From: Charles B. Haley <cbh@research.uucp>
Date: Thu, 1 Nov 1979 04:29:52 +0000 (-0800)
Subject: BSD 3 development
X-Git-Tag: BSD-3~776
X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/commitdiff_plain/eadd54c198376d55ea6671d2bb2b8f0a4f9f1da4

BSD 3 development
Work on file usr/src/cmd/pi/y.tab.c
Work on file usr/src/cmd/pi/y.tab.h
Work on file usr/src/cmd/pi/yy.h
Work on file usr/src/cmd/pi/yycopy.c
Work on file usr/src/cmd/pi/yycosts.c
Work on file usr/src/cmd/pi/yyerror.c

Co-Authored-By: Bill Joy <wnj@ucbvax.Berkeley.EDU>
Co-Authored-By: Ken Thompson <ken@research.uucp>
Synthesized-from: 3bsd
---

diff --git a/usr/src/cmd/pi/y.tab.c b/usr/src/cmd/pi/y.tab.c
new file mode 100644
index 0000000000..e2f5b8319b
--- /dev/null
+++ b/usr/src/cmd/pi/y.tab.c
@@ -0,0 +1,582 @@
+/* Copyright (c) 1979 Regents of the University of California */
+
+#include "whoami"
+#include "0.h"
+#include "yy.h"
+#include "tree.h"
+
+#ifdef PI
+#define	lineof(l)	l
+#define	line2of(l)	l
+#endif
+
+extern yyerrflag;
+
+int *yyval 0;
+int *yypv;
+yyactr(__np__){
+	register int **yyYpv;
+	register int *p, *q;
+	yyYpv = yypv;
+
+switch(__np__){
+
+case 1: funcend(yyYpv[1], yyYpv[4], lineof(yyYpv[5])); break;
+case 2: yyval = funcbody(funchdr(tree5(T_PROG, lineof(yyYpv[1]), yyYpv[2], fixlist(yyYpv[4]), NIL))); break;
+case 3: {
+			yyPerror("Malformed program statement", PPROG);
+			/*
+			 * Should make a program statement
+			 * with "input" and "output" here.
+			 */
+			yyval = funcbody(funchdr(tree5(T_PROG, lineof(yyYpv[1]), NIL, NIL, NIL)));
+		  } break;
+case 4: {
+			yyval = tree3(T_BSTL, lineof(yyYpv[1]), fixlist(yyYpv[2]));
+			if (yyYpv[3] < 0)
+				brerror(yyYpv[1], "begin");
+		  } break;
+case 5: trfree(); break;
+case 6: {
+Derror:
+			constend(), typeend(), varend(), trfree();
+			yyPerror("Malformed declaration", PDECL);
+		  } break;
+case 7: trfree(); break;
+case 9: constend(); break;
+case 10: typeend(); break;
+case 11: varend(); break;
+case 12: label(fixlist(yyYpv[2]), lineof(yyYpv[1])); break;
+case 13: yyval = newlist(yyYpv[1] == NIL ? NIL : *hash(yyYpv[1], 1)); break;
+case 14: yyval = addlist(yyYpv[1], yyYpv[3] == NIL ? NIL : *hash(yyYpv[3], 1)); break;
+case 15: constbeg(yyYpv[1], line2of(yyYpv[2])), const(lineof(yyYpv[3]), yyYpv[2], yyYpv[4]); break;
+case 16: const(lineof(yyYpv[3]), yyYpv[2], yyYpv[4]); break;
+case 17: {
+			constbeg(yyYpv[1], line2of(yyYpv[1]));
+Cerror:
+			yyPerror("Malformed const declaration", PDECL);
+		  } break;
+case 18: goto Cerror; break;
+case 19: typebeg(yyYpv[1], line2of(yyYpv[2])), type(lineof(yyYpv[3]), yyYpv[2], yyYpv[4]); break;
+case 20: type(lineof(yyYpv[3]), yyYpv[2], yyYpv[4]); break;
+case 21: {
+			typebeg(yyYpv[1], line2of(yyYpv[1]));
+Terror:
+			yyPerror("Malformed type declaration", PDECL);
+		  } break;
+case 22: goto Terror; break;
+case 23: varbeg(yyYpv[1], line2of(yyYpv[3])), var(lineof(yyYpv[3]), fixlist(yyYpv[2]), yyYpv[4]); break;
+case 24: var(lineof(yyYpv[3]), fixlist(yyYpv[2]), yyYpv[4]); break;
+case 25: {
+			varbeg(yyYpv[1], line2of(yyYpv[1]));
+Verror:
+			yyPerror("Malformed var declaration", PDECL);
+		  } break;
+case 26: goto Verror; break;
+case 28: trfree(); break;
+case 29: funcfwd(yyYpv[1]); break;
+case 30: funcend(yyYpv[1], yyYpv[4], lineof(yyYpv[5])); break;
+case 31: funcbody(yyYpv[1]); break;
+case 32: yyval = funchdr(tree5(yyYpv[1], lineof(yyYpv[5]), yyYpv[2], yyYpv[3], yyYpv[4])); break;
+case 33: yyval = T_PDEC; break;
+case 34: yyval = T_FDEC; break;
+case 35: yyval = fixlist(yyYpv[2]); break;
+case 36: yyval = NIL; break;
+case 37: yyval = tree3(T_PVAL, fixlist(yyYpv[1]), yyYpv[3]); break;
+case 38: yyval = tree3(T_PVAR, fixlist(yyYpv[2]), yyYpv[4]); break;
+case 39: yyval = tree3(T_PFUNC, fixlist(yyYpv[2]), yyYpv[4]); break;
+case 40: yyval = tree2(T_PPROC, fixlist(yyYpv[2])); break;
+case 41: yyval = yyYpv[2]; break;
+case 42: yyval = NIL; break;
+case 43: yyval = newlist(yyYpv[1]); break;
+case 44: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 45: yyval = tree2(T_CSTRNG, yyYpv[1]); break;
+case 47: yyval = tree2(T_PLUSC, yyYpv[2]); break;
+case 48: yyval = tree2(T_MINUSC, yyYpv[2]); break;
+case 49: yyval = tree2(T_ID, yyYpv[1]); break;
+case 50: yyval = tree2(T_CINT, yyYpv[1]); break;
+case 51: yyval = tree2(T_CBINT, yyYpv[1]); break;
+case 52: yyval = tree2(T_CFINT, yyYpv[1]); break;
+case 53: yyval = newlist(yyYpv[1]); break;
+case 54: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 56: yyval = tree3(T_TYPTR, lineof(yyYpv[1]), tree2(T_ID, yyYpv[2])); break;
+case 58: yyval = tree3(T_TYPACK, lineof(yyYpv[1]), yyYpv[2]); break;
+case 60: yyval = tree3(T_TYSCAL, lineof(yyYpv[1]), fixlist(yyYpv[2])); break;
+case 61: yyval = tree4(T_TYRANG, lineof(yyYpv[2]), yyYpv[1], yyYpv[3]); break;
+case 62: yyval = tree4(T_TYARY, lineof(yyYpv[1]), fixlist(yyYpv[3]), yyYpv[6]); break;
+case 63: yyval = tree3(T_TYFILE, lineof(yyYpv[1]), yyYpv[3]); break;
+case 64: yyval = tree3(T_TYSET, lineof(yyYpv[1]), yyYpv[3]); break;
+case 65: {
+			yyval = setuptyrec( lineof(yyYpv[1]), yyYpv[2]);
+			if (yyYpv[3] < 0)
+				brerror(yyYpv[1], "record");
+		  } break;
+case 66: yyval = newlist(yyYpv[1]); break;
+case 67: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 68: yyval = tree4(T_FLDLST, lineof(NIL), fixlist(yyYpv[1]), yyYpv[2]); break;
+case 69: yyval = newlist(yyYpv[1]); break;
+case 70: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 71: yyPerror("Malformed record declaration", PDECL); break;
+case 72: yyval = NIL; break;
+case 73: yyval = tree4(T_RFIELD, lineof(yyYpv[2]), fixlist(yyYpv[1]), yyYpv[3]); break;
+case 74: yyval = NIL; break;
+case 75: yyval = tree5(T_TYVARPT, lineof(yyYpv[1]), NIL, yyYpv[2], fixlist(yyYpv[4])); break;
+case 76: yyval = tree5(T_TYVARPT, lineof(yyYpv[1]), yyYpv[2], yyYpv[4], fixlist(yyYpv[6])); break;
+case 77: yyval = newlist(yyYpv[1]); break;
+case 78: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 79: yyPerror("Malformed record declaration", PDECL); break;
+case 80: yyval = NIL; break;
+case 81: yyval = tree4(T_TYVARNT, lineof(yyYpv[2]), fixlist(yyYpv[1]), yyYpv[4]); break;
+case 82: yyval = tree4(T_TYVARNT, lineof(yyYpv[2]), fixlist(yyYpv[1]), NIL); break;
+case 83: yyval = newlist(yyYpv[1]); break;
+case 84: {
+			if ((p = yyYpv[1]) != NIL && (q = p[1])[0] == T_IFX) {
+				q[0] = T_IFEL;
+				q[4] = yyYpv[2];
+			} else
+				yyval = addlist(yyYpv[1], yyYpv[2]);
+		  } break;
+case 85: if ((q = yyYpv[1]) != NIL && (p = q[1]) != NIL && p[0] == T_IF) {
+			if (yychar < 0)
+				yychar = yylex();
+			if (yyshifts >= 2 && yychar == YELSE) {
+				recovered();
+				copy(&Y, &OY, sizeof Y);
+				yerror("Deleted ';' before keyword else");
+				yychar = yylex();
+				p[0] = T_IFX;
+			}
+		  } break;
+case 86: yyval = newlist(yyYpv[1]); break;
+case 87: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 88: {
+			yyval = NIL;
+Kerror:
+			yyPerror("Malformed statement in case", PSTAT);
+		  } break;
+case 89: goto Kerror; break;
+case 90: yyval = tree4(T_CSTAT, lineof(yyYpv[2]), fixlist(yyYpv[1]), yyYpv[3]); break;
+case 91: yyval = tree4(T_CSTAT, lineof(yyYpv[1]), NIL, yyYpv[2]); break;
+case 92: yyval = NIL; break;
+case 93: yyval = NIL; break;
+case 94: yyval = tree4(T_LABEL, lineof(yyYpv[2]), yyYpv[1] == NIL ? NIL : *hash(yyYpv[1], 1), yyYpv[3]); break;
+case 95: yyval = tree4(T_PCALL, lineof(yyline), yyYpv[1], NIL); break;
+case 96: yyval = tree4(T_PCALL, lineof(yyYpv[2]), yyYpv[1], fixlist(yyYpv[3])); break;
+case 97: goto NSerror; break;
+case 99: {
+			yyval = tree3(T_BLOCK, lineof(yyYpv[1]), fixlist(yyYpv[2]));
+			if (yyYpv[3] < 0)
+				brerror(yyYpv[1], "begin");
+		  } break;
+case 100: {
+			yyval = tree4(T_CASE, lineof(yyYpv[1]), yyYpv[2], fixlist(yyYpv[4]));
+			if (yyYpv[5] < 0)
+				brerror(yyYpv[1], "case");
+		  } break;
+case 101: yyval = tree4(T_WITH, lineof(yyYpv[1]), fixlist(yyYpv[2]), yyYpv[4]); break;
+case 102: yyval = tree4(T_WHILE, lineof(yyYpv[1]), yyYpv[2], yyYpv[4]); break;
+case 103: yyval = tree4(T_REPEAT, lineof(yyYpv[3]), fixlist(yyYpv[2]), yyYpv[4]); break;
+case 104: yyval = tree5(T_FORU, lineof(yyYpv[1]), yyYpv[2], yyYpv[4], yyYpv[6]); break;
+case 105: yyval = tree5(T_FORD, lineof(yyYpv[1]), yyYpv[2], yyYpv[4], yyYpv[6]); break;
+case 106: yyval = tree3(T_GOTO, lineof(yyYpv[1]), *hash(yyYpv[2], 1)); break;
+case 107: yyval = tree5(T_IF, lineof(yyYpv[1]), yyYpv[2], yyYpv[4], NIL); break;
+case 108: yyval = tree5(T_IFEL, lineof(yyYpv[1]), yyYpv[2], yyYpv[4], yyYpv[6]); break;
+case 109: yyval = tree5(T_IFEL, lineof(yyYpv[1]), yyYpv[2], yyYpv[4], NIL); break;
+case 110: yyval = tree3(T_ASRT, lineof(yyYpv[1]), yyYpv[3]); break;
+case 111: {
+NSerror:
+			yyval = NIL;
+Serror:
+			yyPerror("Malformed statement", PSTAT);
+		  } break;
+case 112: yyval = tree4(T_ASGN, lineof(yyYpv[2]), yyYpv[1], yyYpv[4]); break;
+case 113: {
+NEerror:
+			yyval = NIL;
+Eerror:
+			yyPerror("Missing/malformed expression", PEXPR);
+		  } break;
+case 114: yyval = tree4(yyYpv[2], yyYpv[1][1] == SAWCON ? yyYpv[3][1] : yyYpv[1][1], yyYpv[1], yyYpv[3]); break;
+case 115: yyval = tree3(T_PLUS, yyYpv[2][1], yyYpv[2]); break;
+case 116: yyval = tree3(T_MINUS, yyYpv[2][1], yyYpv[2]); break;
+case 117: yyval = tree4(yyYpv[2], yyYpv[1][1] == SAWCON ? yyYpv[3][1] : yyYpv[1][1], yyYpv[1], yyYpv[3]); break;
+case 118: yyval = tree4(yyYpv[2], yyYpv[1][1] == SAWCON ? yyYpv[3][1] : yyYpv[1][1], yyYpv[1], yyYpv[3]); break;
+case 119: yyval = tree2(T_NIL, NOCON); break;
+case 120: yyval = tree3(T_STRNG, SAWCON, yyYpv[1]); break;
+case 121: yyval = tree3(T_INT, NOCON, yyYpv[1]); break;
+case 122: yyval = tree3(T_BINT, NOCON, yyYpv[1]); break;
+case 123: yyval = tree3(T_FINT, NOCON, yyYpv[1]); break;
+case 125: goto NEerror; break;
+case 126: yyval = tree4(T_FCALL, NOCON, yyYpv[1], fixlist(yyYpv[3])); break;
+case 127: yyval = yyYpv[2]; break;
+case 128: yyval = tree3(T_NOT, NOCON, yyYpv[2]); break;
+case 129: yyval = tree3(T_CSET, SAWCON, fixlist(yyYpv[2])); break;
+case 130: yyval = tree3(T_CSET, SAWCON, NIL); break;
+case 131: yyval = newlist(yyYpv[1]); break;
+case 132: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 134: yyval = tree3(T_RANG, yyYpv[1], yyYpv[3]); break;
+case 135: {
+			yyval = setupvar(yyYpv[1], NIL);
+		  } break;
+case 136: yyYpv[1][3] = fixlist(yyYpv[1][3]); break;
+case 137: yyval = setupvar(yyYpv[1], tree2(T_ARY, fixlist(yyYpv[3]))); break;
+case 138: yyYpv[1][3] = addlist(yyYpv[1][3], tree2(T_ARY, fixlist(yyYpv[3]))); break;
+case 139: yyval = setupvar(yyYpv[1], setupfield(yyYpv[3], NIL)); break;
+case 140: yyYpv[1][3] = addlist(yyYpv[1][3], setupfield(yyYpv[3], NIL)); break;
+case 141: yyval = setupvar(yyYpv[1], tree1(T_PTR)); break;
+case 142: yyYpv[1][3] = addlist(yyYpv[1][3], tree1(T_PTR)); break;
+case 144: yyval = tree4(T_WEXP, yyYpv[1], yyYpv[3], NIL); break;
+case 145: yyval = tree4(T_WEXP, yyYpv[1], yyYpv[3], yyYpv[5]); break;
+case 146: yyval = tree4(T_WEXP, yyYpv[1], NIL, yyYpv[2]); break;
+case 147: yyval = tree4(T_WEXP, yyYpv[1], yyYpv[3], yyYpv[4]); break;
+case 148: yyval = OCT; break;
+case 149: yyval = HEX; break;
+case 150: yyval = newlist(yyYpv[1]); break;
+case 151: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 152: yyval = newlist(yyYpv[1]); break;
+case 153: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 154: yyval = T_EQ; break;
+case 155: yyval = T_LT; break;
+case 156: yyval = T_GT; break;
+case 157: yyval = T_NE; break;
+case 158: yyval = T_LE; break;
+case 159: yyval = T_GE; break;
+case 160: yyval = T_IN; break;
+case 161: yyval = T_ADD; break;
+case 162: yyval = T_SUB; break;
+case 163: yyval = T_OR; break;
+case 164: yyval = T_OR; break;
+case 165: yyval = T_MULT; break;
+case 166: yyval = T_DIVD; break;
+case 167: yyval = T_DIV; break;
+case 168: yyval = T_MOD; break;
+case 169: yyval = T_AND; break;
+case 170: yyval = T_AND; break;
+case 173: yyval = newlist(yyYpv[1]); break;
+case 174: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 175: yyval = newlist(yyYpv[1]); break;
+case 176: yyval = addlist(yyYpv[1], yyYpv[3]); break;
+case 178: {
+			yyval = tree3(T_TYID, lineof(yyline), yyYpv[1]);
+		  } break;
+}
+}
+
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+,8293,-280,8286,-284,8282,-290,8283,-298,8285,-43
+,8280,-45,8281,-40,8290,-91,8292,-126,8294,4096
+,-273,8390,4096,12430,12429,12317,-259,8213,-271,8218
+,-285,8217,4096,-58,8395,12330,-271,8400,-273,8225
+,-285,8401,-295,8399,4096,-59,8402,4096,12333,12334
+,-273,8324,-276,8321,-280,8323,-298,8322,4096,12337
+,12338,12339,12340,12465,-59,8405,4096,12343,-273,8406
+,4096,12345,-258,8333,-268,8334,-287,8336,-289,8335
+,4096,12347,-264,8409,4096,-91,8410,4096,-281,8411
+,4096,-281,8412,4096,-273,8225,12360,-264,12465,12466
+,-59,8417,4096,12464,12302,-59,8418,4096,-59,8419
+,4096,-59,8420,4096,12290,12382,-41,8421,-44,8422
+,4096,12440,-257,8366,-262,8364,-275,8357,-278,8365
+,-282,8360,-299,8425,-300,8426,-60,8355,-61,8354
+,-62,8356,-43,8358,-45,8359,-124,8361,-42,8362
+,-47,8363,-38,8367,-58,8423,12431,12387,-256,8429
+,-267,12380,-273,8324,-276,8321,-280,8323,-290,8316
+,-298,8322,-302,8431,-43,8318,-45,8319,-59,12380
+,4096,12442,-61,8437,-62,8436,12443,-61,8438,12444
+,12448,12449,12450,12451,12452,12453,12454,12455,12456,12457
+,12458,-257,8366,-262,8364,-278,8365,-42,8362,-47
+,8363,-38,8367,12403,-257,8366,-262,8364,-278,8365
+,-42,8362,-47,8363,-38,8367,12404,12413,-257,8366
+,-262,8364,-275,8357,-278,8365,-282,8360,-60,8355
+,-61,8354,-62,8356,-43,8358,-45,8359,-124,8361
+,-42,8362,-47,8363,-38,8367,-41,8440,4096,12416
+,-44,8442,-93,8441,4096,12418,12419,-257,8366,-262
+,8364,-264,8443,-275,8357,-278,8365,-282,8360,-60
+,8355,-61,8354,-62,8356,-43,8358,-45,8359,-124
+,8361,-42,8362,-47,8363,-38,8367,12421,-273,8297
+,4096,-257,8366,-262,8364,-275,8357,-278,8365,-282
+,8360,-60,8355,-61,8354,-62,8356,-43,8358,-45
+,8359,-124,8361,-42,8362,-47,8363,-38,8367,-41
+,8451,4096,-44,8454,-93,8453,4096,-257,8366,-262
+,8364,-275,8357,-278,8365,-282,8360,-60,8355,-61
+,8354,-62,8356,-43,8358,-45,8359,-124,8361,-42
+,8362,-47,8363,-38,8367,12438,12428,12471,-44,8454
+,-93,8455,4096,12427,-59,8456,4096,-59,8457,4096
+,-41,8459,-59,8460,4096,12331,-44,8264,-58,8461
+,4096,12304,12335,12336,12308,12344,12346,-41,8465,-44
+,8264,4096,-273,8337,-276,8321,-280,8323,-290,8316
+,-298,8322,-43,8318,-45,8319,-40,8331,4096,-273
+,8337,-276,8321,-280,8323,-290,8316,-298,8322,-43
+,8318,-45,8319,-40,8331,4096,-267,8471,4096,-256
+,8474,-260,8475,-267,12362,-41,12362,-59,8473,4096
+,12357,-44,8264,-58,8476,4096,12312,12303,12307,12311
+,12384,-256,8279,-273,8288,-276,8284,-279,8293,-280
+,8286,-284,8282,-290,8283,-298,8285,-43,8280,-45
+,8281,-40,8290,-91,8292,-126,8294,4096,12434,12436
+,12437,-256,8480,-267,8481,-59,8479,4096,12374,12376
+,-44,8482,-58,8483,4096,12341,-257,8366,-262,8364
+,-275,4096,-278,8365,-282,8360,-60,4096,-61,4096
+,-62,4096,-43,8358,-45,8359,-124,8361,-42,8362
+,-47,8363,-38,8367,12402,-257,8366,-262,8364,-278
+,8365,-42,8362,-47,8363,-38,8367,12405,12406,12445
+,12446,12447,-41,8485,-44,8422,4096,12415,12417,-256
+,8279,-273,8288,-276,8284,-279,8293,-280,8286,-284
+,8282,-290,8283,-298,8285,-43,8280,-45,8281,-40
+,8290,-91,8292,-126,8294,4096,12389,12462,12390,-257
+,8366,-262,8364,-275,8357,-278,8365,-282,8360,-60
+,8355,-61,8354,-62,8356,-43,8358,-45,8359,-124
+,8361,-42,8362,-47,8363,-38,8367,12391,-257,8366
+,-262,8364,-263,8488,-275,8357,-278,8365,-282,8360
+,-60,8355,-61,8354,-62,8356,-43,8358,-45,8359
+,-124,8361,-42,8362,-47,8363,-38,8367,4096,-257
+,8366,-262,8364,-263,8489,-275,8357,-278,8365,-282
+,8360,-60,8355,-61,8354,-62,8356,-43,8358,-45
+,8359,-124,8361,-42,8362,-47,8363,-38,8367,4096
+,-266,8490,12395,12398,-257,8366,-262,8364,-275,8357
+,-278,8365,-282,8360,-60,8355,-61,8354,-62,8356
+,-43,8358,-45,8359,-124,8361,-42,8362,-47,8363
+,-38,8367,12400,12426,12425,12318,12320,12329,12323,-271
+,8400,-273,8225,-285,8401,-295,8399,4096,-44,8264
+,-58,8494,4096,-44,8264,-58,8495,4096,-44,8264
+,12328,12348,12349,-44,8497,-93,8496,4096,12354,12351
+,12352,12353,12356,-273,8225,12360,12359,-273,8500,4096
+,12441,-257,8366,-262,8364,-275,8357,-278,8365,-282
+,8360,-299,8425,-300,8426,-60,8355,-61,8354,-62
+,8356,-43,8358,-45,8359,-124,8361,-42,8362,-47
+,8363,-38,8367,-58,8502,12432,-273,8324,-276,8321
+,-280,8323,-290,8316,-298,8322,-302,8431,-43,8318
+,-45,8319,12380,12377,12388,12379,12414,12420,-257,8366
+,-262,8364,-275,8357,-278,8365,-282,8360,-60,8355
+,-61,8354,-62,8356,-43,8358,-45,8359,-124,8361
+,-42,8362,-47,8363,-38,8367,12422,-256,8252,-259
+,8243,-260,8244,-266,12381,-267,12381,-269,8248,-272
+,8249,-273,8241,-274,8250,-276,8239,-288,8247,-294
+,12381,-296,8246,-297,8245,-301,8251,-59,12381,4096
+,-257,8366,-262,8364,-275,8357,-278,8365,-282,8360
+,-60,8355,-61,8354,-62,8356,-43,8358,-45,8359
+,-124,8361,-42,8362,-47,8363,-38,8367,12439,12332
+,12325,-281,8512,4096,12358,-281,8514,4096,-58,8515
+,12466,12361,12435,12375,12342,12378,12392,12393,12396,12326
+,12327,12355,-273,8324,-276,8321,-280,8323,-290,8316
+,-298,8322,-43,8318,-45,8319,12368,-273,8522,4096
+,-257,8366,-262,8364,-275,8357,-278,8365,-282,8360
+,-60,8355,-61,8354,-62,8356,-43,8358,-45,8359
+,-124,8361,-42,8362,-47,8363,-38,8367,12433,12350
+,-256,8524,-267,12363,-41,12363,-59,8523,4096,12365
+,-44,8482,-58,8525,4096,-281,8526,4096,12466,-273
+,8324,-276,8321,-280,8323,-290,8316,-298,8322,-43
+,8318,-45,8319,12368,12367,-40,8528,4096,12366,-273
+,8225,-41,8531,12360,-256,8524,-267,12364,-41,12364
+,-59,8523,4096,-41,8532,4096,12370,12369,-1};
+
+int yypact[] {0,1,4,7,8,13,30,33,34,41
+,42,43,44,63,82,101,104,109,114,119
+,122,125,126,155,7,158,161,162,163,166
+,167,170,171,176,177,178,183,184,187,188
+,191,192,197,198,203,204,209,210,241,244
+,247,268,126,269,296,269,126,299,302,269
+,305,308,309,312,319,322,325,328,331,348
+,351,366,366,395,398,399,351,366,366,402
+,405,406,407,210,408,435,436,441,472,269
+,269,473,474,475,476,477,478,479,550,269
+,269,553,582,583,584,589,590,597,628,633
+,638,639,269,670,673,700,703,673,700,704
+,705,706,713,716,725,728,729,730,730,739
+,740,741,742,743,744,747,748,751,752,761
+,119,762,765,768,771,774,777,780,783,784
+,785,788,791,794,795,796,801,802,837,838
+,269,269,269,861,862,867,870,871,872,873
+,874,875,876,877,878,879,880,881,894,907
+,408,908,939,940,945,946,947,210,978,210
+,269,269,269,210,981,269,1012,1017,1046,1047
+,1048,1053,1054,1057,366,1060,1065,1066,119,119
+,119,1071,1072,1073,1074,1075,1076,1077,351,1082
+,366,1099,1116,1119,1130,1131,1136,1137,1138,1139
+,1140,1141,269,1168,1169,1170,1171,1178,1179,1180
+,210,1185,1186,1215,1228,1229,1230,1231,1232,1237
+,1238,1239,269,1266,1267,1268,1269,1298,1329,1360
+,1363,1364,1393,269,1394,1395,1396,1397,1398,1399
+,366,1408,1413,1418,1421,1422,1423,1428,1429,1430
+,1431,1432,1433,1436,1437,366,1440,1441,1476,1493
+,1494,351,210,1495,1496,1497,1498,210,210,1527
+,1560,1589,1590,366,366,1591,1099,1594,1595,1598
+,1601,269,1602,1603,1604,1605,1606,1607,1608,1609
+,1610,366,1611,1612,1627,1630,1659,1660,1669,1670
+,1675,1678,1679,1694,1695,1612,1698,1699,1704,1713
+,1716,1717,-1};
+
+int yyr1[] {0,1,2,2,5,3,3,3,8,8
+,8,8,9,13,13,10,10,10,10,11
+,11,11,11,12,12,12,12,4,4,16
+,16,18,17,19,19,20,20,23,23,23
+,23,21,21,22,22,14,14,14,14,24
+,24,24,24,26,26,15,15,15,15,27
+,27,27,28,28,28,28,30,30,31,32
+,32,32,34,34,33,33,33,35,35,35
+,36,36,36,7,7,38,39,39,39,39
+,40,40,40,37,37,37,37,37,37,37
+,37,37,37,37,37,37,37,37,37,37
+,37,37,43,44,44,44,44,44,44,44
+,44,44,44,44,44,44,44,44,44,44
+,44,52,52,53,53,46,46,54,54,54
+,54,54,54,60,60,60,60,60,61,61
+,56,56,42,42,47,47,47,47,47,47
+,47,48,48,48,48,49,49,49,49,49
+,49,51,51,45,45,6,6,25,29,62
+,55,59,57,58,41,50,-1};
+
+int yyr2[] {0,5,6,2,3,2,2,0,1,1
+,1,1,3,1,3,5,5,2,2,5
+,5,2,2,5,5,2,2,0,2,3
+,5,1,5,1,1,3,0,3,4,4
+,2,2,0,1,3,1,1,2,2,1
+,1,1,1,1,3,1,2,1,2,1
+,3,3,6,3,3,3,1,3,2,1
+,3,2,0,3,0,4,6,1,3,2
+,0,5,4,1,2,2,1,3,1,2
+,3,2,0,0,3,1,4,2,1,3
+,5,4,4,4,6,6,2,4,6,5
+,4,1,4,1,3,2,2,3,3,1
+,1,1,1,1,1,2,4,3,2,3
+,2,1,3,1,3,1,1,4,4,3
+,3,2,2,1,3,5,2,4,1,1
+,1,3,1,3,1,1,1,2,2,2
+,1,1,1,1,1,1,1,1,1,1
+,1,1,1,1,3,1,3,1,1,1
+,1,1,1,1,1,1,-1};
+
+int yygo[] {0,-1,1,-1,2,23,67,-1,4,67
+,120,-1,7,120,201,-1,19,13,31,17
+,40,18,42,122,206,139,216,207,270,208
+,271,209,272,268,206,-1,224,51,85,55
+,107,-1,44,-1,8,-1,10,-1,11,-1
+,12,-1,13,-1,34,69,123,75,149,158
+,240,217,274,287,240,290,313,322,240,331
+,240,334,240,-1,140,71,146,76,150,77
+,151,203,266,219,277,269,301,284,309,302
+,318,303,319,320,325,-1,133,-1,20,-1
+,22,-1,23,-1,24,-1,121,-1,202,-1
+,204,268,300,-1,205,126,211,127,212,-1
+,125,-1,128,158,238,287,238,-1,328,218
+,276,220,278,305,321,-1,134,137,215,-1
+,136,283,307,323,329,-1,138,-1,275,336
+,338,-1,221,-1,222,-1,280,281,306,-1
+,223,334,337,-1,326,331,335,-1,327,46
+,81,82,153,186,252,188,254,192,258,239
+,292,291,314,296,315,297,316,298,317,-1
+,45,-1,46,-1,235,287,312,-1,236,-1
+,48,179,247,-1,154,56,108,-1,50,52
+,86,54,106,58,110,88,176,89,177,98
+,180,99,181,100,185,111,193,113,196,116
+,196,159,241,160,242,161,243,189,255,190
+,256,191,257,194,260,231,286,250,185,251
+,295,262,299,310,324,-1,156,-1,103,21
+,61,46,61,51,61,53,104,55,61,56
+,61,82,61,186,61,187,253,188,61,192
+,61,239,61,291,61,296,61,297,61,298
+,61,-1,95,-1,159,-1,160,-1,161,-1
+,97,-1,99,-1,182,250,294,-1,184,-1
+,62,-1,63,116,199,-1,195,-1,64,117
+,200,-1,197,-1,65,230,285,-1,155,286
+,311,-1,232,-1,-1,-1};
+
+int yypgo[] {0,1,3,5,9,13,17,37,43,45
+,47,49,51,53,55,75,97,99,101,103
+,105,107,109,111,115,121,123,129,137,141
+,147,149,153,155,157,161,165,169,191,193
+,195,199,201,205,209,257,259,293,295,297
+,299,301,303,305,309,311,313,317,319,323
+,325,329,333,-1};
+
+
+yyEactr(__np__, var)
+int __np__;
+char *var;
+{
+switch(__np__) {
+default:
+return (1);
+case 177:  return (identis(var, CONST)); break;
+case 179:  return (identis(var, VAR)); break;
+case 180:  return (identis(var, ARRAY)); break;
+case 181:  return (identis(var, PTRFILE)); break;
+case 182:  return (identis(var, RECORD)); break;
+case 183:  return (identis(var, FIELD)); break;
+case 184:  return (identis(var, PROC)); break;
+case 185:  return (identis(var, FUNC)); break;
+case 135: {
+			 return (identis(var, VAR));
+}
+break;
+case 178: {
+			 return (identis(var, TYPE));
+}
+break;
+}
+}
diff --git a/usr/src/cmd/pi/y.tab.h b/usr/src/cmd/pi/y.tab.h
new file mode 100644
index 0000000000..de13a64632
--- /dev/null
+++ b/usr/src/cmd/pi/y.tab.h
@@ -0,0 +1,60 @@
+#
+# define YAND 257
+# define YARRAY 258
+# define YBEGIN 259
+# define YCASE 260
+# define YCONST 261
+# define YDIV 262
+# define YDO 263
+# define YDOTDOT 264
+# define YTO 265
+# define YELSE 266
+# define YEND 267
+# define YFILE 268
+# define YFOR 269
+# define YFORWARD 270
+# define YFUNCTION 271
+# define YGOTO 272
+# define YID 273
+# define YIF 274
+# define YIN 275
+# define YINT 276
+# define YLABEL 277
+# define YMOD 278
+# define YNOT 279
+# define YNUMB 280
+# define YOF 281
+# define YOR 282
+# define YPACKED 283
+# define YNIL 284
+# define YPROCEDURE 285
+# define YPROG 286
+# define YRECORD 287
+# define YREPEAT 288
+# define YSET 289
+# define YSTRING 290
+# define YTHEN 291
+# define YDOWNTO 292
+# define YTYPE 293
+# define YUNTIL 294
+# define YVAR 295
+# define YWHILE 296
+# define YWITH 297
+# define YBINT 298
+# define YOCT 299
+# define YHEX 300
+# define YASSERT 301
+# define YCASELAB 302
+# define YILLCH 303
+# define YLAST 304
+# define UNARYSIGN 305
+
+/*
+ * GLOBALS FOR ACTIONS
+ */
+
+/*
+ * The following line marks the end of the yacc
+ * Constant definitions which are removed from
+ * y.tab.c and placed in the file y.tab.h.
+ */
diff --git a/usr/src/cmd/pi/yy.h b/usr/src/cmd/pi/yy.h
new file mode 100644
index 0000000000..369c60d293
--- /dev/null
+++ b/usr/src/cmd/pi/yy.h
@@ -0,0 +1,296 @@
+#
+/*
+ * pi - Pascal interpreter code translator
+ *
+ * Charles Haley, Bill Joy UCB
+ * Version 1.2 November 1978
+ *
+ *
+ * pxp - Pascal execution profiler
+ *
+ * Bill Joy UCB
+ * Version 1.2 November 1978
+ */
+
+#include "y.tab.h"
+/*
+ * INPUT/OUTPUT 
+ */
+
+/*
+ * The buffer for the input file is normally "ibuf".
+ * When files are included, however, this may be
+ * pushed down in the stack of currently active
+ * files. For this reason, the pointer ibp always
+ * references the i/o buffer of the current input file.
+ */
+FILE		*ibuf, *ibp;
+
+/*
+ * Line and token buffers.  Charbuf is the character buffer for
+ * input lines, token the buffer for tokens returned
+ * by the scanner.  CBSIZE defines the maximum line
+ * length allowed on input and is doubtless too small.
+ * The token buffer should be a local array in yylex.
+ */
+#define CBSIZE 161
+
+char	charbuf[CBSIZE], *bufp, token[CBSIZE];
+
+#define digit(c)	(c >= '0' && c <= '9')
+#define alph(c)		((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
+
+/*
+ * Flag to prevent reprinting current line after
+ * an error.
+ */
+char	yyprtd;
+
+/*
+ * The following variables are maintained by
+ * the scanner in the file lex and used in scanning
+ * and in parsing.
+ *
+ * The variable yychar is the current scanner character.
+ * Currently, the scanner must be called as
+ *	yychar = yylex()
+ * even though it should set yychar itself.
+ * Yychar has value YEOF at end of file, and negative value if
+ * there is no yychar, e.g. after a shift in the parser.
+ *
+ * The variable yycol is the current column in the line whose number
+ * is given by yyline.  Yyecol and yyeline give the position for an
+ * error message to flag, usually the start of an input token.
+ * Yylval is the semantic return from the scanner.
+ *
+ * In fact all of these variables are "per token".
+ * In the usual case, only the copies in the scanner token structure
+ * 'Y' are used, and the #defines below serve to make them look
+ * like variables.
+ *
+ * For the purposes of the error recovery, however, they are copied
+ * and restored quite freely.  For the error recovery also, the
+ * file name which the input line this token is on and the seek
+ * pointer of this line in its source file are saved as yyefile
+ * and yyseekp.  The global variable yylinpt is the seek pointer
+ * of the current input line.
+ */
+int	yycol;
+int	yyline;
+int	yyseqid;
+int	yysavc;
+int	yylinpt;
+
+/* *** NOTE ***
+ * It would be much better to not have the Yyeline and Yyefile
+ * in the scanner structure and to have a mechanism for mapping
+ * seqid's to these globally.
+ */
+struct yytok {
+	int	Yychar;
+	int	Yylval;
+	int	Yyecol;
+	int	Yyeline;
+	int	Yyseekp;
+	char	*Yyefile;
+	int	Yyeseqid;
+} Y, OY;
+
+#define	yychar	Y.Yychar
+#define	yylval	Y.Yylval
+#define	yyecol	Y.Yyecol
+#define	yyeline	Y.Yyeline
+#define	yyseekp	Y.Yyseekp
+#define	yyefile	Y.Yyefile
+#define	yyeseqid Y.Yyeseqid
+
+/*
+ * Yyval is the semantic value returned by a reduction.
+ * It is what "$$" is expanded to by yacc.
+ */
+int	*Ps, *yyval;
+
+/*
+ * N is the length of a reduction.
+ * Used externally by "lineof" to get the left and
+ * right margins for a reduction.
+ */
+int	N;
+/*
+ * Definitions for looking up keywords.
+ * The keyword array is called yykey, and
+ * lastkey points at the end of it.
+ */
+char	*lastkey;
+
+struct kwtab {
+	char	*kw_str;
+	int	kw_val;
+} yykey[];
+
+/*
+ * ERROR RECOVERY EXTERNALS
+ */
+
+#define	CLIMIT	40	/* see yyrecover.c */
+char	*tokname();
+char	*charname();
+
+char	*classes[];
+
+/*
+ * Tokens which yacc doesn't define
+ */
+#define	YEOF	0
+#define	ERROR	256
+
+/*
+ * Limit on the number of syntax errors
+ */
+#define	MAXSYNERR	100
+
+/*
+ * Big costs
+ */
+#define	HUGE		50
+#define	INFINITY	100
+
+/*
+ * Kinds of panics
+ */
+#define	PDECL	0
+#define	PSTAT	1
+#define	PEXPR	2
+#define	PPROG	3
+
+#define	yyresume()	yyResume = 1;
+
+char	yyResume;
+
+char	dquote;
+
+char	errout;
+
+/*
+ * Yyidwant and yyidhave are the namelist classes
+ * of identifiers associated with a identifier reduce
+ * error, set before the recovery is called.
+ * Since they may be set again during the forward move
+ * they must be saved by yyrecover, which uses them in printing
+ * error messages.
+ */
+int	yyidhave, yyidwant;
+
+/*
+ * The variables yy*shifts are used to prevent looping and the printing
+ * of spurious messages in the parser.  Yyshifts gives the number of
+ * true input shifts since the last corrective action.  YyOshifts
+ * is the value of yyshifts before it was last cleared, and is used
+ * by yyPerror in yypanic.c to suppress messages.
+ *
+ * Yytshifts counts true input shifts.  It is used to prevent looping
+ * inserting unique symbols.  If yytshifts == yyTshifts (local to
+ * yyrecover.c) then there has been no shift over true input since
+ * the last unique symbol insertion.  We refuse, in this case,
+ * to insert more unique symbols so as to prevent looping.
+ *
+ * The recovery cannot loop because it guarantees the progress of the
+ * parse, i.e.:
+ *
+ *	1) Any insertion guarantees to shift over 2 symbols, a replacement
+ *	   over one symbol.
+ *
+ *	2) Unique symbol insertions are limited to one for each true
+ *	   symbol of input, or "safe" insertion of the keywords "end"
+ *	   and "until" at zero cost (safe since these are know to match
+ *	   stack that cannot have been generated - e.g. "begin" or "repeat")
+ *
+ *	3) We never panic more than once from a given state without
+ *	   shifting over input, i.e. we force the parse stack to shrink
+ *	   after each unsuccessful panic.
+ */
+int	yyshifts, yyOshifts;
+unsigned yytshifts;
+
+#ifdef PXP
+
+/*
+ * Identifier class definitions
+ */
+#define	UNDEF	0
+#define	CONST	1
+#define	TYPE	2
+#define	VAR	3
+#define	ARRAY	4
+#define	PTRFILE	5
+#define	RECORD	6
+#define	FIELD	7
+#define	PROC	8
+#define	FUNC	9
+#define	FVAR	10
+#define	REF	11
+#define	PTR	12
+#define	FILET	13
+#define	SET	14
+#define	RANGE	15
+#define	LABEL	16
+#define	WITHPTR 17
+#define	SCAL	18
+#define	STR	19
+#define	PROG	20
+#define	IMPROPER 21
+
+/*
+ * COMMENT FORMATTING DEFINITIONS
+ */
+
+/*
+ * Count of tokens on this input line
+ * Note that this can be off if input is not syntactically correct.
+ */
+int	yytokcnt;
+int	yywhcnt;
+
+/*
+ * Types of comments
+ */
+#define	CLMARG	0
+#define	CALIGN	1
+#define	CTRAIL	2
+#define	CRMARG	3
+#define	CSRMARG	4
+#define	CNL	5
+#define	CNLBL	6
+#define	CFORM	7
+#define	CINCLUD	8
+
+/*
+ * Comment structure
+ * Cmhp is the head of the current list of comments
+ */
+struct comment {
+	struct	comment *cmnext;
+	int	cmdelim;
+	struct	commline *cml;
+	int	cmjust;
+	int	cmseqid;
+} *cmhp;
+
+/*
+ * Structure for holding a comment line
+ */
+struct commline {
+	char	*cmtext;
+	int	cmcol;	/* Only used for first line of comment currently */
+	struct	commline *cml;
+};
+
+struct W {
+	int	Wseqid;
+	int	Wcol;
+} yyw[MAXDEPTH + 1], *yypw;
+
+#define	commform()	quickcomm(CFORM)
+#define	commnl()	quickcomm(CNL)
+#define	commnlbl()	quickcomm(CNLBL)
+#endif
diff --git a/usr/src/cmd/pi/yycopy.c b/usr/src/cmd/pi/yycopy.c
new file mode 100644
index 0000000000..bf569f296a
--- /dev/null
+++ b/usr/src/cmd/pi/yycopy.c
@@ -0,0 +1,19 @@
+/* Copyright (c) 1979 Regents of the University of California */
+#include	"0.h"
+#include	"yy.h"
+
+OYcopy ()
+    {
+	register int	*r0 = & OY;
+	register int	*r1 = & Y;
+	register int	r2 = ( sizeof ( struct yytok ) ) / ( sizeof ( int ) );
+
+	do
+	    {
+		* r0 ++ = * r1 ++ ;
+	    }
+	    while ( -- r2 > 0 );
+    }
+
+
+
diff --git a/usr/src/cmd/pi/yycosts.c b/usr/src/cmd/pi/yycosts.c
new file mode 100644
index 0000000000..c3e3779c85
--- /dev/null
+++ b/usr/src/cmd/pi/yycosts.c
@@ -0,0 +1,243 @@
+/* Copyright (c) 1979 Regents of the University of California */
+#
+/*
+ * pi - Pascal interpreter code translator
+ *
+ * Charles Haley, Bill Joy UCB
+ * Version 1.1 February 1978
+ *
+ *
+ * pxp - Pascal execution profiler
+ *
+ * Bill Joy UCB
+ * Version 1.1 February 1978
+ */
+
+#include "whoami"
+#include "0.h"
+#include "yy.h"
+
+/*
+ * Symbol costs for Pascal.
+ *
+ * Cost strategy of August 14, 1977.
+ *
+ * The costs determined by the routines in this file are used by
+ * the recovery in choosing appropriate corrections.
+ * The cost vectors and the error productions in the grammar
+ * work together to define the corrective capacity of the grammar.
+ *
+ * The costs here largely derive from those given in Steve Rhode's
+ * thesis for the Pascal-I error correcting parser which he implemented.
+ * Some minor changes have been made to adjust for the fact that
+ * the current error recovery is not as "smart", both because of the
+ * limited forward move and because of the lack of any type information
+ * about identifiers.
+ *
+ * These adjustments largely take the form of increased costs for certain
+ * tokens, noticeably keywords which are major brackets such as "begin"
+ * "label", "procedure", etc.
+ *
+ * The overall weighting strategy is still similar to Rhodes' strategy.
+ * The costs can be considered:
+ *
+ *	LOW	<= 3
+ *	MEDIUM	4 or 5
+ *	HIGH	>= 6
+ */
+ 
+/*
+ * Insertion costs
+ *
+ * In addition to the normal symbol insertion costs,
+ * there are zero cost insertions here.
+ * The current error recovery system treats symbols
+ * which have zero insertion cost in a special way,
+ * inserting them but suppressing diagnostics.
+ * This allows the system to hold of on bracketing
+ * error diagnostics about missing end's until the
+ * reduction occurs which knows the line number of the
+ * corresponding "begin", "repeat", etc.
+ * A more intelligent and useful diagnostic can then
+ * be printed.
+ *
+ * Although this routine never allows the insertion
+ * of the keyword begin, it can be inserted after a
+ * procedure or function body starts, if it was omitted
+ * by a special case in the panic routine, which notices
+ * the keywords in the statement body of the procedure
+ * and inserts the begin to recover.
+ *
+ * Similarly, we do not insert end-of-file, but
+ * the fact that end-of-file is the unique input
+ * is noticed by the recovery routines as a special
+ * case and handled there.
+ */
+inscost(sy, before)
+	register int sy, before;
+{
+
+	switch (before) {
+		case YEND:
+			if (sy == YEND)
+				break;
+		case YPROCEDURE:
+		case YFUNCTION:
+			if (sy == YUNTIL || sy == YEND)
+				return (0);
+	}
+	switch (sy) {
+		case ';':
+			return (1);
+		case ',':
+		case ':':
+		case YOF:
+		case YDO:
+			return (2);
+		case YARRAY:
+		case '+':
+		case '*':
+			return (3);
+		default:
+			return (4);
+		case '^':
+		case YNOT:
+		case YLABEL:
+		case YCONST:
+		case YTYPE:
+		case YVAR:
+		case YUNTIL:
+		case '(':
+		case '[':
+		case YWHILE:
+		case YWITH:
+		case YASSERT:
+			return (5);
+		case YPROCEDURE:
+		case YFUNCTION:
+		case YCASE:
+			return (6);
+		case YEND:
+			return (8);
+		case YBEGIN:
+		case YEOF:
+		case YREPEAT:
+		case YRECORD:
+			return (INFINITY);
+	}
+}
+
+/*
+ * Replacement costs
+ *
+ * Most replacement costs are the same as an insertion
+ * plus a deletion cost.  One special case is the replacement
+ * of a large number of keywords by an identifier.
+ * These are given lower costs, especially the keyword "to".
+ */
+repcost(what, with)
+	register int what, with;
+{
+	register int c;
+
+	if (with == what)
+		return (INFINITY);
+	if (with == YID && what > ERROR)
+		switch (what) {
+			case YID:
+			case YDOTDOT:
+			case YINT:
+			case YBINT:
+			case YSTRING:
+			case YNUMB:
+				break;
+			case YTO:
+				return (3);
+			default:
+				return (5);
+			case YRECORD:
+			case YTHEN:
+				return (6);
+			case YBEGIN:
+				break;
+		}
+	if (what == ';' && (with == ',' || with == '.'))
+		return (CLIMIT - 1);
+	c = delcost(what) + inscost(with);
+	/*
+	 * It costs extra to replace something which has
+	 * semantics by something which doesn't.
+	 */
+	if (nullsem(what) == NIL && nullsem(with) != NIL)
+		c =+ 4;
+	return (c);
+}
+
+/*
+ * Deletion costs
+ */
+delcost(what)
+	int what;
+{
+
+	switch (what) {
+		case '.':
+		case ':':
+		case ',':
+		case '=':
+		case '(':
+			return (3);
+		case YELSE:
+		case YTHEN:
+			return (4);
+		default:
+			return (5);
+		case YLABEL:
+		case YCONST:
+		case YTYPE:
+		case YVAR:
+			return (10);
+		case YPROCEDURE:
+		case YFUNCTION:
+		case YBEGIN:
+		case YEND:
+			return ((CLIMIT * 3) / 4);
+		case ';':
+		case YEOF:
+			return (INFINITY);
+	}
+}
+#ifdef DEBUG
+
+/*
+ * Routine to print out costs with "-C" option.
+ */
+char	yysyms[]	";,:=*+/-|&()[]<>~^";
+
+
+yycosts()
+{
+	register int c;
+	register char *cp;
+
+	printf("Insert\tDelete\tRep(ID)\tSymbol\n");
+	for (cp = yysyms; *cp; cp++)
+		yydocost(*cp);
+	for (c = ERROR + 1; c < YLAST; c++)
+		yydocost(c);
+#ifdef PXP
+	flush();
+#endif
+}
+
+yydocost(c)
+	int c;
+{
+
+	printf("%4d\t", inscost(c, -1));
+	printf("%4d\t", delcost(c));
+	if (repcost(c, YID) != inscost(YID) + delcost(c))
+		printf("%4d", repcost(c, YID));
+	printf("\t%s%s\n", charname(c));
+}
+#endif
diff --git a/usr/src/cmd/pi/yyerror.c b/usr/src/cmd/pi/yyerror.c
new file mode 100644
index 0000000000..38678dcb55
--- /dev/null
+++ b/usr/src/cmd/pi/yyerror.c
@@ -0,0 +1,108 @@
+/* Copyright (c) 1979 Regents of the University of California */
+#
+/*
+ * pi - Pascal interpreter code translator
+ *
+ * Charles Haley, Bill Joy UCB
+ * Version 1.1 February 1978
+ *
+ *
+ * pxp - Pascal execution profiler
+ *
+ * Bill Joy UCB
+ * Version 1.1 February 1978
+ */
+
+#include "whoami"
+#include "0.h"
+#include "yy.h"
+
+/*
+ * Yerror prints an error
+ * message and then returns
+ * NIL for the tree if needed.
+ * The error is flagged on the
+ * current line which is printed
+ * if the listing is turned off.
+#ifdef PXP
+ *
+ * As is obvious from the fooling around
+ * with fout below, the Pascal system should
+ * be changed to use the new library "lS".
+#endif
+ */
+yerror(s, a1, a2, a3, a4, a5)
+	char *s;
+{
+#ifdef PI
+	char buf[256];
+#endif
+	register int i, j;
+	static yySerrs;
+#ifdef PXP
+	int ofout;
+#endif
+
+	if (errpfx == 'w' && opt('w') != 0)
+		return;
+#ifdef PXP
+	flush();
+	ofout = fout[0];
+	fout[0] = errout;
+#endif
+	yyResume = 0;
+#ifdef PI
+	geterr(s, buf);
+	s = buf;
+#endif
+	yysync();
+	pchr(errpfx);
+	pchr(' ');
+	for (i = 3; i < yyecol; i++)
+		pchr('-');
+	printf("^--- ");
+/*
+	if (yyecol > 60)
+		printf("\n\t");
+*/
+	printf(s, a1, a2, a3, a4, a5);
+	pchr('\n');
+	if (errpfx == 'E')
+#ifdef PI
+		eflg++, cgenflg++;
+#endif
+#ifdef PXP
+		eflg++;
+#endif
+	errpfx = 'E';
+	yySerrs++;
+	if (yySerrs >= MAXSYNERR) {
+		yySerrs = 0;
+		yerror("Too many syntax errors - QUIT");
+		pexit(ERRS);
+	}
+#ifdef PXP
+	flush();
+	fout[0] = ofout;
+	return (0);
+#endif
+}
+
+/*
+ * A bracketing error message
+ */
+brerror(where, what)
+	int where;
+	char *what;
+{
+
+	if (where == 0) {
+		line = yyeline;
+		setpfx(' ');
+		error("End matched %s on line %d", what, where);
+		return;
+	}
+	if (where < 0)
+		where = -where;
+	yerror("Inserted keyword end matching %s on line %d", what, where);
+}