The libgcc changes have been acknowledged off-list. Committed as r271735.
On 01/03/2019 14:12, Sam Tebbs wrote: > On 31/01/2019 14:54, Sam Tebbs wrote: >> <snip> >>> ping 3. The preceding two patches were committed a while ago but require >>> the minor libgcc changes in this patch, which are the only parts left to >>> be reviewed. >> ping 4 > Attached is a rebased patch made to work on top of Sudi Das' BTI patch > (by renaming UNSPEC_PACISP to UNSPEC_PACIASP and UNSPEC_PACIBSP in > aarch64-bti-insert.c). The updated changelog is below. > > Are the libgcc changes OK for trunk? > > gcc/ > 2019-03-01 Sam Tebbs<sam.te...@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 > 2019-03-01 Sam Tebbs<sam.te...@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/ > 2019-03-01 Sam Tebbs<sam.te...@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. >
