# This shell script emits a C file. -*- C -*-
-# Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004
+# Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+# 2004, 2005, 2007, 2008
# Free Software Foundation, Inc.
#
-# This file is part of GLD, the Gnu Linker.
+# This file is part of the GNU Binutils.
#
# 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
+# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
#
# 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.
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
#
# This file is sourced from elf32.em, and defines extra arm-elf
# specific routines.
#
-test -z $TARGET2_TYPE && TARGET2_TYPE="rel"
-cat >>e${EMULATION_NAME}.c <<EOF
+test -z "$TARGET2_TYPE" && TARGET2_TYPE="rel"
+fragment <<EOF
+
+#include "elf/arm.h"
-static int no_pipeline_knowledge = 0;
static char *thumb_entry_symbol = NULL;
static bfd *bfd_for_interwork;
static int byteswap_code = 0;
static int target1_is_rel = 0${TARGET1_IS_REL};
static char *target2_type = "${TARGET2_TYPE}";
+static int fix_v4bx = 0;
+static int use_blx = 0;
+static bfd_arm_vfp11_fix vfp11_denorm_fix = BFD_ARM_VFP11_FIX_DEFAULT;
+static int no_enum_size_warning = 0;
+static int pic_veneer = 0;
static void
gld${EMULATION_NAME}_before_parse (void)
static void
arm_elf_after_open (void)
{
- if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
+ if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
{
/* The arm backend needs special fields in the output hash structure.
These will only be created if the output format is an arm format,
static void
arm_elf_set_bfd_for_interworking (lang_statement_union_type *statement)
{
- if (statement->header.type == lang_input_section_enum
- && !statement->input_section.ifile->just_syms_flag
- && (statement->input_section.section->flags & SEC_EXCLUDE) == 0)
+ if (statement->header.type == lang_input_section_enum)
{
asection *i = statement->input_section.section;
- asection *output_section = i->output_section;
-
- ASSERT (output_section->owner == output_bfd);
- if ((output_section->flags & SEC_HAS_CONTENTS) != 0
- && (i->flags & SEC_NEVER_LOAD) == 0
- && ! i->owner->output_has_begun)
+ if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag
+ && (i->flags & SEC_EXCLUDE) == 0)
{
- bfd_for_interwork = i->owner;
- bfd_for_interwork->output_has_begun = TRUE;
+ asection *output_section = i->output_section;
+
+ ASSERT (output_section->owner == link_info.output_bfd);
+
+ /* Don't attach the interworking stubs to a dynamic object, to
+ an empty section, etc. */
+ if ((output_section->flags & SEC_HAS_CONTENTS) != 0
+ && (i->flags & SEC_NEVER_LOAD) == 0
+ && ! (i->owner->flags & DYNAMIC)
+ && ! i->owner->output_has_begun)
+ {
+ bfd_for_interwork = i->owner;
+ bfd_for_interwork->output_has_begun = TRUE;
+ }
}
}
}
{
bfd *tem;
- /* Call the standard elf routine. */
- gld${EMULATION_NAME}_before_allocation ();
-
if (link_info.input_bfds != NULL)
{
/* The interworking bfd must be the last one in the link. */
if (bfd_for_interwork != NULL)
bfd_elf32_arm_get_bfd_for_interworking (bfd_for_interwork, &link_info);
}
- /* We should be able to set the size of the interworking stub section. */
- /* Here we rummage through the found bfds to collect glue information. */
- /* FIXME: should this be based on a command line option? krk@cygnus.com */
- {
- LANG_FOR_EACH_INPUT_STATEMENT (is)
- {
- if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, & link_info,
- no_pipeline_knowledge,
- byteswap_code))
- {
+ bfd_elf32_arm_set_byteswap_code (&link_info, byteswap_code);
+
+ /* Choose type of VFP11 erratum fix, or warn if specified fix is unnecessary
+ due to architecture version. */
+ bfd_elf32_arm_set_vfp11_fix (link_info.output_bfd, &link_info);
+
+ /* We should be able to set the size of the interworking stub section. We
+ can't do it until later if we have dynamic sections, though. */
+ if (! elf_hash_table (&link_info)->dynamic_sections_created)
+ {
+ /* Here we rummage through the found bfds to collect glue information. */
+ LANG_FOR_EACH_INPUT_STATEMENT (is)
+ {
+ /* Initialise mapping tables for code/data. */
+ bfd_elf32_arm_init_maps (is->the_bfd);
+
+ if (!bfd_elf32_arm_process_before_allocation (is->the_bfd,
+ &link_info)
+ || !bfd_elf32_arm_vfp11_erratum_scan (is->the_bfd, &link_info))
/* xgettext:c-format */
einfo (_("Errors encountered processing file %s"), is->filename);
- }
- }
- }
+ }
+ }
+
+ /* Call the standard elf routine. */
+ gld${EMULATION_NAME}_before_allocation ();
/* We have seen it all. Allocate it, and carry on. */
bfd_elf32_arm_allocate_interworking_sections (& link_info);
}
+static void
+arm_elf_after_allocation (void)
+{
+ /* Call the standard elf routine. */
+ after_allocation_default ();
+
+ {
+ LANG_FOR_EACH_INPUT_STATEMENT (is)
+ {
+ /* Figure out where VFP11 erratum veneers (and the labels returning
+ from same) have been placed. */
+ bfd_elf32_arm_vfp11_fix_veneer_locations (is->the_bfd, &link_info);
+ }
+ }
+}
+
static void
arm_elf_finish (void)
{
/* Call the elf32.em routine. */
gld${EMULATION_NAME}_finish ();
- if (thumb_entry_symbol == NULL)
- return;
+ if (thumb_entry_symbol)
+ {
+ h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
+ FALSE, FALSE, TRUE);
+ }
+ else
+ {
+ struct elf_link_hash_entry * eh;
+
+ if (!entry_symbol.name)
+ return;
+
+ h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name,
+ FALSE, FALSE, TRUE);
+ eh = (struct elf_link_hash_entry *)h;
+ if (!h || ELF_ST_TYPE(eh->type) != STT_ARM_TFUNC)
+ return;
+ }
- h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
- FALSE, FALSE, TRUE);
if (h != (struct bfd_link_hash_entry *) NULL
&& (h->type == bfd_link_hash_defined
/* Special procesing is required for a Thumb entry symbol. The
bottom bit of its address must be set. */
val = (h->u.def.value
- + bfd_get_section_vma (output_bfd,
+ + bfd_get_section_vma (link_info.output_bfd,
h->u.def.section->output_section)
+ h->u.def.section->output_offset);
sprintf_vma (buffer + 2, val);
- if (entry_symbol.name != NULL && entry_from_cmdline)
+ if (thumb_entry_symbol != NULL && entry_symbol.name != NULL
+ && entry_from_cmdline)
einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
thumb_entry_symbol, entry_symbol.name);
entry_symbol.name = buffer;
}
else
- einfo (_("%P: warning: connot find thumb start symbol %s\n"),
+ einfo (_("%P: warning: cannot find thumb start symbol %s\n"),
thumb_entry_symbol);
}
-/* This is a convenitent point to tell BFD about target specific flags.
+/* This is a convenient point to tell BFD about target specific flags.
After the output has been created, but before inputs are read. */
static void
arm_elf_create_output_section_statements (void)
{
- bfd_elf32_arm_set_target_relocs (&link_info, target1_is_rel, target2_type);
+ bfd_elf32_arm_set_target_relocs (link_info.output_bfd, &link_info,
+ target1_is_rel,
+ target2_type, fix_v4bx, use_blx,
+ vfp11_denorm_fix, no_enum_size_warning,
+ pic_veneer);
}
EOF
#define OPTION_TARGET1_REL 303
#define OPTION_TARGET1_ABS 304
#define OPTION_TARGET2 305
+#define OPTION_FIX_V4BX 306
+#define OPTION_USE_BLX 307
+#define OPTION_VFP11_DENORM_FIX 308
+#define OPTION_NO_ENUM_SIZE_WARNING 309
+#define OPTION_PIC_VENEER 310
+#define OPTION_FIX_V4BX_INTERWORKING 311
'
PARSE_AND_LIST_SHORTOPTS=p
{ "target1-rel", no_argument, NULL, OPTION_TARGET1_REL},
{ "target1-abs", no_argument, NULL, OPTION_TARGET1_ABS},
{ "target2", required_argument, NULL, OPTION_TARGET2},
+ { "fix-v4bx", no_argument, NULL, OPTION_FIX_V4BX},
+ { "fix-v4bx-interworking", no_argument, NULL, OPTION_FIX_V4BX_INTERWORKING},
+ { "use-blx", no_argument, NULL, OPTION_USE_BLX},
+ { "vfp11-denorm-fix", required_argument, NULL, OPTION_VFP11_DENORM_FIX},
+ { "no-enum-size-warning", no_argument, NULL, OPTION_NO_ENUM_SIZE_WARNING},
+ { "pic-veneer", no_argument, NULL, OPTION_PIC_VENEER},
'
PARSE_AND_LIST_OPTIONS='
- fprintf (file, _(" -p --no-pipeline-knowledge Stop the linker knowing about the pipeline length\n"));
- fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n"));
- fprintf (file, _(" --be8 Oputput BE8 format image\n"));
- fprintf (file, _(" --target1=rel Interpret R_ARM_TARGET1 as R_ARM_REL32\n"));
- fprintf (file, _(" --target1=abs Interpret R_ARM_TARGET1 as R_ARM_ABS32\n"));
- fprintf (file, _(" --target2=<type> Specify definition of R_ARM_TARGET2\n"));
+ fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n"));
+ fprintf (file, _(" --be8 Oputput BE8 format image\n"));
+ fprintf (file, _(" --target1=rel Interpret R_ARM_TARGET1 as R_ARM_REL32\n"));
+ fprintf (file, _(" --target1=abs Interpret R_ARM_TARGET1 as R_ARM_ABS32\n"));
+ fprintf (file, _(" --target2=<type> Specify definition of R_ARM_TARGET2\n"));
+ fprintf (file, _(" --fix-v4bx Rewrite BX rn as MOV pc, rn for ARMv4\n"));
+ fprintf (file, _(" --fix-v4bx-interworking Rewrite BX rn branch to ARMv4 interworking veneer\n"));
+ fprintf (file, _(" --use-blx Enable use of BLX instructions\n"));
+ fprintf (file, _(" --vfp11-denorm-fix Specify how to fix VFP11 denorm erratum\n"));
+ fprintf (file, _(" --no-enum-size-warning Don'\''t warn about objects with incompatible"
+ " enum sizes\n"));
+ fprintf (file, _(" --pic-veneer Always generate PIC interworking veneers\n"));
'
PARSE_AND_LIST_ARGS_CASES='
case '\'p\'':
- no_pipeline_knowledge = 1;
+ /* Only here for backwards compatibility. */
break;
case OPTION_THUMB_ENTRY:
case OPTION_TARGET2:
target2_type = optarg;
break;
+
+ case OPTION_FIX_V4BX:
+ fix_v4bx = 1;
+ break;
+
+ case OPTION_FIX_V4BX_INTERWORKING:
+ fix_v4bx = 2;
+ break;
+
+ case OPTION_USE_BLX:
+ use_blx = 1;
+ break;
+
+ case OPTION_VFP11_DENORM_FIX:
+ if (strcmp (optarg, "none") == 0)
+ vfp11_denorm_fix = BFD_ARM_VFP11_FIX_NONE;
+ else if (strcmp (optarg, "scalar") == 0)
+ vfp11_denorm_fix = BFD_ARM_VFP11_FIX_SCALAR;
+ else if (strcmp (optarg, "vector") == 0)
+ vfp11_denorm_fix = BFD_ARM_VFP11_FIX_VECTOR;
+ else
+ einfo (_("Unrecognized VFP11 fix type '\''%s'\''.\n"), optarg);
+ break;
+
+ case OPTION_NO_ENUM_SIZE_WARNING:
+ no_enum_size_warning = 1;
+ break;
+
+ case OPTION_PIC_VENEER:
+ pic_veneer = 1;
+ break;
'
# We have our own after_open and before_allocation functions, but they call
# the standard routines, so give them a different name.
LDEMUL_AFTER_OPEN=arm_elf_after_open
LDEMUL_BEFORE_ALLOCATION=arm_elf_before_allocation
+LDEMUL_AFTER_ALLOCATION=arm_elf_after_allocation
LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=arm_elf_create_output_section_statements
# Replace the elf before_parse function with our own.
projects / deliverable / binutils-gdb.git / blobdiff