| # Copyright 2007-2021 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/>. |
| |
| # Please email any bugs, comments, and/or additions to this file to: |
| # bug-gdb@gnu.org |
| |
| # This file is part of the gdb testsuite. |
| |
| # Unwinding of DW_CFA_GNU_negative_offset_extended test program. |
| |
| # Test i386 unwinder. |
| |
| |
| if { ![is_x86_like_target] } then { |
| verbose "Skipping i386 unwinder tests." |
| return |
| } |
| |
| set testfile "i386-gnu-cfi" |
| set srcfilec ${testfile}.c |
| set srcfileasm ${testfile}-asm.S |
| set binfile [standard_output_file ${testfile}] |
| |
| # some targets have leading underscores on assembly symbols. |
| set additional_flags [gdb_target_symbol_prefix_flags] |
| |
| if { [gdb_compile "${srcdir}/${subdir}/${srcfilec} ${srcdir}/${subdir}/${srcfileasm}" "${binfile}" executable [list debug $additional_flags]] != "" } { |
| untested "failed to compile" |
| return -1 |
| } |
| |
| # Get things started. |
| |
| gdb_exit |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load ${binfile} |
| |
| # We should stop in abort(3). |
| |
| gdb_run_cmd |
| |
| gdb_test_multiple {} "continue to abort()" { |
| -re ".*Program received signal SIGABRT,.*$gdb_prompt $" { |
| pass "continue to abort()" |
| } |
| } |
| |
| # Verify that the backtrace works (it would crash before). Use the backtrace |
| # output to find the frame number for function "gate". |
| set gate_n "" |
| set backtrace_re \ |
| [multi_line \ |
| "" \ |
| "#($decimal) *$hex in gate \[^\r\n\]*" \ |
| "#$decimal *$hex in main \\(\\) at .*${testfile}.c.*"] |
| gdb_test_multiple "backtrace" "" { |
| -re -wrap $backtrace_re { |
| set gate_n $expect_out(1,string) |
| pass $gdb_test_name |
| } |
| } |
| if { $gate_n == "" } { |
| return -1 |
| } |
| |
| # Check we see the inserted `DW_CFA_GNU_negative_offset_extended' CFI. |
| # We see there the original CFI-stored filename `gate.c'. |
| |
| gdb_test "frame $gate_n" \ |
| "gate \\(\[^()\]*\\) at .*gate.c.*" \ |
| "shift up to the modified frame" |
| |
| gdb_test_multiple "info frame" "existence of the CFI inserted register" { |
| -re "Stack level $gate_n, frame at (0x\[0-9a-f\]+):.*Saved registers:.* ecx at (0x\[0-9a-f\]+),.*" { |
| pass "existence of the CFI inserted register" |
| if { [string compare $expect_out(1,string) $expect_out(2,string)] } then { |
| fail "value of the CFI inserted register" |
| } else { |
| pass "value of the CFI inserted register" |
| } |
| } |
| } |