#   Copyright (C) 1997 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  

# GCC testsuite that uses the `dg.exp' driver.

# Exit immediately if this isn't a MIPS target.
if ![istarget mips*-*-*] {
  return
}

# Load support procs.
load_lib gcc-dg.exp

# Find out which target is selected by the default compiler flags.
# Also remember which aspects of the target are forced on the command
# line (as opposed to being overridable defaults).
#
#    $mips_isa:		 the ISA level specified by __mips
#    $mips_arch:	 the architecture specified by _MIPS_ARCH
#    $mips_mips16:	 true if MIPS16 mode is selected
#    $mips_mips64:	 true if 64-bit output is selected
#    $mips_float:	 "hard" or "soft"
#
#    $mips_forced_isa:	 true if the command line uses -march=* or -mips*
#    $mips_forced_abi:	 true if the command line uses -mabi=* or -mgp*
#    $mips_forced_float: true if the command line uses -mhard/soft-float
proc setup_mips_tests {} {
    global mips_isa
    global mips_arch
    global mips_mips16
    global mips_mips64
    global mips_float

    global mips_forced_isa
    global mips_forced_abi
    global mips_forced_float

    global compiler_flags
    global tool

    set src dummy[pid].c
    set f [open $src "w"]
    puts $f {
	int isa = __mips;
	const char *arch = _MIPS_ARCH;
	#ifdef __mips16
	int mips16 = 1;
	#endif
	#ifdef __mips64
	int mips64 = 1;
	#endif
	#ifdef __mips_hard_float
	const char *float = "hard";
	#else
	const char *float = "soft";
	#endif
    }
    close $f
    set output [${tool}_target_compile $src "" preprocess ""]
    file delete $src

    regexp {isa = ([^;]*)} $output dummy mips_isa
    regexp {arch = "([^"]*)} $output dummy mips_arch
    set mips_mips16 [regexp {mips16 = 1} $output]
    set mips_mips64 [regexp {mips64 = 1} $output]
    regexp {float = "([^"]*)} $output dummy mips_float

    set mips_forced_isa [regexp -- {(-mips|-march)} $compiler_flags]
    set mips_forced_abi [regexp -- {(-mgp|-mfp|-mabi)} $compiler_flags]
    set mips_forced_float [regexp -- {-m(hard|soft)-float} $compiler_flags]
}

# Return true if command-line option FLAG forces 32-bit code.
proc is_gp32_flag {flag} {
    switch -glob -- $flag {
	-march=mips32* -
	-mgp32 { return 1 }
	default { return 0 }
    }
}

# Like dg-options, but treats certain MIPS-specific options specially:
#
#    -mgp32
#    -march=mips32*
#	Force 32-bit code.  Skip the test if the multilib flags force
#	a 64-bit ABI.
#
#    -mgp64
#	Force 64-bit code.  Also force a 64-bit target architecture
#	if the other flags don't do so.  Skip the test if the multilib
#	flags force a 32-bit ABI or a 32-bit architecture.
#
#    -mno-mips16
#	Skip the test for MIPS16 targets.
#
#    -march=*
#    -mips*
#	Select the target architecture.  Skip the test for MIPS16 targets
#	or if the multilib flags force a different architecture.
#
#    -msoft-float
#    -mhard-float
#	Select the given floating-point mode.  Skip the test if the
#	multilib flags force a different selection.
proc dg-mips-options {args} {
    upvar dg-extra-tool-flags extra_tool_flags
    upvar dg-do-what do_what

    global mips_isa
    global mips_arch
    global mips_mips16
    global mips_mips64
    global mips_float

    global mips_forced_isa
    global mips_forced_abi
    global mips_forced_float

    set flags [lindex $args 1]
    set matches 1

    # First handle the -mgp* options.  Add an architecture option if necessary.
    foreach flag $flags {
	if {[is_gp32_flag $flag] && $mips_mips64} {
	    if {$mips_forced_abi} {
		set matches 0
	    } else {
		append flags " -mabi=32"
	    }
	} elseif {$flag == "-mgp64" && !$mips_mips64} {
	    if {$mips_forced_abi} {
		set matches 0
	    } else {
		append flags " -mabi=o64"
		if {[lsearch -regexp $flags {^(-mips|-march)}] < 0} {
		    append flags " -mips3"
		}
	    }
	}
    }
    # Handle the other options.
    foreach flag $flags {
	if {$flag == "-mno-mips16"} {
	    if {$mips_mips16} {
		set matches 0
	    }
	} elseif {$flag == "-mfp64"} {
	    if {$mips_isa < 33 || $mips_float != "hard"} {
		set matches 0
	    }
	} elseif {[regexp -- {^-march=(.*)} $flag dummy arch]} {
	    if {$mips_mips16 || ($arch != $mips_arch && $mips_forced_isa)} {
		set matches 0
	    }
	} elseif {[regexp -- {^-mips(.*)} $flag dummy isa] && $isa != 16} {
	    if {$mips_mips16 || ($isa != $mips_isa && $mips_forced_isa)} {
		set matches 0
	    }
	} elseif {[regexp -- {^-m(hard|soft)-float} $flag dummy float]} {
	    if {$mips_float != $float && $mips_forced_float} {
		set matches 0
	    }
	}
    }
    if {$matches} {
	set extra_tool_flags $flags
    } else {
	set do_what [list [lindex $do_what 0] "N" "P"]
    }
}

setup_mips_tests

dg-init
dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.c]] "" ""
dg-finish