xref: /dragonfly/sys/kern/makesyscalls.sh (revision fcce2b94) 
1#! /bin/sh -
2#	@(#)makesyscalls.sh	8.1 (Berkeley) 6/10/93
3# $FreeBSD: src/sys/kern/makesyscalls.sh,v 1.39.2.4 2001/10/20 09:01:24 marcel Exp $
4# $DragonFly: src/sys/kern/makesyscalls.sh,v 1.15 2006/06/30 20:41:08 eirikn Exp $
5
6set -e
7
8# name of compat option:
9compat=COMPAT_43
10# name of DragonFly 1.2 compat option
11compatdf12=COMPAT_DF12
12
13# output files:
14sysnames="syscalls.c"
15sysproto="../sys/sysproto.h"
16sysunion="../sys/sysunion.h"
17sysproto_h=_SYS_SYSPROTO_H_
18syshdr="../sys/syscall.h"
19sysmk="../sys/syscall.mk"
20syssw="init_sysent.c"
21syshide="../sys/syscall-hide.h"
22syscallprefix="SYS_"
23switchname="sysent"
24namesname="syscallnames"
25
26# tmp files:
27sysdcl="sysent.dcl.$$"
28syscompat="sysent.compat.$$"
29syscompatdf12="sysent.compatdf12.$$"
30syscompatdcl="sysent.compatdcl.$$"
31syscompatdcldf12="sysent.compatdcldf12.$$"
32sysent="sysent.switch.$$"
33sysinc="sysinc.switch.$$"
34sysarg="sysarg.switch.$$"
35sysun="sysunion.switch.$$"
36
37trap "rm $sysdcl $syscompat $syscompatdf12 $syscompatdcl $syscompatdcldf12 $sysent $sysinc $sysarg $sysun" 0
38
39touch $sysdcl $syscompat $syscompatdf12 $syscompatdcl $syscompatdf12 $sysent $sysinc $sysarg $sysun
40
41case $# in
42    0)	echo "Usage: $0 input-file <config-file>" 1>&2
43	exit 1
44	;;
45esac
46
47if [ -n "$2" -a -f "$2" ]; then
48	. $2
49fi
50
51sed -e '
52s/\$//g
53:join
54	/\\$/{a\
55
56	N
57	s/\\\n//
58	b join
59	}
602,${
61	/^#/!s/\([{}()*,]\)/ \1 /g
62}
63' < $1 | awk "
64	BEGIN {
65		sysdcl = \"$sysdcl\"
66		sysproto = \"$sysproto\"
67		sysproto_h = \"$sysproto_h\"
68		syscompat = \"$syscompat\"
69		syscompatdf12 = \"$syscompatdf12\"
70		syscompatdcl = \"$syscompatdcl\"
71		syscompatdcldf12 = \"$syscompatdcldf12\"
72		sysent = \"$sysent\"
73		syssw = \"$syssw\"
74		sysinc = \"$sysinc\"
75		sysarg = \"$sysarg\"
76		sysun = \"$sysun\"
77		sysnames = \"$sysnames\"
78		syshdr = \"$syshdr\"
79		sysmk = \"$sysmk\"
80		compat = \"$compat\"
81		compatdf12 = \"$compatdf12\"
82		syshide = \"$syshide\"
83		syscallprefix = \"$syscallprefix\"
84		switchname = \"$switchname\"
85		namesname = \"$namesname\"
86		infile = \"$1\"
87		"'
88
89		printf "/*\n * System call switch table.\n *\n" > syssw
90		printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
91		printf " * \$\DragonFly\$\n" > syssw
92
93		printf "/*\n * System call prototypes.\n *\n" > sysarg
94		printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
95		printf " * \$\DragonFly\$\n" > sysarg
96
97		printf "\n#ifdef %s\n\n", compat > syscompat
98		printf "\n#ifdef %s\n\n", compatdf12 > syscompatdf12
99
100		printf "/*\n * System call names.\n *\n" > sysnames
101		printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
102		printf " * \$\DragonFly\$\n" > sysnames
103
104		printf "/*\n * System call numbers.\n *\n" > syshdr
105		printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
106		printf " * \$\DragonFly\$\n" > syshdr
107		printf "# DragonFly system call names.\n" > sysmk
108		printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
109		printf "# \$\DragonFly\$\n" > sysmk
110		printf "/*\n * System call hiders.\n *\n" > syshide
111		printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshide
112		printf " * \$\DragonFly\$\n" > syshide
113
114		printf "/*\n * Union of syscall args for messaging.\n *\n" > sysun
115		printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysun
116		printf " * \$\DragonFly\$\n" > sysun
117		printf "\n#ifdef _KERNEL\n\n" > sysdcl
118		printf "\n#ifdef _KERNEL\n\n" > syscompatdcl
119		printf "\n#ifdef _KERNEL\n\n" > syscompatdcldf12
120	}
121	NR == 1 {
122		gsub("[$]DragonFly: ", "", $0)
123		gsub(" [$]", "", $0)
124
125		printf " * created from%s\n */\n\n", $0 > syssw
126
127		printf "\n/* The casts are bogus but will do for now. */\n" > sysent
128		printf "struct sysent %s[] = {\n",switchname > sysent
129
130		printf " * created from%s\n */\n\n", $0 > sysarg
131		printf "#ifndef %s\n", sysproto_h > sysarg
132		printf "#define\t%s\n\n", sysproto_h > sysarg
133		printf "#include <sys/signal.h>\n\n" > sysarg
134		printf "#include <sys/acl.h>\n\n" > sysarg
135		printf "#include <sys/msgport.h>\n\n" > sysarg
136		printf "#include <sys/sysmsg.h>\n\n" > sysarg
137		printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
138		printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
139
140		printf " * created from%s\n */\n\n", $0 > sysnames
141		printf "char *%s[] = {\n", namesname > sysnames
142
143		printf " * created from%s\n */\n\n", $0 > syshdr
144
145		printf "# created from%s\nMIASM = ", $0 > sysmk
146
147		printf " * created from%s\n */\n\n", $0 > syshide
148		printf " * created from%s\n */\n\n", $0 > sysun
149		printf "union sysunion {\n" > sysun
150		printf "#ifdef _KERNEL /* header only applies in kernel */\n" > sysun
151		printf "\tstruct\tlwkt_msg lmsg;\n" > sysun
152		printf "\tstruct\tsysmsg sysmsg;\n" > sysun
153		printf "#endif\n" > sysun
154
155		next
156	}
157	NF == 0 || $1 ~ /^;/ {
158		next
159	}
160	$1 ~ /^#[ 	]*include/ {
161		print > sysinc
162		next
163	}
164	$1 ~ /^#[ 	]*if/ {
165		print > sysent
166		print > sysdcl
167		print > sysarg
168		print > syscompat
169		print > syscompatdf12
170		print > sysnames
171		print > syshide
172		print > sysun
173		savesyscall = syscall
174		next
175	}
176	$1 ~ /^#[ 	]*else/ {
177		print > sysent
178		print > sysdcl
179		print > sysarg
180		print > sysun
181		print > syscompat
182		print > syscompatdf12
183		print > sysnames
184		print > syshide
185		syscall = savesyscall
186		next
187	}
188	$1 ~ /^#/ {
189		print > sysent
190		print > sysdcl
191		print > sysarg
192		print > sysun
193		print > syscompat
194		print > syscompatdf12
195		print > sysnames
196		print > syshide
197		next
198	}
199	syscall != $1 {
200		printf "%s: line %d: syscall number out of sync at %d\n",
201		    infile, NR, syscall
202		printf "line is:\n"
203		print
204		exit 1
205	}
206	function align_sysent_comment(column) {
207		printf("\t") > sysent
208		column = column + 8 - column % 8
209		while (column < 56) {
210			printf("\t") > sysent
211			column = column + 8
212		}
213	}
214	function parserr(was, wanted) {
215		printf "%s: line %d: unexpected %s (expected %s)\n",
216		    infile, NR, was, wanted
217		exit 1
218	}
219	function parseline() {
220		f=4			# toss number and type
221		argc= 0;
222		argssize = "0"
223		if ($NF != "}") {
224			funcalias=$(NF-2)
225			argalias=$(NF-1)
226			rettype=$NF
227			end=NF-3
228		} else {
229			funcalias=""
230			argalias=""
231			rettype="int"
232			end=NF
233		}
234		if ($2 == "NODEF") {
235			funcname=$4
236			argssize = "AS(" $6 ")"
237			return
238		}
239		if ($f != "{")
240			parserr($f, "{")
241		f++
242		if ($end != "}")
243			parserr($end, "}")
244		end--
245		if ($end != ";")
246			parserr($end, ";")
247		end--
248		if ($end != ")")
249			parserr($end, ")")
250		end--
251
252		f++	#function return type
253
254		funcname=$f
255		usefuncname=$f
256		if (funcalias == "")
257			funcalias = funcname
258		if (argalias == "") {
259			argalias = funcname "_args"
260			if ($2 == "COMPAT") {
261				argalias = "o" argalias
262				usefuncname = "sys_o" funcname
263			}
264			if ($2 == "COMPAT_DF12") {
265				argalias = "dfbsd12_" argalias
266				usefuncname = "sys_dfbsd12_" funcname
267			}
268		}
269		f++
270
271		if ($f != "(")
272			parserr($f, ")")
273		f++
274
275		if (f == end) {
276			if ($f != "void")
277				parserr($f, "argument definition")
278			return
279		}
280
281		while (f <= end) {
282			argc++
283			argtype[argc]=""
284			oldf=""
285			while (f < end && $(f+1) != ",") {
286				if (argtype[argc] != "" && oldf != "*")
287					argtype[argc] = argtype[argc]" ";
288				argtype[argc] = argtype[argc]$f;
289				oldf = $f;
290				f++
291			}
292			if (argtype[argc] == "")
293				parserr($f, "argument definition")
294			argname[argc]=$f;
295			f += 2;			# skip name, and any comma
296		}
297		if (argc != 0)
298			argssize = "AS(" argalias ")"
299	}
300	{	comment = $4
301		if (NF < 7)
302			for (i = 5; i <= NF; i++)
303				comment = comment " " $i
304	}
305	# if the "MPSAFE" keyword is found, note it and shift the line
306	mpsafe = ""
307	$2 == "MPSAFE" {
308		for (i = 2; i <= NF; i++)
309			$i = $(i + 1);
310		NF -= 1;
311		mpsafe = "SYF_MPSAFE | "
312	}
313	$2 == "STD" || $2 == "NODEF" || $2 == "NOARGS"  || $2 == "NOPROTO" \
314	    || $2 == "NOIMPL" {
315		parseline()
316		if ((!nosys || funcname != "nosys") && \
317		    (funcname != "lkmnosys")) {
318			if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
319				printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
320				printf("struct\t%s {\n", argalias) > sysarg
321				printf("#ifdef _KERNEL\n") > sysarg
322				printf("\tstruct sysmsg sysmsg;\n") > sysarg
323				printf("#endif\n") > sysarg
324				for (i = 1; i <= argc; i++)
325					printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
326					    argtype[i], argname[i],
327					    argname[i], argtype[i]) > sysarg
328				printf("};\n") > sysarg
329			}
330			else if ($2 != "NOARGS" && $2 != "NOPROTO" && \
331			    $2 != "NODEF") {
332				printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
333				printf("struct\t%s {\n", argalias) > sysarg
334				printf("#ifdef _KERNEL\n") > sysarg
335				printf("\tstruct sysmsg sysmsg;\n") > sysarg
336				printf("#endif\n") > sysarg
337				printf("\tregister_t dummy;\n") > sysarg
338				printf("};\n") > sysarg
339			}
340		}
341		if (($2 != "NOPROTO" && $2 != "NODEF" && \
342		    (funcname != "nosys" || !nosys)) || \
343		    (funcname == "lkmnosys" && !lkmnosys) || \
344		    funcname == "lkmressys") {
345			printf("%s\tsys_%s (struct %s *)",
346			    rettype, funcname, argalias) > sysdcl
347			printf(";\n") > sysdcl
348		}
349		if (funcname == "nosys")
350			nosys = 1
351		if (funcname == "lkmnosys")
352			lkmnosys = 1
353		printf("\t{ %s%s, (sy_call_t *)", mpsafe, argssize) > sysent
354		column = 8 + 2 + length(mpsafe) + length(argssize) + 15
355	 	if ($2 != "NOIMPL") {
356			printf("sys_%s },", funcname) > sysent
357			column = column + length(funcname) + 7
358		} else {
359			printf("sys_%s },", "nosys") > sysent
360			column = column + length("nosys") + 7
361		}
362		align_sysent_comment(column)
363		printf("/* %d = %s */\n", syscall, funcalias) > sysent
364		printf("\t\"%s\",\t\t\t/* %d = %s */\n",
365		    funcalias, syscall, funcalias) > sysnames
366		if ($2 != "NODEF") {
367			printf("#define\t%s%s\t%d\n", syscallprefix,
368		    	    funcalias, syscall) > syshdr
369			printf(" \\\n\t%s.o", funcalias) > sysmk
370		}
371		if ($3 != "NOHIDE")
372			printf("HIDE_%s(%s)\n", $3, funcname) > syshide
373		syscall++
374		next
375	}
376	$2 == "COMPAT" || $2 == "CPT_NOA" {
377		ncompat++
378		parseline()
379		if (argc != 0 && $2 != "CPT_NOA") {
380			printf("#ifdef %s\n", compat) > sysun
381			printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
382			printf("#endif\n") > sysun
383			printf("struct\t%s {\n", argalias) > syscompat
384			printf("#ifdef _KERNEL\n") > syscompat
385			printf("\tstruct sysmsg sysmsg;\n") > syscompat
386			printf("#endif\n") > syscompat
387			for (i = 1; i <= argc; i++)
388				printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
389				    argtype[i], argname[i],
390				    argname[i], argtype[i]) > syscompat
391			printf("};\n") > syscompat
392		}
393		else if($2 != "CPT_NOA") {
394			printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
395			printf("struct\t%s {\n", argalias) > sysarg
396			printf("#ifdef _KERNEL\n") > sysarg
397			printf("\tstruct sysmsg sysmsg;\n") > sysarg
398			printf("#endif\n") > sysarg
399			printf("\tregister_t dummy;\n") > sysarg
400			printf("};\n") > sysarg
401		}
402		printf("%s\tsys_o%s (struct %s *);\n",
403		    rettype, funcname, argalias) > syscompatdcl
404		printf("\t{ compat(%s%s,%s) },",
405		    mpsafe, argssize, funcname) > sysent
406		align_sysent_comment(8 + 9 + length(mpsafe) + \
407		    length(argssize) + 1 + length(funcname) + 4)
408		printf("/* %d = old %s */\n", syscall, funcalias) > sysent
409		printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
410		    funcalias, syscall, funcalias) > sysnames
411		printf("\t\t\t\t/* %d is old %s */\n",
412		    syscall, funcalias) > syshdr
413		if ($3 != "NOHIDE")
414			printf("HIDE_%s(%s)\n", $3, funcname) > syshide
415		syscall++
416		next
417	}
418	$2 == "COMPAT_DF12" {
419		ncompatdf12++
420		parseline()
421		if (argc != 0) {
422			printf("#ifdef %s\n", compatdf12) > sysun
423			printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
424			printf("#endif\n") > sysun
425			printf("struct\t%s {\n", argalias) > syscompatdf12
426			printf("#ifdef _KERNEL\n") > syscompatdf12
427			printf("\tstruct sysmsg sysmsg;\n") > syscompatdf12
428			printf("#endif\n") > syscompatdf12
429			for (i = 1; i <= argc; i++)
430				printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
431				    argtype[i], argname[i],
432				    argname[i], argtype[i]) > syscompatdf12
433			printf("};\n") > syscompatdf12
434		}
435		else {
436			printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
437			printf("struct\t%s {\n", argalias) > sysarg
438			printf("#ifdef _KERNEL\n") > sysarg
439			printf("\tstruct sysmsg sysmsg;\n") > sysarg
440			printf("#endif\n") > sysarg
441			printf("\tregister_t dummy;\n") > sysarg
442			printf("};\n") > sysarg
443		}
444		printf("%s\tsys_dfbsd12_%s (struct %s *);\n",
445		    rettype, funcname, argalias) > syscompatdcldf12
446		printf("\t{ compatdf12(%s%s,%s) },",
447		    mpsafe, argssize, funcname) > sysent
448		align_sysent_comment(8 + 9 + length(mpsafe) + \
449		    length(argssize) + 1 + length(funcname) + 4)
450		printf("/* %d = old %s */\n", syscall, funcalias) > sysent
451		printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
452		    funcalias, syscall, funcalias) > sysnames
453		printf("\t\t\t\t/* %d is old %s */\n",
454		    syscall, funcalias) > syshdr
455		if ($3 != "NOHIDE")
456			printf("HIDE_%s(%s)\n", $3, funcname) > syshide
457		syscall++
458		next
459	}
460	$2 == "LIBCOMPAT" {
461		ncompat++
462		parseline()
463		printf("%s\tsys_o%s();\n", rettype, funcname) > syscompatdcl
464		printf("\t{ compat(%s%s,%s) },",
465		    mpsafe, argssize, funcname) > sysent
466		align_sysent_comment(8 + 9 + length(mpsafe) + \
467		    length(argssize) + 1 + length(funcname) + 4)
468		printf("/* %d = old %s */\n", syscall, funcalias) > sysent
469		printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
470		    funcalias, syscall, funcalias) > sysnames
471		printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
472		    syscallprefix, funcalias, syscall) > syshdr
473		printf(" \\\n\t%s.o", funcalias) > sysmk
474		if ($3 != "NOHIDE")
475			printf("HIDE_%s(%s)\n", $3, funcname) > syshide
476		syscall++
477		next
478	}
479	$2 == "OBSOL" {
480		printf("\t{ 0, (sy_call_t *)sys_nosys },") > sysent
481		align_sysent_comment(37)
482		printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
483		printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
484		    $4, syscall, comment) > sysnames
485		printf("\t\t\t\t/* %d is obsolete %s */\n",
486		    syscall, comment) > syshdr
487		if ($3 != "NOHIDE")
488			printf("HIDE_%s(%s)\n", $3, $4) > syshide
489		syscall++
490		next
491	}
492	$2 == "UNIMPL" {
493		printf("\t{ 0, (sy_call_t *)sys_nosys },\t\t\t/* %d = %s */\n",
494		    syscall, comment) > sysent
495		printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
496		    syscall, syscall, comment) > sysnames
497		if ($3 != "NOHIDE")
498			printf("HIDE_%s(%s)\n", $3, $4) > syshide
499		syscall++
500		next
501	}
502	{
503		printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
504		exit 1
505	}
506	END {
507		printf "\n#define AS(name) ((sizeof(struct name) - sizeof(struct sysmsg)) / sizeof(register_t))\n" > sysinc
508		if (ncompat != 0) {
509			printf "#include \"opt_compat.h\"\n\n" > syssw
510			printf "\n#ifdef %s\n", compat > sysinc
511			printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(sys_,__CONCAT(o,name))\n" > sysinc
512			printf "#else\n" > sysinc
513			printf "#define compat(n, name) 0, (sy_call_t *)sys_nosys\n" > sysinc
514			printf "#endif\n" > sysinc
515		}
516
517		if (ncompatdf12 != 0) {
518			printf "#include \"opt_compatdf12.h\"\n\n" > syssw
519			printf "\n#ifdef %s\n", compatdf12 > sysinc
520			printf "#define compatdf12(n, name) n, (sy_call_t *)__CONCAT(sys_,__CONCAT(dfbsd12_,name))\n" > sysinc
521			printf "#else\n" > sysinc
522			printf "#define compatdf12(n, name) 0, (sy_call_t *)sys_nosys\n" > sysinc
523			printf "#endif\n" > sysinc
524		}
525
526		printf("\n#endif /* _KERNEL */\n") > syscompatdcl
527		printf("\n#endif /* _KERNEL */\n") > syscompatdcldf12
528		printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
529		printf("\n#endif /* %s */\n\n", compatdf12) > syscompatdcldf12
530
531		printf("\n") > sysmk
532		printf("};\n") > sysent
533		printf("};\n") > sysnames
534		printf("};\n") > sysun
535		printf("\n#endif /* !%s */\n", sysproto_h) > sysdcl
536		printf("#undef PAD_\n") > sysdcl
537		printf("\n#endif /* _KERNEL */\n") > sysdcl
538		printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
539		    > syshdr
540	} '
541
542cat $sysinc $sysent >> $syssw
543cat $sysarg $syscompat $syscompatdcl $syscompatdf12 $syscompatdcldf12 $sysdcl > $sysproto
544cat $sysun > $sysunion
545