46 lines
1.0 KiB
Bash
46 lines
1.0 KiB
Bash
#!/bin/bash
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# Given a list of header files, compute the bss index that results from
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# including them. (See prevent_bss_reordering.h for more information.)
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TEMPC=$(mktemp -t bss.XXXXXXX.c)
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TEMPO=$(mktemp -t bss.XXXXXXX.o)
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trap "rm -f $TEMPC $TEMPO" EXIT
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set -e
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if [[ $# = 0 ]]; then
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echo "Usage: ./tools/calc_bss.sh file1.h file2.h ..." >&2
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exit 1
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fi
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if [ -z "$QEMU_IRIX" ]; then
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echo "env variable QEMU_IRIX should point to the qemu-mips binary" >&2
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exit 1
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fi
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if [ -z "$CROSS" ]; then
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CROSS=mips-linux-gnu-
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fi
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# bss indexing starts at 3
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for I in {3..255}; do
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echo "char bss$I;" >> $TEMPC
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done
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for I in {0..2}; do
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echo "char bss$I;" >> $TEMPC
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done
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while [[ $# -gt 0 ]]; do
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echo "#include \"$1\"" >> $TEMPC
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shift
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done
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echo "char measurement;" >> $TEMPC
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$QEMU_IRIX -silent -L $IRIX_ROOT $IRIX_ROOT/usr/bin/cc -c -non_shared -G 0 \
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-g -Xcpluscomm -mips2 -I $(pwd)/include/ $TEMPC -o $TEMPO
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LINE=$(${CROSS}objdump -t $TEMPO | grep measurement | cut -d' ' -f1)
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NUM=$((0x$LINE - 1))
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echo "bss index: $NUM"
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