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# Copyright (c) 2011, Peter A. Bigot, licensed under New BSD (see COPYING)
# This file is part of msp430mcu (http://sourceforge.net/projects/mspgcc/)
#
# Read the chipflags.csv file and generate individual msp430_spec.spec
# files that will be referenced by the gcc spec file to determine
# device-specific default flags without requiring compiler
# modifications.
import sys
import csv
import os
msp430_root = os.environ.get('MSP430_ROOT', '/msp430')
msp430mcu_root = os.environ.get('MSP430MCU_ROOT', os.path.join(msp430_root, 'msp430mcu'))
analysis_dir = os.path.join(msp430mcu_root, 'analysis')
upstream_dir = os.path.join(msp430mcu_root, 'upstream')
def analysis_path (filename):
global analysis_dir
return os.path.join(analysis_dir, filename)
def upstream_path (filename):
global upstream_dir
return os.path.join(upstream_dir, filename)
reader = csv.reader(file(analysis_path('chipflags.csv')))
fields = reader.next()
cpu_spec = []
mpy_spec = []
ivcnt_spec = []
sections = { 'cpu': cpu_spec,
'mpy': mpy_spec,
'ivcnt': ivcnt_spec }
remap_from = { }
for line in file(analysis_path('../scripts/legacy.map')):
tokens = line[:line.find('#')].split()
if not tokens:
continue
key = tokens.pop(0)
if tokens:
value = tokens.pop(0)
else:
value = key.replace('430x', '430f').lower()
remap_from[key] = value
remap_to = { }
for (k, v) in remap_from.items():
while v in remap_from:
v = remap_from[v]
remap_to.setdefault(v, []).append(k)
for row in reader:
args = dict(zip(('mcu', 'xmcu', 'cpu', 'mpy', 'intr'), row))
mcu_selector = 'mmcu=%(mcu)s|mmcu=%(mcu)s_*' % args
aux_mcu = remap_to.get(args['mcu'])
if aux_mcu is not None:
mcu_selector += '|%s' % ('|'.join([ 'mmcu=%s' % (_xmcu,) for _xmcu in aux_mcu ]),)
args['mcusel'] = mcu_selector
# Define mcu-specific values for CPU, hardware multiplier, and
# interrupt vector length.
cpu_spec.append('%(mcusel)s:-mcpu=%(cpu)s' % args)
mpy_spec.append('%(mcusel)s:-mmpy=%(mpy)s' % args)
ivcnt_spec.append('%(mcusel)s:-mivcnt=%(intr)s' % args)
cpu_spec.append(':-mcpu=430')
cpu_spec[:] = [ '%{!mcpu=*:%{', '; '.join(cpu_spec), '}}', '%{mcpu=*}' ]
mpy_spec.append(':-mmpy=none')
mpy_spec[:] = [ '%{!mmpy=*:%{', '; '.join(mpy_spec), '}}', '%{mmpy=*}' ]
ivcnt_spec.append(':-mivcnt=16')
ivcnt_spec[:] = [ '%{!mivcnt=*:%{', '; '.join(ivcnt_spec), '}}', '%{mivcnt=*}' ]
outf = file(analysis_path('msp430mcu.spec'), 'w')
for (block, spec) in sections.items():
outf.write("*msp430_%s: %s\n\n" % (block, " ".join(spec)))
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