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