1 /* BFD back-end for Zilog Z800n COFF binaries.
2 Copyright 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002
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 static void extra_case PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *));
32 static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
33 static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
34 static int coff_z8k_select_reloc PARAMS ((reloc_howto_type *));
36 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
38 static reloc_howto_type r_imm32 =
39 HOWTO (R_IMM32, 0, 2, 32, FALSE, 0,
40 complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff,
43 static reloc_howto_type r_imm4l =
44 HOWTO (R_IMM4L, 0, 0, 4, FALSE, 0,
45 complain_overflow_bitfield, 0, "r_imm4l", TRUE, 0xf, 0xf, FALSE);
47 static reloc_howto_type r_da =
48 HOWTO (R_IMM16, 0, 1, 16, FALSE, 0,
49 complain_overflow_bitfield, 0, "r_da", TRUE, 0x0000ffff, 0x0000ffff,
52 static reloc_howto_type r_imm8 =
53 HOWTO (R_IMM8, 0, 0, 8, FALSE, 0,
54 complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff,
57 static reloc_howto_type r_rel16 =
58 HOWTO (R_REL16, 0, 1, 16, FALSE, 0,
59 complain_overflow_bitfield, 0, "r_rel16", TRUE, 0x0000ffff, 0x0000ffff,
62 static reloc_howto_type r_jr =
63 HOWTO (R_JR, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,
64 "r_jr", TRUE, 0, 0, TRUE);
66 static reloc_howto_type r_disp7 =
67 HOWTO (R_DISP7, 0, 0, 7, TRUE, 0, complain_overflow_bitfield, 0,
68 "r_disp7", TRUE, 0, 0, TRUE);
70 static reloc_howto_type r_callr =
71 HOWTO (R_CALLR, 0, 1, 12, TRUE, 0, complain_overflow_signed, 0,
72 "r_callr", TRUE, 0xfff, 0xfff, TRUE);
74 /* Turn a howto into a reloc number */
77 coff_z8k_select_reloc (howto)
78 reloc_howto_type *howto;
83 #define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto)
85 #define BADMAG(x) Z8KBADMAG(x)
86 #define Z8K 1 /* Customize coffcode.h */
87 #define __A_MAGIC_SET__
89 /* Code to swap in the reloc. */
90 #define SWAP_IN_RELOC_OFFSET H_GET_32
91 #define SWAP_OUT_RELOC_OFFSET H_PUT_32
92 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
93 dst->r_stuff[0] = 'S'; \
94 dst->r_stuff[1] = 'C';
96 /* Code to turn a r_type into a howto ptr, uses the above howto table. */
99 rtype2howto (internal, dst)
101 struct internal_reloc *dst;
109 internal->howto = &r_imm8;
112 internal->howto = &r_da;
115 internal->howto = &r_jr;
118 internal->howto = &r_disp7;
121 internal->howto = &r_callr;
124 internal->howto = &r_rel16;
127 internal->howto = &r_imm32;
130 internal->howto = &r_imm4l;
135 #define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)
137 /* Perform any necessary magic to the addend in a reloc entry. */
139 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
140 cache_ptr->addend = ext_reloc.r_offset;
142 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
143 reloc_processing(relent, reloc, symbols, abfd, section)
146 reloc_processing (relent, reloc, symbols, abfd, section)
148 struct internal_reloc * reloc;
153 relent->address = reloc->r_vaddr;
154 rtype2howto (relent, reloc);
156 if (reloc->r_symndx > 0)
157 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
159 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
161 relent->addend = reloc->r_offset;
162 relent->address -= section->vma;
166 extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
168 struct bfd_link_info * link_info;
169 struct bfd_link_order * link_order;
172 unsigned int * src_ptr;
173 unsigned int * dst_ptr;
175 asection * input_section = link_order->u.indirect.section;
177 switch (reloc->howto->type)
181 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
188 /* If no flags are set, assume immediate value. */
189 if (! (*reloc->sym_ptr_ptr)->section->flags)
192 bfd_coff_reloc16_get_value (reloc, link_info,
198 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
200 /* Adresses are 23 bit, and the layout of those in a 32-bit
202 1AAAAAAA xxxxxxxx AAAAAAAA AAAAAAAA
203 (A - address bits, x - ignore). */
204 dst = (dst & 0xffff) | ((dst & 0xff0000) << 8) | 0x80000000;
205 bfd_put_32 (in_abfd, dst, data + *dst_ptr);
213 ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0)
215 & bfd_coff_reloc16_get_value (reloc, link_info,
224 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
232 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
234 bfd_vma dot = (link_order->offset
236 + input_section->output_section->vma);
237 int gap = dst - dot - 1; /* -1, since we're in the odd byte of the
238 word and the pc's been incremented. */
243 if (gap > 128 || gap < -128)
245 if (! ((*link_info->callbacks->reloc_overflow)
246 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
247 reloc->howto->name, reloc->addend, input_section->owner,
248 input_section, reloc->address)))
251 bfd_put_8 (in_abfd, gap, data + *dst_ptr);
259 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
261 bfd_vma dot = (link_order->offset
263 + input_section->output_section->vma);
264 int gap = dst - dot - 1; /* -1, since we're in the odd byte of the
265 word and the pc's been incremented. */
271 if (gap > 0 || gap < -128)
273 if (! ((*link_info->callbacks->reloc_overflow)
274 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
275 reloc->howto->name, reloc->addend, input_section->owner,
276 input_section, reloc->address)))
280 (bfd_get_8 ( in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f),
289 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
291 bfd_vma dot = (link_order->offset
293 + input_section->output_section->vma);
294 int gap = dst - dot - 2;
299 if (gap > 8191 || gap < -8192)
301 if (! ((*link_info->callbacks->reloc_overflow)
302 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
303 reloc->howto->name, reloc->addend, input_section->owner,
304 input_section, reloc->address)))
308 (bfd_get_16 ( in_abfd, data + *dst_ptr) & 0xf000) | (-gap & 0x0fff),
317 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
319 bfd_vma dot = (link_order->offset
321 + input_section->output_section->vma);
322 int gap = dst - dot - 2;
324 if (gap > 32767 || gap < -32768)
326 if (! ((*link_info->callbacks->reloc_overflow)
327 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
328 reloc->howto->name, reloc->addend, input_section->owner,
329 input_section, reloc->address)))
332 bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
343 #define coff_reloc16_extra_cases extra_case
345 #include "coffcode.h"
347 #undef coff_bfd_get_relocated_section_contents
348 #undef coff_bfd_relax_section
349 #define coff_bfd_get_relocated_section_contents \
350 bfd_coff_reloc16_get_relocated_section_contents
351 #define coff_bfd_relax_section bfd_coff_reloc16_relax_section
353 CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL, COFF_SWAP_TABLE)