diff options
| -rw-r--r-- | ChangeLog | 12 | ||||
| -rw-r--r-- | elf/dl-reloc.c | 8 | ||||
| -rw-r--r-- | elf/rtld.c | 7 | ||||
| -rw-r--r-- | hurd/Makefile | 3 | ||||
| -rw-r--r-- | hurd/hurd.h | 4 | ||||
| -rw-r--r-- | hurd/thread-self.c | 26 |
6 files changed, 59 insertions, 1 deletions
@@ -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 ebc31d07fa..a3590ff749 100644 --- 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 409b9705d8..c36409a995 100644 --- 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 f5b36867a5..5e1622d87d 100644 --- 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 968910fffb..e0ba62eede 100644 --- 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 index 0000000000..ff0992ce68 --- /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; +} |