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#   Copyright (C) 2002, 2004, 2007 Free Software Foundation, Inc.

# 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 GCC; see the file COPYING3.  If not see

# .

# This test checks whether MIPS ELF configurations pass the right

# ABI flags to the assembler.  An ABI flag should always be passed

# unless MEABI is selected.

load_lib gcc-dg.exp

# Only run this test on MIPS ELF targets

if {![istarget mips*-*-*] || [gcc_target_object_format] != "elf"} {

    return

}

# A list of all assembler ABI flags.

set asm_abi_flags {-mabi=32 -mabi=n32 -mabi=64 -mabi=o64 -mabi=eabi}

# Try to assemble mips-abi.s (an empty file), passing -v in order to

# get the assembler command line.  Check whether an appropriate ABI

# flag is passed.

#

# NAME is a name for the pass/fail line.

# ABIS is a list of acceptable assembler ABI flags, or "" if no

#   ABI flag is expected.

# FLAGS is a list of options for gcc.

proc check_mips_abi {name abis flags} {

    global srcdir subdir

    lappend flags "-v"

    set lines [gcc_target_compile "$srcdir/$subdir/mips-abi.s" \

                                  "mips-abi.o" object \

                                  [list "additional_flags=$flags"]]

    set good 0

    set bad 0

    foreach line [split $lines "\n"] {

        # Find the assembler command line.

        if {[string first "$srcdir/$subdir/mips-abi.s" $line] >= 0} {

            foreach arg [split $line " "] {

                # Count the number of matching and non-matching

                # ABI options.

                if {[lsearch -exact $abis $arg] >= 0} {

                    incr good

                } elseif {[string match "-mabi=*" $arg]} {

                    incr bad

                }

            }

        }

    }

    if {$good == ($abis != "") && $bad == 0} {

        pass "mips-abi $name"

    } else {

        fail "mips-abi $name"

    }

}

# Collect the default target flags.

set default_flags ""

set target [target_info name]

if {[info exists CFLAGS_FOR_TARGET]} {

    append default_flags " $CFLAGS_FOR_TARGET"

}

if {[board_info $target exists cflags]} {

    append default_flags " [board_info $target cflags]"

}

if {[board_info $target exists multilib_flags]} {

    append default_flags " [board_info $target multilib_flags]"

}

# See whether the default command line specifies an ABI.

set default_abi ""

foreach flag $default_flags {

    if {[string match "-mabi=*" $flag]} {

        set default_abi $flag

    }

}

# If the command line does specify an ABI, just check for the

# appropriate assembler flag.

if {$default_abi != ""} {

    check_mips_abi "command line" $default_abi ""

} else {

    # An ABI should be passed to the assembler by default.

    # It doesn't seem worthwhile to duplicate the

    # configuration to ABI logic here, so just accept any ABI.

    check_mips_abi "default" $asm_abi_flags ""

    # See whether passing a -mabi flag does the right thing.

    foreach abi $asm_abi_flags {

        check_mips_abi $abi $abi $abi

    }

}