174 lines
4.1 KiB
Bash
174 lines
4.1 KiB
Bash
#! /bin/sh -
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# @(#)makesyscalls.sh 8.1 (Berkeley) 6/10/93
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# $Id: makesyscalls.sh,v 1.2 1994/08/02 07:42:24 davidg Exp $
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set -e
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# name of compat option:
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compat=COMPAT_43
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# output files:
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sysnames="syscalls.c"
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syshdr="../sys/syscall.h"
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syssw="init_sysent.c"
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# tmp files:
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sysdcl="sysent.dcl"
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syscompat="sysent.compat"
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sysent="sysent.switch"
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trap "rm $sysdcl $syscompat $sysent" 0
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case $# in
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0) echo "Usage: $0 input-file" 1>&2
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exit 1
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;;
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esac
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awk < $1 "
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BEGIN {
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sysdcl = \"$sysdcl\"
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syscompat = \"$syscompat\"
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sysent = \"$sysent\"
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sysnames = \"$sysnames\"
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syshdr = \"$syshdr\"
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compat = \"$compat\"
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infile = \"$1\"
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"'
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printf "/*\n * System call switch table.\n *\n" > sysdcl
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printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysdcl
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printf "\n#ifdef %s\n", compat > syscompat
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printf "#define compat(n, name) n, __CONCAT(o,name)\n\n" > syscompat
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printf "/*\n * System call names.\n *\n" > sysnames
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printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
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printf "/*\n * System call numbers.\n *\n" > syshdr
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printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
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}
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NR == 1 {
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printf " * created from%s\n */\n\n", $0 > sysdcl
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printf "#include <sys/param.h>\n" > sysdcl
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printf "#include <sys/systm.h>\n\n" > sysdcl
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printf "int\tnosys();\n\n" > sysdcl
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printf "struct sysent sysent[] = {\n" > sysent
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printf " * created from%s\n */\n\n", $0 > sysnames
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printf "char *syscallnames[] = {\n" > sysnames
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printf " * created from%s\n */\n\n", $0 > syshdr
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next
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}
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NF == 0 || $1 ~ /^;/ {
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next
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}
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$1 ~ /^#[ ]*if/ {
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print > sysent
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print > sysdcl
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print > syscompat
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print > sysnames
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savesyscall = syscall
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next
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}
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$1 ~ /^#[ ]*else/ {
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print > sysent
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print > sysdcl
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print > syscompat
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print > sysnames
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syscall = savesyscall
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next
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}
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$1 ~ /^#/ {
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print > sysent
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print > sysdcl
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print > syscompat
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print > sysnames
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next
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}
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syscall != $1 {
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printf "%s: line %d: syscall number out of sync at %d\n", \
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infile, NR, syscall
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printf "line is:\n"
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print
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exit 1
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}
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{ comment = $4
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for (i = 5; i <= NF; i++)
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comment = comment " " $i
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if (NF < 5)
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$5 = $4
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}
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$2 == "STD" || $2 == "NODEF" {
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printf("int\t%s();\n", $4) > sysdcl
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printf("\t{ %d, %s },\t\t\t/* %d = %s */\n", \
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$3, $4, syscall, $5) > sysent
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printf("\t\"%s\",\t\t\t/* %d = %s */\n", \
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$5, syscall, $5) > sysnames
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if ($2 == "STD")
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printf("#define\tSYS_%s\t%d\n", \
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$5, syscall) > syshdr
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syscall++
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next
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}
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$2 == "COMPAT" {
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printf("int\to%s();\n", $4) > syscompat
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printf("\t{ compat(%d,%s) },\t\t/* %d = old %s */\n", \
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$3, $4, syscall, $5) > sysent
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printf("\t\"old.%s\",\t\t/* %d = old %s */\n", \
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$5, syscall, $5) > sysnames
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printf("\t\t\t\t/* %d is old %s */\n", \
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syscall, comment) > syshdr
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syscall++
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next
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}
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$2 == "LIBCOMPAT" {
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printf("int\to%s();\n", $4) > syscompat
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printf("\t{ compat(%d,%s) },\t\t/* %d = old %s */\n", \
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$3, $4, syscall, $5) > sysent
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printf("\t\"old.%s\",\t\t/* %d = old %s */\n", \
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$5, syscall, $5) > sysnames
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printf("#define\tSYS_%s\t%d\t/* compatibility; still used by libc */\n", \
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$5, syscall) > syshdr
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syscall++
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next
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}
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$2 == "OBSOL" {
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printf("\t{ 0, nosys },\t\t\t/* %d = obsolete %s */\n", \
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syscall, comment) > sysent
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printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n", \
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$4, syscall, comment) > sysnames
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printf("\t\t\t\t/* %d is obsolete %s */\n", \
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syscall, comment) > syshdr
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syscall++
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next
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}
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$2 == "UNIMPL" {
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printf("\t{ 0, nosys },\t\t\t/* %d = %s */\n", \
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syscall, comment) > sysent
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printf("\t\"#%d\",\t\t\t/* %d = %s */\n", \
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syscall, syscall, comment) > sysnames
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syscall++
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next
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}
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{
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printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
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exit 1
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}
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END {
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printf("\n#else /* %s */\n", compat) > syscompat
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printf("#define compat(n, name) 0, nosys\n") > syscompat
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printf("#endif /* %s */\n\n", compat) > syscompat
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printf("};\n\n") > sysent
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printf("int\tnsysent = sizeof(sysent) / sizeof(sysent[0]);\n") > sysent
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printf("};\n") > sysnames
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} '
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cat $sysdcl $syscompat $sysent >$syssw
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chmod 444 $sysnames $syshdr $syssw
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