source: branches/libc-0.6/src/binutils/bfd/coff-sparc.c

Last change on this file was 610, checked in by bird, 22 years ago

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1/* BFD back-end for Sparc COFF files.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
4 Written by Cygnus Support.
5
6This file is part of BFD, the Binary File Descriptor library.
7
8This program is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2 of the License, or
11(at your option) any later version.
12
13This program is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with this program; if not, write to the Free Software
20Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21
22#include "bfd.h"
23#include "sysdep.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
36
37static reloc_howto_type *coff_sparc_reloc_type_lookup
38 PARAMS ((bfd *, bfd_reloc_code_real_type));
39static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
40
41enum reloc_type
42 {
43 R_SPARC_NONE = 0,
44 R_SPARC_8, R_SPARC_16, R_SPARC_32,
45 R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32,
46 R_SPARC_WDISP30, R_SPARC_WDISP22,
47 R_SPARC_HI22, R_SPARC_22,
48 R_SPARC_13, R_SPARC_LO10,
49 R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22,
50 R_SPARC_PC10, R_SPARC_PC22,
51 R_SPARC_WPLT30,
52 R_SPARC_COPY,
53 R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT,
54 R_SPARC_RELATIVE,
55 R_SPARC_UA32,
56 R_SPARC_max
57 };
58
59#if 0
60static const char *const reloc_type_names[] =
61{
62 "R_SPARC_NONE",
63 "R_SPARC_8", "R_SPARC_16", "R_SPARC_32",
64 "R_SPARC_DISP8", "R_SPARC_DISP16", "R_SPARC_DISP32",
65 "R_SPARC_WDISP30", "R_SPARC_WDISP22",
66 "R_SPARC_HI22", "R_SPARC_22",
67 "R_SPARC_13", "R_SPARC_LO10",
68 "R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22",
69 "R_SPARC_PC10", "R_SPARC_PC22",
70 "R_SPARC_WPLT30",
71 "R_SPARC_COPY",
72 "R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT",
73 "R_SPARC_RELATIVE",
74 "R_SPARC_UA32",
75};
76#endif
77
78/* This is stolen pretty directly from elf.c. */
79static bfd_reloc_status_type
80bfd_coff_generic_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR,
81 asection *, bfd *, char **));
82
83static bfd_reloc_status_type
84bfd_coff_generic_reloc (abfd, reloc_entry, symbol, data, input_section,
85 output_bfd, error_message)
86 bfd *abfd ATTRIBUTE_UNUSED;
87 arelent *reloc_entry;
88 asymbol *symbol;
89 PTR data ATTRIBUTE_UNUSED;
90 asection *input_section;
91 bfd *output_bfd;
92 char **error_message ATTRIBUTE_UNUSED;
93{
94 if (output_bfd != (bfd *) NULL
95 && (symbol->flags & BSF_SECTION_SYM) == 0)
96 {
97 reloc_entry->address += input_section->output_offset;
98 return bfd_reloc_ok;
99 }
100
101 return bfd_reloc_continue;
102}
103
104static reloc_howto_type coff_sparc_howto_table[] =
105{
106 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
107 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_8", FALSE,0,0x000000ff,TRUE),
108 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
109 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_32", FALSE,0,0xffffffff,TRUE),
110 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
111 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
112 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP32", FALSE,0,0x00ffffff,TRUE),
113 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
114 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
115 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
116 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_22", FALSE,0,0x003fffff,TRUE),
117 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_13", FALSE,0,0x00001fff,TRUE),
118 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
119 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
120 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
121 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
122 HOWTO(R_SPARC_PC10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
123 HOWTO(R_SPARC_PC22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
124 HOWTO(R_SPARC_WPLT30, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_WPLT30", FALSE,0,0x00000000,TRUE),
125 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
126 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),
127 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),
128 HOWTO(R_SPARC_RELATIVE,0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
129 HOWTO(R_SPARC_UA32, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_UA32", FALSE,0,0x00000000,TRUE),
130};
131
132struct coff_reloc_map {
133 bfd_reloc_code_real_type bfd_reloc_val;
134 unsigned char coff_reloc_val;
135};
136
137static const struct coff_reloc_map sparc_reloc_map[] =
138{
139 { BFD_RELOC_NONE, R_SPARC_NONE, },
140 { BFD_RELOC_16, R_SPARC_16, },
141 { BFD_RELOC_8, R_SPARC_8 },
142 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
143 { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */
144 { BFD_RELOC_32, R_SPARC_32 },
145 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
146 { BFD_RELOC_HI22, R_SPARC_HI22 },
147 { BFD_RELOC_LO10, R_SPARC_LO10, },
148 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
149 { BFD_RELOC_SPARC22, R_SPARC_22 },
150 { BFD_RELOC_SPARC13, R_SPARC_13 },
151 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
152 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
153 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
154 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
155 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
156 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
157 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
158 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
159 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
160 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
161 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
162 /* { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
163};
164
165static reloc_howto_type *
166coff_sparc_reloc_type_lookup (abfd, code)
167 bfd *abfd ATTRIBUTE_UNUSED;
168 bfd_reloc_code_real_type code;
169{
170 unsigned int i;
171 for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct coff_reloc_map); i++)
172 {
173 if (sparc_reloc_map[i].bfd_reloc_val == code)
174 return &coff_sparc_howto_table[(int) sparc_reloc_map[i].coff_reloc_val];
175 }
176 return 0;
177}
178#define coff_bfd_reloc_type_lookup coff_sparc_reloc_type_lookup
179
180static void
181rtype2howto (cache_ptr, dst)
182 arelent *cache_ptr;
183 struct internal_reloc *dst;
184{
185 BFD_ASSERT (dst->r_type < (unsigned int) R_SPARC_max);
186 cache_ptr->howto = &coff_sparc_howto_table[dst->r_type];
187}
188
189#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
190
191#define SWAP_IN_RELOC_OFFSET H_GET_32
192#define SWAP_OUT_RELOC_OFFSET H_PUT_32
193#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
194 cache_ptr->addend = reloc.r_offset;
195
196/* Clear the r_spare field in relocs. */
197#define SWAP_OUT_RELOC_EXTRA(abfd,src,dst) \
198 do { \
199 dst->r_spare[0] = 0; \
200 dst->r_spare[1] = 0; \
201 } while (0)
202
203#define __A_MAGIC_SET__
204
205/* Enable Sparc-specific hacks in coffcode.h. */
206
207#define COFF_SPARC
208
209#include "coffcode.h"
210
211#ifndef TARGET_SYM
212#define TARGET_SYM sparccoff_vec
213#endif
214
215#ifndef TARGET_NAME
216#define TARGET_NAME "coff-sparc"
217#endif
218
219CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, D_PAGED, 0, '_', NULL)
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