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[binutils.git] / bfd / sparclynx.c
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1 /* BFD support for Sparc binaries under LynxOS.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000,
3 2001, 2002, 2003 Free Software Foundation, Inc.
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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 #if 0
22 #define N_SHARED_LIB(x) 0
24 #define TEXT_START_ADDR 0
25 #define TARGET_PAGE_SIZE 4096
26 #define SEGMENT_SIZE TARGET_PAGE_SIZE
27 #define DEFAULT_ARCH bfd_arch_sparc
29 #endif
31 /* Do not "beautify" the CONCAT* macro args. Traditional C will not
32 remove whitespace added here, and thus will fail to concatenate
33 the tokens. */
34 #define MY(OP) CONCAT2 (sparclynx_aout_,OP)
35 #define TARGETNAME "a.out-sparc-lynx"
37 #include "bfd.h"
38 #include "sysdep.h"
39 #include "libbfd.h"
41 #include "aout/sun4.h"
42 #include "libaout.h" /* BFD a.out internal data structures */
44 #include "aout/aout64.h"
45 #include "aout/stab_gnu.h"
46 #include "aout/ar.h"
48 void NAME (lynx,set_arch_mach) PARAMS ((bfd *, unsigned long));
49 static void choose_reloc_size PARAMS ((bfd *));
50 static bfd_boolean NAME (aout,sparclynx_write_object_contents) PARAMS ((bfd *));
52 /* This is needed to reject a NewsOS file, e.g. in
53 gdb/testsuite/gdb.t10/crossload.exp. <kingdon@cygnus.com>
54 I needed to add M_UNKNOWN to recognize a 68000 object, so this will
55 probably no longer reject a NewsOS object. <ian@cygnus.com>. */
56 #define MACHTYPE_OK(mtype) ((mtype) == M_UNKNOWN \
57 || (mtype) == M_68010 \
58 || (mtype) == M_68020 \
59 || (mtype) == M_SPARC)
61 /* The file @code{aoutf1.h} contains the code for BFD's
62 a.out back end. Control over the generated back end is given by these
63 two preprocessor names:
64 @table @code
65 @item ARCH_SIZE
66 This value should be either 32 or 64, depending upon the size of an
67 int in the target format. It changes the sizes of the structs which
68 perform the memory/disk mapping of structures.
70 The 64 bit backend may only be used if the host compiler supports 64
71 ints (eg long long with gcc), by defining the name @code{BFD_HOST_64_BIT} in @code{bfd.h}.
72 With this name defined, @emph{all} bfd operations are performed with 64bit
73 arithmetic, not just those to a 64bit target.
75 @item TARGETNAME
76 The name put into the target vector.
77 @item
78 @end table */
80 void
81 NAME(lynx,set_arch_mach) (abfd, machtype)
82 bfd *abfd;
83 unsigned long machtype;
85 /* Determine the architecture and machine type of the object file. */
86 enum bfd_architecture arch;
87 unsigned long machine;
89 switch (machtype)
91 case M_UNKNOWN:
92 /* Some Sun3s make magic numbers without cpu types in them, so
93 we'll default to the 68000. */
94 arch = bfd_arch_m68k;
95 machine = bfd_mach_m68000;
96 break;
98 case M_68010:
99 case M_HP200:
100 arch = bfd_arch_m68k;
101 machine = bfd_mach_m68010;
102 break;
104 case M_68020:
105 case M_HP300:
106 arch = bfd_arch_m68k;
107 machine = bfd_mach_m68020;
108 break;
110 case M_SPARC:
111 arch = bfd_arch_sparc;
112 machine = 0;
113 break;
115 case M_386:
116 case M_386_DYNIX:
117 arch = bfd_arch_i386;
118 machine = 0;
119 break;
121 case M_29K:
122 arch = bfd_arch_a29k;
123 machine = 0;
124 break;
126 case M_HPUX:
127 arch = bfd_arch_m68k;
128 machine = 0;
129 break;
131 default:
132 arch = bfd_arch_obscure;
133 machine = 0;
134 break;
136 bfd_set_arch_mach (abfd, arch, machine);
139 #define SET_ARCH_MACH(ABFD, EXEC) \
140 NAME(lynx,set_arch_mach) (ABFD, N_MACHTYPE (EXEC)); \
141 choose_reloc_size(ABFD);
143 /* Determine the size of a relocation entry, based on the architecture. */
145 static void
146 choose_reloc_size (abfd)
147 bfd *abfd;
149 switch (bfd_get_arch (abfd))
151 case bfd_arch_sparc:
152 case bfd_arch_a29k:
153 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
154 break;
155 default:
156 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
157 break;
161 /* Write an object file in LynxOS format.
162 Section contents have already been written. We write the
163 file header, symbols, and relocation. */
165 static bfd_boolean
166 NAME(aout,sparclynx_write_object_contents) (abfd)
167 bfd *abfd;
169 struct external_exec exec_bytes;
170 struct internal_exec *execp = exec_hdr (abfd);
172 /* Magic number, maestro, please! */
173 switch (bfd_get_arch (abfd))
175 case bfd_arch_m68k:
176 switch (bfd_get_mach (abfd))
178 case bfd_mach_m68010:
179 N_SET_MACHTYPE (*execp, M_68010);
180 break;
181 default:
182 case bfd_mach_m68020:
183 N_SET_MACHTYPE (*execp, M_68020);
184 break;
186 break;
187 case bfd_arch_sparc:
188 N_SET_MACHTYPE (*execp, M_SPARC);
189 break;
190 case bfd_arch_i386:
191 N_SET_MACHTYPE (*execp, M_386);
192 break;
193 case bfd_arch_a29k:
194 N_SET_MACHTYPE (*execp, M_29K);
195 break;
196 default:
197 N_SET_MACHTYPE (*execp, M_UNKNOWN);
200 choose_reloc_size (abfd);
202 N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
204 WRITE_HEADERS (abfd, execp);
206 return TRUE;
209 #define MY_set_sizes sparclynx_set_sizes
210 static bfd_boolean sparclynx_set_sizes PARAMS ((bfd *));
212 static bfd_boolean
213 sparclynx_set_sizes (abfd)
214 bfd *abfd;
216 switch (bfd_get_arch (abfd))
218 default:
219 return FALSE;
220 case bfd_arch_sparc:
221 adata (abfd).page_size = 0x2000;
222 adata (abfd).segment_size = 0x2000;
223 adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
224 return TRUE;
225 case bfd_arch_m68k:
226 adata (abfd).page_size = 0x2000;
227 adata (abfd).segment_size = 0x20000;
228 adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
229 return TRUE;
233 static const struct aout_backend_data sparclynx_aout_backend =
235 0, 1, 0, 1, 0, sparclynx_set_sizes, 0,
236 0, /* add_dynamic_symbols */
237 0, /* add_one_symbol */
238 0, /* link_dynamic_object */
239 0, /* write_dynamic_symbol */
240 0, /* check_dynamic_reloc */
241 0 /* finish_dynamic_link */
245 #define MY_bfd_debug_info_start bfd_void
246 #define MY_bfd_debug_info_end bfd_void
247 #define MY_bfd_debug_info_accumulate \
248 (void (*) PARAMS ((bfd *, struct bfd_section *))) bfd_void
250 #define MY_write_object_contents NAME(aout,sparclynx_write_object_contents)
251 #define MY_backend_data &sparclynx_aout_backend
253 #define TARGET_IS_BIG_ENDIAN_P
255 #ifdef LYNX_CORE
257 char * lynx_core_file_failing_command ();
258 int lynx_core_file_failing_signal ();
259 bfd_boolean lynx_core_file_matches_executable_p ();
260 const bfd_target * lynx_core_file_p ();
262 #define MY_core_file_failing_command lynx_core_file_failing_command
263 #define MY_core_file_failing_signal lynx_core_file_failing_signal
264 #define MY_core_file_matches_executable_p lynx_core_file_matches_executable_p
265 #define MY_core_file_p lynx_core_file_p
267 #endif /* LYNX_CORE */
269 #include "aout-target.h"