Korey Sewell
eedd04e894
inorder: cleanup dprintfs in cache unit
2011-06-19 21:43:42 -04:00
Korey Sewell
078f914e69
inorder: SE mode TLB faults
...
handle them like we do in FS mode, by blocking the TLB until the fault
is handled by the fault->invoke()
2011-06-19 21:43:42 -04:00
Korey Sewell
3cb23bd3a2
inorder:tracing: fix fault tracing bug
2011-06-19 21:43:42 -04:00
Korey Sewell
fe3a2aa4a3
inorder: se compile fixes
2011-06-19 21:43:42 -04:00
Korey Sewell
e572c01120
inorder: add necessary debug flag header files
2011-06-19 21:43:41 -04:00
Korey Sewell
59686795e3
mips: mark unaligned access flag as true
2011-06-19 21:43:41 -04:00
Korey Sewell
91a88ae8ce
inorder: clear fetchbuffer on traps
...
implement clearfetchbufferfunction
extend predecoder to use multiple threads and clear those on trap
2011-06-19 21:43:41 -04:00
Korey Sewell
2dae0e8735
inorder: use separate float-reg bits function in dyninst
...
this will make sure we get the correct view of a FP register
2011-06-19 21:43:41 -04:00
Korey Sewell
8c0def8d03
inorder: use trapPending flag to manage traps
2011-06-19 21:43:41 -04:00
Korey Sewell
5ef0b7a9db
inorder/dtb: make sure DTB translate correct address
...
The DTB expects the correct PC in the ThreadContext
but how if the memory accesses are speculative? Shouldn't
we send along the requestor's PC to the translate functions?
2011-06-19 21:43:41 -04:00
Korey Sewell
716e447da8
inorder: handle serializing instructions
...
including IPR accesses and store-conditionals. These class of instructions will not
execute correctly in a superscalar machine
2011-06-19 21:43:41 -04:00
Korey Sewell
83a0fd24f7
alpha: fix warn_once for prefetches
2011-06-19 21:43:40 -04:00
Korey Sewell
33a6020f2e
alpha: naming for dtb faults
...
Just "dfault" gets confusing while debugging. Why not
differentiate whether it's an access violation or page
fault
2011-06-19 21:43:40 -04:00
Korey Sewell
561c33f082
inorder: dont handle multiple faults on same cycle
...
if a faulting instruction reaches an execution unit,
then ignore it and pass it through the pipeline.
Once we recognize the fault in the graduation unit,
dont allow a second fault to creep in on the same cycle.
2011-06-19 21:43:40 -04:00
Korey Sewell
c4deabfb97
inorder: register ports for FS mode
...
handle "snoop" port registration as well as functional
port setup for FS mode
2011-06-19 21:43:40 -04:00
Korey Sewell
f1c3691356
inorder: check for interrupts each tick
...
use a dummy instruction to facilitate the squash after
the interrupts trap
2011-06-19 21:43:40 -04:00
Korey Sewell
0bfdf342da
inorder: explicit fault check
...
Before graduating an instruction, explicitly check fault
by making the fault check it's own separate command
that can be put on an instruction schedule.
2011-06-19 21:43:40 -04:00
Korey Sewell
5f608dd2e9
inorder: squash and trap behind a tlb fault
2011-06-19 21:43:39 -04:00
Korey Sewell
e0e387c2a9
inorder: stall stores on store conditionals & compare/swaps
2011-06-19 21:43:39 -04:00
Korey Sewell
f268d7d004
alpha: make hwrei a control inst
...
this always changes the PC and is basically an impromptu branch instruction. why
not speculate on this instead of always be forced to mispredict/squash after the
hwrei gets resolved?
The InOrder model needs this marked as "isControl" so it knows to update the PC
after the ALU executes it. If this isnt marked as control, then it's going to
force the model to check the PC of every instruction at commit (what O3 does?),
and that would be a wasteful check for a very high percentage of instructions.
2011-06-19 21:43:39 -04:00
Korey Sewell
e8b7df072b
inorder: make InOrder CPU FS compilable/visible
...
make syscall a SE mode only functionality
copy over basic FS functions (hwrei) to make FS compile
2011-06-19 21:43:39 -04:00
Korey Sewell
d71b95d84d
inorder: remove memdep tracking for default pipeline
...
speculative load/store pipelines can reenable this
2011-06-19 21:43:39 -04:00
Korey Sewell
b72bdcf4f8
inorder: fetchBuffer tracking
...
calculate blocks in use for the fetch buffer to figure out how many total blocks
are pending
2011-06-19 21:43:39 -04:00
Korey Sewell
4d4c7d79d0
inorder: redefine DynInst FP result type
...
Sharing the FP value w/the integer values was giving inconsistent results esp. when
their is a 32-bit integer register matched w/a 64-bit float value
2011-06-19 21:43:38 -04:00
Korey Sewell
db8b1e4b78
inorder: treat SE mode syscalls as a trapping instruction
...
define a syscallContext to schedule the syscall and then use syscall() to actually perform the action
2011-06-19 21:43:38 -04:00
Korey Sewell
c95fe261ab
inorder: bug in mdu
...
segfault was caused by squashed multiply thats in the process of an event.
use isProcessing flag to handle this and cleanup the MDU code
2011-06-19 21:43:38 -04:00
Korey Sewell
4c979f9325
inorder: optionally track faulting instructions
2011-06-19 21:43:38 -04:00
Korey Sewell
22ba1718c4
inorder: cleanup events in resource pool
...
remove events in the resource pool that can be called from the CPU event, since the CPU
event is scheduled at the same time at the resource pool event.
----
Also, match the resPool event function names to the cpu event function names
----
2011-06-19 21:43:38 -04:00
Korey Sewell
e8082a28c8
inorder: don't stall after stores
...
once a ST is sent off, it's OK to keep processing, however it's a little more
complicated to handle the packet acknowledging the store is completed
2011-06-19 21:43:38 -04:00
Korey Sewell
379c23199e
inorder: don't stall after stores
...
once a ST is sent off, it's OK to keep processing, however it's a little more
complicated to handle the packet acknowledging the store is completed
2011-06-19 21:43:37 -04:00
Korey Sewell
4c9ad53cc5
inorder: remove decode squash
...
also, cleanup comments for gem5.fast compilation
2011-06-19 21:43:37 -04:00
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