diff options
Diffstat (limited to 'src')
| -rwxr-xr-x | src/arch/isa_parser.py | 120 |
1 files changed, 71 insertions, 49 deletions
diff --git a/src/arch/isa_parser.py b/src/arch/isa_parser.py index 785a92e67..a8f9852ea 100755 --- a/src/arch/isa_parser.py +++ b/src/arch/isa_parser.py @@ -30,7 +30,7 @@ import os import sys import re import string -import traceback +import inspect, traceback # get type names from types import * @@ -71,23 +71,46 @@ def fixPythonIndentation(s): s = 'if 1:\n' + s return s -# Error handler. Just call exit. Output formatted to work under -# Emacs compile-mode. Optional 'print_traceback' arg, if set to True, -# prints a Python stack backtrace too (can be handy when trying to -# debug the parser itself). -def error(lineno, string, print_traceback = False): - spaces = "" - for (filename, line) in fileNameStack[0:-1]: - print spaces + "In file included from " + filename + ":" - spaces += " " - # Print a Python stack backtrace if requested. - if (print_traceback): - traceback.print_exc() - if lineno != 0: - line_str = "%d:" % lineno - else: - line_str = "" - sys.exit(spaces + "%s:%s %s" % (fileNameStack[-1][0], line_str, string)) +class ISAParserError(Exception): + """Error handler for parser errors""" + def __init__(self, first, second=None): + if second is None: + self.lineno = 0 + self.string = first + else: + if hasattr(first, 'lexer'): + first = first.lexer.lineno + self.lineno = first + self.string = second + + def display(self, filename_stack, print_traceback=False): + # Output formatted to work under Emacs compile-mode. Optional + # 'print_traceback' arg, if set to True, prints a Python stack + # backtrace too (can be handy when trying to debug the parser + # itself). + + spaces = "" + for (filename, line) in filename_stack[:-1]: + print "%sIn file included from %s:" % (spaces, filename) + spaces += " " + + # Print a Python stack backtrace if requested. + if print_traceback or not self.lineno: + traceback.print_exc() + + line_str = "%s:" % (filename_stack[-1][0], ) + if self.lineno: + line_str += "%d:" % (self.lineno, ) + + return "%s%s %s" % (spaces, line_str, self.string) + + def exit(self, filename_stack, print_traceback=False): + # Just call exit. + + sys.exit(self.display(filename_stack, print_traceback)) + +def error(*args): + raise ISAParserError(*args) #################### # Template objects. @@ -578,7 +601,7 @@ class IntRegOperand(Operand): def makeRead(self): if (self.ctype == 'float' or self.ctype == 'double'): - error(0, 'Attempt to read integer register as FP') + error('Attempt to read integer register as FP') if self.read_code != None: return self.buildReadCode('readIntRegOperand') if (self.size == self.dflt_size): @@ -596,7 +619,7 @@ class IntRegOperand(Operand): def makeWrite(self): if (self.ctype == 'float' or self.ctype == 'double'): - error(0, 'Attempt to write integer register as FP') + error('Attempt to write integer register as FP') if self.write_code != None: return self.buildWriteCode('setIntRegOperand') if (self.size != self.dflt_size and self.is_signed): @@ -687,7 +710,7 @@ class ControlRegOperand(Operand): def makeRead(self): bit_select = 0 if (self.ctype == 'float' or self.ctype == 'double'): - error(0, 'Attempt to read control register as FP') + error('Attempt to read control register as FP') if self.read_code != None: return self.buildReadCode('readMiscRegOperand') base = 'xc->readMiscRegOperand(this, %s)' % self.src_reg_idx @@ -699,7 +722,7 @@ class ControlRegOperand(Operand): def makeWrite(self): if (self.ctype == 'float' or self.ctype == 'double'): - error(0, 'Attempt to write control register as FP') + error('Attempt to write control register as FP') if self.write_code != None: return self.buildWriteCode('setMiscRegOperand') wb = 'xc->setMiscRegOperand(this, %s, %s);\n' % \ @@ -917,7 +940,7 @@ class OperandList(object): op_desc = self.find_base(op_base) if op_desc: if op_desc.ext != op_ext: - error(0, 'Inconsistent extensions for operand %s' % \ + error('Inconsistent extensions for operand %s' % \ op_base) op_desc.is_src = op_desc.is_src or is_src op_desc.is_dest = op_desc.is_dest or is_dest @@ -950,7 +973,7 @@ class OperandList(object): self.numIntDestRegs += 1 elif op_desc.isMem(): if self.memOperand: - error(0, "Code block has more than one memory operand.") + error("Code block has more than one memory operand.") self.memOperand = op_desc global maxInstSrcRegs global maxInstDestRegs @@ -1029,9 +1052,8 @@ class SubOperandList(OperandList): # find this op in the master list op_desc = master_list.find_base(op_base) if not op_desc: - error(0, 'Found operand %s which is not in the master list!' \ - ' This is an internal error' % \ - op_base) + error('Found operand %s which is not in the master list!' \ + ' This is an internal error' % op_base) else: # See if we've already found this operand op_desc = self.find_base(op_base) @@ -1046,7 +1068,7 @@ class SubOperandList(OperandList): for op_desc in self.items: if op_desc.isMem(): if self.memOperand: - error(0, "Code block has more than one memory operand.") + error("Code block has more than one memory operand.") self.memOperand = op_desc # Regular expression object to match C++ comments @@ -1137,7 +1159,7 @@ class InstObjParams(object): elif opClassRE.match(oa): self.op_class = oa else: - error(0, 'InstObjParams: optional arg "%s" not recognized ' + error('InstObjParams: optional arg "%s" not recognized ' 'as StaticInst::Flag or OpClass.' % oa) # add flag initialization to contructor here to include @@ -1319,7 +1341,7 @@ class ISAParser(Grammar): try: t.value = int(t.value,0) except ValueError: - error(t.lexer.lineno, 'Integer value "%s" too large' % t.value) + error(t, 'Integer value "%s" too large' % t.value) t.value = 0 return t @@ -1375,7 +1397,7 @@ class ISAParser(Grammar): # Error handler def t_error(self, t): - error(t.lexer.lineno, "illegal character '%s'" % t.value[0]) + error(t, "illegal character '%s'" % t.value[0]) t.skip(1) ##################################################################### @@ -1496,8 +1518,7 @@ StaticInstPtr try: exec fixPythonIndentation(t[2]) in exportContext except Exception, exc: - error(t.lexer.lineno, - 'error: %s in global let block "%s".' % (exc, t[2])) + error(t, 'error: %s in global let block "%s".' % (exc, t[2])) t[0] = GenCode(header_output = exportContext["header_output"], decoder_output = exportContext["decoder_output"], exec_output = exportContext["exec_output"], @@ -1510,7 +1531,7 @@ StaticInstPtr try: user_dict = eval('{' + t[3] + '}') except Exception, exc: - error(t.lexer.lineno, + error(t, 'error: %s in def operand_types block "%s".' % (exc, t[3])) buildOperandTypeMap(user_dict, t.lexer.lineno) t[0] = GenCode() # contributes nothing to the output C++ file @@ -1520,13 +1541,11 @@ StaticInstPtr def p_def_operands(self, t): 'def_operands : DEF OPERANDS CODELIT SEMI' if not globals().has_key('operandTypeMap'): - error(t.lexer.lineno, - 'error: operand types must be defined before operands') + error(t, 'error: operand types must be defined before operands') try: user_dict = eval('{' + t[3] + '}', exportContext) except Exception, exc: - error(t.lexer.lineno, - 'error: %s in def operands block "%s".' % (exc, t[3])) + error(t, 'error: %s in def operands block "%s".' % (exc, t[3])) buildOperandNameMap(user_dict, t.lexer.lineno) t[0] = GenCode() # contributes nothing to the output C++ file @@ -1554,8 +1573,7 @@ StaticInstPtr def p_def_bitfield_struct(self, t): 'def_bitfield_struct : DEF opt_signed BITFIELD ID id_with_dot SEMI' if (t[2] != ''): - error(t.lexer.lineno, - 'error: structure bitfields are always unsigned.') + error(t, 'error: structure bitfields are always unsigned.') expr = 'machInst.%s' % t[5] hash_define = '#undef %s\n#define %s\t%s\n' % (t[4], t[4], expr) t[0] = GenCode(header_output = hash_define) @@ -1697,7 +1715,7 @@ StaticInstPtr def p_decode_stmt_list_1(self, t): 'decode_stmt_list : decode_stmt decode_stmt_list' if (t[1].has_decode_default and t[2].has_decode_default): - error(t.lexer.lineno, 'Two default cases in decode block') + error(t, 'Two default cases in decode block') t[0] = t[1] + t[2] # @@ -1744,8 +1762,7 @@ StaticInstPtr formatStack.push(formatMap[t[1]]) t[0] = ('', '// format %s' % t[1]) except KeyError: - error(t.lexer.lineno, - 'instruction format "%s" not defined.' % t[1]) + error(t, 'instruction format "%s" not defined.' % t[1]) # Nested decode block: if the value of the current field matches # the specified constant, do a nested decode on some other field. @@ -1818,8 +1835,7 @@ StaticInstPtr try: format = formatMap[t[1]] except KeyError: - error(t.lexer.lineno, - 'instruction format "%s" not defined.' % t[1]) + error(t, 'instruction format "%s" not defined.' % t[1]) codeObj = format.defineInst(t[3], t[5], t.lexer.lineno) comment = '\n// %s::%s(%s)\n' % (t[1], t[3], t[5]) codeObj.prepend_all(comment) @@ -1911,9 +1927,9 @@ StaticInstPtr # t.value) def p_error(self, t): if t: - error(t.lexer.lineno, "syntax error at '%s'" % t.value) + error(t, "syntax error at '%s'" % t.value) else: - error(0, "unknown syntax error", True) + error("unknown syntax error") # END OF GRAMMAR RULES @@ -1966,7 +1982,7 @@ StaticInstPtr try: contents = open(filename).read() except IOError: - error(0, 'Error including file "%s"' % filename) + error('Error including file "%s"' % filename) fileNameStack.push((filename, 0)) @@ -1978,7 +1994,7 @@ StaticInstPtr fileNameStack.pop() return contents - def parse_isa_desc(self, isa_desc_file): + 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. @@ -2032,6 +2048,12 @@ StaticInstPtr self.update_if_needed('max_inst_regs.hh', max_inst_regs_template % vars()) + def parse_isa_desc(self, *args, **kwargs): + try: + self._parse_isa_desc(*args, **kwargs) + except ISAParserError, e: + e.exit(fileNameStack) + # global list of CpuModel objects (see cpu_models.py) cpu_models = [] |