+2008-07-12 Jie Zhang <jie.zhang@analog.com>
+
+ * elf.c (_bfd_elf_map_sections_to_segments): Don't put
+ executable sections into the same segment with other
+ read only sections if --sep-code.
+ * elf32-bfin.c (elf32_bfin_code_in_l1): New variable.
+ (elf32_bfin_data_in_l1): New variable.
+ (elf32_bfin_final_write_processing): New.
+ (elf32_bfin_special_sections[]): New.
+ (elf_backend_final_write_processing): Define.
+ (elf_backend_special_sections): Define.
+
2008-07-11 Andreas Schwab <schwab@suse.de>
* dwarf2.c (read_section): Take pointer to bfd_size_type instead
asection **hdrpp;
bfd_boolean phdr_in_segment = TRUE;
bfd_boolean writable;
+ bfd_boolean executable;
int tls_count = 0;
asection *first_tls = NULL;
asection *dynsec, *eh_frame_hdr;
phdr_index = 0;
maxpagesize = bed->maxpagesize;
writable = FALSE;
+ executable = FALSE;
dynsec = bfd_get_section_by_name (abfd, ".dynamic");
if (dynsec != NULL
&& (dynsec->flags & SEC_LOAD) == 0)
ends precisely on a page boundary. */
new_segment = TRUE;
}
+ else if (info->sep_code
+ && ((! executable && (hdr->flags & SEC_CODE) != 0)
+ || (executable && (hdr->flags & SEC_CODE) == 0)))
+ {
+ /* We don't want to put a executable section in a non-executable
+ segment. */
+ new_segment = TRUE;
+ }
else
{
/* Otherwise, we can use the same segment. */
{
if ((hdr->flags & SEC_READONLY) == 0)
writable = TRUE;
+ if ((hdr->flags & SEC_CODE) != 0)
+ executable = TRUE;
last_hdr = hdr;
/* .tbss sections effectively have zero size. */
if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
else
writable = FALSE;
+ if ((hdr->flags & SEC_CODE) != 0)
+ executable = TRUE;
+ else
+ executable = FALSE;
+
last_hdr = hdr;
/* .tbss sections effectively have zero size. */
if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
return (reloc_howto_type *) NULL;
}
+/* Set by ld emulation if --code-in-l1. */
+bfd_boolean elf32_bfin_code_in_l1 = 0;
+
+/* Set by ld emulation if --data-in-l1. */
+bfd_boolean elf32_bfin_data_in_l1 = 0;
+
+static void
+elf32_bfin_final_write_processing (bfd *abfd,
+ bfd_boolean linker ATTRIBUTE_UNUSED)
+{
+ if (elf32_bfin_code_in_l1)
+ elf_elfheader (abfd)->e_flags |= EF_BFIN_CODE_IN_L1;
+ if (elf32_bfin_data_in_l1)
+ elf_elfheader (abfd)->e_flags |= EF_BFIN_DATA_IN_L1;
+}
+
/* Return TRUE if the name is a local label.
bfin local labels begin with L$. */
static bfd_boolean
free (internal_relocs);
return FALSE;
}
+
+struct bfd_elf_special_section const elf32_bfin_special_sections[] =
+{
+ { ".l1.text", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { ".l1.data", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { NULL, 0, 0, 0, 0 }
+};
+
\f
#define TARGET_LITTLE_SYM bfd_elf32_bfin_vec
#define TARGET_LITTLE_NAME "elf32-bfin"
elf32_bfin_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data \
elf32_bfin_print_private_bfd_data
+#define elf_backend_final_write_processing \
+ elf32_bfin_final_write_processing
#define elf_backend_reloc_type_class elf32_bfin_reloc_type_class
#define elf_backend_can_gc_sections 1
+#define elf_backend_special_sections elf32_bfin_special_sections
#define elf_backend_can_refcount 1
#define elf_backend_want_got_plt 0
#define elf_backend_plt_readonly 1
+2008-07-12 Jie Zhang <jie.zhang@analog.com>
+
+ * readelf.c (get_machine_flags): Deal with Blackfin specific
+ flags.
+
2008-07-09 Craig Silverstein <csilvers@google.com>
* config.in: Add HAVE_ZLIB_H
decode_ARM_machine_flags (e_flags, buf);
break;
+ case EM_BLACKFIN:
+ if (e_flags & EF_BFIN_PIC)
+ strcat (buf, ", PIC");
+
+ if (e_flags & EF_BFIN_FDPIC)
+ strcat (buf, ", FDPIC");
+
+ if (e_flags & EF_BFIN_CODE_IN_L1)
+ strcat (buf, ", code in L1");
+
+ if (e_flags & EF_BFIN_DATA_IN_L1)
+ strcat (buf, ", data in L1");
+
+ break;
+
case EM_CYGNUS_FRV:
switch (e_flags & EF_FRV_CPU_MASK)
{
+2008-07-12 Jie Zhang <jie.zhang@analog.com>
+
+ * bfdlink.h (struct bfd_link_info): Add sep_code member
+ variable.
+ * elf/bfin.h (EF_BFIN_CODE_IN_L1): Define.
+ (EF_BFIN_DATA_IN_L1): Define.
+
2008-07-07 Stan Shebs <stan@codesourcery.com>
* dis-asm.h (struct disassemble_info): Add endian_code field.
/* Non-NULL if .note.gnu.build-id section should be created. */
char *emit_note_gnu_build_id;
+ /* TRUE if putting code into separate segment. */
+ unsigned int sep_code: 1;
+
/* What to do with unresolved symbols in an object file.
When producing executables the default is GENERATE_ERROR.
When producing shared libraries the default is IGNORE. The
#define EF_BFIN_PIC 0x00000001 /* -fpic */
#define EF_BFIN_FDPIC 0x00000002 /* -mfdpic */
+#define EF_BFIN_CODE_IN_L1 0x00000010 /* --code-in-l1 */
+#define EF_BFIN_DATA_IN_L1 0x00000020 /* --data-in-l1 */
+
#define EF_BFIN_PIC_FLAGS (EF_BFIN_PIC | EF_BFIN_FDPIC)
#endif /* _ELF_BFIN_H */
+2008-07-12 Jie Zhang <jie.zhang@analog.com>
+
+ * Makefile.am (eelf32bfin.c): Depend on bfin.em.
+ (eelf32bfinfd.c): Likewise.
+ * Makefile.in: Regenerate.
+ * gen-doc.texi: Set Blackfin.
+ * ld.texinfo: Document --sep-code and Blackfin specific
+ options.
+ * ldmain.c (main): Initialize link_info.sep_code.
+ * lexsup.c (enum option_values): Add OPTION_SEP_CODE.
+ (ld_options[]): Add --sep-code.
+ (parse_args): Deal with --sep-code.
+ * emulparams/bfin.sh (EXTRA_EM_FILE): Define.
+ * emulparams/elf32bfinfd.sh (OTHER_SECTIONS): Define.
+ * emultempl/bfin.em: New file.
+
2008-07-09 Danny Smith <dannysmith@users.sourceforge.net>
*pe-dll.c (autofilter_symbolprefixlist): Excude all symbols
$(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/delta68.sc ${GEN_DEPENDS}
${GENSCRIPTS} delta68 "$(tdir_delta68)"
eelf32bfin.c: $(srcdir)/emulparams/bfin.sh \
- $(ELF_DEPS) \
+ $(ELF_DEPS) $(srcdir)/emultempl/bfin.em \
$(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32bfin "$(tdir_elf32bfin)" bfin
eelf32bfinfd.c: $(srcdir)/emulparams/elf32bfinfd.sh $(srcdir)/emulparams/bfin.sh \
- $(ELF_DEPS) \
+ $(ELF_DEPS) $(srcdir)/emultempl/bfin.em \
$(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32bfinfd "$(tdir_elf32bfinfd)" elf32bfinfd
eelf32_dlx.c: $(srcdir)/emulparams/elf32_dlx.sh \
$(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/delta68.sc ${GEN_DEPENDS}
${GENSCRIPTS} delta68 "$(tdir_delta68)"
eelf32bfin.c: $(srcdir)/emulparams/bfin.sh \
- $(ELF_DEPS) \
+ $(ELF_DEPS) $(srcdir)/emultempl/bfin.em \
$(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32bfin "$(tdir_elf32bfin)" bfin
eelf32bfinfd.c: $(srcdir)/emulparams/elf32bfinfd.sh $(srcdir)/emulparams/bfin.sh \
- $(ELF_DEPS) \
+ $(ELF_DEPS) $(srcdir)/emultempl/bfin.em \
$(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32bfinfd "$(tdir_elf32bfinfd)" elf32bfinfd
eelf32_dlx.c: $(srcdir)/emulparams/elf32_dlx.sh \
GENERATE_SHLIB_SCRIPT=yes
EMBEDDED=yes
USER_LABEL_PREFIX=_
+EXTRA_EM_FILE=bfin
${RELOCATING+__ROFIXUP_END__ = .;}
}
"
+# 0xff700000, 0xff800000, 0xff900000 and 0xffa00000 are also used in
+# Dynamic linker and linux kernel. They need to be keep synchronized.
+OTHER_SECTIONS="
+ .l1.data 0xff700000 :
+ {
+ *(.l1.data)
+ }
+ .l1.data.A 0xff800000 :
+ {
+ *(.l1.data.A)
+ }
+ .l1.data.B 0xff900000 :
+ {
+ *(.l1.data.B)
+ }
+ .l1.text 0xffa00000 :
+ {
+ *(.l1.text)
+ }
+"
+EXTRA_EM_FILE=bfin
--- /dev/null
+# This shell script emits a C file. -*- C -*-
+# Copyright 2006 Free Software Foundation, Inc.
+#
+# This file is part of GLD, the Gnu Linker.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+#
+
+# This file is sourced from elf32.em, and defines extra bfin-elf
+# specific routines.
+#
+cat >>e${EMULATION_NAME}.c <<EOF
+
+#include "elf-bfd.h"
+
+/* Whether to put code in Blackfin L1 SRAM. */
+extern bfd_boolean elf32_bfin_code_in_l1;
+
+/* Whether to put (writable) data in Blackfin L1 SRAM. */
+extern bfd_boolean elf32_bfin_data_in_l1;
+
+EOF
+
+
+# Define some shell vars to insert bits of code into the standard elf
+# parse_args and list_options functions.
+#
+PARSE_AND_LIST_PROLOGUE='
+#define OPTION_CODE_IN_L1 300
+#define OPTION_DATA_IN_L1 301
+'
+
+PARSE_AND_LIST_LONGOPTS='
+ { "code-in-l1", no_argument, NULL, OPTION_CODE_IN_L1 },
+ { "data-in-l1", no_argument, NULL, OPTION_DATA_IN_L1 },
+'
+
+PARSE_AND_LIST_OPTIONS='
+ fprintf (file, _("\
+ --code-in-l1 Put code in l1.\n\
+ --data-in-l1 Put data in l1.\n"
+ ));
+'
+
+PARSE_AND_LIST_ARGS_CASES='
+ case OPTION_CODE_IN_L1:
+ elf32_bfin_code_in_l1 = TRUE;
+ break;
+ case OPTION_DATA_IN_L1:
+ elf32_bfin_data_in_l1 = TRUE;
+ break;
+'
@c 2. Specific target machines
@set ARM
+@set Blackfin
@set H8300
@set HPPA
@set I960
@set UsesEnvVars
@set GENERIC
@set ARM
+@set Blackfin
@set H8300
@set HPPA
@set I960
@ifset ARM
* ARM:: ld and the ARM family
@end ifset
+@ifset Blackfin
+* Blackfin:: ld and the Blackfin family
+@end ifset
@ifset HPPA
* HPPA ELF32:: ld and HPPA 32-bit ELF
@end ifset
followed by a directory name, rather than a file name, it is treated as
the @option{-rpath} option.
+@kindex --sep-code
+@cindex input files, displaying
+@itemx --sep-code
+Put code in a seperate segment, not along with other read only data.
+
@kindex -s
@kindex --strip-all
@cindex strip all symbols
@ifset ARM
* ARM:: @command{ld} and the ARM family
@end ifset
+@ifset Blackfin
+* Blackfin:: @command{ld} and the Blackfin family
+@end ifset
@ifset HPPA
* HPPA ELF32:: @command{ld} and HPPA 32-bit ELF
@end ifset
@end ifclear
@end ifset
+@ifset Blackfin
+@ifclear GENERIC
+@raisesections
+@end ifclear
+
+@node Blackfin
+@section @command{ld} and the Blackfin family
+
+@cindex Put code in L1 instruction SRAM
+@kindex --code-in-l1
+The @samp{--code-in-l1} option adds a specific flag in the ELF header.
+This flag tells loader to put the code segments into Blackfin
+L1 instruction SRAM.
+
+@cindex Put code in L1 data SRAM
+@kindex --data-in-l1
+The @samp{--data-in-l1} option adds a specific flag in the ELF header.
+This flag tells loader to put the data segments into Blackfin L1 data SRAM.
+
+@ifclear GENERIC
+@lowersections
+@end ifclear
+@end ifset
+
@ifset HPPA
@ifclear GENERIC
@raisesections
link_info.pei386_auto_import = -1;
link_info.spare_dynamic_tags = 5;
link_info.path_separator = ':';
+ link_info.sep_code = FALSE;
ldfile_add_arch ("");
emulation = get_emulation (argc, argv);
OPTION_RETAIN_SYMBOLS_FILE,
OPTION_RPATH,
OPTION_RPATH_LINK,
+ OPTION_SEP_CODE,
OPTION_SHARED,
OPTION_SONAME,
OPTION_SORT_COMMON,
'\0', NULL, N_("Create a position independent executable"), ONE_DASH },
{ {"pic-executable", no_argument, NULL, OPTION_PIE},
'\0', NULL, NULL, TWO_DASHES },
+ { {"sep-code", no_argument, NULL, OPTION_SEP_CODE},
+ '\0', NULL, N_("Put code into separate segment"), TWO_DASHES },
{ {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
'\0', N_("[=ascending|descending]"),
N_("Sort common symbols by alignment [in specified order]"),
else
einfo (_("%P%F: -pie not supported\n"));
break;
+ case OPTION_SEP_CODE:
+ link_info.sep_code = TRUE;
+ break;
case 'h': /* Used on Solaris. */
case OPTION_SONAME:
command_line.soname = optarg;
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