| # Copyright 2008-2021 Free Software Foundation, Inc. |
| |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| load_lib dwarf.exp |
| |
| # This test can only be run on targets which support DWARF-2 and use gas. |
| if {![dwarf2_support]} { |
| return 0 |
| } |
| |
| standard_testfile .S -func.c -main.c |
| lassign [function_range func_nofb \ |
| "${srcdir}/${subdir}/${srcfile2} ${srcdir}/${subdir}/${srcfile3}"] \ |
| func_nofb_start func_nofb_len |
| lassign [function_range func_loopfb \ |
| "${srcdir}/${subdir}/${srcfile2} ${srcdir}/${subdir}/${srcfile3}"] \ |
| func_loopfb_start func_loopfb_len |
| |
| set flags \ |
| [list \ |
| "additional_flags=\"-DFUNC_NOFB_START=$func_nofb_start\"" \ |
| "additional_flags=\"-DFUNC_NOFB_END=$func_nofb_start + $func_nofb_len\"" \ |
| "additional_flags=\"-DFUNC_LOOPFB_START=$func_loopfb_start\"" \ |
| "additional_flags=\"-DFUNC_LOOPFB_END=$func_loopfb_start + $func_loopfb_len\""] |
| set executable ${testfile} |
| |
| if { [prepare_for_testing_full "failed to prepare" \ |
| [list $testfile {} \ |
| $srcfile [concat $flags {nodebug}] \ |
| $srcfile2 {nodebug} \ |
| $srcfile3 {debug}]] == -1 } { |
| return -1 |
| } |
| |
| # First try referencing DW_AT_frame_base which is not defined. |
| if [runto func_nofb] { |
| gdb_test "p func_nofb_var" {Could not find the frame base for "func_nofb".} "func_nofb print" |
| gdb_test "bt full" " in main .* main_var = 1" "func_nofb backtrace" |
| } |
| |
| # GDB could have crashed. |
| clean_restart $executable |
| |
| # And now try referencing DW_AT_frame_base defined using a self-reference |
| # (DW_OP_fbreg). |
| if [runto func_loopfb] { |
| gdb_test "p func_loopfb_var" "DWARF-2 expression error: Loop detected .*" "func_loopfb print" |
| gdb_test "bt full" " in main .* main_var = 1" "func_loopfb backtrace" |
| } |