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newlib-cygwin
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* speclib: Semi-revert to previous version but don't try to generate 

well-formed import library.  Instead, just extract appropriate symbols and let
later libcygwin.a on link line fill in the rest of the import stuff.
* gendef: Hopefully no-op modification to allow easier post-processing on
symbol values.
This commit is contained in:
Christopher Faylor 2009-04-09 21:02:53 +00:00
parent 0c4023011d
commit 59328e28c4
4 changed files with 64 additions and 52 deletions
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9
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,12 @@
2009-04-09 Christopher Faylor <me+cygwin@cgf.cx>
* speclib: Semi-revert to previous version but don't try to generate
well-formed import library. Instead, just extract appropriate symbols
and let later libcygwin.a on link line fill in the rest of the import
stuff.
* gendef: Hopefully no-op modification to allow easier post-processing
on symbol values.
2009-04-09 Corinna Vinschen <corinna@vinschen.de>
* syscalls.cc (try_to_bin): Use tmp_pathbuf buffer to allocate infobuf

14
winsup/cygwin/Makefile.in
View File

@ -105,7 +105,7 @@ LIBGMON_A:=libgmon.a
CYGWIN_START:=crt0.o
GMON_START:=gcrt0.o
speclib=${word 1, $^} "${NM}" "$(DLLTOOL)" $(wordlist 2, $(words $^), $^)
speclib=${word 1, $^} "${NM}" "${AR}" $(wordlist 2, $(words $^), $^)
# Some things want these from libc, but they have their own static
# data which apps can get to, which is a pain in the dll, so we
@ -442,22 +442,22 @@ shared.o: shared_info_magic.h
$(srcdir)/devices.cc: gendevices devices.in devices.h
${wordlist 1,2,$^} $@
${CURDIR}/libc.a: speclib ${DEF_FILE} ./libm.a libpthread.a libutil.a
${CURDIR}/libc.a: speclib ${LIB_NAME} ./libm.a libpthread.a libutil.a
${speclib} -v ${@F}
${CURDIR}/libm.a: speclib ${DEF_FILE} $(LIBM)
${CURDIR}/libm.a: speclib ${LIB_NAME} $(LIBM)
${speclib} ${@F}
libpthread.a: speclib ${DEF_FILE} pthread.o thread.o
libpthread.a: speclib ${LIB_NAME} pthread.o thread.o
${speclib} ${@F}
libutil.a: speclib ${DEF_FILE} bsdlib.o
libutil.a: speclib ${LIB_NAME} bsdlib.o
${speclib} ${@F}
libdl.a: speclib ${DEF_FILE} dlfcn.o
libdl.a: speclib ${LIB_NAME} dlfcn.o
${speclib} ${@F}
libresolv.a: speclib ${DEF_FILE} minires.o
libresolv.a: speclib ${LIB_NAME} minires.o
${speclib} ${@F}
${EXTRALIBS}: lib%.a: %.o

18
winsup/cygwin/gendef
View File

@ -34,13 +34,13 @@ close(IN);
my %sigfe = ();
my @data = ();
my @nosigfuncs = ();
my @out = ();
my @text = ();
for (@in) {
/\sDATA$/o and do {
push(@data, $_);
chomp;
s/\sDATA$//o and do {
push @data, $_;
next;
};
chomp;
if (/=/o) {
if (s/\s+NOSIGFE\s*$//) {
# nothing
@ -63,16 +63,18 @@ for (@in) {
s/(\S)\s+(\S)/$1 $2/go;
s/(\S)\s+$/$1/o;
s/^\s+(\S)/$1/o;
push(@out, $_ . "\n");
push @text, $_;
}
for (@out) {
for (@text) {
my ($alias, $func) = /^(\S+) = (\S+)\s*$/o;
$_ = $alias . ' = ' . $sigfe{$func} . "\n"
$_ = $alias . ' = ' . $sigfe{$func}
if defined($func) && $sigfe{$func};
}
open(OUT, '>', $out) or die "$0: couldn't open \"$out\" - $!\n";
print OUT @top, @data, @out;
push @top, (map {$_ . " DATA\n"} @data), (map {$_ . "\n"} @text);
print OUT @top;
close OUT;
open(SIGFE, '>', $sigfe) or die "$0: couldn't open sigfe file \"$sigfe\" - $!\n";

75
winsup/cygwin/speclib
View File

@ -2,51 +2,52 @@
use Getopt::Long;
use File::Temp qw'tempdir';
use File::Basename;
use Cwd;
use strict;
sub dllname($;$);
my $static;
my $exclude;
GetOptions('static!'=>\$static, 'v|exclude!'=>\$exclude);
my $nm = shift;
my $dlltool = shift;
my $def = shift;
my $lib = pop;
my $ar = shift;
my $libdll = Cwd::abs_path(shift @ARGV);
my $lib = Cwd::abs_path(pop @ARGV);
my $inverse;
if ($ARGV[$#ARGV] ne '-v') {
$inverse = 0;
} else {
$inverse = 1;
$#ARGV--;
}
open my $def_fd, '<', $def or die "$0: couldn't open \"$def\" - $!\n";
my %defsyms = ();
my $newdef = '';
while (<$def_fd>) {
if (/^\s*(?:EXPORTS\b|LIBRARY\b|\s*$)/o) {
$newdef .= $_;
} else {
my $sym = (split ' ')[0];
$defsyms{$sym} = $_;
}
}
close $def_fd;
open my $nm_fd, '-|', $nm, '-pg', '--defined-only', @ARGV or
open my $nm_fd, '-|', $nm, '-Ap', '--defined-only', @ARGV, $libdll or
die "$0: execution of $nm for object files failed - $!\n";
my %match_syms = ();
my $symfiles = ();
my $lastfn;
my %extract = ();
while (<$nm_fd>) {
next unless /\S+\s+[A-Z]+\s+_(.*)$/o;
if ($inverse) {
delete $defsyms{$1};
} else {
$newdef .= $defsyms{$1} if exists $defsyms{$1};
}
study;
m%^\Q$libdll\E:([^:]*):\d+ i \.idata\$([56])% and do {
next;
};
m%^\Q$libdll\E:[^:]*:\d+ I (__head_.*)$% and do {
next;
};
next unless m%^([^:]*):([^:]*(?=:))?.* [DTI] (.*)%o;
if ($1 ne $libdll) {
$match_syms{$3} = 1;
} elsif ($match_syms{$3} ? !$exclude : $exclude) {
$extract{$2} = 1;
}
}
close $nm_fd;
$newdef .= join '', sort values %defsyms if $inverse;
%extract or die "$0: couldn't find symbols for $lib\n";
open my $dlltool_fd, '|-', $dlltool, '-d', '/proc/self/fd/0', '-D', 'cygwin1.dll', '-l', $lib or
die "$0: couldn't start dlltool - $dlltool - $!\n";
print $dlltool_fd $newdef;
close $dlltool_fd or exit 1;
exit 0;
my $dir = tempdir(CLEANUP => 1);
chdir $dir;
# print join(' ', '+', $ar, 'x', sort keys %extract), "\n";
my $res = system $ar, 'x', $libdll, sort keys %extract;
die "$0: $ar extraction exited with non-zero status\n" if $res;
unlink $lib;
exec $ar, 'crus', $lib, sort keys %extract;