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1 | /*- |
2 | * Copyright (c) 1980 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * %sccs.include.redist.c% | |
252367af DF |
6 | */ |
7 | ||
8 | #ifndef lint | |
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9 | static char sccsid[] = "@(#)yymain.c 5.4 (Berkeley) %G%"; |
10 | #endif /* not lint */ | |
252367af | 11 | |
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12 | /* |
13 | * pi - Pascal interpreter code translator | |
14 | * | |
15 | * Charles Haley, Bill Joy UCB | |
16 | * Version 1.2 November 1978 | |
17 | * | |
18 | * | |
19 | * pxp - Pascal execution profiler | |
20 | * | |
21 | * Bill Joy UCB | |
22 | * Version 1.2 November 1978 | |
23 | */ | |
24 | ||
84ef74c0 | 25 | #include "whoami.h" |
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26 | #include "0.h" |
27 | #include "yy.h" | |
28 | ||
29 | int line = 1; | |
30 | ||
31 | /* | |
32 | * Yymain initializes each of the utility | |
33 | * clusters and then starts the processing | |
34 | * by calling yyparse. | |
35 | */ | |
36 | yymain() | |
37 | { | |
38 | ||
39 | /* | |
40 | * Initialize the scanner | |
41 | */ | |
42 | #ifdef PXP | |
43 | if (bracket == 0) { | |
44 | #endif | |
45 | if (getline() == -1) { | |
46 | Perror(filename, "No lines in file"); | |
47 | pexit(NOSTART); | |
48 | } | |
49 | #ifdef PXP | |
50 | } else | |
51 | yyline = 0; | |
52 | #endif | |
53 | ||
54 | #ifdef PI | |
55 | magic(); | |
56 | ||
57 | #endif | |
58 | /* | |
59 | * Initialize the clusters | |
60 | * | |
61 | initstring(); | |
62 | */ | |
63 | inithash(); | |
64 | inittree(); | |
65 | #ifdef PI | |
66 | initnl(); | |
67 | #endif | |
68 | ||
69 | /* | |
70 | * Process the input | |
71 | */ | |
72 | yyparse(); | |
73 | #ifdef PI | |
74 | magic2(); | |
75 | #ifdef DEBUG | |
76 | dumpnl(0); | |
77 | #endif | |
78 | #endif | |
79 | #ifdef PXP | |
80 | prttab(); | |
81 | if (onefile) { | |
82 | extern int outcol; | |
83 | ||
84 | if (outcol) | |
85 | putchar('\n'); | |
86 | flush(); | |
87 | if (eflg) { | |
88 | writef(2, "File not rewritten because of errors\n"); | |
89 | pexit(ERRS); | |
90 | } | |
91 | signal(1, 1); | |
92 | signal(2, 1); | |
93 | copyfile(); | |
94 | } | |
95 | #endif | |
96 | pexit(eflg ? ERRS : AOK); | |
97 | } | |
98 | ||
99 | #ifdef PXP | |
100 | copyfile() | |
101 | { | |
102 | register int c; | |
103 | char buf[BUFSIZ]; | |
104 | ||
105 | if (freopen(stdoutn, "r", stdin) == NULL) { | |
106 | perror(stdoutn); | |
107 | pexit(ERRS); | |
108 | } | |
109 | if (freopen(firstname, "w", stdout) == NULL) { | |
110 | perror(firstname); | |
111 | pexit(ERRS); | |
112 | } | |
113 | while ((c = getchar()) > 0) | |
114 | putchar(c); | |
115 | if (ferror(stdout)) | |
116 | perror(stdout); | |
117 | } | |
118 | #endif | |
119 | ||
120 | static | |
121 | struct { | |
122 | int magic; | |
123 | unsigned txt_size; | |
124 | unsigned data_size; | |
125 | unsigned bss_size; | |
126 | unsigned syms_size; | |
127 | unsigned entry_point; | |
128 | unsigned tr_size; | |
129 | unsigned dr_size; | |
130 | } header; | |
131 | ||
132 | #ifdef PI | |
133 | magic() | |
134 | { | |
135 | ||
136 | /* | |
137 | * this is the size of /usr/lib/npxheader | |
138 | */ | |
139 | #define HEAD_BYTES 1024 | |
140 | short buf[HEAD_BYTES / sizeof ( short )]; | |
141 | unsigned *ubuf = buf; | |
142 | register int hf, i; | |
143 | ||
144 | hf = open("/usr/lib/npx_header", 0); | |
145 | if (hf >= 0 && read(hf, buf, HEAD_BYTES) > sizeof header) { | |
146 | header.magic = ubuf[0]; | |
147 | header.txt_size = ubuf[1]; | |
148 | header.data_size = ubuf[2]; | |
149 | header.bss_size = ubuf[3]; | |
150 | header.syms_size = ubuf[4]; | |
151 | header.entry_point = ubuf[5]; | |
152 | header.tr_size = ubuf[6]; | |
153 | header.dr_size = ubuf[7]; | |
154 | for (i = 0; i < HEAD_BYTES / sizeof ( short ); i++) | |
155 | word(buf[i]); | |
156 | } | |
157 | close(hf); | |
158 | word(0404); | |
159 | } | |
160 | ||
161 | magic2() | |
162 | { | |
163 | short i; | |
164 | ||
165 | if (header.magic != 0407) | |
166 | panic ( "magic2" ); | |
167 | pflush(); | |
168 | lseek(ofil, 0l, 0); | |
169 | header.data_size = ( unsigned ) lc - header.txt_size; | |
7169b77a | 170 | header.data_size -= sizeof header; |
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171 | write(ofil, &header, sizeof header); |
172 | lseek(ofil, ( long ) ( HEAD_BYTES - sizeof ( short ) ) , 0); | |
173 | i = ( ( unsigned ) lc) - HEAD_BYTES; | |
174 | write(ofil, &i, 2); | |
175 | } | |
176 | #endif | |
177 | ||
178 | #ifdef PXP | |
179 | writef(i, cp) | |
180 | { | |
181 | ||
182 | write(i, cp, strlen(cp)); | |
183 | } | |
184 | #endif |