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72 lines
1.1 KiB
Bash
72 lines
1.1 KiB
Bash
#!/bin/sh
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usage()
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{
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echo "usage: genassym [-o outfile] objfile"
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exit 1
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}
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work()
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{
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${NM:='nm'} ${NMFLAGS} "$1" | ${AWK:='awk'} '
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/ C .*sign$/ {
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sign = substr($1, length($1) - 3, 4)
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sub("^0*", "", sign)
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if (sign != "")
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sign = "-"
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}
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/ C .*w0$/ {
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w0 = substr($1, length($1) - 3, 4)
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}
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/ C .*w1$/ {
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w1 = substr($1, length($1) - 3, 4)
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}
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/ C .*w2$/ {
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w2 = substr($1, length($1) - 3, 4)
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}
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/ C .*w3$/ {
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w3 = substr($1, length($1) - 3, 4)
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w = w3 w2 w1 w0
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sub("^0*", "", w)
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if (w == "")
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w = "0"
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hex = ""
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if (w != "0")
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hex = "0x"
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sub("w3$", "", $3)
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# This still has minor problems representing INT_MIN, etc.
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# E.g.,
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# with 32-bit 2''s complement ints, this prints -0x80000000,
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# which has the wrong type (unsigned int).
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printf("#define\t%s\t%s%s%s\n", $3, sign, hex, w)
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} '
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}
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#
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# MAIN PROGRAM
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#
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use_outfile="no"
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while getopts "o:" option
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do
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case "$option" in
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o) outfile="$OPTARG"
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use_outfile="yes";;
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*) usage;;
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esac
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done
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shift $((OPTIND - 1))
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case $# in
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1) ;;
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*) usage;;
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esac
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if [ "$use_outfile" = "yes" ]
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then
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work "$1" 3>"$outfile" >&3 3>&-
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else
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work "$1"
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fi
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