# This shell script emits a C file. -*- C -*-
-# Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000, 2002
+# Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+# 2004, 2005
# Free Software Foundation, Inc.
#
# This file is part of GLD, the Gnu Linker.
#
# 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
-static int no_pipeline_knowledge = 0;
+#include "elf/arm.h"
+
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 void
-gld${EMULATION_NAME}_before_parse ()
+gld${EMULATION_NAME}_before_parse (void)
{
#ifndef TARGET_ /* I.e., if not generic. */
- ldfile_set_output_arch ("`echo ${ARCH}`");
+ ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
#endif /* not TARGET_ */
config.dynamic_link = ${DYNAMIC_LINK-TRUE};
config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
}
-static void arm_elf_after_open PARAMS ((void));
-
static void
-arm_elf_after_open ()
+arm_elf_after_open (void)
{
if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
{
gld${EMULATION_NAME}_after_open ();
}
-static void arm_elf_set_bfd_for_interworking
- PARAMS ((lang_statement_union_type *));
-
static void
-arm_elf_set_bfd_for_interworking (statement)
- lang_statement_union_type *statement;
+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)
+ 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 == 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;
+ }
}
}
}
-static void arm_elf_before_allocation PARAMS ((void));
-
static void
-arm_elf_before_allocation ()
+arm_elf_before_allocation (void)
{
bfd *tem;
tem->output_has_begun = FALSE;
lang_for_each_statement (arm_elf_set_bfd_for_interworking);
- ASSERT (bfd_for_interwork != NULL);
for (tem = link_info.input_bfds; tem != NULL; tem = tem->link_next)
tem->output_has_begun = FALSE;
- bfd_elf32_arm_get_bfd_for_interworking (bfd_for_interwork, &link_info);
+ /* If bfd_for_interwork is NULL, then there are no loadable sections
+ with real contents to be linked, so we are not going to have to
+ create any interworking stubs, so it is OK not to call
+ bfd_elf32_arm_get_bfd_for_interworking. */
+ 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. */
LANG_FOR_EACH_INPUT_STATEMENT (is)
{
if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, & link_info,
- no_pipeline_knowledge))
+ byteswap_code))
{
/* xgettext:c-format */
einfo (_("Errors encountered processing file %s"), is->filename);
bfd_elf32_arm_allocate_interworking_sections (& link_info);
}
-static void arm_elf_finish PARAMS ((void));
-
static void
-arm_elf_finish ()
+arm_elf_finish (void)
{
struct bfd_link_hash_entry * h;
/* Call the elf32.em routine. */
gld${EMULATION_NAME}_finish ();
- if (thumb_entry_symbol == NULL)
- return;
-
- h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
- FALSE, FALSE, TRUE);
+ 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;
+ }
+
if (h != (struct bfd_link_hash_entry *) NULL
&& (h->type == bfd_link_hash_defined
{
static char buffer[32];
bfd_vma val;
-
+
/* 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,
h->u.def.section->output_section)
+ h->u.def.section->output_offset);
-
+
val |= 1;
/* Now convert this value into a string and store it in entry_symbol
- where the lang_finish() function will pick it up. */
+ where the lang_finish() function will pick it up. */
buffer[0] = '0';
buffer[1] = 'x';
-
+
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;
thumb_entry_symbol);
}
+/* This is a convenitent 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,
+ fix_v4bx, use_blx);
+}
+
EOF
# Define some shell vars to insert bits of code into the standard elf
#
PARSE_AND_LIST_PROLOGUE='
#define OPTION_THUMB_ENTRY 301
+#define OPTION_BE8 302
+#define OPTION_TARGET1_REL 303
+#define OPTION_TARGET1_ABS 304
+#define OPTION_TARGET2 305
+#define OPTION_FIX_V4BX 306
+#define OPTION_USE_BLX 307
'
PARSE_AND_LIST_SHORTOPTS=p
-# Note we have duplicate entries for no-pipeline-knowledge in order
-# to prevent getopt_long_only from thinking that -n is a unique
-# abbreviation for --no-pipeline-knowledge.
PARSE_AND_LIST_LONGOPTS='
{ "no-pipeline-knowledge", no_argument, NULL, '\'p\''},
- { "no-pipeline-knowledge", no_argument, NULL, '\'p\''},
{ "thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
+ { "be8", no_argument, NULL, OPTION_BE8},
+ { "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},
+ { "use-blx", no_argument, NULL, OPTION_USE_BLX},
'
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, _(" --fix-v4bx Rewrite BX rn as MOV pc, rn for ARMv4\n"));
+ fprintf (file, _(" --use-blx Enable use of BLX instructions\n"));
'
PARSE_AND_LIST_ARGS_CASES='
case '\'p\'':
- no_pipeline_knowledge = 1;
+ /* Only here for backwards compatibility. */
break;
case OPTION_THUMB_ENTRY:
thumb_entry_symbol = optarg;
break;
+
+ case OPTION_BE8:
+ byteswap_code = 1;
+ break;
+
+ case OPTION_TARGET1_REL:
+ target1_is_rel = 1;
+ break;
+
+ case OPTION_TARGET1_ABS:
+ target1_is_rel = 0;
+ break;
+
+ case OPTION_TARGET2:
+ target2_type = optarg;
+ break;
+
+ case OPTION_FIX_V4BX:
+ fix_v4bx = 1;
+ break;
+
+ case OPTION_USE_BLX:
+ use_blx = 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_CREATE_OUTPUT_SECTION_STATEMENTS=arm_elf_create_output_section_statements
# Replace the elf before_parse function with our own.
LDEMUL_BEFORE_PARSE=gld"${EMULATION_NAME}"_before_parse
projects / external / binutils.git / blobdiff