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#!/usr/bin/env python
# RISC-V multilib list generator.
# Copyright (C) 2011-2018 Free Software Foundation, Inc.
# Contributed by Andrew Waterman (andrew@sifive.com).
#
# This file is part of GCC.
#
# GCC is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GCC is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
# Each argument to this script is of the form
# <primary arch>-<abi>-<additional arches>-<extensions>
# For example,
# rv32imafd-ilp32d-rv32g-c,v
# means that, in addition to rv32imafd, these configurations can also use the
# rv32imafd-ilp32d libraries: rv32imafdc, rv32imafdv, rv32g, rv32gc, rv32gv
from __future__ import print_function
import sys
import collections
arches = collections.OrderedDict()
abis = collections.OrderedDict()
required = []
reuse = []
canonical_order = "mafdgqlcbjtpvn"
def arch_canonicalize(arch):
# TODO: Support Z, S, H, or X extensions.
# TODO: Support implied extensions, e.g. D implied F in latest spec.
# TODO: Support extension version.
new_arch = ""
if arch[:5] in ['rv32e', 'rv32i', 'rv32g', 'rv64i', 'rv64g']:
new_arch = arch[:5]
else:
raise Exception("Unexpected arch: `%s`" % arch[:5])
# Find any Z, S, H or X
long_ext_prefixes = ['z', 's', 'h', 'x']
long_ext_prefixes_idx = map(lambda x: arch.find(x), long_ext_prefixes)
# Filter out any non-existent index.
long_ext_prefixes_idx = list(filter(lambda x: x != -1, long_ext_prefixes_idx))
if long_ext_prefixes_idx:
first_long_ext_idx = min(long_ext_prefixes_idx)
long_exts = arch[first_long_ext_idx:]
std_exts = arch[5:first_long_ext_idx]
else:
long_exts = ""
std_exts = arch[5:]
# Put extensions in canonical order.
for ext in canonical_order:
if ext in std_exts:
new_arch += ext
# Concat rest of the multi-char extensions.
new_arch += long_exts
return new_arch
for cfg in sys.argv[1:]:
(arch, abi, extra, ext) = cfg.split('-')
arches[arch] = 1
abis[abi] = 1
extra = list(filter(None, extra.split(',')))
ext = list(filter(None, ext.split(',')))
alts = sum([[x] + [x + y for y in ext] for x in [arch] + extra], [])
# TODO: We should expand g to imadzifencei once we support newer spec.
alts = alts + [x.replace('imafd', 'g') for x in alts if 'imafd' in x]
alts = list(map(arch_canonicalize, alts))
for alt in alts[1:]:
arches[alt] = 1
reuse.append('march.%s/mabi.%s=march.%s/mabi.%s' % (arch, abi, alt, abi))
required.append('march=%s/mabi=%s' % (arch, abi))
arch_options = '/'.join(['march=%s' % x for x in arches.keys()])
arch_dirnames = ' \\\n'.join(arches.keys())
abi_options = '/'.join(['mabi=%s' % x for x in abis.keys()])
abi_dirnames = ' \\\n'.join(abis.keys())
prog = sys.argv[0].split('/')[-1]
print('# This file was generated by %s with the command:' % prog)
print('# %s' % ' '.join(sys.argv))
print('MULTILIB_OPTIONS = %s %s' % (arch_options, abi_options))
print('MULTILIB_DIRNAMES = %s %s' % (arch_dirnames, abi_dirnames))
print('MULTILIB_REQUIRED = %s' % ' \\\n'.join(required))
print('MULTILIB_REUSE = %s' % ' \\\n'.join(reuse))
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