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Diffstat (limited to 'gcc-4.9/gcc/config/avr/genmultilib.awk')
| -rw-r--r-- | gcc-4.9/gcc/config/avr/genmultilib.awk | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/avr/genmultilib.awk b/gcc-4.9/gcc/config/avr/genmultilib.awk new file mode 100644 index 000000000..90e5e5cfd --- /dev/null +++ b/gcc-4.9/gcc/config/avr/genmultilib.awk @@ -0,0 +1,216 @@ +# Copyright (C) 2011-2014 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. +# +# FORMAT = "Makefile": Generate Makefile Snipet that sets some +# MULTILIB_* Variables as needed. +# +################################################################## + +BEGIN { + FS ="[(, \t]+" + option[""] = "" + tiny_stack[""] = 1 + comment = 1 + n_mcu = 0 + n_cores = 0 + + mtiny[0] = "" + mtiny[1] = "tiny-stack" + option["tiny-stack"] = "msp8" +} + +################################################################## +# Add some Comments to the generated Files and copy-paste +# Copyright Notice from above. +################################################################## + +/^#/ { + if (!comment) + next + else if (comment == 1) + { + if (FORMAT == "Makefile") + { + 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 and gather Information: +# cores[] : Enumerates the Cores (avr2, avr25, ...) +# mcu[] : Enumerates the Devices +# tiny_stack[]: Maps Core/Device to 0 (2-byte SP) or 1 (1-byte SP) +# option[] : Maps Core/Device to the mmcu= option to get it +# toCore[] : Maps Device to its Core +################################################################## + +/^AVR_MCU/ { + name = $2 + gsub ("\"", "", name) + + if ($4 == "NULL") + { + core = name + + # avr1 is supported for Assembler only: It gets no multilib + if (core == "avr1") + next + + cores[n_cores] = core + n_cores++ + tiny_stack[core] = 0 + option[core] = "mmcu=" core + + next + } + + # avr1 is supported for Assembler only: Its Devices are ignored + if (core == "avr1") + next + + tiny_stack[name] = $5 + mcu[n_mcu] = name + n_mcu++ + option[name] = "mmcu=" name + toCore[name] = core + + if (tiny_stack[name] == 1) + tiny_stack[core] = 1 +} + +################################################################## +# +# We gathered all the Information, now build/output the following: +# +# awk Variable target Variable FORMAT +# ----------------------------------------------------------- +# m_options <-> MULTILIB_OPTIONS Makefile +# m_dirnames <-> MULTILIB_DIRNAMES " +# m_exceptions <-> MULTILIB_EXCEPTIONS " +# m_matches <-> MULTILIB_MATCHES " +# +################################################################## + +END { + m_options = "\nMULTILIB_OPTIONS = " + m_dirnames = "\nMULTILIB_DIRNAMES =" + m_exceptions = "\nMULTILIB_EXCEPTIONS =" + m_matches = "\nMULTILIB_MATCHES =" + + ############################################################## + # Compose MULTILIB_OPTIONS. This represents the Cross-Product + # (avr2, avr25, ...) x msp8 + + sep = "" + for (c = 0; c < n_cores; c++) + { + m_options = m_options sep option[cores[c]] + sep = "/" + } + + # The ... x msp8 + m_options = m_options " " option[mtiny[1]] + + ############################################################## + # Map Device to its multilib + + for (t = 0; t < n_mcu; t++) + { + core = toCore[mcu[t]] + + line = option[core] ":" option[mcu[t]] + gsub ("=", "?", line) + gsub (":", "=", line) + + m_matches = m_matches " \\\n\t" line + } + + #################################################################### + # Compose MULTILIB_DIRNAMES and MULTILIB_EXEPTIONS + + n_mtiny = 2 + for (t = 0; t < n_mtiny; t++) + for (c = -1; c < n_cores; c++) + { + if (c == -1) + core = "" + else + core = cores[c] + + # The Directory Name for this multilib + + if (core != "" && mtiny[t] != "") + { + mdir = core "/" mtiny[t] + mopt = option[core] "/" option[mtiny[t]] + } + else + { + mdir = core mtiny[t] + mopt = option[core] option[mtiny[t]] + } + + if (core != "" && tiny_stack[core] == 0 && mtiny[t] != "") + { + # There's not a single SP = 8 Devices for this Core: + # Don't build respective multilib + m_exceptions = m_exceptions " \\\n\t" mopt + continue + } + + if (core != "avr2" || mtiny[t] == "") + m_dirnames = m_dirnames " " mdir + } + + ############################################################ + # Output that Stuff + ############################################################ + + if (FORMAT == "Makefile") + { + # Intended Target: ./gcc/config/avr/t-multilib + + print m_options + print m_dirnames + print m_exceptions + print m_matches + } +} |