* emultempl/miposecoff.em: New file.

	* emulparams/mipsidt.sh (TEMPLATE_NAME): Set to mipsecoff.
	* emulparams/mipsidtl.sh (TEMPLATE_NAME): Likewise.
	* scripttempl/mips.sc: Put .rel.sdata sections in .text, and
	provide __runtime_reloc_start and __runtime_reloc_stop if they are
	used.   Align _fdata to a 16 byte boundary.
	* Makefile.in (emipsidt.c): Depend upon mipsecoff.em rather than
	generic.em.
	(emipsidtl.c): Likewise.
	(check): Pass CC_FOR_HOST and CFLAGS_FOR_HOST to runtest.

2 files changed, 231 insertions, 0 deletions

diff --git a/ld/emultempl/.Sanitize b/ld/emultempl/.Sanitize
index 7261d4a..8080c68 100644
--- a/ld/emultempl/.Sanitize
+++ b/ld/emultempl/.Sanitize
@@ -34,6 +34,7 @@ hppaelf.em
 linux.em
 lnk960.em
 m88kbcs.em
+mipsecoff.em
 sunos.em
 vanilla.em
 
diff --git a/ld/emultempl/mipsecoff.em b/ld/emultempl/mipsecoff.em
new file mode 100644
index 0000000..6f43305
--- /dev/null
+++ b/ld/emultempl/mipsecoff.em
@@ -0,0 +1,230 @@
+# This shell script emits a C file. -*- C -*-
+# It does some substitutions.
+cat >e${EMULATION_NAME}.c <<EOF
+/* This file is is generated by a shell script.  DO NOT EDIT! */
+
+/* Handle embedded relocs for MIPS.
+   Copyright 1994 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor <ian@cygnus.com> based on generic.em.
+
+This file is part of GLD, the Gnu Linker.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define TARGET_IS_${EMULATION_NAME}
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "bfdlink.h"
+
+#include "ld.h"
+#include "config.h"
+#include "ldmain.h"
+#include "ldemul.h"
+#include "ldfile.h"
+#include "ldmisc.h"
+
+static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
+static void gld${EMULATION_NAME}_after_open PARAMS ((void));
+static void check_sections PARAMS ((bfd *, asection *, PTR));
+static void gld${EMULATION_NAME}_after_allocation PARAMS ((void));
+static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
+
+static void
+gld${EMULATION_NAME}_before_parse()
+{
+#ifndef TARGET_			/* I.e., if not generic.  */
+  ldfile_output_architecture = bfd_arch_${ARCH};
+#endif /* not TARGET_ */
+}
+
+/* This function is run after all the input files have been opened.
+   We create a .rel.sdata section for each input file with a non zero
+   .sdata 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 will only do the right thing if all the input files
+   have been compiled using -membedded-pic.  */
+
+static void
+gld${EMULATION_NAME}_after_open ()
+{
+  bfd *abfd;
+
+  if (! command_line.embedded_relocs
+      || link_info.relocateable)
+    return;
+
+  for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
+    {
+      asection *datasec;
+
+      datasec = bfd_get_section_by_name (abfd, ".sdata");
+
+      /* 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, ".rel.sdata");
+	  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 * 4))
+	    einfo ("%F%B: can not create .rel.sdata section: %E");
+	}
+
+      /* 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);
+    }
+}
+
+/* Check that of the data sections, only the .sdata section has
+   relocs.  This is called via bfd_map_over_sections.  */
+
+static void
+check_sections (abfd, sec, sdatasec)
+     bfd *abfd;
+     asection *sec;
+     PTR sdatasec;
+{
+  if ((bfd_get_section_flags (abfd, sec) & SEC_CODE) == 0
+      && sec != (asection *) sdatasec
+      && sec->reloc_count != 0)
+    einfo ("%F%X: section %s has relocs; can not use --embedded-relocs",
+	   abfd, bfd_get_section_name (abfd, sec));
+}
+
+/* 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.  */
+
+static void
+gld${EMULATION_NAME}_after_allocation ()
+{
+  bfd *abfd;
+
+  if (! command_line.embedded_relocs
+      || link_info.relocateable)
+    return;
+
+  for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
+    {
+      asection *datasec, *relsec;
+      char *errmsg;
+
+      datasec = bfd_get_section_by_name (abfd, ".sdata");
+
+      if (datasec == NULL || datasec->reloc_count == 0)
+	continue;
+
+      relsec = bfd_get_section_by_name (abfd, ".rel.sdata");
+      ASSERT (relsec != NULL);
+
+      if (! bfd_mips_ecoff_create_embedded_relocs (abfd, &link_info,
+						   datasec, relsec,
+						   &errmsg))
+	{
+	  if (errmsg == NULL)
+	    einfo ("%B%X: can not create runtime reloc information: %E",
+		   abfd);
+	  else
+	    einfo ("%X%B: can not create runtime reloc information: %s",
+		   abfd, errmsg);
+	}
+    }
+}
+
+static char *
+gld${EMULATION_NAME}_get_script(isfile)
+     int *isfile;
+EOF
+
+if test -n "$COMPILE_IN"
+then
+# Scripts compiled in.
+
+# sed commands to quote an ld script as a C string.
+sc="-f ${srcdir}/emultempl/stringify.sed"
+
+cat >>e${EMULATION_NAME}.c <<EOF
+{			     
+  *isfile = 0;
+
+  if (link_info.relocateable == true && config.build_constructors == true)
+    return
+EOF
+sed $sc ldscripts/${EMULATION_NAME}.xu                     >> e${EMULATION_NAME}.c
+echo '  ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
+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${EMULATION_NAME}.c
+echo '  ; else if (!config.magic_demand_paged) return'     >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xn                     >> 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
+
+else
+# Scripts read from the filesystem.
+
+cat >>e${EMULATION_NAME}.c <<EOF
+{			     
+  *isfile = 1;
+
+  if (link_info.relocateable == true && config.build_constructors == true)
+    return "ldscripts/${EMULATION_NAME}.xu";
+  else if (link_info.relocateable == true)
+    return "ldscripts/${EMULATION_NAME}.xr";
+  else if (!config.text_read_only)
+    return "ldscripts/${EMULATION_NAME}.xbn";
+  else if (!config.magic_demand_paged)
+    return "ldscripts/${EMULATION_NAME}.xn";
+  else
+    return "ldscripts/${EMULATION_NAME}.x";
+}
+EOF
+
+fi
+
+cat >>e${EMULATION_NAME}.c <<EOF
+
+struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = 
+{
+  gld${EMULATION_NAME}_before_parse,
+  syslib_default,
+  hll_default,
+  after_parse_default,
+  gld${EMULATION_NAME}_after_open,
+  gld${EMULATION_NAME}_after_allocation,
+  set_output_arch_default,
+  ldemul_default_target,
+  before_allocation_default,
+  gld${EMULATION_NAME}_get_script,
+  "${EMULATION_NAME}",
+  "${OUTPUT_FORMAT}"
+};
+EOF