Initial revision

1 files changed, 330 insertions, 0 deletions

diff --git a/bfd/coff-m88k.c b/bfd/coff-m88k.c
new file mode 100644
index 0000000000..8da0b05253
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+++ b/bfd/coff-m88k.c
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+/* BFD back-end for Motorola 88000 COFF "Binary Compatability Standard" files.
+   Copyright 1990, 91, 92, 93, 94, 95, 97, 1998 Free Software Foundation, Inc.
+   Written by Cygnus Support.
+
+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.  */
+
+#define M88 1		/* Customize various include files */
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "coff/m88k.h"
+#include "coff/internal.h"
+#include "libcoff.h"
+
+static boolean m88k_is_local_label_name PARAMS ((bfd *, const char *));
+static bfd_reloc_status_type m88k_special_reloc
+  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
+static void reloc_processing
+  PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
+
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
+
+#define GET_SCNHDR_NRELOC bfd_h_get_32
+#define GET_SCNHDR_NLNNO bfd_h_get_32
+
+/* On coff-m88k, local labels start with '@'.  */
+
+#define coff_bfd_is_local_label_name m88k_is_local_label_name
+
+static boolean
+m88k_is_local_label_name (abfd, name)
+     bfd *abfd;
+     const char *name;
+{
+  return name[0] == '@';
+}
+
+static bfd_reloc_status_type 
+m88k_special_reloc (abfd, reloc_entry, symbol, data,
+		    input_section, output_bfd, error_message)
+     bfd *abfd;
+     arelent *reloc_entry;
+     asymbol *symbol;
+     PTR data;
+     asection *input_section;
+     bfd *output_bfd;
+     char **error_message;
+{
+  reloc_howto_type *howto = reloc_entry->howto;
+
+  switch (howto->type)
+    {
+    case R_HVRT16:
+    case R_LVRT16:
+      if (output_bfd != (bfd *) NULL)
+	{
+	  /* This is a partial relocation, and we want to apply the
+	     relocation to the reloc entry rather than the raw data.
+	     Modify the reloc inplace to reflect what we now know.  */
+
+	  reloc_entry->address += input_section->output_offset;
+	}
+      else
+	{
+	  bfd_vma output_base = 0;
+	  bfd_vma addr = reloc_entry->address;
+	  bfd_vma x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
+	  asection *reloc_target_output_section;
+	  long relocation = 0;
+
+	  /* Work out which section the relocation is targetted at and the
+	     initial relocation command value.  */
+
+	  /* Get symbol value.  (Common symbols are special.)  */
+	  if (bfd_is_com_section (symbol->section))
+	    relocation = 0;
+	  else
+	    relocation = symbol->value;
+
+	  reloc_target_output_section = symbol->section->output_section;
+
+	  /* Convert input-section-relative symbol value to absolute.  */
+	  if (output_bfd)
+	    output_base = 0;
+	  else
+	    output_base = reloc_target_output_section->vma;
+
+	  relocation += output_base + symbol->section->output_offset;
+
+	  /* Add in supplied addend.  */
+	  relocation += ((reloc_entry->addend << howto->bitsize) + x);
+
+	  reloc_entry->addend = 0;
+
+	  relocation >>= (bfd_vma) howto->rightshift;
+
+	  /* Shift everything up to where it's going to be used */
+
+	  relocation <<= (bfd_vma) howto->bitpos;
+
+	  if (relocation)
+	      bfd_put_16 (abfd, relocation, (unsigned char *) data + addr);
+	}
+
+      /* If we are not producing relocateable output, return an error if
+	 the symbol is not defined.  */
+      if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
+	return bfd_reloc_undefined;
+
+      return bfd_reloc_ok;
+
+    default:
+      if (output_bfd != (bfd *) NULL)
+	{
+	  /* This is a partial relocation, and we want to apply the
+	     relocation to the reloc entry rather than the raw data.
+	     Modify the reloc inplace to reflect what we now know.  */
+
+	  reloc_entry->address += input_section->output_offset;
+	  return bfd_reloc_ok;
+	}
+      break;
+    }
+
+  if (output_bfd == (bfd *) NULL)
+    return bfd_reloc_continue;
+
+  return bfd_reloc_ok;
+}
+
+static reloc_howto_type howto_table[] = 
+{
+  HOWTO (R_PCR16L,			/* type */
+	 02,				/* rightshift */
+	 1,				/* size (0 = byte, 1 = short, 2 = long) */
+	 16,				/* bitsize */
+	 true,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_signed,	/* complain_on_overflow */
+	 m88k_special_reloc,		/* special_function */
+	 "PCR16L",			/* name */
+	 false,				/* partial_inplace */
+	 0x0000ffff,			/* src_mask */
+	 0x0000ffff,			/* dst_mask */
+	 true),				/* pcrel_offset */
+
+  HOWTO (R_PCR26L,			/* type */
+	 02,				/* rightshift */
+	 2,				/* size (0 = byte, 1 = short, 2 = long) */
+	 26,				/* bitsize */
+	 true,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_signed,	/* complain_on_overflow */
+	 m88k_special_reloc,		/* special_function */
+	 "PCR26L",			/* name */
+	 false,				/* partial_inplace */
+	 0x03ffffff,			/* src_mask */
+	 0x03ffffff,			/* dst_mask */
+	 true),				/* pcrel_offset */
+
+  HOWTO (R_VRT16,			/* type */
+	 00,				/* rightshift */
+	 1,				/* size (0 = byte, 1 = short, 2 = long) */
+	 16,				/* bitsize */
+	 false,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_bitfield,	/* complain_on_overflow */
+	 m88k_special_reloc,		/* special_function */
+	 "VRT16",			/* name */
+	 false,				/* partial_inplace */
+	 0x0000ffff,			/* src_mask */
+	 0x0000ffff,			/* dst_mask */
+	 true),				/* pcrel_offset */
+
+  HOWTO (R_HVRT16,			/* type */
+	 16,				/* rightshift */
+	 1,				/* size (0 = byte, 1 = short, 2 = long) */
+	 16,				/* bitsize */
+	 false,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 m88k_special_reloc,		/* special_function */
+	 "HVRT16",			/* name */
+	 false,				/* partial_inplace */
+	 0x0000ffff,			/* src_mask */
+	 0x0000ffff,			/* dst_mask */
+	 true),				/* pcrel_offset */
+
+  HOWTO (R_LVRT16,			/* type */
+	 00,				/* rightshift */
+	 1,				/* size (0 = byte, 1 = short, 2 = long) */
+	 16,				/* bitsize */
+	 false,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 m88k_special_reloc,		/* special_function */
+	 "LVRT16",			/* name */
+	 false,				/* partial_inplace */
+	 0x0000ffff,			/* src_mask */
+	 0x0000ffff,			/* dst_mask */
+	 true),				/* pcrel_offset */
+
+  HOWTO (R_VRT32,			/* type */
+	 00,				/* rightshift */
+	 2,				/* size (0 = byte, 1 = short, 2 = long) */
+	 32,				/* bitsize */
+	 false,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_bitfield,	/* complain_on_overflow */
+	 m88k_special_reloc,		/* special_function */
+	 "VRT32",			/* name */
+	 false,				/* partial_inplace */
+	 0xffffffff,			/* src_mask */
+	 0xffffffff,			/* dst_mask */
+	 true),				/* pcrel_offset */
+};
+
+/* Code to turn an external r_type into a pointer to an entry in the
+   above howto table.  */
+static void
+rtype2howto (cache_ptr, dst)
+     arelent *cache_ptr;
+     struct internal_reloc *dst;
+{
+  if (dst->r_type >= R_PCR16L && dst->r_type <= R_VRT32)
+    {
+      cache_ptr->howto = howto_table + dst->r_type - R_PCR16L;
+    }
+  else
+    {
+      BFD_ASSERT (0);
+    }
+}
+
+#define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst)
+
+
+/* Code to swap in the reloc offset */
+#define SWAP_IN_RELOC_OFFSET  bfd_h_get_16
+#define SWAP_OUT_RELOC_OFFSET bfd_h_put_16
+
+
+#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 (((int) 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;
+}
+
+#define BADMAG(x) MC88BADMAG(x)
+#include "coffcode.h"
+
+#undef coff_write_armap
+
+const bfd_target m88kbcs_vec =
+{
+  "coff-m88kbcs",		/* 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 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,
+};