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

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2010-2014 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         .data
  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         .4byte  0xa9    /* Length of Compilation Unit Info */
  60         .2byte  0x3     /* DWARF version number */
  61         .4byte  .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
  62         .byte   0x4     /* Pointer Size (in bytes) */
  63         .uleb128 0x1    /* (DIE (0xb) DW_TAG_compile_unit) */
  64         .4byte  .LASF2  /* DW_AT_producer: "GNU C++ 4.4.2 20091222 (Red Hat 4.4.2-20)" */
  65         .byte   0x4     /* DW_AT_language */
  66         .4byte  .LASF3  /* DW_AT_name: "gdb.dwarf2/member-ptr-forwardref.cc" */
  67         .4byte  .LASF4  /* DW_AT_comp_dir: "gdb/testsuite" */
  68         .4byte  .Ltext0 /* DW_AT_low_pc */
  69         .4byte  .Letext0        /* DW_AT_high_pc */
  70         .4byte  .Ldebug_line0   /* DW_AT_stmt_list */
  71         .uleb128 0x2    /* (DIE (0x25) DW_TAG_typedef) */
  72         .4byte  .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         .4byte  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         .4byte  0x51    /* DW_AT_sibling */
  81         .uleb128 0x4    /* (DIE (0x38) DW_TAG_member) */
  82         .4byte  .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         .4byte  0x85    /* DW_AT_type */
  86         .sleb128 0      /* DW_AT_data_member_location */
  87         .uleb128 0x4    /* (DIE (0x44) DW_TAG_member) */
  88         .4byte  .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         .4byte  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         .4byte  0x61    /* DW_AT_type */
  96         .4byte  0x61    /* DW_AT_sibling */
  97         .uleb128 0x6    /* (DIE (0x5a) DW_TAG_formal_parameter) */
  98         .4byte  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         .4byte  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         .4byte  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         .4byte  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         .4byte  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         .4byte  0x25    /* DW_AT_type */
 130         .byte   0x1     /* DW_AT_external */
 131         .byte   0x5     /* DW_AT_location */
 132         .byte   0x3     /* DW_OP_addr */
 133         .4byte  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         .4byte  0x6e    /* DW_AT_type */
 139         .byte   0x1     /* DW_AT_external */
 140         .byte   0x5     /* DW_AT_location */
 141         .byte   0x3     /* DW_OP_addr */
 142         .4byte  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         .4byte  0x1b    /* Length of Public Names Info */
 295         .2byte  0x2     /* DWARF Version */
 296         .4byte  .Ldebug_info0   /* Offset of Compilation Unit Info */
 297         .4byte  0xad    /* Compilation Unit Length */
 298         .4byte  0x8b    /* DIE offset */
 299         .ascii "fp\0"   /* external name */
 300         .4byte  0x9c    /* DIE offset */
 301         .ascii "c\0"    /* external name */
 302         .4byte  0x0
 303         .section        .debug_pubtypes,"",%progbits
 304         .4byte  0x1d    /* Length of Public Type Names Info */
 305         .2byte  0x2     /* DWARF Version */
 306         .4byte  .Ldebug_info0   /* Offset of Compilation Unit Info */
 307         .4byte  0xad    /* Compilation Unit Length */
 308         .4byte  0x25    /* DIE offset */
 309         .ascii "fp_t\0" /* external name */
 310         .4byte  0x6e    /* DIE offset */
 311         .ascii "C\0"    /* external name */
 312         .4byte  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