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#!/usr/bin/env bash
# Given a list of header files, compute the bss index that results from
# including them.
TEMPC=$(mktemp -t bss.XXXXXXX.c)
TEMPO=$(mktemp -t bss.XXXXXXX.o)
trap "rm -f $TEMPC $TEMPO" EXIT
set -e
if [[ $# = 0 ]]; then
echo "Usage: ./tools/calc_bss.sh file1.h file2.h ..." >&2
exit 1
fi
if [ -z "$CROSS" ]; then
CROSS=mips-linux-gnu-
fi
# bss indexing starts at 3
for I in {3..255}; do
echo "char bss$I;" >> $TEMPC
done
for I in {0..2}; do
echo "char bss$I;" >> $TEMPC
done
while [[ $# -gt 0 ]]; do
echo "#include \"$1\"" >> $TEMPC
shift
done
echo "char measurement;" >> $TEMPC
$(pwd)/tools/ido_recomp/linux/7.1/cc -G 0 -non_shared \
-Xfullwarn -Xcpluscomm -O2 -g3 -Xcpluscomm -mips2 \
-D_LANGUAGE_C -DF3DEX_GBI_2 -DF3DEX_GBI_PL -DGBI_DOWHILE \
-I $(pwd)/include/ -I $(pwd)/include/libc/ -I $(pwd)/src/ -I $(pwd)/build/n64-us/ -I $(pwd)/\
-Wab,-r4300_mul -woff 624,649,838,712 -c $TEMPC -o $TEMPO
LINE=$(${CROSS}objdump -t $TEMPO | grep measurement | cut -d' ' -f1)
NUM=$((0x$LINE - 1))
echo "bss index: $NUM"
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