From 37c18eedffe3926a330149ca93e7407917e2be38 Mon Sep 17 00:00:00 2001 From: Sudakshina Das Date: Wed, 13 Mar 2019 10:54:30 +0000 Subject: [BFD, LD, AArch64, 2/3] Add --force-bti to enable BTI and to select BTI enabled PLTs This is part of the patch series to add support for BTI and PAC in AArch64 linker. 1) This patch adds a new ld command line option: --force-bti. In the presence of this option, the linker enables BTI with the GNU_PROPERTY_AARCH64_FEATURE_1_BTI feature. This gives out warning in case of missing gnu notes for BTI in inputs. 2) It also defines a new set of BTI enabled PLTs. These are used either when all the inputs are marked with GNU_PROPERTY_AARCH64_FEATURE_1_BTI or when the new --force-bti option is used. This required adding new fields in elf_aarch64_link_hash_table so that we could make the PLT related information more generic. 3) It also defines a dynamic tag DT_AARCH64_BTI_PLT. The linker uses this whenever it picks BTI enabled PLTs. All these are made according to the new AArch64 ELF ABI https://developer.arm.com/docs/ihi0056/latest/elf-for-the-arm-64-bit-architecture-aarch64-abi-2018q4 *** bfd/ChangeLog *** 2019-03-13 Sudakshina Das Szabolcs Nagy * bfd-in.h (aarch64_plt_type, aarch64_enable_bti_type): New. (aarch64_bti_pac_info): New. (bfd_elf64_aarch64_set_options): Add aarch64_bti_pac_info argument. (bfd_elf32_aarch64_set_options): Likewise. * bfd-in2.h: Regenerate * elfnn-aarch64.c (PLT_BTI_ENTRY_SIZE): New. (PLT_BTI_SMALL_ENTRY_SIZE, PLT_BTI_TLSDESC_ENTRY_SIZE): New. (elfNN_aarch64_small_plt0_bti_entry): New. (elfNN_aarch64_small_plt_bti_entry): New. (elfNN_aarch64_tlsdesc_small_plt_bti_entry): New. (elf_aarch64_obj_tdata): Add no_bti_warn and plt_type fields. (elf_aarch64_link_hash_table): Add plt0_entry, plt_entry and tlsdesc_plt_entry_size fields. (elfNN_aarch64_link_hash_table_create): Initialise the new fields. (setup_plt_values): New helper function. (bfd_elfNN_aarch64_set_options): Use new bp_info to set plt sizes and bti enable type. (elfNN_aarch64_allocate_dynrelocs): Use new size members instead of fixed macros. (elfNN_aarch64_size_dynamic_sections): Likewise and add checks. (elfNN_aarch64_create_small_pltn_entry): Use new generic pointers to plt stubs instead of fixed ones and update filling them according to the need for bti. (elfNN_aarch64_init_small_plt0_entry): Likewise. (elfNN_aarch64_finish_dynamic_sections): Likewise. (get_plt_type, elfNN_aarch64_get_synthetic_symtab): New. (elfNN_aarch64_plt_sym_val): Update size accordingly. (elfNN_aarch64_link_setup_gnu_properties): Set up plts if BTI GNU NOTE is set. (bfd_elfNN_get_synthetic_symtab): Define. (elfNN_aarch64_merge_gnu_properties): Give out warning with --force-bti and mising BTI NOTE SECTION. *** binutils/ChangeLog *** 2019-03-13 Sudakshina Das Szabolcs Nagy * readelf.c (get_aarch64_dynamic_type): New. (get_dynamic_type): Use above for EM_AARCH64. (dynamic_section_aarch64_val): New. (process_dynamic_section): Use above for EM_AARCH64. *** include/ChangeLog *** 2019-03-13 Sudakshina Das Szabolcs Nagy * elf/aarch64.h (DT_AARCH64_BTI_PLT): New. *** ld/ChangeLog *** 2019-03-13 Sudakshina Das Szabolcs Nagy * NEWS: Document --force-bti. * emultempl/aarch64elf.em (plt_type, bti_type, OPTION_FORCE_BTI): New. (PARSE_AND_LIST_SHORTOPTS, PARSE_AND_LIST_OPTIONS): Add force-bti. (PARSE_AND_LIST_ARGS_CASES): Handle OPTION_FORCE_BTI. * testsuite/ld-aarch64/aarch64-elf.exp: Add all the tests below. * testsuite/ld-aarch64/bti-plt-1.d: New test. * testsuite/ld-aarch64/bti-plt-1.s: New test. * testsuite/ld-aarch64/bti-plt-2.s: New test. * testsuite/ld-aarch64/bti-plt-2.d: New test. * testsuite/ld-aarch64/bti-plt-3.d: New test. * testsuite/ld-aarch64/bti-plt-4.d: New test. * testsuite/ld-aarch64/bti-plt-5.d: New test. * testsuite/ld-aarch64/bti-plt-6.d: New test. * testsuite/ld-aarch64/bti-plt-7.d: New test. * testsuite/ld-aarch64/bti-plt-so.s: New test. * testsuite/ld-aarch64/bti-plt.ld: New test. --- ld/ChangeLog | 19 +++++++++++++++ ld/NEWS | 4 ++++ ld/emultempl/aarch64elf.em | 17 +++++++++++++- ld/testsuite/ld-aarch64/aarch64-elf.exp | 10 ++++++++ ld/testsuite/ld-aarch64/bti-plt-1.d | 32 +++++++++++++++++++++++++ ld/testsuite/ld-aarch64/bti-plt-1.s | 21 +++++++++++++++++ ld/testsuite/ld-aarch64/bti-plt-2.d | 11 +++++++++ ld/testsuite/ld-aarch64/bti-plt-2.s | 21 +++++++++++++++++ ld/testsuite/ld-aarch64/bti-plt-3.d | 34 +++++++++++++++++++++++++++ ld/testsuite/ld-aarch64/bti-plt-4.d | 10 ++++++++ ld/testsuite/ld-aarch64/bti-plt-5.d | 28 ++++++++++++++++++++++ ld/testsuite/ld-aarch64/bti-plt-6.d | 15 ++++++++++++ ld/testsuite/ld-aarch64/bti-plt-7.d | 15 ++++++++++++ ld/testsuite/ld-aarch64/bti-plt-so.s | 41 +++++++++++++++++++++++++++++++++ ld/testsuite/ld-aarch64/bti-plt.ld | 14 +++++++++++ 15 files changed, 291 insertions(+), 1 deletion(-) create mode 100644 ld/testsuite/ld-aarch64/bti-plt-1.d create mode 100644 ld/testsuite/ld-aarch64/bti-plt-1.s create mode 100644 ld/testsuite/ld-aarch64/bti-plt-2.d create mode 100644 ld/testsuite/ld-aarch64/bti-plt-2.s create mode 100644 ld/testsuite/ld-aarch64/bti-plt-3.d create mode 100644 ld/testsuite/ld-aarch64/bti-plt-4.d create mode 100644 ld/testsuite/ld-aarch64/bti-plt-5.d create mode 100644 ld/testsuite/ld-aarch64/bti-plt-6.d create mode 100644 ld/testsuite/ld-aarch64/bti-plt-7.d create mode 100644 ld/testsuite/ld-aarch64/bti-plt-so.s create mode 100644 ld/testsuite/ld-aarch64/bti-plt.ld (limited to 'ld') diff --git a/ld/ChangeLog b/ld/ChangeLog index 32b5387..151877d 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,4 +1,23 @@ 2019-03-13 Sudakshina Das + Szabolcs Nagy + + * NEWS: Document --force-bti. + * emultempl/aarch64elf.em (plt_type, bti_type, OPTION_FORCE_BTI): New. + (PARSE_AND_LIST_SHORTOPTS, PARSE_AND_LIST_OPTIONS): Add force-bti. + (PARSE_AND_LIST_ARGS_CASES): Handle OPTION_FORCE_BTI. + * testsuite/ld-aarch64/aarch64-elf.exp: Add all the tests below. + * testsuite/ld-aarch64/bti-plt-1.d: New test. + * testsuite/ld-aarch64/bti-plt-1.s: New test. + * testsuite/ld-aarch64/bti-plt-2.d: New test. + * testsuite/ld-aarch64/bti-plt-3.d: New test. + * testsuite/ld-aarch64/bti-plt-4.d: New test. + * testsuite/ld-aarch64/bti-plt-5.d: New test. + * testsuite/ld-aarch64/bti-plt-6.d: New test. + * testsuite/ld-aarch64/bti-plt-7.d: New test. + * testsuite/ld-aarch64/bti-plt-so.s: New test. + * testsuite/ld-aarch64/bti-plt.ld: New test. + +2019-03-13 Sudakshina Das * NEWS: Document GNU_PROPERTY_AARCH64_FEATURE_1_BTI and GNU_PROPERTY_AARCH64_FEATURE_1_PAC. diff --git a/ld/NEWS b/ld/NEWS index dcf1185..ed8dfc5 100644 --- a/ld/NEWS +++ b/ld/NEWS @@ -10,6 +10,10 @@ Changes in 2.33: * Add support for GNU_PROPERTY_AARCH64_FEATURE_1_PAC in ELF GNU program properties in the AArch64 ELF linker. +* Add --force-bti for AArch64 to enable GNU_PROPERTY_AARCH64_FEATURE_1_BTI + on output while warning about missing GNU_PROPERTY_AARCH64_FEATURE_1_BTI + on inputs and use PLTs protected with BTI. + Changes in 2.32: * Report property change in linker map file when merging GNU properties. diff --git a/ld/emultempl/aarch64elf.em b/ld/emultempl/aarch64elf.em index 45e40b5..02243d9 100644 --- a/ld/emultempl/aarch64elf.em +++ b/ld/emultempl/aarch64elf.em @@ -33,6 +33,8 @@ static int pic_veneer = 0; static int fix_erratum_835769 = 0; static int fix_erratum_843419 = 0; 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 void gld${EMULATION_NAME}_before_parse (void) @@ -308,12 +310,17 @@ aarch64_elf_create_output_section_statements (void) return; } + aarch64_bti_pac_info bp_info; + bp_info.plt_type = plt_type; + bp_info.bti_type = bti_type; + bfd_elf${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, @@ -365,6 +372,7 @@ PARSE_AND_LIST_PROLOGUE=' #define OPTION_FIX_ERRATUM_835769 313 #define OPTION_FIX_ERRATUM_843419 314 #define OPTION_NO_APPLY_DYNAMIC_RELOCS 315 +#define OPTION_FORCE_BTI 316 ' PARSE_AND_LIST_SHORTOPTS=p @@ -378,6 +386,7 @@ PARSE_AND_LIST_LONGOPTS=' { "fix-cortex-a53-835769", no_argument, NULL, OPTION_FIX_ERRATUM_835769}, { "fix-cortex-a53-843419", no_argument, NULL, OPTION_FIX_ERRATUM_843419}, { "no-apply-dynamic-relocs", no_argument, NULL, OPTION_NO_APPLY_DYNAMIC_RELOCS}, + { "force-bti", no_argument, NULL, OPTION_FORCE_BTI}, ' PARSE_AND_LIST_OPTIONS=' @@ -398,6 +407,7 @@ PARSE_AND_LIST_OPTIONS=' fprintf (file, _(" --fix-cortex-a53-835769 Fix erratum 835769\n")); fprintf (file, _(" --fix-cortex-a53-843419 Fix erratum 843419\n")); fprintf (file, _(" --no-apply-dynamic-relocs Do not apply link-time values for dynamic relocations\n")); + fprintf (file, _(" --force-bti Turn on Branch Target Identification mechanism and generate PLTs with BTI. Generate warnings for missing BTI on inputs\n")); ' PARSE_AND_LIST_ARGS_CASES=' @@ -429,6 +439,11 @@ PARSE_AND_LIST_ARGS_CASES=' no_apply_dynamic_relocs = 1; break; + case OPTION_FORCE_BTI: + plt_type |= PLT_BTI; + bti_type = BTI_WARN; + break; + case OPTION_STUBGROUP_SIZE: { const char *end; diff --git a/ld/testsuite/ld-aarch64/aarch64-elf.exp b/ld/testsuite/ld-aarch64/aarch64-elf.exp index c6fefbb..906534b 100644 --- a/ld/testsuite/ld-aarch64/aarch64-elf.exp +++ b/ld/testsuite/ld-aarch64/aarch64-elf.exp @@ -374,6 +374,8 @@ run_dump_test_lp64 "pie-bind-locally" run_dump_test "property-bti-pac1" run_dump_test "property-bti-pac2" run_dump_test "property-bti-pac3" +run_dump_test "bti-plt-1" +run_dump_test "bti-plt-2" set aarch64elflinktests { {"ld-aarch64/so with global symbol" "-shared" "" "" {copy-reloc-so.s} @@ -389,6 +391,14 @@ set aarch64elflinktests { {"ld-aarch64/func sym hash opt for exe" "-e0 --hash-style=gnu tmpdir/func-in-so.so" "" "" {func-sym-hash-opt.s} {{readelf --dyn-sym func-sym-hash-opt.d}} "hash-opt"} + {"Build bti-plt-so for PLT tests" "-shared" "" "" {bti-plt-so.s} + {} "libbti-plt-so.so"} } run_ld_link_tests $aarch64elflinktests + +run_dump_test "bti-plt-3" +run_dump_test "bti-plt-4" +run_dump_test "bti-plt-5" +run_dump_test "bti-plt-6" +run_dump_test "bti-plt-7" diff --git a/ld/testsuite/ld-aarch64/bti-plt-1.d b/ld/testsuite/ld-aarch64/bti-plt-1.d new file mode 100644 index 0000000..b7b58a8 --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt-1.d @@ -0,0 +1,32 @@ +#name: Check --force-bti emits BTI PLT (shared) +#source: bti-plt-1.s +#as: -mabi=lp64 +#ld: -shared --force-bti -T bti-plt.ld +#objdump: -dr -j .plt + +[^:]*: *file format elf64-.*aarch64 + +Disassembly of section \.plt: + +[0-9]+ <.*>: +.*: d503245f bti c +.*: a9bf7bf0 stp x16, x30, \[sp, #-16\]! +.*: 90000090 adrp x16, 28000 <_GLOBAL_OFFSET_TABLE_> +.*: f9400e11 ldr x17, \[x16, #24\] +.*: 91006210 add x16, x16, #0x18 +.*: d61f0220 br x17 +.*: d503201f nop +.*: d503201f nop +.*: d503201f nop + +[0-9]+ <.*>: +.*: 90000090 adrp x16, 28000 <_GLOBAL_OFFSET_TABLE_> +.*: f9401211 ldr x17, \[x16, #32\] +.*: 91008210 add x16, x16, #0x20 +.*: d61f0220 br x17 + +[0-9]+ <.*>: +.*: 90000090 adrp x16, 28000 <_GLOBAL_OFFSET_TABLE_> +.*: f9401611 ldr x17, \[x16, #40\] +.*: 9100a210 add x16, x16, #0x28 +.*: d61f0220 br x17 diff --git a/ld/testsuite/ld-aarch64/bti-plt-1.s b/ld/testsuite/ld-aarch64/bti-plt-1.s new file mode 100644 index 0000000..78e1aaa --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt-1.s @@ -0,0 +1,21 @@ + .text + .globl _start + .type _start,@function +_start: + bl foo + bl bar + .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 0x1 /* BTI. */ +4: + .p2align 3 +5: diff --git a/ld/testsuite/ld-aarch64/bti-plt-2.d b/ld/testsuite/ld-aarch64/bti-plt-2.d new file mode 100644 index 0000000..c26e47a --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt-2.d @@ -0,0 +1,11 @@ +#name: Check --force-bti emits BTI feature (shared) +#source: bti-plt-1.s +#source: bti-plt-2.s +#as: -mabi=lp64 +#ld: -shared --force-bti -T bti-plt.ld +#readelf: -n + +Displaying notes found in: .note.gnu.property + Owner Data size Description + GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0 + Properties: AArch64 feature: BTI diff --git a/ld/testsuite/ld-aarch64/bti-plt-2.s b/ld/testsuite/ld-aarch64/bti-plt-2.s new file mode 100644 index 0000000..fff945c --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt-2.s @@ -0,0 +1,21 @@ + .text + .globl _start + .type _start,@function +func2: + bl foo2 + bl bar2 + .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 0x1 /* BTI. */ +4: + .p2align 3 +5: diff --git a/ld/testsuite/ld-aarch64/bti-plt-3.d b/ld/testsuite/ld-aarch64/bti-plt-3.d new file mode 100644 index 0000000..0d4c467 --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt-3.d @@ -0,0 +1,34 @@ +#name: Check --force-bti emits BTI PLT (exec) +#source: bti-plt-1.s +#as: -mabi=lp64 +#ld: --force-bti -e _start -T bti-plt.ld -L./tmpdir -lbti-plt-so +#objdump: -dr -j .plt + +[^:]*: *file format elf64-.*aarch64 + +Disassembly of section \.plt: + +[0-9]+ <.*>: +.*: d503245f bti c +.*: a9bf7bf0 stp x16, x30, \[sp, #-16\]! +.*: 90000090 adrp x16, 28000 <_GLOBAL_OFFSET_TABLE_> +.*: f9400e11 ldr x17, \[x16, #24\] +.*: 91006210 add x16, x16, #0x18 +.*: d61f0220 br x17 +.*: d503201f nop +.*: d503201f nop +.*: d503201f nop + +[0-9]+ <.*>: +.*: d503245f bti c +.*: 90000090 adrp x16, 28000 <_GLOBAL_OFFSET_TABLE_> +.*: f9401211 ldr x17, \[x16, #32\] +.*: 91008210 add x16, x16, #0x20 +.*: d61f0220 br x17 + +[0-9]+ <.*>: +.*: d503245f bti c +.*: 90000090 adrp x16, 28000 <_GLOBAL_OFFSET_TABLE_> +.*: f9401611 ldr x17, \[x16, #40\] +.*: 9100a210 add x16, x16, #0x28 +.*: d61f0220 br x17 diff --git a/ld/testsuite/ld-aarch64/bti-plt-4.d b/ld/testsuite/ld-aarch64/bti-plt-4.d new file mode 100644 index 0000000..90aeed2 --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt-4.d @@ -0,0 +1,10 @@ +#name: Check --force-bti emits BTI feature (exec) +#source: bti-plt-1.s +#as: -mabi=lp64 +#ld: --force-bti -e _start -T bti-plt.ld -L./tmpdir -lbti-plt-so +#readelf: -n + +Displaying notes found in: .note.gnu.property + Owner Data size Description + GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0 + Properties: AArch64 feature: BTI diff --git a/ld/testsuite/ld-aarch64/bti-plt-5.d b/ld/testsuite/ld-aarch64/bti-plt-5.d new file mode 100644 index 0000000..01231b6 --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt-5.d @@ -0,0 +1,28 @@ +#name: BTI PLT with only GNU PROP +#source: property-bti-pac1.s +#as: -mabi=lp64 -defsym __property_bti__=1 +#ld: -e _start -L./tmpdir -lbti-plt-so +#objdump: -dr -j .plt +#target: *linux* + +[^:]*: *file format elf64-.*aarch64 + +Disassembly of section \.plt: + +[0-9a-f]+ <.*>: +.*: d503245f bti c +.*: a9bf7bf0 stp x16, x30, \[sp, #-16\]! +.*: 90000090 adrp x16, 410000 <_start\+0xfd28> +.*: f9421611 ldr x17, \[x16, #1064\] +.*: 9110a210 add x16, x16, #0x428 +.*: d61f0220 br x17 +.*: d503201f nop +.*: d503201f nop +.*: d503201f nop + +[0-9a-f]+ <.*>: +.*: d503245f bti c +.*: 90000090 adrp x16, 410000 <_start\+0xfd28> +.*: f9421a11 ldr x17, \[x16, #1072\] +.*: 9110c210 add x16, x16, #0x430 +.*: d61f0220 br x17 diff --git a/ld/testsuite/ld-aarch64/bti-plt-6.d b/ld/testsuite/ld-aarch64/bti-plt-6.d new file mode 100644 index 0000000..c7d5169 --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt-6.d @@ -0,0 +1,15 @@ +#name: Warn with one missing GNU NOTE BTI input +#source: property-bti-pac1.s +#source: property-bti-pac2.s +#as: -mabi=lp64 -defsym __property_pac__=1 +#ld: -shared --force-bti +#warning: .*: warning: BTI turned on by --force-bti.*$ +#readelf: -n + +# Should warn about the missing input BTI NOTE but should +# still mark output as BTI + +Displaying notes found in: .note.gnu.property + Owner Data size Description + GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0 + Properties: AArch64 feature: BTI, PAC diff --git a/ld/testsuite/ld-aarch64/bti-plt-7.d b/ld/testsuite/ld-aarch64/bti-plt-7.d new file mode 100644 index 0000000..625f284 --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt-7.d @@ -0,0 +1,15 @@ +#name: Warn when neither inputs has GNU NOTE BTI +#source: property-bti-pac1.s +#source: plt_mapping_symbol.s +#as: -mabi=lp64 +#ld: -shared --force-bti +#warning: .*: warning: BTI turned on by --force-bti.*$ +#readelf: -n + +# Should warn about the missing input BTI NOTE but should +# still mark output as BTI + +Displaying notes found in: .note.gnu.property + Owner Data size Description + GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0 + Properties: AArch64 feature: BTI diff --git a/ld/testsuite/ld-aarch64/bti-plt-so.s b/ld/testsuite/ld-aarch64/bti-plt-so.s new file mode 100644 index 0000000..2c11356 --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt-so.s @@ -0,0 +1,41 @@ + .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 +bar: + 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 bar, .-bar + .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 0x1 /* BTI. */ +4: + .p2align 3 +5: diff --git a/ld/testsuite/ld-aarch64/bti-plt.ld b/ld/testsuite/ld-aarch64/bti-plt.ld new file mode 100644 index 0000000..8682623 --- /dev/null +++ b/ld/testsuite/ld-aarch64/bti-plt.ld @@ -0,0 +1,14 @@ +OUTPUT_ARCH(aarch64) +ENTRY(_start) +SECTIONS +{ + . = 0x10000; + .rela.plt : { *(.rela.plt) *(.rela.iplt) } + . = 0x18000; + .plt : { *(.plt) *(.iplt) } + . = 0x20000; + .text : { *(.text) } + . = 0x28000; + .got : { *(.got) *(.got.plt) } + .ARM.attributes 0 : { *(.ARM.atttributes) } +} -- cgit v1.1