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-rw-r--r--bfd/coff-z8k.c280
1 files changed, 280 insertions, 0 deletions
diff --git a/bfd/coff-z8k.c b/bfd/coff-z8k.c
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--- /dev/null
+++ b/bfd/coff-z8k.c
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+/* 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,
+};
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