* Makefile.am: Bfin support.

	* Makefile.in: Regenerated.
	* aclocal.m4: Regenerated.
	* configure.tgt: Bfin support.
	* emulparams/bfin.sh: New file.
	* emultempl/bfin.em: New file.

1 files changed, 174 insertions, 0 deletions

diff --git a/ld/emultempl/bfin.em b/ld/emultempl/bfin.em
new file mode 100644
index 0000000..1c1cd8d
--- /dev/null
+++ b/ld/emultempl/bfin.em
@@ -0,0 +1,174 @@
+# This shell script emits a C file. -*- C -*-
+#   Copyright 2000, 2001, 2003 Free Software Foundation, Inc.
+#   Written by Michael Sokolov <msokolov@ivan.Harhan.ORG>, based on armelf.em
+#
+# This file is part of GLD, the Gnu Linker.
+#
+# 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
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# 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 some extra routines for bfin
+# embedded systems using ELF and for some other systems using bfin ELF.  While
+# it is sourced from elf32.em for all bfin ELF configurations, here we include
+# only the features we want depending on the configuration.
+
+case ${target} in
+  bfin*-*-elf)
+    echo "#define SUPPORT_EMBEDDED_RELOCS" >>e${EMULATION_NAME}.c
+    ;;
+esac
+
+cat >>e${EMULATION_NAME}.c <<EOF
+
+#ifdef SUPPORT_EMBEDDED_RELOCS
+static void check_sections (bfd *, asection *, void *);
+#endif
+
+/* This function is run after all the input files have been opened.  */
+
+static void
+bfin_elf_after_open (void)
+{
+  /* Call the standard elf routine.  */
+  gld${EMULATION_NAME}_after_open ();
+
+#ifdef SUPPORT_EMBEDDED_RELOCS
+  if (command_line.embedded_relocs
+      && (! link_info.relocatable))
+    {
+      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 *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, 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.  */
+
+static void
+check_sections (bfd *abfd, asection *sec, void *datasec)
+{
+  if ((bfd_get_section_flags (abfd, sec) & SEC_DATA)
+      && sec != datasec
+      && sec->reloc_count != 0)
+    einfo ("%B%X: section %s has relocs; can not use --embedded-relocs\n",
+	   abfd, bfd_get_section_name (abfd, sec));
+}
+
+#endif /* SUPPORT_EMBEDDED_RELOCS */
+
+/* This function is called after the section sizes and offsets have
+   been set.  */
+
+static void
+bfin_elf_after_allocation (void)
+{
+  /* Call the standard elf routine.  */
+  after_allocation_default ();
+
+#ifdef SUPPORT_EMBEDDED_RELOCS
+  if (command_line.embedded_relocs
+      && (! link_info.relocatable))
+    {
+      bfd *abfd;
+
+      /* 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)
+	{
+	  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_elf_flavour)
+	    {
+	      if (! bfd_bfin_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
+	    abort ();
+	}
+    }
+#endif /* SUPPORT_EMBEDDED_RELOCS */
+}
+
+EOF
+
+# We have our own after_open and after_allocation functions, but they call
+# the standard routines, so give them a different name.
+LDEMUL_AFTER_OPEN=bfin_elf_after_open
+LDEMUL_AFTER_ALLOCATION=bfin_elf_after_allocation