X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Femultempl%2Faarch64elf.em;h=d0519b3d7b24542aa7500c1bc706415e48bd4f40;hb=a78a19b15254de31c3d38b7e27469aaef0a30e97;hp=45e40b510cf0da21e777f5734dcc9d1be54918a5;hpb=827041555ac443bd57340060f3e034fd7b199dd8;p=deliverable%2Fbinutils-gdb.git
diff --git a/ld/emultempl/aarch64elf.em b/ld/emultempl/aarch64elf.em
index 45e40b510c..d0519b3d7b 100644
--- a/ld/emultempl/aarch64elf.em
+++ b/ld/emultempl/aarch64elf.em
@@ -1,5 +1,5 @@
# This shell script emits a C file. -*- C -*-
-# Copyright (C) 2009-2019 Free Software Foundation, Inc.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
# Contributed by ARM Ltd.
#
# This file is part of the GNU Binutils.
@@ -19,20 +19,23 @@
# see .
#
-# This file is sourced from elf32.em, and defines extra aarch64-elf
+# This file is sourced from elf.em, and defines extra aarch64-elf
# specific routines.
#
fragment <the_bfd, stub_sec, 3);
+ bfd_set_section_alignment (stub_sec, 3);
output_section = input_section->output_section;
os = lang_output_section_get (output_section);
@@ -204,7 +207,7 @@ gldaarch64_layout_sections_again (void)
/* If we have changed sizes of the stub sections, then we need
to recalculate all the section offsets. This may mean we need to
add even more stubs. */
- gld${EMULATION_NAME}_map_segments (TRUE);
+ ldelf_map_segments (TRUE);
need_laying_out = -1;
}
@@ -215,7 +218,7 @@ build_section_lists (lang_statement_union_type *statement)
{
asection *i = statement->input_section.section;
- if (!((lang_input_statement_type *) i->owner->usrdata)->flags.just_syms
+ if (!bfd_input_just_syms (i->owner)
&& (i->flags & SEC_EXCLUDE) == 0
&& i->output_section != NULL
&& i->output_section->owner == link_info.output_bfd)
@@ -273,7 +276,7 @@ gld${EMULATION_NAME}_after_allocation (void)
}
if (need_laying_out != -1)
- gld${EMULATION_NAME}_map_segments (need_laying_out);
+ ldelf_map_segments (need_laying_out);
}
static void
@@ -308,12 +311,17 @@ aarch64_elf_create_output_section_statements (void)
return;
}
+ aarch64_bti_pac_info bp_info;
+ bp_info.plt_type = plt_type;
+ bp_info.bti_type = bti_type;
+
bfd_elf${ELFSIZE}_aarch64_set_options (link_info.output_bfd, &link_info,
no_enum_size_warning,
no_wchar_size_warning,
pic_veneer,
fix_erratum_835769, fix_erratum_843419,
- no_apply_dynamic_relocs);
+ no_apply_dynamic_relocs,
+ bp_info);
stub_file = lang_add_input_file ("linker stubs",
lang_input_file_is_fake_enum,
@@ -332,26 +340,6 @@ aarch64_elf_create_output_section_statements (void)
ldlang_add_file (stub_file);
}
-/* Avoid processing the fake stub_file in vercheck, stat_needed and
- check_needed routines. */
-
-static void (*real_func) (lang_input_statement_type *);
-
-static void aarch64_for_each_input_file_wrapper (lang_input_statement_type *l)
-{
- if (l != stub_file)
- (*real_func) (l);
-}
-
-static void
-aarch64_lang_for_each_input_file (void (*func) (lang_input_statement_type *))
-{
- real_func = func;
- lang_for_each_input_file (&aarch64_for_each_input_file_wrapper);
-}
-
-#define lang_for_each_input_file aarch64_lang_for_each_input_file
-
EOF
# Define some shell vars to insert bits of code into the standard elf
@@ -376,7 +364,7 @@ PARSE_AND_LIST_LONGOPTS='
{ "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE },
{ "no-wchar-size-warning", no_argument, NULL, OPTION_NO_WCHAR_SIZE_WARNING},
{ "fix-cortex-a53-835769", no_argument, NULL, OPTION_FIX_ERRATUM_835769},
- { "fix-cortex-a53-843419", no_argument, NULL, OPTION_FIX_ERRATUM_843419},
+ { "fix-cortex-a53-843419", optional_argument, NULL, OPTION_FIX_ERRATUM_843419},
{ "no-apply-dynamic-relocs", no_argument, NULL, OPTION_NO_APPLY_DYNAMIC_RELOCS},
'
@@ -396,10 +384,33 @@ PARSE_AND_LIST_OPTIONS='
Values of +/-1 indicate the linker should\n\
choose suitable defaults.\n"));
fprintf (file, _(" --fix-cortex-a53-835769 Fix erratum 835769\n"));
- fprintf (file, _(" --fix-cortex-a53-843419 Fix erratum 843419\n"));
+ fprintf (file, _("\
+ --fix-cortex-a53-843419[=full|adr|adrp] Fix erratum 843419 and optionally specify which workaround to use.\n\
+ full (default): Use both ADRP and ADR workaround, this will \n\
+ increase the size of your binaries.\n\
+ adr: Only use the ADR workaround, this will not cause any increase\n\
+ in binary size but linking will fail if the referenced address is\n\
+ out of range of an ADR instruction. This will remove the need of using\n\
+ a veneer and results in both performance and size benefits.\n\
+ adrp: Use only the ADRP workaround, this will never rewrite your ADRP\n\
+ instruction into an ADR. As such the workaround will always use a\n\
+ veneer and this will give you both a performance and size overhead.\n"));
fprintf (file, _(" --no-apply-dynamic-relocs Do not apply link-time values for dynamic relocations\n"));
+ fprintf (file, _(" -z force-bti Turn on Branch Target Identification mechanism and generate PLTs with BTI. Generate warnings for missing BTI on inputs\n"));
+ fprintf (file, _(" -z pac-plt Protect PLTs with Pointer Authentication.\n"));
'
+PARSE_AND_LIST_ARGS_CASE_Z_AARCH64='
+ else if (strcmp (optarg, "force-bti") == 0)
+ {
+ plt_type |= PLT_BTI;
+ bti_type = BTI_WARN;
+ }
+ else if (strcmp (optarg, "pac-plt") == 0)
+ plt_type |= PLT_PAC;
+'
+PARSE_AND_LIST_ARGS_CASE_Z="$PARSE_AND_LIST_ARGS_CASE_Z $PARSE_AND_LIST_ARGS_CASE_Z_AARCH64"
+
PARSE_AND_LIST_ARGS_CASES='
case '\'p\'':
/* Only here for backwards compatibility. */
@@ -422,7 +433,19 @@ PARSE_AND_LIST_ARGS_CASES='
break;
case OPTION_FIX_ERRATUM_843419:
- fix_erratum_843419 = 1;
+ fix_erratum_843419 = ERRAT_ADR | ERRAT_ADRP;
+ if (optarg && *optarg)
+ {
+ if (strcmp ("full", optarg) == 0)
+ fix_erratum_843419 = ERRAT_ADR | ERRAT_ADRP;
+ else if (strcmp ("adrp", optarg) == 0)
+ fix_erratum_843419 = ERRAT_ADRP;
+ else if (strcmp ("adr", optarg) == 0)
+ fix_erratum_843419 = ERRAT_ADR;
+ else
+ einfo (_("%P: error: unrecognized option for "
+ "--fix-cortex-a53-843419: %s\n"), optarg);
+ }
break;
case OPTION_NO_APPLY_DYNAMIC_RELOCS: