* emulparams/elf64alpha.sh (PLT): New.

        (TEXT_PLT): New.
        * emultempl/alphaelf.em (disable_relaxation): New.
        (limit_32bit): Rename from elf64alpha_32bit; update all users.
        (elf64_alpha_use_secureplt): Declare.
        (bfd_elf64_alpha_vec, bfd_elf64_alpha_freebsd_vec): Declare.
        (alpha_after_open): New.
        (alpha_before_allocation): New.
        (OPTION_NO_RELAX, OPTION_SECUREPLT, OPTION_NO_SECUREPLT): New.
        (PARSE_AND_LIST_LONGOPTS): Include them.
        (PARSE_AND_LIST_OPTIONS): Likewise.
        (PARSE_AND_LIST_ARGS_CASES): Likewise.
        (LDEMUL_AFTER_OPEN, LDEMUL_BEFORE_ALLOCATION): New.
        * scripttempl/elf.sc (TEXT_PLT): New.
        (PLT): Use it.

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 0c1185c..32362d5 100644 (file)
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,21 @@
+2005-05-29  Richard Henderson  <rth@redhat.com>
+
+       * emulparams/elf64alpha.sh (PLT): New.
+       (TEXT_PLT): New.
+       * emultempl/alphaelf.em (disable_relaxation): New.
+       (limit_32bit): Rename from elf64alpha_32bit; update all users.
+       (elf64_alpha_use_secureplt): Declare.
+       (bfd_elf64_alpha_vec, bfd_elf64_alpha_freebsd_vec): Declare.
+       (alpha_after_open): New.
+       (alpha_before_allocation): New.
+       (OPTION_NO_RELAX, OPTION_SECUREPLT, OPTION_NO_SECUREPLT): New.
+       (PARSE_AND_LIST_LONGOPTS): Include them.
+       (PARSE_AND_LIST_OPTIONS): Likewise.
+       (PARSE_AND_LIST_ARGS_CASES): Likewise.
+       (LDEMUL_AFTER_OPEN, LDEMUL_BEFORE_ALLOCATION): New.
+       * scripttempl/elf.sc (TEXT_PLT): New.
+       (PLT): Use it.
+
 2005-05-27  Andreas Schwab  <schwab@suse.de>
 
        * configure.host (HOSTING_LIBS): Add libunwind.a if it exists.

diff --git a/ld/emulparams/elf64alpha.sh b/ld/emulparams/elf64alpha.sh
index 093c8df..47a0bb0 100644 (file)
--- a/ld/emulparams/elf64alpha.sh
+++ b/ld/emulparams/elf64alpha.sh
@@ -12,7 +12,13 @@ ARCH=alpha
 MACHINE=
 GENERATE_SHLIB_SCRIPT=yes
 GENERATE_PIE_SCRIPT=yes
-DATA_PLT=
+
+# Yes, we want duplicate .plt sections.  The linker chooses the
+# appropriate one magically in alpha_after_open.
+PLT=".plt          ${RELOCATING-0} : SPECIAL { *(.plt) }"
+DATA_PLT=yes
+TEXT_PLT=yes
+
 # Note that the number is always big-endian, thus we have to 
 # reverse the digit string.
 NOP=0x0000fe2f1f04ff47         # unop; nop

diff --git a/ld/emultempl/alphaelf.em b/ld/emultempl/alphaelf.em
index eeac758..62eca18 100644 (file)
--- a/ld/emultempl/alphaelf.em
+++ b/ld/emultempl/alphaelf.em
@@ -1,5 +1,5 @@
 # This shell script emits a C file. -*- C -*-
-#   Copyright 2003, 2004 Free Software Foundation, Inc.
+#   Copyright 2003, 2004, 2005 Free Software Foundation, Inc.
 #
 # This file is part of GLD, the Gnu Linker.
 #
@@ -27,15 +27,54 @@ cat >>e${EMULATION_NAME}.c <<EOF
 #include "elf/alpha.h"
 #include "elf-bfd.h"
 
-static int elf64alpha_32bit = 0;
+static bfd_boolean limit_32bit;
+static bfd_boolean disable_relaxation;
+
+extern bfd_boolean elf64_alpha_use_secureplt;
+extern const bfd_target bfd_elf64_alpha_vec;
+extern const bfd_target bfd_elf64_alpha_freebsd_vec;
+
 
 /* Set the start address as in the Tru64 ld.  */
 #define ALPHA_TEXT_START_32BIT 0x12000000
 
 static void
+alpha_after_open (void)
+{
+  if (link_info.hash->creator == &bfd_elf64_alpha_vec
+      || link_info.hash->creator == &bfd_elf64_alpha_freebsd_vec)
+    {
+      unsigned int num_plt;
+      lang_output_section_statement_type *os;
+      lang_output_section_statement_type *plt_os[2];
+
+      num_plt = 0;
+      for (os = &lang_output_section_statement.head->output_section_statement;
+          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)
+  if (limit_32bit && !link_info.shared && !link_info.relocatable)
     lang_section_start (".interp",
                        exp_binop ('+',
                                   exp_intop (ALPHA_TEXT_START_32BIT),
@@ -44,9 +83,20 @@ alpha_after_parse (void)
 }
 
 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 && !link_info.relocatable && !disable_relaxation)
+    command_line.relax = TRUE;
+}
+
+static void
 alpha_finish (void)
 {
-  if (elf64alpha_32bit)
+  if (limit_32bit)
     elf_elfheader (output_bfd)->e_flags |= EF_ALPHA_32BIT;
 
   gld${EMULATION_NAME}_finish ();
@@ -57,25 +107,47 @@ EOF
 # parse_args and list_options functions.
 #
 PARSE_AND_LIST_PROLOGUE='
-#define OPTION_TASO            300
+#define OPTION_TASO            300
+#define OPTION_NO_RELAX                (OPTION_TASO + 1)
+#define OPTION_SECUREPLT       (OPTION_NO_RELAX + 1)
+#define OPTION_NO_SECUREPLT    (OPTION_SECUREPLT + 1)
 '
 
 PARSE_AND_LIST_LONGOPTS='
-  {"taso", no_argument, NULL, OPTION_TASO},
+  { "taso", no_argument, NULL, OPTION_TASO },
+  { "no-relax", no_argument, NULL, OPTION_NO_RELAX },
+  { "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\
+  --no-relax           Do not relax call and gp sequences.\n\
+  --secureplt          Force PLT in text segment.\n\
+  --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_NO_RELAX:
+      disable_relaxation = TRUE;
+      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

diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc
index 3e0f0b0..e7702a3 100644 (file)
--- a/ld/scripttempl/elf.sc
+++ b/ld/scripttempl/elf.sc
@@ -104,6 +104,7 @@ INTERP=".interp       ${RELOCATING-0} : { *(.interp) }"
 if test -z "$PLT"; then
   PLT=".plt          ${RELOCATING-0} : { *(.plt) }"
 fi
+test -n "${DATA_PLT-${BSS_PLT-text}}" && TEXT_PLT=yes
 if test -z "$GOT"; then
   if test -z "$SEPARATE_GOTPLT"; then
     GOT=".got          ${RELOCATING-0} : { *(.got.plt) *(.got) }"
@@ -302,7 +303,7 @@ cat <<EOF
     ${RELOCATING+${INIT_END}}
   } =${NOP-0}
 
-  ${DATA_PLT-${BSS_PLT-${PLT}}}
+  ${TEXT_PLT+${PLT}}
   .text         ${RELOCATING-0} :
   {
     ${RELOCATING+${TEXT_START_SYMBOLS}}