ea7af198dc1395dce05ca6d6575f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23263
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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This header comes from the fast model distribution and so we can't
(easily) disable the warning locally.
Change-Id: I2c1eee48f8970bb17466f0759f0077a5d45e76af
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23123
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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For compressed instruction c.lui, the 6-bit immediate is left-shifted by 12
bits in decoding. While the original Gem5 gives the left-shifted value
directly in disassembly.
This patch fixes the problem by adding a new template CILuiExecute to
resume the immediate before outputting it in disassembly.
Note: The immediate is sign-extended to 20-bit to be compatible with GCC.
Change-Id: If73f72d3e8f85a8b10ce7a323379d8ad6c4c3085
Signed-off-by: Ian Jiang <ianjiang.ict@gmail.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22567
Reviewed-by: Alec Roelke <alec.roelke@gmail.com>
Maintainer: Alec Roelke <alec.roelke@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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The methods which set or get an attribute from the virtual GIC use a
shift constant which is 32, but they store their result in a 32 bit
variable and, according to clang, are used to shift 32 bit inputs. This
is undefined behavior in terms of the shift, and will truncate off the
value regardless.
Change-Id: Ie9543ab9e6e1d5f86317a9210d220928b23ffaf8
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23129
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Ciro Santilli <ciro.santilli@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
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This will make parsing more robust, considering the tarmac
format changes between AA32 and AA64.
Change-Id: I0e4905d70e2e494104706a4c6c75b8169deaecf9
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22845
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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The "shamt" in integer shift immediate instructions is an unsigned
immediate encoded in bits[25:20]. While the original Gem5 uses bits[31:20]
as an int64_t. This patch fixes the problem by:
- Adding a new parameter "imm_code" for format IOp and use the correct
bitfields SHAMT5 or SHAMT6 to assign "imm_code" for each instruction.
- Use uint64_t instead of default int64_t to assign parameter "imm_type"
of format IOp.
The instructions affected include:
- Shift Left Logical Immediate, slli
- Shift Right Logical Immediate, srli
- Shift Right Arithmetic Immediate, srai
- Shift Left Logical Word Immediate, slliw
- Shift Right Logical Word Immediate, srliw
- Shift Right Arithmetic Word Immediate, sraiw
Change-Id: Iad34ccd036c11630409f84f6de2b939224e100e6
Signed-off-by: Ian Jiang <ianjiang.ict@gmail.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22563
Reviewed-by: Alec Roelke <alec.roelke@gmail.com>
Maintainer: Alec Roelke <alec.roelke@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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The original Gem5 does not give correct disassembly for instruction fence
and fence.i. This patch fixes the problem by adding two bitfields PRED and
SUCC and a new format FenceOp and a template FenceExecute, in which
operands are generated based on PRED and SUCC in the disassembling
function.
Change-Id: I78dbf125fef86ce40785c498a318ffb1569da46c
Signed-off-by: Ian Jiang <ianjiang.ict@gmail.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22569
Reviewed-by: Alec Roelke <alec.roelke@gmail.com>
Maintainer: Alec Roelke <alec.roelke@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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