26 lines
648 B
Bash
26 lines
648 B
Bash
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#!/bin/sh
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#
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# gensyscalls.sh
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# Usage: ./gensyscalls.sh < syscalls.h
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#
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# Parses the kernel's syscalls.h into the body of syscalls.S
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#
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# tabs to spaces, just in case
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tr '\t' ' ' |\
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awk '
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# Do not read the parts of the file that are not between the markers.
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/^\/\*CALLBEGIN\*\// { look=1; }
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/^\/\*CALLEND\*\// { look=0; }
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# And, do not read lines that do not match the approximate right pattern.
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look && /^#define SYS_/ && NF==3 {
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sub("^SYS_", "", $2);
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# print the name of the call and the number.
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print $2, $3;
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}
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' | awk '{
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# output something simple that will work in syscalls.S.
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printf "SYSCALL(%s, %s)\n", $1, $2;
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}'
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