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/gem5/src/mem/slicc/ast/
H A DActionDeclAST.pydiff 7839:9e556fb25900 Mon Jan 17 19:46:00 EST 2011 Nilay Vaish<nilay@cs.wisc.edu> Change interface between coherence protocols and CacheMemory
The purpose of this patch is to change the way CacheMemory interfaces with
coherence protocols. Currently, whenever a cache controller (defined in the
protocol under consideration) needs to carry out any operation on a cache
block, it looks up the tag hash map and figures out whether or not the block
exists in the cache. In case it does exist, the operation is carried out
(which requires another lookup). As observed through profiling of different
protocols, multiple such lookups take place for a given cache block. It was
noted that the tag lookup takes anything from 10% to 20% of the simulation
time. In order to reduce this time, this patch is being posted.

I have to acknowledge that the many of the thoughts that went in to this
patch belong to Brad.

Changes to CacheMemory, TBETable and AbstractCacheEntry classes:
1. The lookup function belonging to CacheMemory class now returns a pointer
to a cache block entry, instead of a reference. The pointer is NULL in case
the block being looked up is not present in the cache. Similar change has
been carried out in the lookup function of the TBETable class.
2. Function for setting and getting access permission of a cache block have
been moved from CacheMemory class to AbstractCacheEntry class.
3. The allocate function in CacheMemory class now returns pointer to the
allocated cache entry.

Changes to SLICC:
1. Each action now has implicit variables - cache_entry and tbe. cache_entry,
if != NULL, must point to the cache entry for the address on which the action
is being carried out. Similarly, tbe should also point to the transaction
buffer entry of the address on which the action is being carried out.
2. If a cache entry or a transaction buffer entry is passed on as an
argument to a function, it is presumed that a pointer is being passed on.
3. The cache entry and the tbe pointers received __implicitly__ by the
actions, are passed __explicitly__ to the trigger function.
4. While performing an action, set/unset_cache_entry, set/unset_tbe are to
be used for setting / unsetting cache entry and tbe pointers respectively.
5. is_valid() and is_invalid() has been made available for testing whether
a given pointer 'is not NULL' and 'is NULL' respectively.
6. Local variables are now available, but they are assumed to be pointers
always.
7. It is now possible for an object of the derieved class to make calls to
a function defined in the interface.
8. An OOD token has been introduced in SLICC. It is same as the NULL token
used in C/C++. If you are wondering, OOD stands for Out Of Domain.
9. static_cast can now taken an optional parameter that asks for casting the
given variable to a pointer of the given type.
10. Functions can be annotated with 'return_by_pointer=yes' to return a
pointer.
11. StateMachine has two new variables, EntryType and TBEType. EntryType is
set to the type which inherits from 'AbstractCacheEntry'. There can only be
one such type in the machine. TBEType is set to the type for which 'TBE' is
used as the name.

All the protocols have been modified to conform with the new interface.
/gem5/src/sim/
H A Ddebug.hhdiff 5882:5a047c3f3795 Mon Feb 23 14:48:00 EST 2009 Nathan Binkert <nate@binkert.org> debug: Move debug_break into src/base
/gem5/tests/long/fs/10.linux-boot/ref/x86/linux/pc-o3-timing/
H A Dsystem.pc.com_1.terminaldiff 9213:5cab5448909c Tue Sep 11 10:34:00 EDT 2012 Nilay Vaish <nilay@cs.wisc.edu> x86 Regressions: Update stats due to register predication
/gem5/src/dev/sparc/
H A Ddtod.hhdiff 9235:5aa4896ed55a Wed Sep 19 06:15:00 EDT 2012 Andreas Hansson <andreas.hansson@arm.com> AddrRange: Transition from Range<T> to AddrRange

This patch takes the final plunge and transitions from the templated
Range class to the more specific AddrRange. In doing so it changes the
obvious Range<Addr> to AddrRange, and also bumps the range_map to be
AddrRangeMap.

In addition to the obvious changes, including the removal of redundant
includes, this patch also does some house keeping in preparing for the
introduction of address interleaving support in the ranges. The Range
class is also stripped of all the functionality that is never used.
H A Diob.hhdiff 9235:5aa4896ed55a Wed Sep 19 06:15:00 EDT 2012 Andreas Hansson <andreas.hansson@arm.com> AddrRange: Transition from Range<T> to AddrRange

This patch takes the final plunge and transitions from the templated
Range class to the more specific AddrRange. In doing so it changes the
obvious Range<Addr> to AddrRange, and also bumps the range_map to be
AddrRangeMap.

In addition to the obvious changes, including the removal of redundant
includes, this patch also does some house keeping in preparing for the
introduction of address interleaving support in the ranges. The Range
class is also stripped of all the functionality that is never used.
H A Dmm_disk.hhdiff 9235:5aa4896ed55a Wed Sep 19 06:15:00 EDT 2012 Andreas Hansson <andreas.hansson@arm.com> AddrRange: Transition from Range<T> to AddrRange

This patch takes the final plunge and transitions from the templated
Range class to the more specific AddrRange. In doing so it changes the
obvious Range<Addr> to AddrRange, and also bumps the range_map to be
AddrRangeMap.

In addition to the obvious changes, including the removal of redundant
includes, this patch also does some house keeping in preparing for the
introduction of address interleaving support in the ranges. The Range
class is also stripped of all the functionality that is never used.
/gem5/src/arch/mips/linux/
H A Dlinux.ccdiff 11383:5ac090acd180 Thu Mar 17 13:24:00 EDT 2016 Brandon Potter <brandon.potter@amd.com> syscall_emul: extend mmap system call to support file backed mmaps

For O3, which has a stat that counts reg reads, there is an additional
reg read per mmap() call since there's an arg we no longer ignore.
Otherwise, stats should not be affected.
H A Dsystem.ccdiff 5268:5bfc53fe60e7 Fri Nov 16 21:32:00 EST 2007 Korey Sewell <ksewell@umich.edu> go back and fix up MIPS copyright headers
/gem5/src/arch/x86/linux/
H A Dlinux.ccdiff 11383:5ac090acd180 Thu Mar 17 13:24:00 EDT 2016 Brandon Potter <brandon.potter@amd.com> syscall_emul: extend mmap system call to support file backed mmaps

For O3, which has a stat that counts reg reads, there is an additional
reg read per mmap() call since there's an arg we no longer ignore.
Otherwise, stats should not be affected.
/gem5/src/arch/mips/
H A Dsystem.ccdiff 5268:5bfc53fe60e7 Fri Nov 16 21:32:00 EST 2007 Korey Sewell <ksewell@umich.edu> go back and fix up MIPS copyright headers
H A Dinterrupts.hhdiff 10280:5b67e1bdf6ad Wed Aug 13 06:57:00 EDT 2014 Andreas Sandberg <Andreas.Sandberg@ARM.com> mips: Remove unused private members to fix compile-time warning

Certain versions of clang complain about unused private members if
they are not used. This changeset removes such members from the
MIPS-specific classes to silence the warning.
H A Dpagetable.hhdiff 5268:5bfc53fe60e7 Fri Nov 16 21:32:00 EST 2007 Korey Sewell <ksewell@umich.edu> go back and fix up MIPS copyright headers
/gem5/src/cpu/
H A Dnativetrace.ccdiff 6329:5d8b91875859 Thu Jul 09 02:02:00 EDT 2009 Gabe Black <gblack@eecs.umich.edu> Registers: Add a registers.hh file as an ISA switched header.
This file is for register indices, Num* constants, and register types.
copyRegs and copyMiscRegs were moved to utility.hh and utility.cc.
/gem5/src/arch/x86/isa/insts/general_purpose/data_transfer/
H A Dstack_operations.pydiff 5927:5e3367b103da Wed Feb 25 13:20:00 EST 2009 Gabe Black <gblack@eecs.umich.edu> X86: Do a merge for the zero extension microop.
/gem5/src/arch/alpha/linux/
H A Dprocess.hhdiff 11851:824055fe6b30 Wed Nov 09 15:27:00 EST 2016 Brandon Potter <brandon.potter@amd.com> syscall_emul: [patch 5/22] remove LiveProcess class and use Process instead

The EIOProcess class was removed recently and it was the only other class
which derived from Process. Since every Process invocation is also a
LiveProcess invocation, it makes sense to simplify the organization by
combining the fields from LiveProcess into Process.
/gem5/tests/long/se/10.mcf/ref/x86/linux/simple-timing/
H A Dsimoutdiff 9213:5cab5448909c Tue Sep 11 10:34:00 EDT 2012 Nilay Vaish <nilay@cs.wisc.edu> x86 Regressions: Update stats due to register predication
/gem5/tests/long/se/20.parser/ref/x86/linux/simple-atomic/
H A Dconfig.inidiff 9213:5cab5448909c Tue Sep 11 10:34:00 EDT 2012 Nilay Vaish <nilay@cs.wisc.edu> x86 Regressions: Update stats due to register predication
H A Dsimoutdiff 9213:5cab5448909c Tue Sep 11 10:34:00 EDT 2012 Nilay Vaish <nilay@cs.wisc.edu> x86 Regressions: Update stats due to register predication
/gem5/tests/long/se/60.bzip2/ref/x86/linux/simple-atomic/
H A Dconfig.inidiff 9213:5cab5448909c Tue Sep 11 10:34:00 EDT 2012 Nilay Vaish <nilay@cs.wisc.edu> x86 Regressions: Update stats due to register predication
H A Dsimoutdiff 9213:5cab5448909c Tue Sep 11 10:34:00 EDT 2012 Nilay Vaish <nilay@cs.wisc.edu> x86 Regressions: Update stats due to register predication
/gem5/tests/long/se/60.bzip2/ref/x86/linux/simple-timing/
H A Dsimoutdiff 9213:5cab5448909c Tue Sep 11 10:34:00 EDT 2012 Nilay Vaish <nilay@cs.wisc.edu> x86 Regressions: Update stats due to register predication
/gem5/tests/quick/se/00.hello/ref/x86/linux/simple-atomic/
H A Dsimoutdiff 9213:5cab5448909c Tue Sep 11 10:34:00 EDT 2012 Nilay Vaish <nilay@cs.wisc.edu> x86 Regressions: Update stats due to register predication
/gem5/src/arch/hsail/insts/
H A Ddecl.hhdiff 12032:d218c2fe9440 Thu May 18 10:11:00 EDT 2017 Andreas Sandberg <andreas.sandberg@arm.com> base, sim, arch: Fix clang 5.0 warnings

Compiling gem5 with recent version of clang (4 and 5) triggers
warnings that are treated as errors:

* Global templatized static functions result in a warning if they
are not used. These should either be declared as static inline or
without the static identifier to avoid the warning.

* Some templatized classes contain static variables. The
instantiated versions of these variables / templates need to be
explicitly declared to avoid a compiler warning.

Change-Id: Ie8261144836e94ebab7ea04ccccb90927672c257
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/3420
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
/gem5/src/dev/arm/
H A Dflash_device.hhdiff 11174:5a9019db4a08 Fri Oct 23 09:51:00 EDT 2015 Andreas Hansson <andreas.hansson@arm.com> arm: Add missing explicit overrides for ARM devices

Make clang >= 3.5 happy when compiling build/ARM/gem5.opt on OSX.
/gem5/util/m5/
H A Dm5op_arm_A64.S10037:5cac77888310 Fri Jan 24 16:29:00 EST 2014 ARM gem5 Developers arm: Add support for ARMv8 (AArch64 & AArch32)

Note: AArch64 and AArch32 interworking is not supported. If you use an AArch64
kernel you are restricted to AArch64 user-mode binaries. This will be addressed
in a later patch.

Note: Virtualization is only supported in AArch32 mode. This will also be fixed
in a later patch.

Contributors:
Giacomo Gabrielli (TrustZone, LPAE, system-level AArch64, AArch64 NEON, validation)
Thomas Grocutt (AArch32 Virtualization, AArch64 FP, validation)
Mbou Eyole (AArch64 NEON, validation)
Ali Saidi (AArch64 Linux support, code integration, validation)
Edmund Grimley-Evans (AArch64 FP)
William Wang (AArch64 Linux support)
Rene De Jong (AArch64 Linux support, performance opt.)
Matt Horsnell (AArch64 MP, validation)
Matt Evans (device models, code integration, validation)
Chris Adeniyi-Jones (AArch64 syscall-emulation)
Prakash Ramrakhyani (validation)
Dam Sunwoo (validation)
Chander Sudanthi (validation)
Stephan Diestelhorst (validation)
Andreas Hansson (code integration, performance opt.)
Eric Van Hensbergen (performance opt.)
Gabe Black

Completed in 103 milliseconds

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