gdb/testsuite/gdb.dwarf2/dw2-inline-stepping.exp

   1 # Copyright 2019-2023 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 # This test shows the importance of not corrupting the order of line
  17 # table information.  When multiple lines are given for the same
  18 # address the compiler usually lists these in the order in which we
  19 # would expect to encounter them.  When stepping through nested inline
  20 # frames the last line given for an address is assumed by GDB to be
  21 # the most inner frame, and this is what GDB displays.
  22 #
  23 # If we corrupt the order of the line table entries then GDB will
  24 # display the wrong line as being the inner most frame.
  25
  26 load_lib dwarf.exp
  27
  28 # This test can only be run on targets which support DWARF-2 and use gas.
  29 require dwarf2_support
  30
  31 # The .c files use __attribute__.
  32 require is_c_compiler_gcc
  33
  34 standard_testfile .c .S
  35
  36 set asm_file [standard_output_file $srcfile2]
  37 Dwarf::assemble $asm_file {
  38     global srcdir subdir srcfile srcfile2
  39     declare_labels ranges_label lines_label foo_prog
  40
  41     lassign [function_range main [list ${srcdir}/${subdir}/$srcfile]] \
  42         main_start main_len
  43     set main_end "$main_start + $main_len"
  44     lassign [function_range bar [list ${srcdir}/${subdir}/$srcfile]] \
  45         bar_start bar_len
  46     set bar_end "$bar_start + $bar_len"
  47
  48     set call_line [gdb_get_line_number "main call foo"]
  49
  50     cu {} {
  51         compile_unit {
  52             {language @DW_LANG_C}
  53             {name dw2-inline-stepping.c}
  54             {low_pc 0 addr}
  55             {stmt_list ${lines_label} DW_FORM_sec_offset}
  56             {ranges ${ranges_label} DW_FORM_sec_offset}
  57         } {
  58             subprogram {
  59                 {external 1 flag}
  60                 {name bar}
  61                 {low_pc $bar_start addr}
  62                 {high_pc "$bar_start + $bar_len" addr}
  63             }
  64             foo_prog: subprogram {
  65                 {name foo}
  66                 {inline 3 data1}
  67             }
  68             subprogram {
  69                 {external 1 flag}
  70                 {name main}
  71                 {low_pc $main_start addr}
  72                 {high_pc "$main_start + $main_len" addr}
  73             } {
  74                 inlined_subroutine {
  75                     {abstract_origin %$foo_prog}
  76                     {low_pc main_label2 addr}
  77                     {high_pc main_label3 addr}
  78                     {call_file 1 data1}
  79                     {call_line $call_line data1}
  80                 }
  81             }
  82         }
  83     }
  84
  85     lines {version 2} lines_label {
  86         include_dir "${srcdir}/${subdir}"
  87         file_name "$srcfile" 1
  88
  89         program {
  90             DW_LNE_set_address $main_start
  91             line [gdb_get_line_number "main prologue"]
  92             DW_LNS_copy
  93             DW_LNE_set_address main_label
  94             line [gdb_get_line_number "main set global_var"]
  95             DW_LNS_copy
  96             DW_LNE_set_address main_label2
  97             line [gdb_get_line_number "main call foo"]
  98             DW_LNS_copy
  99             DW_LNE_set_address main_label2
 100             line [gdb_get_line_number "foo call bar"]
 101             DW_LNS_copy
 102             DW_LNE_set_address $main_end
 103             DW_LNE_end_sequence
 104
 105             DW_LNE_set_address $bar_start
 106             line [gdb_get_line_number "bar prologue"]
 107             DW_LNS_copy
 108             DW_LNE_set_address bar_label
 109             line [gdb_get_line_number "bar return global_var"]
 110             DW_LNS_copy
 111             DW_LNE_set_address $bar_end
 112             DW_LNE_end_sequence
 113         }
 114     }
 115
 116     ranges {is_64 [is_64_target]} {
 117         ranges_label: sequence {
 118             range ${main_start} ${main_end}
 119             range ${bar_start} ${bar_end}
 120         }
 121     }
 122 }
 123
 124 if { [prepare_for_testing "failed to prepare" ${testfile} \
 125           [list $srcfile $asm_file] {nodebug}] } {
 126     return -1
 127 }
 128
 129 if ![runto_main] {
 130     return -1
 131 }
 132
 133 set patterns [list "main call foo" \
 134                   "foo call bar" \
 135                   "bar return global_var"]
 136 foreach p $patterns {
 137     gdb_test "step" "/\\* $p \\*/" \
 138         "step to '$p'"
 139 }