1 /* BFD back-end for Zilog Z800n COFF binaries.
2 Copyright 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003
3 Free Software Foundation, Inc.
4 Contributed by Cygnus Support.
5 Written by Steve Chamberlain, <sac@cygnus.com>.
7 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
28 #include "coff/internal.h"
31 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
33 static reloc_howto_type r_imm32 =
34 HOWTO (R_IMM32, 0, 2, 32, FALSE, 0,
35 complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff,
38 static reloc_howto_type r_imm4l =
39 HOWTO (R_IMM4L, 0, 0, 4, FALSE, 0,
40 complain_overflow_bitfield, 0, "r_imm4l", TRUE, 0xf, 0xf, FALSE);
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,
47 static reloc_howto_type r_imm8 =
48 HOWTO (R_IMM8, 0, 0, 8, FALSE, 0,
49 complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff,
52 static reloc_howto_type r_rel16 =
53 HOWTO (R_REL16, 0, 1, 16, FALSE, 0,
54 complain_overflow_bitfield, 0, "r_rel16", TRUE, 0x0000ffff, 0x0000ffff,
57 static reloc_howto_type r_jr =
58 HOWTO (R_JR, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,
59 "r_jr", TRUE, 0, 0, TRUE);
61 static reloc_howto_type r_disp7 =
62 HOWTO (R_DISP7, 0, 0, 7, TRUE, 0, complain_overflow_bitfield, 0,
63 "r_disp7", TRUE, 0, 0, TRUE);
65 static reloc_howto_type r_callr =
66 HOWTO (R_CALLR, 0, 1, 12, TRUE, 0, complain_overflow_signed, 0,
67 "r_callr", TRUE, 0xfff, 0xfff, TRUE);
69 /* Turn a howto into a reloc number */
72 coff_z8k_select_reloc (reloc_howto_type *howto)
77 #define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto)
79 #define BADMAG(x) Z8KBADMAG(x)
80 #define Z8K 1 /* Customize coffcode.h */
81 #define __A_MAGIC_SET__
83 /* Code to swap in the reloc. */
84 #define SWAP_IN_RELOC_OFFSET H_GET_32
85 #define SWAP_OUT_RELOC_OFFSET H_PUT_32
86 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
87 dst->r_stuff[0] = 'S'; \
88 dst->r_stuff[1] = 'C';
90 /* Code to turn a r_type into a howto ptr, uses the above howto table. */
93 rtype2howto (arelent *internal, struct internal_reloc *dst)
101 internal->howto = &r_imm8;
104 internal->howto = &r_da;
107 internal->howto = &r_jr;
110 internal->howto = &r_disp7;
113 internal->howto = &r_callr;
116 internal->howto = &r_rel16;
119 internal->howto = &r_imm32;
122 internal->howto = &r_imm4l;
127 #define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)
129 /* Perform any necessary magic to the addend in a reloc entry. */
131 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
132 cache_ptr->addend = ext_reloc.r_offset;
134 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
135 reloc_processing(relent, reloc, symbols, abfd, section)
138 reloc_processing (arelent *relent,
139 struct internal_reloc *reloc,
144 relent->address = reloc->r_vaddr;
145 rtype2howto (relent, reloc);
147 if (reloc->r_symndx > 0)
148 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
150 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
152 relent->addend = reloc->r_offset;
153 relent->address -= section->vma;
157 extra_case (bfd *in_abfd,
158 struct bfd_link_info *link_info,
159 struct bfd_link_order *link_order,
162 unsigned int *src_ptr,
163 unsigned int *dst_ptr)
165 asection * input_section = link_order->u.indirect.section;
167 switch (reloc->howto->type)
171 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
178 /* If no flags are set, assume immediate value. */
179 if (! (*reloc->sym_ptr_ptr)->section->flags)
182 bfd_coff_reloc16_get_value (reloc, link_info,
188 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
190 /* Addresses are 23 bit, and the layout of those in a 32-bit
192 1AAAAAAA xxxxxxxx AAAAAAAA AAAAAAAA
193 (A - address bits, x - ignore). */
194 dst = (dst & 0xffff) | ((dst & 0xff0000) << 8) | 0x80000000;
195 bfd_put_32 (in_abfd, dst, data + *dst_ptr);
203 ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0)
205 & bfd_coff_reloc16_get_value (reloc, link_info,
214 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
222 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
224 bfd_vma dot = (link_order->offset
226 + input_section->output_section->vma);
227 int gap = dst - dot - 1; /* -1, since we're in the odd byte of the
228 word and the pc's been incremented. */
233 if (gap > 128 || gap < -128)
235 if (! ((*link_info->callbacks->reloc_overflow)
236 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
237 reloc->howto->name, reloc->addend, input_section->owner,
238 input_section, reloc->address)))
241 bfd_put_8 (in_abfd, gap, data + *dst_ptr);
249 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
251 bfd_vma dot = (link_order->offset
253 + input_section->output_section->vma);
254 int gap = dst - dot - 1; /* -1, since we're in the odd byte of the
255 word and the pc's been incremented. */
261 if (gap > 0 || gap < -127)
263 if (! ((*link_info->callbacks->reloc_overflow)
264 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
265 reloc->howto->name, reloc->addend, input_section->owner,
266 input_section, reloc->address)))
270 (bfd_get_8 ( in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f),
279 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
281 bfd_vma dot = (link_order->offset
283 + input_section->output_section->vma);
284 int gap = dst - dot - 2;
288 if (gap > 4096 || gap < -4095)
290 if (! ((*link_info->callbacks->reloc_overflow)
291 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
292 reloc->howto->name, reloc->addend, input_section->owner,
293 input_section, reloc->address)))
298 (bfd_get_16 ( in_abfd, data + *dst_ptr) & 0xf000) | (-gap & 0x0fff),
307 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
309 bfd_vma dot = (link_order->offset
311 + input_section->output_section->vma);
312 int gap = dst - dot - 2;
314 if (gap > 32767 || gap < -32768)
316 if (! ((*link_info->callbacks->reloc_overflow)
317 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
318 reloc->howto->name, reloc->addend, input_section->owner,
319 input_section, reloc->address)))
322 bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
333 #define coff_reloc16_extra_cases extra_case
335 #include "coffcode.h"
337 #undef coff_bfd_get_relocated_section_contents
338 #undef coff_bfd_relax_section
339 #define coff_bfd_get_relocated_section_contents \
340 bfd_coff_reloc16_get_relocated_section_contents
341 #define coff_bfd_relax_section bfd_coff_reloc16_relax_section
343 CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL, COFF_SWAP_TABLE)