From f1ac7455831546e5dca0ed98fe8af2686fae7ce6 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Tue, 5 Feb 2019 13:01:08 +0100 Subject: arm: Use "nr" constraint for Systemtap probes [BZ #24164] With the default "nor" constraint, current GCC will use the "o" constraint for constants, after emitting the constant to memory. That results in unparseable Systemtap probe notes such as "-4@.L1052". Removing the "o" alternative and using "nr" instead avoids this. --- sysdeps/arm/stap-probe-machine.h | 22 ++++++++++++++++++++++ sysdeps/generic/stap-probe-machine.h | 19 +++++++++++++++++++ 2 files changed, 41 insertions(+) create mode 100644 sysdeps/arm/stap-probe-machine.h create mode 100644 sysdeps/generic/stap-probe-machine.h (limited to 'sysdeps') diff --git a/sysdeps/arm/stap-probe-machine.h b/sysdeps/arm/stap-probe-machine.h new file mode 100644 index 0000000..d27ca22 --- /dev/null +++ b/sysdeps/arm/stap-probe-machine.h @@ -0,0 +1,22 @@ +/* Macros for customizing Systemtap . Arm version. + Copyright (C) 2019 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +/* The default "nor" constraint produces unparseable memory references + for constants. Omit the problematic "o" constraint. See bug 24164 + and GCC PR 89146. */ +#define STAP_SDT_ARG_CONSTRAINT nr diff --git a/sysdeps/generic/stap-probe-machine.h b/sysdeps/generic/stap-probe-machine.h new file mode 100644 index 0000000..2e5790c --- /dev/null +++ b/sysdeps/generic/stap-probe-machine.h @@ -0,0 +1,19 @@ +/* Macros for customizing Systemtap . Generic version. + Copyright (C) 2019 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +/* By default, there are no customizations. */ -- cgit v1.1