Eliminate use of sigframe and sigthread throughout.

* Makefile.in (DLL_OFILES): Add sigfe.o.  Remove reliance on cygwin.def from
cygwin0.dll dependency since dependence on sigfe.o implies that.  Generate def
file on the fly using 'gendef'.
* configure.in: Don't auto-generate cygwin.def.
* configure: Regenerate.
* cygwin.din: Add SIGFE stuff where appropriate.
* dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup.  Set
_main_tls to address of the main thread's cygwin tls.
* debug.h: Remove now unneeded WFSO and WFMO declarations.
* exceptions.cc (_last_thread): Define.
(set_thread_state_for_signals): New function.
(reset_thread_exception_for_signals): Ditto.
(init_thread_for_signals): Ditto.
(delete_thread_for_signals): Ditto.
(capture_thread_for_signals): Ditto.
(handle_exceptions): Set return address explicitly for exceptions prior to
calling sig_send.
(interrupt_on_return): Eliminate.
(setup_handler): Add preliminary implementation for dealing with
thread-specific signals by querying _main_tls.
(signal_exit): Use cygthread::main_thread_id instead of mainthread.id.
(call_signal_handler_now): For now, just handle the main thread.
* fork.cc (vfork): Save and restore main _my_tls.
* gendef: New file.  Generates def file and sigfe.s file.
* gentls_offsets: New file.  Generates offsets for perl to use in sigfe.s.
* how-signals-work.txt: Mention that info is obsolete.
* init.cc (dll_entry): Initialize cygwin tls storage here.
* miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from
asm.
* perthread.h (vfork_save::tls): New element.
* signal.cc (nanosleep): Replace previous use of
sigframe.call_signal_handler_now with straight call to call_signal_handler_now.
(abort): Ditto.
* syscalls.cc (readv): Ditto.
* termios.cc (tcsetattr): Ditto.
* wait.cc (wait4): Ditto.
* sigproc.cc (sig_dispatch_pending): Ditto.
(sig_send): Ditto.
* sigproc.h: Declare call_signal_handler_now.
* thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls.  Remove
obsolete and unworking signal stuff.
* thread.h (verifyable_object::sigs): Eliminate.
(verifyable_object::sigmask): Eliminate.
(verifyable_object::sigtodo): Eliminate.
(verifyable_object::exit): Make attribute noreturn.
(verifyable_object::thread_init_wrapper): Ditto.
(pthread_null::exit): Ditto.
* winbase.h (__stackbase): Always define.
* winsup.h (low_priority_sleep): Declare as a "C" function.
* include/cygwin/version.h: Bump API version to reflect sigwait export.
* include/sys/queue.h: Protect SLIST_ENTRY from previous declaration.
* signal.cc (sigwait): Implement.
* select.cc (fhandler_base::ready_for_read): Add debugging output.
* devices.h: Define more device pointers via their storage.
* devices.in: Don't parse things like /dev/inet/tcp, as they really have no
meaning.
* devices.cc: Regenerate.
* gendevices: Set proper protection for output file.
* cygtls.h: New file.
* gendef: New file.
* gentls_offsets: New file.
* tlsoffsets.h: New file.  Autogenerated.
* config/i386/longjmp.c: Remove.  File subsumed by gendef output.
* config/i386/makefrag: Remove obsolete file.
* fhandler.cc: Remove spurious access_worker declaration.
* spawn.cc (spawnve): Make debugging output more accurate.
* cygwin-gperf: Remove.
* devices.cc: Remove.

1 files changed, 0 insertions, 153 deletions

diff --git a/winsup/cygwin/cygwin-gperf b/winsup/cygwin/cygwin-gperf
deleted file mode 100755
index 4599e90ca..000000000
--- a/winsup/cygwin/cygwin-gperf
+++ /dev/null
@@ -1,153 +0,0 @@
-#!/usr/bin/perl
-use strict;
-sub read_devices($%);
-my $infile = shift;
-my $incfile = shift;
-open(GPERF, "gperf  -c --key-positions='5-8,1-2,9-10' -r -t -C -E " .
-            "-T -L 'ANSI-C' -Hdevhash -N'device::lookup' -Z devstring " .
-	    "-7 -G $infile |");
-my @lines = <GPERF>;
-my $ix = 0;
-my $i = 0;
-my $n = -1;
-my $findclose = 0;
-my $add_device = '';
-my %fh_static;
-my %fh_declare = (
-    'cygdrive' => 'dev_cygdrive_storage',
-    'fs' => 'dev_fs_storage',
-    'proc' => 'dev_proc_storage',
-    'registry' => 'dev_registry_storage',
-    'process' => 'dev_process_storage',
-    'piper' => 'dev_piper_storage',
-    'pipew' => 'dev_pipew_storage',
-    'tcp' => 'dev_tcp_storage',
-    'udp' => 'dev_udp_storage',
-    'icmp' => 'dev_icmp_storage',
-    'unix' => 'dev_unix_storage',
-    'stream' => 'dev_stream_storage',
-    'dgram' => 'dev_dgram_storage'
-);
-
-foreach (@lines) {
-    $i++;
-    s/\[(str\[[^\]]*\])\]/[(unsigned) cyg_tolower ($1)]/o and next;
-    s/static (.* )wordlist/static NO_COPY $1wordlist/o and do {
-	$findclose = 1;
-    };
-    s/([   ]*)if \(\*str.*$/$1if (strncasematch (str, s, len))/o and next;
-    $findclose and /};/o and do {
-        $_ .= "\n";
-	$_ .=<<'EOF';
-const device dev_cygdrive_storage =
-  {"/cygdrive", FH_CYGDRIVE, "/cygdrive", 0, 0, 0, 0};
-
-const device dev_fs_storage =
-  {"", FH_FS, "", 0, 0, 0, 0};
-
-const device dev_proc_storage =
-  {"", FH_PROC, "", 0, 0, 0, 0};
-
-const device dev_registry_storage =
-  {"", FH_REGISTRY, "", 0, 0, 0, 0};
-
-const device dev_process_storage =
-  {"", FH_PROCESS, "", 0, 0, 0, 0};
-
-const device dev_tcp_storage =
-  {"/dev/inet/tcp", FH_TCP, "", 0, 0, 0, 0};
-
-const device dev_udp_storage =
-  {"/dev/inet/udp", FH_UCP, "", 0, 0, 0, 0};
-
-const device dev_icmp_storage =
-  {"/dev/inet/icmp", FH_ICMP, "", 0, 0, 0, 0};
-
-const device dev_unix_storage =
-  {"/dev/inet/unix", FH_UNIX, "", 0, 0, 0, 0};
-
-const device dev_stream_storage =
-  {"/dev/inet/stream", FH_STREAM, "", 0, 0, 0, 0};
-
-const device dev_dgram_storage =
-  {"/dev/inet/dgram", FH_DGRAM, "", 0, 0, 0, 0};
-
-const device dev_piper_storage =
-  {"", FH_PIPER, "", 0, 0, 0, 0};
-
-const device dev_pipew_storage =
-  {"", FH_PIPEW, "", 0, 0, 0, 0};
-
-const device dev_fs =
-  {"", FH_FS, "", 0, 0, 0, 0};
-EOF
-        for my $f (sort keys %fh_declare) {
-	    $_ .= 'const device dev_' . $f . "_storage = $fh_declare{$f};\n"
-	      if $fh_declare{$f} !~ /_storage/;
-	}
-	$_ .= "\n";
-	$_ .= read_devices($incfile, %fh_declare);
-	$findclose = 0;
-    };
-    /^(\s+)(\{".*)/ or next;
-    my $indent = $1;
-    my $rest = $2;
-    for my $f ($rest =~ /\{([^}]+)\}/g) {
-	$f eq '""' and do {
-	    $ix++;
-	    next;
-	};
-	my ($str, $fh) = (split(/, /, $f))[0..1];
-	if ($str !~ m!^"(?:/dev|:bad:)!) {
-	    $ix++;
-	} else {
-	    my $what = lc(($fh =~ /FH_(.+)/o)[0]);
-	    my $addon = '';
-	    while (defined $fh_static{$what . $addon} &&
-		   $fh_static{$what . $addon} ne $f) {
-		$addon++;
-	    }
-	    $what .= $addon;
-	    $fh_static{$what} = $f;
-	    $fh_declare{$what} = "wordlist[$ix]";
-	    $ix++;
-	}
-    }
-}
-
-print @lines;
-
-sub read_devices($%) {
-    my $fn = shift;
-    my %fh_declare = @_;
-    open(F, "$fn") or die "$0: couldn't open $fn - $!\n";
-    my (%dev, %fh);
-    local $_;
-    while (<F>) {
-	/^\s*DEV_([A-Z_0-9]+)_MAJOR\s*=\s*(\d+)/ and do {
-	    my $dev = lc($1);
-	    next unless $fh_declare{$dev};
-	    my $a = sprintf "%08d", $2;
-	    $dev{$2} = '&' . $fh_declare{$dev} . " /* \L$1 */";
-	    next;
-	};
-	/^\s*FH_([A-Z_0-9]+)\s*=\s*FHDEV\s*\((\d+),\s*(\d+)\)/ and do {
-	      my $a = sprintf "%08d.%08d", $2, $3;
-	      $fh{$a} = '&' . $fh_declare{lc($1)} . " /* \L$1 */";
-	};
-    };
-    close F;
-    my $toprint = '';
-    $toprint = "const device *unit_devices[] =\n{";
-    for my $f (sort keys %dev) {
-	$toprint .= "\n  $dev{$f}," if length($dev{$f});
-    }
-    chop $toprint;
-    $toprint .= "\n};\n\nconst device *uniq_devices[] = \n{";
-    for my $f (sort keys %fh) {
-	$toprint .= "\n  $fh{$f},";
-    }
-    chop $toprint;
-    $toprint .= "\n};\n";
-    return $toprint;
-}