gdb/testsuite/gdb.dwarf2/dw2-skip-prologue.S

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2011-2019 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 #if PTRBITS == 64
  19 # define PTRBYTE .8byte
  20 #elif PTRBITS == 32
  21 # define PTRBYTE .4byte
  22 #else
  23 # error "Unsupported pointer size"
  24 #endif
  25
  26         .section .debug_info
  27 .Lcu1_begin:
  28         /* CU header */
  29         .4byte  .Lcu1_end - .Lcu1_start         /* Length of Compilation Unit */
  30 .Lcu1_start:
  31         .2byte  2                               /* DWARF Version */
  32         .4byte  .Labbrev1_begin                 /* Offset into abbrev section */
  33         .byte   PTRBITS / 8                     /* Pointer size */
  34
  35         /* CU die */
  36         .uleb128 1                              /* Abbrev: DW_TAG_compile_unit */
  37         .4byte  .Lline1_begin                   /* DW_AT_stmt_list */
  38         PTRBYTE func_start                      /* DW_AT_low_pc */
  39         PTRBYTE func_end                        /* DW_AT_high_pc */
  40         .ascii  "main.c\0"                      /* DW_AT_name */
  41         .ascii  "GNU C 4.5.0\0"                 /* DW_AT_producer must be >= 4.5  */
  42         .byte   2                               /* DW_AT_language (DW_LANG_C) */
  43
  44         .uleb128        2                       /* Abbrev: DW_TAG_subprogram */
  45         .byte           1                       /* DW_AT_external */
  46         .ascii          "func\0"                /* DW_AT_name */
  47         .4byte          .Ltype_int-.Lcu1_begin  /* DW_AT_type */
  48         PTRBYTE         func_start              /* DW_AT_low_pc */
  49         PTRBYTE         func_end                /* DW_AT_high_pc */
  50
  51 /* GDB `has_loclist' detection of -O2 -g code needs to see a DW_AT_location
  52    location list.  There may exist -O2 -g CUs still not needing/using any such
  53    location list - exactly like this CU.  Make one up.  */
  54
  55         .uleb128        0x7                     /* (DIE (0x42) DW_TAG_formal_parameter) */
  56         .ascii          "param\0"               /* DW_AT_name */
  57         .4byte          .Ltype_int - .Lcu1_begin        /* DW_AT_type */
  58         .4byte          loclist                 /* DW_AT_location */
  59
  60         .uleb128        4                       /* Abbrev: DW_TAG_inlined_subroutine */
  61         .ascii          "inlined\0"             /* DW_AT_name */
  62         PTRBYTE         func0                   /* DW_AT_low_pc */
  63         PTRBYTE         func1                   /* DW_AT_high_pc */
  64         .byte           3                       /* DW_AT_inline (DW_INL_declared_inlined) */
  65         .byte           1                       /* DW_AT_call_file */
  66         .byte           8                       /* DW_AT_call_line */
  67
  68         .uleb128        4                       /* Abbrev: DW_TAG_inlined_subroutine */
  69         .ascii          "inlined2\0"            /* DW_AT_name */
  70         PTRBYTE         func2                   /* DW_AT_low_pc */
  71         PTRBYTE         func3                   /* DW_AT_high_pc */
  72         .byte           3                       /* DW_AT_inline (DW_INL_declared_inlined) */
  73         .byte           1                       /* DW_AT_call_file */
  74         .byte           11                      /* DW_AT_call_line */
  75
  76 #ifdef INLINED
  77         .uleb128        4                       /* Abbrev: DW_TAG_inlined_subroutine */
  78         .ascii          "otherinline\0"         /* DW_AT_name */
  79         PTRBYTE         func3                   /* DW_AT_low_pc */
  80         PTRBYTE         func_end                /* DW_AT_high_pc */
  81         .byte           3                       /* DW_AT_inline (DW_INL_declared_inlined) */
  82         .byte           1                       /* DW_AT_call_file */
  83         .byte           9                       /* DW_AT_call_line */
  84 #endif
  85
  86 #ifdef LEXICAL
  87         .uleb128        5                       /* Abbrev: DW_TAG_lexical_block */
  88         PTRBYTE         func3                   /* DW_AT_low_pc */
  89         PTRBYTE         func_end                /* DW_AT_high_pc */
  90
  91         /* GDB would otherwise ignore the DW_TAG_lexical_block.  */
  92         .uleb128        6                       /* Abbrev: DW_TAG_variable */
  93         .ascii          "lexicalvar\0"          /* DW_AT_name */
  94         .4byte          .Ltype_int-.Lcu1_begin  /* DW_AT_type */
  95
  96         .byte           0                       /* End of children of DW_TAG_lexical_block */
  97 #endif
  98
  99         .byte           0                       /* End of children of DW_TAG_subprogram */
 100
 101 /* Simulate `fund' is also named `func' so that the function name matches and
 102    fund's SAL is not discarded in expand_line_sal_maybe.  */
 103
 104         .uleb128        2                       /* Abbrev: DW_TAG_subprogram */
 105         .byte           1                       /* DW_AT_external */
 106         .ascii          "func\0"                /* DW_AT_name */
 107         .4byte          .Ltype_int-.Lcu1_begin  /* DW_AT_type */
 108         PTRBYTE         fund_start              /* DW_AT_low_pc */
 109         PTRBYTE         fund_end                /* DW_AT_high_pc */
 110
 111         .byte           0                       /* End of children of DW_TAG_subprogram */
 112
 113 .Ltype_int:
 114         .uleb128        3                       /* Abbrev: DW_TAG_base_type */
 115         .ascii          "int\0"                 /* DW_AT_name */
 116         .byte           4                       /* DW_AT_byte_size */
 117         .byte           5                       /* DW_AT_encoding */
 118
 119         .byte           0                       /* End of children of CU */
 120
 121 .Lcu1_end:
 122
 123         .section        .debug_loc
 124 loclist:
 125         /* Reset the location list base address first.  */
 126         PTRBYTE         -1, 0
 127
 128         PTRBYTE         func_start, func_end
 129         .2byte          2f-1f
 130 1:      .byte           0x50    /* DW_OP_reg0 */
 131 2:
 132         /* Location list end.  */
 133         .4byte  0, 0
 134
 135 /* Abbrev table */
 136         .section .debug_abbrev
 137 .Labbrev1_begin:
 138         .uleb128        1                       /* Abbrev code */
 139         .uleb128        0x11                    /* DW_TAG_compile_unit */
 140         .byte           1                       /* has_children */
 141         .uleb128        0x10                    /* DW_AT_stmt_list */
 142         .uleb128        0x6                     /* DW_FORM_data4 */
 143         .uleb128        0x11                    /* DW_AT_low_pc */
 144         .uleb128        0x1                     /* DW_FORM_addr */
 145         .uleb128        0x12                    /* DW_AT_high_pc */
 146         .uleb128        0x1                     /* DW_FORM_addr */
 147         .uleb128        0x3                     /* DW_AT_name */
 148         .uleb128        0x8                     /* DW_FORM_string */
 149         .uleb128        0x25                    /* DW_AT_producer */
 150         .uleb128        0x8                     /* DW_FORM_string */
 151         .uleb128        0x13                    /* DW_AT_language */
 152         .uleb128        0xb                     /* DW_FORM_data1 */
 153         .byte           0x0                     /* Terminator */
 154         .byte           0x0                     /* Terminator */
 155
 156         .uleb128        2                       /* Abbrev code */
 157         .uleb128        0x2e                    /* DW_TAG_subprogram */
 158         .byte           1                       /* has_children */
 159         .uleb128        0x3f                    /* DW_AT_external */
 160         .uleb128        0xc                     /* DW_FORM_flag */
 161         .uleb128        0x3                     /* DW_AT_name */
 162         .uleb128        0x8                     /* DW_FORM_string */
 163         .uleb128        0x49                    /* DW_AT_type */
 164         .uleb128        0x13                    /* DW_FORM_ref4 */
 165         .uleb128        0x11                    /* DW_AT_low_pc */
 166         .uleb128        0x1                     /* DW_FORM_addr */
 167         .uleb128        0x12                    /* DW_AT_high_pc */
 168         .uleb128        0x1                     /* DW_FORM_addr */
 169         .byte           0x0                     /* Terminator */
 170         .byte           0x0                     /* Terminator */
 171
 172         .uleb128        3                       /* Abbrev code */
 173         .uleb128        0x24                    /* DW_TAG_base_type */
 174         .byte           0                       /* has_children */
 175         .uleb128        0x3                     /* DW_AT_name */
 176         .uleb128        0x8                     /* DW_FORM_string */
 177         .uleb128        0xb                     /* DW_AT_byte_size */
 178         .uleb128        0xb                     /* DW_FORM_data1 */
 179         .uleb128        0x3e                    /* DW_AT_encoding */
 180         .uleb128        0xb                     /* DW_FORM_data1 */
 181         .byte           0x0                     /* Terminator */
 182         .byte           0x0                     /* Terminator */
 183
 184         .uleb128        4                       /* Abbrev code */
 185         .uleb128        0x1d                    /* DW_TAG_inlined_subroutine */
 186         .byte           0                       /* has_children */
 187         .uleb128        0x3                     /* DW_AT_name */
 188         .uleb128        0x8                     /* DW_FORM_string */
 189         .uleb128        0x11                    /* DW_AT_low_pc */
 190         .uleb128        0x1                     /* DW_FORM_addr */
 191         .uleb128        0x12                    /* DW_AT_high_pc */
 192         .uleb128        0x1                     /* DW_FORM_addr */
 193         .uleb128        0x20                    /* DW_AT_inline */
 194         .uleb128        0xb                     /* DW_FORM_data1 */
 195         .uleb128        0x58                    /* DW_AT_call_file */
 196         .uleb128        0xb                     /* DW_FORM_data1 */
 197         .uleb128        0x59                    /* DW_AT_call_line */
 198         .uleb128        0xb                     /* DW_FORM_data1 */
 199         .byte           0x0                     /* Terminator */
 200         .byte           0x0                     /* Terminator */
 201
 202         .uleb128        5                       /* Abbrev code */
 203         .uleb128        0x0b                    /* DW_TAG_lexical_block */
 204         .byte           1                       /* has_children */
 205         .uleb128        0x11                    /* DW_AT_low_pc */
 206         .uleb128        0x1                     /* DW_FORM_addr */
 207         .uleb128        0x12                    /* DW_AT_high_pc */
 208         .uleb128        0x1                     /* DW_FORM_addr */
 209         .byte           0x0                     /* Terminator */
 210         .byte           0x0                     /* Terminator */
 211
 212         .uleb128        6                       /* Abbrev code */
 213         .uleb128        0x34                    /* DW_TAG_variable */
 214         .byte           0                       /* has_children */
 215         .uleb128        0x3                     /* DW_AT_name */
 216         .uleb128        0x8                     /* DW_FORM_string */
 217         .uleb128        0x49                    /* DW_AT_type */
 218         .uleb128        0x13                    /* DW_FORM_ref4 */
 219         .byte           0x0                     /* Terminator */
 220         .byte           0x0                     /* Terminator */
 221
 222         .uleb128        0x7                     /* (abbrev code) */
 223         .uleb128        0x5                     /* (TAG: DW_TAG_formal_parameter) */
 224         .byte           0x0                     /* DW_children_no */
 225         .uleb128        0x3                     /* DW_AT_name */
 226         .uleb128        0x8                     /* DW_FORM_string */
 227         .uleb128        0x49                    /* (DW_AT_type) */
 228         .uleb128        0x13                    /* (DW_FORM_ref4) */
 229         .uleb128        0x02                    /* (DW_AT_location) */
 230         .uleb128        0x06                    /* (DW_FORM_data4) */
 231         .byte           0x0
 232         .byte           0x0
 233
 234         .byte           0x0                     /* Terminator */
 235         .byte           0x0                     /* Terminator */
 236
 237 /* Line table */
 238         .section .debug_line
 239 .Lline1_begin:
 240         .4byte          .Lline1_end - .Lline1_start     /* Initial length */
 241 .Lline1_start:
 242         .2byte          2                       /* Version */
 243         .4byte          .Lline1_lines - .Lline1_hdr     /* header_length */
 244 .Lline1_hdr:
 245         .byte           1                       /* Minimum insn length */
 246         .byte           1                       /* default_is_stmt */
 247         .byte           1                       /* line_base */
 248         .byte           1                       /* line_range */
 249         .byte           0x10                    /* opcode_base */
 250
 251         /* Standard lengths */
 252         .byte           0
 253         .byte           1
 254         .byte           1
 255         .byte           1
 256         .byte           1
 257         .byte           0
 258         .byte           0
 259         .byte           0
 260         .byte           1
 261         .byte           0
 262         .byte           0
 263         .byte           1
 264         .byte           0
 265         .byte           0
 266         .byte           0
 267
 268         /* Include directories */
 269         .byte           0
 270
 271         /* File names */
 272         .ascii          "main.c\0"
 273         .uleb128        0
 274         .uleb128        0
 275         .uleb128        0
 276
 277         .ascii          "other.c\0"
 278         .uleb128        0
 279         .uleb128        0
 280         .uleb128        0
 281
 282         .byte           0
 283
 284 .Lline1_lines:
 285         .byte           0       /* DW_LNE_set_address */
 286         .uleb128        5
 287         .byte           2
 288         PTRBYTE         func_start
 289         .byte           3       /* DW_LNS_advance_line */
 290         .sleb128        4       /* ... to 5 */
 291         .byte           1       /* DW_LNS_copy */
 292
 293         .byte           0       /* DW_LNE_set_address */
 294         .uleb128        5
 295         .byte           2
 296         PTRBYTE         func0
 297         .byte           4       /* DW_LNS_set_file */
 298         .uleb128        2
 299         .byte           3       /* DW_LNS_advance_line */
 300         .sleb128        -4      /* ... to 1 */
 301         .byte           1       /* DW_LNS_copy */
 302
 303         .byte           0       /* DW_LNE_set_address */
 304         .uleb128        5
 305         .byte           2
 306         PTRBYTE         func1
 307         .byte           4       /* DW_LNS_set_file */
 308         .uleb128        1
 309         .byte           3       /* DW_LNS_advance_line */
 310         .sleb128        8       /* ... to 9 */
 311         .byte           1       /* DW_LNS_copy */
 312
 313         .byte           0       /* DW_LNE_set_address */
 314         .uleb128        5
 315         .byte           2
 316         PTRBYTE         func2
 317         .byte           4       /* DW_LNS_set_file */
 318         .uleb128        2
 319         .byte           3       /* DW_LNS_advance_line */
 320         .sleb128        -8      /* ... to 1 */
 321         .byte           1       /* DW_LNS_copy */
 322
 323         .byte           0       /* DW_LNE_set_address */
 324         .uleb128        5
 325         .byte           2
 326         PTRBYTE         func3
 327         .byte           4       /* DW_LNS_set_file */
 328         .uleb128        1
 329         .byte           3       /* DW_LNS_advance_line */
 330         .sleb128        8       /* ... to 9 */
 331         .byte           1       /* DW_LNS_copy */
 332
 333         .byte           0       /* DW_LNE_set_address */
 334         .uleb128        5
 335         .byte           2
 336         PTRBYTE         func_end
 337
 338 /* Equivalent copy but renamed s/func/fund/.  */
 339
 340         .byte           0       /* DW_LNE_set_address */
 341         .uleb128        5
 342         .byte           2
 343         PTRBYTE         fund_start
 344         .byte           3       /* DW_LNS_advance_line */
 345         .sleb128        -4      /* ... to 5 */
 346         .byte           1       /* DW_LNS_copy */
 347
 348         .byte           0       /* DW_LNE_set_address */
 349         .uleb128        5
 350         .byte           2
 351         PTRBYTE         fund0
 352         .byte           4       /* DW_LNS_set_file */
 353         .uleb128        2
 354         .byte           3       /* DW_LNS_advance_line */
 355         .sleb128        -4      /* ... to 1 */
 356         .byte           1       /* DW_LNS_copy */
 357
 358         .byte           0       /* DW_LNE_set_address */
 359         .uleb128        5
 360         .byte           2
 361         PTRBYTE         fund1
 362         .byte           4       /* DW_LNS_set_file */
 363         .uleb128        1
 364         .byte           3       /* DW_LNS_advance_line */
 365         .sleb128        8       /* ... to 9 */
 366         .byte           1       /* DW_LNS_copy */
 367
 368         .byte           0       /* DW_LNE_set_address */
 369         .uleb128        5
 370         .byte           2
 371         PTRBYTE         fund2
 372         .byte           4       /* DW_LNS_set_file */
 373         .uleb128        2
 374         .byte           3       /* DW_LNS_advance_line */
 375         .sleb128        -8      /* ... to 1 */
 376         .byte           1       /* DW_LNS_copy */
 377
 378         .byte           0       /* DW_LNE_set_address */
 379         .uleb128        5
 380         .byte           2
 381         PTRBYTE         fund3
 382         .byte           4       /* DW_LNS_set_file */
 383         .uleb128        1
 384         .byte           3       /* DW_LNS_advance_line */
 385         .sleb128        8       /* ... to 9 */
 386         .byte           1       /* DW_LNS_copy */
 387
 388         .byte           0       /* DW_LNE_set_address */
 389         .uleb128        5
 390         .byte           2
 391         PTRBYTE         fund_end
 392
 393 /* Line numbering end.  */
 394
 395         .byte           0       /* DW_LNE_end_of_sequence */
 396         .uleb128        1
 397         .byte           1
 398
 399 .Lline1_end: