584 lines
10 KiB
C
584 lines
10 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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static char* srcvar(void);
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static char* getsuffix(void);
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static void varinit(void);
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static void vieuwargs(int, char**);
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static void firstarg(char*);
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static int process(char*);
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static int startrf(trf*);
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static void block(trf*);
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static int mayprep(void);
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static void scanneeds(void);
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static void setneeds(const char*, int);
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static void noodstop(int);
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int main(int argc, char** argv)
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{
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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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{
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setlist(frontend);
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}
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else
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{
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setlist(FRONTENDS);
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}
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if (callname)
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{
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if (machine)
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{
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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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{
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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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{
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if (t_cont(*elem)->t_linker)
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{
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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)
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exit(n_error);
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for (n_sig = sigs; *n_sig; n_sig++)
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{
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if (signal(*n_sig, noodstop) == SIG_IGN)
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{
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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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{
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arg_count++;
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}
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scanlist(l_first(arguments), elem)
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{
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if (!process(l_content(*elem)) && !k_flag)
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exit(1);
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}
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orig.p_path = (char*)0;
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if (!rts)
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rts = ".";
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setsvar(keeps(RTS), rts);
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if (linker)
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getmapflags(linker);
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scanlist(l_first(tr_list), elem)
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{
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phase = t_cont(*elem);
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if (phase->t_combine && phase->t_do)
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{
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if (phase->t_blocked)
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{
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#ifdef DEBUG
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if (debug)
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{
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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)
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throws(p_basename);
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if (orig.p_path)
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{
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p_basename = keeps(ack_basename(orig.p_path));
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}
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else
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{
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p_basename = 0;
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}
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if (!startrf(phase) && !k_flag)
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exit(1);
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}
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}
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if (n_error)
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exit(n_error);
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exit(0);
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}
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static char* srcvar(void)
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{
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return orig.p_path;
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}
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static char* getsuffix(void)
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{
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return strrchr(orig.p_path, SUFCHAR);
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}
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static void varinit(void)
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{
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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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{
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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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void vieuwargs(int argc, char** argv)
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{
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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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{
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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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{
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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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{
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case 'm':
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if (machine)
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fuerror("Two machines?");
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machine = &argp[2];
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if (*machine == '\0')
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{
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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':
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if (nextarg >= argc)
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{
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fuerror("-o can't be the last flag");
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}
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if (outfile)
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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':
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Optlevel = atoi(&argp[2]);
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if (!Optlevel)
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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':
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if (argp[2])
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{
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v_flag += atoi(&argp[2]);
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eaten = 1;
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}
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else
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{
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v_flag++;
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}
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#ifdef DEBUG
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if (v_flag >= 3)
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debug = v_flag - 2;
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#endif
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break;
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case 'c':
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if (stopsuffix)
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fuerror("Two -c flags");
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stopsuffix = &argp[2];
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eaten = 1;
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if (*stopsuffix && *stopsuffix != SUFCHAR)
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{
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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':
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k_flag++;
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break;
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case 't':
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t_flag++;
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break;
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case 'R':
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eaten = 1;
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break;
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case 'r':
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if (argp[2] != SUFCHAR)
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{
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error("-r must be followed by %c", SUFCHAR);
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}
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l_add(&tail_list, &argp[2]);
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eaten = 1;
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break;
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case '.':
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if (rts)
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{
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if (strcmp(rts, &argp[1]) != 0)
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fuerror("Two run-time systems?");
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}
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else
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{
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rts = &argp[1];
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l_add(&head_list, rts);
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l_add(&tail_list, rts);
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}
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eaten = 1;
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break;
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case 0:
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nill_flag++;
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eaten++;
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hide = YES;
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break;
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case 'w':
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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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{
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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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{
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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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{
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l_add(&R_list, tokeep);
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}
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else
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{
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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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{
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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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static void firstarg(char* argp)
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{
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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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{
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name++;
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}
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else
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{
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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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static int process(char* arg)
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{
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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)
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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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{
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if (linker)
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add_input(&orig, linker);
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return 1;
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}
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if (p_basename)
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throws(p_basename);
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p_basename = keeps(ack_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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{
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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)
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add_input(&orig, linker);
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return 1;
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case F_NOMATCH:
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if (stopsuffix)
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werror("Unknown suffix in %s", arg);
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if (linker)
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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)
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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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{
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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)
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rts = tmp->t_rts;
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if (tmp->t_needed)
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{
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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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{
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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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return startrf(phase);
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}
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static int startrf(trf* first)
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{
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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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{
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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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{
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/* BEWARE, sign extension */
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case NO:
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break;
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default:
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if (!mayprep())
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break;
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case YES:
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do_preprocess = 1;
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break;
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}
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if (cpp_trafo && stopsuffix && strcmp(cpp_trafo->t_out, stopsuffix) == 0)
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{
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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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{
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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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{
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break;
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}
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if (!transform(phase))
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{
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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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{
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if (!orig.p_path)
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{
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vprint("phase %s failed\n",
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phase->t_name);
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}
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else
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{
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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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{
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#ifdef DEBUG
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if (debug)
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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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{
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fatal("attempt to discard the result file");
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}
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if (in.p_keeps)
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throws(in.p_path);
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in.p_keep = NO;
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in.p_keeps = NO;
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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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{
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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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static void block(trf* first)
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{
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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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{
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if (phase->t_combine)
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phase->t_blocked = YES;
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}
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}
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static int mayprep(void)
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{
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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)
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return 0;
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if (read(file, &fc, 1) != 1)
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fc = 0;
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close(file);
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return fc == '#';
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}
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|
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static void scanneeds(void)
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{
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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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static void setneeds(const char* suffix, int tail)
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{
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trf* phase;
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p_suffix = suffix;
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switch (getpath(&phase))
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{
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case F_OK:
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for (; phase; phase = phase->t_next)
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{
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if (phase->t_needed)
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{
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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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static void noodstop(int sig)
|
|
{
|
|
quit(-3);
|
|
}
|