Hello! > gcc/ > > * common/config/i386/i386-common.c (OPTION_MASK_ISA_IBT_SET): New. > (OPTION_MASK_ISA_SHSTK_SET): Likewise. > (OPTION_MASK_ISA_IBT_UNSET): Likewise. > (OPTION_MASK_ISA_SHSTK_UNSET): Likewise. > (ix86_handle_option): Add -mibt, -mshstk, -mcet handling. > * config.gcc (extra_headers): Add cetintrin.h for x86 targets. > (extra_objs): Add cet.o for Linux/x86 targets. > (tmake_file): Add i386/t-cet for Linux/x86 targets. > * config/i386/cet.c: New file. > * config/i386/cetintrin.h: Likewise. > * config/i386/t-cet: Likewise. > * config/i386/cpuid.h (bit_SHSTK): New. > (bit_IBT): Likewise. > * config/i386/driver-i386.c (host_detect_local_cpu): Detect and > pass IBT and SHSTK bits. > * config/i386/i386-builtin-types.def > (VOID_FTYPE_UNSIGNED_PVOID): New. > (VOID_FTYPE_UINT64_PVOID): Likewise. > * config/i386/i386-builtin.def: Add CET intrinsics. > * config/i386/i386-c.c (ix86_target_macros_internal): Add > OPTION_MASK_ISA_IBT, OPTION_MASK_ISA_SHSTK handling. > * config/i386/i386-passes.def: Add pass_insert_endbranch pass. > * config/i386/i386-protos.h (make_pass_insert_endbranch): New > prototype. > * config/i386/i386.c (rest_of_insert_endbranch): New. > (pass_data_insert_endbranch): Likewise. > (pass_insert_endbranch): Likewise. > (make_pass_insert_endbranch): Likewise. > (ix86_notrack_prefixed_insn_p): Likewise. > (ix86_target_string): Add -mibt, -mshstk flags. > (ix86_option_override_internal): Add flag_instrument_control_flow > processing. > (ix86_valid_target_attribute_inner_p): Set OPT_mibt, OPT_mshstk. > (ix86_print_operand): Add 'notrack' prefix output. > (ix86_init_mmx_sse_builtins): Add CET intrinsics. > (ix86_expand_builtin): Expand CET intrinsics. > (x86_output_mi_thunk): Add 'endbranch' instruction. > * config/i386/i386.h (TARGET_IBT): New. > (TARGET_IBT_P): Likewise. > (TARGET_SHSTK): Likewise. > (TARGET_SHSTK_P): Likewise. > * config/i386/i386.md (unspecv): Add UNSPECV_NOP_RDSSP, > UNSPECV_INCSSP, UNSPECV_SAVEPREVSSP, UNSPECV_RSTORSSP, > UNSPECV_WRSS, UNSPECV_WRUSS, UNSPECV_SETSSBSY, UNSPECV_CLRSSBSY. > (builtin_setjmp_setup): New pattern. > (builtin_longjmp): Likewise. > (rdssp<mode>): Likewise. > (incssp<mode>): Likewise. > (saveprevssp): Likewise. > (rstorssp): Likewise. > (wrss<mode>): Likewise. > (wruss<mode>): Likewise. > (setssbsy): Likewise. > (clrssbsy): Likewise. > (nop_endbr): Likewise. > * config/i386/i386.opt: Add -mcet, -mibt, -mshstk and -mcet-switch > options. > * config/i386/immintrin.h: Include <cetintrin.h>. > * config/i386/linux-common.h > (file_end_indicate_exec_stack_and_cet): New prototype. > (TARGET_ASM_FILE_END): New.
LGTM. OK for mainline. Thanks, Uros.
