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

   1 # Copyright 2019-2020 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 if {![dwarf2_support]} {
  30     return 0
  31 }
  32
  33 # The .c files use __attribute__.
  34 if [get_compiler_info] {
  35     return -1
  36 }
  37 if !$gcc_compiled {
  38     return 0
  39 }
  40
  41 standard_testfile dw2-inline-stepping.c dw2-inline-stepping.S
  42
  43 set asm_file [standard_output_file $srcfile2]
  44 Dwarf::assemble $asm_file {
  45     global srcdir subdir srcfile srcfile2
  46     declare_labels ranges_label lines_label foo_prog
  47
  48     lassign [function_range main [list ${srcdir}/${subdir}/$srcfile]] \
  49         main_start main_len
  50     set main_end "$main_start + $main_len"
  51     lassign [function_range bar [list ${srcdir}/${subdir}/$srcfile]] \
  52         bar_start bar_len
  53     set bar_end "$bar_start + $bar_len"
  54
  55     set call_line [gdb_get_line_number "main call foo"]
  56
  57     cu {} {
  58         compile_unit {
  59             {language @DW_LANG_C}
  60             {name dw2-inline-stepping.c}
  61             {low_pc 0 addr}
  62             {stmt_list ${lines_label} DW_FORM_sec_offset}
  63             {ranges ${ranges_label} DW_FORM_sec_offset}
  64         } {
  65             subprogram {
  66                 {external 1 flag}
  67                 {name bar}
  68                 {low_pc $bar_start addr}
  69                 {high_pc "$bar_start + $bar_len" addr}
  70             }
  71             foo_prog: subprogram {
  72                 {name foo}
  73                 {inline 3 data1}
  74             }
  75             subprogram {
  76                 {external 1 flag}
  77                 {name main}
  78                 {low_pc $main_start addr}
  79                 {high_pc "$main_start + $main_len" addr}
  80             } {
  81                 inlined_subroutine {
  82                     {abstract_origin %$foo_prog}
  83                     {low_pc main_label2 addr}
  84                     {high_pc main_label3 addr}
  85                     {call_file 1 data1}
  86                     {call_line $call_line data1}
  87                 }
  88             }
  89         }
  90     }
  91
  92     lines {version 2} lines_label {
  93         include_dir "${srcdir}/${subdir}"
  94         file_name "$srcfile" 1
  95
  96         program {
  97             {DW_LNE_set_address $main_start}
  98             {DW_LNS_advance_line [expr [gdb_get_line_number "main prologue"] - 1]}
  99             {DW_LNS_copy}
 100             {DW_LNE_set_address main_label}
 101             {DW_LNS_advance_line [expr [gdb_get_line_number "main set global_var"] - [gdb_get_line_number "main prologue"]]}
 102             {DW_LNS_copy}
 103             {DW_LNE_set_address main_label2}
 104             {DW_LNS_advance_line [expr [gdb_get_line_number "main call foo"] - [gdb_get_line_number "main set global_var"]]}
 105             {DW_LNS_copy}
 106             {DW_LNE_set_address main_label2}
 107             {DW_LNS_advance_line [expr [gdb_get_line_number "foo call bar"] - [gdb_get_line_number "main call foo"]]}
 108             {DW_LNS_copy}
 109             {DW_LNE_set_address $main_end}
 110             {DW_LNE_end_sequence}
 111
 112             {DW_LNE_set_address $bar_start}
 113             {DW_LNS_advance_line [expr [gdb_get_line_number "bar prologue"] - 1]}
 114             {DW_LNS_copy}
 115             {DW_LNE_set_address bar_label}
 116             {DW_LNS_advance_line [expr [gdb_get_line_number "bar return global_var"] - [gdb_get_line_number "bar prologue"]]}
 117             {DW_LNS_copy}
 118             {DW_LNE_set_address $bar_end}
 119             {DW_LNE_end_sequence}
 120         }
 121     }
 122
 123     ranges {is_64 [is_64_target]} {
 124         ranges_label: sequence {
 125             {range {${main_start}} ${main_end}}
 126             {range {${bar_start}} ${bar_end}}
 127         }
 128     }
 129 }
 130
 131 if { [prepare_for_testing "failed to prepare" ${testfile} \
 132           [list $srcfile $asm_file] {nodebug}] } {
 133     return -1
 134 }
 135
 136 if ![runto_main] {
 137     return -1
 138 }
 139
 140 set patterns [list "main call foo" \
 141                   "foo call bar" \
 142                   "bar return global_var"]
 143 foreach p $patterns {
 144     gdb_test "step" "/\\* $p \\*/" \
 145         "step to '$p'"
 146 }