Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
26 lines
917 B
Bash
Executable File
26 lines
917 B
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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set -e
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# To debug, uncomment the following line
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# set -x
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# Output from -fpatchable-function-entry can only vary on ppc64 elfv2, so this
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# should not be invoked for other targets. Therefore we can pass in -m64 and
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# -mabi explicitly, to take care of toolchains defaulting to other targets.
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# Test whether the compile option -fpatchable-function-entry exists and
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# generates appropriate code
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echo "int func() { return 0; }" | \
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$* -m64 -mabi=elfv2 -S -x c -O2 -fpatchable-function-entry=2 - -o - 2> /dev/null | \
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grep -q "__patchable_function_entries"
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# Test whether nops are generated after the local entry point
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echo "int x; int func() { return x; }" | \
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$* -m64 -mabi=elfv2 -S -x c -O2 -fpatchable-function-entry=2 - -o - 2> /dev/null | \
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awk 'BEGIN { RS = ";" } /\.localentry.*nop.*\n[[:space:]]*nop/ { print $0 }' | \
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grep -q "func:"
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exit 0
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