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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [config/] [avr/] [genmultilib.awk] - Rev 724
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# Copyright (C) 2011 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. # # FORMAT = "multilib.h": Generate C Header intended to override # (parts of) multilib.h used in gcc.c. # ################################################################## BEGIN { FS ="[(, \t]+" option[""] = "" tiny_stack[""] = 1 comment = 1 n_mcu = 0 n_cores = 0 mtiny[0] = "" mtiny[1] = "tiny-stack" option["tiny-stack"] = "mtiny-stack" } ################################################################## # Add some Comments to the generated Files and copy-paste # Copyright Notice from above. ################################################################## /^#/ { if (!comment) next else if (comment == 1) { if (FORMAT == "multilib.h") { print "/*" print " Auto-generated C header" print " Generated by : ./gcc/config/avr/genmultilib.awk" print " Generated from : ./gcc/config/avr/avr-mcus.def" print " Used by : ./gcc/gcc.c via tm.h" print " Purpose : Override multilib_raw[] from multilib.h" print "*/" print "/*" } 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; if (FORMAT == "multilib.h") gsub ("#", " ") print } /^$/ { if (comment && FORMAT == "multilib.h") print "*/" 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 " # m_raw <-> avr_multilib_raw multilib.h # ################################################################## END { m_options = "\nMULTILIB_OPTIONS = " m_dirnames = "\nMULTILIB_DIRNAMES =" m_exceptions = "\nMULTILIB_EXCEPTIONS =" m_matches = "\nMULTILIB_MATCHES =" m_raw = "" ############################################################## # Compose MULTILIB_OPTIONS. This represents the Cross-Product # (avr2, avr25, ...) x mtiny-stack sep = "" for (c = 0; c < n_cores; c++) { m_options = m_options sep option[cores[c]] sep = "/" } # The ... x mtiny-stack m_options = m_options " " option[mtiny[1]] ############################################################## # Map Device to its multilib # All Mappings that cannot be represented by GCC's genmultilib # Machinery must be handcrafted. dot_excludes = "" m_raw_sp8 = "" for (t = 0; t < n_mcu; t++) { core = toCore[mcu[t]] if (tiny_stack[mcu[t]] == 1) { if (core == "avr2") dir = mtiny[1] else dir = core "/" mtiny[1] m_raw_sp8 = m_raw_sp8 " \"" dir " " option[mcu[t]] ";\",\n" dot_excludes = dot_excludes " !" option[mcu[t]] line = option[mcu[t]] ":" option[mcu[t]] gsub ("=", "?", line) gsub (":", "=", line) m_matches = m_matches " \\\n\t" line } # The SP = 16 Devices are vanilla: Do the same as # MULTILIB_MATCHES would yield. Don't list avr2 (default) if (core != "avr2") { line = option[core] ":" option[mcu[t]] gsub ("=", "?", line) gsub (":", "=", line) m_matches = m_matches " \\\n\t" line } } #################################################################### # Compose MULTILIB_DIRNAMES, MULTILIB_EXEPTIONS and avr_multilib_raw 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 # Remainder deals with avr_multilib_raw Entries. # Each Entry looks like # "multilib-dir option-to-match !option-to-avoid-match;" # for Example: # "avr25/tiny-stack !mmcu=avr2 mmcu=avr25 !mmcu=avr3 ... mtiny-stack;" if (mdir == "") mdir = "." line = mdir for (s = 0; s < n_cores; s++) { if (cores[s] == core) line = line " " option[cores[s]] else line = line " !" option[cores[s]] } if (tiny_stack[core] != 0) { if (mtiny[t] == "") line = line " !" option[mtiny[1]] else line = line " " option[mtiny[1]] } if (mdir == ".") line = line dot_excludes m_raw = m_raw " \"" line ";\",\n" } ############################################################ # 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 } if (FORMAT == "multilib.h") { # Intended Target: ./gcc/config/avr/multilib.h print "#if defined NULL && !defined AVR_MULTILIB_H" print "#define AVR_MULTILIB_H" print "static const char* const avr_multilib_raw[] = {" print m_raw_sp8 print m_raw print " NULL\n};" print "#undef multilib_raw" print "#define multilib_raw avr_multilib_raw" print "#endif /* AVR_MULTILIB_H */" } }
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