+#include <stdio.h>
+#include "as.yh"
+#define NCPS 24
+#define LIBNAME " .LIBRARY /DB0:[C]JEQL.MLB/\n"
+#define TRUE 1
+#define FALSE 0
+#define clearl() (*strpnt=0,fputs(strbuf,stdout),strpnt=strbuf)
+FILE *tmpfil;
+FILE *relfil;
+FILE *txtfil;
+char yytext[NCPS+2];
+char sname[8];
+char strbuf[512];
+char *strpnt = strbuf;
+int pending;
+int index;
+int lineno;
+int curval;
+int skipspace;
+int coffset;
+int yylval;
+long intval;
+int anyerrs;
+int sawname;
+int saveit;
+/*define yylex() (fprintf(stderr,"yylex returns %d\n",saveit=oyylex()),saveit)*/
+#define yylex() oyylex()
+
+main(argc,argv)
+register char **argv;
+{
+ int nameflag = 0;char namebuf[16]; register int i;
+ if(--argc>0) {
+ freopen(*++argv,"r",stdin);
+ nameflag = 1;
+ }
+ if(--argc>0)
+ freopen(argv[1],"w",stdout);
+ if(nameflag) {
+ register char *base = *argv;
+
+ while(*base++); /* Find end */
+ while(--base>=*argv && *base!='/'); /* find last slash */
+ base++; /* set base */
+ for(i = 0; i < 16 && base[i] && base[i]!='.';)
+ namebuf[i++]=((base[i] >= 'a' && base[i] <= 'z')
+ ? (base[i] + 'A' -'a') : base[i]);
+ namebuf[i] = 0;
+ printf("\t.TITLE\t%s\n",namebuf);
+ printf(LIBNAME);
+ }
+
+
+loop:
+ for(;;) {
+ i = yylex();
+ again:
+ switch(i) {
+
+ case NL:
+ clearl();
+ break;
+
+ case NAME:
+ sawname = 1;
+ break;
+
+ case CM: case SP:
+ sawname = 0;
+
+ case LP:
+ fixlength();
+ break;
+
+ case 0:
+ goto done;
+
+ }
+ }
+done: printf(" .END\n");
+}
+
+fixlength(){
+ register char *cp = strpnt;
+ if(sawname==0) return;
+ while(*--cp != ' ' && *cp != '\t' && *cp != ',' && *cp!='@') {
+ cp[2] = *cp;
+ if(cp <= strbuf) yyerror("Bad ( construction");
+ }
+ cp++;
+ *cp++ = 'L';
+ *cp++ = '^';
+ strpnt += 2;
+}
+
+static long mask[] = {
+0xffffffff, 0xfffffffe, 0xfffffffc, 0xfffffff8,
+0xfffffff0, 0xffffffe0, 0xffffffc0, 0xffffff80,
+0xffffff00, 0xfffffe00, 0xfffffc00, 0xfffff800,
+0xfffff000, 0xffffe000, 0xffffc000, 0xffff8000,
+0xffff0000, 0xfffe0000, 0xfffc0000, 0xfff80000,
+0xfff00000, 0xffe00000, 0xffc00000, 0xff800000,
+0xff000000, 0xfe000000, 0xfc000000, 0xf8000000,
+0xf0000000, 0xe0000000, 0xc0000000, 0x80000000,
+};
+
+short type[] = {
+ EOF,
+ SP, 0, 0, 0, 0, 0, 0, 0,
+ 0, SP, NL, 0, 0, SP, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ SP, 0, 0, SH, LITOP, REG, AND, SQ,
+ LP, RP, MUL, PLUS, CM, MINUS, ALPH, DIV,
+ DIG, DIG, DIG, DIG, DIG, DIG, DIG, DIG,
+ DIG, DIG, COLON, SEMI, LSH, 0, RSH, 0,
+ 0, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH,
+ ALPH, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH,
+ ALPH, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH,
+ ALPH, ALPH, ALPH, LB, 0, RB, XOR, ALPH,
+ 0, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH,
+ ALPH, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH,
+ ALPH, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH, ALPH,
+ ALPH, ALPH, ALPH, 0, IOR, 0, TILDE, 0,
+};
+
+oyylex()
+{
+ register val;
+ register base;
+ register char *cp;
+ struct symtab *op;
+ static double fltval;
+ char fltchr[64];
+ int minflag = FALSE;
+
+loop:
+ switch(yylval = (type+1)[val = getchar()]) {
+
+ case SH:
+ copy(';');
+ while ((val = getchar()) != '\n' && val>0)
+ copy(val);
+ copy(val);
+ val = NL;
+ goto ret;
+
+
+ case EOF:
+ val = 0;
+ goto ret;
+
+ case ALPH:
+ cp = yytext;
+ if(val=='_') val = getchar();
+ do {
+ if (cp <= &yytext[NCPS])
+ *cp++ = val;
+ copy(val);
+ } while ((type+1)[val=getchar()]==ALPH || (type+1)[val]==DIG
+ || (type+1)[val]==LITOP);
+ *cp = '\0';
+ if(skipspace)
+ for(;(type+1)[val]==SP; val = getchar())
+ copy(val);
+ ungetc(val, stdin);
+ if(*yytext!='.')
+ return(val=NAME);
+ else if(strcmp(yytext,".byte")==0)
+ return(IBYTE);
+ else if(strcmp(yytext,".word")==0)
+ return(IWORD);
+ else if(strcmp(yytext,".long")==0)
+ return(ILONG);
+ else
+ return(NAME);
+
+ case MINUS:
+ copy(val);
+ switch ((type+1)[val = getchar()]) {
+ case LP:
+ copy(val);
+ return(val = MP);
+ case DIG:
+ break;
+ default:
+ ungetc(val,stdin);
+ return(val = MINUS);
+ }
+ minflag = TRUE;
+ case DIG:
+ intval = val-'0';
+ if (val=='0') {
+ val = getchar();
+ if (val=='x' || val=='X') {
+ base = 16;
+ copy('^');
+ copy('X');
+ } else if (val=='d' || val=='D' || val=='f' || val=='F') {
+ char *p = fltchr;
+ double atof();
+ while (p < &fltchr[63] && ((val=getchar())=='.'
+ || val=='e' || val=='d' || val=='E' || val=='D'
+ || val=='-' || val=='+' || (type+1)[val]==DIG))
+ copy(val),*p++ = val;
+ ungetc(val, stdin);
+ *p++ = '\0';
+ fltval = atof(fltchr);
+ val = FLTNUM;
+ goto ret;
+ } else {
+ ungetc(val, stdin);
+ base = 8;
+ if((type+1)[val]!=DIG) {
+ copy('0');
+ val = INT;
+ yylval = 0;
+ goto ret;
+ }
+ copy('^');
+ copy('O');
+ }
+ } else
+ copy(val),base = 10;
+ while ((type+1)[val=getchar()]==DIG
+ || (base==16 && (val>='a' && val<='f'||val>='A' && val<='F'))) {
+ copy(val);
+ if (base==8)
+ intval <<= 3;
+ else if (base==10)
+ intval *= 10;
+ else
+ intval <<= 4;
+ if (val>='a' && val<='f')
+ val -= 'a' - 10 - '0';
+ else if (val>='A' && val<='F')
+ val -= 'A' - 10 - '0';
+ intval += val-'0';
+ }
+ ungetc(val, stdin);
+ val = INT;
+ if(minflag) intval = -intval;
+ goto ret;
+
+
+ case MUL:
+ copy('@');
+ goto ret;
+
+ case LITOP:
+ copy('#');
+ goto ret;
+
+ case SQ:
+ if ((yylval = getchar()) == '\n')
+ lineno++;
+ intval = yylval;
+ sprintf(strpnt,"%d",intval);
+ for(;(strpnt<&strbuf[512])&& *strpnt; strpnt++);
+ val = INT;
+ goto ret;
+
+ case 0:
+ yyerror("Illegal character");
+ val = NOCHAR;
+ goto ret;
+
+ case SP:
+ if(skipspace) {
+ copy(val);
+ goto loop;
+ }
+
+ default:
+ copy(val);
+ val = yylval;
+ goto ret;
+ }
+ret:
+ return(val);
+}
+
+yyerror(s, a)
+char *s;
+{
+ if (anyerrs==0)
+ fprintf(stderr, "Assembler:\n");
+ anyerrs++;
+ fprintf(stderr, "line %d: ", lineno);
+ fprintf(stderr, s, a);
+ fprintf(stderr, "\n");
+}
+
+copy(p)
+register p;
+{
+ if(p>='a'&&p<='z')
+ p += 'A' - 'a';
+ if(strpnt<strbuf+512)
+ *strpnt++=(p);
+ return(p);
+}
projects / unix-history / commitdiff