xref: /dragonfly/sys/kern/makesyscalls.sh (revision d8d5b238) 
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
5set -e
6
7# output files:
8sysnames="syscalls.c"
9sysproto="../sys/sysproto.h"
10sysunion="../sys/sysunion.h"
11sysproto_h=_SYS_SYSPROTO_H_
12syshdr="../sys/syscall.h"
13sysmk="../sys/syscall.mk"
14syssw="init_sysent.c"
15syscallprefix="SYS_"
16switchname="sysent"
17namesname="syscallnames"
18
19# tmp files:
20sysdcl="sysent.dcl.$$"
21syscompat="sysent.compat.$$"
22syscompatdcl="sysent.compatdcl.$$"
23sysent="sysent.switch.$$"
24sysinc="sysinc.switch.$$"
25sysarg="sysarg.switch.$$"
26sysun="sysunion.switch.$$"
27
28trap "rm $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg $sysun" 0
29
30touch $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg $sysun
31
32case $# in
33    0)	echo "Usage: $0 input-file <config-file>" 1>&2
34	exit 1
35	;;
36esac
37
38if [ -n "$2" -a -f "$2" ]; then
39	. $2
40fi
41
42sed -e '
43s/\$//g
44:join
45	/\\$/{a\
46
47	N
48	s/\\\n//
49	b join
50	}
512,${
52	/^#/!s/\([{}()*,]\)/ \1 /g
53}
54' < $1 | awk "
55	BEGIN {
56		sysdcl = \"$sysdcl\"
57		sysproto = \"$sysproto\"
58		sysproto_h = \"$sysproto_h\"
59		syscompat = \"$syscompat\"
60		syscompatdcl = \"$syscompatdcl\"
61		sysent = \"$sysent\"
62		syssw = \"$syssw\"
63		sysinc = \"$sysinc\"
64		sysarg = \"$sysarg\"
65		sysun = \"$sysun\"
66		sysnames = \"$sysnames\"
67		syshdr = \"$syshdr\"
68		sysmk = \"$sysmk\"
69		compat = \"$compat\"
70		syscallprefix = \"$syscallprefix\"
71		switchname = \"$switchname\"
72		namesname = \"$namesname\"
73		infile = \"$1\"
74		"'
75
76		printf "/*\n * System call switch table.\n *\n" > syssw
77		printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > syssw
78		printf " *               by running make sysent in the same directory.\n" > syssw
79		printf " */\n\n" > syssw
80
81		printf "/*\n * System call prototypes.\n *\n" > sysarg
82		printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysarg
83		printf " *               by running make sysent in the same directory.\n" > sysarg
84		printf " */\n\n" > sysarg
85		printf "#ifndef %s\n", sysproto_h > sysarg
86		printf "#define\t%s\n\n", sysproto_h > sysarg
87		printf "#include <sys/select.h>\n" > sysarg
88		printf "#include <sys/signal.h>\n" > sysarg
89		printf "#include <sys/acl.h>\n" > sysarg
90		printf "#include <sys/mqueue.h>\n" > sysarg
91		printf "#include <sys/msgport.h>\n" > sysarg
92		printf "#include <sys/sysmsg.h>\n" > sysarg
93		printf "#include <sys/procctl.h>\n\n" > sysarg
94		printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
95		printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
96
97		printf "/*\n * System call names.\n *\n" > sysnames
98		printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysnames
99		printf " *               by running make sysent in the same directory.\n" > sysnames
100		printf " */\n\n" > sysnames
101		printf "const char *%s[] = {\n", namesname > sysnames
102
103		printf "/*\n * System call numbers.\n *\n" > syshdr
104		printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > syshdr
105		printf " *               by running make sysent in the same directory.\n" > syshdr
106		printf " */\n\n" > syshdr
107
108		printf "# DragonFly system call names.\n" > sysmk
109		printf "# DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysmk
110		printf "#               by running make sysent in the same directory.\n" > sysmk
111		printf "MIASM = " > sysmk
112
113		printf "/*\n * Union of syscall args for messaging.\n *\n" > sysun
114		printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysun
115		printf " *               by running make sysent in the same directory.\n" > sysun
116		printf " */\n\n" > sysun
117		printf "union sysunion {\n" > sysun
118		printf "#ifdef _KERNEL /* header only applies in kernel */\n" > sysun
119		#printf "\tstruct\tlwkt_msg lmsg;\n" > sysun
120		printf "\tstruct\tsysmsg sysmsg;\n" > sysun
121		printf "#endif\n" > sysun
122
123		printf "\n/* The casts are bogus but will do for now. */\n" > sysent
124		printf "struct sysent %s[] = {\n",switchname > sysent
125
126		printf "\n#ifdef _KERNEL\n\n" > sysdcl
127		printf "\n#ifdef _KERNEL\n\n" > syscompatdcl
128	}
129	NF == 0 || $1 ~ /^;/ {
130		next
131	}
132	$1 ~ /^#[ 	]*include/ {
133		print > sysinc
134		next
135	}
136	$1 ~ /^#[ 	]*if/ {
137		print > sysent
138		print > sysdcl
139		print > sysarg
140		print > syscompat
141		print > sysnames
142		print > sysun
143		savesyscall = syscall
144		next
145	}
146	$1 ~ /^#[ 	]*else/ {
147		print > sysent
148		print > sysdcl
149		print > sysarg
150		print > sysun
151		print > syscompat
152		print > sysnames
153		syscall = savesyscall
154		next
155	}
156	$1 ~ /^#/ {
157		print > sysent
158		print > sysdcl
159		print > sysarg
160		print > sysun
161		print > syscompat
162		print > sysnames
163		next
164	}
165	syscall != $1 {
166		printf "%s: line %d: syscall number out of sync at %d\n",
167		    infile, NR, syscall
168		printf "line is:\n"
169		print
170		exit 1
171	}
172	function align_sysent_comment(column) {
173		printf("\t") > sysent
174		column = column + 8 - column % 8
175		while (column < 56) {
176			printf("\t") > sysent
177			column = column + 8
178		}
179	}
180	function parserr(was, wanted) {
181		printf "%s: line %d: unexpected %s (expected %s)\n",
182		    infile, NR, was, wanted
183		exit 1
184	}
185	function parseline() {
186		f=3			# toss number and type
187		argc= 0;
188		argssize = "0"
189		if ($NF != "}") {
190			funcalias=$(NF-2)
191			argalias=$(NF-1)
192			rettype=$NF
193			end=NF-3
194		} else {
195			funcalias=""
196			argalias=""
197			rettype="int"
198			end=NF
199		}
200		if ($2 == "NODEF") {
201			funcname=$3
202			argssize = "AS(" $5 ")"
203			return
204		}
205		if ($f != "{")
206			parserr($f, "{")
207		f++
208		if ($end != "}")
209			parserr($end, "}")
210		end--
211		if ($end != ";")
212			parserr($end, ";")
213		end--
214		if ($end != ")")
215			parserr($end, ")")
216		end--
217
218		f++	#function return type
219
220		funcname=$f
221		usefuncname=$f
222		if (funcalias == "")
223			funcalias = funcname
224		if (argalias == "") {
225			argalias = funcname "_args"
226			if ($2 == "COMPAT") {
227				argalias = "o" argalias
228				usefuncname = "sys_o" funcname
229			}
230		}
231		f++
232
233		if ($f != "(")
234			parserr($f, ")")
235		f++
236
237		if (f == end) {
238			if ($f != "void")
239				parserr($f, "argument definition")
240			return
241		}
242
243		while (f <= end) {
244			argc++
245			argtype[argc]=""
246			oldf=""
247			while (f < end && $(f+1) != ",") {
248				if (argtype[argc] != "" && oldf != "*")
249					argtype[argc] = argtype[argc]" ";
250				argtype[argc] = argtype[argc]$f;
251				oldf = $f;
252				f++
253			}
254			if (argtype[argc] == "")
255				parserr($f, "argument definition")
256			argname[argc]=$f;
257			f += 2;			# skip name, and any comma
258		}
259		if (argc != 0)
260			argssize = "AS(" argalias ")"
261	}
262	{	comment = $3
263		if (NF < 6)
264			for (i = 4; i <= NF; i++)
265				comment = comment " " $i
266	}
267	$2 == "STD" || $2 == "NODEF" || $2 == "NOARGS"  || $2 == "NOPROTO" \
268	    || $2 == "NOIMPL" {
269		parseline()
270		if ((!nosys || funcname != "nosys") && \
271		    (funcname != "lkmnosys")) {
272			if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
273				printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
274				printf("struct\t%s {\n", argalias) > sysarg
275				printf("#ifdef _KERNEL\n") > sysarg
276				printf("\tstruct sysmsg sysmsg;\n") > sysarg
277				printf("#endif\n") > sysarg
278				for (i = 1; i <= argc; i++)
279					printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
280					    argtype[i], argname[i],
281					    argname[i], argtype[i]) > sysarg
282				printf("};\n") > sysarg
283			}
284			else if ($2 != "NOARGS" && $2 != "NOPROTO" && \
285			    $2 != "NODEF") {
286				printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
287				printf("struct\t%s {\n", argalias) > sysarg
288				printf("#ifdef _KERNEL\n") > sysarg
289				printf("\tstruct sysmsg sysmsg;\n") > sysarg
290				printf("#endif\n") > sysarg
291				printf("\tregister_t dummy;\n") > sysarg
292				printf("};\n") > sysarg
293			}
294		}
295		if (($2 != "NOPROTO" && $2 != "NODEF" && \
296		    (funcname != "nosys" || !nosys)) || \
297		    (funcname == "lkmnosys" && !lkmnosys) || \
298		    funcname == "lkmressys") {
299			printf("%s\tsys_%s (struct %s *)",
300			    rettype, funcname, argalias) > sysdcl
301			printf(";\n") > sysdcl
302		}
303		if (funcname == "nosys")
304			nosys = 1
305		if (funcname == "lkmnosys")
306			lkmnosys = 1
307		printf("\t{ %s, (sy_call_t *)", argssize) > sysent
308		column = 8 + 2 + length(argssize) + 15
309	 	if ($2 != "NOIMPL") {
310			printf("sys_%s },", funcname) > sysent
311			column = column + length(funcname) + 7
312		} else {
313			printf("sys_%s },", "nosys") > sysent
314			column = column + length("nosys") + 7
315		}
316		align_sysent_comment(column)
317		printf("/* %d = %s */\n", syscall, funcalias) > sysent
318		printf("\t\"%s\",\t\t\t/* %d = %s */\n",
319		    funcalias, syscall, funcalias) > sysnames
320		if ($2 != "NODEF") {
321			printf("#define\t%s%s\t%d\n", syscallprefix,
322		    	    funcalias, syscall) > syshdr
323			printf(" \\\n\t%s.o", funcalias) > sysmk
324		}
325		syscall++
326		next
327	}
328	$2 == "COMPAT" || $2 == "CPT_NOA" {
329		ncompat++
330		parseline()
331		if (argc != 0 && $2 != "CPT_NOA") {
332			printf("struct\t%s {\n", argalias) > syscompat
333			printf("#ifdef _KERNEL\n") > syscompat
334			printf("\tstruct sysmsg sysmsg;\n") > syscompat
335			printf("#endif\n") > syscompat
336			for (i = 1; i <= argc; i++)
337				printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
338				    argtype[i], argname[i],
339				    argname[i], argtype[i]) > syscompat
340			printf("};\n") > syscompat
341		}
342		else if($2 != "CPT_NOA") {
343			printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
344			printf("struct\t%s {\n", argalias) > sysarg
345			printf("#ifdef _KERNEL\n") > sysarg
346			printf("\tstruct sysmsg sysmsg;\n") > sysarg
347			printf("#endif\n") > sysarg
348			printf("\tregister_t dummy;\n") > sysarg
349			printf("};\n") > sysarg
350		}
351		printf("%s\tsys_o%s (struct %s *);\n",
352		    rettype, funcname, argalias) > syscompatdcl
353		printf("\t{ compat(%s,%s) },",
354		    argssize, funcname) > sysent
355		align_sysent_comment(8 + 9 + \
356		    length(argssize) + 1 + length(funcname) + 4)
357		printf("/* %d = old %s */\n", syscall, funcalias) > sysent
358		printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
359		    funcalias, syscall, funcalias) > sysnames
360		printf("\t\t\t\t/* %d is old %s */\n",
361		    syscall, funcalias) > syshdr
362		syscall++
363		next
364	}
365	$2 == "LIBCOMPAT" {
366		ncompat++
367		parseline()
368		printf("%s\tsys_o%s();\n", rettype, funcname) > syscompatdcl
369		printf("\t{ compat(%s,%s) },",
370		    argssize, funcname) > sysent
371		align_sysent_comment(8 + 9 + \
372		    length(argssize) + 1 + length(funcname) + 4)
373		printf("/* %d = old %s */\n", syscall, funcalias) > sysent
374		printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
375		    funcalias, syscall, funcalias) > sysnames
376		printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
377		    syscallprefix, funcalias, syscall) > syshdr
378		printf(" \\\n\t%s.o", funcalias) > sysmk
379		syscall++
380		next
381	}
382	$2 == "OBSOL" {
383		printf("\t{ 0, (sy_call_t *)sys_nosys },") > sysent
384		align_sysent_comment(37)
385		printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
386		printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
387		    $3, syscall, comment) > sysnames
388		printf("\t\t\t\t/* %d is obsolete %s */\n",
389		    syscall, comment) > syshdr
390		syscall++
391		next
392	}
393	$2 == "UNIMPL" {
394		printf("\t{ 0, (sy_call_t *)sys_nosys },\t\t\t/* %d = %s */\n",
395		    syscall, comment) > sysent
396		printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
397		    syscall, syscall, comment) > sysnames
398		syscall++
399		next
400	}
401	{
402		printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
403		exit 1
404	}
405	END {
406		printf "\n#define AS(name) ((sizeof(struct name) - sizeof(struct sysmsg)) / sizeof(register_t))\n" > sysinc
407		if (ncompat != 0)
408			printf "#define compat(n, name) 0, (sy_call_t *)sys_nosys\n" > sysinc
409
410		printf("\n#endif /* _KERNEL */\n") > syscompatdcl
411
412		printf("\n") > sysmk
413		printf("};\n") > sysent
414		printf("};\n") > sysnames
415		printf("};\n") > sysun
416		printf("\n#endif /* !%s */\n", sysproto_h) > sysdcl
417		printf("#undef PAD_\n") > sysdcl
418		printf("\n#endif /* _KERNEL */\n") > sysdcl
419		printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
420		    > syshdr
421	} '
422
423cat $sysinc $sysent >> $syssw
424cat $sysarg $syscompat $syscompatdcl $sysdcl > $sysproto
425cat $sysun > $sysunion
426