1/* XC16X opcode support.  -*- C -*-
2
3   Copyright 2006, 2007, 2009 Free Software Foundation, Inc.
4
5   Contributed by KPIT Cummins Infosystems Ltd.; developed under contract
6   from Infineon Systems, GMBH , Germany.
7
8   This file is part of the GNU Binutils.
9
10   This program is free software; you can redistribute it and/or modify
11   it under the terms of the GNU General Public License as published by
12   the Free Software Foundation; either version 3 of the License, or
13   (at your option) any later version.
14
15   This program is distributed in the hope that it will be useful,
16   but WITHOUT ANY WARRANTY; without even the implied warranty of
17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18   GNU General Public License for more details.
19
20   You should have received a copy of the GNU General Public License
21   along with this program; if not, write to the Free Software
22   Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23   02110-1301, USA.  */
24
25
26/* This file is an addendum to xc16x.cpu.  Heavy use of C code isn't
27   appropriate in .cpu files, so it resides here.  This especially applies
28   to assembly/disassembly where parsing/printing can be quite involved.
29   Such things aren't really part of the specification of the cpu, per se,
30   so .cpu files provide the general framework and .opc files handle the
31   nitty-gritty details as necessary.
32
33   Each section is delimited with start and end markers.
34
35   <arch>-opc.h additions use: "-- opc.h"
36   <arch>-opc.c additions use: "-- opc.c"
37   <arch>-asm.c additions use: "-- asm.c"
38   <arch>-dis.c additions use: "-- dis.c"
39   <arch>-ibd.h additions use: "-- ibd.h"  */
40
41/* -- opc.h */
42
43#define CGEN_DIS_HASH_SIZE 8
44#define CGEN_DIS_HASH(buf,value) (((* (unsigned char*) (buf)) >> 3) % CGEN_DIS_HASH_SIZE)
45
46/* -- */
47
48/* -- opc.c */
49
50/* -- */
51
52/* -- asm.c */
53/* Handle '#' prefixes (i.e. skip over them).  */
54
55static const char *
56parse_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
57	    const char **strp,
58	    int opindex ATTRIBUTE_UNUSED,
59	    long *valuep ATTRIBUTE_UNUSED)
60{
61  if (**strp == '#')
62    {
63      ++*strp;
64      return NULL;
65    }
66  return _("Missing '#' prefix");
67}
68
69/* Handle '.' prefixes (i.e. skip over them).  */
70
71static const char *
72parse_dot (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
73	   const char **strp,
74	   int opindex ATTRIBUTE_UNUSED,
75	   long *valuep ATTRIBUTE_UNUSED)
76{
77  if (**strp == '.')
78    {
79      ++*strp;
80      return NULL;
81    }
82  return _("Missing '.' prefix");
83}
84
85/* Handle 'pof:' prefixes (i.e. skip over them).  */
86
87static const char *
88parse_pof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
89	   const char **strp,
90	   int opindex ATTRIBUTE_UNUSED,
91	   long *valuep ATTRIBUTE_UNUSED)
92{
93  if (strncasecmp (*strp, "pof:", 4) == 0)
94    {
95      *strp += 4;
96      return NULL;
97    }
98  return _("Missing 'pof:' prefix");
99}
100
101/* Handle 'pag:' prefixes (i.e. skip over them).  */
102
103static const char *
104parse_pag (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
105	   const char **strp,
106	   int opindex ATTRIBUTE_UNUSED,
107	   long *valuep ATTRIBUTE_UNUSED)
108{
109  if (strncasecmp (*strp, "pag:", 4) == 0)
110    {
111      *strp += 4;
112      return NULL;
113    }
114  return _("Missing 'pag:' prefix");
115}
116
117/* Handle 'sof' prefixes (i.e. skip over them).  */
118
119static const char *
120parse_sof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
121	   const char **strp,
122	   int opindex ATTRIBUTE_UNUSED,
123	   long *valuep ATTRIBUTE_UNUSED)
124{
125  if (strncasecmp (*strp, "sof:", 4) == 0)
126    {
127      *strp += 4;
128      return NULL;
129    }
130  return _("Missing 'sof:' prefix");
131}
132
133/* Handle 'seg' prefixes (i.e. skip over them).  */
134
135static const char *
136parse_seg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
137	   const char **strp,
138	   int opindex ATTRIBUTE_UNUSED,
139	   long *valuep ATTRIBUTE_UNUSED)
140{
141  if (strncasecmp (*strp, "seg:", 4) == 0)
142    {
143      *strp += 4;
144      return NULL;
145    }
146  return _("Missing 'seg:' prefix");
147}
148/* -- */
149
150/* -- dis.c */
151
152/* Print an operand with a "." prefix.
153   NOTE: This prints the operand in hex.
154   ??? This exists to maintain disassembler compatibility with previous
155   versions.  Ideally we'd print the "." in print_dot.  */
156
157static void
158print_with_dot_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
159		       void * dis_info,
160		       long value,
161		       unsigned attrs ATTRIBUTE_UNUSED,
162		       bfd_vma pc ATTRIBUTE_UNUSED,
163		       int length ATTRIBUTE_UNUSED)
164{
165  disassemble_info *info = (disassemble_info *) dis_info;
166
167  info->fprintf_func (info->stream, ".");
168  info->fprintf_func (info->stream, "0x%lx", value);
169}
170
171/* Print an operand with a "#pof:" prefix.
172   NOTE: This prints the operand as an address.
173   ??? This exists to maintain disassembler compatibility with previous
174   versions.  Ideally we'd print "#pof:" in print_pof.  */
175
176static void
177print_with_pof_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
178		       void * dis_info,
179		       bfd_vma value,
180		       unsigned attrs ATTRIBUTE_UNUSED,
181		       bfd_vma pc ATTRIBUTE_UNUSED,
182		       int length ATTRIBUTE_UNUSED)
183{
184  disassemble_info *info = (disassemble_info *) dis_info;
185
186  info->fprintf_func (info->stream, "#pof:");
187  info->fprintf_func (info->stream, "0x%lx", (long) value);
188}
189
190/* Print an operand with a "#pag:" prefix.
191   NOTE: This prints the operand in hex.
192   ??? This exists to maintain disassembler compatibility with previous
193   versions.  Ideally we'd print "#pag:" in print_pag.  */
194
195static void
196print_with_pag_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
197		       void * dis_info,
198		       long value,
199		       unsigned attrs ATTRIBUTE_UNUSED,
200		       bfd_vma pc ATTRIBUTE_UNUSED,
201		       int length ATTRIBUTE_UNUSED)
202{
203  disassemble_info *info = (disassemble_info *) dis_info;
204
205  info->fprintf_func (info->stream, "#pag:");
206  info->fprintf_func (info->stream, "0x%lx", value);
207}
208
209/* Print a 'pof:' prefix to an operand.  */
210
211static void
212print_pof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
213	   void * dis_info ATTRIBUTE_UNUSED,
214	   long value ATTRIBUTE_UNUSED,
215	   unsigned int attrs ATTRIBUTE_UNUSED,
216	   bfd_vma pc ATTRIBUTE_UNUSED,
217	   int length ATTRIBUTE_UNUSED)
218{
219}
220
221/* Print a 'pag:' prefix to an operand.  */
222
223static void
224print_pag (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
225	   void * dis_info ATTRIBUTE_UNUSED,
226	   long value ATTRIBUTE_UNUSED,
227	   unsigned int attrs ATTRIBUTE_UNUSED,
228	   bfd_vma pc ATTRIBUTE_UNUSED,
229	   int length ATTRIBUTE_UNUSED)
230{
231}
232
233/* Print a 'sof:' prefix to an operand.  */
234
235static void
236print_sof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
237	   void * dis_info,
238	   long value ATTRIBUTE_UNUSED,
239	   unsigned int attrs ATTRIBUTE_UNUSED,
240	   bfd_vma pc ATTRIBUTE_UNUSED,
241	   int length ATTRIBUTE_UNUSED)
242{
243  disassemble_info *info = (disassemble_info *) dis_info;
244
245  info->fprintf_func (info->stream, "sof:");
246}
247
248/* Print a 'seg:' prefix to an operand.  */
249
250static void
251print_seg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
252	   void * dis_info,
253	   long value ATTRIBUTE_UNUSED,
254	   unsigned int attrs ATTRIBUTE_UNUSED,
255	   bfd_vma pc ATTRIBUTE_UNUSED,
256	   int length ATTRIBUTE_UNUSED)
257{
258  disassemble_info *info = (disassemble_info *) dis_info;
259
260  info->fprintf_func (info->stream, "seg:");
261}
262
263/* Print a '#' prefix to an operand.  */
264
265static void
266print_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
267	    void * dis_info,
268	    long value ATTRIBUTE_UNUSED,
269	    unsigned int attrs ATTRIBUTE_UNUSED,
270	    bfd_vma pc ATTRIBUTE_UNUSED,
271	    int length ATTRIBUTE_UNUSED)
272{
273  disassemble_info *info = (disassemble_info *) dis_info;
274
275  info->fprintf_func (info->stream, "#");
276}
277
278/* Print a '.' prefix to an operand.  */
279
280static void
281print_dot (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
282	   void * dis_info ATTRIBUTE_UNUSED,
283	   long value ATTRIBUTE_UNUSED,
284	   unsigned int attrs ATTRIBUTE_UNUSED,
285	   bfd_vma pc ATTRIBUTE_UNUSED,
286	   int length ATTRIBUTE_UNUSED)
287{
288}
289
290/* -- */
291