Update.

2000-05-05  Ulrich Drepper  <drepper@redhat.com>

	* elf/dl-load.c (_dl_map_object_from_fd): Little of computation of
	parameter to mprotect and for variable assignments.

2000-05-03  Jes Sorensen  <jes@linuxcare.com>

	* sysdeps/generic/ldsodefs.h (LOOKUP_VALUE_ADDRESS): Check the
	validity of map before dereferencing it.

	* elf/dl-reloc.c (RESOLVE_MAP): Define.

2000-05-02  Jes Sorensen  <jes@linuxcare.com>

	* elf/dl-runtime.c (fixup): Add the value returned in the symbol
	lookup to the arguments to elf_machine_fixup_plt().

	* sysdeps/ia64/dl-machine.h (elf_machine_fixup_plt): Add Link_map
	of the symbol being resolved to input argument list and make the
	function return the pointer to the reloc.

	* sysdeps/alpha/dl-machine.h (elf_machine_fixup_plt): Change
	return valuie to lookup_t and return the value.
	* sysdeps/arm/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/generic/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/i386/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/m68k/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_fixup_plt): Likewise.

	* sysdeps/powerpc/dl-machine.h (elf_machine_fixup_plt): Likewise.
	Make it an inline function returning value after calling
	__elf_machine_fixup_plt().

	* elf/dl-sym.c (_dl_vsym): Use DL_SYMBOL_ADDRESS() to obtain the
	symbol address.

	* elf/dl-symbol.c (_dl_symbol_value): Use LOOKUP_VALUE_ADDRESS to
	obtain the symbol address.

	* sysdeps/generic/ldsodefs.h: Add generic DL_SYMBOL_ADDRESS() macro
	depending on the definition of ELF_FUNCTION_PTR_IS_SPECIAL.

	* sysdeps/ia64/dl-machine.h: Add DL_SYMBOL_ADDRESS() macro calling
	_dl_symbol_address() - this way DL_SYMBOL_ADDRESS() turns into an
	inline on non ia64.

2000-04-28  Jes Sorensen  <jes@linuxcare.com>

	* elf/dl-runtime.c (fixup): Use the portable macros to get the
	symbol address of an object.

	* elf/dl-runtime.c (fixup-profile): Use the portable macros to get
	the symbol address of an object.

	* elf/dl-libc.c (struct do_dlsym_args): Change loadbase to a lookup_t.
	* elf/dl-lookup.c (_dl_lookup_symbol): Likewise.
	(_dl_lookup_symbol_skip): Likewise.
	(_dl_lookup_versioned_symbol): Likewise.
	(_dl_lookup_versioned_symbol_skip): Likewise.

2000-04-27  Jes Sorensen  <jes@linuxcare.com>

	* elf/rtld.c (_dl_start): Get the function pointer return address
	via _dl_start_address for architectures that need a function
	pointer descriptor rather than just a pointer (ia64).

	* sysdeps/generic/dl-lookupcfg.h: New file.
	* sysdeps/ia64/dl-lookupcfg.h: New file.
	* sysdeps/ia64/dl-machine.h: New file.
	* sysdeps/ia64/dl-symaddr.c: New file.
	* sysdeps/ia64/dl-fptr.c: New file.

	* elf/elf.h: Add IA-64 specific definitions.

4 files changed, 833 insertions, 0 deletions

diff --git a/sysdeps/ia64/dl-fptr.c b/sysdeps/ia64/dl-fptr.c
new file mode 100644
index 0000000..0fb9654
--- /dev/null
+++ b/sysdeps/ia64/dl-fptr.c
@@ -0,0 +1,186 @@
+/* Unmap a loaded object.  IA-64 version.
+   Copyright (C) 1999, 2000 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <unistd.h>
+#include <string.h>
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <link.h>
+#include <ldsodefs.h>
+#include <elf/dynamic-link.h>
+#include <dl-machine.h>
+#ifdef _LIBC_REENTRANT
+# include <pt-machine.h>
+
+static int __ia64_fptr_lock = 0;
+#endif
+
+/* Because ld.so is now versioned, these functions can be in their own
+   file; no relocations need to be done to call them.  Of course, if
+   ld.so is not versioned...  */
+#if 0
+#ifndef DO_VERSIONING
+# error "This will not work with versioning turned off, sorry."
+#endif
+#endif
+
+#ifdef MAP_ANON
+/* The fd is not examined when using MAP_ANON.  */
+#define ANONFD -1
+#else
+extern int _dl_zerofd;
+#define ANONFD _dl_zerofd
+#endif
+
+
+/* ld.so currently has 14 FPTR relocs, we take 256 and use them for
+   the relocs for the dynamic app itself.  */
+struct ia64_fptr __boot_ldso_fptr[IA64_BOOT_FPTR_SIZE];
+struct ia64_fptr *__fptr_root = NULL;
+struct ia64_fptr *__fptr_next = __boot_ldso_fptr;
+static struct ia64_fptr *__fptr_free = NULL;
+int __fptr_count = IA64_BOOT_FPTR_SIZE;
+
+Elf64_Addr
+__ia64_make_fptr (const struct link_map *sym_map, Elf64_Addr value,
+		  struct ia64_fptr **root, struct ia64_fptr *mem)
+{
+  struct ia64_fptr **loc;
+  struct ia64_fptr *f;
+
+#ifdef _LIBC_REENTRANT
+  /* Make sure we are alone. We don't need a lock during bootstrap. */
+  if (mem == NULL)
+    while (testandset (&__ia64_fptr_lock));
+#endif
+
+  /* Search the sorted linked list for an existing entry for this
+     symbol.  */
+  loc = root;
+  f = *loc;
+  while (f != NULL && f->func <= value)
+    {
+      if (f->func == value)
+	goto found;
+      loc = &f->next;
+      f = *loc;
+    }
+
+  /* Not found.  Create a new one.  */
+  if (mem != NULL)
+    f = mem;
+  else if (__fptr_free != NULL)
+    {
+      f = __fptr_free;
+      __fptr_free = f->next;
+    }
+  else
+    {
+      if (__fptr_count == 0)
+	{
+#ifndef MAP_ANON
+# define MAP_ANON 0
+	  if (_dl_zerofd == -1)
+	    {
+	      _dl_zerofd = _dl_sysdep_open_zero_fill ();
+	      if (_dl_zerofd == -1)
+		{
+		  __close (fd);
+		  _dl_signal_error (errno, NULL,
+				    "cannot open zero fill device");
+		}
+	    }
+#endif
+
+	  __fptr_next = __mmap (0, _dl_pagesize, PROT_READ | PROT_WRITE,
+				MAP_ANON | MAP_PRIVATE, ANONFD, 0);
+	  if (__fptr_next == MAP_FAILED)
+	    _dl_signal_error(errno, NULL, "cannot map page for fptr");
+	  __fptr_count = _dl_pagesize / sizeof (struct ia64_fptr);
+	}
+      f = __fptr_next++;
+      __fptr_count--;
+    }
+
+  f->func = value;
+  /* GOT has already been relocated in elf_get_dynamic_info - don't
+     try to relocate it again.  */
+  f->gp = sym_map->l_info[DT_PLTGOT]->d_un.d_ptr;
+  f->next = *loc;
+  *loc = f;
+
+found:
+#ifdef _LIBC_REENTRANT
+  /* Release the lock.  */
+  if (mem == NULL)
+    __ia64_fptr_lock = 0;
+#endif
+
+  return (Elf64_Addr) f;
+}
+
+void
+_dl_unmap (struct link_map *map)
+{
+  struct ia64_fptr **floc;
+  struct ia64_fptr *f;
+  struct ia64_fptr **lloc;
+  struct ia64_fptr *l;
+
+  __munmap ((void *) map->l_map_start, map->l_map_end - map->l_map_start);
+
+#ifdef _LIBC_REENTRANT
+  /* Make sure we are alone.  */
+  while (testandset (&__ia64_fptr_lock));
+#endif
+
+  /* Search the sorted linked list for the first entry for this object.  */
+  floc = &__fptr_root;
+  f = *floc;
+  while (f != NULL && f->func < map->l_map_start)
+    {
+      floc = &f->next;
+      f = *floc;
+    }
+
+  /* We found one.  */
+  if (f != NULL && f->func < map->l_map_end)
+    {
+      /* Get the last entry.  */
+      lloc = floc;
+      l = f;
+      while (l && l->func < map->l_map_end)
+	{
+	  lloc = &l->next;
+	  l = *lloc;
+	}
+
+      /* Updated FPTR.  */
+      *floc = l;
+
+      /* Prepend them to the free list.  */
+      *lloc = __fptr_free;
+      __fptr_free = f;
+    }
+
+#ifdef _LIBC_REENTRANT
+  /* Release the lock.   */
+  __ia64_fptr_lock = 0;
+#endif
+}
diff --git a/sysdeps/ia64/dl-lookupcfg.h b/sysdeps/ia64/dl-lookupcfg.h
new file mode 100644
index 0000000..f954a5c
--- /dev/null
+++ b/sysdeps/ia64/dl-lookupcfg.h
@@ -0,0 +1,23 @@
+/* Configuration of lookup functions.
+   Copyright (C) 2000 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* The ia64 need more information from the symbol lookup function
+   than just the address. */
+#define DL_LOOKUP_RETURNS_MAP
+#define ELF_FUNCTION_PTR_IS_SPECIAL
diff --git a/sysdeps/ia64/dl-machine.h b/sysdeps/ia64/dl-machine.h
new file mode 100644
index 0000000..7fba08d
--- /dev/null
+++ b/sysdeps/ia64/dl-machine.h
@@ -0,0 +1,585 @@
+/* Machine-dependent ELF dynamic relocation inline functions.  IA-64 version.
+   Copyright (C) 1995, 1996, 1997, 2000 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.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef dl_machine_h
+#define dl_machine_h 1
+
+#define ELF_MACHINE_NAME "ia64"
+
+#include <assert.h>
+#include <string.h>
+#include <link.h>
+#include <errno.h>
+
+
+/* Translate a processor specific dynamic tag to the index
+   in l_info array.  */
+#define DT_IA_64(x) (DT_IA_64_##x - DT_LOPROC + DT_NUM)
+
+
+/* An FPTR is a function descriptor.  Properly they consist of just
+   FUNC and GP.  But we want to traverse a binary tree too.  */
+
+#define IA64_BOOT_FPTR_SIZE	256
+
+struct ia64_fptr
+{
+  Elf64_Addr func;
+  Elf64_Addr gp;
+  struct ia64_fptr *next;
+};
+
+extern struct ia64_fptr __boot_ldso_fptr[];
+extern struct ia64_fptr *__fptr_next;
+extern struct ia64_fptr *__fptr_root;
+extern int __fptr_count;
+
+extern Elf64_Addr __ia64_make_fptr (const struct link_map *, Elf64_Addr,
+				    struct ia64_fptr **, struct ia64_fptr *);
+
+/* Return nonzero iff E_MACHINE is compatible with the running host.  */
+static inline int
+elf_machine_matches_host (Elf64_Word e_machine)
+{
+  return e_machine == EM_IA_64;
+}
+
+void * _dl_symbol_address (const struct link_map *map, const ElfW(Sym) *ref);
+
+#define DL_SYMBOL_ADDRESS(map, ref) _dl_symbol_address(map, ref)
+
+
+/* Return the link-time address of _DYNAMIC.  */
+static inline Elf64_Addr
+elf_machine_dynamic (void)
+{
+  Elf64_Addr *p;
+
+  __asm__(
+	".section .sdata\n"
+	"	.type __dynamic_ltv#, @object\n"
+	"	.size __dynamic_ltv#, 8\n"
+	"__dynamic_ltv:\n"
+	"	data8	@ltv(_DYNAMIC#)\n"
+	".previous\n"
+	"	addl	%0 = @gprel(__dynamic_ltv#), gp ;;"
+	: "=r"(p));
+
+  return *p;
+}
+
+
+/* Return the run-time load address of the shared object.  */
+static inline Elf64_Addr
+elf_machine_load_address (void)
+{
+  Elf64_Addr ip;
+  int *p;
+
+  __asm__(
+	"1:	mov %0 = ip\n"
+	".section .sdata\n"
+	"2:	data4	@ltv(1b)\n"
+	"       .align 8\n"
+	".previous\n"
+	"	addl	%1 = @gprel(2b), gp ;;"
+	: "=r"(ip), "=r"(p));
+
+  return ip - (Elf64_Addr)*p;
+}
+
+
+/* Set up the loaded object described by L so its unrelocated PLT
+   entries will jump to the on-demand fixup code in dl-runtime.c.  */
+
+static inline int
+elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+{
+  extern void _dl_runtime_resolve (void);
+  extern void _dl_runtime_profile (void);
+
+  if (lazy)
+    {
+      register Elf64_Addr gp __asm__("gp");
+      Elf64_Addr *reserve, doit;
+
+      /*
+       * Careful with the typecast here or it will try to add l-l_addr
+       * pointer elements
+       */
+      reserve = (Elf64_Addr *)
+	      (l->l_info[DT_IA_64(PLT_RESERVE)]->d_un.d_ptr + l->l_addr);
+      /* Identify this shared object.  */
+      reserve[0] = (Elf64_Addr) l;
+
+      /* This function will be called to perform the relocation.  */
+      if (!profile)
+	doit = (Elf64_Addr) ((struct ia64_fptr *)&_dl_runtime_resolve)->func;
+      else
+	{
+	  if (_dl_name_match_p (_dl_profile, l))
+	    {
+	      /* This is the object we are looking for.  Say that we really
+		 want profiling and the timers are started.  */
+	      _dl_profile_map = l;
+	    }
+	  doit = (Elf64_Addr) ((struct ia64_fptr *)&_dl_runtime_profile)->func;
+	}
+
+      reserve[1] = doit;
+      reserve[2] = gp;
+    }
+
+  return lazy;
+}
+
+
+/*
+   This code is used in dl-runtime.c to call the `fixup' function
+   and then redirect to the address it returns. `fixup()' takes two
+   arguments, however fixup_profile() takes three.
+
+   The ABI specifies that we will never see more than 8 input
+   registers to a function call, thus it is safe to simply allocate
+   those, and simpler than playing stack games.
+					                     - 12/09/99 Jes
+ */
+#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name) \
+  extern void tramp_name (void); \
+  asm ( "\
+	.global " #tramp_name "#
+	.proc " #tramp_name "#
+" #tramp_name ":
+	{ .mmi
+	  alloc loc0 = ar.pfs, 8, 2, 3, 0
+	  adds r2 = -144, r12
+	  adds r3 = -128, r12
+	}
+	{ .mii
+	  adds r12 = -160, r12
+	  mov loc1 = b0
+	  mov out2 = b0		/* needed by fixup_profile */
+	  ;;
+	}
+	{ .mmi
+	  stf.spill [r2] = f8, 32
+	  stf.spill [r3] = f9, 32
+	  mov out0 = r16
+	  ;;
+	}
+	{ .mmi
+	  stf.spill [r2] = f10, 32
+	  stf.spill [r3] = f11, 32
+	  shl out1 = r15, 4
+	  ;;
+	}
+	{ .mmi
+	  stf.spill [r2] = f12, 32
+	  stf.spill [r3] = f13, 32
+	  shladd out1 = r15, 3, out1
+	  ;;
+	}
+	{ .mmb
+	  stf.spill [r2] = f14
+	  stf.spill [r3] = f15
+	  br.call.sptk.many b0 = " #fixup_name "#
+	}
+	{ .mii
+	  ld8 r9 = [ret0], 8
+	  adds r2 = 16, r12
+	  adds r3 = 32, r12
+	  ;;
+	}
+	{ .mmi
+	  ldf.fill f8 = [r2], 32
+	  ldf.fill f9 = [r3], 32
+	  mov b0 = loc1
+	  ;;
+	}
+	{ .mmi
+	  ldf.fill f10 = [r2], 32
+	  ldf.fill f11 = [r3], 32
+	  mov b6 = r9
+	  ;;
+	}
+	{ .mmi
+	  ldf.fill f12 = [r2], 32
+	  ldf.fill f13 = [r3], 32
+	  mov ar.pfs = loc0
+	  ;;
+	}
+	{ .mmi
+	  ldf.fill f14 = [r2], 32
+	  ldf.fill f15 = [r3], 32
+	  adds r12 = 160, r12
+	  ;;
+	}
+	/* An alloc is needed for the break system call to work.
+	   We don't care about the old value of the pfs register.  */
+	{ .mmb
+	  alloc r2 = ar.pfs, 0, 0, 8, 0
+	  ld8 gp = [ret0]
+	  br.sptk.many b6
+	  ;;
+	}
+	.endp " #tramp_name "#")
+
+#ifndef PROF
+#define ELF_MACHINE_RUNTIME_TRAMPOLINE 				\
+  TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup);		\
+  TRAMPOLINE_TEMPLATE (_dl_runtime_profile, profile_fixup);
+#else
+#define ELF_MACHINE_RUNTIME_TRAMPOLINE				\
+  TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup);		\
+  strong_alias (_dl_runtime_resolve, _dl_runtime_profile);
+#endif
+
+
+/* Initial entry point code for the dynamic linker.
+   The C function `_dl_start' is the real entry point;
+   its return value is the user program's entry point.  */
+
+#define RTLD_START asm ("\
+.text
+	.global _start#
+	.proc _start#
+_start:
+0:	{ .mii
+	  alloc loc0 = ar.pfs, 0, 3, 4, 0
+	  mov r2 = ip
+	  addl r3 = @gprel(0b), r0
+	  ;;
+	}
+	{ .mlx
+	  /* Calculate the GP, and save a copy in loc1.  */
+	  sub gp = r2, r3
+	  movl r8 = 0x9804c0270033f
+	  ;;
+	}
+	{ .mii
+	  mov ar.fpsr = r8
+	  sub loc1 = r2, r3
+	  /* _dl_start wants a pointer to the pointer to the arg block
+	     and the arg block starts with an integer, thus the magic 16.  */
+	  adds out0 = 16, sp
+	}
+	{ .bbb
+	  br.call.sptk.many b0 = _dl_start#
+	  ;;
+	}
+	.endp _start#
+	/* FALLTHRU */
+	.global _dl_start_user#
+	.proc _dl_start_user#
+_dl_start_user:
+	{ .mii
+	  /* Save the pointer to the user entry point fptr in loc2.  */
+	  mov loc2 = ret0
+	  /* Store the highest stack address.  */
+	  addl r2 = @ltoff(__libc_stack_end#), gp
+	  addl r3 = @gprel(_dl_skip_args), gp
+	  ;;
+	}
+	{ .mmi
+	  ld8 r2 = [r2]
+	  ld4 r3 = [r3]
+	  adds r11 = 24, sp	/* Load the address of argv. */
+	  ;;
+	}
+	{ .mii
+	  st8 [r2] = sp
+	  adds r10 = 16, sp	/* Load the address of argc. */
+	  mov out2 = r11
+	  ;;
+	  /* See if we were run as a command with the executable file
+	     name as an extra leading argument.  If so, adjust the argv
+	     pointer to skip _dl_skip_args words.
+	     Note that _dl_skip_args is an integer, not a long - Jes
+
+	     The stack pointer has to be 16 byte aligned. We cannot simply
+	     addjust the stack pointer. We have to move the whole argv and
+	     envp. H.J.  */
+	}
+	{ .mmi
+	  ld8 out1 = [r10]	/* is argc actually stored as a long
+				   or as an int? */
+	  ;;
+	  sub out1 = out1, r3	/* Get the new argc. */
+	  shladd r15 = r3, 3, r11 /* The address of the argv we move */
+	  ;;
+	}
+	/* ??? Could probably merge these two loops into 3 bundles.
+	   using predication to control which set of copies we're on.  */
+1:	/* Copy argv. */
+	{ .mfi
+	  ld8 r16 = [r15], 8	/* Load the value in the old argv. */
+	  ;;
+	}
+	{ .mib
+	  st8 [r11] = r16, 8	/* Store it in the new argv. */
+	  cmp.ne p6, p7 = 0, r16
+(p6)	  br.cond.dptk.few 1b
+	  ;;
+	}
+	{ .mib
+	  mov out3 = r11
+	  addl out0 = @ltoff(_dl_loaded), gp
+	}
+1:	/* Copy env. */
+	{ .mfi
+	  ld8 r16 = [r15], 8	/* Load the value in the old env. */
+	  ;;
+	}
+	{ .mib
+	  st8 [r11] = r16, 8	/* Store it in the new env. */
+	  cmp.ne p6, p7 = 0, r16
+(p6)	  br.cond.dptk.few 1b
+	  ;;
+	}
+	{ .mmb
+	  st8 [r10] = out1		/* Record the new argc. */
+	  ld8 out0 = [out0]
+	}
+	{ .mfb
+	  ld8 out0 = [out0]		/* get the linkmap */
+	  br.call.sptk.many b0 = _dl_init#
+	  ;;
+	}
+	/* Pass our finializer function to the user,
+	   and jump to the user's entry point.  */
+	{ .mmi
+	  ld8 r3 = [loc2], 8
+	  mov b0 = r0
+	}
+	{ .mmi
+	  addl ret0 = @ltoff(@fptr(_dl_fini#)), gp
+	  ;;
+	  mov b6 = r3
+	}
+	{ .mmi
+	  ld8 ret0 = [ret0]
+	  ld8 gp = [loc2]
+	  mov ar.pfs = loc0
+	  ;;
+	}
+	{ .mfb
+	  br.sptk.many b6
+	  ;;
+	}
+	.endp _dl_start_user#
+.previous");
+
+
+#ifndef RTLD_START_SPECIAL_INIT
+#define RTLD_START_SPECIAL_INIT /* nothing */
+#endif
+
+/* Nonzero iff TYPE describes relocation of a PLT entry, so
+   PLT entries should not be allowed to define the value.  */
+/* ??? Ignore IPLTMSB for now.  */
+#define elf_machine_lookup_noplt_p(type) ((type) == R_IA64_IPLTLSB)
+
+/* Nonzero iff TYPE should not be allowed to resolve to one of
+   the main executable's symbols, as for a COPY reloc, which we don't use.  */
+#define elf_machine_lookup_noexec_p(type)  (0)
+
+/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries.  */
+#define ELF_MACHINE_JMP_SLOT	 R_IA64_IPLTLSB
+
+/* According to the IA-64 specific documentation, Rela is always used.  */
+#define ELF_MACHINE_NO_REL 1
+
+/* Since ia64's stack has to be 16byte aligned, we cannot arbitrarily
+   move the stack pointer. */
+#define ELF_MACHINE_FIXED_STACK 1
+
+/* Return the address of the entry point. */
+extern ElfW(Addr) _dl_start_address (const struct link_map *map,
+				     ElfW(Addr) start);
+
+#define ELF_MACHINE_START_ADDRESS(map, start) \
+  _dl_start_address ((map), (start))
+
+#define elf_machine_profile_fixup_plt(l, reloc, rel_addr, value) \
+  elf_machine_fixup_plt ((l), (reloc), (rel_addr), (value))
+
+#define elf_machine_profile_plt(reloc_addr) ((Elf64_Addr) (reloc_addr))
+
+/* Fixup a PLT entry to bounce directly to the function at VALUE.  */
+static inline Elf64_Addr
+elf_machine_fixup_plt (struct link_map *l, lookup_t t,
+		       const Elf64_Rela *reloc,
+		       Elf64_Addr *reloc_addr, Elf64_Addr value)
+{
+  /* l is the link_map for the caller, t is the link_map for the object
+   * being called */
+  /* got has already been relocated in elf_get_dynamic_info() */
+  reloc_addr[1] = t->l_info[DT_PLTGOT]->d_un.d_ptr;
+  reloc_addr[0] = value;
+  return (Elf64_Addr) reloc_addr;
+}
+
+/* Return the final value of a plt relocation.  */
+static inline Elf64_Addr
+elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc,
+		       Elf64_Addr value)
+{
+  /* No need to handle rel vs rela since IA64 is rela only */
+  return value + reloc->r_addend;
+}
+
+#endif /* !dl_machine_h */
+
+#ifdef RESOLVE_MAP
+
+#define R_IA64_TYPE(R)	 ((R) & -8)
+#define R_IA64_FORMAT(R) ((R) & 7)
+
+#define R_IA64_FORMAT_32MSB	4
+#define R_IA64_FORMAT_32LSB	5
+#define R_IA64_FORMAT_64MSB	6
+#define R_IA64_FORMAT_64LSB	7
+
+
+/* Perform the relocation specified by RELOC and SYM (which is fully
+   resolved).  MAP is the object containing the reloc.  */
+static inline void
+elf_machine_rela (struct link_map *map,
+		  const Elf64_Rela *reloc,
+		  const Elf64_Sym *sym,
+		  const struct r_found_version *version,
+		  Elf64_Addr *const reloc_addr)
+{
+  unsigned long const r_type = ELF64_R_TYPE (reloc->r_info);
+  Elf64_Addr value;
+
+#ifndef RTLD_BOOTSTRAP
+  /* This is defined in rtld.c, but nowhere in the static libc.a; make the
+     reference weak so static programs can still link.  This declaration
+     cannot be done when compiling rtld.c (i.e.  #ifdef RTLD_BOOTSTRAP)
+     because rtld.c contains the common defn for _dl_rtld_map, which is
+     incompatible with a weak decl in the same file.  */
+  weak_extern (_dl_rtld_map);
+#endif
+
+  /* We cannot use a switch here because we cannot locate the switch
+     jump table until we've self-relocated.  */
+
+  if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_REL64LSB))
+    {
+      value = *reloc_addr;
+#ifndef RTLD_BOOTSTRAP
+      /* Already done in dynamic linker.  */
+      if (map != &_dl_rtld_map)
+#endif
+        value += map->l_addr;
+    }
+  else if (r_type == R_IA64_NONE)
+    return;
+  else
+    {
+      struct link_map *sym_map;
+
+      /*
+       * RESOLVE_MAP() will return NULL if it fail to locate the symbol
+       */
+      if ((sym_map = RESOLVE_MAP (&sym, version, r_type)))
+        {
+	  value = sym ? sym_map->l_addr + sym->st_value : 0;
+	  value += reloc->r_addend;
+
+	  if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_DIR64LSB))
+	    ;/* No adjustment.  */
+	  else if (r_type == R_IA64_IPLTLSB)
+	    {
+	      elf_machine_fixup_plt (NULL, sym_map, reloc, reloc_addr, value);
+	      return;
+	    }
+	  else if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_FPTR64LSB))
+#ifndef RTLD_BOOTSTRAP
+	    value = __ia64_make_fptr (sym_map, value, &__fptr_root, NULL);
+#else
+	  {
+	    struct ia64_fptr *p_boot_ldso_fptr;
+	    struct ia64_fptr **p_fptr_root;
+	    int *p_fptr_count;
+
+	    /* Special care must be taken to address these variables
+	       during bootstrap.  Further, since we don't know exactly
+	       when __fptr_next will be relocated, we index directly
+	       off __boot_ldso_fptr.  */
+	    asm ("addl %0 = @gprel(__boot_ldso_fptr#), gp\n\t"
+		 "addl %1 = @gprel(__fptr_root#), gp\n\t"
+		 "addl %2 = @gprel(__fptr_count#), gp"
+		 : "=r"(p_boot_ldso_fptr),
+	         "=r"(p_fptr_root),
+	         "=r"(p_fptr_count));
+
+	    /*
+	     * Go from the top - __ia64_make_fptr goes from the bottom,
+	     * this way we will never clash.
+	     */
+	    value = __ia64_make_fptr (sym_map, value, p_fptr_root,
+				      &p_boot_ldso_fptr[--*p_fptr_count]);
+	  }
+#endif
+	  else if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_PCREL64LSB))
+	    value -= (Elf64_Addr)reloc_addr & -16;
+	  else
+	    assert (! "unexpected dynamic reloc type");
+	}
+      else
+	value = 0;
+    }
+
+  /* ??? Ignore MSB and Instruction format for now.  */
+  if (R_IA64_FORMAT (r_type) == R_IA64_FORMAT_64LSB)
+    *reloc_addr = value;
+  else if (R_IA64_FORMAT (r_type) == R_IA64_FORMAT_32LSB)
+    *(int *)reloc_addr = value;
+  else if (r_type == R_IA64_IPLTLSB)
+    {
+      reloc_addr[0] = 0;
+      reloc_addr[1] = 0;
+    }
+  else
+    assert (! "unexpected dynamic reloc format");
+}
+
+
+/* Perform a RELATIVE reloc on the .got entry that transfers to the .plt.  */
+static inline void
+elf_machine_lazy_rel (struct link_map *map,
+		      Elf64_Addr l_addr, const Elf64_Rela *reloc)
+{
+  Elf64_Addr * const reloc_addr = (void *)(l_addr + reloc->r_offset);
+  unsigned long const r_type = ELF64_R_TYPE (reloc->r_info);
+
+  if (r_type == R_IA64_IPLTLSB)
+    {
+      reloc_addr[0] += l_addr;
+      reloc_addr[1] += l_addr;
+    }
+  else if (r_type == R_IA64_NONE)
+    return;
+  else
+    assert (! "unexpected PLT reloc type");
+}
+
+#endif /* RESOLVE_MAP */
diff --git a/sysdeps/ia64/dl-symaddr.c b/sysdeps/ia64/dl-symaddr.c
new file mode 100644
index 0000000..bc3301c
--- /dev/null
+++ b/sysdeps/ia64/dl-symaddr.c
@@ -0,0 +1,39 @@
+/* Get the symbol address.  IA-64 version.
+   Copyright (C) 1999, 2000 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <ldsodefs.h>
+#include <dl-machine.h>
+
+void *
+_dl_symbol_address (const struct link_map *map, const ElfW(Sym) *ref)
+{
+  Elf64_Addr value = (map ? map->l_addr : 0) + ref->st_value;
+
+  /* On ia64, we have to return the pointer to function descriptor. */
+  if (ELFW(ST_TYPE) (ref->st_info) == STT_FUNC)
+    return (void *) __ia64_make_fptr (map, value, &__fptr_root, NULL);
+  else
+    return (void *) value;
+}
+
+ElfW(Addr)
+_dl_start_address (const struct link_map *map, ElfW(Addr) start)
+{
+  return __ia64_make_fptr (map, start, &__fptr_root, NULL);
+}