# Copyright (C) 2001-2018 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
# <http://www.gnu.org/licenses/>.

load_lib target-libpath.exp

load_lib wrapper.exp

load_lib target-utils.exp

#
# ${tool}_check_compile -- Reports and returns pass/fail for a compilation
#

proc ${tool}_check_compile {testcase option objname gcc_output} {
    global tool
    set fatal_signal "*cc: Internal compiler error: program*got fatal signal"
 
    if [string match "$fatal_signal 6" $gcc_output] then {
	${tool}_fail $testcase "Got Signal 6, $option"
	return 0
    }

    if [string match "$fatal_signal 11" $gcc_output] then {
	${tool}_fail $testcase "Got Signal 11, $option"
	return 0
    }

    if [string match "*internal compiler error*" $gcc_output] then {
	${tool}_fail $testcase "$option (internal compiler error)"
	return 0
    }

    # We shouldn't get these because of -w, but just in case.
    if [string match "*cc:*warning:*" $gcc_output] then {
	warning "$testcase: (with warnings) $option"
	send_log "$gcc_output\n"
	unresolved "$testcase, $option"
	return 0
    }

    set gcc_output [prune_warnings $gcc_output]

    if { [info proc ${tool}-dg-prune] != "" } {
	global target_triplet
	set gcc_output [${tool}-dg-prune $target_triplet $gcc_output]
	if [string match "*::unsupported::*" $gcc_output] then {
	    regsub -- "::unsupported::" $gcc_output "" gcc_output
	    unsupported "$testcase: $gcc_output"
	    return 0
	}
    } else {
	set unsupported_message [${tool}_check_unsupported_p $gcc_output]
	if { $unsupported_message != "" } {
	    unsupported "$testcase: $unsupported_message"
	    return 0
	}
    }

    # remove any leftover LF/CR to make sure any output is legit
    regsub -all -- "\[\r\n\]*" $gcc_output "" gcc_output

    # If any message remains, we fail.
    if ![string match "" $gcc_output] then {
	${tool}_fail $testcase $option
	return 0
    }

    # fail if the desired object file doesn't exist.
    # FIXME: there's no way of checking for existence on a remote host.
    if {$objname != "" && ![is3way] && ![file exists $objname]} {
	${tool}_fail $testcase $option
	return 0
    }

    ${tool}_pass $testcase $option
    return 1
}

#
# ${tool}_pass -- utility to record a testcase passed
#

proc ${tool}_pass { testcase cflags } {
    if { "$cflags" == "" } {
	pass "$testcase"
    } else {
	pass "$testcase, $cflags"
    }
}

#
# ${tool}_fail -- utility to record a testcase failed
#

proc ${tool}_fail { testcase cflags } {
    if { "$cflags" == "" } {
	fail "$testcase"
    } else {
	fail "$testcase, $cflags"
    }
}

#
# ${tool}_finish -- called at the end of every script that calls ${tool}_init
#
# Hide all quirks of the testing environment from the testsuites.  Also
# undo anything that ${tool}_init did that needs undoing.
#

proc ${tool}_finish { } {
    # The testing harness apparently requires this.
    global errorInfo

    if [info exists errorInfo] then {
	unset errorInfo
    }

    # Might as well reset these (keeps our caller from wondering whether
    # s/he has to or not).
    global prms_id bug_id
    set prms_id 0
    set bug_id 0
}

#
# ${tool}_exit -- Does final cleanup when testing is complete
#

proc ${tool}_exit { } {
    global gluefile

    if [info exists gluefile] {
	file_on_build delete $gluefile
	unset gluefile
    }
}

#
# runtest_file_p -- Provide a definition for older dejagnu releases
# 		    and assume the old syntax: foo1.exp bar1.c foo2.exp bar2.c.
# 		    (delete after next dejagnu release).
#

if { [info procs runtest_file_p] == "" } then {
    proc runtest_file_p { runtests testcase } {
	if { $runtests != "" && [regexp "\[.\]\[cC\]" $runtests] } then {
	    if { [lsearch $runtests [file tail $testcase]] >= 0 } then {
		return 1
	    } else {
		return 0
	    }
	}
	return 1
    }
}

if { [info exists env(GCC_RUNTEST_PARALLELIZE_DIR)] \
     && [info procs runtest_file_p] != [list] \
     && [info procs gcc_parallelize_saved_runtest_file_p] == [list] } then {
    global gcc_runtest_parallelize_counter
    global gcc_runtest_parallelize_counter_minor
    global gcc_runtest_parallelize_enable
    global gcc_runtest_parallelize_dir
    global gcc_runtest_parallelize_last

    set gcc_runtest_parallelize_counter 0
    set gcc_runtest_parallelize_counter_minor 0
    set gcc_runtest_parallelize_enable 1
    set gcc_runtest_parallelize_dir [getenv GCC_RUNTEST_PARALLELIZE_DIR]
    set gcc_runtest_parallelize_last 0

    proc gcc_parallel_test_run_p { testcase } {
	global gcc_runtest_parallelize_counter
	global gcc_runtest_parallelize_counter_minor
	global gcc_runtest_parallelize_enable
	global gcc_runtest_parallelize_dir
	global gcc_runtest_parallelize_last

	if { $gcc_runtest_parallelize_enable == 0 } {
	    return 1
	}

	# Only test the filesystem every 10th iteration
	incr gcc_runtest_parallelize_counter_minor
	if { $gcc_runtest_parallelize_counter_minor == 10 } {
	    set gcc_runtest_parallelize_counter_minor 0
	}
	if { $gcc_runtest_parallelize_counter_minor != 1 } {
	    #verbose -log "gcc_parallel_test_run_p $testcase $gcc_runtest_parallelize_counter $gcc_runtest_parallelize_last"
	    return $gcc_runtest_parallelize_last
	}

	set path $gcc_runtest_parallelize_dir/$gcc_runtest_parallelize_counter

	if {![catch {open $path {RDWR CREAT EXCL} 0600} fd]} {
	    close $fd
	    set gcc_runtest_parallelize_last 1
	    #verbose -log "gcc_parallel_test_run_p $testcase $gcc_runtest_parallelize_counter 1"
	    incr gcc_runtest_parallelize_counter
	    return 1
	}
	set gcc_runtest_parallelize_last 0
	#verbose -log "gcc_parallel_test_run_p $testcase $gcc_runtest_parallelize_counter 0"
	incr gcc_runtest_parallelize_counter
	return 0
    }

    proc gcc_parallel_test_enable { val } {
	global gcc_runtest_parallelize_enable
	set gcc_runtest_parallelize_enable $val
    }

    rename runtest_file_p gcc_parallelize_saved_runtest_file_p
    proc runtest_file_p { runtests testcase } {
	if ![gcc_parallelize_saved_runtest_file_p $runtests $testcase] {
	    return 0
	}
	return [gcc_parallel_test_run_p $testcase]
    }

} else {

    proc gcc_parallel_test_run_p { testcase } {
	return 1
    }

    proc gcc_parallel_test_enable { val } {
    }

}

# Like dg-options, but adds to the default options rather than replacing them.

proc dg-additional-options { args } {
    upvar dg-extra-tool-flags extra-tool-flags

    if { [llength $args] > 3 } {
	error "[lindex $args 0]: too many arguments"
	return
    }

    if { [llength $args] >= 3 } {
	switch [dg-process-target [lindex $args 2]] {
	    "S" { eval lappend extra-tool-flags [lindex $args 1] }
	    "N" { }
	    "F" { error "[lindex $args 0]: `xfail' not allowed here" }
	    "P" { error "[lindex $args 0]: `xfail' not allowed here" }
	}
    } else {
	eval lappend extra-tool-flags [lindex $args 1]
    }
}

# Record additional sources files that must be compiled along with the
# main source file.

set additional_sources ""
set additional_sources_used ""

proc dg-additional-sources { args } {
    global additional_sources
    set additional_sources [lindex $args 1]
}

# Record additional files -- other than source files -- that must be
# present on the system where the compiler runs.

set additional_files ""

proc dg-additional-files { args } {
    global additional_files
    set additional_files [lindex $args 1]
}

# Return an updated version of OPTIONS that mentions any additional
# source files registered with dg-additional-sources.  SOURCE is the
# name of the test case.

proc dg-additional-files-options { options source } {
    global additional_sources
    global additional_sources_used
    global additional_files
    set to_download [list]
    if { $additional_sources != "" } then {
	if [is_remote host] {
	    lappend options "additional_flags=$additional_sources"
	}
	regsub -all "^| " $additional_sources " [file dirname $source]/" additional_sources
	if ![is_remote host] {
	    lappend options "additional_flags=$additional_sources"
	}
	set to_download [concat $to_download $additional_sources]
	set additional_sources_used "$additional_sources"
	set additional_sources ""
    }
    if { $additional_files != "" } then { 
	regsub -all "^| " $additional_files " [file dirname $source]/" additional_files
	set to_download [concat $to_download $additional_files]
	set additional_files ""
    }
    if [is_remote host] {
	foreach file $to_download {
	    remote_download host $file
	}
    }

    return $options
}

# Return a colon-separate list of directories to search for libraries
# for COMPILER, including multilib directories.

proc gcc-set-multilib-library-path { compiler } {
    global rootme

    # ??? rootme will not be set when testing an installed compiler.
    # In that case, we should perhaps use some other method to find
    # libraries.
    if {![info exists rootme]} {
	return ""
    }

    set libpath ":${rootme}"
    set options [lrange $compiler 1 end]
    set compiler [lindex $compiler 0]
    if { [is_remote host] == 0 && [which $compiler] != 0 } {
	foreach i "[eval exec $compiler $options --print-multi-lib]" {
	    set mldir ""
	    regexp -- "\[a-z0-9=_/\.-\]*;" $i mldir
	    set mldir [string trimright $mldir "\;@"]
	    if { "$mldir" == "." } {
		continue
	    }
	    if { [llength [glob -nocomplain ${rootme}/${mldir}/libgcc_s*.so.*]] >= 1 } {
		append libpath ":${rootme}/${mldir}"
	    }
	}
    }

    return $libpath
}

# A list of all uses of dg-regexp, each entry of the form:
#   line-number regexp
# This is cleared at the end of each test by gcc-dg.exp's wrapper for dg-test.
set freeform_regexps []

# Directive for looking for a regexp, without any line numbers or other
# prefixes.

proc dg-regexp { args } {
    verbose "dg-regexp: args: $args" 2

    global freeform_regexps
    lappend freeform_regexps $args
}

# Hook to be called by prune.exp's prune_gcc_output to
# look for the expected dg-regexp expressions, pruning them,
# reporting PASS for those that are found, and FAIL for
# those that weren't found.
#
# It returns a pruned version of its output.

proc handle-dg-regexps { text } {
    global freeform_regexps
    global testname_with_flags

    foreach entry $freeform_regexps {
	verbose "  entry: $entry" 3

	set linenum [lindex $entry 0]
	set rexp [lindex $entry 1]

	# Escape newlines in $rexp so that we can print them in
	# pass/fail results.
	set escaped_regex [string map {"\n" "\\n"} $rexp]
	verbose "escaped_regex: ${escaped_regex}" 4

	set title "$testname_with_flags dg-regexp $linenum"

	# Use "regsub" to attempt to prune the pattern from $text
	if {[regsub -line $rexp $text "" text]} {
	    # Success; the multiline pattern was pruned.
	    pass "$title was found: \"$escaped_regex\""
	} else {
	    fail "$title not found: \"$escaped_regex\""
	}
    }

    return $text
}