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#   Copyright 2003, 2007 Free Software Foundation, Inc.

#

# This file is part of the GNU Binutils.

#

# This program 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 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., 51 Franklin Street - Fifth Floor, Boston,

# MA 02110-1301, 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 }

good_combination { "-mips32 -mabi=32" "-march=sb1 -mabi=32" } { sb1 o32 }

good_combination { "-mips64r2 -mabi=32" "-mips32 -mabi=32" } { mips64r2 o32 }

good_combination { "-mips5 -mabi=o64" "-mips64r2 -mabi=o64" } { mips64r2 o64 }