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8ad2a31d SC |
1 | /* Zilog Z800n COFF back-end for BFD. |
2 | Copyright (C) 1992 Free Software Foundation, Inc. | |
3 | Written by Steve Chamberlain | |
4 | sac@cygnus.com | |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
21 | ||
22 | ||
23 | #include "bfd.h" | |
24 | #include "sysdep.h" | |
25 | #include "libbfd.h" | |
26 | #include "obstack.h" | |
27 | #include "coff/z8k.h" | |
28 | #include "coff/internal.h" | |
29 | #include "libcoff.h" | |
30 | #include "seclet.h" | |
294eaca4 | 31 | |
8ad2a31d | 32 | extern bfd_error_vector_type bfd_error_vector; |
294eaca4 SC |
33 | |
34 | /* Dummy for now */ | |
35 | static bfd_reloc_status_type | |
36 | DEFUN(func_da, (abfd, reloc_entry, symbol, data, input_section, output_bfd), | |
37 | bfd *abfd AND | |
38 | arelent *reloc_entry AND | |
39 | struct symbol_cache_entry *symbol AND | |
40 | PTR data AND | |
41 | asection *input_section AND | |
42 | bfd *output_bfd) | |
43 | { | |
44 | } | |
45 | ||
46 | /* Dummy for now */ | |
47 | static bfd_reloc_status_type | |
48 | DEFUN(func_jr, (abfd, reloc_entry, symbol, data, input_section, output_bfd), | |
49 | bfd *abfd AND | |
50 | arelent *reloc_entry AND | |
51 | struct symbol_cache_entry *symbol AND | |
52 | PTR data AND | |
53 | asection *input_section AND | |
54 | bfd *output_bfd) | |
55 | { | |
56 | } | |
8ad2a31d SC |
57 | |
58 | static reloc_howto_type r_da = | |
59 | HOWTO(R_DA , 0, 1, 16, false, 0, true, | |
60 | true,func_da,"r_da", true, 0x0000ffff,0x0000ffff, false); | |
61 | ||
62 | static reloc_howto_type r_jr = | |
63 | HOWTO(R_JR, 0,1,8,true,0,true,true,func_jr,"r_jr", true,0,0,true); | |
64 | ||
65 | ||
66 | ||
67 | ||
68 | ||
69 | /* Turn a howto into a reloc number */ | |
70 | ||
71 | static int coff_z8k_select_reloc(howto) | |
72 | reloc_howto_type *howto; | |
73 | { | |
74 | return howto->type; | |
75 | } | |
76 | #define SELECT_RELOC(x,howto) x= coff_z8k_select_reloc(howto) | |
77 | ||
78 | ||
79 | #define BADMAG(x) Z8KBADMAG(x) | |
80 | #define Z8K 1 /* Customize coffcode.h */ | |
81 | #define __A_MAGIC_SET__ | |
82 | ||
83 | ||
84 | ||
85 | /* Code to swap in the reloc */ | |
86 | #define SWAP_IN_RELOC_OFFSET bfd_h_get_32 | |
87 | #define SWAP_OUT_RELOC_OFFSET bfd_h_put_32 | |
88 | #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ | |
89 | dst->r_stuff[0] = 'S'; \ | |
90 | dst->r_stuff[1] = 'C'; | |
91 | ||
92 | /* Code to turn a r_type into a howto ptr, uses the above howto table | |
93 | */ | |
94 | ||
95 | static void | |
96 | DEFUN(rtype2howto,(internal, dst), | |
97 | arelent *internal AND | |
98 | struct internal_reloc *dst) | |
99 | { | |
100 | switch (dst->r_type) { | |
101 | default: | |
102 | printf("BAD %x\n", dst->r_type); | |
103 | case R_DA: | |
104 | internal->howto = &r_da; | |
105 | break; | |
106 | case R_JR: | |
107 | internal->howto = &r_jr; | |
108 | } | |
109 | } | |
110 | ||
111 | #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) | |
112 | ||
113 | ||
114 | /* Perform any necessaru magic to the addend in a reloc entry */ | |
115 | ||
116 | ||
117 | #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ | |
118 | cache_ptr->addend = ext_reloc.r_offset; | |
119 | ||
120 | ||
121 | #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ | |
122 | reloc_processing(relent, reloc, symbols, abfd, section) | |
123 | ||
124 | static void DEFUN(reloc_processing,(relent,reloc, symbols, abfd, section) , | |
125 | arelent *relent AND | |
126 | struct internal_reloc *reloc AND | |
127 | asymbol **symbols AND | |
128 | bfd *abfd AND | |
129 | asection *section) | |
130 | { | |
131 | relent->address = reloc->r_vaddr; | |
132 | rtype2howto(relent,reloc); | |
133 | ||
134 | if (reloc->r_symndx > 0) | |
135 | { | |
136 | ||
137 | relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx]; | |
138 | ||
139 | } | |
140 | else | |
141 | { | |
142 | relent->sym_ptr_ptr = &(bfd_abs_symbol); | |
143 | } | |
144 | ||
145 | ||
146 | ||
147 | relent->addend = reloc->r_offset; | |
148 | ||
149 | relent->address-= section->vma; | |
150 | /* relent->section = 0;*/ | |
151 | } | |
152 | ||
153 | static bfd_vma get_value(); | |
5f9ca960 JG |
154 | |
155 | static void | |
8ad2a31d | 156 | extra_case(in_abfd, seclet, reloc, data, src_ptr, dst_ptr) |
5f9ca960 JG |
157 | bfd *in_abfd; |
158 | bfd_seclet_type *seclet; | |
159 | arelent *reloc; | |
160 | bfd_byte *data; | |
161 | unsigned int *src_ptr; | |
162 | unsigned int *dst_ptr; | |
8ad2a31d SC |
163 | { |
164 | switch (reloc->howto->type) | |
165 | { | |
166 | case R_DA: | |
167 | bfd_put_16(in_abfd, get_value(reloc, seclet), data+*dst_ptr); | |
168 | (*dst_ptr)+=2; | |
169 | ( *src_ptr)+=2; | |
170 | break; | |
171 | case R_JR: | |
172 | { | |
173 | bfd_vma dst = get_value(reloc,seclet); | |
174 | bfd_vma dot = seclet->offset | |
175 | + *dst_ptr | |
176 | + seclet->u.indirect.section->output_section->vma; | |
177 | int gap = dst - dot - 1 ; /* -1 since were in the odd byte of the | |
178 | word */ | |
179 | if (gap & 1) | |
180 | abort(); | |
181 | gap/=2; | |
182 | if (gap > 128 || gap< -128) | |
183 | { | |
184 | bfd_error_vector.reloc_value_truncated(reloc, seclet); | |
185 | } | |
186 | bfd_put_8(in_abfd, gap, data+*dst_ptr); | |
187 | (*dst_ptr)++; | |
188 | (*src_ptr)++; | |
189 | break; | |
190 | } | |
191 | default: | |
192 | abort(); | |
193 | } | |
194 | } | |
195 | #define EXTRA_CASES default: extra_case(in_abfd,seclet,reloc, data, &src_address, &dst_address); | |
196 | ||
197 | ||
198 | ||
199 | ||
200 | #include "coffcode.h" | |
201 | ||
202 | ||
203 | #undef coff_bfd_get_relocated_section_contents | |
204 | #undef coff_bfd_relax_section | |
205 | #define coff_bfd_get_relocated_section_contents bfd_coff_get_relocated_section_contents | |
206 | #define coff_bfd_relax_section bfd_coff_relax_section | |
207 | ||
208 | bfd_target z8kcoff_vec = | |
209 | { | |
294eaca4 | 210 | "coff-z8k", /* name */ |
8ad2a31d SC |
211 | bfd_target_coff_flavour, |
212 | true, /* data byte order is big */ | |
213 | true, /* header byte order is big */ | |
214 | ||
215 | (HAS_RELOC | EXEC_P | /* object flags */ | |
216 | HAS_LINENO | HAS_DEBUG | | |
217 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT), | |
218 | ||
219 | ( SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
294eaca4 | 220 | '_', /* leading symbol underscore */ |
8ad2a31d SC |
221 | '/', /* ar_pad_char */ |
222 | 15, /* ar_max_namelen */ | |
223 | 1, /* minimum section alignment */ | |
294eaca4 SC |
224 | _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */ |
225 | _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */ | |
226 | ||
227 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ | |
228 | bfd_generic_archive_p, _bfd_dummy_target}, | |
229 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ | |
230 | bfd_false}, | |
231 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ | |
232 | _bfd_write_archive_contents, bfd_false}, | |
233 | ||
234 | JUMP_TABLE(coff), | |
235 | COFF_SWAP_TABLE | |
236 | }; |