Merge ktlim@zamp:./local/clean/o3-merge/m5

into zamp.eecs.umich.edu:/z/ktlim2/clean/o3-merge/newmem configs/boot/micro_memlat.rcS: configs/boot/micro_tlblat.rcS: src/arch/alpha/ev5.cc: src/arch/alpha/isa/decoder.isa: src/arch/alpha/isa_traits.hh: src/cpu/base.cc: src/cpu/base.hh: src/cpu/base_dyn_inst.hh: src/cpu/checker/cpu.hh: src/cpu/checker/cpu_impl.hh: src/cpu/o3/alpha/cpu_impl.hh: src/cpu/o3/alpha/params.hh: src/cpu/o3/checker_builder.cc: src/cpu/o3/commit_impl.hh: src/cpu/o3/cpu.cc: src/cpu/o3/decode_impl.hh: src/cpu/o3/fetch_impl.hh: src/cpu/o3/iew.hh: src/cpu/o3/iew_impl.hh: src/cpu/o3/inst_queue.hh: src/cpu/o3/lsq.hh: src/cpu/o3/lsq_impl.hh: src/cpu/o3/lsq_unit.hh: src/cpu/o3/lsq_unit_impl.hh: src/cpu/o3/regfile.hh: src/cpu/o3/rename_impl.hh: src/cpu/o3/thread_state.hh: src/cpu/ozone/checker_builder.cc: src/cpu/ozone/cpu.hh: src/cpu/ozone/cpu_impl.hh: src/cpu/ozone/front_end.hh: src/cpu/ozone/front_end_impl.hh: src/cpu/ozone/lw_back_end.hh: src/cpu/ozone/lw_back_end_impl.hh: src/cpu/ozone/lw_lsq.hh: src/cpu/ozone/lw_lsq_impl.hh: src/cpu/ozone/thread_state.hh: src/cpu/simple/base.cc: src/cpu/simple_thread.cc: src/cpu/simple_thread.hh: src/cpu/thread_state.hh: src/dev/ide_disk.cc: src/python/m5/objects/O3CPU.py: src/python/m5/objects/Root.py: src/python/m5/objects/System.py: src/sim/pseudo_inst.cc: src/sim/pseudo_inst.hh: src/sim/system.hh: util/m5/m5.c: Hand merge. --HG-- rename : arch/alpha/ev5.cc => src/arch/alpha/ev5.cc rename : arch/alpha/freebsd/system.cc => src/arch/alpha/freebsd/system.cc rename : arch/alpha/isa/decoder.isa => src/arch/alpha/isa/decoder.isa rename : arch/alpha/isa/mem.isa => src/arch/alpha/isa/mem.isa rename : arch/alpha/isa_traits.hh => src/arch/alpha/isa_traits.hh rename : arch/alpha/linux/system.cc => src/arch/alpha/linux/system.cc rename : arch/alpha/system.cc => src/arch/alpha/system.cc rename : arch/alpha/tru64/system.cc => src/arch/alpha/tru64/system.cc rename : cpu/base.cc => src/cpu/base.cc rename : cpu/base.hh => src/cpu/base.hh rename : cpu/base_dyn_inst.hh => src/cpu/base_dyn_inst.hh rename : cpu/checker/cpu.hh => src/cpu/checker/cpu.hh rename : cpu/checker/cpu.cc => src/cpu/checker/cpu_impl.hh rename : cpu/o3/alpha_cpu_builder.cc => src/cpu/o3/alpha/cpu_builder.cc rename : cpu/checker/o3_cpu_builder.cc => src/cpu/o3/checker_builder.cc rename : cpu/o3/commit_impl.hh => src/cpu/o3/commit_impl.hh rename : cpu/o3/cpu.cc => src/cpu/o3/cpu.cc rename : cpu/o3/fetch_impl.hh => src/cpu/o3/fetch_impl.hh rename : cpu/o3/iew.hh => src/cpu/o3/iew.hh rename : cpu/o3/iew_impl.hh => src/cpu/o3/iew_impl.hh rename : cpu/o3/inst_queue.hh => src/cpu/o3/inst_queue.hh rename : cpu/o3/inst_queue_impl.hh => src/cpu/o3/inst_queue_impl.hh rename : cpu/o3/lsq_impl.hh => src/cpu/o3/lsq_impl.hh rename : cpu/o3/lsq_unit.hh => src/cpu/o3/lsq_unit.hh rename : cpu/o3/lsq_unit_impl.hh => src/cpu/o3/lsq_unit_impl.hh rename : cpu/o3/mem_dep_unit_impl.hh => src/cpu/o3/mem_dep_unit_impl.hh rename : cpu/o3/rename.hh => src/cpu/o3/rename.hh rename : cpu/o3/rename_impl.hh => src/cpu/o3/rename_impl.hh rename : cpu/o3/thread_state.hh => src/cpu/o3/thread_state.hh rename : cpu/o3/tournament_pred.cc => src/cpu/o3/tournament_pred.cc rename : cpu/o3/tournament_pred.hh => src/cpu/o3/tournament_pred.hh rename : cpu/checker/cpu_builder.cc => src/cpu/ozone/checker_builder.cc rename : cpu/ozone/cpu.hh => src/cpu/ozone/cpu.hh rename : cpu/ozone/cpu_builder.cc => src/cpu/ozone/cpu_builder.cc rename : cpu/ozone/cpu_impl.hh => src/cpu/ozone/cpu_impl.hh rename : cpu/ozone/front_end.hh => src/cpu/ozone/front_end.hh rename : cpu/ozone/front_end_impl.hh => src/cpu/ozone/front_end_impl.hh rename : cpu/ozone/inorder_back_end_impl.hh => src/cpu/ozone/inorder_back_end_impl.hh rename : cpu/ozone/inst_queue_impl.hh => src/cpu/ozone/inst_queue_impl.hh rename : cpu/ozone/lw_back_end.hh => src/cpu/ozone/lw_back_end.hh rename : cpu/ozone/lw_back_end_impl.hh => src/cpu/ozone/lw_back_end_impl.hh rename : cpu/ozone/lw_lsq.hh => src/cpu/ozone/lw_lsq.hh rename : cpu/ozone/lw_lsq_impl.hh => src/cpu/ozone/lw_lsq_impl.hh rename : cpu/ozone/simple_params.hh => src/cpu/ozone/simple_params.hh rename : cpu/ozone/thread_state.hh => src/cpu/ozone/thread_state.hh rename : cpu/simple/cpu.cc => src/cpu/simple/base.cc rename : cpu/cpu_exec_context.cc => src/cpu/simple_thread.cc rename : cpu/thread_state.hh => src/cpu/thread_state.hh rename : dev/ide_disk.hh => src/dev/ide_disk.hh rename : python/m5/objects/BaseCPU.py => src/python/m5/objects/BaseCPU.py rename : python/m5/objects/AlphaFullCPU.py => src/python/m5/objects/O3CPU.py rename : python/m5/objects/OzoneCPU.py => src/python/m5/objects/OzoneCPU.py rename : python/m5/objects/Root.py => src/python/m5/objects/Root.py rename : python/m5/objects/System.py => src/python/m5/objects/System.py rename : sim/eventq.hh => src/sim/eventq.hh rename : sim/pseudo_inst.cc => src/sim/pseudo_inst.cc rename : sim/pseudo_inst.hh => src/sim/pseudo_inst.hh rename : sim/serialize.cc => src/sim/serialize.cc rename : sim/stat_control.cc => src/sim/stat_control.cc rename : sim/stat_control.hh => src/sim/stat_control.hh rename : sim/system.hh => src/sim/system.hh extra : convert_revision : 135d90e43f6cea89f9460ba4e23f4b0b85886e7d
2006-09-30 23:43:23 -04:00 · 2006-09-30 23:43:23 -04:00 · 4ed184eade
commit 4ed184eade
parent 51425382ca 30b719fd76
87 changed files with 8363 additions and 515 deletions
--- a/configs/boot/ammp.rcS
+++ b/configs/boot/ammp.rcS
@ -0,0 +1,12 @@
+#!/bin/sh
+
+cd /benchmarks/spec/ammp00/
+
+/sbin/m5 checkpoint 0 0
+/sbin/m5 checkpoint 100000000 200000000
+
+/sbin/m5 loadsymbol
+
+/sbin/m5 resetstats 
+./ammp < input/mdred.in
+/sbin/m5 exit
--- a/configs/boot/ammp.symbol
+++ b/configs/boot/ammp.symbol
@ -0,0 +1,257 @@
+000000012001da40 T AMMPmonitor
+000000012001dfc0 T AMMPmonitor_mute
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+0000000120034500 T _PROCEDURE_LINKAGE_TABLE_
+00000001200344e0 d __CTOR_END__
+00000001200344d8 d __CTOR_LIST__
+00000001200344f0 d __DTOR_END__
+00000001200344e8 d __DTOR_LIST__
+0000000120034334 r __FRAME_END__
+00000001200344f8 d __JCR_END__
+00000001200344f8 d __JCR_LIST__
+0000000120034da0 A __bss_start
+00000001200328c8 D __data_start
+0000000120020c40 t __do_global_ctors_aux
+0000000120001090 t __do_global_dtors_aux
+0000000120034d68 G __dso_handle
+00000001200328c8 A __fini_array_end
+00000001200328c8 A __fini_array_start
+00000001200328c8 A __init_array_end
+00000001200328c8 A __init_array_start
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+0000000120034da0 A _edata
+0000000120035418 A _end
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--- a/configs/boot/art.rcS
+++ b/configs/boot/art.rcS
@ -0,0 +1,7 @@
+#!/bin/sh
+
+#/benchmarks/spec/art00/art -scanfile c756hel.in -trainfile1 a10.img -stride 2 -startx 134 -starty 220 -endx 184 -endy 240 -objects 3
+cd /benchmarks/spec/art00/
+/sbin/m5 resetstats 
+/benchmarks/spec/art00/art -scanfile c756hel.in -trainfile1 a10.img -stride 5 -startx 134 -starty 220 -endx 184 -endy 240 -objects 1
+/sbin/m5 exit
--- a/configs/boot/bonnie.rcS
+++ b/configs/boot/bonnie.rcS
@ -0,0 +1,13 @@
+#!/bin/sh
+#
+# /etc/init.d/rcS
+#
+
+echo -n "Mounting empty disk..."
+mkdir /tmp-space
+/bin/mount /dev/hdb1 /tmp-space
+chmod a+rwx /tmp-space
+echo "done."
+
+/bin/bonnie++ -u 99 -s 700 -r 0 -n 0 -f -F -d /tmp-space
+m5 exit
--- a/configs/boot/bonnie.symbol
+++ b/configs/boot/bonnie.symbol
@ -0,0 +1,309 @@
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--- a/configs/boot/bzip.rcS
+++ b/configs/boot/bzip.rcS
@ -0,0 +1,6 @@
+#!/bin/sh
+
+cd /benchmarks/spec/bzip200/
+/sbin/m5 resetstats 
+/benchmarks/spec/bzip200/bzip2 lgred.graphic 1
+/sbin/m5 exit
--- a/configs/boot/cc1.symbol
+++ b/configs/boot/cc1.symbol
--- a/configs/boot/equake.rcS
+++ b/configs/boot/equake.rcS
@ -0,0 +1,12 @@
+#!/bin/sh
+
+cd /benchmarks/spec/equake00/
+
+/sbin/m5 checkpoint 0 0
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+
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+
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--- a/configs/boot/equake.symbol
+++ b/configs/boot/equake.symbol
@ -0,0 +1,94 @@
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--- a/configs/boot/gcc.rcS
+++ b/configs/boot/gcc.rcS
@ -0,0 +1,12 @@
+#!/bin/sh
+
+cd /benchmarks/spec/gcc00/
+
+/sbin/m5 checkpoint 0 0
+/sbin/m5 checkpoint 100000000 200000000
+
+/sbin/m5 loadsymbol
+
+/sbin/m5 resetstats 
+./cc1 mdred.rtlanal.i
+/sbin/m5 exit
--- a/configs/boot/gzip.rcS
+++ b/configs/boot/gzip.rcS
@ -0,0 +1,12 @@
+#!/bin/sh
+
+cd /benchmarks/spec/gzip00/
+
+/sbin/m5 checkpoint 0 0
+/sbin/m5 checkpoint 100000000 200000000
+
+/sbin/m5 loadsymbol
+
+/sbin/m5 resetstats 
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+/sbin/m5 exit
--- a/configs/boot/gzip.symbol
+++ b/configs/boot/gzip.symbol
@ -0,0 +1,268 @@
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+00000001200234b8 G no_name
+00000001200234bc G no_time
+0000000120023630 S ofd
+000000012003eaa8 B ofname
+0000000120023590 s opt_len
+00000001200235d0 s orig_len
+000000012005f2a8 B outbuf
+0000000120023648 S outcnt
+00000001200234a8 g p.0
+0000000120026978 b parents
+0000000120023680 S part_nb
+00000001200235dc s peek_bits
+00000001200235f0 S pkzip
+000000012003eea8 B prev
+000000012002360c S prev_length
+0000000120023628 S progname
+0000000120026594 b pt_len
+00000001200265a8 b pt_table
+000000012002353c S quiet
+00000001200080c0 T ran
+0000000120023600 S read_buf
+000000012000b8c0 t read_c_len
+000000012000ed50 T read_error
+000000012000b130 t read_pt_len
+000000012000d2a0 t read_tree
+0000000120023530 S recursive
+0000000120023568 S remove_ofname
+0000000120023660 S save_orig_name
+0000000120009d90 t scan_tree
+00000001200236a8 S seedi
+0000000120001390 T send_bits
+0000000120009f40 t send_tree
+0000000120009540 t set_file_type
+0000000120004420 t shorten_name
+0000000120007f90 T spec_compress
+0000000120073ac8 B spec_fd
+0000000120007800 T spec_getc
+0000000120006f70 T spec_init
+0000000120007f40 T spec_initbufs
+0000000120007430 T spec_load
+0000000120008350 T spec_putc
+0000000120007090 T spec_random_load
+0000000120007670 T spec_read
+00000001200081b0 T spec_reset
+0000000120008190 T spec_rewind
+0000000120008010 T spec_uncompress
+0000000120007930 T spec_ungetc
+0000000120008210 T spec_write
+0000000120024540 b static_dtree
+0000000120023598 s static_len
+00000001200240c0 b static_ltree
+000000012000eb20 T strlwr
+0000000120023620 S strstart
+00000001200235bc s subbitbuf
+0000000120021440 d suffixes.1
+0000000120023544 S test
+0000000120023638 S time_stamp
+0000000120023524 S to_stdout
+0000000120023558 S total_in
+0000000120023560 S total_out
+000000012000a510 T unlzh
+000000012000c5c0 T unlzw
+000000012000cde0 T unpack
+000000012000d7a0 T unzip
+000000012000e4c0 T updcrc
+00000001200235e8 s valid
+0000000120023538 S verbose
+000000012000ecd0 T warn
+0000000120063aa8 B window
+00000001200234b0 G window_size
+00000001200234d0 G work
+000000012000ea20 T write_buf
+000000012000ee00 T write_error
+000000012000e220 T xmalloc
+0000000120023670 S z_len
+0000000120073aa8 B z_suffix
+0000000120023504 s zfile
+000000012000ef80 T zip
--- a/configs/boot/halt.sh
+++ b/configs/boot/halt.sh
@ -0,0 +1 @@
+m5 exit
--- a/configs/boot/ls.rcS
+++ b/configs/boot/ls.rcS
@ -0,0 +1,18 @@
+ls
+ls
+ls
+ls
+cd bin
+ls
+ls
+ls
+ls
+ls
+ls
+ls
+ls
+cd ../benchmarks
+ls
+ls
+ls
+ls
--- a/configs/boot/mcf.rcS
+++ b/configs/boot/mcf.rcS
@ -0,0 +1,12 @@
+#!/bin/sh
+
+cd /benchmarks/spec/mcf00/
+
+/sbin/m5 checkpoint 0 0
+/sbin/m5 checkpoint 100000000 200000000
+
+/sbin/m5 loadsymbol
+
+/sbin/m5 resetstats 
+/benchmarks/spec/mcf00/mcf mdred.in
+/sbin/m5 exit
--- a/configs/boot/mcf.symbol
+++ b/configs/boot/mcf.symbol
@ -0,0 +1,65 @@
+0000000120014350 D _DYNAMIC
+0000000120014608 D _GLOBAL_OFFSET_TABLE_
+0000000120014770 G _IO_stdin_used
+0000000120014518 T _PROCEDURE_LINKAGE_TABLE_
+00000001200144f8 d __CTOR_END__
+00000001200144f0 d __CTOR_LIST__
+0000000120014508 d __DTOR_END__
+0000000120014500 d __DTOR_LIST__
+000000012001434c r __FRAME_END__
+0000000120014510 d __JCR_END__
+0000000120014510 d __JCR_LIST__
+0000000120014790 A __bss_start
+0000000120014000 D __data_start
+00000001200034d0 t __do_global_ctors_aux
+0000000120000a40 t __do_global_dtors_aux
+0000000120014778 G __dso_handle
+0000000120014000 A __fini_array_end
+0000000120014000 A __fini_array_start
+0000000120014000 A __init_array_end
+0000000120014000 A __init_array_start
+0000000120003430 T __libc_csu_fini
+0000000120003380 T __libc_csu_init
+0000000120000a00 W __start
+0000000120014790 A _edata
+0000000120017c30 A _end
+0000000120003530 T _fini
+0000000120000998 T _init
+0000000120000a00 T _start
+00000001200147b0 b basket
+0000000120014798 s basket_size
+0000000120003320 T bea_compute_red_cost
+0000000120003340 T bea_is_dual_infeasible
+0000000120014790 s completed.1
+0000000120002410 T compute_red_cost
+0000000120014000 W data_start
+0000000120001480 T dual_feasible
+0000000120001090 T flow_cost
+00000001200011d0 T flow_org_cost
+0000000120000ae0 t frame_dummy
+00000001200015f0 T getfree
+0000000120000e30 T global_opt
+00000001200147a8 s group_pos
+0000000120014788 g initialize
+0000000120002420 T insert_new_arc
+0000000120000b30 T main
+00000001200179d0 B net
+00000001200147a0 s nr_group
+0000000120014780 g p.0
+0000000120016d48 b perm
+0000000120001d20 T price_out_impl
+0000000120003080 T primal_bea_mpp
+0000000120001310 T primal_feasible
+0000000120002a60 T primal_iminus
+0000000120002c00 T primal_net_simplex
+0000000120002510 T primal_start_artificial
+0000000120002ba0 T primal_update_flow
+00000001200016b0 T read_min
+0000000120001580 T refresh_neighbour_lists
+0000000120000fa0 T refresh_potential
+0000000120001c10 T replace_weaker_arc
+0000000120002310 T resize_prob
+0000000120002f30 T sort_basket
+00000001200021b0 T suspend_impl
+00000001200027e0 T update_tree
+0000000120002600 T write_circulations
--- a/configs/boot/mesa.rcS
+++ b/configs/boot/mesa.rcS
@ -0,0 +1,12 @@
+#!/bin/sh
+
+cd /benchmarks/spec/mesa00/
+
+/sbin/m5 checkpoint 0 0
+/sbin/m5 checkpoint 100000000 200000000
+
+/sbin/m5 loadsymbol
+
+/sbin/m5 resetstats 
+/benchmarks/spec/mesa00/mesa -frames 1 -meshfile lgred.in
+/sbin/m5 exit
--- a/configs/boot/mesa.symbol
+++ b/configs/boot/mesa.symbol
--- a/configs/boot/micro_tlblat2.rcS
+++ b/configs/boot/micro_tlblat2.rcS
@ -0,0 +1,3 @@
+/benchmarks/micros/lmbench/bin/alphaev6-linux-gnu/lat_mem_rd_2MB 2 8192 
+m5 exit
+
--- a/configs/boot/micro_tlblat3.rcS
+++ b/configs/boot/micro_tlblat3.rcS
@ -0,0 +1,3 @@
+/benchmarks/micros/lmbench/bin/alphaev6-linux-gnu/lat_mem_rd_2MB 20 8192 
+m5 exit
+
--- a/src/arch/alpha/ev5.cc
+++ b/src/arch/alpha/ev5.cc
@ -554,6 +554,7 @@ AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ThreadContext *tc)
    return NoFault;
 }

+
 void
 AlphaISA::copyIprs(ThreadContext *src, ThreadContext *dest)
 {
@ -562,6 +563,7 @@ AlphaISA::copyIprs(ThreadContext *src, ThreadContext *dest)
    }
 }

+
 /**
 * Check for special simulator handling of specific PAL calls.
 * If return value is false, actual PAL call will be suppressed.
--- a/src/arch/alpha/freebsd/system.cc
+++ b/src/arch/alpha/freebsd/system.cc
@ -105,6 +105,7 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(FreebsdAlphaSystem)

    Param<string> boot_osflags;
    Param<string> readfile;
+    Param<string> symbolfile;
    Param<unsigned int> init_param;

    Param<uint64_t> system_type;
@ -124,6 +125,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(FreebsdAlphaSystem)
    INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot",
                    "a"),
    INIT_PARAM_DFLT(readfile, "file to read startup script from", ""),
+    INIT_PARAM_DFLT(symbolfile, "file to read symbols from", ""),
    INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0),
    INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34),
    INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10)
@ -143,6 +145,7 @@ CREATE_SIM_OBJECT(FreebsdAlphaSystem)
    p->boot_osflags = boot_osflags;
    p->init_param = init_param;
    p->readfile = readfile;
+    p->symbolfile = symbolfile;
    p->system_type = system_type;
    p->system_rev = system_rev;
    return new FreebsdAlphaSystem(p);
--- a/src/arch/alpha/isa/decoder.isa
+++ b/src/arch/alpha/isa/decoder.isa
@ -779,10 +779,10 @@ decode OPCODE default Unknown::unknown() {
            }}, IsNonSpeculative, IsQuiesce);
            0x03: quiesceCycles({{
                AlphaPseudo::quiesceCycles(xc->tcBase(), R16);
-            }}, IsNonSpeculative, IsQuiesce);
+            }}, IsNonSpeculative, IsQuiesce, IsUnverifiable);
            0x04: quiesceTime({{
                R0 = AlphaPseudo::quiesceTime(xc->tcBase());
-            }}, IsNonSpeculative);
+            }}, IsNonSpeculative, IsUnverifiable);
            0x10: ivlb({{
                AlphaPseudo::ivlb(xc->tcBase());
            }}, No_OpClass, IsNonSpeculative);
@ -795,6 +795,9 @@ decode OPCODE default Unknown::unknown() {
            0x21: m5exit({{
                AlphaPseudo::m5exit(xc->tcBase(), R16);
            }}, No_OpClass, IsNonSpeculative);
+            0x31: loadsymbol({{
+                AlphaPseudo::loadsymbol(xc->tcBase());
+            }}, No_OpClass, IsNonSpeculative);
            0x30: initparam({{ Ra = xc->tcBase()->getCpuPtr()->system->init_param; }});
            0x40: resetstats({{
                AlphaPseudo::resetstats(xc->tcBase(), R16, R17);
--- a/src/arch/alpha/isa/mem.isa
+++ b/src/arch/alpha/isa/mem.isa
@ -528,7 +528,7 @@ def template MiscInitiateAcc {{
    Fault %(class_name)s::initiateAcc(%(CPU_exec_context)s *xc,
                                      Trace::InstRecord *traceData) const
    {
-        panic("Misc instruction does not support split access method!");
+        warn("Misc instruction does not support split access method!");
        return NoFault;
    }
 }};
@ -539,7 +539,7 @@ def template MiscCompleteAcc {{
                                      %(CPU_exec_context)s *xc,
                                      Trace::InstRecord *traceData) const
    {
-        panic("Misc instruction does not support split access method!");
+        warn("Misc instruction does not support split access method!");

        return NoFault;
    }
--- a/src/arch/alpha/isa_traits.hh
+++ b/src/arch/alpha/isa_traits.hh
@ -42,190 +42,10 @@ class StaticInstPtr;

 namespace AlphaISA
 {
-    using namespace LittleEndianGuest;

-    // These enumerate all the registers for dependence tracking.
-    enum DependenceTags {
-        // 0..31 are the integer regs 0..31
-        // 32..63 are the FP regs 0..31, i.e. use (reg + FP_Base_DepTag)
-        FP_Base_DepTag = 40,
-        Ctrl_Base_DepTag = 72,
-        Fpcr_DepTag = 72,		// floating point control register
-        Uniq_DepTag = 73,
-        Lock_Flag_DepTag = 74,
-        Lock_Addr_DepTag = 75,
-        IPR_Base_DepTag = 76
-    };
-
-    StaticInstPtr decodeInst(ExtMachInst);
-
-    // Alpha Does NOT have a delay slot
-    #define ISA_HAS_DELAY_SLOT 0
-
-    const Addr PageShift = 13;
-    const Addr PageBytes = ULL(1) << PageShift;
-    const Addr PageMask = ~(PageBytes - 1);
-    const Addr PageOffset = PageBytes - 1;
-
-#if FULL_SYSTEM
-
-    ////////////////////////////////////////////////////////////////////////
-    //
-    //  Translation stuff
-    //
-
-   const Addr PteShift = 3;
-    const Addr NPtePageShift = PageShift - PteShift;
-    const Addr NPtePage = ULL(1) << NPtePageShift;
-    const Addr PteMask = NPtePage - 1;
-
-    // User Virtual
-    const Addr USegBase = ULL(0x0);
-    const Addr USegEnd = ULL(0x000003ffffffffff);
-
-    // Kernel Direct Mapped
-    const Addr K0SegBase = ULL(0xfffffc0000000000);
-    const Addr K0SegEnd = ULL(0xfffffdffffffffff);
-
-    // Kernel Virtual
-    const Addr K1SegBase = ULL(0xfffffe0000000000);
-    const Addr K1SegEnd = ULL(0xffffffffffffffff);
-
-    // For loading... XXX This maybe could be USegEnd?? --ali
-    const Addr LoadAddrMask = ULL(0xffffffffff);
-
-    ////////////////////////////////////////////////////////////////////////
-    //
-    //  Interrupt levels
-    //
-    enum InterruptLevels
-    {
-        INTLEVEL_SOFTWARE_MIN = 4,
-        INTLEVEL_SOFTWARE_MAX = 19,
-
-        INTLEVEL_EXTERNAL_MIN = 20,
-        INTLEVEL_EXTERNAL_MAX = 34,
-
-        INTLEVEL_IRQ0 = 20,
-        INTLEVEL_IRQ1 = 21,
-        INTINDEX_ETHERNET = 0,
-        INTINDEX_SCSI = 1,
-        INTLEVEL_IRQ2 = 22,
-        INTLEVEL_IRQ3 = 23,
-
-        INTLEVEL_SERIAL = 33,
-
-        NumInterruptLevels = INTLEVEL_EXTERNAL_MAX
-    };
-
-
-    // EV5 modes
-    enum mode_type
-    {
-        mode_kernel = 0,		// kernel
-        mode_executive = 1,		// executive (unused by unix)
-        mode_supervisor = 2,	// supervisor (unused by unix)
-        mode_user = 3,		// user mode
-        mode_number			// number of modes
-    };
-
-#endif
-
-#if FULL_SYSTEM
-    ////////////////////////////////////////////////////////////////////////
-    //
-    //  Internal Processor Reigsters
-    //
-    enum md_ipr_names
-    {
-        IPR_ISR = 0x100,		// interrupt summary register
-        IPR_ITB_TAG = 0x101,	// ITLB tag register
-        IPR_ITB_PTE = 0x102,	// ITLB page table entry register
-        IPR_ITB_ASN = 0x103,	// ITLB address space register
-        IPR_ITB_PTE_TEMP = 0x104,	// ITLB page table entry temp register
-        IPR_ITB_IA = 0x105,		// ITLB invalidate all register
-        IPR_ITB_IAP = 0x106,	// ITLB invalidate all process register
-        IPR_ITB_IS = 0x107,		// ITLB invalidate select register
-        IPR_SIRR = 0x108,		// software interrupt request register
-        IPR_ASTRR = 0x109,		// asynchronous system trap request register
-        IPR_ASTER = 0x10a,		// asynchronous system trap enable register
-        IPR_EXC_ADDR = 0x10b,	// exception address register
-        IPR_EXC_SUM = 0x10c,	// exception summary register
-        IPR_EXC_MASK = 0x10d,	// exception mask register
-        IPR_PAL_BASE = 0x10e,	// PAL base address register
-        IPR_ICM = 0x10f,		// instruction current mode
-        IPR_IPLR = 0x110,		// interrupt priority level register
-        IPR_INTID = 0x111,		// interrupt ID register
-        IPR_IFAULT_VA_FORM = 0x112,	// formatted faulting virtual addr register
-        IPR_IVPTBR = 0x113,		// virtual page table base register
-        IPR_HWINT_CLR = 0x115,	// H/W interrupt clear register
-        IPR_SL_XMIT = 0x116,	// serial line transmit register
-        IPR_SL_RCV = 0x117,		// serial line receive register
-        IPR_ICSR = 0x118,		// instruction control and status register
-        IPR_IC_FLUSH = 0x119,	// instruction cache flush control
-        IPR_IC_PERR_STAT = 0x11a,	// inst cache parity error status register
-        IPR_PMCTR = 0x11c,		// performance counter register
-
-        // PAL temporary registers...
-        // register meanings gleaned from osfpal.s source code
-        IPR_PALtemp0 = 0x140,	// local scratch
-        IPR_PALtemp1 = 0x141,	// local scratch
-        IPR_PALtemp2 = 0x142,	// entUna
-        IPR_PALtemp3 = 0x143,	// CPU specific impure area pointer
-        IPR_PALtemp4 = 0x144,	// memory management temp
-        IPR_PALtemp5 = 0x145,	// memory management temp
-        IPR_PALtemp6 = 0x146,	// memory management temp
-        IPR_PALtemp7 = 0x147,	// entIF
-        IPR_PALtemp8 = 0x148,	// intmask
-        IPR_PALtemp9 = 0x149,	// entSys
-        IPR_PALtemp10 = 0x14a,	// ??
-        IPR_PALtemp11 = 0x14b,	// entInt
-        IPR_PALtemp12 = 0x14c,	// entArith
-        IPR_PALtemp13 = 0x14d,	// reserved for platform specific PAL
-        IPR_PALtemp14 = 0x14e,	// reserved for platform specific PAL
-        IPR_PALtemp15 = 0x14f,	// reserved for platform specific PAL
-        IPR_PALtemp16 = 0x150,	// scratch / whami<7:0> / mces<4:0>
-        IPR_PALtemp17 = 0x151,	// sysval
-        IPR_PALtemp18 = 0x152,	// usp
-        IPR_PALtemp19 = 0x153,	// ksp
-        IPR_PALtemp20 = 0x154,	// PTBR
-        IPR_PALtemp21 = 0x155,	// entMM
-        IPR_PALtemp22 = 0x156,	// kgp
-        IPR_PALtemp23 = 0x157,	// PCBB
-
-        IPR_DTB_ASN = 0x200,	// DTLB address space number register
-        IPR_DTB_CM = 0x201,		// DTLB current mode register
-        IPR_DTB_TAG = 0x202,	// DTLB tag register
-        IPR_DTB_PTE = 0x203,	// DTLB page table entry register
-        IPR_DTB_PTE_TEMP = 0x204,	// DTLB page table entry temporary register
-
-        IPR_MM_STAT = 0x205,	// data MMU fault status register
-        IPR_VA = 0x206,		// fault virtual address register
-        IPR_VA_FORM = 0x207,	// formatted virtual address register
-        IPR_MVPTBR = 0x208,		// MTU virtual page table base register
-        IPR_DTB_IAP = 0x209,	// DTLB invalidate all process register
-        IPR_DTB_IA = 0x20a,		// DTLB invalidate all register
-        IPR_DTB_IS = 0x20b,		// DTLB invalidate single register
-        IPR_ALT_MODE = 0x20c,	// alternate mode register
-        IPR_CC = 0x20d,		// cycle counter register
-        IPR_CC_CTL = 0x20e,		// cycle counter control register
-        IPR_MCSR = 0x20f,		// MTU control register
-
-        IPR_DC_FLUSH = 0x210,
-        IPR_DC_PERR_STAT = 0x212,	// Dcache parity error status register
-        IPR_DC_TEST_CTL = 0x213,	// Dcache test tag control register
-        IPR_DC_TEST_TAG = 0x214,	// Dcache test tag register
-        IPR_DC_TEST_TAG_TEMP = 0x215, // Dcache test tag temporary register
-        IPR_DC_MODE = 0x216,	// Dcache mode register
-        IPR_MAF_MODE = 0x217,	// miss address file mode register
-
-        NumInternalProcRegs		// number of IPR registers
-    };
-#else
-    const int NumInternalProcRegs = 0;
-#endif
-
-    // Constants Related to the number of registers
+    typedef uint32_t MachInst;
+    typedef uint64_t ExtMachInst;
+    typedef uint8_t  RegIndex;

    const int NumIntArchRegs = 32;
    const int NumPALShadowRegs = 8;
@ -233,15 +53,6 @@ namespace AlphaISA
    // @todo: Figure out what this number really should be.
    const int NumMiscArchRegs = 32;

-    const int NumIntRegs = NumIntArchRegs + NumPALShadowRegs;
-    const int NumFloatRegs = NumFloatArchRegs;
-    const int NumMiscRegs = NumMiscArchRegs;
-
-    const int TotalNumRegs = NumIntRegs + NumFloatRegs +
-        NumMiscRegs + NumInternalProcRegs;
-
-    const int TotalDataRegs = NumIntRegs + NumFloatRegs;
-
    // Static instruction parameters
    const int MaxInstSrcRegs = 3;
    const int MaxInstDestRegs = 2;
@ -265,23 +76,270 @@ namespace AlphaISA
    const int SyscallPseudoReturnReg = ArgumentReg4;
    const int SyscallSuccessReg = 19;

+
+
    const int LogVMPageSize = 13;	// 8K bytes
    const int VMPageSize = (1 << LogVMPageSize);

    const int BranchPredAddrShiftAmt = 2; // instructions are 4-byte aligned

-    const int MachineBytes = 8;
    const int WordBytes = 4;
    const int HalfwordBytes = 2;
    const int ByteBytes = 1;

-    // return a no-op instruction... used for instruction fetch faults
-    // Alpha UNOP (ldq_u r31,0(r0))
-    const ExtMachInst NoopMachInst = 0x2ffe0000;
+
+    const int NumIntRegs = NumIntArchRegs + NumPALShadowRegs;
+    const int NumFloatRegs = NumFloatArchRegs;
+    const int NumMiscRegs = NumMiscArchRegs;
+
+    // These enumerate all the registers for dependence tracking.
+    enum DependenceTags {
+        // 0..31 are the integer regs 0..31
+        // 32..63 are the FP regs 0..31, i.e. use (reg + FP_Base_DepTag)
+        FP_Base_DepTag = 40,
+        Ctrl_Base_DepTag = 72,
+        Fpcr_DepTag = 72,		// floating point control register
+        Uniq_DepTag = 73,
+        Lock_Flag_DepTag = 74,
+        Lock_Addr_DepTag = 75,
+        IPR_Base_DepTag = 76
+    };
+
+    typedef uint64_t IntReg;
+    typedef IntReg IntRegFile[NumIntRegs];
+
+    // floating point register file entry type
+    typedef union {
+        uint64_t q;
+        double d;
+    } FloatReg;
+
+    typedef union {
+        uint64_t q[NumFloatRegs];	// integer qword view
+        double d[NumFloatRegs];		// double-precision floating point view
+
+        void clear()
+        { bzero(d, sizeof(d)); }
+    } FloatRegFile;
+
+extern const Addr PageShift;
+extern const Addr PageBytes;
+extern const Addr PageMask;
+extern const Addr PageOffset;

 // redirected register map, really only used for the full system case.
 extern const int reg_redir[NumIntRegs];

+#if FULL_SYSTEM
+
+    typedef uint64_t InternalProcReg;
+
+#include "arch/alpha/isa_fullsys_traits.hh"
+
+#else
+    const int NumInternalProcRegs = 0;
+#endif
+
+    // control register file contents
+    typedef uint64_t MiscReg;
+    class MiscRegFile {
+      protected:
+        uint64_t	fpcr;		// floating point condition codes
+        uint64_t	uniq;		// process-unique register
+        bool		lock_flag;	// lock flag for LL/SC
+        Addr		lock_addr;	// lock address for LL/SC
+
+      public:
+        MiscReg readReg(int misc_reg);
+
+        //These functions should be removed once the simplescalar cpu model
+        //has been replaced.
+        int getInstAsid();
+        int getDataAsid();
+
+        MiscReg readRegWithEffect(int misc_reg, Fault &fault, ExecContext *xc);
+
+        Fault setReg(int misc_reg, const MiscReg &val);
+
+        Fault setRegWithEffect(int misc_reg, const MiscReg &val,
+                               ExecContext *xc);
+
+        void serialize(std::ostream &os);
+
+        void unserialize(Checkpoint *cp, const std::string &section);
+
+        void clear()
+        {
+            fpcr = uniq = 0;
+            lock_flag = 0;
+            lock_addr = 0;
+        }
+
+#if FULL_SYSTEM
+      protected:
+        InternalProcReg ipr[NumInternalProcRegs]; // Internal processor regs
+
+      private:
+        MiscReg readIpr(int idx, Fault &fault, ExecContext *xc);
+
+        Fault setIpr(int idx, uint64_t val, ExecContext *xc);
+
+        void copyIprs(ExecContext *xc);
+#endif
+        friend class RegFile;
+    };
+
+    const int TotalNumRegs = NumIntRegs + NumFloatRegs +
+        NumMiscRegs + NumInternalProcRegs;
+
+    const int TotalDataRegs = NumIntRegs + NumFloatRegs;
+
+    typedef union {
+        IntReg  intreg;
+        FloatReg   fpreg;
+        MiscReg ctrlreg;
+    } AnyReg;
+
+    struct RegFile {
+        IntRegFile intRegFile;		// (signed) integer register file
+        FloatRegFile floatRegFile;	// floating point register file
+        MiscRegFile miscRegs;		// control register file
+        Addr pc;			// program counter
+        Addr npc;			// next-cycle program counter
+        Addr nnpc;
+
+#if FULL_SYSTEM
+        int intrflag;			// interrupt flag
+        inline int instAsid()
+        { return EV5::ITB_ASN_ASN(miscRegs.ipr[IPR_ITB_ASN]); }
+        inline int dataAsid()
+        { return EV5::DTB_ASN_ASN(miscRegs.ipr[IPR_DTB_ASN]); }
+#endif // FULL_SYSTEM
+
+        void serialize(std::ostream &os);
+        void unserialize(Checkpoint *cp, const std::string &section);
+
+        void clear()
+        {
+            bzero(intRegFile, sizeof(intRegFile));
+            floatRegFile.clear();
+            miscRegs.clear();
+        }
+    };
+
+    static inline ExtMachInst makeExtMI(MachInst inst, const uint64_t &pc);
+
+    StaticInstPtr decodeInst(ExtMachInst);
+
+    // Alpha Does NOT have a delay slot
+    #define ISA_HAS_DELAY_SLOT 0
+
+    // return a no-op instruction... used for instruction fetch faults
+    extern const ExtMachInst NoopMachInst;
+
+    enum annotes {
+        ANNOTE_NONE = 0,
+        // An impossible number for instruction annotations
+        ITOUCH_ANNOTE = 0xffffffff,
+    };
+
+    static inline bool isCallerSaveIntegerRegister(unsigned int reg) {
+        panic("register classification not implemented");
+        return (reg >= 1 && reg <= 8 || reg >= 22 && reg <= 25 || reg == 27);
+    }
+
+    static inline bool isCalleeSaveIntegerRegister(unsigned int reg) {
+        panic("register classification not implemented");
+        return (reg >= 9 && reg <= 15);
+    }
+
+    static inline bool isCallerSaveFloatRegister(unsigned int reg) {
+        panic("register classification not implemented");
+        return false;
+    }
+
+    static inline bool isCalleeSaveFloatRegister(unsigned int reg) {
+        panic("register classification not implemented");
+        return false;
+    }
+
+    static inline Addr alignAddress(const Addr &addr,
+                                         unsigned int nbytes) {
+        return (addr & ~(nbytes - 1));
+    }
+
+    // Instruction address compression hooks
+    static inline Addr realPCToFetchPC(const Addr &addr) {
+        return addr;
+    }
+
+    static inline Addr fetchPCToRealPC(const Addr &addr) {
+        return addr;
+    }
+
+    // the size of "fetched" instructions (not necessarily the size
+    // of real instructions for PISA)
+    static inline size_t fetchInstSize() {
+        return sizeof(MachInst);
+    }
+
+    static inline MachInst makeRegisterCopy(int dest, int src) {
+        panic("makeRegisterCopy not implemented");
+        return 0;
+    }
+
+    // Machine operations
+
+    void saveMachineReg(AnyReg &savereg, const RegFile &reg_file,
+                               int regnum);
+
+    void restoreMachineReg(RegFile &regs, const AnyReg &reg,
+                                  int regnum);
+
+#if 0
+    static void serializeSpecialRegs(const Serializable::Proxy &proxy,
+                                     const RegFile &regs);
+
+    static void unserializeSpecialRegs(const IniFile *db,
+                                       const std::string &category,
+                                       ConfigNode *node,
+                                       RegFile &regs);
+#endif
+
+    /**
+     * Function to insure ISA semantics about 0 registers.
+     * @param xc The execution context.
+     */
+    template <class XC>
+    void zeroRegisters(XC *xc);
+
+    const Addr MaxAddr = (Addr)-1;
+
+#if !FULL_SYSTEM
+    static inline void setSyscallReturn(SyscallReturn return_value, RegFile *regs)
+    {
+        // check for error condition.  Alpha syscall convention is to
+        // indicate success/failure in reg a3 (r19) and put the
+        // return value itself in the standard return value reg (v0).
+        if (return_value.successful()) {
+            // no error
+            regs->intRegFile[SyscallSuccessReg] = 0;
+            regs->intRegFile[ReturnValueReg] = return_value.value();
+        } else {
+            // got an error, return details
+            regs->intRegFile[SyscallSuccessReg] = (IntReg) -1;
+            regs->intRegFile[ReturnValueReg] = -return_value.value();
+        }
+    }
+#endif
+
+    void copyRegs(ExecContext *src, ExecContext *dest);
+
+    void copyMiscRegs(ExecContext *src, ExecContext *dest);
+
+#if FULL_SYSTEM
+    void copyIprs(ExecContext *src, ExecContext *dest);
+#endif
 };

 #endif // __ARCH_ALPHA_ISA_TRAITS_HH__
--- a/src/arch/alpha/linux/system.cc
+++ b/src/arch/alpha/linux/system.cc
@ -199,6 +199,7 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(LinuxAlphaSystem)

    Param<string> boot_osflags;
    Param<string> readfile;
+    Param<string> symbolfile;
    Param<unsigned int> init_param;

    Param<uint64_t> system_type;
@ -218,6 +219,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(LinuxAlphaSystem)
    INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot",
                    "a"),
    INIT_PARAM_DFLT(readfile, "file to read startup script from", ""),
+    INIT_PARAM_DFLT(symbolfile, "file to read symbols from", ""),
    INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0),
    INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34),
    INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10)
@ -237,6 +239,7 @@ CREATE_SIM_OBJECT(LinuxAlphaSystem)
    p->boot_osflags = boot_osflags;
    p->init_param = init_param;
    p->readfile = readfile;
+    p->symbolfile = symbolfile;
    p->system_type = system_type;
    p->system_rev = system_rev;
    return new LinuxAlphaSystem(p);
--- a/src/arch/alpha/system.cc
+++ b/src/arch/alpha/system.cc
@ -229,6 +229,7 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(AlphaSystem)

    Param<std::string> boot_osflags;
    Param<std::string> readfile;
+    Param<std::string> symbolfile;
    Param<unsigned int> init_param;

    Param<uint64_t> system_type;
@ -248,6 +249,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(AlphaSystem)
    INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot",
                    "a"),
    INIT_PARAM_DFLT(readfile, "file to read startup script from", ""),
+    INIT_PARAM_DFLT(symbolfile, "file to read symbols from", ""),
    INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0),
    INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34),
    INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10)
@ -267,6 +269,7 @@ CREATE_SIM_OBJECT(AlphaSystem)
    p->boot_osflags = boot_osflags;
    p->init_param = init_param;
    p->readfile = readfile;
+    p->symbolfile = symbolfile;
    p->system_type = system_type;
    p->system_rev = system_rev;
    return new AlphaSystem(p);
--- a/src/arch/alpha/tru64/system.cc
+++ b/src/arch/alpha/tru64/system.cc
@ -103,6 +103,7 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(Tru64AlphaSystem)

    Param<string> boot_osflags;
    Param<string> readfile;
+    Param<string> symbolfile;
    Param<unsigned int> init_param;

    Param<uint64_t> system_type;
@ -122,6 +123,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(Tru64AlphaSystem)
    INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot",
                    "a"),
    INIT_PARAM_DFLT(readfile, "file to read startup script from", ""),
+    INIT_PARAM_DFLT(symbolfile, "file to read symbols from", ""),
    INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0),
    INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 12),
    INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 2<<1)
@ -141,6 +143,7 @@ CREATE_SIM_OBJECT(Tru64AlphaSystem)
    p->boot_osflags = boot_osflags;
    p->init_param = init_param;
    p->readfile = readfile;
+    p->symbolfile = symbolfile;
    p->system_type = system_type;
    p->system_rev = system_rev;

--- a/src/cpu/base.cc
+++ b/src/cpu/base.cc
@ -48,6 +48,9 @@

 #include "base/trace.hh"

+// Hack
+#include "sim/stat_control.hh"
+
 using namespace std;

 vector<BaseCPU *> BaseCPU::cpuList;
@ -57,6 +60,30 @@ vector<BaseCPU *> BaseCPU::cpuList;
 // been initialized
 int maxThreadsPerCPU = 1;

+void
+CPUProgressEvent::process()
+{
+    Counter temp = cpu->totalInstructions();
+#ifndef NDEBUG
+    double ipc = double(temp - lastNumInst) / (interval / cpu->cycles(1));
+
+    DPRINTFN("%s progress event, instructions committed: %lli, IPC: %0.8d\n",
+             cpu->name(), temp - lastNumInst, ipc);
+    ipc = 0.0;
+#else
+    cprintf("%lli: %s progress event, instructions committed: %lli\n",
+            curTick, cpu->name(), temp - lastNumInst);
+#endif
+    lastNumInst = temp;
+    schedule(curTick + interval);
+}
+
+const char *
+CPUProgressEvent::description()
+{
+    return "CPU Progress event";
+}
+
 #if FULL_SYSTEM
 BaseCPU::BaseCPU(Params *p)
    : MemObject(p->name), clock(p->clock), checkInterrupts(true),
@ -67,6 +94,7 @@ BaseCPU::BaseCPU(Params *p)
      number_of_threads(p->numberOfThreads), system(p->system)
 #endif
 {
+//    currentTick = curTick;
    DPRINTF(FullCPU, "BaseCPU: Creating object, mem address %#x.\n", this);

    // add self to global list of CPUs
@ -128,6 +156,12 @@ BaseCPU::BaseCPU(Params *p)
                p->max_loads_all_threads, *counter);
    }

+    if (p->stats_reset_inst != 0) {
+        Stats::SetupEvent(Stats::Reset, p->stats_reset_inst, 0, comInstEventQueue[0]);
+        cprintf("Stats reset event scheduled for %lli insts\n",
+                p->stats_reset_inst);
+    }
+
 #if FULL_SYSTEM
    memset(interrupts, 0, sizeof(interrupts));
    intstatus = 0;
@ -153,7 +187,6 @@ BaseCPU::BaseCPU(Params *p)
    if (params->profile)
        profileEvent = new ProfileEvent(this, params->profile);
 #endif
-
 }

 BaseCPU::Params::Params()
@ -188,6 +221,11 @@ BaseCPU::startup()
    if (!params->deferRegistration && profileEvent)
        profileEvent->schedule(curTick);
 #endif
+
+    if (params->progress_interval) {
+        new CPUProgressEvent(&mainEventQueue, params->progress_interval,
+                             this);
+    }
 }


@ -238,7 +276,11 @@ BaseCPU::registerThreadContexts()
 void
 BaseCPU::switchOut()
 {
-    panic("This CPU doesn't support sampling!");
+//    panic("This CPU doesn't support sampling!");
+#if FULL_SYSTEM
+    if (profileEvent && profileEvent->scheduled())
+        profileEvent->deschedule();
+#endif
 }

 void
@ -261,18 +303,22 @@ BaseCPU::takeOverFrom(BaseCPU *oldCPU)
        assert(newTC->getProcessPtr() == oldTC->getProcessPtr());
        newTC->getProcessPtr()->replaceThreadContext(newTC, newTC->readCpuId());
 #endif
+
+//    TheISA::compareXCs(oldXC, newXC);
    }

 #if FULL_SYSTEM
    for (int i = 0; i < TheISA::NumInterruptLevels; ++i)
        interrupts[i] = oldCPU->interrupts[i];
    intstatus = oldCPU->intstatus;
+    checkInterrupts = oldCPU->checkInterrupts;

    for (int i = 0; i < threadContexts.size(); ++i)
        threadContexts[i]->profileClear();

-    if (profileEvent)
-        profileEvent->schedule(curTick);
+    // The Sampler must take care of this!
+//    if (profileEvent)
+//        profileEvent->schedule(curTick);
 #endif
 }

--- a/src/cpu/base.hh
+++ b/src/cpu/base.hh
@ -46,6 +46,23 @@ class ThreadContext;
 class System;
 class Port;

+class CPUProgressEvent : public Event
+{
+  protected:
+    Tick interval;
+    Counter lastNumInst;
+    BaseCPU *cpu;
+
+  public:
+    CPUProgressEvent(EventQueue *q, Tick ival, BaseCPU *_cpu)
+        : Event(q, Event::Stat_Event_Pri), interval(ival), lastNumInst(0), cpu(_cpu)
+    { schedule(curTick + interval); }
+
+    void process();
+
+    virtual const char *description();
+};
+
 class BaseCPU : public MemObject
 {
  protected:
@ -53,6 +70,7 @@ class BaseCPU : public MemObject
    Tick clock;

  public:
+//    Tick currentTick;
    inline Tick frequency() const { return Clock::Frequency / clock; }
    inline Tick cycles(int numCycles) const { return clock * numCycles; }
    inline Tick curCycle() const { return curTick / clock; }
@ -120,6 +138,7 @@ class BaseCPU : public MemObject
        Counter max_insts_all_threads;
        Counter max_loads_any_thread;
        Counter max_loads_all_threads;
+        Counter stats_reset_inst;
        Tick clock;
        bool functionTrace;
        Tick functionTraceStart;
@ -128,6 +147,7 @@ class BaseCPU : public MemObject
        int cpu_id;
        Tick profile;
 #endif
+        Tick progress_interval;
        BaseCPU *checker;

        Params();
--- a/src/cpu/base_dyn_inst.hh
+++ b/src/cpu/base_dyn_inst.hh
@ -197,7 +197,7 @@ class BaseDynInst : public FastAlloc, public RefCounted

    union Result {
        uint64_t integer;
-        float fp;
+//        float fp;
        double dbl;
    };

@ -394,7 +394,7 @@ class BaseDynInst : public FastAlloc, public RefCounted
    uint64_t readIntResult() { return instResult.integer; }

    /** Returns the result of a floating point instruction. */
-    float readFloatResult() { return instResult.fp; }
+    float readFloatResult() { return (float)instResult.dbl; }

    /** Returns the result of a floating point (double) instruction. */
    double readDoubleResult() { return instResult.dbl; }
@ -419,7 +419,8 @@ class BaseDynInst : public FastAlloc, public RefCounted
    /** Records an fp register being set to a value. */
    void setFloatReg(const StaticInst *si, int idx, FloatReg val)
    {
-        instResult.fp = val;
+//        instResult.fp = val;
+        instResult.dbl = (double)val;
    }

    /** Records an fp register being set to an integer value. */
--- a/src/cpu/checker/cpu.hh
+++ b/src/cpu/checker/cpu.hh
@ -102,6 +102,7 @@ class CheckerCPU : public BaseCPU
        Process *process;
 #endif
        bool exitOnError;
+        bool updateOnError;
        bool warnOnlyOnLoadError;
    };

@ -148,7 +149,7 @@ class CheckerCPU : public BaseCPU

    union Result {
        uint64_t integer;
-        float fp;
+//        float fp;
        double dbl;
    };

@ -269,7 +270,7 @@ class CheckerCPU : public BaseCPU
    {
        int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
        thread->setFloatReg(reg_idx, val);
-        result.fp = val;
+        result.dbl = (double)val;
    }

    void setFloatRegBits(const StaticInst *si, int idx, FloatRegBits val,
@ -318,7 +319,7 @@ class CheckerCPU : public BaseCPU
        return thread->setMiscRegWithEffect(misc_reg, val);
    }

-    void recordPCChange(uint64_t val) { changedPC = true; }
+    void recordPCChange(uint64_t val) { changedPC = true; newPC = val; }
    void recordNextPCChange(uint64_t val) { changedNextPC = true; }

    bool translateInstReq(Request *req);
@ -360,6 +361,7 @@ class CheckerCPU : public BaseCPU
    uint64_t newPC;
    bool changedNextPC;
    bool exitOnError;
+    bool updateOnError;
    bool warnOnlyOnLoadError;

    InstSeqNum youngestSN;
@ -376,7 +378,7 @@ class Checker : public CheckerCPU
 {
  public:
    Checker(Params *p)
-        : CheckerCPU(p)
+        : CheckerCPU(p), updateThisCycle(false), unverifiedInst(NULL)
    { }

    void switchOut();
@ -393,12 +395,19 @@ class Checker : public CheckerCPU
  private:
    void handleError(DynInstPtr &inst)
    {
-        if (exitOnError)
+        if (exitOnError) {
            dumpAndExit(inst);
+        } else if (updateOnError) {
+            updateThisCycle = true;
+        }
    }

    void dumpAndExit(DynInstPtr &inst);

+    bool updateThisCycle;
+
+    DynInstPtr unverifiedInst;
+
    std::list<DynInstPtr> instList;
    typedef typename std::list<DynInstPtr>::iterator InstListIt;
    void dumpInsts();
--- a/src/cpu/checker/cpu_impl.hh
+++ b/src/cpu/checker/cpu_impl.hh
@ -94,6 +94,8 @@ Checker<DynInstPtr>::verify(DynInstPtr &completed_inst)
        }
    }

+    unverifiedInst = inst;
+
    // Try to check all instructions that are completed, ending if we
    // run out of instructions to check or if an instruction is not
    // yet completed.
@ -171,7 +173,7 @@ Checker<DynInstPtr>::verify(DynInstPtr &completed_inst)
                thread->setPC(thread->readNextPC());
                thread->setNextPC(thread->readNextPC() + sizeof(MachInst));

-                return;
+                break;
            } else {
                // The instruction is carrying an ITB fault.  Handle
                // the fault and see if our results match the CPU on
@ -220,6 +222,7 @@ Checker<DynInstPtr>::verify(DynInstPtr &completed_inst)

            thread->funcExeInst++;

+            if (!inst->isUnverifiable())
                fault = curStaticInst->execute(this, NULL);

            // Checks to make sure instrution results are correct.
@ -289,6 +292,7 @@ Checker<DynInstPtr>::verify(DynInstPtr &completed_inst)
            break;
        }
    }
+    unverifiedInst = NULL;
 }

 template <class DynInstPtr>
@ -395,6 +399,23 @@ template <class DynInstPtr>
 void
 Checker<DynInstPtr>::validateState()
 {
+    if (updateThisCycle) {
+        warn("%lli: Instruction PC %#x results didn't match up, copying all "
+             "registers from main CPU", curTick, unverifiedInst->readPC());
+        // Heavy-weight copying of all registers
+        cpuXC->copyArchRegs(unverifiedInst->xcBase());
+        // Also advance the PC.  Hopefully no PC-based events happened.
+#if THE_ISA != MIPS_ISA
+        // go to the next instruction
+        cpuXC->setPC(cpuXC->readNextPC());
+        cpuXC->setNextPC(cpuXC->readNextPC() + sizeof(MachInst));
+#else
+        // go to the next instruction
+        cpuXC->setPC(cpuXC->readNextPC());
+        cpuXC->setNextPC(cpuXC->readNextNPC());
+        cpuXC->setNextNPC(cpuXC->readNextNPC() + sizeof(MachInst));
+#endif
+        updateThisCycle = false;
 }

 template <class DynInstPtr>
--- a/src/cpu/o3/alpha/cpu_builder.cc
+++ b/src/cpu/o3/alpha/cpu_builder.cc
@ -56,6 +56,7 @@ SimObjectParam<System *> system;
 Param<int> cpu_id;
 SimObjectParam<AlphaITB *> itb;
 SimObjectParam<AlphaDTB *> dtb;
+Param<Tick> profile;
 #else
 SimObjectVectorParam<Process *> workload;
 #endif // FULL_SYSTEM
@ -68,6 +69,8 @@ Param<Counter> max_insts_any_thread;
 Param<Counter> max_insts_all_threads;
 Param<Counter> max_loads_any_thread;
 Param<Counter> max_loads_all_threads;
+Param<Counter> stats_reset_inst;
+Param<Tick> progress_interval;

 Param<unsigned> cachePorts;

@ -162,6 +165,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(DerivO3CPU)
    INIT_PARAM(cpu_id, "processor ID"),
    INIT_PARAM(itb, "Instruction translation buffer"),
    INIT_PARAM(dtb, "Data translation buffer"),
+    INIT_PARAM(profile, ""),
 #else
    INIT_PARAM(workload, "Processes to run"),
 #endif // FULL_SYSTEM
@ -184,6 +188,10 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(DerivO3CPU)
                    "Terminate when all threads have reached this load"
                    "count",
                    0),
+    INIT_PARAM_DFLT(stats_reset_inst,
+                    "blah",
+                    0),
+    INIT_PARAM_DFLT(progress_interval, "Progress interval", 0),

    INIT_PARAM_DFLT(cachePorts, "Cache Ports", 200),

@ -305,6 +313,7 @@ CREATE_SIM_OBJECT(DerivO3CPU)
    params->cpu_id = cpu_id;
    params->itb = itb;
    params->dtb = dtb;
+    params->profile = profile;
 #else
    params->workload = workload;
 #endif // FULL_SYSTEM
@ -317,6 +326,8 @@ CREATE_SIM_OBJECT(DerivO3CPU)
    params->max_insts_all_threads = max_insts_all_threads;
    params->max_loads_any_thread = max_loads_any_thread;
    params->max_loads_all_threads = max_loads_all_threads;
+    params->stats_reset_inst = stats_reset_inst;
+    params->progress_interval = progress_interval;

    //
    // Caches
--- a/src/cpu/o3/checker_builder.cc
+++ b/src/cpu/o3/checker_builder.cc
@ -64,6 +64,8 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(O3Checker)
    Param<Counter> max_insts_all_threads;
    Param<Counter> max_loads_any_thread;
    Param<Counter> max_loads_all_threads;
+    Param<Counter> stats_reset_inst;
+    Param<Tick> progress_interval;

 #if FULL_SYSTEM
    SimObjectParam<AlphaITB *> itb;
@ -78,6 +80,7 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(O3Checker)

    Param<bool> defer_registration;
    Param<bool> exitOnError;
+    Param<bool> updateOnError;
    Param<bool> warnOnlyOnLoadError;
    Param<bool> function_trace;
    Param<Tick> function_trace_start;
@ -94,6 +97,9 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(O3Checker)
               "terminate when any thread reaches this load count"),
    INIT_PARAM(max_loads_all_threads,
               "terminate when all threads have reached this load count"),
+    INIT_PARAM(stats_reset_inst,
+               "blah"),
+    INIT_PARAM_DFLT(progress_interval, "CPU Progress Interval", 0),

 #if FULL_SYSTEM
    INIT_PARAM(itb, "Instruction TLB"),
@ -109,6 +115,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(O3Checker)

    INIT_PARAM(defer_registration, "defer system registration (for sampling)"),
    INIT_PARAM(exitOnError, "exit on error"),
+    INIT_PARAM(updateOnError, "Update the checker with the main CPU's state on error"),
    INIT_PARAM_DFLT(warnOnlyOnLoadError, "warn, but don't exit, if a load "
                    "result errors", false),
    INIT_PARAM(function_trace, "Enable function trace"),
@ -126,7 +133,9 @@ CREATE_SIM_OBJECT(O3Checker)
    params->max_insts_all_threads = 0;
    params->max_loads_any_thread = 0;
    params->max_loads_all_threads = 0;
+    params->stats_reset_inst = 0;
    params->exitOnError = exitOnError;
+    params->updateOnError = updateOnError;
    params->warnOnlyOnLoadError = warnOnlyOnLoadError;
    params->deferRegistration = defer_registration;
    params->functionTrace = function_trace;
@ -139,6 +148,10 @@ CREATE_SIM_OBJECT(O3Checker)
    temp = max_insts_all_threads;
    temp = max_loads_any_thread;
    temp = max_loads_all_threads;
+    temp = stats_reset_inst;
+    Tick temp2 = progress_interval;
+    params->progress_interval = 0;
+    temp2++;

 #if FULL_SYSTEM
    params->itb = itb;
--- a/src/cpu/o3/commit_impl.hh
+++ b/src/cpu/o3/commit_impl.hh
@ -1083,12 +1083,26 @@ DefaultCommit<Impl>::commitHead(DynInstPtr &head_inst, unsigned inst_num)

        // Generate trap squash event.
        generateTrapEvent(tid);
-
+//        warn("%lli fault (%d) handled @ PC %08p", curTick, inst_fault->name(), head_inst->readPC());
        return false;
    }

    updateComInstStats(head_inst);

+#if FULL_SYSTEM
+    if (thread[tid]->profile) {
+//        bool usermode =
+//            (cpu->readMiscReg(AlphaISA::IPR_DTB_CM, tid) & 0x18) != 0;
+//        thread[tid]->profilePC = usermode ? 1 : head_inst->readPC();
+        thread[tid]->profilePC = head_inst->readPC();
+        ProfileNode *node = thread[tid]->profile->consume(thread[tid]->getXCProxy(),
+                                                          head_inst->staticInst);
+
+        if (node)
+            thread[tid]->profileNode = node;
+    }
+#endif
+
    if (head_inst->traceData) {
        head_inst->traceData->setFetchSeq(head_inst->seqNum);
        head_inst->traceData->setCPSeq(thread[tid]->numInst);
@ -1102,6 +1116,9 @@ DefaultCommit<Impl>::commitHead(DynInstPtr &head_inst, unsigned inst_num)
                                 head_inst->renamedDestRegIdx(i));
    }

+    if (head_inst->isCopy())
+        panic("Should not commit any copy instructions!");
+
    // Finally clear the head ROB entry.
    rob->retireHead(tid);

--- a/src/cpu/o3/cpu.cc
+++ b/src/cpu/o3/cpu.cc
@ -33,6 +33,7 @@
 #include "config/use_checker.hh"

 #if FULL_SYSTEM
+#include "cpu/quiesce_event.hh"
 #include "sim/system.hh"
 #else
 #include "sim/process.hh"
@ -793,6 +794,8 @@ template <class Impl>
 unsigned int
 FullO3CPU<Impl>::drain(Event *drain_event)
 {
+    DPRINTF(O3CPU, "Switching out\n");
+    BaseCPU::switchOut(_sampler);
    drainCount = 0;
    fetch.drain();
    decode.drain();
@ -863,6 +866,7 @@ FullO3CPU<Impl>::switchOut()
 {
    fetch.switchOut();
    rename.switchOut();
+    iew.switchOut();
    commit.switchOut();
    instList.clear();
    while (!removeList.empty()) {
@ -930,6 +934,45 @@ FullO3CPU<Impl>::takeOverFrom(BaseCPU *oldCPU)
        tickEvent.schedule(curTick);
 }

+template <class Impl>
+void
+FullO3CPU<Impl>::serialize(std::ostream &os)
+{
+    BaseCPU::serialize(os);
+    nameOut(os, csprintf("%s.tickEvent", name()));
+    tickEvent.serialize(os);
+
+    // Use SimpleThread's ability to checkpoint to make it easier to
+    // write out the registers.  Also make this static so it doesn't
+    // get instantiated multiple times (causes a panic in statistics).
+    static CPUExecContext temp;
+
+    for (int i = 0; i < thread.size(); i++) {
+        nameOut(os, csprintf("%s.xc.%i", name(), i));
+        temp.copyXC(thread[i]->getXCProxy());
+        temp.serialize(os);
+    }
+}
+
+template <class Impl>
+void
+FullO3CPU<Impl>::unserialize(Checkpoint *cp, const std::string &section)
+{
+    BaseCPU::unserialize(cp, section);
+    tickEvent.unserialize(cp, csprintf("%s.tickEvent", section));
+
+    // Use SimpleThread's ability to checkpoint to make it easier to
+    // read in the registers.  Also make this static so it doesn't
+    // get instantiated multiple times (causes a panic in statistics).
+    static CPUExecContext temp;
+
+    for (int i = 0; i < thread.size(); i++) {
+        temp.copyXC(thread[i]->getXCProxy());
+        temp.unserialize(cp, csprintf("%s.xc.%i", section, i));
+        thread[i]->getXCProxy()->copyArchRegs(temp.getProxy());
+    }
+}
+
 template <class Impl>
 uint64_t
 FullO3CPU<Impl>::readIntReg(int reg_idx)
--- a/src/cpu/o3/fetch_impl.hh
+++ b/src/cpu/o3/fetch_impl.hh
@ -442,6 +442,7 @@ DefaultFetch<Impl>::takeOverFrom()
    wroteToTimeBuffer = false;
    _status = Inactive;
    switchedOut = false;
+    interruptPending = false;
    branchPred.takeOverFrom();
 }

@ -563,7 +564,7 @@ DefaultFetch<Impl>::fetchCacheLine(Addr fetch_PC, Fault &ret_fault, unsigned tid
    unsigned flags = 0;
 #endif // FULL_SYSTEM

-    if (cacheBlocked || (interruptPending && flags == 0)) {
+    if (cacheBlocked || isSwitchedOut() || (interruptPending && flags == 0)) {
        // Hold off fetch from getting new instructions when:
        // Cache is blocked, or
        // while an interrupt is pending and we're not in PAL mode, or
@ -1152,8 +1153,8 @@ DefaultFetch<Impl>::fetch(bool &status_change)
            fetch_PC = next_PC;

            if (instruction->isQuiesce()) {
-                warn("cycle %lli: Quiesce instruction encountered, halting fetch!",
-                     curTick);
+//                warn("%lli: Quiesce instruction encountered, halting fetch!",
+//                     curTick);
                fetchStatus[tid] = QuiescePending;
                ++numInst;
                status_change = true;
@ -1268,7 +1269,7 @@ DefaultFetch<Impl>::fetch(bool &status_change)
        fetchStatus[tid] = TrapPending;
        status_change = true;

-        warn("cycle %lli: fault (%s) detected @ PC %08p", curTick, fault->name(), PC[tid]);
+//        warn("%lli fault (%d) detected @ PC %08p", curTick, fault, PC[tid]);
 #else // !FULL_SYSTEM
        warn("cycle %lli: fault (%s) detected @ PC %08p", curTick, fault->name(), PC[tid]);
 #endif // FULL_SYSTEM
--- a/src/cpu/o3/iew.hh
+++ b/src/cpu/o3/iew.hh
@ -216,6 +216,7 @@ class DefaultIEW
        if (++wbOutstanding == wbMax)
            ableToIssue = false;
        DPRINTF(IEW, "wbOutstanding: %i\n", wbOutstanding);
+        assert(wbOutstanding <= wbMax);
 #ifdef DEBUG
        wbList.insert(sn);
 #endif
@ -226,6 +227,7 @@ class DefaultIEW
        if (wbOutstanding-- == wbMax)
            ableToIssue = true;
        DPRINTF(IEW, "wbOutstanding: %i\n", wbOutstanding);
+        assert(wbOutstanding >= 0);
 #ifdef DEBUG
        assert(wbList.find(sn) != wbList.end());
        wbList.erase(sn);
@ -450,7 +452,9 @@ class DefaultIEW
    unsigned wbCycle;

    /** Number of instructions in flight that will writeback. */
-    unsigned wbOutstanding;
+
+    /** Number of instructions in flight that will writeback. */
+    int wbOutstanding;

    /** Writeback width. */
    unsigned wbWidth;
@ -507,6 +511,8 @@ class DefaultIEW
    Stats::Scalar<> iewExecutedInsts;
    /** Stat for total number of executed load instructions. */
    Stats::Vector<> iewExecLoadInsts;
+    /** Stat for total number of executed store instructions. */
+//    Stats::Scalar<> iewExecStoreInsts;
    /** Stat for total number of squashed instructions skipped at execute. */
    Stats::Scalar<> iewExecSquashedInsts;
    /** Number of executed software prefetches. */
--- a/src/cpu/o3/iew_impl.hh
+++ b/src/cpu/o3/iew_impl.hh
@ -162,17 +162,17 @@ DefaultIEW<Impl>::regStats()
    branchMispredicts = predictedTakenIncorrect + predictedNotTakenIncorrect;

    iewExecutedInsts
-        .name(name() + ".EXEC:insts")
+        .name(name() + ".iewExecutedInsts")
        .desc("Number of executed instructions");

    iewExecLoadInsts
        .init(cpu->number_of_threads)
-        .name(name() + ".EXEC:loads")
+        .name(name() + ".iewExecLoadInsts")
        .desc("Number of load instructions executed")
        .flags(total);

    iewExecSquashedInsts
-        .name(name() + ".EXEC:squashedInsts")
+        .name(name() + ".iewExecSquashedInsts")
        .desc("Number of squashed instructions skipped in execute");

    iewExecutedSwp
@ -372,6 +372,8 @@ DefaultIEW<Impl>::switchOut()
 {
    // Clear any state.
    switchedOut = true;
+    assert(insts[0].empty());
+    assert(skidBuffer[0].empty());

    instQueue.switchOut();
    ldstQueue.switchOut();
@ -410,7 +412,6 @@ DefaultIEW<Impl>::takeOverFrom()

    updateLSQNextCycle = false;

-    // @todo: Fix hardcoded number
    for (int i = 0; i < issueToExecQueue.getSize(); ++i) {
        issueToExecQueue.advance();
    }
@ -611,9 +612,11 @@ DefaultIEW<Impl>::instToCommit(DynInstPtr &inst)
            wbNumInst = 0;
        }

-        assert((wbCycle * wbWidth + wbNumInst) < wbMax);
+        assert((wbCycle * wbWidth + wbNumInst) <= wbMax);
    }

+    DPRINTF(IEW, "Current wb cycle: %i, width: %i, numInst: %i\nwbActual:%i\n",
+            wbCycle, wbWidth, wbNumInst, wbCycle * wbWidth + wbNumInst);
    // Add finished instruction to queue to commit.
    (*iewQueue)[wbCycle].insts[wbNumInst] = inst;
    (*iewQueue)[wbCycle].size++;
@ -901,6 +904,22 @@ DefaultIEW<Impl>::emptyRenameInsts(unsigned tid)
    }
 }

+template <class Impl>
+void
+DefaultIEW<Impl>::emptyRenameInsts(unsigned tid)
+{
+    while (!insts[tid].empty()) {
+        if (insts[tid].front()->isLoad() ||
+            insts[tid].front()->isStore() ) {
+            toRename->iewInfo[tid].dispatchedToLSQ++;
+        }
+
+        toRename->iewInfo[tid].dispatched++;
+
+        insts[tid].pop();
+    }
+}
+
 template <class Impl>
 void
 DefaultIEW<Impl>::wakeCPU()
@ -1273,13 +1292,23 @@ DefaultIEW<Impl>::executeInsts()
                // event adds the instruction to the queue to commit
                fault = ldstQueue.executeLoad(inst);
            } else if (inst->isStore()) {
-                ldstQueue.executeStore(inst);
+                fault = ldstQueue.executeStore(inst);

                // If the store had a fault then it may not have a mem req
-                if (inst->req && !(inst->req->getFlags() & LOCKED)) {
+                if (!inst->isStoreConditional() && fault == NoFault) {
                    inst->setExecuted();

                    instToCommit(inst);
+                } else if (fault != NoFault) {
+                    // If the instruction faulted, then we need to send it along to commit
+                    // without the instruction completing.
+
+                    // Send this instruction to commit, also make sure iew stage
+                    // realizes there is activity.
+                    inst->setExecuted();
+
+                    instToCommit(inst);
+                    activityThisCycle();
                }

                // Store conditionals will mark themselves as
@ -1404,7 +1433,7 @@ DefaultIEW<Impl>::writebackInsts()
        // E.g. Uncached loads have not actually executed when they
        // are first sent to commit.  Instead commit must tell the LSQ
        // when it's ready to execute the uncached load.
-        if (!inst->isSquashed() && inst->isExecuted()) {
+        if (!inst->isSquashed() && inst->isExecuted() && inst->getFault() == NoFault) {
            int dependents = instQueue.wakeDependents(inst);

            for (int i = 0; i < inst->numDestRegs(); i++) {
--- a/src/cpu/o3/inst_queue.hh
+++ b/src/cpu/o3/inst_queue.hh
@ -479,13 +479,13 @@ class InstructionQueue
    /** Distribution of number of instructions in the queue.
     * @todo: Need to create struct to track the entry time for each
     * instruction. */
-    Stats::VectorDistribution<> queueResDist;
+//    Stats::VectorDistribution<> queueResDist;
    /** Distribution of the number of instructions issued. */
    Stats::Distribution<> numIssuedDist;
    /** Distribution of the cycles it takes to issue an instruction.
     * @todo: Need to create struct to track the ready time for each
     * instruction. */
-    Stats::VectorDistribution<> issueDelayDist;
+//    Stats::VectorDistribution<> issueDelayDist;

    /** Number of times an instruction could not be issued because a
     * FU was busy.
--- a/src/cpu/o3/inst_queue_impl.hh
+++ b/src/cpu/o3/inst_queue_impl.hh
@ -230,7 +230,7 @@ InstructionQueue<Impl>::regStats()
        .name(name() + ".iqSquashedNonSpecRemoved")
        .desc("Number of squashed non-spec instructions that were removed")
        .prereq(iqSquashedNonSpecRemoved);
-
+/*
    queueResDist
        .init(Num_OpClasses, 0, 99, 2)
        .name(name() + ".IQ:residence:")
@ -240,6 +240,7 @@ InstructionQueue<Impl>::regStats()
    for (int i = 0; i < Num_OpClasses; ++i) {
        queueResDist.subname(i, opClassStrings[i]);
    }
+*/
    numIssuedDist
        .init(0,totalWidth,1)
        .name(name() + ".ISSUE:issued_per_cycle")
@ -268,7 +269,7 @@ InstructionQueue<Impl>::regStats()
    //
    //  How long did instructions for a particular FU type wait prior to issue
    //
-
+/*
    issueDelayDist
        .init(Num_OpClasses,0,99,2)
        .name(name() + ".ISSUE:")
@ -281,7 +282,7 @@ InstructionQueue<Impl>::regStats()
        subname << opClassStrings[i] << "_delay";
        issueDelayDist.subname(i, subname.str());
    }
-
+*/
    issueRate
        .name(name() + ".ISSUE:rate")
        .desc("Inst issue rate")
@ -385,8 +386,16 @@ template <class Impl>
 void
 InstructionQueue<Impl>::switchOut()
 {
+/*
+    if (!instList[0].empty() || (numEntries != freeEntries) ||
+        !readyInsts[0].empty() || !nonSpecInsts.empty() || !listOrder.empty()) {
+        dumpInsts();
+//        assert(0);
+    }
+*/
    resetState();
    dependGraph.reset();
+    instsToExecute.clear();
    switchedOut = true;
    for (int i = 0; i < numThreads; ++i) {
        memDepUnit[i].switchOut();
@ -642,9 +651,12 @@ template <class Impl>
 void
 InstructionQueue<Impl>::processFUCompletion(DynInstPtr &inst, int fu_idx)
 {
+    DPRINTF(IQ, "Processing FU completion [sn:%lli]\n", inst->seqNum);
    // The CPU could have been sleeping until this op completed (*extremely*
    // long latency op).  Wake it if it was.  This may be overkill.
    if (isSwitchedOut()) {
+        DPRINTF(IQ, "FU completion not processed, IQ is switched out [sn:%lli]\n",
+                inst->seqNum);
        return;
    }

@ -1036,6 +1048,10 @@ InstructionQueue<Impl>::doSquash(unsigned tid)
            (squashed_inst->isMemRef() &&
             !squashed_inst->memOpDone)) {

+            DPRINTF(IQ, "[tid:%i]: Instruction [sn:%lli] PC %#x "
+                    "squashed.\n",
+                    tid, squashed_inst->seqNum, squashed_inst->readPC());
+
            // Remove the instruction from the dependency list.
            if (!squashed_inst->isNonSpeculative() &&
                !squashed_inst->isStoreConditional() &&
@ -1066,7 +1082,7 @@ InstructionQueue<Impl>::doSquash(unsigned tid)

                    ++iqSquashedOperandsExamined;
                }
-            } else {
+            } else if (!squashed_inst->isStoreConditional() || !squashed_inst->isCompleted()) {
                NonSpecMapIt ns_inst_it =
                    nonSpecInsts.find(squashed_inst->seqNum);
                assert(ns_inst_it != nonSpecInsts.end());
@ -1093,10 +1109,6 @@ InstructionQueue<Impl>::doSquash(unsigned tid)
            count[squashed_inst->threadNumber]--;

            ++freeEntries;
-
-            DPRINTF(IQ, "[tid:%i]: Instruction [sn:%lli] PC %#x "
-                    "squashed.\n",
-                    tid, squashed_inst->seqNum, squashed_inst->readPC());
        }

        instList[tid].erase(squash_it--);
--- a/src/cpu/o3/lsq_impl.hh
+++ b/src/cpu/o3/lsq_impl.hh
@ -165,6 +165,16 @@ LSQ<Impl>::regStats()
    }
 }

+template<class Impl>
+void
+LSQ<Impl>::regStats()
+{
+    //Initialize LSQs
+    for (int tid=0; tid < numThreads; tid++) {
+        thread[tid].regStats();
+    }
+}
+
 template<class Impl>
 void
 LSQ<Impl>::setActiveThreads(std::list<unsigned> *at_ptr)
--- a/src/cpu/o3/lsq_unit.hh
+++ b/src/cpu/o3/lsq_unit.hh
@ -407,20 +407,9 @@ class LSQUnit {
    // Will also need how many read/write ports the Dcache has.  Or keep track
    // of that in stage that is one level up, and only call executeLoad/Store
    // the appropriate number of times.
-
    /** Total number of loads forwaded from LSQ stores. */
    Stats::Scalar<> lsqForwLoads;

-    /** Total number of loads ignored due to invalid addresses. */
-    Stats::Scalar<> invAddrLoads;
-
-    /** Total number of squashed loads. */
-    Stats::Scalar<> lsqSquashedLoads;
-
-    /** Total number of responses from the memory system that are
-     * ignored due to the instruction already being squashed. */
-    Stats::Scalar<> lsqIgnoredResponses;
-
    /** Total number of squashed stores. */
    Stats::Scalar<> lsqSquashedStores;

--- a/src/cpu/o3/lsq_unit_impl.hh
+++ b/src/cpu/o3/lsq_unit_impl.hh
@ -180,6 +180,10 @@ LSQUnit<Impl>::regStats()
        .name(name() + ".ignoredResponses")
        .desc("Number of memory responses ignored because the instruction is squashed");

+    lsqMemOrderViolation
+        .name(name() + ".memOrderViolation")
+        .desc("Number of memory ordering violations");
+
    lsqSquashedStores
        .name(name() + ".squashedStores")
        .desc("Number of stores squashed");
@ -220,8 +224,10 @@ void
 LSQUnit<Impl>::switchOut()
 {
    switchedOut = true;
-    for (int i = 0; i < loadQueue.size(); ++i)
+    for (int i = 0; i < loadQueue.size(); ++i) {
+        assert(!loadQueue[i]);
        loadQueue[i] = NULL;
+    }

    assert(storesToWB == 0);
 }
@ -408,6 +414,11 @@ LSQUnit<Impl>::executeLoad(DynInstPtr &inst)
    if (load_fault != NoFault) {
        // Send this instruction to commit, also make sure iew stage
        // realizes there is activity.
+        // Mark it as executed unless it is an uncached load that
+        // needs to hit the head of commit.
+        if (!(inst->req->flags & UNCACHEABLE) || inst->isAtCommit()) {
+            inst->setExecuted();
+        }
        iewStage->instToCommit(inst);
        iewStage->activityThisCycle();
    }
@ -467,6 +478,7 @@ LSQUnit<Impl>::executeStore(DynInstPtr &store_inst)
                // A load incorrectly passed this store.  Squash and refetch.
                // For now return a fault to show that it was unsuccessful.
                memDepViolator = loadQueue[load_idx];
+                ++lsqMemOrderViolation;

                return genMachineCheckFault();
            }
--- a/src/cpu/o3/mem_dep_unit_impl.hh
+++ b/src/cpu/o3/mem_dep_unit_impl.hh
@ -109,6 +109,9 @@ template <class MemDepPred, class Impl>
 void
 MemDepUnit<MemDepPred, Impl>::switchOut()
 {
+    assert(instList[0].empty());
+    assert(instsToReplay.empty());
+    assert(memDepHash.empty());
    // Clear any state.
    for (int i = 0; i < Impl::MaxThreads; ++i) {
        instList[i].clear();
--- a/src/cpu/o3/rename.hh
+++ b/src/cpu/o3/rename.hh
@ -417,6 +417,8 @@ class DefaultRename
    /** The maximum skid buffer size. */
    unsigned skidBufferMax;

+    PhysRegIndex maxPhysicalRegs;
+
    /** Enum to record the source of a structure full stall.  Can come from
     * either ROB, IQ, LSQ, and it is priortized in that order.
     */
--- a/src/cpu/o3/rename_impl.hh
+++ b/src/cpu/o3/rename_impl.hh
@ -41,7 +41,8 @@ DefaultRename<Impl>::DefaultRename(Params *params)
      commitToRenameDelay(params->commitToRenameDelay),
      renameWidth(params->renameWidth),
      commitWidth(params->commitWidth),
-      numThreads(params->numberOfThreads)
+      numThreads(params->numberOfThreads),
+      maxPhysicalRegs(params->numPhysIntRegs + params->numPhysFloatRegs)
 {
    _status = Inactive;

@ -286,6 +287,11 @@ DefaultRename<Impl>::switchOut()
            // Put the renamed physical register back on the free list.
            freeList->addReg(hb_it->newPhysReg);

+            // Be sure to mark its register as ready if it's a misc register.
+            if (hb_it->newPhysReg >= maxPhysicalRegs) {
+                scoreboard->setReg(hb_it->newPhysReg);
+            }
+
            historyBuffer[i].erase(hb_it++);
        }
        insts[i].clear();
@ -889,6 +895,11 @@ DefaultRename<Impl>::doSquash(const InstSeqNum &squashed_seq_num, unsigned tid)
        // Put the renamed physical register back on the free list.
        freeList->addReg(hb_it->newPhysReg);

+        // Be sure to mark its register as ready if it's a misc register.
+        if (hb_it->newPhysReg >= maxPhysicalRegs) {
+            scoreboard->setReg(hb_it->newPhysReg);
+        }
+
        historyBuffer[tid].erase(hb_it++);

        ++renameUndoneMaps;
--- a/src/cpu/o3/thread_state.hh
+++ b/src/cpu/o3/thread_state.hh
@ -31,8 +31,11 @@
 #ifndef __CPU_O3_THREAD_STATE_HH__
 #define __CPU_O3_THREAD_STATE_HH__

+#include "base/callback.hh"
+#include "base/output.hh"
 #include "cpu/thread_context.hh"
 #include "cpu/thread_state.hh"
+#include "sim/sim_exit.hh"

 class Event;
 class Process;
@ -75,8 +78,22 @@ struct O3ThreadState : public ThreadState {
 #if FULL_SYSTEM
    O3ThreadState(O3CPU *_cpu, int _thread_num)
        : ThreadState(-1, _thread_num),
-          inSyscall(0), trapPending(0)
-    { }
+          cpu(_cpu), inSyscall(0), trapPending(0)
+    {
+        if (cpu->params->profile) {
+            profile = new FunctionProfile(cpu->params->system->kernelSymtab);
+            Callback *cb =
+                new MakeCallback<O3ThreadState,
+                &O3ThreadState::dumpFuncProfile>(this);
+            registerExitCallback(cb);
+        }
+
+        // let's fill with a dummy node for now so we don't get a segfault
+        // on the first cycle when there's no node available.
+        static ProfileNode dummyNode;
+        profileNode = &dummyNode;
+        profilePC = 3;
+    }
 #else
    O3ThreadState(O3CPU *_cpu, int _thread_num, Process *_process, int _asid,
                  MemObject *mem)
@ -95,6 +112,14 @@ struct O3ThreadState : public ThreadState {
    /** Handles the syscall. */
    void syscall(int64_t callnum) { process->syscall(callnum, tc); }
 #endif
+
+#if FULL_SYSTEM
+    void dumpFuncProfile()
+    {
+        std::ostream *os = simout.create(csprintf("profile.%s.dat", cpu->name()));
+        profile->dump(xcProxy, *os);
+    }
+#endif
 };

 #endif // __CPU_O3_THREAD_STATE_HH__
--- a/src/cpu/o3/tournament_pred.cc
+++ b/src/cpu/o3/tournament_pred.cc
@ -62,6 +62,8 @@ TournamentBP::TournamentBP(unsigned _localPredictorSize,
    for (int i = 0; i < localPredictorSize; ++i)
        localCtrs[i].setBits(localCtrBits);

+    localPredictorMask = floorPow2(localPredictorSize) - 1;
+
    if (!isPowerOf2(localHistoryTableSize)) {
        fatal("Invalid local history table size!\n");
    }
@ -158,7 +160,7 @@ TournamentBP::lookup(Addr &branch_addr, void * &bp_history)
    //Lookup in the local predictor to get its branch prediction
    local_history_idx = calcLocHistIdx(branch_addr);
    local_predictor_idx = localHistoryTable[local_history_idx]
-        & localHistoryMask;
+        & localPredictorMask;
    local_prediction = localCtrs[local_predictor_idx].read() > threshold;

    //Lookup in the global predictor to get its branch prediction
@ -176,7 +178,8 @@ TournamentBP::lookup(Addr &branch_addr, void * &bp_history)
    bp_history = (void *)history;

    assert(globalHistory < globalPredictorSize &&
-           local_history_idx < localPredictorSize);
+           local_history_idx < localHistoryTableSize &&
+           local_predictor_idx < localPredictorSize);

    // Commented code is for doing speculative update of counters and
    // all histories.
@ -234,7 +237,7 @@ TournamentBP::update(Addr &branch_addr, bool taken, void *bp_history)
    // Get the local predictor's current prediction
    local_history_idx = calcLocHistIdx(branch_addr);
    local_predictor_hist = localHistoryTable[local_history_idx];
-    local_predictor_idx = local_predictor_hist & localHistoryMask;
+    local_predictor_idx = local_predictor_hist & localPredictorMask;

    // Update the choice predictor to tell it which one was correct if
    // there was a prediction.
@ -256,6 +259,7 @@ TournamentBP::update(Addr &branch_addr, bool taken, void *bp_history)
    }

    assert(globalHistory < globalPredictorSize &&
+           local_history_idx < localHistoryTableSize &&
           local_predictor_idx < localPredictorSize);

    // Update the counters and local history with the proper
--- a/src/cpu/o3/tournament_pred.hh
+++ b/src/cpu/o3/tournament_pred.hh
@ -159,6 +159,9 @@ class TournamentBP
    /** Size of the local predictor. */
    unsigned localPredictorSize;

+    /** Mask to get the proper index bits into the predictor. */
+    unsigned localPredictorMask;
+
    /** Number of bits of the local predictor's counters. */
    unsigned localCtrBits;

--- a/src/cpu/ozone/checker_builder.cc
+++ b/src/cpu/ozone/checker_builder.cc
@ -65,6 +65,8 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(OzoneChecker)
    Param<Counter> max_insts_all_threads;
    Param<Counter> max_loads_any_thread;
    Param<Counter> max_loads_all_threads;
+    Param<Counter> stats_reset_inst;
+    Param<Tick> progress_interval;

 #if FULL_SYSTEM
    SimObjectParam<AlphaITB *> itb;
@ -79,6 +81,7 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(OzoneChecker)

    Param<bool> defer_registration;
    Param<bool> exitOnError;
+    Param<bool> updateOnError;
    Param<bool> warnOnlyOnLoadError;
    Param<bool> function_trace;
    Param<Tick> function_trace_start;
@ -95,6 +98,9 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(OzoneChecker)
               "terminate when any thread reaches this load count"),
    INIT_PARAM(max_loads_all_threads,
               "terminate when all threads have reached this load count"),
+    INIT_PARAM(stats_reset_inst,
+               "blah"),
+    INIT_PARAM_DFLT(progress_interval, "CPU Progress Interval", 0),

 #if FULL_SYSTEM
    INIT_PARAM(itb, "Instruction TLB"),
@ -110,6 +116,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(OzoneChecker)

    INIT_PARAM(defer_registration, "defer system registration (for sampling)"),
    INIT_PARAM(exitOnError, "exit on error"),
+    INIT_PARAM(updateOnError, "Update the checker with the main CPU's state on error"),
    INIT_PARAM_DFLT(warnOnlyOnLoadError, "warn, but don't exit, if a load "
                    "result errors", false),
    INIT_PARAM(function_trace, "Enable function trace"),
@ -127,7 +134,9 @@ CREATE_SIM_OBJECT(OzoneChecker)
    params->max_insts_all_threads = 0;
    params->max_loads_any_thread = 0;
    params->max_loads_all_threads = 0;
+    params->stats_reset_inst = 0;
    params->exitOnError = exitOnError;
+    params->updateOnError = updateOnError;
    params->warnOnlyOnLoadError = warnOnlyOnLoadError;
    params->deferRegistration = defer_registration;
    params->functionTrace = function_trace;
@ -140,6 +149,10 @@ CREATE_SIM_OBJECT(OzoneChecker)
    temp = max_insts_all_threads;
    temp = max_loads_any_thread;
    temp = max_loads_all_threads;
+    temp = stats_reset_inst;
+    Tick temp2 = progress_interval;
+    temp2++;
+    params->progress_interval = 0;

 #if FULL_SYSTEM
    params->itb = itb;
--- a/src/cpu/ozone/cpu.hh
+++ b/src/cpu/ozone/cpu.hh
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005 The Regents of The University of Michigan
+ * Copyright (c) 2006 The Regents of The University of Michigan
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
@ -81,13 +81,13 @@ template <class>
 class Checker;

 /**
- * Declaration of Out-of-Order CPU class.  Basically it is a SimpleCPU with
- * simple out-of-order capabilities added to it.  It is still a 1 CPI machine
- * (?), but is capable of handling cache misses.  Basically it models having
- * a ROB/IQ by only allowing a certain amount of instructions to execute while
- * the cache miss is outstanding.
+ * Light weight out of order CPU model that approximates an out of
+ * order CPU.  It is separated into a front end and a back end, with
+ * the template parameter Impl describing the classes used for each.
+ * The goal is to be able to specify through the Impl the class to use
+ * for the front end and back end, with different classes used to
+ * model different levels of detail.
 */
-
 template <class Impl>
 class OzoneCPU : public BaseCPU
 {
@ -273,6 +273,7 @@ class OzoneCPU : public BaseCPU
    typedef OzoneThreadState<Impl> ImplState;

  private:
+    // Committed thread state for the OzoneCPU.
    OzoneThreadState<Impl> thread;

  public:
@ -310,12 +311,6 @@ class OzoneCPU : public BaseCPU
            tickEvent.squash();
    }

-  private:
-    Trace::InstRecord *traceData;
-
-    template<typename T>
-    void trace_data(T data);
-
  public:
    enum Status {
        Running,
@ -326,8 +321,6 @@ class OzoneCPU : public BaseCPU
    Status _status;

  public:
-    bool checkInterrupts;
-
    void post_interrupt(int int_num, int index);

    void zero_fill_64(Addr addr) {
@ -379,6 +372,7 @@ class OzoneCPU : public BaseCPU
    FrontEnd *frontEnd;

    BackEnd *backEnd;
+
  private:
    Status status() const { return _status; }
    void setStatus(Status new_status) { _status = new_status; }
@ -410,12 +404,11 @@ class OzoneCPU : public BaseCPU
    // number of idle cycles
    Stats::Average<> notIdleFraction;
    Stats::Formula idleFraction;
-  public:

+  public:
    virtual void serialize(std::ostream &os);
    virtual void unserialize(Checkpoint *cp, const std::string &section);

-
 #if FULL_SYSTEM
    /** Translates instruction requestion. */
    Fault translateInstReq(RequestPtr &req, OzoneThreadState<Impl> *thread)
@ -582,12 +575,9 @@ class OzoneCPU : public BaseCPU

    Fault copy(Addr dest);

-    InstSeqNum globalSeqNum;
-
  public:
    void squashFromTC();

-    // @todo: This can be a useful debug function.  Implement it.
    void dumpInsts() { frontEnd->dumpInsts(); }

 #if FULL_SYSTEM
@ -605,7 +595,6 @@ class OzoneCPU : public BaseCPU

    ThreadContext *tcBase() { return tc; }

-    bool decoupledFrontEnd;
    struct CommStruct {
        InstSeqNum doneSeqNum;
        InstSeqNum nonSpecSeqNum;
@ -614,8 +603,13 @@ class OzoneCPU : public BaseCPU

        bool stall;
    };
+
+    InstSeqNum globalSeqNum;
+
    TimeBuffer<CommStruct> comm;

+    bool decoupledFrontEnd;
+
    bool lockFlag;

    Stats::Scalar<> quiesceCycles;
--- a/src/cpu/ozone/cpu_builder.cc
+++ b/src/cpu/ozone/cpu_builder.cc
@ -63,6 +63,7 @@ SimObjectParam<System *> system;
 Param<int> cpu_id;
 SimObjectParam<AlphaITB *> itb;
 SimObjectParam<AlphaDTB *> dtb;
+Param<Tick> profile;
 #else
 SimObjectVectorParam<Process *> workload;
 //SimObjectParam<PageTable *> page_table;
@ -76,16 +77,19 @@ Param<Counter> max_insts_any_thread;
 Param<Counter> max_insts_all_threads;
 Param<Counter> max_loads_any_thread;
 Param<Counter> max_loads_all_threads;
+Param<Counter> stats_reset_inst;
+Param<Tick> progress_interval;

 //SimObjectParam<BaseCache *> icache;
 //SimObjectParam<BaseCache *> dcache;

 Param<unsigned> cachePorts;
 Param<unsigned> width;
+Param<unsigned> frontEndLatency;
 Param<unsigned> frontEndWidth;
+Param<unsigned> backEndLatency;
 Param<unsigned> backEndWidth;
 Param<unsigned> backEndSquashLatency;
-Param<unsigned> backEndLatency;
 Param<unsigned> maxInstBufferSize;
 Param<unsigned> numPhysicalRegs;
 Param<unsigned> maxOutstandingMemOps;
@ -140,6 +144,7 @@ Param<unsigned> RASSize;

 Param<unsigned> LQEntries;
 Param<unsigned> SQEntries;
+Param<bool> lsqLimits;
 Param<unsigned> LFSTSize;
 Param<unsigned> SSITSize;

@ -181,6 +186,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(DerivOzoneCPU)
    INIT_PARAM(cpu_id, "processor ID"),
    INIT_PARAM(itb, "Instruction translation buffer"),
    INIT_PARAM(dtb, "Data translation buffer"),
+    INIT_PARAM(profile, ""),
 #else
    INIT_PARAM(workload, "Processes to run"),
 //    INIT_PARAM(page_table, "Page table"),
@ -204,16 +210,21 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(DerivOzoneCPU)
                    "Terminate when all threads have reached this load"
                    "count",
                    0),
+    INIT_PARAM_DFLT(stats_reset_inst,
+                    "blah",
+                    0),
+    INIT_PARAM_DFLT(progress_interval, "Progress interval", 0),

 //    INIT_PARAM_DFLT(icache, "L1 instruction cache", NULL),
 //    INIT_PARAM_DFLT(dcache, "L1 data cache", NULL),

    INIT_PARAM_DFLT(cachePorts, "Cache Ports", 200),
    INIT_PARAM_DFLT(width, "Width", 1),
+    INIT_PARAM_DFLT(frontEndLatency, "Front end latency", 1),
    INIT_PARAM_DFLT(frontEndWidth, "Front end width", 1),
+    INIT_PARAM_DFLT(backEndLatency, "Back end latency", 1),
    INIT_PARAM_DFLT(backEndWidth, "Back end width", 1),
    INIT_PARAM_DFLT(backEndSquashLatency, "Back end squash latency", 1),
-    INIT_PARAM_DFLT(backEndLatency, "Back end latency", 1),
    INIT_PARAM_DFLT(maxInstBufferSize, "Maximum instruction buffer size", 16),
    INIT_PARAM(numPhysicalRegs, "Number of physical registers"),
    INIT_PARAM_DFLT(maxOutstandingMemOps, "Maximum outstanding memory operations", 4),
@ -274,6 +285,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(DerivOzoneCPU)

    INIT_PARAM(LQEntries, "Number of load queue entries"),
    INIT_PARAM(SQEntries, "Number of store queue entries"),
+    INIT_PARAM_DFLT(lsqLimits, "LSQ size limits dispatch", true),
    INIT_PARAM(LFSTSize, "Last fetched store table size"),
    INIT_PARAM(SSITSize, "Store set ID table size"),

@ -336,6 +348,7 @@ CREATE_SIM_OBJECT(DerivOzoneCPU)
    params->cpu_id = cpu_id;
    params->itb = itb;
    params->dtb = dtb;
+    params->profile = profile;
 #else
    params->workload = workload;
 //    params->pTable = page_table;
@ -347,6 +360,8 @@ CREATE_SIM_OBJECT(DerivOzoneCPU)
    params->max_insts_all_threads = max_insts_all_threads;
    params->max_loads_any_thread = max_loads_any_thread;
    params->max_loads_all_threads = max_loads_all_threads;
+    params->stats_reset_inst = stats_reset_inst;
+    params->progress_interval = progress_interval;

    //
    // Caches
@ -357,6 +372,7 @@ CREATE_SIM_OBJECT(DerivOzoneCPU)

    params->width = width;
    params->frontEndWidth = frontEndWidth;
+    params->frontEndLatency = frontEndLatency;
    params->backEndWidth = backEndWidth;
    params->backEndSquashLatency = backEndSquashLatency;
    params->backEndLatency = backEndLatency;
@ -414,6 +430,7 @@ CREATE_SIM_OBJECT(DerivOzoneCPU)

    params->LQEntries = LQEntries;
    params->SQEntries = SQEntries;
+    params->lsqLimits = lsqLimits;

    params->SSITSize = SSITSize;
    params->LFSTSize = LFSTSize;
--- a/src/cpu/ozone/cpu_impl.hh
+++ b/src/cpu/ozone/cpu_impl.hh
@ -50,7 +50,6 @@
 #include "arch/alpha/types.hh"
 #include "arch/vtophys.hh"
 #include "base/callback.hh"
-//#include "base/remote_gdb.hh"
 #include "cpu/profile.hh"
 #include "kern/kernel_stats.hh"
 #include "sim/faults.hh"
@ -67,15 +66,6 @@

 using namespace TheISA;

-template <class Impl>
-template<typename T>
-void
-OzoneCPU<Impl>::trace_data(T data) {
-    if (traceData) {
-        traceData->setData(data);
-    }
-}
-
 template <class Impl>
 OzoneCPU<Impl>::TickEvent::TickEvent(OzoneCPU *c, int w)
    : Event(&mainEventQueue, CPU_Tick_Pri), cpu(c), width(w)
@ -112,7 +102,7 @@ OzoneCPU<Impl>::OzoneCPU(Params *p)
    _status = Idle;

    if (p->checker) {
-#if USE_CHECKER
+
        BaseCPU *temp_checker = p->checker;
        checker = dynamic_cast<Checker<DynInstPtr> *>(temp_checker);
        checker->setMemory(mem);
@ -126,6 +116,8 @@ OzoneCPU<Impl>::OzoneCPU(Params *p)
        panic("Checker enabled but not compiled in!");
 #endif
    } else {
+        // If checker is not being used, then the xcProxy points
+        // directly to the CPU's ExecContext.
        checker = NULL;
        thread.tc = &ozoneTC;
        tc = &ozoneTC;
@ -138,7 +130,7 @@ OzoneCPU<Impl>::OzoneCPU(Params *p)

    thread.setStatus(ThreadContext::Suspended);
 #if FULL_SYSTEM
-    /***** All thread state stuff *****/
+    // Setup thread state stuff.
    thread.cpu = this;
    thread.setTid(0);

@ -187,12 +179,15 @@ OzoneCPU<Impl>::OzoneCPU(Params *p)
    frontEnd->setBackEnd(backEnd);
    backEnd->setFrontEnd(frontEnd);

-    decoupledFrontEnd = p->decoupledFrontEnd;
-
    globalSeqNum = 1;

+#if FULL_SYSTEM
    checkInterrupts = false;
+#endif

+    lockFlag = 0;
+
+    // Setup rename table, initializing all values to ready.
    for (int i = 0; i < TheISA::TotalNumRegs; ++i) {
        thread.renameTable[i] = new DynInst(this);
        thread.renameTable[i]->setResultReady();
@ -233,8 +228,6 @@ OzoneCPU<Impl>::OzoneCPU(Params *p)
    thread.setVirtPort(virt_port);
 #endif

-    lockFlag = 0;
-
    DPRINTF(OzoneCPU, "OzoneCPU: Created Ozone cpu object.\n");
 }

@ -247,6 +240,7 @@ template <class Impl>
 void
 OzoneCPU<Impl>::switchOut()
 {
+    BaseCPU::switchOut(_sampler);
    switchCount = 0;
    // Front end needs state from back end, so switch out the back end first.
    backEnd->switchOut();
@ -257,6 +251,8 @@ template <class Impl>
 void
 OzoneCPU<Impl>::signalSwitched()
 {
+    // Only complete the switchout when both the front end and back
+    // end have signalled they are ready to switch.
    if (++switchCount == 2) {
        backEnd->doSwitchOut();
        frontEnd->doSwitchOut();
@ -266,6 +262,17 @@ OzoneCPU<Impl>::signalSwitched()
 #endif

        _status = SwitchedOut;
+#ifndef NDEBUG
+        // Loop through all registers
+        for (int i = 0; i < AlphaISA::TotalNumRegs; ++i) {
+            assert(thread.renameTable[i] == frontEnd->renameTable[i]);
+
+            assert(thread.renameTable[i] == backEnd->renameTable[i]);
+
+            DPRINTF(OzoneCPU, "Checking if register %i matches.\n", i);
+        }
+#endif
+
        if (tickEvent.scheduled())
            tickEvent.squash();
    }
@ -278,13 +285,25 @@ OzoneCPU<Impl>::takeOverFrom(BaseCPU *oldCPU)
 {
    BaseCPU::takeOverFrom(oldCPU);

+    thread.trapPending = false;
+    thread.inSyscall = false;
+
    backEnd->takeOverFrom();
    frontEnd->takeOverFrom();
+    frontEnd->renameTable.copyFrom(thread.renameTable);
+    backEnd->renameTable.copyFrom(thread.renameTable);
    assert(!tickEvent.scheduled());

+#ifndef NDEBUG
+    // Check rename table.
+    for (int i = 0; i < TheISA::TotalNumRegs; ++i) {
+        assert(thread.renameTable[i]->isResultReady());
+    }
+#endif
+
    // @todo: Fix hardcoded number
    // Clear out any old information in time buffer.
-    for (int i = 0; i < 6; ++i) {
+    for (int i = 0; i < 15; ++i) {
        comm.advance();
    }

@ -316,6 +335,10 @@ OzoneCPU<Impl>::activateContext(int thread_num, int delay)
    notIdleFraction++;
    scheduleTickEvent(delay);
    _status = Running;
+#if FULL_SYSTEM
+    if (thread.quiesceEvent && thread.quiesceEvent->scheduled())
+        thread.quiesceEvent->deschedule();
+#endif
    thread.setStatus(ThreadContext::Active);
    frontEnd->wakeFromQuiesce();
 }
@ -393,7 +416,7 @@ template <class Impl>
 void
 OzoneCPU<Impl>::resetStats()
 {
-    startNumInst = numInst;
+//    startNumInst = numInst;
    notIdleFraction = (_status != Idle);
 }

@ -441,6 +464,15 @@ OzoneCPU<Impl>::serialize(std::ostream &os)
    ozoneTC.serialize(os);
    nameOut(os, csprintf("%s.tickEvent", name()));
    tickEvent.serialize(os);
+
+    // Use SimpleThread's ability to checkpoint to make it easier to
+    // write out the registers.  Also make this static so it doesn't
+    // get instantiated multiple times (causes a panic in statistics).
+    static CPUExecContext temp;
+
+    nameOut(os, csprintf("%s.xc.0", name()));
+    temp.copyXC(thread.getXCProxy());
+    temp.serialize(os);
 }

 template <class Impl>
@ -451,6 +483,15 @@ OzoneCPU<Impl>::unserialize(Checkpoint *cp, const std::string &section)
    UNSERIALIZE_ENUM(_status);
    ozoneTC.unserialize(cp, csprintf("%s.tc", section));
    tickEvent.unserialize(cp, csprintf("%s.tickEvent", section));
+
+    // Use SimpleThread's ability to checkpoint to make it easier to
+    // read in the registers.  Also make this static so it doesn't
+    // get instantiated multiple times (causes a panic in statistics).
+    static CPUExecContext temp;
+
+    temp.copyXC(thread.getXCProxy());
+    temp.unserialize(cp, csprintf("%s.xc.0", section));
+    thread.getXCProxy()->copyArchRegs(temp.getProxy());
 }

 template <class Impl>
@ -810,7 +851,9 @@ OzoneCPU<Impl>::OzoneTC::halt()
 template <class Impl>
 void
 OzoneCPU<Impl>::OzoneTC::dumpFuncProfile()
-{ }
+{
+    thread->dumpFuncProfile();
+}
 #endif

 template <class Impl>
@ -829,6 +872,7 @@ OzoneCPU<Impl>::OzoneTC::takeOverFrom(ThreadContext *old_context)
    copyArchRegs(old_context);
    setCpuId(old_context->readCpuId());

+    thread->inst = old_context->getInst();
 #if !FULL_SYSTEM
    setFuncExeInst(old_context->readFuncExeInst());
 #else
@ -842,6 +886,7 @@ OzoneCPU<Impl>::OzoneTC::takeOverFrom(ThreadContext *old_context)
        thread->quiesceEvent->tc = this;
    }

+    // Copy kernel stats pointer from old context.
    thread->kernelStats = old_context->getKernelStats();
 //    storeCondFailures = 0;
    cpu->lockFlag = false;
@ -863,7 +908,11 @@ OzoneCPU<Impl>::OzoneTC::regStats(const std::string &name)
 template <class Impl>
 void
 OzoneCPU<Impl>::OzoneTC::serialize(std::ostream &os)
-{ }
+{
+    // Once serialization is added, serialize the quiesce event and
+    // kernel stats.  Will need to make sure there aren't multiple
+    // things that serialize them.
+}

 template <class Impl>
 void
@ -896,16 +945,14 @@ template <class Impl>
 void
 OzoneCPU<Impl>::OzoneTC::profileClear()
 {
-    if (thread->profile)
-        thread->profile->clear();
+    thread->profileClear();
 }

 template <class Impl>
 void
 OzoneCPU<Impl>::OzoneTC::profileSample()
 {
-    if (thread->profile)
-        thread->profile->sample(thread->profileNode, thread->profilePC);
+    thread->profileSample();
 }
 #endif

@ -916,7 +963,6 @@ OzoneCPU<Impl>::OzoneTC::getThreadNum()
    return thread->readTid();
 }

-// Also somewhat obnoxious.  Really only used for the TLB fault.
 template <class Impl>
 TheISA::MachInst
 OzoneCPU<Impl>::OzoneTC::getInst()
@ -934,14 +980,20 @@ OzoneCPU<Impl>::OzoneTC::copyArchRegs(ThreadContext *tc)
    cpu->frontEnd->setPC(thread->PC);
    cpu->frontEnd->setNextPC(thread->nextPC);

-    for (int i = 0; i < TheISA::TotalNumRegs; ++i) {
-        if (i < TheISA::FP_Base_DepTag) {
+    // First loop through the integer registers.
+    for (int i = 0; i < TheISA::NumIntRegs; ++i) {
+/*        DPRINTF(OzoneCPU, "Copying over register %i, had data %lli, "
+                "now has data %lli.\n",
+                i, thread->renameTable[i]->readIntResult(),
+                tc->readIntReg(i));
+*/
        thread->renameTable[i]->setIntResult(tc->readIntReg(i));
-        } else if (i < (TheISA::FP_Base_DepTag + TheISA::NumFloatRegs)) {
-            int fp_idx = i - TheISA::FP_Base_DepTag;
-            thread->renameTable[i]->setDoubleResult(
-                tc->readFloatReg(fp_idx, 64));
    }
+
+    // Then loop through the floating point registers.
+    for (int i = 0; i < TheISA::NumFloatRegs; ++i) {
+        int fp_idx = i + TheISA::FP_Base_DepTag;
+        thread->renameTable[fp_idx]->setIntResult(tc->readFloatRegBits(i));
    }

 #if !FULL_SYSTEM
--- a/src/cpu/ozone/front_end.hh
+++ b/src/cpu/ozone/front_end.hh
@ -34,6 +34,7 @@
 #include <deque>

 #include "arch/utility.hh"
+#include "base/timebuf.hh"
 #include "cpu/inst_seq.hh"
 #include "cpu/o3/bpred_unit.hh"
 #include "cpu/ozone/rename_table.hh"
@ -246,15 +247,21 @@ class FrontEnd
    void dumpInsts();

  private:
+    TimeBuffer<int> numInstsReady;
+
    typedef typename std::deque<DynInstPtr> InstBuff;
    typedef typename InstBuff::iterator InstBuffIt;

+    InstBuff feBuffer;
+
    InstBuff instBuffer;

    int instBufferSize;

    int maxInstBufferSize;

+    int latency;
+
    int width;

    int freeRegs;
--- a/src/cpu/ozone/front_end_impl.hh
+++ b/src/cpu/ozone/front_end_impl.hh
@ -92,8 +92,10 @@ FrontEnd<Impl>::FrontEnd(Params *params)
    : branchPred(params),
      icachePort(this),
      mem(params->mem),
+      numInstsReady(params->frontEndLatency, 0),
      instBufferSize(0),
      maxInstBufferSize(params->maxInstBufferSize),
+      latency(params->frontEndLatency),
      width(params->frontEndWidth),
      freeRegs(params->numPhysicalRegs),
      numPhysRegs(params->numPhysicalRegs),
@ -326,6 +328,18 @@ FrontEnd<Impl>::tick()
    if (switchedOut)
        return;

+    for (int insts_to_queue = numInstsReady[-latency];
+         !instBuffer.empty() && insts_to_queue;
+         --insts_to_queue)
+    {
+        DPRINTF(FE, "Transferring instruction [sn:%lli] to the feBuffer\n",
+                instBuffer.front()->seqNum);
+        feBuffer.push_back(instBuffer.front());
+        instBuffer.pop_front();
+    }
+
+    numInstsReady.advance();
+
    // @todo: Maybe I want to just have direct communication...
    if (fromCommit->doneSeqNum) {
        branchPred.update(fromCommit->doneSeqNum, 0);
@ -339,8 +353,8 @@ FrontEnd<Impl>::tick()
        cacheBlkValid = true;

        status = Running;
-        if (barrierInst)
-            status = SerializeBlocked;
+//        if (barrierInst)
+//            status = SerializeBlocked;
        if (freeRegs <= 0)
            status = RenameBlocked;
        checkBE();
@ -414,11 +428,12 @@ FrontEnd<Impl>::tick()
        // latency
        instBuffer.push_back(inst);
        ++instBufferSize;
+        numInstsReady[0]++;
        ++num_inst;

 #if FULL_SYSTEM
        if (inst->isQuiesce()) {
-            warn("%lli: Quiesce instruction encountered, halting fetch!", curTick);
+//            warn("%lli: Quiesce instruction encountered, halting fetch!", curTick);
            status = QuiescePending;
            break;
        }
@ -572,10 +587,10 @@ FrontEnd<Impl>::processBarriers(DynInstPtr &inst)

        // Change status over to SerializeBlocked so that other stages know
        // what this is blocked on.
-        status = SerializeBlocked;
+//        status = SerializeBlocked;

-        barrierInst = inst;
-        return true;
+//        barrierInst = inst;
+//        return true;
    } else if ((inst->isStoreConditional() || inst->isSerializeAfter())
               && !inst->isSerializeHandled()) {
        DPRINTF(FE, "Serialize after instruction encountered.\n");
@ -620,6 +635,7 @@ FrontEnd<Impl>::handleFault(Fault &fault)
    instruction->fault = fault;
    instruction->setCanIssue();
    instBuffer.push_back(instruction);
+    numInstsReady[0]++;
    ++instBufferSize;
 }

@ -649,6 +665,21 @@ FrontEnd<Impl>::squash(const InstSeqNum &squash_num, const Addr &next_PC,
        freeRegs+= inst->numDestRegs();
    }

+    while (!feBuffer.empty() &&
+           feBuffer.back()->seqNum > squash_num) {
+        DynInstPtr inst = feBuffer.back();
+
+        DPRINTF(FE, "Squashing instruction [sn:%lli] PC %#x\n",
+                inst->seqNum, inst->readPC());
+
+        inst->clearDependents();
+
+        feBuffer.pop_back();
+        --instBufferSize;
+
+        freeRegs+= inst->numDestRegs();
+    }
+
    // Copy over rename table from the back end.
    renameTable.copyFrom(backEnd->renameTable);

@ -666,12 +697,12 @@ FrontEnd<Impl>::squash(const InstSeqNum &squash_num, const Addr &next_PC,
        DPRINTF(FE, "Squashing outstanding Icache access.\n");
        memReq = NULL;
    }
-
+/*
    if (status == SerializeBlocked) {
        assert(barrierInst->seqNum > squash_num);
        barrierInst = NULL;
    }
-
+*/
    // Unless this squash originated from the front end, we're probably
    // in running mode now.
    // Actually might want to make this latency dependent.
@ -683,13 +714,22 @@ template <class Impl>
 typename Impl::DynInstPtr
 FrontEnd<Impl>::getInst()
 {
-    if (instBufferSize == 0) {
+    if (feBuffer.empty()) {
        return NULL;
    }

-    DynInstPtr inst = instBuffer.front();
+    DynInstPtr inst = feBuffer.front();

-    instBuffer.pop_front();
+    if (inst->isSerializeBefore() || inst->isIprAccess()) {
+        DPRINTF(FE, "Back end is getting a serialize before inst\n");
+        if (!backEnd->robEmpty()) {
+            DPRINTF(FE, "Rob is not empty yet, not returning inst\n");
+            return NULL;
+        }
+        inst->clearSerializeBefore();
+    }
+
+    feBuffer.pop_front();

    --instBufferSize;

@ -784,11 +824,11 @@ FrontEnd<Impl>::updateStatus()
    }

    if (status == BEBlocked && !be_block) {
-        if (barrierInst) {
-            status = SerializeBlocked;
-        } else {
+//        if (barrierInst) {
+//            status = SerializeBlocked;
+//        } else {
            status = Running;
-        }
+//        }
        ret_val = true;
    }
    return ret_val;
@ -810,6 +850,7 @@ template <class Impl>
 typename Impl::DynInstPtr
 FrontEnd<Impl>::getInstFromCacheline()
 {
+/*
    if (status == SerializeComplete) {
        DynInstPtr inst = barrierInst;
        status = Running;
@ -817,7 +858,7 @@ FrontEnd<Impl>::getInstFromCacheline()
        inst->clearSerializeBefore();
        return inst;
    }
-
+*/
    InstSeqNum inst_seq;
    MachInst inst;
    // @todo: Fix this magic number used here to handle word offset (and
@ -932,6 +973,7 @@ FrontEnd<Impl>::doSwitchOut()
    squash(0, 0);
    instBuffer.clear();
    instBufferSize = 0;
+    feBuffer.clear();
    status = Idle;
 }

--- a/src/cpu/ozone/inorder_back_end_impl.hh
+++ b/src/cpu/ozone/inorder_back_end_impl.hh
@ -284,7 +284,7 @@ InorderBackEnd<Impl>::executeInsts()
        }

        inst->setExecuted();
-        inst->setCompleted();
+        inst->setResultReady();
        inst->setCanCommit();

        instList.pop_front();
--- a/src/cpu/ozone/inst_queue_impl.hh
+++ b/src/cpu/ozone/inst_queue_impl.hh
@ -850,13 +850,13 @@ template <class Impl>
 void
 InstQueue<Impl>::addReadyMemInst(DynInstPtr &ready_inst)
 {
-    OpClass op_class = ready_inst->opClass();
+//    OpClass op_class = ready_inst->opClass();

    readyInsts.push(ready_inst);

    DPRINTF(IQ, "Instruction is ready to issue, putting it onto "
            "the ready list, PC %#x opclass:%i [sn:%lli].\n",
-            ready_inst->readPC(), op_class, ready_inst->seqNum);
+            ready_inst->readPC(), ready_inst->opClass(), ready_inst->seqNum);
 }
 /*
 template <class Impl>
@ -1177,11 +1177,11 @@ InstQueue<Impl>::addIfReady(DynInstPtr &inst)
            return;
        }

-        OpClass op_class = inst->opClass();
+//        OpClass op_class = inst->opClass();

        DPRINTF(IQ, "Instruction is ready to issue, putting it onto "
                "the ready list, PC %#x opclass:%i [sn:%lli].\n",
-                inst->readPC(), op_class, inst->seqNum);
+                inst->readPC(), inst->opClass(), inst->seqNum);

        readyInsts.push(inst);
    }
--- a/src/cpu/ozone/lw_back_end.hh
+++ b/src/cpu/ozone/lw_back_end.hh
@ -80,7 +80,7 @@ class LWBackEnd
    TimeBuffer<IssueToExec> i2e;
    typename TimeBuffer<IssueToExec>::wire instsToExecute;
    TimeBuffer<ExecToCommit> e2c;
-    TimeBuffer<Writeback> numInstsToWB;
+    TimeBuffer<int> numInstsToWB;

    TimeBuffer<CommStruct> *comm;
    typename TimeBuffer<CommStruct>::wire toIEW;
@ -139,7 +139,7 @@ class LWBackEnd

    Tick lastCommitCycle;

-    bool robEmpty() { return instList.empty(); }
+    bool robEmpty() { return numInsts == 0; }

    bool isFull() { return numInsts >= numROBEntries; }
    bool isBlocked() { return status == Blocked || dispatchStatus == Blocked; }
@ -194,6 +194,7 @@ class LWBackEnd
    }

    void instToCommit(DynInstPtr &inst);
+    void readyInstsForCommit();

    void switchOut();
    void doSwitchOut();
@ -255,12 +256,13 @@ class LWBackEnd

    RenameTable<Impl> renameTable;
  private:
+    int latency;
+
    // General back end width. Used if the more specific isn't given.
    int width;

    // Dispatch width.
    int dispatchWidth;
-    int numDispatchEntries;
    int dispatchSize;

    int waitingInsts;
@ -285,6 +287,7 @@ class LWBackEnd

    int numROBEntries;
    int numInsts;
+    bool lsqLimits;

    std::set<InstSeqNum> waitingMemOps;
    typedef std::set<InstSeqNum>::iterator MemIt;
@ -295,9 +298,6 @@ class LWBackEnd
    InstSeqNum squashSeqNum;
    Addr squashNextPC;

-    Fault faultFromFetch;
-    bool fetchHasFault;
-
    bool switchedOut;
    bool switchPending;

@ -321,8 +321,6 @@ class LWBackEnd
    std::list<DynInstPtr> replayList;
    std::list<DynInstPtr> writeback;

-    int latency;
-
    int squashLatency;

    bool exactFullStall;
@ -331,37 +329,39 @@ class LWBackEnd
 /*    Stats::Scalar<> dcacheStallCycles;
      Counter lastDcacheStall;
 */
-    Stats::Vector<> rob_cap_events;
-    Stats::Vector<> rob_cap_inst_count;
-    Stats::Vector<> iq_cap_events;
-    Stats::Vector<> iq_cap_inst_count;
+    Stats::Vector<> robCapEvents;
+    Stats::Vector<> robCapInstCount;
+    Stats::Vector<> iqCapEvents;
+    Stats::Vector<> iqCapInstCount;
    // total number of instructions executed
-    Stats::Vector<> exe_inst;
-    Stats::Vector<> exe_swp;
-    Stats::Vector<> exe_nop;
-    Stats::Vector<> exe_refs;
-    Stats::Vector<> exe_loads;
-    Stats::Vector<> exe_branches;
+    Stats::Vector<> exeInst;
+    Stats::Vector<> exeSwp;
+    Stats::Vector<> exeNop;
+    Stats::Vector<> exeRefs;
+    Stats::Vector<> exeLoads;
+    Stats::Vector<> exeBranches;

-    Stats::Vector<> issued_ops;
+    Stats::Vector<> issuedOps;

    // total number of loads forwaded from LSQ stores
-    Stats::Vector<> lsq_forw_loads;
+    Stats::Vector<> lsqForwLoads;

    // total number of loads ignored due to invalid addresses
-    Stats::Vector<> inv_addr_loads;
+    Stats::Vector<> invAddrLoads;

    // total number of software prefetches ignored due to invalid addresses
-    Stats::Vector<> inv_addr_swpfs;
+    Stats::Vector<> invAddrSwpfs;
    // ready loads blocked due to memory disambiguation
-    Stats::Vector<> lsq_blocked_loads;
+    Stats::Vector<> lsqBlockedLoads;

    Stats::Scalar<> lsqInversion;

-    Stats::Vector<> n_issued_dist;
-    Stats::VectorDistribution<> issue_delay_dist;
+    Stats::Vector<> nIssuedDist;
+/*
+    Stats::VectorDistribution<> issueDelayDist;

-    Stats::VectorDistribution<> queue_res_dist;
+    Stats::VectorDistribution<> queueResDist;
+*/
 /*
    Stats::Vector<> stat_fu_busy;
    Stats::Vector2d<> stat_fuBusy;
@ -379,37 +379,37 @@ class LWBackEnd
    Stats::Formula commit_ipb;
    Stats::Formula lsq_inv_rate;
 */
-    Stats::Vector<> writeback_count;
-    Stats::Vector<> producer_inst;
-    Stats::Vector<> consumer_inst;
-    Stats::Vector<> wb_penalized;
+    Stats::Vector<> writebackCount;
+    Stats::Vector<> producerInst;
+    Stats::Vector<> consumerInst;
+    Stats::Vector<> wbPenalized;

-    Stats::Formula wb_rate;
-    Stats::Formula wb_fanout;
-    Stats::Formula wb_penalized_rate;
+    Stats::Formula wbRate;
+    Stats::Formula wbFanout;
+    Stats::Formula wbPenalizedRate;

    // total number of instructions committed
-    Stats::Vector<> stat_com_inst;
-    Stats::Vector<> stat_com_swp;
-    Stats::Vector<> stat_com_refs;
-    Stats::Vector<> stat_com_loads;
-    Stats::Vector<> stat_com_membars;
-    Stats::Vector<> stat_com_branches;
+    Stats::Vector<> statComInst;
+    Stats::Vector<> statComSwp;
+    Stats::Vector<> statComRefs;
+    Stats::Vector<> statComLoads;
+    Stats::Vector<> statComMembars;
+    Stats::Vector<> statComBranches;

-    Stats::Distribution<> n_committed_dist;
+    Stats::Distribution<> nCommittedDist;

-    Stats::Scalar<> commit_eligible_samples;
-    Stats::Vector<> commit_eligible;
+    Stats::Scalar<> commitEligibleSamples;
+    Stats::Vector<> commitEligible;

    Stats::Vector<> squashedInsts;
    Stats::Vector<> ROBSquashedInsts;

-    Stats::Scalar<> ROB_fcount;
-    Stats::Formula ROB_full_rate;
+    Stats::Scalar<> ROBFcount;
+    Stats::Formula ROBFullRate;

-    Stats::Vector<>  ROB_count;	 // cumulative ROB occupancy
-    Stats::Formula ROB_occ_rate;
-    Stats::VectorDistribution<> ROB_occ_dist;
+    Stats::Vector<>  ROBCount;	 // cumulative ROB occupancy
+    Stats::Formula ROBOccRate;
+//    Stats::VectorDistribution<> ROBOccDist;
  public:
    void dumpInsts();

--- a/src/cpu/ozone/lw_back_end_impl.hh
+++ b/src/cpu/ozone/lw_back_end_impl.hh
@ -141,13 +141,14 @@ LWBackEnd<Impl>::replayMemInst(DynInstPtr &inst)

 template <class Impl>
 LWBackEnd<Impl>::LWBackEnd(Params *params)
-    : d2i(5, 5), i2e(5, 5), e2c(5, 5), numInstsToWB(5, 5),
+    : d2i(5, 5), i2e(5, 5), e2c(5, 5), numInstsToWB(params->backEndLatency, 0),
      trapSquash(false), tcSquash(false),
-      width(params->backEndWidth), exactFullStall(true)
+      latency(params->backEndLatency),
+      width(params->backEndWidth), lsqLimits(params->lsqLimits),
+      exactFullStall(true)
 {
    numROBEntries = params->numROBEntries;
    numInsts = 0;
-    numDispatchEntries = 32;
    maxOutstandingMemOps = params->maxOutstandingMemOps;
    numWaitingMemOps = 0;
    waitingInsts = 0;
@ -184,78 +185,79 @@ void
 LWBackEnd<Impl>::regStats()
 {
    using namespace Stats;
-    rob_cap_events
+    LSQ.regStats();
+
+    robCapEvents
        .init(cpu->number_of_threads)
        .name(name() + ".ROB:cap_events")
        .desc("number of cycles where ROB cap was active")
        .flags(total)
        ;

-    rob_cap_inst_count
+    robCapInstCount
        .init(cpu->number_of_threads)
        .name(name() + ".ROB:cap_inst")
        .desc("number of instructions held up by ROB cap")
        .flags(total)
        ;

-    iq_cap_events
+    iqCapEvents
        .init(cpu->number_of_threads)
        .name(name() +".IQ:cap_events" )
        .desc("number of cycles where IQ cap was active")
        .flags(total)
        ;

-    iq_cap_inst_count
+    iqCapInstCount
        .init(cpu->number_of_threads)
        .name(name() + ".IQ:cap_inst")
        .desc("number of instructions held up by IQ cap")
        .flags(total)
        ;

-
-    exe_inst
+    exeInst
        .init(cpu->number_of_threads)
        .name(name() + ".ISSUE:count")
        .desc("number of insts issued")
        .flags(total)
        ;

-    exe_swp
+    exeSwp
        .init(cpu->number_of_threads)
        .name(name() + ".ISSUE:swp")
        .desc("number of swp insts issued")
        .flags(total)
        ;

-    exe_nop
+    exeNop
        .init(cpu->number_of_threads)
        .name(name() + ".ISSUE:nop")
        .desc("number of nop insts issued")
        .flags(total)
        ;

-    exe_refs
+    exeRefs
        .init(cpu->number_of_threads)
        .name(name() + ".ISSUE:refs")
        .desc("number of memory reference insts issued")
        .flags(total)
        ;

-    exe_loads
+    exeLoads
        .init(cpu->number_of_threads)
        .name(name() + ".ISSUE:loads")
        .desc("number of load insts issued")
        .flags(total)
        ;

-    exe_branches
+    exeBranches
        .init(cpu->number_of_threads)
        .name(name() + ".ISSUE:branches")
        .desc("Number of branches issued")
        .flags(total)
        ;

-    issued_ops
+    issuedOps
        .init(cpu->number_of_threads)
        .name(name() + ".ISSUE:op_count")
        .desc("number of insts issued")
@ -272,28 +274,28 @@ LWBackEnd<Impl>::regStats()
    //
    //  Other stats
    //
-    lsq_forw_loads
+    lsqForwLoads
        .init(cpu->number_of_threads)
        .name(name() + ".LSQ:forw_loads")
        .desc("number of loads forwarded via LSQ")
        .flags(total)
        ;

-    inv_addr_loads
+    invAddrLoads
        .init(cpu->number_of_threads)
        .name(name() + ".ISSUE:addr_loads")
        .desc("number of invalid-address loads")
        .flags(total)
        ;

-    inv_addr_swpfs
+    invAddrSwpfs
        .init(cpu->number_of_threads)
        .name(name() + ".ISSUE:addr_swpfs")
        .desc("number of invalid-address SW prefetches")
        .flags(total)
        ;

-    lsq_blocked_loads
+    lsqBlockedLoads
        .init(cpu->number_of_threads)
        .name(name() + ".LSQ:blocked_loads")
        .desc("number of ready loads not issued due to memory disambiguation")
@ -305,51 +307,52 @@ LWBackEnd<Impl>::regStats()
        .desc("Number of times LSQ instruction issued early")
        ;

-    n_issued_dist
+    nIssuedDist
        .init(issueWidth + 1)
        .name(name() + ".ISSUE:issued_per_cycle")
        .desc("Number of insts issued each cycle")
        .flags(total | pdf | dist)
        ;
-    issue_delay_dist
+/*
+    issueDelayDist
        .init(Num_OpClasses,0,99,2)
        .name(name() + ".ISSUE:")
        .desc("cycles from operands ready to issue")
        .flags(pdf | cdf)
        ;

-    queue_res_dist
+    queueResDist
        .init(Num_OpClasses, 0, 99, 2)
        .name(name() + ".IQ:residence:")
        .desc("cycles from dispatch to issue")
        .flags(total | pdf | cdf )
        ;
    for (int i = 0; i < Num_OpClasses; ++i) {
-        queue_res_dist.subname(i, opClassStrings[i]);
+        queueResDist.subname(i, opClassStrings[i]);
    }
-
-    writeback_count
+*/
+    writebackCount
        .init(cpu->number_of_threads)
        .name(name() + ".WB:count")
        .desc("cumulative count of insts written-back")
        .flags(total)
        ;

-    producer_inst
+    producerInst
        .init(cpu->number_of_threads)
        .name(name() + ".WB:producers")
        .desc("num instructions producing a value")
        .flags(total)
        ;

-    consumer_inst
+    consumerInst
        .init(cpu->number_of_threads)
        .name(name() + ".WB:consumers")
        .desc("num instructions consuming a value")
        .flags(total)
        ;

-    wb_penalized
+    wbPenalized
        .init(cpu->number_of_threads)
        .name(name() + ".WB:penalized")
        .desc("number of instrctions required to write to 'other' IQ")
@ -357,71 +360,71 @@ LWBackEnd<Impl>::regStats()
        ;


-    wb_penalized_rate
+    wbPenalizedRate
        .name(name() + ".WB:penalized_rate")
        .desc ("fraction of instructions written-back that wrote to 'other' IQ")
        .flags(total)
        ;

-    wb_penalized_rate = wb_penalized / writeback_count;
+    wbPenalizedRate = wbPenalized / writebackCount;

-    wb_fanout
+    wbFanout
        .name(name() + ".WB:fanout")
        .desc("average fanout of values written-back")
        .flags(total)
        ;

-    wb_fanout = producer_inst / consumer_inst;
+    wbFanout = producerInst / consumerInst;

-    wb_rate
+    wbRate
        .name(name() + ".WB:rate")
        .desc("insts written-back per cycle")
        .flags(total)
        ;
-    wb_rate = writeback_count / cpu->numCycles;
+    wbRate = writebackCount / cpu->numCycles;

-    stat_com_inst
+    statComInst
        .init(cpu->number_of_threads)
        .name(name() + ".COM:count")
        .desc("Number of instructions committed")
        .flags(total)
        ;

-    stat_com_swp
+    statComSwp
        .init(cpu->number_of_threads)
        .name(name() + ".COM:swp_count")
        .desc("Number of s/w prefetches committed")
        .flags(total)
        ;

-    stat_com_refs
+    statComRefs
        .init(cpu->number_of_threads)
        .name(name() +  ".COM:refs")
        .desc("Number of memory references committed")
        .flags(total)
        ;

-    stat_com_loads
+    statComLoads
        .init(cpu->number_of_threads)
        .name(name() +  ".COM:loads")
        .desc("Number of loads committed")
        .flags(total)
        ;

-    stat_com_membars
+    statComMembars
        .init(cpu->number_of_threads)
        .name(name() +  ".COM:membars")
        .desc("Number of memory barriers committed")
        .flags(total)
        ;

-    stat_com_branches
+    statComBranches
        .init(cpu->number_of_threads)
        .name(name() + ".COM:branches")
        .desc("Number of branches committed")
        .flags(total)
        ;
-    n_committed_dist
+    nCommittedDist
        .init(0,commitWidth,1)
        .name(name() + ".COM:committed_per_cycle")
        .desc("Number of insts commited each cycle")
@ -441,14 +444,14 @@ LWBackEnd<Impl>::regStats()
    //  -> The standard deviation is computed only over cycles where
    //  we reached the BW limit
    //
-    commit_eligible
+    commitEligible
        .init(cpu->number_of_threads)
        .name(name() + ".COM:bw_limited")
        .desc("number of insts not committed due to BW limits")
        .flags(total)
        ;

-    commit_eligible_samples
+    commitEligibleSamples
        .name(name() + ".COM:bw_lim_events")
        .desc("number cycles where commit BW limit reached")
        ;
@ -465,37 +468,38 @@ LWBackEnd<Impl>::regStats()
        .desc("Number of instructions removed from inst list when they reached the head of the ROB")
        ;

-    ROB_fcount
+    ROBFcount
        .name(name() + ".ROB:full_count")
        .desc("number of cycles where ROB was full")
        ;

-    ROB_count
+    ROBCount
        .init(cpu->number_of_threads)
        .name(name() + ".ROB:occupancy")
        .desc(name() + ".ROB occupancy (cumulative)")
        .flags(total)
        ;

-    ROB_full_rate
+    ROBFullRate
        .name(name() + ".ROB:full_rate")
        .desc("ROB full per cycle")
        ;
-    ROB_full_rate = ROB_fcount / cpu->numCycles;
+    ROBFullRate = ROBFcount / cpu->numCycles;

-    ROB_occ_rate
+    ROBOccRate
        .name(name() + ".ROB:occ_rate")
        .desc("ROB occupancy rate")
        .flags(total)
        ;
-    ROB_occ_rate = ROB_count / cpu->numCycles;
-
-    ROB_occ_dist
+    ROBOccRate = ROBCount / cpu->numCycles;
+/*
+    ROBOccDist
        .init(cpu->number_of_threads,0,numROBEntries,2)
        .name(name() + ".ROB:occ_dist")
        .desc("ROB Occupancy per cycle")
        .flags(total | cdf)
        ;
+*/
 }

 template <class Impl>
@ -588,18 +592,22 @@ LWBackEnd<Impl>::tick()
 {
    DPRINTF(BE, "Ticking back end\n");

+    // Read in any done instruction information and update the IQ or LSQ.
+    updateStructures();
+
    if (switchPending && robEmpty() && !LSQ.hasStoresToWB()) {
        cpu->signalSwitched();
        return;
    }

-    ROB_count[0]+= numInsts;
+    readyInstsForCommit();
+
+    numInstsToWB.advance();
+
+    ROBCount[0]+= numInsts;

    wbCycle = 0;

-    // Read in any done instruction information and update the IQ or LSQ.
-    updateStructures();
-
 #if FULL_SYSTEM
    checkInterrupts();
 #endif
@ -674,6 +682,10 @@ LWBackEnd<Impl>::dispatchInsts()
    while (numInsts < numROBEntries &&
           numWaitingMemOps < maxOutstandingMemOps) {
        // Get instruction from front of time buffer
+        if (lsqLimits && LSQ.isFull()) {
+            break;
+        }
+
        DynInstPtr inst = frontEnd->getInst();
        if (!inst) {
            break;
@ -732,6 +744,7 @@ LWBackEnd<Impl>::dispatchInsts()
                inst->setIssued();
                inst->setExecuted();
                inst->setCanCommit();
+                numInstsToWB[0]++;
            } else {
                DPRINTF(BE, "Instruction [sn:%lli] ready, addding to "
                        "exeList.\n",
@ -866,8 +879,17 @@ LWBackEnd<Impl>::executeInsts()
            if (inst->isLoad()) {
                LSQ.executeLoad(inst);
            } else if (inst->isStore()) {
-                LSQ.executeStore(inst);
-                if (inst->req && !(inst->req->getFlags() & LOCKED)) {
+                Fault fault = LSQ.executeStore(inst);
+
+                if (!inst->isStoreConditional() && fault == NoFault) {
+                    inst->setExecuted();
+
+                    instToCommit(inst);
+                } else if (fault != NoFault) {
+                    // If the instruction faulted, then we need to send it along to commit
+                    // without the instruction completing.
+                    // Send this instruction to commit, also make sure iew stage
+                    // realizes there is activity.
                    inst->setExecuted();

                    instToCommit(inst);
@ -908,36 +930,54 @@ LWBackEnd<Impl>::executeInsts()
        }
    }

-    issued_ops[0]+= num_executed;
-    n_issued_dist[num_executed]++;
+    issuedOps[0]+= num_executed;
+    nIssuedDist[num_executed]++;
 }

 template<class Impl>
 void
 LWBackEnd<Impl>::instToCommit(DynInstPtr &inst)
 {
-
    DPRINTF(BE, "Sending instructions to commit [sn:%lli] PC %#x.\n",
            inst->seqNum, inst->readPC());

+    if (!inst->isSquashed()) {
+        if (inst->isExecuted()) {
+            inst->setResultReady();
+            int dependents = wakeDependents(inst);
+            if (dependents) {
+                producerInst[0]++;
+                consumerInst[0]+= dependents;
+            }
+        }
+    }
+
+    writeback.push_back(inst);
+
+    numInstsToWB[0]++;
+
+    writebackCount[0]++;
+}
+
+template <class Impl>
+void
+LWBackEnd<Impl>::readyInstsForCommit()
+{
+    for (int i = numInstsToWB[-latency];
+         !writeback.empty() && i;
+         --i)
+    {
+        DynInstPtr inst = writeback.front();
+        writeback.pop_front();
        if (!inst->isSquashed()) {
            DPRINTF(BE, "Writing back instruction [sn:%lli] PC %#x.\n",
                    inst->seqNum, inst->readPC());

            inst->setCanCommit();
-
-        if (inst->isExecuted()) {
-            inst->setResultReady();
-            int dependents = wakeDependents(inst);
-            if (dependents) {
-                producer_inst[0]++;
-                consumer_inst[0]+= dependents;
        }
    }
 }

-    writeback_count[0]++;
-}
 #if 0
 template <class Impl>
 void
@ -1010,7 +1050,7 @@ LWBackEnd<Impl>::commitInst(int inst_num)
    // or store inst.  Signal backwards that it should be executed.
    if (!inst->isExecuted()) {
        if (inst->isNonSpeculative() ||
-            inst->isStoreConditional() ||
+            (inst->isStoreConditional() && inst->getFault() == NoFault) ||
            inst->isMemBarrier() ||
            inst->isWriteBarrier()) {
 #if !FULL_SYSTEM
@ -1151,6 +1191,20 @@ LWBackEnd<Impl>::commitInst(int inst_num)
        ++freed_regs;
    }

+#if FULL_SYSTEM
+    if (thread->profile) {
+//        bool usermode =
+//            (xc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
+//        thread->profilePC = usermode ? 1 : inst->readPC();
+        thread->profilePC = inst->readPC();
+        ProfileNode *node = thread->profile->consume(thread->getXCProxy(),
+                                                     inst->staticInst);
+
+        if (node)
+            thread->profileNode = node;
+    }
+#endif
+
    if (inst->traceData) {
        inst->traceData->setFetchSeq(inst->seqNum);
        inst->traceData->setCPSeq(thread->numInst);
@ -1158,6 +1212,9 @@ LWBackEnd<Impl>::commitInst(int inst_num)
        inst->traceData = NULL;
    }

+    if (inst->isCopy())
+        panic("Should not commit any copy instructions!");
+
    inst->clearDependents();

    frontEnd->addFreeRegs(freed_regs);
@ -1207,9 +1264,9 @@ LWBackEnd<Impl>::commitInsts()
    while (!instList.empty() && inst_num < commitWidth) {
        if (instList.back()->isSquashed()) {
            instList.back()->clearDependents();
+            ROBSquashedInsts[instList.back()->threadNumber]++;
            instList.pop_back();
            --numInsts;
-            ROBSquashedInsts[instList.back()->threadNumber]++;
            continue;
        }

@ -1221,7 +1278,7 @@ LWBackEnd<Impl>::commitInsts()
            break;
        }
    }
-    n_committed_dist.sample(inst_num);
+    nCommittedDist.sample(inst_num);
 }

 template <class Impl>
@ -1231,10 +1288,10 @@ LWBackEnd<Impl>::squash(const InstSeqNum &sn)
    LSQ.squash(sn);

    int freed_regs = 0;
-    InstListIt waiting_list_end = waitingList.end();
+    InstListIt insts_end_it = waitingList.end();
    InstListIt insts_it = waitingList.begin();

-    while (insts_it != waiting_list_end && (*insts_it)->seqNum > sn)
+    while (insts_it != insts_end_it && (*insts_it)->seqNum > sn)
    {
        if ((*insts_it)->isSquashed()) {
            ++insts_it;
@ -1260,6 +1317,7 @@ LWBackEnd<Impl>::squash(const InstSeqNum &sn)
    while (!instList.empty() && (*insts_it)->seqNum > sn)
    {
        if ((*insts_it)->isSquashed()) {
+            panic("Instruction should not be already squashed and on list!");
            ++insts_it;
            continue;
        }
@ -1291,18 +1349,6 @@ LWBackEnd<Impl>::squash(const InstSeqNum &sn)
        --numInsts;
    }

-    insts_it = waitingList.begin();
-    while (!waitingList.empty() && insts_it != waitingList.end()) {
-        if ((*insts_it)->seqNum < sn) {
-            ++insts_it;
-            continue;
-        }
-        assert((*insts_it)->isSquashed());
-
-        waitingList.erase(insts_it++);
-        waitingInsts--;
-    }
-
    while (memBarrier && memBarrier->seqNum > sn) {
        DPRINTF(BE, "[sn:%lli] Memory barrier squashed (or previously "
                "squashed)\n", memBarrier->seqNum);
@ -1320,6 +1366,18 @@ LWBackEnd<Impl>::squash(const InstSeqNum &sn)
        }
    }

+    insts_it = replayList.begin();
+    insts_end_it = replayList.end();
+    while (!replayList.empty() && insts_it != insts_end_it) {
+        if ((*insts_it)->seqNum < sn) {
+            ++insts_it;
+            continue;
+        }
+        assert((*insts_it)->isSquashed());
+
+        replayList.erase(insts_it++);
+    }
+
    frontEnd->addFreeRegs(freed_regs);
 }

@ -1390,14 +1448,6 @@ LWBackEnd<Impl>::squashDueToMemBlocked(DynInstPtr &inst)
    frontEnd->squash(inst->seqNum - 1, inst->readPC());
 }

-template <class Impl>
-void
-LWBackEnd<Impl>::fetchFault(Fault &fault)
-{
-    faultFromFetch = fault;
-    fetchHasFault = true;
-}
-
 template <class Impl>
 void
 LWBackEnd<Impl>::switchOut()
@ -1416,17 +1466,25 @@ LWBackEnd<Impl>::doSwitchOut()
    // yet written back.
    assert(robEmpty());
    assert(!LSQ.hasStoresToWB());
+    writeback.clear();
+    for (int i = 0; i < numInstsToWB.getSize() + 1; ++i)
+        numInstsToWB.advance();

+//    squash(0);
+    assert(waitingList.empty());
+    assert(instList.empty());
+    assert(replayList.empty());
+    assert(writeback.empty());
    LSQ.switchOut();
-
-    squash(0);
 }

 template <class Impl>
 void
 LWBackEnd<Impl>::takeOverFrom(ThreadContext *old_tc)
 {
-    switchedOut = false;
+    assert(!squashPending);
+    squashSeqNum = 0;
+    squashNextPC = 0;
    tcSquash = false;
    trapSquash = false;

@ -1451,27 +1509,27 @@ LWBackEnd<Impl>::updateExeInstStats(DynInstPtr &inst)
    //
 #ifdef TARGET_ALPHA
    if (inst->isDataPrefetch())
-        exe_swp[thread_number]++;
+        exeSwp[thread_number]++;
    else
-        exe_inst[thread_number]++;
+        exeInst[thread_number]++;
 #else
-    exe_inst[thread_number]++;
+    exeInst[thread_number]++;
 #endif

    //
    //  Control operations
    //
    if (inst->isControl())
-        exe_branches[thread_number]++;
+        exeBranches[thread_number]++;

    //
    //  Memory operations
    //
    if (inst->isMemRef()) {
-        exe_refs[thread_number]++;
+        exeRefs[thread_number]++;

        if (inst->isLoad())
-            exe_loads[thread_number]++;
+            exeLoads[thread_number]++;
    }
 }

@ -1491,33 +1549,33 @@ LWBackEnd<Impl>::updateComInstStats(DynInstPtr &inst)
    //
 #ifdef TARGET_ALPHA
    if (inst->isDataPrefetch()) {
-        stat_com_swp[tid]++;
+        statComSwp[tid]++;
    } else {
-        stat_com_inst[tid]++;
+        statComInst[tid]++;
    }
 #else
-    stat_com_inst[tid]++;
+    statComInst[tid]++;
 #endif

    //
    //  Control Instructions
    //
    if (inst->isControl())
-        stat_com_branches[tid]++;
+        statComBranches[tid]++;

    //
    //  Memory references
    //
    if (inst->isMemRef()) {
-        stat_com_refs[tid]++;
+        statComRefs[tid]++;

        if (inst->isLoad()) {
-            stat_com_loads[tid]++;
+            statComLoads[tid]++;
        }
    }

    if (inst->isMemBarrier()) {
-        stat_com_membars[tid]++;
+        statComMembars[tid]++;
    }
 }

@ -1569,6 +1627,45 @@ LWBackEnd<Impl>::dumpInsts()
        ++num;
    }

+    inst_list_it = --(writeback.end());
+
+    cprintf("Writeback list size: %i\n", writeback.size());
+
+    while (inst_list_it != writeback.end())
+    {
+        cprintf("Instruction:%i\n",
+                num);
+        if (!(*inst_list_it)->isSquashed()) {
+            if (!(*inst_list_it)->isIssued()) {
+                ++valid_num;
+                cprintf("Count:%i\n", valid_num);
+            } else if ((*inst_list_it)->isMemRef() &&
+                       !(*inst_list_it)->memOpDone) {
+                // Loads that have not been marked as executed still count
+                // towards the total instructions.
+                ++valid_num;
+                cprintf("Count:%i\n", valid_num);
+            }
+        }
+
+        cprintf("PC:%#x\n[sn:%lli]\n[tid:%i]\n"
+                "Issued:%i\nSquashed:%i\n",
+                (*inst_list_it)->readPC(),
+                (*inst_list_it)->seqNum,
+                (*inst_list_it)->threadNumber,
+                (*inst_list_it)->isIssued(),
+                (*inst_list_it)->isSquashed());
+
+        if ((*inst_list_it)->isMemRef()) {
+            cprintf("MemOpDone:%i\n", (*inst_list_it)->memOpDone);
+        }
+
+        cprintf("\n");
+
+        inst_list_it--;
+        ++num;
+    }
+
    cprintf("Waiting list size: %i\n", waitingList.size());

    inst_list_it = --(waitingList.end());
--- a/src/cpu/ozone/lw_lsq.hh
+++ b/src/cpu/ozone/lw_lsq.hh
@ -84,6 +84,8 @@ class OzoneLWLSQ {
    /** Returns the name of the LSQ unit. */
    std::string name() const;

+    void regStats();
+
    /** Sets the CPU pointer. */
    void setCPU(OzoneCPU *cpu_ptr);

@ -179,7 +181,7 @@ class OzoneLWLSQ {
    int numLoads() { return loads; }

    /** Returns the number of stores in the SQ. */
-    int numStores() { return stores; }
+    int numStores() { return stores + storesInFlight; }

    /** Returns if either the LQ or SQ is full. */
    bool isFull() { return lqFull() || sqFull(); }
@ -188,7 +190,7 @@ class OzoneLWLSQ {
    bool lqFull() { return loads >= (LQEntries - 1); }

    /** Returns if the SQ is full. */
-    bool sqFull() { return stores >= (SQEntries - 1); }
+    bool sqFull() { return (stores + storesInFlight) >= (SQEntries - 1); }

    /** Debugging function to dump instructions in the LSQ. */
    void dumpInsts();
@ -223,7 +225,9 @@ class OzoneLWLSQ {
    void storePostSend(Packet *pkt, DynInstPtr &inst);

    /** Completes the store at the specified index. */
-    void completeStore(int store_idx);
+    void completeStore(DynInstPtr &inst);
+
+    void removeStore(int store_idx);

    /** Handles doing the retry. */
    void recvRetry();
@ -394,6 +398,10 @@ class OzoneLWLSQ {

    int storesToWB;

+  public:
+    int storesInFlight;
+
+  private:
    /// @todo Consider moving to a more advanced model with write vs read ports
    /** The number of cache ports available each cycle. */
    int cachePorts;
@ -403,6 +411,9 @@ class OzoneLWLSQ {

    //list<InstSeqNum> mshrSeqNums;

+    /** Tota number of memory ordering violations. */
+    Stats::Scalar<> lsqMemOrderViolation;
+
     //Stats::Scalar<> dcacheStallCycles;
    Counter lastDcacheStall;

@ -525,7 +536,7 @@ OzoneLWLSQ<Impl>::read(RequestPtr req, T &data, int load_idx)

        store_size = (*sq_it).size;

-        if (store_size == 0) {
+        if (store_size == 0 || (*sq_it).committed) {
            sq_it++;
            continue;
        }
--- a/src/cpu/ozone/lw_lsq_impl.hh
+++ b/src/cpu/ozone/lw_lsq_impl.hh
@ -132,7 +132,7 @@ OzoneLWLSQ<Impl>::completeDataAccess(PacketPtr pkt)
 template <class Impl>
 OzoneLWLSQ<Impl>::OzoneLWLSQ()
    : switchedOut(false), dcachePort(this), loads(0), stores(0),
-      storesToWB(0), stalled(false), isStoreBlocked(false),
+      storesToWB(0), storesInFlight(0), stalled(false), isStoreBlocked(false),
      isLoadBlocked(false), loadBlockedHandled(false)
 {
 }
@ -173,6 +173,11 @@ OzoneLWLSQ<Impl>::name() const

 template<class Impl>
 void
+OzoneLWLSQ<Impl>::regStats()
+{
+    lsqMemOrderViolation
+        .name(name() + ".memOrderViolation")
+        .desc("Number of memory ordering violations");
 OzoneLWLSQ<Impl>::setCPU(OzoneCPU *cpu_ptr)
 {
    cpu = cpu_ptr;
@ -321,7 +326,7 @@ unsigned
 OzoneLWLSQ<Impl>::numFreeEntries()
 {
    unsigned free_lq_entries = LQEntries - loads;
-    unsigned free_sq_entries = SQEntries - stores;
+    unsigned free_sq_entries = SQEntries - (stores + storesInFlight);

    // Both the LQ and SQ entries have an extra dummy entry to differentiate
    // empty/full conditions.  Subtract 1 from the free entries.
@ -385,6 +390,9 @@ OzoneLWLSQ<Impl>::executeLoad(DynInstPtr &inst)
    // Actually probably want the oldest faulting load
    if (load_fault != NoFault) {
        DPRINTF(OzoneLSQ, "Load [sn:%lli] has a fault\n", inst->seqNum);
+        if (!(inst->req->flags & UNCACHEABLE && !inst->isAtCommit())) {
+            inst->setExecuted();
+        }
        // Maybe just set it as can commit here, although that might cause
        // some other problems with sending traps to the ROB too quickly.
        be->instToCommit(inst);
@ -461,6 +469,7 @@ OzoneLWLSQ<Impl>::executeStore(DynInstPtr &store_inst)
                // A load incorrectly passed this store.  Squash and refetch.
                // For now return a fault to show that it was unsuccessful.
                memDepViolator = (*lq_it);
+                ++lsqMemOrderViolation;

                return TheISA::genMachineCheckFault();
            }
@ -553,8 +562,8 @@ OzoneLWLSQ<Impl>::writebackStores()

        if ((*sq_it).size == 0 && !(*sq_it).completed) {
            sq_it--;
-            completeStore(inst->sqIdx);
-
+            removeStore(inst->sqIdx);
+            completeStore(inst);
            continue;
        }

@ -626,6 +635,8 @@ OzoneLWLSQ<Impl>::writebackStores()
                inst->sqIdx,inst->readPC(),
                req->paddr, *(req->data),
                inst->seqNum);
+        DPRINTF(OzoneLSQ, "StoresInFlight: %i\n",
+                storesInFlight + 1);

        if (dcacheInterface) {
            assert(!req->completionEvent);
@ -687,6 +698,8 @@ OzoneLWLSQ<Impl>::writebackStores()
                }
                sq_it--;
            }
+            ++storesInFlight;
+//            removeStore(inst->sqIdx);
        } else {
            panic("Must HAVE DCACHE!!!!!\n");
        }
@ -704,7 +717,7 @@ void
 OzoneLWLSQ<Impl>::squash(const InstSeqNum &squashed_num)
 {
    DPRINTF(OzoneLSQ, "Squashing until [sn:%lli]!"
-            "(Loads:%i Stores:%i)\n",squashed_num,loads,stores);
+            "(Loads:%i Stores:%i)\n",squashed_num,loads,stores+storesInFlight);


    LQIt lq_it = loadQueue.begin();
@ -881,7 +894,7 @@ OzoneLWLSQ<Impl>::writeback(DynInstPtr &inst, PacketPtr pkt)

 template <class Impl>
 void
-OzoneLWLSQ<Impl>::completeStore(int store_idx)
+OzoneLWLSQ<Impl>::removeStore(int store_idx)
 {
    SQHashIt sq_hash_it = SQItHash.find(store_idx);
    assert(sq_hash_it != SQItHash.end());
@ -891,8 +904,6 @@ OzoneLWLSQ<Impl>::completeStore(int store_idx)
    (*sq_it).completed = true;
    DynInstPtr inst = (*sq_it).inst;

-    --storesToWB;
-
    if (isStalled() &&
        inst->seqNum == stallingStoreIsn) {
        DPRINTF(OzoneLSQ, "Unstalling, stalling store [sn:%lli] "
@ -910,6 +921,13 @@ OzoneLWLSQ<Impl>::completeStore(int store_idx)
    SQItHash.erase(sq_hash_it);
    SQIndices.push(inst->sqIdx);
    storeQueue.erase(sq_it);
+}
+
+template <class Impl>
+void
+OzoneLWLSQ<Impl>::completeStore(DynInstPtr &inst)
+{
+    --storesToWB;
    --stores;

    inst->setCompleted();
@ -935,9 +953,14 @@ OzoneLWLSQ<Impl>::switchOut()
    switchedOut = true;

    // Clear the queue to free up resources
+    assert(stores == 0);
+    assert(storeQueue.empty());
+    assert(loads == 0);
+    assert(loadQueue.empty());
+    assert(storesInFlight == 0);
    storeQueue.clear();
    loadQueue.clear();
-    loads = stores = storesToWB = 0;
+    loads = stores = storesToWB = storesInFlight = 0;
 }

 template <class Impl>
--- a/src/cpu/ozone/simple_params.hh
+++ b/src/cpu/ozone/simple_params.hh
@ -71,10 +71,11 @@ class SimpleParams : public BaseCPU::Params

    unsigned cachePorts;
    unsigned width;
+    unsigned frontEndLatency;
    unsigned frontEndWidth;
+    unsigned backEndLatency;
    unsigned backEndWidth;
    unsigned backEndSquashLatency;
-    unsigned backEndLatency;
    unsigned maxInstBufferSize;
    unsigned numPhysicalRegs;
    unsigned maxOutstandingMemOps;
@ -150,6 +151,7 @@ class SimpleParams : public BaseCPU::Params
    //
    unsigned LQEntries;
    unsigned SQEntries;
+    bool lsqLimits;

    //
    // Memory dependence
--- a/src/cpu/ozone/thread_state.hh
+++ b/src/cpu/ozone/thread_state.hh
@ -34,9 +34,12 @@
 #include "arch/faults.hh"
 #include "arch/types.hh"
 #include "arch/regfile.hh"
+#include "base/callback.hh"
+#include "base/output.hh"
 #include "cpu/thread_context.hh"
 #include "cpu/thread_state.hh"
 #include "sim/process.hh"
+#include "sim/sim_exit.hh"

 class Event;
 //class Process;
@ -65,8 +68,21 @@ struct OzoneThreadState : public ThreadState {
 #if FULL_SYSTEM
    OzoneThreadState(CPUType *_cpu, int _thread_num)
        : ThreadState(-1, _thread_num),
-          intrflag(0), inSyscall(0), trapPending(0)
+          cpu(_cpu), intrflag(0), inSyscall(0), trapPending(0)
    {
+        if (cpu->params->profile) {
+            profile = new FunctionProfile(cpu->params->system->kernelSymtab);
+            Callback *cb =
+                new MakeCallback<OzoneThreadState,
+                &OzoneThreadState::dumpFuncProfile>(this);
+            registerExitCallback(cb);
+        }
+
+        // let's fill with a dummy node for now so we don't get a segfault
+        // on the first cycle when there's no node available.
+        static ProfileNode dummyNode;
+        profileNode = &dummyNode;
+        profilePC = 3;
        miscRegFile.clear();
    }
 #else
@ -130,6 +146,14 @@ struct OzoneThreadState : public ThreadState {

    void setNextPC(uint64_t val)
    { nextPC = val; }
+
+#if FULL_SYSTEM
+    void dumpFuncProfile()
+    {
+        std::ostream *os = simout.create(csprintf("profile.%s.dat", cpu->name()));
+        profile->dump(xcProxy, *os);
+    }
+#endif
 };

 #endif // __CPU_OZONE_THREAD_STATE_HH__
--- a/src/cpu/simple/base.cc
+++ b/src/cpu/simple/base.cc
@ -170,7 +170,7 @@ BaseSimpleCPU::regStats()
 void
 BaseSimpleCPU::resetStats()
 {
-    startNumInst = numInst;
+//    startNumInst = numInst;
    // notIdleFraction = (_status != Idle);
 }

--- a/src/cpu/simple_thread.cc
+++ b/src/cpu/simple_thread.cc
@ -162,6 +162,11 @@ SimpleThread::takeOverFrom(ThreadContext *oldContext)
    if (quiesceEvent) {
        quiesceEvent->tc = tc;
    }
+
+    Kernel::Statistics *stats = oldContext->getKernelStats();
+    if (stats) {
+        kernelStats = stats;
+    }
 #endif

    storeCondFailures = 0;
--- a/src/cpu/thread_state.hh
+++ b/src/cpu/thread_state.hh
@ -32,6 +32,7 @@
 #define __CPU_THREAD_STATE_HH__

 #include "arch/types.hh"
+#include "cpu/profile.hh"
 #include "cpu/thread_context.hh"

 #if !FULL_SYSTEM
@ -191,6 +192,21 @@ struct ThreadState {
    // simulation only; all functional memory accesses should use
    // one of the FunctionalMemory pointers above.
    short asid;
+
+#endif
+
+#if FULL_SYSTEM
+    void profileClear()
+    {
+        if (profile)
+            profile->clear();
+    }
+
+    void profileSample()
+    {
+        if (profile)
+            profile->sample(profileNode, profilePC);
+    }
 #endif

    /** Current instruction the thread is committing.  Only set and
--- a/src/dev/ide_disk.hh
+++ b/src/dev/ide_disk.hh
@ -242,6 +242,10 @@ class IdeDisk : public SimObject
    Stats::Scalar<> dmaWriteFullPages;
    Stats::Scalar<> dmaWriteBytes;
    Stats::Scalar<> dmaWriteTxs;
+    Stats::Formula rdBandwidth;
+    Stats::Formula wrBandwidth;
+    Stats::Formula totBandwidth;
+    Stats::Formula totBytes;

  public:
    /**
--- a/src/python/m5/objects/BaseCPU.py
+++ b/src/python/m5/objects/BaseCPU.py
@ -26,6 +26,9 @@ class BaseCPU(SimObject):
        "terminate when all threads have reached this load count")
    max_loads_any_thread = Param.Counter(0,
        "terminate when any thread reaches this load count")
+    stats_reset_inst = Param.Counter(0,
+        "reset stats once this many instructions are committed")
+    progress_interval = Param.Tick(0, "interval to print out the progress message")

    defer_registration = Param.Bool(False,
        "defer registration with system (for sampling)")
--- a/src/python/m5/objects/O3CPU.py
+++ b/src/python/m5/objects/O3CPU.py
@ -9,6 +9,8 @@ class DerivO3CPU(BaseCPU):
    activity = Param.Unsigned(0, "Initial count")
    numThreads = Param.Unsigned(1, "number of HW thread contexts")

+    if build_env['FULL_SYSTEM']:
+        profile = Param.Latency('0ns', "trace the kernel stack")
    if build_env['USE_CHECKER']:
        if not build_env['FULL_SYSTEM']:
            checker = Param.BaseCPU(O3Checker(workload=Parent.workload,
--- a/src/python/m5/objects/OzoneCPU.py
+++ b/src/python/m5/objects/OzoneCPU.py
@ -8,12 +8,15 @@ class DerivOzoneCPU(BaseCPU):
    numThreads = Param.Unsigned("number of HW thread contexts")

    checker = Param.BaseCPU("Checker CPU")
+    if build_env['FULL_SYSTEM']:
+        profile = Param.Latency('0ns', "trace the kernel stack")

    icache_port = Port("Instruction Port")
    dcache_port = Port("Data Port")

    width = Param.Unsigned("Width")
    frontEndWidth = Param.Unsigned("Front end width")
+    frontEndLatency = Param.Unsigned("Front end latency")
    backEndWidth = Param.Unsigned("Back end width")
    backEndSquashLatency = Param.Unsigned("Back end squash latency")
    backEndLatency = Param.Unsigned("Back end latency")
@ -76,6 +79,7 @@ class DerivOzoneCPU(BaseCPU):

    LQEntries = Param.Unsigned("Number of load queue entries")
    SQEntries = Param.Unsigned("Number of store queue entries")
+    lsqLimits = Param.Bool(True, "LSQ size limits dispatch")
    LFSTSize = Param.Unsigned("Last fetched store table size")
    SSITSize = Param.Unsigned("Store set ID table size")

--- a/src/python/m5/objects/Root.py
+++ b/src/python/m5/objects/Root.py
@ -1,6 +1,7 @@
 from m5.SimObject import SimObject
 from m5.params import *
 from Serialize import Serialize
+from Serialize import Statreset
 from Statistics import Statistics
 from Trace import Trace
 from ExeTrace import ExecutionTrace
--- a/src/python/m5/objects/System.py
+++ b/src/python/m5/objects/System.py
@ -16,6 +16,7 @@ class System(SimObject):
        boot_osflags = Param.String("a", "boot flags to pass to the kernel")
        kernel = Param.String("file that contains the kernel code")
        readfile = Param.String("", "file to read startup script from")
+        symbolfile = Param.String("", "file to get the symbols from")

 class AlphaSystem(System):
    type = 'AlphaSystem'
--- a/src/sim/eventq.hh
+++ b/src/sim/eventq.hh
@ -46,6 +46,7 @@
 #include "sim/host.hh"	// for Tick

 #include "base/fast_alloc.hh"
+#include "base/misc.hh"
 #include "base/trace.hh"
 #include "sim/serialize.hh"

@ -135,7 +136,7 @@ class Event : public Serializable, public FastAlloc
        /// same cycle (after unscheduling the old CPU's tick event).
        /// The switch needs to come before any tick events to make
        /// sure we don't tick both CPUs in the same cycle.
-        CPU_Switch_Pri		=   31,
+        CPU_Switch_Pri		=   -31,

        /// Serailization needs to occur before tick events also, so
        /// that a serialize/unserialize is identical to an on-line
@ -351,7 +352,8 @@ inline void
 Event::schedule(Tick t)
 {
    assert(!scheduled());
-    assert(t >= curTick);
+//    if (t < curTick)
+//        warn("t is less than curTick, ensure you don't want cycles");

    setFlags(Scheduled);
 #if TRACING_ON
--- a/src/sim/pseudo_inst.cc
+++ b/src/sim/pseudo_inst.cc
@ -148,6 +148,54 @@ namespace AlphaPseudo
        exitSimLoop(when, "m5_exit instruction encountered");
    }

+    void
+    loadsymbol(ExecContext *xc)
+    {
+        const string &filename = xc->getCpuPtr()->system->params()->symbolfile;
+        if (filename.empty()) {
+            return;
+        }
+
+        std::string buffer;
+        ifstream file(filename.c_str());
+
+        if (!file)
+            fatal("file error: Can't open symbol table file %s\n", filename);
+
+        while (!file.eof()) {
+            getline(file, buffer);
+
+            if (buffer.empty())
+                continue;
+
+            int idx = buffer.find(' ');
+            if (idx == string::npos)
+                continue;
+
+            string address = "0x" + buffer.substr(0, idx);
+            eat_white(address);
+            if (address.empty())
+                continue;
+
+            // Skip over letter and space
+            string symbol = buffer.substr(idx + 3);
+            eat_white(symbol);
+            if (symbol.empty())
+                continue;
+
+            Addr addr;
+            if (!to_number(address, addr))
+                continue;
+
+            if (!xc->getSystemPtr()->kernelSymtab->insert(addr, symbol))
+                continue;
+
+
+            DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
+        }
+        file.close();
+    }
+
    void
    resetstats(ThreadContext *tc, Tick delay, Tick period)
    {
--- a/src/sim/pseudo_inst.hh
+++ b/src/sim/pseudo_inst.hh
@ -51,6 +51,7 @@ namespace AlphaPseudo
    void ivle(ThreadContext *tc);
    void m5exit(ThreadContext *tc, Tick delay);
    void m5exit_old(ThreadContext *tc);
+    void loadsymbol(ThreadContext *xc);
    void resetstats(ThreadContext *tc, Tick delay, Tick period);
    void dumpstats(ThreadContext *tc, Tick delay, Tick period);
    void dumpresetstats(ThreadContext *tc, Tick delay, Tick period);
--- a/src/sim/serialize.cc
+++ b/src/sim/serialize.cc
@ -52,6 +52,9 @@
 #include "sim/sim_exit.hh"
 #include "sim/sim_object.hh"

+// For stat reset hack
+#include "sim/stat_control.hh"
+
 using namespace std;

 int Serializable::ckptMaxCount = 0;
@ -404,3 +407,36 @@ Checkpoint::sectionExists(const std::string &section)
 {
    return db->sectionExists(section);
 }
+
+/** Hacked stat reset event */
+
+class StatresetParamContext : public ParamContext
+{
+  public:
+    StatresetParamContext(const string &section);
+    ~StatresetParamContext();
+    void startup();
+};
+
+StatresetParamContext statParams("statsreset");
+
+Param<Tick> reset_cycle(&statParams, "reset_cycle",
+                        "Cycle to reset stats on", 0);
+
+StatresetParamContext::StatresetParamContext(const string &section)
+    : ParamContext(section)
+{ }
+
+StatresetParamContext::~StatresetParamContext()
+{
+}
+
+void
+StatresetParamContext::startup()
+{
+    if (reset_cycle > 0) {
+        Stats::SetupEvent(Stats::Reset, curTick + reset_cycle, 0);
+        cprintf("Stats reset event scheduled for %lli\n",
+                curTick + reset_cycle);
+    }
+}
--- a/src/sim/stat_control.cc
+++ b/src/sim/stat_control.cc
@ -160,13 +160,13 @@ class StatEvent : public Event
    Tick repeat;

  public:
-    StatEvent(int _flags, Tick _when, Tick _repeat);
+    StatEvent(EventQueue *queue, int _flags, Tick _when, Tick _repeat);
    virtual void process();
    virtual const char *description();
 };

-StatEvent::StatEvent(int _flags, Tick _when, Tick _repeat)
-    : Event(&mainEventQueue, Stat_Event_Pri),
+StatEvent::StatEvent(EventQueue *queue, int _flags, Tick _when, Tick _repeat)
+    : Event(queue, Stat_Event_Pri),
      flags(_flags), repeat(_repeat)
 {
    setFlags(AutoDelete);
@ -185,8 +185,10 @@ StatEvent::process()
    if (flags & Stats::Dump)
        DumpNow();

-    if (flags & Stats::Reset)
+    if (flags & Stats::Reset) {
+        cprintf("Resetting stats!\n");
        reset();
+    }

    if (repeat)
        schedule(curTick + repeat);
@ -214,9 +216,12 @@ DumpNow()
 }

 void
-SetupEvent(int flags, Tick when, Tick repeat)
+SetupEvent(int flags, Tick when, Tick repeat, EventQueue *queue)
 {
-    new StatEvent(flags, when, repeat);
+    if (queue == NULL)
+        queue = &mainEventQueue;
+
+    new StatEvent(queue, flags, when, repeat);
 }

 /* namespace Stats */ }
--- a/src/sim/stat_control.hh
+++ b/src/sim/stat_control.hh
@ -34,6 +34,8 @@
 #include <fstream>
 #include <list>

+class EventQueue;
+
 namespace Stats {

 enum {
@ -45,7 +47,7 @@ class Output;
 extern std::list<Output *> OutputList;

 void DumpNow();
-void SetupEvent(int flags, Tick when, Tick repeat = 0);
+void SetupEvent(int flags, Tick when, Tick repeat = 0, EventQueue *queue = NULL);

 void InitSimStats();

--- a/src/sim/system.hh
+++ b/src/sim/system.hh
@ -182,6 +182,7 @@ class System : public SimObject

        std::string kernel_path;
        std::string readfile;
+        std::string symbolfile;
 #endif
    };

--- a/util/batch/batch.py
+++ b/util/batch/batch.py
@ -0,0 +1,249 @@
+# Copyright (c) 2006 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Kevin Lim
+
+import os, popen2, re, sys
+
+class MyPOpen(object):
+    def __init__(self, cmd, input = None, output = None, bufsize = -1):
+        self.status = -1
+
+        if input is None:
+            p2c_read, p2c_write = os.pipe()
+            self.tochild = os.fdopen(p2c_write, 'w', bufsize)
+        else:
+            p2c_write = None
+            if isinstance(input, file):
+                p2c_read = input.fileno()
+            elif isinstance(input, str):
+                input = file(input, 'r')
+                p2c_read = input.fileno()
+            elif isinstance(input, int):
+                p2c_read = input
+            else:
+                raise AttributeError
+
+        if output is None:
+            c2p_read, c2p_write = os.pipe()
+            self.fromchild = os.fdopen(c2p_read, 'r', bufsize)
+        else:
+            c2p_read = None
+            if isinstance(output, file):
+                c2p_write = output.fileno()
+            elif isinstance(output, str):
+                output = file(output, 'w')
+                c2p_write = output.fileno()
+            elif isinstance(output, int):
+                c2p_write = output
+            else:
+                raise AttributeError
+
+        self.pid = os.fork()
+        if self.pid == 0:
+            os.dup2(p2c_read, sys.stdin.fileno())
+            os.dup2(c2p_write, sys.stdout.fileno())
+            os.dup2(c2p_write, sys.stderr.fileno())
+            try:
+                os.execvp(cmd[0], cmd)
+            finally:
+                os._exit(1)
+
+        os.close(p2c_read)
+        os.close(c2p_write)
+
+    def poll(self):
+        if self.status < 0:
+            pid, status = os.waitpid(self.pid, os.WNOHANG)
+            if pid == self.pid:
+                self.status = status
+        return self.status
+
+    def wait(self):
+        if self.status < 0:
+            pid, status = os.waitpid(self.pid, 0)
+            if pid == self.pid:
+                self.status = status
+        return self.status
+
+
+class oarsub:
+    def __init__(self):
+        self.walltime = None
+        self.queue = None
+        self.properties = None
+
+        # OAR 2.0 parameters only!
+        self.name = None
+        self.afterok = None
+        self.notify = None
+        self.stderr = None
+        self.stdout = None
+
+
+        self.oarhost = None
+        self.oarsub = 'oarsub'
+
+        self.jobid = re.compile('IdJob = (\S+)')
+        #self.outfile = open("jobnames.dat", "a+")
+
+    def build(self, script, args = []):
+        self.cmd = [ self.oarsub ]
+
+        print "args:", args
+        print "script:", script
+        if self.properties:
+            self.cmd.append('-p"%s"' % self.properties )
+
+        if self.queue:
+            self.cmd.append('-q "%s"' % self.queue)
+
+        if self.walltime:
+            self.cmd.append('-l walltime=%s' % self.walltime)
+
+        if script[0] != "/":
+            self.script = os.getcwd()
+        else:
+            self.script = script
+
+        self.cmd.extend(args)
+        self.cmd.append(self.script)
+        #cmd = [ 'ssh', '-x', self.oarhost,  '"cd %s; %s"' % (os.getcwd(), self.command) ]
+        self.command = ' '.join(self.cmd)
+
+        print "command: [%s]" % self.command
+
+    def do(self):
+        oar = MyPOpen(self.cmd)
+        self.result = oar.fromchild.read()
+        ec = oar.wait()
+
+        if ec != 0 and self.oarhost:
+            pstdin, pstdout = os.popen4(self.command)
+            self.result = pstdout.read()
+
+        jobid = self.jobid.match(self.result)
+        if jobid == None:
+            print "Couldn't get jobid from [%s]" % self.result
+            sys.exit(1)
+        else:
+            #self.outfile.write("%d %s\n" %(int(jobid.group(1)), self.name));
+            #self.outfile.flush()
+            self.result = jobid.group(1)
+
+        return 0
+
+class qsub:
+    def __init__(self):
+        self.afterok = None
+        self.hold = False
+        self.join = False
+        self.keep_stdout = False
+        self.keep_stderr = False
+        self.node_type = None
+        self.mail_abort = False
+        self.mail_begin = False
+        self.mail_end = False
+        self.name = None
+        self.stdout = None
+        self.priority = None
+        self.queue = None
+        self.pbshost = None
+        self.qsub = 'qsub'
+        self.env = {}
+
+    def build(self, script, args = []):
+        self.cmd = [ self.qsub ]
+
+        if self.env:
+            arg = '-v'
+            arg += ','.join([ '%s=%s' % i for i in self.env.iteritems() ])
+            self.cmd.append(arg)
+
+        if self.hold:
+            self.cmd.append('-h')
+
+        if self.stdout:
+            self.cmd.append('-olocalhost:' + self.stdout)
+
+        if self.keep_stdout and self.keep_stderr:
+            self.cmd.append('-koe')
+        elif self.keep_stdout:
+            self.cmd.append('-ko')
+        elif self.keep_stderr:
+            self.cmd.append('-ke')
+        else:
+            self.cmd.append('-kn')
+
+        if self.join:
+            self.cmd.append('-joe')
+
+        if self.node_type:
+            self.cmd.append('-lnodes=' + self.node_type)
+
+        if self.mail_abort or self.mail_begin or self.mail_end:
+            flags = ''
+            if self.mail_abort:
+                flags.append('a')
+            if self.mail_begin:
+                flags.append('b')
+            if self.mail_end:
+                flags.append('e')
+            if len(flags):
+                self.cmd.append('-m ' + flags)
+        else:
+            self.cmd.append('-mn')
+
+        if self.name:
+            self.cmd.append("-N%s" % self.name)
+
+        if self.priority:
+            self.cmd.append('-p' + self.priority)
+
+        if self.queue:
+            self.cmd.append('-q' + self.queue)
+
+        if self.afterok:
+            self.cmd.append('-Wdepend=afterok:%s' % self.afterok)
+
+        self.cmd.extend(args)
+        self.script = script
+        self.command = ' '.join(self.cmd + [ self.script ])
+
+    def do(self):
+        pbs = MyPOpen(self.cmd + [ self.script ])
+        self.result = pbs.fromchild.read()
+        ec = pbs.wait()
+
+        if ec != 0 and self.pbshost:
+            cmd = ' '.join(self.cmd + [ '-' ])
+            cmd = [ 'ssh', '-x', self.pbshost, cmd ]
+            self.command = ' '.join(cmd)
+            ssh = MyPOpen(cmd, input = self.script)
+            self.result = ssh.fromchild.read()
+            ec = ssh.wait()
+
+        return ec
--- a/util/batch/job.py
+++ b/util/batch/job.py
@ -0,0 +1,246 @@
+#!/usr/bin/env python
+# Copyright (c) 2006 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Kevin Lim
+
+import os, os.path, shutil, signal, socket, sys
+from os import environ as env
+from os.path import join as joinpath, expanduser
+
+def date():
+    import time
+    return time.strftime('%a %b %e %H:%M:%S %Z %Y', time.localtime())
+
+def cleandir(dir):
+    for root, dirs, files in os.walk(dir, False):
+        for name in files:
+            os.remove(joinpath(root, name))
+        for name in dirs:
+            os.rmdir(joinpath(root, name))
+
+class rsync:
+    def __init__(self):
+        self.sudo = False
+        self.rsync = 'rsync'
+        self.compress = False
+        self.archive = True
+        self.delete = False
+        self.options = ''
+
+    def do(self, src, dst):
+        args = []
+        if self.sudo:
+            args.append('sudo')
+
+        args.append(self.rsync)
+        if (self.archive):
+            args.append('-a')
+        if (self.compress):
+            args.append('-z')
+        if (self.delete):
+            args.append('--delete')
+        if len(self.options):
+            args.append(self.options)
+        args.append(src)
+        args.append(dst)
+
+        return os.spawnvp(os.P_WAIT, args[0], args)
+
+class JobDir(object):
+    def __init__(self, dir):
+        self.dir = dir
+
+    def file(self, filename):
+        return joinpath(self.dir, filename)
+
+    def create(self):
+        if os.path.exists(self.dir):
+            if not os.path.isdir(self.dir):
+                sys.exit('%s is not a directory.  Cannot build job' % self.dir)
+        else:
+            os.mkdir(self.dir)
+
+    def exists(self):
+        return os.path.isdir(self.dir)
+
+    def clean(self):
+        cleandir(self.dir)
+
+    def hasfile(self, filename):
+        return os.path.isfile(self.file(filename))
+
+    def echofile(self, filename, string):
+        filename = self.file(filename)
+        try:
+            f = file(filename, 'w')
+            print >>f, string
+            f.flush()
+            f.close()
+        except IOError,e:
+            sys.exit(e)
+
+    def rmfile(self, filename):
+        filename = self.file(filename)
+        if os.path.isfile(filename):
+            os.unlink(filename)
+
+    def readval(self, filename):
+        filename = self.file(filename)
+        f = file(filename, 'r')
+        value = f.readline().strip()
+        f.close()
+        return value
+
+    def setstatus(self, string):
+        filename = self.file('.status')
+        try:
+            f = file(filename, 'a')
+            print >>f, string
+            f.flush()
+            f.close()
+        except IOError,e:
+            sys.exit(e)
+
+    def getstatus(self):
+        filename = self.file('.status')
+        try:
+            f = file(filename, 'r')
+        except IOError, e:
+            return 'none'
+
+        # fast forward to the end
+        for line in f: pass
+
+        # the first word on the last line is the status
+        return line.split(' ')[0]
+
+    def __str__(self):
+        return self.dir
+
+if __name__ == '__main__':
+    import platform
+    binaries = { 'i686' : 'm5.i386',
+                 'x86_64' : 'm5.amd64' }
+    binary = binaries[platform.machine()]
+
+    cwd = os.getcwd()
+    rootdir = env.setdefault('ROOTDIR', os.path.dirname(cwd))
+    oar_jobid = int(env['OAR_JOBID'])
+    oar_jobname = os.path.basename(cwd)
+    #pbs_jobname = env['PBS_JOBNAME']
+    basedir = joinpath(rootdir, 'Base')
+    jobname = env.setdefault('JOBNAME', oar_jobname)
+    jobfile = env.setdefault('JOBFILE', joinpath(rootdir, 'Test.py'))
+    outdir = env.setdefault('OUTPUT_DIR', cwd)
+    env['POOLJOB'] = 'True'
+
+    if os.path.isdir("/work"):
+        workbase = "/work"
+    else:
+        workbase = "/tmp/"
+
+    workdir = joinpath(workbase, '%s.%s' % (env['USER'], oar_jobid))
+    host = socket.gethostname()
+
+    os.umask(0022)
+
+    jobdir = JobDir(outdir)
+
+    started = date()
+    jobdir.echofile('.running', started)
+    jobdir.rmfile('.queued')
+    jobdir.echofile('.host', host)
+
+    jobdir.setstatus('running on %s on %s' % (host, started))
+
+    if os.path.isdir(workdir):
+        cleandir(workdir)
+    else:
+        os.mkdir(workdir)
+
+    if False and os.path.isdir('/z/dist'):
+        sync = rsync()
+        sync.delete = True
+        sync.sudo = True
+        sync.do('poolfs::dist/m5/', '/z/dist/m5/')
+
+    try:
+        os.chdir(workdir)
+    except OSError,e:
+        sys.exit(e)
+
+    os.symlink(jobdir.file('output'), 'status.out')
+
+    args = [ joinpath(basedir, binary), joinpath(basedir, 'run.py') ]
+    if not len(args):
+        sys.exit("no arguments")
+
+    print 'starting job... %s' % started
+    print ' '.join(args)
+    print
+    sys.stdout.flush()
+
+    childpid = os.fork()
+    if not childpid:
+        # Execute command
+        sys.stdin.close()
+        fd = os.open(jobdir.file("output"),
+                     os.O_WRONLY | os.O_CREAT | os.O_TRUNC)
+        os.dup2(fd, sys.stdout.fileno())
+        os.dup2(fd, sys.stderr.fileno())
+        os.execvp(args[0], args)
+
+    def handler(signum, frame):
+        if childpid != 0:
+            os.kill(childpid, signum)
+
+    signal.signal(signal.SIGHUP, handler)
+    signal.signal(signal.SIGINT, handler)
+    signal.signal(signal.SIGQUIT, handler)
+    signal.signal(signal.SIGTERM, handler)
+    signal.signal(signal.SIGCONT, handler)
+    signal.signal(signal.SIGUSR1, handler)
+    signal.signal(signal.SIGUSR2, handler)
+
+    done = 0
+    while not done:
+        try:
+            thepid,ec = os.waitpid(childpid, 0)
+            if ec:
+                print 'Exit code ', ec
+                status = 'failure'
+            else:
+                status = 'success'
+            done = 1
+        except OSError:
+            pass
+
+    complete = date()
+    print '\njob complete... %s' % complete
+    jobdir.echofile('.%s' % status, complete)
+    jobdir.rmfile('.running')
+    jobdir.setstatus('%s on %s' % (status, complete))
--- a/util/batch/jobfile.py
+++ b/util/batch/jobfile.py
@ -0,0 +1,539 @@
+# Copyright (c) 2006 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Kevin Lim
+
+import sys
+
+class ternary(object):
+    def __new__(cls, *args):
+        if len(args) > 1:
+            raise TypeError, \
+                  '%s() takes at most 1 argument (%d given)' % \
+                  (cls.__name__, len(args))
+
+        if args:
+            if not isinstance(args[0], (bool, ternary)):
+                raise TypeError, \
+                      '%s() argument must be True, False, or Any' % \
+                      cls.__name__
+            return args[0]
+        return super(ternary, cls).__new__(cls)
+
+    def __bool__(self):
+        return True
+
+    def __neg__(self):
+        return self
+
+    def __eq__(self, other):
+        return True
+
+    def __ne__(self, other):
+        return False
+
+    def __str__(self):
+        return 'Any'
+
+    def __repr__(self):
+        return 'Any'
+
+Any = ternary()
+
+class Flags(dict):
+    def __init__(self, *args, **kwargs):
+        super(Flags, self).__init__()
+        self.update(*args, **kwargs)
+
+    def __getattr__(self, attr):
+        return self[attr]
+
+    def __setattr__(self, attr, value):
+        self[attr] = value
+
+    def __setitem__(self, item, value):
+        return super(Flags, self).__setitem__(item, ternary(value))
+
+    def __getitem__(self, item):
+        if item not in self:
+            return False
+        return super(Flags, self).__getitem__(item)
+
+    def update(self, *args, **kwargs):
+        for arg in args:
+            if isinstance(arg, Flags):
+                super(Flags, self).update(arg)
+            elif isinstance(arg, dict):
+                for key,val in kwargs.iteritems():
+                    self[key] = val
+            else:
+                raise AttributeError, \
+                      'flags not of type %s or %s, but %s' % \
+                      (Flags, dict, type(arg))
+
+        for key,val in kwargs.iteritems():
+            self[key] = val
+
+    def match(self, *args, **kwargs):
+        match = Flags(*args, **kwargs)
+
+        for key,value in match.iteritems():
+            if self[key] != value:
+                return False
+
+        return True
+
+def crossproduct(items):
+    if not isinstance(items, (list, tuple)):
+        raise AttributeError, 'crossproduct works only on sequences'
+
+    if not items:
+        yield None
+        return
+
+    current = items[0]
+    remainder = items[1:]
+
+    if not hasattr(current, '__iter__'):
+        current = [ current ]
+
+    for item in current:
+        for rem in crossproduct(remainder):
+            data = [ item ]
+            if rem:
+                data += rem
+            yield data
+
+def flatten(items):
+    if not isinstance(items, (list, tuple)):
+        yield items
+        return
+
+    for item in items:
+        for flat in flatten(item):
+            yield flat
+
+class Data(object):
+    def __init__(self, name, desc, **kwargs):
+        self.name = name
+        self.desc = desc
+        self.system = None
+        self.flags = Flags()
+        self.env = {}
+        for k,v in kwargs.iteritems():
+            setattr(self, k, v)
+
+    def update(self, obj):
+        if not isinstance(obj, Data):
+            raise AttributeError, "can only update from Data object"
+
+        self.env.update(obj.env)
+        self.flags.update(obj.flags)
+        if obj.system:
+            if self.system and self.system != obj.system:
+                raise AttributeError, \
+                      "conflicting values for system: '%s'/'%s'" % \
+                      (self.system, obj.system)
+            self.system = obj.system
+
+    def printinfo(self):
+        if self.name:
+            print 'name: %s' % self.name
+        if self.desc:
+            print 'desc: %s' % self.desc
+        if self.system:
+            print 'system: %s' % self.system
+
+    def printverbose(self):
+        print 'flags:'
+        keys = self.flags.keys()
+        keys.sort()
+        for key in keys:
+            print '    %s = %s' % (key, self.flags[key])
+        print 'env:'
+        keys = self.env.keys()
+        keys.sort()
+        for key in keys:
+            print '    %s = %s' % (key, self.env[key])
+        print
+
+    def __str__(self):
+        return self.name
+
+class Job(Data):
+    def __init__(self, options):
+        super(Job, self).__init__('', '')
+        self.setoptions(options)
+
+        self.checkpoint = False
+        opts = []
+        for opt in options:
+            cpt = opt.group.checkpoint
+            if not cpt:
+                self.checkpoint = True
+                continue
+            if isinstance(cpt, Option):
+                opt = cpt.clone(suboptions=False)
+            else:
+                opt = opt.clone(suboptions=False)
+
+            opts.append(opt)
+
+        if not opts:
+            self.checkpoint = False
+
+        if self.checkpoint:
+            self.checkpoint = Job(opts)
+
+    def clone(self):
+        return Job(self.options)
+
+    def __getattribute__(self, attr):
+        if attr == 'name':
+            names = [ ]
+            for opt in self.options:
+                if opt.name:
+                    names.append(opt.name)
+            return ':'.join(names)
+
+        if attr == 'desc':
+            descs = [ ]
+            for opt in self.options:
+                if opt.desc:
+                    descs.append(opt.desc)
+            return ', '.join(descs)
+
+        return super(Job, self).__getattribute__(attr)
+
+    def setoptions(self, options):
+        config = options[0].config
+        for opt in options:
+            if opt.config != config:
+                raise AttributeError, \
+                      "All options are not from the same Configuration"
+
+        self.config = config
+        self.groups = [ opt.group for opt in options ]
+        self.options = options
+
+        self.update(self.config)
+        for group in self.groups:
+            self.update(group)
+
+        for option in self.options:
+            self.update(option)
+            if option._suboption:
+                self.update(option._suboption)
+
+    def printinfo(self):
+        super(Job, self).printinfo()
+        if self.checkpoint:
+            print 'checkpoint: %s' % self.checkpoint.name
+        print 'config: %s' % self.config.name
+        print 'groups: %s' % [ g.name for g in self.groups ]
+        print 'options: %s' % [ o.name for o in self.options ]
+        super(Job, self).printverbose()
+
+class SubOption(Data):
+    def __init__(self, name, desc, **kwargs):
+        super(SubOption, self).__init__(name, desc, **kwargs)
+        self.number = None
+
+class Option(Data):
+    def __init__(self, name, desc, **kwargs):
+        super(Option, self).__init__(name, desc, **kwargs)
+        self._suboptions = []
+        self._suboption = None
+        self.number = None
+
+    def __getattribute__(self, attr):
+        if attr == 'name':
+            name = self.__dict__[attr]
+            if self._suboption is not None:
+                name = '%s:%s' % (name, self._suboption.name)
+            return name
+
+        if attr == 'desc':
+            desc = [ self.__dict__[attr] ]
+            if self._suboption is not None and self._suboption.desc:
+                desc.append(self._suboption.desc)
+            return ', '.join(desc)
+
+
+        return super(Option, self).__getattribute__(attr)
+
+    def suboption(self, name, desc, **kwargs):
+        subo = SubOption(name, desc, **kwargs)
+        subo.config = self.config
+        subo.group = self.group
+        subo.option = self
+        subo.number = len(self._suboptions)
+        self._suboptions.append(subo)
+        return subo
+
+    def clone(self, suboptions=True):
+        option = Option(self.__dict__['name'], self.__dict__['desc'])
+        option.update(self)
+        option.group = self.group
+        option.config = self.config
+        option.number = self.number
+        if suboptions:
+            option._suboptions.extend(self._suboptions)
+            option._suboption = self._suboption
+        return option
+
+    def subopts(self):
+        if not self._suboptions:
+            return [ self ]
+
+        subopts = []
+        for subo in self._suboptions:
+            option = self.clone()
+            option._suboption = subo
+            subopts.append(option)
+
+        return subopts
+
+    def printinfo(self):
+        super(Option, self).printinfo()
+        print 'config: %s' % self.config.name
+        super(Option, self).printverbose()
+
+class Group(Data):
+    def __init__(self, name, desc, **kwargs):
+        super(Group, self).__init__(name, desc, **kwargs)
+        self._options = []
+        self.checkpoint = False
+        self.number = None
+
+    def option(self, name, desc, **kwargs):
+        opt = Option(name, desc, **kwargs)
+        opt.config = self.config
+        opt.group = self
+        opt.number = len(self._options)
+        self._options.append(opt)
+        return opt
+
+    def options(self):
+        return self._options
+
+    def subopts(self):
+        subopts = []
+        for opt in self._options:
+            for subo in opt.subopts():
+                subopts.append(subo)
+        return subopts
+
+    def printinfo(self):
+        super(Group, self).printinfo()
+        print 'config: %s' % self.config.name
+        print 'options: %s' % [ o.name for o in self._options ]
+        super(Group, self).printverbose()
+
+class Configuration(Data):
+    def __init__(self, name, desc, **kwargs):
+        super(Configuration, self).__init__(name, desc, **kwargs)
+        self._groups = []
+        self._posfilters = []
+        self._negfilters = []
+
+    def group(self, name, desc, **kwargs):
+        grp = Group(name, desc, **kwargs)
+        grp.config = self
+        grp.number = len(self._groups)
+        self._groups.append(grp)
+        return grp
+
+    def groups(self, flags=Flags(), sign=True):
+        if not flags:
+            return self._groups
+
+        return [ grp for grp in self._groups if sign ^ grp.flags.match(flags) ]
+
+    def checkchildren(self, kids):
+        for kid in kids:
+            if kid.config != self:
+                raise AttributeError, "child from the wrong configuration"
+
+    def sortgroups(self, groups):
+        groups = [ (grp.number, grp) for grp in groups ]
+        groups.sort()
+        return [ grp[1] for grp in groups ]
+
+    def options(self, groups = None, checkpoint = False):
+        if groups is None:
+            groups = self._groups
+        self.checkchildren(groups)
+        groups = self.sortgroups(groups)
+        if checkpoint:
+            groups = [ grp for grp in groups if grp.checkpoint ]
+            optgroups = [ g.options() for g in groups ]
+        else:
+            optgroups = [ g.subopts() for g in groups ]
+        for options in crossproduct(optgroups):
+            for opt in options:
+                cpt = opt.group.checkpoint
+                if not isinstance(cpt, bool) and cpt != opt:
+                    if checkpoint:
+                        break
+                    else:
+                        yield options
+            else:
+                if checkpoint:
+                    yield options
+
+    def addfilter(self, filt, pos=True):
+        import re
+        filt = re.compile(filt)
+        if pos:
+            self._posfilters.append(filt)
+        else:
+            self._negfilters.append(filt)
+
+    def jobfilter(self, job):
+        for filt in self._negfilters:
+            if filt.match(job.name):
+                return False
+
+        if not self._posfilters:
+            return True
+
+        for filt in self._posfilters:
+            if filt.match(job.name):
+                return True
+
+        return False
+
+    def checkpoints(self, groups = None):
+        for options in self.options(groups, True):
+            job = Job(options)
+            if self.jobfilter(job):
+                yield job
+
+    def jobs(self, groups = None):
+        for options in self.options(groups, False):
+            job = Job(options)
+            if self.jobfilter(job):
+                yield job
+
+    def alljobs(self, groups = None):
+        for options in self.options(groups, True):
+            yield Job(options)
+        for options in self.options(groups, False):
+            yield Job(options)
+
+    def find(self, jobname):
+        for job in self.alljobs():
+            if job.name == jobname:
+                return job
+        else:
+            raise AttributeError, "job '%s' not found" % jobname
+
+    def job(self, options):
+        self.checkchildren(options)
+        options = [ (opt.group.number, opt) for opt in options ]
+        options.sort()
+        options = [ opt[1] for opt in options ]
+        job = Job(options)
+        return job
+
+    def printinfo(self):
+        super(Configuration, self).printinfo()
+        print 'groups: %s' % [ g.name for g in self._grouips ]
+        super(Configuration, self).printverbose()
+
+def JobFile(jobfile):
+    from os.path import expanduser, isfile, join as joinpath
+    filename = expanduser(jobfile)
+
+    # Can't find filename in the current path, search sys.path
+    if not isfile(filename):
+        for path in sys.path:
+            testname = joinpath(path, filename)
+            if isfile(testname):
+                filename = testname
+                break
+        else:
+            raise AttributeError, \
+                  "Could not find file '%s'" % jobfile
+
+    data = {}
+    execfile(filename, data)
+    if 'conf' not in data:
+        raise ImportError, 'cannot import name conf from %s' % jobfile
+    conf = data['conf']
+    import jobfile
+    if not isinstance(conf, Configuration):
+        raise AttributeError, \
+              'conf in jobfile: %s (%s) is not type %s' % \
+              (jobfile, type(conf), Configuration)
+    return conf
+
+if __name__ == '__main__':
+    from jobfile import *
+    import sys
+
+    usage = 'Usage: %s [-b] [-c] [-v] <jobfile>' % sys.argv[0]
+
+    try:
+        import getopt
+        opts, args = getopt.getopt(sys.argv[1:], '-bcv')
+    except getopt.GetoptError:
+        sys.exit(usage)
+
+    if len(args) != 1:
+        raise AttributeError, usage
+
+    both = False
+    checkpoint = False
+    verbose = False
+    for opt,arg in opts:
+        if opt == '-b':
+            both = True
+            checkpoint = True
+        if opt == '-c':
+            checkpoint = True
+        if opt == '-v':
+            verbose = True
+
+    jobfile = args[0]
+    conf = JobFile(jobfile)
+
+    if both:
+        gen = conf.alljobs()
+    elif checkpoint:
+        gen = conf.checkpoints()
+    else:
+        gen = conf.jobs()
+
+    for job in gen:
+        if not verbose:
+            cpt = ''
+            if job.checkpoint:
+                cpt = job.checkpoint.name
+            print job.name, cpt
+        else:
+            job.printinfo()
--- a/util/batch/send.py
+++ b/util/batch/send.py
@ -0,0 +1,306 @@
+#!/usr/bin/env python
+# Copyright (c) 2006 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Kevin Lim
+
+import os, os.path, re, socket, sys
+from os import environ as env, listdir
+from os.path import basename, isdir, isfile, islink, join as joinpath, normpath
+from filecmp import cmp as filecmp
+from shutil import copy
+
+def nfspath(dir):
+    if dir.startswith('/.automount/'):
+        dir = '/n/%s' % dir[12:]
+    elif not dir.startswith('/n/'):
+        dir = '/n/%s%s' % (socket.gethostname().split('.')[0], dir)
+    return dir
+
+def syncdir(srcdir, destdir):
+    srcdir = normpath(srcdir)
+    destdir = normpath(destdir)
+    if not isdir(destdir):
+        sys.exit('destination directory "%s" does not exist' % destdir)
+
+    for root, dirs, files in os.walk(srcdir):
+        root = normpath(root)
+        prefix = os.path.commonprefix([root, srcdir])
+        root = root[len(prefix):]
+        if root.startswith('/'):
+            root = root[1:]
+        for rem in [ d for d in dirs if d.startswith('.') or d == 'SCCS']:
+            dirs.remove(rem)
+
+        for entry in dirs:
+            newdir = joinpath(destdir, root, entry)
+            if not isdir(newdir):
+                os.mkdir(newdir)
+                print 'mkdir', newdir
+
+        for i,d in enumerate(dirs):
+            if islink(joinpath(srcdir, root, d)):
+                dirs[i] = joinpath(d, '.')
+
+        for entry in files:
+            dest = normpath(joinpath(destdir, root, entry))
+            src = normpath(joinpath(srcdir, root, entry))
+            if not isfile(dest) or not filecmp(src, dest):
+                print 'copy %s %s' % (dest, src)
+                copy(src, dest)
+
+progpath = nfspath(sys.path[0])
+progname = basename(sys.argv[0])
+usage = """\
+Usage:
+    %(progname)s [-c] [-e] [-f] [-j <jobfile>] [-q queue] [-v] <regexp>
+    -c           clean directory if job can be run
+    -C           submit the checkpointing runs
+    -d           Make jobs be dependent on the completion of the checkpoint runs
+    -e           only echo pbs command info, don't actually send the job
+    -f           force the job to run regardless of state
+    -q <queue>   submit job to the named queue
+    -j <jobfile> specify the jobfile (default is <rootdir>/Test.py)
+    -v           be verbose
+
+    %(progname)s [-j <jobfile>] -l [-v] <regexp>
+    -j <jobfile> specify the jobfile (default is <rootdir>/Test.py)
+    -l           list job names, don't submit
+    -v           be verbose (list job parameters)
+
+    %(progname)s -h
+    -h           display this help
+""" % locals()
+
+try:
+    import getopt
+    opts, args = getopt.getopt(sys.argv[1:], '-Ccdefhj:lnq:Rt:v')
+except getopt.GetoptError:
+    sys.exit(usage)
+
+depend = False
+clean = False
+onlyecho = False
+exprs = []
+force = False
+listonly = False
+queue = ''
+verbose = False
+jfile = 'Test.py'
+docpts = False
+doruns = True
+runflag = False
+node_type = 'FAST'
+update = True
+
+for opt,arg in opts:
+    if opt == '-C':
+        docpts = True
+    if opt == '-c':
+        clean = True
+    if opt == '-d':
+        depend = True
+    if opt == '-e':
+        onlyecho = True
+    if opt == '-f':
+        force = True
+    if opt == '-h':
+        print usage
+        sys.exit(0)
+    if opt == '-j':
+        jfile = arg
+    if opt == '-l':
+        listonly = True
+    if opt == '-n':
+        update = False
+    if opt == '-q':
+        queue = arg
+    if opt == '-R':
+        runflag = True
+    if opt == '-t':
+        node_type = arg
+    if opt == '-v':
+        verbose = True
+
+if docpts:
+    doruns = runflag
+
+for arg in args:
+    exprs.append(re.compile(arg))
+
+import jobfile, batch
+from job import JobDir, date
+
+conf = jobfile.JobFile(jfile)
+
+if update and not listonly and not onlyecho and isdir(conf.linkdir):
+    if verbose:
+        print 'Checking for outdated files in Link directory'
+    if not isdir(conf.basedir):
+        os.mkdir(conf.basedir)
+    syncdir(conf.linkdir, conf.basedir)
+
+jobnames = {}
+joblist = []
+
+if docpts and doruns:
+    gen = conf.alljobs()
+elif docpts:
+    gen = conf.checkpoints()
+elif doruns:
+    gen = conf.jobs()
+
+for job in gen:
+    if job.name in jobnames:
+        continue
+
+    if exprs:
+        for expr in exprs:
+            if expr.match(job.name):
+                joblist.append(job)
+                break
+    else:
+        joblist.append(job)
+
+if listonly:
+    if verbose:
+        for job in joblist:
+            job.printinfo()
+    else:
+        for job in joblist:
+            print job.name
+    sys.exit(0)
+
+if not onlyecho:
+    newlist = []
+    for job in joblist:
+        jobdir = JobDir(joinpath(conf.rootdir, job.name))
+        if jobdir.exists():
+            if not force:
+                status = jobdir.getstatus()
+                if status == 'queued':
+                    continue
+
+                if status == 'running':
+                    continue
+
+                if status == 'success':
+                    continue
+
+            if not clean:
+                sys.exit('job directory %s not clean!' % jobdir)
+
+            jobdir.clean()
+        newlist.append(job)
+    joblist = newlist
+
+class NameHack(object):
+    def __init__(self, host='pbs.pool', port=24465):
+        self.host = host
+        self.port = port
+        self.socket = None
+
+    def setname(self, jobid, jobname):
+        try:
+            jobid = int(jobid)
+        except ValueError:
+            jobid = int(jobid.strip().split('.')[0])
+
+        jobname = jobname.strip()
+        # since pbs can handle jobnames of 15 characters or less,
+        # don't use the raj hack.
+        if len(jobname) <= 15:
+            return
+
+        if self.socket is None:
+            import socket
+            self.socket = socket.socket()
+            # Connect to pbs.pool and send the jobid/jobname pair to port
+            # 24465 (Raj didn't realize that there are only 64k ports and
+            # setup inetd to point to port 90001)
+            self.socket.connect((self.host, self.port))
+
+        self.socket.send("%s %s\n" % (jobid, jobname))
+
+namehack = NameHack()
+
+rootdir = conf.rootdir
+script = joinpath(rootdir, 'Base', 'job.py')
+
+for job in joblist:
+    jobdir = JobDir(joinpath(rootdir, job.name))
+    if depend:
+        cptdir = JobDir(joinpath(rootdir, job.checkpoint.name))
+        path = str(cptdir)
+        if not isdir(path) or not isfile(joinpath(path, '.success')):
+            continue
+
+        cptjob = cptdir.readval('.batch_jobid')
+
+    if not onlyecho:
+        jobdir.create()
+        os.chdir(str(jobdir))
+        os.environ['PWD'] = str(jobdir)
+
+    print 'Job name:       %s' % job.name
+    print 'Job directory:  %s' % jobdir
+
+
+    qsub = batch.oarsub()
+    qsub.oarhost = 'poolfs.eecs.umich.edu'
+    #qsub.stdout = jobdir.file('jobout')
+    qsub.name = job.name
+    qsub.walltime = '50'
+    #qsub.join = True
+    #qsub.node_type = node_type
+    #qsub.env['ROOTDIR'] = conf.rootdir
+    #qsub.env['JOBNAME'] = job.name
+    #if depend:
+    #    qsub.afterok = cptjob
+    #if queue:
+    #    qsub.queue = queue
+    qsub.properties = "64bit = 'Yes' or 64bit = 'No'"
+    qsub.build(script)
+
+    if verbose:
+        print 'cwd:    %s' % qsub.command
+        print 'PBS Command:    %s' % qsub.command
+
+    if not onlyecho:
+        ec = qsub.do()
+        if ec == 0:
+            jobid = qsub.result
+            print 'OAR Jobid:      %s' % jobid
+            #namehack.setname(jobid, job.name)
+            queued = date()
+            jobdir.echofile('.batch_jobid', jobid)
+            jobdir.echofile('.batch_jobname', job.name)
+            jobdir.echofile('.queued', queued)
+            jobdir.setstatus('queued on %s' % queued)
+        else:
+            print 'OAR Failed'
+    print
+    print
--- a/util/m5/m5.c
+++ b/util/m5/m5.c
@ -169,6 +169,22 @@ main(int argc, char *argv[])
        }
    }

+    if (COMPARE("readfile")) {
+            char buf[256*1024];
+            int offset = 0;
+            int len;
+
+            if (argc != 2)
+                    usage();
+
+            while ((len = m5_readfile(buf, sizeof(buf), offset)) > 0) {
+                    write(STDOUT_FILENO, buf, len);
+                    offset += len;
+            }
+
+            return 0;
+    }
+
    if (COMPARE("checkpoint")) {
        switch (argc) {
          case 4:
@ -186,6 +202,9 @@ main(int argc, char *argv[])
        return 0;
    }

+    if (COMPARE("loadsymbol")) {
+        m5_loadsymbol(arg1);
+        return 0;
    if (COMPARE("readfile")) {
            char buf[256*1024];
            int offset = 0;
--- a/util/m5/m5op.S
+++ b/util/m5/m5op.S
@ -41,6 +41,7 @@
 #define exit_old_func 0x20 // deprectated!
 #define exit_func 0x21
 #define initparam_func 0x30
+#define loadsymbol_func 0x31
 #define resetstats_func 0x40
 #define dumpstats_func 0x41
 #define dumprststats_func 0x42
@ -77,6 +78,7 @@ func:
 #define IVLE(reg) INST(m5_op, reg, 0, ivle_func)
 #define M5EXIT(reg) INST(m5_op, reg, 0, exit_func)
 #define INITPARAM(reg) INST(m5_op, reg, 0, initparam_func)
+#define LOADSYMBOL(reg) INST(m5_op, reg, 0, loadsymbol_func)
 #define RESET_STATS(r1, r2) INST(m5_op, r1, r2, resetstats_func)
 #define DUMP_STATS(r1, r2) INST(m5_op, r1, r2, dumpstats_func)
 #define DUMPRST_STATS(r1, r2) INST(m5_op, r1, r2, dumprststats_func)
@ -146,6 +148,12 @@ LEAF(m5_initparam)
        RET
 END(m5_initparam)

+        .align 4
+LEAF(m5_loadsymbol)
+        LOADSYMBOL(0)
+        RET
+END(m5_loadsymbol)
+
        .align 4
 LEAF(m5_reset_stats)
        RESET_STATS(16, 17)