Update.

	* elf/Makefile: Add rules to build and run initfirst test.
	* elf/initfirst.c: New file.
	* elf/firstobj.c: New file.

5 files changed, 192 insertions, 2 deletions

diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index b28b706..e4739ca 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -1,3 +1,12 @@
+2001-02-01  Ulrich Drepper  <drepper@redhat.com>
+
+	* Makefile: Add rules to build crti.o and make it being used in
+	building libpthread.so.
+	* sysdeps/i386/Makefile: New file.
+	* sysdeps/pthread/pt-initfini.c: New file.
+
+	* pthread.c: Cleanups.
+
 2001-01-28  Andreas Jaeger  <aj@suse.de>
 
 	* oldsemaphore.c (__old_sem_init): Adjust for last change.
diff --git a/linuxthreads/Makefile b/linuxthreads/Makefile
index d3364ea..9c80a00 100644
--- a/linuxthreads/Makefile
+++ b/linuxthreads/Makefile
@@ -38,12 +38,20 @@ libpthread-routines := attr cancel condvar join manager mutex ptfork \
 		       oldsemaphore events getcpuclockid pspinlock barrier
 
 nodelete-yes = -Wl,--enable-new-dtags,-z,nodelete
-LDFLAGS-pthread.so = $(nodelete-$(have-z-nodelete))
+initfirst-yes = -Wl,--enable-new-dtags,-z,initfirst
+LDFLAGS-pthread.so = $(nodelete-$(have-z-nodelete)) \
+		     $(initfirst-$(have-z-initfirst))
 
 vpath %.c Examples
 
 include ../Makeconfig
 
+ifeq ($(build-shared),yes)
+before-compile := $(objpfx)crti.o
+
+CFLAGS-pt-initfini.s = -g0 -fPIC -fno-inline-functions
+endif
+
 librt-tests = ex10 ex11
 tests = ex1 ex2 ex3 ex4 ex5 ex6 ex7 ex8 ex9 $(librt-tests) ex12 ex13 joinrace \
 	tststack $(tests-nodelete-$(have-z-nodelete)) ecmutex ex14 ex15 ex16
@@ -54,6 +62,8 @@ endif
 
 include ../Rules
 
+extra-B-pthread.so = -B$(common-objpfx)linuxthreads/
+
 znodelete-yes = -DHAVE_Z_NODELETE
 CFLAGS-mutex.c += -D__NO_WEAK_PTHREAD_ALIASES
 CFLAGS-specific.c += -D__NO_WEAK_PTHREAD_ALIASES
@@ -80,3 +90,27 @@ ifeq ($(build-bounded),yes)
 $(tests:%=$(objpfx)%-bp): $(objpfx)libpthread_b.a
 $(librt-tests:%=$(objpfx)%-bp): $(common-objpfx)rt/librt_b.a
 endif
+
+ifeq ($(build-shared),yes)
+vpath pt-initfini.c $(full_config_sysdirs)
+
+$(objpfx)pt-initfini.s: pt-initfini.c
+	$(compile.c) -S $(CFLAGS-pt-initfini.s) -finhibit-size-directive \
+		$(patsubst -f%,-fno-%,$(exceptions)) -o $@
+
+# We only have one kind of startup code files.  Static binaries and
+# shared libraries are build using the PIC version.
+$(objpfx)crti.S: $(objpfx)pt-initfini.s
+	sed -n -e '1,/@HEADER_ENDS/p' \
+	       -e '/@_.*_PROLOG_BEGINS/,/@_.*_PROLOG_ENDS/p' \
+	       -e '/@TRAILER_BEGINS/,$$p' $< > $@
+
+$(objpfx)defs.h: $(objpfx)pt-initfini.s
+	sed -n -e '/@TESTS_BEGIN/,/@TESTS_END/p' $< | \
+		$(AWK) -f ../csu/defs.awk > $@
+
+$(objpfx)crti.o: $(objpfx)crti.S $(objpfx)defs.h
+	$(compile.S) -g0 $(ASFLAGS-.os) -o $@
+
+generated += crti.S defs.h pt-initfini.s
+endif
diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c
index 7b74b00..5a2ade7 100644
--- a/linuxthreads/pthread.c
+++ b/linuxthreads/pthread.c
@@ -352,7 +352,7 @@ is_smp_system (void)
 		sizeof (sysctl_args) / sizeof (sysctl_args[0]),
 		buf, &reslen, NULL, 0) < 0)
     {
-      /*This was not successful.  Now try reading the /proc filesystem.  */
+      /* This was not successful.  Now try reading the /proc filesystem.  */
       int fd = __open ("/proc/sys/kernel/version", O_RDONLY);
       if (__builtin_expect (fd, 0) == -1
 	  || (reslen = __read (fd, buf, sizeof (buf))) <= 0)
@@ -375,7 +375,9 @@ is_smp_system (void)
 
 static void pthread_initialize(void) __attribute__((constructor));
 
+#ifndef HAVE_Z_NODELETE
 extern void *__dso_handle __attribute__ ((weak));
+#endif
 
 
 /* Do some minimal initialization which has to be done during the
diff --git a/linuxthreads/sysdeps/i386/Makefile b/linuxthreads/sysdeps/i386/Makefile
new file mode 100644
index 0000000..811a799
--- /dev/null
+++ b/linuxthreads/sysdeps/i386/Makefile
@@ -0,0 +1,5 @@
+ifeq ($(subdir),linuxthreads)
+# On i686 we must avoid generating the trampoline functions generated
+# to get the GOT pointer.
+CFLAGS-pt-initfini.s += -march=i386 -mcpu=i386
+endif
diff --git a/linuxthreads/sysdeps/pthread/pt-initfini.c b/linuxthreads/sysdeps/pthread/pt-initfini.c
new file mode 100644
index 0000000..a86c967
--- /dev/null
+++ b/linuxthreads/sysdeps/pthread/pt-initfini.c
@@ -0,0 +1,140 @@
+/* Special .init and .fini section support.  Linuxthread version.
+   Copyright (C) 1995, 1996, 1997, 2000, 2001 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.
+
+   In addition to the permissions in the GNU Library General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file.  (The Library General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   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, 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* This file is compiled into assembly code which is then munged by a sed
+   script into two files: crti.s and crtn.s.
+
+   * crti.s puts a function prologue at the beginning of the
+   .init and .fini sections and defines global symbols for
+   those addresses, so they can be called as functions.
+
+   * crtn.s puts the corresponding function epilogues
+   in the .init and .fini sections. */
+
+#include <stdlib.h>
+
+/* We use embedded asm for .section unconditionally, as this makes it
+   easier to insert the necessary directives into crtn.S. */
+#define SECTION(x) asm (".section " x )
+
+/* Embed an #include to pull in the alignment and .end directives. */
+asm ("\n#include \"defs.h\"");
+
+/* The initial common code ends here. */
+asm ("\n/*@HEADER_ENDS*/");
+
+/* To determine whether we need .end and .align: */
+asm ("\n/*@TESTS_BEGIN*/");
+extern void dummy (void (*foo) (void));
+void
+dummy (void (*foo) (void))
+{
+  if (foo)
+    (*foo) ();
+}
+asm ("\n/*@TESTS_END*/");
+
+/* The beginning of _init:  */
+asm ("\n/*@_init_PROLOG_BEGINS*/");
+
+static void
+call_initialize_minimal (void)
+{
+  __pthread_initialize_minimal ();
+}
+
+static void
+call_gmon_start(void)
+{
+  extern void __gmon_start__ (void) __attribute__ ((weak)); /*weak_extern (__gmon_start__);*/
+  void (*gmon_start) (void) = __gmon_start__;
+
+  if (gmon_start)
+    gmon_start ();
+}
+
+SECTION (".init");
+extern void _init (void);
+void
+_init (void)
+{
+  /* The very first thing we must do is to set up the registers.  */
+  call_initialize_minimal ();
+
+  /* We cannot use the normal constructor mechanism in gcrt1.o because it
+     appears before crtbegin.o in the link, so the header elt of .ctors
+     would come after the elt for __gmon_start__.  One approach is for
+     gcrt1.o to reference a symbol which would be defined by some library
+     module which has a constructor; but then user code's constructors
+     would come first, and not be profiled.  */
+  call_gmon_start ();
+
+  asm ("ALIGN");
+  asm("END_INIT");
+  /* Now the epilog. */
+  asm ("\n/*@_init_PROLOG_ENDS*/");
+  asm ("\n/*@_init_EPILOG_BEGINS*/");
+  SECTION(".init");
+}
+asm ("END_INIT");
+
+/* End of the _init epilog, beginning of the _fini prolog. */
+asm ("\n/*@_init_EPILOG_ENDS*/");
+asm ("\n/*@_fini_PROLOG_BEGINS*/");
+
+SECTION (".fini");
+extern void _fini (void);
+void
+_fini (void)
+{
+
+  /* End of the _fini prolog. */
+  asm ("ALIGN");
+  asm ("END_FINI");
+  asm ("\n/*@_fini_PROLOG_ENDS*/");
+
+  {
+    /* Let GCC know that _fini is not a leaf function by having a dummy
+       function call here.  We arrange for this call to be omitted from
+       either crt file.  */
+    extern void i_am_not_a_leaf (void);
+    i_am_not_a_leaf ();
+  }
+
+  /* Beginning of the _fini epilog. */
+  asm ("\n/*@_fini_EPILOG_BEGINS*/");
+  SECTION (".fini");
+}
+asm ("END_FINI");
+
+/* End of the _fini epilog.  Any further generated assembly (e.g. .ident)
+   is shared between both crt files. */
+asm ("\n/*@_fini_EPILOG_ENDS*/");
+asm ("\n/*@TRAILER_BEGINS*/");
+
+/* End of file. */