Sun Jun 4 22:14:11 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>

	* hurd/Makefile (sig): Added thread-self.
	* hurd/hurd.h: Declare hurd_thread_self.
	* hurd/thread-self.c: New file.

Thu Jun  1 12:17:52 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>

	* elf/rtld.c: Initialize RTLD_MAP.l_type.
	* elf/dl-reloc.c (_dl_relocate_object): Clear LAZY if relocating
 	the dynamic linker itself.

diff --git a/ChangeLog b/ChangeLog
index 48af781..44f5053 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+Sun Jun  4 22:14:11 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+       * hurd/Makefile (sig): Added thread-self.
+       * hurd/hurd.h: Declare hurd_thread_self.
+       * hurd/thread-self.c: New file.
+
+Thu Jun  1 12:17:52 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+       * elf/rtld.c: Initialize RTLD_MAP.l_type.
+       * elf/dl-reloc.c (_dl_relocate_object): Clear LAZY if relocating
+       the dynamic linker itself.
+
 Tue May 30 15:52:32 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
 
        * mach/Makefile (server-interfaces): Removed notify and

diff --git a/elf/dl-reloc.c b/elf/dl-reloc.c
index ebc31d0..a3590ff 100644 (file)
--- a/elf/dl-reloc.c
+++ b/elf/dl-reloc.c
@@ -76,6 +76,14 @@ _dl_relocate_object (struct link_map *l, int lazy)
     else
       scope = _dl_loaded;
 
+    if (l->l_type == lt_interpreter)
+      /* We cannot be lazy when relocating the dynamic linker itself.  It
+        was previously relocated eagerly (allowing us to be running now),
+        and needs always to be fully relocated so it can run without the
+        aid of run-time fixups (because it's the one to do them), so we
+        must always re-relocate its PLT eagerly.  */
+      lazy = 0;
+
     ELF_DYNAMIC_RELOCATE (l, lazy, resolve);
 
     /* Restore list frobnication done above for DT_SYMBOLIC.  */

diff --git a/elf/rtld.c b/elf/rtld.c
index 409b970..c36409a 100644 (file)
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -70,6 +70,13 @@ _dl_start (void *arg)
   /* Relocate ourselves so we can do normal function calls and
      data access using the global offset table.  */
 
+  /* We must initialize `l_type' to make sure it is not `lt_interpreter'.
+     That is the type to describe us, but not during bootstrapping--it
+     indicates to elf_machine_rel{,a} that we were already relocated during
+     bootstrapping, so it must anti-perform each bootstrapping relocation
+     before applying the final relocation when ld.so is linked in as
+     normal a shared library.  */
+  rtld_map.l_type = lt_library;
   ELF_DYNAMIC_RELOCATE (&rtld_map, 0, NULL);
 
 

diff --git a/hurd/Makefile b/hurd/Makefile
index f5b3686..5e1622d 100644 (file)
--- a/hurd/Makefile
+++ b/hurd/Makefile
@@ -52,7 +52,8 @@ routines = hurdstartup hurdinit \
           ports-get ports-set hurdports hurdmsg \
           $(sig) $(dtable) hurdinline port-cleanup
 sig    = hurdsig hurdfault faultexc siginfo hurd-raise preempt-sig \
-         trampoline longjmp-ts catch-exc exc2signal hurdkill sigunwind
+         trampoline longjmp-ts catch-exc exc2signal hurdkill sigunwind \
+         thread-self
 dtable = dtable port2fd new-fd alloc-fd intern-fd \
          getdport openport \
          fd-close fd-read fd-write hurdioctl ctty-input ctty-output

diff --git a/hurd/hurd.h b/hurd/hurd.h
index 968910f..e0ba62e 100644 (file)
--- a/hurd/hurd.h
+++ b/hurd/hurd.h
@@ -281,6 +281,10 @@ extern pid_t __task2pid (task_t task), task2pid (task_t task);
 
 extern task_t __pid2task (pid_t pid), pid2task (pid_t pid);
 
+/* Return the current thread's thread port.  This is a cheap operation (no
+   system call), but it relies on Hurd signal state being set up.  */
+extern thread_t hurd_thread_self (void);
+
 
 /* Return the io server port for file descriptor FD.
    This adds a Mach user reference to the returned port.

diff --git a/hurd/thread-self.c b/hurd/thread-self.c
new file mode 100644 (file)
index 0000000..ff0992c
--- /dev/null
+++ b/hurd/thread-self.c
@@ -0,0 +1,26 @@
+/* Cheap function to get current thread from sigstate without a syscall.
+Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <hurd/signal.h>
+
+thread_t
+hurd_thread_self (void)
+{
+  return _hurd_self_sigstate ()->thread;
+}