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isa_parser: Make SCons import the isa_parser

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this is instead of forking a new interpreter
This commit is contained in:
Nathan Binkert 2010-02-26 18:14:48 -08:00
parent 629e8df196
commit ac106767c8
1 changed files with 27 additions and 22 deletions
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49
src/arch/SConscript
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@ -90,41 +90,46 @@ env.Append(SCANNERS = isa_scanner)
# output from the ISA description (*.isa) files. # output from the ISA description (*.isa) files.
# #
#
# Grab the CPU Model information
#
# Convert to File node to fix path # Convert to File node to fix path
isa_parser = File('isa_parser.py')
cpu_models_file = File('../cpu/cpu_models.py') cpu_models_file = File('../cpu/cpu_models.py')
# This sucks in the defintions of the CpuModel objects. # This sucks in the defintions of the CpuModel objects.
execfile(cpu_models_file.srcnode().abspath) execfile(cpu_models_file.srcnode().abspath)
# Several files are generated from the ISA description.
# We always get the basic decoder and header file.
isa_desc_gen_files = [ 'decoder.cc', 'decoder.hh', 'max_inst_regs.hh' ]
# We also get an execute file for each selected CPU model.
isa_desc_gen_files += [CpuModel.dict[cpu].filename
for cpu in env['CPU_MODELS']]
# Also include the CheckerCPU as one of the models if it is being
# enabled via command line.
if env['USE_CHECKER']:
isa_desc_gen_files += [CpuModel.dict['CheckerCPU'].filename]
# The emitter patches up the sources & targets to include the # The emitter patches up the sources & targets to include the
# autogenerated files as targets and isa parser itself as a source. # autogenerated files as targets and isa parser itself as a source.
def isa_desc_emitter(target, source, env): def isa_desc_emitter(target, source, env):
return (isa_desc_gen_files, [isa_parser, cpu_models_file] + source) cpu_models = list(env['CPU_MODELS'])
if env['USE_CHECKER']:
cpu_models.append('CheckerCPU')
# Pieces are in place, so create the builder. # Several files are generated from the ISA description.
python = sys.executable # use same Python binary used to run scons # We always get the basic decoder and header file.
target = [ 'decoder.cc', 'decoder.hh', 'max_inst_regs.hh' ]
# We also get an execute file for each selected CPU model.
target += [CpuModel.dict[cpu].filename for cpu in cpu_models]
return target, source + [ Value(m) for m in cpu_models ]
ARCH_DIR = Dir('.')
def isa_desc_action(target, source, env):
# Add the current directory to the system path so we can import files
sys.path[0:0] = [ ARCH_DIR.srcnode().abspath ]
import isa_parser
models = [ s.get_contents() for s in source[1:] ]
cpu_models = [CpuModel.dict[cpu] for cpu in models]
parser = isa_parser.ISAParser(target[0].dir.abspath, cpu_models)
parser.parse_isa_desc(source[0].abspath)
# Also include the CheckerCPU as one of the models if it is being # Also include the CheckerCPU as one of the models if it is being
# enabled via command line. # enabled via command line.
if env['USE_CHECKER']: isa_desc_builder = Builder(action=isa_desc_action, emitter=isa_desc_emitter)
isa_desc_builder = Builder(action=python + ' $SOURCES $TARGET.dir $CPU_MODELS CheckerCPU',
emitter = isa_desc_emitter)
else:
isa_desc_builder = Builder(action=python + ' $SOURCES $TARGET.dir $CPU_MODELS',
emitter = isa_desc_emitter)
env.Append(BUILDERS = { 'ISADesc' : isa_desc_builder }) env.Append(BUILDERS = { 'ISADesc' : isa_desc_builder })