gdb/testsuite/gdb.dwarf2/member-ptr-forwardref.S

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2010 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 /* The goal of this test is to provide anonymous DW_TAG_structure_type
  19    containing __pfn + __delta (read in by quirk_gcc_member_function_pointer)
  20    before DW_TAG_structure_type of "class C" to exploit the forward reference
  21    through "__pfn" and back from DW_TAG_member "fp" of "class C".  As the
  22    compiler may place the DIEs in arbitrary order they are rather prepared as
  23    a .S file.
  24
  25    class C;
  26    typedef int (C::*fp_t) ();
  27    fp_t fp;
  28    class C
  29      {
  30        int (C::*fp) ();
  31      } c;  */
  32
  33         .file   "member-ptr-forwardref.cc"
  34         .section        .debug_abbrev,"",@progbits
  35 .Ldebug_abbrev0:
  36         .section        .debug_info,"",@progbits
  37 .Ldebug_info0:
  38         .section        .debug_line,"",@progbits
  39 .Ldebug_line0:
  40         .text
  41 .Ltext0:
  42 .globl fp
  43         .bss
  44         .align 4
  45         .type   fp, @object
  46         .size   fp, 8
  47 fp:
  48         .zero   8
  49 .globl c
  50         .align 4
  51         .type   c, @object
  52         .size   c, 8
  53 c:
  54         .zero   8
  55         .text
  56 .Letext0:
  57         .file 1 "gdb.dwarf2/member-ptr-forwardref.cc"
  58         .section        .debug_info
  59         .long   0xa9    # Length of Compilation Unit Info
  60         .value  0x3     # DWARF version number
  61         .long   .Ldebug_abbrev0 # Offset Into Abbrev. Section
  62         .byte   0x4     # Pointer Size (in bytes)
  63         .uleb128 0x1    # (DIE (0xb) DW_TAG_compile_unit)
  64         .long   .LASF2  # DW_AT_producer: "GNU C++ 4.4.2 20091222 (Red Hat 4.4.2-20)"
  65         .byte   0x4     # DW_AT_language
  66         .long   .LASF3  # DW_AT_name: "gdb.dwarf2/member-ptr-forwardref.cc"
  67         .long   .LASF4  # DW_AT_comp_dir: "gdb/testsuite"
  68         .long   .Ltext0 # DW_AT_low_pc
  69         .long   .Letext0        # DW_AT_high_pc
  70         .long   .Ldebug_line0   # DW_AT_stmt_list
  71         .uleb128 0x2    # (DIE (0x25) DW_TAG_typedef)
  72         .long   .LASF5  # DW_AT_name: "fp_t"
  73         .byte   0x1     # DW_AT_decl_file (gdb.dwarf2/member-ptr-forwardref.cc)
  74         .byte   0x13    # DW_AT_decl_line
  75         .long   0x30    # DW_AT_type
  76         .uleb128 0x3    # (DIE (0x30) DW_TAG_structure_type)
  77         .byte   0x8     # DW_AT_byte_size
  78         .byte   0x1     # DW_AT_decl_file (gdb.dwarf2/member-ptr-forwardref.cc)
  79         .byte   0x13    # DW_AT_decl_line
  80         .long   0x51    # DW_AT_sibling
  81         .uleb128 0x4    # (DIE (0x38) DW_TAG_member)
  82         .long   .LASF0  # DW_AT_name: "__pfn"
  83         .byte   0x1     # DW_AT_decl_file (gdb.dwarf2/member-ptr-forwardref.cc)
  84         .byte   0x13    # DW_AT_decl_line
  85         .long   0x85    # DW_AT_type
  86         .sleb128 0      # DW_AT_data_member_location
  87         .uleb128 0x4    # (DIE (0x44) DW_TAG_member)
  88         .long   .LASF1  # DW_AT_name: "__delta"
  89         .byte   0x1     # DW_AT_decl_file (gdb.dwarf2/member-ptr-forwardref.cc)
  90         .byte   0x13    # DW_AT_decl_line
  91         .long   0x61    # DW_AT_type
  92         .sleb128 4      # DW_AT_data_member_location
  93         .byte   0x0     # end of children of DIE 0x30
  94         .uleb128 0x5    # (DIE (0x51) DW_TAG_subroutine_type)
  95         .long   0x61    # DW_AT_type
  96         .long   0x61    # DW_AT_sibling
  97         .uleb128 0x6    # (DIE (0x5a) DW_TAG_formal_parameter)
  98         .long   0x68    # DW_AT_type
  99         .byte   0x1     # DW_AT_artificial
 100         .byte   0x0     # end of children of DIE 0x51
 101         .uleb128 0x7    # (DIE (0x61) DW_TAG_base_type)
 102         .byte   0x4     # DW_AT_byte_size
 103         .byte   0x5     # DW_AT_encoding
 104         .ascii "int\0"  # DW_AT_name
 105         .uleb128 0x8    # (DIE (0x68) DW_TAG_pointer_type)
 106         .byte   0x4     # DW_AT_byte_size
 107         .long   0x6e    # DW_AT_type
 108         .uleb128 0x9    # (DIE (0x6e) DW_TAG_structure_type)
 109         .ascii "C\0"    # DW_AT_name
 110         .byte   0x8     # DW_AT_byte_size
 111         .byte   0x1     # DW_AT_decl_file (gdb.dwarf2/member-ptr-forwardref.cc)
 112         .byte   0x16    # DW_AT_decl_line
 113         .long   0x85    # DW_AT_sibling
 114         .uleb128 0xa    # (DIE (0x78) DW_TAG_member)
 115         .ascii "fp\0"   # DW_AT_name
 116         .byte   0x1     # DW_AT_decl_file (gdb.dwarf2/member-ptr-forwardref.cc)
 117         .byte   0x17    # DW_AT_decl_line
 118         .long   0x30    # DW_AT_type
 119         .sleb128 0      # DW_AT_data_member_location
 120         .byte   0x3     # DW_AT_accessibility
 121         .byte   0x0     # end of children of DIE 0x6e
 122         .uleb128 0x8    # (DIE (0x85) DW_TAG_pointer_type)
 123         .byte   0x4     # DW_AT_byte_size
 124         .long   0x51    # DW_AT_type
 125         .uleb128 0xb    # (DIE (0x8b) DW_TAG_variable)
 126         .ascii "fp\0"   # DW_AT_name
 127         .byte   0x1     # DW_AT_decl_file (gdb.dwarf2/member-ptr-forwardref.cc)
 128         .byte   0x14    # DW_AT_decl_line
 129         .long   0x25    # DW_AT_type
 130         .byte   0x1     # DW_AT_external
 131         .byte   0x5     # DW_AT_location
 132         .byte   0x3     # DW_OP_addr
 133         .long   fp
 134         .uleb128 0xb    # (DIE (0x9c) DW_TAG_variable)
 135         .ascii "c\0"    # DW_AT_name
 136         .byte   0x1     # DW_AT_decl_file (gdb.dwarf2/member-ptr-forwardref.cc)
 137         .byte   0x18    # DW_AT_decl_line
 138         .long   0x6e    # DW_AT_type
 139         .byte   0x1     # DW_AT_external
 140         .byte   0x5     # DW_AT_location
 141         .byte   0x3     # DW_OP_addr
 142         .long   c
 143         .byte   0x0     # end of children of DIE 0xb
 144         .section        .debug_abbrev
 145         .uleb128 0x1    # (abbrev code)
 146         .uleb128 0x11   # (TAG: DW_TAG_compile_unit)
 147         .byte   0x1     # DW_children_yes
 148         .uleb128 0x25   # (DW_AT_producer)
 149         .uleb128 0xe    # (DW_FORM_strp)
 150         .uleb128 0x13   # (DW_AT_language)
 151         .uleb128 0xb    # (DW_FORM_data1)
 152         .uleb128 0x3    # (DW_AT_name)
 153         .uleb128 0xe    # (DW_FORM_strp)
 154         .uleb128 0x1b   # (DW_AT_comp_dir)
 155         .uleb128 0xe    # (DW_FORM_strp)
 156         .uleb128 0x11   # (DW_AT_low_pc)
 157         .uleb128 0x1    # (DW_FORM_addr)
 158         .uleb128 0x12   # (DW_AT_high_pc)
 159         .uleb128 0x1    # (DW_FORM_addr)
 160         .uleb128 0x10   # (DW_AT_stmt_list)
 161         .uleb128 0x6    # (DW_FORM_data4)
 162         .byte   0x0
 163         .byte   0x0
 164         .uleb128 0x2    # (abbrev code)
 165         .uleb128 0x16   # (TAG: DW_TAG_typedef)
 166         .byte   0x0     # DW_children_no
 167         .uleb128 0x3    # (DW_AT_name)
 168         .uleb128 0xe    # (DW_FORM_strp)
 169         .uleb128 0x3a   # (DW_AT_decl_file)
 170         .uleb128 0xb    # (DW_FORM_data1)
 171         .uleb128 0x3b   # (DW_AT_decl_line)
 172         .uleb128 0xb    # (DW_FORM_data1)
 173         .uleb128 0x49   # (DW_AT_type)
 174         .uleb128 0x13   # (DW_FORM_ref4)
 175         .byte   0x0
 176         .byte   0x0
 177         .uleb128 0x3    # (abbrev code)
 178         .uleb128 0x13   # (TAG: DW_TAG_structure_type)
 179         .byte   0x1     # DW_children_yes
 180         .uleb128 0xb    # (DW_AT_byte_size)
 181         .uleb128 0xb    # (DW_FORM_data1)
 182         .uleb128 0x3a   # (DW_AT_decl_file)
 183         .uleb128 0xb    # (DW_FORM_data1)
 184         .uleb128 0x3b   # (DW_AT_decl_line)
 185         .uleb128 0xb    # (DW_FORM_data1)
 186         .uleb128 0x1    # (DW_AT_sibling)
 187         .uleb128 0x13   # (DW_FORM_ref4)
 188         .byte   0x0
 189         .byte   0x0
 190         .uleb128 0x4    # (abbrev code)
 191         .uleb128 0xd    # (TAG: DW_TAG_member)
 192         .byte   0x0     # DW_children_no
 193         .uleb128 0x3    # (DW_AT_name)
 194         .uleb128 0xe    # (DW_FORM_strp)
 195         .uleb128 0x3a   # (DW_AT_decl_file)
 196         .uleb128 0xb    # (DW_FORM_data1)
 197         .uleb128 0x3b   # (DW_AT_decl_line)
 198         .uleb128 0xb    # (DW_FORM_data1)
 199         .uleb128 0x49   # (DW_AT_type)
 200         .uleb128 0x13   # (DW_FORM_ref4)
 201         .uleb128 0x38   # (DW_AT_data_member_location)
 202         .uleb128 0xd    # (DW_FORM_sdata)
 203         .byte   0x0
 204         .byte   0x0
 205         .uleb128 0x5    # (abbrev code)
 206         .uleb128 0x15   # (TAG: DW_TAG_subroutine_type)
 207         .byte   0x1     # DW_children_yes
 208         .uleb128 0x49   # (DW_AT_type)
 209         .uleb128 0x13   # (DW_FORM_ref4)
 210         .uleb128 0x1    # (DW_AT_sibling)
 211         .uleb128 0x13   # (DW_FORM_ref4)
 212         .byte   0x0
 213         .byte   0x0
 214         .uleb128 0x6    # (abbrev code)
 215         .uleb128 0x5    # (TAG: DW_TAG_formal_parameter)
 216         .byte   0x0     # DW_children_no
 217         .uleb128 0x49   # (DW_AT_type)
 218         .uleb128 0x13   # (DW_FORM_ref4)
 219         .uleb128 0x34   # (DW_AT_artificial)
 220         .uleb128 0xc    # (DW_FORM_flag)
 221         .byte   0x0
 222         .byte   0x0
 223         .uleb128 0x7    # (abbrev code)
 224         .uleb128 0x24   # (TAG: DW_TAG_base_type)
 225         .byte   0x0     # DW_children_no
 226         .uleb128 0xb    # (DW_AT_byte_size)
 227         .uleb128 0xb    # (DW_FORM_data1)
 228         .uleb128 0x3e   # (DW_AT_encoding)
 229         .uleb128 0xb    # (DW_FORM_data1)
 230         .uleb128 0x3    # (DW_AT_name)
 231         .uleb128 0x8    # (DW_FORM_string)
 232         .byte   0x0
 233         .byte   0x0
 234         .uleb128 0x8    # (abbrev code)
 235         .uleb128 0xf    # (TAG: DW_TAG_pointer_type)
 236         .byte   0x0     # DW_children_no
 237         .uleb128 0xb    # (DW_AT_byte_size)
 238         .uleb128 0xb    # (DW_FORM_data1)
 239         .uleb128 0x49   # (DW_AT_type)
 240         .uleb128 0x13   # (DW_FORM_ref4)
 241         .byte   0x0
 242         .byte   0x0
 243         .uleb128 0x9    # (abbrev code)
 244         .uleb128 0x13   # (TAG: DW_TAG_structure_type)
 245         .byte   0x1     # DW_children_yes
 246         .uleb128 0x3    # (DW_AT_name)
 247         .uleb128 0x8    # (DW_FORM_string)
 248         .uleb128 0xb    # (DW_AT_byte_size)
 249         .uleb128 0xb    # (DW_FORM_data1)
 250         .uleb128 0x3a   # (DW_AT_decl_file)
 251         .uleb128 0xb    # (DW_FORM_data1)
 252         .uleb128 0x3b   # (DW_AT_decl_line)
 253         .uleb128 0xb    # (DW_FORM_data1)
 254         .uleb128 0x1    # (DW_AT_sibling)
 255         .uleb128 0x13   # (DW_FORM_ref4)
 256         .byte   0x0
 257         .byte   0x0
 258         .uleb128 0xa    # (abbrev code)
 259         .uleb128 0xd    # (TAG: DW_TAG_member)
 260         .byte   0x0     # DW_children_no
 261         .uleb128 0x3    # (DW_AT_name)
 262         .uleb128 0x8    # (DW_FORM_string)
 263         .uleb128 0x3a   # (DW_AT_decl_file)
 264         .uleb128 0xb    # (DW_FORM_data1)
 265         .uleb128 0x3b   # (DW_AT_decl_line)
 266         .uleb128 0xb    # (DW_FORM_data1)
 267         .uleb128 0x49   # (DW_AT_type)
 268         .uleb128 0x13   # (DW_FORM_ref4)
 269         .uleb128 0x38   # (DW_AT_data_member_location)
 270         .uleb128 0xd    # (DW_FORM_sdata)
 271         .uleb128 0x32   # (DW_AT_accessibility)
 272         .uleb128 0xb    # (DW_FORM_data1)
 273         .byte   0x0
 274         .byte   0x0
 275         .uleb128 0xb    # (abbrev code)
 276         .uleb128 0x34   # (TAG: DW_TAG_variable)
 277         .byte   0x0     # DW_children_no
 278         .uleb128 0x3    # (DW_AT_name)
 279         .uleb128 0x8    # (DW_FORM_string)
 280         .uleb128 0x3a   # (DW_AT_decl_file)
 281         .uleb128 0xb    # (DW_FORM_data1)
 282         .uleb128 0x3b   # (DW_AT_decl_line)
 283         .uleb128 0xb    # (DW_FORM_data1)
 284         .uleb128 0x49   # (DW_AT_type)
 285         .uleb128 0x13   # (DW_FORM_ref4)
 286         .uleb128 0x3f   # (DW_AT_external)
 287         .uleb128 0xc    # (DW_FORM_flag)
 288         .uleb128 0x2    # (DW_AT_location)
 289         .uleb128 0xa    # (DW_FORM_block1)
 290         .byte   0x0
 291         .byte   0x0
 292         .byte   0x0
 293         .section        .debug_pubnames,"",@progbits
 294         .long   0x1b    # Length of Public Names Info
 295         .value  0x2     # DWARF Version
 296         .long   .Ldebug_info0   # Offset of Compilation Unit Info
 297         .long   0xad    # Compilation Unit Length
 298         .long   0x8b    # DIE offset
 299         .ascii "fp\0"   # external name
 300         .long   0x9c    # DIE offset
 301         .ascii "c\0"    # external name
 302         .long   0x0
 303         .section        .debug_pubtypes,"",@progbits
 304         .long   0x1d    # Length of Public Type Names Info
 305         .value  0x2     # DWARF Version
 306         .long   .Ldebug_info0   # Offset of Compilation Unit Info
 307         .long   0xad    # Compilation Unit Length
 308         .long   0x25    # DIE offset
 309         .ascii "fp_t\0" # external name
 310         .long   0x6e    # DIE offset
 311         .ascii "C\0"    # external name
 312         .long   0x0
 313         .section        .debug_str,"MS",@progbits,1
 314 .LASF5:
 315         .string "fp_t"
 316 .LASF2:
 317         .string "GNU C++ 4.4.2 20091222 (Red Hat 4.4.2-20)"
 318 .LASF0:
 319         .string "__pfn"
 320 .LASF4:
 321         .string "gdb/testsuite"
 322 .LASF3:
 323         .string "gdb.dwarf2/member-ptr-forwardref.cc"
 324 .LASF1:
 325         .string "__delta"
 326         .ident  "GCC: (GNU) 4.4.2 20091222 (Red Hat 4.4.2-20)"
 327         .section        .note.GNU-stack,"",@progbits