Commit graph

8687 commits

Author SHA1 Message Date
Korey Sewell
a444133e73 inorder: support for compare and swap insts
dont treat read() and write() fields as mut. exclusive
2011-06-19 21:43:37 -04:00
Korey Sewell
89d0f95bf0 inorder: branch predictor update
only update BTB on a taken branch and update branch predictor w/pcstate from instruction
---
only pay attention to branch predictor updates if the the inst. is in fact a branch
2011-06-19 21:43:37 -04:00
Korey Sewell
479195d4cf inorder: priority for grad/squash events
define separate priority resource pool squash and graduate events
2011-06-19 21:43:37 -04:00
Korey Sewell
71018f5e8b inorder: remove stalls on trap squash 2011-06-19 21:43:37 -04:00
Korey Sewell
34b2500f09 inorder: no dep. tracking for zero reg
this causes forwarding a bad value register value
2011-06-19 21:43:37 -04:00
Korey Sewell
d02fa0f6b6 imported patch recoverPCfromTrap 2011-06-19 21:43:37 -04:00
Korey Sewell
264e8178ff imported patch squash_from_next_stage 2011-06-19 21:43:36 -04:00
Korey Sewell
f0f33ae2b9 inorder: add flatDestReg member to dyninst
use it in reg. dep. tracking
2011-06-19 21:43:36 -04:00
Korey Sewell
555bd4d842 inorder: update event priorities
dont use offset to calculate this but rather an enum
that can be updated
2011-06-19 21:43:36 -04:00
Korey Sewell
7dea79535c inorder: implement trap handling 2011-06-19 21:43:36 -04:00
Korey Sewell
061b369d28 inorder: cleanup intercomm. structs/squash info 2011-06-19 21:43:35 -04:00
Korey Sewell
b195da9345 inorder: use setupSquash for misspeculation
implement a clean interface to handle branch misprediction and eventually all pipeline
flushing
2011-06-19 21:43:35 -04:00
Korey Sewell
d5d4e47f76 sparc: init. cache state in TLB
valgrind complains and its a potential source of instability, so go ahead
and set it to 0 to start
2011-06-19 21:43:35 -04:00
Korey Sewell
73cfab8b23 inorder: DynInst handling of stores for big-endian ISAs
The DynInst was not performing the host-to-guest translation
which ended up breaking stores for SPARC
2011-06-19 21:43:35 -04:00
Korey Sewell
4f34bc8b7b inorder: make marking of dest. regs an explicit request
formerly, this was implicit when you accessed the execution unit
or the use-def unit but it's better that this just be something
that a user can specify.
2011-06-19 21:43:35 -04:00
Korey Sewell
946b0ed4f4 inorder: simplify handling of split accesses 2011-06-19 21:43:35 -04:00
Korey Sewell
1a6d25dc47 inorder: addtl functionaly for inst. skeds
add find and end functions for inst. schedules
that can search by stage number
2011-06-19 21:43:35 -04:00
Korey Sewell
8b54858831 inorder: register file stats
keep stats for int/float reg file usage instead
of aggregating across reg file types
2011-06-19 21:43:34 -04:00
Korey Sewell
085f30ff9c inorder: scheduling for nonspec insts
make handling of speculative and nonspeculative insts
more explicit
2011-06-19 21:43:34 -04:00
Korey Sewell
3c417ea23a inorder: find register dependencies "lazily"
Architectures like SPARC need to read the window pointer
in order to figure out it's register dependence. However,
this may not get updated until after an instruction gets
executed, so now we lazily detect the register dependence
in the EXE stage (execution unit or use_def). This
makes sure we get the mapping after the most current change.
2011-06-19 21:43:34 -04:00
Korey Sewell
bd67ee9852 inorder: assert on macro-ops
provide a sanity check for someone coding
a new architecture
2011-06-19 21:43:34 -04:00
Korey Sewell
ee7062d94d inorder: handle faults at writeback stage
call trap function when a fault is received
2011-06-19 21:43:34 -04:00
Korey Sewell
17f5749dbb inorder: ISA-zero reg handling
ignore writes to the ISA zero register
2011-06-19 21:43:34 -04:00
Korey Sewell
2a59fcfbe9 inorder: update support for branch delay slots 2011-06-19 21:43:34 -04:00
Korey Sewell
d4b4ef1324 inorder: inst. iterator cleanup
get rid of accessing iterators (for instructions) by reference
2011-06-19 21:43:34 -04:00
Korey Sewell
b43eeaf2e2 cpus/isa: add a != operator for pcstate 2011-06-19 21:43:33 -04:00
Korey Sewell
e2f9266dbf inorder: update bpred code
clean up control flow to make it easier to understand
2011-06-19 21:43:33 -04:00
Korey Sewell
6df6365095 inorder: add types for dependency checks 2011-06-19 21:43:33 -04:00
Korey Sewell
19e3eb2915 inorder: use flattenIdx for reg indexing
- also use "threadId()" instead of readTid() everywhere
- this will help support more complex ISA indexing
2011-06-19 21:43:33 -04:00
Korey Sewell
b2e5152e16 simple-thread: give a name() function for debugging w/the SimpleThread object 2011-06-19 21:43:33 -04:00
Korey Sewell
76c60c5f93 inorder: use m5_hash_map for skedCache
since we dont care about if the cache of instruction schedules is sorted or not,
then the hash map should be faster
2011-06-19 21:43:33 -04:00
Ali Saidi
0b7ca66919 ARM: Cleanup m5ops usage of r0 and r1 a bit. 2011-06-17 12:20:11 -05:00
Gedare Bloom
3f1f16703d ARM: Add m5ops and related support for workbegin() and workend() to ARM ISA. 2011-06-17 12:20:10 -05:00
Ali Saidi
8b4307f8d8 ARM: Handle case where new TLB size is different from previous TLB size.
After a checkpoint we need to make sure that we restore the right
number of entries.
2011-06-16 15:08:12 -05:00
Chander Sudanthi
9fe3610b32 ARM: Fix memset on TLB flush and initialization
Instead of clearing the entire TLB on initialization and flush, the code was
clearing only one element.  This patch corrects the memsets in the init and
flush routines.
2011-06-16 15:08:11 -05:00
Nilay Vaish
8bf92329ee Ruby: Correct set LONG_BITS and INDEX_SHIFT in class Set.
The code for Set class was written under the assumption that
std::numeric_limits<long>::digits returns the number of bits used for
data type long, which was presumed to be either 32 or 64. But return value
is actually one less, that is, it is either 31 or 63. The value is now
being incremented by 1 so as to correctly set it.
2011-06-14 19:51:44 -05:00
Gabe Black
91622602c2 Loader: Handle bad section names when loading an ELF file.
If there's a problem when reading the section names from a supposed ELF file,
this change makes gem5 print an error message as returned by libelf and die.
Previously these sorts of errors would make gem5 segfault when it tried to
access the section name through a NULL pointer.
2011-06-12 23:52:21 -07:00
Gabe Black
7bc68151b7 LibElf: Build the error management code in libelf.
This change makes some minor changes to get the error management code in
libelf to build on Linux and to build it into the library.
2011-06-12 23:51:59 -07:00
Korey Sewell
1aa4869ff0 sparc: update long regressions 2011-06-12 21:35:03 -04:00
Korey Sewell
fb8c958241 sparc: update o3 regressions 2011-06-10 22:15:34 -04:00
Korey Sewell
c8b43641fd o3: missing newlines on some dprintfs 2011-06-10 22:15:32 -04:00
Korey Sewell
4229bce89d sparc: don't use directcntrl branch flag
this flag is only used for early branch resolution in the O3 model (of pc-relative branches)
but this isnt cleanly working even when the branch target code is added for sparc. For now,
we'll ignore this optimization and add a todo in the SPARC ISA for future developers
2011-06-10 22:15:32 -04:00
Korey Sewell
a3862d4c59 sparc: merge regr. updates w/last update 2011-06-10 03:49:23 -04:00
Korey Sewell
9331b5d26a sparc: update simple cpu regressions
use stats file generated by zizzer
2011-06-10 03:45:24 -04:00
Korey Sewell
1a451cd2c5 sparc: compilation fixes for inorder
Add a few constants and functions that the InOrder model wants for SPARC.
* * *
sparc: add eaComp function
InOrder separates the address generation from the actual access so give
Sparc that functionality
* * *
sparc: add control flags for branches
branch predictors and other cpu model functions need to know specific information
about branches, so add the necessary flags here
2011-06-09 01:34:06 -04:00
Nilay Vaish
67bb307003 Ruby: Correctly set access permissions for directory entries
The access permissions for the directory entries are not being set correctly.
This is because pointers are not used for handling directory entries.
function. get and set functions for access permissions have been added to the
Controller state machine. The changePermission() function provided by the
AbstractEntry and AbstractCacheEntry classes has been exposed to SLICC
code once again. The set_permission() functionality has been removed.

NOTE: Each protocol will have to define these get and set functions in order
to compile successfully.
2011-06-08 11:58:09 -05:00
Gabe Black
1f7a627401 Mem: Use sysconf to get the page size instead of the PAGE_SIZE macro. 2011-06-08 00:57:50 -07:00
Gabe Black
ab3704170e ISA parser: Loosen the regular expressions matching filenames.
The regular expressions matching filenames in the ##include directives and the
internally generated ##newfile directives where only looking for filenames
composed of alpha numeric characters, periods, and dashes. In Unix/Linux, the
rules for what characters can be in a filename are much looser than that. This
change replaces those expressions with ones that look for anything other than
a quote character. Technically quote characters are allowed as well so we
should allow escaping them somehow, but the additional complexity probably
isn't worth it.
2011-06-07 00:46:54 -07:00
Gabe Black
a59a143a25 gcc 4.0: Add some virtual destructors to make gcc 4.0 happy. 2011-06-07 00:24:49 -07:00
Nilay Vaish
3a083edc30 SLICC: Remove machine name as prefix to functions
Currently, the machine name is appended before any of the functions
defined with in the sm files. This is not necessary and it also
means that these functions cannot be used outside the sm files.
This patch does away with the prefixes. Note that the generated
C++ files in which the code for these functions is present are
still named such that the machine name is the prefix.
2011-06-03 13:52:18 -05:00