[gforth] / gforth / engine / main.c  

gforth: gforth/engine/main.c

Diff for /gforth/engine/main.c between version 1.29 and 1.30

version 1.29, Sat Jul 24 13:07:23 1999 UTC version 1.30, Sat Aug 7 21:40:37 1999 UTC
Line 78 
Line 78 
 char *progname = "gforth";  char *progname = "gforth";
 int optind = 1;  int optind = 1;
 #endif  #endif
   #ifdef HAS_DEBUG
 static int debug=0;  static int debug=0;
   #endif
 ImageHeader *gforth_header;  ImageHeader *gforth_header;
   
   #ifdef MEMCMP_AS_SUBROUTINE
   int gforth_memcmp(const char * s1, const char * s2, size_t n)
   {
     return memcmp(s1, s2, n);
   }
   #endif
   
 /* image file format:  /* image file format:
  *  "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n")   *  "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n")
  *   padding to a multiple of 8   *   padding to a multiple of 8
Line 179 
Line 188 
   Address r;    Address r;
   /* leave a little room (64B) for stack underflows */    /* leave a little room (64B) for stack underflows */
   if ((r = malloc(size+64))==NULL) {    if ((r = malloc(size+64))==NULL) {
   #ifdef HAS_DEBUG
     perror(progname);      perror(progname);
   #endif
     exit(1);      exit(1);
   }    }
   r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));    r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));
   #ifdef HAS_DEBUG
   if (debug)    if (debug)
     fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r);      fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r);
   #endif
   return r;    return r;
 }  }
   
Line 195 
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   Address r;    Address r;
   
 #if defined(MAP_ANON)  #if defined(MAP_ANON)
   #ifdef HAS_DEBUG
   if (debug)    if (debug)
     fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size);      fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size);
   #endif
   r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);    r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);
 #else /* !defined(MAP_ANON) */  #else /* !defined(MAP_ANON) */
   /* Ultrix (at least) does not define MAP_FILE and MAP_PRIVATE (both are    /* Ultrix (at least) does not define MAP_FILE and MAP_PRIVATE (both are
Line 213 
Line 228 
     dev_zero = open("/dev/zero", O_RDONLY);      dev_zero = open("/dev/zero", O_RDONLY);
   if (dev_zero == -1) {    if (dev_zero == -1) {
     r = (Address)-1;      r = (Address)-1;
   #ifdef HAS_DEBUG
     if (debug)      if (debug)
       fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ",        fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ",
               strerror(errno));                strerror(errno));
   #endif
   } else {    } else {
   #ifdef HAS_DEBUG
     if (debug)      if (debug)
       fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size);        fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size);
   #endif
     r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0);      r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0);
   }    }
 #endif /* !defined(MAP_ANON) */  #endif /* !defined(MAP_ANON) */
   
   if (r != (Address)-1) {    if (r != (Address)-1) {
   #ifdef HAS_DEBUG
     if (debug)      if (debug)
       fprintf(stderr, "success, address=$%lx\n", (long) r);        fprintf(stderr, "success, address=$%lx\n", (long) r);
   #endif
     if (pagesize != 1)      if (pagesize != 1)
       next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */        next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */
     return r;      return r;
   }    }
   #ifdef HAS_DEBUG
   if (debug)    if (debug)
     fprintf(stderr, "failed: %s\n", strerror(errno));      fprintf(stderr, "failed: %s\n", strerror(errno));
   #endif
 #endif /* HAVE_MMAP */  #endif /* HAVE_MMAP */
   /* use malloc as fallback */    /* use malloc as fallback */
   return verbose_malloc(size);    return verbose_malloc(size);
Line 297 
Line 320 
   for(;stack>0;stack--)    for(;stack>0;stack--)
     *--sp0=entries[stack-1];      *--sp0=entries[stack-1];
   
   #ifdef SYSSIGNALS
   get_winsize();    get_winsize();
   
 #ifdef SYSSIGNALS  
   install_signal_handlers(); /* right place? */    install_signal_handlers(); /* right place? */
   
   if ((throw_code=setjmp(throw_jmp_buf))) {    if ((throw_code=setjmp(throw_jmp_buf))) {
Line 329 
Line 352 
 }  }
   
   
   #ifndef INCLUDE_IMAGE
 void print_sizes(Cell sizebyte)  void print_sizes(Cell sizebyte)
      /* print size information */       /* print size information */
 {  {
Line 341 
Line 365 
           1 << ((sizebyte >> 5) & 3));            1 << ((sizebyte >> 5) & 3));
 }  }
   
 #ifndef INCLUDE_IMAGE  
 Address loader(FILE *imagefile, char* filename)  Address loader(FILE *imagefile, char* filename)
 /* returns the address of the image proper (after the preamble) */  /* returns the address of the image proper (after the preamble) */
 {  {
Line 386 
Line 409 
     preamblesize+=8;      preamblesize+=8;
   } while(memcmp(magic,"Gforth2",7));    } while(memcmp(magic,"Gforth2",7));
   magic7 = magic[7];    magic7 = magic[7];
   #ifdef HAS_DEBUG
   if (debug) {    if (debug) {
     magic[7]='\0';      magic[7]='\0';
     fprintf(stderr,"Magic found: %s ", magic);      fprintf(stderr,"Magic found: %s ", magic);
     print_sizes(magic7);      print_sizes(magic7);
   }    }
   #endif
   
   if (magic7 != sizebyte)    if (magic7 != sizebyte)
     {      {
Line 412 
Line 437 
 #elif PAGESIZE  #elif PAGESIZE
   pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */    pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */
 #endif  #endif
   #ifdef HAS_DEBUG
   if (debug)    if (debug)
     fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize);      fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize);
   #endif
   
   image = dict_alloc(preamblesize+dictsize+data_offset)+data_offset;    image = dict_alloc(preamblesize+dictsize+data_offset)+data_offset;
   rewind(imagefile);  /* fseek(imagefile,0L,SEEK_SET); */    rewind(imagefile);  /* fseek(imagefile,0L,SEEK_SET); */
Line 475 
Line 502 
   char * expfilename = tilde_cstr(fullfilename, strlen(fullfilename), 1);    char * expfilename = tilde_cstr(fullfilename, strlen(fullfilename), 1);
   
   image_file=fopen(expfilename,"rb");    image_file=fopen(expfilename,"rb");
   #ifdef HAS_DEBUG
   if (image_file!=NULL && debug)    if (image_file!=NULL && debug)
     fprintf(stderr, "Opened image file: %s\n", expfilename);      fprintf(stderr, "Opened image file: %s\n", expfilename);
   #endif
   return image_file;    return image_file;
 }  }
   
Line 637 
Line 666 
   
 int main(int argc, char **argv, char **env)  int main(int argc, char **argv, char **env)
 {  {
   #ifdef HAS_OS
   char *path = getenv("GFORTHPATH") ? : DEFAULTPATH;    char *path = getenv("GFORTHPATH") ? : DEFAULTPATH;
   #else
     char *path = DEFAULTPATH;
   #endif
 #ifndef INCLUDE_IMAGE  #ifndef INCLUDE_IMAGE
   char *imagename="gforth.fi";    char *imagename="gforth.fi";
   FILE *image_file;    FILE *image_file;

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