使用说明：
将下面文件放在同一目录后执行make，会生成memcpy_sve.so
执行程序前将so加载 LD_PRELOAD=/PATH/TO/memcpy_sve.so ./test

dwarf2.h：

/* Declarations and definitions of codes relating to the DWARF2 symbolic
   debugging information format.
   Copyright (C) 1992-2023 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifndef _DWARF2_H
#define _DWARF2_H	1

/* This file is derived from the DWARF specification (a public document)
   Revision 2.0.0 (July 27, 1993) developed by the UNIX International
   Programming Languages Special Interest Group (UI/PLSIG) and distributed
   by UNIX International.  Copies of this specification are available from
   UNIX International, 20 Waterview Boulevard, Parsippany, NJ, 07054.  */

/* This file is shared between GCC and GDB, and should not contain
   prototypes.  */

#ifndef __ASSEMBLER__
/* Tag names and codes.  */

enum dwarf_tag
  {
    DW_TAG_padding = 0x00,
    DW_TAG_array_type = 0x01,
    DW_TAG_class_type = 0x02,
    DW_TAG_entry_point = 0x03,
    DW_TAG_enumeration_type = 0x04,
    DW_TAG_formal_parameter = 0x05,
    DW_TAG_imported_declaration = 0x08,
    DW_TAG_label = 0x0a,
    DW_TAG_lexical_block = 0x0b,
    DW_TAG_member = 0x0d,
    DW_TAG_pointer_type = 0x0f,
    DW_TAG_reference_type = 0x10,
    DW_TAG_compile_unit = 0x11,
    DW_TAG_string_type = 0x12,
    DW_TAG_structure_type = 0x13,
    DW_TAG_subroutine_type = 0x15,
    DW_TAG_typedef = 0x16,
    DW_TAG_union_type = 0x17,
    DW_TAG_unspecified_parameters = 0x18,
    DW_TAG_variant = 0x19,
    DW_TAG_common_block = 0x1a,
    DW_TAG_common_inclusion = 0x1b,
    DW_TAG_inheritance = 0x1c,
    DW_TAG_inlined_subroutine = 0x1d,
    DW_TAG_module = 0x1e,
    DW_TAG_ptr_to_member_type = 0x1f,
    DW_TAG_set_type = 0x20,
    DW_TAG_subrange_type = 0x21,
    DW_TAG_with_stmt = 0x22,
    DW_TAG_access_declaration = 0x23,
    DW_TAG_base_type = 0x24,
    DW_TAG_catch_block = 0x25,
    DW_TAG_const_type = 0x26,
    DW_TAG_constant = 0x27,
    DW_TAG_enumerator = 0x28,
    DW_TAG_file_type = 0x29,
    DW_TAG_friend = 0x2a,
    DW_TAG_namelist = 0x2b,
    DW_TAG_namelist_item = 0x2c,
    DW_TAG_packed_type = 0x2d,
    DW_TAG_subprogram = 0x2e,
    DW_TAG_template_type_param = 0x2f,
    DW_TAG_template_value_param = 0x30,
    DW_TAG_thrown_type = 0x31,
    DW_TAG_try_block = 0x32,
    DW_TAG_variant_part = 0x33,
    DW_TAG_variable = 0x34,
    DW_TAG_volatile_type = 0x35,
    /* SGI/MIPS Extensions */
    DW_TAG_MIPS_loop = 0x4081,
    /* GNU extensions */
    DW_TAG_format_label = 0x4101,	/* for FORTRAN 77 and Fortran 90 */
    DW_TAG_function_template = 0x4102,	/* for C++ */
    DW_TAG_class_template = 0x4103,	/* for C++ */
    DW_TAG_GNU_BINCL = 0x4104,
    DW_TAG_GNU_EINCL = 0x4105
  };

#define DW_TAG_lo_user	0x4080
#define DW_TAG_hi_user	0xffff

/* flag that tells whether entry has a child or not */
#define DW_children_no   0
#define	DW_children_yes  1

/* Form names and codes.  */
enum dwarf_form
  {
    DW_FORM_addr = 0x01,
    DW_FORM_block2 = 0x03,
    DW_FORM_block4 = 0x04,
    DW_FORM_data2 = 0x05,
    DW_FORM_data4 = 0x06,
    DW_FORM_data8 = 0x07,
    DW_FORM_string = 0x08,
    DW_FORM_block = 0x09,
    DW_FORM_block1 = 0x0a,
    DW_FORM_data1 = 0x0b,
    DW_FORM_flag = 0x0c,
    DW_FORM_sdata = 0x0d,
    DW_FORM_strp = 0x0e,
    DW_FORM_udata = 0x0f,
    DW_FORM_ref_addr = 0x10,
    DW_FORM_ref1 = 0x11,
    DW_FORM_ref2 = 0x12,
    DW_FORM_ref4 = 0x13,
    DW_FORM_ref8 = 0x14,
    DW_FORM_ref_udata = 0x15,
    DW_FORM_indirect = 0x16
  };

/* Attribute names and codes.  */

enum dwarf_attribute
  {
    DW_AT_sibling = 0x01,
    DW_AT_location = 0x02,
    DW_AT_name = 0x03,
    DW_AT_ordering = 0x09,
    DW_AT_subscr_data = 0x0a,
    DW_AT_byte_size = 0x0b,
    DW_AT_bit_offset = 0x0c,
    DW_AT_bit_size = 0x0d,
    DW_AT_element_list = 0x0f,
    DW_AT_stmt_list = 0x10,
    DW_AT_low_pc = 0x11,
    DW_AT_high_pc = 0x12,
    DW_AT_language = 0x13,
    DW_AT_member = 0x14,
    DW_AT_discr = 0x15,
    DW_AT_discr_value = 0x16,
    DW_AT_visibility = 0x17,
    DW_AT_import = 0x18,
    DW_AT_string_length = 0x19,
    DW_AT_common_reference = 0x1a,
    DW_AT_comp_dir = 0x1b,
    DW_AT_const_value = 0x1c,
    DW_AT_containing_type = 0x1d,
    DW_AT_default_value = 0x1e,
    DW_AT_inline = 0x20,
    DW_AT_is_optional = 0x21,
    DW_AT_lower_bound = 0x22,
    DW_AT_producer = 0x25,
    DW_AT_prototyped = 0x27,
    DW_AT_return_addr = 0x2a,
    DW_AT_start_scope = 0x2c,
    DW_AT_stride_size = 0x2e,
    DW_AT_upper_bound = 0x2f,
    DW_AT_abstract_origin = 0x31,
    DW_AT_accessibility = 0x32,
    DW_AT_address_class = 0x33,
    DW_AT_artificial = 0x34,
    DW_AT_base_types = 0x35,
    DW_AT_calling_convention = 0x36,
    DW_AT_count = 0x37,
    DW_AT_data_member_location = 0x38,
    DW_AT_decl_column = 0x39,
    DW_AT_decl_file = 0x3a,
    DW_AT_decl_line = 0x3b,
    DW_AT_declaration = 0x3c,
    DW_AT_discr_list = 0x3d,
    DW_AT_encoding = 0x3e,
    DW_AT_external = 0x3f,
    DW_AT_frame_base = 0x40,
    DW_AT_friend = 0x41,
    DW_AT_identifier_case = 0x42,
    DW_AT_macro_info = 0x43,
    DW_AT_namelist_items = 0x44,
    DW_AT_priority = 0x45,
    DW_AT_segment = 0x46,
    DW_AT_specification = 0x47,
    DW_AT_static_link = 0x48,
    DW_AT_type = 0x49,
    DW_AT_use_location = 0x4a,
    DW_AT_variable_parameter = 0x4b,
    DW_AT_virtuality = 0x4c,
    DW_AT_vtable_elem_location = 0x4d,
    /* SGI/MIPS Extensions */
    DW_AT_MIPS_fde = 0x2001,
    DW_AT_MIPS_loop_begin = 0x2002,
    DW_AT_MIPS_tail_loop_begin = 0x2003,
    DW_AT_MIPS_epilog_begin = 0x2004,
    DW_AT_MIPS_loop_unroll_factor = 0x2005,
    DW_AT_MIPS_software_pipeline_depth = 0x2006,
    DW_AT_MIPS_linkage_name = 0x2007,
    DW_AT_MIPS_stride = 0x2008,
    DW_AT_MIPS_abstract_name = 0x2009,
    DW_AT_MIPS_clone_origin = 0x200a,
    DW_AT_MIPS_has_inlines = 0x200b,
    /* GNU extensions.  */
    DW_AT_sf_names = 0x2101,
    DW_AT_src_info = 0x2102,
    DW_AT_mac_info = 0x2103,
    DW_AT_src_coords = 0x2104,
    DW_AT_body_begin = 0x2105,
    DW_AT_body_end = 0x2106
  };

#define DW_AT_lo_user	0x2000	/* implementation-defined range start */
#define DW_AT_hi_user	0x3ff0	/* implementation-defined range end */

/* Location atom names and codes.  */

enum dwarf_location_atom
  {
    DW_OP_addr = 0x03,
    DW_OP_deref = 0x06,
    DW_OP_const1u = 0x08,
    DW_OP_const1s = 0x09,
    DW_OP_const2u = 0x0a,
    DW_OP_const2s = 0x0b,
    DW_OP_const4u = 0x0c,
    DW_OP_const4s = 0x0d,
    DW_OP_const8u = 0x0e,
    DW_OP_const8s = 0x0f,
    DW_OP_constu = 0x10,
    DW_OP_consts = 0x11,
    DW_OP_dup = 0x12,
    DW_OP_drop = 0x13,
    DW_OP_over = 0x14,
    DW_OP_pick = 0x15,
    DW_OP_swap = 0x16,
    DW_OP_rot = 0x17,
    DW_OP_xderef = 0x18,
    DW_OP_abs = 0x19,
    DW_OP_and = 0x1a,
    DW_OP_div = 0x1b,
    DW_OP_minus = 0x1c,
    DW_OP_mod = 0x1d,
    DW_OP_mul = 0x1e,
    DW_OP_neg = 0x1f,
    DW_OP_not = 0x20,
    DW_OP_or = 0x21,
    DW_OP_plus = 0x22,
    DW_OP_plus_uconst = 0x23,
    DW_OP_shl = 0x24,
    DW_OP_shr = 0x25,
    DW_OP_shra = 0x26,
    DW_OP_xor = 0x27,
    DW_OP_bra = 0x28,
    DW_OP_eq = 0x29,
    DW_OP_ge = 0x2a,
    DW_OP_gt = 0x2b,
    DW_OP_le = 0x2c,
    DW_OP_lt = 0x2d,
    DW_OP_ne = 0x2e,
    DW_OP_skip = 0x2f,
    DW_OP_lit0 = 0x30,
    DW_OP_lit1 = 0x31,
    DW_OP_lit2 = 0x32,
    DW_OP_lit3 = 0x33,
    DW_OP_lit4 = 0x34,
    DW_OP_lit5 = 0x35,
    DW_OP_lit6 = 0x36,
    DW_OP_lit7 = 0x37,
    DW_OP_lit8 = 0x38,
    DW_OP_lit9 = 0x39,
    DW_OP_lit10 = 0x3a,
    DW_OP_lit11 = 0x3b,
    DW_OP_lit12 = 0x3c,
    DW_OP_lit13 = 0x3d,
    DW_OP_lit14 = 0x3e,
    DW_OP_lit15 = 0x3f,
    DW_OP_lit16 = 0x40,
    DW_OP_lit17 = 0x41,
    DW_OP_lit18 = 0x42,
    DW_OP_lit19 = 0x43,
    DW_OP_lit20 = 0x44,
    DW_OP_lit21 = 0x45,
    DW_OP_lit22 = 0x46,
    DW_OP_lit23 = 0x47,
    DW_OP_lit24 = 0x48,
    DW_OP_lit25 = 0x49,
    DW_OP_lit26 = 0x4a,
    DW_OP_lit27 = 0x4b,
    DW_OP_lit28 = 0x4c,
    DW_OP_lit29 = 0x4d,
    DW_OP_lit30 = 0x4e,
    DW_OP_lit31 = 0x4f,
    DW_OP_reg0 = 0x50,
    DW_OP_reg1 = 0x51,
    DW_OP_reg2 = 0x52,
    DW_OP_reg3 = 0x53,
    DW_OP_reg4 = 0x54,
    DW_OP_reg5 = 0x55,
    DW_OP_reg6 = 0x56,
    DW_OP_reg7 = 0x57,
    DW_OP_reg8 = 0x58,
    DW_OP_reg9 = 0x59,
    DW_OP_reg10 = 0x5a,
    DW_OP_reg11 = 0x5b,
    DW_OP_reg12 = 0x5c,
    DW_OP_reg13 = 0x5d,
    DW_OP_reg14 = 0x5e,
    DW_OP_reg15 = 0x5f,
    DW_OP_reg16 = 0x60,
    DW_OP_reg17 = 0x61,
    DW_OP_reg18 = 0x62,
    DW_OP_reg19 = 0x63,
    DW_OP_reg20 = 0x64,
    DW_OP_reg21 = 0x65,
    DW_OP_reg22 = 0x66,
    DW_OP_reg23 = 0x67,
    DW_OP_reg24 = 0x68,
    DW_OP_reg25 = 0x69,
    DW_OP_reg26 = 0x6a,
    DW_OP_reg27 = 0x6b,
    DW_OP_reg28 = 0x6c,
    DW_OP_reg29 = 0x6d,
    DW_OP_reg30 = 0x6e,
    DW_OP_reg31 = 0x6f,
    DW_OP_breg0 = 0x70,
    DW_OP_breg1 = 0x71,
    DW_OP_breg2 = 0x72,
    DW_OP_breg3 = 0x73,
    DW_OP_breg4 = 0x74,
    DW_OP_breg5 = 0x75,
    DW_OP_breg6 = 0x76,
    DW_OP_breg7 = 0x77,
    DW_OP_breg8 = 0x78,
    DW_OP_breg9 = 0x79,
    DW_OP_breg10 = 0x7a,
    DW_OP_breg11 = 0x7b,
    DW_OP_breg12 = 0x7c,
    DW_OP_breg13 = 0x7d,
    DW_OP_breg14 = 0x7e,
    DW_OP_breg15 = 0x7f,
    DW_OP_breg16 = 0x80,
    DW_OP_breg17 = 0x81,
    DW_OP_breg18 = 0x82,
    DW_OP_breg19 = 0x83,
    DW_OP_breg20 = 0x84,
    DW_OP_breg21 = 0x85,
    DW_OP_breg22 = 0x86,
    DW_OP_breg23 = 0x87,
    DW_OP_breg24 = 0x88,
    DW_OP_breg25 = 0x89,
    DW_OP_breg26 = 0x8a,
    DW_OP_breg27 = 0x8b,
    DW_OP_breg28 = 0x8c,
    DW_OP_breg29 = 0x8d,
    DW_OP_breg30 = 0x8e,
    DW_OP_breg31 = 0x8f,
    DW_OP_regx = 0x90,
    DW_OP_fbreg = 0x91,
    DW_OP_bregx = 0x92,
    DW_OP_piece = 0x93,
    DW_OP_deref_size = 0x94,
    DW_OP_xderef_size = 0x95,
    DW_OP_nop = 0x96
  };

#define DW_OP_lo_user	0x80	/* implementation-defined range start */
#define DW_OP_hi_user	0xff	/* implementation-defined range end */

/* Type encodings.  */

enum dwarf_type
  {
    DW_ATE_void = 0x0,
    DW_ATE_address = 0x1,
    DW_ATE_boolean = 0x2,
    DW_ATE_complex_float = 0x3,
    DW_ATE_float = 0x4,
    DW_ATE_signed = 0x5,
    DW_ATE_signed_char = 0x6,
    DW_ATE_unsigned = 0x7,
    DW_ATE_unsigned_char = 0x8
  };

#define	DW_ATE_lo_user 0x80
#define	DW_ATE_hi_user 0xff

/* Array ordering names and codes.  */
enum dwarf_array_dim_ordering
  {
    DW_ORD_row_major = 0,
    DW_ORD_col_major = 1
  };

/* access attribute */
enum dwarf_access_attribute
  {
    DW_ACCESS_public = 1,
    DW_ACCESS_protected = 2,
    DW_ACCESS_private = 3
  };

/* visibility */
enum dwarf_visibility_attribute
  {
    DW_VIS_local = 1,
    DW_VIS_exported = 2,
    DW_VIS_qualified = 3
  };

/* virtuality */
enum dwarf_virtuality_attribute
  {
    DW_VIRTUALITY_none = 0,
    DW_VIRTUALITY_virtual = 1,
    DW_VIRTUALITY_pure_virtual = 2
  };

/* case sensitivity */
enum dwarf_id_case
  {
    DW_ID_case_sensitive = 0,
    DW_ID_up_case = 1,
    DW_ID_down_case = 2,
    DW_ID_case_insensitive = 3
  };

/* calling convention */
enum dwarf_calling_convention
  {
    DW_CC_normal = 0x1,
    DW_CC_program = 0x2,
    DW_CC_nocall = 0x3
  };

#define DW_CC_lo_user 0x40
#define DW_CC_hi_user 0xff

/* inline attribute */
enum dwarf_inline_attribute
  {
    DW_INL_not_inlined = 0,
    DW_INL_inlined = 1,
    DW_INL_declared_not_inlined = 2,
    DW_INL_declared_inlined = 3
  };

/* discriminant lists */
enum dwarf_discrim_list
  {
    DW_DSC_label = 0,
    DW_DSC_range = 1
  };

/* line number opcodes */
enum dwarf_line_number_ops
  {
    DW_LNS_extended_op = 0,
    DW_LNS_copy = 1,
    DW_LNS_advance_pc = 2,
    DW_LNS_advance_line = 3,
    DW_LNS_set_file = 4,
    DW_LNS_set_column = 5,
    DW_LNS_negate_stmt = 6,
    DW_LNS_set_basic_block = 7,
    DW_LNS_const_add_pc = 8,
    DW_LNS_fixed_advance_pc = 9
  };

/* line number extended opcodes */
enum dwarf_line_number_x_ops
  {
    DW_LNE_end_sequence = 1,
    DW_LNE_set_address = 2,
    DW_LNE_define_file = 3
  };

/* call frame information */
enum dwarf_call_frame_info
  {
    DW_CFA_advance_loc = 0x40,
    DW_CFA_offset = 0x80,
    DW_CFA_restore = 0xc0,
    DW_CFA_nop = 0x00,
    DW_CFA_set_loc = 0x01,
    DW_CFA_advance_loc1 = 0x02,
    DW_CFA_advance_loc2 = 0x03,
    DW_CFA_advance_loc4 = 0x04,
    DW_CFA_offset_extended = 0x05,
    DW_CFA_restore_extended = 0x06,
    DW_CFA_undefined = 0x07,
    DW_CFA_same_value = 0x08,
    DW_CFA_register = 0x09,
    DW_CFA_remember_state = 0x0a,
    DW_CFA_restore_state = 0x0b,
    DW_CFA_def_cfa = 0x0c,
    DW_CFA_def_cfa_register = 0x0d,
    DW_CFA_def_cfa_offset = 0x0e,
    DW_CFA_def_cfa_expression = 0x0f,
    DW_CFA_expression = 0x10,
    /* Dwarf 2.1 */
    DW_CFA_offset_extended_sf = 0x11,
    DW_CFA_def_cfa_sf = 0x12,
    DW_CFA_def_cfa_offset_sf = 0x13,

    /* SGI/MIPS specific */
    DW_CFA_MIPS_advance_loc8 = 0x1d,

    /* GNU extensions */
    DW_CFA_GNU_window_save = 0x2d,
    DW_CFA_GNU_args_size = 0x2e,
    DW_CFA_GNU_negative_offset_extended = 0x2f
  };

#define DW_CIE_ID	  0xffffffff
#define DW_CIE_VERSION	  1

#define DW_CFA_extended   0
#define DW_CFA_low_user   0x1c
#define DW_CFA_high_user  0x3f

#define DW_CHILDREN_no		     0x00
#define DW_CHILDREN_yes		     0x01

#define DW_ADDR_none		0

/* Source language names and codes.  */

enum dwarf_source_language
  {
    DW_LANG_C89 = 0x0001,
    DW_LANG_C = 0x0002,
    DW_LANG_Ada83 = 0x0003,
    DW_LANG_C_plus_plus = 0x0004,
    DW_LANG_Cobol74 = 0x0005,
    DW_LANG_Cobol85 = 0x0006,
    DW_LANG_Fortran77 = 0x0007,
    DW_LANG_Fortran90 = 0x0008,
    DW_LANG_Pascal83 = 0x0009,
    DW_LANG_Modula2 = 0x000a,
    DW_LANG_Java = 0x000b,
    DW_LANG_Mips_Assembler = 0x8001
  };


#define DW_LANG_lo_user 0x8000	/* implementation-defined range start */
#define DW_LANG_hi_user 0xffff	/* implementation-defined range start */

/* Names and codes for macro information.  */

enum dwarf_macinfo_record_type
  {
    DW_MACINFO_define = 1,
    DW_MACINFO_undef = 2,
    DW_MACINFO_start_file = 3,
    DW_MACINFO_end_file = 4,
    DW_MACINFO_vendor_ext = 255
  };

#endif /* !ASSEMBLER */


/* @@@ For use with GNU frame unwind information.  */

#define DW_EH_PE_absptr		0x00
#define DW_EH_PE_omit		0xff

#define DW_EH_PE_uleb128	0x01
#define DW_EH_PE_udata2		0x02
#define DW_EH_PE_udata4		0x03
#define DW_EH_PE_udata8		0x04
#define DW_EH_PE_sleb128	0x09
#define DW_EH_PE_sdata2		0x0A
#define DW_EH_PE_sdata4		0x0B
#define DW_EH_PE_sdata8		0x0C
#define DW_EH_PE_signed		0x08

#define DW_EH_PE_pcrel		0x10
#define DW_EH_PE_textrel	0x20
#define DW_EH_PE_datarel	0x30
#define DW_EH_PE_funcrel	0x40
#define DW_EH_PE_aligned	0x50

#define DW_EH_PE_indirect	0x80

#endif /* dwarf2.h */

sysdep-generic.h

/* Generic asm macros used on many machines.
   Copyright (C) 1991-2023 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifndef C_LABEL

/* Define a macro we can use to construct the asm name for a C symbol.  */
# define C_LABEL(name)	name##:

#endif

#ifdef __ASSEMBLER__
/* Mark the end of function named SYM.  This is used on some platforms
   to generate correct debugging information.  */
# ifndef END
#  define END(sym)
# endif

# ifndef JUMPTARGET
#  define JUMPTARGET(sym)	sym
# endif
#endif

/* Macros to generate eh_frame unwind information.  */
#ifdef __ASSEMBLER__
# define cfi_startproc			.cfi_startproc
# define cfi_endproc			.cfi_endproc
# define cfi_def_cfa(reg, off)		.cfi_def_cfa reg, off
# define cfi_def_cfa_register(reg)	.cfi_def_cfa_register reg
# define cfi_def_cfa_offset(off)	.cfi_def_cfa_offset off
# define cfi_adjust_cfa_offset(off)	.cfi_adjust_cfa_offset off
# define cfi_offset(reg, off)		.cfi_offset reg, off
# define cfi_rel_offset(reg, off)	.cfi_rel_offset reg, off
# define cfi_register(r1, r2)		.cfi_register r1, r2
# define cfi_return_column(reg)	.cfi_return_column reg
# define cfi_restore(reg)		.cfi_restore reg
# define cfi_same_value(reg)		.cfi_same_value reg
# define cfi_undefined(reg)		.cfi_undefined reg
# define cfi_remember_state		.cfi_remember_state
# define cfi_restore_state		.cfi_restore_state
# define cfi_window_save		.cfi_window_save
# define cfi_personality(enc, exp)	.cfi_personality enc, exp
# define cfi_lsda(enc, exp)		.cfi_lsda enc, exp

#else /* ! ASSEMBLER */

# define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
# define CFI_STRINGIFY2(Name) #Name
# define CFI_STARTPROC	".cfi_startproc"
# define CFI_ENDPROC	".cfi_endproc"
# define CFI_DEF_CFA(reg, off)	\
   ".cfi_def_cfa " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
# define CFI_DEF_CFA_REGISTER(reg) \
   ".cfi_def_cfa_register " CFI_STRINGIFY(reg)
# define CFI_DEF_CFA_OFFSET(off) \
   ".cfi_def_cfa_offset " CFI_STRINGIFY(off)
# define CFI_ADJUST_CFA_OFFSET(off) \
   ".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
# define CFI_OFFSET(reg, off) \
   ".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
# define CFI_REL_OFFSET(reg, off) \
   ".cfi_rel_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
# define CFI_REGISTER(r1, r2) \
   ".cfi_register " CFI_STRINGIFY(r1) "," CFI_STRINGIFY(r2)
# define CFI_RETURN_COLUMN(reg) \
   ".cfi_return_column " CFI_STRINGIFY(reg)
# define CFI_RESTORE(reg) \
   ".cfi_restore " CFI_STRINGIFY(reg)
# define CFI_UNDEFINED(reg) \
   ".cfi_undefined " CFI_STRINGIFY(reg)
# define CFI_REMEMBER_STATE \
   ".cfi_remember_state"
# define CFI_RESTORE_STATE \
   ".cfi_restore_state"
# define CFI_WINDOW_SAVE \
   ".cfi_window_save"
# define CFI_PERSONALITY(enc, exp) \
   ".cfi_personality " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
# define CFI_LSDA(enc, exp) \
   ".cfi_lsda " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
#endif

#include "dwarf2.h"

sysdep.h

/* Copyright (C) 1997-2023 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public License as
   published by the Free Software Foundation; either version 2.1 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifndef _AARCH64_SYSDEP_H
#define _AARCH64_SYSDEP_H

#include "sysdep-generic.h"

#ifdef __LP64__
# define AARCH64_R(NAME)	R_AARCH64_ ## NAME
# define PTR_REG(n)		x##n
# define PTR_LOG_SIZE		3
# define PTR_ARG(n)
# define SIZE_ARG(n)
#else
# define AARCH64_R(NAME)	R_AARCH64_P32_ ## NAME
# define PTR_REG(n)		w##n
# define PTR_LOG_SIZE		2
# define PTR_ARG(n)		mov     w##n, w##n
# define SIZE_ARG(n)		mov     w##n, w##n
#endif

#define PTR_SIZE	(1<<PTR_LOG_SIZE)

#ifndef __ASSEMBLER__
/* Strip pointer authentication code from pointer p.  */
static inline void *
strip_pac (void *p)
{
  register void *ra asm ("x30") = (p);
  asm ("hint 7 // xpaclri" : "+r"(ra));
  return ra;
}

/* This is needed when glibc is built with -mbranch-protection=pac-ret
   with a gcc that is affected by PR target/94891.  */
# if HAVE_AARCH64_PAC_RET
#  undef RETURN_ADDRESS
#  define RETURN_ADDRESS(n) strip_pac (__builtin_return_address (n))
# endif
#endif

#ifdef	__ASSEMBLER__

/* Syntactic details of assembler.  */

#define ASM_SIZE_DIRECTIVE(name) .size name,.-name

/* Branch Target Identitication support.  */
#if HAVE_AARCH64_BTI
# define BTI_C		hint	34
# define BTI_J		hint	36
#else
# define BTI_C		nop
# define BTI_J		nop
#endif

/* Return address signing support (pac-ret).  */
#define PACIASP		hint	25
#define AUTIASP		hint	29

/* GNU_PROPERTY_AARCH64_* macros from elf.h for use in asm code.  */
#define FEATURE_1_AND 0xc0000000
#define FEATURE_1_BTI 1
#define FEATURE_1_PAC 2

/* Add a NT_GNU_PROPERTY_TYPE_0 note.  */
#define GNU_PROPERTY(type, value)	\
  .section .note.gnu.property, "a";	\
  .p2align 3;				\
  .word 4;				\
  .word 16;				\
  .word 5;				\
  .asciz "GNU";				\
  .word type;				\
  .word 4;				\
  .word value;				\
  .word 0;				\
  .text

/* Add GNU property note with the supported features to all asm code
   where sysdep.h is included.  */
#if HAVE_AARCH64_BTI && HAVE_AARCH64_PAC_RET
GNU_PROPERTY (FEATURE_1_AND, FEATURE_1_BTI|FEATURE_1_PAC)
#elif HAVE_AARCH64_BTI
GNU_PROPERTY (FEATURE_1_AND, FEATURE_1_BTI)
#endif

/* Define an entry point visible from C.  */
#define ENTRY(name)						\
  .globl C_SYMBOL_NAME(name);					\
  .type C_SYMBOL_NAME(name),%function;				\
  .p2align 6;							\
  C_LABEL(name)							\
  cfi_startproc;						\
  BTI_C;							\
  CALL_MCOUNT

/* Define an entry point visible from C.  */
#define ENTRY_ALIGN(name, align)				\
  .globl C_SYMBOL_NAME(name);					\
  .type C_SYMBOL_NAME(name),%function;				\
  .p2align align;						\
  C_LABEL(name)							\
  cfi_startproc;						\
  BTI_C;							\
  CALL_MCOUNT

/* Define an entry point visible from C with a specified alignment and
   pre-padding with NOPs.  This can be used to ensure that a critical
   loop within a function is cache line aligned.  Note this version
   does not adjust the padding if CALL_MCOUNT is defined. */

#define ENTRY_ALIGN_AND_PAD(name, align, padding)		\
  .globl C_SYMBOL_NAME(name);					\
  .type C_SYMBOL_NAME(name),%function;				\
  .p2align align;						\
  .rep padding - 1; /* -1 for bti c.  */			\
  nop;								\
  .endr;							\
  C_LABEL(name)							\
  cfi_startproc;						\
  BTI_C;							\
  CALL_MCOUNT

#undef	END
#define END(name)						\
  cfi_endproc;							\
  ASM_SIZE_DIRECTIVE(name)

/* If compiled for profiling, call `mcount' at the start of each function.  */
#ifdef	PROF
# define CALL_MCOUNT						\
	str	x30, [sp, #-80]!;				\
	cfi_adjust_cfa_offset (80);				\
	cfi_rel_offset (x30, 0);				\
	stp	x0, x1, [sp, #16];				\
	cfi_rel_offset (x0, 16);				\
	cfi_rel_offset (x1, 24);				\
	stp	x2, x3, [sp, #32];				\
	cfi_rel_offset (x2, 32);				\
	cfi_rel_offset (x3, 40);				\
	stp	x4, x5, [sp, #48];				\
	cfi_rel_offset (x4, 48);				\
	cfi_rel_offset (x5, 56);				\
	stp	x6, x7, [sp, #64];				\
	cfi_rel_offset (x6, 64);				\
	cfi_rel_offset (x7, 72);				\
	mov	x0, x30;					\
	bl	mcount;						\
	ldp	x0, x1, [sp, #16];				\
	cfi_restore (x0);					\
	cfi_restore (x1);					\
	ldp	x2, x3, [sp, #32];				\
	cfi_restore (x2);					\
	cfi_restore (x3);					\
	ldp	x4, x5, [sp, #48];				\
	cfi_restore (x4);					\
	cfi_restore (x5);					\
	ldp	x6, x7, [sp, #64];				\
	cfi_restore (x6);					\
	cfi_restore (x7);					\
	ldr	x30, [sp], #80;					\
	cfi_adjust_cfa_offset (-80);				\
	cfi_restore (x30);
#else
# define CALL_MCOUNT		/* Do nothing.  */
#endif

/* Local label name for asm code.  */
#ifndef L
# define L(name)         .L##name
#endif

/* Load or store to/from a pc-relative EXPR into/from R, using T.
   Note R and T are register numbers and not register names.  */
#define LDST_PCREL(OP, R, T, EXPR)			\
	adrp	x##T, EXPR;				\
	OP	PTR_REG (R), [x##T, #:lo12:EXPR];	\

/* Load or store to/from a got-relative EXPR into/from R, using T.
   Note R and T are register numbers and not register names.  */
#define LDST_GLOBAL(OP, R, T,  EXPR)			\
	adrp	x##T, :got:EXPR;			\
	ldr	PTR_REG (T), [x##T, #:got_lo12:EXPR];	\
	OP	PTR_REG (R), [x##T];

/* Load an immediate into R.
   Note R is a register number and not a register name.  */
#ifdef __LP64__
# define MOVL(R, NAME)					\
	movz	PTR_REG (R), #:abs_g3:NAME;		\
	movk	PTR_REG (R), #:abs_g2_nc:NAME;		\
	movk	PTR_REG (R), #:abs_g1_nc:NAME;		\
	movk	PTR_REG (R), #:abs_g0_nc:NAME;
#else
# define MOVL(R, NAME)					\
	movz	PTR_REG (R), #:abs_g1:NAME;		\
	movk	PTR_REG (R), #:abs_g0_nc:NAME;
#endif

/* Since C identifiers are not normally prefixed with an underscore
   on this system, the asm identifier `syscall_error' intrudes on the
   C name space.  Make sure we use an innocuous name.  */
#define syscall_error	__syscall_error
#define mcount		_mcount

#endif	/* __ASSEMBLER__ */

#endif  /* _AARCH64_SYSDEP_H */

memcpy_sve.S

#define _GNU_SOURCE

#include "sysdep.h"

#define dstin   x0
#define src     x1
#define count   x2
#define dst     x3
#define srcend  x4
#define dstend  x5
#define tmp1    x6
#define vlen    x6

#define A_q     q0
#define B_q     q1
#define C_q     q2
#define D_q     q3
#define E_q     q4
#define F_q     q5
#define G_q     q6
#define H_q     q7

#ifndef C_SYMBOL_NAME
# define C_SYMBOL_NAME(name) name
#endif

/* Define an entry point visible from C.  */
#define ENTRY(name)                                             \
  .globl C_SYMBOL_NAME(name);                                   \
  .type C_SYMBOL_NAME(name),%function;                          \
  .p2align 6;                                                   \
  C_LABEL(name)                                                 \
  cfi_startproc;                                                \
  BTI_C;                                                        \
  CALL_MCOUNT

#undef  END
#define END(name)                                               \
  cfi_endproc;                                                  \
  ASM_SIZE_DIRECTIVE(name)


        .arch armv8.2-a+sve

ENTRY (memcpy)
	PTR_ARG (0)
	PTR_ARG (1)
	SIZE_ARG (2)

	cmp	count, 128
	b.hi	L(copy_long)
	cntb	vlen
	cmp	count, vlen, lsl 1
	b.hi	L(copy32_128)
	whilelo p0.b, xzr, count
	whilelo p1.b, vlen, count
	ld1b	z0.b, p0/z, [src, 0, mul vl]
	ld1b	z1.b, p1/z, [src, 1, mul vl]
	st1b	z0.b, p0, [dstin, 0, mul vl]
	st1b	z1.b, p1, [dstin, 1, mul vl]
	ret

        /* Medium copies: 33..128 bytes.  */
L(copy32_128):
	add	srcend, src, count
	add	dstend, dstin, count
	ldp	A_q, B_q, [src]
	ldp	C_q, D_q, [srcend, -32]
	cmp	count, 64
	b.hi	L(copy128)
	stp	A_q, B_q, [dstin]
	stp	C_q, D_q, [dstend, -32]
	ret

        /* Copy 65..128 bytes.  */
L(copy128):
        ldp     E_q, F_q, [src, 32]
        cmp     count, 96
        b.ls    L(copy96)
        ldp     G_q, H_q, [srcend, -64]
        stp     G_q, H_q, [dstend, -64]
L(copy96):
        stp     A_q, B_q, [dstin]
        stp     E_q, F_q, [dstin, 32]
        stp     C_q, D_q, [dstend, -32]
        ret

	.p2align 4
        /* Copy more than 128 bytes.  */
L(copy_long):
	add     srcend, src, count
	add     dstend, dstin, count
	
	/* Copy 32 bytes and then align src to 32-byte alignment.  */
	ldp     G_q, H_q, [src]
	and     tmp1, src, 31
	bic     src, src, 31
	sub     dst, dstin, tmp1
	add     count, count, tmp1      /* Count is now 32 too large.  */
	ldp	A_q, B_q, [src, 32]	
	stp     G_q, H_q, [dstin]
	ldp     C_q, D_q, [src, 64]
	subs    count, count, 128 + 32  /* Test and readjust count.  */
	b.ls    L(copy64_from_end)
L(loop64):
	stp     A_q, B_q, [dst, 32]
	ldp     A_q, B_q, [src, 96]
	stp     C_q, D_q, [dst, 64]
	ldp     C_q, D_q, [src, 128]
	add     src, src, 64
	add     dst, dst, 64
	subs    count, count, 64
	b.hi    L(loop64)

 /* Write the last iteration and copy 64 bytes from the end.  */
L(copy64_from_end):
	ldp     E_q, F_q, [srcend, -64]
	stp     A_q, B_q, [dst, 32]
	ldp     A_q, B_q, [srcend, -32]
	stp     C_q, D_q, [dst, 64]
	stp     E_q, F_q, [dstend, -64]
	stp     A_q, B_q, [dstend, -32]
	ret

END (memcpy)


ENTRY (memmove2)
	PTR_ARG (0)
	PTR_ARG (1)
	SIZE_ARG (2)

	cmp	count, 128
	b.hi	L(move_long)
	cntb	vlen
	cmp	count, vlen, lsl 1
	b.hi	L(copy32_128)
	whilelo p0.b, xzr, count
	whilelo p1.b, vlen, count
	ld1b	z0.b, p0/z, [src, 0, mul vl]
	ld1b	z1.b, p1/z, [src, 1, mul vl]
	st1b	z0.b, p0, [dstin, 0, mul vl]
	st1b	z1.b, p1, [dstin, 1, mul vl]
	ret

	.p2align 4
L(move_long):
	add     srcend, src, count
	add     dstend, dstin, count
	/* Only use backward copy if there is an overlap.  */
	sub     tmp1, dstin, src
	cbz     tmp1, L(return)
	cmp     tmp1, count
	b.hs    L(copy_long)

	/* Large backwards copy for overlapping copies.
	   Copy 16 bytes and then align srcend to 16-byte alignment.  */
	ldp     G_q, H_q, [srcend, -32]
	and     tmp1, srcend, 31
	bic     srcend, srcend, 31
	sub     count, count, tmp1
	ldp     A_q, B_q, [srcend, -32]
	stp     G_q, H_q, [dstend, -32]
	ldp     C_q, D_q, [srcend, -64]
	sub     dstend, dstend, tmp1
	subs    count, count, 128
	b.ls    L(copy64_from_start)

L(loop64_backwards):
	stp	A_q, B_q, [dstend, -32]
        ldp     A_q, B_q, [srcend, -96]
        stp	C_q, D_q, [dstend, -64]!
        ldp     C_q, D_q, [srcend, -128]
        sub     srcend, srcend, 64
        subs    count, count, 64
        b.hi    L(loop64_backwards)

        /* Write the last iteration and copy 64 bytes from the start.  */
L(copy64_from_start):
        ldp     E_q, F_q, [src, 32]
        stp     A_q, B_q, [dstend, -32]
        ldp     A_q, B_q, [src]
        stp     C_q, D_q, [dstend, -64]
        stp     E_q, F_q, [dstin, 32]
        stp     A_q, B_q, [dstin]
L(return):
        ret

END (memmove2)

/* memcmp - compare memory

   Copyright (C) 2013-2023 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library.  If not, see
   <https://www.gnu.org/licenses/>.  */

#include "sysdep.h"

/* Assumptions:
 *
 * ARMv8-a, AArch64, Advanced SIMD, unaligned accesses.
 */

#define src1	x0
#define src2	x1
#define limit	x2
#define result	w0

#define data1	x3
#define data1w	w3
#define data2	x4
#define data2w	w4
#define data3	x5
#define data3w	w5
#define data4	x6
#define data4w	w6
#define tmp	x6
#define src1end	x7
#define src2end	x8

#ifndef C_SYMBOL_NAME
# define C_SYMBOL_NAME(name) name
#endif

/* Define an entry point visible from C.  */
#define ENTRY(name)                                             \
  .globl C_SYMBOL_NAME(name);                                   \
  .type C_SYMBOL_NAME(name),%function;                          \
  .p2align 6;                                                   \
  C_LABEL(name)                                                 \
  cfi_startproc;                                                \
  BTI_C;                                                        \
  CALL_MCOUNT

#undef  END
#define END(name)                                               \
  cfi_endproc;                                                  \
  ASM_SIZE_DIRECTIVE(name)


ENTRY (memcmp)
	PTR_ARG (0)
	PTR_ARG (1)
	SIZE_ARG (2)

	cmp	limit, #128
	b.hs	__memcmp_aarch64_sve
	cmp	limit, 16
	b.lo	L(less16)
	ldp	data1, data3, [src1]
	ldp	data2, data4, [src2]
	ccmp	data1, data2, 0, ne
	ccmp	data3, data4, 0, eq
	b.ne	L(return2)

	add	src1end, src1, limit
	add	src2end, src2, limit
	cmp	limit, 32
	b.ls	L(last_bytes)
	cmp	limit, 160
	b.hs	L(loop_align)
	sub	limit, limit, 32

	.p2align 4
L(loop32):
	ldp	data1, data3, [src1, 16]
	ldp	data2, data4, [src2, 16]
	cmp	data1, data2
	ccmp	data3, data4, 0, eq
	b.ne	L(return2)
	cmp	limit, 16
	b.ls	L(last_bytes)

	ldp	data1, data3, [src1, 32]
	ldp	data2, data4, [src2, 32]
	cmp	data1, data2
	ccmp	data3, data4, 0, eq
	b.ne	L(return2)
	add	src1, src1, 32
	add	src2, src2, 32
L(last64):
	subs	limit, limit, 32
	b.hi	L(loop32)

	/* Compare last 1-16 bytes using unaligned access.  */
L(last_bytes):
	ldp	data1, data3, [src1end, -16]
	ldp	data2, data4, [src2end, -16]
L(return2):
	cmp	data1, data2
	csel	data1, data1, data3, ne
	csel	data2, data2, data4, ne

	/* Compare data bytes and set return value to 0, -1 or 1.  */
L(return):
#ifndef __AARCH64EB__
	rev	data1, data1
	rev	data2, data2
#endif
	cmp	data1, data2
	cset	result, ne
	cneg	result, result, lo
	ret

	.p2align 4
L(less16):
	add	src1end, src1, limit
	add	src2end, src2, limit
	tbz	limit, 3, L(less8)
	ldr	data1, [src1]
	ldr	data2, [src2]
	ldr	data3, [src1end, -8]
	ldr	data4, [src2end, -8]
	b	L(return2)

	.p2align 4
L(less8):
	tbz	limit, 2, L(less4)
	ldr	data1w, [src1]
	ldr	data2w, [src2]
	ldr	data3w, [src1end, -4]
	ldr	data4w, [src2end, -4]
	b	L(return2)

L(less4):
	tbz	limit, 1, L(less2)
	ldrh	data1w, [src1]
	ldrh	data2w, [src2]
	cmp	data1w, data2w
	b.ne	L(return)
L(less2):
	mov	result, 0
	tbz	limit, 0, L(return_zero)
	ldrb	data1w, [src1end, -1]
	ldrb	data2w, [src2end, -1]
	sub	result, data1w, data2w
L(return_zero):
	ret

L(loop_align):
	ldp	data1, data3, [src1, 16]
	ldp	data2, data4, [src2, 16]
	cmp	data1, data2
	ccmp	data3, data4, 0, eq
	b.ne	L(return2)

	/* Align src2 and adjust src1, src2 and limit.  */
	and	tmp, src2, 15
	sub	tmp, tmp, 16
	sub	src2, src2, tmp
	add	limit, limit, tmp
	sub	src1, src1, tmp
	sub	limit, limit, 64 + 16

	.p2align 4
L(loop64):
	ldr	q0, [src1, 16]
	ldr	q1, [src2, 16]
	subs	limit, limit, 64
	ldr	q2, [src1, 32]
	ldr	q3, [src2, 32]
	eor	v0.16b, v0.16b, v1.16b
	eor	v1.16b, v2.16b, v3.16b
	ldr	q2, [src1, 48]
	ldr	q3, [src2, 48]
	umaxp	v0.16b, v0.16b, v1.16b
	ldr	q4, [src1, 64]!
	ldr	q5, [src2, 64]!
	eor	v1.16b, v2.16b, v3.16b
	eor	v2.16b, v4.16b, v5.16b
	umaxp	v1.16b, v1.16b, v2.16b
	umaxp	v0.16b, v0.16b, v1.16b
	umaxp	v0.16b, v0.16b, v0.16b
	fmov	tmp, d0
	ccmp	tmp, 0, 0, hi
	b.eq	L(loop64)

	/* If equal, process last 1-64 bytes using scalar loop.  */
	add	limit, limit, 64 + 16
	cbz	tmp, L(last64)

	/* Determine the 8-byte aligned offset of the first difference.  */
#ifdef __AARCH64EB__
	rev16	tmp, tmp
#endif
	rev	tmp, tmp
	clz	tmp, tmp
	bic	tmp, tmp, 7
	sub	tmp, tmp, 48
	ldr	data1, [src1, tmp]
	ldr	data2, [src2, tmp]
#ifndef __AARCH64EB__
	rev	data1, data1
	rev	data2, data2
#endif
	mov	result, 1
	cmp	data1, data2
	cneg	result, result, lo
	ret

/*  ***************  SVE implementation  ***************  */
	.arch	armv8.2-a+sve
	.text
	.type	__memcmp_aarch64_sve, %function
	.p2align 4
__memcmp_aarch64_sve:
	mov	x3, 0			// off = 0
0:	whilelo	p0.b, x3, x2		// p0 = (off < limit)
	b.none	9f

	ld1b	z0.b, p0/z, [x0, x3]
	ld1b	z1.b, p0/z, [x1, x3]
	incb	x3			// off += svcntb()

	cmpne	p1.b, p0/z, z0.b, z1.b
	b.none	0b

	// found mismatch
	brkb	p1.b, p0/z, p1.b
	lasta	w0, p1, z0.b
	lasta	w1, p1, z1.b
	sub	x0, x0, x1
	ret
9:	mov	x0, 0
	ret
	.size	__memcmp_aarch64_sve, . - __memcmp_aarch64_sve

END (memcmp)

Makefile

CC=gcc
CFLAGS= -Wall -O3 -fPIC -shared
LDFLAGS=-ldl

.PHONY=all clean

all: memcpy_sve.so

memcpy_sve.so: memcpy_sve.S memcmp.S
        $(CC) $(CFLAGS) $^ -o $@ $(LDFLAGS)

clean:
        rm -f memcpy_sve.so