Update.

2001-10-02  Jakub Jelinek  <jakub@redhat.com>
	    H.J. Lu  <hjl@gnu.org>

	* configure.in (libc_cv_gcc_static_libgcc): Set to -static-libgcc
	if gcc supports this flag.
	(EXPORT_UNWIND_FIND_FDE): Define unless target configure disables it.
	(gcc3): Allow glibc to be compiled with gcc 3.x.
	* config.h.in (EXPORT_UNWIND_FIND_FDE): Add.
	* config.make.in (static-libgcc, unwind-find-fde): Add.
	* Makerules (build-shlib-helper, build-module-helper): Use it.
	* scripts/versions.awk: Make sure GLIBC_ versions come first.
	* elf/soinit.c (__libc_global_ctors): Set tbases and dbases if
	necessary.
	(_fini): Call __deregister_frame_info_bases if
	__register_frame_info_bases was used to register.
	* elf/Versions (__register_frame_info, __deregister_frame_info): Add
	for GLIBC_2.0.
	(__register_frame_info_bases, __register_frame_info_table_bases,
	__deregister_frame_info_bases, _Unwind_Find_FDE): Add for GLIBC_2.2.5.
	* elf/Makefile (routines): Add unwind-dw2-fde.
	(shared-only-routines): Add unwind-dw2-fde.
	* sysdeps/alpha/gccframe.h: New file.
	* sysdeps/arm/gccframe.h: New file.
	* sysdeps/generic/framestate.c: New file.
	* sysdeps/generic/dwarf2.h: New file.
	* sysdeps/generic/gccframe.h (struct object): Update from gcc 3.0.
	* sysdeps/generic/unwind-dw2-fde.c: New file.
	* sysdeps/unix/sysv/linux/ia64/unwind-dw2-fde.c: New file.
	* sysdeps/generic/unwind-dw2-fde.h: New file.
	* sysdeps/generic/unwind-dw2.c: New file.
	* sysdeps/generic/unwind-pe.h: New file.
	* sysdeps/generic/unwind.h: New file.
	* sysdeps/hppa/gccframe.h: New file.
	* sysdeps/i386/gccframe.h: New file.
	* sysdeps/m68k/gccframe.h: New file.
	* sysdeps/mips/gccframe.h: New file.
	* sysdeps/powerpc/gccframe.h: New file.
	* sysdeps/s390/gccframe.h: New file.
	* sysdeps/sh/gccframe.h: New file.
	* sysdeps/sparc/gccframe.h: New file.
	* sysdeps/vax/gccframe.h: New file.
	* sysdeps/unix/sysv/linux/configure.in (libc_cv_gcc_unwind_find_fde):
	Set on all architectures except ia64.
	* sysdeps/mach/hurd/configure.in (libc_cv_gcc_unwind_find_fde): Set
	for i386.
	* sysdeps/mach/hurd/i386/Versions (__register_frame_info,
	__deregister_frame_info): Move to elf/Versions.
	* sysdeps/unix/sysv/linux/m68k/Versions: Likewise.
	* sysdeps/unix/sysv/linux/arm/Versions: Likewise.
	* sysdeps/unix/sysv/linux/alpha/Versions: Likewise.
	* sysdeps/unix/sysv/linux/i386/Versions: Likewise.
	* sysdeps/unix/sysv/linux/mips/Versions: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/Versions: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/Versions: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/Versions: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/Versions: Likewise.
	* sysdeps/mach/hurd/i386/Makefile (sysdep-routines): Add framestate.
	* sysdeps/unix/sysv/linux/arm/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/alpha/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/i386/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/m68k/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/mips/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/sparc/Makefile: Likewise.

	* sysdeps/unix/sysv/linux/ia64/ldd-rewrite.sed: New file.
	* sysdeps/unix/sysv/linux/s390/ldd-rewrite.sed: New file.
	* sysdeps/generic/strnlen.c: New file.

1 files changed, 165 insertions, 0 deletions

diff --git a/sysdeps/generic/unwind-dw2-fde.h b/sysdeps/generic/unwind-dw2-fde.h
new file mode 100644
index 0000000000..83b4470ce5
--- /dev/null
+++ b/sysdeps/generic/unwind-dw2-fde.h
@@ -0,0 +1,165 @@
+/* Subroutines needed for unwinding stack frames for exception handling.  */
+/* Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Contributed by Jason Merrill <jason@cygnus.com>.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file.  (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
+
+GNU CC 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+
+struct fde_vector
+{
+  void *orig_data;
+  size_t count;
+  struct dwarf_fde *array __flexarr;
+};
+
+#ifdef _LIBC
+#include <gccframe.h>
+#else
+struct object
+{
+  void *pc_begin;
+  void *tbase;
+  void *dbase;
+  union {
+    struct dwarf_fde *single;
+    struct dwarf_fde **array;
+    struct fde_vector *sort;
+  } u;
+
+  union {
+    struct {
+      unsigned long sorted : 1;
+      unsigned long from_array : 1;
+      unsigned long mixed_encoding : 1;
+      unsigned long encoding : 8;
+      /* ??? Wish there was an easy way to detect a 64-bit host here;
+	 we've got 32 bits left to play with... */
+      unsigned long count : 21;
+    } b;
+    size_t i;
+  } s;
+
+  struct object *next;
+};
+#endif
+
+/* This is the original definition of struct object.  While the struct
+   itself was opaque to users, they did know how large it was, and
+   allocate one statically in crtbegin for each DSO.  Keep this around
+   so that we're aware of the static size limitations for the new struct.  */
+struct old_object
+{
+  void *pc_begin;
+  void *pc_end;
+  struct dwarf_fde *fde_begin;
+  struct dwarf_fde **fde_array;
+  size_t count;
+  struct old_object *next;
+};
+
+struct dwarf_eh_bases
+{
+  void *tbase;
+  void *dbase;
+  void *func;
+};
+
+
+extern void __register_frame_info_bases (void *, struct object *,
+					 void *, void *);
+extern void __register_frame_info (void *, struct object *);
+extern void __register_frame (void *);
+extern void __register_frame_info_table_bases (void *, struct object *,
+					       void *, void *);
+extern void __register_frame_info_table (void *, struct object *);
+extern void __register_frame_table (void *);
+extern void *__deregister_frame_info (void *);
+extern void *__deregister_frame_info_bases (void *);
+extern void __deregister_frame (void *);
+
+
+typedef          int  sword __attribute__ ((mode (SI)));
+typedef unsigned int  uword __attribute__ ((mode (SI)));
+typedef unsigned int  uaddr __attribute__ ((mode (pointer)));
+typedef          int  saddr __attribute__ ((mode (pointer)));
+typedef unsigned char ubyte;
+
+/* Terminology:
+   CIE - Common Information Element
+   FDE - Frame Descriptor Element
+
+   There is one per function, and it describes where the function code
+   is located, and what the register lifetimes and stack layout are
+   within the function.
+
+   The data structures are defined in the DWARF specfication, although
+   not in a very readable way (see LITERATURE).
+
+   Every time an exception is thrown, the code needs to locate the FDE
+   for the current function, and starts to look for exception regions
+   from that FDE. This works in a two-level search:
+   a) in a linear search, find the shared image (i.e. DLL) containing
+      the PC
+   b) using the FDE table for that shared object, locate the FDE using
+      binary search (which requires the sorting).  */   
+
+/* The first few fields of a CIE.  The CIE_id field is 0 for a CIE,
+   to distinguish it from a valid FDE.  FDEs are aligned to an addressing
+   unit boundary, but the fields within are unaligned.  */
+struct dwarf_cie
+{
+  uword length;
+  sword CIE_id;
+  ubyte version;
+  unsigned char augmentation __flexarr;
+} __attribute__ ((packed, aligned (__alignof__ (void *))));
+
+/* The first few fields of an FDE.  */
+struct dwarf_fde
+{
+  uword length;
+  sword CIE_delta;
+  unsigned char pc_begin __flexarr;
+} __attribute__ ((packed, aligned (__alignof__ (void *))));
+
+typedef struct dwarf_fde fde;
+
+/* Locate the CIE for a given FDE.  */
+
+static inline struct dwarf_cie *
+get_cie (struct dwarf_fde *f)
+{
+  return (void *)&f->CIE_delta - f->CIE_delta;
+}
+
+static inline fde *
+next_fde (fde *f)
+{
+  return (fde *)((char *)f + f->length + sizeof (f->length));
+}
+
+extern fde * _Unwind_Find_FDE (void *, struct dwarf_eh_bases *);