# This shell script emits a C file. -*- C -*-
-# Copyright 2003 Free Software Foundation, Inc.
+# Copyright (C) 2003-2019 Free Software Foundation, Inc.
#
-# This file is part of GLD, the Gnu Linker.
+# This file is part of the GNU Binutils.
#
# 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 2 of the License, or
+# 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,
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
#
-# This file is sourced from elf32.em, and defines extra alpha
+# This file is sourced from elf.em, and defines extra alpha
# specific routines.
#
-cat >>e${EMULATION_NAME}.c <<EOF
+fragment <<EOF
#include "elf/internal.h"
#include "elf/alpha.h"
#include "elf-bfd.h"
-static void alpha_after_parse PARAMS ((void));
-static void alpha_finish PARAMS ((void));
+static bfd_boolean limit_32bit;
+
+extern bfd_boolean elf64_alpha_use_secureplt;
-static int elf64alpha_32bit = 0;
/* Set the start address as in the Tru64 ld. */
#define ALPHA_TEXT_START_32BIT 0x12000000
static void
-alpha_after_parse ()
+alpha_after_open (void)
+{
+ if (bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
+ && elf_object_id (link_info.output_bfd) == ALPHA_ELF_DATA)
+ {
+ unsigned int num_plt;
+ lang_output_section_statement_type *os;
+ lang_output_section_statement_type *plt_os[2];
+
+ num_plt = 0;
+ for (os = (void *) lang_os_list.head;
+ os != NULL;
+ os = os->next)
+ {
+ if (os->constraint == SPECIAL && strcmp (os->name, ".plt") == 0)
+ {
+ if (num_plt < 2)
+ plt_os[num_plt] = os;
+ ++num_plt;
+ }
+ }
+
+ if (num_plt == 2)
+ {
+ plt_os[0]->constraint = elf64_alpha_use_secureplt ? 0 : -1;
+ plt_os[1]->constraint = elf64_alpha_use_secureplt ? -1 : 0;
+ }
+ }
+
+ gld${EMULATION_NAME}_after_open ();
+}
+
+static void
+alpha_after_parse (void)
{
- if (elf64alpha_32bit && !link_info.shared && !link_info.relocatable)
+ link_info.relax_pass = 2;
+ if (limit_32bit
+ && !bfd_link_pic (&link_info)
+ && !bfd_link_relocatable (&link_info))
lang_section_start (".interp",
exp_binop ('+',
exp_intop (ALPHA_TEXT_START_32BIT),
- exp_nameop (SIZEOF_HEADERS, NULL)));
+ exp_nameop (SIZEOF_HEADERS, NULL)),
+ NULL);
+
+ ldelf_after_parse ();
+}
+
+static void
+alpha_before_allocation (void)
+{
+ /* Call main function; we're just extending it. */
+ gld${EMULATION_NAME}_before_allocation ();
+
+ /* Add -relax if -O, not -r, and not explicitly disabled. */
+ if (link_info.optimize
+ && !bfd_link_relocatable (&link_info)
+ && ! RELAXATION_DISABLED_BY_USER)
+ ENABLE_RELAXATION;
}
static void
-alpha_finish ()
+alpha_finish (void)
{
- if (elf64alpha_32bit)
- elf_elfheader (output_bfd)->e_flags |= EF_ALPHA_32BIT;
+ if (limit_32bit)
+ elf_elfheader (link_info.output_bfd)->e_flags |= EF_ALPHA_32BIT;
- gld${EMULATION_NAME}_finish ();
+ finish_default ();
}
EOF
# parse_args and list_options functions.
#
PARSE_AND_LIST_PROLOGUE='
-#define OPTION_TASO 300
+#define OPTION_TASO 300
+#define OPTION_SECUREPLT (OPTION_TASO + 1)
+#define OPTION_NO_SECUREPLT (OPTION_SECUREPLT + 1)
'
PARSE_AND_LIST_LONGOPTS='
- {"taso", no_argument, NULL, OPTION_TASO},
+ { "taso", no_argument, NULL, OPTION_TASO },
+ { "secureplt", no_argument, NULL, OPTION_SECUREPLT },
+ { "no-secureplt", no_argument, NULL, OPTION_NO_SECUREPLT },
'
PARSE_AND_LIST_OPTIONS='
- fprintf (file, _(" -taso\t\t\tLoad executable in the lower 31-bit addressable\n"));
- fprintf (file, _("\t\t\t virtual address range\n"));
+ fprintf (file, _("\
+ --taso Load executable in the lower 31-bit addressable\n\
+ virtual address range\n"));
+ fprintf (file, _("\
+ --secureplt Force PLT in text segment\n"));
+ fprintf (file, _("\
+ --no-secureplt Force PLT in data segment\n"));
'
PARSE_AND_LIST_ARGS_CASES='
case OPTION_TASO:
- elf64alpha_32bit = 1;
+ limit_32bit = 1;
+ break;
+ case OPTION_SECUREPLT:
+ elf64_alpha_use_secureplt = TRUE;
+ break;
+ case OPTION_NO_SECUREPLT:
+ elf64_alpha_use_secureplt = FALSE;
break;
'
# Put these extra alpha routines in ld_${EMULATION_NAME}_emulation
#
+LDEMUL_AFTER_OPEN=alpha_after_open
LDEMUL_AFTER_PARSE=alpha_after_parse
+LDEMUL_BEFORE_ALLOCATION=alpha_before_allocation
LDEMUL_FINISH=alpha_finish