mirror of git://sourceware.org/git/glibc.git
78 lines
2.3 KiB
Bash
78 lines
2.3 KiB
Bash
#! /bin/sh
|
|
|
|
# Usage: make-syscalls.sh ../sysdeps unix/common
|
|
# Expects $sysdirs in environment.
|
|
|
|
sysbase=$1; shift
|
|
thisdir=$1; shift
|
|
|
|
# Get the list of system calls for this directory.
|
|
calls=`sed 's/#.*$//
|
|
/^[ ]*$/d' $sysbase/$thisdir/syscalls.list`
|
|
|
|
# Check each sysdep dir with higher priority than this one,
|
|
# and remove from $calls all the functions found in other dirs.
|
|
for dir in $sysdirs; do
|
|
|
|
# Punt when we reach the directory defining these syscalls.
|
|
test $dir = $thisdir && break
|
|
|
|
# Remove each syscall that is implemented by a file in $dir.
|
|
# If a syscall specified a "caller", then only compile that syscall
|
|
# if the caller function is also implemented in this directory.
|
|
calls=`echo "$calls" | while read file caller rest; do
|
|
test -f $sysbase/$dir/$file.c && continue
|
|
test -f $sysbase/$dir/$file.S && continue
|
|
test -f $sysbase/$dir/$file.s && continue
|
|
if test x$caller != x-; then
|
|
test -f $sysbase/$dir/$caller.c && continue
|
|
test -f $sysbase/$dir/$caller.S && continue
|
|
test -f $sysbase/$dir/$caller.s && continue
|
|
fi
|
|
echo $file $caller $rest
|
|
done`
|
|
|
|
done
|
|
|
|
# Any calls left?
|
|
test -n "$calls" || exit 0
|
|
|
|
files=
|
|
|
|
# Emit rules to compile the syscalls remaining in $calls.
|
|
echo "$calls" | while read file caller syscall nargs strong weak; do
|
|
|
|
# Figure out if $syscall is defined with a number in syscall.h.
|
|
$asm_CPP - << EOF | grep "^@@@ .*$syscall" >/dev/null && continue
|
|
#include <sysdep.h>
|
|
@@@ SYS_ify ($syscall)
|
|
EOF
|
|
|
|
# Make sure only the first syscall rule is used, if multiple dirs
|
|
# define the same syscall.
|
|
echo "ifeq (,\$(filter $file,\$(unix-syscalls)))"
|
|
|
|
# Accumulate the list of syscall files for this directory.
|
|
echo "unix-syscalls += $file"
|
|
test x$caller = x- || echo "unix-extra-syscalls += $file"
|
|
|
|
# Emit a compilation rule for this syscall.
|
|
echo "\
|
|
\$(foreach o,\$(object-suffixes),\$(objpfx)$file\$o): \$(objpfx)s-proto.d
|
|
(echo '#include <sysdep.h>'; \\
|
|
echo 'PSEUDO ($strong, $syscall, $nargs)'; \\
|
|
echo ' ret'; \\
|
|
echo 'PSEUDO_END($strong)'; \\"
|
|
|
|
# Append any weak aliases defined for this syscall function.
|
|
for name in $weak; do
|
|
echo " echo 'weak_alias ($strong, $name)'; \\"
|
|
done
|
|
|
|
# And finally, pipe this all into the compiler.
|
|
echo ' ) | $(COMPILE.S) -x assembler-with-cpp -o $@ -'
|
|
|
|
echo endif
|
|
|
|
done
|