1 564ca709 2004-04-19 devnull #include <u.h>
  2 564ca709 2004-04-19 devnull #include <libc.h>
  3 564ca709 2004-04-19 devnull #include <bio.h>
  4 564ca709 2004-04-19 devnull #include <mach.h>
  5 564ca709 2004-04-19 devnull #define Extern
  6 564ca709 2004-04-19 devnull #include "acid.h"
  7 564ca709 2004-04-19 devnull #include "y.tab.h"
  8 564ca709 2004-04-19 devnull 
  9 564ca709 2004-04-19 devnull extern int __ifmt(Fmt*);
 10 564ca709 2004-04-19 devnull 
 11 564ca709 2004-04-19 devnull static Biobuf	bioout;
 12 564ca709 2004-04-19 devnull static char*	lm[16];
 13 564ca709 2004-04-19 devnull static int	nlm;
 14 564ca709 2004-04-19 devnull static char*	mtype;
 15 564ca709 2004-04-19 devnull 
 16 564ca709 2004-04-19 devnull static	int attachfiles(int, char**);
 17 564ca709 2004-04-19 devnull int	xfmt(Fmt*);
 18 564ca709 2004-04-19 devnull int	isnumeric(char*);
 19 564ca709 2004-04-19 devnull void	die(void);
 20 564ca709 2004-04-19 devnull void	setcore(Fhdr*);
 21 564ca709 2004-04-19 devnull 
 22 564ca709 2004-04-19 devnull void
 23 564ca709 2004-04-19 devnull usage(void)
 24 564ca709 2004-04-19 devnull {
 25 564ca709 2004-04-19 devnull 	fprint(2, "usage: acid [-c core] [-l module] [-m machine] [-qrw] [-k] [pid] [file]\n");
 26 564ca709 2004-04-19 devnull 	exits("usage");
 27 564ca709 2004-04-19 devnull }
 28 564ca709 2004-04-19 devnull 
 29 564ca709 2004-04-19 devnull void
 30 564ca709 2004-04-19 devnull main(int argc, char *argv[])
 31 564ca709 2004-04-19 devnull {
 32 564ca709 2004-04-19 devnull 	Lsym *l;
 33 564ca709 2004-04-19 devnull 	Node *n;
 34 564ca709 2004-04-19 devnull 	char buf[128], *s;
 35 564ca709 2004-04-19 devnull 	int pid, i;
 36 564ca709 2004-04-19 devnull 
 37 564ca709 2004-04-19 devnull 	argv0 = argv[0];
 38 564ca709 2004-04-19 devnull 	pid = 0;
 39 564ca709 2004-04-19 devnull 	quiet = 1;
 40 564ca709 2004-04-19 devnull 
 41 564ca709 2004-04-19 devnull 	mtype = 0;
 42 564ca709 2004-04-19 devnull 	ARGBEGIN{
 43 564ca709 2004-04-19 devnull 	case 'A':
 44 564ca709 2004-04-19 devnull 		abort();
 45 564ca709 2004-04-19 devnull 		break;
 46 564ca709 2004-04-19 devnull 	case 'm':
 47 564ca709 2004-04-19 devnull 		mtype = ARGF();
 48 564ca709 2004-04-19 devnull 		break;
 49 564ca709 2004-04-19 devnull 	case 'w':
 50 564ca709 2004-04-19 devnull 		wtflag = 1;
 51 564ca709 2004-04-19 devnull 		break;
 52 564ca709 2004-04-19 devnull 	case 'l':
 53 564ca709 2004-04-19 devnull 		s = ARGF();
 54 564ca709 2004-04-19 devnull 		if(s == 0)
 55 564ca709 2004-04-19 devnull 			usage();
 56 564ca709 2004-04-19 devnull 		lm[nlm++] = s;
 57 564ca709 2004-04-19 devnull 		break;
 58 564ca709 2004-04-19 devnull 	case 'k':
 59 564ca709 2004-04-19 devnull 		kernel++;
 60 564ca709 2004-04-19 devnull 		break;
 61 564ca709 2004-04-19 devnull 	case 'q':
 62 564ca709 2004-04-19 devnull 		quiet = 0;
 63 564ca709 2004-04-19 devnull 		break;
 64 564ca709 2004-04-19 devnull 	case 'r':
 65 564ca709 2004-04-19 devnull 		pid = 1;
 66 564ca709 2004-04-19 devnull 		remote++;
 67 564ca709 2004-04-19 devnull 		kernel++;
 68 564ca709 2004-04-19 devnull 		break;
 69 564ca709 2004-04-19 devnull 	default:
 70 564ca709 2004-04-19 devnull 		usage();
 71 564ca709 2004-04-19 devnull 	}ARGEND
 72 564ca709 2004-04-19 devnull 
 73 564ca709 2004-04-19 devnull 	fmtinstall('x', xfmt);
 74 564ca709 2004-04-19 devnull 	fmtinstall('Z', Zfmt);
 75 564ca709 2004-04-19 devnull 	fmtinstall('L', locfmt);
 76 564ca709 2004-04-19 devnull 	Binit(&bioout, 1, OWRITE);
 77 564ca709 2004-04-19 devnull 	bout = &bioout;
 78 564ca709 2004-04-19 devnull 
 79 e637c944 2004-04-20 devnull 	initexpr();
 80 d2cbcb77 2004-04-20 devnull 	initprint();
 81 564ca709 2004-04-19 devnull 	kinit();
 82 564ca709 2004-04-19 devnull 	initialising = 1;
 83 564ca709 2004-04-19 devnull 	pushfile(0);
 84 564ca709 2004-04-19 devnull 	loadvars();
 85 564ca709 2004-04-19 devnull 	installbuiltin();
 86 564ca709 2004-04-19 devnull 
 87 564ca709 2004-04-19 devnull 	if(mtype && machbyname(mtype) == 0)
 88 564ca709 2004-04-19 devnull 		print("unknown machine %s", mtype);
 89 564ca709 2004-04-19 devnull 
 90 564ca709 2004-04-19 devnull 	if (attachfiles(argc, argv) < 0)
 91 564ca709 2004-04-19 devnull 		varreg();		/* use default register set on error */
 92 564ca709 2004-04-19 devnull 	if(mach == nil)
 93 564ca709 2004-04-19 devnull 		mach = machcpu;
 94 564ca709 2004-04-19 devnull 
 95 564ca709 2004-04-19 devnull 	symhdr = nil;	/* not supposed to use this anymore */
 96 564ca709 2004-04-19 devnull 
 97 564ca709 2004-04-19 devnull 	l = mkvar("acid");
 98 564ca709 2004-04-19 devnull 	l->v->set = 1;
 99 564ca709 2004-04-19 devnull 	l->v->type = TLIST;
100 564ca709 2004-04-19 devnull 	l->v->store.u.l = nil;
101 564ca709 2004-04-19 devnull 
102 13e66070 2004-04-20 devnull 	loadmodule(unsharp("#9/acid/port"));
103 564ca709 2004-04-19 devnull 	for(i = 0; i < nlm; i++) {
104 564ca709 2004-04-19 devnull 		if(access(lm[i], AREAD) >= 0)
105 564ca709 2004-04-19 devnull 			loadmodule(lm[i]);
106 564ca709 2004-04-19 devnull 		else {
107 13e66070 2004-04-20 devnull 			sprint(buf, "#9/acid/%s", lm[i]);
108 13e66070 2004-04-20 devnull 			loadmodule(unsharp(buf));
109 564ca709 2004-04-19 devnull 		}
110 564ca709 2004-04-19 devnull 	}
111 564ca709 2004-04-19 devnull 
112 564ca709 2004-04-19 devnull 	userinit();
113 564ca709 2004-04-19 devnull 	varsym();
114 564ca709 2004-04-19 devnull 
115 564ca709 2004-04-19 devnull 	l = look("acidmap");
116 564ca709 2004-04-19 devnull 	if(l && l->proc) {
117 b4a659b6 2004-04-19 devnull 		if(setjmp(err) == 0){
118 b4a659b6 2004-04-19 devnull 			n = an(ONAME, ZN, ZN);
119 b4a659b6 2004-04-19 devnull 			n->sym = l;
120 b4a659b6 2004-04-19 devnull 			n = an(OCALL, n, ZN);
121 b4a659b6 2004-04-19 devnull 			execute(n);
122 b4a659b6 2004-04-19 devnull 		}
123 564ca709 2004-04-19 devnull 	}
124 564ca709 2004-04-19 devnull 
125 564ca709 2004-04-19 devnull 	interactive = 1;
126 564ca709 2004-04-19 devnull 	initialising = 0;
127 564ca709 2004-04-19 devnull 	line = 1;
128 564ca709 2004-04-19 devnull 
129 564ca709 2004-04-19 devnull 	notify(catcher);
130 564ca709 2004-04-19 devnull 
131 564ca709 2004-04-19 devnull 	for(;;) {
132 564ca709 2004-04-19 devnull 		if(setjmp(err)) {
133 564ca709 2004-04-19 devnull 			Binit(&bioout, 1, OWRITE);
134 564ca709 2004-04-19 devnull 			unwind();
135 564ca709 2004-04-19 devnull 		}
136 564ca709 2004-04-19 devnull 		stacked = 0;
137 564ca709 2004-04-19 devnull 
138 564ca709 2004-04-19 devnull 		Bprint(bout, "acid; ");
139 564ca709 2004-04-19 devnull 
140 564ca709 2004-04-19 devnull 		if(yyparse() != 1)
141 564ca709 2004-04-19 devnull 			die();
142 564ca709 2004-04-19 devnull 		restartio();
143 564ca709 2004-04-19 devnull 
144 564ca709 2004-04-19 devnull 		unwind();
145 564ca709 2004-04-19 devnull 	}
146 564ca709 2004-04-19 devnull 	Bputc(bout, '\n');
147 564ca709 2004-04-19 devnull 	exits(0);
148 564ca709 2004-04-19 devnull }
149 564ca709 2004-04-19 devnull 
150 564ca709 2004-04-19 devnull static int
151 564ca709 2004-04-19 devnull attachfiles(int argc, char **argv)
152 564ca709 2004-04-19 devnull {
153 b4a659b6 2004-04-19 devnull 	int pid;
154 564ca709 2004-04-19 devnull 	char *s;
155 564ca709 2004-04-19 devnull 	int i, omode;
156 564ca709 2004-04-19 devnull 	Fhdr *hdr;
157 564ca709 2004-04-19 devnull 	Lsym *l;
158 564ca709 2004-04-19 devnull 	Value *v;
159 564ca709 2004-04-19 devnull 
160 b4a659b6 2004-04-19 devnull 	pid = 0;
161 564ca709 2004-04-19 devnull 	interactive = 0;
162 564ca709 2004-04-19 devnull 	if(setjmp(err))
163 564ca709 2004-04-19 devnull 		return -1;
164 564ca709 2004-04-19 devnull 
165 564ca709 2004-04-19 devnull 	/*
166 564ca709 2004-04-19 devnull 	 * Unix and Plan 9 differ on what the right order of pid, text, and core is.
167 564ca709 2004-04-19 devnull 	 * I never remember anyway.  Let's just accept them in any order.
168 564ca709 2004-04-19 devnull 	 */
169 564ca709 2004-04-19 devnull 	omode = wtflag ? ORDWR : OREAD;
170 564ca709 2004-04-19 devnull 	for(i=0; i<argc; i++){
171 564ca709 2004-04-19 devnull 		if(isnumeric(argv[i])){
172 564ca709 2004-04-19 devnull 			if(pid){
173 564ca709 2004-04-19 devnull 				fprint(2, "already have pid %d; ignoring pid %d\n", pid, argv[i]);
174 564ca709 2004-04-19 devnull 				continue;
175 564ca709 2004-04-19 devnull 			}
176 564ca709 2004-04-19 devnull 			if(corhdr){
177 564ca709 2004-04-19 devnull 				fprint(2, "already have core %s; ignoring pid %d\n", corfil, pid);
178 564ca709 2004-04-19 devnull 				continue;
179 564ca709 2004-04-19 devnull 			}
180 564ca709 2004-04-19 devnull 			pid = atoi(argv[i]);
181 564ca709 2004-04-19 devnull 			continue;
182 564ca709 2004-04-19 devnull 		}
183 564ca709 2004-04-19 devnull 		if((hdr = crackhdr(argv[i], omode)) == nil){
184 564ca709 2004-04-19 devnull 			fprint(2, "crackhdr %s: %r\n", argv[i]);
185 564ca709 2004-04-19 devnull 			continue;
186 564ca709 2004-04-19 devnull 		}
187 564ca709 2004-04-19 devnull 		fprint(2, "%s: %s %s %s\n", argv[i], hdr->aname, hdr->mname, hdr->fname);
188 564ca709 2004-04-19 devnull 		if(hdr->ftype == FCORE){
189 564ca709 2004-04-19 devnull 			if(pid){
190 564ca709 2004-04-19 devnull 				fprint(2, "already have pid %d; ignoring core %s\n", pid, argv[i]);
191 564ca709 2004-04-19 devnull 				uncrackhdr(hdr);
192 564ca709 2004-04-19 devnull 				continue;
193 564ca709 2004-04-19 devnull 			}
194 564ca709 2004-04-19 devnull 			if(corhdr){
195 564ca709 2004-04-19 devnull 				fprint(2, "already have core %s; ignoring core %s\n", corfil, argv[i]);
196 564ca709 2004-04-19 devnull 				uncrackhdr(hdr);
197 564ca709 2004-04-19 devnull 				continue;
198 564ca709 2004-04-19 devnull 			}
199 564ca709 2004-04-19 devnull 			corhdr = hdr;
200 564ca709 2004-04-19 devnull 			corfil = argv[i];
201 564ca709 2004-04-19 devnull 		}else{
202 564ca709 2004-04-19 devnull 			if(symhdr){
203 564ca709 2004-04-19 devnull 				fprint(2, "already have text %s; ignoring text %s\n", symfil, argv[i]);
204 564ca709 2004-04-19 devnull 				uncrackhdr(hdr);
205 564ca709 2004-04-19 devnull 				continue;
206 564ca709 2004-04-19 devnull 			}
207 564ca709 2004-04-19 devnull 			symhdr = hdr;
208 564ca709 2004-04-19 devnull 			symfil = argv[i];
209 564ca709 2004-04-19 devnull 		}
210 564ca709 2004-04-19 devnull 	}
211 564ca709 2004-04-19 devnull 
212 564ca709 2004-04-19 devnull 	if(symhdr==nil){
213 564ca709 2004-04-19 devnull 		symfil = "a.out";
214 564ca709 2004-04-19 devnull 		if(pid){
215 564ca709 2004-04-19 devnull 			if((s = proctextfile(pid)) != nil){
216 564ca709 2004-04-19 devnull 				fprint(2, "pid %d: text %s\n", pid, s);
217 564ca709 2004-04-19 devnull 				symfil = s;
218 564ca709 2004-04-19 devnull 			}
219 564ca709 2004-04-19 devnull 		}
220 564ca709 2004-04-19 devnull 		/* XXX pull command from core */
221 564ca709 2004-04-19 devnull 
222 c2a9c3bb 2004-04-19 devnull 		if((symhdr = crackhdr(symfil, omode)) == nil){
223 564ca709 2004-04-19 devnull 			fprint(2, "crackhdr %s: %r\n", symfil);
224 564ca709 2004-04-19 devnull 			symfil = nil;
225 564ca709 2004-04-19 devnull 		}
226 564ca709 2004-04-19 devnull 	}
227 564ca709 2004-04-19 devnull 
228 564ca709 2004-04-19 devnull 	if(symhdr)
229 564ca709 2004-04-19 devnull 		syminit(symhdr);
230 564ca709 2004-04-19 devnull 
231 564ca709 2004-04-19 devnull 	if(!mach)
232 564ca709 2004-04-19 devnull 		mach = machcpu;
233 564ca709 2004-04-19 devnull 
234 564ca709 2004-04-19 devnull 	/*
235 564ca709 2004-04-19 devnull 	 * Set up maps.
236 564ca709 2004-04-19 devnull 	 */
237 564ca709 2004-04-19 devnull 	symmap = allocmap();
238 564ca709 2004-04-19 devnull 	cormap = allocmap();
239 564ca709 2004-04-19 devnull 	if(symmap == nil || cormap == nil)
240 564ca709 2004-04-19 devnull 		sysfatal("allocating maps: %r");
241 564ca709 2004-04-19 devnull 
242 564ca709 2004-04-19 devnull 	if(symhdr){
243 564ca709 2004-04-19 devnull 		if(mapfile(symhdr, 0, symmap, nil) < 0)
244 564ca709 2004-04-19 devnull 			fprint(2, "mapping %s: %r\n", symfil);
245 564ca709 2004-04-19 devnull 		mapfile(symhdr, 0, cormap, nil);
246 564ca709 2004-04-19 devnull 	}
247 564ca709 2004-04-19 devnull 
248 564ca709 2004-04-19 devnull 	l = mkvar("objtype");
249 564ca709 2004-04-19 devnull 	v = l->v;
250 564ca709 2004-04-19 devnull 	v->store.fmt = 's';
251 564ca709 2004-04-19 devnull 	v->set = 1;
252 564ca709 2004-04-19 devnull 	v->store.u.string = strnode(mach->name);
253 564ca709 2004-04-19 devnull 	v->type = TSTRING;
254 564ca709 2004-04-19 devnull 
255 564ca709 2004-04-19 devnull 	l = mkvar("textfile");
256 564ca709 2004-04-19 devnull 	v = l->v;
257 564ca709 2004-04-19 devnull 	v->store.fmt = 's';
258 564ca709 2004-04-19 devnull 	v->set = 1;
259 564ca709 2004-04-19 devnull 	v->store.u.string = strnode(symfil ? symfil : "");
260 564ca709 2004-04-19 devnull 	v->type = TSTRING;
261 564ca709 2004-04-19 devnull 
262 564ca709 2004-04-19 devnull 	l = mkvar("systype");
263 564ca709 2004-04-19 devnull 	v = l->v;
264 564ca709 2004-04-19 devnull 	v->store.fmt = 's';
265 564ca709 2004-04-19 devnull 	v->set = 1;
266 564ca709 2004-04-19 devnull 	v->store.u.string = strnode(symhdr ? symhdr->aname : "");
267 564ca709 2004-04-19 devnull 	v->type = TSTRING;
268 564ca709 2004-04-19 devnull 
269 564ca709 2004-04-19 devnull 	l = mkvar("corefile");
270 564ca709 2004-04-19 devnull 	v = l->v;
271 564ca709 2004-04-19 devnull 	v->store.fmt = 's';
272 564ca709 2004-04-19 devnull 	v->set = 1;
273 564ca709 2004-04-19 devnull 	v->store.u.string = strnode(corfil ? corfil : "");
274 564ca709 2004-04-19 devnull 	v->type = TSTRING;
275 564ca709 2004-04-19 devnull 
276 564ca709 2004-04-19 devnull 	if(pid)
277 564ca709 2004-04-19 devnull 		sproc(pid);
278 564ca709 2004-04-19 devnull 	if(corhdr)
279 564ca709 2004-04-19 devnull 		setcore(corhdr);
280 564ca709 2004-04-19 devnull 	varreg();
281 564ca709 2004-04-19 devnull 	return 0;
282 564ca709 2004-04-19 devnull }
283 564ca709 2004-04-19 devnull 
284 564ca709 2004-04-19 devnull void
285 564ca709 2004-04-19 devnull setcore(Fhdr *hdr)
286 564ca709 2004-04-19 devnull {
287 564ca709 2004-04-19 devnull 	unmapproc(cormap);
288 564ca709 2004-04-19 devnull 	unmapfile(corhdr, cormap);
289 564ca709 2004-04-19 devnull 	free(correg);
290 564ca709 2004-04-19 devnull 	correg = nil;
291 564ca709 2004-04-19 devnull 
292 564ca709 2004-04-19 devnull 	if(hdr == nil)
293 564ca709 2004-04-19 devnull 		error("no core");
294 564ca709 2004-04-19 devnull 	if(mapfile(hdr, 0, cormap, &correg) < 0)
295 564ca709 2004-04-19 devnull 		error("mapfile %s: %r", hdr->filename);
296 564ca709 2004-04-19 devnull 	corhdr = hdr;
297 564ca709 2004-04-19 devnull 	corfil = hdr->filename;
298 564ca709 2004-04-19 devnull }
299 564ca709 2004-04-19 devnull 
300 564ca709 2004-04-19 devnull void
301 564ca709 2004-04-19 devnull die(void)
302 564ca709 2004-04-19 devnull {
303 564ca709 2004-04-19 devnull 	Lsym *s;
304 564ca709 2004-04-19 devnull 	List *f;
305 564ca709 2004-04-19 devnull 
306 564ca709 2004-04-19 devnull 	Bprint(bout, "\n");
307 564ca709 2004-04-19 devnull 
308 564ca709 2004-04-19 devnull 	s = look("proclist");
309 564ca709 2004-04-19 devnull 	if(s && s->v->type == TLIST) {
310 564ca709 2004-04-19 devnull 		for(f = s->v->store.u.l; f; f = f->next){
311 564ca709 2004-04-19 devnull 			detachproc((int)f->store.u.ival);
312 564ca709 2004-04-19 devnull 			Bprint(bout, "/bin/kill -9 %d\n", (int)f->store.u.ival);
313 564ca709 2004-04-19 devnull 		}
314 564ca709 2004-04-19 devnull 	}
315 564ca709 2004-04-19 devnull 	exits(0);
316 564ca709 2004-04-19 devnull }
317 564ca709 2004-04-19 devnull 
318 564ca709 2004-04-19 devnull void
319 564ca709 2004-04-19 devnull userinit(void)
320 564ca709 2004-04-19 devnull {
321 564ca709 2004-04-19 devnull 	Lsym *l;
322 564ca709 2004-04-19 devnull 	Node *n;
323 564ca709 2004-04-19 devnull 	char buf[128], *p;
324 564ca709 2004-04-19 devnull 
325 13e66070 2004-04-20 devnull 	sprint(buf, "#9/acid/%s", mach->name);
326 13e66070 2004-04-20 devnull 	loadmodule(unsharp(buf));
327 564ca709 2004-04-19 devnull 	p = getenv("home");
328 564ca709 2004-04-19 devnull 	if(p != 0) {
329 564ca709 2004-04-19 devnull 		sprint(buf, "%s/lib/acid", p);
330 564ca709 2004-04-19 devnull 		silent = 1;
331 564ca709 2004-04-19 devnull 		loadmodule(buf);
332 564ca709 2004-04-19 devnull 	}
333 564ca709 2004-04-19 devnull 
334 564ca709 2004-04-19 devnull 	interactive = 0;
335 564ca709 2004-04-19 devnull 	if(setjmp(err)) {
336 564ca709 2004-04-19 devnull 		unwind();
337 564ca709 2004-04-19 devnull 		return;
338 564ca709 2004-04-19 devnull 	}
339 564ca709 2004-04-19 devnull 	l = look("acidinit");
340 564ca709 2004-04-19 devnull 	if(l && l->proc) {
341 564ca709 2004-04-19 devnull 		n = an(ONAME, ZN, ZN);
342 564ca709 2004-04-19 devnull 		n->sym = l;
343 564ca709 2004-04-19 devnull 		n = an(OCALL, n, ZN);
344 564ca709 2004-04-19 devnull 		execute(n);
345 564ca709 2004-04-19 devnull 	}
346 564ca709 2004-04-19 devnull }
347 564ca709 2004-04-19 devnull 
348 564ca709 2004-04-19 devnull void
349 564ca709 2004-04-19 devnull loadmodule(char *s)
350 564ca709 2004-04-19 devnull {
351 564ca709 2004-04-19 devnull 	interactive = 0;
352 564ca709 2004-04-19 devnull 	if(setjmp(err)) {
353 564ca709 2004-04-19 devnull 		unwind();
354 564ca709 2004-04-19 devnull 		return;
355 564ca709 2004-04-19 devnull 	}
356 564ca709 2004-04-19 devnull 	pushfile(s);
357 564ca709 2004-04-19 devnull 	silent = 0;
358 564ca709 2004-04-19 devnull 	yyparse();
359 564ca709 2004-04-19 devnull 	popio();
360 564ca709 2004-04-19 devnull 	return;
361 564ca709 2004-04-19 devnull }
362 564ca709 2004-04-19 devnull 
363 564ca709 2004-04-19 devnull Node*
364 564ca709 2004-04-19 devnull an(int op, Node *l, Node *r)
365 564ca709 2004-04-19 devnull {
366 564ca709 2004-04-19 devnull 	Node *n;
367 564ca709 2004-04-19 devnull 
368 564ca709 2004-04-19 devnull 	n = gmalloc(sizeof(Node));
369 564ca709 2004-04-19 devnull 	memset(n, 0, sizeof(Node));
370 564ca709 2004-04-19 devnull 	n->gc.gclink = gcl;
371 564ca709 2004-04-19 devnull 	gcl = (Gc*)n;
372 564ca709 2004-04-19 devnull 	n->op = op;
373 564ca709 2004-04-19 devnull 	n->left = l;
374 564ca709 2004-04-19 devnull 	n->right = r;
375 564ca709 2004-04-19 devnull 	return n;
376 564ca709 2004-04-19 devnull }
377 564ca709 2004-04-19 devnull 
378 564ca709 2004-04-19 devnull List*
379 564ca709 2004-04-19 devnull al(int t)
380 564ca709 2004-04-19 devnull {
381 564ca709 2004-04-19 devnull 	List *l;
382 564ca709 2004-04-19 devnull 
383 564ca709 2004-04-19 devnull 	l = gmalloc(sizeof(List));
384 564ca709 2004-04-19 devnull 	memset(l, 0, sizeof(List));
385 564ca709 2004-04-19 devnull 	l->type = t;
386 564ca709 2004-04-19 devnull 	l->gc.gclink = gcl;
387 564ca709 2004-04-19 devnull 	gcl = (Gc*)l;
388 564ca709 2004-04-19 devnull 	return l;
389 564ca709 2004-04-19 devnull }
390 564ca709 2004-04-19 devnull 
391 564ca709 2004-04-19 devnull Node*
392 564ca709 2004-04-19 devnull con(int v)
393 564ca709 2004-04-19 devnull {
394 564ca709 2004-04-19 devnull 	Node *n;
395 564ca709 2004-04-19 devnull 
396 564ca709 2004-04-19 devnull 	n = an(OCONST, ZN, ZN);
397 564ca709 2004-04-19 devnull 	n->store.u.ival = v;
398 564ca709 2004-04-19 devnull 	n->store.fmt = 'X';
399 564ca709 2004-04-19 devnull 	n->type = TINT;
400 564ca709 2004-04-19 devnull 	return n;
401 564ca709 2004-04-19 devnull }
402 564ca709 2004-04-19 devnull 
403 564ca709 2004-04-19 devnull void
404 564ca709 2004-04-19 devnull fatal(char *fmt, ...)
405 564ca709 2004-04-19 devnull {
406 564ca709 2004-04-19 devnull 	char buf[128];
407 564ca709 2004-04-19 devnull 	va_list arg;
408 564ca709 2004-04-19 devnull 
409 564ca709 2004-04-19 devnull 	va_start(arg, fmt);
410 564ca709 2004-04-19 devnull 	vseprint(buf, buf+sizeof(buf), fmt, arg);
411 564ca709 2004-04-19 devnull 	va_end(arg);
412 564ca709 2004-04-19 devnull 	fprint(2, "%s: %Z (fatal problem) %s\n", argv0, buf);
413 564ca709 2004-04-19 devnull 	exits(buf);
414 564ca709 2004-04-19 devnull }
415 564ca709 2004-04-19 devnull 
416 564ca709 2004-04-19 devnull void
417 564ca709 2004-04-19 devnull yyerror(char *fmt, ...)
418 564ca709 2004-04-19 devnull {
419 564ca709 2004-04-19 devnull 	char buf[128];
420 564ca709 2004-04-19 devnull 	va_list arg;
421 564ca709 2004-04-19 devnull 
422 564ca709 2004-04-19 devnull 	if(strcmp(fmt, "syntax error") == 0) {
423 564ca709 2004-04-19 devnull 		yyerror("syntax error, near symbol '%s'", symbol);
424 564ca709 2004-04-19 devnull 		return;
425 564ca709 2004-04-19 devnull 	}
426 564ca709 2004-04-19 devnull 	va_start(arg, fmt);
427 564ca709 2004-04-19 devnull 	vseprint(buf, buf+sizeof(buf), fmt, arg);
428 564ca709 2004-04-19 devnull 	va_end(arg);
429 564ca709 2004-04-19 devnull 	print("%Z: %s\n", buf);
430 564ca709 2004-04-19 devnull }
431 564ca709 2004-04-19 devnull 
432 564ca709 2004-04-19 devnull void
433 564ca709 2004-04-19 devnull marktree(Node *n)
434 564ca709 2004-04-19 devnull {
435 564ca709 2004-04-19 devnull 
436 564ca709 2004-04-19 devnull 	if(n == 0)
437 564ca709 2004-04-19 devnull 		return;
438 564ca709 2004-04-19 devnull 
439 564ca709 2004-04-19 devnull 	marktree(n->left);
440 564ca709 2004-04-19 devnull 	marktree(n->right);
441 564ca709 2004-04-19 devnull 
442 564ca709 2004-04-19 devnull 	n->gc.gcmark = 1;
443 564ca709 2004-04-19 devnull 	if(n->op != OCONST)
444 564ca709 2004-04-19 devnull 		return;
445 564ca709 2004-04-19 devnull 
446 564ca709 2004-04-19 devnull 	switch(n->type) {
447 564ca709 2004-04-19 devnull 	case TSTRING:
448 564ca709 2004-04-19 devnull 		n->store.u.string->gc.gcmark = 1;
449 564ca709 2004-04-19 devnull 		break;
450 564ca709 2004-04-19 devnull 	case TLIST:
451 564ca709 2004-04-19 devnull 		marklist(n->store.u.l);
452 564ca709 2004-04-19 devnull 		break;
453 564ca709 2004-04-19 devnull 	case TCODE:
454 564ca709 2004-04-19 devnull 		marktree(n->store.u.cc);
455 564ca709 2004-04-19 devnull 		break;
456 564ca709 2004-04-19 devnull 	}
457 564ca709 2004-04-19 devnull }
458 564ca709 2004-04-19 devnull 
459 564ca709 2004-04-19 devnull void
460 564ca709 2004-04-19 devnull marklist(List *l)
461 564ca709 2004-04-19 devnull {
462 564ca709 2004-04-19 devnull 	while(l) {
463 564ca709 2004-04-19 devnull 		l->gc.gcmark = 1;
464 564ca709 2004-04-19 devnull 		switch(l->type) {
465 564ca709 2004-04-19 devnull 		case TSTRING:
466 564ca709 2004-04-19 devnull 			l->store.u.string->gc.gcmark = 1;
467 564ca709 2004-04-19 devnull 			break;
468 564ca709 2004-04-19 devnull 		case TLIST:
469 564ca709 2004-04-19 devnull 			marklist(l->store.u.l);
470 564ca709 2004-04-19 devnull 			break;
471 564ca709 2004-04-19 devnull 		case TCODE:
472 564ca709 2004-04-19 devnull 			marktree(l->store.u.cc);
473 564ca709 2004-04-19 devnull 			break;
474 564ca709 2004-04-19 devnull 		}
475 564ca709 2004-04-19 devnull 		l = l->next;
476 564ca709 2004-04-19 devnull 	}
477 564ca709 2004-04-19 devnull }
478 564ca709 2004-04-19 devnull 
479 564ca709 2004-04-19 devnull void
480 564ca709 2004-04-19 devnull gc(void)
481 564ca709 2004-04-19 devnull {
482 564ca709 2004-04-19 devnull 	int i;
483 564ca709 2004-04-19 devnull 	Lsym *f;
484 564ca709 2004-04-19 devnull 	Value *v;
485 564ca709 2004-04-19 devnull 	Gc *m, **p, *next;
486 564ca709 2004-04-19 devnull 
487 564ca709 2004-04-19 devnull 	if(dogc < Mempergc)
488 564ca709 2004-04-19 devnull 		return;
489 564ca709 2004-04-19 devnull 	dogc = 0;
490 564ca709 2004-04-19 devnull 
491 564ca709 2004-04-19 devnull 	/* Mark */
492 564ca709 2004-04-19 devnull 	for(m = gcl; m; m = m->gclink)
493 564ca709 2004-04-19 devnull 		m->gcmark = 0;
494 564ca709 2004-04-19 devnull 
495 564ca709 2004-04-19 devnull 	/* Scan */
496 564ca709 2004-04-19 devnull 	for(i = 0; i < Hashsize; i++) {
497 564ca709 2004-04-19 devnull 		for(f = hash[i]; f; f = f->hash) {
498 564ca709 2004-04-19 devnull 			marktree(f->proc);
499 564ca709 2004-04-19 devnull 			if(f->lexval != Tid)
500 564ca709 2004-04-19 devnull 				continue;
501 564ca709 2004-04-19 devnull 			for(v = f->v; v; v = v->pop) {
502 564ca709 2004-04-19 devnull 				switch(v->type) {
503 564ca709 2004-04-19 devnull 				case TSTRING:
504 564ca709 2004-04-19 devnull 					v->store.u.string->gc.gcmark = 1;
505 564ca709 2004-04-19 devnull 					break;
506 564ca709 2004-04-19 devnull 				case TLIST:
507 564ca709 2004-04-19 devnull 					marklist(v->store.u.l);
508 564ca709 2004-04-19 devnull 					break;
509 564ca709 2004-04-19 devnull 				case TCODE:
510 564ca709 2004-04-19 devnull 					marktree(v->store.u.cc);
511 564ca709 2004-04-19 devnull 					break;
512 564ca709 2004-04-19 devnull 				}
513 564ca709 2004-04-19 devnull 			}
514 564ca709 2004-04-19 devnull 		}
515 564ca709 2004-04-19 devnull 	}
516 564ca709 2004-04-19 devnull 
517 564ca709 2004-04-19 devnull 	/* Free */
518 564ca709 2004-04-19 devnull 	p = &gcl;
519 564ca709 2004-04-19 devnull 	for(m = gcl; m; m = next) {
520 564ca709 2004-04-19 devnull 		next = m->gclink;
521 564ca709 2004-04-19 devnull 		if(m->gcmark == 0) {
522 564ca709 2004-04-19 devnull 			*p = next;
523 564ca709 2004-04-19 devnull 			free(m);	/* Sleazy reliance on my malloc */
524 564ca709 2004-04-19 devnull 		}
525 564ca709 2004-04-19 devnull 		else
526 564ca709 2004-04-19 devnull 			p = &m->gclink;
527 564ca709 2004-04-19 devnull 	}
528 564ca709 2004-04-19 devnull }
529 564ca709 2004-04-19 devnull 
530 564ca709 2004-04-19 devnull void*
531 564ca709 2004-04-19 devnull gmalloc(long l)
532 564ca709 2004-04-19 devnull {
533 564ca709 2004-04-19 devnull 	void *p;
534 564ca709 2004-04-19 devnull 
535 564ca709 2004-04-19 devnull 	dogc += l;
536 564ca709 2004-04-19 devnull 	p = malloc(l);
537 564ca709 2004-04-19 devnull 	if(p == 0)
538 564ca709 2004-04-19 devnull 		fatal("out of memory");
539 564ca709 2004-04-19 devnull 	return p;
540 564ca709 2004-04-19 devnull }
541 564ca709 2004-04-19 devnull 
542 564ca709 2004-04-19 devnull void
543 564ca709 2004-04-19 devnull checkqid(int f1, int pid)
544 564ca709 2004-04-19 devnull {
545 564ca709 2004-04-19 devnull 	int fd;
546 564ca709 2004-04-19 devnull 	Dir *d1, *d2;
547 564ca709 2004-04-19 devnull 	char buf[128];
548 564ca709 2004-04-19 devnull 
549 564ca709 2004-04-19 devnull 	if(kernel)
550 564ca709 2004-04-19 devnull 		return;
551 564ca709 2004-04-19 devnull 
552 564ca709 2004-04-19 devnull 	d1 = dirfstat(f1);
553 564ca709 2004-04-19 devnull 	if(d1 == nil){
554 564ca709 2004-04-19 devnull 		print("checkqid: (qid not checked) dirfstat: %r\n");
555 564ca709 2004-04-19 devnull 		return;
556 564ca709 2004-04-19 devnull 	}
557 564ca709 2004-04-19 devnull 
558 564ca709 2004-04-19 devnull 	sprint(buf, "/proc/%d/text", pid);
559 564ca709 2004-04-19 devnull 	fd = open(buf, OREAD);
560 564ca709 2004-04-19 devnull 	if(fd < 0 || (d2 = dirfstat(fd)) == nil){
561 564ca709 2004-04-19 devnull 		print("checkqid: (qid not checked) dirstat %s: %r\n", buf);
562 564ca709 2004-04-19 devnull 		free(d1);
563 564ca709 2004-04-19 devnull 		if(fd >= 0)
564 564ca709 2004-04-19 devnull 			close(fd);
565 564ca709 2004-04-19 devnull 		return;
566 564ca709 2004-04-19 devnull 	}
567 564ca709 2004-04-19 devnull 
568 564ca709 2004-04-19 devnull 	close(fd);
569 564ca709 2004-04-19 devnull 
570 564ca709 2004-04-19 devnull 	if(d1->qid.path != d2->qid.path || d1->qid.vers != d2->qid.vers || d1->qid.type != d2->qid.type){
571 564ca709 2004-04-19 devnull 		print("path %llux %llux vers %lud %lud type %d %d\n",
572 564ca709 2004-04-19 devnull 			d1->qid.path, d2->qid.path, d1->qid.vers, d2->qid.vers, d1->qid.type, d2->qid.type);
573 564ca709 2004-04-19 devnull 		print("warning: image does not match text for pid %d\n", pid);
574 564ca709 2004-04-19 devnull 	}
575 564ca709 2004-04-19 devnull 	free(d1);
576 564ca709 2004-04-19 devnull 	free(d2);
577 564ca709 2004-04-19 devnull }
578 564ca709 2004-04-19 devnull 
579 564ca709 2004-04-19 devnull void
580 564ca709 2004-04-19 devnull catcher(void *junk, char *s)
581 564ca709 2004-04-19 devnull {
582 564ca709 2004-04-19 devnull 	USED(junk);
583 564ca709 2004-04-19 devnull 
584 564ca709 2004-04-19 devnull 	if(strstr(s, "interrupt")) {
585 564ca709 2004-04-19 devnull 		gotint = 1;
586 564ca709 2004-04-19 devnull 		noted(NCONT);
587 564ca709 2004-04-19 devnull 	}
588 564ca709 2004-04-19 devnull 	if(strstr(s, "child"))
589 564ca709 2004-04-19 devnull 		noted(NCONT);
590 564ca709 2004-04-19 devnull fprint(2, "note: %s\n", s);
591 564ca709 2004-04-19 devnull 	noted(NDFLT);
592 564ca709 2004-04-19 devnull }
593 564ca709 2004-04-19 devnull 
594 564ca709 2004-04-19 devnull char*
595 564ca709 2004-04-19 devnull system(void)
596 564ca709 2004-04-19 devnull {
597 564ca709 2004-04-19 devnull 	char *cpu, *p, *q;
598 564ca709 2004-04-19 devnull 	static char kernel[128];
599 564ca709 2004-04-19 devnull 
600 564ca709 2004-04-19 devnull 	cpu = getenv("cputype");
601 564ca709 2004-04-19 devnull 	if(cpu == 0) {
602 564ca709 2004-04-19 devnull 		cpu = "mips";
603 564ca709 2004-04-19 devnull 		print("$cputype not set; assuming %s\n", cpu);
604 564ca709 2004-04-19 devnull 	}
605 564ca709 2004-04-19 devnull 	p = getenv("terminal");
606 564ca709 2004-04-19 devnull 	if(p == 0 || (p=strchr(p, ' ')) == 0 || p[1] == ' ' || p[1] == 0) {
607 564ca709 2004-04-19 devnull 		p = "9power";
608 564ca709 2004-04-19 devnull 		print("missing or bad $terminal; assuming %s\n", p);
609 564ca709 2004-04-19 devnull 	}
610 564ca709 2004-04-19 devnull 	else{
611 564ca709 2004-04-19 devnull 		p++;
612 564ca709 2004-04-19 devnull 		q = strchr(p, ' ');
613 564ca709 2004-04-19 devnull 		if(q)
614 564ca709 2004-04-19 devnull 			*q = 0;
615 564ca709 2004-04-19 devnull 		sprint(kernel, "/%s/9%s", cpu, p);
616 564ca709 2004-04-19 devnull 	}
617 564ca709 2004-04-19 devnull 	return kernel;
618 564ca709 2004-04-19 devnull }
619 564ca709 2004-04-19 devnull 
620 564ca709 2004-04-19 devnull int
621 564ca709 2004-04-19 devnull isnumeric(char *s)
622 564ca709 2004-04-19 devnull {
623 564ca709 2004-04-19 devnull 	while(*s) {
624 564ca709 2004-04-19 devnull 		if(*s < '0' || *s > '9')
625 564ca709 2004-04-19 devnull 			return 0;
626 564ca709 2004-04-19 devnull 		s++;
627 564ca709 2004-04-19 devnull 	}
628 564ca709 2004-04-19 devnull 	return 1;
629 564ca709 2004-04-19 devnull }
630 564ca709 2004-04-19 devnull 
631 564ca709 2004-04-19 devnull int
632 564ca709 2004-04-19 devnull xfmt(Fmt *f)
633 564ca709 2004-04-19 devnull {
634 564ca709 2004-04-19 devnull 	f->flags ^= FmtSharp;
635 564ca709 2004-04-19 devnull 	return __ifmt(f);
636 564ca709 2004-04-19 devnull }