projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| b78d4950 PK |
1 | static char *sccsid = "@(#)yymain.c 1.1 (Berkeley) %G%"; |
| 2 | /* Copyright (c) 1979 Regents of the University of California */ | |
| 3 | # | |
| 4 | /* | |
| 5 | * pi - Pascal interpreter code translator | |
| 6 | * | |
| 7 | * Charles Haley, Bill Joy UCB | |
| 8 | * Version 1.2 November 1978 | |
| 9 | * | |
| 10 | * | |
| 11 | * pxp - Pascal execution profiler | |
| 12 | * | |
| 13 | * Bill Joy UCB | |
| 14 | * Version 1.2 November 1978 | |
| 15 | */ | |
| 16 | ||
| 17 | #include "0.h" | |
| 18 | #include "yy.h" | |
| 19 | ||
| 20 | int line = 1; | |
| 21 | ||
| 22 | /* | |
| 23 | * Yymain initializes each of the utility | |
| 24 | * clusters and then starts the processing | |
| 25 | * by calling yyparse. | |
| 26 | */ | |
| 27 | yymain() | |
| 28 | { | |
| 29 | ||
| 30 | /* | |
| 31 | * Initialize the scanner | |
| 32 | */ | |
| 33 | #ifdef PXP | |
| 34 | if (bracket == 0) { | |
| 35 | #endif | |
| 36 | if (getline() == -1) { | |
| 37 | Perror(filename, "No lines in file"); | |
| 38 | pexit(NOSTART); | |
| 39 | } | |
| 40 | #ifdef PXP | |
| 41 | } else | |
| 42 | yyline = 0; | |
| 43 | #endif | |
| 44 | ||
| 45 | #ifdef PI | |
| 46 | magic(); | |
| 47 | ||
| 48 | #endif | |
| 49 | /* | |
| 50 | * Initialize the clusters | |
| 51 | * | |
| 52 | initstring(); | |
| 53 | */ | |
| 54 | inithash(); | |
| 55 | inittree(); | |
| 56 | #ifdef PI | |
| 57 | initnl(); | |
| 58 | #endif | |
| 59 | ||
| 60 | /* | |
| 61 | * Process the input | |
| 62 | */ | |
| 63 | yyparse(); | |
| 64 | #ifdef PI | |
| 65 | magic2(); | |
| 66 | #ifdef DEBUG | |
| 67 | dumpnl(0); | |
| 68 | #endif | |
| 69 | #endif | |
| 70 | #ifdef PXP | |
| 71 | prttab(); | |
| 72 | if (onefile) { | |
| 73 | extern int outcol; | |
| 74 | ||
| 75 | if (outcol) | |
| 76 | putchar('\n'); | |
| 77 | flush(); | |
| 78 | if (eflg) { | |
| 79 | writef(2, "File not rewritten because of errors\n"); | |
| 80 | pexit(ERRS); | |
| 81 | } | |
| 82 | signal(1, 1); | |
| 83 | signal(2, 1); | |
| 84 | copyfile(); | |
| 85 | } | |
| 86 | #endif | |
| 87 | pexit(eflg ? ERRS : AOK); | |
| 88 | } | |
| 89 | ||
| 90 | #ifdef PXP | |
| 91 | copyfile() | |
| 92 | { | |
| 93 | register int c; | |
| 94 | char buf[BUFSIZ]; | |
| 95 | ||
| 96 | if (freopen(stdoutn, "r", stdin) == NULL) { | |
| 97 | perror(stdoutn); | |
| 98 | pexit(ERRS); | |
| 99 | } | |
| 100 | if (freopen(firstname, "w", stdout) == NULL) { | |
| 101 | perror(firstname); | |
| 102 | pexit(ERRS); | |
| 103 | } | |
| 104 | while ((c = getchar()) > 0) | |
| 105 | putchar(c); | |
| 106 | if (ferror(stdout)) | |
| 107 | perror(stdout); | |
| 108 | } | |
| 109 | #endif | |
| 110 | ||
| 111 | static | |
| 112 | struct { | |
| 113 | int magic; | |
| 114 | unsigned txt_size; | |
| 115 | unsigned data_size; | |
| 116 | unsigned bss_size; | |
| 117 | unsigned syms_size; | |
| 118 | unsigned entry_point; | |
| 119 | unsigned tr_size; | |
| 120 | unsigned dr_size; | |
| 121 | } header; | |
| 122 | ||
| 123 | #ifdef PI | |
| 124 | magic() | |
| 125 | { | |
| 126 | ||
| 127 | /* | |
| 128 | * this is the size of /usr/lib/npxheader | |
| 129 | */ | |
| 130 | #define HEAD_BYTES 1024 | |
| 131 | short buf[HEAD_BYTES / sizeof ( short )]; | |
| 132 | unsigned *ubuf = buf; | |
| 133 | register int hf, i; | |
| 134 | ||
| 135 | hf = open("/usr/lib/npx_header", 0); | |
| 136 | if (hf >= 0 && read(hf, buf, HEAD_BYTES) > sizeof header) { | |
| 137 | header.magic = ubuf[0]; | |
| 138 | header.txt_size = ubuf[1]; | |
| 139 | header.data_size = ubuf[2]; | |
| 140 | header.bss_size = ubuf[3]; | |
| 141 | header.syms_size = ubuf[4]; | |
| 142 | header.entry_point = ubuf[5]; | |
| 143 | header.tr_size = ubuf[6]; | |
| 144 | header.dr_size = ubuf[7]; | |
| 145 | for (i = 0; i < HEAD_BYTES / sizeof ( short ); i++) | |
| 146 | word(buf[i]); | |
| 147 | } | |
| 148 | close(hf); | |
| 149 | word(0404); | |
| 150 | } | |
| 151 | ||
| 152 | magic2() | |
| 153 | { | |
| 154 | short i; | |
| 155 | ||
| 156 | if (header.magic != 0407) | |
| 157 | panic ( "magic2" ); | |
| 158 | pflush(); | |
| 159 | lseek(ofil, 0l, 0); | |
| 160 | header.data_size = ( unsigned ) lc - header.txt_size; | |
| 161 | header.data_size =- sizeof header; | |
| 162 | write(ofil, &header, sizeof header); | |
| 163 | lseek(ofil, ( long ) ( HEAD_BYTES - sizeof ( short ) ) , 0); | |
| 164 | i = ( ( unsigned ) lc) - HEAD_BYTES; | |
| 165 | write(ofil, &i, 2); | |
| 166 | } | |
| 167 | #endif | |
| 168 | ||
| 169 | #ifdef PXP | |
| 170 | writef(i, cp) | |
| 171 | { | |
| 172 | ||
| 173 | write(i, cp, strlen(cp)); | |
| 174 | } | |
| 175 | #endif |