2012-05-26 04:40:20 +08:00
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/* Macros for defining Systemtap <sys/sdt.h> static probe points.
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2021-01-03 03:32:25 +08:00
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Copyright (C) 2012-2021 Free Software Foundation, Inc.
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2012-05-26 04:40:20 +08:00
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This file is part of the GNU C Library.
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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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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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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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Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 13:40:42 +08:00
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<https://www.gnu.org/licenses/>. */
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2012-05-26 04:40:20 +08:00
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#ifndef _STAP_PROBE_H
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#define _STAP_PROBE_H 1
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#ifdef USE_STAP_PROBE
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2019-02-05 20:01:08 +08:00
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# include <stap-probe-machine.h>
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2012-05-26 04:40:20 +08:00
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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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Without USE_STAP_PROBE, that does nothing but evaluates all
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its arguments (to prevent bit rot, unlike e.g. assert).
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Systemtap's header defines the macros STAP_PROBE (provider, name) and
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STAP_PROBEn (provider, name, arg1, ..., argn). For "provider" we paste
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2014-11-20 14:12:00 +08:00
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in MODULE_NAME (libc, libpthread, etc.) automagically.
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2014-01-28 22:26:38 +08:00
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The format of the arg parameters is discussed here:
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https://sourceware.org/systemtap/wiki/UserSpaceProbeImplementation
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The precise details of how register names are specified is
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architecture specific and can be found in the gdb and SystemTap
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source code. */
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2012-05-26 04:40:20 +08:00
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# define LIBC_PROBE(name, n, ...) \
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2014-11-20 14:12:00 +08:00
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LIBC_PROBE_1 (MODULE_NAME, name, n, ## __VA_ARGS__)
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2012-05-26 04:40:20 +08:00
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# define LIBC_PROBE_1(lib, name, n, ...) \
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STAP_PROBE##n (lib, name, ## __VA_ARGS__)
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# define STAP_PROBE0 STAP_PROBE
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# define LIBC_PROBE_ASM(name, template) \
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2014-11-20 14:12:00 +08:00
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STAP_PROBE_ASM (MODULE_NAME, name, template)
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2012-05-26 04:40:20 +08:00
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# define LIBC_PROBE_ASM_OPERANDS STAP_PROBE_ASM_OPERANDS
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#else /* Not USE_STAP_PROBE. */
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# ifndef __ASSEMBLER__
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/* Evaluate all the arguments and verify that N matches their number. */
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2015-10-14 23:34:20 +08:00
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# define LIBC_PROBE(name, n, ...) STAP_PROBE##n (__VA_ARGS__)
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2013-12-03 14:56:12 +08:00
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2019-02-13 21:50:13 +08:00
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# define STAP_PROBE0() do {} while (0)
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# define STAP_PROBE1(a1) do {} while (0)
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# define STAP_PROBE2(a1, a2) do {} while (0)
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# define STAP_PROBE3(a1, a2, a3) do {} while (0)
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# define STAP_PROBE4(a1, a2, a3, a4) do {} while (0)
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2013-12-03 14:56:12 +08:00
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2012-05-26 04:40:20 +08:00
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# else
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# define LIBC_PROBE(name, n, ...) /* Nothing. */
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# endif
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# define LIBC_PROBE_ASM(name, template) /* Nothing. */
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# define LIBC_PROBE_ASM_OPERANDS(n, ...) /* Nothing. */
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#endif /* USE_STAP_PROBE. */
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#endif /* stap-probe.h */
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