67695ab596
* gdb-testsuite-add-gdb.opt-break-on-_exit.exp.patch * gdb-tdep-rs6000-don-t-skip-system-call-in-skip_prologue.patch * gdb-testsuite-fix-stepi-test-cases-with-unix-m32-fpie-pie.patch * gdb-testsuite-fix-assembly-comments-in-gdb.dwarf2-clang-debug-names.exp.tcl.patch * gdb-doc-fix-print-inferior-events-default.patch * gdb-testsuite-fix-gdb.guile-scm-type.exp-with-gcc-4.8.patch * gdb-testsuite-add-gdb.arch-ppc64-break-on-_exit.exp.patch * gdb-testsuite-don-t-error-when-trying-to-unset-last_spawn_tty_name.patch * gdb-exp-improve-error-reading-variable-message.patch * fix-gdb.base-sigstep.exp-test-for-ppc.patch * gdb-testsuite-fix-regexp-in-gdb.base-foll-vfork.exp.patch - Patches added (backports from ml): * gdb-testsuite-disable-inferior-output-in-gdb.base-foll-vfork.exp.patch - Maintenance script qa.sh: - Add -m32/-pie to known clean configs. - Add kfail for PR28467. OBS-URL: https://build.opensuse.org/package/show/devel:gcc/gdb?expand=0&rev=303
349 lines
10 KiB
Diff
349 lines
10 KiB
Diff
[gdb/testsuite] Add gdb.arch/ppc64-break-on-_exit.exp
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Add a regression test-case for commit a50bdb99afe "[gdb/tdep, rs6000] Don't
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skip system call in skip_prologue":
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- set a breakpoint on a local copy of glibc's _exit, and
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- verify that it triggers.
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The test-case uses an assembly file by default, but also has the possibility
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to use a C source file instead.
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Tested on ppc64le-linux. Verified that the test-case fails without
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aforementioned commit, and passes with the commit. Both with assembly
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and C source.
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---
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gdb/testsuite/gdb.arch/ppc64-break-on-_exit-main.c | 27 +++++
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gdb/testsuite/gdb.arch/ppc64-break-on-_exit.c | 112 +++++++++++++++++++++
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gdb/testsuite/gdb.arch/ppc64-break-on-_exit.exp | 56 +++++++++++
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gdb/testsuite/gdb.arch/ppc64-break-on-_exit.s | 108 ++++++++++++++++++++
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4 files changed, 303 insertions(+)
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diff --git a/gdb/testsuite/gdb.arch/ppc64-break-on-_exit-main.c b/gdb/testsuite/gdb.arch/ppc64-break-on-_exit-main.c
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new file mode 100644
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index 00000000000..77253140e36
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--- /dev/null
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+++ b/gdb/testsuite/gdb.arch/ppc64-break-on-_exit-main.c
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@@ -0,0 +1,27 @@
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+/* This file is part of GDB, the GNU debugger.
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+
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+ Copyright 2021 Free Software Foundation, Inc.
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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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+
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+#include <unistd.h>
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+
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+__thread int __libc_errno;
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+
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+int
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+main ()
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+{
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+ _exit (22);
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+ return 0;
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+}
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diff --git a/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.c b/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.c
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new file mode 100644
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index 00000000000..8638a7a6b70
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--- /dev/null
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+++ b/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.c
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@@ -0,0 +1,112 @@
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+/* This file is part of GDB, the GNU debugger.
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+
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+ Copyright 2021 Free Software Foundation, Inc.
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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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+
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+/* This file was generated from glibc's 2.31 _exit.c, by doing a glibc build
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+ on ppc64le-linux, copying the command line, adding -g0 -save-temps and
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+ recuding the _exit.i file. */
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+
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+void _exit (int status);
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+
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+extern __thread int __libc_errno;
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+
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+void
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+_exit (int status)
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+{
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+ while (1)
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+ {
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+ ({
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+ long int sc_err __attribute__ ((unused));
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+ long int sc_ret
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+ = ({
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+ register long int r0 __asm__ ("r0");
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+ register long int r3 __asm__ ("r3");
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+ register long int r4 __asm__ ("r4");
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+ register long int r5 __asm__ ("r5");
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+ register long int r6 __asm__ ("r6");
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+ register long int r7 __asm__ ("r7");
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+ register long int r8 __asm__ ("r8");
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+ long int arg1 = (long int) (status);
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+
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+ r0 = 234;
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+
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+ extern void __illegally_sized_syscall_arg1 (void);
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+ if (__builtin_classify_type (status) != 5 && sizeof (status) > 8)
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+ __illegally_sized_syscall_arg1 ();
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+
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+ r3 = arg1;
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+ __asm__ __volatile__ ("sc\n\t" "mfcr %0\n\t" "0:"
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+ : "=&r" (r0), "=&r" (r3), "=&r" (r4),
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+ "=&r" (r5), "=&r" (r6), "=&r" (r7),
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+ "=&r" (r8) : "0" (r0), "1" (r3)
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+ : "r9", "r10", "r11", "r12", "cr0", "ctr", "memory");
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+ sc_err = r0;
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+
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+ r3;
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+ });
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+
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+ if (((void) (sc_ret), __builtin_expect ((sc_err) & (1 << 28), 0)))
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+ {
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+ (__libc_errno = ((sc_ret)));
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+ sc_ret = -1L;
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+ }
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+
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+ sc_ret;
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+ });
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+
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+ ({
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+ long int sc_err __attribute__ ((unused));
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+ long int sc_ret
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+ = ({
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+ register long int r0 __asm__ ("r0");
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+ register long int r3 __asm__ ("r3");
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+ register long int r4 __asm__ ("r4");
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+ register long int r5 __asm__ ("r5");
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+ register long int r6 __asm__ ("r6");
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+ register long int r7 __asm__ ("r7");
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+ register long int r8 __asm__ ("r8");
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+ long int arg1 = (long int) (status);
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+
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+ r0 = 1;
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+
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+ extern void __illegally_sized_syscall_arg1 (void);
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+ if (__builtin_classify_type (status) != 5 && sizeof (status) > 8)
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+ __illegally_sized_syscall_arg1 ();
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+
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+ r3 = arg1;
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+ __asm__ __volatile__ ("sc\n\t" "mfcr %0\n\t" "0:"
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+ : "=&r" (r0), "=&r" (r3), "=&r" (r4),
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+ "=&r" (r5), "=&r" (r6), "=&r" (r7),
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+ "=&r" (r8) : "0" (r0), "1" (r3)
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+ : "r9", "r10", "r11", "r12", "cr0", "ctr", "memory");
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+ sc_err = r0;
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+
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+ r3;
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+ });
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+
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+ if (((void) (sc_ret), __builtin_expect ((sc_err) & (1 << 28), 0)))
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+ {
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+ (__libc_errno = ((sc_ret)));
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+ sc_ret = -1L;
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+ }
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+
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+ sc_ret;
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+ });
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+
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+
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+ asm (".long 0");
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+ }
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+}
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diff --git a/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.exp b/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.exp
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new file mode 100644
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index 00000000000..b2fef8e8b76
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--- /dev/null
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+++ b/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.exp
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@@ -0,0 +1,56 @@
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+# Copyright 2021 Free Software Foundation, Inc.
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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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+
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+# Set a breakpoint on a local copy of glibc's _exit, and verify that it
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+# triggers. The function does a syscall immediately after the prologue, and
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+# if the breakpoint is set past the syscall due to faulty prologue skipping,
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+# the breakpoint will not trigger.
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+#
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+# In particular, we're trying to excercise the instruction analysis
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+# functionality of prologue skipping. If non-minimal symbols are
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+# read, then that functionality might not be used because f.i.
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+# line-info is used instead. So, we use nodebug.
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+
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+if {![istarget "powerpc*"] || ![is_lp64_target]} {
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+ unsupported "Not powerpc64"
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+ return
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+}
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+
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+set flags { nodebug }
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+if { 1 } {
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+ standard_testfile .s -main.c
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+} else {
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+ standard_testfile .c -main.c
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+ lappend flags optimize=-O2
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+ lappend flags additional_flags=-fno-stack-protector
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+ lappend flags additional_flags=-mlong-double-128
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+ lappend flags additional_flags=-fpic
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+ lappend flags additional_flags=-ftls-model=initial-exec
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+}
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+
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+if { [prepare_for_testing "failed to prepare" ${testfile} \
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+ [list $srcfile $srcfile2] $flags] } {
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+ return -1
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+}
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+
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+if ![runto_main] then {
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+ return 0
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+}
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+
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+gdb_breakpoint "_exit"
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+
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+# If the skip_prologue analysis of _exit is too eager, we may not hit the
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+# breakpoint.
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+gdb_continue_to_breakpoint "_exit" "_exit \\(\\).*"
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diff --git a/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.s b/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.s
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new file mode 100644
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index 00000000000..37a9ace2aff
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--- /dev/null
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+++ b/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.s
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@@ -0,0 +1,108 @@
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+/* This file is part of GDB, the GNU debugger.
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+
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+ Copyright 2021 Free Software Foundation, Inc.
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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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+
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+/* This file was generated from ppc64-break-on-_exit.c. */
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+
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+ .file "ppc64-break-on-_exit.c"
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+ .abiversion 2
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+ .section ".text"
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+ .align 2
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+ .p2align 4,,15
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+ .globl _exit
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+ .type _exit, @function
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+_exit:
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+.LCF0:
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+0: addis 2,12,.TOC.-.LCF0@ha
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+ addi 2,2,.TOC.-.LCF0@l
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+ .localentry _exit,.-_exit
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+ addis 9,2,__libc_errno@got@tprel@ha
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+ std 31,-8(1)
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+ mr 31,3
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+ std 30,-16(1)
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+ li 0,234
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+ ld 9,__libc_errno@got@tprel@l(9)
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+ mr 3,31
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+ add 30,9,__libc_errno@tls
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+#APP
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+ # 28 "src/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.c" 1
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+ sc
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+ mfcr 0
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+ 0:
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+ # 0 "" 2
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+#NO_APP
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+ andis. 9,0,0x1000
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+ mr 9,3
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+ li 0,1
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+ mr 3,31
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+ bne 0,.L13
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+ .p2align 4,,15
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+.L2:
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+#APP
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+ # 67 "src/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.c" 1
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+ sc
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+ mfcr 0
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+ 0:
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+ # 0 "" 2
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+#NO_APP
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+ andis. 9,0,0x1000
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+ bne 0,.L14
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+.L3:
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+#APP
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+ # 87 "src/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.c" 1
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+ .long 0
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+ # 0 "" 2
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+#NO_APP
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+.L15:
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+ li 0,234
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+ mr 3,31
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+#APP
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+ # 28 "src/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.c" 1
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+ sc
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+ mfcr 0
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+ 0:
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+ # 0 "" 2
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+#NO_APP
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+ andis. 9,0,0x1000
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+ mr 9,3
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+ li 0,1
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+ mr 3,31
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+ beq 0,.L2
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+.L13:
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+ stw 9,0(30)
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+#APP
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+ # 67 "src/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.c" 1
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+ sc
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+ mfcr 0
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+ 0:
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+ # 0 "" 2
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+#NO_APP
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+ andis. 9,0,0x1000
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+ beq 0,.L3
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+ .p2align 4,,15
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+.L14:
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+ stw 3,0(30)
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+#APP
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+ # 87 "src/gdb/testsuite/gdb.arch/ppc64-break-on-_exit.c" 1
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+ .long 0
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+ # 0 "" 2
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+#NO_APP
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+ b .L15
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+ .long 0
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+ .byte 0,0,0,0,0,2,0,0
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+ .size _exit,.-_exit
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+ .ident "GCC: (SUSE Linux) 7.5.0"
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+ .section .note.GNU-stack,"",@progbits
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