1 /* BFD back-end for Mach3/532 a.out-ish binaries.
2    Copyright (C) 1990-2016 Free Software Foundation, Inc.
3 
4    This file is part of BFD, the Binary File Descriptor library.
5 
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 3 of the License, or
9    (at your option) any later version.
10 
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.
15 
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., 51 Franklin Street - Fifth Floor, Boston,
19    MA 02110-1301, USA.  */
20 
21 
22 /* Written by Ian Dall
23               19-Apr-94
24 
25    Formerly part of aout-pc532-mach.c. Split out to allow more
26    flexibility with multiple formats.  */
27 
28 /* This architecture has N_TXTOFF and N_TXTADDR defined as if
29    N_HEADER_IN_TEXT, but the a_text entry (text size) does not include the
30    space for the header. So we have N_HEADER_IN_TEXT defined to
31    1 and specially define our own N_TXTSIZE.  */
32 
33 #define N_HEADER_IN_TEXT(x) 1
34 #define N_TXTSIZE(x) ((x)->a_text)
35 
36 #define TEXT_START_ADDR 0x10000       /* from old ld */
37 #define TARGET_PAGE_SIZE 0x1000       /* from old ld,  032 & 532 are really 512/4k */
38 
39 /* Use a_entry of 0 to distinguish object files from OMAGIC executables */
40 #define N_TXTADDR(x) \
41   (N_MAGIC(x) == OMAGIC ? \
42    ((x)->a_entry < TEXT_START_ADDR? 0: TEXT_START_ADDR): \
43    (N_MAGIC(x) == NMAGIC? TEXT_START_ADDR: \
44     TEXT_START_ADDR + EXEC_BYTES_SIZE))
45 
46 #define	SEGMENT_SIZE	TARGET_PAGE_SIZE
47 
48 #define SEGMENT_SIZE TARGET_PAGE_SIZE
49 #define DEFAULT_ARCH bfd_arch_ns32k
50 
51 /* Do not "beautify" the CONCAT* macro args.  Traditional C will not
52    remove whitespace added here, and thus will fail to concatenate
53    the tokens.  */
54 #define MY(OP) CONCAT2 (ns32k_aout_pc532mach_,OP)
55 
56 /* Must be the same as aout-ns32k.c */
57 #define NAME(x,y) CONCAT3 (ns32kaout,_32_,y)
58 
59 #define TARGETNAME "a.out-pc532-mach"
60 
61 #include "sysdep.h"
62 #include "bfd.h"
63 #include "libaout.h"
64 #include "libbfd.h"
65 #include "aout/aout64.h"
66 
67 #define MY_bfd_reloc_type_lookup ns32k_aout_bfd_reloc_type_lookup
68 
69 /* libaout doesn't use NAME for these ...  */
70 
71 #define MY_get_section_contents aout_32_get_section_contents
72 
73 #define MY_text_includes_header 1
74 
75 #define MY_exec_header_not_counted 1
76 
77 reloc_howto_type *MY_bfd_reloc_type_lookup
78   (bfd *abfd, bfd_reloc_code_real_type code);
79 
80 static bfd_boolean
MY(write_object_contents)81 MY(write_object_contents) (bfd *abfd)
82 {
83   struct external_exec exec_bytes;
84   struct internal_exec *execp = exec_hdr (abfd);
85 
86   obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
87 
88   BFD_ASSERT (bfd_get_arch (abfd) == bfd_arch_ns32k);
89   switch (bfd_get_mach (abfd))
90     {
91     case 32032:
92       N_SET_MACHTYPE (execp, M_NS32032);
93       break;
94     case 32532:
95     default:
96       N_SET_MACHTYPE (execp, M_NS32532);
97       break;
98     }
99   N_SET_FLAGS (execp, aout_backend_info (abfd)->exec_hdr_flags);
100 
101   WRITE_HEADERS (abfd, execp);
102 
103   return TRUE;
104 }
105 
106 #define MY_write_object_contents MY(write_object_contents)
107 
108 #include "aout-target.h"
109