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55 lines
1000 B
Bash
55 lines
1000 B
Bash
#!/bin/sh
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# $FreeBSD$
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# Grrr, this should use stdin and stdout, but is encrufted for compatibility.
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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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outfile=/dev/stdout
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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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*) usage;;
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esac
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done
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shift $(($OPTIND - 1))
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case $# in
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1) ;;
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*) usage;;
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esac
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${NM:='nm'} "$1" | awk '
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/ C .*sign$/ {
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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($1) - 3, 4)
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w = w3 w2 w1 w0
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sub("^0*", "", w)
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if (w == "")
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w = "0"
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sub("w3$", "", $3)
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# This still has minor problems representing INT_MIN, etc. E.g.,
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# with 32-bit 2''s complement ints, this prints -0x80000000, which
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# has the wrong type (unsigned int).
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printf("#define\t%s\t%s0x%s\n", $3, sign, w)
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}
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' 3>"$outfile" >&3 3>&-
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