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freebsd/sys/kern/makesyscalls.sh
Bruce Evans e7c1c309fa Don't generate COMPAT_43 cruft if there are no COMPAT_43 syscalls.
In particular, don't generate an include of "opt_compat.h" if it
wouldn't affect anything we create.  This will fix recent breakage
of the ibcs2 LKM.  The ibcs2 syscall files were not regenerated
properly, so the LKM didn't break immediately when we started
generating this extraneous include.
1998-06-09 03:32:05 +00:00

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#! /bin/sh -
# @(#)makesyscalls.sh 8.1 (Berkeley) 6/10/93
# $Id: makesyscalls.sh,v 1.33 1998/06/08 11:02:00 bde Exp $
set -e
# name of compat option:
compat=COMPAT_43
# output files:
sysnames="syscalls.c"
sysproto="../sys/sysproto.h"
sysproto_h=_SYS_SYSPROTO_H_
syshdr="../sys/syscall.h"
sysmk="../sys/syscall.mk"
syssw="init_sysent.c"
syshide="../sys/syscall-hide.h"
syscallprefix="SYS_"
switchname="sysent"
namesname="syscallnames"
# tmp files:
sysdcl="sysent.dcl.$$"
syscompat="sysent.compat.$$"
syscompatdcl="sysent.compatdcl.$$"
sysent="sysent.switch.$$"
sysinc="sysinc.switch.$$"
sysarg="sysarg.switch.$$"
trap "rm $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg" 0
touch $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg
case $# in
0) echo "Usage: $0 input-file <config-file>" 1>&2
exit 1
;;
esac
if [ -n "$2" -a -f "$2" ]; then
. $2
fi
sed -e '
s/\$//g
:join
/\\$/{a\
N
s/\\\n//
b join
}
2,${
/^#/!s/\([{}()*,]\)/ \1 /g
}
' < $1 | awk "
BEGIN {
sysdcl = \"$sysdcl\"
sysproto = \"$sysproto\"
sysproto_h = \"$sysproto_h\"
syscompat = \"$syscompat\"
syscompatdcl = \"$syscompatdcl\"
sysent = \"$sysent\"
syssw = \"$syssw\"
sysinc = \"$sysinc\"
sysarg = \"$sysarg\"
sysnames = \"$sysnames\"
syshdr = \"$syshdr\"
sysmk = \"$sysmk\"
compat = \"$compat\"
syshide = \"$syshide\"
syscallprefix = \"$syscallprefix\"
switchname = \"$switchname\"
namesname = \"$namesname\"
infile = \"$1\"
"'
printf "/*\n * System call switch table.\n *\n" > syssw
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
printf "/*\n * System call prototypes.\n *\n" > sysarg
printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
printf "\n#ifdef %s\n\n", compat > syscompat
printf "/*\n * System call names.\n *\n" > sysnames
printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
printf "/*\n * System call numbers.\n *\n" > syshdr
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
printf "# FreeBSD system call names.\n" > sysmk
printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
printf "/*\n * System call hiders.\n *\n" > syshide
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshide
}
NR == 1 {
gsub("[$]Id: ", "", $0)
gsub(" [$]", "", $0)
printf " * created from%s\n */\n\n", $0 > syssw
printf "\n/* The casts are bogus but will do for now. */\n" > sysent
printf "struct sysent %s[] = {\n",switchname > sysent
printf " * created from%s\n */\n\n", $0 > sysarg
printf "#ifndef %s\n", sysproto_h > sysarg
printf "#define\t%s\n\n", sysproto_h > sysarg
printf "#include <sys/signal.h>\n\n" > sysarg
printf "struct proc;\n\n" > sysarg
printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
printf " * created from%s\n */\n\n", $0 > sysnames
printf "char *%s[] = {\n", namesname > sysnames
printf " * created from%s\n */\n\n", $0 > syshdr
printf "# created from%s\nMIASM = ", $0 > sysmk
printf " * created from%s\n */\n\n", $0 > syshide
next
}
NF == 0 || $1 ~ /^;/ {
next
}
$1 ~ /^#[ ]*include/ {
print > sysinc
next
}
$1 ~ /^#[ ]*if/ {
print > sysent
print > sysdcl
print > sysarg
print > syscompat
print > sysnames
print > syshide
savesyscall = syscall
next
}
$1 ~ /^#[ ]*else/ {
print > sysent
print > sysdcl
print > sysarg
print > syscompat
print > sysnames
print > syshide
syscall = savesyscall
next
}
$1 ~ /^#/ {
print > sysent
print > sysdcl
print > sysarg
print > syscompat
print > sysnames
print > syshide
next
}
syscall != $1 {
printf "%s: line %d: syscall number out of sync at %d\n",
infile, NR, syscall
printf "line is:\n"
print
exit 1
}
function parserr(was, wanted) {
printf "%s: line %d: unexpected %s (expected %s)\n",
infile, NR, was, wanted
exit 1
}
function parseline() {
f=4 # toss number and type
argc= 0;
bigargc = 0;
if ($NF != "}") {
funcalias=$(NF-2)
argalias=$(NF-1)
rettype=$NF
end=NF-3
} else {
funcalias=""
argalias=""
rettype="int"
end=NF
}
if ($2 == "NODEF") {
funcname=$4
return
}
if ($f != "{")
parserr($f, "{")
f++
if ($end != "}")
parserr($end, "}")
end--
if ($end != ";")
parserr($end, ";")
end--
if ($end != ")")
parserr($end, ")")
end--
f++ #function return type
funcname=$f
if (funcalias == "")
funcalias = funcname
if (argalias == "") {
argalias = funcname "_args"
if ($2 == "COMPAT")
argalias = "o" argalias
}
f++
if ($f != "(")
parserr($f, ")")
f++
if (f == end) {
if ($f != "void")
parserr($f, "argument definition")
return
}
while (f <= end) {
argc++
argtype[argc]=""
oldf=""
while (f < end && $(f+1) != ",") {
if (argtype[argc] != "" && oldf != "*")
argtype[argc] = argtype[argc]" ";
argtype[argc] = argtype[argc]$f;
oldf = $f;
f++
}
if (argtype[argc] == "")
parserr($f, "argument definition")
if (argtype[argc] == "off_t")
bigargc++
argname[argc]=$f;
f += 2; # skip name, and any comma
}
}
{ comment = $4
if (NF < 7)
for (i = 5; i <= NF; i++)
comment = comment " " $i
}
$2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "NOPROTO" \
|| $2 == "NOIMPL" {
parseline()
if ((!nosys || funcname != "nosys") && \
(funcname != "lkmnosys")) {
if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
printf("struct\t%s {\n", argalias) > sysarg
for (i = 1; i <= argc; i++)
printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
argtype[i], argname[i],
argname[i], argtype[i]) > sysarg
printf("};\n") > sysarg
}
else if($2 != "NOARGS" && $2 != "NOPROTO")
printf("struct\t%s {\n\tregister_t dummy;\n};\n",
argalias) > sysarg
}
if ($2 != "NOPROTO" && (!nosys || funcname != "nosys") && \
(!lkmnosys || funcname != "lkmnosys")) {
printf("%s\t%s __P((struct proc *, struct %s *))",
rettype, funcname, argalias) > sysdcl
if (funcname == "exit")
printf(" __dead2") > sysdcl
printf(";\n") > sysdcl
}
if (funcname == "nosys")
nosys = 1
if (funcname == "lkmnosys")
lkmnosys = 1
if ($2 != "NOIMPL") {
printf("\t{ %d, (sy_call_t *)%s },\t\t",
argc+bigargc, funcname) > sysent
if(length(funcname) < 11)
printf("\t") > sysent
printf("/* %d = %s */\n", syscall, funcalias) > sysent
} else {
printf("\t{ %d, (sy_call_t *)%s },\t\t",
argc+bigargc, "nosys") > sysent
if(length("nosys") < 11)
printf("\t") > sysent
printf("/* %d = %s */\n", syscall, funcalias) > sysent
}
printf("\t\"%s\",\t\t\t/* %d = %s */\n",
funcalias, syscall, funcalias) > sysnames
if ($2 != "NODEF") {
printf("#define\t%s%s\t%d\n", syscallprefix,
funcalias, syscall) > syshdr
printf(" \\\n\t%s.o", funcalias) > sysmk
}
if ($3 != "NOHIDE")
printf("HIDE_%s(%s)\n", $3, funcname) > syshide
syscall++
next
}
$2 == "COMPAT" || $2 == "CPT_NOA" {
ncompat++
parseline()
if (argc != 0 && $2 != "CPT_NOA") {
printf("struct\t%s {\n", argalias) > syscompat
for (i = 1; i <= argc; i++)
printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
argtype[i], argname[i],
argname[i], argtype[i]) > syscompat
printf("};\n") > syscompat
}
else if($2 != "CPT_NOA")
printf("struct\t%s {\n\tregister_t dummy;\n};\n",
argalias) > sysarg
printf("%s\to%s __P((struct proc *, struct %s *));\n",
rettype, funcname, argalias) > syscompatdcl
printf("\t{ compat(%d,%s) },\t\t/* %d = old %s */\n",
argc+bigargc, funcname, syscall, funcalias) > sysent
printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
funcalias, syscall, funcalias) > sysnames
printf("\t\t\t\t/* %d is old %s */\n",
syscall, funcalias) > syshdr
if ($3 != "NOHIDE")
printf("HIDE_%s(%s)\n", $3, funcname) > syshide
syscall++
next
}
$2 == "LIBCOMPAT" {
ncompat++
parseline()
printf("%s\to%s();\n", rettype, funcname) > syscompatdcl
printf("\t{ compat(%d,%s) },\t\t/* %d = old %s */\n",
argc+bigargc, funcname, syscall, funcalias) > sysent
printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
funcalias, syscall, funcalias) > sysnames
printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
syscallprefix, funcalias, syscall) > syshdr
printf(" \\\n\t%s.o", funcalias) > sysmk
if ($3 != "NOHIDE")
printf("HIDE_%s(%s)\n", $3, funcname) > syshide
syscall++
next
}
$2 == "OBSOL" {
printf("\t{ 0, (sy_call_t *)nosys },\t\t\t/* %d = obsolete %s */\n",
syscall, comment) > sysent
printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
$4, syscall, comment) > sysnames
printf("\t\t\t\t/* %d is obsolete %s */\n",
syscall, comment) > syshdr
if ($3 != "NOHIDE")
printf("HIDE_%s(%s)\n", $3, $4) > syshide
syscall++
next
}
$2 == "UNIMPL" {
printf("\t{ 0, (sy_call_t *)nosys },\t\t\t/* %d = %s */\n",
syscall, comment) > sysent
printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
syscall, syscall, comment) > sysnames
if ($3 != "NOHIDE")
printf("HIDE_%s(%s)\n", $3, $4) > syshide
syscall++
next
}
{
printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
exit 1
}
END {
if (ncompat != 0) {
printf "#include \"opt_compat.h\"\n\n" > syssw
printf "\n#ifdef %s\n", compat > sysinc
printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
printf "#else\n" > sysinc
printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
printf "#endif\n" > sysinc
}
printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
printf("#undef PAD_\n") > syscompatdcl
printf("\n#endif /* !%s */\n", sysproto_h) > syscompatdcl
printf("};\n") > sysent
printf("};\n") > sysnames
printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
> syshdr
} '
cat $sysinc $sysent >> $syssw
cat $sysarg $sysdcl $syscompat $syscompatdcl > $sysproto