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- /* BFD back-end for Hitachi Super-H COFF binaries.
- Copyright 1993, 1994 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "bfd.h"
- #include "sysdep.h"
- #include "obstack.h"
- #include "libbfd.h"
- #include "bfdlink.h"
- #include "coff/sh.h"
- #include "coff/internal.h"
- #include "libcoff.h"
-
- static bfd_reloc_status_type sh_reloc();
-
- #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
-
- static reloc_howto_type r_imm32 =
- {R_SH_IMM32, 0, 2, 32, false, 0,
- complain_overflow_bitfield, sh_reloc,"r_imm32", true, 0xffffffff,0xffffffff, false};
-
-
- /*#define SELECT_RELOC(x,y) x->howto = (&r_imm32)*/
-
-
- #define BADMAG(x) SHBADMAG(x)
- #define SH 1 /* Customize coffcode.h */
-
- #define __A_MAGIC_SET__
-
- /* Code to swap in the reloc */
- #if 0
- #define SWAP_IN_RELOC_OFFSET bfd_h_get_32
- #define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
- #endif
- #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 long
- get_symbol_value (symbol)
- asymbol *symbol;
- {
- long relocation = 0;
-
- if (bfd_is_com_section (symbol->section))
- {
- relocation = 0;
- }
- else
- {
- relocation = symbol->value +
- symbol->section->output_section->vma +
- symbol->section->output_offset;
- }
-
- return(relocation);
- }
-
- #define RTYPE2HOWTO(x,y) ((x)->howto = &r_imm32)
-
- /* Perform any necessaru magic to the addend in a reloc entry */
-
- #if 0
- #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
- cache_ptr->addend = ext_reloc.r_offset;
-
- #endif
-
-
- /* Compute the addend of a reloc. If the reloc is to a common symbol,
- the object file contains the value of the common symbol. By the
- time this is called, the linker may be using a different symbol
- from a different object file with a different value. Therefore, we
- hack wildly to locate the original symbol from this file so that we
- can make the correct adjustment. This macro sets coffsym to the
- symbol from the original file, and uses it to set the addend value
- correctly. If this is not a common symbol, the usual addend
- calculation is done, except that an additional tweak is needed for
- PC relative relocs.
- FIXME: This macro refers to symbols and asect; these are from the
- calling function, not the macro arguments. */
-
- #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
- { \
- coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
- if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
- coffsym = (obj_symbols (abfd) \
- + (cache_ptr->sym_ptr_ptr - symbols)); \
- else if (ptr) \
- coffsym = coff_symbol_from (abfd, ptr); \
- if (coffsym != (coff_symbol_type *) NULL \
- && coffsym->native->u.syment.n_scnum == 0) \
- cache_ptr->addend = - coffsym->native->u.syment.n_value; \
- else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
- && ptr->section != (asection *) NULL) \
- cache_ptr->addend = - (ptr->section->vma + ptr->value); \
- else \
- cache_ptr->addend = 0; \
- }
-
- #if 0
- #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
- reloc_processing(relent, reloc, symbols, abfd, section)
- #endif
-
- /* this function is in charge of performing all the 29k relocations */
-
- static bfd_reloc_status_type
- sh_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
- error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol_in;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
- {
- /* the consth relocation comes in two parts, we have to remember
- the state between calls, in these variables */
- unsigned long insn;
- unsigned long sym_value;
- unsigned short r_type;
-
- unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/
- bfd_byte *hit_data =addr + (bfd_byte *)(data);
-
- r_type = reloc_entry->howto->type;
-
- if (output_bfd) {
- /* Partial linking - do nothing */
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
-
- if (symbol_in != NULL
- && bfd_is_und_section (symbol_in->section))
- {
- /* Keep the state machine happy in case we're called again */
- return (bfd_reloc_undefined);
- }
-
-
- sym_value = get_symbol_value(symbol_in);
-
- switch (r_type)
- {
- case R_SH_IMM32:
- /* We ignore the previous contents ! */
- insn = sym_value + reloc_entry->addend;
- bfd_put_32(abfd, insn, hit_data);
- break;
- default:
- *error_message = "Unrecognized reloc";
- return (bfd_reloc_dangerous);
- }
-
-
- return(bfd_reloc_ok);
- }
-
- /* The reloc processing routine for the optimized COFF linker. */
-
- static boolean
- coff_sh_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, syms, sections)
- bfd *output_bfd;
- struct bfd_link_info *info;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- struct internal_reloc *relocs;
- struct internal_syment *syms;
- asection **sections;
- {
- struct internal_reloc *rel;
- struct internal_reloc *relend;
-
- /* If we are performing a relocateable link, we don't need to do a
- thing. The caller will take care of adjusting the reloc
- addresses and symbol indices. */
- if (info->relocateable)
- return true;
-
-
- rel = relocs;
- relend = rel + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- long symndx;
- bfd_byte *loc;
- struct coff_link_hash_entry *h;
- struct internal_syment *sym;
- asection *sec;
- bfd_vma val;
-
- symndx = rel->r_symndx;
- loc = contents + rel->r_vaddr - input_section->vma;
-
- if (symndx == -1)
- h = NULL;
- else
- h = obj_coff_sym_hashes (input_bfd)[symndx];
-
- sym = NULL;
- sec = NULL;
- val = 0;
-
-
- if (h == NULL)
- {
- if (symndx == -1)
- sec = bfd_abs_section_ptr;
- else
- {
- sym = syms + symndx;
- sec = sections[symndx];
- val = (sec->output_section->vma
- + sec->output_offset
- + sym->n_value
- - sec->vma
- - sec->vma);
- }
- }
- else
- {
- if (h->root.type == bfd_link_hash_defined)
- {
- sec = h->root.u.def.section;
- val = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else
- {
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd, input_section,
- rel->r_vaddr - input_section->vma)))
- return false;
- }
- }
-
- switch (rel->r_type)
- {
- default:
- bfd_set_error (bfd_error_bad_value);
- return false;
-
- case R_SH_IMM32:
- {
- long x = bfd_get_32 (input_bfd, loc);
- x += val;
- bfd_put_32 (input_bfd, x, loc);
-
- }
-
- break;
- }
- }
-
- return true;
- }
-
- #if 0
- static void
- reloc_processing (relent, reloc, symbols, abfd, section)
- arelent * relent;
- struct internal_reloc *reloc;
- asymbol ** symbols;
- bfd * abfd;
- asection * section;
- {
- asymbol *ptr;
- relent->address = reloc->r_vaddr;
- relent->howto = &r_imm32;
-
-
- relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx];
-
- ptr = *(relent->sym_ptr_ptr);
-
- if (ptr
- && bfd_asymbol_bfd(ptr) == abfd
-
- && ((ptr->flags & BSF_OLD_COMMON)== 0))
- {
- relent->addend = 0;
- }
- else
- {
- relent->addend = 0;
- }
- relent->address-= section->vma;
-
- }
- #endif
-
- #define coff_relocate_section coff_sh_relocate_section
-
- #include "coffcode.h"
-
- const bfd_target shcoff_vec =
- {
- "coff-sh", /* 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 | WP_TEXT | BFD_IS_RELAXABLE ),
-
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
- '_', /* leading symbol underscore */
- '/', /* ar_pad_char */
- 15, /* ar_max_namelen */
- 2, /* minimum section alignment */
- 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,
- };
-
-