/* Copyright (C) 2015 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 2003 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 2001 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 1997 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>

int
main(int argc, char **argv)
{
  char buf[1000];
  char fn[1000];
  char stubname[1000], realname[1000];
  int i;
  FILE *stubs, *as, *mk, *oh;

  /* Remove all the old files */
  for (i=0; ; i++)
  {
    sprintf(fn, "stub%04d.S", i);
    if (access(fn, F_OK))
      break;
    remove(fn);
  }
  mk = fopen("makefil2", "w");
  oh = fopen("makefile.oh", "w");
  fprintf(mk, "TOP=..\n\n");

  stubs = fopen(argv[1], "r");
  i = 0;
  while (fgets(buf, 1000, stubs))
  {
    if (strncmp(buf, "#define", 7))
      continue;
    sscanf(buf, "%*s %s %s", stubname, realname);
    if (strncmp(stubname, "__dj_include", 10) == 0)
      continue;

    sprintf(fn, "stub%04d.S", i);
    as = fopen(fn, "w");
    fprintf(as, "#include <libc/asmdefs.h>\n");
    /* Blank line at start of output file is added to work around
     * gcc-3.0 preprocessor bug. See:
     *
     * http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view&pr=3081&database=gcc
     *
     * for details. */
#ifdef __x86_64__
    fprintf(as, "\n\t.file \"%s.stub\"\n\t.global %s\n%s:\n\tjmp %s\n",
	    stubname, stubname, stubname, realname);
#else
    fprintf(as, "\n\t.file \"%s.stub\"\n\t.global _%s\n_%s:\n\tjmp _%s\n",
	    stubname, stubname, stubname, realname);
#endif
    fclose(as);

    fprintf(mk, "AS_SRC += %s\n", fn);
//    fprintf(oh, "&/stub%04d.o ", i);

    i++;
  }
  fprintf(mk, "\ninclude $(TOP)/../makefile.inc\n");
  fprintf(oh, "\n");
  fclose(mk);
  fclose(oh);
  fclose(stubs);

  return 0;
}