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The change to port proxies recently moved code out of the constructor into
initState(). This is needed for code that loads data into memory, however
for code that setups symbol tables, kernel based events, etc this is the wrong
thing to do as that code is only called when a checkpoint isn't being restored
from.
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With the recent series of patches, the symbol table loading moved from
"construct" time to "init" time, but the kernel function event
callback registration was left behind. This patch moves it to the
proper location.
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This patch is adding a clearer design intent to all objects that would
not be complete without a port proxy by making the proxies members
rathen than dynamically allocated. In essence, if NULL would not be a
valid value for the proxy, then we avoid using a pointer to make this
clear.
The same approach is used for the methods using these proxies, such as
loadSections, that now use references rather than pointers to better
reflect the fact that NULL would not be an acceptable value (in fact
the code would break and that is how this patch started out).
Overall the concept of "using a reference to express unconditional
composition where a NULL pointer is never valid" could be done on a
much broader scale throughout the code base, but for now it is only
done in the locations affected by the proxies.
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Port proxies are used to replace non-structural ports, and thus enable
all ports in the system to correspond to a structural entity. This has
the advantage of accessing memory through the normal memory subsystem
and thus allowing any constellation of distributed memories, address
maps, etc. Most accesses are done through the "system port" that is
used for loading binaries, debugging etc. For the entities that belong
to the CPU, e.g. threads and thread contexts, they wrap the CPU data
port in a port proxy.
The following replacements are made:
FunctionalPort > PortProxy
TranslatingPort > SETranslatingPortProxy
VirtualPort > FSTranslatingPortProxy
--HG--
rename : src/mem/vport.cc => src/mem/fs_translating_port_proxy.cc
rename : src/mem/vport.hh => src/mem/fs_translating_port_proxy.hh
rename : src/mem/translating_port.cc => src/mem/se_translating_port_proxy.cc
rename : src/mem/translating_port.hh => src/mem/se_translating_port_proxy.hh
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Add registers and components to better support the VersatileEB board.
Made the MIDR and SYS_ID register parameters to ArmSystem and RealviewCtrl
respectively.
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Virtual ports need TLB data which means anything touching a file in the arch
directory rebuilds any file that includes system.hh which in everything.
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Does not work with vfp arguments or arguments passed on the stack.
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--HG--
rename : src/arch/sparc/interrupts.hh => src/arch/arm/interrupts.hh
rename : src/arch/sparc/kernel_stats.hh => src/arch/arm/kernel_stats.hh
rename : src/arch/sparc/stacktrace.cc => src/arch/arm/stacktrace.cc
rename : src/arch/sparc/system.cc => src/arch/arm/system.cc
rename : src/arch/sparc/system.hh => src/arch/arm/system.hh
rename : src/dev/sparc/T1000.py => src/dev/arm/Versatile.py
rename : src/dev/sparc/t1000.cc => src/dev/arm/versatile.cc
rename : src/dev/sparc/t1000.hh => src/dev/arm/versatile.hh
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