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1 # Copyright (C) 2011-2020 Free Software Foundation, Inc.
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2 #
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3 # This file is part of GCC.
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4 #
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5 # GCC is free software; you can redistribute it and/or modify it under
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6 # the terms of the GNU General Public License as published by the Free
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7 # Software Foundation; either version 3, or (at your option) any later
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8 # version.
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9 #
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10 # GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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11 # WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 # for more details.
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14 #
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15 # You should have received a copy of the GNU General Public License
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16 # along with GCC; see the file COPYING3. If not see
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17 # <http://www.gnu.org/licenses/>.
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18
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19 ##################################################################
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20 #
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21 # Transform Core/Device Information from avr-mcus.def to a
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22 # Representation that is understood by GCC's multilib Machinery.
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23 #
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24 # The Script works as a Filter from STDIN to STDOUT.
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25 # It generates a Makefile Snippet that sets some
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26 # MULTILIB_* Variables as needed.
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27 #
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28 ##################################################################
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29
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30 BEGIN {
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31 FS ="[(, \t]+"
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32 option[""] = ""
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33 comment = 1
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34
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35 dir_tiny = "tiny-stack"
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36 opt_tiny = "msp8"
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37
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38 dir_rcall = "short-calls"
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39 opt_rcall = "mshort-calls"
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40
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41 # awk Variable Makefile Variable
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42 # ------------------------------------------
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43 # m_options <-> MULTILIB_OPTIONS
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44 # m_dirnames <-> MULTILIB_DIRNAMES
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45 # m_required <-> MULTILIB_REQUIRED
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145
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46 # m_reuse <-> MULTILIB_REUSE
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47 m_sep = ""
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48 m_options = "\nMULTILIB_OPTIONS = "
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49 m_dirnames = "\nMULTILIB_DIRNAMES ="
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50 m_required = "\nMULTILIB_REQUIRED ="
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145
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51 m_reuse = "\nMULTILIB_REUSE ="
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52
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53 have_long_double_is_double = (HAVE_LONG_DOUBLE_IS_DOUBLE \
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54 == "HAVE_LONG_DOUBLE_IS_DOUBLE")
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55 have_double32 = (HAVE_DOUBLE32 == "HAVE_DOUBLE32")
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56 have_double64 = (HAVE_DOUBLE64 == "HAVE_DOUBLE64")
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57 have_long_double32 = (HAVE_LONG_DOUBLE32 == "HAVE_LONG_DOUBLE32")
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58 have_long_double64 = (HAVE_LONG_DOUBLE64 == "HAVE_LONG_DOUBLE64")
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59
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60 have_double_multi = (have_double32 && have_double64)
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61 have_long_double_multi = (! have_long_double_is_double \
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62 && have_long_double32 && have_long_double64)
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63
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64 # How to switch away from the default.
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65 dir_double = "double" (96 - with_double)
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66 opt_double = "mdouble=" (96 - with_double)
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67
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68 dir_long_double = "long-double" (96 - with_long_double)
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69 opt_long_double = "mlong-double=" (96 - with_long_double)
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111
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70 }
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71
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72 ##################################################################
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73 # Add some Comments to the generated Files and copy-paste
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74 # Copyright Notice from above.
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75 ##################################################################
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76
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77 /^#/ {
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78 if (!comment)
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79 next
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80 else if (comment == 1)
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81 {
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82 print "# Auto-generated Makefile Snip"
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83 print "# Generated by : ./gcc/config/avr/genmultilib.awk"
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84 print "# Generated from : ./gcc/config/avr/avr-mcus.def"
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85 print "# Used by : tmake_file from Makefile and genmultilib"
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86 print ""
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87 }
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88
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89 comment = 2;
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90
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91 print
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92 }
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93
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94 /^$/ {
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95 # The first empty line stops copy-pasting the GPL comments
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96 # from this file to the generated file.
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97
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145
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98 if (comment)
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99 {
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100 print
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101
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102 if (have_double_multi)
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103 {
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104 print "# dir_double = " dir_double
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105 print "# opt_double = -" opt_double
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106 }
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107 else
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108 print "# No multilib for double."
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109
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110 if (have_long_double_multi)
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111 {
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112 print "# dir_long_double = " dir_long_double
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113 print "# opt_long_double = -" opt_long_double
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114 }
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115 else
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116 print "# No multilib for long double."
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117 }
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111
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118 comment = 0
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119 }
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120
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121 ##################################################################
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122 # Run over all AVR_MCU Lines. If we encounter a required multilib
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123 # variant, add according combination of options to m_required,
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124 # but onyl once. Add encountered cores to m_dirnames and
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125 # according -mmcu= options to m_options.
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126 ##################################################################
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127
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128 /^AVR_MCU/ {
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129 name = $2
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130 gsub ("\"", "", name)
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131
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132 if ($5 == "NULL")
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133 {
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134 core = name
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135
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136 # avr1 is supported for Assembler only: It gets no multilib
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137 if (core == "avr1")
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138 next
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139
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140 option[core] = "mmcu=" core
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141
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142 m_options = m_options m_sep option[core]
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143 m_dirnames = m_dirnames " " core
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144 m_sep = "/"
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145
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146 next
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147 }
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148
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149 # avr1 is supported for Assembler only: Its Devices are ignored
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150 if (core == "avr1")
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151 next
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152
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153 opts = option[core]
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154
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155 # split device specific feature list
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156 n = split($4,dev_attribute,"|")
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157
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158 for (i=1; i <= n; i++)
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159 {
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160 if (dev_attribute[i] == "AVR_SHORT_SP")
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161 opts = opts "/" opt_tiny
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162 if (dev_attribute[i] == "AVR_ISA_RCALL")
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163 opts = opts "/" opt_rcall
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164 }
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165
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166 if (!have[opts])
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167 {
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168 have[opts] = 1
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169 # Some special handling for the default mmcu: Remove a
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170 # leading "mmcu=avr2/" in order not to confuse genmultilib.
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171 gsub (/^mmcu=avr2\//, "", opts)
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172 if (opts != "mmcu=avr2")
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145
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173 {
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174 m_required = m_required " \\\n\t" opts
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145
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175 if (have_double_multi && have_long_double_multi)
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176 {
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177 m_required = m_required " \\\n\t" opts "/" opt_double
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178 m_required = m_required " \\\n\t" opts "/" opt_long_double
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179
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180 # We have only 3 different combinations because -mdouble=64
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181 # implies -mlong-double=64, and -mlong-double=32 implies
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182 # -mdouble=32, hence add respective reuses. The reuse is
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183 # not needed in the case with_double != with_long_double
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184 # which means with_double=32 with_long_double=64 because
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185 # the driver will rectify combining -mdouble=64 and
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186 # -mlong-double=32.
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187 if (with_double == with_long_double)
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188 {
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189 d_opts = with_double == 32 ? opt_double : opt_long_double
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190 d_opts = opts "/" d_opts
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191 d_reuse = opts "/" opt_double "/" opt_long_double
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192 gsub (/=/, ".", d_opts)
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193 gsub (/=/, ".", d_reuse)
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194 m_reuse = m_reuse " \\\n\t" d_opts "=" d_reuse
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195 }
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196 }
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197 else if (have_double_multi)
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198 m_required = m_required " \\\n\t" opts "/" opt_double
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199 else if (have_long_double_multi)
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200 m_required = m_required " \\\n\t" opts "/" opt_long_double
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201 }
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111
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202 }
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203 }
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204
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205 ##################################################################
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206 #
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207 ##################################################################
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208
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209 END {
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210 ############################################################
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211 # Output that Stuff
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212 ############################################################
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213
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214 # Intended Target: $(top_builddir)/gcc/t-multilib-avr
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215
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216 if (have_double_multi && have_long_double_multi)
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217 {
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218 print m_options " " opt_tiny " " opt_rcall " " opt_double "/" opt_long_double
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219 print m_dirnames " " dir_tiny " " dir_rcall " " dir_double " " dir_long_double
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220 # Notice that the ./double* and ./long-double* variants cannot
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221 # be copied by t-avrlibc because the . default multilib is built
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222 # after all the others.
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223 m_required = m_required " \\\n\t" opt_double
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224 m_required = m_required " \\\n\t" opt_long_double
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225 if (with_double == with_long_double)
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226 {
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227 d_opts = with_double == 32 ? opt_double : opt_long_double
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228 d_reuse = opt_double "/" opt_long_double
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229 gsub (/=/, ".", d_opts)
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230 gsub (/=/, ".", d_reuse)
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231 m_reuse = m_reuse " \\\n\t" d_opts "=" d_reuse
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111
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232
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145
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233 }
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234 }
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235 else if (have_double_multi)
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236 {
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237 print m_options " " opt_tiny " " opt_rcall " " opt_double
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238 print m_dirnames " " dir_tiny " " dir_rcall " " dir_double
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239 m_required = m_required " \\\n\t" opt_double
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240 }
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241 else if (have_long_double_multi)
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242 {
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243 print m_options " " opt_tiny " " opt_rcall " " opt_long_double
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244 print m_dirnames " " dir_tiny " " dir_rcall " " dir_long_double
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245 m_required = m_required " \\\n\t" opt_long_double
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246 }
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247 else
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248 {
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249 print m_options " " opt_tiny " " opt_rcall
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250 print m_dirnames " " dir_tiny " " dir_rcall
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251 }
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252
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253 print m_required
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254 print m_reuse
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255 }
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