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-rw-r--r--bfd/ChangeLog12
-rw-r--r--bfd/elf.c17
-rw-r--r--bfd/elf32-bfin.c27
-rw-r--r--binutils/ChangeLog5
-rw-r--r--binutils/readelf.c15
-rw-r--r--include/ChangeLog7
-rw-r--r--include/bfdlink.h3
-rw-r--r--include/elf/bfin.h3
-rw-r--r--ld/ChangeLog16
-rw-r--r--ld/Makefile.am4
-rw-r--r--ld/Makefile.in4
-rwxr-xr-xld/emulparams/bfin.sh1
-rw-r--r--ld/emulparams/elf32bfinfd.sh21
-rw-r--r--ld/emultempl/bfin.em64
-rw-r--r--ld/gen-doc.texi1
-rw-r--r--ld/ld.texinfo36
-rw-r--r--ld/ldmain.c1
-rw-r--r--ld/lexsup.c6
18 files changed, 239 insertions, 4 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index f838cbf..c37f13e 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,15 @@
+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
diff --git a/bfd/elf.c b/bfd/elf.c
index d65c78d..f066c7c 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -3605,6 +3605,7 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
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;
@@ -3676,6 +3677,7 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
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)
@@ -3757,6 +3759,14 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
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. */
@@ -3771,6 +3781,8 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
{
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))
@@ -3796,6 +3808,11 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
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)
diff --git a/bfd/elf32-bfin.c b/bfd/elf32-bfin.c
index f83abd2..480feb2 100644
--- a/bfd/elf32-bfin.c
+++ b/bfd/elf32-bfin.c
@@ -1119,6 +1119,22 @@ bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
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
@@ -5572,6 +5588,14 @@ error_return:
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 }
+};
+
#define TARGET_LITTLE_SYM bfd_elf32_bfin_vec
#define TARGET_LITTLE_NAME "elf32-bfin"
@@ -5618,8 +5642,11 @@ error_return:
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
diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 8491b07..e0f1d8c 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,8 @@
+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
diff --git a/binutils/readelf.c b/binutils/readelf.c
index 8a38db7..789287f 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -2140,6 +2140,21 @@ get_machine_flags (unsigned e_flags, unsigned e_machine)
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)
{
diff --git a/include/ChangeLog b/include/ChangeLog
index 6a433ea..1cc6fc5 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,10 @@
+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.
diff --git a/include/bfdlink.h b/include/bfdlink.h
index e683310..d22519a 100644
--- a/include/bfdlink.h
+++ b/include/bfdlink.h
@@ -346,6 +346,9 @@ struct bfd_link_info
/* 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
diff --git a/include/elf/bfin.h b/include/elf/bfin.h
index 3c07cd1..523db9b 100644
--- a/include/elf/bfin.h
+++ b/include/elf/bfin.h
@@ -88,5 +88,8 @@ END_RELOC_NUMBERS (R_max)
#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 */
diff --git a/ld/ChangeLog b/ld/ChangeLog
index 8e6d62a..91bae67 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,19 @@
+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
diff --git a/ld/Makefile.am b/ld/Makefile.am
index 80c53d8..fe8edf0 100644
--- a/ld/Makefile.am
+++ b/ld/Makefile.am
@@ -653,11 +653,11 @@ edelta68.c: $(srcdir)/emulparams/delta68.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 \
diff --git a/ld/Makefile.in b/ld/Makefile.in
index 94e5d68..06b4846 100644
--- a/ld/Makefile.in
+++ b/ld/Makefile.in
@@ -1482,11 +1482,11 @@ edelta68.c: $(srcdir)/emulparams/delta68.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 \
diff --git a/ld/emulparams/bfin.sh b/ld/emulparams/bfin.sh
index 1c764e8..f33baf5 100755
--- a/ld/emulparams/bfin.sh
+++ b/ld/emulparams/bfin.sh
@@ -10,3 +10,4 @@ TEMPLATE_NAME=elf32
GENERATE_SHLIB_SCRIPT=yes
EMBEDDED=yes
USER_LABEL_PREFIX=_
+EXTRA_EM_FILE=bfin
diff --git a/ld/emulparams/elf32bfinfd.sh b/ld/emulparams/elf32bfinfd.sh
index 19ec748..588a53f 100644
--- a/ld/emulparams/elf32bfinfd.sh
+++ b/ld/emulparams/elf32bfinfd.sh
@@ -14,3 +14,24 @@ OTHER_READONLY_SECTIONS="
${RELOCATING+__ROFIXUP_END__ = .;}
}
"
+# 0xff700000, 0xff800000, 0xff900000 and 0xffa00000 are also used in
+# Dynamic linker and linux kernel. They need to be keep synchronized.
+OTHER_SECTIONS="
+ .l1.data 0xff700000 :
+ {
+ *(.l1.data)
+ }
+ .l1.data.A 0xff800000 :
+ {
+ *(.l1.data.A)
+ }
+ .l1.data.B 0xff900000 :
+ {
+ *(.l1.data.B)
+ }
+ .l1.text 0xffa00000 :
+ {
+ *(.l1.text)
+ }
+"
+EXTRA_EM_FILE=bfin
diff --git a/ld/emultempl/bfin.em b/ld/emultempl/bfin.em
new file mode 100644
index 0000000..326537d
--- /dev/null
+++ b/ld/emultempl/bfin.em
@@ -0,0 +1,64 @@
+# This shell script emits a C file. -*- C -*-
+# Copyright 2006 Free Software Foundation, Inc.
+#
+# This file is part of GLD, the Gnu Linker.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+#
+
+# This file is sourced from elf32.em, and defines extra bfin-elf
+# specific routines.
+#
+cat >>e${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;
+'
diff --git a/ld/gen-doc.texi b/ld/gen-doc.texi
index 7434edb..f7e75cf 100644
--- a/ld/gen-doc.texi
+++ b/ld/gen-doc.texi
@@ -4,6 +4,7 @@
@c 2. Specific target machines
@set ARM
+@set Blackfin
@set H8300
@set HPPA
@set I960
diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index 4400524..a37d7d5 100644
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -21,6 +21,7 @@
@set UsesEnvVars
@set GENERIC
@set ARM
+@set Blackfin
@set H8300
@set HPPA
@set I960
@@ -140,6 +141,9 @@ section entitled ``GNU Free Documentation License''.
@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
@@ -825,6 +829,11 @@ For compatibility with other ELF linkers, if the @option{-R} option is
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
@@ -5362,6 +5371,9 @@ functionality are not listed.
@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
@@ -5752,6 +5764,30 @@ otherwise.
@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
diff --git a/ld/ldmain.c b/ld/ldmain.c
index e7b9c0f..d094afa 100644
--- a/ld/ldmain.c
+++ b/ld/ldmain.c
@@ -277,6 +277,7 @@ main (int argc, char **argv)
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);
diff --git a/ld/lexsup.c b/ld/lexsup.c
index 60a8167..3f63060 100644
--- a/ld/lexsup.c
+++ b/ld/lexsup.c
@@ -92,6 +92,7 @@ enum option_values
OPTION_RETAIN_SYMBOLS_FILE,
OPTION_RPATH,
OPTION_RPATH_LINK,
+ OPTION_SEP_CODE,
OPTION_SHARED,
OPTION_SONAME,
OPTION_SORT_COMMON,
@@ -477,6 +478,8 @@ static const struct ld_option ld_options[] =
'\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]"),
@@ -1143,6 +1146,9 @@ parse_args (unsigned argc, char **argv)
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;
generated by cgit v1.1 at 2024-11-11 12:53:31 +0000