759ce73cf7
Change the unused var in 'arch/x86/entry/syscalls/syscalltbl.sh' to '_'
when reading from '$sorted_table'. This change allows the script to pass
tests of ShellCheck before and after version 0.7.2 at the same time.
When building in arch x86, syscalltbl.sh got a ShellCheck warning, which
makes compilation error:
In arch/x86/entry/syscalls/syscalltbl.sh line 27:
while read nr _abi name entry _compat; do
^-^ SC2034: abi appears unused.
Verify use (or export if used externally).
^----^ SC2034: compat appears unused.
Verify use (or export if used externally).
The script reads unused param abi and compat. It uses format '_xxx' to
indicate dummy vars, which won't work properly when ShellCheck <= 0.7.2.
According to SC2034, the more general way of writing is to use directly
'_' to indicate discarding vars. 'entry' is also replaced by '_' because
it just happens to be defined in emit function, otherwise it will lead
to some misunderstandings.
Link: https://www.shellcheck.net/wiki/SC2034
Signed-off-by: Haoze Xie <royenheart@gmail.com>
Signed-off-by: Yuan Tan <tanyuan@tinylab.org>
Link: https://lore.kernel.org/r/2143cab4cd8468c88860f4e5e382d0e6b4d89ac9.1720372178.git.royenheart@gmail.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
42 lines
732 B
Bash
Executable file
42 lines
732 B
Bash
Executable file
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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in="$1"
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arch="$2"
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syscall_macro() {
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nr="$1"
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name="$2"
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echo " [$nr] = \"$name\","
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}
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emit() {
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nr="$1"
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entry="$2"
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syscall_macro "$nr" "$entry"
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}
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echo "static const char *const syscalltbl_${arch}[] = {"
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sorted_table=$(mktemp /tmp/syscalltbl.XXXXXX)
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grep '^[0-9]' "$in" | sort -n > $sorted_table
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max_nr=0
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# the params are: nr abi name entry compat
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# use _ for intentionally unused variables according to SC2034
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while read nr _ name _ _; do
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if [ $nr -ge 512 ] ; then # discard compat sycalls
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break
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fi
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emit "$nr" "$name"
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max_nr=$nr
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done < $sorted_table
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rm -f $sorted_table
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echo "};"
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echo "#define SYSCALLTBL_${arch}_MAX_ID ${max_nr}"
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