19990502 sourceware importbinu_ss_19990502

1 files changed, 280 insertions, 0 deletions

diff --git a/bfd/coff-z8k.c b/bfd/coff-z8k.c
new file mode 100644
index 0000000..04049e89
--- /dev/null
+++ b/bfd/coff-z8k.c
@@ -0,0 +1,280 @@
+/* BFD back-end for Zilog Z800n COFF binaries.
+   Copyright 1992, 93, 94, 95, 1997 Free Software Foundation, Inc.
+   Contributed by Cygnus Support.
+   Written by Steve Chamberlain, <sac@cygnus.com>.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program 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 of the License, or
+(at your option) any later version.
+
+This program 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 this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "bfdlink.h"
+#include "coff/z8k.h"
+#include "coff/internal.h"
+#include "libcoff.h"
+
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
+
+static reloc_howto_type r_imm32 =
+HOWTO (R_IMM32, 0, 1, 32, false, 0,
+       complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff,
+       0xffffffff, false);
+
+static reloc_howto_type r_imm4l =
+HOWTO (R_IMM4L, 0, 1, 4, false, 0,
+       complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false);
+
+static reloc_howto_type r_da =
+HOWTO (R_IMM16, 0, 1, 16, false, 0,
+       complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff,
+       false);
+
+static reloc_howto_type r_imm8 =
+HOWTO (R_IMM8, 0, 1, 8, false, 0,
+       complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff,
+       false);
+
+static reloc_howto_type r_jr =
+HOWTO (R_JR, 0, 1, 8, true, 0, complain_overflow_signed, 0,
+       "r_jr", true, 0, 0, true);
+
+/* Turn a howto into a reloc number */
+
+static int 
+coff_z8k_select_reloc (howto)
+     reloc_howto_type *howto;
+{
+  return howto->type;
+}
+
+#define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto)
+
+
+#define BADMAG(x) Z8KBADMAG(x)
+#define Z8K 1			/* Customize coffcode.h */
+#define __A_MAGIC_SET__
+
+
+
+/* Code to swap in the reloc */
+#define SWAP_IN_RELOC_OFFSET   bfd_h_get_32
+#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
+#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
+  dst->r_stuff[0] = 'S'; \
+  dst->r_stuff[1] = 'C';
+
+/* Code to turn a r_type into a howto ptr, uses the above howto table
+   */
+
+static void
+rtype2howto (internal, dst)
+     arelent * internal;
+     struct internal_reloc *dst;
+{
+  switch (dst->r_type)
+    {
+    default:
+      abort ();
+      break;
+    case R_IMM8:
+      internal->howto = &r_imm8;
+      break;
+     case R_IMM16:
+      internal->howto = &r_da;
+      break;
+    case R_JR:
+      internal->howto = &r_jr;
+      break;
+    case R_IMM32:
+      internal->howto = &r_imm32;
+      break;
+    case R_IMM4L:
+      internal->howto = &r_imm4l;
+      break;
+    }
+}
+
+#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
+
+
+/* Perform any necessary magic to the addend in a reloc entry */
+
+
+#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
+ cache_ptr->addend =  ext_reloc.r_offset;
+
+
+#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
+ reloc_processing(relent, reloc, symbols, abfd, section)
+
+static void 
+reloc_processing (relent, reloc, symbols, abfd, section)
+     arelent * relent;
+     struct internal_reloc *reloc;
+     asymbol ** symbols;
+     bfd * abfd;
+     asection * section;
+{
+  relent->address = reloc->r_vaddr;
+  rtype2howto (relent, reloc);
+
+  if (reloc->r_symndx > 0)
+    {
+      relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
+    }
+  else
+    {
+      relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+    }
+
+
+  relent->addend = reloc->r_offset;
+  relent->address -= section->vma;
+}
+
+static void
+extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
+     bfd *in_abfd;
+     struct bfd_link_info *link_info;
+     struct bfd_link_order *link_order;
+     arelent *reloc;
+     bfd_byte *data;
+     unsigned int *src_ptr;
+     unsigned int *dst_ptr;
+{
+  asection *input_section = link_order->u.indirect.section;
+
+  switch (reloc->howto->type)
+    {
+    case R_IMM8:
+      bfd_put_8 (in_abfd,
+		 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
+		 data + *dst_ptr);
+      (*dst_ptr) += 1;
+      (*src_ptr) += 1;
+      break;
+
+    case R_IMM32:
+      bfd_put_32 (in_abfd,
+		  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
+		  data + *dst_ptr);
+      (*dst_ptr) += 4;
+      (*src_ptr) += 4;
+      break;
+
+    case R_IMM4L:
+      bfd_put_8 (in_abfd,
+		 ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0) 
+		  | (0x0f
+		     & bfd_coff_reloc16_get_value (reloc, link_info,
+						   input_section))),
+		 data + *dst_ptr);
+      (*dst_ptr) += 1;
+      (*src_ptr) += 1;
+      break;
+
+    case R_IMM16:
+      bfd_put_16 (in_abfd,
+		  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
+		  data + *dst_ptr);
+      (*dst_ptr) += 2;
+      (*src_ptr) += 2;
+      break;
+
+    case R_JR:
+      {
+	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
+						  input_section);
+	bfd_vma dot = (link_order->offset
+		       + *dst_ptr
+		       + input_section->output_section->vma);
+	int gap = dst - dot - 1;/* -1 since were in the odd byte of the
+				    word and the pc's been incremented */
+
+	if (gap & 1)
+	  abort ();
+	gap /= 2;
+	if (gap > 128 || gap < -128)
+	  {
+	    if (! ((*link_info->callbacks->reloc_overflow)
+		   (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
+		    reloc->howto->name, reloc->addend, input_section->owner,
+		    input_section, reloc->address)))
+	      abort ();
+	  }
+	bfd_put_8 (in_abfd, gap, data + *dst_ptr);
+	(*dst_ptr)++;
+	(*src_ptr)++;
+	break;
+      }
+    default:
+      abort ();
+    }
+}
+
+#define coff_reloc16_extra_cases extra_case
+
+#include "coffcode.h"
+
+
+#undef  coff_bfd_get_relocated_section_contents
+#undef coff_bfd_relax_section
+#define coff_bfd_get_relocated_section_contents \
+  bfd_coff_reloc16_get_relocated_section_contents
+#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
+
+const bfd_target z8kcoff_vec =
+{
+  "coff-z8k",			/* name */
+  bfd_target_coff_flavour,
+  BFD_ENDIAN_BIG,		/* data byte order is big */
+  BFD_ENDIAN_BIG,		/* header byte order is big */
+
+  (HAS_RELOC | EXEC_P |		/* object flags */
+   HAS_LINENO | HAS_DEBUG |
+   HAS_SYMS | HAS_LOCALS | WP_TEXT),
+
+  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC),	/* section flags */
+  '_',				/* leading symbol underscore */
+  '/',				/* ar_pad_char */
+  15,				/* ar_max_namelen */
+  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+     bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* data */
+  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+     bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* hdrs */
+
+  {_bfd_dummy_target, coff_object_p,	/* bfd_check_format */
+   bfd_generic_archive_p, _bfd_dummy_target},
+  {bfd_false, coff_mkobject, _bfd_generic_mkarchive,	/* bfd_set_format */
+   bfd_false},
+  {bfd_false, coff_write_object_contents,	/* bfd_write_contents */
+   _bfd_write_archive_contents, bfd_false},
+
+     BFD_JUMP_TABLE_GENERIC (coff),
+     BFD_JUMP_TABLE_COPY (coff),
+     BFD_JUMP_TABLE_CORE (_bfd_nocore),
+     BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
+     BFD_JUMP_TABLE_SYMBOLS (coff),
+     BFD_JUMP_TABLE_RELOCS (coff),
+     BFD_JUMP_TABLE_WRITE (coff),
+     BFD_JUMP_TABLE_LINK (coff),
+     BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+  COFF_SWAP_TABLE,
+};