1 /* BFD back-end for Apple M68K COFF A/UX 3.x files.
2 Copyright 1996, 1997, 2000, 2002 Free Software Foundation, Inc.
3 Written by Richard Henderson <rth@tamu.edu>.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
21 #define TARGET_SYM m68kaux_coff_vec
22 #define TARGET_NAME "coff-m68k-aux"
23
24 #ifndef TARG_AUX
25 #define TARG_AUX
26 #endif
27
28 #define COFF_LONG_FILENAMES
29
30 /* 4k pages */
31 #define COFF_PAGE_SIZE 0x1000
32
33 /* On AUX, a STYP_NOLOAD|STYP_BSS section is part of a shared library. */
34 #define BSS_NOLOAD_IS_SHARED_LIBRARY
35
36 #define STATIC_RELOCS
37
38 #define COFF_COMMON_ADDEND
39
40 #include "bfd.h"
41 #include "sysdep.h"
42
43 static bfd_boolean coff_m68k_aux_link_add_one_symbol
44 PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
45 asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
46 struct bfd_link_hash_entry **));
47
48 #define coff_link_add_one_symbol coff_m68k_aux_link_add_one_symbol
49
50 #include "coff/aux-coff.h" /* override coff/internal.h and coff/m68k.h */
51 #include "coff-m68k.c"
52
53 /* We need non-absolute symbols to override absolute symbols. This
54 mirrors Apple's "solution" to let a static library symbol override
55 a shared library symbol. On the whole not a good thing, given how
56 shared libraries work here, but can work if you are careful with
57 what you include in the shared object. */
58
59 static bfd_boolean
coff_m68k_aux_link_add_one_symbol(info,abfd,name,flags,section,value,string,copy,collect,hashp)60 coff_m68k_aux_link_add_one_symbol (info, abfd, name, flags, section, value,
61 string, copy, collect, hashp)
62 struct bfd_link_info *info;
63 bfd *abfd;
64 const char *name;
65 flagword flags;
66 asection *section;
67 bfd_vma value;
68 const char *string;
69 bfd_boolean copy;
70 bfd_boolean collect;
71 struct bfd_link_hash_entry **hashp;
72 {
73 struct bfd_link_hash_entry *h;
74
75 if ((flags & (BSF_WARNING | BSF_CONSTRUCTOR | BSF_WEAK)) == 0 &&
76 !bfd_is_und_section (section) &&
77 !bfd_is_com_section (section))
78 {
79 /* The new symbol is a definition or an indirect definition */
80
81 /* This bit copied from linker.c */
82 if (hashp != NULL && *hashp != NULL)
83 {
84 h = *hashp;
85 BFD_ASSERT (strcmp (h->root.string, name) == 0);
86 }
87 else
88 {
89 h = bfd_link_hash_lookup (info->hash, name, TRUE, copy, FALSE);
90 if (h == NULL)
91 {
92 if (hashp != NULL)
93 *hashp = NULL;
94 return FALSE;
95 }
96 }
97
98 if (info->notice_hash != (struct bfd_hash_table *) NULL
99 && (bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE)
100 != (struct bfd_hash_entry *) NULL))
101 {
102 if (! (*info->callbacks->notice) (info, name, abfd, section, value))
103 return FALSE;
104 }
105
106 if (hashp != (struct bfd_link_hash_entry **) NULL)
107 *hashp = h;
108 /* end duplication from linker.c */
109
110 if (h->type == bfd_link_hash_defined
111 || h->type == bfd_link_hash_indirect)
112 {
113 asection *msec;
114
115 if (h->type == bfd_link_hash_defined)
116 msec = h->u.def.section;
117 else
118 msec = bfd_ind_section_ptr;
119
120 if (bfd_is_abs_section (msec) && !bfd_is_abs_section (section))
121 {
122 h->u.def.section = section;
123 h->u.def.value = value;
124 return TRUE;
125 }
126 else if (bfd_is_abs_section (section) && !bfd_is_abs_section (msec))
127 return TRUE;
128 }
129 }
130
131 /* If we didn't exit early, finish processing in the generic routine */
132 return _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section,
133 value, string, copy, collect,
134 hashp);
135 }
136