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Code Issues Releases Wiki Activity

Added handling for 'END'

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This commit is contained in:
Ross Wilson 2016-01-24 11:54:20 +07:00
parent 2a2760d962
commit 1cdaacdbb5
1 changed files with 22 additions and 14 deletions
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36
pyasm/pyasm
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@ -101,7 +101,7 @@ def str2int(s):
return value
def list(code, addr, lnum, line):
def write_list(code, addr, lnum, line):
"""Generate one line of listing file.
code is the word of generated code
@ -150,9 +150,28 @@ def assemble_oblock(oblock):
# if no code, just list it
if label is None and opcode is None:
list(None, None, lnum, line)
write_list(None, None, lnum, line)
else:
# we have some code to generate
# maybe we have some code to generate
if opcode:
opcode = opcode.upper()
if opcode == 'ORG':
# ORG just sets the code address and starts the code block
address = str2int(addr)
print('ORG set address to %06o' % address)
code = None
cblock = [address, []]
write_list(None, None, lnum, line)
elif opcode == 'END':
# END pseudo-op, terminate assembly
write_list(None, str2int(addr), lnum, line)
return cblock
else:
code = assemble_line(lnum, opcode, addr)
print('cblock=%s' % str(cblock))
cblock[1].append(code)
write_list(code, address, lnum, line)
address += 1
if label:
# we have a label, so a new symbol
label_upper = label.upper()
@ -162,17 +181,6 @@ def assemble_oblock(oblock):
error("Label '%s' define twice, lines %d and %d."
% (label, prev_lnum, lnum))
SymTable[label_upper] = [address, lnum]
if opcode:
opcode_upper = opcode.upper()
if opcode == 'ORG':
address = str2int(addr)
code = None
cblock = [address, []]
else:
code = assemble_line(lnum, opcode, addr)
print('cblock=%s' % str(cblock))
cblock[1].append(code)
list(code, address, lnum, line)
def assemble_org_blocks(blocks):
"""Assemble org blocks producing a code blocks list."""