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# Copyright 2003 Free Software Foundation, Inc.
#
# This file 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
if {![istarget mips*-*-*] || ![is_elf_format]} {
return
}
global ldemul
if {[istarget mips*-*-irix6*]} {
set ldemul "-melf32bsmip"
} elseif {[istarget mips*el-*-linux*]} {
set ldemul "-melf32ltsmip"
} elseif {[istarget mips*-*-linux*]} {
set ldemul "-melf32btsmip"
} else {
set ldemul ""
}
# Assemble jr.s using each of the argument lists in ARGLIST. Return the
# list of object files on success and an empty list on failure.
proc assemble_for_flags {arglist} {
global as srcdir subdir
set objs {}
set index 1
foreach args $arglist {
set obj "tmpdir/mips-flags-${index}.o"
if {![ld_assemble $as "$args $srcdir/$subdir/jr.s" $obj]} {
return ""
}
lappend objs $obj
incr index
}
return $objs
}
# Assemble a file using each set of arguments in ARGLIST. Check that
# the objects can be linked together and that the readelf output
# includes each flag named in FLAGS.
proc good_combination {arglist flags} {
global ld ldemul READELF
set finalobj "tmpdir/mips-flags.o"
set testname "MIPS compatible objects: $arglist"
set objs [assemble_for_flags $arglist]
if {$objs == ""} {
unresolved $testname
} elseif {![ld_simple_link "$ld $ldemul" $finalobj "-r $objs"]} {
fail $testname
} else {
catch "exec $READELF --headers $finalobj" output
if {![regexp "Flags: *(\[^\n\]*)" $output full gotflags]} {
unresolved $testname
} else {
set failed 0
# GOTFLAGS is a list of flags separated by ", ".
# Convert it to a tcl list.
regsub -all ", " $gotflags "," gotflags
set gotflags [split $gotflags ","]
foreach flag $flags {
if {[lsearch -exact $gotflags $flag] < 0} {
set failed 1
}
}
if {$failed} {
fail $testname
} else {
pass $testname
}
}
}
}
# Like good_combination, but check that the objects can't be linked
# together successfully and that the output includes MESSAGE.
proc bad_combination {arglist message} {
global link_output ld ldemul
set finalobj "tmpdir/mips-flags.o"
set testname "MIPS incompatible objects: $arglist"
set objs [assemble_for_flags $arglist]
if {$objs == ""} {
unresolved $testname
} elseif {[ld_simple_link "$ld $ldemul" $finalobj "-r $objs"]
|| [string first $message $link_output] < 0} {
fail $testname
} else {
pass $testname
}
}
# Routines to check for various kinds of incompatibility.
proc abi_conflict {arglist firstabi secondabi} {
bad_combination $arglist \
"linking $secondabi module with previous $firstabi modules"
}
proc isa_conflict {arglist firstisa secondisa} {
bad_combination $arglist \
"linking mips:$secondisa module with previous mips:$firstisa modules"
}
proc regsize_conflict {arglist} {
bad_combination $arglist \
"linking 32-bit code with 64-bit code"
}
abi_conflict { "-mabi=eabi -mgp32" "-mips4 -mabi=32" } EABI32 O32
abi_conflict { "-mips4 -mabi=o64" "-mips3 -mabi=eabi" } O64 EABI64
isa_conflict { "-march=vr5500 -32" "-march=sb1 -32" } 5500 sb1
isa_conflict { "-march=vr5400 -32" "-march=4120 -32" } 5400 4120
isa_conflict { "-march=r3900 -32" "-march=r6000 -32" } 3900 6000
isa_conflict { "-march=r4010 -32" "-march=r4650 -32" } 4010 4650
isa_conflict { "-mips3 -mgp32 -32" "-mips32 -32" } 4000 isa32
isa_conflict { "-march=sb1 -mgp32 -32" "-mips32r2 -32" } sb1 isa32r2
isa_conflict { "-march=sb1 -32" "-mips64r2 -32" } sb1 isa64r2
regsize_conflict { "-mips4 -mgp64 -mabi=o64" "-mips2 -32" }
regsize_conflict { "-mips4 -mabi=o64" "-mips4 -mabi=32" }
regsize_conflict { "-mips4 -mabi=eabi -mgp32" "-mips4 -mabi=eabi -mgp64" }
regsize_conflict { "-march=vr5000 -mgp64 -mabi=o64" "-march=vr5000 -mgp32 -32" }
regsize_conflict { "-mips32 -32" "-mips64 -mabi=o64" }
regsize_conflict { "-mips32r2 -32" "-mips64 -mabi=o64" }
regsize_conflict { "-mips32r2 -32" "-mips64r2 -mabi=o64" }
good_combination { "-mips4 -mgp32 -32" "-mips2 -32" } { mips4 o32 }
good_combination { "-mips4 -mabi=32" "-mips2 -32" } { mips4 o32 }
good_combination { "-mips2 -32" "-mips4 -mabi=32" } { mips4 o32 }
good_combination { "-mips2 -mabi=eabi" "-mips4 -mabi=eabi -mgp32" } { mips4 eabi32 }
good_combination { "-mips2 -32" "-mips32 -32" "-mips32r2 -32" } { mips32r2 }
good_combination { "-mips1 -32" "-mips32r2 -32" "-mips32 -32" } { mips32r2 }
good_combination { "-march=vr4100 -32" "-march=vr4120 -32" } { 4120 }
good_combination { "-march=vr5400 -32" "-march=vr5500 -32" "-mips4 -32" } { 5500 }
good_combination { "-mips3 -32" "-mips4 -32" "-march=sb1 -32" "-mips5 -32" } { sb1 }
good_combination { "-mips1 -32" "-march=3900 -32" } { 3900 }
good_combination { "-mips3 -32" "-mips64r2 -32" "-mips64 -32" } { mips64r2 }
good_combination { "-march=vr4120 -mabi=32" "-mips3 -mabi=32" } { 4120 o32 }
good_combination { "-march=sb1 -mgp32 -32" "-march=4000 -mgp32 -32" } { sb1 o32 }
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