2022-01-03 10:42:10 +01:00
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/* Copyright (C) 2017-2022 Free Software Foundation, Inc.
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2017-01-20 01:21:34 +01:00
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Contributed by ARM Ltd.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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2017-01-20 22:03:41 +01:00
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#if !defined (AARCH64_UNWIND_H) && !defined (__ILP32__)
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2017-01-20 01:21:34 +01:00
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#define AARCH64_UNWIND_H
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#define DWARF_REGNUM_AARCH64_RA_STATE 34
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2020-06-04 10:33:35 +02:00
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#define MD_DEMANGLE_RETURN_ADDR(context, fs, addr) \
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aarch64_demangle_return_addr (context, fs, addr)
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2017-01-20 01:21:34 +01:00
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#define MD_FROB_UPDATE_CONTEXT(context, fs) \
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aarch64_frob_update_context (context, fs)
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[PATCH 3/3][GCC][AARCH64] Add support for pointer authentication B key
gcc/
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* config/aarch64/aarch64-builtins.c (aarch64_builtins): Add
AARCH64_PAUTH_BUILTIN_AUTIB1716 and AARCH64_PAUTH_BUILTIN_PACIB1716.
* config/aarch64/aarch64-builtins.c (aarch64_init_pauth_hint_builtins):
Add autib1716 and pacib1716 initialisation.
* config/aarch64/aarch64-builtins.c (aarch64_expand_builtin): Add checks
for autib1716 and pacib1716.
* config/aarch64/aarch64-protos.h (aarch64_key_type,
aarch64_post_cfi_startproc): Define.
* config/aarch64/aarch64-protos.h (aarch64_ra_sign_key): Define extern.
* config/aarch64/aarch64.c (aarch64_handle_standard_branch_protection,
aarch64_handle_pac_ret_protection): Set default sign key to A.
* config/aarch64/aarch64.c (aarch64_expand_epilogue,
aarch64_expand_prologue): Add check for b-key.
* config/aarch64/aarch64.c (aarch64_ra_sign_key,
aarch64_post_cfi_startproc, aarch64_handle_pac_ret_b_key): Define.
* config/aarch64/aarch64.h (TARGET_ASM_POST_CFI_STARTPROC): Define.
* config/aarch64/aarch64.c (aarch64_pac_ret_subtypes): Add "b-key".
* config/aarch64/aarch64.md (unspec): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_AUTIASP, UNSPEC_AUTIBSP, UNSPEC_PACIA1716,
UNSPEC_PACIB1716, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/aarch64.md (do_return): Add check for b-key.
* config/aarch64/aarch64.md (<pauth_mnem_prefix>sp): Replace
pauth_hint_num_a with pauth_hint_num.
* config/aarch64/aarch64.md (<pauth_mnem_prefix>1716): Replace
pauth_hint_num_a with pauth_hint_num.
* config/aarch64/aarch64.opt (msign-return-address=): Deprecate.
* config/aarch64/iterators.md (PAUTH_LR_SP): Add UNSPEC_AUTIASP,
UNSPEC_AUTIBSP, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/iterators.md (PAUTH_17_16): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_PACIA1716, UNSPEC_PACIB1716.
* config/aarch64/iterators.md (pauth_mnem_prefix): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_PACIA1716, UNSPEC_PACIB1716, UNSPEC_AUTIASP,
UNSPEC_AUTIBSP, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/iterators.md (pauth_hint_num_a): Replace
UNSPEC_PACI1716 and UNSPEC_AUTI1716 with UNSPEC_PACIA1716 and
UNSPEC_AUTIA1716 respectively.
* config/aarch64/iterators.md (pauth_hint_num_a): Rename to pauth_hint_num
and add UNSPEC_PACIBSP, UNSPEC_AUTIBSP, UNSPEC_PACIB1716, UNSPEC_AUTIB1716.
* doc/invoke.texi (-mbranch-protection): Add b-key type.
* config/aarch64/aarch64-bti-insert.c (aarch64_pac_insn_p): Rename
UNSPEC_PACISP to UNSPEC_PACIASP and UNSPEC_PACIBSP.
gcc/testsuite
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* gcc.target/aarch64/return_address_sign_b_1.c: New file.
* gcc.target/aarch64/return_address_sign_b_2.c: New file.
* gcc.target/aarch64/return_address_sign_b_3.c: New file.
* gcc.target/aarch64/return_address_sign_b_exception.c: New file.
* gcc.target/aarch64/return_address_sign_ab_exception.c: New file.
* gcc.target/aarch64/return_address_sign_builtin.c: New file
libgcc/
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* config/aarch64/aarch64-unwind.h (aarch64_cie_signed_with_b_key): New
function.
* config/aarch64/aarch64-unwind.h (aarch64_post_extract_frame_addr,
aarch64_post_frob_eh_handler_addr): Add check for b-key.
* config/aarch64/aarch64-unwind-h (aarch64_post_extract_frame_addr,
aarch64_post_frob_eh_handler_addr, aarch64_post_frob_update_context):
Rename RA_A_SIGNED_BIT to RA_SIGNED_BIT.
* unwind-dw2-fde.c (get_cie_encoding): Add check for 'B' in augmentation
string.
* unwind-dw2.c (extract_cie_info): Add check for 'B' in augmentation
string.
(RA_A_SIGNED_BIT): Rename to RA_SIGNED_BIT.
From-SVN: r271735
2019-05-29 11:22:17 +02:00
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static inline int
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aarch64_cie_signed_with_b_key (struct _Unwind_Context *context)
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{
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const struct dwarf_fde *fde = _Unwind_Find_FDE (context->bases.func,
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&context->bases);
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if (fde != NULL)
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{
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const struct dwarf_cie *cie = get_cie (fde);
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if (cie != NULL)
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{
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char *aug_str = cie->augmentation;
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return strchr (aug_str, 'B') == NULL ? 0 : 1;
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}
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}
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return 0;
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}
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2020-06-04 10:33:35 +02:00
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/* Do AArch64 private extraction on ADDR_WORD based on context info CONTEXT and
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unwind frame info FS. If ADDR_WORD is signed, we do address authentication
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on it using CFA of current frame. */
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2017-01-20 01:21:34 +01:00
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static inline void *
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2020-06-04 10:33:35 +02:00
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aarch64_demangle_return_addr (struct _Unwind_Context *context,
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2020-09-17 11:40:23 +02:00
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_Unwind_FrameState *fs ATTRIBUTE_UNUSED,
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_Unwind_Word addr_word)
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2017-01-20 01:21:34 +01:00
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{
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2020-06-04 10:33:35 +02:00
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void *addr = (void *)addr_word;
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[PATCH 3/3][GCC][AARCH64] Add support for pointer authentication B key
gcc/
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* config/aarch64/aarch64-builtins.c (aarch64_builtins): Add
AARCH64_PAUTH_BUILTIN_AUTIB1716 and AARCH64_PAUTH_BUILTIN_PACIB1716.
* config/aarch64/aarch64-builtins.c (aarch64_init_pauth_hint_builtins):
Add autib1716 and pacib1716 initialisation.
* config/aarch64/aarch64-builtins.c (aarch64_expand_builtin): Add checks
for autib1716 and pacib1716.
* config/aarch64/aarch64-protos.h (aarch64_key_type,
aarch64_post_cfi_startproc): Define.
* config/aarch64/aarch64-protos.h (aarch64_ra_sign_key): Define extern.
* config/aarch64/aarch64.c (aarch64_handle_standard_branch_protection,
aarch64_handle_pac_ret_protection): Set default sign key to A.
* config/aarch64/aarch64.c (aarch64_expand_epilogue,
aarch64_expand_prologue): Add check for b-key.
* config/aarch64/aarch64.c (aarch64_ra_sign_key,
aarch64_post_cfi_startproc, aarch64_handle_pac_ret_b_key): Define.
* config/aarch64/aarch64.h (TARGET_ASM_POST_CFI_STARTPROC): Define.
* config/aarch64/aarch64.c (aarch64_pac_ret_subtypes): Add "b-key".
* config/aarch64/aarch64.md (unspec): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_AUTIASP, UNSPEC_AUTIBSP, UNSPEC_PACIA1716,
UNSPEC_PACIB1716, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/aarch64.md (do_return): Add check for b-key.
* config/aarch64/aarch64.md (<pauth_mnem_prefix>sp): Replace
pauth_hint_num_a with pauth_hint_num.
* config/aarch64/aarch64.md (<pauth_mnem_prefix>1716): Replace
pauth_hint_num_a with pauth_hint_num.
* config/aarch64/aarch64.opt (msign-return-address=): Deprecate.
* config/aarch64/iterators.md (PAUTH_LR_SP): Add UNSPEC_AUTIASP,
UNSPEC_AUTIBSP, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/iterators.md (PAUTH_17_16): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_PACIA1716, UNSPEC_PACIB1716.
* config/aarch64/iterators.md (pauth_mnem_prefix): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_PACIA1716, UNSPEC_PACIB1716, UNSPEC_AUTIASP,
UNSPEC_AUTIBSP, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/iterators.md (pauth_hint_num_a): Replace
UNSPEC_PACI1716 and UNSPEC_AUTI1716 with UNSPEC_PACIA1716 and
UNSPEC_AUTIA1716 respectively.
* config/aarch64/iterators.md (pauth_hint_num_a): Rename to pauth_hint_num
and add UNSPEC_PACIBSP, UNSPEC_AUTIBSP, UNSPEC_PACIB1716, UNSPEC_AUTIB1716.
* doc/invoke.texi (-mbranch-protection): Add b-key type.
* config/aarch64/aarch64-bti-insert.c (aarch64_pac_insn_p): Rename
UNSPEC_PACISP to UNSPEC_PACIASP and UNSPEC_PACIBSP.
gcc/testsuite
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* gcc.target/aarch64/return_address_sign_b_1.c: New file.
* gcc.target/aarch64/return_address_sign_b_2.c: New file.
* gcc.target/aarch64/return_address_sign_b_3.c: New file.
* gcc.target/aarch64/return_address_sign_b_exception.c: New file.
* gcc.target/aarch64/return_address_sign_ab_exception.c: New file.
* gcc.target/aarch64/return_address_sign_builtin.c: New file
libgcc/
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* config/aarch64/aarch64-unwind.h (aarch64_cie_signed_with_b_key): New
function.
* config/aarch64/aarch64-unwind.h (aarch64_post_extract_frame_addr,
aarch64_post_frob_eh_handler_addr): Add check for b-key.
* config/aarch64/aarch64-unwind-h (aarch64_post_extract_frame_addr,
aarch64_post_frob_eh_handler_addr, aarch64_post_frob_update_context):
Rename RA_A_SIGNED_BIT to RA_SIGNED_BIT.
* unwind-dw2-fde.c (get_cie_encoding): Add check for 'B' in augmentation
string.
* unwind-dw2.c (extract_cie_info): Add check for 'B' in augmentation
string.
(RA_A_SIGNED_BIT): Rename to RA_SIGNED_BIT.
From-SVN: r271735
2019-05-29 11:22:17 +02:00
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if (context->flags & RA_SIGNED_BIT)
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2017-01-20 01:21:34 +01:00
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{
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_Unwind_Word salt = (_Unwind_Word) context->cfa;
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[PATCH 3/3][GCC][AARCH64] Add support for pointer authentication B key
gcc/
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* config/aarch64/aarch64-builtins.c (aarch64_builtins): Add
AARCH64_PAUTH_BUILTIN_AUTIB1716 and AARCH64_PAUTH_BUILTIN_PACIB1716.
* config/aarch64/aarch64-builtins.c (aarch64_init_pauth_hint_builtins):
Add autib1716 and pacib1716 initialisation.
* config/aarch64/aarch64-builtins.c (aarch64_expand_builtin): Add checks
for autib1716 and pacib1716.
* config/aarch64/aarch64-protos.h (aarch64_key_type,
aarch64_post_cfi_startproc): Define.
* config/aarch64/aarch64-protos.h (aarch64_ra_sign_key): Define extern.
* config/aarch64/aarch64.c (aarch64_handle_standard_branch_protection,
aarch64_handle_pac_ret_protection): Set default sign key to A.
* config/aarch64/aarch64.c (aarch64_expand_epilogue,
aarch64_expand_prologue): Add check for b-key.
* config/aarch64/aarch64.c (aarch64_ra_sign_key,
aarch64_post_cfi_startproc, aarch64_handle_pac_ret_b_key): Define.
* config/aarch64/aarch64.h (TARGET_ASM_POST_CFI_STARTPROC): Define.
* config/aarch64/aarch64.c (aarch64_pac_ret_subtypes): Add "b-key".
* config/aarch64/aarch64.md (unspec): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_AUTIASP, UNSPEC_AUTIBSP, UNSPEC_PACIA1716,
UNSPEC_PACIB1716, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/aarch64.md (do_return): Add check for b-key.
* config/aarch64/aarch64.md (<pauth_mnem_prefix>sp): Replace
pauth_hint_num_a with pauth_hint_num.
* config/aarch64/aarch64.md (<pauth_mnem_prefix>1716): Replace
pauth_hint_num_a with pauth_hint_num.
* config/aarch64/aarch64.opt (msign-return-address=): Deprecate.
* config/aarch64/iterators.md (PAUTH_LR_SP): Add UNSPEC_AUTIASP,
UNSPEC_AUTIBSP, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/iterators.md (PAUTH_17_16): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_PACIA1716, UNSPEC_PACIB1716.
* config/aarch64/iterators.md (pauth_mnem_prefix): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_PACIA1716, UNSPEC_PACIB1716, UNSPEC_AUTIASP,
UNSPEC_AUTIBSP, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/iterators.md (pauth_hint_num_a): Replace
UNSPEC_PACI1716 and UNSPEC_AUTI1716 with UNSPEC_PACIA1716 and
UNSPEC_AUTIA1716 respectively.
* config/aarch64/iterators.md (pauth_hint_num_a): Rename to pauth_hint_num
and add UNSPEC_PACIBSP, UNSPEC_AUTIBSP, UNSPEC_PACIB1716, UNSPEC_AUTIB1716.
* doc/invoke.texi (-mbranch-protection): Add b-key type.
* config/aarch64/aarch64-bti-insert.c (aarch64_pac_insn_p): Rename
UNSPEC_PACISP to UNSPEC_PACIASP and UNSPEC_PACIBSP.
gcc/testsuite
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* gcc.target/aarch64/return_address_sign_b_1.c: New file.
* gcc.target/aarch64/return_address_sign_b_2.c: New file.
* gcc.target/aarch64/return_address_sign_b_3.c: New file.
* gcc.target/aarch64/return_address_sign_b_exception.c: New file.
* gcc.target/aarch64/return_address_sign_ab_exception.c: New file.
* gcc.target/aarch64/return_address_sign_builtin.c: New file
libgcc/
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* config/aarch64/aarch64-unwind.h (aarch64_cie_signed_with_b_key): New
function.
* config/aarch64/aarch64-unwind.h (aarch64_post_extract_frame_addr,
aarch64_post_frob_eh_handler_addr): Add check for b-key.
* config/aarch64/aarch64-unwind-h (aarch64_post_extract_frame_addr,
aarch64_post_frob_eh_handler_addr, aarch64_post_frob_update_context):
Rename RA_A_SIGNED_BIT to RA_SIGNED_BIT.
* unwind-dw2-fde.c (get_cie_encoding): Add check for 'B' in augmentation
string.
* unwind-dw2.c (extract_cie_info): Add check for 'B' in augmentation
string.
(RA_A_SIGNED_BIT): Rename to RA_SIGNED_BIT.
From-SVN: r271735
2019-05-29 11:22:17 +02:00
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if (aarch64_cie_signed_with_b_key (context) != 0)
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return __builtin_aarch64_autib1716 (addr, salt);
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2017-01-20 01:21:34 +01:00
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return __builtin_aarch64_autia1716 (addr, salt);
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}
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else
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return addr;
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}
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/* Do AArch64 private initialization on CONTEXT based on frame info FS. Mark
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CONTEXT as return address signed if bit 0 of DWARF_REGNUM_AARCH64_RA_STATE is
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set. */
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static inline void
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aarch64_frob_update_context (struct _Unwind_Context *context,
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_Unwind_FrameState *fs)
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{
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if (fs->regs.reg[DWARF_REGNUM_AARCH64_RA_STATE].loc.offset & 0x1)
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/* The flag is used for re-authenticating EH handler's address. */
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[PATCH 3/3][GCC][AARCH64] Add support for pointer authentication B key
gcc/
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* config/aarch64/aarch64-builtins.c (aarch64_builtins): Add
AARCH64_PAUTH_BUILTIN_AUTIB1716 and AARCH64_PAUTH_BUILTIN_PACIB1716.
* config/aarch64/aarch64-builtins.c (aarch64_init_pauth_hint_builtins):
Add autib1716 and pacib1716 initialisation.
* config/aarch64/aarch64-builtins.c (aarch64_expand_builtin): Add checks
for autib1716 and pacib1716.
* config/aarch64/aarch64-protos.h (aarch64_key_type,
aarch64_post_cfi_startproc): Define.
* config/aarch64/aarch64-protos.h (aarch64_ra_sign_key): Define extern.
* config/aarch64/aarch64.c (aarch64_handle_standard_branch_protection,
aarch64_handle_pac_ret_protection): Set default sign key to A.
* config/aarch64/aarch64.c (aarch64_expand_epilogue,
aarch64_expand_prologue): Add check for b-key.
* config/aarch64/aarch64.c (aarch64_ra_sign_key,
aarch64_post_cfi_startproc, aarch64_handle_pac_ret_b_key): Define.
* config/aarch64/aarch64.h (TARGET_ASM_POST_CFI_STARTPROC): Define.
* config/aarch64/aarch64.c (aarch64_pac_ret_subtypes): Add "b-key".
* config/aarch64/aarch64.md (unspec): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_AUTIASP, UNSPEC_AUTIBSP, UNSPEC_PACIA1716,
UNSPEC_PACIB1716, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/aarch64.md (do_return): Add check for b-key.
* config/aarch64/aarch64.md (<pauth_mnem_prefix>sp): Replace
pauth_hint_num_a with pauth_hint_num.
* config/aarch64/aarch64.md (<pauth_mnem_prefix>1716): Replace
pauth_hint_num_a with pauth_hint_num.
* config/aarch64/aarch64.opt (msign-return-address=): Deprecate.
* config/aarch64/iterators.md (PAUTH_LR_SP): Add UNSPEC_AUTIASP,
UNSPEC_AUTIBSP, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/iterators.md (PAUTH_17_16): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_PACIA1716, UNSPEC_PACIB1716.
* config/aarch64/iterators.md (pauth_mnem_prefix): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_PACIA1716, UNSPEC_PACIB1716, UNSPEC_AUTIASP,
UNSPEC_AUTIBSP, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/iterators.md (pauth_hint_num_a): Replace
UNSPEC_PACI1716 and UNSPEC_AUTI1716 with UNSPEC_PACIA1716 and
UNSPEC_AUTIA1716 respectively.
* config/aarch64/iterators.md (pauth_hint_num_a): Rename to pauth_hint_num
and add UNSPEC_PACIBSP, UNSPEC_AUTIBSP, UNSPEC_PACIB1716, UNSPEC_AUTIB1716.
* doc/invoke.texi (-mbranch-protection): Add b-key type.
* config/aarch64/aarch64-bti-insert.c (aarch64_pac_insn_p): Rename
UNSPEC_PACISP to UNSPEC_PACIASP and UNSPEC_PACIBSP.
gcc/testsuite
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* gcc.target/aarch64/return_address_sign_b_1.c: New file.
* gcc.target/aarch64/return_address_sign_b_2.c: New file.
* gcc.target/aarch64/return_address_sign_b_3.c: New file.
* gcc.target/aarch64/return_address_sign_b_exception.c: New file.
* gcc.target/aarch64/return_address_sign_ab_exception.c: New file.
* gcc.target/aarch64/return_address_sign_builtin.c: New file
libgcc/
2019-05-29 Sam Tebbs <sam.tebbs@arm.com>
* config/aarch64/aarch64-unwind.h (aarch64_cie_signed_with_b_key): New
function.
* config/aarch64/aarch64-unwind.h (aarch64_post_extract_frame_addr,
aarch64_post_frob_eh_handler_addr): Add check for b-key.
* config/aarch64/aarch64-unwind-h (aarch64_post_extract_frame_addr,
aarch64_post_frob_eh_handler_addr, aarch64_post_frob_update_context):
Rename RA_A_SIGNED_BIT to RA_SIGNED_BIT.
* unwind-dw2-fde.c (get_cie_encoding): Add check for 'B' in augmentation
string.
* unwind-dw2.c (extract_cie_info): Add check for 'B' in augmentation
string.
(RA_A_SIGNED_BIT): Rename to RA_SIGNED_BIT.
From-SVN: r271735
2019-05-29 11:22:17 +02:00
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context->flags |= RA_SIGNED_BIT;
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2020-04-03 11:35:41 +02:00
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else
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context->flags &= ~RA_SIGNED_BIT;
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2017-01-20 01:21:34 +01:00
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return;
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}
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2017-01-20 22:03:41 +01:00
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#endif /* defined AARCH64_UNWIND_H && defined __ILP32__ */
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