1 /* BFD back-end for Motorola 88000 COFF "Binary Compatibility Standard" files.
2 Copyright (C) 1990-2016 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
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 3 of the License, or
10 (at your option) any later version.
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.
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., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
22 #define M88 1 /* Customize various include files */
26 #include "coff/m88k.h"
27 #include "coff/internal.h"
30 static bfd_reloc_status_type m88k_special_reloc
31 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
33 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
35 #define GET_SCNHDR_NRELOC H_GET_32
36 #define GET_SCNHDR_NLNNO H_GET_32
38 /* On coff-m88k, local labels start with '@'. */
40 #define coff_bfd_is_local_label_name m88k_is_local_label_name
43 m88k_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
45 return name[0] == '@';
48 static bfd_reloc_status_type
49 m88k_special_reloc (bfd *abfd,
53 asection *input_section,
55 char **error_message ATTRIBUTE_UNUSED)
57 reloc_howto_type *howto = reloc_entry->howto;
63 if (output_bfd != (bfd *) NULL)
65 /* This is a partial relocation, and we want to apply the
66 relocation to the reloc entry rather than the raw data.
67 Modify the reloc inplace to reflect what we now know. */
69 reloc_entry->address += input_section->output_offset;
73 bfd_vma output_base = 0;
74 bfd_vma addr = reloc_entry->address;
75 bfd_vma x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
76 asection *reloc_target_output_section;
79 /* Work out which section the relocation is targeted at and the
80 initial relocation command value. */
82 /* Get symbol value. (Common symbols are special.) */
83 if (bfd_is_com_section (symbol->section))
86 relocation = symbol->value;
88 reloc_target_output_section = symbol->section->output_section;
90 /* Convert input-section-relative symbol value to absolute. */
94 output_base = reloc_target_output_section->vma;
96 relocation += output_base + symbol->section->output_offset;
98 /* Add in supplied addend. */
99 relocation += ((reloc_entry->addend << howto->bitsize) + x);
101 reloc_entry->addend = 0;
103 relocation >>= (bfd_vma) howto->rightshift;
105 /* Shift everything up to where it's going to be used */
107 relocation <<= (bfd_vma) howto->bitpos;
110 bfd_put_16 (abfd, (bfd_vma) relocation,
111 (unsigned char *) data + addr);
114 /* If we are not producing relocatable output, return an error if
115 the symbol is not defined. */
116 if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
117 return bfd_reloc_undefined;
122 if (output_bfd != (bfd *) NULL)
124 /* This is a partial relocation, and we want to apply the
125 relocation to the reloc entry rather than the raw data.
126 Modify the reloc inplace to reflect what we now know. */
128 reloc_entry->address += input_section->output_offset;
134 if (output_bfd == (bfd *) NULL)
135 return bfd_reloc_continue;
140 static reloc_howto_type howto_table[] =
142 HOWTO (R_PCR16L, /* type */
144 1, /* size (0 = byte, 1 = short, 2 = long) */
146 TRUE, /* pc_relative */
148 complain_overflow_signed, /* complain_on_overflow */
149 m88k_special_reloc, /* special_function */
151 FALSE, /* partial_inplace */
152 0x0000ffff, /* src_mask */
153 0x0000ffff, /* dst_mask */
154 TRUE), /* pcrel_offset */
156 HOWTO (R_PCR26L, /* type */
158 2, /* size (0 = byte, 1 = short, 2 = long) */
160 TRUE, /* pc_relative */
162 complain_overflow_signed, /* complain_on_overflow */
163 m88k_special_reloc, /* special_function */
165 FALSE, /* partial_inplace */
166 0x03ffffff, /* src_mask */
167 0x03ffffff, /* dst_mask */
168 TRUE), /* pcrel_offset */
170 HOWTO (R_VRT16, /* type */
172 1, /* size (0 = byte, 1 = short, 2 = long) */
174 FALSE, /* pc_relative */
176 complain_overflow_bitfield, /* complain_on_overflow */
177 m88k_special_reloc, /* special_function */
179 FALSE, /* partial_inplace */
180 0x0000ffff, /* src_mask */
181 0x0000ffff, /* dst_mask */
182 TRUE), /* pcrel_offset */
184 HOWTO (R_HVRT16, /* type */
186 1, /* size (0 = byte, 1 = short, 2 = long) */
188 FALSE, /* pc_relative */
190 complain_overflow_dont, /* complain_on_overflow */
191 m88k_special_reloc, /* special_function */
193 FALSE, /* partial_inplace */
194 0x0000ffff, /* src_mask */
195 0x0000ffff, /* dst_mask */
196 TRUE), /* pcrel_offset */
198 HOWTO (R_LVRT16, /* type */
200 1, /* size (0 = byte, 1 = short, 2 = long) */
202 FALSE, /* pc_relative */
204 complain_overflow_dont, /* complain_on_overflow */
205 m88k_special_reloc, /* special_function */
207 FALSE, /* partial_inplace */
208 0x0000ffff, /* src_mask */
209 0x0000ffff, /* dst_mask */
210 TRUE), /* pcrel_offset */
212 HOWTO (R_VRT32, /* type */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
216 FALSE, /* pc_relative */
218 complain_overflow_bitfield, /* complain_on_overflow */
219 m88k_special_reloc, /* special_function */
221 FALSE, /* partial_inplace */
222 0xffffffff, /* src_mask */
223 0xffffffff, /* dst_mask */
224 TRUE), /* pcrel_offset */
227 /* Code to turn an external r_type into a pointer to an entry in the
228 above howto table. */
230 rtype2howto (arelent *cache_ptr, struct internal_reloc *dst)
232 if (dst->r_type >= R_PCR16L && dst->r_type <= R_VRT32)
234 cache_ptr->howto = howto_table + dst->r_type - R_PCR16L;
242 #define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst)
244 /* Code to swap in the reloc offset */
245 #define SWAP_IN_RELOC_OFFSET H_GET_16
246 #define SWAP_OUT_RELOC_OFFSET H_PUT_16
248 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
249 reloc_processing(relent, reloc, symbols, abfd, section)
252 reloc_processing (arelent *relent,
253 struct internal_reloc *reloc,
258 relent->address = reloc->r_vaddr;
259 rtype2howto (relent, reloc);
261 if (((int) reloc->r_symndx) > 0)
263 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
267 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
270 relent->addend = reloc->r_offset;
271 relent->address -= section->vma;
274 #define BADMAG(x) MC88BADMAG(x)
276 #ifndef bfd_pe_print_pdata
277 #define bfd_pe_print_pdata NULL
280 #include "coffcode.h"
282 #undef coff_write_armap
284 CREATE_BIG_COFF_TARGET_VEC (m88k_coff_bcs_vec, "coff-m88kbcs", 0, 0, '_', NULL, COFF_SWAP_TABLE)