diff options
Diffstat (limited to 'bfd/coff-z8k.c')
| -rw-r--r-- | bfd/coff-z8k.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/bfd/coff-z8k.c b/bfd/coff-z8k.c new file mode 100644 index 0000000..ab29dba --- /dev/null +++ b/bfd/coff-z8k.c @@ -0,0 +1,211 @@ +/* Zilog Z800n COFF back-end for BFD. + Copyright (C) 1992 Free Software Foundation, Inc. + 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" +#include "obstack.h" +#include "coff/z8k.h" +#include "coff/internal.h" +#include "libcoff.h" +#include "seclet.h" +extern bfd_error_vector_type bfd_error_vector; +func_da() {} +func_jr() {} + +static reloc_howto_type r_da = + HOWTO(R_DA , 0, 1, 16, false, 0, true, +true,func_da,"r_da", true, 0x0000ffff,0x0000ffff, false); + +static reloc_howto_type r_jr = + HOWTO(R_JR, 0,1,8,true,0,true,true,func_jr,"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= 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 +DEFUN(rtype2howto,(internal, dst), +arelent *internal AND +struct internal_reloc *dst) +{ + switch (dst->r_type) { + default: + printf("BAD %x\n", dst->r_type); + case R_DA: + internal->howto = &r_da; + break; + case R_JR: + internal->howto = &r_jr; + } +} + +#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) + + +/* Perform any necessaru 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 DEFUN(reloc_processing,(relent,reloc, symbols, abfd, section) , + arelent *relent AND + struct internal_reloc *reloc AND + asymbol **symbols AND + bfd *abfd AND + 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_symbol); + } + + + + relent->addend = reloc->r_offset; + + relent->address-= section->vma; +/* relent->section = 0;*/ +} + +static bfd_vma get_value(); +static +extra_case(in_abfd, seclet, reloc, data, src_ptr, dst_ptr) +bfd *in_abfd; +bfd_seclet_type *seclet; +arelent *reloc; +bfd_byte *data; +unsigned int *src_ptr; +unsigned int *dst_ptr; +{ + switch (reloc->howto->type) + { + case R_DA: + bfd_put_16(in_abfd, get_value(reloc, seclet), data+*dst_ptr); + (*dst_ptr)+=2; + ( *src_ptr)+=2; + break; + case R_JR: + { + bfd_vma dst = get_value(reloc,seclet); + bfd_vma dot = seclet->offset + + *dst_ptr + + seclet->u.indirect.section->output_section->vma; + int gap = dst - dot - 1 ; /* -1 since were in the odd byte of the + word */ + if (gap & 1) + abort(); + gap/=2; + if (gap > 128 || gap< -128) + { + bfd_error_vector.reloc_value_truncated(reloc, seclet); + } + bfd_put_8(in_abfd, gap, data+*dst_ptr); + (*dst_ptr)++; + (*src_ptr)++; + break; + } + default: + abort(); + } +} +#define EXTRA_CASES default: extra_case(in_abfd,seclet,reloc, data, &src_address, &dst_address); + + + + +#include "coffcode.h" + + +#undef coff_bfd_get_relocated_section_contents +#undef coff_bfd_relax_section +#define coff_bfd_get_relocated_section_contents bfd_coff_get_relocated_section_contents +#define coff_bfd_relax_section bfd_coff_relax_section + +bfd_target z8kcoff_vec = +{ + "coff-z8k", /* name */ + bfd_target_coff_flavour, + true, /* data byte order is big */ + true, /* header byte order is big */ + + (HAS_RELOC | EXEC_P | /* object flags */ + HAS_LINENO | HAS_DEBUG | + HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT), + + ( SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ + '/', /* ar_pad_char */ + 15, /* ar_max_namelen */ + 1, /* minimum section alignment */ +_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */ +_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_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}, + + JUMP_TABLE(coff), + COFF_SWAP_TABLE +}; |