49 lines
1.2 KiB
Plaintext
49 lines
1.2 KiB
Plaintext
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#!/bin/sh -
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binary=$1
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shift
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if [ `echo $binary | wc -c` -gt 28 ] ; then
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echo "#!/bin/sh -"
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echo exec $binary $* -i '"$0"' '"$@"'
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elif [ $# -gt 0 ] ; then
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echo '#!'$binary \\
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echo $* -i
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else echo '#!'$binary -i
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fi
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exec cat
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# This program reads an S48 image from stdin and turns it into
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# an executable by prepending a #! prefix. The vm and its
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# args are passed to this program on the command line.
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#
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# If the vm binary is 27 chars or less, then we can directly
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# execute the vm with one of these scripts:
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# No args:
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# image2script /usr/local/bin/svm <image
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# outputs this script:
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# #!/usr/local/bin/svm -i
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# ...image bits follow...
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#
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# Args:
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# image2script /usr/bin/svm -h 4000000 -o /usr/bin/svm <image
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# outputs this script:
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# #!/usr/bin/svm \
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# -h 4000000 -o /usr/bin/svm -i
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# ...image bits follow...
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#
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# The exec system call won't handle the #! line if it contains more than
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# 32 chars, so if the vm binary is over 28 chars, we have to use a /bin/sh
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# trampoline.
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# image2script /user1/lecturer/shivers/vc/scsh/s48/lib/svm -h 4000000 < ...
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# outputs this script:
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# #!/bin/sh -
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# exec /user1/lecturer/shivers/vc/scsh/s48/lib/svm -h 4000000 -i $0 $*
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# ...image bits follow...
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#
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# -Olin
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