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0fe69a94d4
For 32-bit position independent executables, GCC generates an extra call to
__x86.get_pc_thunk.<reg>
which appears in the function call history. It is correct to appear there
but this confuses the tests, which check for an expected sequence of
functions.
Build with nopie to avoid this complication.
gdb/testsuite/ChangeLog:
2020-12-04 Markus Metzger <markus.t.metzger@intel.com>
* gdb.btrace/exception.exp: Build with nopie.
* gdb.btrace/function_call_history.exp: Likewise.
* gdb.btrace/unknown_functions.exp: Likewise.
79 lines
2.3 KiB
Plaintext
Executable File
79 lines
2.3 KiB
Plaintext
Executable File
# This testcase is part of GDB, the GNU debugger.
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#
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# Copyright 2013-2020 Free Software Foundation, Inc.
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#
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# Contributed by Intel Corp. <markus.t.metzger@intel.com>
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#
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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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if { [skip_btrace_tests] } {
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unsupported "target does not support record-btrace"
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return -1
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}
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# We expect a specific function call history. This gets messed up with
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# PIE on 32-bit.
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standard_testfile exception.cc
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if [prepare_for_testing "failed to prepare" $testfile $srcfile \
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{nopie c++ debug}] {
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return -1
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}
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if ![runto_main] {
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untested "failed to run to main"
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return -1
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}
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# we want to see the full trace for this test
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gdb_test_no_output "set record function-call-history-size 0"
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# set bp
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set bp_1 [gdb_get_line_number "bp.1" $srcfile]
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set bp_2 [gdb_get_line_number "bp.2" $srcfile]
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gdb_breakpoint $bp_1
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gdb_breakpoint $bp_2
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# trace the code between the two breakpoints
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gdb_continue_to_breakpoint "cont to bp.1" ".*$srcfile:$bp_1\r\n.*"
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# increase the BTS buffer size - the trace can be quite big
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gdb_test_no_output "set record btrace bts buffer-size 128000"
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gdb_test_no_output "record btrace"
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gdb_continue_to_breakpoint "cont to bp.2" ".*$srcfile:$bp_2\r\n.*"
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# show the flat branch trace
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send_gdb "record function-call-history 1\n"
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gdb_expect_list "flat" "\r\n$gdb_prompt $" [list \
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[multi_line \
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"1\tmain\\(\\)" \
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"2\ttest\\(\\)" \
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"3\tfoo\\(\\)" \
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"4\tbar\\(\\)" \
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"5\tbad\\(\\)\r" \
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] \
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"" \
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"\[0-9\]*\ttest\\(\\)"]
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# show the branch trace with calls indented
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send_gdb "record function-call-history /c 1\n"
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gdb_expect_list "indented" "\r\n$gdb_prompt $" [list \
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[multi_line \
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"1\tmain\\(\\)" \
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"2\t test\\(\\)" \
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"3\t foo\\(\\)" \
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"4\t bar\\(\\)" \
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"5\t bad\\(\\)\r" \
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] \
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"" \
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"\[0-9\]*\t test\\(\\)"]
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