This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[PATCH, i386, Pointer Bounds Checker 2/x] Intel Memory Protection Extensions (MPX) instructions support


Hi,

This patch introduces Intel MPX bound registers and instructions.  It was approved earlier for 4.9 and had no significant changes since then.  I'll assume patch is OK if no objections arise.

Patch was bootstrapped and tested for linux-x86_64.

Thanks,
Ilya
--
gcc/

2014-04-16  Ilya Enkovich  <ilya.enkovich@intel.com>

	* mode-classes.def (MODE_BOUND): New.
	* tree.def (BOUND_TYPE): New.
	* genmodes.c (complete_mode): Support MODE_BOUND.
	(BOUND_MODE): New.
	(make_bound_mode): New.
	* machmode.h (BOUND_MODE_P): New.
	* stor-layout.c (int_mode_for_mode): Support MODE_BOUND.
	(layout_type): Support BOUND_TYPE.
	* tree-pretty-print.c (dump_generic_node): Support BOUND_TYPE.
	* tree.c (build_int_cst_wide): Support BOUND_TYPE.
	(type_contains_placeholder_1): Likewise.
	* tree.h (BOUND_TYPE_P): New.
	* varasm.c (output_constant): Support BOUND_TYPE.
	* config/i386/constraints.md (B): New.
	(Ti): New.
	(Tb): New.
	* config/i386/i386-modes.def (BND32): New.
	(BND64): New.
	* config/i386/i386-protos.h (ix86_bnd_prefixed_insn_p): New.
	* config/i386/i386.c (isa_opts): Add mmpx.
	(regclass_map): Add bound registers.
	(dbx_register_map): Likewise.
	(dbx64_register_map): Likewise.
	(svr4_dbx_register_map): Likewise.
	(PTA_MPX): New.
	(ix86_option_override_internal) Support MPX ISA.
	(ix86_code_end): Add MPX bnd prefix.
	(output_set_got): Likewise.
	(ix86_output_call_insn): Likewise.
	(get_some_local_dynamic_name): Add '!' (MPX bnd) print prefix support.
	(ix86_print_operand_punct_valid_p): Likewise.
	(ix86_print_operand_address): Support UNSPEC_BNDMK_ADDR and
	UNSPEC_BNDMK_ADDR.
	(ix86_class_likely_spilled_p): Add bound regs support.
	(ix86_hard_regno_mode_ok): Likewise.
	(x86_order_regs_for_local_alloc): Likewise.
	(ix86_bnd_prefixed_insn_p): New.
	* config/i386/i386.h (FIRST_PSEUDO_REGISTER): Fix to new value.
	(FIXED_REGISTERS): Add bound registers.
	(CALL_USED_REGISTERS): Likewise.
	(REG_ALLOC_ORDER): Likewise.
	(HARD_REGNO_NREGS): Likewise.
	(TARGET_MPX): New.
	(VALID_BND_REG_MODE): New.
	(FIRST_BND_REG): New.
	(LAST_BND_REG): New.
	(reg_class): Add BND_REGS.
	(REG_CLASS_NAMES): Likewise.
	(REG_CLASS_CONTENTS): Likewise.
	(BND_REGNO_P): New.
	(ANY_BND_REG_P): New.
	(BNDmode): New.
	(HI_REGISTER_NAMES): Add bound registers.
	* config/i386/i386.md (UNSPEC_BNDMK): New.
	(UNSPEC_BNDMK_ADDR): New.
	(UNSPEC_BNDSTX): New.
	(UNSPEC_BNDLDX): New.
	(UNSPEC_BNDLDX_ADDR): New.
	(UNSPEC_BNDCL): New.
	(UNSPEC_BNDCU): New.
	(UNSPEC_BNDCN): New.
	(UNSPEC_MPX_FENCE): New.
	(BND0_REG): New.
	(BND1_REG): New.
	(type): Add mpxmov, mpxmk, mpxchk, mpxld, mpxst.
	(length_immediate): Likewise.
	(prefix_0f): Likewise.
	(memory): Likewise.
	(prefix_rep): Check for bnd prefix.
	(BND): New.
	(bnd_ptr): New.
	(BNDCHECK): New.
	(bndcheck): New.
	(*jcc_1): Add MPX bnd prefix and fix length.
	(*jcc_2): Likewise.
	(jump): Likewise.
	(simple_return_internal): Likewise.
	(simple_return_pop_internal): Likewise.
	(*indirect_jump): Add MPX bnd prefix.
	(*tablejump_1): Likewise.
	(simple_return_internal_long): Likewise.
	(simple_return_indirect_internal): Likewise.
	(<mode>_mk): New.
	(*<mode>_mk): New.
	(mov<mode>): New.
	(*mov<mode>_internal_mpx): New.
	(<mode>_<bndcheck>): New.
	(*<mode>_<bndcheck>): New.
	(<mode>_ldx): New.
	(*<mode>_ldx): New.
	(<mode>_stx): New.
	(*<mode>_stx): New.
	* config/i386/predicates.md (lea_address_operand) Rename to...
	(address_no_seg_operand): ... this.
	(address_mpx_no_base_operand): New.
	(address_mpx_no_index_operand): New.
	(bnd_mem_operator): New.
	* config/i386/i386.opt (mmpx): New.

Attachment: mpx-2-isa.patch
Description: Text document


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]