1 # Copyright (C) 2003-2015 Free Software Foundation, Inc.
3 # This file is part of the GNU Binutils.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 if {![istarget mips*-*-*] || ![is_elf_format]} {
25 if {[istarget mips*-*-irix6*]} {
26 set ldemul "-melf32bsmip"
27 } elseif {[istarget mips*el-*-linux*]} {
28 set ldemul "-melf32ltsmip"
29 } elseif {[istarget mips*-*-linux*]} {
30 set ldemul "-melf32btsmip"
31 } elseif {[istarget mips*el-*-*freebsd*]} {
32 set ldemul "-melf32ltsmip_fbsd"
33 } elseif {[istarget mips*-*-*freebsd*]} {
34 set ldemul "-melf32btsmip_fbsd"
39 # Assemble jr.s using each of the argument lists in ARGLIST. Return the
40 # list of object files on success and an empty list on failure.
41 proc assemble_for_flags {arglist} {
42 global as srcdir subdir
47 foreach args $arglist {
48 set obj "tmpdir/mips-flags-${index}.o"
49 if {![ld_assemble $as "$args $srcdir/$subdir/jr.s" $obj]} {
58 # Assemble a file using each set of arguments in ARGLIST. Check that
59 # the objects can be linked together and that the readelf output
60 # includes each flag named in FLAGS.
61 proc good_combination {arglist flags} {
62 global ld ldemul READELF
64 set finalobj "tmpdir/mips-flags.o"
65 set testname "MIPS compatible objects: $arglist"
66 set objs [assemble_for_flags $arglist]
70 } elseif {![ld_simple_link "$ld $ldemul" $finalobj "-r $objs"]} {
73 catch "exec $READELF --headers $finalobj" output
74 if {![regexp "Flags: *(\[^\n\]*)" $output full gotflags]} {
79 # GOTFLAGS is a list of flags separated by ", ".
80 # Convert it to a tcl list.
81 regsub -all ", " $gotflags "," gotflags
82 set gotflags [split $gotflags ","]
85 if {[lsearch -exact $gotflags $flag] < 0} {
98 # Like good_combination, but check that the objects can't be linked
99 # together successfully and that the output includes MESSAGE.
100 proc bad_combination {arglist message} {
101 global link_output ld ldemul
103 set finalobj "tmpdir/mips-flags.o"
104 set testname "MIPS incompatible objects: $arglist"
105 set objs [assemble_for_flags $arglist]
109 } elseif {[ld_simple_link "$ld $ldemul" $finalobj "-r $objs"]
110 || [string first $message $link_output] < 0} {
117 # Routines to check for various kinds of incompatibility.
119 proc abi_conflict {arglist firstabi secondabi} {
120 bad_combination $arglist \
121 "linking $secondabi module with previous $firstabi modules"
124 proc isa_conflict {arglist firstisa secondisa} {
125 bad_combination $arglist \
126 "linking mips:$secondisa module with previous mips:$firstisa modules"
129 proc regsize_conflict {arglist} {
130 bad_combination $arglist \
131 "linking 32-bit code with 64-bit code"
134 abi_conflict { "-mabi=eabi -mgp32" "-mips4 -mabi=32" } EABI32 O32
135 abi_conflict { "-mips4 -mabi=o64" "-mips3 -mabi=eabi" } O64 EABI64
137 isa_conflict { "-march=vr5500 -32" "-march=sb1 -32" } 5500 sb1
138 isa_conflict { "-march=vr5400 -32" "-march=4120 -32" } 5400 4120
139 isa_conflict { "-march=r3900 -32" "-march=r6000 -32" } 3900 6000
140 isa_conflict { "-march=r4010 -32" "-march=r4650 -32" } 4010 4650
141 isa_conflict { "-mips3 -mgp32 -32" "-mips32 -32" } 4000 isa32
142 isa_conflict { "-march=sb1 -mgp32 -32" "-mips32r2 -32" } sb1 isa32r2
143 isa_conflict { "-march=sb1 -32" "-mips64r2 -32" } sb1 isa64r2
145 isa_conflict { "-march=vr4100 -32" "-march=r10000 -32" } 4100 8000
146 isa_conflict { "-march=r5900 -32" "-march=vr4111 -32" } 5900 4111
147 isa_conflict { "-march=loongson2e -32" "-march=loongson2f -32" } loongson_2e loongson_2f
148 isa_conflict { "-march=loongson3a -32" "-march=loongson2f -32" } loongson_3a loongson_2f
150 regsize_conflict { "-mips4 -mgp64 -mabi=o64" "-mips2 -32" }
151 regsize_conflict { "-mips4 -mabi=o64" "-mips4 -mabi=32" }
152 regsize_conflict { "-mips4 -mabi=eabi -mgp32" "-mips4 -mabi=eabi -mgp64" }
153 regsize_conflict { "-march=vr5000 -mgp64 -mabi=o64" "-march=vr5000 -mgp32 -32" }
154 regsize_conflict { "-mips32 -32" "-mips64 -mabi=o64" }
155 regsize_conflict { "-mips32r2 -32" "-mips64 -mabi=o64" }
156 regsize_conflict { "-mips32r2 -32" "-mips64r2 -mabi=o64" }
158 good_combination { "-mips4 -mgp32 -32" "-mips2 -32" } { mips4 o32 }
159 good_combination { "-mips4 -mabi=32" "-mips2 -32" } { mips4 o32 }
160 good_combination { "-mips2 -32" "-mips4 -mabi=32" } { mips4 o32 }
161 good_combination { "-mips2 -mabi=eabi" "-mips4 -mabi=eabi -mgp32" } { mips4 eabi32 }
162 good_combination { "-mips2 -32" "-mips32 -32" "-mips32r2 -32" } { mips32r2 }
163 good_combination { "-mips1 -32" "-mips32r2 -32" "-mips32 -32" } { mips32r2 }
165 good_combination { "-march=vr4100 -32" "-march=vr4120 -32" } { 4120 }
166 good_combination { "-march=vr5400 -32" "-march=vr5500 -32" "-mips4 -32" } { 5500 }
167 good_combination { "-mips3 -32" "-mips4 -32" "-march=sb1 -32" "-mips5 -32" } { sb1 }
168 good_combination { "-mips1 -32" "-march=3900 -32" } { 3900 }
169 good_combination { "-mips3 -32" "-mips64r2 -32" " -mips64 -32" } { mips64r2 }
171 good_combination { "-march=vr4120 -mabi=32" "-mips3 -mabi=32" } { 4120 o32 }
172 good_combination { "-march=sb1 -mgp32 -32" "-march=4000 -mgp32 -32" } { sb1 o32 }
173 good_combination { "-mips32 -mabi=32" "-march=sb1 -mabi=32" } { sb1 o32 }
174 good_combination { "-mips64r2 -mabi=32" "-mips32 -mabi=32" } { mips64r2 o32 }
175 good_combination { "-mips5 -mabi=o64" "-mips64r2 -mabi=o64" } { mips64r2 o64 }