source: binutils/trunk/bfd/coff-sparc.c@ 1973

Last change on this file since 1973 was 1973, checked in by Silvan Scherrer, 8 years ago

binutils: update trunk to version 2.27
File size: 8.4 KB
Line 
1/* BFD back-end for Sparc COFF files.
2 Copyright (C) 1990-2016 Free Software Foundation, Inc.
3 Written by Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
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.
11
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.
16
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. */
21
22#include "sysdep.h"
23#include "bfd.h"
24#include "libbfd.h"
25#include "coff/sparc.h"
26#include "coff/internal.h"
27#include "libcoff.h"
28
29#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
30
31#define BADMAG(x) ((x).f_magic != SPARCMAGIC && (x).f_magic != LYNXCOFFMAGIC)
32
33/* The page size is a guess based on ELF. */
34#define COFF_PAGE_SIZE 0x10000
35
36enum reloc_type
37 {
38 R_SPARC_NONE = 0,
39 R_SPARC_8, R_SPARC_16, R_SPARC_32,
40 R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32,
41 R_SPARC_WDISP30, R_SPARC_WDISP22,
42 R_SPARC_HI22, R_SPARC_22,
43 R_SPARC_13, R_SPARC_LO10,
44 R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22,
45 R_SPARC_PC10, R_SPARC_PC22,
46 R_SPARC_WPLT30,
47 R_SPARC_COPY,
48 R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT,
49 R_SPARC_RELATIVE,
50 R_SPARC_UA32,
51 R_SPARC_max
52 };
53
54/* This is stolen pretty directly from elf.c. */
55
56static bfd_reloc_status_type
57bfd_coff_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED,
58 arelent *reloc_entry,
59 asymbol *symbol,
60 void * data ATTRIBUTE_UNUSED,
61 asection *input_section,
62 bfd *output_bfd,
63 char **error_message ATTRIBUTE_UNUSED)
64{
65 if (output_bfd != (bfd *) NULL
66 && (symbol->flags & BSF_SECTION_SYM) == 0)
67 {
68 reloc_entry->address += input_section->output_offset;
69 return bfd_reloc_ok;
70 }
71
72 return bfd_reloc_continue;
73}
74
75static reloc_howto_type coff_sparc_howto_table[] =
76{
77 HOWTO(R_SPARC_NONE, 0,3, 0,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
78 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_8", FALSE,0,0x000000ff,TRUE),
79 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
80 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_32", FALSE,0,0xffffffff,TRUE),
81 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
82 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
83 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP32", FALSE,0,0x00ffffff,TRUE),
84 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
85 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
86 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
87 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_22", FALSE,0,0x003fffff,TRUE),
88 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_13", FALSE,0,0x00001fff,TRUE),
89 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
90 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
91 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
92 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
93 HOWTO(R_SPARC_PC10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
94 HOWTO(R_SPARC_PC22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
95 HOWTO(R_SPARC_WPLT30, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_WPLT30", FALSE,0,0x00000000,TRUE),
96 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
97 HOWTO(R_SPARC_GLOB_DAT,0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
98 HOWTO(R_SPARC_JMP_SLOT,0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
99 HOWTO(R_SPARC_RELATIVE,0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
100 HOWTO(R_SPARC_UA32, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_UA32", FALSE,0,0x00000000,TRUE),
101};
102
103struct coff_reloc_map
104{
105 bfd_reloc_code_real_type bfd_reloc_val;
106 unsigned char coff_reloc_val;
107};
108
109static const struct coff_reloc_map sparc_reloc_map[] =
110{
111 { BFD_RELOC_NONE, R_SPARC_NONE, },
112 { BFD_RELOC_16, R_SPARC_16, },
113 { BFD_RELOC_8, R_SPARC_8 },
114 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
115 { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */
116 { BFD_RELOC_32, R_SPARC_32 },
117 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
118 { BFD_RELOC_HI22, R_SPARC_HI22 },
119 { BFD_RELOC_LO10, R_SPARC_LO10, },
120 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
121 { BFD_RELOC_SPARC22, R_SPARC_22 },
122 { BFD_RELOC_SPARC13, R_SPARC_13 },
123 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
124 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
125 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
126 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
127 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
128 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
129 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
130 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
131 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
132 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
133 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
134 /* { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
135};
136
137static reloc_howto_type *
138coff_sparc_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
139 bfd_reloc_code_real_type code)
140{
141 unsigned int i;
142 for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct coff_reloc_map); i++)
143 {
144 if (sparc_reloc_map[i].bfd_reloc_val == code)
145 return &coff_sparc_howto_table[(int) sparc_reloc_map[i].coff_reloc_val];
146 }
147 return 0;
148}
149#define coff_bfd_reloc_type_lookup coff_sparc_reloc_type_lookup
150
151static reloc_howto_type *
152coff_sparc_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
153 const char *r_name)
154{
155 unsigned int i;
156
157 for (i = 0;
158 i < (sizeof (coff_sparc_howto_table)
159 / sizeof (coff_sparc_howto_table[0]));
160 i++)
161 if (coff_sparc_howto_table[i].name != NULL
162 && strcasecmp (coff_sparc_howto_table[i].name, r_name) == 0)
163 return &coff_sparc_howto_table[i];
164
165 return NULL;
166}
167#define coff_bfd_reloc_name_lookup coff_sparc_reloc_name_lookup
168
169static void
170rtype2howto (arelent *cache_ptr, struct internal_reloc *dst)
171{
172 BFD_ASSERT (dst->r_type < (unsigned int) R_SPARC_max);
173 cache_ptr->howto = &coff_sparc_howto_table[dst->r_type];
174}
175
176#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
177
178#define SWAP_IN_RELOC_OFFSET H_GET_32
179#define SWAP_OUT_RELOC_OFFSET H_PUT_32
180#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
181 cache_ptr->addend = reloc.r_offset;
182
183/* Clear the r_spare field in relocs. */
184#define SWAP_OUT_RELOC_EXTRA(abfd,src,dst) \
185 do { \
186 dst->r_spare[0] = 0; \
187 dst->r_spare[1] = 0; \
188 } while (0)
189
190#define __A_MAGIC_SET__
191
192/* Enable Sparc-specific hacks in coffcode.h. */
193
194#define COFF_SPARC
195
196#define bfd_pe_print_pdata NULL
197
198#include "coffcode.h"
199
200#ifndef TARGET_SYM
201#define TARGET_SYM sparc_coff_vec
202#endif
203
204#ifndef TARGET_NAME
205#define TARGET_NAME "coff-sparc"
206#endif
207
208CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, D_PAGED, 0, '_', NULL, COFF_SWAP_TABLE)
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