/* BFD back-end for Apple M68K COFF A/UX 3.x files.
- Copyright 1996 Free Software Foundation, Inc.
- Portions written by Richard Henderson <rth@tamu.edu>,
- COMMON symbol munging cribbed from cf-m68klynx.c which was
- written by Cygnus Support.
+ Copyright (C) 1996-2017 Free Software Foundation, Inc.
+ Written by Richard Henderson <rth@tamu.edu>.
-This file is part of BFD, the Binary File Descriptor library.
+ 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 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 3 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.
+ 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. */
+ 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., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#define TARGET_SYM m68kaux_coff_vec
+#define TARGET_SYM m68k_coff_aux_vec
#define TARGET_NAME "coff-m68k-aux"
#ifndef TARG_AUX
/* 4k pages */
#define COFF_PAGE_SIZE 0x1000
-/* On AUX, a STYP_NOLOAD|STYP_BSS section is part of a shared library. */
+/* On AUX, a STYP_NOLOAD|STYP_BSS section is part of a shared library. */
#define BSS_NOLOAD_IS_SHARED_LIBRARY
-#define _bfd_m68kcoff_howto_table _bfd_m68kaux_howto_table
-#define _bfd_m68kcoff_rtype2howto _bfd_m68kaux_rtype2howto
-#define _bfd_m68kcoff_howto2rtype _bfd_m68kaux_howto2rtype
-#define _bfd_m68kcoff_reloc_type_lookup _bfd_m68kaux_reloc_type_lookup
+#define STATIC_RELOCS
-/* Rather than change names lots of places, reuse the same hack */
-#define LYNX_SPECIAL_FN _bfd_m68kaux_special_fn
+#define COFF_COMMON_ADDEND
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
-#ifdef ANSI_PROTOTYPES
-struct internal_reloc;
-struct coff_link_hash_entry;
-struct internal_syment;
-#endif
-
-
-static bfd_reloc_status_type _bfd_m68kaux_special_fn
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static reloc_howto_type *coff_m68k_aux_rtype_to_howto
- PARAMS ((bfd *, asection *, struct internal_reloc *,
- struct coff_link_hash_entry *, struct internal_syment *,
- bfd_vma *));
-static boolean coff_m68k_aux_link_add_one_symbol
- PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
- asection *, bfd_vma, const char *, boolean, boolean,
- struct bfd_link_hash_entry **));
-
-
-#define coff_rtype_to_howto coff_m68k_aux_rtype_to_howto
#define coff_link_add_one_symbol coff_m68k_aux_link_add_one_symbol
+static bfd_boolean
+coff_m68k_aux_link_add_one_symbol
+ (struct bfd_link_info *, bfd *, const char *, flagword, asection *,
+ bfd_vma, const char *, bfd_boolean, bfd_boolean,
+ struct bfd_link_hash_entry **);
+
+#ifndef bfd_pe_print_pdata
+#define bfd_pe_print_pdata NULL
+#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 (ptr && (reloc.r_type == R_PCRBYTE \
- || reloc.r_type == R_PCRWORD \
- || reloc.r_type == R_PCRLONG)) \
- cache_ptr->addend += asect->vma; \
- }
-
-
-
-#include "coff/aux.h" /* override coff/internal.h and coff/m68k.h */
+#include "coff/aux-coff.h" /* override coff/internal.h and coff/m68k.h */
#include "coff-m68k.c"
-
-
-/* For some reason when using m68k COFF the value stored in the .text
- section for a reference to a common symbol is the value itself plus
- any desired offset. (taken from work done by Ian Taylor, Cygnus Support,
- for I386 COFF). */
-
-/* If we are producing relocateable output, we need to do some
- adjustments to the object file that are not done by the
- bfd_perform_relocation function. This function is called by every
- reloc type to make any required adjustments. */
-
-static bfd_reloc_status_type
-_bfd_m68kaux_special_fn (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;
-{
- symvalue diff;
-
- if (output_bfd == (bfd *) NULL)
- return bfd_reloc_continue;
-
- if (bfd_is_com_section (symbol->section))
- {
- /* We are relocating a common symbol. The current value in the
- object file is ORIG + OFFSET, where ORIG is the value of the
- common symbol as seen by the object file when it was compiled
- (this may be zero if the symbol was undefined) and OFFSET is
- the offset into the common symbol (normally zero, but may be
- non-zero when referring to a field in a common structure).
- ORIG is the negative of reloc_entry->addend, which is set by
- the CALC_ADDEND macro below. We want to replace the value in
- the object file with NEW + OFFSET, where NEW is the value of
- the common symbol which we are going to put in the final
- object file. NEW is symbol->value. */
- diff = symbol->value + reloc_entry->addend;
- }
- else
- {
- /* For some reason bfd_perform_relocation always effectively
- ignores the addend for a COFF target when producing
- relocateable output. This seems to be always wrong for 386
- COFF, so we handle the addend here instead. */
- diff = reloc_entry->addend;
- }
-
-#define DOIT(x) \
- x = ((x & ~howto->dst_mask) | \
- (((x & howto->src_mask) + diff) & howto->dst_mask))
-
- if (diff != 0)
- {
- reloc_howto_type *howto = reloc_entry->howto;
- unsigned char *addr = (unsigned char *) data + reloc_entry->address;
-
- switch (howto->size)
- {
- case 0:
- {
- char x = bfd_get_8 (abfd, addr);
- DOIT (x);
- bfd_put_8 (abfd, x, addr);
- }
- break;
-
- case 1:
- {
- short x = bfd_get_16 (abfd, addr);
- DOIT (x);
- bfd_put_16 (abfd, x, addr);
- }
- break;
-
- case 2:
- {
- long x = bfd_get_32 (abfd, addr);
- DOIT (x);
- bfd_put_32 (abfd, x, addr);
- }
- break;
-
- default:
- abort ();
- }
- }
-
- /* Now let bfd_perform_relocation finish everything up. */
- return bfd_reloc_continue;
-}
-
-
-/* coff-m68k.c uses the special COFF backend linker. We need to
- adjust common symbols. */
-
-/*ARGSUSED*/
-static reloc_howto_type *
-coff_m68k_aux_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
- bfd *abfd;
- asection *sec;
- struct internal_reloc *rel;
- struct coff_link_hash_entry *h;
- struct internal_syment *sym;
- bfd_vma *addendp;
-{
- arelent relent;
- reloc_howto_type *howto;
-
- RTYPE2HOWTO (&relent, rel);
-
- howto = relent.howto;
-
- if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
- {
- /* This is a common symbol. The section contents include the
- size (sym->n_value) as an addend. The relocate_section
- function will be adding in the final value of the symbol. We
- need to subtract out the current size in order to get the
- correct result. */
- BFD_ASSERT (h != NULL);
- *addendp -= sym->n_value;
- }
-
- /* If the output symbol is common (in which case this must be a
- relocateable link), we need to add in the final size of the
- common symbol. */
- if (h != NULL && h->root.type == bfd_link_hash_common)
- *addendp += h->root.u.c.size;
-
- return howto;
-}
-
-
/* We need non-absolute symbols to override absolute symbols. This
mirrors Apple's "solution" to let a static library symbol override
a shared library symbol. On the whole not a good thing, given how
shared libraries work here, but can work if you are careful with
- what you include in the shared object. */
-
-boolean
-coff_m68k_aux_link_add_one_symbol (info, abfd, name, flags, section, value,
- string, copy, collect, hashp)
- struct bfd_link_info *info;
- bfd *abfd;
- const char *name;
- flagword flags;
- asection *section;
- bfd_vma value;
- const char *string;
- boolean copy;
- boolean collect;
- struct bfd_link_hash_entry **hashp;
+ what you include in the shared object. */
+
+static bfd_boolean
+coff_m68k_aux_link_add_one_symbol (struct bfd_link_info *info,
+ bfd *abfd,
+ const char *name,
+ flagword flags,
+ asection *section,
+ bfd_vma value,
+ const char *string,
+ bfd_boolean copy,
+ bfd_boolean collect,
+ struct bfd_link_hash_entry **hashp)
{
- struct bfd_link_hash_entry *h;
+ struct bfd_link_hash_entry *h, *inh, *t;
- if ((flags & (BSF_WARNING | BSF_CONSTRUCTOR | BSF_WEAK)) == 0 &&
- !bfd_is_und_section (section) &&
- !bfd_is_com_section (section))
+ if ((flags & (BSF_WARNING | BSF_CONSTRUCTOR | BSF_WEAK)) == 0
+ && !bfd_is_und_section (section)
+ && !bfd_is_com_section (section))
{
/* The new symbol is a definition or an indirect definition */
/* This bit copied from linker.c */
if (hashp != NULL && *hashp != NULL)
- {
- h = *hashp;
- BFD_ASSERT (strcmp (h->root.string, name) == 0);
- }
+ h = *hashp;
else
{
- h = bfd_link_hash_lookup (info->hash, name, true, copy, false);
+ h = bfd_link_hash_lookup (info->hash, name, TRUE, copy, FALSE);
if (h == NULL)
{
if (hashp != NULL)
*hashp = NULL;
- return false;
+ return FALSE;
}
}
- if (info->notice_hash != (struct bfd_hash_table *) NULL
- && (bfd_hash_lookup (info->notice_hash, name, false, false)
- != (struct bfd_hash_entry *) NULL))
- {
- if (! (*info->callbacks->notice) (info, name, abfd, section, value))
- return false;
- }
-
if (hashp != (struct bfd_link_hash_entry **) NULL)
*hashp = h;
/* end duplication from linker.c */
- if (h->type == bfd_link_hash_defined
- || h->type == bfd_link_hash_indirect)
+ t = h;
+ inh = NULL;
+ if (h->type == bfd_link_hash_indirect)
{
- asection *msec;
+ inh = h->u.i.link;
+ t = inh;
+ }
- if (h->type == bfd_link_hash_defined)
- msec = h->u.def.section;
- else
- msec = bfd_ind_section_ptr;
+ if (t->type == bfd_link_hash_defined)
+ {
+ asection *msec = t->u.def.section;
+ bfd_boolean special = FALSE;
if (bfd_is_abs_section (msec) && !bfd_is_abs_section (section))
{
- h->u.def.section = section;
- h->u.def.value = value;
- return true;
+ t->u.def.section = section;
+ t->u.def.value = value;
+ special = TRUE;
}
else if (bfd_is_abs_section (section) && !bfd_is_abs_section (msec))
- return true;
+ special = TRUE;
+
+ if (special)
+ {
+ if (info->notice_all
+ || (info->notice_hash != NULL
+ && bfd_hash_lookup (info->notice_hash, name,
+ FALSE, FALSE) != NULL))
+ {
+ if (!(*info->callbacks->notice) (info, h, inh,
+ abfd, section, value, flags))
+ return FALSE;
+ }
+
+ return TRUE;
+ }
}
}
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