src/arch/isa_parser.py

68 # (e.g. from a format 'let' block) into something whose indentation
109 # Template objects are format strings that allow substitution from
226 # A format object encapsulates an instruction format.  It must provide
234         label = 'def format ' + id
265 # Special null format to catch an implicit-format instruction
266 # definition outside of any format block.
273               'instruction definition "%s" with no active format!' % name)
1564         # This dictionary maps format name strings to Format objects.
1577         # The format stack.
2002     # format operation will reduce them back to single '%'s.
2133     # An instruction format definition looks like
2134     # "def format <fmt>(<params>) {{...}};"
2140     # The formal parameter list for an instruction format is a
2202     # End of format definition-related rules.
2267     # 1. Format blocks 'format <foo> { ... }'
2284     # A format block 'format <foo> { ... }' sets the default
2285     # instruction format used to handle instruction definitions inside
2286     # the block.  This format can be overridden by using an explicit
2287     # format on the instruction definition or with a nested format
2291         # The format will be pushed on the stack when 'push_format_id'
2294         # with the format, so now we can pop it.
2298     # This rule exists so we can set the current format (& push the
2299     # stack) when we recognize the format name part of the format
2305             t[0] = ('', '// format %s' % t[1])
2307             error(t.lineno(1), 'instruction format "%s" not defined.' % t[1])
2366     # Define an instruction using the current instruction format
2367     # (specified by an enclosing format block).
2371         # Pass the ID and arg list to the current format class to deal with.
2381     # Define an instruction using an explicitly specified format:
2386             format = self.formatMap[t[1]]
2388             error(t.lineno(1), 'instruction format "%s" not defined.' % t[1])
2390         codeObj = format.defineInst(self, t[3], t[5], t.lexer.lineno)
2438     # block) and default values for formal parameters of format
2496         '''Define a new format'''
2500             error(lineno, 'format %s redefined.' % id)
2506         '''Protect any non-dict-substitution '%'s in a format string