Update.

2001-07-25  Jakub Jelinek  <jakub@redhat.com>

	* elf/Makefile (routines): Add dl-iteratephdr and
	dl-iteratephdr-static.
	(elide-routines.os): Add dl-iteratephdr-static.
	* elf/dl-iteratephdr.c: New file.
	* elf/link.h (struct dl_phdr_info): New definition.
	(dl_iterate_phdr): New prototype.
	* elf/Versions (dl_iterate_phdr): Add at GLIBC_2.2.4.
	* include/link.h (struct dl_phdr_info): New definition.
	(dl_iterate_phdr, __dl_iterate_phdr): New prototypes.
	* sysdeps/generic/dl-iteratephdr-static.c: New file.
	* sysdeps/unix/sysv/linux/ia64/dl-iteratephdr-static.c: New file.

	* hurd/hurdsig.c (_hurdsig_init): Fix incorrect initialization
	of pending signals.

ChangeLog

@@ -1,7 +1,21 @@
+2001-07-25  Jakub Jelinek  <jakub@redhat.com>
+
+	* elf/Makefile (routines): Add dl-iteratephdr and
+	dl-iteratephdr-static.
+	(elide-routines.os): Add dl-iteratephdr-static.
+	* elf/dl-iteratephdr.c: New file.
+	* elf/link.h (struct dl_phdr_info): New definition.
+	(dl_iterate_phdr): New prototype.
+	* elf/Versions (dl_iterate_phdr): Add at GLIBC_2.2.4.
+	* include/link.h (struct dl_phdr_info): New definition.
+	(dl_iterate_phdr, __dl_iterate_phdr): New prototypes.
+	* sysdeps/generic/dl-iteratephdr-static.c: New file.
+	* sysdeps/unix/sysv/linux/ia64/dl-iteratephdr-static.c: New file.
+
 2001-07-24  Igor Khavkine  <i_khavki@alcor.concordia.ca>
 
-        * hurd/hurdsig.c (_hurdsig_init): Fix incorrect initialization
+	* hurd/hurdsig.c (_hurdsig_init): Fix incorrect initialization
-        of pending signals.
+	of pending signals.
 
 2001-06-22  Jakub Jelinek  <jakub@redhat.com>
 

elf/Versions

@@ -14,6 +14,9 @@ libc {
     # functions used in other libraries
     _dl_sym; _dl_vsym;
   }
+  GLIBC_2.2.4 {
+    dl_iterate_phdr;
+  }
 }
 
 ld {

elf/dl-iteratephdr.c

@@ -0,0 +1,61 @@
+/* Get loaded objects program headers.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
+
+   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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <ldsodefs.h>
+#include <stddef.h>
+#include <bits/libc-lock.h>
+
+__libc_lock_define (extern, _dl_load_lock)
+
+int
+__dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
+				    size_t size, void *data), void *data)
+{
+  struct link_map *l;
+  struct dl_phdr_info info;
+  int ret = 0;
+
+  /* Make sure we are alone.  */
+  __libc_lock_lock (_dl_load_lock);
+
+  for (l = _dl_loaded; l != NULL; l = l->l_next)
+    {
+      /* Skip the dynamic linker.  */
+      if (l->l_phdr == NULL)
+	continue;
+      info.dlpi_addr = l->l_addr;
+      info.dlpi_name = l->l_name;
+      info.dlpi_phdr = l->l_phdr;
+      info.dlpi_phnum = l->l_phnum;
+      ret = callback (&info, sizeof (struct dl_phdr_info), data);
+      if (ret)
+	break;
+    }
+
+  /* Release the lock.  */
+  __libc_lock_unlock (_dl_load_lock);
+
+  return ret;
+}
+
+#ifdef SHARED
+weak_alias (__dl_iterate_phdr, dl_iterate_phdr);
+#endif

elf/link.h

@@ -1,6 +1,6 @@
 /* Data structure for communication from the run-time dynamic linker for
    loaded ELF shared objects.
-   Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1995-1999, 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
@@ -92,4 +92,24 @@ struct link_map
     struct link_map *l_next, *l_prev; /* Chain of loaded objects.  */
   };
 
+#ifdef __USE_GNU
+
+struct dl_phdr_info
+  {
+    ElfW(Addr) dlpi_addr;
+    const char *dlpi_name;
+    const ElfW(Phdr) *dlpi_phdr;
+    ElfW(Half) dlpi_phnum;
+  };
+
+__BEGIN_DECLS
+
+extern int dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
+					     size_t size, void *data),
+			    void *data) __THROW;
+
+__END_DECLS
+
+#endif
+
 #endif /* link.h */

include/link.h

@@ -230,4 +230,19 @@ struct link_map
     unsigned int l_idx;
   };
 
+struct dl_phdr_info
+  {
+    ElfW(Addr) dlpi_addr;
+    const char *dlpi_name;
+    const ElfW(Phdr) *dlpi_phdr;
+    ElfW(Half) dlpi_phnum;
+  };
+
+extern int dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
+					     size_t size, void *data),
+			    void *data);
+extern int __dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
+					       size_t size, void *data),
+			      void *data);
+
 #endif /* link.h */

sysdeps/generic/dl-iteratephdr-static.c

@@ -0,0 +1,31 @@
+/* Get static program's program headers.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
+
+   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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <elf/link.h>
+#include <stddef.h>
+
+int
+dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
+				  size_t size, void *data), void *data)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}

sysdeps/unix/sysv/linux/ia64/dl-iteratephdr-static.c

@@ -0,0 +1,61 @@
+/* Get static program's program headers. IA-64 version.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
+
+   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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <link.h>
+#include <stddef.h>
+
+extern unsigned long ip_segrel;
+
+asm (".section .rodata; ip_segrel: data8 @segrel(ip#); .previous");
+
+int
+dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
+				  size_t size, void *data), void *data)
+{
+  char *ip;
+  ElfW(Ehdr) *ehdr;
+  struct dl_phdr_info info;
+  int ret;
+
+  asm ("ip: mov %0 = ip" : "=r" (ip));
+  ehdr = (ElfW(Ehdr) *) (ip - ip_segrel);
+
+  assert (ehdr->e_ident[0] == 0x7f
+	  && ehdr->e_ident[1] == 'E'
+	  && ehdr->e_ident[2] == 'L'
+	  && ehdr->e_ident[3] == 'F'
+	  && ehdr->e_ident[EI_CLASS] == ELFCLASS64
+	  && ehdr->e_ident[EI_DATA] == ELFDATA2LSB
+	  && ehdr->e_machine == EM_IA_64
+	  && ehdr->e_type == ET_EXEC);
+
+  info.dlpi_addr = 0;
+  info.dlpi_name = NULL;
+  info.dlpi_phdr = (ElfW(Phdr) *) ((char *) ehdr + ehdr->e_phoff);
+  info.dlpi_phnum = ehdr->e_phnum;
+
+  ret = callback (&info, sizeof (struct dl_phdr_info), data);
+  if (ret)
+    return ret;
+
+  return __dl_iterate_phdr (callback, data);
+}