gdb/testsuite/gdb.dwarf2/pr13961.S

   1 /* Copyright 2012-2019 Free Software Foundation, Inc.
   2
   3    This program is free software; you can redistribute it and/or modify
   4    it under the terms of the GNU General Public License as published by
   5    the Free Software Foundation; either version 3 of the License, or
   6    (at your option) any later version.
   7
   8    This program is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11    GNU General Public License for more details.
  12
  13    You should have received a copy of the GNU General Public License
  14    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  15
  16 /* Testcase to exercise the code path in bug 13961.
  17
  18    Compiled from:
  19
  20    class foo
  21    {
  22     public:
  23      int bar;
  24    };
  25
  26    foo baz;
  27
  28    int
  29    main ()
  30    {
  31      return 0;
  32    }
  33
  34    And then manually edited to insert the necessary DW_AT_specification
  35    entries to trigger the desired code path.
  36    There's no real need to make this architecture-specific, so it has been
  37    further hand-edited to support that.
  38 */
  39
  40 #define CONCAT1(a, b) CONCAT2(a, b)
  41 #define CONCAT2(a, b) a ## b
  42
  43 #ifdef SYMBOL_PREFIX
  44 # define SYMBOL(str)     CONCAT1(SYMBOL_PREFIX, str)
  45 #else
  46 # define SYMBOL(str)     str
  47 #endif
  48
  49         .file   "pr13961.cc"
  50
  51         .globl  baz
  52         .data   /* Previously this used .bss, but it's not portable.  */
  53         .align 4
  54         .type   baz, %object
  55         .size   baz, 4
  56 baz:
  57 #if 0
  58         /* This is disabled because when it was accidentally left out it
  59            caused a segv when used with .gdb_index.  */
  60         .file   1 "foo.c"
  61         .loc    1 12 0
  62 #endif
  63         .zero   4
  64
  65         .text
  66 .Ltext0:
  67         .globl  SYMBOL(main)
  68         .type   SYMBOL(main), %function
  69 SYMBOL(main):
  70 .LFB0:
  71         .4byte 0
  72 .LFE0:
  73         .size   SYMBOL(main), .-SYMBOL(main)
  74 .Letext0:
  75
  76         .section        .debug_types,"",%progbits
  77 .Ldebug_types0:
  78         .4byte  .Ltu_end - .Ltu_start   /* Length of Compilation Unit Info */
  79 .Ltu_start:
  80         .2byte  0x4     /* DWARF version number */
  81         .4byte  .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
  82         .byte   0x4     /* Pointer Size (in bytes) */
  83         .byte   0x19    /* Type Signature */
  84         .byte   0x8b
  85         .byte   0x7e
  86         .byte   0xac
  87         .byte   0xce
  88         .byte   0xf1
  89         .byte   0x22
  90         .byte   0x90
  91         .4byte  .Ltu_class_type - .Ldebug_types0 /* Offset to Type DIE */
  92         .uleb128 0x1    /* (DIE (0x17) DW_TAG_type_unit) */
  93         .byte   0x4     /* DW_AT_language */
  94         .byte   0x73    /* DW_AT_GNU_odr_signature */
  95         .byte   0xea
  96         .byte   0x85
  97         .byte   0x23
  98         .byte   0x75
  99         .byte   0x8a
 100         .byte   0x7e
 101         .byte   0x87
 102         .4byte  .Ldebug_line0   /* DW_AT_stmt_list */
 103
 104         /* Manually inserted to have a DW_AT_specification refering to
 105            something and appearing ahead of it.  */
 106         .uleb128 0x8    /* DW_TAG_class_type */
 107         .4byte .Ltu_class_type - .Ldebug_types0
 108         /* End of manual insertion */
 109
 110 .Ltu_class_type:
 111         .uleb128 0x2    /* (DIE (0x25) DW_TAG_class_type) */
 112         .ascii "foo\0"  /* DW_AT_name */
 113         .byte   0x4     /* DW_AT_byte_size */
 114         .byte   0x1     /* DW_AT_decl_file (pr13961.cc) */
 115         .byte   0x1     /* DW_AT_decl_line */
 116         .4byte  0x3f    /* DW_AT_sibling */
 117         .uleb128 0x3    /* (DIE (0x31) DW_TAG_member) */
 118         .ascii "bar\0"  /* DW_AT_name */
 119         .byte   0x1     /* DW_AT_decl_file (pr13961.cc) */
 120         .byte   0x4     /* DW_AT_decl_line */
 121         .4byte  0x3f    /* DW_AT_type */
 122         .byte   0       /* DW_AT_data_member_location */
 123         .byte   0x1     /* DW_AT_accessibility */
 124         .byte   0       /* end of children of DIE 0x25 */
 125         .uleb128 0x4    /* (DIE (0x3f) DW_TAG_base_type) */
 126         .byte   0x4     /* DW_AT_byte_size */
 127         .byte   0x5     /* DW_AT_encoding */
 128         .ascii "int\0"  /* DW_AT_name */
 129         .byte   0       /* end of children of DIE 0x17 */
 130
 131 .Ltu_end:
 132
 133         .section        .debug_info,"",%progbits
 134 .Ldebug_info0:
 135         .4byte  .Lcu_end - .Lcu_start   /* Length of Compilation Unit Info */
 136 .Lcu_start:
 137         .2byte  0x4     /* DWARF version number */
 138         .4byte  .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
 139         .byte   0x4     /* Pointer Size (in bytes) */
 140         .uleb128 0x5    /* (DIE (0xb) DW_TAG_compile_unit) */
 141         .4byte  .LASF0  /* DW_AT_producer: "GNU C++ 4.6.3 20120306" */
 142         .byte   0x4     /* DW_AT_language */
 143         .4byte  .LASF1  /* DW_AT_name: "pr13961.cc" */
 144         .4byte  .LASF2  /* DW_AT_comp_dir: "." */
 145         .4byte  .Ltext0 /* DW_AT_low_pc */
 146         .4byte  .Letext0        /* DW_AT_high_pc */
 147         .4byte  .Ldebug_line0   /* DW_AT_stmt_list */
 148 .Lint_base_type:
 149         .uleb128 0x4    /* (DIE (0x25) DW_TAG_base_type) */
 150         .byte   0x4     /* DW_AT_byte_size */
 151         .byte   0x5     /* DW_AT_encoding */
 152         .ascii "int\0"  /* DW_AT_name */
 153         .uleb128 0x6    /* (DIE (0x2c) DW_TAG_subprogram) */
 154                         /* DW_AT_external */
 155         .4byte  .LASF3  /* DW_AT_name: "main" */
 156         .byte   0x1     /* DW_AT_decl_file (pr13961.cc) */
 157         .byte   0xa     /* DW_AT_decl_line */
 158         .4byte  0x25    /* DW_AT_type */
 159         .4byte  .LFB0   /* DW_AT_low_pc */
 160         .4byte  .LFE0   /* DW_AT_high_pc */
 161         .uleb128 0x1    /* DW_AT_frame_base */
 162         .byte   0x9c    /* DW_OP_call_frame_cfa */
 163                         /* DW_AT_GNU_all_call_sites */
 164         .uleb128 0x7    /* (DIE (0x41) DW_TAG_variable) */
 165         .ascii "baz\0"  /* DW_AT_name */
 166         .byte   0x1     /* DW_AT_decl_file (pr13961.cc) */
 167         .byte   0x7     /* DW_AT_decl_line */
 168         .byte   0x19    /* DW_AT_type */
 169         .byte   0x8b
 170         .byte   0x7e
 171         .byte   0xac
 172         .byte   0xce
 173         .byte   0xf1
 174         .byte   0x22
 175         .byte   0x90
 176                         /* DW_AT_external */
 177         .uleb128 0x5    /* DW_AT_location */
 178         .byte   0x3     /* DW_OP_addr */
 179         .4byte  baz
 180
 181         /* Manually inserted to have a DW_AT_specification refering to
 182            something and appearing ahead of it.  */
 183         .uleb128 0x8    /* DW_TAG_class_type */
 184         .4byte .Lcu_class_type - .Ldebug_info0 /* DW_AT_specification */
 185
 186 .Lcu_int_type:
 187         .uleb128 0x4    /* (DIE (0x3f) DW_TAG_base_type) */
 188         .byte   0x4     /* DW_AT_byte_size */
 189         .byte   0x5     /* DW_AT_encoding */
 190         .ascii "int\0"  /* DW_AT_name */
 191 .Lcu_class_type:
 192         .uleb128 0x2    /* (DIE (0x25) DW_TAG_class_type) */
 193         .ascii "foo2\0" /* DW_AT_name */
 194         .byte   0x4     /* DW_AT_byte_size */
 195         .byte   0x1     /* DW_AT_decl_file (pr13961.cc) */
 196         .byte   0x1     /* DW_AT_decl_line */
 197         .4byte  0x3f    /* DW_AT_sibling */
 198         .uleb128 0x3    /* (DIE (0x31) DW_TAG_member) */
 199         .ascii "bar\0"  /* DW_AT_name */
 200         .byte   0x1     /* DW_AT_decl_file (pr13961.cc) */
 201         .byte   0x4     /* DW_AT_decl_line */
 202         .4byte  .Lcu_int_type - .Ldebug_info0 /* DW_AT_type */
 203         .byte   0       /* DW_AT_data_member_location */
 204         .byte   0x1     /* DW_AT_accessibility */
 205         .byte   0       /* end of children of DIE 0x25 */
 206         .uleb128 0x4    /* (DIE (0x3f) DW_TAG_base_type) */
 207         .byte   0x4     /* DW_AT_byte_size */
 208         .byte   0x5     /* DW_AT_encoding */
 209         .ascii "int\0"  /* DW_AT_name */
 210         .byte   0       /* end of children of DIE 0x17 */
 211         /* End of manual insertion */
 212
 213         .byte   0       /* end of children of DIE 0xb */
 214
 215 .Lcu_end:
 216
 217         .section        .debug_abbrev,"",%progbits
 218 .Ldebug_abbrev0:
 219         .uleb128 0x1    /* (abbrev code) */
 220         .uleb128 0x41   /* (TAG: DW_TAG_type_unit) */
 221         .byte   0x1     /* DW_children_yes */
 222         .uleb128 0x13   /* (DW_AT_language) */
 223         .uleb128 0xb    /* (DW_FORM_data1) */
 224         .uleb128 0x210f /* (DW_AT_GNU_odr_signature) */
 225         .uleb128 0x7    /* (DW_FORM_data8) */
 226         .uleb128 0x10   /* (DW_AT_stmt_list) */
 227         .uleb128 0x17   /* (DW_FORM_sec_offset) */
 228         .byte   0
 229         .byte   0
 230         .uleb128 0x2    /* (abbrev code) */
 231         .uleb128 0x2    /* (TAG: DW_TAG_class_type) */
 232         .byte   0x1     /* DW_children_yes */
 233         .uleb128 0x3    /* (DW_AT_name) */
 234         .uleb128 0x8    /* (DW_FORM_string) */
 235         .uleb128 0xb    /* (DW_AT_byte_size) */
 236         .uleb128 0xb    /* (DW_FORM_data1) */
 237         .uleb128 0x3a   /* (DW_AT_decl_file) */
 238         .uleb128 0xb    /* (DW_FORM_data1) */
 239         .uleb128 0x3b   /* (DW_AT_decl_line) */
 240         .uleb128 0xb    /* (DW_FORM_data1) */
 241         .uleb128 0x1    /* (DW_AT_sibling) */
 242         .uleb128 0x13   /* (DW_FORM_ref4) */
 243         .byte   0
 244         .byte   0
 245         .uleb128 0x3    /* (abbrev code) */
 246         .uleb128 0xd    /* (TAG: DW_TAG_member) */
 247         .byte   0       /* DW_children_no */
 248         .uleb128 0x3    /* (DW_AT_name) */
 249         .uleb128 0x8    /* (DW_FORM_string) */
 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 0x49   /* (DW_AT_type) */
 255         .uleb128 0x13   /* (DW_FORM_ref4) */
 256         .uleb128 0x38   /* (DW_AT_data_member_location) */
 257         .uleb128 0xb    /* (DW_FORM_data1) */
 258         .uleb128 0x32   /* (DW_AT_accessibility) */
 259         .uleb128 0xb    /* (DW_FORM_data1) */
 260         .byte   0
 261         .byte   0
 262         .uleb128 0x4    /* (abbrev code) */
 263         .uleb128 0x24   /* (TAG: DW_TAG_base_type) */
 264         .byte   0       /* DW_children_no */
 265         .uleb128 0xb    /* (DW_AT_byte_size) */
 266         .uleb128 0xb    /* (DW_FORM_data1) */
 267         .uleb128 0x3e   /* (DW_AT_encoding) */
 268         .uleb128 0xb    /* (DW_FORM_data1) */
 269         .uleb128 0x3    /* (DW_AT_name) */
 270         .uleb128 0x8    /* (DW_FORM_string) */
 271         .byte   0
 272         .byte   0
 273         .uleb128 0x5    /* (abbrev code) */
 274         .uleb128 0x11   /* (TAG: DW_TAG_compile_unit) */
 275         .byte   0x1     /* DW_children_yes */
 276         .uleb128 0x25   /* (DW_AT_producer) */
 277         .uleb128 0xe    /* (DW_FORM_strp) */
 278         .uleb128 0x13   /* (DW_AT_language) */
 279         .uleb128 0xb    /* (DW_FORM_data1) */
 280         .uleb128 0x3    /* (DW_AT_name) */
 281         .uleb128 0xe    /* (DW_FORM_strp) */
 282         .uleb128 0x1b   /* (DW_AT_comp_dir) */
 283         .uleb128 0xe    /* (DW_FORM_strp) */
 284         .uleb128 0x11   /* (DW_AT_low_pc) */
 285         .uleb128 0x1    /* (DW_FORM_addr) */
 286         .uleb128 0x12   /* (DW_AT_high_pc) */
 287         .uleb128 0x1    /* (DW_FORM_addr) */
 288         .uleb128 0x10   /* (DW_AT_stmt_list) */
 289         .uleb128 0x17   /* (DW_FORM_sec_offset) */
 290         .byte   0
 291         .byte   0
 292         .uleb128 0x6    /* (abbrev code) */
 293         .uleb128 0x2e   /* (TAG: DW_TAG_subprogram) */
 294         .byte   0       /* DW_children_no */
 295         .uleb128 0x3f   /* (DW_AT_external) */
 296         .uleb128 0x19   /* (DW_FORM_flag_present) */
 297         .uleb128 0x3    /* (DW_AT_name) */
 298         .uleb128 0xe    /* (DW_FORM_strp) */
 299         .uleb128 0x3a   /* (DW_AT_decl_file) */
 300         .uleb128 0xb    /* (DW_FORM_data1) */
 301         .uleb128 0x3b   /* (DW_AT_decl_line) */
 302         .uleb128 0xb    /* (DW_FORM_data1) */
 303         .uleb128 0x49   /* (DW_AT_type) */
 304         .uleb128 0x13   /* (DW_FORM_ref4) */
 305         .uleb128 0x11   /* (DW_AT_low_pc) */
 306         .uleb128 0x1    /* (DW_FORM_addr) */
 307         .uleb128 0x12   /* (DW_AT_high_pc) */
 308         .uleb128 0x1    /* (DW_FORM_addr) */
 309         .uleb128 0x40   /* (DW_AT_frame_base) */
 310         .uleb128 0x18   /* (DW_FORM_exprloc) */
 311         .uleb128 0x2117 /* (DW_AT_GNU_all_call_sites) */
 312         .uleb128 0x19   /* (DW_FORM_flag_present) */
 313         .byte   0
 314         .byte   0
 315         .uleb128 0x7    /* (abbrev code) */
 316         .uleb128 0x34   /* (TAG: DW_TAG_variable) */
 317         .byte   0       /* DW_children_no */
 318         .uleb128 0x3    /* (DW_AT_name) */
 319         .uleb128 0x8    /* (DW_FORM_string) */
 320         .uleb128 0x3a   /* (DW_AT_decl_file) */
 321         .uleb128 0xb    /* (DW_FORM_data1) */
 322         .uleb128 0x3b   /* (DW_AT_decl_line) */
 323         .uleb128 0xb    /* (DW_FORM_data1) */
 324         .uleb128 0x49   /* (DW_AT_type) */
 325         .uleb128 0x20   /* (DW_FORM_ref_sig8) */
 326         .uleb128 0x3f   /* (DW_AT_external) */
 327         .uleb128 0x19   /* (DW_FORM_flag_present) */
 328         .uleb128 0x2    /* (DW_AT_location) */
 329         .uleb128 0x18   /* (DW_FORM_exprloc) */
 330         .byte   0
 331         .byte   0
 332
 333         /* Manually inserted.  */
 334         .uleb128 0x8            /* abbrev code */
 335         .uleb128 0x2            /* DW_TAG_class_type */
 336         .byte   0x0             /* DW_has_children_no */
 337         .uleb128 0x47           /* DW_AT_specification */
 338         .uleb128 0x13           /* DW_FORM_ref4 */
 339         .byte   0x0             /* Terminator */
 340         .byte   0x0             /* Terminator */
 341         /* End of manual insertion.  */
 342
 343         .byte   0
 344
 345         .section        .debug_aranges,"",%progbits
 346         .4byte  0x1c    /* Length of Address Ranges Info */
 347         .2byte  0x2     /* DWARF Version */
 348         .4byte  .Ldebug_info0   /* Offset of Compilation Unit Info */
 349         .byte   0x4     /* Size of Address */
 350         .byte   0       /* Size of Segment Descriptor */
 351         .2byte  0       /* Pad to 8 byte boundary */
 352         .2byte  0
 353         .4byte  .Ltext0 /* Address */
 354         .4byte  .Letext0-.Ltext0        /* Length */
 355         .4byte  0
 356         .4byte  0
 357
 358         .section        .debug_line,"",%progbits
 359 .Ldebug_line0:
 360
 361         .section        .debug_str,"MS",%progbits,1
 362 .LASF0:
 363         .string "GNU C++ 4.6.3 20120306"
 364 .LASF2:
 365         .string "."
 366 .LASF1:
 367         .string "pr13961.cc"
 368 .LASF3:
 369         .string "main"
 370