c595699ca7
lets unstack (a) know about in-kernel ipc entry points and (b) be able handle >2GB symbol offsets. . sort: add -x for hex numerical sort . unstack: gnm is obsolete . unstack: datasizes is obsolete (use nm --size-sort instead) . unstack: add ipc entry points read from procfs (hex) . unstack: use sort -x to sort symbol order so the procfs ones are sorted independent of position and original ordering
65 lines
1.1 KiB
Bash
65 lines
1.1 KiB
Bash
#!/bin/sh
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# Look at /usr/pkg/bin first in case there is an old nm in /usr/bin
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PATH=/usr/pkg/bin:$PATH:/usr/gnu/bin
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# Does procfs give us some extra 'symbols'?
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IPCVECS=/proc/ipcvecs
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if [ -f $IPCVECS ]
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then EXTRANM="cat $IPCVECS"
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fi
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# Check usage
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if [ $# -lt 1 ]
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then echo "Usage: unstack <executable> [0x... [0x... ] ]"
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exit 1
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fi
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# Check invocation mode
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case "`basename $0`" in
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datasizes)
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echo "datasizes is obsolete; please use nm --size-sort instead."
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exit 1
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;;
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unstack)
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mode=stack
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;;
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*)
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echo "Invoked as $0?"
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exit 1
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;;
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esac
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# Get executable name
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executable=$1
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shift
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if ! which gawk >/dev/null 2>&1
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then echo "Please install gawk."
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exit 1
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fi
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# Invoke binutils nm or ack nm?
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if file $executable | grep ELF >/dev/null 2>&1
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then NM="nm"
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else NM="acknm"
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fi
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SYMLIST=/tmp/unstack.$$
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# store sorted, filtered nm output once
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( $NM $executable ; $EXTRANM ) | sed 's/^/0x/' | sort -x | grep ' [Tt] [^.]' >$SYMLIST
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while [ $# -gt 0 ]
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do gawk <$SYMLIST --non-decimal-data -v symoffset=$1 '
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{ if($1 > symoffset) { printf "%s+0x%x\n", name, symoffset-prevoffset; exit }
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name=$3; prevoffset=$1;
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}'
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shift
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done
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rm -f $SYMLIST
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exit 1
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