159 lines
3 KiB
C
159 lines
3 KiB
C
/* U S E R O P T I O N - H A N D L I N G */
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#include "idfsize.h"
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#include "ndir.h"
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#include <em_arith.h>
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#include <em_label.h>
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#include "type.h"
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#include "main.h"
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#include "warning.h"
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extern int idfsize;
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static int ndirs;
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int warning_classes;
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DoOption(text)
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register char *text;
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{
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switch(*text++) {
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default:
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options[text[-1]]++; /* flags, debug options etc. */
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break;
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/* recognized flags:
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-L: don't generate fil/lin
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-p: generate procentry/procexit
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-w: no warnings
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-n: no register messages
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and many more if DEBUG
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*/
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case 'w':
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if (*text) {
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while (*text) {
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switch(*text++) {
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case 'O':
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warning_classes &= ~W_OLDFASHIONED;
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break;
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case 'R':
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warning_classes &= ~W_STRICT;
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break;
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case 'W':
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warning_classes &= ~W_ORDINARY;
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break;
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}
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}
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}
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else warning_classes = 0;
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break;
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case 'W':
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while (*text) {
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switch(*text++) {
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case 'O':
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warning_classes |= W_OLDFASHIONED;
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break;
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case 'R':
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warning_classes |= W_STRICT;
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break;
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case 'W':
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warning_classes |= W_ORDINARY;
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break;
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}
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}
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break;
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case 'M': { /* maximum identifier length */
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char *t = text; /* because &text is illegal */
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idfsize = txt2int(&t);
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if (*t || idfsize <= 0)
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fatal("malformed -M option");
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if (idfsize > IDFSIZE)
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fatal("maximum identifier length is %d", IDFSIZE);
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}
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break;
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case 'I' :
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if (++ndirs >= NDIRS) {
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fatal("too many -I options");
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}
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DEFPATH[ndirs] = text;
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break;
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case 'V' : /* set object sizes and alignment requirements */
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{
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arith size;
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int align;
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char c;
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char *t;
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while (c = *text++) {
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t = text;
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size = txt2int(&t);
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align = 0;
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if (*(text = t) == '.') {
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t = text + 1;
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align = txt2int(&t);
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text = t;
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}
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switch (c) {
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case 'w': /* word */
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if (size != (arith)0) {
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word_size = size;
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dword_size = 2 * size;
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}
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if (align != 0) word_align = align;
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break;
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case 'i': /* int */
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if (size != (arith)0) int_size = size;
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if (align != 0) int_align = align;
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break;
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case 'l': /* longint */
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if (size != (arith)0) long_size = size;
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if (align != 0) long_align = align;
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break;
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case 'f': /* real */
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if (size != (arith)0) float_size = size;
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if (align != 0) float_align = align;
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break;
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case 'd': /* longreal */
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if (size != (arith)0) double_size = size;
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if (align != 0) double_align = align;
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break;
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case 'p': /* pointer */
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if (size != (arith)0) pointer_size = size;
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if (align != 0) pointer_align = align;
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break;
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case 'S': /* initial record alignment */
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if (align != (arith)0) struct_align = align;
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break;
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default:
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error("-V: bad type indicator %c\n", c);
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}
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}
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break;
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}
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}
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}
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int
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txt2int(tp)
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register char **tp;
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{
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/* the integer pointed to by *tp is read, while increasing
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*tp; the resulting value is yielded.
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*/
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register int val = 0;
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register int ch;
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while (ch = **tp, ch >= '0' && ch <= '9') {
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val = val * 10 + ch - '0';
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(*tp)++;
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}
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return val;
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}
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