19990502 sourceware importbinu_ss_19990502

1 files changed, 627 insertions, 0 deletions

diff --git a/gas/config/obj-ieee.c b/gas/config/obj-ieee.c
new file mode 100644
index 0000000..30a0798
--- /dev/null
+++ b/gas/config/obj-ieee.c
@@ -0,0 +1,627 @@
+/* obj-format for ieee-695 records.
+   Copyright (C) 1991, 92, 93, 94, 95, 1997, 1998 Free Software Foundation, Inc.
+
+   This file is part of GAS, the GNU Assembler.
+
+   GAS is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   GAS is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GAS; see the file COPYING.  If not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA. */
+
+
+/*
+  created by
+
+  steve chamberlain steve@cygnus.com
+  */
+
+/*
+  this will hopefully become the port through which bfd and gas talk,
+  for the moment, only ieee is known to work well.
+  */
+
+#include "bfd.h"
+#include "as.h"
+#include "subsegs.h"
+#include "output-file.h"
+#include "frags.h"
+
+bfd *abfd;
+
+/* How many addresses does the .align take? */
+static relax_addressT
+relax_align (address, alignment)
+     register relax_addressT address;	/* Address now. */
+     register long alignment;	/* Alignment (binary). */
+{
+  relax_addressT mask;
+  relax_addressT new_address;
+
+  mask = ~((~0) << alignment);
+  new_address = (address + mask) & (~mask);
+  return (new_address - address);
+}				/* relax_align() */
+
+/* calculate the size of the frag chain and create a bfd section
+   to contain all of it */
+static void
+DEFUN (size_section, (abfd, idx),
+       bfd * abfd AND
+       unsigned int idx)
+{
+  asection *sec;
+  unsigned int size = 0;
+  fragS *frag = segment_info[idx].frag_root;
+  while (frag)
+    {
+      if (frag->fr_address != size)
+	{
+	  printf (_("Out of step\n"));
+	  size = frag->fr_address;
+	}
+      size += frag->fr_fix;
+      switch (frag->fr_type)
+	{
+	case rs_fill:
+	case rs_org:
+	  size += frag->fr_offset * frag->fr_var;
+	  break;
+	case rs_align:
+	case rs_align_code:
+	  {
+	    addressT off;
+
+	    off = relax_align (size, frag->fr_offset);
+	    if (frag->fr_subtype != 0 && off > frag->fr_subtype)
+	      off = 0;
+	    size += off;
+	  }
+	}
+      frag = frag->fr_next;
+    }
+  if (size)
+    {
+      char *name = segment_info[idx].name;
+      if (name == (char *) NULL)
+	{
+	  name = ".data";
+	}
+      segment_info[idx].user_stuff = (char *) (sec = bfd_make_section (abfd, name));
+      /* Make it output through itself */
+      sec->output_section = sec;
+      sec->flags |= SEC_HAS_CONTENTS;
+      bfd_set_section_size (abfd, sec, size);
+    }
+}
+
+/* run through a frag chain and write out the data to go with it */
+static void
+DEFUN (fill_section, (abfd, idx),
+       bfd * abfd AND
+       unsigned int idx)
+{
+  asection *sec = segment_info[idx].user_stuff;
+  if (sec)
+    {
+      fragS *frag = segment_info[idx].frag_root;
+      unsigned int offset = 0;
+      while (frag)
+	{
+	  unsigned int fill_size;
+	  unsigned int count;
+	  switch (frag->fr_type)
+	    {
+	    case rs_fill:
+	    case rs_align:
+	    case rs_org:
+	      if (frag->fr_fix)
+		{
+		  bfd_set_section_contents (abfd,
+					    sec,
+					    frag->fr_literal,
+					    frag->fr_address,
+					    frag->fr_fix);
+		}
+	      offset += frag->fr_fix;
+	      fill_size = frag->fr_var;
+	      if (fill_size)
+		{
+		  unsigned int off = frag->fr_fix;
+		  for (count = frag->fr_offset; count; count--)
+		    {
+		      bfd_set_section_contents (abfd, sec,
+						frag->fr_literal +
+						frag->fr_fix,
+						frag->fr_address + off,
+						fill_size);
+		      off += fill_size;
+		    }
+		}
+	      break;
+	    default:
+	      abort ();
+	    }
+	  frag = frag->fr_next;
+	}
+    }
+}
+
+/* Count the relocations in a chain */
+
+static unsigned int
+DEFUN (count_entries_in_chain, (idx),
+       unsigned int idx)
+{
+  unsigned int nrelocs;
+  fixS *fixup_ptr;
+
+  /* Count the relocations */
+  fixup_ptr = segment_info[idx].fix_root;
+  nrelocs = 0;
+  while (fixup_ptr != (fixS *) NULL)
+    {
+      fixup_ptr = fixup_ptr->fx_next;
+      nrelocs++;
+    }
+  return nrelocs;
+}
+
+/* output all the relocations for a section */
+void
+DEFUN (do_relocs_for, (idx),
+       unsigned int idx)
+{
+  unsigned int nrelocs;
+  arelent **reloc_ptr_vector;
+  arelent *reloc_vector;
+  asymbol **ptrs;
+  asection *section = (asection *) (segment_info[idx].user_stuff);
+  unsigned int i;
+  fixS *from;
+  if (section)
+    {
+      nrelocs = count_entries_in_chain (idx);
+
+      reloc_ptr_vector = (arelent **) malloc ((nrelocs + 1) * sizeof (arelent *));
+      reloc_vector = (arelent *) malloc (nrelocs * sizeof (arelent));
+      ptrs = (asymbol **) malloc (nrelocs * sizeof (asymbol *));
+      from = segment_info[idx].fix_root;
+      for (i = 0; i < nrelocs; i++)
+	{
+	  arelent *to = reloc_vector + i;
+	  asymbol *s;
+	  reloc_ptr_vector[i] = to;
+	  to->howto = (reloc_howto_type *) (from->fx_r_type);
+
+#if 0	  /* We can't represent complicated things in a reloc yet */
+	  if (from->fx_addsy == 0 || from->fx_subsy != 0) abort();
+#endif
+
+	  s = &(from->fx_addsy->sy_symbol.sy);
+	  to->address = ((char *) (from->fx_frag->fr_address +
+				   from->fx_where))
+	    - ((char *) (&(from->fx_frag->fr_literal)));
+	  to->addend = from->fx_offset;
+	  /* If we know the symbol which we want to relocate to, turn
+	     this reloaction into a section relative.
+
+	     If this relocation is pcrelative, and we know the
+	     destination, we still want to keep the relocation - since
+	     the linker might relax some of the bytes, but it stops
+	     being pc relative and turns into an absolute relocation. */
+	  if (s)
+	    {
+	      if ((s->flags & BSF_UNDEFINED) == 0)
+		{
+		  to->section = s->section;
+
+		  /* We can refer directly to the value field here,
+		     rather than using S_GET_VALUE, because this is
+		     only called after do_symbols, which sets up the
+		     value field.  */
+		  to->addend += s->value;
+
+		  to->sym_ptr_ptr = 0;
+		  if (to->howto->pcrel_offset)
+		    {
+		      /* This is a pcrel relocation, the addend should be adjusted */
+		      to->addend -= to->address + 1;
+		    }
+		}
+	      else
+		{
+		  to->section = 0;
+		  *ptrs = &(from->fx_addsy->sy_symbol.sy);
+		  to->sym_ptr_ptr = ptrs;
+
+		  if (to->howto->pcrel_offset)
+		    {
+		      /* This is a pcrel relocation, the addend should be adjusted */
+		      to->addend -= to->address - 1;
+		    }
+		}
+
+	    }
+	  else
+	    {
+	      to->section = 0;
+	    }
+
+	  ptrs++;
+	  from = from->fx_next;
+	}
+
+      /* attatch to the section */
+      section->orelocation = reloc_ptr_vector;
+      section->reloc_count = nrelocs;
+      section->flags |= SEC_LOAD;
+    }
+}
+
+/* do the symbols.. */
+static void
+DEFUN (do_symbols, (abfd),
+       bfd * abfd)
+{
+  extern symbolS *symbol_rootP;
+  symbolS *ptr;
+  asymbol **symbol_ptr_vec;
+  asymbol *symbol_vec;
+  unsigned int count = 0;
+  unsigned int index;
+
+
+  for (ptr = symbol_rootP;
+       ptr != (symbolS *) NULL;
+       ptr = ptr->sy_next)
+    {
+      if (SEG_NORMAL (ptr->sy_symbol.seg))
+	{
+	  ptr->sy_symbol.sy.section =
+	    (asection *) (segment_info[ptr->sy_symbol.seg].user_stuff);
+	  S_SET_VALUE (ptr, S_GET_VALUE (ptr) + ptr->sy_frag->fr_address);
+	  if (ptr->sy_symbol.sy.flags == 0)
+	    {
+	      ptr->sy_symbol.sy.flags = BSF_LOCAL;
+	    }
+	}
+      else
+	{
+	  switch (ptr->sy_symbol.seg)
+	    {
+	    case SEG_ABSOLUTE:
+	      ptr->sy_symbol.sy.flags |= BSF_ABSOLUTE;
+	      ptr->sy_symbol.sy.section = 0;
+	      break;
+	    case SEG_UNKNOWN:
+	      ptr->sy_symbol.sy.flags = BSF_UNDEFINED;
+	      ptr->sy_symbol.sy.section = 0;
+	      break;
+	    default:
+	      abort ();
+	    }
+	}
+      ptr->sy_symbol.sy.value = S_GET_VALUE (ptr);
+      count++;
+    }
+  symbol_ptr_vec = (asymbol **) malloc ((count + 1) * sizeof (asymbol *));
+
+  index = 0;
+  for (ptr = symbol_rootP;
+       ptr != (symbolS *) NULL;
+       ptr = ptr->sy_next)
+    {
+      symbol_ptr_vec[index] = &(ptr->sy_symbol.sy);
+      index++;
+    }
+  symbol_ptr_vec[index] = 0;
+  abfd->outsymbols = symbol_ptr_vec;
+  abfd->symcount = count;
+}
+
+/* The generic as->bfd converter. Other backends may have special case
+   code */
+
+void
+DEFUN_VOID (bfd_as_write_hook)
+{
+  int i;
+
+  for (i = SEG_E0; i < SEG_UNKNOWN; i++)
+    {
+      size_section (abfd, i);
+    }
+
+
+  for (i = SEG_E0; i < SEG_UNKNOWN; i++)
+    fill_section (abfd, i);
+
+  do_symbols (abfd);
+
+  for (i = SEG_E0; i < SEG_UNKNOWN; i++)
+    do_relocs_for (i);
+
+}
+
+S_SET_SEGMENT (x, y)
+     symbolS *x;
+     int y;
+{
+  x->sy_symbol.seg = y;
+}
+
+S_IS_DEFINED (x)
+     symbolS *x;
+{
+  if (SEG_NORMAL (x->sy_symbol.seg))
+    {
+      return 1;
+    }
+  switch (x->sy_symbol.seg)
+    {
+    case SEG_UNKNOWN:
+      return 0;
+    default:
+      abort ();
+    }
+}
+
+S_IS_EXTERNAL (x)
+{
+  abort ();
+}
+
+S_GET_DESC (x)
+{
+  abort ();
+}
+
+S_GET_SEGMENT (x)
+     symbolS *x;
+{
+  return x->sy_symbol.seg;
+}
+
+S_SET_EXTERNAL (x)
+     symbolS *x;
+{
+  x->sy_symbol.sy.flags |= BSF_GLOBAL | BSF_EXPORT;
+}
+
+S_SET_NAME (x, y)
+     symbolS *x;
+     char *y;
+{
+  x->sy_symbol.sy.name = y;
+}
+
+S_GET_OTHER (x)
+{
+  abort ();
+}
+
+S_IS_DEBUG (x)
+{
+  abort ();
+}
+
+#ifndef segment_name
+char *
+segment_name ()
+{
+  abort ();
+}
+#endif
+
+void
+obj_read_begin_hook ()
+{
+}
+
+static void
+obj_ieee_section (ignore)
+     int ignore;
+{
+  extern char *input_line_pointer;
+  extern char is_end_of_line[];
+  char *p = input_line_pointer;
+  char *s = p;
+  int i;
+  /* Look up the name, if it doesn't exist, make it */
+  while (*p && *p != ' ' && *p != ',' && !is_end_of_line[*p])
+    {
+      p++;
+    }
+  for (i = SEG_E0; i < SEG_UNKNOWN; i++)
+    {
+      if (segment_info[i].hadone)
+	{
+	  if (strncmp (segment_info[i].name, s, p - s) == 0)
+	    {
+	      goto ok;
+
+	    }
+	}
+      else
+	break;
+    }
+  if (i == SEG_UNKNOWN)
+    {
+      as_bad (_("too many sections"));
+      return;
+    }
+
+  segment_info[i].hadone = 1;
+  segment_info[i].name = malloc (p - s + 1);
+  memcpy (segment_info[i].name, s, p - s);
+  segment_info[i].name[p - s] = 0;
+ok:
+  subseg_set (i, 0);
+  while (!is_end_of_line[*p])
+    p++;
+  input_line_pointer = p;
+
+}
+
+
+void cons ();
+void s_ignore ();
+
+
+void s_globl ();
+const pseudo_typeS obj_pseudo_table[] =
+{
+  {"section", obj_ieee_section, 0},
+  {"data.b", cons, 1},
+  {"data.w", cons, 2},
+  {"data.l", cons, 4},
+  {"export", s_globl, 0},
+  {"option", s_ignore, 0},
+  {"end", s_ignore, 0},
+  {"import", s_ignore, 0},
+  {"sdata", stringer, 0},
+  0,
+
+};
+
+
+
+void
+obj_symbol_new_hook (symbolP)
+     symbolS *symbolP;
+{
+  symbolP->sy_symbol.sy.the_bfd = abfd;
+}
+
+
+
+
+
+#if 1
+extern void
+DEFUN_VOID (write_object_file)
+{
+  int i;
+  struct frchain *frchain_ptr;
+  struct frag *frag_ptr;
+
+  abfd = bfd_openw (out_file_name, "ieee");
+
+  if (abfd == 0)
+    {
+      as_perror (_("FATAL: Can't create %s"), out_file_name);
+      exit (EXIT_FAILURE);
+    }
+  bfd_set_format (abfd, bfd_object);
+  bfd_set_arch_mach (abfd, bfd_arch_h8300, 0);
+  subseg_set (1, 0);
+  subseg_set (2, 0);
+  subseg_set (3, 0);
+  for (frchain_ptr = frchain_root;
+       frchain_ptr != (struct frchain *) NULL;
+       frchain_ptr = frchain_ptr->frch_next)
+    {
+      /* Run through all the sub-segments and align them up. Also close any
+	 open frags. We tack a .fill onto the end of the frag chain so
+	 that any .align's size can be worked by looking at the next
+	 frag.  */
+
+      subseg_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg);
+#ifndef SUB_SEGMENT_ALIGN
+#define SUB_SEGMENT_ALIGN(SEG) 2
+#endif
+      frag_align (SUB_SEGMENT_ALIGN (now_seg), 0, 0);
+      frag_wane (frag_now);
+      frag_now->fr_fix = 0;
+      know (frag_now->fr_next == NULL);
+    }
+
+  /* Now build one big frag chain for each segment, linked through
+	   fr_next. */
+  for (i = SEG_E0; i < SEG_UNKNOWN; i++)
+    {
+
+      fragS **prev_frag_ptr_ptr;
+      struct frchain *next_frchain_ptr;
+
+      /*	struct frag **head_ptr = segment_info[i].frag_root;*/
+
+      segment_info[i].frag_root = segment_info[i].frchainP->frch_root;
+#if 0
+      /* Im not sure what this is for */
+      for (frchain_ptr = segment_info[i].frchainP->frch_root;
+	   frchain_ptr != (struct frchain *) NULL;
+	   frchain_ptr = frchain_ptr->frch_next)
+	{
+	  *head_ptr = frchain_ptr;
+	  head_ptr = &frchain_ptr->next;
+	}
+
+
+#endif
+    }
+
+  for (i = SEG_E0; i < SEG_UNKNOWN; i++)
+    {
+      relax_segment (segment_info[i].frag_root, i);
+    }
+
+  /* Now the addresses of the frags are correct within the segment */
+
+  bfd_as_write_hook ();
+  bfd_close (abfd);
+}
+
+#endif
+
+H_SET_TEXT_SIZE (a, b)
+{
+  abort ();
+}
+
+H_GET_TEXT_SIZE ()
+{
+  abort ();
+}
+
+H_SET_BSS_SIZE ()
+{
+  abort ();
+}
+
+H_SET_STRING_SIZE ()
+{
+  abort ();
+}
+
+H_SET_RELOCATION_SIZE ()
+{
+  abort ();
+}
+
+H_SET_MAGIC_NUMBER ()
+{
+  abort ();
+}
+
+H_GET_FILE_SIZE ()
+{
+  abort ();
+}
+
+H_GET_TEXT_RELOCATION_SIZE ()
+{
+  abort ();
+}
+
+/* end of obj-ieee.c */