port GDB to ia64-hpux (native).

ChangeLog:

        * configure.ac: Remove readline, mmalloc, and gdb from noconfigdirs
        for ia64-hpux.
        * configure: Regenerate.

gdb/ChangeLog:

        * config/ia64/hpux.mh, ia64-hpux-nat.c, ia64-hpux-tdep.c,
        ia64-hpux-tdep.h, solib-ia64-hpux.c, solib-ia64-hpux.h: New files.

        * configure.host: Add handling for ia64-hpux hosts.  Add associated
        floatformats.
        * configure.tgt: Add handling for ia64-hpux targets.
        * Makefile.in (ALL_64_TARGET_OBS): Add ia64-hpux-tdep.o.
        (HFILES_NO_SRCDIR): Add ia64-hpux-tdep.h.
        (ALLDEPFILES): Add ia64-hpux-nat.c ia64-hpux-tdep.c.

1 files changed, 700 insertions, 0 deletions

diff --git a/gdb/solib-ia64-hpux.c b/gdb/solib-ia64-hpux.c
new file mode 100644
index 0000000..01d44a9
--- /dev/null
+++ b/gdb/solib-ia64-hpux.c
@@ -0,0 +1,700 @@
+/* Copyright (C) 2010 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program 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 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+#include "ia64-tdep.h"
+#include "ia64-hpux-tdep.h"
+#include "solib-ia64-hpux.h"
+#include "solist.h"
+#include "solib.h"
+#include "target.h"
+#include "gdbtypes.h"
+#include "inferior.h"
+#include "gdbcore.h"
+#include "regcache.h"
+#include "opcode/ia64.h"
+#include "symfile.h"
+#include "objfiles.h"
+#include "elf-bfd.h"
+#include "exceptions.h"
+
+/* Need to define the following macro in order to get the complete
+   load_module_desc struct definition in dlfcn.h  Otherwise, it doesn't
+   match the size of the struct the loader is providing us during load
+   events.  */
+#define _LOAD_MODULE_DESC_EXT
+
+#include <sys/ttrace.h>
+#include <dlfcn.h>
+#include <elf.h>
+#include <service_mgr.h>
+
+/* The following is to have access to the definition of type load_info_t.  */
+#include <crt0.h>
+
+/* The r32 pseudo-register number.
+
+   Like all stacked registers, r32 is treated as a pseudo-register,
+   because it is not always available for read/write via the ttrace
+   interface.  */
+/* This is a bit of a hack, as we duplicate something hidden inside
+   ia64-tdep.c, but oh well...  */
+#define IA64_R32_PSEUDO_REGNUM (IA64_NAT127_REGNUM + 2)
+
+/* Our struct so_list private data structure.  */
+
+struct lm_info
+{
+  /* The shared library module descriptor.  We extract this structure
+     from the loader at the time the shared library gets mapped.  */
+  struct load_module_desc module_desc;
+
+  /* The text segment address as defined in the shared library object
+     (this is not the address where this segment got loaded).  This
+     field is initially set to zero, and computed lazily.  */
+  CORE_ADDR text_start;
+
+  /* The data segment address as defined in the shared library object
+     (this is not the address where this segment got loaded).  This
+     field is initially set to zero, and computed lazily.  */
+  CORE_ADDR data_start;
+};
+
+/* The list of shared libraries currently mapped by the inferior.  */
+
+static struct so_list *so_list_head = NULL;
+
+/* Create a new so_list element.  The result should be deallocated
+   when no longer in use.  */
+
+static struct so_list *
+new_so_list (char *so_name, struct load_module_desc module_desc)
+{
+  struct so_list *new_so;
+
+  new_so = (struct so_list *) XZALLOC (struct so_list);
+  new_so->lm_info = (struct lm_info *) XZALLOC (struct lm_info);
+  new_so->lm_info->module_desc = module_desc;
+
+  strncpy (new_so->so_name, so_name, SO_NAME_MAX_PATH_SIZE - 1);
+  new_so->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
+  strcpy (new_so->so_original_name, new_so->so_name);
+
+  return new_so;
+}
+
+/* Return non-zero if the instruction at the current PC is a breakpoint
+   part of the dynamic loading process.
+
+   We identify such instructions by checking that the instruction at
+   the current pc is a break insn where no software breakpoint has been
+   inserted by us.  We also verify that the operands have specific
+   known values, to be extra certain.
+
+   PTID is the ptid of the thread that should be checked, but this
+   function also assumes that inferior_ptid is already equal to PTID.
+   Ideally, we would like to avoid the requirement on inferior_ptid,
+   but many routines still use the inferior_ptid global to access
+   the relevant thread's register and memory.  We still have the ptid
+   as parameter to be able to pass it to the routines that do take a ptid
+   - that way we avoid increasing explicit uses of the inferior_ptid
+   global.  */
+
+static int
+ia64_hpux_at_dld_breakpoint_1_p (ptid_t ptid)
+{
+  struct regcache *regcache = get_thread_regcache (ptid);
+  CORE_ADDR pc = regcache_read_pc (regcache);
+  struct address_space *aspace = get_regcache_aspace (regcache);
+  ia64_insn t0, t1, slot[3], template, insn;
+  int slotnum;
+  bfd_byte bundle[16];
+
+  /* If this is a regular breakpoint, then it can not be a dld one.  */
+  if (breakpoint_inserted_here_p (aspace, pc))
+    return 0;
+
+  slotnum = ((long) pc) & 0xf;
+  if (slotnum > 2)
+    internal_error (__FILE__, __LINE__,
+		    "invalid slot (%d) for address %s", slotnum,
+		    paddress (get_regcache_arch (regcache), pc));
+
+  pc -= (pc & 0xf);
+  read_memory (pc, bundle, sizeof (bundle));
+
+  /* bundles are always in little-endian byte order */
+  t0 = bfd_getl64 (bundle);
+  t1 = bfd_getl64 (bundle + 8);
+  template = (t0 >> 1) & 0xf;
+  slot[0] = (t0 >>  5) & 0x1ffffffffffLL;
+  slot[1] = ((t0 >> 46) & 0x3ffff) | ((t1 & 0x7fffff) << 18);
+  slot[2] = (t1 >> 23) & 0x1ffffffffffLL;
+
+  if (template == 2 && slotnum == 1)
+    {
+      /* skip L slot in MLI template: */
+      slotnum = 2;
+    }
+
+  insn = slot[slotnum];
+
+  return (insn == 0x1c0c9c0       /* break.i 0x070327 */
+          || insn == 0x3c0c9c0);  /* break.i 0x0f0327 */
+}
+
+/* Same as ia64_hpux_at_dld_breakpoint_1_p above, with the following
+   differences: It temporarily sets inferior_ptid to PTID, and also
+   contains any exception being raised.  */
+
+int
+ia64_hpux_at_dld_breakpoint_p (ptid_t ptid)
+{
+  struct gdb_exception e;
+  ptid_t saved_ptid = inferior_ptid;
+  int result = 0;
+
+  inferior_ptid = ptid;
+  TRY_CATCH (e, RETURN_MASK_ALL)
+    {
+      result = ia64_hpux_at_dld_breakpoint_1_p (ptid);
+    }
+  inferior_ptid = saved_ptid;
+  if (e.reason < 0)
+    warning (_("error while checking for dld breakpoint: %s"), e.message);
+
+  return result;
+}
+
+/* Handler for library load event: Read the information provided by
+   the loader, and then use it to read the shared library symbols.  */
+
+static void
+ia64_hpux_handle_load_event (struct regcache *regcache)
+{
+  CORE_ADDR module_desc_addr;
+  ULONGEST module_desc_size;
+  CORE_ADDR so_path_addr;
+  char so_path[MAXPATHLEN];
+  struct load_module_desc module_desc;
+  struct so_list *new_so;
+
+  /* Extract the data provided by the loader as follow:
+       - r33: Address of load_module_desc structure
+       - r34: size of struct load_module_desc
+       - r35: Address of string holding shared library path
+   */
+  regcache_cooked_read_unsigned (regcache, IA64_R32_PSEUDO_REGNUM + 1,
+                                 &module_desc_addr);
+  regcache_cooked_read_unsigned (regcache, IA64_R32_PSEUDO_REGNUM + 2,
+                                 &module_desc_size);
+  regcache_cooked_read_unsigned (regcache, IA64_R32_PSEUDO_REGNUM + 3,
+                                 &so_path_addr);
+
+  if (module_desc_size != sizeof (struct load_module_desc))
+    warning (_("load_module_desc size (%ld) != size returned by kernel (%s)"),
+             sizeof (struct load_module_desc),
+	     pulongest (module_desc_size));
+
+  read_memory_string (so_path_addr, so_path, MAXPATHLEN);
+  read_memory (module_desc_addr, (gdb_byte *) &module_desc,
+	       sizeof (module_desc));
+
+  /* Create a new so_list element and insert it at the start of our
+     so_list_head (we insert at the start of the list only because
+     it is less work compared to inserting it elsewhere).  */
+  new_so = new_so_list (so_path, module_desc);
+  new_so->next = so_list_head;
+  so_list_head = new_so;
+}
+
+/* Update the value of the PC to point to the begining of the next
+   instruction bundle.  */
+
+static void
+ia64_hpux_move_pc_to_next_bundle (struct regcache *regcache)
+{
+  CORE_ADDR pc = regcache_read_pc (regcache);
+
+  pc -= pc & 0xf;
+  pc += 16;
+  ia64_write_pc (regcache, pc);
+}
+
+/* Handle loader events.
+
+   PTID is the ptid of the thread corresponding to the event being
+   handled.  Similarly to ia64_hpux_at_dld_breakpoint_1_p, this
+   function assumes that inferior_ptid is set to PTID.  */
+
+static void
+ia64_hpux_handle_dld_breakpoint_1 (ptid_t ptid)
+{
+  struct regcache *regcache = get_thread_regcache (ptid);
+  ULONGEST arg0;
+
+  /* The type of event is provided by the loaded via r32.  */
+  regcache_cooked_read_unsigned (regcache, IA64_R32_PSEUDO_REGNUM, &arg0);
+  switch (arg0)
+    {
+      case BREAK_DE_SVC_LOADED:
+	/* Currently, the only service loads are uld and dld,
+	   so we shouldn't need to do anything.  Just ignore.  */
+	break;
+      case BREAK_DE_LIB_LOADED:
+	ia64_hpux_handle_load_event (regcache);
+	solib_add (NULL, 0, &current_target, auto_solib_add);
+	break;
+      case BREAK_DE_LIB_UNLOADED:
+      case BREAK_DE_LOAD_COMPLETE:
+      case BREAK_DE_BOR:
+	/* Ignore for now.  */
+	break;
+    }
+
+  /* Now that we have handled the event, we can move the PC to
+     the next instruction bundle, past the break instruction.  */
+  ia64_hpux_move_pc_to_next_bundle (regcache);
+}
+
+/* Same as ia64_hpux_handle_dld_breakpoint_1 above, with the following
+   differences: This function temporarily sets inferior_ptid to PTID,
+   and also contains any exception.  */
+
+void
+ia64_hpux_handle_dld_breakpoint (ptid_t ptid)
+{
+  struct gdb_exception e;
+  ptid_t saved_ptid = inferior_ptid;
+
+  inferior_ptid = ptid;
+  TRY_CATCH (e, RETURN_MASK_ALL)
+    {
+      ia64_hpux_handle_dld_breakpoint_1 (ptid);
+    }
+  inferior_ptid = saved_ptid;
+  if (e.reason < 0)
+    warning (_("error detected while handling dld breakpoint: %s"), e.message);
+}
+
+/* Find the address of the code and data segments in ABFD, and update
+   TEXT_START and DATA_START accordingly.  */
+
+static void
+ia64_hpux_find_start_vma (bfd *abfd, CORE_ADDR *text_start,
+                          CORE_ADDR *data_start)
+{
+  Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
+  Elf64_Phdr phdr;
+  int i;
+
+  *text_start = 0;
+  *data_start = 0;
+
+  if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) == -1)
+    error (_("invalid program header offset in %s"), abfd->filename);
+
+  for (i = 0; i < i_ehdrp->e_phnum; i++)
+    {
+      if (bfd_bread ((PTR) & phdr, sizeof (phdr), abfd) != sizeof (phdr))
+        error (_("failed to read segment %d in %s"), i, abfd->filename);
+
+      if (phdr.p_flags & PF_X
+          && (*text_start == 0 || phdr.p_vaddr < *text_start))
+        *text_start = phdr.p_vaddr;
+
+      if (phdr.p_flags & PF_W
+          && (*data_start == 0 || phdr.p_vaddr < *data_start))
+        *data_start = phdr.p_vaddr;
+    }
+}
+
+/* The "relocate_section_addresses" target_so_ops routine for ia64-hpux.  */
+
+static void
+ia64_hpux_relocate_section_addresses (struct so_list *so,
+				      struct target_section *sec)
+{
+  CORE_ADDR offset = 0;
+
+  /* If we haven't computed the text & data segment addresses, do so now.
+     We do this here, because we now have direct access to the associated
+     bfd, whereas we would have had to open our own if we wanted to do it
+     while processing the library-load event.  */
+  if (so->lm_info->text_start == 0 && so->lm_info->data_start == 0)
+    ia64_hpux_find_start_vma (sec->bfd, &so->lm_info->text_start,
+			      &so->lm_info->data_start);
+
+  /* Determine the relocation offset based on which segment
+     the section belongs to.  */
+  if ((so->lm_info->text_start < so->lm_info->data_start
+       && sec->addr < so->lm_info->data_start)
+      || (so->lm_info->text_start > so->lm_info->data_start
+          && sec->addr >= so->lm_info->text_start))
+    offset = so->lm_info->module_desc.text_base - so->lm_info->text_start;
+  else if ((so->lm_info->text_start < so->lm_info->data_start
+            && sec->addr >= so->lm_info->data_start)
+           || (so->lm_info->text_start > so->lm_info->data_start
+	       && sec->addr < so->lm_info->text_start))
+    offset = so->lm_info->module_desc.data_base - so->lm_info->data_start;
+
+  /* And now apply the relocation.  */
+  sec->addr += offset;
+  sec->endaddr += offset;
+
+  /* Best effort to set addr_high/addr_low.  This is used only by
+     'info sharedlibrary'.  */
+  if (so->addr_low == 0 || sec->addr < so->addr_low)
+    so->addr_low = sec->addr;
+
+  if (so->addr_high == 0 || sec->endaddr > so->addr_high)
+    so->addr_high = sec->endaddr;
+}
+
+/* The "free_so" target_so_ops routine for ia64-hpux.  */
+
+static void
+ia64_hpux_free_so (struct so_list *so)
+{
+  xfree (so->lm_info);
+}
+
+/* The "clear_solib" target_so_ops routine for ia64-hpux.  */
+
+static void
+ia64_hpux_clear_solib (void)
+{
+  struct so_list *so;
+
+  while (so_list_head != NULL)
+    {
+      so = so_list_head;
+      so_list_head = so_list_head->next;
+
+      ia64_hpux_free_so (so);
+      xfree (so);
+    }
+}
+
+/* Assuming the inferior just stopped on an EXEC event, return
+   the address of the load_info_t structure.  */
+
+static CORE_ADDR
+ia64_hpux_get_load_info_addr (void)
+{
+  struct type *data_ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
+  CORE_ADDR addr;
+  int status;
+
+  /* The address of the load_info_t structure is stored in the 4th
+     argument passed to the initial thread of the process (in other
+     words, in argv[3]).  So get the address of these arguments,
+     and extract the 4th one.  */
+  status = ttrace (TT_PROC_GET_ARGS, ptid_get_pid (inferior_ptid),
+		   0, (uintptr_t) &addr, sizeof (CORE_ADDR), 0);
+  if (status == -1 && errno)
+    perror_with_name (_("Unable to get argument list"));
+  return (read_memory_typed_address (addr + 3 * 8, data_ptr_type));
+}
+
+/* A structure used to aggregate some information extracted from
+   the dynamic section of the main executable.  */
+
+struct dld_info
+{
+  long long dld_flags;
+  CORE_ADDR load_map;
+};
+
+/* Scan the ".dynamic" section referenced by ABFD and DYN_SECT,
+   and extract the information needed to fill in INFO.  */
+
+static void
+ia64_hpux_read_dynamic_info (struct gdbarch *gdbarch, bfd *abfd,
+			     asection *dyn_sect, struct dld_info *info)
+{
+  int sect_size;
+  char *buf;
+  char *buf_end;
+
+  /* Make sure that info always has initialized data, even if we fail
+     to read the syn_sect section.  */
+  memset (info, 0, sizeof (struct dld_info));
+
+  sect_size = bfd_section_size (abfd, dyn_sect);
+  buf = alloca (sect_size);
+  buf_end = buf + sect_size;
+
+  if (bfd_seek (abfd, dyn_sect->filepos, SEEK_SET) != 0
+      || bfd_bread (buf, sect_size, abfd) != sect_size)
+    error (_("failed to read contents of .dynamic section"));
+
+  for (; buf < buf_end; buf += sizeof (Elf64_Dyn))
+    {
+      Elf64_Dyn *dynp = (Elf64_Dyn *) buf;
+      Elf64_Sxword d_tag;
+
+      d_tag = bfd_h_get_64 (abfd, &dynp->d_tag);
+      switch (d_tag)
+        {
+          case DT_HP_DLD_FLAGS:
+            info->dld_flags = bfd_h_get_64 (abfd, &dynp->d_un);
+            break;
+
+          case DT_HP_LOAD_MAP:
+            {
+              CORE_ADDR load_map_addr = bfd_h_get_64 (abfd, &dynp->d_un.d_ptr);
+
+              if (target_read_memory (load_map_addr, (char *) &info->load_map,
+                                      sizeof (info->load_map)) != 0)
+		error (_("failed to read load map at %s"),
+		       paddress (gdbarch, load_map_addr));
+            }
+            break;
+        }
+    }
+}
+
+/* Wrapper around target_read_memory used with libdl.  */
+
+static void *
+ia64_hpux_read_tgt_mem (void *buffer, uint64_t ptr, size_t bufsiz, int ident)
+{
+  if (target_read_memory (ptr, (gdb_byte *) buffer, bufsiz) != 0)
+    return 0;
+  else
+    return buffer;
+}
+
+/* Create a new so_list object for a shared library, and store that
+   new so_list object in our SO_LIST_HEAD list.
+
+   SO_INDEX is an index specifying the placement of the loaded shared
+   library in the dynamic loader's search list.  Normally, this index
+   is strictly positive, but an index of -1 refers to the loader itself.
+
+   Return nonzero if the so_list object could be created.  A null
+   return value with a positive SO_INDEX normally means that there are
+   no more entries in the dynamic loader's search list at SO_INDEX or
+   beyond.  */
+
+static int
+ia64_hpux_add_so_from_dld_info (struct dld_info info, int so_index)
+{
+  struct load_module_desc module_desc;
+  uint64_t so_handle;
+  char *so_path;
+  struct so_list *so;
+
+  so_handle = dlgetmodinfo (so_index, &module_desc, sizeof (module_desc),
+			    ia64_hpux_read_tgt_mem, 0, info.load_map);
+
+  if (so_handle == 0)
+    /* No such entry.  We probably reached the end of the list.  */
+    return 0;
+
+  so_path = dlgetname (&module_desc, sizeof (module_desc),
+                       ia64_hpux_read_tgt_mem, 0, info.load_map);
+  if (so_path == NULL)
+    {
+      /* Should never happen, but let's not crash if it does.  */
+      warning (_("unable to get shared library name, symbols not loaded"));
+      return 0;
+    }
+
+  /* Create a new so_list and insert it at the start of our list.
+     The order is not extremely important, but it's less work to do so
+     at the end of the list.  */
+  so = new_so_list (so_path, module_desc);
+  so->next = so_list_head;
+  so_list_head = so;
+
+  return 1;
+}
+
+/* Assuming we just attached to a process, update our list of shared
+   libraries (SO_LIST_HEAD) as well as GDB's list.  */
+
+static void
+ia64_hpux_solib_add_after_attach (void)
+{
+  bfd *abfd;
+  asection *dyn_sect;
+  struct dld_info info;
+  int i;
+
+  if (symfile_objfile == NULL)
+    return;
+
+  abfd = symfile_objfile->obfd;
+  dyn_sect = bfd_get_section_by_name (abfd, ".dynamic");
+
+  if (dyn_sect == NULL || bfd_section_size (abfd, dyn_sect) == 0)
+    return;
+
+  ia64_hpux_read_dynamic_info (get_objfile_arch (symfile_objfile), abfd,
+			       dyn_sect, &info);
+
+  if ((info.dld_flags & DT_HP_DEBUG_PRIVATE) == 0)
+    {
+      warning (_(
+"The shared libraries were not privately mapped; setting a breakpoint\n\
+in a shared library will not work until you rerun the program.\n\
+Use the following command to enable debugging of shared libraries.\n\
+chatr +dbg enable a.out"));
+    }
+
+  /* Read the symbols of the dynamic loader (dld.so).  */
+  ia64_hpux_add_so_from_dld_info (info, -1);
+
+  /* Read the symbols of all the other shared libraries.  */
+  for (i = 1; ; i++)
+    if (!ia64_hpux_add_so_from_dld_info (info, i))
+      break;  /* End of list.  */
+
+  /* Resync the library list at the core level.  */
+  solib_add (NULL, 1, &current_target, auto_solib_add);
+}
+
+/* The "create_inferior_hook" target_so_ops routine for ia64-hpux.  */
+
+static void
+ia64_hpux_solib_create_inferior_hook (int from_tty)
+{
+  CORE_ADDR load_info_addr;
+  load_info_t load_info;
+
+  /* Initially, we were thinking about adding a check that the program
+     (accessible through symfile_objfile) was linked against some shared
+     libraries, by searching for a ".dynamic" section.  However, could
+     this break in the case of a statically linked program that later
+     uses dlopen?  Programs that are fully statically linked are very
+     rare, and we will worry about them when we encounter one that
+     causes trouble.  */
+
+  /* Set the LI_TRACE flag in the load_info_t structure.  This enables
+     notifications when shared libraries are being mapped.  */
+  load_info_addr = ia64_hpux_get_load_info_addr ();
+  read_memory (load_info_addr, (gdb_byte *) &load_info, sizeof (load_info));
+  load_info.li_flags |= LI_TRACE;
+  write_memory (load_info_addr, (gdb_byte *) &load_info, sizeof (load_info));
+
+  /* If we just attached to our process, some shard libraries have
+     already been mapped.  Find which ones they are...  */
+  if (current_inferior ()->attach_flag)
+    ia64_hpux_solib_add_after_attach ();
+}
+
+/* The "special_symbol_handling" target_so_ops routine for ia64-hpux.  */
+
+static void
+ia64_hpux_special_symbol_handling (void)
+{
+  /* Nothing to do.  */
+}
+
+/* The "current_sos" target_so_ops routine for ia64-hpux.  */
+
+static struct so_list *
+ia64_hpux_current_sos (void)
+{
+  /* Return a deep copy of our own list.  */
+  struct so_list *new_head = NULL, *prev_new_so = NULL;
+  struct so_list *our_so;
+
+  for (our_so = so_list_head; our_so != NULL; our_so = our_so->next)
+    {
+      struct so_list *new_so;
+
+      new_so = new_so_list (our_so->so_name, our_so->lm_info->module_desc);
+      if (prev_new_so != NULL)
+        prev_new_so->next = new_so;
+      prev_new_so = new_so;
+      if (new_head == NULL)
+        new_head = new_so;
+    }
+
+  return new_head;
+}
+
+/* The "open_symbol_file_object" target_so_ops routine for ia64-hpux.  */
+
+static int
+ia64_hpux_open_symbol_file_object (void *from_ttyp)
+{
+  return 0;
+}
+
+/* The "in_dynsym_resolve_code" target_so_ops routine for ia64-hpux.  */
+
+static int
+ia64_hpux_in_dynsym_resolve_code (CORE_ADDR pc)
+{
+  return 0;
+}
+
+/* If FADDR is the address of a function inside one of the shared
+   libraries, return the shared library linkage address.  */
+
+CORE_ADDR
+ia64_hpux_get_solib_linkage_addr (CORE_ADDR faddr)
+{
+  struct so_list *so = so_list_head;
+
+  while (so != NULL)
+    {
+      struct load_module_desc module_desc = so->lm_info->module_desc;
+
+      if (module_desc.text_base <= faddr
+          && (module_desc.text_base + module_desc.text_size) > faddr)
+        return module_desc.linkage_ptr;
+
+      so = so->next;
+    }
+
+  return 0;
+}
+
+/* Create a new target_so_ops structure suitable for ia64-hpux, and
+   return its address.  */
+
+static struct target_so_ops *
+ia64_hpux_target_so_ops (void)
+{
+  struct target_so_ops *ops = XZALLOC (struct target_so_ops);
+
+  ops->relocate_section_addresses = ia64_hpux_relocate_section_addresses;
+  ops->free_so = ia64_hpux_free_so;
+  ops->clear_solib = ia64_hpux_clear_solib;
+  ops->solib_create_inferior_hook = ia64_hpux_solib_create_inferior_hook;
+  ops->special_symbol_handling = ia64_hpux_special_symbol_handling;
+  ops->current_sos = ia64_hpux_current_sos;
+  ops->open_symbol_file_object = ia64_hpux_open_symbol_file_object;
+  ops->in_dynsym_resolve_code = ia64_hpux_in_dynsym_resolve_code;
+  ops->bfd_open = solib_bfd_open;
+
+  return ops;
+}
+
+/* Prevent warning from -Wmissing-prototypes.  */
+void _initialize_solib_ia64_hpux (void);
+
+void
+_initialize_solib_ia64_hpux (void)
+{
+  ia64_hpux_so_ops = ia64_hpux_target_so_ops ();
+}