Merge rev 1.2 (teach `ld' how to access FreeBSD's ld ELF hints)
into Binutils 2.12.0_snap.
This commit is contained in:
David E. O'Brien
parent
9ff63f1887
commit
e6c1391fb2
@ -6,6 +6,11 @@
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# This file is now misnamed, because it supports both 32 bit and 64 bit
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# ELF emulations.
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test -z "${ELFSIZE}" && ELFSIZE=32
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if [ -z "$MACHINE" ]; then
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OUTPUT_ARCH=${ARCH}
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else
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OUTPUT_ARCH=${ARCH}:${MACHINE}
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fi
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cat >e${EMULATION_NAME}.c <<EOF
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/* This file is is generated by a shell script. DO NOT EDIT! */
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@ -36,8 +41,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libiberty.h"
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#include <ctype.h>
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#include "safe-ctype.h"
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#include "bfdlink.h"
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@ -51,27 +55,38 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "ldgram.h"
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#include "elf/common.h"
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static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
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static void gld${EMULATION_NAME}_before_parse
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PARAMS ((void));
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static void gld${EMULATION_NAME}_vercheck
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PARAMS ((lang_input_statement_type *));
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static void gld${EMULATION_NAME}_stat_needed
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PARAMS ((lang_input_statement_type *));
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static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *, int));
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static boolean gld${EMULATION_NAME}_try_needed
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PARAMS ((const char *, int));
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static boolean gld${EMULATION_NAME}_search_needed
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PARAMS ((const char *, const char *, int));
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static void gld${EMULATION_NAME}_check_needed
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PARAMS ((lang_input_statement_type *));
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static void gld${EMULATION_NAME}_after_open PARAMS ((void));
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static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *));
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static void gld${EMULATION_NAME}_after_open
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PARAMS ((void));
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static void gld${EMULATION_NAME}_find_exp_assignment
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PARAMS ((etree_type *));
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static void gld${EMULATION_NAME}_find_statement_assignment
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PARAMS ((lang_statement_union_type *));
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static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
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static void gld${EMULATION_NAME}_before_allocation
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PARAMS ((void));
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static boolean gld${EMULATION_NAME}_open_dynamic_archive
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PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
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static lang_output_section_statement_type *output_rel_find PARAMS ((void));
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static lang_output_section_statement_type *output_rel_find
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PARAMS ((void));
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static asection *output_prev_sec_find
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PARAMS ((lang_output_section_statement_type *));
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static boolean gld${EMULATION_NAME}_place_orphan
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PARAMS ((lang_input_statement_type *, asection *));
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static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
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static void gld${EMULATION_NAME}_finish
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PARAMS ((void));
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static char *gld${EMULATION_NAME}_get_script
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PARAMS ((int *isfile));
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EOF
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@ -93,7 +108,15 @@ cat >>e${EMULATION_NAME}.c <<EOF
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static void
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gld${EMULATION_NAME}_before_parse ()
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{
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ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`;
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const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}");
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if (arch)
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{
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ldfile_output_architecture = arch->arch;
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ldfile_output_machine = arch->mach;
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ldfile_output_machine_name = arch->printable_name;
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}
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else
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ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`;
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config.dynamic_link = ${DYNAMIC_LINK-true};
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config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`;
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}
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@ -145,7 +168,7 @@ gld${EMULATION_NAME}_vercheck (s)
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soname = bfd_elf_get_dt_soname (s->the_bfd);
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if (soname == NULL)
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soname = lbasename (bfd_get_filename (s->the_bfd));
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soname = basename (bfd_get_filename (s->the_bfd));
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for (l = global_vercheck_needed; l != NULL; l = l->next)
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{
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@ -227,10 +250,9 @@ gld${EMULATION_NAME}_stat_needed (s)
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soname = bfd_elf_get_dt_soname (s->the_bfd);
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if (soname == NULL)
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soname = lbasename (s->filename);
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soname = basename (s->filename);
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if (strncmp (soname, global_needed->name,
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suffix - global_needed->name) == 0)
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if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
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einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
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global_needed->name, global_needed->by, soname);
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}
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@ -253,12 +275,12 @@ gld${EMULATION_NAME}_try_needed (name, force)
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return false;
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if (! bfd_check_format (abfd, bfd_object))
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{
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(void) bfd_close (abfd);
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bfd_close (abfd);
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return false;
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}
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if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
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{
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(void) bfd_close (abfd);
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bfd_close (abfd);
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return false;
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}
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@ -281,7 +303,7 @@ gld${EMULATION_NAME}_try_needed (name, force)
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lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
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if (global_vercheck_failed)
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{
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(void) bfd_close (abfd);
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bfd_close (abfd);
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/* Return false to force the caller to move on to try
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another file on the search path. */
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return false;
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@ -306,7 +328,7 @@ case ${target} in
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break;
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if (l == NULL)
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{
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(void) bfd_close (abfd);
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bfd_close (abfd);
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return false;
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}
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}
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@ -332,7 +354,7 @@ cat >>e${EMULATION_NAME}.c <<EOF
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einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
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/* First strip off everything before the last '/'. */
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soname = lbasename (abfd->filename);
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soname = basename (abfd->filename);
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if (trace_file_tries)
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info_msg (_("found %s at %s\n"), soname, name);
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@ -350,6 +372,9 @@ cat >>e${EMULATION_NAME}.c <<EOF
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DT_NEEDED entry for this file. */
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bfd_elf_set_dt_needed_name (abfd, "");
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/* Previos basename call was clobbered in lang_for_each_input_file. */
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soname = basename (abfd->filename);
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/* Tell the ELF backend that the output file needs a DT_NEEDED
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entry for this file if it is used to resolve the reference in
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a regular object. */
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@ -860,6 +885,18 @@ gld${EMULATION_NAME}_find_statement_assignment (s)
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EOF
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if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
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if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
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ELF_INTERPRETER_SET_DEFAULT="
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if (sinterp != NULL)
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{
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sinterp->contents = ${ELF_INTERPRETER_NAME};
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sinterp->_raw_size = strlen (sinterp->contents) + 1;
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}
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"
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else
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ELF_INTERPRETER_SET_DEFAULT=
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fi
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cat >>e${EMULATION_NAME}.c <<EOF
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/* This is called after the sections have been attached to output
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@ -883,11 +920,11 @@ gld${EMULATION_NAME}_before_allocation ()
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rpath = (const char *) getenv ("LD_RUN_PATH");
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if (! (bfd_elf${ELFSIZE}_size_dynamic_sections
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(output_bfd, command_line.soname, rpath,
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command_line.export_dynamic, command_line.filter_shlib,
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command_line.filter_shlib,
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(const char * const *) command_line.auxiliary_filters,
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&link_info, &sinterp, lang_elf_version_info)))
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einfo ("%P%F: failed to set dynamic section sizes: %E\n");
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${ELF_INTERPRETER_SET_DEFAULT}
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/* Let the user override the dynamic linker we are using. */
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if (command_line.interpreter != NULL
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&& sinterp != NULL)
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@ -1019,6 +1056,8 @@ gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
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EOF
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fi
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if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
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cat >>e${EMULATION_NAME}.c <<EOF
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/* A variant of lang_output_section_find. Used by place_orphan. */
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@ -1044,10 +1083,31 @@ output_rel_find ()
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return (lang_output_section_statement_type *) NULL;
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}
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EOF
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/* Find the last output section before given output statement.
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Used by place_orphan. */
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if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
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cat >>e${EMULATION_NAME}.c <<EOF
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static asection *
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output_prev_sec_find (os)
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lang_output_section_statement_type *os;
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{
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asection *s = (asection *) NULL;
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lang_statement_union_type *u;
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lang_output_section_statement_type *lookup;
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for (u = lang_output_section_statement.head;
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u != (lang_statement_union_type *) NULL;
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u = lookup->next)
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{
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lookup = &u->output_section_statement;
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if (lookup == os)
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return s;
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if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
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s = lookup->bfd_section;
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}
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return NULL;
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}
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/* Place an orphan section. We use this to put random SHF_ALLOC
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sections in the right segment. */
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@ -1088,12 +1148,13 @@ gld${EMULATION_NAME}_place_orphan (file, s)
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os = lang_output_section_find (secname);
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if (os != NULL
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&& os->bfd_section != NULL
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&& ((s->flags ^ os->bfd_section->flags)
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& (SEC_LOAD | SEC_ALLOC)) == 0)
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&& (os->bfd_section == NULL
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|| ((s->flags ^ os->bfd_section->flags)
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& (SEC_LOAD | SEC_ALLOC)) == 0))
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{
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/* We have already placed a section with this name. */
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wild_doit (&os->children, s, os, file);
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/* We already have an output section statement with this
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name, and its bfd section, if any, has compatible flags. */
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lang_add_section (&os->children, s, os, file);
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return true;
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}
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}
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@ -1108,7 +1169,7 @@ gld${EMULATION_NAME}_place_orphan (file, s)
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&& strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
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&& hold_text.os != NULL)
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{
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wild_doit (&hold_text.os->children, s, hold_text.os, file);
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lang_add_section (&hold_text.os->children, s, hold_text.os, file);
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return true;
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}
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@ -1121,7 +1182,11 @@ gld${EMULATION_NAME}_place_orphan (file, s)
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(hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL)
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if (s->flags & SEC_EXCLUDE)
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return false;
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{
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if (s->output_section == NULL)
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s->output_section = bfd_abs_section_ptr;
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return true;
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}
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place = NULL;
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if ((s->flags & SEC_ALLOC) == 0)
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@ -1142,7 +1207,25 @@ gld${EMULATION_NAME}_place_orphan (file, s)
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else if (strncmp (secname, ".rel", 4) == 0
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&& (hold_rel.os != NULL
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|| (hold_rel.os = output_rel_find ()) != NULL))
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place = &hold_rel;
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{
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if (! link_info.relocateable && link_info.combreloc)
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{
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if (strncmp (secname, ".rela", 5) == 0)
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os = lang_output_section_find (".rela.dyn");
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else
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os = lang_output_section_find (".rel.dyn");
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if (os != NULL
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&& os->bfd_section != NULL
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&& ((s->flags ^ os->bfd_section->flags)
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& (SEC_LOAD | SEC_ALLOC)) == 0)
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{
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lang_add_section (&os->children, s, os, file);
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return true;
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}
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}
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place = &hold_rel;
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}
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else if ((s->flags & (SEC_CODE | SEC_READONLY)) == SEC_READONLY
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&& HAVE_SECTION (hold_rodata, ".rodata"))
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place = &hold_rodata;
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@ -1183,7 +1266,7 @@ gld${EMULATION_NAME}_place_orphan (file, s)
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/* If the name of the section is representable in C, then create
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symbols to mark the start and the end of the section. */
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for (ps = outsecname; *ps != '\0'; ps++)
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if (! isalnum ((unsigned char) *ps) && *ps != '_')
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if (! ISALNUM (*ps) && *ps != '_')
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break;
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if (*ps == '\0')
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{
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@ -1209,7 +1292,7 @@ gld${EMULATION_NAME}_place_orphan (file, s)
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(etree_type *) NULL,
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(etree_type *) NULL);
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wild_doit (&os->children, s, os, file);
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lang_add_section (&os->children, s, os, file);
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lang_leave_output_section_statement
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((bfd_vma) 0, "*default*",
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@ -1238,45 +1321,50 @@ gld${EMULATION_NAME}_place_orphan (file, s)
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asection *snew, **pps;
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snew = os->bfd_section;
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if (place->section != NULL
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|| (place->os->bfd_section != NULL
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&& place->os->bfd_section != snew))
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{
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/* Shuffle the section to make the output file look neater.
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This is really only cosmetic. */
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if (place->section == NULL)
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{
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#if 0
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/* Finding the end of the list is a little tricky. We
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make a wild stab at it by comparing section flags. */
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flagword first_flags = place->os->bfd_section->flags;
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for (pps = &place->os->bfd_section->next;
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*pps != NULL && (*pps)->flags == first_flags;
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pps = &(*pps)->next)
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;
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place->section = pps;
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#else
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/* Put orphans after the first section on the list. */
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place->section = &place->os->bfd_section->next;
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#endif
|
||||
}
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||||
|
||||
/* Unlink the section. */
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||||
/* Shuffle the bfd section list to make the output file look
|
||||
neater. This is really only cosmetic. */
|
||||
if (place->section == NULL)
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||||
{
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||||
asection *bfd_section = place->os->bfd_section;
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||||
|
||||
/* If the output statement hasn't been used to place
|
||||
any input sections (and thus doesn't have an output
|
||||
bfd_section), look for the closest prior output statement
|
||||
having an output section. */
|
||||
if (bfd_section == NULL)
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||||
bfd_section = output_prev_sec_find (place->os);
|
||||
|
||||
if (bfd_section != NULL && bfd_section != snew)
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||||
place->section = &bfd_section->next;
|
||||
}
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||||
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||||
if (place->section != NULL)
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||||
{
|
||||
/* Unlink the section. */
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||||
for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
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||||
;
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||||
*pps = snew->next;
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||||
bfd_section_list_remove (output_bfd, pps);
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||||
|
||||
/* Now tack it on to the "place->os" section list. */
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||||
snew->next = *place->section;
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||||
*place->section = snew;
|
||||
bfd_section_list_insert (output_bfd, place->section, snew);
|
||||
}
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||||
place->section = &snew->next; /* Save the end of this list. */
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||||
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||||
/* Save the end of this list. Further ophans of this type will
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||||
follow the one we've just added. */
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||||
place->section = &snew->next;
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||||
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||||
/* The following is non-cosmetic. We try to put the output
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||||
statements in some sort of reasonable order here, because
|
||||
they determine the final load addresses of the orphan
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||||
sections. In addition, placing output statements in the
|
||||
wrong order may require extra segments. For instance,
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||||
given a typical situation of all read-only sections placed
|
||||
in one segment and following that a segment containing all
|
||||
the read-write sections, we wouldn't want to place an orphan
|
||||
read/write section before or amongst the read-only ones. */
|
||||
if (add.head != NULL)
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||||
{
|
||||
/* We try to put the output statements in some sort of
|
||||
reasonable order here, because they determine the final
|
||||
load addresses of the orphan sections. */
|
||||
if (place->stmt == NULL)
|
||||
{
|
||||
/* Put the new statement list right at the head. */
|
||||
@ -1302,7 +1390,29 @@ gld${EMULATION_NAME}_place_orphan (file, s)
|
||||
|
||||
return true;
|
||||
}
|
||||
EOF
|
||||
fi
|
||||
|
||||
if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
|
||||
cat >>e${EMULATION_NAME}.c <<EOF
|
||||
|
||||
static void
|
||||
gld${EMULATION_NAME}_finish ()
|
||||
{
|
||||
if (bfd_elf${ELFSIZE}_discard_info (output_bfd, &link_info))
|
||||
{
|
||||
/* Resize the sections. */
|
||||
lang_size_sections (stat_ptr->head, abs_output_section,
|
||||
&stat_ptr->head, 0, (bfd_vma) 0, NULL);
|
||||
|
||||
/* Redo special stuff. */
|
||||
ldemul_after_allocation ();
|
||||
|
||||
/* Do the assignments again. */
|
||||
lang_do_assignments (stat_ptr->head, abs_output_section,
|
||||
(fill_type) 0, (bfd_vma) 0);
|
||||
}
|
||||
}
|
||||
EOF
|
||||
fi
|
||||
|
||||
@ -1333,14 +1443,18 @@ echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}
|
||||
sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
|
||||
echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
|
||||
sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
|
||||
if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
|
||||
echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
|
||||
sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
|
||||
|
||||
fi
|
||||
if test -n "$GENERATE_SHLIB_SCRIPT" ; then
|
||||
echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
|
||||
sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
|
||||
echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
|
||||
sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
|
||||
fi
|
||||
|
||||
echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
|
||||
sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
|
||||
echo ' ; else return' >> e${EMULATION_NAME}.c
|
||||
sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
|
||||
echo '; }' >> e${EMULATION_NAME}.c
|
||||
@ -1387,6 +1501,7 @@ cat >>e${EMULATION_NAME}.c <<EOF
|
||||
#define OPTION_DISABLE_NEW_DTAGS (400)
|
||||
#define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
|
||||
#define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
|
||||
#define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
|
||||
|
||||
static struct option longopts[] =
|
||||
{
|
||||
@ -1400,6 +1515,7 @@ cat >>e${EMULATION_NAME}.c <<EOF
|
||||
{"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
|
||||
{"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
|
||||
{"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
|
||||
{"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
|
||||
{"Bgroup", no_argument, NULL, OPTION_GROUP},
|
||||
{"Bgroup", no_argument, NULL, OPTION_GROUP},
|
||||
EOF
|
||||
@ -1460,6 +1576,10 @@ cat >>e${EMULATION_NAME}.c <<EOF
|
||||
link_info.new_dtags = true;
|
||||
break;
|
||||
|
||||
case OPTION_EH_FRAME_HDR:
|
||||
link_info.eh_frame_hdr = true;
|
||||
break;
|
||||
|
||||
case OPTION_GROUP:
|
||||
link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
|
||||
/* Groups must be self-contained. */
|
||||
@ -1493,6 +1613,12 @@ cat >>e${EMULATION_NAME}.c <<EOF
|
||||
}
|
||||
else if (strcmp (optarg, "defs") == 0)
|
||||
link_info.no_undefined = true;
|
||||
else if (strcmp (optarg, "combreloc") == 0)
|
||||
link_info.combreloc = true;
|
||||
else if (strcmp (optarg, "nocombreloc") == 0)
|
||||
link_info.combreloc = false;
|
||||
else if (strcmp (optarg, "nocopyreloc") == 0)
|
||||
link_info.nocopyreloc = true;
|
||||
/* What about the other Solaris -z options? FIXME. */
|
||||
break;
|
||||
EOF
|
||||
@ -1529,17 +1655,20 @@ cat >>e${EMULATION_NAME}.c <<EOF
|
||||
fprintf (file, _(" -Bgroup\t\tSelects group name lookup rules for DSO\n"));
|
||||
fprintf (file, _(" --disable-new-dtags\tDisable new dynamic tags\n"));
|
||||
fprintf (file, _(" --enable-new-dtags\tEnable new dynamic tags\n"));
|
||||
fprintf (file, _(" --eh-frame-hdr\tCreate .eh_frame_hdr section\n"));
|
||||
fprintf (file, _(" -z combreloc\t\tMerge dynamic relocs into one section and sort\n"));
|
||||
fprintf (file, _(" -z defs\t\tDisallows undefined symbols\n"));
|
||||
fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at runtime\n"));
|
||||
fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but executable\n"));
|
||||
fprintf (file, _(" -z loadfltr\t\tMark object requiring immediate process\n"));
|
||||
fprintf (file, _(" -z nocombreloc\tDon't merge dynamic relocs into one section\n"));
|
||||
fprintf (file, _(" -z nocopyreloc\tDon't create copy relocs\n"));
|
||||
fprintf (file, _(" -z nodefaultlib\tMark object not to use default search paths\n"));
|
||||
fprintf (file, _(" -z nodelete\t\tMark DSO non-deletable at runtime\n"));
|
||||
fprintf (file, _(" -z nodlopen\t\tMark DSO not available to dlopen\n"));
|
||||
fprintf (file, _(" -z nodump\t\tMark DSO not available to dldump\n"));
|
||||
fprintf (file, _(" -z now\t\tMark object non-lazy runtime binding\n"));
|
||||
fprintf (file, _(" -z origin\t\tMark object requiring immediate \$ORIGIN processing\n"));
|
||||
fprintf (file, _("\t\t\t at runtime\n"));
|
||||
fprintf (file, _(" -z origin\t\tMark object requiring immediate \$ORIGIN processing\n\t\t\t at runtime\n"));
|
||||
fprintf (file, _(" -z KEYWORD\t\tIgnored for Solaris compatibility\n"));
|
||||
EOF
|
||||
fi
|
||||
@ -1589,7 +1718,7 @@ struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
|
||||
${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
|
||||
"${EMULATION_NAME}",
|
||||
"${OUTPUT_FORMAT}",
|
||||
${LDEMUL_FINISH-NULL},
|
||||
${LDEMUL_FINISH-gld${EMULATION_NAME}_finish},
|
||||
${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
|
||||
${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
|
||||
${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user