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|
#! /bin/sh -
# @(#)makesyscalls.sh 8.1 (Berkeley) 6/10/93
# $Id: makesyscalls.sh,v 1.7 1994/09/13 02:21:48 wollman Exp $
set -e
# name of compat option:
compat=COMPAT_43
# output files:
sysnames="syscalls.c"
syshdr="../sys/syscall.h"
syssw="init_sysent.c"
syshide="../sys/syscall-hide.h"
# tmp files:
sysdcl="sysent.dcl"
syscompat="sysent.compat"
sysent="sysent.switch"
trap "rm $sysdcl $syscompat $sysent" 0
case $# in
0) echo "Usage: $0 input-file" 1>&2
exit 1
;;
esac
awk < $1 "
BEGIN {
sysdcl = \"$sysdcl\"
syscompat = \"$syscompat\"
sysent = \"$sysent\"
sysnames = \"$sysnames\"
syshdr = \"$syshdr\"
compat = \"$compat\"
syshide = \"$syshide\"
infile = \"$1\"
"'
printf "/*\n * System call switch table.\n *\n" > sysdcl
printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysdcl
printf "\n#ifdef %s\n", compat > syscompat
printf "#define compat(n, name) n, __CONCAT(o,name)\n\n" > syscompat
printf "/*\n * System call names.\n *\n" > sysnames
printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
printf "/*\n * System call numbers.\n *\n" > syshdr
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
printf "/*\n * System call hiders.\n *\n" > syshide
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshide
}
NR == 1 {
printf " * created from%s\n */\n\n", $0 > sysdcl
printf "#include <sys/param.h>\n" > sysdcl
printf "#include <sys/systm.h>\n" > sysdcl
printf "#include <sys/sysent.h>\n\n" > sysdcl
printf "struct sysent sysent[] = {\n" > sysent
printf " * created from%s\n */\n\n", $0 > sysnames
printf "char *syscallnames[] = {\n" > sysnames
printf " * created from%s\n */\n\n", $0 > syshdr
printf " * created from%s\n */\n\n", $0 > syshide
next
}
NF == 0 || $1 ~ /^;/ {
next
}
$1 ~ /^#[ ]*if/ {
print > sysent
print > sysdcl
print > syscompat
print > sysnames
print > syshide
savesyscall = syscall
next
}
$1 ~ /^#[ ]*else/ {
print > sysent
print > sysdcl
print > syscompat
print > sysnames
print > syshide
syscall = savesyscall
next
}
$1 ~ /^#/ {
print > sysent
print > sysdcl
print > syscompat
print > sysnames
print > syshide
next
}
syscall != $1 {
printf "%s: line %d: syscall number out of sync at %d\n", \
infile, NR, syscall
printf "line is:\n"
print
exit 1
}
{ comment = $5
for (i = 6; i <= NF; i++)
comment = comment " " $i
if (NF < 6)
$6 = $5
if ($4 != "NOHIDE")
printf("HIDE_%s(%s)\n", $4, $5) > syshide
}
$2 == "STD" || $2 == "NODEF" {
if (!nosys || $5 != "nosys")
printf("int\t%s();\n", $5) > sysdcl
if ($5 == "nosys")
nosys = 1
printf("\t{ %d, %s },\t\t\t/* %d = %s */\n", \
$3, $5, syscall, $6) > sysent
printf("\t\"%s\",\t\t\t/* %d = %s */\n", \
$6, syscall, $6) > sysnames
if ($2 == "STD")
printf("#define\tSYS_%s\t%d\n", \
$6, syscall) > syshdr
syscall++
next
}
$2 == "COMPAT" {
printf("int\to%s();\n", $5) > syscompat
printf("\t{ compat(%d,%s) },\t\t/* %d = old %s */\n", \
$3, $5, syscall, $6) > sysent
printf("\t\"old.%s\",\t\t/* %d = old %s */\n", \
$6, syscall, $6) > sysnames
printf("\t\t\t\t/* %d is old %s */\n", \
syscall, comment) > syshdr
syscall++
next
}
$2 == "LIBCOMPAT" {
printf("int\to%s();\n", $5) > syscompat
printf("\t{ compat(%d,%s) },\t\t/* %d = old %s */\n", \
$3, $5, syscall, $6) > sysent
printf("\t\"old.%s\",\t\t/* %d = old %s */\n", \
$6, syscall, $6) > sysnames
printf("#define\tSYS_%s\t%d\t/* compatibility; still used by libc */\n", \
$6, syscall) > syshdr
syscall++
next
}
$2 == "OBSOL" {
printf("\t{ 0, nosys },\t\t\t/* %d = obsolete %s */\n", \
syscall, comment) > sysent
printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n", \
$5, syscall, comment) > sysnames
printf("\t\t\t\t/* %d is obsolete %s */\n", \
syscall, comment) > syshdr
syscall++
next
}
$2 == "UNIMPL" {
printf("\t{ 0, nosys },\t\t\t/* %d = %s */\n", \
syscall, comment) > sysent
printf("\t\"#%d\",\t\t\t/* %d = %s */\n", \
syscall, syscall, comment) > sysnames
syscall++
next
}
{
printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
exit 1
}
END {
printf("\n#else /* %s */\n", compat) > syscompat
printf("#define compat(n, name) 0, nosys\n") > syscompat
printf("#endif /* %s */\n\n", compat) > syscompat
printf("};\n\n") > sysent
printf ("struct sysentvec aout_sysvec = {\n") > sysent
printf ("\tsizeof (sysent) / sizeof (sysent[0]),\n") > sysent
printf ("\tsysent,\n") > sysent
printf ("\t0,\n\t0,\n\t0\n};\n") > sysent
printf("};\n") > sysnames
} '
cat $sysdcl $syscompat $sysent >$syssw
chmod 444 $sysnames $syshdr $syssw $syshide
|
