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x86/syscalls: Remove bash-isms in syscall table generator 

Signed-off-by: Sylvain BERTRAND <sylvain.bertrand@gmail.com>
Link: http://lkml.kernel.org/r/20160929162234.GA29592@freedom
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
sylvain.bertrand@gmail.com 2016-09-29 16:22:34 +00:00 committed by Thomas Gleixner
parent db91aa793f
commit 2df0e78b44
1 changed files with 9 additions and 6 deletions
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15
arch/x86/entry/syscalls/syscalltbl.sh
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@ -10,8 +10,11 @@ syscall_macro() {
# Entry can be either just a function name or "function/qualifier" # Entry can be either just a function name or "function/qualifier"
real_entry="${entry%%/*}" real_entry="${entry%%/*}"
qualifier="${entry:${#real_entry}}" # Strip the function name if [ "$entry" = "$real_entry" ]; then
qualifier="${qualifier:1}" # Strip the slash, if any qualifier=
else
qualifier=${entry#*/}
fi
echo "__SYSCALL_${abi}($nr, $real_entry, $qualifier)" echo "__SYSCALL_${abi}($nr, $real_entry, $qualifier)"
} }
@ -22,7 +25,7 @@ emit() {
entry="$3" entry="$3"
compat="$4" compat="$4"
if [ "$abi" == "64" -a -n "$compat" ]; then if [ "$abi" = "64" -a -n "$compat" ]; then
echo "a compat entry for a 64-bit syscall makes no sense" >&2 echo "a compat entry for a 64-bit syscall makes no sense" >&2
exit 1 exit 1
fi fi
@ -45,17 +48,17 @@ emit() {
grep '^[0-9]' "$in" | sort -n | ( grep '^[0-9]' "$in" | sort -n | (
while read nr abi name entry compat; do while read nr abi name entry compat; do
abi=`echo "$abi" | tr '[a-z]' '[A-Z]'` abi=`echo "$abi" | tr '[a-z]' '[A-Z]'`
if [ "$abi" == "COMMON" -o "$abi" == "64" ]; then if [ "$abi" = "COMMON" -o "$abi" = "64" ]; then
# COMMON is the same as 64, except that we don't expect X32 # COMMON is the same as 64, except that we don't expect X32
# programs to use it. Our expectation has nothing to do with # programs to use it. Our expectation has nothing to do with
# any generated code, so treat them the same. # any generated code, so treat them the same.
emit 64 "$nr" "$entry" "$compat" emit 64 "$nr" "$entry" "$compat"
elif [ "$abi" == "X32" ]; then elif [ "$abi" = "X32" ]; then
# X32 is equivalent to 64 on an X32-compatible kernel. # X32 is equivalent to 64 on an X32-compatible kernel.
echo "#ifdef CONFIG_X86_X32_ABI" echo "#ifdef CONFIG_X86_X32_ABI"
emit 64 "$nr" "$entry" "$compat" emit 64 "$nr" "$entry" "$compat"
echo "#endif" echo "#endif"
elif [ "$abi" == "I386" ]; then elif [ "$abi" = "I386" ]; then
emit "$abi" "$nr" "$entry" "$compat" emit "$abi" "$nr" "$entry" "$compat"
else else
echo "Unknown abi $abi" >&2 echo "Unknown abi $abi" >&2