gdb/testsuite/gdb.dwarf2/dw2-basic.S

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2004-2019 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 /* Test a minimal file containing DWARF-2 information.  This test also
  19    serves as a skeleton for other DWARF-2 tests.  Most other tests will
  20    not be this extensively itemized and commented...  */
  21
  22 /* Dummy function to provide debug information for.  */
  23
  24         .text
  25 .Lbegin_text1:
  26         .globl func_cu1
  27         .type func_cu1, %function
  28 func_cu1:
  29 .Lbegin_func_cu1:
  30         .int 0
  31 .Lend_func_cu1:
  32         .size func_cu1, .-func_cu1
  33 .Lend_text1:
  34
  35 /* Debug information */
  36
  37         .section .debug_info
  38 .Lcu1_begin:
  39         /* CU header */
  40         .4byte  .Lcu1_end - .Lcu1_start         /* Length of Compilation Unit */
  41 .Lcu1_start:
  42         .2byte  2                               /* DWARF Version */
  43         .4byte  .Labbrev1_begin                 /* Offset into abbrev section */
  44         .byte   4                               /* Pointer size */
  45
  46         /* CU die */
  47         .uleb128 1                              /* Abbrev: DW_TAG_compile_unit */
  48         .4byte  .Lline1_begin                   /* DW_AT_stmt_list */
  49         .4byte  .Lend_text1                     /* DW_AT_high_pc */
  50         .4byte  .Lbegin_text1                   /* DW_AT_low_pc */
  51         .ascii  "file1.txt\0"                   /* DW_AT_name */
  52         .ascii  "GNU C 3.3.3\0"                 /* DW_AT_producer */
  53         .byte   1                               /* DW_AT_language (C) */
  54
  55         /* func_cu1 */
  56         .uleb128        2                       /* Abbrev: DW_TAG_subprogram */
  57         .byte           1                       /* DW_AT_external */
  58         .byte           1                       /* DW_AT_decl_file */
  59         .byte           2                       /* DW_AT_decl_line */
  60         .ascii          "func_cu1\0"            /* DW_AT_name */
  61         .4byte          .Ltype_int-.Lcu1_begin  /* DW_AT_type */
  62         .4byte          .Lbegin_func_cu1        /* DW_AT_low_pc */
  63         .4byte          .Lend_func_cu1          /* DW_AT_high_pc */
  64         .byte           1                       /* DW_AT_frame_base: length */
  65         .byte           0x55                    /* DW_AT_frame_base: DW_OP_reg5 */
  66
  67 .Ltype_int:
  68         .uleb128        3                       /* Abbrev: DW_TAG_base_type */
  69         .ascii          "int\0"                 /* DW_AT_name */
  70         .byte           4                       /* DW_AT_byte_size */
  71         .byte           5                       /* DW_AT_encoding */
  72
  73         .byte           0                       /* End of children of CU */
  74
  75 .Lcu1_end:
  76
  77 /* Abbrev table */
  78         .section .debug_abbrev
  79 .Labbrev1_begin:
  80         .uleb128        1                       /* Abbrev code */
  81         .uleb128        0x11                    /* DW_TAG_compile_unit */
  82         .byte           1                       /* has_children */
  83         .uleb128        0x10                    /* DW_AT_stmt_list */
  84         .uleb128        0x6                     /* DW_FORM_data4 */
  85         .uleb128        0x12                    /* DW_AT_high_pc */
  86         .uleb128        0x1                     /* DW_FORM_addr */
  87         .uleb128        0x11                    /* DW_AT_low_pc */
  88         .uleb128        0x1                     /* DW_FORM_addr */
  89         .uleb128        0x3                     /* DW_AT_name */
  90         .uleb128        0x8                     /* DW_FORM_string */
  91         .uleb128        0x25                    /* DW_AT_producer */
  92         .uleb128        0x8                     /* DW_FORM_string */
  93         .uleb128        0x13                    /* DW_AT_language */
  94         .uleb128        0xb                     /* DW_FORM_data1 */
  95         .byte           0x0                     /* Terminator */
  96         .byte           0x0                     /* Terminator */
  97
  98         .uleb128        2                       /* Abbrev code */
  99         .uleb128        0x2e                    /* DW_TAG_subprogram */
 100         .byte           0                       /* has_children */
 101         .uleb128        0x3f                    /* DW_AT_external */
 102         .uleb128        0xc                     /* DW_FORM_flag */
 103         .uleb128        0x3a                    /* DW_AT_decl_file */
 104         .uleb128        0xb                     /* DW_FORM_data1 */
 105         .uleb128        0x3b                    /* DW_AT_decl_line */
 106         .uleb128        0xb                     /* DW_FORM_data1 */
 107         .uleb128        0x3                     /* DW_AT_name */
 108         .uleb128        0x8                     /* DW_FORM_string */
 109         .uleb128        0x49                    /* DW_AT_type */
 110         .uleb128        0x13                    /* DW_FORM_ref4 */
 111         .uleb128        0x11                    /* DW_AT_low_pc */
 112         .uleb128        0x1                     /* DW_FORM_addr */
 113         .uleb128        0x12                    /* DW_AT_high_pc */
 114         .uleb128        0x1                     /* DW_FORM_addr */
 115         .uleb128        0x40                    /* DW_AT_frame_base */
 116         .uleb128        0xa                     /* DW_FORM_block1 */
 117         .byte           0x0                     /* Terminator */
 118         .byte           0x0                     /* Terminator */
 119
 120         .uleb128        3                       /* Abbrev code */
 121         .uleb128        0x24                    /* DW_TAG_base_type */
 122         .byte           0                       /* has_children */
 123         .uleb128        0x3                     /* DW_AT_name */
 124         .uleb128        0x8                     /* DW_FORM_string */
 125         .uleb128        0xb                     /* DW_AT_byte_size */
 126         .uleb128        0xb                     /* DW_FORM_data1 */
 127         .uleb128        0x3e                    /* DW_AT_encoding */
 128         .uleb128        0xb                     /* DW_FORM_data1 */
 129         .byte           0x0                     /* Terminator */
 130         .byte           0x0                     /* Terminator */
 131
 132         .byte           0x0                     /* Terminator */
 133         .byte           0x0                     /* Terminator */
 134
 135 /* Line table */
 136         .section .debug_line
 137 .Lline1_begin:
 138         .4byte          .Lline1_end - .Lline1_start     /* Initial length */
 139 .Lline1_start:
 140         .2byte          2                       /* Version */
 141         .4byte          .Lline1_lines - .Lline1_hdr     /* header_length */
 142 .Lline1_hdr:
 143         .byte           1                       /* Minimum insn length */
 144         .byte           1                       /* default_is_stmt */
 145         .byte           1                       /* line_base */
 146         .byte           1                       /* line_range */
 147         .byte           0x10                    /* opcode_base */
 148
 149         /* Standard lengths */
 150         .byte           0
 151         .byte           1
 152         .byte           1
 153         .byte           1
 154         .byte           1
 155         .byte           0
 156         .byte           0
 157         .byte           0
 158         .byte           1
 159         .byte           0
 160         .byte           0
 161         .byte           1
 162         .byte           0
 163         .byte           0
 164         .byte           0
 165
 166         /* Include directories */
 167         .byte           0
 168
 169         /* File names */
 170         .ascii          "file1.txt\0"
 171         .uleb128        0
 172         .uleb128        0
 173         .uleb128        0
 174
 175         .byte           0
 176
 177 .Lline1_lines:
 178         .byte           0       /* DW_LNE_set_address */
 179         .uleb128        5
 180         .byte           2
 181         .4byte          .Lbegin_func_cu1
 182
 183         .byte           3       /* DW_LNS_advance_line */
 184         .sleb128        3       /* ... to 4 */
 185
 186         .byte           1       /* DW_LNS_copy */
 187
 188         .byte           1       /* DW_LNS_copy (second time as an end-of-prologue marker) */
 189
 190         .byte           0       /* DW_LNE_set_address */
 191         .uleb128        5
 192         .byte           2
 193         .4byte          .Lend_func_cu1
 194
 195         .byte           0       /* DW_LNE_end_of_sequence */
 196         .uleb128        1
 197         .byte           1
 198
 199 .Lline1_end: