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252b5132 | 1 | /* BFD back-end for Zilog Z800n COFF binaries. |
7898deda NC |
2 | Copyright 1992, 1993, 1994, 1995, 1997, 1999, 2000 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | Contributed by Cygnus Support. |
5 | Written by Steve Chamberlain, <sac@cygnus.com>. | |
6 | ||
7 | This file is part of BFD, the Binary File Descriptor library. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "bfd.h" | |
24 | #include "sysdep.h" | |
25 | #include "libbfd.h" | |
26 | #include "bfdlink.h" | |
27 | #include "coff/z8k.h" | |
28 | #include "coff/internal.h" | |
29 | #include "libcoff.h" | |
30 | ||
31 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) | |
32 | ||
33 | static reloc_howto_type r_imm32 = | |
34 | HOWTO (R_IMM32, 0, 1, 32, false, 0, | |
35 | complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, | |
36 | 0xffffffff, false); | |
37 | ||
38 | static reloc_howto_type r_imm4l = | |
39 | HOWTO (R_IMM4L, 0, 1, 4, false, 0, | |
40 | complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false); | |
41 | ||
42 | static reloc_howto_type r_da = | |
43 | HOWTO (R_IMM16, 0, 1, 16, false, 0, | |
44 | complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff, | |
45 | false); | |
46 | ||
47 | static reloc_howto_type r_imm8 = | |
48 | HOWTO (R_IMM8, 0, 1, 8, false, 0, | |
49 | complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, | |
50 | false); | |
51 | ||
52 | static reloc_howto_type r_jr = | |
53 | HOWTO (R_JR, 0, 1, 8, true, 0, complain_overflow_signed, 0, | |
54 | "r_jr", true, 0, 0, true); | |
55 | ||
56 | /* Turn a howto into a reloc number */ | |
57 | ||
cbfe05c4 | 58 | static int |
252b5132 RH |
59 | coff_z8k_select_reloc (howto) |
60 | reloc_howto_type *howto; | |
61 | { | |
62 | return howto->type; | |
63 | } | |
64 | ||
65 | #define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto) | |
66 | ||
252b5132 RH |
67 | #define BADMAG(x) Z8KBADMAG(x) |
68 | #define Z8K 1 /* Customize coffcode.h */ | |
69 | #define __A_MAGIC_SET__ | |
70 | ||
252b5132 RH |
71 | /* Code to swap in the reloc */ |
72 | #define SWAP_IN_RELOC_OFFSET bfd_h_get_32 | |
73 | #define SWAP_OUT_RELOC_OFFSET bfd_h_put_32 | |
74 | #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ | |
75 | dst->r_stuff[0] = 'S'; \ | |
76 | dst->r_stuff[1] = 'C'; | |
77 | ||
78 | /* Code to turn a r_type into a howto ptr, uses the above howto table | |
79 | */ | |
80 | ||
81 | static void | |
82 | rtype2howto (internal, dst) | |
83 | arelent * internal; | |
84 | struct internal_reloc *dst; | |
85 | { | |
86 | switch (dst->r_type) | |
87 | { | |
88 | default: | |
89 | abort (); | |
90 | break; | |
91 | case R_IMM8: | |
92 | internal->howto = &r_imm8; | |
93 | break; | |
94 | case R_IMM16: | |
95 | internal->howto = &r_da; | |
96 | break; | |
97 | case R_JR: | |
98 | internal->howto = &r_jr; | |
99 | break; | |
100 | case R_IMM32: | |
101 | internal->howto = &r_imm32; | |
102 | break; | |
103 | case R_IMM4L: | |
104 | internal->howto = &r_imm4l; | |
105 | break; | |
106 | } | |
107 | } | |
108 | ||
109 | #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) | |
110 | ||
252b5132 RH |
111 | /* Perform any necessary magic to the addend in a reloc entry */ |
112 | ||
252b5132 RH |
113 | #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ |
114 | cache_ptr->addend = ext_reloc.r_offset; | |
115 | ||
252b5132 RH |
116 | #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ |
117 | reloc_processing(relent, reloc, symbols, abfd, section) | |
118 | ||
cbfe05c4 | 119 | static void |
252b5132 RH |
120 | reloc_processing (relent, reloc, symbols, abfd, section) |
121 | arelent * relent; | |
122 | struct internal_reloc *reloc; | |
123 | asymbol ** symbols; | |
124 | bfd * abfd; | |
125 | asection * section; | |
126 | { | |
127 | relent->address = reloc->r_vaddr; | |
128 | rtype2howto (relent, reloc); | |
129 | ||
130 | if (reloc->r_symndx > 0) | |
131 | { | |
132 | relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; | |
133 | } | |
134 | else | |
135 | { | |
136 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
137 | } | |
138 | ||
252b5132 RH |
139 | relent->addend = reloc->r_offset; |
140 | relent->address -= section->vma; | |
141 | } | |
142 | ||
143 | static void | |
144 | extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr) | |
145 | bfd *in_abfd; | |
146 | struct bfd_link_info *link_info; | |
147 | struct bfd_link_order *link_order; | |
148 | arelent *reloc; | |
149 | bfd_byte *data; | |
150 | unsigned int *src_ptr; | |
151 | unsigned int *dst_ptr; | |
152 | { | |
153 | asection *input_section = link_order->u.indirect.section; | |
154 | ||
155 | switch (reloc->howto->type) | |
156 | { | |
157 | case R_IMM8: | |
158 | bfd_put_8 (in_abfd, | |
159 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
160 | data + *dst_ptr); | |
161 | (*dst_ptr) += 1; | |
162 | (*src_ptr) += 1; | |
163 | break; | |
164 | ||
165 | case R_IMM32: | |
166 | bfd_put_32 (in_abfd, | |
167 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
168 | data + *dst_ptr); | |
169 | (*dst_ptr) += 4; | |
170 | (*src_ptr) += 4; | |
171 | break; | |
172 | ||
173 | case R_IMM4L: | |
174 | bfd_put_8 (in_abfd, | |
cbfe05c4 | 175 | ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0) |
252b5132 RH |
176 | | (0x0f |
177 | & bfd_coff_reloc16_get_value (reloc, link_info, | |
178 | input_section))), | |
179 | data + *dst_ptr); | |
180 | (*dst_ptr) += 1; | |
181 | (*src_ptr) += 1; | |
182 | break; | |
183 | ||
184 | case R_IMM16: | |
185 | bfd_put_16 (in_abfd, | |
186 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
187 | data + *dst_ptr); | |
188 | (*dst_ptr) += 2; | |
189 | (*src_ptr) += 2; | |
190 | break; | |
191 | ||
192 | case R_JR: | |
193 | { | |
194 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
195 | input_section); | |
196 | bfd_vma dot = (link_order->offset | |
197 | + *dst_ptr | |
198 | + input_section->output_section->vma); | |
199 | int gap = dst - dot - 1;/* -1 since were in the odd byte of the | |
200 | word and the pc's been incremented */ | |
201 | ||
202 | if (gap & 1) | |
203 | abort (); | |
204 | gap /= 2; | |
205 | if (gap > 128 || gap < -128) | |
206 | { | |
207 | if (! ((*link_info->callbacks->reloc_overflow) | |
208 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
209 | reloc->howto->name, reloc->addend, input_section->owner, | |
210 | input_section, reloc->address))) | |
211 | abort (); | |
212 | } | |
213 | bfd_put_8 (in_abfd, gap, data + *dst_ptr); | |
214 | (*dst_ptr)++; | |
215 | (*src_ptr)++; | |
216 | break; | |
217 | } | |
218 | default: | |
219 | abort (); | |
220 | } | |
221 | } | |
222 | ||
223 | #define coff_reloc16_extra_cases extra_case | |
224 | ||
225 | #include "coffcode.h" | |
226 | ||
252b5132 RH |
227 | #undef coff_bfd_get_relocated_section_contents |
228 | #undef coff_bfd_relax_section | |
229 | #define coff_bfd_get_relocated_section_contents \ | |
230 | bfd_coff_reloc16_get_relocated_section_contents | |
231 | #define coff_bfd_relax_section bfd_coff_reloc16_relax_section | |
232 | ||
c3c89269 | 233 | CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL) |