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106 lines
3.5 KiB
Plaintext
106 lines
3.5 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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#
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# Copyright 2013-2018 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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# This test requires the compiler to generate a tail call. To guarantee that
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# we always get one, we use an assembly source file.
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#
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# We use different assembly sources based on the target architecture.
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#
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# Luckily, they are similar enough that a single test script can handle
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# both.
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set opts {}
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if [info exists COMPILE] {
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# make check RUNTESTFLAGS="gdb.btrace/tailcall.exp COMPILE=1"
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standard_testfile tailcall.c
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lappend opts debug optimize=-O2
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} elseif {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
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if {[is_amd64_regs_target]} {
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standard_testfile x86_64-tailcall.S
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} else {
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standard_testfile i686-tailcall.S
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}
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} else {
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unsupported "target architecture not supported"
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return -1
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}
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if [prepare_for_testing "failed to prepare" $testfile $srcfile $opts] {
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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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# trace the call to foo
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gdb_test_no_output "record btrace"
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gdb_test "next 2"
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# show the flat branch trace
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gdb_test "record function-call-history 1" [multi_line \
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"1\tmain" \
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"2\tfoo" \
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"3\tbar" \
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"4\tmain" \
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] "flat"
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# show the branch trace with calls indented
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gdb_test "record function-call-history /c 1" [multi_line \
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"1\tmain" \
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"2\t foo" \
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"3\t bar" \
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"4\tmain" \
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] "indented"
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# go into bar
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gdb_test "record goto 4" ".*bar \\(\\) at .*tailcall.c:24\r\n.*"
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# check the backtrace
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gdb_test "backtrace" [multi_line \
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"#0.*bar \\(\\) at tailcall.c:24" \
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"#1.*foo \\(\\) at tailcall.c:29" \
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"#2.*main \\(\\) at tailcall.c:37" \
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"Backtrace stopped: not enough registers or memory available to unwind further" \
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]
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# walk the backtrace
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gdb_test "up" "#1\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*" "up to foo"
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gdb_test "up" "#2\[^\r\n\]*main \\(\\) at tailcall.c:37\r\n.*" "up to main"
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gdb_test "down" "#1\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*" "down to foo"
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# test stepping into and out of tailcalls.
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gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:38\r\n.*"
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gdb_test "reverse-step" "\[^\r\n\]*bar \\(\\) at tailcall.c:24\r\n.*"
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gdb_test "reverse-finish" "\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*"
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gdb_test "reverse-step" "\[^\r\n\]*main \\(\\) at tailcall.c:37\r\n.*"
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gdb_test "next" "\[^\r\n\]*38.*"
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gdb_test "reverse-next" "\[^\r\n\]*main \\(\\) at tailcall.c:37\r\n.*"
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gdb_test "step" "\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*"
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gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:38\r\n.*"
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gdb_test "reverse-step" "\[^\r\n\]*bar \\(\\) at tailcall.c:24\r\n.*"
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gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:38\r\n.*"
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