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* how-signals-work.txt: Mention that info is obsolete.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, 13 insertions, 13 deletions

diff --git a/winsup/cygwin/mmap.cc b/winsup/cygwin/mmap.cc
index fe679788c..a553345fa 100644
--- a/winsup/cygwin/mmap.cc
+++ b/winsup/cygwin/mmap.cc
@@ -39,9 +39,9 @@ static fhandler_disk_file fh_paging_file;
    for duplicating all mmaps after fork() since mmaps are not propagated
    to child processes by Windows.  All information must be duplicated
    by hand, see fixup_mmaps_after_fork().
-  
+
    The class structure:
-  
+
    One member of class map per process, global variable mmapped_areas.
    Contains a dynamic class list array.  Each list entry represents all
    mapping to a file, keyed by file descriptor and file name hash.
@@ -318,13 +318,13 @@ list::add_record (mmap_record r, _off64_t off, DWORD len)
     {
       mmap_record *new_recs;
       if (maxrecs == 0)
-        new_recs = (mmap_record *)
+	new_recs = (mmap_record *)
 			cmalloc (HEAP_MMAP, 5 * sizeof (mmap_record));
       else
 	new_recs = (mmap_record *)
 			crealloc (recs, (maxrecs + 5) * sizeof (mmap_record));
       if (!new_recs)
-        return NULL;
+	return NULL;
       maxrecs += 5;
       recs = new_recs;
     }
@@ -425,11 +425,11 @@ map::add_list (int fd)
     {
       list *new_lists;
       if (maxlists == 0)
-        new_lists = (list *) cmalloc (HEAP_MMAP, 5 * sizeof (list));
+	new_lists = (list *) cmalloc (HEAP_MMAP, 5 * sizeof (list));
       else
 	new_lists = (list *) crealloc (lists, (maxlists + 5) * sizeof (list));
       if (!new_lists)
-        return NULL;
+	return NULL;
       maxlists += 5;
       lists = new_lists;
     }
@@ -444,7 +444,7 @@ map::del_list (int i)
     {
       lists[i].free_recs ();
       for (; i < nlists - 1; i++)
-        lists[i] = lists[i + 1];
+	lists[i] = lists[i + 1];
       nlists--;
     }
 }
@@ -668,16 +668,16 @@ munmap (void *addr, size_t len)
       DWORD u_len;
 
       while ((record_idx = map_list->search_record((caddr_t)addr, len, u_addr,
-      						   u_len, record_idx)) >= 0)
+						   u_len, record_idx)) >= 0)
 	{
 	  mmap_record *rec = map_list->get_record (record_idx);
 	  if (rec->unmap_pages (u_addr, u_len))
 	    {
 	      /* The whole record has been unmapped, so we now actually
-	         unmap it from the system in full length... */
+		 unmap it from the system in full length... */
 	      fhandler_base *fh = rec->alloc_fh ();
 	      fh->munmap (rec->get_handle (),
-	      		  rec->get_address (),
+			  rec->get_address (),
 			  rec->get_size ());
 	      rec->free_fh (fh);
 
@@ -735,7 +735,7 @@ msync (void *addr, size_t len, int flags)
     {
       mmap_record *rec;
       for (int record_idx = 0;
-      	   (rec = map_list->get_record (record_idx));
+	   (rec = map_list->get_record (record_idx));
 	   ++record_idx)
 	{
 	  if (rec->access ((caddr_t)addr))
@@ -746,7 +746,7 @@ msync (void *addr, size_t len, int flags)
 		  goto invalid_address_range;
 	      fhandler_base *fh = rec->alloc_fh ();
 	      int ret = fh->msync (rec->get_handle (), (caddr_t)addr, len,
-	      			   flags);
+				   flags);
 	      rec->free_fh (fh);
 
 	      if (ret)
@@ -1012,7 +1012,7 @@ fixup_mmaps_after_fork (HANDLE parent)
     {
       mmap_record *rec;
       for (int record_idx = 0;
-      	   (rec = map_list->get_record (record_idx));
+	   (rec = map_list->get_record (record_idx));
 	   ++record_idx)
 	{