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When running test-case gdb.arch/i386-gnu-cfi.exp with target board unix/-m32, I get: ... (gdb) up 3^M 79 abort.c: No such file or directory.^M (gdb) FAIL: gdb.arch/i386-gnu-cfi.exp: shift up to the modified frame ... The preceding backtrace looks like this: ... (gdb) bt^M #0 0xf7fcf549 in __kernel_vsyscall ()^M #1 0xf7ce8896 in __libc_signal_restore_set (set=0xffffc3bc) at \ ../sysdeps/unix/sysv/linux/internal-signals.h:104^M #2 __GI_raise (sig=6) at ../sysdeps/unix/sysv/linux/raise.c:47^M #3 0xf7cd0314 in __GI_abort () at abort.c:79^M #4 0x0804919f in gate (gate=0x8049040 <abort@plt>, data=0x0) at gate.c:3^M #5 0x08049176 in main () at i386-gnu-cfi.c:27^M ... with function gate at position #4, while on another system where the test passes, I see instead function gate at position #3. Fix this by capturing the position of function gate in the backtrace, and using that in the rest of the test instead of hardcoded constant 3. Tested on x86_64-linux. gdb/testsuite/ChangeLog: 2021-01-28 Tom de Vries <tdevries@suse.de> * gdb.arch/i386-gnu-cfi.exp: Capture the position of function gate in the backtrace, and use that in the rest of the test instead of hardcoded constant 3. Use "frame" instead of "up" for robustness.
96 lines
2.8 KiB
Plaintext
96 lines
2.8 KiB
Plaintext
# Copyright 2007-2021 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Please email any bugs, comments, and/or additions to this file to:
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# bug-gdb@gnu.org
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# This file is part of the gdb testsuite.
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# Unwinding of DW_CFA_GNU_negative_offset_extended test program.
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# Test i386 unwinder.
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if { ![is_x86_like_target] } then {
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verbose "Skipping i386 unwinder tests."
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return
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}
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set testfile "i386-gnu-cfi"
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set srcfilec ${testfile}.c
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set srcfileasm ${testfile}-asm.S
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set binfile [standard_output_file ${testfile}]
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# some targets have leading underscores on assembly symbols.
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set additional_flags [gdb_target_symbol_prefix_flags]
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if { [gdb_compile "${srcdir}/${subdir}/${srcfilec} ${srcdir}/${subdir}/${srcfileasm}" "${binfile}" executable [list debug $additional_flags]] != "" } {
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untested "failed to compile"
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return -1
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}
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# Get things started.
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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# We should stop in abort(3).
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gdb_run_cmd
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gdb_test_multiple {} "continue to abort()" {
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-re ".*Program received signal SIGABRT,.*$gdb_prompt $" {
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pass "continue to abort()"
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}
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}
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# Verify that the backtrace works (it would crash before). Use the backtrace
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# output to find the frame number for function "gate".
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set gate_n ""
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set backtrace_re \
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[multi_line \
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"" \
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"#($decimal) *$hex in gate \[^\r\n\]*" \
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"#$decimal *$hex in main \\(\\) at .*${testfile}.c.*"]
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gdb_test_multiple "backtrace" "" {
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-re -wrap $backtrace_re {
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set gate_n $expect_out(1,string)
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pass $gdb_test_name
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}
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}
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if { $gate_n == "" } {
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return -1
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}
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# Check we see the inserted `DW_CFA_GNU_negative_offset_extended' CFI.
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# We see there the original CFI-stored filename `gate.c'.
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gdb_test "frame $gate_n" \
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"gate \\(\[^()\]*\\) at .*gate.c.*" \
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"shift up to the modified frame"
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gdb_test_multiple "info frame" "existence of the CFI inserted register" {
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-re "Stack level $gate_n, frame at (0x\[0-9a-f\]+):.*Saved registers:.* ecx at (0x\[0-9a-f\]+),.*" {
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pass "existence of the CFI inserted register"
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if { [string compare $expect_out(1,string) $expect_out(2,string)] } then {
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fail "value of the CFI inserted register"
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} else {
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pass "value of the CFI inserted register"
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}
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}
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}
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