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I see the following fail on aarch64-linux break void_func Breakpoint 2 at 0x4007a0: file gdb/testsuite/gdb.reverse/finish-reverse.c, line 44. (gdb) PASS: gdb.reverse/finish-reverse-bkpt.exp: set breakpoint on void_func continue Continuing. Breakpoint 2, void_func () at gdb/testsuite/gdb.reverse/finish-reverse.c:44^M 44 void_test = 1; /* VOID FUNC */^M (gdb) PASS: gdb.reverse/finish-reverse-bkpt.exp: continue to breakpoint: void_func break *void_func^M Note: breakpoint 2 also set at pc 0x4007a0.^M Breakpoint 3 at 0x4007a0: file gdb/testsuite/gdb.reverse/finish-reverse.c, line 44. (gdb) PASS: gdb.reverse/finish-reverse-bkpt.exp: set breakpoint at void_func's entry reverse-finish^M Run back to call of #0 void_func () at gdb/testsuite/gdb.reverse/finish-reverse.c:44 main (argc=1, argv=0x7ffffffb78) at gdb/testsuite/gdb.reverse/finish-reverse.c:98 98 void_func (); /* call to void_func */^M (gdb) FAIL: gdb.reverse/finish-reverse-bkpt.exp: reverse-finish from void_func trips breakpoint at entry The test assumes that brekapoints on "void_func" and "*void_func" are set on different places because of function prologue. However, on aarch64-linux, there is no prologue in void_func, so two breakpoints are set at the same place (0x4007a0). (gdb) disassemble void_func Dump of assembler code for function void_func: 0x00000000004007a0 <+0>: adrp x0, 0x410000 0x00000000004007a4 <+4>: add x0, x0, #0xc14 0x00000000004007a8 <+8>: mov w1, #0x1 0x00000000004007ac <+12>: str w1, [x0] 0x00000000004007b0 <+16>: ret The fix to this problem is to single step forward before setting breakpoint on *void_func. gdb/testsuite: 2016-04-07 Yao Qi <yao.qi@linaro.org> * gdb.reverse/finish-reverse-bkpt.exp: Use temporary breakpoint. Execute "si" command.
62 lines
2.0 KiB
Plaintext
62 lines
2.0 KiB
Plaintext
# Copyright 2008-2016 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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# This file is part of the GDB testsuite.
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#
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# 'reverse-finish' used to have a bug where user breakpoints set at
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# the functions entry would be ignored. Make sure the bug doesn't
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# reappear.
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if ![supports_reverse] {
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return
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}
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standard_testfile finish-reverse.c
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if { [prepare_for_testing $testfile.exp "$testfile" $srcfile] } {
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return -1
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}
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if ![runto_main] then {
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fail "Can't run to main"
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return 0
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}
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if [supports_process_record] {
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# Activate process record/replay
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gdb_test_no_output "record" "Turn on process record"
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}
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set breakloc [gdb_get_line_number "VOID FUNC" "$srcfile"]
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gdb_test "tbreak void_func" \
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"Temporary breakpoint $decimal at .*$srcfile, line $breakloc\." \
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"set breakpoint on void_func"
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gdb_continue_to_breakpoint "void_func" ".*$srcfile:$breakloc.*"
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# We stop at the brekapoint on void_func, but breakpoint on
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# *void_func will be set at the same place if function void_func doesn't
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# have prologue. One step forward to avoid this.
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gdb_test "si"
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gdb_test "break \*void_func" \
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"Breakpoint $decimal at .*" \
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"set breakpoint at void_func's entry"
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gdb_test "reverse-finish" \
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".*Breakpoint .*, void_func.*" \
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"reverse-finish from void_func trips breakpoint at entry"
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gdb_test "frame" "#0 void_func.*" "no spurious proceed after breakpoint stop"
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