'''
class ISAParser(Grammar):
- def __init__(self, *args, **kwargs):
- super(ISAParser, self).__init__(*args, **kwargs)
+ def __init__(self, output_dir):
+ super(ISAParser, self).__init__()
+ self.output_dir = output_dir
+
self.templateMap = {}
#####################################################################
# END OF GRAMMAR RULES
-# Now build the parser.
-parser = ISAParser()
-
-# Update the output file only if the new contents are different from
-# the current contents. Minimizes the files that need to be rebuilt
-# after minor changes.
-def update_if_needed(file, contents):
- update = False
- if os.access(file, os.R_OK):
- f = open(file, 'r')
- old_contents = f.read()
- f.close()
- if contents != old_contents:
- print 'Updating', file
- os.remove(file) # in case it's write-protected
- update = True
+ def update_if_needed(self, file, contents):
+ '''Update the output file only if the new contents are
+ different from the current contents. Minimizes the files that
+ need to be rebuilt after minor changes.'''
+
+ file = os.path.join(self.output_dir, file)
+ update = False
+ if os.access(file, os.R_OK):
+ f = open(file, 'r')
+ old_contents = f.read()
+ f.close()
+ if contents != old_contents:
+ print 'Updating', file
+ os.remove(file) # in case it's write-protected
+ update = True
+ else:
+ print 'File', file, 'is unchanged'
else:
- print 'File', file, 'is unchanged'
- else:
- print 'Generating', file
- update = True
- if update:
- f = open(file, 'w')
- f.write(contents)
- f.close()
-
-# This regular expression matches '##include' directives
-includeRE = re.compile(r'^\s*##include\s+"(?P<filename>[\w/.-]*)".*$',
- re.MULTILINE)
-
-# Function to replace a matched '##include' directive with the
-# contents of the specified file (with nested ##includes replaced
-# recursively). 'matchobj' is an re match object (from a match of
-# includeRE) and 'dirname' is the directory relative to which the file
-# path should be resolved.
-def replace_include(matchobj, dirname):
- fname = matchobj.group('filename')
- full_fname = os.path.normpath(os.path.join(dirname, fname))
- contents = '##newfile "%s"\n%s\n##endfile\n' % \
- (full_fname, read_and_flatten(full_fname))
- return contents
-
-# Read a file and recursively flatten nested '##include' files.
-def read_and_flatten(filename):
- current_dir = os.path.dirname(filename)
- try:
- contents = open(filename).read()
- except IOError:
- error(0, 'Error including file "%s"' % filename)
- fileNameStack.push((filename, 0))
- # Find any includes and include them
- contents = includeRE.sub(lambda m: replace_include(m, current_dir),
- contents)
- fileNameStack.pop()
- return contents
+ print 'Generating', file
+ update = True
+ if update:
+ f = open(file, 'w')
+ f.write(contents)
+ f.close()
+
+ # This regular expression matches '##include' directives
+ includeRE = re.compile(r'^\s*##include\s+"(?P<filename>[\w/.-]*)".*$',
+ re.MULTILINE)
+
+ def replace_include(self, matchobj, dirname):
+ """Function to replace a matched '##include' directive with the
+ contents of the specified file (with nested ##includes
+ replaced recursively). 'matchobj' is an re match object
+ (from a match of includeRE) and 'dirname' is the directory
+ relative to which the file path should be resolved."""
+
+ fname = matchobj.group('filename')
+ full_fname = os.path.normpath(os.path.join(dirname, fname))
+ contents = '##newfile "%s"\n%s\n##endfile\n' % \
+ (full_fname, self.read_and_flatten(full_fname))
+ return contents
+
+ def read_and_flatten(self, filename):
+ """Read a file and recursively flatten nested '##include' files."""
+
+ current_dir = os.path.dirname(filename)
+ try:
+ contents = open(filename).read()
+ except IOError:
+ error(0, 'Error including file "%s"' % filename)
-#
-# Read in and parse the ISA description.
-#
-def parse_isa_desc(isa_desc_file, output_dir):
- # Read file and (recursively) all included files into a string.
- # PLY requires that the input be in a single string so we have to
- # do this up front.
- isa_desc = read_and_flatten(isa_desc_file)
-
- # Initialize filename stack with outer file.
- fileNameStack.push((isa_desc_file, 0))
-
- # Parse it.
- (isa_name, namespace, global_code, namespace_code) = parser.parse(isa_desc)
-
- # grab the last three path components of isa_desc_file to put in
- # the output
- filename = '/'.join(isa_desc_file.split('/')[-3:])
-
- # generate decoder.hh
- includes = '#include "base/bitfield.hh" // for bitfield support'
- global_output = global_code.header_output
- namespace_output = namespace_code.header_output
- decode_function = ''
- update_if_needed(output_dir + '/decoder.hh', file_template % vars())
-
- # generate decoder.cc
- includes = '#include "decoder.hh"'
- global_output = global_code.decoder_output
- namespace_output = namespace_code.decoder_output
- # namespace_output += namespace_code.decode_block
- decode_function = namespace_code.decode_block
- update_if_needed(output_dir + '/decoder.cc', file_template % vars())
-
- # generate per-cpu exec files
- for cpu in cpu_models:
- includes = '#include "decoder.hh"\n'
- includes += cpu.includes
- global_output = global_code.exec_output[cpu.name]
- namespace_output = namespace_code.exec_output[cpu.name]
+ fileNameStack.push((filename, 0))
+
+ # Find any includes and include them
+ def replace(matchobj):
+ return self.replace_include(matchobj, current_dir)
+ contents = self.includeRE.sub(replace, contents)
+
+ fileNameStack.pop()
+ return contents
+
+ def parse_isa_desc(self, isa_desc_file):
+ '''Read in and parse the ISA description.'''
+
+ # Read file and (recursively) all included files into a string.
+ # PLY requires that the input be in a single string so we have to
+ # do this up front.
+ isa_desc = self.read_and_flatten(isa_desc_file)
+
+ # Initialize filename stack with outer file.
+ fileNameStack.push((isa_desc_file, 0))
+
+ # Parse it.
+ (isa_name, namespace, global_code, namespace_code) = \
+ self.parse(isa_desc)
+
+ # grab the last three path components of isa_desc_file to put in
+ # the output
+ filename = '/'.join(isa_desc_file.split('/')[-3:])
+
+ # generate decoder.hh
+ includes = '#include "base/bitfield.hh" // for bitfield support'
+ global_output = global_code.header_output
+ namespace_output = namespace_code.header_output
decode_function = ''
- update_if_needed(output_dir + '/' + cpu.filename,
- file_template % vars())
-
- # The variable names here are hacky, but this will creat local variables
- # which will be referenced in vars() which have the value of the globals.
- global maxInstSrcRegs
- MaxInstSrcRegs = maxInstSrcRegs
- global maxInstDestRegs
- MaxInstDestRegs = maxInstDestRegs
- # max_inst_regs.hh
- update_if_needed(output_dir + '/max_inst_regs.hh', \
- max_inst_regs_template % vars())
+ self.update_if_needed('decoder.hh', file_template % vars())
+
+ # generate decoder.cc
+ includes = '#include "decoder.hh"'
+ global_output = global_code.decoder_output
+ namespace_output = namespace_code.decoder_output
+ # namespace_output += namespace_code.decode_block
+ decode_function = namespace_code.decode_block
+ self.update_if_needed('decoder.cc', file_template % vars())
+
+ # generate per-cpu exec files
+ for cpu in cpu_models:
+ includes = '#include "decoder.hh"\n'
+ includes += cpu.includes
+ global_output = global_code.exec_output[cpu.name]
+ namespace_output = namespace_code.exec_output[cpu.name]
+ decode_function = ''
+ self.update_if_needed(cpu.filename, file_template % vars())
+
+ # The variable names here are hacky, but this will creat local
+ # variables which will be referenced in vars() which have the
+ # value of the globals.
+ global maxInstSrcRegs
+ MaxInstSrcRegs = maxInstSrcRegs
+ global maxInstDestRegs
+ MaxInstDestRegs = maxInstDestRegs
+ # max_inst_regs.hh
+ self.update_if_needed('max_inst_regs.hh',
+ max_inst_regs_template % vars())
# global list of CpuModel objects (see cpu_models.py)
cpu_models = []
if __name__ == '__main__':
execfile(sys.argv[1]) # read in CpuModel definitions
cpu_models = [CpuModel.dict[cpu] for cpu in sys.argv[4:]]
- parse_isa_desc(sys.argv[2], sys.argv[3])
+ parser = ISAParser(sys.argv[3])
+ parser.parse_isa_desc(sys.argv[2])
projects / gem5.git / commitdiff