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| author | Gabe Black <gabeblack@google.com> | 2019-08-28 02:53:31 -0700 |
|---|---|---|
| committer | Gabe Black <gabeblack@google.com> | 2019-10-01 22:09:06 +0000 |
| commit | 6c9f86e7e3dc1983e556d4f0db135118a91afa34 (patch) | |
| tree | 9a063fe93c7f235a655e92db49ba06469acecc04 /src/arch/arm/fastmodel/iris/cpu.cc | |
| parent | 0c6afe0d0ab22221911619cd5eef3589e0e04e08 (diff) | |
| download | gem5-6c9f86e7e3dc1983e556d4f0db135118a91afa34.tar.xz | |
fastmodel: Add a gem5Cpu attribute to the CortexA76x1.
This attribute is to let the fast model EVS CPU find and talk to the
gem5 CPU in case it needs a pointer to one of its ThreadContexts for
instance.
Also move the code that finds the clock period attribute/event to the
constructor. gem5 guarantees that the EVS is constructed before its
pointer is passed to the iris CPU wrapper, and so the EVS will have
had a chance to install those controls if it's going to.
Change-Id: I389ef0ba0f9d528140f40444baa5091a9ec338cd
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/21045
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Diffstat (limited to 'src/arch/arm/fastmodel/iris/cpu.cc')
| -rw-r--r-- | src/arch/arm/fastmodel/iris/cpu.cc | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/arch/arm/fastmodel/iris/cpu.cc b/src/arch/arm/fastmodel/iris/cpu.cc index 67de40e6f..234a1ca0d 100644 --- a/src/arch/arm/fastmodel/iris/cpu.cc +++ b/src/arch/arm/fastmodel/iris/cpu.cc @@ -34,6 +34,35 @@ namespace Iris { +BaseCPU::BaseCPU(BaseCPUParams *params, sc_core::sc_module *_evs) : + ::BaseCPU::BaseCPU(params), evs(_evs), + clockEvent(nullptr), periodAttribute(nullptr) +{ + sc_core::sc_attr_base *base; + + base = evs->get_attribute(Gem5CpuAttributeName); + auto *gem5_cpu_attr = + dynamic_cast<sc_core::sc_attribute<::BaseCPU *> *>(base); + panic_if(base && !gem5_cpu_attr, + "The EVS gem5 CPU attribute was not of type " + "sc_attribute<::BaesCPU *>."); + if (gem5_cpu_attr) + gem5_cpu_attr->value = this; + + const auto &event_vec = evs->get_child_events(); + auto event_it = std::find_if(event_vec.begin(), event_vec.end(), + [](const sc_core::sc_event *e) -> bool { + return e->basename() == ClockEventName; }); + if (event_it != event_vec.end()) + clockEvent = *event_it; + + base = evs->get_attribute(PeriodAttributeName); + periodAttribute = dynamic_cast<sc_core::sc_attribute<Tick> *>(base); + panic_if(base && !periodAttribute, + "The EVS clock period attribute is not of type " + "sc_attribute<Tick>."); +} + BaseCPU::~BaseCPU() { for (auto &tc: threadContexts) |