1 /* BFD back-end for NetBSD/532 a.out-ish binaries.
2 Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
23 * Largely a copy of netbsd386.c plus some code from aout-pc532-mach.c
26 #define BYTES_IN_WORD 4
29 /* ZMAGIC files never include the header in the text. */
30 #define N_HEADER_IN_TEXT(x) 1
32 #define PAGE_SIZE 0x1000
34 /* ZMAGIC files start at address 0. This does not apply to QMAGIC. */
35 #define TEXT_START_ADDR PAGE_SIZE
36 #define N_SHARED_LIB(x) 0
38 /* Use a_entry of 0 to distinguish object files from OMAGIC executables */
39 #define N_TXTADDR(x) \
40 ((N_MAGIC(x) == OMAGIC) && \
41 ((x).a_entry < TEXT_START_ADDR) ? 0 : /* object file or NMAGIC */\
42 N_SHARED_LIB(x) ? 0 : \
43 N_HEADER_IN_TEXT(x) ? \
44 TEXT_START_ADDR + EXEC_BYTES_SIZE : /* no padding */\
45 TEXT_START_ADDR /* a page of padding */\
48 #define SEGMENT_SIZE PAGE_SIZE
50 #define DEFAULT_ARCH bfd_arch_ns32k
52 #define MY(OP) CAT(netbsd532_,OP)
53 /* This needs to start with a.out so GDB knows it is an a.out variant. */
54 #define TARGETNAME "a.out-netbsd-532"
55 #define MACHTYPE_OK(mtype) ((mtype) == M_532_NETBSD)
58 ( (((ex).a_info)&0xffff0000) ? ((((ex).a_info))&0xffff) : ((ex).a_info))
59 #define N_MACHTYPE(ex) \
60 ( (((ex).a_info)&0xffff0000) ? (((((ex).a_info))>>16)&0x03ff) : 0 )
62 ( (((ex).a_info)&0xffff0000) ? ((((ex).a_info)>>26)&0x3f) : 0 )
63 #define N_SET_INFO(ex, mag,mid,flag) \
64 ( (ex).a_info = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
66 #define N_SET_MAGIC(exec,magic) \
67 ((exec).a_info = (((exec).a_info & ~0xffff) | ((magic) & 0xffff)))
68 #define N_SET_MACHTYPE(exec,machtype) \
70 (((exec).a_info & ~(0x3ff<<16)) | (((machtype)&0xff) << 16)))
71 #define N_SET_FLAGS(exec, flags) \
73 (((exec).a_info & ~(0x3f<<26)) | (((flags)&0x3f) << 26)))
75 #define N_MAG(MAG) ((MAG) == o_magic? OMAGIC: ((MAG) == z_magic? ZMAGIC: ((MAG) == n_magic? NMAGIC: 0)))
77 #define WRITE_HEADERS(abfd, execp) \
79 bfd_size_type text_size; /* dummy vars */ \
82 if (adata(abfd).magic == undecided_magic) \
83 NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); \
84 mag = adata(abfd).magic; \
85 N_SET_INFO(*execp, N_MAG(mag), M_532_NETBSD, aout_backend_info (abfd)->exec_hdr_flags); \
87 execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
88 execp->a_entry = bfd_get_start_address (abfd); \
90 execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
91 obj_reloc_entry_size (abfd)); \
92 execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \
93 obj_reloc_entry_size (abfd)); \
94 NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \
96 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) return false; \
97 if (bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) \
100 /* Now write out reloc info, followed by syms and strings */ \
102 if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \
103 && bfd_get_symcount (abfd) != 0) \
105 if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET) \
109 if (! NAME(aout,write_syms)(abfd)) return false; \
111 if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET) \
115 if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) \
117 if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET) \
121 if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) \
129 #include "aout-ns32k.h"
134 /* On NetBSD, the magic number is always in ntohl's "network" (big-endian)
136 #define SWAP_MAGIC(ext) bfd_getb32 (ext)
138 #include "aout/aout64.h"
140 /* Forward declaration. Defined in aout-target.h */
141 static boolean
MY(set_sizes
)();
143 static CONST
struct aout_backend_data
MY(backend_data
) = {
144 0, /* zmagic contiguous */
145 1, /* text incl header */
149 0, /* exec header is counted */
152 #define MY_backend_data &MY(backend_data)
155 /* We can`t use the MYNS macro here for cpp reasons too subtle
158 #define MY_bfd_reloc_type_lookup ns32kaout_bfd_reloc_type_lookup
160 /* libaout doesn't use NAME for these ... */
161 #define MY_get_section_contents aout_32_get_section_contents
164 MY(write_object_contents
) (abfd
)
167 struct external_exec exec_bytes
;
168 struct internal_exec
*execp
= exec_hdr (abfd
);
170 #if CHOOSE_RELOC_SIZE
171 CHOOSE_RELOC_SIZE(abfd
);
173 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
176 BFD_ASSERT(bfd_get_arch(abfd
) == bfd_arch_ns32k
);
177 BFD_ASSERT(bfd_get_mach(abfd
) == 32532);
178 N_SET_MACHTYPE (*execp
, M_532_NETBSD
);
180 N_SET_FLAGS (*execp
, aout_backend_info (abfd
)->exec_hdr_flags
);
182 WRITE_HEADERS(abfd
, execp
);
187 #define MY_write_object_contents MY(write_object_contents)
189 #include "aout-target.h"
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