1/* BFD library support routines for the Renesas H8/300 architecture.
2   Copyright (C) 1990-2017 Free Software Foundation, Inc.
3   Hacked by Steve Chamberlain of Cygnus Support.
4
5   This file is part of BFD, the Binary File Descriptor library.
6
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 3 of the License, or
10   (at your option) any later version.
11
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.
16
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., 51 Franklin Street - Fifth Floor, Boston,
20   MA 02110-1301, USA.  */
21
22#include "sysdep.h"
23#include "bfd.h"
24#include "libbfd.h"
25
26static bfd_boolean
27h8300_scan (const struct bfd_arch_info *info, const char *string)
28{
29  if (*string != 'h' && *string != 'H')
30    return FALSE;
31
32  string++;
33  if (*string != '8')
34    return FALSE;
35
36  string++;
37  if (*string == '/')
38    string++;
39
40  if (*string != '3')
41    return FALSE;
42  string++;
43  if (*string != '0')
44    return FALSE;
45  string++;
46  if (*string != '0')
47    return FALSE;
48  string++;
49  if (*string == '-')
50    string++;
51
52  /* In ELF linker scripts, we typically express the architecture/machine
53     as architecture:machine.
54
55     So if we've matched so far and encounter a colon, try to match the
56     string following the colon.  */
57  if (*string == ':')
58    {
59      string++;
60      return h8300_scan (info, string);
61    }
62
63  if (*string == 'h' || *string == 'H')
64    {
65      string++;
66      if (*string == 'n' || *string == 'N')
67	return (info->mach == bfd_mach_h8300hn);
68
69      return (info->mach == bfd_mach_h8300h);
70    }
71  else if (*string == 's' || *string == 'S')
72    {
73      string++;
74      if (*string == 'n' || *string == 'N')
75	return (info->mach == bfd_mach_h8300sn);
76
77      if (*string == 'x' || *string == 'X')
78	{
79	  string++;
80	  if (*string == 'n' || *string == 'N')
81	    return (info->mach == bfd_mach_h8300sxn);
82
83	  return (info->mach == bfd_mach_h8300sx);
84	}
85
86      return (info->mach == bfd_mach_h8300s);
87    }
88  else
89    return info->mach == bfd_mach_h8300;
90}
91
92/* This routine is provided two arch_infos and works out the machine
93   which would be compatible with both and returns a pointer to its
94   info structure.  */
95
96static const bfd_arch_info_type *
97compatible (const bfd_arch_info_type *in, const bfd_arch_info_type *out)
98{
99  if (in->arch != out->arch)
100    return 0;
101  if (in->mach == bfd_mach_h8300sx && out->mach == bfd_mach_h8300s)
102    return in;
103  if (in->mach == bfd_mach_h8300s && out->mach == bfd_mach_h8300sx)
104    return out;
105  if (in->mach == bfd_mach_h8300sxn && out->mach == bfd_mach_h8300sn)
106    return in;
107  if (in->mach == bfd_mach_h8300sn && out->mach == bfd_mach_h8300sxn)
108    return out;
109  /* It's really not a good idea to mix and match modes.  */
110  if (in->mach != out->mach)
111    return 0;
112  else
113    return in;
114}
115
116static const bfd_arch_info_type h8300sxn_info_struct =
117{
118  32,				/* 32 bits in a word */
119  16,				/* 16 bits in an address */
120  8,				/* 8 bits in a byte */
121  bfd_arch_h8300,
122  bfd_mach_h8300sxn,
123  "h8300sxn",			/* arch_name  */
124  "h8300sxn",			/* printable name */
125  1,
126  FALSE,			/* the default machine */
127  compatible,
128  h8300_scan,
129  bfd_arch_default_fill,
130  0
131};
132
133static const bfd_arch_info_type h8300sx_info_struct =
134{
135  32,				/* 32 bits in a word */
136  32,				/* 32 bits in an address */
137  8,				/* 8 bits in a byte */
138  bfd_arch_h8300,
139  bfd_mach_h8300sx,
140  "h8300sx",			/* arch_name  */
141  "h8300sx",			/* printable name */
142  1,
143  FALSE,			/* the default machine */
144  compatible,
145  h8300_scan,
146  bfd_arch_default_fill,
147  &h8300sxn_info_struct
148};
149
150static const bfd_arch_info_type h8300sn_info_struct =
151{
152  32,				/* 32 bits in a word.  */
153  16,				/* 16 bits in an address.  */
154  8,				/* 8 bits in a byte.  */
155  bfd_arch_h8300,
156  bfd_mach_h8300sn,
157  "h8300sn",			/* Architecture name.  */
158  "h8300sn",			/* Printable name.  */
159  1,
160  FALSE,			/* The default machine.  */
161  compatible,
162  h8300_scan,
163  bfd_arch_default_fill,
164  &h8300sx_info_struct
165};
166
167static const bfd_arch_info_type h8300hn_info_struct =
168{
169  32,				/* 32 bits in a word.  */
170  16,				/* 16 bits in an address.  */
171  8,				/* 8 bits in a byte.  */
172  bfd_arch_h8300,
173  bfd_mach_h8300hn,
174  "h8300hn",			/* Architecture name.  */
175  "h8300hn",			/* Printable name.  */
176  1,
177  FALSE,			/* The default machine.  */
178  compatible,
179  h8300_scan,
180  bfd_arch_default_fill,
181  &h8300sn_info_struct
182};
183
184static const bfd_arch_info_type h8300s_info_struct =
185{
186  32,				/* 32 bits in a word.  */
187  32,				/* 32 bits in an address.  */
188  8,				/* 8 bits in a byte.  */
189  bfd_arch_h8300,
190  bfd_mach_h8300s,
191  "h8300s",			/* Architecture name.  */
192  "h8300s",			/* Printable name.  */
193  1,
194  FALSE,			/* The default machine.  */
195  compatible,
196  h8300_scan,
197  bfd_arch_default_fill,
198  & h8300hn_info_struct
199};
200
201static const bfd_arch_info_type h8300h_info_struct =
202{
203  32,				/* 32 bits in a word.  */
204  32,				/* 32 bits in an address.  */
205  8,				/* 8 bits in a byte.  */
206  bfd_arch_h8300,
207  bfd_mach_h8300h,
208  "h8300h",			/* Architecture name.  */
209  "h8300h",			/* Printable name.  */
210  1,
211  FALSE,			/* The default machine.  */
212  compatible,
213  h8300_scan,
214  bfd_arch_default_fill,
215  &h8300s_info_struct
216};
217
218const bfd_arch_info_type bfd_h8300_arch =
219{
220  16,				/* 16 bits in a word.  */
221  16,				/* 16 bits in an address.  */
222  8,				/* 8 bits in a byte.  */
223  bfd_arch_h8300,
224  bfd_mach_h8300,
225  "h8300",			/* Architecture name.  */
226  "h8300",			/* Printable name.  */
227  1,
228  TRUE,				/* The default machine.  */
229  compatible,
230  h8300_scan,
231  bfd_arch_default_fill,
232  &h8300h_info_struct
233};
234
235/* Pad the given address to 32 bits, converting 16-bit and 24-bit
236   addresses into the values they would have had on a h8s target.  */
237
238bfd_vma
239bfd_h8300_pad_address (bfd *abfd, bfd_vma address)
240{
241  /* Cope with bfd_vma's larger than 32 bits.  */
242  address &= 0xffffffffu;
243
244  switch (bfd_get_mach (abfd))
245    {
246    case bfd_mach_h8300:
247    case bfd_mach_h8300hn:
248    case bfd_mach_h8300sn:
249    case bfd_mach_h8300sxn:
250      /* Sign extend a 16-bit address.  */
251      if (address >= 0x8000)
252	return address | 0xffff0000u;
253      return address;
254
255    case bfd_mach_h8300h:
256      /* Sign extend a 24-bit address.  */
257      if (address >= 0x800000)
258	return address | 0xff000000u;
259      return address;
260
261    case bfd_mach_h8300s:
262    case bfd_mach_h8300sx:
263      return address;
264
265    default:
266      abort ();
267    }
268}
269