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[/] [System09/] [rev_86/] [Tools/] [as09/] [util.c] - Rev 215
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/* * fatal --- fatal error handler */ fatal(str) char *str; { printf("%s\n",str); #ifdef IBM /* changed ver TER_2.0 */ exit(-1); #else exit(10); /* Amiga & UNIX prefer positive numbers for error minimal error is 10 (no system prob) */ #endif } /* * error --- error in a line * print line number and error */ error(str) char *str; { /* if(N_files > 1) commented out test for N_files in rel TER_2.0 because a single command line source file (which is what N_files counts) can have multiple include source files. */ printf("%s\n",str); } /* * warn --- trivial error in a line * print line number and error */ warn(str) char *str; { /* if(N_files > 1) commented out in rel TER_2.0 same reason as above */ printf("%s, line no.",Argv[Cfn]); /* current file name */ printf("%d: ",Line_num); /* current line number */ printf("Warning --- %s\n",str); Page_lines++; } /* * delim --- check if character is a delimiter */ delim(c) char c; { if( any(c," \t\n")) return(YES); return(NO); } /* * skip_white --- move pointer to next non-whitespace char */ char *skip_white(ptr) char *ptr; { while(*ptr==BLANK || *ptr==TAB) ptr++; return(ptr); } /* * eword --- emit a word to code file */ eword(wd) int wd; { emit(hibyte(wd)); emit(lobyte(wd)); } /* * emit --- emit a byte to code file */ emit(byte) { #ifdef DEBUG printf("%2x @ %4x\n",byte,Pc); #endif if(Pass==1){ Pc++; return(YES); } if(P_total < P_LIMIT) P_bytes[P_total++] = byte; E_bytes[E_total++] = byte; Pc++; if(E_total == E_LIMIT) f_record(); } /* * f_record --- flush record out in `S1' format */ void f_record() /* made void for ANSI C compat ver TER_2.0 6/18/89 */ { int i; int chksum; if(Pass == 1) return; if(E_total==0){ E_pc = Pc; return; } F_total += E_total; /* total bytes in file ver (TER)2.01 19 Jun 89 */ chksum = E_total+3; /* total bytes in this record */ chksum += lobyte(E_pc); chksum += E_pc>>8; fprintf(Objfil,"S1"); /* record header preamble */ hexout(E_total+3); /* byte count +3 */ hexout(E_pc>>8); /* high byte of PC */ hexout(lobyte(E_pc)); /* low byte of PC */ for(i=0;i<E_total;i++){ chksum += lobyte(E_bytes[i]); hexout(lobyte(E_bytes[i])); /* data byte */ } chksum =~ chksum; /* one's complement */ hexout(lobyte(chksum)); /* checksum */ if (CRflag == 1) /* test for CRflag added ver TER_1.1 */ fprintf(Objfil,"%c\n",CR); /* print in IBM format for some PROM boxes */ else fprintf(Objfil,"\n"); /* this is original statement */ E_pc = Pc; E_total = 0; } char *hexstr = { "0123456789ABCDEF" } ; hexout(byte) int byte; { byte = lobyte(byte); fprintf(Objfil,"%c%c",hexstr[byte>>4],hexstr[byte&017]); } /* * print_line --- pretty print input line */ print_line() { int i; register char *ptr; printf ("%04d ",Line_num); if(P_total || P_force) printf("%04X",Old_pc); else printf(" "); for(i=0;i<P_total && i<6;i++) printf(" %02X",lobyte(P_bytes[i])); for(;i<6;i++) printf(" "); printf(" "); if(Cflag){ if(Cycles) printf("[%2d ] ",Cycles); else printf(" "); } ptr = Line; while( *ptr != '\n' ) /* just echo the line back out */ putchar(*ptr++); for(;i<P_total;i++){ if( i%6 == 0 ) printf("\n "); /* force data alignment DWC 1-5-92 */ printf(" %02X",lobyte(P_bytes[i])); } if (Pflag50 && (++Page_lines>=50)) /* form feed if flag set */ NewPage(); /* ver (TER) 2.02 19 Jun 89 */ if (Pflag75 && (++Page_lines>=75)) /* form feed if flag set */ NewPage(); /* ver (DWC) 2.10 8 Oct 2001 */ printf("\n"); } /* * any --- does str contain c? */ any(c,str) char c; char *str; { while(*str != EOS) if(*str++ == c) return(YES); return(NO); } /* * mapdn --- convert A-Z to a-z */ char mapdn(c) char c; { if( c >= 'A' && c <= 'Z') return((char)(c+040)); /* cast value to char for ANSI C, ver TER_2.0 */ return(c); } /* * lobyte --- return low byte of an int */ lobyte(i) int i; { return(i&0xFF); } /* * hibyte --- return high byte of an int */ hibyte(i) int i; { return((i>>8)&0xFF); } /* * head --- is str2 the head of str1? */ head(str1,str2) char *str1,*str2; { while( *str1 != EOS && *str2 != EOS){ if( *str1 != *str2 )break; str1++; str2++; } if(*str1 == *str2)return(YES); if(*str2==EOS) if( any(*str1," \t\n,+-];*") )return(YES); return(NO); } /* * alpha --- is character a legal letter */ alpha(c) char c; { if( c<= 'z' && c>= 'a' )return(YES); if( c<= 'Z' && c>= 'A' )return(YES); if( c== '_' )return(YES); if( c== '.' )return(YES); return(NO); } /* * alphan --- is character a legal letter or digit */ alphan(c) char c; { if( alpha(c) )return(YES); if( c<= '9' && c>= '0' )return(YES); if( c == '$' )return(YES); /* allow imbedded $ */ if( c == '@' )return(YES); /* allow imbedded @, added ver TER_2.0 added to permit redefinable variables */ return(NO); } /* * white --- is character whitespace? */ white(c) char c; { if( c == TAB || c == BLANK || c == '\n' )return(YES); return(NO); } /* * alloc --- allocate memory */ char * alloc(nbytes) int nbytes; { return(malloc(nbytes)); } /* * FNameGet --- Find a file name <file> or "file" in the Operand string added ver TER_2.0 6/17/89 note: this routine will return a file name with white space if between delimeters. This is permitted in AmigaDOS. Other DOS may hiccup or just use name up to white space */ int FNameGet(NameString) char *NameString; /* pointer to output string */ { char *frompoint; /* pointers to input string, don't bash Operand */ char *topoint; /* pointer to output string, don't bash NameString */ frompoint=Operand; /* include file name is in parsed string Operand */ topoint=NameString; /* copy of pointer to increment in copying */ if (*frompoint != '<' && *frompoint != '"') return(0); /* bad syntax */ frompoint++; /* skip < or " */ while (*frompoint != '>' && *frompoint != '"') /* look for delimeter */ { if (*frompoint == EOS) return(0); /* missing delimeter */ *topoint++ = *frompoint++; /* copy path & file name for DOS */ } *topoint=EOS; /* terminate file name */ #ifdef DEBUG2 printf("FNameGet: file name=%s\n",NameString); #endif return(1); /* proper syntax anyway */ } /* * --- strsave() find a place to save a string & return pointer to it added ver TER_2.0 6/18/89 function taken from Kernighan & Ritchie 78 */ char *strsave(s) char *s; { char *p; if ((p = alloc(strlen(s)+1)) != NULL) strcpy(p,s); return(p); } /* * pouterror() ---- print out standard error header added rel TER_2.0 6/18/89 */ void pouterror() { printf("%s, line no. ",Argv[Cfn]); /* current file name */ printf("%d: ",Line_num); /* current line number */ /* NOTE: THERE IS NO \n ! Calling procedure supplies suffixing error message and \n. viz. file pseudo.c procedure do_pseudo in case INCLUDE. Note also that error count is incremented. */ Err_count++; Page_lines++; /* increment lines per page */ } /* * New Page() --- form feed a new page, print heading & inc page number Moved here from do_pseudo (pseudo.c) in ver (TER) 2.02 19 Jun 89 so that can call from print_line() as well for p50 option. */ void NewPage() { Page_lines = 0; /* ver TER_2.08 so that OPT PAGE works */ printf ("\n\f\n"); printf ("%-10s",Argv[Cfn]); printf (" "); printf (" "); printf ("page %3d\n",Page_num++); } /* * LastChar() ----- return a pointer to the last character in a string Exception: will return garbage if NULL string */ char *LastChar(strpt) char *strpt; /* pointer to string to be examined */ { char *c; c=strpt; /* don't zap original */ while (*c != EOS) /* search for end */ c++; return(--c); /* back up one to last character */ }
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