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gem5/src/arch/alpha
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Timothy M. Jones 29e8bcead5 O3PCU: Split loads and stores that cross cache line boundaries. 
When each load or store is sent to the LSQ, we check whether it will cross a
cache line boundary and, if so, split it in two. This creates two TLB
translations and two memory requests. Care has to be taken if the first
packet of a split load is sent but the second blocks the cache. Similarly,
for a store, if the first packet cannot be sent, we must store the second
one somewhere to retry later.

This modifies the LSQSenderState class to record both packets in a split
load or store.

Finally, a new const variable, HasUnalignedMemAcc, is added to each ISA
to indicate whether unaligned memory accesses are allowed. This is used
throughout the changed code so that compiler can optimise away code dealing
with split requests for ISAs that don't need them.
2010-02-12 19:53:20 +00:00
..
freebsd Processes: Make getting and setting system call arguments part of a process object. 2009-02-27 09:22:14 -08:00
isa Alpha: Implement MVI and remaining BWX instructions. 2009-12-20 15:03:23 -06:00
linux Syscalls: Make system calls access arguments like a stack, not an array. 2009-10-30 00:44:55 -07:00
tru64 Syscalls: Make system calls access arguments like a stack, not an array. 2009-10-30 00:44:55 -07:00
AlphaInterrupts.py Turn Interrupts objects into SimObjects. Also, move local APIC state into x86's Interrupts object. 2008-10-12 09:09:56 -07:00
AlphaSystem.py Move SimObject python files alongside the C++ and fix 2007-05-27 19:21:17 -07:00
AlphaTLB.py tlb: More fixing of unified TLB 2009-04-08 22:21:27 -07:00
aout_machdep.h style: Remove non-leading tabs everywhere they shouldn't be. Developers should configure their editors to not insert tabs 2008-09-10 14:26:15 -04:00
ecoff_machdep.h New directory structure: 2006-05-22 14:29:33 -04:00
ev5.cc Get rid of the unused get(Data|Inst)Asid and (inst|data)Asid functions. 2009-07-08 23:02:22 -07:00
ev5.hh Alpha: Pull the MiscRegFile fully into the ISA object. 2009-07-08 23:02:22 -07:00
faults.cc Mem: Eliminate the NO_FAULT request flag. 2009-11-10 21:10:18 -08:00
faults.hh mem: update stuff for changes to Packet and Request 2008-11-10 11:51:17 -08:00
idle_event.cc style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
idle_event.hh Put kernel_stats back into arch. 2006-11-07 22:34:34 -05:00
interrupts.cc Turn Interrupts objects into SimObjects. Also, move local APIC state into x86's Interrupts object. 2008-10-12 09:09:56 -07:00
interrupts.hh types: clean up types, especially signed vs unsigned 2009-06-04 23:21:12 -07:00
ipr.cc style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
ipr.hh style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
isa.cc ISA: Fix compilation. 2009-10-17 01:13:41 -07:00
isa.hh ISA: Fix compilation. 2009-10-17 01:13:41 -07:00
isa_traits.hh O3PCU: Split loads and stores that cross cache line boundaries. 2010-02-12 19:53:20 +00:00
kernel_stats.cc alpha: Clean up namespace usage. 2008-09-27 21:03:47 -07:00
kernel_stats.hh stats: Fix all stats usages to deal with template fixes 2009-03-05 19:09:53 -08:00
kgdb.h Force remote gdb code to use signal numbers and not ISA specific trap numbers. 2006-11-07 23:40:54 -05:00
locked_mem.hh Alpha: Pull the MiscRegFile fully into the ISA object. 2009-07-08 23:02:22 -07:00
microcode_rom.hh CPU: Create a microcode ROM object in the CPU which is defined by the ISA. 2008-10-12 15:59:21 -07:00
mmaped_ipr.hh Alpha: Pull the MiscRegFile fully into the ISA object. 2009-07-08 23:02:22 -07:00
mt.hh alpha-isa: add mt.hh so it can compile with inorder 2009-05-12 20:18:34 -04:00
osfpal.cc style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
osfpal.hh style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
pagetable.cc style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
pagetable.hh sycalls: implement mremap() and add DATA flag for getrlimit(). mremap has been tested on Alpha, compiles for the rest but not tested. I don't see why it wouldn't work though. 2009-02-16 17:47:39 -05:00
predecoder.hh includes: sort includes again 2009-05-17 14:34:52 -07:00
process.cc util: do checkpoint aggregation more cleanly, fix last changeset. 2010-01-19 22:03:44 -08:00
process.hh Syscalls: Make system calls access arguments like a stack, not an array. 2009-10-30 00:44:55 -07:00
registers.hh Registers: Add a registers.hh file as an ISA switched header. 2009-07-08 23:02:21 -07:00
regredir.cc Alpha: Missed a file in an earlier changeset. 2009-07-09 00:20:41 -07:00
regredir.hh Registers: Add a registers.hh file as an ISA switched header. 2009-07-08 23:02:21 -07:00
remote_gdb.cc Alpha: Move reg_redir into its own files, and move some constants into regfile.hh. 2009-07-08 23:02:21 -07:00
remote_gdb.hh style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
SConscript Alpha: Pull the MiscRegFile fully into the ISA object. 2009-07-08 23:02:22 -07:00
SConsopts alpha: get rid of all turbolaser remnants 2009-04-08 22:22:49 -07:00
stacktrace.cc style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
stacktrace.hh types: clean up types, especially signed vs unsigned 2009-06-04 23:21:12 -07:00
system.cc style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
system.hh style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
tlb.cc inorder-mem: skeleton support for prefetch/writehints 2009-05-12 15:01:15 -04:00
tlb.hh tlb: More fixing of unified TLB 2009-04-08 22:21:27 -07:00
types.hh Registers: Add a registers.hh file as an ISA switched header. 2009-07-08 23:02:21 -07:00
utility.cc Alpha: Pull the MiscRegFile fully into the ISA object. 2009-07-08 23:02:22 -07:00
utility.hh Alpha: Pull the MiscRegFile fully into the ISA object. 2009-07-08 23:02:22 -07:00
vtophys.cc style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00
vtophys.hh style: Make a style pass over the whole arch/alpha directory. 2008-09-27 21:03:48 -07:00