diff options
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/micro_asm.py | 50 |
1 files changed, 28 insertions, 22 deletions
diff --git a/src/arch/micro_asm.py b/src/arch/micro_asm.py index 5aa910cc3..32dd79fdf 100644 --- a/src/arch/micro_asm.py +++ b/src/arch/micro_asm.py @@ -127,9 +127,13 @@ def print_error(message): def handle_statement(parser, container, statement): if statement.is_microop: + if statement.mnemonic not in parser.microops.keys(): + raise Exception, "Unrecognized mnemonic: %s" % statement.mnemonic + parser.symbols["__microopClassFromInsideTheAssembler"] = \ + parser.microops[statement.mnemonic] try: - microop = eval('parser.microops[statement.mnemonic](%s)' % - statement.params) + microop = eval('__microopClassFromInsideTheAssembler(%s)' % + statement.params, {}, parser.symbols) except: print_error("Error creating microop object with mnemonic %s." % \ statement.mnemonic) @@ -144,8 +148,13 @@ def handle_statement(parser, container, statement): print_error("Error adding microop.") raise elif statement.is_directive: + if statement.name not in container.directives.keys(): + raise Exception, "Unrecognized directive: %s" % statement.name + parser.symbols["__directiveFunctionFromInsideTheAssembler"] = \ + container.directives[statement.name] try: - eval('container.directives[statement.name](%s)' % statement.params) + eval('__directiveFunctionFromInsideTheAssembler(%s)' % + statement.params, {}, parser.symbols) except: print_error("Error executing directive.") print container.directives @@ -213,6 +222,19 @@ def t_params_COLON(t): t.lexer.begin('asm') return t +# Parameters are a string of text which don't contain an unescaped statement +# statement terminator, ie a newline or semi colon. +def t_params_PARAMS(t): + r'([^\n;\\]|(\\[\n;\\]))+' + t.lineno += t.value.count('\n') + unescapeParamsRE = re.compile(r'(\\[\n;\\])') + def unescapeParams(mo): + val = mo.group(0) + return val[1] + t.value = unescapeParamsRE.sub(unescapeParams, t.value) + t.lexer.begin('asm') + return t + # An "ID" in the micro assembler is either a label, directive, or mnemonic # If it's either a directive or a mnemonic, it will be optionally followed by # parameters. If it's a label, the following colon will make the lexer stop @@ -223,26 +245,13 @@ def t_asm_ID(t): t.lexer.begin('params') return t -# If there is a label and you're -not- in the assember (which would be caught +# If there is a label and you're -not- in the assembler (which would be caught # above), don't start looking for parameters. def t_ANY_ID(t): r'[A-Za-z_]\w*' t.type = reserved_map.get(t.value, 'ID') return t -# Parameters are a string of text which don't contain an unescaped statement -# statement terminator, ie a newline or semi colon. -def t_params_PARAMS(t): - r'([^\n;\\]|(\\[\n;\\]))+' - t.lineno += t.value.count('\n') - unescapeParamsRE = re.compile(r'(\\[\n;\\])') - def unescapeParams(mo): - val = mo.group(0) - return val[1] - t.value = unescapeParamsRE.sub(unescapeParams, t.value) - t.lexer.begin('asm') - return t - # Braces enter and exit micro assembly def t_INITIAL_LBRACE(t): r'\{' @@ -477,14 +486,11 @@ class MicroAssembler(object): self.parser.microops = microops self.parser.rom = rom self.parser.rom_macroop_type = rom_macroop_type + self.parser.symbols = {} + self.symbols = self.parser.symbols def assemble(self, asm): self.parser.parse(asm, lexer=self.lexer) - # Begin debug printing - #for macroop in self.parser.macroops.values(): - # print macroop - #print self.parser.rom - # End debug printing macroops = self.parser.macroops self.parser.macroops = {} return macroops |