9884641603
The components in base/loader were moved into a namespace called Loader. This will make it easier to add loader components with fairly short natural names which don't invite name collisions. gem5 should use namespaces more in general for that reason and to make it easier to write independent components without having to worry about name collisions being added in the future. Unfortunately this namespace has the same name as a class used to load an object file into a process object. These names can be disambiguated because the Process loader is inside the Process scope and the Loader namespace is at global scope, but it's still confusing to read. Fortunately, this shouldn't last for very long since the responsibility for loading Processes is going to move to a fake OS object which will expect to load a particular type of Process, for instance, fake 64 bit x86 linux will load either 32 or 64 bit x86 processes. That means that the capability to feed any binary that matches the current build into gem5 and have gem5 figure out what to do with it will likely be going away in the future. That's likely for the best, since it will force users to be more explicit about what they're trying to do, ie what OS they want to try to load a given binary, and also will prevent loading two or more Processes which are for different OSes to the same system, something that's possible today as far as I know since there are no consistency checks. Change-Id: Iea0012e98f39f5e20a7c351b78cdff9401f5e326 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/24783 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com> Tested-by: kokoro <noreply+kokoro@google.com>
103 lines
3.6 KiB
C++
103 lines
3.6 KiB
C++
/*
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* Copyright 2019 Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __SIM_WORKLOAD_HH__
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#define __SIM_WORKLOAD_HH__
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#include "base/loader/object_file.hh"
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#include "base/loader/symtab.hh"
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#include "params/Workload.hh"
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#include "sim/sim_object.hh"
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class System;
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class ThreadContext;
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class Workload : public SimObject
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{
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protected:
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virtual Addr fixFuncEventAddr(Addr addr) const { return addr; }
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public:
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using SimObject::SimObject;
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System *system = nullptr;
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virtual Addr getEntry() const = 0;
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virtual Loader::Arch getArch() const = 0;
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virtual const Loader::SymbolTable *symtab(ThreadContext *tc) = 0;
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virtual bool insertSymbol(Addr address, const std::string &symbol) = 0;
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/** @{ */
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/**
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* Add a function-based event to the given function, to be looked
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* up in the specified symbol table.
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*
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* The ...OrPanic flavor of the method causes the simulator to
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* panic if the symbol can't be found.
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*
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* @param symtab Symbol table to use for look up.
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* @param lbl Function to hook the event to.
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* @param desc Description to be passed to the event.
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* @param args Arguments to be forwarded to the event constructor.
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*/
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template <class T, typename... Args>
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T *
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addFuncEvent(const Loader::SymbolTable *symtab, const char *lbl,
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const std::string &desc, Args... args)
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{
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Addr addr M5_VAR_USED = 0; // initialize only to avoid compiler warning
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if (symtab->findAddress(lbl, addr)) {
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return new T(system, desc, fixFuncEventAddr(addr),
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std::forward<Args>(args)...);
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}
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return nullptr;
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}
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template <class T>
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T *
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addFuncEvent(const Loader::SymbolTable *symtab, const char *lbl)
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{
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return addFuncEvent<T>(symtab, lbl, lbl);
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}
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template <class T, typename... Args>
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T *
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addFuncEventOrPanic(const Loader::SymbolTable *symtab, const char *lbl,
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Args... args)
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{
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T *e = addFuncEvent<T>(symtab, lbl, std::forward<Args>(args)...);
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panic_if(!e, "Failed to find symbol '%s'", lbl);
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return e;
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}
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/** @} */
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};
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#endif // __SIM_WORKLOAD_HH__
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