# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#
-# Authors: Gabe Black
+
+from __future__ import print_function
import os
import sys
import re
-import string
import traceback
# get type names
from types import *
-# Prepend the directory where the PLY lex & yacc modules are found
-# to the search path.
-sys.path[0:0] = [os.environ['M5_PLY']]
-
from ply import lex
from ply import yacc
self.micro_classes = {}
self.labels = {}
- def add_microop(self, microop):
+ def add_microop(self, mnemonic, microop):
self.microops.append(microop)
def __str__(self):
##########################################################################
def print_error(message):
- print
- print "*** %s" % message
- print
+ print()
+ print("*** %s" % message)
+ print()
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.")
+ print_error("Error creating microop object with mnemonic %s." % \
+ statement.mnemonic)
raise
try:
for label in statement.labels:
- container.labels[label.name] = microop
- if label.extern:
- container.externs[label.name] = microop
- container.add_microop(microop)
+ container.labels[label.text] = microop
+ if label.is_extern:
+ container.externs[label.text] = microop
+ container.add_microop(statement.mnemonic, microop)
except:
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
+ print(container.directives)
raise
else:
raise Exception, "Didn't recognize the type of statement", statement
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
def t_asm_ID(t):
r'[A-Za-z_]\w*'
t.type = reserved_map.get(t.value, 'ID')
- t.lexer.begin('params')
+ # If the ID is really "extern", we shouldn't start looking for parameters
+ # yet. The real ID, the label itself, is coming up.
+ if t.type != 'EXTERN':
+ 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)
- print "About to sub %s for %s" % (val[1], val)
- return val[1]
- print "Looking for matches in %s" % t.value
- 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'\{'
t[1].append(t[2])
t[0] = t[1]
+# labels on lines by themselves are attached to the following instruction.
+def p_labels_2(t):
+ 'labels : labels NEWLINE'
+ t[0] = t[1]
+
def p_label_0(t):
'label : ID COLON'
label = Label()
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
projects / gem5.git / blobdiff