This is the mail archive of the
binutils@sources.redhat.com
mailing list for the binutils project.
Re: PATCH: Generate code for Itanium
On Fri, Oct 10, 2003 at 01:01:07PM +0100, Nick Clifton wrote:
> Hi H.J.
>
> >> Is there really nowhere better to put arch-specific ld options?
> >> (If there isn't there should be, and IMHO this seems like a good
> >> time to do that.)
> >
> > I am not aware there is a better way. Any suggestion is welcome.
>
> How about holding the variable in a static in the emulation source
> code and then in one of the emulation functions passing this flag into
> the ia-64 specific code ? For example see how ld/emultempl/armelf.em
> handles the no_pipeline_knowledge switch.
>
Thanks. Here is a new patch.
H.J.
-----
bfd/
2003-10-10 H.J. Lu <hongjiu.lu@intel.com>
* bfd-in.h (bfd_elf32_ia64_after_parse): New prototype.
(bfd_elf64_ia64_after_parse): Likewise.
* bfd-in2.h: Regenerated.
* elfxx-ia64.c (oor_ip): New.
(oor_branch_size): Likewise.
(bfd_elfNN_ia64_after_parse): Likewise.
(elfNN_ia64_relax_section): Use oor_ip if oor_branch_size
equals sizeof (oor_ip).
ld/
2003-10-10 H.J. Lu <hongjiu.lu@intel.com>
* Makefile.am (eelf64_ia64.c): Also depend on
$(srcdir)/emultempl/ia64elf.em.
* Makefile.in: Regenerated.
* emulparams/elf64_ia64.sh (EXTRA_EM_FILE): Set to ia64elf.
* emultempl/ia64elf.em: New.
--- binutils/bfd/bfd-in.h.itanium 2003-08-28 07:52:39.000000000 -0700
+++ binutils/bfd/bfd-in.h 2003-10-10 09:06:15.000000000 -0700
@@ -824,3 +824,9 @@ extern int bfd_ticoff_get_section_load_p
extern bfd_vma bfd_h8300_pad_address
(bfd *, bfd_vma);
+/* IA64 Itanium code generation. Called from linker. */
+extern void bfd_elf32_ia64_after_parse
+ (int);
+
+extern void bfd_elf64_ia64_after_parse
+ (int);
--- binutils/bfd/elfxx-ia64.c.itanium 2003-09-30 15:21:05.000000000 -0700
+++ binutils/bfd/elfxx-ia64.c 2003-10-10 09:10:32.000000000 -0700
@@ -656,6 +666,28 @@ static const bfd_byte oor_brl[16] =
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
0x00, 0x00, 0x00, 0xc0
};
+
+static const bfd_byte oor_ip[48] =
+{
+ 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
+ 0x01, 0x00, 0x00, 0x60,
+ 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
+ 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
+ 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
+ 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
+ 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
+ 0x60, 0x00, 0x80, 0x00 /* br b6;; */
+};
+
+static size_t oor_branch_size = sizeof (oor_brl);
+
+void
+bfd_elfNN_ia64_after_parse (int itanium)
+{
+ oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
+}
+
/* These functions do relaxation for IA-64 ELF. */
@@ -891,9 +923,7 @@ elfNN_ia64_relax_section (abfd, sec, lin
if (tsec == ia64_info->plt_sec)
size = sizeof (plt_full_entry);
else
- {
- size = sizeof (oor_brl);
- }
+ size = oor_branch_size;
/* Resize the current section to make room for the new branch. */
trampoff = (sec->_cooked_size + 15) & (bfd_vma) -16;
@@ -914,10 +944,22 @@ elfNN_ia64_relax_section (abfd, sec, lin
}
else
{
- memcpy (contents + trampoff, oor_brl, size);
- irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
- R_IA64_PCREL60B);
- irel->r_offset = trampoff + 2;
+ if (oor_branch_size == sizeof (oor_ip))
+ {
+ memcpy (contents + trampoff, oor_ip, size);
+ irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
+ R_IA64_PCREL64I);
+ irel->r_addend -= 16;
+ irel->r_offset = trampoff + 2;
+ }
+ else
+ {
+ memcpy (contents + trampoff, oor_brl, size);
+ irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
+ R_IA64_PCREL60B);
+ irel->r_offset = trampoff + 2;
+ }
+
}
/* Record the fixup so we don't do it again this section. */
--- binutils/ld/Makefile.am.itanium 2003-08-15 23:22:43.000000000 -0700
+++ binutils/ld/Makefile.am 2003-10-08 12:39:40.000000000 -0700
@@ -789,12 +789,14 @@ eelf64_aix.c: $(srcdir)/emulparams/elf64
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf64_aix "$(tdir_elf64_aix)"
eelf64_ia64.c: $(srcdir)/emulparams/elf64_ia64.sh \
- $(srcdir)/emultempl/elf32.em $(srcdir)/emultempl/needrelax.em \
+ $(srcdir)/emultempl/elf32.em $(srcdir)/emultempl/ia64elf.em \
+ $(srcdir)/emultempl/needrelax.em \
$(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf64_ia64 "$(tdir_elf64_ia64)"
eelf64_ia64_fbsd.c: $(srcdir)/emulparams/elf64_ia64_fbsd.sh \
$(srcdir)/emulparams/elf64_ia64.sh \
- $(srcdir)/emultempl/elf32.em $(srcdir)/emultempl/needrelax.em \
+ $(srcdir)/emultempl/elf32.em $(srcdir)/emultempl/ia64elf.em \
+ $(srcdir)/emultempl/needrelax.em \
$(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf64_ia64_fbsd "$(tdir_elf64_ia64_fbsd)"
eelf64_s390.c: $(srcdir)/emulparams/elf64_s390.sh \
--- binutils/ld/Makefile.in.itanium 2003-08-15 23:22:43.000000000 -0700
+++ binutils/ld/Makefile.in 2003-10-08 12:39:59.000000000 -0700
@@ -1,4 +1,4 @@
-# Makefile.in generated automatically by automake 1.4-p5 from Makefile.am
+# Makefile.in generated automatically by automake 1.4-p6 from Makefile.am
# Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
@@ -888,7 +888,7 @@ uninstall-man:
all-recursive install-data-recursive install-exec-recursive \
installdirs-recursive install-recursive uninstall-recursive install-info-recursive \
check-recursive installcheck-recursive info-recursive dvi-recursive:
- @set fnord $(MAKEFLAGS); amf=$$2; \
+ @set fnord $$MAKEFLAGS; amf=$$2; \
dot_seen=no; \
target=`echo $@ | sed s/-recursive//`; \
list='$(SUBDIRS)'; for subdir in $$list; do \
@@ -908,7 +908,7 @@ check-recursive installcheck-recursive i
mostlyclean-recursive clean-recursive distclean-recursive \
maintainer-clean-recursive:
- @set fnord $(MAKEFLAGS); amf=$$2; \
+ @set fnord $$MAKEFLAGS; amf=$$2; \
dot_seen=no; \
rev=''; list='$(SUBDIRS)'; for subdir in $$list; do \
rev="$$subdir $$rev"; \
@@ -1093,7 +1093,7 @@ distclean-generic:
-test -z "$(DISTCLEANFILES)" || rm -f $(DISTCLEANFILES)
maintainer-clean-generic:
- -test -z "ldlexldeffilephdeffilepcldgramhldgramc$(MAINTAINERCLEANFILES)" || rm -f ldlexl deffileph deffilepc ldgramh ldgramc $(MAINTAINERCLEANFILES)
+ -test -z "ldlexcdeffilephdeffilepcldgramhldgramc$(MAINTAINERCLEANFILES)" || rm -f ldlexc deffileph deffilepc ldgramh ldgramc $(MAINTAINERCLEANFILES)
mostlyclean-am: mostlyclean-hdr mostlyclean-noinstPROGRAMS \
mostlyclean-compile mostlyclean-libtool \
mostlyclean-aminfo mostlyclean-tags mostlyclean-generic \
@@ -1515,12 +1515,14 @@ eelf64_aix.c: $(srcdir)/emulparams/elf64
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf64_aix "$(tdir_elf64_aix)"
eelf64_ia64.c: $(srcdir)/emulparams/elf64_ia64.sh \
- $(srcdir)/emultempl/elf32.em $(srcdir)/emultempl/needrelax.em \
+ $(srcdir)/emultempl/elf32.em $(srcdir)/emultempl/ia64elf.em \
+ $(srcdir)/emultempl/needrelax.em \
$(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf64_ia64 "$(tdir_elf64_ia64)"
eelf64_ia64_fbsd.c: $(srcdir)/emulparams/elf64_ia64_fbsd.sh \
$(srcdir)/emulparams/elf64_ia64.sh \
- $(srcdir)/emultempl/elf32.em $(srcdir)/emultempl/needrelax.em \
+ $(srcdir)/emultempl/elf32.em $(srcdir)/emultempl/ia64elf.em \
+ $(srcdir)/emultempl/needrelax.em \
$(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf64_ia64_fbsd "$(tdir_elf64_ia64_fbsd)"
eelf64_s390.c: $(srcdir)/emulparams/elf64_s390.sh \
--- binutils/ld/emulparams/elf64_ia64.sh.itanium 2003-07-07 07:12:01.000000000 -0700
+++ binutils/ld/emulparams/elf64_ia64.sh 2003-10-08 12:37:57.000000000 -0700
@@ -2,7 +2,7 @@
SCRIPT_NAME=elf
ELFSIZE=64
TEMPLATE_NAME=elf32
-EXTRA_EM_FILE=needrelax
+EXTRA_EM_FILE=ia64elf
OUTPUT_FORMAT="elf64-ia64-little"
ARCH=ia64
MACHINE=
--- binutils/ld/emultempl/ia64elf.em.itanium 2003-10-09 11:24:32.000000000 -0700
+++ binutils/ld/emultempl/ia64elf.em 2003-10-10 09:34:33.000000000 -0700
@@ -0,0 +1,61 @@
+# This shell script emits a C file. -*- C -*-
+# Copyright 2003 Free Software Foundation, Inc.
+#
+# This file is part of GLD, the Gnu Linker.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+
+# This file is sourced from elf32.em, and defines extra ia64-elf
+# specific routines.
+#
+# Define some shell vars to insert bits of code into the standard elf
+# parse_args and list_options functions.
+#
+cat >>e${EMULATION_NAME}.c <<EOF
+
+/* None zero if generating binary for Intel Itanium processor. */
+static int itanium = 0;
+
+static void
+gld${EMULATION_NAME}_after_parse (void)
+{
+ bfd_${EMULATION_NAME}_after_parse (itanium);
+}
+
+EOF
+
+PARSE_AND_LIST_PROLOGUE='
+#define OPTION_ITANIUM 300
+'
+
+PARSE_AND_LIST_LONGOPTS='
+ { "itanium", no_argument, NULL, OPTION_ITANIUM},
+'
+
+PARSE_AND_LIST_OPTIONS='
+ fprintf (file, _("\
+ --itanium Generate code for Intel Itanium processor\n"
+ ));
+'
+
+PARSE_AND_LIST_ARGS_CASES='
+ case OPTION_ITANIUM:
+ itanium = 1;
+ break;
+'
+
+LDEMUL_AFTER_PARSE=gld${EMULATION_NAME}_after_parse
+. ${srcdir}/emultempl/needrelax.em