@@ -2546,6 +2546,12 @@ struct elf_aarch64_obj_tdata
GNU_PROPERTY_AARCH64_FEATURE_1_BTI. */
int no_bti_warn;
+ /* Mark ouput with GCS based on -z experimental-gcs. */
+ aarch64_gcs_type gcs_type;
+ /* Report linker warning/error for -z experimental-gcs-report based on
+ -z experimental-gcs. */
+ aarch64_gcs_report gcs_report;
+
/* PLT type based on security. */
aarch64_plt_type plt_type;
};
@@ -5024,7 +5030,7 @@ bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
int fix_erratum_835769,
erratum_84319_opts fix_erratum_843419,
int no_apply_dynamic_relocs,
- aarch64_bti_pac_info bp_info)
+ aarch64_gnu_prop_info bp_info)
{
struct elf_aarch64_link_hash_table *globals;
@@ -5052,6 +5058,24 @@ bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
default:
break;
}
+
+ switch (bp_info.gcs_type)
+ {
+ case GCS_ALWAYS:
+ elf_aarch64_tdata (output_bfd)->gnu_and_prop
+ |= GNU_PROPERTY_AARCH64_FEATURE_1_GCS;
+ break;
+ case GCS_NEVER:
+ elf_aarch64_tdata (output_bfd)->gnu_and_prop
+ &= ~GNU_PROPERTY_AARCH64_FEATURE_1_GCS;
+ break;
+
+ default:
+ break;
+ }
+
+ elf_aarch64_tdata (output_bfd)->gcs_type = bp_info.gcs_type;
+ elf_aarch64_tdata (output_bfd)->gcs_report = bp_info.gcs_report;
elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type;
setup_plt_values (link_info, bp_info.plt_type);
}
@@ -10619,7 +10643,12 @@ static bfd *
elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info)
{
uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop;
- bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop);
+ aarch64_gcs_report gcs_report
+ = elf_aarch64_tdata (info->output_bfd)->gcs_report;
+ aarch64_gcs_report gcs_type
+ = elf_aarch64_tdata (info->output_bfd)->gcs_type;
+ bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop,
+ gcs_report, gcs_type);
elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop;
elf_aarch64_tdata (info->output_bfd)->plt_type
|= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0;
@@ -10638,30 +10667,54 @@ elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info,
{
uint32_t prop
= elf_aarch64_tdata (info->output_bfd)->gnu_and_prop;
+ aarch64_gcs_report gcs_report
+ = elf_aarch64_tdata (info->output_bfd)->gcs_report;
+ aarch64_gcs_type gcs_type
+ = elf_aarch64_tdata (info->output_bfd)->gcs_type;
- /* If output has been marked with BTI using command line argument, give out
- warning if necessary. */
/* Properties are merged per type, hence only check for warnings when merging
GNU_PROPERTY_AARCH64_FEATURE_1_AND. */
- if (((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)
+ if ((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)
|| (bprop && bprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND))
- && (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)
- && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn))
{
- if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
- || !aprop)
+ /* If output has been marked with BTI using command line argument, give
+ out warning if necessary. */
+ if ((prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)
+ && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn))
{
- _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
- "all inputs do not have BTI in NOTE section."),
- abfd);
+ if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
+ || !aprop)
+ {
+ _bfd_error_handler (_("%pB: warning: BTI turned on by -z "
+ "force-bti when all inputs do not have BTI "
+ "in NOTE section."), abfd);
+ }
+ if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
+ || !bprop)
+ {
+ _bfd_error_handler (_("%pB: warning: BTI turned on by -z "
+ "force-bti when all inputs do not have BTI "
+ "in NOTE section."), bbfd);
+ }
}
- if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
- || !bprop)
+
+ /* If output has been marked with GCS using -z experimental-gcs and input
+ is missing GCS marking throw warning/error on
+ -z experimental-gcs-report=warning/error. */
+ if ((prop & GNU_PROPERTY_AARCH64_FEATURE_1_GCS) && gcs_report != GCS_NONE)
{
- _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
- "all inputs do not have BTI in NOTE section."),
- bbfd);
+ if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_GCS))
+ || !aprop)
+ _bfd_aarch64_elf_check_gcs_report (gcs_report, abfd);
+ if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_GCS))
+ || !bprop)
+ _bfd_aarch64_elf_check_gcs_report (gcs_report, bbfd);
}
+
+ if (gcs_type == GCS_NEVER && aprop != NULL)
+ aprop->u.number &= ~GNU_PROPERTY_AARCH64_FEATURE_1_GCS;
+ if (gcs_type == GCS_NEVER && bprop != NULL)
+ bprop->u.number &= ~GNU_PROPERTY_AARCH64_FEATURE_1_GCS;
}
return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop,
@@ -702,7 +702,9 @@ _bfd_aarch64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_ty
GPROP accordingly. */
bfd *
_bfd_aarch64_elf_link_setup_gnu_properties (struct bfd_link_info *info,
- uint32_t *gprop)
+ uint32_t *gprop,
+ aarch64_gcs_report gcs_report,
+ aarch64_gcs_type gcs_type)
{
asection *sec;
bfd *pbfd;
@@ -738,6 +740,11 @@ _bfd_aarch64_elf_link_setup_gnu_properties (struct bfd_link_info *info,
_bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti "
"when all inputs do not have BTI in NOTE "
"section."), ebfd);
+
+ if ((gnu_prop & GNU_PROPERTY_AARCH64_FEATURE_1_GCS)
+ && !(prop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_GCS))
+ _bfd_aarch64_elf_check_gcs_report (gcs_report, ebfd);
+
prop->u.number |= gnu_prop;
prop->pr_kind = property_number;
@@ -765,6 +772,14 @@ _bfd_aarch64_elf_link_setup_gnu_properties (struct bfd_link_info *info,
elf_section_type (sec) = SHT_NOTE;
}
}
+ else if (ebfd != NULL && gcs_type == GCS_NEVER)
+ {
+ prop = _bfd_elf_get_property (ebfd, GNU_PROPERTY_AARCH64_FEATURE_1_AND,
+ 4);
+ prop->u.number &= ~GNU_PROPERTY_AARCH64_FEATURE_1_GCS;
+ if (prop->u.number == 0)
+ prop->pr_kind = property_remove;
+ }
pbfd = _bfd_elf_link_setup_gnu_properties (info);
@@ -785,7 +800,8 @@ _bfd_aarch64_elf_link_setup_gnu_properties (struct bfd_link_info *info,
{
gnu_prop = (p->property.u.number
& (GNU_PROPERTY_AARCH64_FEATURE_1_PAC
- | GNU_PROPERTY_AARCH64_FEATURE_1_BTI));
+ | GNU_PROPERTY_AARCH64_FEATURE_1_BTI
+ | GNU_PROPERTY_AARCH64_FEATURE_1_GCS));
break;
}
else if (GNU_PROPERTY_AARCH64_FEATURE_1_AND < p->property.pr_type)
@@ -922,3 +938,20 @@ _bfd_aarch64_elf_link_fixup_gnu_properties
}
}
}
+
+/* Check AArch64 GCS report. */
+void
+_bfd_aarch64_elf_check_gcs_report (aarch64_gcs_report gcs_report, bfd *ebfd)
+{
+ if (gcs_report == GCS_WARN)
+ _bfd_error_handler (_("%pB: warning: GCS turned on by -z experimental-gcs "
+ "on the output when all inputs do not have GCS in NOTE "
+ "section."), ebfd);
+ else if (gcs_report == GCS_ERROR)
+ {
+ _bfd_error_handler (_("%pB: error: GCS turned on by -z experimental-gcs "
+ "on the output when all inputs do not have GCS in "
+ "NOTE section."), ebfd);
+ _exit (EXIT_FAILURE);
+ }
+}
@@ -46,6 +46,27 @@ typedef enum
BTI_WARN = 1, /* BTI is enabled with -z force-bti. */
} aarch64_enable_bti_type;
+/* To indicate whether GNU_PROPERTY_AARCH64_FEATURE_1_GCS bit is
+ enabled/disabled on the output when -z experimental-gcs linker
+ command line option is passed. */
+typedef enum
+{
+ GCS_NEVER = 0, /* gcs is disabled on output. */
+ GCS_IMPLICIT = 1, /* gcs is deduced from input object. */
+ GCS_ALWAYS = 2, /* gsc is enabled on output. */
+} aarch64_gcs_type;
+
+/* To indicate whether to generate linker warning/errors for
+ -z experimental-gcs-report when -z experimental-gcs=always is passed. */
+typedef enum
+{
+ GCS_NONE = 0, /* Does not emit any warning/error messages. */
+ GCS_WARN = 1, /* Emit warning when the input objects are missing gcs
+ markings and output have gcs marking. */
+ GCS_ERROR = 2, /* Emit error when the input objects are missing gcs
+ markings and output have gcs marking. */
+} aarch64_gcs_report;
+
/* A structure to encompass all information coming from BTI or PAC
related command line options. This involves the "PLT_TYPE" to determine
which version of PLTs to pick and "BTI_TYPE" to determine if
@@ -54,7 +75,9 @@ typedef struct
{
aarch64_plt_type plt_type;
aarch64_enable_bti_type bti_type;
-} aarch64_bti_pac_info;
+ aarch64_gcs_type gcs_type;
+ aarch64_gcs_report gcs_report;
+} aarch64_gnu_prop_info;
/* An enum to define what kind of erratum fixes we should apply. This gives the
user a bit more control over the sequences we generate. */
@@ -67,11 +90,11 @@ typedef enum
extern void bfd_elf64_aarch64_set_options
(bfd *, struct bfd_link_info *, int, int, int, int, erratum_84319_opts, int,
- aarch64_bti_pac_info);
+ aarch64_gnu_prop_info);
extern void bfd_elf32_aarch64_set_options
(bfd *, struct bfd_link_info *, int, int, int, int, erratum_84319_opts, int,
- aarch64_bti_pac_info);
+ aarch64_gnu_prop_info);
/* AArch64 stub generation support for ELF64. Called from the linker. */
extern int elf64_aarch64_setup_section_lists
@@ -146,8 +169,9 @@ _bfd_aarch64_elf_write_core_note (bfd *, char *, int *, int, ...);
#define elf_backend_write_core_note _bfd_aarch64_elf_write_core_note
extern bfd *
-_bfd_aarch64_elf_link_setup_gnu_properties (struct bfd_link_info *,
- uint32_t *);
+_bfd_aarch64_elf_link_setup_gnu_properties (struct bfd_link_info *, uint32_t *,
+ aarch64_gcs_report,
+ aarch64_gcs_type);
extern enum elf_property_kind
_bfd_aarch64_elf_parse_gnu_properties (bfd *, unsigned int,
@@ -157,6 +181,8 @@ extern bool
_bfd_aarch64_elf_merge_gnu_properties (struct bfd_link_info *, bfd *,
elf_property *, elf_property *,
uint32_t);
+extern void
+_bfd_aarch64_elf_check_gcs_report (aarch64_gcs_report, bfd *);
extern void
_bfd_aarch64_elf_link_fixup_gnu_properties (struct bfd_link_info *,
@@ -21246,6 +21246,10 @@ decode_aarch64_feature_1_and (unsigned int bitmask)
printf ("PAC");
break;
+ case GNU_PROPERTY_AARCH64_FEATURE_1_GCS:
+ printf ("GCS");
+ break;
+
default:
printf (_("<unknown: %x>"), bit);
break;
@@ -1037,6 +1037,7 @@
#define GNU_PROPERTY_AARCH64_FEATURE_1_BTI (1U << 0)
#define GNU_PROPERTY_AARCH64_FEATURE_1_PAC (1U << 1)
+#define GNU_PROPERTY_AARCH64_FEATURE_1_GCS (1U << 2)
/* Values used in GNU .note.ABI-tag notes (NT_GNU_ABI_TAG). */
#define GNU_ABI_TAG_LINUX 0
@@ -36,6 +36,12 @@ static erratum_84319_opts fix_erratum_843419 = ERRAT_NONE;
static int no_apply_dynamic_relocs = 0;
static aarch64_plt_type plt_type = PLT_NORMAL;
static aarch64_enable_bti_type bti_type = BTI_NONE;
+static aarch64_gcs_type gcs_type = GCS_IMPLICIT;
+static aarch64_gcs_report gcs_report = GCS_NONE;
+static const char * egr = "experimental-gcs-report";
+static const char * eg = "experimental-gcs";
+#define EGR_LEN strlen (egr)
+#define EG_LEN strlen (eg)
static void
gld${EMULATION_NAME}_before_parse (void)
@@ -321,9 +327,11 @@ aarch64_elf_create_output_section_statements (void)
return;
}
- aarch64_bti_pac_info bp_info;
+ aarch64_gnu_prop_info bp_info;
bp_info.plt_type = plt_type;
bp_info.bti_type = bti_type;
+ bp_info.gcs_type = gcs_type;
+ bp_info.gcs_report = gcs_report;
bfd_elf${ELFSIZE}_aarch64_set_options (link_info.output_bfd, &link_info,
no_enum_size_warning,
@@ -398,6 +406,19 @@ PARSE_AND_LIST_OPTIONS='
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"));
+ fprintf (file, _("\
+ -z experimental-gcs[=always|never|implicit] Turn on Guarded Control Stack(gcs) mechanism on the output.\n\
+ implicit(default): deduce gcs from input objects.\n\
+ always: always marks the output with gcs.\n\
+ never: never marks the output with gcs.\n"));
+ fprintf (file, _("\
+ -z experimental-gcs-report[=none|warning|error] Emit warning/error on mismatch of gcs marking between input objects and ouput.\n\
+ none (default): Does not emit any warning/error messages.\n\
+ warning: Emit warning when the input objects are missing gcs markings\n\
+ and output have gcs marking.\n\
+ error: Emit error when the input objects are missing gcs markings\n\
+ and output have gcs marking.\n"));
+
'
PARSE_AND_LIST_ARGS_CASE_Z_AARCH64='
@@ -408,6 +429,28 @@ PARSE_AND_LIST_ARGS_CASE_Z_AARCH64='
}
else if (strcmp (optarg, "pac-plt") == 0)
plt_type |= PLT_PAC;
+ else if (strncmp (optarg, egr, EGR_LEN) == 0)
+ {
+ if (strlen (optarg) == EGR_LEN || strcmp (optarg + EGR_LEN, "=none") == 0)
+ gcs_report = GCS_NONE;
+ else if (strcmp (optarg + EGR_LEN, "=warning") == 0)
+ gcs_report = GCS_WARN;
+ else if (strcmp (optarg + EGR_LEN, "=error") == 0)
+ gcs_report = GCS_ERROR;
+ else
+ einfo (_("%P: error: unrecognized: `%s'\''\n"), optarg);
+ }
+ else if (strncmp (optarg, eg, EG_LEN) == 0)
+ {
+ if (strlen (optarg) == EG_LEN || strcmp (optarg + EG_LEN, "=always") == 0)
+ gcs_type = GCS_ALWAYS;
+ else if (strcmp (optarg + EG_LEN, "=never") == 0)
+ gcs_type = GCS_NEVER;
+ else if (strcmp (optarg + EG_LEN, "=implicit") == 0)
+ gcs_type = GCS_IMPLICIT;
+ else
+ einfo (_("%P: error: unrecognized: `%s'\''\n"), optarg);
+ }
'
PARSE_AND_LIST_ARGS_CASE_Z="$PARSE_AND_LIST_ARGS_CASE_Z $PARSE_AND_LIST_ARGS_CASE_Z_AARCH64"
@@ -487,3 +487,26 @@ if { [supports_dt_relr] } {
if { ![skip_sframe_tests] } {
run_dump_test "sframe-simple-1"
}
+
+run_dump_test "property-gcs1"
+run_dump_test "property-gcs2"
+run_dump_test "property-gcs3"
+run_dump_test "property-gcs4"
+run_dump_test "property-gcs5"
+run_dump_test "property-gcs6"
+run_dump_test "property-gcs7"
+run_dump_test "property-gcs8"
+run_dump_test "property-gcs9"
+run_dump_test "property-gcs10"
+run_dump_test "property-gcs11"
+run_dump_test "property-gcs12"
+run_dump_test "property-gcs13"
+run_dump_test "property-gcs14"
+run_dump_test "property-gcs15"
+run_dump_test "property-gcs16"
+run_dump_test "property-gcs17"
+run_dump_test "property-gcs18"
+run_dump_test "property-gcs19"
+run_dump_test "property-gcs20"
+run_dump_test "property-gcs21"
+run_dump_test "property-gcs22"
@@ -8,4 +8,4 @@
Displaying notes found in: .note.gnu.property
[ ]+Owner[ ]+Data size[ ]+Description
GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
- Properties: AArch64 feature: BTI, PAC
+ Properties: AArch64 feature: BTI, PAC, GCS
@@ -12,6 +12,20 @@ _start:
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
+1:
+ .p2align 3
+2: .long 0xc0000000 /* pr_type. */
+ .long 4f - 3f /* pr_datasz. */
+3:
+ .long 0x4 /* GCS. */
+4:
+ .p2align 3
+5:
+ .p2align 3
+ .long 1f - 0f /* name length */
+ .long 5f - 2f /* data length */
+ .long 5 /* note type */
+0: .asciz "GNU" /* vendor name */
1:
.p2align 3
2: .long 0xc0000000 /* pr_type. */
new file mode 100644
@@ -0,0 +1,25 @@
+ .text
+ .globl _start
+ .type _start,@function
+_start:
+ mov x1, #2
+.ifndef __mult__
+ bl foo
+.endif
+.ifdef __property_gcs__
+ .section ".note.gnu.property", "a"
+ .p2align 3
+ .long 1f - 0f /* name length */
+ .long 5f - 2f /* data length */
+ .long 5 /* note type */
+0: .asciz "GNU" /* vendor name */
+1:
+ .p2align 3
+2: .long 0xc0000000 /* pr_type. */
+ .long 4f - 3f /* pr_datasz. */
+3:
+ .long 0x4 /* GCS. */
+4:
+ .p2align 3
+5:
+.endif
new file mode 100644
@@ -0,0 +1,6 @@
+#name: GNU Property (input without gcs)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -shared
+#readelf: -n
new file mode 100644
@@ -0,0 +1,6 @@
+#name: GNU Property (input without gcs ouput forced with experimental-gcs=always experimental-gcs-report=error)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -z experimental-gcs=always -z experimental-gcs-report=error
+#error: .*property-gcs.*: error: GCS turned on by -z experimental-gcs on the output when all inputs do not have GCS in NOTE section.
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input with gcs output forced with experimental-gcs)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -z experimental-gcs
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input with gcs ouput forced with experimental-gcs=always)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -z experimental-gcs=always
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input with gcs ouput forced with experimental-gcs experimental-gcs-report=none)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -z experimental-gcs -z experimental-gcs-report=none
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input with gcs ouput forced with experimental-gcs experimental-gcs-report=warning)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -z experimental-gcs -z experimental-gcs-report=warning
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input with gcs ouput forced with experimental-gcs experimental-gcs-report=error)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -z experimental-gcs -z experimental-gcs-report=error
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input with gcs ouput forced with experimental-gcs=always experimental-gcs-report=none)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -z experimental-gcs=always -z experimental-gcs-report=none
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input with gcs ouput forced with experimental-gcs=always experimental-gcs-report=warning)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -z experimental-gcs=always -z experimental-gcs-report=warning
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input with gcs ouput forced with experimental-gcs=always experimental-gcs-report=error)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -z experimental-gcs=always -z experimental-gcs-report=error
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,6 @@
+#name: GNU Property (input without gcs output forced with experimental-gcs=never)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -z experimental-gcs=never
+#readelf: -n
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input with gcs)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -shared
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,33 @@
+ .text
+ .global foo
+ .type foo, %function
+foo:
+ sub sp, sp, #16
+ mov w0, 9
+ str w0, [sp, 12]
+ ldr w0, [sp, 12]
+ add w0, w0, 4
+ str w0, [sp, 12]
+ nop
+ add sp, sp, 16
+ ret
+ .size foo, .-foo
+ .global bar
+ .type bar, %function
+.ifdef __property_gcs__
+ .section ".note.gnu.property", "a"
+ .p2align 3
+ .long 1f - 0f /* name length */
+ .long 5f - 2f /* data length */
+ .long 5 /* note type */
+0: .asciz "GNU" /* vendor name */
+1:
+ .p2align 3
+2: .long 0xc0000000 /* pr_type. */
+ .long 4f - 3f /* pr_datasz. */
+3:
+ .long 0x4 /* GCS. */
+4:
+ .p2align 3
+5:
+.endif
new file mode 100644
@@ -0,0 +1,6 @@
+#name: GNU Property (input without gcs output forced with experimental-gcs=implicit)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -z experimental-gcs=implicit
+#readelf: -n
new file mode 100644
@@ -0,0 +1,6 @@
+#name: GNU Property (input with gcs output forced with experimental-gcs=never)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -z experimental-gcs=never
+#readelf: -n
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input with gcs output forced with experimental-gcs=implicit)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0 -defsym __property_gcs__=1
+#ld: -z experimental-gcs=implicit
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input without gcs output forced with experimental-gcs)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -z experimental-gcs
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input without gcs ouput forced with experimental-gcs=always)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -z experimental-gcs=always
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input without gcs ouput forced with experimental-gcs experimental-gcs-report=none)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -z experimental-gcs -z experimental-gcs-report=none
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,12 @@
+#name: GNU Property (input without gcs ouput forced with experimental-gcs experimental-gcs-report=warning)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -z experimental-gcs -z experimental-gcs-report=warning
+#readelf: -n
+#warning: .*property-gcs.*: warning: GCS turned on by -z experimental-gcs on the output when all inputs do not have GCS in NOTE section.
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,6 @@
+#name: GNU Property (input without gcs ouput forced with experimental-gcs experimental-gcs-report=error)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -z experimental-gcs -z experimental-gcs-report=error
+#error: .*property-gcs.*: error: GCS turned on by -z experimental-gcs on the output when all inputs do not have GCS in NOTE section.
new file mode 100644
@@ -0,0 +1,11 @@
+#name: GNU Property (input without gcs ouput forced with experimental-gcs=always experimental-gcs-report=none)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -z experimental-gcs=always -z experimental-gcs-report=none
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS
new file mode 100644
@@ -0,0 +1,12 @@
+#name: GNU Property (input without gcs ouput forced with experimental-gcs=always experimental-gcs-report=warning)
+#source: property-gcs.s
+#alltargets: [check_shared_lib_support] *linux*
+#as: -march=armv9.4-a+gcs -defsym __mult__=0
+#ld: -z experimental-gcs=always -z experimental-gcs-report=warning
+#readelf: -n
+#warning: .*property-gcs.*: warning: GCS turned on by -z experimental-gcs on the output when all inputs do not have GCS in NOTE section.
+
+Displaying notes found in: .note.gnu.property
+[ ]+Owner[ ]+Data size[ ]+Description
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: AArch64 feature: GCS