Files
RedBear-OS/renamesyms.sh
T
4lDO2 3701ea3be7 Conflict-proof #[global_allocator] symbols too.
The #[global_allocator] used by relibc is only relibc's business.
Symbols should therefore not leak if another applications for example
wants to override the system allocator (and for bootstrap, which links
to relibc but uses its own #[global_allocator] based on libc functions).
2022-07-26 21:34:47 +02:00

28 lines
715 B
Bash
Executable File

#!/bin/sh
target=$1
deps_dir=$2
if [ -z "$target" ] || [ -z "$deps_dir" ]; then
echo "Usage:\n\t./renamesyms.sh TARGET DEPS_DIR"
exit 1
fi
symbols_file=`mktemp`
special_syms="__rg_alloc __rg_dealloc __rg_realloc __rg_alloc_zeroed"
for dep in `find $deps_dir -type f -name "*.rlib"`; do
nm --format=posix -g "$dep" 2>/dev/null | sed 's/.*:.*//g' | awk '{if ($2 == "T") print $1}' | sed 's/^\(.*\)$/\1 __relibc_\1/g' >> $symbols_file
done
for special_sym in $special_syms; do
echo "$special_sym __relibc_$special_sym" >> $symbols_file
done
sorted_file=`mktemp`
sort -u "$symbols_file" > "$sorted_file"
rm -f "$symbols_file"
objcopy --redefine-syms="$sorted_file" "$target"
rm -f "$sorted_file"