xref: /dragonfly/sys/kern/makesyscalls.sh (revision f2c43266) 
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# name of compat option:
8compat=COMPAT_43
9
10# output files:
11sysnames="syscalls.c"
12sysproto="../sys/sysproto.h"
13sysunion="../sys/sysunion.h"
14sysproto_h=_SYS_SYSPROTO_H_
15syshdr="../sys/syscall.h"
16sysmk="../sys/syscall.mk"
17syssw="init_sysent.c"
18syscallprefix="SYS_"
19switchname="sysent"
20namesname="syscallnames"
21
22# tmp files:
23sysdcl="sysent.dcl.$$"
24syscompat="sysent.compat.$$"
25syscompatdcl="sysent.compatdcl.$$"
26sysent="sysent.switch.$$"
27sysinc="sysinc.switch.$$"
28sysarg="sysarg.switch.$$"
29sysun="sysunion.switch.$$"
30
31trap "rm $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg $sysun" 0
32
33touch $sysdcl $syscompat $syscompatdcl $sysent $sysinc $sysarg $sysun
34
35case $# in
36    0)	echo "Usage: $0 input-file <config-file>" 1>&2
37	exit 1
38	;;
39esac
40
41if [ -n "$2" -a -f "$2" ]; then
42	. $2
43fi
44
45sed -e '
46s/\$//g
47:join
48	/\\$/{a\
49
50	N
51	s/\\\n//
52	b join
53	}
542,${
55	/^#/!s/\([{}()*,]\)/ \1 /g
56}
57' < $1 | awk "
58	BEGIN {
59		sysdcl = \"$sysdcl\"
60		sysproto = \"$sysproto\"
61		sysproto_h = \"$sysproto_h\"
62		syscompat = \"$syscompat\"
63		syscompatdcl = \"$syscompatdcl\"
64		sysent = \"$sysent\"
65		syssw = \"$syssw\"
66		sysinc = \"$sysinc\"
67		sysarg = \"$sysarg\"
68		sysun = \"$sysun\"
69		sysnames = \"$sysnames\"
70		syshdr = \"$syshdr\"
71		sysmk = \"$sysmk\"
72		compat = \"$compat\"
73		syscallprefix = \"$syscallprefix\"
74		switchname = \"$switchname\"
75		namesname = \"$namesname\"
76		infile = \"$1\"
77		"'
78
79		printf "/*\n * System call switch table.\n *\n" > syssw
80		printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > syssw
81		printf " *               by running make sysent in the same directory.\n" > syssw
82		printf " */\n\n" > syssw
83
84		printf "/*\n * System call prototypes.\n *\n" > sysarg
85		printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysarg
86		printf " *               by running make sysent in the same directory.\n" > sysarg
87		printf " */\n\n" > sysarg
88		printf "#ifndef %s\n", sysproto_h > sysarg
89		printf "#define\t%s\n\n", sysproto_h > sysarg
90		printf "#include <sys/select.h>\n\n" > sysarg
91		printf "#include <sys/signal.h>\n\n" > sysarg
92		printf "#include <sys/acl.h>\n\n" > sysarg
93		printf "#include <sys/msgport.h>\n\n" > sysarg
94		printf "#include <sys/sysmsg.h>\n\n" > sysarg
95		printf "#include <sys/procctl.h>\n\n" > sysarg
96		printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
97		printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
98
99		printf "\n#ifdef %s\n\n", compat > syscompat
100
101		printf "/*\n * System call names.\n *\n" > sysnames
102		printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysnames
103		printf " *               by running make sysent in the same directory.\n" > sysnames
104		printf " */\n\n" > sysnames
105		printf "const char *%s[] = {\n", namesname > sysnames
106
107		printf "/*\n * System call numbers.\n *\n" > syshdr
108		printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > syshdr
109		printf " *               by running make sysent in the same directory.\n" > syshdr
110		printf " */\n\n" > syshdr
111
112		printf "# DragonFly system call names.\n" > sysmk
113		printf "# DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysmk
114		printf "#               by running make sysent in the same directory.\n" > sysmk
115		printf "MIASM = " > sysmk
116
117		printf "/*\n * Union of syscall args for messaging.\n *\n" > sysun
118		printf " * DO NOT EDIT-- To regenerate this file, edit syscalls.master followed\n" > sysun
119		printf " *               by running make sysent in the same directory.\n" > sysun
120		printf " */\n\n" > sysun
121		printf "union sysunion {\n" > sysun
122		printf "#ifdef _KERNEL /* header only applies in kernel */\n" > sysun
123		printf "\tstruct\tlwkt_msg lmsg;\n" > sysun
124		printf "\tstruct\tsysmsg sysmsg;\n" > sysun
125		printf "#endif\n" > sysun
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 "\n#ifdef _KERNEL\n\n" > sysdcl
131		printf "\n#ifdef _KERNEL\n\n" > syscompatdcl
132	}
133	NF == 0 || $1 ~ /^;/ {
134		next
135	}
136	$1 ~ /^#[ 	]*include/ {
137		print > sysinc
138		next
139	}
140	$1 ~ /^#[ 	]*if/ {
141		print > sysent
142		print > sysdcl
143		print > sysarg
144		print > syscompat
145		print > sysnames
146		print > sysun
147		savesyscall = syscall
148		next
149	}
150	$1 ~ /^#[ 	]*else/ {
151		print > sysent
152		print > sysdcl
153		print > sysarg
154		print > sysun
155		print > syscompat
156		print > sysnames
157		syscall = savesyscall
158		next
159	}
160	$1 ~ /^#/ {
161		print > sysent
162		print > sysdcl
163		print > sysarg
164		print > sysun
165		print > syscompat
166		print > sysnames
167		next
168	}
169	syscall != $1 {
170		printf "%s: line %d: syscall number out of sync at %d\n",
171		    infile, NR, syscall
172		printf "line is:\n"
173		print
174		exit 1
175	}
176	function align_sysent_comment(column) {
177		printf("\t") > sysent
178		column = column + 8 - column % 8
179		while (column < 56) {
180			printf("\t") > sysent
181			column = column + 8
182		}
183	}
184	function parserr(was, wanted) {
185		printf "%s: line %d: unexpected %s (expected %s)\n",
186		    infile, NR, was, wanted
187		exit 1
188	}
189	function parseline() {
190		f=3			# toss number and type
191		argc= 0;
192		argssize = "0"
193		if ($NF != "}") {
194			funcalias=$(NF-2)
195			argalias=$(NF-1)
196			rettype=$NF
197			end=NF-3
198		} else {
199			funcalias=""
200			argalias=""
201			rettype="int"
202			end=NF
203		}
204		if ($2 == "NODEF") {
205			funcname=$3
206			argssize = "AS(" $5 ")"
207			return
208		}
209		if ($f != "{")
210			parserr($f, "{")
211		f++
212		if ($end != "}")
213			parserr($end, "}")
214		end--
215		if ($end != ";")
216			parserr($end, ";")
217		end--
218		if ($end != ")")
219			parserr($end, ")")
220		end--
221
222		f++	#function return type
223
224		funcname=$f
225		usefuncname=$f
226		if (funcalias == "")
227			funcalias = funcname
228		if (argalias == "") {
229			argalias = funcname "_args"
230			if ($2 == "COMPAT") {
231				argalias = "o" argalias
232				usefuncname = "sys_o" funcname
233			}
234		}
235		f++
236
237		if ($f != "(")
238			parserr($f, ")")
239		f++
240
241		if (f == end) {
242			if ($f != "void")
243				parserr($f, "argument definition")
244			return
245		}
246
247		while (f <= end) {
248			argc++
249			argtype[argc]=""
250			oldf=""
251			while (f < end && $(f+1) != ",") {
252				if (argtype[argc] != "" && oldf != "*")
253					argtype[argc] = argtype[argc]" ";
254				argtype[argc] = argtype[argc]$f;
255				oldf = $f;
256				f++
257			}
258			if (argtype[argc] == "")
259				parserr($f, "argument definition")
260			argname[argc]=$f;
261			f += 2;			# skip name, and any comma
262		}
263		if (argc != 0)
264			argssize = "AS(" argalias ")"
265	}
266	{	comment = $3
267		if (NF < 6)
268			for (i = 4; i <= NF; i++)
269				comment = comment " " $i
270	}
271	$2 == "STD" || $2 == "NODEF" || $2 == "NOARGS"  || $2 == "NOPROTO" \
272	    || $2 == "NOIMPL" {
273		parseline()
274		if ((!nosys || funcname != "nosys") && \
275		    (funcname != "lkmnosys")) {
276			if (argc != 0 && $2 != "NOARGS" && $2 != "NOPROTO") {
277				printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
278				printf("struct\t%s {\n", argalias) > sysarg
279				printf("#ifdef _KERNEL\n") > sysarg
280				printf("\tstruct sysmsg sysmsg;\n") > sysarg
281				printf("#endif\n") > sysarg
282				for (i = 1; i <= argc; i++)
283					printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
284					    argtype[i], argname[i],
285					    argname[i], argtype[i]) > sysarg
286				printf("};\n") > sysarg
287			}
288			else if ($2 != "NOARGS" && $2 != "NOPROTO" && \
289			    $2 != "NODEF") {
290				printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
291				printf("struct\t%s {\n", argalias) > sysarg
292				printf("#ifdef _KERNEL\n") > sysarg
293				printf("\tstruct sysmsg sysmsg;\n") > sysarg
294				printf("#endif\n") > sysarg
295				printf("\tregister_t dummy;\n") > sysarg
296				printf("};\n") > sysarg
297			}
298		}
299		if (($2 != "NOPROTO" && $2 != "NODEF" && \
300		    (funcname != "nosys" || !nosys)) || \
301		    (funcname == "lkmnosys" && !lkmnosys) || \
302		    funcname == "lkmressys") {
303			printf("%s\tsys_%s (struct %s *)",
304			    rettype, funcname, argalias) > sysdcl
305			printf(";\n") > sysdcl
306		}
307		if (funcname == "nosys")
308			nosys = 1
309		if (funcname == "lkmnosys")
310			lkmnosys = 1
311		printf("\t{ %s, (sy_call_t *)", argssize) > sysent
312		column = 8 + 2 + length(argssize) + 15
313	 	if ($2 != "NOIMPL") {
314			printf("sys_%s },", funcname) > sysent
315			column = column + length(funcname) + 7
316		} else {
317			printf("sys_%s },", "nosys") > sysent
318			column = column + length("nosys") + 7
319		}
320		align_sysent_comment(column)
321		printf("/* %d = %s */\n", syscall, funcalias) > sysent
322		printf("\t\"%s\",\t\t\t/* %d = %s */\n",
323		    funcalias, syscall, funcalias) > sysnames
324		if ($2 != "NODEF") {
325			printf("#define\t%s%s\t%d\n", syscallprefix,
326		    	    funcalias, syscall) > syshdr
327			printf(" \\\n\t%s.o", funcalias) > sysmk
328		}
329		syscall++
330		next
331	}
332	$2 == "COMPAT" || $2 == "CPT_NOA" {
333		ncompat++
334		parseline()
335		if (argc != 0 && $2 != "CPT_NOA") {
336			printf("#ifdef %s\n", compat) > sysun
337			printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
338			printf("#endif\n") > sysun
339			printf("struct\t%s {\n", argalias) > syscompat
340			printf("#ifdef _KERNEL\n") > syscompat
341			printf("\tstruct sysmsg sysmsg;\n") > syscompat
342			printf("#endif\n") > syscompat
343			for (i = 1; i <= argc; i++)
344				printf("\t%s\t%s;\tchar %s_[PAD_(%s)];\n",
345				    argtype[i], argname[i],
346				    argname[i], argtype[i]) > syscompat
347			printf("};\n") > syscompat
348		}
349		else if($2 != "CPT_NOA") {
350			printf("\tstruct\t%s %s;\n", argalias, usefuncname) > sysun
351			printf("struct\t%s {\n", argalias) > sysarg
352			printf("#ifdef _KERNEL\n") > sysarg
353			printf("\tstruct sysmsg sysmsg;\n") > sysarg
354			printf("#endif\n") > sysarg
355			printf("\tregister_t dummy;\n") > sysarg
356			printf("};\n") > sysarg
357		}
358		printf("%s\tsys_o%s (struct %s *);\n",
359		    rettype, funcname, argalias) > syscompatdcl
360		printf("\t{ compat(%s,%s) },",
361		    argssize, funcname) > sysent
362		align_sysent_comment(8 + 9 + \
363		    length(argssize) + 1 + length(funcname) + 4)
364		printf("/* %d = old %s */\n", syscall, funcalias) > sysent
365		printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
366		    funcalias, syscall, funcalias) > sysnames
367		printf("\t\t\t\t/* %d is old %s */\n",
368		    syscall, funcalias) > syshdr
369		syscall++
370		next
371	}
372	$2 == "LIBCOMPAT" {
373		ncompat++
374		parseline()
375		printf("%s\tsys_o%s();\n", rettype, funcname) > syscompatdcl
376		printf("\t{ compat(%s,%s) },",
377		    argssize, funcname) > sysent
378		align_sysent_comment(8 + 9 + \
379		    length(argssize) + 1 + length(funcname) + 4)
380		printf("/* %d = old %s */\n", syscall, funcalias) > sysent
381		printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
382		    funcalias, syscall, funcalias) > sysnames
383		printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
384		    syscallprefix, funcalias, syscall) > syshdr
385		printf(" \\\n\t%s.o", funcalias) > sysmk
386		syscall++
387		next
388	}
389	$2 == "OBSOL" {
390		printf("\t{ 0, (sy_call_t *)sys_nosys },") > sysent
391		align_sysent_comment(37)
392		printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
393		printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
394		    $3, syscall, comment) > sysnames
395		printf("\t\t\t\t/* %d is obsolete %s */\n",
396		    syscall, comment) > syshdr
397		syscall++
398		next
399	}
400	$2 == "UNIMPL" {
401		printf("\t{ 0, (sy_call_t *)sys_nosys },\t\t\t/* %d = %s */\n",
402		    syscall, comment) > sysent
403		printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
404		    syscall, syscall, comment) > sysnames
405		syscall++
406		next
407	}
408	{
409		printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
410		exit 1
411	}
412	END {
413		printf "\n#define AS(name) ((sizeof(struct name) - sizeof(struct sysmsg)) / sizeof(register_t))\n" > sysinc
414		if (ncompat != 0) {
415			printf "#include \"opt_compat.h\"\n\n" > syssw
416			printf "\n#ifdef %s\n", compat > sysinc
417			printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(sys_,__CONCAT(o,name))\n" > sysinc
418			printf "#else\n" > sysinc
419			printf "#define compat(n, name) 0, (sy_call_t *)sys_nosys\n" > sysinc
420			printf "#endif\n" > sysinc
421		}
422
423		printf("\n#endif /* _KERNEL */\n") > syscompatdcl
424		printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
425
426		printf("\n") > sysmk
427		printf("};\n") > sysent
428		printf("};\n") > sysnames
429		printf("};\n") > sysun
430		printf("\n#endif /* !%s */\n", sysproto_h) > sysdcl
431		printf("#undef PAD_\n") > sysdcl
432		printf("\n#endif /* _KERNEL */\n") > sysdcl
433		printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
434		    > syshdr
435	} '
436
437cat $sysinc $sysent >> $syssw
438cat $sysarg $syscompat $syscompatdcl $sysdcl > $sysproto
439cat $sysun > $sysunion
440