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# Copyright (C) 2011-2018 Free Software Foundation, Inc.
#
# 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/>.
##################################################################
#
# Transform Core/Device Information from avr-mcus.def to a
# Representation that is understood by GCC's multilib Machinery.
#
# The Script works as a Filter from STDIN to STDOUT.
# It generates a Makefile Snippet that sets some
# MULTILIB_* Variables as needed.
#
##################################################################
BEGIN {
FS ="[(, \t]+"
option[""] = ""
comment = 1
dir_tiny = "tiny-stack"
opt_tiny = "msp8"
dir_rcall = "short-calls"
opt_rcall = "mshort-calls"
# awk Variable Makefile Variable
# ------------------------------------------
# m_options <-> MULTILIB_OPTIONS
# m_dirnames <-> MULTILIB_DIRNAMES
# m_required <-> MULTILIB_REQUIRED
m_sep = ""
m_options = "\nMULTILIB_OPTIONS = "
m_dirnames = "\nMULTILIB_DIRNAMES ="
m_required = "\nMULTILIB_REQUIRED ="
}
##################################################################
# Add some Comments to the generated Files and copy-paste
# Copyright Notice from above.
##################################################################
/^#/ {
if (!comment)
next
else if (comment == 1)
{
print "# Auto-generated Makefile Snip"
print "# Generated by : ./gcc/config/avr/genmultilib.awk"
print "# Generated from : ./gcc/config/avr/avr-mcus.def"
print "# Used by : tmake_file from Makefile and genmultilib"
print ""
}
comment = 2;
print
}
/^$/ {
# The first empty line stops copy-pasting the GPL comments
# from this file to the generated file.
comment = 0
}
##################################################################
# Run over all AVR_MCU Lines. If we encounter a required multilib
# variant, add according combination of options to m_required,
# but onyl once. Add encountered cores to m_dirnames and
# according -mmcu= options to m_options.
##################################################################
/^AVR_MCU/ {
name = $2
gsub ("\"", "", name)
if ($5 == "NULL")
{
core = name
# avr1 is supported for Assembler only: It gets no multilib
if (core == "avr1")
next
option[core] = "mmcu=" core
m_options = m_options m_sep option[core]
m_dirnames = m_dirnames " " core
m_sep = "/"
next
}
# avr1 is supported for Assembler only: Its Devices are ignored
if (core == "avr1")
next
opts = option[core]
# split device specific feature list
n = split($4,dev_attribute,"|")
for (i=1; i <= n; i++)
{
if (dev_attribute[i] == "AVR_SHORT_SP")
opts = opts "/" opt_tiny
if (dev_attribute[i] == "AVR_ISA_RCALL")
opts = opts "/" opt_rcall
}
if (!have[opts])
{
have[opts] = 1
# Some special handling for the default mmcu: Remove a
# leading "mmcu=avr2/" in order not to confuse genmultilib.
gsub (/^mmcu=avr2\//, "", opts)
if (opts != "mmcu=avr2")
m_required = m_required " \\\n\t" opts
}
}
##################################################################
#
##################################################################
END {
############################################################
# Output that Stuff
############################################################
# Intended Target: ./gcc/config/avr/t-multilib
print m_options " " opt_tiny " " opt_rcall
print m_dirnames " " dir_tiny " " dir_rcall
print m_required
}
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