# 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.
-#
-# This file is sourced from elf32.em, and defines extra m68k ELF
-# specific routines.
-#
+# This file is sourced from elf32.em, and defines some extra routines for m68k
+# embedded systems using ELF and for some other systems using m68k ELF. While
+# it is sourced from elf32.em for all m68k ELF configurations, here we include
+# only the features we want depending on the configuration.
+
+case ${target} in
+ m68*-*-elf)
+ echo "#define SUPPORT_EMBEDDED_RELOCS" >>e${EMULATION_NAME}.c
+ ;;
+esac
+
cat >>e${EMULATION_NAME}.c <<EOF
-static void m68k_elf_after_open PARAMS((void));
+static void m68k_elf_after_open PARAMS ((void));
+#ifdef SUPPORT_EMBEDDED_RELOCS
static void check_sections PARAMS ((bfd *, asection *, PTR));
+#endif
static void m68k_elf_after_allocation PARAMS ((void));
-/* This function is run after all the input files have been opened.
- We create a .emreloc section for each input file with a non zero
- .data section. The BFD backend will fill in these sections with
- magic numbers which can be used to relocate the data section at run
- time. */
+/* This function is run after all the input files have been opened. */
static void
m68k_elf_after_open ()
{
- bfd *abfd;
-
/* Call the standard elf routine. */
gld${EMULATION_NAME}_after_open ();
- if (! command_line.embedded_relocs
- || link_info.relocateable)
- return;
-
- for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
+#ifdef SUPPORT_EMBEDDED_RELOCS
+ if (command_line.embedded_relocs
+ && (! link_info.relocateable))
{
- asection *datasec;
-
- /* As first-order business, make sure that each input BFD is ELF. It
- better be, as we are directly calling a ELF backend function. */
- if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
- einfo ("%F%B: all input objects must be ELF for --embedded-relocs\n");
-
- datasec = bfd_get_section_by_name (abfd, ".data");
-
- /* Note that we assume that the reloc_count field has already
- been set up. We could call bfd_get_reloc_upper_bound, but
- that returns the size of a memory buffer rather than a reloc
- count. We do not want to call bfd_canonicalize_reloc,
- because although it would always work it would force us to
- read in the relocs into BFD canonical form, which would waste
- a significant amount of time and memory. */
- if (datasec != NULL && datasec->reloc_count > 0)
+ bfd *abfd;
+
+ /* In the embedded relocs mode we create a .emreloc section for each
+ input file with a nonzero .data section. The BFD backend will fill in
+ these sections with magic numbers which can be used to relocate the
+ data section at run time. */
+ for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
{
- asection *relsec;
-
- relsec = bfd_make_section (abfd, ".emreloc");
- if (relsec == NULL
- || ! bfd_set_section_flags (abfd, relsec,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY))
- || ! bfd_set_section_alignment (abfd, relsec, 2)
- || ! bfd_set_section_size (abfd, relsec,
- datasec->reloc_count * 12))
- einfo ("%F%B: can not create .emreloc section: %E\n");
+ asection *datasec;
+
+ /* As first-order business, make sure that each input BFD is either
+ COFF or ELF. We need to call a special BFD backend function to
+ generate the embedded relocs, and we have such functions only for
+ COFF and ELF. */
+ if (bfd_get_flavour (abfd) != bfd_target_coff_flavour
+ && bfd_get_flavour (abfd) != bfd_target_elf_flavour)
+ einfo ("%F%B: all input objects must be COFF or ELF for --embedded-relocs\n");
+
+ datasec = bfd_get_section_by_name (abfd, ".data");
+
+ /* Note that we assume that the reloc_count field has already
+ been set up. We could call bfd_get_reloc_upper_bound, but
+ that returns the size of a memory buffer rather than a reloc
+ count. We do not want to call bfd_canonicalize_reloc,
+ because although it would always work it would force us to
+ read in the relocs into BFD canonical form, which would waste
+ a significant amount of time and memory. */
+ if (datasec != NULL && datasec->reloc_count > 0)
+ {
+ asection *relsec;
+
+ relsec = bfd_make_section (abfd, ".emreloc");
+ if (relsec == NULL
+ || ! bfd_set_section_flags (abfd, relsec,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY))
+ || ! bfd_set_section_alignment (abfd, relsec, 2)
+ || ! bfd_set_section_size (abfd, relsec,
+ datasec->reloc_count * 12))
+ einfo ("%F%B: can not create .emreloc section: %E\n");
+ }
+
+ /* Double check that all other data sections are empty, as is
+ required for embedded PIC code. */
+ bfd_map_over_sections (abfd, check_sections, (PTR) datasec);
}
-
- /* Double check that all other data sections are empty, as is
- required for embedded PIC code. */
- bfd_map_over_sections (abfd, check_sections, (PTR) datasec);
}
+#endif /* SUPPORT_EMBEDDED_RELOCS */
}
+#ifdef SUPPORT_EMBEDDED_RELOCS
/* Check that of the data sections, only the .data section has
relocs. This is called via bfd_map_over_sections. */
abfd, bfd_get_section_name (abfd, sec));
}
+#endif /* SUPPORT_EMBEDDED_RELOCS */
+
/* This function is called after the section sizes and offsets have
- been set. If we are generating embedded relocs, it calls a special
- BFD backend routine to do the work. */
+ been set. */
static void
m68k_elf_after_allocation ()
{
- bfd *abfd;
-
/* Call the standard elf routine. */
gld${EMULATION_NAME}_before_allocation ();
- if (! command_line.embedded_relocs
- || link_info.relocateable)
- return;
-
- for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
+#ifdef SUPPORT_EMBEDDED_RELOCS
+ if (command_line.embedded_relocs
+ && (! link_info.relocateable))
{
- asection *datasec, *relsec;
- char *errmsg;
-
- datasec = bfd_get_section_by_name (abfd, ".data");
-
- if (datasec == NULL || datasec->reloc_count == 0)
- continue;
-
- relsec = bfd_get_section_by_name (abfd, ".emreloc");
- ASSERT (relsec != NULL);
+ bfd *abfd;
- if (! bfd_m68k_elf32_create_embedded_relocs (abfd, &link_info,
- datasec, relsec,
- &errmsg))
+ /* If we are generating embedded relocs, call a special BFD backend
+ routine to do the work. */
+ for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
{
- if (errmsg == NULL)
- einfo ("%B%X: can not create runtime reloc information: %E\n",
- abfd);
+ asection *datasec, *relsec;
+ char *errmsg;
+
+ datasec = bfd_get_section_by_name (abfd, ".data");
+
+ if (datasec == NULL || datasec->reloc_count == 0)
+ continue;
+
+ relsec = bfd_get_section_by_name (abfd, ".emreloc");
+ ASSERT (relsec != NULL);
+
+ if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
+ {
+ if (! bfd_m68k_coff_create_embedded_relocs (abfd, &link_info,
+ datasec, relsec,
+ &errmsg))
+ {
+ if (errmsg == NULL)
+ einfo ("%B%X: can not create runtime reloc information: %E\n",
+ abfd);
+ else
+ einfo ("%X%B: can not create runtime reloc information: %s\n",
+ abfd, errmsg);
+ }
+ }
+ else if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+ {
+ if (! bfd_m68k_elf32_create_embedded_relocs (abfd, &link_info,
+ datasec, relsec,
+ &errmsg))
+ {
+ if (errmsg == NULL)
+ einfo ("%B%X: can not create runtime reloc information: %E\n",
+ abfd);
+ else
+ einfo ("%X%B: can not create runtime reloc information: %s\n",
+ abfd, errmsg);
+ }
+ }
else
- einfo ("%X%B: can not create runtime reloc information: %s\n",
- abfd, errmsg);
+ abort ();
}
}
+#endif /* SUPPORT_EMBEDDED_RELOCS */
}
EOF
projects / binutils-gdb.git / commitdiff