Commit graph

2542 commits

Author SHA1 Message Date
Ali Saidi
91b737ed48 ARM: Add support for Versatile Express extended memory map
Also clean up how we create boot loader memory a bit.
2012-03-01 17:26:31 -06:00
Matt Horsnell
08187e3916 ARM: Add limited CP14 support.
New kernels attempt to read CP14 what debug architecture is available.
These changes add the debug registers and return that none is currently
available.
2012-03-01 17:26:31 -06:00
Dam Sunwoo
86d1042d9f ARM: move kernel func event to correct location.
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.
2012-03-01 17:26:31 -06:00
Giacomo Gabrielli
d51478db4e ARM: fix bits-to-fp conversion function declarations.
Add extra declarations to allow the compiler to pick up the right function.
Please note that these declarations have been added as part of the
clang-related changes.
2012-03-01 17:26:30 -06:00
Nilay Vaish
4b32c9fb4d x86: Fix x86 TLB and Walker
This patch adds a function to X86 tlb that returns the
walker port. This port is required for correctly connecting
the walker ports for the cpu just switched in
2012-03-01 11:37:03 -06:00
Gabe Black
559b43a372 X86: Use the M5PanicFault fault in execute methods instead of calling panic.
If an instruction is executed speculatively and hits a situation where it
wants to panic, it should return a fault instead. If the instruction was
misspeculated, the fault can be thrown away. If the instruction wasn't
misspeculated, the fault will be invoked and the panic will still happen.
2012-02-26 15:32:53 -08:00
Andreas Hansson
9e3c8de30b MEM: Make port proxies use references rather than pointers
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.
2012-02-24 11:45:30 -05:00
Andreas Hansson
1031b824b9 MEM: Move port creation to the memory object(s) construction
This patch moves all port creation from the getPort method to be
consistently done in the MemObject's constructor. This is possible
thanks to the Swig interface passing the length of the vector ports.
Previously there was a mix of: 1) creating the ports as members (at
object construction time) and using getPort for the name resolution,
or 2) dynamically creating the ports in the getPort call. This is now
uniform. Furthermore, objects that would not be complete without a
port have these ports as members rather than having pointers to
dynamically allocated ports.

This patch also enables an elaboration-time enumeration of all the
ports in the system which can be used to determine the masterId.
2012-02-24 11:43:53 -05:00
Andreas Hansson
5a9a743cfc MEM: Introduce the master/slave port roles in the Python classes
This patch classifies all ports in Python as either Master or Slave
and enforces a binding of master to slave. Conceptually, a master (such
as a CPU or DMA port) issues requests, and receives responses, and
conversely, a slave (such as a memory or a PIO device) receives
requests and sends back responses. Currently there is no
differentiation between coherent and non-coherent masters and slaves.

The classification as master/slave also involves splitting the dual
role port of the bus into a master and slave port and updating all the
system assembly scripts to use the appropriate port. Similarly, the
interrupt devices have to have their int_port split into a master and
slave port. The intdev and its children have minimal changes to
facilitate the extra port.

Note that this patch does not enforce any port typing in the C++
world, it merely ensures that the Python objects have a notion of the
port roles and are connected in an appropriate manner. This check is
carried when two ports are connected, e.g. bus.master =
memory.port. The following patches will make use of the
classifications and specialise the C++ ports into masters and slaves.
2012-02-13 06:43:09 -05:00
Gabe Black
eada4268ef X86: open flags: Another patch from Vince Weaver 2012-02-12 16:41:29 -08:00
Anthony Gutierrez
542d0ceebc cpu: add separate stats for insts/ops both globally and per cpu model 2012-02-12 16:07:39 -06:00
Ali Saidi
8aaa39e93d mem: Add a master ID to each request object.
This change adds a master id to each request object which can be
used identify every device in the system that is capable of issuing a request.
This is part of the way to removing the numCpus+1 stats in the cache and
replacing them with the master ids. This is one of a series of changes
that make way for the stats output to be changed to python.
2012-02-12 16:07:38 -06:00
Gabe Black
5b557a314f SPARC: Make PSTATE and HPSTATE a BitUnion.
This gets rid of cryptic bits of code with lots of bit manipulation, and makes
some comments redundant.
2012-02-11 14:16:38 -08:00
Gabe Black
f2b46fdb85 Faults: Turn off arch/faults.hh
Because there are no longer architecture independent but specialized functions
in arch/XXX/faults.hh, code that isn't using the faults from a particular ISA
no longer needs to be able to include them through the switching header file
arch/faults.hh. By removing that header file (arch/faults.hh), the potential
interface between ISA code and non ISA code is narrowed.
2012-02-07 04:43:21 -08:00
Gabe Black
ea8b347dc5 Merge with head, hopefully the last time for this batch. 2012-01-31 22:40:08 -08:00
Koan-Sin Tan
7d4f187700 clang: Enable compiling gem5 using clang 2.9 and 3.0
This patch adds the necessary flags to the SConstruct and SConscript
files for compiling using clang 2.9 and later (on Ubuntu et al and OSX
XCode 4.2), and also cleans up a bunch of compiler warnings found by
clang. Most of the warnings are related to hidden virtual functions,
comparisons with unsigneds >= 0, and if-statements with empty
bodies. A number of mismatches between struct and class are also
fixed. clang 2.8 is not working as it has problems with class names
that occur in multiple namespaces (e.g. Statistics in
kernel_stats.hh).

clang has a bug (http://llvm.org/bugs/show_bug.cgi?id=7247) which
causes confusion between the container std::set and the function
Packet::set, and this is currently addressed by not including the
entire namespace std, but rather selecting e.g. "using std::vector" in
the appropriate places.
2012-01-31 12:05:52 -05:00
Dam Sunwoo
0ed3c84c7b util: implements "writefile" gem5 op to export file from guest to host filesystem
Usage: m5 writefile <filename>

File will be created in the gem5 output folder with the identical filename.
Implementation is largely based on the existing "readfile" functionality.
Currently does not support exporting of folders.
2012-01-31 07:46:04 -08:00
Geoffrey Blake
af6aaf2581 CheckerCPU: Re-factor CheckerCPU to be compatible with current gem5
Brings the CheckerCPU back to life to allow FS and SE checking of the
O3CPU.  These changes have only been tested with the ARM ISA.  Other
ISAs potentially require modification.
2012-01-31 07:46:03 -08:00
Gabe Black
e88165a431 Merge with main repository. 2012-01-30 21:07:57 -08:00
Andreas Hansson
ef9fc01073 MEM: Clean-up of Functional/Virtual/TranslatingPort remnants
This patch cleans up forward declarations and a member-function
prototype that still referred to the old FunctionalPort, VirtualPort
and TranslatingPort. There is no change in functionality.
2012-01-30 03:44:25 -05:00
Gabe Black
dc0e629ea1 Implement Ali's review feedback.
Try to decrease indentation, and remove some redundant FullSystem checks.
2012-01-29 02:04:34 -08:00
Gabe Black
eab5c60286 MIPS: Fix a compiler warning from the eret instruction. 2012-01-28 07:24:23 -08:00
Gabe Black
c3d41a2def Merge with the main repo.
--HG--
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
2012-01-28 07:24:01 -08:00
Gabe Black
da2a4acc26 Merge yet again with the main repository. 2012-01-16 04:27:10 -08:00
Andreas Hansson
07cf9d914b MEM: Separate queries for snooping and address ranges
This patch simplifies the address-range determination mechanism and
also unifies the naming across ports and devices. It further splits
the queries for determining if a port is snooping and what address
ranges it responds to (aiming towards a separation of
cache-maintenance ports and pure memory-mapped ports). Default
behaviours are such that most ports do not have to define isSnooping,
and master ports need not implement getAddrRanges.
2012-01-17 12:55:09 -06:00
Andreas Hansson
f85286b3de MEM: Add port proxies instead of non-structural ports
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
2012-01-17 12:55:08 -06:00
Steve Reinhardt
7a3a37307a Alpha: warn_once about broken PAL breakpoints.
A recent changeset (aae12ce9f34c) removed support for
PAL-mode breakpoints in Alpha, since it was awkward
and likely unused.  This patch lets a user know if they
potentially run into this limitation.
2012-01-16 19:01:27 -08:00
Deyuan Guo
4a59cf00b4 mips: compatibility between MIPS_SE and cross compiler from CodeSorcery 2012-01-12 09:59:01 -05:00
Deyuan Guo
31b6941a52 mips: Fix bugs in faults.cc/hh and tlb.cc for MIPS_FS 2012-01-12 09:59:00 -05:00
Deyuan Guo
a40ec5671f mips: Fix decoder of two float-convert instructions 2012-01-12 09:58:59 -05:00
Deyuan Guo
7f782a6c79 mips: definition of MIPS64_QNAN in registers.hh 2012-01-12 09:58:58 -05:00
Nilay Vaish
acbc03ae46 X86: Add memory fence to I/O instructions 2012-01-09 20:13:31 -06:00
Ali Saidi
80a6907927 ARM: Add support for initparam m5 op 2012-01-09 18:08:20 -06:00
Gabe Black
241cc0c840 Another merge with the main repository. 2012-01-07 02:16:37 -08:00
Gabe Black
ec936364b7 Merge with the main repository again. 2012-01-07 02:15:35 -08:00
Gabe Black
36a822f08e Merge with main repository. 2012-01-07 02:10:34 -08:00
Nilay Vaish
bd23a37198 X86 TLB: Move a DPRINTF to its correct place
The DPRINTF for doing protection checks appears after the checks have been
carried out. It is possible that the function returns while the checks are
being carried, in which case the printf is missed out. This patch moves the
DPRINTF before the checks.

--HG--
extra : rebase_source : 172896057e593022444d882ea93323a5d9f77a89
2012-01-05 11:00:32 -06:00
Nathan Binkert
6ef9691035 gcc: fix unused variable warnings from GCC 4.6.1
--HG--
extra : rebase_source : f9e22de341493a25ac6106c16ac35c61c128a080
2011-12-13 11:49:27 -08:00
Mitchell Hayenga
fa753c1454 Device: Make changes necessary to support a coherent page walker cache.
Adds the flag 'recvSnoops' which enables pagewalkers using DmaPorts,
to properly configure snoops.

--HG--
extra : rebase_source : 64207bef62c3268ddff2236ee4adae873812325f
2011-12-01 00:15:22 -08:00
Ali Saidi
5901c5223f ARM: Add IsSerializeAfter and IsNonSpeculative flag to the syscall instruction .
Squashes the subsequent instructions in O3 pipe after the service call, so that
they see the effect of the system call when re-executed. This isn't really an issue
with FS mode, but can show up in SE mode.

--HG--
extra : rebase_source : 613a69fe1d9834261e25a8cd340aa6b47578e1fe
2011-12-01 00:15:22 -08:00
Gabe Black
93fb460fad X86: Fix a bad segmentation check for the stack segment.
--HG--
extra : rebase_source : 755f4f6eae52f88ed516a1f1ac9e2565725d89c1
2011-12-01 00:17:14 -05:00
Gabe Black
87b66c9ae3 SPARC: Minor style fix.
I forgot to fix this as well per Ali's feedback.

--HG--
extra : rebase_source : e70d031cb5f91e2212a1a73ea1769bf0549b826c
2011-11-28 04:35:55 -05:00
Gabe Black
e7d0c999a1 SPARC: Isolate FP operations enough to prevent code/rounding mode reordering.
--HG--
extra : rebase_source : ee79ab89c5a707c1294f38abb84c60f8ef64196c
2011-11-27 22:00:58 -05:00
Gabe Black
49a2d54e1a X86: Fix the constant detecting three byte opcodes in the predecoder.
--HG--
extra : rebase_source : b64c3d2348cb73177024695fb6e205d51bf1cda9
2011-11-20 05:10:05 -08:00
Gabe Black
85424bef19 SE/FS: Get rid of includes of config/full_system.hh. 2011-11-18 02:20:22 -08:00
Gabe Black
ec32d85f9d Power: Add a stubbed out stacktrace.cc 2011-11-13 12:40:15 -08:00
Gabe Black
ff4ba82610 POWER: Add a stub implementation of initCPU. 2011-11-13 12:40:15 -08:00
Gabe Black
1a8f1809fa Power: Add a stub kernel_stats.hh. 2011-11-13 12:40:15 -08:00
Gabe Black
6d68887c87 Power: Implement a stub for getArgument. 2011-11-13 02:05:27 -08:00
Nilay Vaish
582ea4d543 x86: Add microop for fence
This patch adds a new microop for memory barrier. The microop itself does
nothing, but since it is marked as a memory barrier, the O3 CPU should flush
all the pending loads and stores before the fence to the memory system.
2011-11-03 22:52:21 -05:00