X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fsolib-darwin.c;h=1ad781d686bd66bae1447a1ae1aa99433f48458e;hb=74375d182e992778ef8701278c02a742db6be77e;hp=7109eadde370ab1f1758bd1e8a653186ca45bb9a;hpb=f9a062ffb59ebed937221b852eab2abbd43111ed;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/solib-darwin.c b/gdb/solib-darwin.c
index 7109eadde3..1ad781d686 100644
--- a/gdb/solib-darwin.c
+++ b/gdb/solib-darwin.c
@@ -1,6 +1,6 @@
 /* Handle Darwin shared libraries for GDB, the GNU Debugger.
 
-   Copyright (C) 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -30,8 +30,6 @@
 #include "gdbthread.h"
 #include "gdb_bfd.h"
 
-#include "gdb_assert.h"
-
 #include "solist.h"
 #include "solib.h"
 #include "solib-svr4.h"
@@ -40,7 +38,6 @@
 #include "elf-bfd.h"
 #include "exec.h"
 #include "auxv.h"
-#include "exceptions.h"
 #include "mach-o.h"
 #include "mach-o/external.h"
 
@@ -70,29 +67,20 @@ struct gdb_dyld_all_image_infos
 
 /* Current all_image_infos version.  */
 #define DYLD_VERSION_MIN 1
-#define DYLD_VERSION_MAX 12
+#define DYLD_VERSION_MAX 15
 
 /* Per PSPACE specific data.  */
 struct darwin_info
 {
   /* Address of structure dyld_all_image_infos in inferior.  */
-  CORE_ADDR all_image_addr;
+  CORE_ADDR all_image_addr = 0;
 
   /* Gdb copy of dyld_all_info_infos.  */
-  struct gdb_dyld_all_image_infos all_image;
+  struct gdb_dyld_all_image_infos all_image {};
 };
 
 /* Per-program-space data key.  */
-static const struct program_space_data *solib_darwin_pspace_data;
-
-static void
-darwin_pspace_data_cleanup (struct program_space *pspace, void *arg)
-{
-  struct darwin_info *info;
-
-  info = program_space_data (pspace, solib_darwin_pspace_data);
-  xfree (info);
-}
+static program_space_key<darwin_info> solib_darwin_pspace_data;
 
 /* Get the current darwin data.  If none is found yet, add it now.  This
    function always returns a valid object.  */
@@ -102,14 +90,11 @@ get_darwin_info (void)
 {
   struct darwin_info *info;
 
-  info = program_space_data (current_program_space, solib_darwin_pspace_data);
+  info = solib_darwin_pspace_data.get (current_program_space);
   if (info != NULL)
     return info;
 
-  info = XZALLOC (struct darwin_info);
-  set_program_space_data (current_program_space,
-			  solib_darwin_pspace_data, info);
-  return info;
+  return solib_darwin_pspace_data.emplace (current_program_space);
 }
 
 /* Return non-zero if the version in dyld_all_image is known.  */
@@ -127,8 +112,8 @@ static void
 darwin_load_image_infos (struct darwin_info *info)
 {
   gdb_byte buf[24];
-  enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
-  struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
+  enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
+  struct type *ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr;
   int len;
 
   /* If the structure address is not known, don't continue.  */
@@ -137,7 +122,7 @@ darwin_load_image_infos (struct darwin_info *info)
 
   /* The structure has 4 fields: version (4 bytes), count (4 bytes),
      info (pointer) and notifier (pointer).  */
-  len = 4 + 4 + 2 * ptr_type->length;
+  len = 4 + 4 + 2 * TYPE_LENGTH (ptr_type);
   gdb_assert (len <= sizeof (buf));
   memset (&info->all_image, 0, sizeof (info->all_image));
 
@@ -153,29 +138,21 @@ darwin_load_image_infos (struct darwin_info *info)
   info->all_image.count = extract_unsigned_integer (buf + 4, 4, byte_order);
   info->all_image.info = extract_typed_address (buf + 8, ptr_type);
   info->all_image.notifier = extract_typed_address
-    (buf + 8 + ptr_type->length, ptr_type);
+    (buf + 8 + TYPE_LENGTH (ptr_type), ptr_type);
 }
 
 /* Link map info to include in an allocated so_list entry.  */
 
-struct lm_info
+struct lm_info_darwin : public lm_info_base
 {
   /* The target location of lm.  */
-  CORE_ADDR lm_addr;
-};
-
-struct darwin_so_list
-{
-  /* Common field.  */
-  struct so_list sl;
-  /* Darwin specific data.  */
-  struct lm_info li;
+  CORE_ADDR lm_addr = 0;
 };
 
 /* Lookup the value for a specific symbol.  */
 
 static CORE_ADDR
-lookup_symbol_from_bfd (bfd *abfd, char *symname)
+lookup_symbol_from_bfd (bfd *abfd, const char *symname)
 {
   long storage_needed;
   asymbol **symbol_table;
@@ -210,10 +187,10 @@ lookup_symbol_from_bfd (bfd *abfd, char *symname)
 
 /* Return program interpreter string.  */
 
-static gdb_byte *
+static char *
 find_program_interpreter (void)
 {
-  gdb_byte *buf = NULL;
+  char *buf = NULL;
 
   /* If we have an exec_bfd, get the interpreter from the load commands.  */
   if (exec_bfd)
@@ -235,7 +212,7 @@ find_program_interpreter (void)
     Note that darwin-nat.c implements pid_to_exec_file.  */
 
 static int
-open_symbol_file_object (void *from_ttyp)
+open_symbol_file_object (int from_tty)
 {
   return 0;
 }
@@ -245,8 +222,8 @@ open_symbol_file_object (void *from_ttyp)
 static struct so_list *
 darwin_current_sos (void)
 {
-  struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
-  enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
+  struct type *ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr;
+  enum bfd_endian byte_order = type_byte_order (ptr_type);
   int ptr_len = TYPE_LENGTH (ptr_type);
   unsigned int image_info_size;
   struct so_list *head = NULL;
@@ -269,16 +246,13 @@ darwin_current_sos (void)
   for (i = 0; i < info->all_image.count; i++)
     {
       CORE_ADDR iinfo = info->all_image.info + i * image_info_size;
-      char buf[image_info_size];
+      gdb_byte buf[image_info_size];
       CORE_ADDR load_addr;
       CORE_ADDR path_addr;
       struct mach_o_header_external hdr;
       unsigned long hdr_val;
-      char *file_path;
+      gdb::unique_xmalloc_ptr<char> file_path;
       int errcode;
-      struct darwin_so_list *dnew;
-      struct so_list *new;
-      struct cleanup *old_chain;
 
       /* Read image info from inferior.  */
       if (target_read_memory (iinfo, buf, image_info_size))
@@ -288,7 +262,7 @@ darwin_current_sos (void)
       path_addr = extract_typed_address (buf + ptr_len, ptr_type);
 
       /* Read Mach-O header from memory.  */
-      if (target_read_memory (load_addr, (char *) &hdr, sizeof (hdr) - 4))
+      if (target_read_memory (load_addr, (gdb_byte *) &hdr, sizeof (hdr) - 4))
 	break;
       /* Discard wrong magic numbers.  Shouldn't happen.  */
       hdr_val = extract_unsigned_integer
@@ -307,30 +281,114 @@ darwin_current_sos (void)
 	break;
 
       /* Create and fill the new so_list element.  */
-      dnew = XZALLOC (struct darwin_so_list);
-      new = &dnew->sl;
-      old_chain = make_cleanup (xfree, dnew);
+      gdb::unique_xmalloc_ptr<struct so_list> newobj (XCNEW (struct so_list));
 
-      new->lm_info = &dnew->li;
+      lm_info_darwin *li = new lm_info_darwin;
+      newobj->lm_info = li;
 
-      strncpy (new->so_name, file_path, SO_NAME_MAX_PATH_SIZE - 1);
-      new->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
-      strcpy (new->so_original_name, new->so_name);
-      xfree (file_path);
-      new->lm_info->lm_addr = load_addr;
+      strncpy (newobj->so_name, file_path.get (), SO_NAME_MAX_PATH_SIZE - 1);
+      newobj->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
+      strcpy (newobj->so_original_name, newobj->so_name);
+      li->lm_addr = load_addr;
 
       if (head == NULL)
-	head = new;
+	head = newobj.get ();
       else
-	tail->next = new;
-      tail = new;
-
-      discard_cleanups (old_chain);
+	tail->next = newobj.get ();
+      tail = newobj.release ();
     }
 
   return head;
 }
 
+/* Check LOAD_ADDR points to a Mach-O executable header.  Return LOAD_ADDR
+   in case of success, 0 in case of failure.  */
+
+static CORE_ADDR
+darwin_validate_exec_header (CORE_ADDR load_addr)
+{
+  enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
+  struct mach_o_header_external hdr;
+  unsigned long hdr_val;
+
+  /* Read Mach-O header from memory.  */
+  if (target_read_memory (load_addr, (gdb_byte *) &hdr, sizeof (hdr) - 4))
+    return 0;
+
+  /* Discard wrong magic numbers.  Shouldn't happen.  */
+  hdr_val = extract_unsigned_integer
+    (hdr.magic, sizeof (hdr.magic), byte_order);
+  if (hdr_val != BFD_MACH_O_MH_MAGIC && hdr_val != BFD_MACH_O_MH_MAGIC_64)
+    return 0;
+
+  /* Check executable.  */
+  hdr_val = extract_unsigned_integer
+    (hdr.filetype, sizeof (hdr.filetype), byte_order);
+  if (hdr_val == BFD_MACH_O_MH_EXECUTE)
+    return load_addr;
+
+  return 0;
+}
+
+/* Get the load address of the executable using dyld list of images.
+   We assume that the dyld info are correct (which is wrong if the target
+   is stopped at the first instruction).  */
+
+static CORE_ADDR
+darwin_read_exec_load_addr_from_dyld (struct darwin_info *info)
+{
+  struct type *ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr;
+  int ptr_len = TYPE_LENGTH (ptr_type);
+  unsigned int image_info_size = ptr_len * 3;
+  int i;
+
+  /* Read infos for each solib.  One of them should be the executable.  */
+  for (i = 0; i < info->all_image.count; i++)
+    {
+      CORE_ADDR iinfo = info->all_image.info + i * image_info_size;
+      gdb_byte buf[image_info_size];
+      CORE_ADDR load_addr;
+
+      /* Read image info from inferior.  */
+      if (target_read_memory (iinfo, buf, image_info_size))
+	break;
+
+      load_addr = extract_typed_address (buf, ptr_type);
+      if (darwin_validate_exec_header (load_addr) == load_addr)
+	return load_addr;
+    }
+
+  return 0;
+}
+
+/* Get the load address of the executable when the PC is at the dyld
+   entry point using parameter passed by the kernel (at SP). */
+
+static CORE_ADDR
+darwin_read_exec_load_addr_at_init (struct darwin_info *info)
+{
+  struct gdbarch *gdbarch = target_gdbarch ();
+  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+  int addr_size = gdbarch_addr_bit (gdbarch) / 8;
+  ULONGEST load_ptr_addr;
+  ULONGEST load_addr;
+  gdb_byte buf[8];
+
+  /* Get SP.  */
+  if (regcache_cooked_read_unsigned (get_current_regcache (),
+				     gdbarch_sp_regnum (gdbarch),
+				     &load_ptr_addr) != REG_VALID)
+    return 0;
+
+  /* Read value at SP (image load address).  */
+  if (target_read_memory (load_ptr_addr, buf, addr_size))
+    return 0;
+
+  load_addr = extract_unsigned_integer (buf, addr_size, byte_order);
+
+  return darwin_validate_exec_header (load_addr);
+}
+
 /* Return 1 if PC lies in the dynamic symbol resolution code of the
    run time loader.  */
 
@@ -340,70 +398,76 @@ darwin_in_dynsym_resolve_code (CORE_ADDR pc)
   return 0;
 }
 
+/* A wrapper for bfd_mach_o_fat_extract that handles reference
+   counting properly.  This will either return NULL, or return a new
+   reference to a BFD.  */
 
-/* No special symbol handling.  */
-
-static void
-darwin_special_symbol_handling (void)
+static gdb_bfd_ref_ptr
+gdb_bfd_mach_o_fat_extract (bfd *abfd, bfd_format format,
+			    const bfd_arch_info_type *arch)
 {
+  bfd *result = bfd_mach_o_fat_extract (abfd, format, arch);
+
+  if (result == NULL)
+    return NULL;
+
+  if (result == abfd)
+    gdb_bfd_ref (result);
+  else
+    gdb_bfd_mark_parent (result, abfd);
+
+  return gdb_bfd_ref_ptr (result);
 }
 
-/* Extract dyld_all_image_addr when the process was just created, assuming the
-   current PC is at the entry of the dynamic linker.  */
+/* Return the BFD for the program interpreter.  */
 
-static void
-darwin_solib_get_all_image_info_addr_at_init (struct darwin_info *info)
+static gdb_bfd_ref_ptr
+darwin_get_dyld_bfd ()
 {
-  gdb_byte *interp_name;
-  CORE_ADDR load_addr = 0;
-  bfd *dyld_bfd = NULL;
-  struct cleanup *cleanup;
+  char *interp_name;
 
   /* This method doesn't work with an attached process.  */
   if (current_inferior ()->attach_flag)
-    return;
+    return NULL;
 
   /* Find the program interpreter.  */
   interp_name = find_program_interpreter ();
   if (!interp_name)
-    return;
-
-  cleanup = make_cleanup (null_cleanup, NULL);
+    return NULL;
 
   /* Create a bfd for the interpreter.  */
-  dyld_bfd = gdb_bfd_ref (bfd_openr (interp_name, gnutarget));
-  if (dyld_bfd)
+  gdb_bfd_ref_ptr dyld_bfd (gdb_bfd_open (interp_name, gnutarget, -1));
+  if (dyld_bfd != NULL)
     {
-      bfd *sub;
-
-      make_cleanup_bfd_unref (dyld_bfd);
-      sub = bfd_mach_o_fat_extract (dyld_bfd, bfd_object,
-				    gdbarch_bfd_arch_info (target_gdbarch));
-      if (sub)
-	{
-	  dyld_bfd = gdb_bfd_ref (sub);
-	  make_cleanup_bfd_unref (sub);
-	}
-      else
-	dyld_bfd = NULL;
-    }
-  if (!dyld_bfd)
-    {
-      do_cleanups (cleanup);
-      return;
+      gdb_bfd_ref_ptr sub
+	(gdb_bfd_mach_o_fat_extract (dyld_bfd.get (), bfd_object,
+				     gdbarch_bfd_arch_info (target_gdbarch ())));
+      dyld_bfd = sub;
     }
+  return dyld_bfd;
+}
+
+/* Extract dyld_all_image_addr when the process was just created, assuming the
+   current PC is at the entry of the dynamic linker.  */
+
+static void
+darwin_solib_get_all_image_info_addr_at_init (struct darwin_info *info)
+{
+  CORE_ADDR load_addr = 0;
+  gdb_bfd_ref_ptr dyld_bfd = darwin_get_dyld_bfd ();
+
+  if (dyld_bfd == NULL)
+    return;
 
   /* We find the dynamic linker's base address by examining
      the current pc (which should point at the entry point for the
      dynamic linker) and subtracting the offset of the entry point.  */
   load_addr = (regcache_read_pc (get_current_regcache ())
-               - bfd_get_start_address (dyld_bfd));
+               - bfd_get_start_address (dyld_bfd.get ()));
 
   /* Now try to set a breakpoint in the dynamic linker.  */
   info->all_image_addr =
-    lookup_symbol_from_bfd (dyld_bfd, "_dyld_all_image_infos");
-
-  do_cleanups (cleanup);
+    lookup_symbol_from_bfd (dyld_bfd.get (), "_dyld_all_image_infos");
 
   if (info->all_image_addr == 0)
     return;
@@ -411,22 +475,28 @@ darwin_solib_get_all_image_info_addr_at_init (struct darwin_info *info)
   info->all_image_addr += load_addr;
 }
 
-/* Extract dyld_all_image_addr reading it from 
+/* Extract dyld_all_image_addr reading it from
    TARGET_OBJECT_DARWIN_DYLD_INFO.  */
 
 static void
 darwin_solib_read_all_image_info_addr (struct darwin_info *info)
 {
-  gdb_byte buf[8 + 8 + 4];
+  gdb_byte buf[8];
   LONGEST len;
-  enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
+  struct type *ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr;
 
-  len = target_read (&current_target, TARGET_OBJECT_DARWIN_DYLD_INFO, NULL,
-                     buf, 0, sizeof (buf));
-  if (len != sizeof (buf))
+  /* Sanity check.  */
+  if (TYPE_LENGTH (ptr_type) > sizeof (buf))
     return;
 
-  info->all_image_addr = extract_unsigned_integer (buf, 8, byte_order);
+  len = target_read (current_top_target (), TARGET_OBJECT_DARWIN_DYLD_INFO,
+		     NULL, buf, 0, TYPE_LENGTH (ptr_type));
+  if (len <= 0)
+    return;
+
+  /* The use of BIG endian is intended, as BUF is a raw stream of bytes.  This
+      makes the support of remote protocol easier.  */
+  info->all_image_addr = extract_unsigned_integer (buf, len, BFD_ENDIAN_BIG);
 }
 
 /* Shared library startup support.  See documentation in solib-svr4.c.  */
@@ -435,6 +505,7 @@ static void
 darwin_solib_create_inferior_hook (int from_tty)
 {
   struct darwin_info *info = get_darwin_info ();
+  CORE_ADDR load_addr;
 
   info->all_image_addr = 0;
 
@@ -448,8 +519,81 @@ darwin_solib_create_inferior_hook (int from_tty)
 
   darwin_load_image_infos (info);
 
-  if (darwin_dyld_version_ok (info))
-    create_solib_event_breakpoint (target_gdbarch, info->all_image.notifier);
+  if (!darwin_dyld_version_ok (info))
+    {
+      warning (_("unhandled dyld version (%d)"), info->all_image.version);
+      return;
+    }
+
+  if (info->all_image.count != 0)
+    {
+      /* Possible relocate the main executable (PIE).  */
+      load_addr = darwin_read_exec_load_addr_from_dyld (info);
+    }
+  else
+    {
+      /* Possible issue:
+	 Do not break on the notifier if dyld is not initialized (deduced from
+	 count == 0).  In that case, dyld hasn't relocated itself and the
+	 notifier may point to a wrong address.  */
+
+      load_addr = darwin_read_exec_load_addr_at_init (info);
+    }
+
+  if (load_addr != 0 && symfile_objfile != NULL)
+    {
+      CORE_ADDR vmaddr;
+
+      /* Find the base address of the executable.  */
+      vmaddr = bfd_mach_o_get_base_address (exec_bfd);
+
+      /* Relocate.  */
+      if (vmaddr != load_addr)
+	objfile_rebase (symfile_objfile, load_addr - vmaddr);
+    }
+
+  /* Set solib notifier (to reload list of shared libraries).  */
+  CORE_ADDR notifier = info->all_image.notifier;
+
+  if (info->all_image.count == 0)
+    {
+      /* Dyld hasn't yet relocated itself, so the notifier address may
+	 be incorrect (as it has to be relocated).  */
+      CORE_ADDR start = bfd_get_start_address (exec_bfd);
+      if (start == 0)
+	notifier = 0;
+      else
+        {
+          gdb_bfd_ref_ptr dyld_bfd = darwin_get_dyld_bfd ();
+          if (dyld_bfd != NULL)
+            {
+              CORE_ADDR dyld_bfd_start_address;
+              CORE_ADDR dyld_relocated_base_address;
+              CORE_ADDR pc;
+
+              dyld_bfd_start_address = bfd_get_start_address (dyld_bfd.get());
+
+              /* We find the dynamic linker's base address by examining
+                 the current pc (which should point at the entry point
+                 for the dynamic linker) and subtracting the offset of
+                 the entry point.  */
+
+              pc = regcache_read_pc (get_current_regcache ());
+              dyld_relocated_base_address = pc - dyld_bfd_start_address;
+
+              /* We get the proper notifier relocated address by
+                 adding the dyld relocated base address to the current
+                 notifier offset value.  */
+
+              notifier += dyld_relocated_base_address;
+            }
+        }
+    }
+
+  /* Add the breakpoint which is hit by dyld when the list of solib is
+     modified.  */
+  if (notifier != 0)
+    create_solib_event_breakpoint (target_gdbarch (), notifier);
 }
 
 static void
@@ -464,6 +608,9 @@ darwin_clear_solib (void)
 static void
 darwin_free_so (struct so_list *so)
 {
+  lm_info_darwin *li = (lm_info_darwin *) so->lm_info;
+
+  delete li;
 }
 
 /* The section table is built from bfd sections using bfd VMAs.
@@ -473,8 +620,10 @@ static void
 darwin_relocate_section_addresses (struct so_list *so,
 				   struct target_section *sec)
 {
-  sec->addr += so->lm_info->lm_addr;
-  sec->endaddr += so->lm_info->lm_addr;
+  lm_info_darwin *li = (lm_info_darwin *) so->lm_info;
+
+  sec->addr += li->lm_addr;
+  sec->endaddr += li->lm_addr;
 
   /* Best effort to set addr_high/addr_low.  This is used only by
      'info sharedlibary'.  */
@@ -489,60 +638,46 @@ darwin_relocate_section_addresses (struct so_list *so,
     so->addr_low = sec->addr;
 }
 
-static struct symbol *
-darwin_lookup_lib_symbol (const struct objfile *objfile,
-			  const char *name,
-			  const domain_enum domain)
+static gdb_bfd_ref_ptr
+darwin_bfd_open (const char *pathname)
 {
-  return NULL;
-}
-
-static bfd *
-darwin_bfd_open (char *pathname)
-{
-  char *found_pathname;
   int found_file;
-  bfd *abfd;
-  bfd *res;
 
   /* Search for shared library file.  */
-  found_pathname = solib_find (pathname, &found_file);
+  gdb::unique_xmalloc_ptr<char> found_pathname
+    = solib_find (pathname, &found_file);
   if (found_pathname == NULL)
     perror_with_name (pathname);
 
   /* Open bfd for shared library.  */
-  abfd = solib_bfd_fopen (found_pathname, found_file);
+  gdb_bfd_ref_ptr abfd (solib_bfd_fopen (found_pathname.get (), found_file));
+
+  gdb_bfd_ref_ptr res
+    (gdb_bfd_mach_o_fat_extract (abfd.get (), bfd_object,
+				 gdbarch_bfd_arch_info (target_gdbarch ())));
+  if (res == NULL)
+    error (_("`%s': not a shared-library: %s"),
+	   bfd_get_filename (abfd.get ()), bfd_errmsg (bfd_get_error ()));
+
+  /* The current filename for fat-binary BFDs is a name generated
+     by BFD, usually a string containing the name of the architecture.
+     Reset its value to the actual filename.  */
+  bfd_set_filename (res.get (), xstrdup (pathname));
 
-  res = bfd_mach_o_fat_extract (abfd, bfd_object,
-				gdbarch_bfd_arch_info (target_gdbarch));
-  if (!res)
-    {
-      make_cleanup_bfd_unref (abfd);
-      error (_("`%s': not a shared-library: %s"),
-	     bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ()));
-    }
   return res;
 }
 
 struct target_so_ops darwin_so_ops;
 
-/* -Wmissing-prototypes */
-extern initialize_file_ftype _initialize_darwin_solib;
-
 void
 _initialize_darwin_solib (void)
 {
-  solib_darwin_pspace_data
-    = register_program_space_data_with_cleanup (darwin_pspace_data_cleanup);
-
   darwin_so_ops.relocate_section_addresses = darwin_relocate_section_addresses;
   darwin_so_ops.free_so = darwin_free_so;
   darwin_so_ops.clear_solib = darwin_clear_solib;
   darwin_so_ops.solib_create_inferior_hook = darwin_solib_create_inferior_hook;
-  darwin_so_ops.special_symbol_handling = darwin_special_symbol_handling;
   darwin_so_ops.current_sos = darwin_current_sos;
   darwin_so_ops.open_symbol_file_object = open_symbol_file_object;
   darwin_so_ops.in_dynsym_resolve_code = darwin_in_dynsym_resolve_code;
-  darwin_so_ops.lookup_lib_global_symbol = darwin_lookup_lib_symbol;
   darwin_so_ops.bfd_open = darwin_bfd_open;
 }