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freebsd-nq/sys/kern/makesyscalls.sh
Marcel Moolenaar 49ead724c6 Fix breakage caused by previous commit. The lkmnosys and lkmressys 
syscalls are of type NODEF but not in a way that fits the given
definition of that type. The exact difference of lkmressys and
lkmnosys is unclear, which makes it all the more confusing. A
reevaluation of what we have and what we really need is in order.

Spotted by: Maxime Henrion <mux@qualys.com>
Pointy hat: marcel
2001-10-07 00:16:31 +00:00

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#! /bin/sh -
# @(#)makesyscalls.sh 8.1 (Berkeley) 6/10/93
# $FreeBSD$
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 = \"$1\"
"'
printf "/*\n * System call switch table.\n *\n" > syssw
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
printf " * \$\FreeBSD\$\n" > syssw
printf "/*\n * System call prototypes.\n *\n" > sysarg
printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
printf " * \$\FreeBSD\$\n" > sysarg
printf "\n#ifdef %s\n\n", compat > syscompat
printf "/*\n * System call names.\n *\n" > sysnames
printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
printf " * \$\FreeBSD\$\n" > sysnames
printf "/*\n * System call numbers.\n *\n" > syshdr
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
printf " * \$\FreeBSD\$\n" > syshdr
printf "# FreeBSD system call names.\n" > sysmk
printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
printf "# \$\FreeBSD\$\n" > sysmk
printf "/*\n * System call hiders.\n *\n" > syshide
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshide
printf " * \$\FreeBSD\$\n" > syshide
}
NR == 1 {
gsub("[$]FreeBSD: ", "", $0)
gsub(" [$]", "", $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 "#include <sys/acl.h>\n\n" > sysarg
printf "struct proc;\n\n" > sysarg
printf "struct thread;\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 "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
printf "#define\tPADL_(t)\t0\n" > sysarg
printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
printf "#else\n" > sysarg
printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
printf "#define\tPADR_(t)\t0\n" > sysarg
printf "#endif\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 != $1 {
printf "%s: line %d: syscall number out of sync at %d\n",
infile, NR, syscall
printf "line is:\n"
print
exit 1
}
function align_sysent_comment(column) {
printf("\t") > sysent
column = column + 8 - column % 8
while (column < 56) {
printf("\t") > sysent
column = column + 8
}
}
function parserr(was, wanted) {
printf "%s: line %d: unexpected %s (expected %s)\n",
infile, NR, was, wanted
exit 1
}
function parseline() {
f=4 # toss number and type
argc= 0;
argssize = "0"
if ($NF != "}") {
funcalias=$(NF-2)
argalias=$(NF-1)
rettype=$NF
end=NF-3
} else {
funcalias=""
argalias=""
rettype="int"
end=NF
}
if ($2 == "NODEF") {
funcname=$4
argssize = "AS(" $6 ")"
return
}
if ($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")
argname[argc]=$f;
f += 2; # skip name, and any comma
}
if (argc != 0)
argssize = "AS(" argalias ")"
}
{ comment = $4
if (NF < 7)
for (i = 5; i <= NF; i++)
comment = comment " " $i
}
# The 'M' type prefix
#
{
mpsafe = "SYF_MPSAFE | ";
if ($2 == "MSTD") {
$2 = "STD";
} else if ($2 == "MNODEF") {
$2 = "NODEF";
} else if ($2 == "MNOARGS") {
$2 = "NOARGS";
} else if ($2 == "MNOPROTO") {
$2 = "NOPROTO";
} else if ($2 == "MNOIMPL") {
$2 = "NOIMPL";
} else if ($2 == "MNOSTD") {
$2 = "NOSTD";
} else if ($2 == "MCOMPAT") {
$2 = "COMPAT";
} else if ($2 == "MCPT_NOA") {
$2 = "CPT_NOA";
} else if ($2 == "MLIBCOMPAT") {
$2 = "LIBCOMPAT";
} else if ($2 == "MOBSOL") {
$2 = "OBSOL";
} else if ($2 == "MUNIMPL") {
$2 = "UNIMPL";
} else {
mpsafe = "";
}
}
$2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "NOPROTO" \
|| $2 == "NOIMPL" || $2 == "NOSTD" {
parseline()
if ((!nosys || funcname != "nosys") && \
(funcname != "lkmnosys") && (funcname != "lkmressys")) {
if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
printf("struct %s {\n", argalias) > sysarg
for (i = 1; i <= argc; i++)
printf("\tchar %s_l_[PADL_(%s)]; " \
"%s %s; char %s_r_[PADR_(%s)];\n",
argname[i], argtype[i],
argtype[i], argname[i],
argname[i], argtype[i]) > sysarg
printf("};\n") > sysarg
}
else if ($2 != "NOARGS" && $2 != "NOPROTO" && \
$2 != "NODEF")
printf("struct %s {\n\tregister_t dummy;\n};\n",
argalias) > sysarg
}
if (($2 != "NOPROTO" && $2 != "NODEF" && \
(funcname != "nosys" || !nosys)) || \
(funcname == "lkmnosys" && !lkmnosys) || \
funcname == "lkmressys") {
printf("%s\t%s __P((struct thread *, struct %s *))",
rettype, funcname, argalias) > sysdcl
printf(";\n") > sysdcl
}
if (funcname == "nosys")
nosys = 1
if (funcname == "lkmnosys")
lkmnosys = 1
printf("\t{ %s%s, (sy_call_t *)", mpsafe, argssize) > sysent
column = 8 + 2 + length(mpsafe) + length(argssize) + 15
if ($2 == "NOIMPL") {
printf("%s },", "nosys") > sysent
column = column + length("nosys") + 3
} else if ($2 == "NOSTD") {
printf("%s },", "lkmressys") > sysent
column = column + length("lkmressys") + 3
} else {
printf("%s },", funcname) > sysent
column = column + length(funcname) + 3
}
align_sysent_comment(column)
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 %s {\n", argalias) > syscompat
for (i = 1; i <= argc; i++)
printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
"char %s_r_[PADR_(%s)];\n",
argname[i], argtype[i],
argtype[i], argname[i],
argname[i], argtype[i]) > syscompat
printf("};\n") > syscompat
}
else if($2 != "CPT_NOA")
printf("struct %s {\n\tregister_t dummy;\n};\n",
argalias) > sysarg
printf("%s\to%s __P((struct thread *, struct %s *));\n",
rettype, funcname, argalias) > syscompatdcl
printf("\t{ compat(%s%s,%s) },",
mpsafe, argssize, funcname) > sysent
align_sysent_comment(8 + 9 + length(mpsafe) + \
length(argssize) + 1 + length(funcname) + 4)
printf("/* %d = old %s */\n", 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(%s%s,%s) },",
mpsafe, argssize, funcname) > sysent
align_sysent_comment(8 + 9 + length(mpsafe) + \
length(argssize) + 1 + length(funcname) + 4)
printf("/* %d = old %s */\n", 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 },") > sysent
align_sysent_comment(34)
printf("/* %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 {
printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
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("#undef PADL_\n") > syscompatdcl
printf("#undef PADR_\n") > syscompatdcl
printf("\n#endif /* !%s */\n", sysproto_h) > syscompatdcl
printf("\n") > sysmk
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
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