X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fdwarf.h;h=f4ee0ece3f72d8b6c3ce85c5c766a78732d7025c;hp=b9803e830f5b7e9787ac520a7e0175184bd7d4bb;hb=0fffdebc73c679bf161c7205b8b2087347432150;hpb=0c78394cee9cd96314202124bff659105ad3aad9 diff --git a/gcc/dwarf.h b/gcc/dwarf.h index b9803e830f5..f4ee0ece3f7 100644 --- a/gcc/dwarf.h +++ b/gcc/dwarf.h @@ -1,254 +1,319 @@ -/* Dwarf definitions. +/* Declarations and definitions of codes relating to the DWARF symbolic + debugging information format. - This file is derived from the DWARF specification, Draft #5 by the UNIX - International Programming Languages Special Interest Group dated 10/21/91. -*/ + Written by Ron Guilmette (rfg@netcom.com) -/* Tag names and codes: Figure 9. */ - -#define TAG_padding 0x0000 -#define TAG_array_type 0x0001 -#define TAG_class_type 0x0002 -#define TAG_entry_point 0x0003 -#define TAG_enumeration_type 0x0004 -#define TAG_formal_parameter 0x0005 -#define TAG_global_subroutine 0x0006 -#define TAG_global_variable 0x0007 -#define TAG_imported_declaration 0x0008 - -#define TAG_label 0x000a -#define TAG_lexical_block 0x000b -#define TAG_local_variable 0x000c -#define TAG_member 0x000d - -#define TAG_pointer_type 0x000f -#define TAG_reference_type 0x0010 -#define TAG_compile_unit 0x0011 -#define TAG_source_file 0x0011 -#define TAG_string_type 0x0012 -#define TAG_structure_type 0x0013 -#define TAG_subroutine 0x0014 -#define TAG_subroutine_type 0x0015 -#define TAG_typedef 0x0016 -#define TAG_union_type 0x0017 -#define TAG_unspecified_parameters 0x0018 -#define TAG_variant 0x0019 -#define TAG_common_block 0x001a -#define TAG_common_inclusion 0x001b -#define TAG_format 0x001c -#define TAG_inheritance 0x001d -#define TAG_inlined_subroutine 0x001e -#define TAG_module 0x001f -#define TAG_ptr_to_member_type 0x0020 -#define TAG_set_type 0x0021 -#define TAG_subrange_type 0x0022 -#define TAG_with_stmt 0x0023 - -#define TAG_lo_user 0x8000 -#define TAG_hi_user 0xffff - -/* Form names and codes: Figure 10. */ - -#define FORM_ADDR 0x1 -#define FORM_REF 0x2 -#define FORM_BLOCK2 0x3 -#define FORM_BLOCK4 0x4 -#define FORM_DATA2 0x5 -#define FORM_DATA4 0x6 -#define FORM_DATA8 0x7 -#define FORM_STRING 0x8 - -/* Attribute names and codes: Figure 11. */ - -#define AT_sibling /* reference */ (0x0010|FORM_REF) -#define AT_location /* block2 */ (0x0020|FORM_BLOCK2) -#define AT_name /* string */ (0x0030|FORM_STRING) -#define AT_fund_type /* halfword */ (0x0050|FORM_DATA2) -#define AT_mod_fund_type /* block2 */ (0x0060|FORM_BLOCK2) -#define AT_user_def_type /* reference */ (0x0070|FORM_REF) -#define AT_mod_u_d_type /* block2 */ (0x0080|FORM_BLOCK2) -#define AT_ordering /* halfword */ (0x0090|FORM_DATA2) -#define AT_subscr_data /* block2 */ (0x00a0|FORM_BLOCK2) -#define AT_byte_size /* word */ (0x00b0|FORM_DATA4) -#define AT_bit_offset /* halfword */ (0x00c0|FORM_DATA2) -#define AT_bit_size /* word */ (0x00d0|FORM_DATA4) - -#define AT_element_list /* block4 */ (0x00f0|FORM_BLOCK4) -#define AT_stmt_list /* word */ (0x0100|FORM_DATA4) -#define AT_low_pc /* address */ (0x0110|FORM_ADDR) -#define AT_high_pc /* address */ (0x0120|FORM_ADDR) -#define AT_language /* word */ (0x0130|FORM_DATA4) -#define AT_member /* reference */ (0x0140|FORM_REF) -#define AT_discr /* reference */ (0x0150|FORM_REF) -#define AT_discr_value /* block2 */ (0x0160|FORM_BLOCK2) -#define AT_visibility /* halfword */ (0x0170|FORM_DATA2) -#define AT_import /* reference */ (0x0180|FORM_REF) -#define AT_string_length /* block2 */ (0x0190|FORM_BLOCK2) -#define AT_common_reference /* reference */ (0x01a0|FORM_REF) -#define AT_comp_dir /* string */ (0x01b0|FORM_STRING) - -#define AT_const_value_string /* string */ (0x01c0|FORM_STRING) -#define AT_const_value_data2 /* halfword */ (0x01c0|FORM_DATA2) -#define AT_const_value_data4 /* word */ (0x01c0|FORM_DATA4) -#define AT_const_value_data8 /* doubleword */(0x01c0|FORM_DATA8) -#define AT_const_value_block2 /* block2 */ (0x01c0|FORM_BLOCK2) -#define AT_const_value_block4 /* block4 */ (0x01c0|FORM_BLOCK4) - -#define AT_containing_type /* reference */ (0x01d0|FORM_REF) - -#define AT_default_value_addr /* address */ (0x01e0|FORM_ADDR) -#define AT_default_value_data2 /* halfword */ (0x01e0|FORM_DATA2) -#define AT_default_value_data4 /* word */ (0x01e0|FORM_DATA4) -#define AT_default_value_data8 /* doubleword */(0x01e0|FORM_DATA8) -#define AT_default_value_string /* string */ (0x01e0|FORM_STRING) - -#define AT_friends /* block2 */ (0x01f0|FORM_BLOCK2) -#define AT_inline /* string */ (0x0200|FORM_STRING) -#define AT_is_optional /* string */ (0x0210|FORM_STRING) - -#define AT_lower_bound_ref /* reference */ (0x0220|FORM_REF) -#define AT_lower_bound_data2 /* halfword */ (0x0220|FORM_DATA2) -#define AT_lower_bound_data4 /* word */ (0x0220|FORM_DATA4) -#define AT_lower_bound_data8 /* doubleword */(0x0220|FORM_DATA8) - -#define AT_main_program /* string */ (0x0230|FORM_STRING) -#define AT_private /* string */ (0x0240|FORM_STRING) -#define AT_producer /* string */ (0x0250|FORM_STRING) -#define AT_protected /* string */ (0x0260|FORM_STRING) -#define AT_prototyped /* string */ (0x0270|FORM_STRING) -#define AT_public /* string */ (0x0280|FORM_STRING) -#define AT_pure_virtual /* string */ (0x0290|FORM_STRING) -#define AT_return_addr_loc /* block2 */ (0x02a0|FORM_BLOCK2) -#define AT_specification /* reference */ (0x02b0|FORM_REF) -#define AT_start_scope /* word */ (0x02c0|FORM_DATA4) -#define AT_static_link_loc /* block2 */ (0x02d0|FORM_BLOCK2) -#define AT_stride_size /* word */ (0x02e0|FORM_DATA4) - -#define AT_upper_bound_ref /* reference */ (0x02f0|FORM_REF) -#define AT_upper_bound_data2 /* halfword */ (0x02f0|FORM_DATA2) -#define AT_upper_bound_data4 /* word */ (0x02f0|FORM_DATA4) -#define AT_upper_bound_data8 /* doubleword */(0x02f0|FORM_DATA8) - -#define AT_virtual /* string */ (0x0300|FORM_STRING) -#define AT_frame_base /* block2 */ (0x0310|FORM_BLOCK2) - -/* GNU attribute extensions. */ - -#define AT_sf_names /* word */ (0x8000|FORM_DATA4) -#define AT_src_info /* word */ (0x8010|FORM_DATA4) -#define AT_mac_info /* word */ (0x8020|FORM_DATA4) - -#define AT_lo_user /* - */ 0x8000 -#define AT_hi_user /* - */ 0xffff - -/* Location atom names and codes: Figure 13. */ - -#define OP_REG 0x01 -#define OP_BASEREG 0x02 -#define OP_ADDR 0x03 -#define OP_CONST 0x04 -#define OP_DEREF2 0x05 -#define OP_DEREF4 0x06 -#define OP_ADD 0x07 - -#define OP_LO_USER 0x80 -#define OP_HI_USER 0xff - -/* Fundamental type names and codes: figure 14. */ - -#define FT_char 0x0001 -#define FT_signed_char 0x0002 -#define FT_unsigned_char 0x0003 -#define FT_short 0x0004 -#define FT_signed_short 0x0005 -#define FT_unsigned_short 0x0006 -#define FT_integer 0x0007 -#define FT_signed_integer 0x0008 -#define FT_unsigned_integer 0x0009 -#define FT_long 0x000a -#define FT_signed_long 0x000b -#define FT_unsigned_long 0x000c -#define FT_pointer 0x000d -#define FT_float 0x000e -#define FT_dbl_prec_float 0x000f -#define FT_ext_prec_float 0x0010 /* not accepted by "classic" svr4 SDB */ -#define FT_complex 0x0011 /* not accepted by "classic" svr4 SDB */ -#define FT_dbl_prec_complex 0x0012 /* not accepted by "classic" svr4 SDB */ - -#define FT_void 0x0014 -#define FT_boolean 0x0015 /* not accepted by "classic" svr4 SDB */ -#define FT_ext_prec_complex 0x0016 /* not accepted by "classic" svr4 SDB */ - -/* GNU-specific fundamental type codes - not accepted by "classic" svr4 SDB */ +Copyright (C) 1992, 2004 Free Software Foundation, Inc. -#define FT_long_long 0x8000 -#define FT_signed_long_long 0x8001 -#define FT_unsigned_long_long 0x8002 - -#define FT_lo_user 0x8000 -#define FT_hi_user 0xffff - -/* Type modifier names and codes: Figure 15. */ - -#define MOD_pointer_to 0x01 -#define MOD_reference_to 0x02 -#define MOD_const 0x03 -#define MOD_volatile 0x04 - -#define MOD_lo_user 0x80 -#define MOD_hi_user 0xff - -/* Visibility names and codes: Figure 16. */ - -#define VIS_local 0x00 -#define VIS_exported 0x01 - -#define VIS_lo_user 0x80 -#define VIS_hi_user 0xff - -/* Array ordering names and codes: Figure 18. */ - -#define ORD_row_major 0 -#define ORD_col_major 1 - -/* Array subscript format names and codes: Figure 19. */ - -#define FMT_FT_C_C 0x0 -#define FMT_FT_C_X 0x1 -#define FMT_FT_X_C 0x2 -#define FMT_FT_X_X 0x3 -#define FMT_UT_C_C 0x4 -#define FMT_UT_C_X 0x5 -#define FMT_UT_X_C 0x6 -#define FMT_UT_X_X 0x7 -#define FMT_ET 0x8 +This file is part of GCC. -/* Derived from above for ease of use. */ +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. -#define FMT_CODE(_FUNDAMENTAL_TYPE_P, _UB_CONST_P, _LB_CONST_P) \ - (((_FUNDAMENTAL_TYPE_P) ? 0 : 4) \ - | ((_UB_CONST_P) ? 0 : 2) \ - | ((_LB_CONST_P) ? 0 : 1)) +GCC 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 General Public License +for more details. -/* Source language names and codes: Figure 17. */ +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING. If not, write to the Free +Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301, USA. */ -#define LANG_C89 0x0001 -#define LANG_C 0x0002 -#define LANG_ADA83 0x0003 -#define LANG_C_PLUS_PLUS 0x0004 -#define LANG_COBOL74 0x0005 -#define LANG_COBOL85 0x0006 -#define LANG_FORTRAN77 0x0007 -#define LANG_FORTRAN90 0x0008 -#define LANG_PASCAL83 0x0009 -#define LANG_MODULA2 0x000a +/* This file is derived from the DWARF specification (a public document) + Revision 1.0.1 (April 8, 1992) 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. +*/ -#define LANG_LO_USER 0x8000 -#define LANG_HI_USER 0xffff +/* Tag names and codes. */ + +enum dwarf_tag { + TAG_padding = 0x0000, + TAG_array_type = 0x0001, + TAG_class_type = 0x0002, + TAG_entry_point = 0x0003, + TAG_enumeration_type = 0x0004, + TAG_formal_parameter = 0x0005, + TAG_global_subroutine = 0x0006, + TAG_global_variable = 0x0007, + /* 0x0008 -- reserved */ + /* 0x0009 -- reserved */ + TAG_label = 0x000a, + TAG_lexical_block = 0x000b, + TAG_local_variable = 0x000c, + TAG_member = 0x000d, + /* 0x000e -- reserved */ + TAG_pointer_type = 0x000f, + TAG_reference_type = 0x0010, + TAG_compile_unit = 0x0011, + TAG_string_type = 0x0012, + TAG_structure_type = 0x0013, + TAG_subroutine = 0x0014, + TAG_subroutine_type = 0x0015, + TAG_typedef = 0x0016, + TAG_union_type = 0x0017, + TAG_unspecified_parameters = 0x0018, + TAG_variant = 0x0019, + TAG_common_block = 0x001a, + TAG_common_inclusion = 0x001b, + TAG_inheritance = 0x001c, + TAG_inlined_subroutine = 0x001d, + TAG_module = 0x001e, + TAG_ptr_to_member_type = 0x001f, + TAG_set_type = 0x0020, + TAG_subrange_type = 0x0021, + TAG_with_stmt = 0x0022, + + /* GNU extensions */ + + TAG_format_label = 0x8000, /* for FORTRAN 77 and Fortran 90 */ + TAG_namelist = 0x8001, /* For Fortran 90 */ + TAG_function_template = 0x8002, /* for C++ */ + TAG_class_template = 0x8003 /* for C++ */ +}; + +#define TAG_lo_user 0x8000 /* implementation-defined range start */ +#define TAG_hi_user 0xffff /* implementation-defined range end */ +#define TAG_source_file TAG_compile_unit /* for backward compatibility */ + +/* Form names and codes. */ + +enum dwarf_form { + FORM_ADDR = 0x1, + FORM_REF = 0x2, + FORM_BLOCK2 = 0x3, + FORM_BLOCK4 = 0x4, + FORM_DATA2 = 0x5, + FORM_DATA4 = 0x6, + FORM_DATA8 = 0x7, + FORM_STRING = 0x8 +}; + +/* Attribute names and codes. */ + +enum dwarf_attribute { + AT_sibling = (0x0010|FORM_REF), + AT_location = (0x0020|FORM_BLOCK2), + AT_name = (0x0030|FORM_STRING), + AT_fund_type = (0x0050|FORM_DATA2), + AT_mod_fund_type = (0x0060|FORM_BLOCK2), + AT_user_def_type = (0x0070|FORM_REF), + AT_mod_u_d_type = (0x0080|FORM_BLOCK2), + AT_ordering = (0x0090|FORM_DATA2), + AT_subscr_data = (0x00a0|FORM_BLOCK2), + AT_byte_size = (0x00b0|FORM_DATA4), + AT_bit_offset = (0x00c0|FORM_DATA2), + AT_bit_size = (0x00d0|FORM_DATA4), + /* (0x00e0|FORM_xxxx) -- reserved */ + AT_element_list = (0x00f0|FORM_BLOCK4), + AT_stmt_list = (0x0100|FORM_DATA4), + AT_low_pc = (0x0110|FORM_ADDR), + AT_high_pc = (0x0120|FORM_ADDR), + AT_language = (0x0130|FORM_DATA4), + AT_member = (0x0140|FORM_REF), + AT_discr = (0x0150|FORM_REF), + AT_discr_value = (0x0160|FORM_BLOCK2), + /* (0x0170|FORM_xxxx) -- reserved */ + /* (0x0180|FORM_xxxx) -- reserved */ + AT_string_length = (0x0190|FORM_BLOCK2), + AT_common_reference = (0x01a0|FORM_REF), + AT_comp_dir = (0x01b0|FORM_STRING), + AT_const_value_string = (0x01c0|FORM_STRING), + AT_const_value_data2 = (0x01c0|FORM_DATA2), + AT_const_value_data4 = (0x01c0|FORM_DATA4), + AT_const_value_data8 = (0x01c0|FORM_DATA8), + AT_const_value_block2 = (0x01c0|FORM_BLOCK2), + AT_const_value_block4 = (0x01c0|FORM_BLOCK4), + AT_containing_type = (0x01d0|FORM_REF), + AT_default_value_addr = (0x01e0|FORM_ADDR), + AT_default_value_data2 = (0x01e0|FORM_DATA2), + AT_default_value_data4 = (0x01e0|FORM_DATA4), + AT_default_value_data8 = (0x01e0|FORM_DATA8), + AT_default_value_string = (0x01e0|FORM_STRING), + AT_friends = (0x01f0|FORM_BLOCK2), + AT_inline = (0x0200|FORM_STRING), + AT_is_optional = (0x0210|FORM_STRING), + AT_lower_bound_ref = (0x0220|FORM_REF), + AT_lower_bound_data2 = (0x0220|FORM_DATA2), + AT_lower_bound_data4 = (0x0220|FORM_DATA4), + AT_lower_bound_data8 = (0x0220|FORM_DATA8), + AT_private = (0x0240|FORM_STRING), + AT_producer = (0x0250|FORM_STRING), + AT_program = (0x0230|FORM_STRING), + AT_protected = (0x0260|FORM_STRING), + AT_prototyped = (0x0270|FORM_STRING), + AT_public = (0x0280|FORM_STRING), + AT_pure_virtual = (0x0290|FORM_STRING), + AT_return_addr = (0x02a0|FORM_BLOCK2), + AT_abstract_origin = (0x02b0|FORM_REF), + AT_start_scope = (0x02c0|FORM_DATA4), + AT_stride_size = (0x02e0|FORM_DATA4), + AT_upper_bound_ref = (0x02f0|FORM_REF), + AT_upper_bound_data2 = (0x02f0|FORM_DATA2), + AT_upper_bound_data4 = (0x02f0|FORM_DATA4), + AT_upper_bound_data8 = (0x02f0|FORM_DATA8), + AT_virtual = (0x0300|FORM_STRING), + + /* GNU extensions. */ + + AT_sf_names = (0x8000|FORM_DATA4), + AT_src_info = (0x8010|FORM_DATA4), + AT_mac_info = (0x8020|FORM_DATA4), + AT_src_coords = (0x8030|FORM_DATA4), + AT_body_begin = (0x8040|FORM_ADDR), + AT_body_end = (0x8050|FORM_ADDR) +}; + +#define AT_lo_user 0x2000 /* implementation-defined range start */ +#define AT_hi_user 0x3ff0 /* implementation-defined range end */ + +/* Location atom names and codes. */ + +enum dwarf_location_atom { + OP_REG = 0x01, + OP_BASEREG = 0x02, + OP_ADDR = 0x03, + OP_CONST = 0x04, + OP_DEREF2 = 0x05, + OP_DEREF4 = 0x06, + OP_ADD = 0x07, + + /* GNU extensions. */ + + OP_MULT = 0x80 +}; + +#define OP_LO_USER 0x80 /* implementation-defined range start */ +#define OP_HI_USER 0xff /* implementation-defined range end */ + +/* Fundamental type names and codes. */ + +enum dwarf_fundamental_type { + FT_char = 0x0001, + FT_signed_char = 0x0002, + FT_unsigned_char = 0x0003, + FT_short = 0x0004, + FT_signed_short = 0x0005, + FT_unsigned_short = 0x0006, + FT_integer = 0x0007, + FT_signed_integer = 0x0008, + FT_unsigned_integer = 0x0009, + FT_long = 0x000a, + FT_signed_long = 0x000b, + FT_unsigned_long = 0x000c, + FT_pointer = 0x000d, /* an alias for (void *) */ + FT_float = 0x000e, + FT_dbl_prec_float = 0x000f, + FT_ext_prec_float = 0x0010, /* breaks "classic" svr4 SDB */ + FT_complex = 0x0011, /* breaks "classic" svr4 SDB */ + FT_dbl_prec_complex = 0x0012, /* breaks "classic" svr4 SDB */ + /* 0x0013 -- reserved */ + FT_void = 0x0014, + FT_boolean = 0x0015, /* breaks "classic" svr4 SDB */ + FT_ext_prec_complex = 0x0016, /* breaks "classic" svr4 SDB */ + FT_label = 0x0017, + + /* GNU extensions + The low order byte must indicate the size (in bytes) for the type. + All of these types will probably break "classic" svr4 SDB. */ + + FT_long_long = 0x8008, + FT_signed_long_long = 0x8108, + FT_unsigned_long_long = 0x8208, + + FT_int8 = 0x9001, + FT_signed_int8 = 0x9101, + FT_unsigned_int8 = 0x9201, + FT_int16 = 0x9302, + FT_signed_int16 = 0x9402, + FT_unsigned_int16 = 0x9502, + FT_int32 = 0x9604, + FT_signed_int32 = 0x9704, + FT_unsigned_int32 = 0x9804, + FT_int64 = 0x9908, + FT_signed_int64 = 0x9a08, + FT_unsigned_int64 = 0x9b08, + FT_int128 = 0x9c10, + FT_signed_int128 = 0x9d10, + FT_unsigned_int128 = 0x9e10, + + FT_real32 = 0xa004, + FT_real64 = 0xa108, + FT_real96 = 0xa20c, + FT_real128 = 0xa310 +}; + +#define FT_lo_user 0x8000 /* implementation-defined range start */ +#define FT_hi_user 0xffff /* implementation defined range end */ + +/* Type modifier names and codes. */ + +enum dwarf_type_modifier { + MOD_pointer_to = 0x01, + MOD_reference_to = 0x02, + MOD_const = 0x03, + MOD_volatile = 0x04 +}; + +#define MOD_lo_user 0x80 /* implementation-defined range start */ +#define MOD_hi_user 0xff /* implementation-defined range end */ + +/* Array ordering names and codes. */ + +enum dwarf_array_dim_ordering { + ORD_row_major = 0, + ORD_col_major = 1 +}; + +/* Array subscript format names and codes. */ + +enum dwarf_subscr_data_formats { + FMT_FT_C_C = 0x0, + FMT_FT_C_X = 0x1, + FMT_FT_X_C = 0x2, + FMT_FT_X_X = 0x3, + FMT_UT_C_C = 0x4, + FMT_UT_C_X = 0x5, + FMT_UT_X_C = 0x6, + FMT_UT_X_X = 0x7, + FMT_ET = 0x8 +}; + +/* Derived from above for ease of use. */ + +#define FMT_CODE(_FUNDAMENTAL_TYPE_P, _LB_CONST_P, _UB_CONST_P) \ + (((_FUNDAMENTAL_TYPE_P) ? 0 : 4) \ + | ((_LB_CONST_P) ? 0 : 2) \ + | ((_UB_CONST_P) ? 0 : 1)) + +/* Source language names and codes. */ + +enum dwarf_source_language { + LANG_C89 = 0x00000001, + LANG_C = 0x00000002, + LANG_ADA83 = 0x00000003, + LANG_C_PLUS_PLUS = 0x00000004, + LANG_COBOL74 = 0x00000005, + LANG_COBOL85 = 0x00000006, + LANG_FORTRAN77 = 0x00000007, + LANG_FORTRAN90 = 0x00000008, + LANG_PASCAL83 = 0x00000009, + LANG_MODULA2 = 0x0000000a, + LANG_JAVA = 0x0000000b +}; + +#define LANG_lo_user 0x00008000 /* implementation-defined range start */ +#define LANG_hi_user 0x0000ffff /* implementation-defined range end */ /* Names and codes for GNU "macinfo" extension. */ -#define MACINFO_start 's' -#define MACINFO_resume 'r' -#define MACINFO_define 'd' -#define MACINFO_undef 'u' +enum dwarf_macinfo_record_type { + MACINFO_start = 's', + MACINFO_resume = 'r', + MACINFO_define = 'd', + MACINFO_undef = 'u' +};