Support loading in a symbol file.

arch/alpha/freebsd/system.cc:
arch/alpha/isa/decoder.isa:
arch/alpha/linux/system.cc:
arch/alpha/system.cc:
arch/alpha/tru64/system.cc:
    Let symbol files be read in so that profiling can happen on the binaries as well.
python/m5/objects/System.py:
    Add in symbol files.
sim/pseudo_inst.cc:
    Load in a specified symbol file.
sim/pseudo_inst.hh:
    Allow for symbols to be loaded.
sim/system.hh:
    Support symbol file.
util/m5/m5.c:
util/m5/m5op.S:
    Add support to m5 util for loading symbols (and readfile).

--HG--
extra : convert_revision : f10c1049bcd7b22b98c73052c0666b964aff222b

python/m5/objects/System.py

@@ -11,6 +11,7 @@ class System(SimObject):
     binned_fns = VectorParam.String([], "functions broken down and binned")
     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'