# Copyright (C) 2015-2021 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 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 the right target.
if { ![istarget msp430-*-*] } then {
    return
}

# Below are msp430-specific effective target keywords, required for checking
# device related warnings/errors
proc check_effective_target_msp430_430_selected { } {
    return [check-flags [list "" { *-*-* } { "-mcpu=msp430" } { "" } ]]
}

proc check_effective_target_msp430_430x_selected { } {
    return [check-flags [list "" { *-*-* } \
    { "-mcpu=msp430x" "-mcpu=msp430xv2" } { "" } ]]
}

proc check_effective_target_msp430_mlarge_selected { } {
    return [check-flags [list "" { *-*-* } { "-mlarge" } { "" } ]]
}

proc check_effective_target_msp430_region_not_lower { } {
    return [check-flags [list "" { *-*-* } { "-mdata-region=none" "-mdata-region=upper" "-mdata-region=either" } { "" } ]]
}

proc check_effective_target_msp430_region_lower { } {
    return [check-flags [list "" { *-*-* } { "*" } { "-mdata-region=none" "-mdata-region=upper" "-mdata-region=either" } ]]
}

proc check_effective_target_msp430_hwmul_not_none { } {
    return [check-flags [list "" { *-*-* } \
    { "-mhwmult=16bit" "-mhwmult=32bit" "-mhwmult=f5series" } { "" } ]]
}

proc check_effective_target_msp430_hwmul_not_16bit { } {
    return [check-flags [list "" { *-*-* } \
    { "-mhwmult=f5series" "-mhwmult=32bit" } { "" } ]]
}

proc check_effective_target_msp430_hwmul_not_32bit { } {
    return [check-flags [list "" { *-*-* } \
    { "-mhwmult=16bit" "-mhwmult=f5series" } { "" } ]]
}

proc check_effective_target_msp430_hwmul_not_f5 { } {
    return [check-flags [list "" { *-*-* } \
    { "-mhwmult=16bit" "-mhwmult=32bit" } { "" } ]]
}

# Return a list of msp430-specific options we can run the test with.
# The mcu name is extracted from the file name, not from the -mmcu option
# specified in the test file.
proc msp430_get_opts { test_file } {
    global board_info
    # If the mcu name is not recognized, run the test as normal without
    # additional options.
    if { ![regexp {[a-z0-9]+430[a-z0-9_]+(?=\.c)} $test_file mcu_name] } {
	return { "" }
    }
    # If the testsuite has been invoked with specific MSP430 options, don't run
    # in this torture style.
    set multi_flags [board_info [target_info name] multilib_flags]
    if { [string match "*mlarge*" $multi_flags]
	|| [string match "*msmall*" $multi_flags]
	|| [string match "*mcpu*" $multi_flags]
	|| [string match "*mmcu*" $multi_flags]
	|| [string match "*mhwmult*" $multi_flags] } {
	return { "" }
    }
    # Test all device related options. The compiler will warn about
    # incompatibilities, so ensure dg-warning or dg-error directives are set up
    # in the test sources.
    return {"" -mhwmult=none -mhwmult=16bit -mhwmult=32bit -mhwmult=f5series \
        -mcpu=msp430 -mcpu=msp430x -mcpu=msp430xv2 -mlarge}
}

# Run each test file in 'tests' with every possible value for -mcpu and
# -mhwmult, and with -mlarge.
proc msp430_device_permutations_runtest { tests } {
    # The specific tests being run
    global runtests
    global MSP430_DEFAULT_CFLAGS
    foreach { test_file } $tests {
	if { ![runtest_file_p $runtests $test_file] } {
	    continue
	}
	# The device name passed to -mmcu in the csv-using-* tests do not exist
	# in the hard-coded data, to ensure the test fails if the method can't
	# find the device data.
	if { [file tail $test_file] eq "csv-using-installed.c" } {
	    msp430_test_installed_device_data $test_file $MSP430_DEFAULT_CFLAGS
	    continue
	} elseif { [file tail $test_file] eq "csv-using-option.c" } {
	    dg-runtest $test_file \
		"-mdevices-csv-loc=[file dirname $test_file]/devices.csv" \
		"$MSP430_DEFAULT_CFLAGS"
	    continue
	} elseif { [file tail $test_file] eq "csv-using-env-var.c" } {
	    setenv MSP430_GCC_INCLUDE_DIR [file dirname $test_file]
	    verbose -log "MSP430_GCC_INCLUDE_DIR=[file dirname $test_file]"
	    dg-runtest $test_file "" "$MSP430_DEFAULT_CFLAGS"
	    setenv MSP430_GCC_INCLUDE_DIR ""
	    verbose -log "MSP430_GCC_INCLUDE_DIR=\"\""
	    continue
	}
	foreach { mcu_flags } [msp430_get_opts $test_file] {
	    if { [string match "csv-*" [file tail $test_file]] } {
		# Specify the path to devices.csv for devices/csv-* tests with -I.
		# Note that the csv-* tests do not have dg-options directives,
		# they only have dg-additional-options to pass -mmcu.  This is
		# so we can set the path to devices.csv as a "default" flag
		# with -I, and the path won't show up in the test results
		# summary.  If there were dg-options directives, then these
		# default flags passed as the 3rd argument to dg-runtest would
		# not be used.
		dg-runtest $test_file "$mcu_flags" "-I[file dirname $test_file] $MSP430_DEFAULT_CFLAGS"
	    } elseif { [string match "bad-devices*" [file tail $test_file]] } {
		dg-runtest $test_file "$mcu_flags" "-mdevices-csv-loc=[file dirname $test_file]/[file tail $test_file]sv $MSP430_DEFAULT_CFLAGS"
	    } else {
		dg-runtest $test_file "$mcu_flags -DTESTING_HARD_DATA" "$MSP430_DEFAULT_CFLAGS"
	    }
        }
    }
}


# Return $TOOLCHAIN_ROOT/$target_alias/include/devices/
# target_alias is expected to be either msp430-elf or msp430-elfbare.
proc get_installed_device_data_path { } {
    global target_alias
    set compiler [lindex [regexp -all -inline {\S+} \
	[board_info [target_info name] compiler]] 0]
    # $compiler is actually a file, but normalize will still get us the desired
    # result.
    return [file normalize \
	"$compiler/../../$target_alias/include/devices/devices.csv"]
}

# If the devices.csv is installed in
# $TOOLCHAIN_ROOT/$target_alias/include/devices/, rename it so it doesn't
# interfere with the hard-coded device data tests.
proc msp430_hide_installed_devices_data { } {
    set devices_path [get_installed_device_data_path]
    if { [file exists $devices_path] } {
	file rename $devices_path "$devices_path.bak"
    }
}

# Restore devices.csv if renamed by msp430_hide_installed_devices_data.
proc msp430_restore_installed_devices_data { } {
    set devices_path [get_installed_device_data_path]
    if { [file exists "$devices_path.bak"] } {
	file rename "$devices_path.bak" $devices_path 
    }
}

proc msp430_test_installed_device_data { name default_cflags } {
    global subdir
    global env

    # The initial value for GCC_EXEC_PREFIX set by target-libpath.exp is not
    # correct for cross-compilers so fix it here. GCC fixes the value itself,
    # but not after spec functions are executed, which can cause a warning
    # about missing devices.csv to be emitted.
    set compiler [lindex [regexp -all -inline {\S+} \
	[board_info [target_info name] compiler]] 0]
    set real_exec_prefix "[file normalize "$compiler/../../lib/gcc"]/"
    setenv GCC_EXEC_PREFIX $real_exec_prefix

    msp430_restore_installed_devices_data 
    set devices_path [get_installed_device_data_path]
    if { [file exists $devices_path] } {
	dg-runtest $name "" "$default_cflags"
    } else {
	set shorter_name "$subdir/[file tail $name]"
	verbose -log "$shorter_name not supported, $devices_path doesn't exist."
	unsupported $shorter_name
    }
    msp430_hide_installed_devices_data 
}

proc msp430_install_device_data { testsuite_dir } {
    set devices_path [get_installed_device_data_path]
    if { [file exists $devices_path] } {
        return
    }
    set installed_path [file dirname $devices_path]
    file mkdir $installed_path
    file copy $testsuite_dir/msp430-devices.h $testsuite_dir/devices.csv $installed_path
}

# Load support procs.
load_lib gcc-dg.exp

# The '-pedantic-errors' option in the global variable DEFAULT_CFLAGS that is
# set by other drivers causes an error when the __int20 type is used, so remove
# this option from DEFAULT_CFLAGS for the msp430 tests.
global DEFAULT_CFLAGS
if [info exists DEFAULT_CFLAGS] then {
    set MSP430_DEFAULT_CFLAGS \
      [ string map { "-pedantic-errors" "" } $DEFAULT_CFLAGS ]
} else {
   set MSP430_DEFAULT_CFLAGS ""
}

# Initialize `dg'.
dg-init

# Install then hide the devices data now, in case it is already installed. We
# don't want it to interfere with tests until we need it to.
msp430_install_device_data $srcdir/$subdir/devices
msp430_hide_installed_devices_data

# Main loop.
dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.\[cCS\]]] \
	"" $MSP430_DEFAULT_CFLAGS

msp430_device_permutations_runtest [lsort [glob -nocomplain $srcdir/$subdir/devices/*.\[cCS\]]]

msp430_restore_installed_devices_data 

# All done.
dg-finish