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If a thread self suspends, it should be marked as ready after resuming.
If a process was already ready when suspended, it should also be
remarked as ready after resuming.
Special care has to be taken in pre-initialization situations so that
processes are put on the right lists, and whether a process is tracked
is already marked as ready.
Change-Id: I15da7d747db591785358d47781297468c5f9fd09
Reviewed-on: https://gem5-review.googlesource.com/c/12445
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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When a process is sensitive to an event finder and that finder is
attached to a port which is bound to multiple interfaces, the process
is supposed to be made sensitive to the event finder function's result
when called on each interface, not just the first one.
Change-Id: I92312e04e60fab7a7ea51c1ed687edabe9768205
Reviewed-on: https://gem5-review.googlesource.com/c/12444
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Processes which are created in end_of_elaboration aren't created with
sc_spawn but still need to figure out if they're dynamic. Rather than
duplicate the check in sc_spawn, this change centralizes it in the
Process class itself.
Change-Id: I763d5a0fa89a72fbc82346b6ce2eed852ee72524
Reviewed-on: https://gem5-review.googlesource.com/c/12443
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Change-Id: Ib5fe3232cfea26df0c3396c583fd80da429cbdd5
Reviewed-on: https://gem5-review.googlesource.com/c/12442
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Their status depends on when sc_spawn is run.
Change-Id: I826adf9d5c905687e705642130ca5ad725ce92af
Reviewed-on: https://gem5-review.googlesource.com/c/12441
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Most had checks, but didn't print any message. throw_it needed a check
as well.
Change-Id: I916c837112f9b27852583f01b3e16a6f53d5e7ca
Reviewed-on: https://gem5-review.googlesource.com/c/12440
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Change-Id: I59b78048849953773b80bb2dac9b834762625331
Reviewed-on: https://gem5-review.googlesource.com/c/12439
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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The process was treated as the parent of the object, but the object
wasn't being installed as a child of the process.
Change-Id: I6710f34734835cbeceb3d33e5e37b6f5897c5e30
Reviewed-on: https://gem5-review.googlesource.com/c/12438
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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If systemc attempts to schedule an event in the past, schedule it for
right now instead. Still preserve the difference between delta and
timed events. This scheme doesn't really make a lot of sense (why not
just disallow scheduling events in the past?) but this will approximate
what I think the correct behavior is. What's probably supposed to
happen is that events in the past are executed from most past to most
present until they catch up with now, and then now advances as normal.
Our approach is simpler, but won't preserve ordering between multiple
events scheduled in the past.
Change-Id: I73c1e581c532530178458f044674613a4f4ea3be
Reviewed-on: https://gem5-review.googlesource.com/c/12277
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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This is deprecated, but still used in the tests.
Change-Id: I454540e419c53624a37f3d1271cb240415b816b6
Reviewed-on: https://gem5-review.googlesource.com/c/12276
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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There are still some bugs since the output of the tests don't all
match, but more tests pass and fewer abort.
Change-Id: I37f84d65c4a8a43357c98282096e39b9401fc1dd
Reviewed-on: https://gem5-review.googlesource.com/c/12275
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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ArmProcess64 needs to query AArch64 ID registers to check which hw
capability is going to report in the appropriate aux vector's entry.
Change-Id: I1e1294b831e902226f9b162f25e841e53b940454
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/13164
Reviewed-by: Brandon Potter <Brandon.Potter@amd.com>
Maintainer: Brandon Potter <Brandon.Potter@amd.com>
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AArch32 and AArch64 have different HWCAP flags in Linux, but we are
currently using AArch32 HWCAP flags to initialize the aux vector of both
AArch32 and AArch64 binaries.
This patch also fixes a bug that was introduced by running in SE mode a
target binary compiled with glibc > 2.18. Using AArch32 flags
resulted on CPUID flag being set for AArch64. This incorrectly tells
libc that emulation of the midr_el1 is supported.
In FullSystem this might work, but since we are in Syscall Emulation
there is no OS behind emulating the mrs midr_el1 instruction.
By separating AArch32 flags from AArch64 flags we are turning off the
CPUID hwcap flag in SE mode.
Change-Id: I9f651957ba9d19dc2bc06606de070c6586f0f9fa
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/12884
Reviewed-by: Brandon Potter <Brandon.Potter@amd.com>
Maintainer: Brandon Potter <Brandon.Potter@amd.com>
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This changeset adds support for FP/SIMD instructions with
half-precision floating-point operands.
Change-Id: I4957f111c9c5e5d6a3747fe9d169d394d642fee8
Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/13084
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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Change-Id: Iba01ae60e10703877eae299ba924fa1f04a4a387
Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/13104
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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This changeset:
- extends fplib to support emulation of half-precision floating-point
(FP16) operations;
- extends fplib to support additional primitives introduced by the Arm
Scalable Vector Extension (SVE) (fplibExpa, fplibScale,
fplibTrigMAdd, fplibTrigSMul, fplibTrigSSel);
- adds the FZ16 bit to FPSCR;
- cleans up fplib code by replacing constants with preprocessor macros
and by adding inline functions to recognise NaNs and infinities.
Change-Id: If8fdb2a5824b478c8310bbc126ec60cc1105f135
Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/13044
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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This patch is implementing the following AArch64 ID registers as
bitunions, so that it is easier to query for feature availability:
- ID_AA64DFR0_EL1
- ID_AA64ISAR0_EL1
- ID_AA64ISAR1_EL1
- ID_AA64MMFR1_EL1
- ID_AA64MMFR2_EL1
- ID_AA64PFR0_EL1
They are updated to the latest Armv8.5 arch release version.
RES0 only ID registers like ID_AA64AFR1_EL1 haven't been added.
Change-Id: Ied037abe3757421bcfc2834d397a8cf9a2b9f0a7
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/13067
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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This patch implements AArch64 Memory Model Feature Register 2
(from ARMv8.2)
Change-Id: I16d9acaf620fac6d1206e208bd143daec1657daf
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/13066
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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As the number of MiscRegs increases there is the need of a cleaner
header file; this patch is separating miscreg.[cc,hh] where the miscreg
decoding/utility functions are defined/declared from the MiscReg
register types (BitUnion).
Change-Id: I815f53b117b50e47f93aa13d78356ef09d2a2541
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/13065
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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One of the auxv vector's flag is the HWCAP, whose bits match the content
of several arm ID registers. This patch factors out AArch64 ID
registers init into a separate method and creates the symmetric AArch32
ID register init as well, so that we get a meaningful auxiliary vector
in SE mode.
Change-Id: I52bdb31b67508c4447558ebd7ca743733a69280e
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/13064
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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Change-Id: If8ec5f5f49e99d4989658273723b943dd8df84c6
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/13144
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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Change-Id: Iafaf26344a26eade60c08dd2c0d716af14d9b328
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/12948
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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GICv2 is signaling IRQs only to the CPU. This patch is adding the
capability of scheduling FIQs.
Change-Id: I395afc83eb8d58cfd32cd93372bcb6f804364ef5
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/12947
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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This patch is implementing GICD_IGROUPR register.
Change-Id: I1626f61fbf7deec9c81d8d2c135f1d6c0c4eb891
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/12946
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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Read/WriteCpu methods in the GICv2 are accessing the GICC_CTRL register
as if writing any non-zero value to the register will enable IRQ
signaling to the CPU. Instead, only the 2 least significant bits
control group0/group1 enablement. This patch is renaming GICC_CTRL
underlying data buffer from cpuEnabled to cpuControl and it is making it
an array of uint32_t instead of bool. cpuEnabled now becomes a method
and checks if GICC_CTRL.EnableGrp0 or GICC_CTRL.EnableGrp0 are set.
Change-Id: I40f0b3c52c40abd482a856f032bf3686f96ef641
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/12945
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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For level sensitive interrupt IRQ line must be cleared when interrupt is
deasserted. This is not the case for edge-trigerred interrupt.
Change-Id: Ib1660da74a296750c0eb9e20878d4ee64bd23130
Reviewed-on: https://gem5-review.googlesource.com/12944
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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This patch is making it possible to use SERIALIZE_ARRAY and UNSERIALIZE
array for serializing arrays of BitUnions.
Change-Id: I682766b472585f70a89338f373fb94dff5db53c3
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/12924
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Change-Id: I8c4eb9389b47df8cdf1eec966bb2c9da85a7a7c8
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/12744
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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When checking for PPIs to send to the cpu in the PL390 GIC we
were forwarding any pending PPI regardless of their masking
in the distributor.
Change-Id: I2e294abeca733cca95cd0deeb9659c7d3d9d8734
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/12624
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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Writing a 1 to the Overflow Flag Status register should trigger an
interrupt raise/clear depending on the register we are currently using
(PMOVSCLR for clearing and PMOVSSET for raising).
Change-Id: I2091456685a245712045cf7a4932ac36b7dded1d
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/12531
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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644e8cdf5ee7 ("util: Move the m5ops.h file to a shared directory")
added include/ to the include path for m5 Makefiles, based on
$(PWD): $(PWD)/../../include.
Unfortunately, this breaks when using `make -C <path>`, as -C does
not move PWD accordingly. The fix is simply to remove $(PWD), as a
relative path is just fine here.
Change-Id: Ia046c29761363b6670e52c52a604c7e70a6a305a
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Signed-off-by: Ciro Santilli <ciro.santilli@arm.com>
Reviewed-by: Ciro Santilli <ciro.santilli@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/12844
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
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Change-Id: I19475b86d04af5b3e4e907d9e24cb15666fb7bb1
Reviewed-on: https://gem5-review.googlesource.com/12274
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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The various phases assume there are at least some tests, and if there
are none they may try to run malformed commands.
Change-Id: I041d35c504da57b830c490651ab1b3c98e0288ca
Reviewed-on: https://gem5-review.googlesource.com/12273
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Change-Id: I4c902cd81f7e46f81f601cae0ff2da044ef48f85
Reviewed-on: https://gem5-review.googlesource.com/12272
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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The tests expect to be run from a certain directory. Generally that
doesn't matter, but in at least one case the test opens a file with a
relative path, and that doesn't work unless CWD is what it expects.
Change-Id: I34c0ed975e77daed50ace4f7eebd034bf04c5595
Reviewed-on: https://gem5-review.googlesource.com/12271
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Use rpath to link the gem5 dynamic library into the systemc test
binaries so that they don't have to be run from a particular directory
to resolve all their linking dependencies.
Change-Id: I66b18c23ae6bbf32a959022f8789fc8bdd3a6c6b
Reviewed-on: https://gem5-review.googlesource.com/12270
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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When in sc_main, sc_is_running will return true but we're not going
to run any gem5 events since we're currently in the sc_main Fiber. In
that case, we need to do the sc_stop work inline.
If we're actually running and not just paused, then we do still want to
schedule the work of sc_stop to happen as its own event since that will
happen before returning to sc_main, and actually will likely be the
mechanism by which sc_main starts executing again.
Change-Id: If9ffafc4f240af0f3d9c726b36a0950b5219dc00
Reviewed-on: https://gem5-review.googlesource.com/12269
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Make sure we check for starvation after timed notifications and at the
very end of delta cycles (after delta notifications, not before). Also
reverse the order of starvation checks (whether they apply at all, then
if they're satisfied) to make those checks faster. Checking a bool
is a lot easier than checking if a bunch of other structures are
empty.
Change-Id: I514ff219909823f1f424fde69856d6b510655188
Reviewed-on: https://gem5-review.googlesource.com/12268
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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The ready event is what notices that we only wanted to run one delta
cycle, or no delta cycle if there was nothing to do, and return to
sc_main. If the ready event wasn't scheduled, we would advance time
before the ready event ran and returned to sc_main which is incorrect.
Change-Id: Ic3c10a2f1405f744e8c2bd37aa45846ee6e98e12
Reviewed-on: https://gem5-review.googlesource.com/12267
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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If sc_stop is called during one of the various callbacks, that has
defined behavior and will cause the simulation to stop after the
current batch of callbacks. We were checking whether sc_stop had been
called during one of those batches and killing the system, erroneously
assuming that meant it had called during elaboration.
This change moves the check to before the callbacks which actually
does mean that sc_stop was called during elaboration.
Change-Id: I6876305450e52a407acffb9a2f45ee2ae24a9adf
Reviewed-on: https://gem5-review.googlesource.com/12266
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Methods may need to yield control to other Processes when throwing
them exceptions. In that case, we need to keep track of the fact that
the method doesn't need to be restarted when it resumes within yield.
Change-Id: I829c387d6ddb563b2957db47e55adadbbe6bc51a
Reviewed-on: https://gem5-review.googlesource.com/12265
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Don't just fall off the end of the fiber and return to gem5. By
calling yield, we ensure that remaining Processes are run and that
bookkeeping is maintained correctly.
Change-Id: Ifbe104e155cad29e40a89767a7c1f986399f784d
Reviewed-on: https://gem5-review.googlesource.com/12264
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Change-Id: Ifbcd7e4148b82b9bf5241e040e812925daea3705
Reviewed-on: https://gem5-review.googlesource.com/12263
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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The sc_port code had been using the .at() function of the vector class,
but when that failed it threw an exception, and it was very difficult
to tell where the exception came from from how gem5 crashed. This
change switches to sc_assert (the systemc version of assert) which
makes the cause/location of failures much more obvious.
Change-Id: I1cd51c86f47b314be551c304b014c44cfa030175
Reviewed-on: https://gem5-review.googlesource.com/12262
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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Change-Id: Id615856af7ea366e499747e00f66924a25623663
Reviewed-on: https://gem5-review.googlesource.com/12261
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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This takes advantage of the utility functions that exist a little
better, and also avoids accidentally asymetrically using
eventsToSchedule and eq->(de)schedule.
Change-Id: I1eb1c228d47684cccb9deaf6f3409b77cfbad4cd
Reviewed-on: https://gem5-review.googlesource.com/12260
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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This change puts sc_process_b into the inheritance hierarchy for the
Process types. It also adds the nonstandard sc_set_location function
and calls it from the nonstandard WAIT* macros.
Change-Id: Ic997dcf74d262774dd7b53504146e372e03af2e0
Reviewed-on: https://gem5-review.googlesource.com/12259
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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If the simulation isn't running, these should be replaced with versions
generated by sc_gen_unique_name().
Change-Id: Idd515e73ba17d3dfa866ee5509369e9c4e3fb2f5
Reviewed-on: https://gem5-review.googlesource.com/12258
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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A null pointer for an sc_object name is supposed to be equivalent to
an empty string.
Change-Id: I6094577ad43f13d47a20bc67fa15f4c04d448fe5
Reviewed-on: https://gem5-review.googlesource.com/12257
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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A regression tests checks this situation.
Change-Id: I7716bf7c8cf219c372ab9722fc0ad52e7e674b17
Reviewed-on: https://gem5-review.googlesource.com/12256
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
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