ld-lib.exp

GNU binutils是GNU交叉工具链中的一个源码包

    if { [istarget *-*-*\[ab\]out*] \
	     || [istarget *-*-linux*oldld*] \
	     || [istarget *-*-msdos*] \
	     || [istarget arm-*-netbsd] \
	     || [istarget i?86-*-netbsd] \
	     || [istarget i?86-*-mach*] \
	     || [istarget i?86-*-vsta] \
	     || [istarget pdp11-*-*] \
	     || [istarget m68*-ericsson-ose] \
	     || [istarget m68k-hp-bsd*] \
	     || [istarget m68*-*-hpux*] \
	     || [istarget m68*-*-netbsd] \
	     || [istarget m68*-*-netbsd*4k*] \
	     || [istarget m68k-sony-*] \
	     || [istarget m68*-sun-sunos\[34\]*] \
	     || [istarget m68*-wrs-vxworks*] \
	     || [istarget ns32k-*-*] \
	     || [istarget sparc*-*-netbsd] \
	     || [istarget sparc-sun-sunos4*] \
	     || [istarget vax-dec-ultrix*] \
	     || [istarget vax-*-netbsd] } {
	return 1
    }
    return 0
}

#
# is_pecoff_format
#	true if the object format is known to be PECOFF
#
proc is_pecoff_format {} {
    if { ![istarget *-*-mingw32*] \
	 && ![istarget *-*-cygwin*] \
	 && ![istarget *-*-pe*] } {
	return 0
    }

    return 1
}

#
# simple_diff
#	compares two files line-by-line
#	returns differences if exist
#	returns null if file(s) cannot be opened
#
proc simple_diff { file_1 file_2 } {
    global target

    set eof -1
    set differences 0

    if [file exists $file_1] then {
	set file_a [open $file_1 r]
    } else {
	warning "$file_1 doesn't exist"
	return
    }

    if [file exists $file_2] then {
	set file_b [open $file_2 r]
    } else {
	fail "$file_2 doesn't exist"
	return
    }

    verbose "# Diff'ing: $file_1 $file_2\n" 2

    while { [gets $file_a line] != $eof } {
	if [regexp "^#.*$" $line] then {
	    continue
	} else {
	    lappend list_a $line
	}
    }
    close $file_a

    while { [gets $file_b line] != $eof } {
	if [regexp "^#.*$" $line] then {
	    continue
	} else {
	    lappend list_b $line
	}
    }
    close $file_b

    for { set i 0 } { $i < [llength $list_a] } { incr i } {
	set line_a [lindex $list_a $i]
	set line_b [lindex $list_b $i]

	verbose "\t$file_1: $i: $line_a\n" 3
	verbose "\t$file_2: $i: $line_b\n" 3
	if [string compare $line_a $line_b] then {
	    verbose -log "\t$file_1: $i: $line_a\n"
	    verbose -log "\t$file_2: $i: $line_b\n"

	    fail "Test: $target"
	    return
	}
    }

    if { [llength $list_a] != [llength $list_b] } {
	fail "Test: $target"
	return
    }

    if $differences<1 then {
	pass "Test: $target"
    }
}

# run_dump_test FILE
# Copied from gas testsuite, tweaked and further extended.
#
# Assemble a .s file, then run some utility on it and check the output.
#
# There should be an assembly language file named FILE.s in the test
# suite directory, and a pattern file called FILE.d.  `run_dump_test'
# will assemble FILE.s, run some tool like `objdump', `objcopy', or
# `nm' on the .o file to produce textual output, and then analyze that
# with regexps.  The FILE.d file specifies what program to run, and
# what to expect in its output.
#
# The FILE.d file begins with zero or more option lines, which specify
# flags to pass to the assembler, the program to run to dump the
# assembler's output, and the options it wants.  The option lines have
# the syntax:
#
#         # OPTION: VALUE
#
# OPTION is the name of some option, like "name" or "objdump", and
# VALUE is OPTION's value.  The valid options are described below.
# Whitespace is ignored everywhere, except within VALUE.  The option
# list ends with the first line that doesn't match the above syntax
# (hmm, not great for error detection).
#
# The interesting options are:
#
#   name: TEST-NAME
#	The name of this test, passed to DejaGNU's `pass' and `fail'
#       commands.  If omitted, this defaults to FILE, the root of the
#       .s and .d files' names.
#
#   as: FLAGS
#	When assembling, pass FLAGS to the assembler.
#       If assembling several files, you can pass different assembler
#       options in the "source" directives.  See below.
#
#   ld: FLAGS
#       Link assembled files using FLAGS, in the order of the "source"
#       directives, when using multiple files.
#
#   objcopy_linked_file: FLAGS
#	Run objcopy on the linked file with the specified flags.
#	This lets you transform the linked file using objcopy, before the
#	result is analyzed by an analyzer program specified below (which
#	may in turn *also* be objcopy).
#
#   PROG: PROGRAM-NAME
#       The name of the program to run to analyze the .o file produced
#       by the assembler or the linker output.  This can be omitted;
#       run_dump_test will guess which program to run by seeing which of
#       the flags options below is present.
#
#   objdump: FLAGS
#   nm: FLAGS
#   objcopy: FLAGS
#	Use the specified program to analyze the assembler or linker
#       output file, and pass it FLAGS, in addition to the output name.
#	Note that they are run with LC_ALL=C in the environment to give
#	consistent sorting of symbols.
#
#   source: SOURCE [FLAGS]
#	Assemble the file SOURCE.s using the flags in the "as" directive
#       and the (optional) FLAGS.  If omitted, the source defaults to
#       FILE.s.
#       This is useful if several .d files want to share a .s file.
#       More than one "source" directive can be given, which is useful
#       when testing linking.
#
#   xfail: TARGET
#       The test is expected to fail on TARGET.  This may occur more than
#       once.
#
#   target: TARGET
#       Only run the test for TARGET.  This may occur more than once; the
#       target being tested must match at least one.
#
#   notarget: TARGET
#       Do not run the test for TARGET.  This may occur more than once;
#       the target being tested must not match any of them.
#
#   error: REGEX
#	An error with message matching REGEX must be emitted for the test
#	to pass.  The PROG, objdump, nm and objcopy options have no
#	meaning and need not supplied if this is present.
#
#   warning: REGEX
#	Expect a linker warning matching REGEX.  It is an error to issue
#	both "error" and "warning".
#
# Each option may occur at most once unless otherwise mentioned.
#
# After the option lines come regexp lines.  `run_dump_test' calls
# `regexp_diff' to compare the output of the dumping tool against the
# regexps in FILE.d.  `regexp_diff' is defined later in this file; see
# further comments there.

proc run_dump_test { name } {
    global subdir srcdir
    global OBJDUMP NM AS OBJCOPY READELF LD
    global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS LDFLAGS
    global host_triplet runtests
    global env

    if [string match "*/*" $name] {
	set file $name
	set name [file tail $name]
    } else {
	set file "$srcdir/$subdir/$name"
    }

    if ![runtest_file_p $runtests $name] then {
	return
    }

    set opt_array [slurp_options "${file}.d"]
    if { $opt_array == -1 } {
	perror "error reading options from $file.d"
	unresolved $subdir/$name
	return
    }
    set dumpfile tmpdir/dump.out
    set run_ld 0
    set run_objcopy 0
    set opts(as) {}
    set opts(ld) {}
    set opts(xfail) {}
    set opts(target) {}
    set opts(notarget) {}
    set opts(objdump) {}
    set opts(nm) {}
    set opts(objcopy) {}
    set opts(readelf) {}
    set opts(name) {}
    set opts(PROG) {}
    set opts(source) {}
    set opts(error) {}
    set opts(warning) {}
    set opts(objcopy_linked_file) {}
    set asflags(${file}.s) {}

    foreach i $opt_array {
	set opt_name [lindex $i 0]
	set opt_val [lindex $i 1]
	if ![info exists opts($opt_name)] {
	    perror "unknown option $opt_name in file $file.d"
	    unresolved $subdir/$name
	    return
	}

	switch -- $opt_name {
	    xfail {}
	    target {}
	    notarget {}
	    source {
		# Move any source-specific as-flags to a separate array to
		# simplify processing.
		if { [llength $opt_val] > 1 } {
		    set asflags([lindex $opt_val 0]) [lrange $opt_val 1 end]
		    set opt_val [lindex $opt_val 0]
		} else {
		    set asflags($opt_val) {}
		}
	    }
	    default {
		if [string length $opts($opt_name)] {
		    perror "option $opt_name multiply set in $file.d"
		    unresolved $subdir/$name
		    return
		}

		# A single "# ld:" with no options should do the right thing.
		if { $opt_name == "ld" } {
		    set run_ld 1
		}
		# Likewise objcopy_linked_file.
		if { $opt_name == "objcopy_linked_file" } {
		    set run_objcopy 1
		}
	    }
	}
	set opts($opt_name) [concat $opts($opt_name) $opt_val]
    }

    # Decide early whether we should run the test for this target.
    if { [llength $opts(target)] > 0 } {
	set targmatch 0
	foreach targ $opts(target) {
	    if [istarget $targ] {
		set targmatch 1
		break
	    }
	}
	if { $targmatch == 0 } {
	    return
	}
    }
    foreach targ $opts(notarget) {
	if [istarget $targ] {
	    return
	}
    }

    set program ""
    # It's meaningless to require an output-testing method when we
    # expect an error.
    if { $opts(error) == "" } {
	if {$opts(PROG) != ""} {
	    switch -- $opts(PROG) {
		objdump	{ set program objdump }
		nm	{ set program nm }
		objcopy	{ set program objcopy }
		readelf	{ set program readelf }
		default
		{ perror "unrecognized program option $opts(PROG) in $file.d"
		  unresolved $subdir/$name
		  return }
	    }
	} else {
	# Guess which program to run, by seeing which option was specified.
	    foreach p {objdump objcopy nm readelf} {
		if {$opts($p) != ""} {
		    if {$program != ""} {
			perror "ambiguous dump program in $file.d"
			unresolved $subdir/$name
			return
		    } else {
			set program $p
		    }
		}
	    }
	}
	if { $program == "" && $opts(warning) == "" } {
	    perror "dump program unspecified in $file.d"
	    unresolved $subdir/$name
	    return
	}
    }

    if { $opts(name) == "" } {
	set testname "$subdir/$name"
    } else {
	set testname $opts(name)
    }

    if { $opts(source) == "" } {
	set sourcefiles [list ${file}.s]
    } else {
	set sourcefiles {}
	foreach sf $opts(source) {
	    if { [string match "/*" $sf] } {
		lappend sourcefiles "$sf"
	    } else {
		lappend sourcefiles "$srcdir/$subdir/$sf"
	    }
	    # Must have asflags indexed on source name.
	    set asflags($srcdir/$subdir/$sf) $asflags($sf)
	}
    }

    # Time to setup xfailures.
    foreach targ $opts(xfail) {
	setup_xfail $targ
    }

    # Assemble each file.
    set objfiles {}
    for { set i 0 } { $i < [llength $sourcefiles] } { incr i } {
	set sourcefile [lindex $sourcefiles $i]

	set objfile "tmpdir/dump$i.o"
	lappend objfiles $objfile
	set cmd "$AS $ASFLAGS $opts(as) $asflags($sourcefile) -o $objfile $sourcefile"

	send_log "$cmd\n"
	set cmdret [catch "exec $cmd" comp_output]
	set comp_output [prune_warnings $comp_output]

	if { $cmdret != 0 || ![string match "" $comp_output] } then {
	    send_log "$comp_output\n"
	    verbose "$comp_output" 3

	    set exitstat "succeeded"
	    if { $cmdret != 0 } { set exitstat "failed" }
	    verbose -log "$exitstat with: <$comp_output>"
	    fail $testname
	    return
	}
    }

    set expmsg $opts(error)
    if { $opts(warning) != "" } {
	if { $expmsg != "" } {
	    perror "$testname: mixing error and warning test-directives"
	    return
	}
	set expmsg $opts(warning)
    }

    # Perhaps link the file(s).
    if { $run_ld } {
	set objfile "tmpdir/dump"

	# Add -L$srcdir/$subdir so that the linker command can use
	# linker scripts in the source directory.
	set cmd "$LD $LDFLAGS -L$srcdir/$subdir \
		   $opts(ld) -o $objfile $objfiles"

	send_log "$cmd\n"
	set cmdret [catch "exec $cmd" comp_output]
	set comp_output [prune_warnings $comp_output]