Move main control from C++ into Python.

User script now invokes initialization and
simulation loop after building configuration.
These functions are exported from C++ to Python
using SWIG.

SConstruct:
    Set up SWIG builder & scanner.
    Set up symlinking of source files into build directory
    (by not disabling the default behavior).
configs/test/test.py:
    Rewrite to use new script-driven interface.
    Include a sample option.
src/SConscript:
    Set up symlinking of source files into build directory
    (by not disabling the default behavior).
    Add SWIG-generated main_wrap.cc to source list.
src/arch/SConscript:
    Set up symlinking of source files into build directory
    (by not disabling the default behavior).
src/arch/alpha/ev5.cc:
src/arch/alpha/isa/decoder.isa:
src/cpu/o3/alpha_cpu_impl.hh:
src/cpu/trace/opt_cpu.cc:
src/cpu/trace/trace_cpu.cc:
src/sim/pseudo_inst.cc:
src/sim/root.cc:
src/sim/serialize.cc:
src/sim/syscall_emul.cc:
    SimExit() is now exitSimLoop().
src/cpu/base.cc:
    SimExitEvent is now SimLoopExitEvent
src/python/SConscript:
    Add SWIG build command for main.i.
    Use python/m5 in build dir as source for zip archive...
    easy now with file duplication enabled.
src/python/m5/__init__.py:
    - Move copyright notice back to C++ so we can print
    it right away, even for interactive sessions.
    - Get rid of argument parsing code; just provide default
    option descriptors for user script to call optparse with.
    - Don't clutter m5 namespace by sucking in all of m5.config
    and m5.objects.
    - Move instantiate() function here from config.py.
src/python/m5/config.py:
    - Move instantiate() function to __init__.py.
    - Param.Foo deferred type lookups must use m5.objects
    namespace now (not m5).
src/python/m5/objects/AlphaConsole.py:
src/python/m5/objects/AlphaFullCPU.py:
src/python/m5/objects/AlphaTLB.py:
src/python/m5/objects/BadDevice.py:
src/python/m5/objects/BaseCPU.py:
src/python/m5/objects/BaseCache.py:
src/python/m5/objects/Bridge.py:
src/python/m5/objects/Bus.py:
src/python/m5/objects/CoherenceProtocol.py:
src/python/m5/objects/Device.py:
src/python/m5/objects/DiskImage.py:
src/python/m5/objects/Ethernet.py:
src/python/m5/objects/Ide.py:
src/python/m5/objects/IntrControl.py:
src/python/m5/objects/MemObject.py:
src/python/m5/objects/MemTest.py:
src/python/m5/objects/Pci.py:
src/python/m5/objects/PhysicalMemory.py:
src/python/m5/objects/Platform.py:
src/python/m5/objects/Process.py:
src/python/m5/objects/Repl.py:
src/python/m5/objects/Root.py:
src/python/m5/objects/SimConsole.py:
src/python/m5/objects/SimpleDisk.py:
src/python/m5/objects/System.py:
src/python/m5/objects/Tsunami.py:
src/python/m5/objects/Uart.py:
    Fix up imports (m5 namespace no longer includes m5.config).
src/sim/eventq.cc:
src/sim/eventq.hh:
    Support for Python-called simulate() function:
    - Use IsExitEvent flag to signal events that want
    to exit the simulation loop gracefully (instead of
    calling exit() to terminate the process).
    - Modify interface to hand exit event object back to
    caller so it can be inspected for cause.
src/sim/host.hh:
    Add MaxTick constant.
src/sim/main.cc:
    Move copyright notice back to C++ so we can print
    it right away, even for interactive sessions.
    Use PYTHONPATH environment var to set module path
    (instead of clunky code injection method).
    Move main control from here into Python:
    - Separate initialization code and simulation loop
    into separate functions callable from Python.
    - Make Python interpreter invocation more pure (more
    like directly invoking interpreter).
    Add -i and -p flags (only options on binary itself;
    other options processed by Python).
    Import readline package when using interactive mode.
src/sim/sim_events.cc:
    SimExitEvent is now SimLoopExitEvent, and uses
    IsSimExit flag to terminate loop (instead of
    exiting simulator process).
src/sim/sim_events.hh:
    SimExitEvent is now SimLoopExitEvent, and uses
    IsSimExit flag to terminate loop (instead of
    exiting simulator process).
    Get rid of a few unused constructors.
src/sim/sim_exit.hh:
    SimExit() is now exitSimLoop().
    Get rid of unused functions.
    Add comments.

--HG--
extra : convert_revision : 280b0d671516b25545a6f24cefa64a68319ff3d4

1 files changed, 20 insertions, 1 deletions

diff --git a/SConstruct b/SConstruct
index 5e2e2711d..742bd932a 100644
--- a/SConstruct
+++ b/SConstruct
@@ -158,6 +158,12 @@ env = Environment(ENV = os.environ,  # inherit user's environment vars
 
 env.SConsignFile("sconsign")
 
+# Default duplicate option is to use hard links, but this messes up
+# when you use emacs to edit a file in the target dir, as emacs moves
+# file to file~ then copies to file, breaking the link.  Symbolic
+# (soft) links work better.
+env.SetOption('duplicate', 'soft-copy')
+
 # I waffle on this setting... it does avoid a few painful but
 # unnecessary builds, but it also seems to make trivial builds take
 # noticeably longer.
@@ -193,6 +199,19 @@ env.Append(LIBS = py_version_name)
 if sys.exec_prefix != '/usr':
     env.Append(LIBPATH = os.path.join(sys.exec_prefix, 'lib'))
 
+# Set up SWIG flags & scanner
+
+env.Append(SWIGFLAGS=Split('-c++ -python -modern $_CPPINCFLAGS'))
+
+import SCons.Scanner
+
+swig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")'
+
+swig_scanner = SCons.Scanner.ClassicCPP("SwigScan", ".i", "CPPPATH",
+                                        swig_inc_re)
+
+env.Append(SCANNERS = swig_scanner)
+
 # Other default libraries
 env.Append(LIBS=['z'])
 
@@ -468,7 +487,7 @@ for build_path in build_paths:
     # to the configured options.  It returns a list of environments,
     # one for each variant build (debug, opt, etc.)
     envList = SConscript('src/SConscript', build_dir = build_path,
-                         exports = 'env', duplicate = False)
+                         exports = 'env')
 
     # Set up the regression tests for each build.
 #    for e in envList: