2004-06-09 Andrew Cagney <cagney@gnu.org>

	* solib-svr4.c [HANDLE_SVR4_EXEC_EMULATORS]: Delete #ifdef code.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7d81f5c70542dd5a1ba21b94a9f1ec9c82d08e89..664aa634ca1557b32838372dffec84965e3a65b3 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,7 @@
 2004-06-09  Andrew Cagney  <cagney@gnu.org>
 
+       * solib-svr4.c [HANDLE_SVR4_EXEC_EMULATORS]: Delete #ifdef code.
+
        * config/ia64/tm-linux.h (TARGET_ELF64): Delete macro, Update
        copyright.
        * config/ia64/tm-aix.h (TARGET_ELF64): Ditto.

diff --git a/gdb/solib-svr4.c b/gdb/solib-svr4.c
index abf2948a1f733e8bbeb81f66d3ae82938bcc5929..7976e6707f229389376a85466eb29c45b5f3a542 100644 (file)
--- a/gdb/solib-svr4.c
+++ b/gdb/solib-svr4.c
@@ -272,133 +272,6 @@ bfd_lookup_symbol (bfd *abfd, char *symname, flagword sect_flags)
   return symaddr;
 }
 
-#ifdef HANDLE_SVR4_EXEC_EMULATORS
-
-/*
-   Solaris BCP (the part of Solaris which allows it to run SunOS4
-   a.out files) throws in another wrinkle. Solaris does not fill
-   in the usual a.out link map structures when running BCP programs,
-   the only way to get at them is via groping around in the dynamic
-   linker.
-   The dynamic linker and it's structures are located in the shared
-   C library, which gets run as the executable's "interpreter" by
-   the kernel.
-
-   Note that we can assume nothing about the process state at the time
-   we need to find these structures.  We may be stopped on the first
-   instruction of the interpreter (C shared library), the first
-   instruction of the executable itself, or somewhere else entirely
-   (if we attached to the process for example).
- */
-
-static char *debug_base_symbols[] =
-{
-  "r_debug",                   /* Solaris 2.3 */
-  "_r_debug",                  /* Solaris 2.1, 2.2 */
-  NULL
-};
-
-static int look_for_base (int, CORE_ADDR);
-
-/*
-
-   LOCAL FUNCTION
-
-   look_for_base -- examine file for each mapped address segment
-
-   SYNOPSYS
-
-   static int look_for_base (int fd, CORE_ADDR baseaddr)
-
-   DESCRIPTION
-
-   This function is passed to proc_iterate_over_mappings, which
-   causes it to get called once for each mapped address space, with
-   an open file descriptor for the file mapped to that space, and the
-   base address of that mapped space.
-
-   Our job is to find the debug base symbol in the file that this
-   fd is open on, if it exists, and if so, initialize the dynamic
-   linker structure base address debug_base.
-
-   Note that this is a computationally expensive proposition, since
-   we basically have to open a bfd on every call, so we specifically
-   avoid opening the exec file.
- */
-
-static int
-look_for_base (int fd, CORE_ADDR baseaddr)
-{
-  bfd *interp_bfd;
-  CORE_ADDR address = 0;
-  char **symbolp;
-
-  /* If the fd is -1, then there is no file that corresponds to this
-     mapped memory segment, so skip it.  Also, if the fd corresponds
-     to the exec file, skip it as well. */
-
-  if (fd == -1
-      || (exec_bfd != NULL
-         && fdmatch (fileno ((FILE *) (exec_bfd->iostream)), fd)))
-    {
-      return (0);
-    }
-
-  /* Try to open whatever random file this fd corresponds to.  Note that
-     we have no way currently to find the filename.  Don't gripe about
-     any problems we might have, just fail. */
-
-  if ((interp_bfd = bfd_fdopenr ("unnamed", gnutarget, fd)) == NULL)
-    {
-      return (0);
-    }
-  if (!bfd_check_format (interp_bfd, bfd_object))
-    {
-      /* FIXME-leak: on failure, might not free all memory associated with
-         interp_bfd.  */
-      bfd_close (interp_bfd);
-      return (0);
-    }
-
-  /* Now try to find our debug base symbol in this file, which we at
-     least know to be a valid ELF executable or shared library. */
-
-  for (symbolp = debug_base_symbols; *symbolp != NULL; symbolp++)
-    {
-      address = bfd_lookup_symbol (interp_bfd, *symbolp, 0);
-      if (address != 0)
-       {
-         break;
-       }
-    }
-  if (address == 0)
-    {
-      /* FIXME-leak: on failure, might not free all memory associated with
-         interp_bfd.  */
-      bfd_close (interp_bfd);
-      return (0);
-    }
-
-  /* Eureka!  We found the symbol.  But now we may need to relocate it
-     by the base address.  If the symbol's value is less than the base
-     address of the shared library, then it hasn't yet been relocated
-     by the dynamic linker, and we have to do it ourself.  FIXME: Note
-     that we make the assumption that the first segment that corresponds
-     to the shared library has the base address to which the library
-     was relocated. */
-
-  if (address < baseaddr)
-    {
-      address += baseaddr;
-    }
-  debug_base = address;
-  /* FIXME-leak: on failure, might not free all memory associated with
-     interp_bfd.  */
-  bfd_close (interp_bfd);
-  return (1);
-}
-#endif /* HANDLE_SVR4_EXEC_EMULATORS */
-
 /*
 
    LOCAL FUNCTION
@@ -579,11 +452,6 @@ locate_base (void)
       if (exec_bfd != NULL
          && bfd_get_flavour (exec_bfd) == bfd_target_elf_flavour)
        debug_base = elf_locate_base ();
-#ifdef HANDLE_SVR4_EXEC_EMULATORS
-      /* Try it the hard way for emulated executables.  */
-      else if (!ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
-       proc_iterate_over_mappings (look_for_base);
-#endif
     }
   return (debug_base);
 }