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Source file src/cmd/internal/dwarf/dwarf_defs.go

Documentation: cmd/internal/dwarf

     1  // Copyright 2010 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package dwarf
     6  
     7  // Cut, pasted, tr-and-awk'ed from tables in
     8  // http://dwarfstd.org/doc/Dwarf3.pdf
     9  
    10  // Table 18
    11  const (
    12  	DW_TAG_array_type               = 0x01
    13  	DW_TAG_class_type               = 0x02
    14  	DW_TAG_entry_point              = 0x03
    15  	DW_TAG_enumeration_type         = 0x04
    16  	DW_TAG_formal_parameter         = 0x05
    17  	DW_TAG_imported_declaration     = 0x08
    18  	DW_TAG_label                    = 0x0a
    19  	DW_TAG_lexical_block            = 0x0b
    20  	DW_TAG_member                   = 0x0d
    21  	DW_TAG_pointer_type             = 0x0f
    22  	DW_TAG_reference_type           = 0x10
    23  	DW_TAG_compile_unit             = 0x11
    24  	DW_TAG_string_type              = 0x12
    25  	DW_TAG_structure_type           = 0x13
    26  	DW_TAG_subroutine_type          = 0x15
    27  	DW_TAG_typedef                  = 0x16
    28  	DW_TAG_union_type               = 0x17
    29  	DW_TAG_unspecified_parameters   = 0x18
    30  	DW_TAG_variant                  = 0x19
    31  	DW_TAG_common_block             = 0x1a
    32  	DW_TAG_common_inclusion         = 0x1b
    33  	DW_TAG_inheritance              = 0x1c
    34  	DW_TAG_inlined_subroutine       = 0x1d
    35  	DW_TAG_module                   = 0x1e
    36  	DW_TAG_ptr_to_member_type       = 0x1f
    37  	DW_TAG_set_type                 = 0x20
    38  	DW_TAG_subrange_type            = 0x21
    39  	DW_TAG_with_stmt                = 0x22
    40  	DW_TAG_access_declaration       = 0x23
    41  	DW_TAG_base_type                = 0x24
    42  	DW_TAG_catch_block              = 0x25
    43  	DW_TAG_const_type               = 0x26
    44  	DW_TAG_constant                 = 0x27
    45  	DW_TAG_enumerator               = 0x28
    46  	DW_TAG_file_type                = 0x29
    47  	DW_TAG_friend                   = 0x2a
    48  	DW_TAG_namelist                 = 0x2b
    49  	DW_TAG_namelist_item            = 0x2c
    50  	DW_TAG_packed_type              = 0x2d
    51  	DW_TAG_subprogram               = 0x2e
    52  	DW_TAG_template_type_parameter  = 0x2f
    53  	DW_TAG_template_value_parameter = 0x30
    54  	DW_TAG_thrown_type              = 0x31
    55  	DW_TAG_try_block                = 0x32
    56  	DW_TAG_variant_part             = 0x33
    57  	DW_TAG_variable                 = 0x34
    58  	DW_TAG_volatile_type            = 0x35
    59  	// Dwarf3
    60  	DW_TAG_dwarf_procedure  = 0x36
    61  	DW_TAG_restrict_type    = 0x37
    62  	DW_TAG_interface_type   = 0x38
    63  	DW_TAG_namespace        = 0x39
    64  	DW_TAG_imported_module  = 0x3a
    65  	DW_TAG_unspecified_type = 0x3b
    66  	DW_TAG_partial_unit     = 0x3c
    67  	DW_TAG_imported_unit    = 0x3d
    68  	DW_TAG_condition        = 0x3f
    69  	DW_TAG_shared_type      = 0x40
    70  	// Dwarf4
    71  	DW_TAG_type_unit             = 0x41
    72  	DW_TAG_rvalue_reference_type = 0x42
    73  	DW_TAG_template_alias        = 0x43
    74  
    75  	// User defined
    76  	DW_TAG_lo_user = 0x4080
    77  	DW_TAG_hi_user = 0xffff
    78  )
    79  
    80  // Table 19
    81  const (
    82  	DW_CHILDREN_no  = 0x00
    83  	DW_CHILDREN_yes = 0x01
    84  )
    85  
    86  // Not from the spec, but logically belongs here
    87  const (
    88  	DW_CLS_ADDRESS = 0x01 + iota
    89  	DW_CLS_BLOCK
    90  	DW_CLS_CONSTANT
    91  	DW_CLS_FLAG
    92  	DW_CLS_PTR // lineptr, loclistptr, macptr, rangelistptr
    93  	DW_CLS_REFERENCE
    94  	DW_CLS_ADDRLOC
    95  	DW_CLS_STRING
    96  )
    97  
    98  // Table 20
    99  const (
   100  	DW_AT_sibling              = 0x01 // reference
   101  	DW_AT_location             = 0x02 // block, loclistptr
   102  	DW_AT_name                 = 0x03 // string
   103  	DW_AT_ordering             = 0x09 // constant
   104  	DW_AT_byte_size            = 0x0b // block, constant, reference
   105  	DW_AT_bit_offset           = 0x0c // block, constant, reference
   106  	DW_AT_bit_size             = 0x0d // block, constant, reference
   107  	DW_AT_stmt_list            = 0x10 // lineptr
   108  	DW_AT_low_pc               = 0x11 // address
   109  	DW_AT_high_pc              = 0x12 // address
   110  	DW_AT_language             = 0x13 // constant
   111  	DW_AT_discr                = 0x15 // reference
   112  	DW_AT_discr_value          = 0x16 // constant
   113  	DW_AT_visibility           = 0x17 // constant
   114  	DW_AT_import               = 0x18 // reference
   115  	DW_AT_string_length        = 0x19 // block, loclistptr
   116  	DW_AT_common_reference     = 0x1a // reference
   117  	DW_AT_comp_dir             = 0x1b // string
   118  	DW_AT_const_value          = 0x1c // block, constant, string
   119  	DW_AT_containing_type      = 0x1d // reference
   120  	DW_AT_default_value        = 0x1e // reference
   121  	DW_AT_inline               = 0x20 // constant
   122  	DW_AT_is_optional          = 0x21 // flag
   123  	DW_AT_lower_bound          = 0x22 // block, constant, reference
   124  	DW_AT_producer             = 0x25 // string
   125  	DW_AT_prototyped           = 0x27 // flag
   126  	DW_AT_return_addr          = 0x2a // block, loclistptr
   127  	DW_AT_start_scope          = 0x2c // constant
   128  	DW_AT_bit_stride           = 0x2e // constant
   129  	DW_AT_upper_bound          = 0x2f // block, constant, reference
   130  	DW_AT_abstract_origin      = 0x31 // reference
   131  	DW_AT_accessibility        = 0x32 // constant
   132  	DW_AT_address_class        = 0x33 // constant
   133  	DW_AT_artificial           = 0x34 // flag
   134  	DW_AT_base_types           = 0x35 // reference
   135  	DW_AT_calling_convention   = 0x36 // constant
   136  	DW_AT_count                = 0x37 // block, constant, reference
   137  	DW_AT_data_member_location = 0x38 // block, constant, loclistptr
   138  	DW_AT_decl_column          = 0x39 // constant
   139  	DW_AT_decl_file            = 0x3a // constant
   140  	DW_AT_decl_line            = 0x3b // constant
   141  	DW_AT_declaration          = 0x3c // flag
   142  	DW_AT_discr_list           = 0x3d // block
   143  	DW_AT_encoding             = 0x3e // constant
   144  	DW_AT_external             = 0x3f // flag
   145  	DW_AT_frame_base           = 0x40 // block, loclistptr
   146  	DW_AT_friend               = 0x41 // reference
   147  	DW_AT_identifier_case      = 0x42 // constant
   148  	DW_AT_macro_info           = 0x43 // macptr
   149  	DW_AT_namelist_item        = 0x44 // block
   150  	DW_AT_priority             = 0x45 // reference
   151  	DW_AT_segment              = 0x46 // block, loclistptr
   152  	DW_AT_specification        = 0x47 // reference
   153  	DW_AT_static_link          = 0x48 // block, loclistptr
   154  	DW_AT_type                 = 0x49 // reference
   155  	DW_AT_use_location         = 0x4a // block, loclistptr
   156  	DW_AT_variable_parameter   = 0x4b // flag
   157  	DW_AT_virtuality           = 0x4c // constant
   158  	DW_AT_vtable_elem_location = 0x4d // block, loclistptr
   159  	// Dwarf3
   160  	DW_AT_allocated      = 0x4e // block, constant, reference
   161  	DW_AT_associated     = 0x4f // block, constant, reference
   162  	DW_AT_data_location  = 0x50 // block
   163  	DW_AT_byte_stride    = 0x51 // block, constant, reference
   164  	DW_AT_entry_pc       = 0x52 // address
   165  	DW_AT_use_UTF8       = 0x53 // flag
   166  	DW_AT_extension      = 0x54 // reference
   167  	DW_AT_ranges         = 0x55 // rangelistptr
   168  	DW_AT_trampoline     = 0x56 // address, flag, reference, string
   169  	DW_AT_call_column    = 0x57 // constant
   170  	DW_AT_call_file      = 0x58 // constant
   171  	DW_AT_call_line      = 0x59 // constant
   172  	DW_AT_description    = 0x5a // string
   173  	DW_AT_binary_scale   = 0x5b // constant
   174  	DW_AT_decimal_scale  = 0x5c // constant
   175  	DW_AT_small          = 0x5d // reference
   176  	DW_AT_decimal_sign   = 0x5e // constant
   177  	DW_AT_digit_count    = 0x5f // constant
   178  	DW_AT_picture_string = 0x60 // string
   179  	DW_AT_mutable        = 0x61 // flag
   180  	DW_AT_threads_scaled = 0x62 // flag
   181  	DW_AT_explicit       = 0x63 // flag
   182  	DW_AT_object_pointer = 0x64 // reference
   183  	DW_AT_endianity      = 0x65 // constant
   184  	DW_AT_elemental      = 0x66 // flag
   185  	DW_AT_pure           = 0x67 // flag
   186  	DW_AT_recursive      = 0x68 // flag
   187  
   188  	DW_AT_lo_user = 0x2000 // ---
   189  	DW_AT_hi_user = 0x3fff // ---
   190  )
   191  
   192  // Table 21
   193  const (
   194  	DW_FORM_addr      = 0x01 // address
   195  	DW_FORM_block2    = 0x03 // block
   196  	DW_FORM_block4    = 0x04 // block
   197  	DW_FORM_data2     = 0x05 // constant
   198  	DW_FORM_data4     = 0x06 // constant, lineptr, loclistptr, macptr, rangelistptr
   199  	DW_FORM_data8     = 0x07 // constant, lineptr, loclistptr, macptr, rangelistptr
   200  	DW_FORM_string    = 0x08 // string
   201  	DW_FORM_block     = 0x09 // block
   202  	DW_FORM_block1    = 0x0a // block
   203  	DW_FORM_data1     = 0x0b // constant
   204  	DW_FORM_flag      = 0x0c // flag
   205  	DW_FORM_sdata     = 0x0d // constant
   206  	DW_FORM_strp      = 0x0e // string
   207  	DW_FORM_udata     = 0x0f // constant
   208  	DW_FORM_ref_addr  = 0x10 // reference
   209  	DW_FORM_ref1      = 0x11 // reference
   210  	DW_FORM_ref2      = 0x12 // reference
   211  	DW_FORM_ref4      = 0x13 // reference
   212  	DW_FORM_ref8      = 0x14 // reference
   213  	DW_FORM_ref_udata = 0x15 // reference
   214  	DW_FORM_indirect  = 0x16 // (see Section 7.5.3)
   215  	// Dwarf4
   216  	DW_FORM_sec_offset   = 0x17 // lineptr, loclistptr, macptr, rangelistptr
   217  	DW_FORM_exprloc      = 0x18 // exprloc
   218  	DW_FORM_flag_present = 0x19 // flag
   219  	DW_FORM_ref_sig8     = 0x20 // reference
   220  )
   221  
   222  // Table 24 (#operands, notes)
   223  const (
   224  	DW_OP_addr                = 0x03 // 1 constant address (size target specific)
   225  	DW_OP_deref               = 0x06 // 0
   226  	DW_OP_const1u             = 0x08 // 1 1-byte constant
   227  	DW_OP_const1s             = 0x09 // 1 1-byte constant
   228  	DW_OP_const2u             = 0x0a // 1 2-byte constant
   229  	DW_OP_const2s             = 0x0b // 1 2-byte constant
   230  	DW_OP_const4u             = 0x0c // 1 4-byte constant
   231  	DW_OP_const4s             = 0x0d // 1 4-byte constant
   232  	DW_OP_const8u             = 0x0e // 1 8-byte constant
   233  	DW_OP_const8s             = 0x0f // 1 8-byte constant
   234  	DW_OP_constu              = 0x10 // 1 ULEB128 constant
   235  	DW_OP_consts              = 0x11 // 1 SLEB128 constant
   236  	DW_OP_dup                 = 0x12 // 0
   237  	DW_OP_drop                = 0x13 // 0
   238  	DW_OP_over                = 0x14 // 0
   239  	DW_OP_pick                = 0x15 // 1 1-byte stack index
   240  	DW_OP_swap                = 0x16 // 0
   241  	DW_OP_rot                 = 0x17 // 0
   242  	DW_OP_xderef              = 0x18 // 0
   243  	DW_OP_abs                 = 0x19 // 0
   244  	DW_OP_and                 = 0x1a // 0
   245  	DW_OP_div                 = 0x1b // 0
   246  	DW_OP_minus               = 0x1c // 0
   247  	DW_OP_mod                 = 0x1d // 0
   248  	DW_OP_mul                 = 0x1e // 0
   249  	DW_OP_neg                 = 0x1f // 0
   250  	DW_OP_not                 = 0x20 // 0
   251  	DW_OP_or                  = 0x21 // 0
   252  	DW_OP_plus                = 0x22 // 0
   253  	DW_OP_plus_uconst         = 0x23 // 1 ULEB128 addend
   254  	DW_OP_shl                 = 0x24 // 0
   255  	DW_OP_shr                 = 0x25 // 0
   256  	DW_OP_shra                = 0x26 // 0
   257  	DW_OP_xor                 = 0x27 // 0
   258  	DW_OP_skip                = 0x2f // 1 signed 2-byte constant
   259  	DW_OP_bra                 = 0x28 // 1 signed 2-byte constant
   260  	DW_OP_eq                  = 0x29 // 0
   261  	DW_OP_ge                  = 0x2a // 0
   262  	DW_OP_gt                  = 0x2b // 0
   263  	DW_OP_le                  = 0x2c // 0
   264  	DW_OP_lt                  = 0x2d // 0
   265  	DW_OP_ne                  = 0x2e // 0
   266  	DW_OP_lit0                = 0x30 // 0 ...
   267  	DW_OP_lit31               = 0x4f // 0 literals 0..31 = (DW_OP_lit0 + literal)
   268  	DW_OP_reg0                = 0x50 // 0 ..
   269  	DW_OP_reg31               = 0x6f // 0 reg 0..31 = (DW_OP_reg0 + regnum)
   270  	DW_OP_breg0               = 0x70 // 1 ...
   271  	DW_OP_breg31              = 0x8f // 1 SLEB128 offset base register 0..31 = (DW_OP_breg0 + regnum)
   272  	DW_OP_regx                = 0x90 // 1 ULEB128 register
   273  	DW_OP_fbreg               = 0x91 // 1 SLEB128 offset
   274  	DW_OP_bregx               = 0x92 // 2 ULEB128 register followed by SLEB128 offset
   275  	DW_OP_piece               = 0x93 // 1 ULEB128 size of piece addressed
   276  	DW_OP_deref_size          = 0x94 // 1 1-byte size of data retrieved
   277  	DW_OP_xderef_size         = 0x95 // 1 1-byte size of data retrieved
   278  	DW_OP_nop                 = 0x96 // 0
   279  	DW_OP_push_object_address = 0x97 // 0
   280  	DW_OP_call2               = 0x98 // 1 2-byte offset of DIE
   281  	DW_OP_call4               = 0x99 // 1 4-byte offset of DIE
   282  	DW_OP_call_ref            = 0x9a // 1 4- or 8-byte offset of DIE
   283  	DW_OP_form_tls_address    = 0x9b // 0
   284  	DW_OP_call_frame_cfa      = 0x9c // 0
   285  	DW_OP_bit_piece           = 0x9d // 2
   286  	DW_OP_lo_user             = 0xe0
   287  	DW_OP_hi_user             = 0xff
   288  )
   289  
   290  // Table 25
   291  const (
   292  	DW_ATE_address         = 0x01
   293  	DW_ATE_boolean         = 0x02
   294  	DW_ATE_complex_float   = 0x03
   295  	DW_ATE_float           = 0x04
   296  	DW_ATE_signed          = 0x05
   297  	DW_ATE_signed_char     = 0x06
   298  	DW_ATE_unsigned        = 0x07
   299  	DW_ATE_unsigned_char   = 0x08
   300  	DW_ATE_imaginary_float = 0x09
   301  	DW_ATE_packed_decimal  = 0x0a
   302  	DW_ATE_numeric_string  = 0x0b
   303  	DW_ATE_edited          = 0x0c
   304  	DW_ATE_signed_fixed    = 0x0d
   305  	DW_ATE_unsigned_fixed  = 0x0e
   306  	DW_ATE_decimal_float   = 0x0f
   307  	DW_ATE_lo_user         = 0x80
   308  	DW_ATE_hi_user         = 0xff
   309  )
   310  
   311  // Table 26
   312  const (
   313  	DW_DS_unsigned           = 0x01
   314  	DW_DS_leading_overpunch  = 0x02
   315  	DW_DS_trailing_overpunch = 0x03
   316  	DW_DS_leading_separate   = 0x04
   317  	DW_DS_trailing_separate  = 0x05
   318  )
   319  
   320  // Table 27
   321  const (
   322  	DW_END_default = 0x00
   323  	DW_END_big     = 0x01
   324  	DW_END_little  = 0x02
   325  	DW_END_lo_user = 0x40
   326  	DW_END_hi_user = 0xff
   327  )
   328  
   329  // Table 28
   330  const (
   331  	DW_ACCESS_public    = 0x01
   332  	DW_ACCESS_protected = 0x02
   333  	DW_ACCESS_private   = 0x03
   334  )
   335  
   336  // Table 29
   337  const (
   338  	DW_VIS_local     = 0x01
   339  	DW_VIS_exported  = 0x02
   340  	DW_VIS_qualified = 0x03
   341  )
   342  
   343  // Table 30
   344  const (
   345  	DW_VIRTUALITY_none         = 0x00
   346  	DW_VIRTUALITY_virtual      = 0x01
   347  	DW_VIRTUALITY_pure_virtual = 0x02
   348  )
   349  
   350  // Table 31
   351  const (
   352  	DW_LANG_C89         = 0x0001
   353  	DW_LANG_C           = 0x0002
   354  	DW_LANG_Ada83       = 0x0003
   355  	DW_LANG_C_plus_plus = 0x0004
   356  	DW_LANG_Cobol74     = 0x0005
   357  	DW_LANG_Cobol85     = 0x0006
   358  	DW_LANG_Fortran77   = 0x0007
   359  	DW_LANG_Fortran90   = 0x0008
   360  	DW_LANG_Pascal83    = 0x0009
   361  	DW_LANG_Modula2     = 0x000a
   362  	// Dwarf3
   363  	DW_LANG_Java           = 0x000b
   364  	DW_LANG_C99            = 0x000c
   365  	DW_LANG_Ada95          = 0x000d
   366  	DW_LANG_Fortran95      = 0x000e
   367  	DW_LANG_PLI            = 0x000f
   368  	DW_LANG_ObjC           = 0x0010
   369  	DW_LANG_ObjC_plus_plus = 0x0011
   370  	DW_LANG_UPC            = 0x0012
   371  	DW_LANG_D              = 0x0013
   372  	// Dwarf4
   373  	DW_LANG_Python = 0x0014
   374  	// Dwarf5
   375  	DW_LANG_Go = 0x0016
   376  
   377  	DW_LANG_lo_user = 0x8000
   378  	DW_LANG_hi_user = 0xffff
   379  )
   380  
   381  // Table 32
   382  const (
   383  	DW_ID_case_sensitive   = 0x00
   384  	DW_ID_up_case          = 0x01
   385  	DW_ID_down_case        = 0x02
   386  	DW_ID_case_insensitive = 0x03
   387  )
   388  
   389  // Table 33
   390  const (
   391  	DW_CC_normal  = 0x01
   392  	DW_CC_program = 0x02
   393  	DW_CC_nocall  = 0x03
   394  	DW_CC_lo_user = 0x40
   395  	DW_CC_hi_user = 0xff
   396  )
   397  
   398  // Table 34
   399  const (
   400  	DW_INL_not_inlined          = 0x00
   401  	DW_INL_inlined              = 0x01
   402  	DW_INL_declared_not_inlined = 0x02
   403  	DW_INL_declared_inlined     = 0x03
   404  )
   405  
   406  // Table 35
   407  const (
   408  	DW_ORD_row_major = 0x00
   409  	DW_ORD_col_major = 0x01
   410  )
   411  
   412  // Table 36
   413  const (
   414  	DW_DSC_label = 0x00
   415  	DW_DSC_range = 0x01
   416  )
   417  
   418  // Table 37
   419  const (
   420  	DW_LNS_copy             = 0x01
   421  	DW_LNS_advance_pc       = 0x02
   422  	DW_LNS_advance_line     = 0x03
   423  	DW_LNS_set_file         = 0x04
   424  	DW_LNS_set_column       = 0x05
   425  	DW_LNS_negate_stmt      = 0x06
   426  	DW_LNS_set_basic_block  = 0x07
   427  	DW_LNS_const_add_pc     = 0x08
   428  	DW_LNS_fixed_advance_pc = 0x09
   429  	// Dwarf3
   430  	DW_LNS_set_prologue_end   = 0x0a
   431  	DW_LNS_set_epilogue_begin = 0x0b
   432  	DW_LNS_set_isa            = 0x0c
   433  )
   434  
   435  // Table 38
   436  const (
   437  	DW_LNE_end_sequence = 0x01
   438  	DW_LNE_set_address  = 0x02
   439  	DW_LNE_define_file  = 0x03
   440  	DW_LNE_lo_user      = 0x80
   441  	DW_LNE_hi_user      = 0xff
   442  )
   443  
   444  // Table 39
   445  const (
   446  	DW_MACINFO_define     = 0x01
   447  	DW_MACINFO_undef      = 0x02
   448  	DW_MACINFO_start_file = 0x03
   449  	DW_MACINFO_end_file   = 0x04
   450  	DW_MACINFO_vendor_ext = 0xff
   451  )
   452  
   453  // Table 40.
   454  const (
   455  	// operand,...
   456  	DW_CFA_nop              = 0x00
   457  	DW_CFA_set_loc          = 0x01 // address
   458  	DW_CFA_advance_loc1     = 0x02 // 1-byte delta
   459  	DW_CFA_advance_loc2     = 0x03 // 2-byte delta
   460  	DW_CFA_advance_loc4     = 0x04 // 4-byte delta
   461  	DW_CFA_offset_extended  = 0x05 // ULEB128 register, ULEB128 offset
   462  	DW_CFA_restore_extended = 0x06 // ULEB128 register
   463  	DW_CFA_undefined        = 0x07 // ULEB128 register
   464  	DW_CFA_same_value       = 0x08 // ULEB128 register
   465  	DW_CFA_register         = 0x09 // ULEB128 register, ULEB128 register
   466  	DW_CFA_remember_state   = 0x0a
   467  	DW_CFA_restore_state    = 0x0b
   468  
   469  	DW_CFA_def_cfa            = 0x0c // ULEB128 register, ULEB128 offset
   470  	DW_CFA_def_cfa_register   = 0x0d // ULEB128 register
   471  	DW_CFA_def_cfa_offset     = 0x0e // ULEB128 offset
   472  	DW_CFA_def_cfa_expression = 0x0f // BLOCK
   473  	DW_CFA_expression         = 0x10 // ULEB128 register, BLOCK
   474  	DW_CFA_offset_extended_sf = 0x11 // ULEB128 register, SLEB128 offset
   475  	DW_CFA_def_cfa_sf         = 0x12 // ULEB128 register, SLEB128 offset
   476  	DW_CFA_def_cfa_offset_sf  = 0x13 // SLEB128 offset
   477  	DW_CFA_val_offset         = 0x14 // ULEB128, ULEB128
   478  	DW_CFA_val_offset_sf      = 0x15 // ULEB128, SLEB128
   479  	DW_CFA_val_expression     = 0x16 // ULEB128, BLOCK
   480  
   481  	DW_CFA_lo_user = 0x1c
   482  	DW_CFA_hi_user = 0x3f
   483  
   484  	// Opcodes that take an addend operand.
   485  	DW_CFA_advance_loc = 0x1 << 6 // +delta
   486  	DW_CFA_offset      = 0x2 << 6 // +register (ULEB128 offset)
   487  	DW_CFA_restore     = 0x3 << 6 // +register
   488  )
   489  

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