#!/usr/bin/python3
#
#  Copyright (c) 2020 Peter Hsu.  All Rights Reserved.  See LICENCE file for details.
#


import sys
import re

FPdef = open('FPoperations.def', 'r')
f = open('caveat_fp.h', 'w')

if sys.argv[1] == 'soft':
    f.write('#define SOFT_FP\n')
elif sys.argv[1] == 'hard':
    f.write('// Do not define SOFT_FP\n')
else:
    print('Bad Argument', sys.argv[1])
    exit(-1)
f.write('#ifndef NO_FP_MACROS\n')

for line in FPdef:
    line = line.rstrip('\r\n')
#    print(line)
    if line == '' or line[0] != '@':
        continue
    (macro, rm, fpx, soft, type, hard) = re.split('\t+', line)
    macro = macro[1:]
    macro_dyn = re.sub('\(\s*rm,\s*', '_dyn(', macro)
#    funcs = [ 'f32', 'f64', 'nf32', 'nf64', 'i32', 'ui32', 'i64', 'ui64' ]
#    for x in funcs:
#        soft = soft.replace('.'+x, '.'+x+'()')
#    funcs = [ 'l', 'ul', 'i', 'ui', 'd', 'f' ]
#    for x in funcs:
#        hard = hard.replace('.'+x, '.'+x)
#        hard = hard.replace('.'+x, '.'+x+'()')
    if (sys.argv[1] == 'soft'):
        (srm, fpx) = ('', '')
        if rm != '-':
            srm = ' SRM(rm);'
            rrm = ' SRM(cpu->state.fcsr.rmode);'
        if fpx != '-':
            fpx = ' SET_FPX;'
        f.write('#define {:s}{:s} {:s};{:s}{:s}\n'.format(macro, srm, soft, fpx, rrm))
        if rm != '-':
            f.write('#define {:s} {:s};{:s}\n'.format(macro_dyn, soft, fpx))
    elif (sys.argv[1] == 'hard'):
        (srm, rrm, fpx) = ('', '', '')
        if rm != '-':
            srm = ' SRM(rm);'
            rrm = ' RRM(rm);'
        if fpx != '-':
            fpx = ' SET_FPX;'
        f.write('#define {:s}{:s} {:s};{:s}{:s}\n'.format(macro, srm, hard, fpx, rrm))
        if rm != '-':
            f.write('#define {:s} {:s};{:s}\n'.format(macro_dyn, hard, fpx))

f.write('#endif\n')
f.close()
FPdef.close()