===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/elf2ecoff/Attic/elf2ecoff.c,v
retrieving revision 1.2
retrieving revision 1.3
diff -c -r1.2 -r1.3
*** src/usr.bin/elf2ecoff/Attic/elf2ecoff.c	1997/10/13 20:08:21	1.2
--- src/usr.bin/elf2ecoff/Attic/elf2ecoff.c	2003/04/15 08:33:34	1.3
***************
*** 1,5 ****
! /*	$OpenBSD: elf2ecoff.c,v 1.2 1997/10/13 20:08:21 maja Exp $	*/
! /*	$NetBSD: elf2ecoff.c,v 1.8 1997/07/20 03:50:54 jonathan Exp $	*/
  
  /*
   * Copyright (c) 1997 Jonathan Stone
--- 1,5 ----
! /* $OpenBSD: elf2ecoff.c,v 1.3 2003/04/15 08:33:34 deraadt Exp $	 */
! /* $NetBSD: elf2ecoff.c,v 1.8 1997/07/20 03:50:54 jonathan Exp $	 */
  
  /*
   * Copyright (c) 1997 Jonathan Stone
***************
*** 31,43 ****
   * SUCH DAMAGE.
   */
  
! /* elf2ecoff.c
  
-    This program converts an elf executable to an ECOFF executable.
-    No symbol table is retained.   This is useful primarily in building
-    net-bootable kernels for machines (e.g., DECstation and Alpha) which
-    only support the ECOFF object file format. */
- 
  #include <sys/types.h>
  #include <fcntl.h>
  #include <unistd.h>
--- 31,45 ----
   * SUCH DAMAGE.
   */
  
! /*
!  * elf2ecoff.c
!  *
!  * This program converts an elf executable to an ECOFF executable. No symbol
!  * table is retained.   This is useful primarily in building net-bootable
!  * kernels for machines (e.g., DECstation and Alpha) which only support the
!  * ECOFF object file format.
!  */
  
  #include <sys/types.h>
  #include <fcntl.h>
  #include <unistd.h>
***************
*** 49,440 ****
  #include <string.h>
  #include <limits.h>
  
! extern char *__progname;
  
  struct sect {
!   unsigned long vaddr;
!   unsigned long len;
  };
  
! int phcmp ();
! char *saveRead (int file, off_t offset, off_t len, char *name);
! int copy (int, int, off_t, off_t);
! int translate_syms (int, int, off_t, off_t, off_t, off_t);
! extern int errno;
! int *symTypeTable;
  
! main (int argc, char **argv, char **envp)
  {
!   Elf32_Ehdr ex;
!   Elf32_Phdr *ph;
!   Elf32_Shdr *sh;
!   struct sym *symtab;
!   char *shstrtab;
!   int strtabix, symtabix;
!   int i, pad;
!   struct sect text, data, bss;
!   struct ecoff_exechdr eh;
!   struct ecoff_scnhdr esecs [3];
!   int infile, outfile;
!   unsigned long cur_vma = ULONG_MAX;
  
!   text.len = data.len = bss.len = 0;
!   text.vaddr = data.vaddr = bss.vaddr = 0;
  
!   /* Check args... */
!   if (argc < 3 || argc > 4)
!     {
!     usage:
!       fprintf (stderr,
! 	       "usage: %s <elf executable> <ecoff executable>\n", __progname);
!       exit (1);
!     }
  
!   /* Try the input file... */
!   if ((infile = open (argv [1], O_RDONLY)) < 0)
!     {
!       fprintf (stderr, "Can't open %s for read: %s\n",
! 	       argv [1], strerror (errno));
!       exit (1);
!     }
  
!   /* Read the header, which is at the beginning of the file... */
!   i = read (infile, &ex, sizeof ex);
!   if (i != sizeof ex)
!     {
!       fprintf (stderr, "ex: %s: %s.\n",
! 	       argv [1], i ? strerror (errno) : "End of file reached");
!       exit (1);
!     }
  
!   /* Read the program headers... */
!   ph = (Elf32_Phdr *)saveRead (infile, ex.e_phoff,
! 				ex.e_phnum * sizeof (Elf32_Phdr), "ph");
!   /* Read the section headers... */
!   sh = (Elf32_Shdr *)saveRead (infile, ex.e_shoff,
! 				ex.e_shnum * sizeof (Elf32_Shdr), "sh");
!   /* Read in the section string table. */
!   shstrtab = saveRead (infile, sh [ex.e_shstrndx].sh_offset,
! 		       sh [ex.e_shstrndx].sh_size, "shstrtab");
  
!   /* Figure out if we can cram the program header into an ECOFF
!      header...  Basically, we can't handle anything but loadable
!      segments, but we can ignore some kinds of segments.  We can't
!      handle holes in the address space.  Segments may be out of order,
!      so we sort them first. */
  
!   qsort (ph, ex.e_phnum, sizeof (Elf32_Phdr), phcmp);
  
!   for (i = 0; i < ex.e_phnum; i++)
!     {
!       /* Section types we can ignore... */
!       if (ph [i].p_type == PT_NULL || ph [i].p_type == PT_NOTE ||
! 	  ph [i].p_type == PT_PHDR || ph [i].p_type == PT_MIPS_REGINFO)
! 	continue;
!       /* Section types we can't handle... */
!       else if (ph [i].p_type != PT_LOAD)
!         {
! 	  fprintf (stderr, "Program header %d type %d can't be converted.\n");
! 	  exit (1);
  	}
-       /* Writable (data) segment? */
-       if (ph [i].p_flags & PF_W)
- 	{
- 	  struct sect ndata, nbss;
  
! 	  ndata.vaddr = ph [i].p_vaddr;
! 	  ndata.len = ph [i].p_filesz;
! 	  nbss.vaddr = ph [i].p_vaddr + ph [i].p_filesz;
! 	  nbss.len = ph [i].p_memsz - ph [i].p_filesz;
! 
! 	  combine (&data, &ndata, 0);
! 	  combine (&bss, &nbss, 1);
  	}
!       else
! 	{
! 	  struct sect ntxt;
! 
! 	  ntxt.vaddr = ph [i].p_vaddr;
! 	  ntxt.len = ph [i].p_filesz;
! 
! 	  combine (&text, &ntxt);
  	}
!       /* Remember the lowest segment start address. */
!       if (ph [i].p_vaddr < cur_vma)
! 	cur_vma = ph [i].p_vaddr;
!     }
  
!   /* Sections must be in order to be converted... */
!   if (text.vaddr > data.vaddr || data.vaddr > bss.vaddr ||
!       text.vaddr + text.len > data.vaddr || data.vaddr + data.len > bss.vaddr)
!     {
!       fprintf (stderr, "Sections ordering prevents a.out conversion.\n");
!       exit (1);
!     }
  
!   /* If there's a data section but no text section, then the loader
!      combined everything into one section.   That needs to be the
!      text section, so just make the data section zero length following
!      text. */
!   if (data.len && !text.len)
!     {
!       text = data;
!       data.vaddr = text.vaddr + text.len;
!       data.len = 0;
!     }
  
!   /* If there is a gap between text and data, we'll fill it when we copy
!      the data, so update the length of the text segment as represented in
!      a.out to reflect that, since a.out doesn't allow gaps in the program
!      address space. */
!   if (text.vaddr + text.len < data.vaddr)
!     text.len = data.vaddr - text.vaddr;
  
!   /* We now have enough information to cons up an a.out header... */
!   eh.a.magic = ECOFF_OMAGIC;
!   eh.a.vstamp = 200;
!   eh.a.tsize = text.len;
!   eh.a.dsize = data.len;
!   eh.a.bsize = bss.len;
!   eh.a.entry = ex.e_entry;
!   eh.a.text_start = text.vaddr;
!   eh.a.data_start = data.vaddr;
!   eh.a.bss_start = bss.vaddr;
!   eh.a.ea_gprmask = 0xf3fffffe;
!   bzero (&eh.a.ea_cprmask, sizeof eh.a.ea_cprmask);
!   eh.a.ea_gp_value = 0; /* unused. */
  
!   eh.f.f_magic = ECOFF_MAGIC_MIPSEL;
!   eh.f.f_nscns = 3;
!   eh.f.f_timdat = 0;	/* bogus */
!   eh.f.f_symptr = 0;
!   eh.f.f_nsyms = 0;
!   eh.f.f_opthdr = sizeof eh.a;
!   eh.f.f_flags = 0x100f; /* Stripped, not sharable. */
  
!   strcpy (esecs [0].s_name, ".text");
!   strcpy (esecs [1].s_name, ".data");
!   strcpy (esecs [2].s_name, ".bss");
!   esecs [0].s_paddr = esecs [0].s_vaddr = eh.a.text_start;
!   esecs [1].s_paddr = esecs [1].s_vaddr = eh.a.data_start;
!   esecs [2].s_paddr = esecs [2].s_vaddr = eh.a.bss_start;
!   esecs [0].s_size = eh.a.tsize;
!   esecs [1].s_size = eh.a.dsize;
!   esecs [2].s_size = eh.a.bsize;
!   esecs [0].s_scnptr = ECOFF_TXTOFF (&eh);
!   esecs [1].s_scnptr = ECOFF_DATOFF (&eh);
!   esecs [2].s_scnptr = esecs [1].s_scnptr +
! 	  ECOFF_ROUND (esecs [1].s_size, ECOFF_SEGMENT_ALIGNMENT (&eh));
!   esecs [0].s_relptr = esecs [1].s_relptr = esecs [2].s_relptr = 0;
!   esecs [0].s_lnnoptr = esecs [1].s_lnnoptr = esecs [2].s_lnnoptr = 0;
!   esecs [0].s_nreloc = esecs [1].s_nreloc = esecs [2].s_nreloc = 0;
!   esecs [0].s_nlnno = esecs [1].s_nlnno = esecs [2].s_nlnno = 0;
!   esecs [0].s_flags = 0x20;
!   esecs [1].s_flags = 0x40;
!   esecs [2].s_flags = 0x82;
  
!   /* Make the output file... */
!   if ((outfile = open (argv [2], O_WRONLY | O_CREAT, 0777)) < 0)
!     {
!       fprintf (stderr, "Unable to create %s: %s\n", argv [2], strerror (errno));
!       exit (1);
!     }
  
!   /* Write the headers... */
!   i = write (outfile, &eh.f, sizeof(struct ecoff_filehdr));
!   if (i != sizeof(struct ecoff_filehdr))
!     {
!       perror ("efh: write");
!       exit (1);
! 
!   for (i = 0; i < 6; i++)
!     {
!       printf ("Section %d: %s phys %x  size %x  file offset %x\n",
! 	      i, esecs [i].s_name, esecs [i].s_paddr,
! 	      esecs [i].s_size, esecs [i].s_scnptr);
!     }
!     }
!   fprintf (stderr, "wrote %d byte file header.\n", i);
! 
!   i = write (outfile, &eh.a, sizeof(struct ecoff_aouthdr));
!   if (i != sizeof(struct ecoff_aouthdr))
!     {
!       perror ("eah: write");
!       exit (1);
!     }
!   fprintf (stderr, "wrote %d byte a.out header.\n", i);
! 
!   i = write (outfile, &esecs, sizeof esecs);
!   if (i != sizeof esecs)
!     {
!       perror ("esecs: write");
!       exit (1);
!     }
!   fprintf (stderr, "wrote %d bytes of section headers.\n", i);
! 
!   if (pad = ((sizeof eh + sizeof esecs) & 15))
!     {
!       pad = 16 - pad;
!       i = write (outfile, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0", pad);
!       if (i < 0)
! 	{
! 	  perror ("ipad: write");
! 	  exit (1);
  	}
!       fprintf (stderr, "wrote %d byte pad.\n", i);
!     }
  
!   /* Copy the loadable sections.   Zero-fill any gaps less than 64k;
!      complain about any zero-filling, and die if we're asked to zero-fill
!      more than 64k. */
!   for (i = 0; i < ex.e_phnum; i++)
!     {
!       /* Unprocessable sections were handled above, so just verify that
! 	 the section can be loaded before copying. */
!       if (ph [i].p_type == PT_LOAD && ph [i].p_filesz)
  	{
! 	  if (cur_vma != ph [i].p_vaddr)
! 	    {
! 	      unsigned long gap = ph [i].p_vaddr - cur_vma;
! 	      char obuf [1024];
! 	      if (gap > 65536)
! 		{
! 		  fprintf (stderr, "Intersegment gap (%d bytes) too large.\n",
! 			   gap);
! 		  exit (1);
  		}
- 	      fprintf (stderr, "Warning: %d byte intersegment gap.\n", gap);
- 	      memset (obuf, 0, sizeof obuf);
- 	      while (gap)
- 		{
- 		  int count = write (outfile, obuf, (gap > sizeof obuf
- 						     ? sizeof obuf : gap));
- 		  if (count < 0)
- 		    {
- 		      fprintf (stderr, "Error writing gap: %s\n",
- 			       strerror (errno));
- 		      exit (1);
- 		    }
- 		  gap -= count;
- 		}
- 	    }
- fprintf (stderr, "writing %d bytes...\n", ph [i].p_filesz);
- 	  copy (outfile, infile, ph [i].p_offset, ph [i].p_filesz);
- 	  cur_vma = ph [i].p_vaddr + ph [i].p_filesz;
  	}
-     }
  
!   /*
!    * Write a page of padding for boot PROMS that read entire pages.
!    * Without this, they may attempt to read past the end of the
!    * data section, incur an error, and refuse to boot.
!    */
!    {
!      char obuf [4096];
!      memset (obuf, 0, sizeof obuf);
!      if (write(outfile, obuf, sizeof(obuf)) != sizeof(obuf)) {
! 	fprintf(stderr, "Error writing PROM padding: %s\n",
! 		strerror(errno));
! 	exit(1);
!      }
!    }
! 
!   /* Looks like we won... */
!   exit (0);
  }
  
! copy (out, in, offset, size)
!      int out, in;
!      off_t offset, size;
  {
!   char ibuf [4096];
!   int remaining, cur, count;
  
!   /* Go the the start of the ELF symbol table... */
!   if (lseek (in, offset, SEEK_SET) < 0)
!     {
!       perror ("copy: lseek");
!       exit (1);
!     }
! 
!   remaining = size;
!   while (remaining)
!     {
!       cur = remaining;
!       if (cur > sizeof ibuf)
! 	cur = sizeof ibuf;
!       remaining -= cur;
!       if ((count = read (in, ibuf, cur)) != cur)
! 	{
! 	  fprintf (stderr, "copy: read: %s\n",
! 		   count ? strerror (errno) : "premature end of file");
! 	  exit (1);
  	}
!       if ((count = write (out, ibuf, cur)) != cur)
! 	{
! 	  perror ("copy: write");
! 	  exit (1);
  	}
-     }
  }
  
! /* Combine two segments, which must be contiguous.   If pad is true, it's
!    okay for there to be padding between. */
! combine (base, new, pad)
!      struct sect *base, *new;
!      int pad;
  {
!   if (!base -> len)
!     *base = *new;
!   else if (new -> len)
!     {
!       if (base -> vaddr + base -> len != new -> vaddr)
! 	{
! 	  if (pad)
! 	    base -> len = new -> vaddr - base -> vaddr;
! 	  else
! 	    {
! 	      fprintf (stderr,
! 		       "Non-contiguous data can't be converted.\n");
! 	      exit (1);
! 	    }
  	}
-       base -> len += new -> len;
-     }
  }
  
! phcmp (h1, h2)
!      Elf32_Phdr *h1, *h2;
  {
!   if (h1 -> p_vaddr > h2 -> p_vaddr)
!     return 1;
!   else if (h1 -> p_vaddr < h2 -> p_vaddr)
!     return -1;
!   else
!     return 0;
  }
  
! char *saveRead (int file, off_t offset, off_t len, char *name)
  {
!   char *tmp;
!   int count;
!   off_t off;
!   if ((off = lseek (file, offset, SEEK_SET)) < 0)
!     {
!       fprintf (stderr, "%s: fseek: %s\n", name, strerror (errno));
!       exit (1);
!     }
!   if (!(tmp = (char *)malloc (len)))
!     {
!       fprintf (stderr, "%s: Can't allocate %d bytes.\n", name, len);
!       exit (1);
!     }
!   count = read (file, tmp, len);
!   if (count != len)
!     {
!       fprintf (stderr, "%s: read: %s.\n",
! 	       name, count ? strerror (errno) : "End of file reached");
!       exit (1);
!     }
!   return tmp;
  }
--- 51,416 ----
  #include <string.h>
  #include <limits.h>
  
! extern char    *__progname;
  
  struct sect {
! 	unsigned long   vaddr;
! 	unsigned long   len;
  };
  
! int	phcmp();
! char	*saveRead(int file, off_t offset, off_t len, char *name);
! int	copy(int, int, off_t, off_t);
! int	translate_syms(int, int, off_t, off_t, off_t, off_t);
! int	*symTypeTable;
  
! int
! main(int argc, char *argv[])
  {
! 	Elf32_Ehdr      ex;
! 	Elf32_Phdr     *ph;
! 	Elf32_Shdr     *sh;
! 	struct sym     *symtab;
! 	char	   *shstrtab;
! 	int	     strtabix, symtabix;
! 	int	     i, pad;
! 	struct sect     text, data, bss;
! 	struct ecoff_exechdr eh;
! 	struct ecoff_scnhdr esecs[3];
! 	int	     infile, outfile;
! 	unsigned long   cur_vma = ULONG_MAX;
  
! 	text.len = data.len = bss.len = 0;
! 	text.vaddr = data.vaddr = bss.vaddr = 0;
  
! 	/* Check args... */
! 	if (argc < 3 || argc > 4) {
! usage:
! 		fprintf(stderr,
! 		    "usage: %s <elf executable> <ecoff executable>\n", __progname);
! 		exit(1);
! 	}
! 	/* Try the input file... */
! 	if ((infile = open(argv[1], O_RDONLY)) < 0) {
! 		fprintf(stderr, "Can't open %s for read: %s\n",
! 		    argv[1], strerror(errno));
! 		exit(1);
! 	}
! 	/* Read the header, which is at the beginning of the file... */
! 	i = read(infile, &ex, sizeof ex);
! 	if (i != sizeof ex) {
! 		fprintf(stderr, "ex: %s: %s.\n",
! 		    argv[1], i ? strerror(errno) : "End of file reached");
! 		exit(1);
! 	}
! 	/* Read the program headers... */
! 	ph = (Elf32_Phdr *) saveRead(infile, ex.e_phoff,
! 	ex.e_phnum * sizeof(Elf32_Phdr), "ph");
! 	/* Read the section headers... */
! 	sh = (Elf32_Shdr *) saveRead(infile, ex.e_shoff,
! 	    ex.e_shnum * sizeof(Elf32_Shdr), "sh");
! 	/* Read in the section string table. */
! 	shstrtab = saveRead(infile, sh[ex.e_shstrndx].sh_offset,
! 	    sh[ex.e_shstrndx].sh_size, "shstrtab");
  
! 	/*
! 	 * Figure out if we can cram the program header into an ECOFF
! 	 * header...  Basically, we can't handle anything but loadable
! 	 * segments, but we can ignore some kinds of segments.  We can't
! 	 * handle holes in the address space.  Segments may be out of order,
! 	 * so we sort them first.
! 	 */
  
! 	qsort(ph, ex.e_phnum, sizeof(Elf32_Phdr), phcmp);
  
! 	for (i = 0; i < ex.e_phnum; i++) {
! 		/* Section types we can ignore... */
! 		if (ph[i].p_type == PT_NULL || ph[i].p_type == PT_NOTE ||
! 		    ph[i].p_type == PT_PHDR || ph[i].p_type == PT_MIPS_REGINFO)
! 			continue;
! 		/* Section types we can't handle... */
! 		else if (ph[i].p_type != PT_LOAD) {
! 			fprintf(stderr,
! 			    "Program header %d type %d can't be converted.\n");
! 			exit(1);
! 		}
! 		/* Writable (data) segment? */
! 		if (ph[i].p_flags & PF_W) {
! 			struct sect     ndata, nbss;
  
! 			ndata.vaddr = ph[i].p_vaddr;
! 			ndata.len = ph[i].p_filesz;
! 			nbss.vaddr = ph[i].p_vaddr + ph[i].p_filesz;
! 			nbss.len = ph[i].p_memsz - ph[i].p_filesz;
  
! 			combine(&data, &ndata, 0);
! 			combine(&bss, &nbss, 1);
! 		} else {
! 			struct sect     ntxt;
  
! 			ntxt.vaddr = ph[i].p_vaddr;
! 			ntxt.len = ph[i].p_filesz;
! 			combine(&text, &ntxt);
! 		}
! 		/* Remember the lowest segment start address. */
! 		if (ph[i].p_vaddr < cur_vma)
! 			cur_vma = ph[i].p_vaddr;
  	}
  
! 	/* Sections must be in order to be converted... */
! 	if (text.vaddr > data.vaddr || data.vaddr > bss.vaddr ||
! 	    text.vaddr + text.len > data.vaddr || data.vaddr + data.len > bss.vaddr) {
! 		fprintf(stderr, "Sections ordering prevents a.out conversion.\n");
! 		exit(1);
  	}
! 	/*
! 	 * If there's a data section but no text section, then the loader
! 	 * combined everything into one section.   That needs to be the text
! 	 * section, so just make the data section zero length following text.
! 	 */
! 	if (data.len && !text.len) {
! 		text = data;
! 		data.vaddr = text.vaddr + text.len;
! 		data.len = 0;
  	}
! 	/*
! 	 * If there is a gap between text and data, we'll fill it when we
! 	 * copy the data, so update the length of the text segment as
! 	 * represented in a.out to reflect that, since a.out doesn't allow
! 	 * gaps in the program address space.
! 	 */
! 	if (text.vaddr + text.len < data.vaddr)
! 		text.len = data.vaddr - text.vaddr;
  
! 	/* We now have enough information to cons up an a.out header... */
! 	eh.a.magic = ECOFF_OMAGIC;
! 	eh.a.vstamp = 200;
! 	eh.a.tsize = text.len;
! 	eh.a.dsize = data.len;
! 	eh.a.bsize = bss.len;
! 	eh.a.entry = ex.e_entry;
! 	eh.a.text_start = text.vaddr;
! 	eh.a.data_start = data.vaddr;
! 	eh.a.bss_start = bss.vaddr;
! 	eh.a.ea_gprmask = 0xf3fffffe;
! 	bzero(&eh.a.ea_cprmask, sizeof eh.a.ea_cprmask);
! 	eh.a.ea_gp_value = 0;	/* unused. */
  
! 	eh.f.f_magic = ECOFF_MAGIC_MIPSEL;
! 	eh.f.f_nscns = 3;
! 	eh.f.f_timdat = 0;	/* bogus */
! 	eh.f.f_symptr = 0;
! 	eh.f.f_nsyms = 0;
! 	eh.f.f_opthdr = sizeof eh.a;
! 	eh.f.f_flags = 0x100f;	/* Stripped, not sharable. */
  
! 	strlcpy(esecs[0].s_name, ".text", sizeof(esecs[0].s_name));
! 	strlcpy(esecs[1].s_name, ".data", sizeof(esecs[0].s_name));
! 	strlcpy(esecs[2].s_name, ".bss", sizeof(esecs[0].s_name));
! 	esecs[0].s_paddr = esecs[0].s_vaddr = eh.a.text_start;
! 	esecs[1].s_paddr = esecs[1].s_vaddr = eh.a.data_start;
! 	esecs[2].s_paddr = esecs[2].s_vaddr = eh.a.bss_start;
! 	esecs[0].s_size = eh.a.tsize;
! 	esecs[1].s_size = eh.a.dsize;
! 	esecs[2].s_size = eh.a.bsize;
! 	esecs[0].s_scnptr = ECOFF_TXTOFF(&eh);
! 	esecs[1].s_scnptr = ECOFF_DATOFF(&eh);
! 	esecs[2].s_scnptr = esecs[1].s_scnptr +
! 	    ECOFF_ROUND(esecs[1].s_size, ECOFF_SEGMENT_ALIGNMENT(&eh));
! 	esecs[0].s_relptr = esecs[1].s_relptr = esecs[2].s_relptr = 0;
! 	esecs[0].s_lnnoptr = esecs[1].s_lnnoptr = esecs[2].s_lnnoptr = 0;
! 	esecs[0].s_nreloc = esecs[1].s_nreloc = esecs[2].s_nreloc = 0;
! 	esecs[0].s_nlnno = esecs[1].s_nlnno = esecs[2].s_nlnno = 0;
! 	esecs[0].s_flags = 0x20;
! 	esecs[1].s_flags = 0x40;
! 	esecs[2].s_flags = 0x82;
  
! 	/* Make the output file... */
! 	if ((outfile = open(argv[2], O_WRONLY | O_CREAT, 0777)) < 0) {
! 		fprintf(stderr, "Unable to create %s: %s\n", argv[2], strerror(errno));
! 		exit(1);
! 	}
! 	/* Write the headers... */
! 	i = write(outfile, &eh.f, sizeof(struct ecoff_filehdr));
! 	if (i != sizeof(struct ecoff_filehdr)) {
! 		perror("efh: write");
! 		exit(1);
  
! 		for (i = 0; i < 6; i++) {
! 			printf("Section %d: %s phys %x  size %x  file offset %x\n",
! 			    i, esecs[i].s_name, esecs[i].s_paddr,
! 			    esecs[i].s_size, esecs[i].s_scnptr);
! 		}
! 	}
! 	fprintf(stderr, "wrote %d byte file header.\n", i);
  
! 	i = write(outfile, &eh.a, sizeof(struct ecoff_aouthdr));
! 	if (i != sizeof(struct ecoff_aouthdr)) {
! 		perror("eah: write");
! 		exit(1);
! 	}
! 	fprintf(stderr, "wrote %d byte a.out header.\n", i);
  
! 	i = write(outfile, &esecs, sizeof esecs);
! 	if (i != sizeof esecs) {
! 		perror("esecs: write");
! 		exit(1);
! 	}
! 	fprintf(stderr, "wrote %d bytes of section headers.\n", i);
  
! 	if (pad = ((sizeof eh + sizeof esecs) & 15)) {
! 		pad = 16 - pad;
! 		i = write(outfile, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0", pad);
! 		if (i < 0) {
! 			perror("ipad: write");
! 			exit(1);
! 		}
! 		fprintf(stderr, "wrote %d byte pad.\n", i);
  	}
! 	/*
! 	 * Copy the loadable sections.   Zero-fill any gaps less than 64k;
! 	 * complain about any zero-filling, and die if we're asked to
! 	 * zero-fill more than 64k.
! 	 */
! 	for (i = 0; i < ex.e_phnum; i++) {
! 		/*
! 		 * Unprocessable sections were handled above, so just verify
! 		 * that the section can be loaded before copying.
! 		 */
! 		if (ph[i].p_type == PT_LOAD && ph[i].p_filesz) {
! 			if (cur_vma != ph[i].p_vaddr) {
! 				unsigned long   gap = ph[i].p_vaddr - cur_vma;
! 				char	    obuf[1024];
! 				if (gap > 65536) {
! 					fprintf(stderr, "Intersegment gap (%d bytes) too large.\n",
! 						gap);
! 					exit(1);
! 				}
! 				fprintf(stderr, "Warning: %d byte intersegment gap.\n", gap);
! 				memset(obuf, 0, sizeof obuf);
! 				while (gap) {
! 					int count = write(outfile, obuf,
! 					    (gap > sizeof obuf
! 					    ? sizeof obuf : gap));
! 					if (count < 0) {
! 						fprintf(stderr,
! 						    "Error writing gap: %s\n",
! 						    strerror(errno));
! 						exit(1);
! 					}
! 					gap -= count;
! 				}
! 			}
! 			fprintf(stderr, "writing %d bytes...\n", ph[i].p_filesz);
! 			copy(outfile, infile, ph[i].p_offset, ph[i].p_filesz);
! 			cur_vma = ph[i].p_vaddr + ph[i].p_filesz;
! 		}
! 	}
  
! 	/*
! 	 * Write a page of padding for boot PROMS that read entire pages.
! 	 * Without this, they may attempt to read past the end of the
! 	 * data section, incur an error, and refuse to boot.
! 	 */
  	{
! 		char	    obuf[4096];
! 		memset(obuf, 0, sizeof obuf);
! 		if (write(outfile, obuf, sizeof(obuf)) != sizeof(obuf)) {
! 			fprintf(stderr, "Error writing PROM padding: %s\n",
! 				strerror(errno));
! 			exit(1);
  		}
  	}
  
! 	/* Looks like we won... */
! 	exit(0);
  }
  
! copy(out, in, offset, size)
! 	int	     out, in;
! 	off_t	   offset, size;
  {
! 	char	    ibuf[4096];
! 	int	    remaining, cur, count;
  
! 	/* Go the the start of the ELF symbol table... */
! 	if (lseek(in, offset, SEEK_SET) < 0) {
! 		perror("copy: lseek");
! 		exit(1);
  	}
! 	remaining = size;
! 	while (remaining) {
! 		cur = remaining;
! 		if (cur > sizeof ibuf)
! 			cur = sizeof ibuf;
! 		remaining -= cur;
! 		if ((count = read(in, ibuf, cur)) != cur) {
! 			fprintf(stderr, "copy: read: %s\n",
! 			 count ? strerror(errno) : "premature end of file");
! 			exit(1);
! 		}
! 		if ((count = write(out, ibuf, cur)) != cur) {
! 			perror("copy: write");
! 			exit(1);
! 		}
  	}
  }
  
! /*
!  * Combine two segments, which must be contiguous.   If pad is true, it's
!  * okay for there to be padding between.
!  */
! combine(base, new, pad)
! 	struct sect    *base, *new;
! 	int	     pad;
  {
! 	if (!base->len)
! 		*base = *new;
! 	else if (new->len) {
! 		if (base->vaddr + base->len != new->vaddr) {
! 			if (pad)
! 				base->len = new->vaddr - base->vaddr;
! 			else {
! 				fprintf(stderr,
! 				"Non-contiguous data can't be converted.\n");
! 				exit(1);
! 			}
! 		}
! 		base->len += new->len;
  	}
  }
  
! phcmp(h1, h2)
! 	Elf32_Phdr     *h1, *h2;
  {
! 	if (h1->p_vaddr > h2->p_vaddr)
! 		return 1;
! 	else if (h1->p_vaddr < h2->p_vaddr)
! 		return -1;
! 	else
! 		return 0;
  }
  
! char	   *
! saveRead(int file, off_t offset, off_t len, char *name)
  {
! 	char	   *tmp;
! 	int	     count;
! 	off_t	   off;
! 
! 	if ((off = lseek(file, offset, SEEK_SET)) < 0) {
! 		fprintf(stderr, "%s: fseek: %s\n", name, strerror(errno));
! 		exit(1);
! 	}
! 	if (!(tmp = (char *) malloc(len))) {
! 		fprintf(stderr, "%s: Can't allocate %d bytes.\n", name, len);
! 		exit(1);
! 	}
! 	count = read(file, tmp, len);
! 	if (count != len) {
! 		fprintf(stderr, "%s: read: %s.\n",
! 		    name, count ? strerror(errno) : "End of file reached");
! 		exit(1);
! 	}
! 	return tmp;
  }