456 lines
9.7 KiB
C
456 lines
9.7 KiB
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "ack.h"
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#include "list.h"
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#include "trans.h"
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#include <local.h>
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#include "data.h"
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#include <signal.h>
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#ifndef NORCSID
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static char rcs_id[] = "$Id$" ;
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static char rcs_ack[] = RCS_ACK ;
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#endif
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static int sigs[] = { SIGINT, SIGHUP, SIGTERM, 0 } ;
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static int arg_count;
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extern char *getenv();
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main(argc,argv) char **argv ; {
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register list_elem *elem ;
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register char *frontend ;
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register int *n_sig ;
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register trf *phase ;
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progname=argv[0];
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varinit();
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vieuwargs(argc,argv);
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if ( (frontend=getenv("ACKFE")) ) {
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setlist(frontend) ;
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} else {
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setlist(FRONTENDS);
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}
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if ( callname ) {
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if ( machine ) {
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fuerror("can not produce code for both %s and %s",
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callname,machine) ;
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}
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machine= callname ;
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}
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if ( !machine && ! (machine=getenv("ACKM")) ) {
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#ifdef ACKM
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machine= ACKM; /* The default machine */
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#else
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fuerror("No machine specified") ;
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#endif
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}
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setlist(machine);
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/* Find the linker, needed for argument building */
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scanlist(l_first(tr_list),elem) {
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if ( t_cont(*elem)->t_linker ) {
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linker= t_cont(*elem) ;
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}
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}
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transini();
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scanneeds();
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sprintf(template,TMPNAME,getpid()) ;
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if ( n_error && !k_flag ) exit(n_error) ;
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for ( n_sig=sigs ; *n_sig ; n_sig++ ) {
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if ( signal(*n_sig,noodstop)==SIG_IGN ) {
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signal(*n_sig,SIG_IGN) ;
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}
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}
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scanlist ( l_first(arguments), elem ) {
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arg_count++;
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}
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scanlist ( l_first(arguments), elem ) {
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if ( !process(l_content(*elem)) && !k_flag ) exit(1) ;
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}
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orig.p_path= (char *)0 ;
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if ( !rts ) rts="." ;
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setsvar(keeps(RTS),rts) ;
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if ( linker ) getmapflags(linker) ;
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scanlist(l_first(tr_list),elem) {
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phase=t_cont(*elem) ;
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if ( phase->t_combine && phase->t_do ) {
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if ( phase->t_blocked ) {
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#ifdef DEBUG
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if ( debug ) {
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vprint("phase %s is blocked\n",
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phase->t_name) ;
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}
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#endif
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disc_inputs(phase) ;
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continue ;
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}
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orig.p_keep=YES ;
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orig.p_keeps=NO ;
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orig.p_path=phase->t_origname ;
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if ( p_basename ) throws(p_basename) ;
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if ( orig.p_path ) {
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p_basename= keeps(basename(orig.p_path)) ;
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} else {
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p_basename=0 ;
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}
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if ( !startrf(phase) && !k_flag ) exit(1) ;
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}
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}
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if ( n_error ) exit(n_error) ;
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exit(0) ;
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}
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char *srcvar() {
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return orig.p_path ;
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}
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char *getsuffix() {
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return strrchr(orig.p_path, SUFCHAR) ;
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}
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varinit() {
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/* initialize the string variables */
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register char *envstr ;
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extern char *em_dir;
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if ( envstr=getenv("ACKDIR") ) {
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em_dir = keeps(envstr);
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}
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setsvar(keeps(HOME),em_dir) ;
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setpvar(keeps(SRC),srcvar) ;
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setpvar(keeps(SUFFIX),getsuffix) ;
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}
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/************************* flag processing ***********************/
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vieuwargs(argc,argv) char **argv ; {
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register char *argp;
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register int nextarg ;
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register int eaten ;
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int hide ;
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firstarg(argv[0]) ;
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nextarg= 1 ;
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while ( nextarg<argc ) {
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argp= argv[nextarg] ;
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nextarg++ ;
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if ( argp[0]!='-' || argp[1]=='l' ) {
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/* Not a flag, or a library */
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l_add(&arguments,argp) ;
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continue ;
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}
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/* Flags */
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hide=NO ; /* Do not hide this flags to the phases */
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eaten=0 ; /* Did not 'eat' tail of flag yet */
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switch ( argp[1] ) {
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case 'm': if ( machine ) fuerror("Two machines?") ;
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machine= &argp[2];
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if (*machine == '\0') {
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fuerror("-m needs machine name");
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}
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eaten=1 ;
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break ;
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case 'o': if ( nextarg>=argc ) {
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fuerror("-o can't be the last flag") ;
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}
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if ( outfile ) fuerror("Two results?") ;
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outfile= argv[nextarg++] ;
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hide=YES ;
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break ;
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case 'O': Optlevel = atoi(&argp[2]);
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if (! Optlevel) Optlevel = 1;
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Optlist= &argp[2] ;
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eaten=1 ;
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break ;
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case 'v': if ( argp[2] ) {
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v_flag += atoi(&argp[2]) ;
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eaten=1 ;
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} else {
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v_flag++ ;
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}
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#ifdef DEBUG
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if ( v_flag>=3 ) debug=v_flag-2 ;
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#endif
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break ;
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case 'c': if ( stopsuffix ) fuerror("Two -c flags") ;
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stopsuffix= &argp[2]; eaten=1;
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if ( *stopsuffix && *stopsuffix!=SUFCHAR ) {
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fuerror("-c flag has invalid tail") ;
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}
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break ;
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case 'k': k_flag++ ;
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break ;
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case 't': t_flag++ ;
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break ;
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case 'R': eaten=1;
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break ;
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case 'r': if ( argp[2]!=SUFCHAR ) {
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error("-r must be followed by %c",SUFCHAR) ;
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}
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keeptail(&argp[2]); eaten=1 ;
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break ;
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case '.': if ( rts ) {
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if ( strcmp(rts,&argp[1])!=0 )
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fuerror("Two run-time systems?") ;
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} else {
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rts= &argp[1] ;
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keephead(rts) ; keeptail(rts) ;
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}
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eaten=1 ;
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break ;
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case 0 : nill_flag++ ; eaten++ ;
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hide=YES ;
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break;
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case 'w': w_flag++;
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break ;
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default: /* The flag is not recognized,
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put it on the list for the sub-processes
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*/
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#ifdef DEBUG
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if ( debug ) {
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vprint("Flag %s: phase dependent\n",argp) ;
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}
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#endif
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l_add(&flags,keeps(argp)) ;
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eaten=1 ;
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hide=YES ;
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}
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if ( !hide ) {
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register char *tokeep ;
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tokeep=keeps(argp) ;
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if ( argp[1]=='R' ) {
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do_Rflag(tokeep);
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} else {
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*tokeep |= NO_SCAN ;
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}
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l_add(&flags,tokeep) ;
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}
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if ( argp[2] && !eaten ) {
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werror("Unexpected characters at end of %s",argp) ;
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}
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}
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return ;
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}
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firstarg(argp) register char *argp ; {
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register char *name ;
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name=strrchr(argp,'/') ;
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if ( name && *(name+1) ) {
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name++ ;
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} else {
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name= argp ;
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}
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callname= name;
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}
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/************************* argument processing ***********************/
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process(arg) char *arg ; {
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/* Process files & library arguments */
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trf *phase ;
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register trf *tmp ;
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#ifdef DEBUG
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if ( debug ) vprint("Processing %s\n",arg) ;
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#endif
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p_suffix= strrchr(arg,SUFCHAR) ;
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orig.p_keep= YES ; /* Don't throw away the original ! */
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orig.p_keeps= NO;
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orig.p_path= arg ;
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if ( arg[0]=='-' || !p_suffix ) {
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if ( linker ) add_input(&orig,linker) ;
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return 1 ;
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}
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if ( p_basename ) throws(p_basename) ;
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p_basename= keeps(basename(arg)) ;
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/* Try to find a path through the transformations */
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switch( getpath(&phase) ) {
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case F_NOPATH :
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error("Cannot produce the desired file from %s",arg) ;
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if ( linker ) add_input(&orig,linker) ;
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return 1 ;
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case F_NOMATCH :
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if ( stopsuffix ) werror("Unknown suffix in %s",arg) ;
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if ( linker ) add_input(&orig,linker) ;
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return 1 ;
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case F_OK :
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break ;
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}
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if ( !phase ) return 1 ;
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for ( tmp=phase ; tmp ; tmp=tmp->t_next )
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if ( !tmp->t_visited ) {
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/* The flags are set up once.
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At the first time each phase is in a list.
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The program name and flags may already be touched
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by vieuwargs.
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*/
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tmp->t_visited=YES ;
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if ( tmp->t_priority<0 )
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werror("Using phase %s (negative priority)",
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tmp->t_name) ;
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if ( !rts && tmp->t_rts ) rts= tmp->t_rts ;
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if ( tmp->t_needed ) {
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add_head(tmp->t_needed) ;
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add_tail(tmp->t_needed) ;
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}
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}
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if ( phase->t_combine ) {
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add_input(&orig,phase) ;
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return 1 ;
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}
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in= orig ;
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if ( !nill_flag && arg_count > 1 ) {
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printf("%s\n",arg) ;
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}
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return startrf(phase) ;
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}
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int startrf(first) trf *first ; {
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/* Start the transformations at the indicated phase */
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register trf *phase ;
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phase=first ;
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for(;;) {
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int do_preprocess = 0;
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int only_prep = 0;
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switch ( phase->t_prep ) {
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/* BEWARE, sign extension */
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case NO : break ;
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default : if ( !mayprep() ) break ;
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case YES: do_preprocess = 1;
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break;
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}
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if ( cpp_trafo && stopsuffix &&
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strcmp(cpp_trafo->t_out,stopsuffix)==0 ) {
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/* user explicitly asked for preprocessing */
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do_preprocess = 1;
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only_prep = 1;
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}
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if (do_preprocess && !transform(cpp_trafo) ) {
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n_error++ ;
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#ifdef DEBUG
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vprint("Pre-processor failed\n") ;
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#endif
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return 0 ;
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}
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if ( only_prep ) {
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break ;
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}
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if ( !transform(phase) ) {
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n_error++ ;
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block(phase->t_next) ;
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#ifdef DEBUG
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if ( debug ) {
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if ( !orig.p_path ) {
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vprint("phase %s failed\n",
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phase->t_name ) ;
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} else {
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vprint("phase %s for %s failed\n",
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phase->t_name,orig.p_path) ;
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}
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}
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#endif
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return 0 ;
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}
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first=NO ;
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phase=phase->t_next ;
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if ( !phase ) {
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#ifdef DEBUG
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if ( debug ) vprint("Transformation sequence complete for %s\n",
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orig.p_path) ;
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#endif
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/* No more work on this file */
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if ( !in.p_keep ) {
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fatal("attempt to discard the result file") ;
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}
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if ( in.p_keeps ) throws(in.p_path) ;
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in.p_keep=NO ; in.p_keeps=NO ; in.p_path= (char *) 0 ;
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return 1 ;
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}
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if ( phase->t_combine ) {
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add_input(&in,phase) ;
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break ;
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}
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}
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return 1 ;
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}
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block(first) trf *first ; {
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/* One of the input files of this phase could not be produced,
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block all combiners taking their input from this one.
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*/
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register trf *phase ;
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for ( phase=first ; phase ; phase=phase->t_next ) {
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if ( phase->t_combine ) phase->t_blocked=YES ;
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}
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}
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mayprep() {
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int file ;
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char fc ;
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file=open(in.p_path,0);
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if ( file<0 ) return 0 ;
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if ( read(file,&fc,1)!=1 ) fc=0 ;
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close(file) ;
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return fc=='#' ;
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}
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keephead(suffix) char *suffix ; {
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l_add(&head_list, suffix) ;
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}
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keeptail(suffix) char *suffix ; {
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l_add(&tail_list, suffix) ;
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}
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scanneeds() {
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register list_elem *elem ;
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scanlist(l_first(head_list), elem) { setneeds(l_content(*elem),0) ; }
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l_clear(&head_list) ;
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scanlist(l_first(tail_list), elem) { setneeds(l_content(*elem),1) ; }
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l_clear(&tail_list) ;
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}
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setneeds(suffix,tail) char *suffix ; {
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trf *phase ;
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p_suffix= suffix ;
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switch ( getpath(&phase) ) {
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case F_OK :
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for ( ; phase ; phase= phase->t_next ) {
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if ( phase->t_needed ) {
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if ( tail )
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add_tail(phase->t_needed) ;
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else
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add_head(phase->t_needed) ;
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}
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}
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break ;
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case F_NOMATCH :
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werror("\"%s\": unrecognized suffix",suffix) ;
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break ;
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case F_NOPATH :
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werror("sorry, cannot produce the desired file(s) from %s files",
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suffix) ;
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break ;
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}
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}
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