1# Copyright 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# Test unwinding when we have a frame inlined in the outer frame (in the sense 17# of frame.c:outer_frame_id). 18# 19# The conditions required to reproduce the original issue are: 20# 21# 1. Have an outer frame whose DWARF CFI explicitly says that the frame return 22# address is undefined. 23# 2. A frame inlined in this other frame. 24# 25# Because of (1), the test has to be written in assembly with explicit CFI 26# directives. 27 28load_lib dwarf.exp 29 30if {![dwarf2_support]} { 31 return 0 32} 33 34standard_testfile .S 35 36set dwarf_asm [standard_output_file dwarf-asm.S] 37Dwarf::assemble $dwarf_asm { 38 declare_labels foo_subprogram bar_subprogram 39 declare_labels stmt_list 40 41 # See the comment in the .S file for the equivalent C program this is meant 42 # to represent. 43 44 cu { addr_size 4 } { 45 DW_TAG_compile_unit { 46 {DW_AT_name file1.txt} 47 {DW_AT_stmt_list $stmt_list DW_FORM_sec_offset} 48 {DW_AT_language @DW_LANG_C99} 49 {DW_AT_low_pc __cu_low_pc DW_FORM_addr} 50 {DW_AT_high_pc __cu_high_pc DW_FORM_addr} 51 } { 52 DW_TAG_subprogram { 53 {DW_AT_name "_start"} 54 {DW_AT_low_pc __start_low_pc DW_FORM_addr} 55 {DW_AT_high_pc __start_high_pc DW_FORM_addr} 56 } { 57 DW_TAG_inlined_subroutine { 58 {DW_AT_abstract_origin :$foo_subprogram} 59 {DW_AT_low_pc __foo_low_pc DW_FORM_addr} 60 {DW_AT_high_pc __foo_high_pc DW_FORM_addr} 61 {DW_AT_call_file 1 DW_FORM_data1} 62 {DW_AT_call_line 13 DW_FORM_data1} 63 } { 64 DW_TAG_inlined_subroutine { 65 {DW_AT_abstract_origin :$bar_subprogram} 66 {DW_AT_low_pc __bar_low_pc DW_FORM_addr} 67 {DW_AT_high_pc __bar_high_pc DW_FORM_addr} 68 {DW_AT_call_file 1 DW_FORM_data1} 69 {DW_AT_call_line 7 DW_FORM_data1} 70 } 71 } 72 } 73 74 foo_subprogram: DW_TAG_subprogram { 75 {DW_AT_name "foo"} 76 {DW_AT_prototyped 1 DW_FORM_flag_present} 77 {DW_AT_inline 0x1 DW_FORM_data1} 78 } 79 80 bar_subprogram: DW_TAG_subprogram { 81 {DW_AT_name "bar"} 82 {DW_AT_prototyped 1 DW_FORM_flag_present} 83 {DW_AT_inline 0x1 DW_FORM_data1} 84 } 85 } 86 } 87 88 lines { } stmt_list { 89 global srcdir subdir srcfile 90 91 include_dir "/some/directory" 92 file_name "/some/directory/file.c" 0 93 } 94} 95 96if { [build_executable ${testfile}.exp ${testfile} "$srcfile $dwarf_asm" \ 97 {additional_flags=-nostdlib additional_flags=-static}] != 0 } { 98 untested "failed to compile" 99 return 100} 101 102clean_restart $binfile 103 104if { [gdb_starti_cmd] != 0 } { 105 fail "failed to run to first instruction" 106 return 107} 108gdb_test "" "Program stopped.*" "starti prompt" 109 110gdb_test "frame" "in _start .*" 111 112gdb_test "stepi" "in foo .*" "step into foo" 113gdb_test "stepi" "in bar .*" "step into bar" 114gdb_test "stepi" "in foo .*" "step back into foo" 115gdb_test "stepi" "in _start .*" "step back into _start" 116