1 /* BFD back-end for NetBSD/532 a.out-ish binaries.
2 Copyright (C) 1990, 1991, 1992, 1994 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
28 /* ZMAGIC files never include the header in the text. */
29 #define N_HEADER_IN_TEXT(x) 1
31 #define PAGE_SIZE 0x1000
33 /* ZMAGIC files start at address 0. This does not apply to QMAGIC. */
34 #define TEXT_START_ADDR PAGE_SIZE
35 #define N_SHARED_LIB(x) 0
37 /* Use a_entry of 0 to distinguish object files from OMAGIC executables */
38 #define N_TXTADDR(x) \
39 ((N_MAGIC(x) == OMAGIC) && \
40 ((x).a_entry < TEXT_START_ADDR) ? 0 : /* object file or NMAGIC */\
41 N_SHARED_LIB(x) ? 0 : \
42 N_HEADER_IN_TEXT(x) ? \
43 TEXT_START_ADDR + EXEC_BYTES_SIZE : /* no padding */\
44 TEXT_START_ADDR /* a page of padding */\
47 #define SEGMENT_SIZE PAGE_SIZE
49 #define DEFAULT_ARCH bfd_arch_ns32k
51 #define MY(OP) CAT(netbsd532_,OP)
52 /* This needs to start with a.out so GDB knows it is an a.out variant. */
53 #define TARGETNAME "a.out-netbsd-532"
54 #define MACHTYPE_OK(mtype) ((mtype) == M_532_NETBSD)
57 ( (((ex).a_info)&0xffff0000) ? ((((ex).a_info))&0xffff) : ((ex).a_info))
58 #define N_MACHTYPE(ex) \
59 ( (((ex).a_info)&0xffff0000) ? (((((ex).a_info))>>16)&0x03ff) : 0 )
61 ( (((ex).a_info)&0xffff0000) ? ((((ex).a_info)>>26)&0x3f) : 0 )
62 #define N_SET_INFO(ex, mag,mid,flag) \
63 ( (ex).a_info = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
65 #define N_SET_MAGIC(exec,magic) \
66 ((exec).a_info = (((exec).a_info & ~0xffff) | ((magic) & 0xffff)))
67 #define N_SET_MACHTYPE(exec,machtype) \
69 (((exec).a_info & ~(0x3ff<<16)) | (((machtype)&0xff) << 16)))
70 #define N_SET_FLAGS(exec, flags) \
72 (((exec).a_info & ~(0x3f<<26)) | (((flags)&0x3f) << 26)))
74 #define N_MAG(MAG) ((MAG) == o_magic? OMAGIC: ((MAG) == z_magic? ZMAGIC: ((MAG) == n_magic? NMAGIC: 0)))
76 #define WRITE_HEADERS(abfd, execp) \
78 bfd_size_type text_size; /* dummy vars */ \
81 if (adata(abfd).magic == undecided_magic) \
82 NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); \
83 mag = adata(abfd).magic; \
84 N_SET_INFO(*execp, N_MAG(mag), M_532_NETBSD, aout_backend_info (abfd)->exec_hdr_flags); \
86 execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
87 execp->a_entry = bfd_get_start_address (abfd); \
89 execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
90 obj_reloc_entry_size (abfd)); \
91 execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \
92 obj_reloc_entry_size (abfd)); \
93 NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \
95 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) return false; \
96 if (bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) \
99 /* Now write out reloc info, followed by syms and strings */ \
101 if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \
102 && bfd_get_symcount (abfd) != 0) \
104 if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET) \
108 if (! NAME(aout,write_syms)(abfd)) return false; \
110 if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET) \
114 if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) \
116 if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET) \
120 if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) \
131 /* On NetBSD, the magic number is always in ntohl's "network" (big-endian)
133 #define SWAP_MAGIC(ext) bfd_getb32 (ext)
135 #include "aout/aout64.h"
137 /* Forward declaration. Defined in aout-target.h */
139 static boolean MY(set_sizes)();
141 static CONST struct aout_backend_data MY(backend_data) = {
142 0, /* zmagic contiguous */
143 1, /* text incl header */
147 0, /* exec header is counted */
150 #define MY_backend_data &MY(backend_data)
152 /* We can`t use the MYNS macro here for cpp reasons too subtle
155 #define MY_bfd_reloc_type_lookup ns32kaout_bfd_reloc_type_lookup
157 /* libaout doesn't use NAME for these ... */
158 #define MY_get_section_contents aout_32_get_section_contents
160 #define MYNSX(OP) CAT(ns32kaout_,OP)
161 CONST struct reloc_howto_struct *
162 MYNSX(bfd_reloc_type_lookup)
163 PARAMS((bfd *abfd AND
164 bfd_reloc_code_real_type code));
167 MYNSX(write_object_contents)
171 MY(write_object_contents) (abfd)
174 struct external_exec exec_bytes;
175 struct internal_exec *execp = exec_hdr (abfd);
177 #if CHOOSE_RELOC_SIZE
178 CHOOSE_RELOC_SIZE(abfd);
180 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
183 BFD_ASSERT(bfd_get_arch(abfd) == bfd_arch_ns32k);
184 BFD_ASSERT(bfd_get_mach(abfd) == 32532);
185 N_SET_MACHTYPE (*execp, M_532_NETBSD);
187 N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
189 WRITE_HEADERS(abfd, execp);
194 #define MY_write_object_contents MY(write_object_contents)
196 #include "aout-target.h"