75 lines
3.1 KiB
Diff
75 lines
3.1 KiB
Diff
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2019-02-05 Florian Weimer <fweimer@redhat.com>
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[BZ #24164]
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arm: Use "nr" constraint for Systemtap probes, to avoid the
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compiler using memory operands for constants, due to the "o"
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alternative in the default "nor" constraint.
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* include/stap-probe.h [USE_STAP_PROBE]: Include
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<stap-probe-machine.h>
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* sysdeps/generic/stap-probe-machine.h: New file.
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* sysdeps/arm/stap-probe-machine.h: Likewise.
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Index: glibc-2.29/include/stap-probe.h
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===================================================================
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--- glibc-2.29.orig/include/stap-probe.h
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+++ glibc-2.29/include/stap-probe.h
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@@ -21,6 +21,7 @@
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#ifdef USE_STAP_PROBE
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+# include <stap-probe-machine.h>
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# include <sys/sdt.h>
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/* Our code uses one macro LIBC_PROBE (name, n, arg1, ..., argn).
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Index: glibc-2.29/sysdeps/arm/stap-probe-machine.h
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===================================================================
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--- /dev/null
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+++ glibc-2.29/sysdeps/arm/stap-probe-machine.h
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@@ -0,0 +1,22 @@
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+/* Macros for customizing Systemtap <sys/sdt.h>. Arm version.
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+ Copyright (C) 2019 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library 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 GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <http://www.gnu.org/licenses/>. */
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+
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+/* The default "nor" constraint produces unparseable memory references
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+ for constants. Omit the problematic "o" constraint. See bug 24164
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+ and GCC PR 89146. */
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+#define STAP_SDT_ARG_CONSTRAINT nr
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Index: glibc-2.29/sysdeps/generic/stap-probe-machine.h
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===================================================================
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--- /dev/null
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+++ glibc-2.29/sysdeps/generic/stap-probe-machine.h
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@@ -0,0 +1,19 @@
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+/* Macros for customizing Systemtap <sys/sdt.h>. Generic version.
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+ Copyright (C) 2019 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library 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 GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <http://www.gnu.org/licenses/>. */
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+
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+/* By default, there are no customizations. */
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