scanasm.exp

this is a gcc file, you can download it and learn its usetility, for further detail please look at t

#   Copyright (C) 2000, 2002 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  

# Various utilities for scanning assembler output, used by gcc-dg.exp and
# g++-dg.exp.

# Utility for scanning compiler result, invoked via dg-final.
# Call pass if pattern is present, otherwise fail.
proc scan-assembler { args } {
    if { [llength $args] < 1 } {
	error "scan-assembler: too few arguments"
        return
    }
    if { [llength $args] > 2 } {
	error "scan-assembler: too many arguments"
	return
    }
    if { [llength $args] >= 2 } {
	switch [dg-process-target [lindex $args 1]] {
	    "S" { }
	    "N" { return }
	    "F" { setup_xfail "*-*-*" }
	    "P" { }
	}
    }

    # This assumes that we are two frames down from dg-test, and that
    # it still stores the filename of the testcase in a local variable "name".
    # A cleaner solution would require a new dejagnu release.
    upvar 2 name testcase

    # This must match the rule in gcc-dg.exp.
    set output_file "[file rootname [file tail $testcase]].s"

    set fd [open $output_file r]
    set text [read $fd]
    close $fd

    if [regexp -- [lindex $args 0] $text] {
	pass "$testcase scan-assembler [lindex $args 0]"
    } else {
	fail "$testcase scan-assembler [lindex $args 0]"
    }
}

# Call pass if pattern is not present, otherwise fail.
proc scan-assembler-not { args } {
    if { [llength $args] < 1 } {
	error "scan-assembler-not: too few arguments"
        return
    }
    if { [llength $args] > 2 } {
	error "scan-assembler-not: too many arguments"
	return
    }
    if { [llength $args] >= 2 } {
	switch [dg-process-target [lindex $args 1]] {
	    "S" { }
	    "N" { return }
	    "F" { setup_xfail "*-*-*" }
	    "P" { }
	}
    }

    upvar 2 name testcase
    set output_file "[file rootname [file tail $testcase]].s"

    set fd [open $output_file r]
    set text [read $fd]
    close $fd

    if ![regexp -- [lindex $args 0] $text] {
	pass "$testcase scan-assembler-not [lindex $args 0]"
    } else {
	fail "$testcase scan-assembler-not [lindex $args 0]"
    }
}

# Utility for scanning demangled compiler result, invoked via dg-final.
# Call pass if pattern is present, otherwise fail.
proc scan-assembler-dem { args } {
    global cxxfilt
    global base_dir

    if { [llength $args] < 1 } {
	error "scan-assembler-dem: too few arguments"
        return
    }
    if { [llength $args] > 2 } {
	error "scan-assembler-dem: too many arguments"
	return
    }
    if { [llength $args] >= 2 } {
	switch [dg-process-target [lindex $args 1]] {
	    "S" { }
	    "N" { return }
	    "F" { setup_xfail "*-*-*" }
	    "P" { }
	}
    }

    # Find c++filt like we find g++ in g++.exp.
    if ![info exists cxxfilt]  {
	set cxxfilt [findfile $base_dir/../../binutils/cxxfilt \
		     $base_dir/../../binutils/cxxfilt \
	             [findfile $base_dir/../c++filt $base_dir/../c++filt \
		      [findfile $base_dir/c++filt $base_dir/c++filt \
		       [transform c++filt]]]]
	verbose -log "c++filt is $cxxfilt"
    }

    upvar 2 name testcase
    set output_file "[file rootname [file tail $testcase]].s"

    set fd [open "| $cxxfilt < $output_file" r]
    set text [read $fd]
    close $fd

    if [regexp -- [lindex $args 0] $text] {
	pass "$testcase scan-assembler-dem [lindex $args 0]"
    } else {
	fail "$testcase scan-assembler-dem [lindex $args 0]"
    }
}

# Call pass if demangled pattern is not present, otherwise fail.
proc scan-assembler-dem-not { args } {
    global cxxfilt
    global base_dir

    if { [llength $args] < 1 } {
	error "scan-assembler-dem-not: too few arguments"
        return
    }
    if { [llength $args] > 2 } {
	error "scan-assembler-dem-not: too many arguments"
	return
    }
    if { [llength $args] >= 2 } {
	switch [dg-process-target [lindex $args 1]] {
	    "S" { }
	    "N" { return }
	    "F" { setup_xfail "*-*-*" }
	    "P" { }
	}
    }

    # Find c++filt like we find g++ in g++.exp.
    if ![info exists cxxfilt]  {
	set cxxfilt [findfile $base_dir/../../binutils/cxxfilt \
		     $base_dir/../../binutils/cxxfilt \
		     [findfile $base_dir/../c++filt $base_dir/../c++filt \
		      [findfile $base_dir/c++filt $base_dir/c++filt \
		       [transform c++filt]]]]
	verbose -log "c++filt is $cxxfilt"
    }

    upvar 2 name testcase
    set output_file "[file rootname [file tail $testcase]].s"

    set fd [open "| $cxxfilt < $output_file" r]
    set text [read $fd]
    close $fd

    if ![regexp -- [lindex $args 0] $text] {
	pass "$testcase scan-assembler-dem-not [lindex $args 0]"
    } else {
	fail "$testcase scan-assembler-dem-not [lindex $args 0]"
    }
}